Pizza Hut, Yum! Essay

The operations standards are the key path defining elements in any business. Without set procedures optimal results cannot be obtained. The operations standards at pizza hut have multifaceted challenges and opportunities. The standards and procedures for doing business are well defined but some of the possible factors can cause to the deviations and variances. Those possible factors can be eradicated through extra efforts into the process. However the small chances of variance will remain the same because the real business scenarios may vary sometimes than the forecasted one. This report is an attempt to investigate the operational standards and the possible causes of variance in standards and how does it affect customer satisfaction. Introduction Operations management Traditionally it is believed that the operations management is as a transformation process that takes set of inputs and transforms them into the out put. The output can be the goods or services. This includes the effective planning, scheduling and control of the activities that produce the required outcomes. (Cecil C. Bozarth, Robert B. Handfield, 2008). Operations management plays a key role in determining the success or failure of an organization. To carry forwards the inputs of each unit all together and getting turned it into the outputs is the real synergy, which helps organization to set the directions towards climbing the heights of success. According to the William J. Stevenson as he state in his operations management book ‘Operations management is the management of the system or process that create goods and/or provide services’ this involves various inputs, he add, ‘ the creation of goods or services involves the transformation or conversion of inputs into outputs. Such as capital, labour and information are used to create goods or services using one or more transformation processes’. Although the goods and services go hand in hand, there are some very basic differences between the two. This can be determined through its nature of the business. Some organizations can have higher degree of tangibility or intangibility. This can be determined through its nature of business. For instance, if the organization is selling goods, it can be determined high level of tangibility and otherwise if its selling services then level of intangibility will be high. (William J.Stevenson 2005). Operation standards at Pizza Hut Functional Units The activities of business organizations are mostly divided according to the functionality, the management of the personnel and the responsibilities. (Joseph S. Martinich, 1997) The operations at Pizza hut can not be highlighted for any of the single functional unit. Rather it is the collection of several set of the activities that take place with in the unit and make things possible by turning customer expectations into the reality. The success or the failure of the product depends on the performance of several functional units. Those functional units operate separately but connected with each other through the job activities. The unit’s operation standards are discussed further down. The taste and the quality highly determine on the freshness of the ingredients, and the resultant the happiness of the customers. According to the Deputy Manager of Pizza hut, ‘If, there is variance observed in the product quality that will overall affect productivity and finally the customer satisfaction level. This is not acceptable at all’. He added, ‘if company is spending a huge amount of money on the product promotions and marketing activities that is for the business. And also company provides the training to the employee to how to maintain the product quality. So every single person should have to ensure the quality of the product and happy customer makes more return in the future’. In this regard, company has got set procedures and guideline to maintain the standards for the specified interactions between the employees and customers. If the deviations occur that will likely to lead to the unhappy customers. Food temperatures To keep products safe storage the temperature of freezers should be in between -18 to + or – 5 degree centigrade. The seals must be intact so that the temperature can be maintained. Quality Assurance The quality throughout the supply chain rests with the overall team. This is done by setting rigorous standards during product development. In order to ensure the standards, there is regular auditing and monitoring system in place. The one of the regular system to check quality is CHAMPS Excellence Review. Quality assurance is achieved through the complaints monitoring system and their corrections through available remedial methods. Core Competence. Organizational strength or abilities, developed over a long period, that customers find valuable and competitors find difficult or even impossible to copy. (Cecil C. Bozarth, Robert B. Handfield, 2008) The pizza hut has got high degree of core competence in the basic product. The pizza hut’s dough is treated as core competence of the business. This makes pizza hut different then the competitors. Cost & variance The cost of sales and the sales revenue are the actual things that support the managers to run the business on track. If the numbers seems going out of the track they need be highlighted and called as variance. The variance is the difference between the Actual cost and Theoretical Cost. Head office set forecast and provide targets to the business stores. The targets are set with the help of previous year business performance and the expected events. That is called as theoretical cost. On the other hand the cost occurred in the business dates is the actual cost. So if there is any difference occurs that will be treate as variance. The cost of sales of the store for the current period shows the variance of 36. 38. * The theoretical cost set by management was ? 2203. 22 and in percentage 22.46% where as the actual cost for the period occurred was ? 2239. 60 in percentage 22. 83%. The results indicate the variance remained ? 36. 