Instrumental analysis chemistry Study guide

IR sources – consist of inert solid and heated electrically to very high temperatures 1 500-KICK to get a continuum of radiation. Unrest Glower- composed of rare earth oxides (Zero, YEA, and Error) current is passed thru the device so that the device can reach the high temp of 1200-KICK, spectral out in the IR region Global source- silicon carbide rod heated to 1300-KICK Disadvantage to using this is water cooling is required to prevent electrical arching.Incandescent wire sources- tightly wound spiral monochrome wire heated by electrical current to kick IR absorption requirement 1 source of continuous IR radiation 2 IR transducer that's sensitive Mercury Arc Source (Far ‘R) only for Far IR region only has enough radiant power In this region. Quartz Jacketed tube containing Hag vapor pressurized greater than 1 ATM, electricity passed thru this Hag vapor (pressure emits a continuum of radiation In the far IR region. ) Disadvantage and the advantage to this source Is that It only is seed for the Far IR region only and can't be used for any other IR region.Tungsten Filament lamp (Near IR region)- ordinary filament lamp, convenient source for the near IR of 4000-12800 corn-l , Inexpensive but restricted to Near IR region) CO laser source- laser produces a band of radiation in 900-1100 cam -1, can get 100 closely spaced discreet lines, can tune the laser to a specific line. (More expensive) Advantage- radiant power available In each line (gets several orders of magnitude increase) Thermal transducer-response depends on the heating effect of radiation, radiation is absorbed by a small black body and resultant temp rise is monitored, detects temperature changes that is produced.Heat capacity of the absorbing element must be as small as possible if detectable temp change is to be produced, radiant power of the spectrophotometer beam is IOWA-7 to IOWA-9 watts ( only observes a few thousandths of K change in temp) Has to be in a vacuum and shielded from ther mal radiation emitted by nearby objects Beam from the source is chopped at a specific frequency different from extraneous noise outside of it. Try to minimize size and thickness of the absorbing element to concentrate the entire beam of IR radiation on he surface of the absorbing element.Thermocouples- consist of a pair of Junctions for when 2 pieces of metal (Bismuth and Antimony are fused together BTW metals a potential develops is temp dependent at the Junction potential is temp dependent and varies with the change in temp. Junction is often blackened to improve absorbing capacity, also sealed in a vacuum chamber with a window that's transparent to the IR radiation. Can respond to temp difference, and enhance sensitivity by connecting several thermal couples together= thermopile.Ferroelectric transducers- insulators with special thermal and electric properties instructed from single crystalline wafers. Electric field is applied across material and electric popularization takes pl ace. When there is temp change by radiating it w/ IR radiation then the charge distribution is altered, can be detected as current , used on most Fast response times and track in the time domain) FITS Most commonly used region is mid- IR region (670-4000 CM A-I) can use near IR for low met hydrocarbons Far IR region- used inorganic structures and metal organic species.There is no good solvent that is transparent all the way throughout the IR region of possible interest. Water and alcohol are seldom used BC they strongly absorb and attack the alkali metal halides that make up the cell windows. Liar cells tend to be more narrow in width, than those used in I-JPL's Chromatography 2 primary components Mobile phase- transports signal through the column (can be a gas or a liquid or a supercritical liquid) Stationary Phase- immiscible solid that's fixed in place in a column or on a solid surface.The components in a mixture distribute themselves BTW the pm and the SP to have separation to o ccur the species have to separate themselves BTW mobile and stationary. Stronger species interact more with the SP and more slowly with the mobile phase. -differences in mobility cause the sample components to separate into distinct bands or zones Classification of chromo methods 1) Physical means- when the PM and SP are brought into contact with one another (column chromatography SP held in a tube, pm is pushed through w/ pressure. ) Planar Chromatography- SP supported on a flat plate or piece of paper. PM moves thru the SP by capillary action or gravity. Elution of Bands/ Zones on a Chromatography column One of the component B is moving slower than component A BC it is interacting with he SP. Limitations of linear response BTW analyze concentration and TTS 1) Need distinct stretch or bend 2) Linear response 3) Solvent transmittance is constant.Data collected with Chromatography with peaks that correspond to solute that contain 1) Retention time 2) Peak area Retention time – time it takes for the analyze peak to reach the detector (Try) (Tm)- corresponds to the time it takes for the pm to move to the detector. (kill a)- Retention factor used to describe the migration rated of solutes on columns Zone broadening and Column Efficiency- column is more efficient if you have less reddening of peaks Gaussian shape of an ideal chromatography zone; attributed to the random motion of the solute molecules in the chromatographic zones.The size of peaks increases as it moves down the column b/c more time allows spreading to occur. The size of the peak is directly related to the â€Å"residence time†; the time spent in the column and indirectly related to the velocity of the mobile phase. 2 methods of describing column efficiency 1) Plate height (h) 2) Plate count (N) Efficiency of chromatography columns increases with increased plate count and decreasing plate height.Variables affecting Zone broadening ) effect of pm flow rate in general the magnitude of eff ect on column efficiency depends on the length of time the pm is in contact with the SP (depends on flow rate of the pm) 2) Van Demeter plot – efficiency studies by determining the H as a function of PM velocity The smaller the plate height the better the column efficiency (represented on the graph the lowest point on the curve) 3) Linear flow effects zone broadening Theoretical Plate height and Column Variables A) Linear velocity of PM-distance per unit time traveled by the PM ( linear flow rate) B) Diffusion coefficient in PM – rate at which the molecules diffuse across a plane of nit area and the concentration gradient in the direction of diffusion in the PM C) Diffusion coefficient in SP -rate at which the molecules diffuse across a plane of unit area and the concentration gradient in the direction of diffusion in the SP D) of the solutes) E) Retention factor – time spent by the solute in the SP to the time spent in the pm.