38. The variance in costing is the actual indicator of the performance. Higher the variance depicts higher the concerns persist with in the business unit. In present case in hand, the above depicted variance treated to be normal. The business operations can not work on the absolute set tracks because the forecasted things can not happen on the absolute behaviours as predicted. Reasons of variances * Miscount The chance of miscounting always prevails during the operations. In the case of miscount the chances of wrong order increase and finally will increase the variance. * Wastage The several reasons for wastage may occur during the operations. However if forecast made is not effective then the chances of unexpected results may increase. That applies with the product forecast as well. If product is defrosted without realizing the demand for the product then this may cause to one of potential wastage. In other case the wastage can increase if no proper product forecast is being made and or staff make mistakes while making orders or at the time of dispatching orders. In any case if wrong delivered to customer the customer will complaint against it and in order to make customer happy the order is to be resent. This will certainly increase the cost. Higher the number of complaints more is the cost. These two factors are directly proportional. * Shrink The shrink may occur if inventory reduced without record. The variance shows the real picture of the business operations. Happy customers return back to business and become repeat customers and cause to increases in the sales revenue of the business. However, If sales revenue is running on the increasing trend or above of the forecasted track then it clearly indicates the successful operations of the business activities. And this will likely to decrease the percentage of variance as overall. Forecasting Forecasting the estimated demand is the real start of every single operational activity in the business unit. This involves every thing from human resource planning to the product planning. In this every single factor get into the touch of planning, organizing, and leading and control of the operational activities. This ultimately leads to the overall productivity of the unit. Forecasting product and customers demand is the most important activity for the b business organizations. (Derek L Waller 2003) Forecasting is very important element to carry forwards the business on the set line successfully up to the mark in efficient manners. (Joseph S. Martinich, 1997) The same goes true for the pizza hut business. According to the RGM ‘forecasting at pizza hut plays critical part for the success of the business’. The manager, prior to develop any plans for HR deployment or the food ordering, they observes the forecast of sales and expected upcoming events in the calendar. As per say, the usual shift requires two to three drivers and plus kitchen staff and the shift manager. Where as the number of drivers can increase on weekends, as high as 7 to 10 and 4 to 5 in store staff plus shift manager and support manager. This works fine when every thing works according to plans. However, if any of the external factors come into play then that can potentially affect the service delivery and the speed. This happens when for example the whether conditions. The road hazards in shape of blockades, accidents. All of these factors can slow down the serviceability. The unexpected orders can cause more demand of the product where as the availability of the ready to use product may be limited according to the expected demand for the shift. Therefore the variance in expected demand and actual demand can cause the shortage of the products and ultimately this can play around the one of the possible factors of the unhappy customer and can cause the variance in the productivity of the unit as over all. The demand can also increase because of the good weather, special occasions like sports, rituals, festivals, and purchasing power. According to the RGM of the unit, the demand for the food is high in the start of the month but that usually slow down in the end of the month due to the less availability of the funds with customers. Employee performance/training The training data base available at store and the views gathered from management team reveals the fact that the importance of the training in store is directly linked with the operations standards and productivity. The team member working on make table should have to be trained according to the specified requirements of the make table. The lack of training will cause the variances in operations activities. This directly results the variances in the customer satisfaction. Importance of Customer Experience Customer care is the core point of concentration behind the business. The business treats customers as king. The most important fact is to find out the ways through the customer want can be fulfilled effectively. Therefore there are some procedures and standards set by top management in order to interact with customer. Customers don’t really want relationships. At least not in the same way the brand does. They want to be treated well, respected, understood and to get what they want, when they want it. In other words, they simply want a good experience and the reassurance of knowing that they will have the same good experience every time they come into contact with the brand. So, if we the team get to the experience right, the opportunity to build meaningful relationships should follow. (Asbjorn Rolstadas, 1995 & Alan Mitchell Issue 5, Summer 1999) Pizza hut is selling pizzas but this is what other competitors have been doing. So what makes it really special about it? Who recognise that product alone? The product alone is nothing but the service is also important. That is the factor which make customers as ‘repeat customers’ The attitudes, values make key differentiations. The operational standards, the quality of food all of them are key factors. (Mary Say et all 2003, Issue 440) In order to achieve desired results the team members at Pizza hut are provided with set guidelines for the interaction with customers. The guide line called ‘moment of truth’ or ‘customer mania plus’. Moment of Truth The most important key elements to are set in this guidelines. (See Appendix 8) * Order taker The order taker is the key person who works as a bridge between the company and the customer. If he/she makes customer happy, the business will likely to repeat other wise can drain to the competitors. This results not only the loss of customer but also the loss