Divorce Bill Essay

Underpinning this proposal is a commitment to the policy of the State to protect and strengthen marriage and the family as basic social institutions, to value the dignity of every human person, to guarantee full respect for human rights, and to ensure the fundamental equality before the law of women and men. In the Filipino culture, marriage is regarded as a sacred union, and the family founded on marriage is considered as a fount of love, protection and care. Philippine society generally frowns upon and discourages marital break-ups and so provides cultural and legal safeguards to perserve marital relations. Cultural prescriptions and religious norms keep many couples together despite the breakdown of the marriage. But the cultural prescriptions for women and men differ. Women are traditionally regarded as primarily responsible for making the marriage work and are expected to sacrifice everything to preserve the marriage and the solidarity of the family. While absolute fidelity is demanded of wives, men are granted sexual license to have affairs outside marriage. Yet when the marriage fails, the woman is blamed for its failure. Reality tells us that there are many failed, unhappy marriages across all Filipino classes. Many couples especially from the marginalized sectors, who have no access to the courts, simply end up separating without the benefit of legal processes. The sheer number of petitions that have been filed since 1988 for the declaration of the nullity of the marriage under Article 36 of the Family Code (commonly known as â€Å"annulment†) shows that there are just too many couples who are desperate to get out of failed marriages. Even when couples start out well in their marriage, political, economical and social realities take their toll on their relationship. Some are not prepared to handle the intricacies of the married life. For a large number of women, the inequalities and violence in marriage negate its ideals as the embodiment of love, care and safety and erode the bases upon which a marriage is founded. The marital relations facilitate the commission of violence and perpetuate their oppression. Official figures in 2009 showed that nineteen women were victims of marital violence everyday. Among the different forms of violence and abuse against women committed in 2009, wife battery ranked highest at 6,783 or 72% according to the Philippine National Police (PNP). The Department of Social Welfare and Development (DSWD) likewise recorded marital violence as highest among different forms of violence against owmen at 1,933. Previous reports of the PNP about three of ten perpetrators of violence against women were husbands of the victims. Husbands accounted for 28 percent of the violence against women crimes. Given these realities, couples must have the option to avail of remedies that will pave the way for the attainment of their full human development and self-fulfillment and the protection of their human rights. Existing laws are not enough to guarantee and protect these rights. To quote the Women’s Legal Bureau, Inc. , a legal resource NGO for women: â€Å"The present laws relating to separation of couples and termination of marriage are inadequate to respond to the myriad causes of failed marriages. Particularly, the remedies of declaration of nullity and annulment do not cover the problems that occur during the existence of marriage. Legal separation, on the other hand, while covering problems during marriage, does not put an end to marriage. † â€Å"Though both divorce and a declaration of nullity of a marriage allow the spouses to remarry, the two remedies differ in concept and basis. A declaration of nullity presupposes that the marriage is valid from the beginning and the court declares its non-existence†¦ Beyond [the] grounds specified [in the law], declaration of nullity is not possible. † â€Å"In annulment, the marriage of the parties is declared defective from the beginning, albeit it is considered valid until annulled. The defect can be used to nullify the marriage within a specified period but the same may be ignored and the marriage becomes perfectly valid after the lapse of that period, or the defect may be cured through some act. The defect relates to the time of the celebration of the marriage and has nothing to do with circumstances occurring after the marriage is celebrated. In annulment, the marriage is legally cancelled, and the man and woman are restored to their single status. † â€Å"Since August 3, 1988, couples have been given a way out of failed marriages through Article 36 of the Family Code†¦Ã‚  The remedy provides under Article 36 is declaration of nullity of the marriage. The article voids a marriage where one party is â€Å"psychologically incapacitated† to comply with the essentials of marital obligations. Consistent with the concept of void marriages (where the remedy is declaration of nullity), the law requires that the incapacity must have existed at the time of the celebration of the marriage†¦ In practice, Article 36 has become a form of divorce, as valid marriages are declared void every day in the guise of â€Å"psychological incapacity. The innumerable Article 36 cases brought to trial courts is an indication of the elasticity of Article 36 to accommodate the needs of many couples desiring to terminate their marriages. It is proof that divorce is needed in the Philippines. Article 36 provides a remedy only for spouses who can prove â€Å"psychological incapacity†. The concept certainly cannot accommodate all cases where divorce would be necessary. What we need is a divorce law that defines clearly and unequivocally the gr ounds and terms for terminating a marriage. That law will put an end to the creative efforts played daily in courtrooms across the country to accommodate a wide range of cases in order to prove â€Å"psychological incapacity. † (Women’s Legal Bureau, Inc. , The Relevance of Divorce in the Philippines, 1998) Thus, the bill seeks to introduce divorce as another option for couples in failed and irreparable marriages. The bill was crafted in consultation with women lawyers and inspired by the studies and inputs of various women’s groups and the experiences of spouses gathered by GABRIELA from its various chapters nationwide. The bill seeks to introduce divorce in Philippine law with a strong sense of confidence that it will be used responsibly by Filipino couples. This confidence stems from the experiences of Filipino families that show that separation is usually the last resort of many Filipino couples whose marriage has failed. Cases of battered women also support this. Battered women invariably seek separation only after many years of tring to make the marriage work. Separation only becomes imperative for them when they realize that it is necessary for their and their children’s survival. Divorce could actually provide protection to battered women and their children from further violence and abuse. With the predominance of the Catholic faith in the Philippines, the fear that divorce will erode personal values on marriage appears unfounded. The experience of Italy, where the Vatican is located, and Spain, two predominantly Catholic countries which practice divorce, supports this. Those countries have a low rate of divorce. Italy registers a 7% rate while Spain registers 15%. The figures reflect the strong influence of religious beliefs and culture on individuals in deciding to terminate marital relations. Historically, divorce had been part of our legal system. In the beginning of the 16th century, before the Spanish colonial rule, absolute divorce was widely practiced among ancestral tribes such as the Tagbanwas of Palawan, the Gadangs of Nueva Vizcaya, the Sagadans and Igorots of the Cordilleras, and the Manobos, B’laans and Moslems of the Visayas and Mindanao islands. Divorce was also available during the American period, starting from 1917 (under Act No. 710 enacted by the Philippine Legislature), and during the Japanese occupation (under Executive Order No. 141) and after, until 1950. It was only on August 30, 1950, when the New Civil Code took effect, that divorce was disallowed under Philippine law. Only legal separation was available. The same rule was adopted by the Family Code of 1988, which replaced the provisions of the New Civil Code on marriage and the family, although the Family Code introduced the concept of â€Å"psychological incapacity† as a basis for declaring the marriage void. In recognition of the history of divorce in the Philippines, the farmers of the 1987 Philippine Constitution left the wisdom of legalizing divorce to the Congress. Thus, the 1987 Constitution does not prohibit the legalization of divorce. This bill is respectful of and sensitive to differing religious beliefs in the Philippines. It recognizes that the plurality of religious beliefs and cultural sensibilities in the Philippines demand that different remedies for failed marriages should be made available. For this reason, the bill retains the existing remedies of legal separation, declaring of nullity of the marriage and annulment and only adds divorce as one more remedy. Couples may choose from these remedies depending on their situation, religious beliefs, cultural sensibilities, needs and emotional state. While divorce under this proposed measure severs the bonds of marriage, divorce as a remedy need not be fo the purpose of re-marriage; it may be resorted to by individuals to achieve peace of mind and facilitate their pursuit of full human development. This bill also seeks to make Philippine law consistent in the way it treats religious beliefs with respect to termination of marriage. Philippine law through the Code of Muslim Personal Laws of the Philippines (Presidential Decree No. 1083 [1977]) allows divorce among Filipino Muslims, in deference to the Islamic faith which recognizes divorce. Non-Muslim Filipinos should have the same option under Philippine law, in accordance with their religious beliefs. The bill proposes five grounds for divorce. All the five grounds are premised on the irreparable breakdown of the marriage and the total non-performance of marital obligations. Thus, the bill provides that a petition for divorce may be filed when the petitioner has been separated de facto (in fact) from his or her spouse for at least five years at the time of the filing of the petition and reconciliation is highly improbable, or when the petitioner has been legally separated from his or her spouse for at least two years at the time of the filing of the petition and reconciliation is highly improbable. Not all circumstances and situations that cause the total breakdown of a marriage could be defined in this proposed measure. Thus, the bill also provides that divorce may be granted when the spouses suffer from irreconcilable differences that have caused the irreparable breakdown of the marriage. Spouses living in a state of irreparable marital conflict or discord should be given the opportunity to present their marital contrarieties in court and have those differences adjudged as constituting a substantial ground to put an end to the marriage. Another ground for divorce included in the bill is when one or both spouses are psychologically incapacitated to comply with the essential marital obligations. This provision will consequently repeal Article 36 of the Family Code. The bill seeks to include â€Å"psychological incapacity† in the grounds for divorce in the belief that the concept is consistent with the termination of marital ties rather than with a void marriage. This bill seeks to eliminate â€Å"condonation of the act† and â€Å"consent to the act† as grounds for denying a petition for legal separation and, by extension, a petition for divorce. Many spouses especially women ignore the offense because of the social and economic conditions they are in. Many women in the marginalized sectors tend to condone the offense because they are economically dependent on their spouses or because of the stigma attached to failed marriages. Some women who are perceived to be condoning the acts of their husbands actually suffer from the cycle of spousal abuse such that they have become so disempowered to address their situation.

Case study Fetal abnormality Essay Example | Topics and Well Written Essays - 500 words

Case study Fetal abnormality - Essay Example One theory according to Marco is that the doctor should consider the emotional stability of Jessica and he should tell her once he is sure that she can receive the diagnosis. Dr. Wilson’s theory is that it is an obligation for the doctor to inform his patient their true diagnosis immediately to facilitate proper decision making. Therefore, it was appropriate for him to inform Jessica on the condition of the fetus and give his advice of which he recommended an abortion. He argues that his obligation is to Jessica and not to Marco and that it is important that Jessica knows her condition so that he can advice her accordingly. Maria on the other hand thinks that a mother should not terminate a pregnancy despite the condition of the fetus. She pleads with Jessica not to terminate the pregnancy and let God decide. Jessica does not have a particular stand, she cannot decide between terminating the pregnancy, and her religious believe that life is sacred. All these theories are at some point confusing Jessica in her decision regarding what to do. Marco is Jessica’s husband and although after the pleading with the doctor he did not change his mind, the doctor thought he was worth listening. This is despite the fact that his reasoning did nothing to persuade the doctor to act differently and wait before telling Jessica the truth about her diagnosis. The doctor’s theory has a lot of weight in the decision-making since he is the expert and knows the implication of continuing with the fetus with abnormalities. Marias thinking also can influence on what Jessica decides considering Jessica is also a religious person and that is why she thought of calling her priest. Personally, I am more at ease with the doctor’s theory that it is better that Jessica Knows the condition from the doctor because it is ethically right she knows. The doctors knows the challenges that children born with conditions like what Jessica

Psychological Journal Reading and Questions Answering Essay

Psychological Journal Reading and Questions Answering - Essay Example The psychological experience is that focus of attention is essential for perception of gaze direction in a centralized attention pattern. The behavioral facts found in the study are those related to the compelling social elements that lie deep in the act of gazing. Gaze-recording techniques can be used for the analysis of behaviour traits of people engaging in a group activity. This is easily noticed as the gaze cues can happen in a millionth factor of any other facial expression. The study of gaze structure of people leads the head way in many of psychological studies which help a person find out what others guess from the very glance of their gaze. The authors have adopted experimental patterns to demonstrate their finding from the studies they made on the topic of gaze-behaviour trait relationship. They used super computers in place to support the operative study with a group of experimental participants and designated targets. Their experiments in the basic patterns found that directional information from head and eyes were combined for head always followed the direction set by the eyes. Target was seen simultaneously induced by factors of distracter stigmatization. The objects thus used in the experiments had a substantial tendency to appear directly above or below the target and could be congruent or incongruent with the target image. Objects used as 24 of such target stimuli resulted in as many as 192 displays. The congruency level in both cases did not exhibit much difference as the direction of visual imaging was concerned. Another experiment leads the way of vision theory with engagement of full face images with horizo ntally averted eye gaze suggesting predictions for directional information form unattended profile heads alongside hand targets. Some findings are that profile head distracters interfered relatively with hand targets. This idea supports the earlier findings of directional information from head cues being

Chapter 10-12 questions Assignment Example | Topics and Well Written Essays - 500 words

Chapter 10-12 questions - Assignment Example The first lesson that can be learned about Jackson regarding his sweeping victory is that he was a very tactical person, since he used his wit and tactics to convince the electorates despite being the underdog in the race. However, the lesson that can be learned from his subsequent handling of the Peggy Eaton affair is that Jackson was an empathetic, supportive and a champion of human rights. This is because he was the only person who welcomes and became the fervent champion of Eaton, after all, the cabinet wives refused to associate with her after her moral character came into question. Jacksons stand handling of Eatons affairs also demonstrated that he was an autonomous leader who could not easily be swayed by the opinion of others as he stood his ground and supported Eaton under difficult circumstances (Brands, 2012). Jackson basically killed the national bank in 1932 by exercising his veto against the bank. For instance, he refused to allow federal funds to be deposited in the bank and subsequently rejected attempts to re-charter the bank, effectively resulting in the collapse of the bank (Brands, 2012). The slave communities maintained their kinship ties by naming themselves and their siblings as a way of maintaining a sense of continuity and affiliation. At the same time, the slave communities ensured that their kinship ties are maintained by adapting the slaves that found themselves on the farms into the new network (Brands, 2012). The southern whites adopted a number of strategies for fighting the antislavery efforts. The first strategy that the southern whites used was to perform lynching. This was seen during the Civil War in which the southern whites who were strongly opposed to the abolition of slavery resorted to lynching blacks in which some were hung to death. The Ku Klux Klan who was part of a movement opposed to antislavery also used

Employee Motivational Strategies Essay Example | Topics and Well Written Essays - 1750 words

Employee Motivational Strategies - Essay Example Add that to the fact that sometimes, employees think that the compensation that they receive on a monthly basis (or maybe even more frequently, depending on the agreement between the employee and the employer) is just enough or maybe even not enough for their daily needs. Most companies have perceived this problem, realizing that manpower or more specifically the employees themselves are their most important resource. Employers also have realized that like any other resource, manpower should be continually replenished or renewed in terms of loyalty, trust and overall satisfaction from the work they are currently employed in. The concept of employee motivation comes into mind, wherein the company adapts certain policies that will motivate their employees so that they will remain not only financially satisfied but also emotionally, physically and mentally contented. The introduction of fun in the workplace is a welcome idea, and many companies are jumping on this idea for the improveme nt of their employees. Employee motivation techniques are now most often done in many forms in modern workplaces and usually revolve around the concept of rewarding satisfactory effort with the appropriate reward or set of rewards that are given either immediately or at a designated time depending on certain situations. Employee motivation is a new keyword today that states that employees have the need to be motivated and satisfied in order to maintain their level of work and positive attitudes towards the company. This topic is very significant and very much applicable in today's high-stress work environment, as it sees that employees as a very important resource that needs to be nurtured and developed. The relationship between the employer and their employees are also discussed as well as their parts in the creation of solutions pertaining to employee motivation and satisfaction. There are several theories and methods of employee motivation discussed herein, as well as recommendations on how to implement employee motivation methods and improvement of the said system if it is already implemented in the workplace. Employer and employee relationships A very fine line exists between the employer(s) and the employee. One thing for certain is that the employer is the employee's superior and the employee must comply with the work that his or her employer demands. With this, it can be thought of that the employee is bound to the service of his or her employer within the contract that they have agreed between themselves. This is not unlike the relationship between master and slave of yesteryears, in which the slave is not just bound to its master's service but also treated as that person's property. Times have changed and so do employee rights. Treating employees like slaves would not do an employer any good, and this has been shown with the creation of employee rights and privileges laid down upon each country's constitution. One of the basic tenets of this is the provision of salaries to the employee by their employer according to the existing minimum wage rates. Other benefits such as health benefits, bonuses and other financial an d non-financial perks may or may not be given again depending on the agreement set upon between the emplo

Hofstedes Cultural Dimensions model in relation to Jordanian culture Essay

Hofstedes Cultural Dimensions model in relation to Jordanian culture - Essay Example The Hashemite Kingdom of Jordan, is one such nation in the Arab world which is currently promoting itself as an attractive venue for Foreign Direct Investments, especially in the Information & Communication Technology (ITC) industry and the tourism industry (Al-Jaghoub & Westrup 2003). Lead by the charismatic leader, King Abdullah, the country is poised today to capitalize from the growing world market for software and information technology products, which can be catered through the abundance of high caliber human capital endowment the country is in possessing with. The aim is to attract companies from America and Europe in to investing in the country’s ITC sector and act as a hub for ITC activities in the region to cater the needs of not only the US and European customers but also the rest of the Arab world (REACH 2000). However, the success of these cross-cultural FDI ventures and other forms of business dealings depend heavily upon how well the host country and the investi ng country manage to integrate their operations and manage their human resource in to high performance. Therefore such business ventures require a high level of awareness and sensitivity to the diverse national cultures, which bears upon the manner in which business dealings are conducted. Success of cross-cultural business dealings will depend upon a deep understanding of the national cultures and a mutual respect, which should form the backbone of all forms of business strategies including the HRM strategies (Hill 2003).

Campaign Finance Reform Essay Example | Topics and Well Written Essays - 250 words

Campaign Finance Reform - Essay Example Most of these campaigns use the money to fund the campaign secretariat, advertisements, produce banners and paraphernalia with the candidates’ name, rent premises, motor vehicles and other apparatus required for campaigning, as well as fund those who present themselves to some of the campaign avenues (Milyo, 2008). Three main reforms suggested include voting with dollars, clean elections, and matching funds. Of these proposals, the clean elections proposals will be the best to implement. This is because though people have termed politics as a dirty game, it is very important that the elections become leveled to allow everyone with the will to participate. This means that the candidates will be willing to use what they have to make good use of their benefits and expenditures to represent the people who elect them. The chances of having corrupt officials will be minimized (Milyo, 2008). The citizens’ united decision allowed the people to limit the government’s interference with the non-corporation expenditures in political campaigns. This is not a good precedence because the political parties could become avenues of corruption and manipulation by the non-governmental companies that make huge donations to support candidates. That limits the transparency of campaigns (Milyo,

American Historical Association Essay Example | Topics and Well Written Essays - 250 words

American Historical Association - Essay Example The diversity of people makes them want to study history, as it would help them understand certain predicaments. History is mainly important to those individuals who want to find out the meaning of being humans. People who dwell on the history of the origin of human become more self-aware as, through it, individuals learn about the actions of individuals in the past. It is through the study of colonization that a person is able to understand completely what the European nations were doing in Africa (Velasquez, 2014). Events such as the Holocaust or Hiroshima bombing teaches a historian about the dangerous side of humans. It is vital for an individual who wants to develop the art of critical thinking to study history. This is cultivated by the detailed information and explanations provided in history. Individuals who found themselves in foreign places ought to study history to help them answers any questions that they may have. Some of the questions that they may have are the difference in color or accent (Velasquez, 2014). People in countries with different cultures would turn to history to help them understand the difference in the two cultural practices.

Practical on Enthalpy Changes Between Acids and Bases Essay Example for Free

Practical on Enthalpy Changes Between Acids and Bases Essay Introduction All life on earth depends on the transfers of energy in chemical reactions. So that measurements can be made when energy is transferred during chemical reactions, that have to be carried out under controlled conditions. A special name is given to process where energy is transferred and exchanged with the surroundings, when taking place under constants pressure. The special name given to this type of process is Enthalpy. When chemical reactions take place they release energy to the surroundings. There are also special names given to these kind of energy transfers. They are called exothermic and endothermic reactions. Out of these two types exothermic reactions are most easily detected. This is because in exothermic reactions energy is realised to the surroundings and is detected by temperature rise. But some chemical reactions only occur when energy is put into them from an external source. Reactions which require this sort of input are called endothermic reactions. Enthalpy is the total energy content of the reacting materials. The symbol for enthalpy is ?H. Enthalpy is measured during a reaction. Energy is transferred to and from a reaction system and as a result the enthalpy changes. The equation used to calculate the enthalpy is as follows. ? H = mc ?T (H is the enthalpy change, M is the mass of the reacting solution and C is the specific heat capacity for water.) Acids are known as proton donors. Acids have a pH below 7 which varies from one acids to another. What I mean by this is that a strong acid readily gives away protons and is fully ionised in water. A weak acid is reluctant to give up its protons and is slightely ionised by water. Bases are on the other hand the total chemical opposites of acids they are proto acceptors. carry out was to an practical where an acid is basically reacted with a base and the heat produced by the reaction recorded. Health and Saftey During this practical a white lab coat should be worn and safety glasses du the use of acids could be dangerous. Method Refer to sheet given by lecturer Results Strengths Solutions pH of solutions A2 1M Hydrochloric acid 0.68 A1 1M Sulphuric acid 0.32 A3 1M Ethanoic acid 2.42 B1 1M Sodium hydroxide 13.38 B3 1M Sodium hydrogen carbonate 8.42 B2 1M Ammonia 11.39 Key A1 = Strongest acid A3 = Weakest acid B1 = Strongest base B3 = weakest base Acid Base T1 (Temp ?C) T2 (Temp ?C) Temp change (?C) ? H = mc ?T HCl with NaOH 23 30 7 -1170.4 2NaHCO3 23 28 5 -836 NH3 23 29 6 -1003.2 H2SO4 NaOH 22 27 5 -836 2NaHCO3 22 23 1 -167.2 NH3 22 25 3 -501.6 CH3CH2OH NaOH 21 27 6 -1003.2 2NaHCO3 21 20 + 1 167.2 NH3 21 25 4 -668.8 Conclusion After successfully completing my experiment I have concluded a number of things. From my results I have results concluded that there is a relationship in our results to a certain degree. For example the enthalpy for each acid is as follows. The most strongest acid sulphuric acid, which had the lowest pH showed that when mixed with the base sodium hydroxide it gave the highest enthalpy value then the second strongest acid compared to the same base and then the third acids which was the weakest. This showed me that as the acid got weaker the enthalpy values also decreased. The way in which I kept my experiment a fair test was that I made sure that I used the same equipment for example to use the same thermometer each time I made a temperature recording at the start of a reaction and at the end and made sure that each time the thermometer came back to its original temperature. Also I made sure that we used the same digital pH meter and that it was washed everytime after use to remove all impurities so contamination would not occur. Another important aspect was to make sure that the experiment was carried out in the same conditions because if for example the temperature changed this could have affected our practical and results. If I was to conduct this experiment again I would make a number of changes. Firstley one point in the practical which I thought caused chance of error was when reading the meniscus line on the cylinder it was very hard to get this exactly right. A better and more accurate way would have been if we used an pipette it would have made it more accurate. I think another aspect which could cause error was the thermometer which could have used a digital one. And also finally there could have been another area in which error could have been caused is the pH meter this if not cleaned properly could infected my other solutions.