of several networks of the lost customer. CHAMPS Excellence The order delivered to the customer should followed by the set procedures. The delivery person has provided particular guideline that he/she will have to follow when interacting with customers. This results in increase customer satisfaction. The other most important factors that the management follows are; * Delivered on time * Delivered completely. * Invoiced correctly. * Undamaged However, If any of the above factors missing from the cycle process of order making, then it start again from the make table. This * Response. (repeat customer/happy customer) * Complaints Resolving complaint * Offering service delivery * Offering hot food delivery * Beat the phone capture in busy times. * Beat the web orders There should be every reason for the return of the customer. Without fulfilment of the expectation that will not be possible. However the team at Pizza hut follows the guidelines and makes customers happy, but there may be several factors that may cause to the dissatisfaction. In general, the possible factors may be for instance, rush of customers and not enough staff available to take orders or to pick up a phone, bad quality, late delivery or the rude attitude. According to the pizza hut manual almost 2/3 of unhappy customers never return because of poor service. The RGM at store revealed the fact as ‘Customers don’t come pizza hut just for the food, they can get food anywhere. What most customers want when they visit or call us is a good time’. He adds, ‘when they order on phone they expect order takers to treat them well and make their time great. How do you do this? By having a service attitude and making customers feel welcome and important’. Marketing The Marketing plays very important role for the business. The customers actually receive message through marketing, thus it become very critical that the company should highlight the customer expectations in the marketing message. There are several set standards that are to be followed for the marketing purposes. (Francis J.Mulhern, 2004). The company invest considerable resources to find out the exact wishes of customers. For the Pizza hut’s delivery branches the segment of customers includes from families, to the teens. According to the Pizza hut database the primary customer are teens and young adults. Product Development The pizza hut success is not the matter of isolated activities. But it is the company’s restless efforts to put innovations into the realities by turning needs and wants in to the shape of products. Product development team run focus group to study the consumer behaviours towards product choices. Some time products are launched after having selected study of the chosen sample, but it does not survive for long time. This may cause occurrence of cost or the wastages to the stores. For instance the four for all, cheesy bread, Bombay wings, Indian pizza are all the examples of failed products. However the company has launched successful products as well. For instance cheesy bite pizza, which has cause around 24% increases in pizza sales over all. Company Profile Pizza hut started on 1958. The dream of Frank and Dan Carney turned into the reality when he opened the first Hut in Wichita, Kansas. The website of pizza hut states that in very beginning the restaurant was as too small. It had just 25 seats available for customers. The inspirations for the name as ‘Hut’ came into thoughts through the design of the building. It looked like a hut. Therefore it geared the idea to carry on with name as ‘Pizza Hut’. The Pizza has superior place in the market, particularly for the Pizza business. Through the time it has scattered in to the markets of the world. The numbers of the growth depicts that it Pizza hut has more than 600 outlets in the UK only. The Pizza hut is a part of Yum, which is another big company. The Yum own several big companies like KFC, Long John Silver’s, A & W Taco Bell The Pizza hut was formerly owned by Whitbread and Yum as a joint venture. But in the year 2006 Whitbread sold out their shares to Yum. Presently the Pizza Hut UK Ltd is now 100% owned by Yum! Conclusion The operations management depicts the performance of each and individual unit that is participating in over all acceleration of the engine of business. The business may have some times low speed and high speeds. It highly depends on the strategies that the top management set for the business and the way the strategies are followed by the key components that run the actual business. The operations at Pizza hut have multifaceted situations. The each component working in the process cycle of business plays equally important role to win the customer. However, if any one of the units deviating from the set standards will cause a variance in the performances as overall. Thus it is concluded that the success of the business is possible through collections of inputs from all the units participating in the conversion process.

Politics and Emigration Paper Essay

In Jen Sookfong Lee’s The End of East, the dreams and hardships of three generations of Chinese Canadians settled in Vancouver are explored profoundly. One dominant notion that is ever present is what leaving home symbolizes for Seid Quan – the first immigrant, Pon Man – his immigrant son and his youngest Canadian born granddaughter, Samantha. Leaving home for Samantha not only meant freedom from her own family, but also facing similar adversities like making countless sacrifices and enduring numerous obligations which both Seid Quan and Pon Man underwent as well. Although they are generations apart, they lived their lives in parallel lines; however, since they were not at ease with their own identities, they could not communicate with each other past their differences. Seid Quan was very sceptical from the beginning of his journey to Canada and all the opportunities that lie ahead of him. On the boat he hears, â€Å"†¦ but there would be jobs, good paying jobs, jobs with which you could feed your family for a year with two month’s pay and in a place with that kind of opportunity, the going could only be easy† (Lee 15-16). Even these words of promise couldn’t assure him as he clearly observed that he doesn’t see any rich man on the boat. Later, he is reminded by other immigrants that he can doubt all he