Excessive Oral Parafuctional Movement Habit Reversal

Excessive Oral Parafuctional Movement Habit Reversal Yeseul KIM Self-Reporting of Excessive Oral Parafuctional Movement with  Proposal of Future Intervention Oral parafunctional activities refer to excessive uses of mouth, tongue and jaw, including continuous chewing, biting objects, leaning on the hand, teeth grinding and jaw clenching (Winocur, Litter, Adams Gavish, 2006). Their prevalence and association with signs and physiological and psychological symptoms of dysfunction have been reported, such as facial muscle pain, headache, and feeling stress (Lobbezoo, Van Der Glas, Van Der Bilt, Buchner Bosman, 1996; Rodrà ­guez, Miralles, Gutià ©rrez, Santander, Fuentes, Fresno Valenzuela, 2011; Winocur et al., 2006). Previous research has been demonstrated the maintenance of oral parafunctional habits are resulted from temporomandibular disorders (TMD), occurred by several reasons like joint disturbances (noises, catching, and joint tension), muscular discomfort, possibly eating disorder and obsessive-compulsive disorder, and trauma (Gramling, Neblett, Grayson Townsend, 1996; Winocur et al., 2006). However, some researchers have pointed out these factors are poorly proven as the numerous number of people has the TMD problem even though they do not have other oral habits (Cairns, 2010; Fotek, 2014). Although not many studies has been done to find out the reasons of maintaining those habits in terms of operant conditioning (e.g. rewards or punishment), but it is assumed to happen due to stressful lifestyle, frustration, or personality traits such as being aggressive or competitive while a subject is awake (Glaros Burton, 2003; Lobbezoo, Van Der Zaag Naeije, 2006). Researchers focused on treatments targeting parafunctional habits to decrease TMD pain which indicates their significant relationship with TMD (Glaros, Owais Lausten, 2007). In other words, there is possibility of reducing the psychological stress which is the positive outcomes of maintaining oral habits, however, they are more likely to produce negative outcomes such as higher pain and symptoms of TMD by clenching and grinding teeth (Glaros et al., 2007; Peterson, Dixon, Talcott Kelleher, 1993). Treatment for oral habits revolves around repairing the damage to teeth and jaw, thus dental treatment such as occlusal splint or mandibular advancement device could be in use. In addition to this, given the strong association between diurnal oral parafunctional activities like bruxism and psychological factors, habit reversal treatment has been suggested to increase a patient’s awareness of unwanted behaviours, develop an alternative to the habits, for example, relaxation of the masticatory muscles and succeed in reducing TMD pain (Glaros et al., 2007). Research results suggests that group of patients using either habit reversal techniques or splints both experienced a great deal of relief from pain. In fact, habit reversal treatment is the one of the effective techniques in treating several motor disorder (Azrin Nunn, 1973; Peterson et al, 1993). According to Glaros, Hanson and Ryen (2014), 6-week-period habit reversal treatment was administered to reduce tooth contact and muscle tension in terms of headache by DTMT, dropping their jaws slightly (D), separating their teeth slightly (T), relaxing the muscles in the jaw and face area (M), and performing a deep breathing activity (D). Thirty-seven participants with TMD were selected between ages of 18 to 65 and completed the questionnaire to diagnose headache and TMD in the first phase. For the next phase, only 23 participants those who had headache from the phase 1 enrolled the treatment. They were given information about headache, facial pain, the role of oral behaviours in headache, and effect of tooth contact during the treatment session, then practiced DTMD treatment every two hours with a pager signal, and whenever they detected the tooth contact or facial muscle tensions. Although results from application of treatment in the phase 2 interpreted participants reported less pain and disability but the headache symptom did not change for 6 week trials. However, they showed a significant reduction of intensity of parafuctional habits after the treatment, but the period should be longer to reveal more powerful effects as they did not find a strong relationship between oral habits and headache. Habit reversal treatment was delivered to eliminate the motor behaviours, and negative though reversal method was given as the instructions to remove stress factors (Gramling et al., 1996). 17 qualified participants were recruited through the local newspaper advertisement, who reported TMD, with a symptoms such as mandibular joint sound, locked jaw and tenderness in the jaw. However, only the data collected from nine patients were analysed as they attended at least five sessions to be completers the whole therapy process. Before the treatment, treatment expectations and satisfaction from participants were measured to find out the relationship with outcomes such as decrease in frequency or intensity of oral behaviours. To get those descriptive information, participants filled out the facial pain diary four times in a day. Also, they answered to the questionnaires about the eleven different oral behaviours with ten-point scale, from â€Å"never† performed to â€Å"almost always†, and about the psychological distress with State-Trait Anxiety Inventory (STAI). Treatment conducted over a 24-week period, and three treatment groups of 5 to 6 people met weekly for seven consecutive weeks in 90-minute sessions. During the sessions, participants kept record an oral habit self-monitoring form to increase awareness of their own oral habits, thereby making habit reversal possible. They also continued and recorded practices for deep breathing and facial exercises practice throughout the whole sessions, which interrupt and reverse their oral behaviours. As the result of this study, Gramling et al. (1996) pointed out that habit reversal treatment strategy may be an effective intervention for many persons suffering from facial pain as participants shown significant decrease of rating pain by the end of treatment, which is consistent with diary data, however, the frequency and intensity of oral habit did not illustrate notable decrease. Peterson et al. (1993) investigated only 3 patients with variety of ages and gender traits who carried habit reversal treatment for 6 week, 1 hour sessions per week. This case study showed different results by individuals, but generally concluded the habit reversal could help reducing pain and increasing maximum opening for some TMD patients, and possibly more helpful for muscle-related problem than joint-related problem. Also, those who have been remaining oral habits for long time, it is more difficult to change such behaviours. The aim of current research project, self-reporting from one subject, is to understand the oral behaviours and reduce the frequency and possibility of TMD. By analysing the potential cause and background history of behaviours, subject could understand the significance of reducing parafunctions in terms of physical and mental health. Method Participant Y is a 25 year old female international student at University of Queensland, currently working in a travel agency who recently found out her excessive oral parafunctional activities with 14-month duration and feel anxiety of temporomandibular disorders. Operational Definition Oral parafunctional activities referred to making excessive movement of mouth and jaw including clenching jaw or grinding teeth while awake, and possibly combined with biting lips and presence of joint sounds. These behaviours were scored when (a) repeatedly occurred in a daytime, (b) whether subject is alone or not, (c) presented one or multiple behaviours at the same time. For example, grinding teeth while sleeping and making a single movement in lower jaw were not scored, while clenching teeth for 5 seconds and biting lips after jaw clicking are scored. In addition to this, simply opening mouth while talking and eating, or touching the temporomandibular joint could not be scored. Behavioural Recording Technique Self-monitoring method was chosen for this research, because subject was able to collect data when she was alone, or with other people. Also, such behaviours are often not easily to be observed by someone else. For the records, whenever subject noticed the oral parafunctional activities, she made notes on mobile device or paper with specific description of occasion, for the 14 consecutive days. However, accuracy of recording could be contaminated as it is very likely make errors while counting if behaviours occurred unconsciously. Also, Peterson et al. (1993) noted self-monitoring could affects the frequency of habits, by reducing teeth clenching and grinding. Results The general pattern from results of current project are shown in the Figure 1. Over the 14 days of monitoring period, the mean of frequency of oral habits occurred in a day is 12.29. The highest number reported during the period is 45, which is from the Day 13 while the lowest point is from Day 8. The possible reasons for these consequences have a strong relationship with the performance generated anxiety related to subject’s academic works on the reported dates. The Day 13 was the due date for the assignment graded higher percentage, it is assumed that the participant had a great level of anxiety. Also, she was awake for long time to complete the assignment, therefore, an excessive repetition appeared because a number of oral parafunctional activities was counted while subject awake. However, on the 8th day, none of oral habits was presented as the participant enjoyed the relaxation from the assignment and took a resting at home with the presence of intimate person. The reduction of anxiety was likely to stabilise her mental status, in contrast to other days of monitoring. According to the similarity in frequency between Day 6 to Day 11, subject maintained everyday routines such as going to university and working. The circumstances that she presented those habits were generally on the bus for commuting and doing task without interaction to others. It could possibly mean the absence of attachment to relatives made her isolated and generated slightly stressful situation. On the other hands, when the participants concentrated on non-stressed activity such as mobile game, she did not show many parafunctional habits. This participant who has an oral habits with excessive movement of teeth and jaw, illustrated that those behaviours has been stimulated by different reasons. Awareness of her asymmetric jaw became the trigger of habits when she was young. In addition to this, Changes in her circumstances in work place or university and being alone are significant factors as they generate stress, and currently the level of anxiety of failing academic achievement accelerated the frequency of behaviours. Consequences of behaviours can be short term and long term, such as immediate feeling fear or pain, reduction of stress, and significant health disorder related to temporomandibular joint and tooth. These consequences are reinforcers or punishers which increase or decrease the behaviours. Discussion Current research project were developed to understand the oral behaviours and reduce them which could cause unwanted consequences. The general findings from this study are when the participant has a higher degree of negative emotional states such as anxiety of academic achievement, receiving work related complaints, or being alone feeling lonesome. These results of current research partially supported the previous research in terms of the relationship between oral parafunctional behaviours and stressful routines (Glaros Burton, 2003; Lobbezoo, Van Der Zaag Naeije, 2006). In fact, SORCK analysis found out significant positive reinforcers of behaviours in this study are related to structures of jaw. In other words, the misbelief that moving mandibular joint can balance the asymmetric jaw leads the repetition of behaviour in pursuit of better physical appearance. Subject has mentioned the prominent jaw was her physical complex once, and when she heard the joint making sound after movement, she started the excessive movement habits. As discussed previously, habit reversal treatment has been proved as the effective method of reducing the parafuntional activities by many reserchers (Glaros et al., 2007; Gramling et al., 1996; Peterson et al., 1993). However, it is actually difficult to change the shape of jaw with the behavioural therapy that administered by previous researchers. To change her excessive behavioural patterns, the most important aspect of treatment should consider the belief of positive reinforcers. Therefore, habit reversal treatment can be adapted in slightly different way for future intervention. Among the habit reversal treatment, participant need to complete the State-Trait Anxiety Inventory (STAI) to find out the psychological distress which is the main factor of oral habits. About the obsession of physical attractiveness, Self-Esteem Scale (SES) required to be answered to indicate participant’s feeling towards self-descriptive statements, as well as the scale of pain around mandibular area. During the 2 week treatment period, participant will carry out the practice of 60-minutes DTMD treatment, dropping their jaws slightly (D), separating their teeth slightly (T), relaxing the muscles in the jaw and face area (M), and performing a deep breathing activity (D), while watching the mirror image of self. After the practice, participant gives verbal compliment to self, with written demonstration of how she proud of herself. The purpose of this intervention is to dismiss the misbelief of jaw movement, and develop new positive reinforcers with new oral habits. Earning self-esteem with attendance of treatment sessions will be a great positive reinforcer to the habit reversal activities (DTMD) which take the place of the oral parafunctional habits. Participant will record the frequencies of oral parafunctional habits every day during the treatment, and rate the pain from 0 to 10, and self-esteem scale after the whole process was completed. It is expected to participant would decrease the frequency of oral habits and show correlation with more points for self-esteem and less level of anxiety if this intervention is successful. Compliment to self will be the negative reinforcer in relation to the oral parafuntional habits, which will be declined, thus the rating of pain is assumed to be dropped in the later stage. However, it is uncertain the behavioural therapy related to self-esteem has the actual impact on its development. Also, one of the drawbacks for this intervention is designed for one person, thus it can be more effective if another patient engage during the treatment sessions, and give compliment to one another. Similarly, the results from the current self-monitoring has a limited aspect in terms of duration. Participant could suffer some health issues such as flu and extending the duration of monitoring will help to observe more reliable data. Also, the method of self-reporting has the definite limitation that reporting could be underestimated when participant delivers the behaviour unconsciously, and when the subject is too aware of monitoring â€Å"self† before she commits the behaviours, like Day 8 shown in current research results. These limitation needs to be covered to get more reliable data and better performance of further treatment.

The Controversy of Deforestation Essay -- Environment Nature Papers

The Controversy of Deforestation Environmental issues affect every life on this planet from the smallest parasite to the human race. There are many resources that humans and animal needs to survive; some of the most obvious resources come from the forests. Forests make up a large percentage of the globe. The forests have global implications not just on life but on the quality of it. Trees improve the quality of the air that species breath, determine rainfall and replenish the atmosphere. The wood from the forests are used everyday form many useful resources. Moreover, thinning the forests increases the amount of available light, nutrients and water for the remaining trees. Deforestation (forest thinning) is one of the most critical issues of environmental problems that are occurring today. Deforestation is a widely used term, but one with different meanings. Disturbance deforestation refers to all man made disturbances that alter a forest, these are the most common. This argumentative essay discusses the positive and negative aspects of deforestation. In the first part of the essay the pro arguments of deforestation will be discussed. For example, the issue of Global population and how forests are being used, land use and the ways forests contribute, wood use, forest growth, destruction and the reasons for cutting down the trees. The second half of the essay will cover the issues that are harmful to the environment because of deforestation. Many environmental issues take place everyday; a big question that arises, is if the global economy will ever finds middle on the issue of forest thinning. If deforestation was used only in the most crucial of times, the world might become a better place. Some of the most po... ...o enforce programs that used recycling, the need for disposable products would be diminished. When I started this argument project my feeling were leaning more toward the side of non deforestation. But after doing lots of research on the topic of deforestation and forest thinning, I have found that my opinion has changed. I still don’t feel strongly about trees being cut down. But there is logical reasoning behind almost every issue. Weather it is cutting down damaged trees or trimming them because of fire danger, the reasons will help the human economy in the end. But I think that the government should be more aware of the areas that they are clearing. So that tribes are not lost, and communities are not affected. I also think that they should only cut down the amount of lumber that is desperately needed. Therefore, eliminating how many forests are destroyed.

red scare :: essays research papers fc

The documents presented here are designed to be used in classes about Pacific Northwest history or US history. Although the documents deal specifically with events in Washington state, they are still potentially useful for a course about US history as a whole. As historian Richard Fried has observed, "'McCarthyism' is so often characterized in abstract terms that its meaning remains fuzzy. To sense the emotional bite of the Communist issue and to understand both how it affected life for those who ran afoul of it and how it shaped the nation's political culture, it is useful to look at specific cases." These documents allow students to explore such specific cases. Section II is a rather lengthy essay which tries to place the Cold War and Red Scare into historical perspective. It also analyzes the effect of the Cold War on Washington's economy and describes the major events of the Red Scare in Washington state. Much of this information is presented very briefly in a timeline in Section III. Teachers may wish to distribute photocopies of Section III to orient students to the main events of Cold War and Red Scare and to allow the students to place the documents in a chronological framework. Teachers may also with to distribute copies of the glossary in Section IV to familiarize students with Cold War terminology. The bibliography in Section V suggests books and videocassettes about the Cold War and Red Scare that teachers may find useful. The documents in Section VII can be used in a vast number of ways. Section VI offers suggestions for in-class and homework assignments based on the documents. The concordance in Section VII not only lists the source of each document, but also offers some possible discussion questions about many of the documents. II. The Cold War and Red Scare in Washington: Historical Context The Cold War created many aspects of modern Washington. Military spending sustained Washington's rapid economic growth after WW II. Although federal hydropower projects and WW II had initially industrialized Washington state, the struggle against the Soviets ensured that federal money continued to pour into the state. The Cold War left a physical legacy across the state that can still be seen today. Military bases were created and expanded. The production of plutonium at Hanford created radioactive waste that will exist for thousands of years. Even Seattle's most famous icon—the Space Needle—is a concrete monument to one aspect of the Cold War, the space race.

Thomas Fudge on his Vanilla Jefferson :: essays research papers fc

Thomas Jefferson by Norman Risjord is a biography of the third president of the United States that takes Thomas Jefferson from his youth through his later years in the early 19th century. The purpose of this book is to give a political and social overview of the Thomas Jefferson's life and career. It was written for both the student of American history and the casual reader interested in the genesis of the United States government, seen through the eyes of one of its founding fathers. The value of this book is that it shows that Jefferson was not a saint, yet he was one of the most intelligent presidents that the country has ever had. Risjord has given the book great value because he has framed Jefferson among his peers. Consequently, the book truly comes to life, and the reader is able to learn about Jefferson as well as his contemporaries James Madison, John Marshall, and John Adams. The scope of the book is all-inclusive. Risjord begins with Jefferson's birth on April 13, 1743 on his father's plantation, Shadwell, in Goochland County on the western edge. The narrative continues on to show Jefferson graduating from William and Mary College, then entering politics in Virginians House of Burgesses in 1769. Jefferson married Martha Skelton on New Year's Day, 1772. With the Virginia legislature from 1776 to 1779, Jefferson formed the groundwork for abolition of entail and primogeniture, for the establishment of religious freedom, and not for the public school system. Jefferson was of course the author of the Declaration of Independence, and because he had set this document in motion, he waited out the Revolutionary War to see if the colonies would win. If they had lost, Jefferson would have been hanged for treason against the King of England. He served as the minister to France from 1785 to 1789. At this time there was growing opposition to Alexander Hamilton and his policies, and Jefferson associated himself with a group called the Republicans, who were actually forerunners to the present Democratic Party. While Jefferson was serving as vice President from 1797 to 1801, he drafted the Kentucky Resolutions. He was elected President following a long deadlock with Aaron Burr in the House of Representatives. This happened mainly because Alexander Hamilton considered Burr the more dangerous man and he gave his support to Jefferson. Jefferson's election was a great victory for the democratic forces, but it was black Tuesday to the thousands of Federalists who believed that the Republican leader was an atheistic anarchist who feared that his administration would be that of a bloodyhanded revolutionist.

You Decide Paper Cultural Diversity

We don't know if their culture will assimilate with our work environment culture. Everyone tends to set a precedent before the new legible candidate is thought of either if they will be male or female or white, black, Hispanic, Asian or Middle Eastern. Employees tend to already, after so many years of working with one another, tend to formulate certain cliques based on age, race and other characteristics even on education background and experiences.For this position sales manager of F-fiber Optics, I want to make an unbiased decision on who I pick for the right ethical reasons and not based on any of those criteria but based on merit, experience, education and of course legality (citizenship). In reading about all of the candidates that eave applied for the sales manager position, I'd have to say that they all had impeccable short bios, but to me only two stuck out from the group. Would have to pick between Lynn the IT Manager and Karen the Sales Representative.They both have some kn owledge in Fiber Optics and its engineering and also experience in sales. I think although Lynn would be a great candidate for the job, she would have some trouble acculturating to the job because of her lack of speaking English well and trying to assimilate to our American culture. She would have to catch on fast in order to gain more of respective clients. Her short bio did not state if she was single or had a family, so should be possible candidate to be able to Stay late hours to work on certain projects and to gain clients.The next potential client I would lean closely toward is Karen because of her background graduating in Fiber Optic engineering. She would definitely have a lot of experience in the field and had been awarded the Sales Representative of the year award. She has valid experience in selling and captioning people to want to buy a product. I don't think she would have any issues in connecting with potential clients. The job calls for having to stay after 5 P. M.I d on't think Karen with just getting married would have that time to want to spend the extra hours at work. Lynn was a math major and minored in computer analysis and just because she wrote a paper on Fiber Optics doesn't been she is an expert on it. I would ultimately choose Karen the sales rep because she had graduated in the field and I see her possible potential to grow and learn more. She also has experience in sales. I could mold her into how want her to be and this would not only help her but would help me move up the ladder.

A critical analysis of the role of popular culture in creating and maintaining learning across British society

In the following study I will be examining the way that popular culture has affected British public in relation to learning. I will be first examining previous times and the ways in which popular culture has influenced people over time. I will be concentrating on the effects that music and advertising has had and shaped society over time, and the methods these mediums have used to achieve this. Throughout the last century British culture has been dramatically transformed through popular culture, the development of major corporations, the changing methods of the current governments of the time, and the development of methods that popular culture can reach the public, all contributing to an extreme alteration in the way society as a whole behaves. Before the industrial revolution, popular culture was based on the agricultural year and around religious festivals for example, harvest, plough Monday, Easter, Christmas etc.) There was no division of the classes. Everyone joined together in recreation and entertainment. In the nineteenth century however, there was a considerable change. A sharp rise in urbanisation meant people flocked to the cities away from the agricultural areas to the industrial centres. There was therefore a massive decline in the meaningfulness of the agricultural festivals. In the city there was a physical separation of the classes, the working classes living tightly together in houses built specifically to house workers. There were far fewer public holidays as the agricultural ones were regarded as obsolete. There were fears about the amount of control the rich had over the working classes, as there was in the church. The working classes saw how they were treated by the Church Of England in the city very different to what they were used to. Many theories arose about the church and how it was corrupt. A man called John Leicester believed the Church to be corrupt and began his own church. The Methodist church, derived from the Czech Maravian Church. Methodist churches have no icons, statues, or grand features such as stained glass. Many working class people became Methodist due to the supposed corruption of the Church of England and its discrimination against the poor. This caused worry among the upper classes that the working classes could rise up against them. At this time, Irish Catholics were brought over from island to dig the canals. With them they brought the Irish Catholic faith. The Irish were regarded as extreme underclass and were very poor, therefore Catholicism was regarded as a religion for the poor. Yet another new faith for the working classes. There was increased fear of revolution as the inventions of new non-conformist churches happened. More and more controls and legislation were applied to prevent the uprising of the working classes. The Age of Interference The worries that the upper classes had of a possible revolution caused them to impose many rules on popular pursuits such as cricket and football. There was also a move to open parks and museums and other recreational facilities to distract the working classes not only from drinking and riots, but political movements and uprise. There was also a bought of middle-class pursuits invented such as Thomas Cook Holidays. Advertising Advertising is very easily exposed to the public. Advertising is available in a large variety of mediums, television being a main outlet, radio, posters, billboards, signs, newspapers and more, a more recent method being the internet. All of these things we come into contact with everyday. A very effective medium for advertising is the radio. This reaches people while they are doing other things, like driving or working, unlike television, which people only see when they have specifically sat down to watch it. Roland Barthes (1950-1980) studied semiotics, which is the study of signs and how we interpret them. He said that we receive subliminal messages through adverts without knowing it, this in turn making us want to buy the product/service. Roland Barthes dismantled images, the most known example of this being a picture of a black French Cub Scout saluting, and used his three levels of deconstruction to find hidden meaning to the image. This can be applied to images and advertising we now see today. Phallic symbolism was and still is used today within advertising, especially on television and is found to be extremely effective. The Cadbury's Flake television commercial is a prime example. But of course, a few hundred years ago, television would not have been about and advertising would have been restricted to other mediums. Before the industrial revolution, posters or leaflets would have not worked because there was mass illiteracy at those times because of the lack of education facilities available to the general public. After the revolution though, there was more education available to both children and adults of the working classes. But what is ‘working class.'? Karl Marx was the founding father of communism and is referred back to consistently when definitions of social class are made. Born in Germany in 1818, Marx lived in France, Belgium and London. He was an associate of Engels, with whom he devised the Communist/Economic Determinist Theory. This stated that there are two types of people. The Proletariat (who by efforts produce wealth) and the Bourgeoisie (the owners of factories and profits who exploit the proletariat). In 1847 Marx attended a meeting in London, the groups aim being ‘the overthrow of the bourgeoisie and the domination of the proletariat.' In this, Marx was willing the working classes to rise up against the bourgeoisie. Marx had many followers, an important one being Gramsci. Gramsci was born in 1891. A believer in Marxism, joining the Communist party in 1921, he was an avid supporter of all of Marx's proposals, but he thought that his theories were too focused on economics and take into account the other factors enough, with culture being a crucial example. The Gramscian model was called the hegemony model. Through this, Gramsci said that the upper classes use a form of propaganda to suppress revolution of the working classes. He claimed the working classes would begin to resent how much power was had over them and revolt. At that point, the powerful people would stop the revolution by giving the rebels a little of what they demanded to curb them. For example, there was a move to encourage people to read more political literature. Communists used this to provoke revolution through leaflets and articles. The Government automatically put a large tax on all forms of literature, resulting in an underground illegal press. Within time though, the government lifted the tax and promoted the reading and publishing of cheap magazines, which distracted people from the political literature, therefore no one read the communists provocations. So, Marx's ideas had been supported and followed by many, but the revolution they all predicted and encouraged never happened. Why? The working classes never revolted because the industrial revolution meant increased prosperity to all. Marx expected more solidarity among the working classes than there actually was and this stratification meant that revolution was never fully supported. Education at this time was limited. Children would attend Sunday schools and learn to read. There were also ‘Bell Schools' in which educated pupils would teach each other. These children would then go home to their (probably illiterate) parents and read to them, thus the parents learning as well as the children. Better education meant new technology was being developed. The printing press was introduced in the late 1860s, this resulting in many forms of writing being freely available. Not only news, but entertaining stories like ‘Penny Dreadfuls' that became very popular among the working classes. The Education Act of 1870 meant that education was available to all people whatever their class all over the country. Mass literacy ensued and more and more reading materials were being produced to entertain and inform. Literacy has had a massive effect on the way we live and how we learn and the availability of education is so huge compared to those a hundred years ago. Although mass literacy was an extremely important development in our culture and its effects are colossal, there are other ways in which popular culture affects learning in societytoday. Advances in education meant more technology was being invented. Music was becoming more and more inventive as time went on because of the new ways of producing it and publicising it. The advent of music halls was a very important step in social development. Before the industrial revolution, the workers would often drink habitually throughout the days while working the land. When they moved to the cities and worked in the factories, obviously drinking was not tolerated. Urbanisation meant that all had more money to spend because of their pay in the cities, therefore more money to spend on alcohol. This meant that the workers would come home and drink the equal amount they would have over the day while on the farms, in one evening. Drinking created social decline, causing a large spread of violent drunken behaviour, rape, domestic abuse, child negligence etc, prompting the authorities to provide evening entertainment for the working classes, to prevent the boredom and the need to drink. Thus, the music halls were born. Music halls were popular all over Britain, and drew in both the working classes and the upper classes to shows involving many different types of people singing patriotic songs or amusing acts, often by women. A famous example of performer was Vesta Tilley. Tilley would often impersonate men, mainly ‘pencil pushers', the middle-class men who worked in offices and the like. Tilley would dress in drag, and impersonate and ridicule these type of people, much to the amusement of the working class people who often detested these type of people. Tilley's most famous song was ‘Burlington Bertie'. As WW11 began, music changed within society. Patriotic songs like ‘Pack up your troubles in your old kit bag' and ‘Jerusalem' were very popular as was all uplifting nationalist music at the time. The Frankfurt School This was a group set up in 1923 mainly made up of Jewish intellectuals threatened by the Nazis. With beliefs similar to Gramsci's they believed that the working classes had been ‘pacified' into accepting capitalism by ‘Commodity Fetishism' (the creation of false needs. The most famous three members of the Franfurt school were arguably Adorno (1903-1969), Max Horkheimer (1895-1973) and Herbert Marcuse (1898-1979). Adorno devised many theories concerning popular culture, many of which are still used today. In Dominic Strinati's work An Introduction To Theories Of Popular Culture, features a quote from Adorno giving his view on popular culture and the way in which it is used. ‘In all its branches, products which are tailored for the consumption by masses, and which to a great extent determine the nature of that consumption, are manufactured more or less according to plan†¦ This is made possible by contemporary technical capabilities as well as by economic and administrative concentration. The culture industry intentionally integrates its consumers from above. To the detriment of both it forces together the spheres of high and low art, separated for thousands of years. The seriousness of high art is destroyed in speculation about its efficacy; the seriousness of the lower perishes with the civilisational constraints imposed on the rebellious resistance inherent within it as long as social control was not yet total. Thus, although the culture industry undeniably speculates on the conscious and unconscious state of the millions towards which it is directed, the masses are not primary but secondary, they are an object of calculation, an appendage o f the machinery. The customer is not king, as the culture industry would have us believe, not its subject but its object'. (Adorno. Strinati D. 2004..) This indicates the belief that the authorities within the culture industry shape culture in Britain through the search for profit. Adorno believed that the power lay within the culture industry and its products encouraged compliance and consensus. Adorno was very interested in music. Classically trained, he used is knowledge in the field and compared it with the modern music of the time. Popular music was completely different to the classical style he had be taught. He said that in popular music, ‘the beginning of the chorus is replaceable by the beginning of the innumerable other choruses†¦.. every detail is substitutable; it serves its function only as a cog in a machine.' Adorno maintained that this is different to in classical music where the music provides ‘a musical sense from the totality of the piece and its place within that totality.' Adorno believed that popular music was in no way creative or intuitive, merely ‘to please the masses.' At the time of Adorno, dramatic changes in popular music were happening. The 1950s brought about the uprising of the ‘teenager'. Artists such as Buddy Holly were idolised, American music being a strong upcoming force at this time. Musicians used not only their music to sell their records, but their appearances and attitude also. The rapidly altering types of music were a big worry to the government of the time. Many complaints were filed against many album covers and performances. Elvis for example was filmed from the waist up so his rotating hips were not broadcast! There were calls to ban many songs and particular album covers, like the cover of the Mamas and Papas album ‘If You Can Believe Your Eyes And ears', in which the band are shown in a bath together fully dressed. Record companies were forced to sign less ‘controversial' bands like The Monkees. Music has developed dramatically since. Bands such as The Clash promoted rebellious attitudes towards authority, as did the Sex Pistols, whose song God Save The Queen was banned by Radio One upon its release. A recent band who follow this theme are Anti-Flag who's most famous song ‘Fuck Police Brutality', is a blatant attack at the authorities of the country. Bands such as these are now very popular, their songs and attitudes being imitated by its listeners. These attitudes have spawned a variety of fashions, often involving the wearing of black hoodies, piercings and coloured hair. This is seen as a statement against society, a rebellion against conformity. Artists such as Eminem have come under serious criticism, charged with endorsing drug use and bad language. Emiem alone has been blamed on numerous occasions for behavioural problems children have allegedly developed after to listening to his records. One child committed suicide in the early nineties, his death blamed on Eminem's music. An alternative fashion trend has been born from black music, specifically rap. This involves the wearing of tracksuits, trainers, large gold chains and caps. Although this is merely a way of dressing, this type of outfit is often perceived by the general public as disruptive, indicating the person is a troublemaker, often being turned away from particular institutions for example clubs on account of their dress. Snoop Dogg, an American rap artist at the Live8 concert recently swore repeatedly both during his songs and between them, all at about lunchtime in front of millions of people both at the gig and watching on television around the world. Criticised heavily for this, he received a massive fine from the organisers of the event and forced to publicly apologise. Some claim that music such as his is very damaging to children and should not be released, let alone promoted. The governments of today are more lenient when allowing records from such bands to be released, but parental advisory stickers are put on if there is but one expletive within the record, and this means the record can not be sold to persons under the age of fifteen. With the invention of music videos, there have been many complaints concerning the content. A lot of modern music, especially music of black origin like r'n'b releases videos involving sexual scenes. This has caused outrage and has forced many videos to be scrapped completely, edited or blurred when shown. For example, the punk band Blink 182's video for the song ‘I Miss You' released in 2001 involved scenes of lesbianism and voyeur. These scenes were edited out, then the video was eventually taken off the television because of the amounts of complaints received about it. A very famous and recent example of prohibition by the government involving music videos is the infamous ‘Crazy Frog' song by Axel F. The video showed an animation of a frog dancing. The frog was naked and, although no distinctive genitalia were present, the Advertising Standards Committee received thousands of complaints from parents stating it was too explicit to be shown before watershed. The video was then edited, the aforesaid area blurred and allowed to be broadcast only after watershed (9pm.) The actions of governments when looking at the way they manipulate the music industry can be clarified when looking at Gramsci's hegemony model. The definition of hegemony by Gramsci: ‘A cultural and ideological means whereby the dominant groups in society, including fundamentally but not exclusively the ruling class, maintain their dominance by securing the ‘spontaneous consent' of subordinate groups, including the working class. This is achieved by the negotiated construction of a political and ideological consensus which incorporates both dominant and dominated groups'. (Strinati, D 2004). This definition indicates to us that the authorities according to Gramsci, prohibit the uprising of the lower classes through bowdlerization, restrictions and censorship. This is apparent when looking at popular music, and the radio. Radio Caroline was a pirate radio station set up in the 1960s by a group of people who rebelling against the strict control the government had over the music broadcast on the radio. To stop prosecution, Radio Caroline was broadcast from the sea off the shores of Britain so as to avoid breaking the law. Radio Caroline broadcast rock'n'roll, and music genres that the younger audiences would appreciate, music which was censored and restricted by the government, receiving little airtime. The government retorted by making the listening to Radio Caroline illegal, but this was ineffective, so they produced a new radio station called Radio One. This was obviously still controlled by the government, but played the popular music that Radio Caroline did. This is a strong example of hegemony, showing how the government changes its policies to give the impression that the public have got what they wanted, but still having that underpinning control. I conclude that popular music has had and continues to have massive influence on society today. Music such as ‘Jerusalem' around the time of the world wars was uplifting and gave people hope in the terrible times they lived through while the war was happening. In the 1950s, music changed dramatically and brought about certain fashion trends, some seen as damaging, but overall just another cultural change. Nowadays, music is less regulated, but we are still prevented from listening to particular types of music at certain ages, indicating the continuation of censorship enforced by the government. Hegemony in music is very apparent, a prime example being the banning of Radio Caroline and the censorship involved in the music industry today. I feel society has developed through music, as new music is born; new technology to improve it follows and so on. Music brings joy and entertainment, a medium through which thoughts are expressed and ideas are publicised. I feel that the censorship of music is meaningless, because as we develop as people, we can learn to accept maybe aggressive lyrics or offensive videos and tolerate them as just another part of someone's culture. Through music we learn and to censor our music is to stifle our growth as human beings.

Salvador Dali’s Childhood

â€Å"The two greatest strokes of luck that can happen to a painter are (1), to be Spanish, (2) to be called Salvador Dali. â€Å"Even today, Salvador Dali is considered one of the most influential and successful surrealist artist in history, yet not much is known about his childhood; and what we do know is incredibly vague. His childhood is what influenced many of the famous symbols and styles found in his paintings and made them what they are. Salvador Dalais surrealist artwork is amazingly vivid and filled with symbols from both his childhood and adulthood.From the symbolic melting clocks to the lesser known fried eggs. Even from a young age, Salvador was a very eccentric and somewhat disturbed child. â€Å"When I was three I wanted to be a cook. At the age of six I wanted to be Napoleon. Since then my ambition has increased all the time, (surrealists. Co. UK/ Dali:pH). Dali surely had many eccentric ambitions. From a cook too Napoleon, this now legendary painter has much histo ry that is clearly shown in his art. Dalais childhood was full of perverse and sadistic elements that were to become a major art of his symbolist paintings,† (surrealists. Co. UK/Dali:pH). As a young boy, Dali began to show signs of aggression, because of this he was sent away to live with a family friend who happened to be an artist. There he developed the want to become an artist and explored other passions, such as pain. He was masochistic and would throw himself down the stairs because the pain influenced him. He had said, â€Å"The pain was insignificant, the pleasure was immense. More often than not, his desire to be different came out as violence. In one incident, pushing his friend Off 15-foot bridge to watch him fall. Salvador eccentricities didn't fade with age, if anything they intensified. â€Å"Almost everything he tried, he did well. He was a writer, a movie maker†¦ † (biography/people/ Salvador-Dali-40389? Page=1). Dali himself said that he would no t be forgotten, he made sure of this by spreading his name to all sections of the artistic community.He designed ‘dream sequences' for Alfred Hitchcock to use in his 1945 movie Spellbound, (biography/people/Salvador-Dali-40389? Page=1). He also collaborated with Walt Disney to create the short animated film, Destine. â€Å"Bizarre and outlandish, Dali often took part in performance pieces that were despised by critics,†(biography/people/ Salvador-Dali-40389? Page=1). Because he was never broody or quiet critics never took him seriously. To them an artist was secretive and every piece was to be a show case of the artist's deep sorrow and talent.Salvador really Just wanted his artwork to be seen by the masses, so much so that he created paintings specifically for companies o sell their products. Dalais matter of revealing the gap between reality and illusion influenced all manner of modern artists. Beyond developing his own symbolic language, Dali elaborated a way to repr esent the inner mind,† (transitory. Org/artist-Dali- Salvador. HTML) He used vivid imagery to show what he thought and felt. He knew how to create hypnotic art that memorized and inspired like no other artists could. On his death bed scientists asked if the melting clocks represented Einstein theory of lethality, he said ‘No its based on my perception of Camembert cheese melting in the sun. ‘ Dalais symbolism seems very profound and thoughtful and at some level it is. Ants and flesh represent an encounter with a wounded bat. Food like the fried eggs comes from Dalais childhood urge to be a cook. Instruments of mutilation are a tribute to Dalais sad-masochistic behavior and thoughts. His art has always Just been the thoughts and memories of an eccentric life and mind. Nothing more and definitely nothing less.

Market Efficiency and Market Failure

CHAPTER 4 Market Efficiency and Market Failure 1. Chapter Summary Governments of over 200 cities in the United States have placed ceilings on the maximum rent some landlords can charge for their apartments. Some firms have coaxed governments into imposing price floors, which are legally determined minimum prices that sellers may receive. To understand the economic impact of government interventions in markets, it is necessary to understand consumer surplus and producer surplus.Consumer surplus is the dollar net benefit consumers receive from buying goods and services at market prices less than the maximum prices they would be willing to pay. In a demand and supply graph, consumer surplus equals the area below the demand curve and above a horizontal line drawn from the price axis to the point on the demand curve that represents the market price. Producer surplus is the dollar net benefit producers receive from selling goods and services at prices greater than the minimum prices they w ould be willing to accept.In a demand and supply graph, producer surplus is equal to the area above the supply curve and below a horizontal line drawn from the price axis to the point on the supply curve that represents the market price. In a competitive market, the equilibrium price for a good or service occurs at the quantity of product where the marginal cost of the last unit produced and sold is equal to the marginal benefit consumers receive from the last unit bought. Therefore, equilibrium in a competitive market results in an economically efficient level of output.At this same level of output economic surplus, the sum of consumer and producer surplus in this market is maximized. Some producers who believe an equilibrium price is too low will lobby for government action to set a higher legal price (a â€Å"floor price†). Some consumers who believe that an equilibrium price is too high will lobby government to legally require that a lower price (a â€Å"ceiling priceâ⠂¬ ) be charged. Although price ceilings and price floors are not common, they have been established in some markets. Price floors were established in gricultural markets in the United States during the Great Depression. Government intervention in agriculture has continued ever since. Although the administration of price floors can be complex, the basic operation of this price control involves a government commitment to maintain a price (for example, $3. 50 per bushel of wheat) that exceeds the equilibrium price (for example, $3. 00). The price floor reduces the quantity demanded of the product while it encourages producers to increase the quantity supplied.The difference between these two quantities, a surplus, is typically bought by government at the floor price. The result of the price floor is to (a) transfer some consumer surplus that would exist at the equilibrium price to producer surplus and (b) create a â€Å"deadweight loss† or a net loss of consumer and producer s urplus. The deadweight loss is also the efficiency loss that results from the price floor. Another example of a price floor is the â€Å"minimum wage,† which is a legal wage imposed above the equilibrium wage offered in the United States for most occupations.Since most workers earn wages above the minimum wage, this price (wage) floor affects low-skilled and inexperienced workers. Although the economic impact of the minimum wage is similar to that of price floors imposed in other markets (deadweight losses result), economists have disagreed about the extent to which the minimum wage reduces employment. Price ceilings are found most often in the markets for apartments in various cities; local governments will usually impose this type of price ceiling.In New York City, about 1 million apartments are subject to rent control. A simple description of the impact of a price ceiling on rent (administration of the ceiling will vary by city and over time) is that the quantity demanded at the ceiling price, for example, $1,000 per month, exceeds the quantity supplied. In contrast, if an equilibrium price of, say $1,500, were allowed, the quantity supplied would be greater and the quantity demanded would be less; these two quantities would be equal and there would be no shortage of apartments.The results of the price ceiling are to (a) transfer some producer surplus to consumer surplus and (b) create a deadweight loss or a net loss of consumer and producer surplus. Another possible result of the ceiling is the creation of a â€Å"black market† where buyers agree to rent apartments from landlords for greater than the legal price. Because the ceiling reduces quantity supplied, the black market price may exceed the equilibrium price. An externality is a benefit or cost that affects someone not directly involved in the production or consumption of a good or service.Negative externalities are costs imposed on non-consenting individuals. Positive externalities are benefits for individuals not directly involved in producing or paying for a good or service. Externalities interfere with the economic efficiency of a market equilibrium since they cause a difference between the private cost of production (the cost borne by the producer of a good or service) and the social cost, or the private benefit from consumption (the benefit received by the consumer of a good or service) and the social benefit.The social cost is the private cost plus any external cost resulting from production; the social benefit is the private benefit plus any external benefit that results from the consumption of a good or service. When there is a negative externality as the result of production, the market supply curve understates the true (social) cost of production. A supply curve that reflects social costs would lie to the left of the market supply curve. The equilibrium market price occurs where the marginal social cost of production exceeds the marginal benefit to cons umers and there is a reduction in economic surplus.Economic efficiency would be increased if less of the good or service were produced. When there is a positive externality, the market demand curve understates the social benefits from consumption of a good, and the demand curve that reflects the social benefits of this good would lie to the right of the market demand curve. At the equilibrium point, the marginal benefit exceeds the marginal cost and a deadweight loss results. Because of the positive externality, too little of the good is produced.Negative and positive externalities lead to market failure due to the absence of private property rights for physical property (for example, a store or factory) or intangible assets (for example, for a new idea to improve a production process). Market failure may also result from the difficulty of enforcing private property rights (for example, lax government enforcement of copyright laws). Most of the time, the governments of the United St ates and other high income nations provide adequate enforcement of property rights, but in certain situations, these rights do not exist or cannot be legally enforced.When private solutions to externalities are not feasible, government intervention is justified. For example, by imposing a tax equal to the external costs that result from production of a good, government can â€Å"internalize† the externality. This causes the social, not just the private, cost of production to be borne by producers. In effect, the supply curve for the good shifts to the left. This supply curve would then cross the demand curve at a higher equilibrium price and lower equilibrium quantity. When production of a good produces a positive externality, government can internalize the externality by providing a subsidy to consumers.If the subsidy is equal to the value of the externality, this has the effect of shifting the demand curve for the good to the right; market equilibrium is achieved at the eco nomically efficient level with a higher price and quantity. To reduce pollution, governments have often used a â€Å"command and control† approach. This may involve government imposition of quantitative limits on amounts of pollution firms can emit or the installation of specific pollution control devices. An exception to the command and control approach was the U. S. overnment’s attempt to reduce acid rain pollution. In the Clean Air Act passed by Congress in 1990, a reduction in sulfur dioxide emissions, a major cause of acid rain, from electric utilities was mandated. To achieve this goal, utilities were allowed to buy and sell emissions allowances. Each allowance is equal to one ton of sulfur dioxide. So long as the total amount of emissions does not exceed an annual mandated maximum amount (by 2010 this amount will be 8. 5 million tons), firms can emit sulfur dioxide in amounts equal to their allowances.Firms that face high costs of reducing sulfur dioxide have an incentive to buy more allowances than they have been allocated. Utilities that can reduce their emissions at low cost have an incentive to do so and sell some of their allowances. This program has achieved emissions reductions at much lower costs than had been expected in 1990. The success of the sulfur dioxide program has led some to suggest that a similar program be used by the United States and other nations to reduce emissions of so-called â€Å"greenhouse gases† that contribute to global warming. . Learning Objectives Students should be able to: †¢Understand the concepts of consumer surplus and producer surplus. †¢Understand the concept of economic efficiency, and use a graph to illustrate how economic efficiency is reduced when a market is not in competitive equilibrium. †¢Use demand and supply graphs to analyze the economic impact of price ceilings and floors. †¢Identify examples of positive and negative externalities and use graphs to show how ext ernalities affect economic efficiency. Analyze government policies to achieve economic efficiency in a market with an externality. 3. Chapter Outline Should the Government Control Apartment Rents? 1. Rent control is an example of government regulation of prices. Rent controls (a type of price ceiling) exist in about 200 cities in the United States. Although the rules that govern rent control are complex and vary by city, rent control drives up the demand and price for apartments not subject to the controls. Consumer Surplus and Producer Surplus 1.Consumer surplus is the difference between the highest price a consumer is willing and able to pay and the price the consumer actually pays. 2. Producer surplus is the difference between the lowest price a firm would have been willing and able to accept and the price it actually receives. A. Consumer and producer surplus represent the net benefits consumers and producers receive from buying and selling a good or service in a market. B. Pric e ceilings and price floors reduce the economic surplus (this is consumer surplus plus producer surplus in a given market).C. Marginal benefit is the benefit to a consumer from consuming one more unit of a good or service. D. The height of a market demand curve at a given quantity measures the marginal benefit to someone from consuming that quantity. Consumer surplus refers to the difference between this marginal benefit and the market price the consumer pays. E. Total consumer surplus is the difference between marginal benefit and price for all quantities bought by consumers; this is shown in a demand curve as the area below the demand curve and above the market price.F. Marginal cost is the additional cost to a firm of producing one more unit of a good or service. G. The height of a market supply curve at a given quantity measures the marginal cost of the last unit produced for the producer. Producer surplus refers to the difference between this marginal cost and the market price the producer receives. H. Total producer surplus equals the difference between marginal cost and price for all quantities sold by producers. The Efficiency of Competitive Markets 1.When equilibrium is reached in a competitive market, the marginal benefit from the last unit sold will equal the marginal cost of producing that last unit. This is an economically efficient outcome. A. If less than the equilibrium output were produced, the marginal benefit of the last unit bought would exceed its marginal cost. B. If more than equilibrium quantity were produced, the marginal benefit of this last unit would be less than its marginal (opportunity) cost. C. Economic surplus is the sum of consumer and producer surplus.Economic surplus, or the net benefit to society from the production of a good or service, is maximized at equilibrium in a competitive market (when there are no externalities). D. A deadweight loss is the reduction in economic surplus resulting from a market not being in competi tive equilibrium. E. Economic efficiency is a market outcome in which the marginal benefit to consumers of the last unit produced is equal to its marginal cost of production, and where the sum of consumer and producer surplus is at a maximum. Government Intervention in the Market: Price Floors and Price Ceilings 1.Though the total benefit to society is maximized at a competitive market equilibrium, individual consumers would be better off if they could pay a lower than equilibrium price, and individual producers would be better off if they could sell at a higher than equilibrium price. 2. Consumers and producers sometimes lobby government to legally require a market price different from the equilibrium price. These lobbying efforts are sometimes successful. 3. Price floors were established in agricultural markets during the Great Depression in response to pleas from farmers who could sell their product only at low prices.A. A price floor is a legally determined minimum price that se llers may receive. B. A price floor encourages producers to produce more output than consumers want to buy at the floor price. C. The surplus (equal to the quantity supplied minus the quantity demanded at the floor price) that results from a price floor is typically bought and stored by the government. D. The marginal cost of the last unit produced exceeds its marginal benefit and there is a deadweight loss which reflects a decline in efficiency due to the price floor. 4.A price ceiling is a legally determined maximum price that sellers may charge. A. Price ceilings are meant to help consumers who may lobby for a price ceiling after a sharp increase in the price of an item on which they spend a significant amount of their budgets (for example, rent and energy). B. At the ceiling price, the quantity demanded is greater than the quantity supplied so that the marginal benefit of the last item sold (the quantity supplied) exceeds the marginal cost of producing it. C. Price ceilings resu lt in a deadweight loss and a reduction of economic efficiency.D. Price ceilings create incentives for black markets. A black market refers to buying and selling at prices that violate government price regulations. Externalities and Efficiency 1. An externality is a benefit or cost that affects someone who is not directly involved in the production or consumption of a good or service. A. Positive externalities refer to benefits received from a good or service by consumers who do not pay for them. B. Negative externalities refer to costs incurred by individuals from a good or service for which no one pays.C. A private cost is a cost borne by the producer of a good or service. D. A social cost is the total cost of production, including both the private cost and any external cost. E. A private benefit is the benefit received by the consumer of a good or service. F. A social benefit is the total benefit from consuming a good, including both the private benefit and any external benefit. G. A negative externality causes the social cost of production for a good or service to be greater than the private cost. As a result, more han the economically efficient level of output is produced. H. A positive externality causes the social benefit from the production of a good or service to be greater than the private benefit. As a result, less than the economically efficient level of output is produced. A. Market failure refers to situations where the market fails to produce the efficient level of output. B. Figure 4-9 illustrates the effect of acid rain on the market for electricity and the deadweight loss that occurs due to a negative externality. C.Figure 4-10 illustrates the impact of a positive externality in the market for a college education and the deadweight loss caused by this externality. 3. In the absence of private solutions to externalities, government intervention is warranted. To achieve economic efficiency, governments may intervene in different ways. A. To red uce pollution, â€Å"command and control† policies have often been employed. A command and control approach refers to government-imposed quantitative limits on the amount of pollution firms are allowed to generate, or government-required installation by firms of specific pollution control devices.B. Since 1990, a market-based approach to reducing sulfur dioxide emissions from electric utilities has reduced emissions at much lower cost than was expected. The success of this approach has led economists to advocate more extensive use of market-based approaches, and less use of command and control policies, to reduce other forms of pollution. Homework Problems – Not to be submitted: 1. From the Review Questions: Try all of them! 2. From the Problems and Applications: #s: 3, 4, 5, 16, and 20. 3. From the APPENDIX: REVIEW QUESTIONS #S 3 AND 4.