wants, but remember how much money the people in his village saved to send him to this golden mountain (Lee 16). At that point he realises the moral obligation towards the villagers and prepares himself for the sacrifices he will need to make. Therefore, he picked up any work that came knocking i.e. cleaning at a tailor store. To deceive himself he would say, â€Å"As long as I can send money home, that’s enough for me† (Lee 29). For Seid Quan, leaving home meant an opportunity, a chance to end poverty for his family and the villagers back in China but at the cost of being lonely. Not only was he lonely from leaving everyone he knew behind; he never got the sense of belonging in Canada even after working hard, â€Å"They are not citizens and they do not vote, so, like the ge neration before them who died, weathered and forgotten, on the cold rail lines, their suffering is barely noticed† (Lee 44). For Pon Man, leaving home wasn’t a choice; rather it was imposed on him by his parents. Even though it wasn’t his preference, he had high ambitions and expectations from Vancouver, Canada. On the contrary, his dreams start to tremble since the very first day as he says to his father, â€Å"I don’t see anything worth money here, just a room we have to share.† Disregarding the fact that Pon Man grew a teenager without even seeing his dad, he did not like his father for plenty of other reasons. For example, he loves to draw on the sketchbook which was a go away present from his mom but according to Seid Quan, â€Å"this drawing is a waste of time, time that could be spent on working hard and helping me save.†(Lee 87) Secondly, he never liked working at the barber shop which his father owned, â€Å"Pon Man gagged whenever he had to touch the wet clumps of hair that gathered in the corners of the shop and collected in the sinks.† (Lee 75). He did not like that his life was totally governed by his dad every step of the way. However, he clearly remembers his obligations towards his dad from his mother saying, â€Å"You must do what your father tells you, even if you don’t like it or don’t want to do it†¦. He’s your father and deserves your obedience.† (Lee 80) Thus, leaving home for Pon Man not only meant leaving China where he lived for the first fifteen years of his life but also breaking free from the invisible shackles that bound his dreams and ambitions to his father. Home for Samantha was something she was frightened of, as she says, â€Å"But really I am simply afraid†¦ with my mother’s footsteps coming up quick behind me, I know that I have irrevocably returned† (Lee 3). Samantha’s mother Siu Sang was very controlling of her daughters and would expect nothing but perfection as it is evident when she starts throwing the dishes (with the smallest speck of g rease) just cleaned by her young daughters. She was obligated to listen to everything her mom asks, especially coming from a Chinese background. For a period of six years she had enjoyed the freedom from her family, escaping to Montreal for studying. However she had to sacrifice her freedom and come back due to her elder sister, Penny, getting married. She looks at Penny’s face and observes, â€Å"†¦ the loosening of the muscles around her eyes and mouth. I wonder if I looked the same when I left Vancouver for Montreal six years ago, delirious with the kind of happiness only escape can bring.† (Lee 6) She realizes that her obligations for her family have made her come back to the very place which she thought she has left for good. Conversely, this time around she is certain that she will never be able to leave her responsibility as the youngest daughter, taking care of her aging mother as she says, â€Å"†¦ they all left, gradually, one after the other. Somehow, it never occurred to me that, in the end , I would be the only one still here.† (Lee 62). Thus, leaving home for her meant escaping from Vancouver, escaping from her mother – towards her freedom. Leaving home for Seid Quan and Pon Man meant similar sacrifices and obligations; however, the small differences in their ideologies created a massive communication gap between the father and son. As Seid Quan tries to make his son understand the reason for coming to Canada, he elaborates saying, â€Å"There’s no money to be made in the village, just remember that† (Lee 74). He explains the hardships back home and the importance of money. However, he contradicts himself by saying, â€Å"It’s not about expensive things. It’s about hard work and saving and supporting a family† (Lee 74). Even after working in Vancouver’s Chinatown for many years, Seid Quan wonders, â€Å"if he will ever go home for good, or if he will always be stuck in this land that shimmers with rain and is not quite dream, not quite day.† (Lee 39) He wants t o go back home but again he thinks of bringing his family over as he says, â€Å"†¦we could have built something here, lived in a house, walked through Stanley Park together.† (Lee 45) Regardless of their differences, Pon Man was like his father in a few ways, always thinking dually and that life in China was better. For example after observing the place where him and his father will be staying he says, â€Å"Our house in the village was nicer, and it didn’t smell so mouldy.† (Lee 74) He also reflects that everyone, like him, wants to escape this city, for despite the trees and mountains and pure water, Vancouver is as cold and hard at its core as anywhere else in Canada. Even though he thinks of going back and the harsh conditions life threw at him, he stays in Canada, works hard in the morning and studies in evening to become an accountant, in which he finally succeeds and moves out of Chinatown. Both father and son lived their lives in parallel lines; however they could not communicate to each other as Shew Lin, wife of Seid Quan says, â€Å"her son and husband, two men who have barely said a dozen words to each other in the last year†¦Ã¢â‚¬  (Lee 166). They never learnt to express their feelings and had to keep their inner desires hidden, unspoken, forgotten but not forgi ven. It is apparent, when Pon Man thinks he needs to be forgiven by his father, whom he despised all throughout his life, â€Å"†¦ he knows he needs to be forgiven for something, but what?† (Lee 218). In addition, Seid Quan also wanted something similar as he thought, â€Å"it was beyond him, to imagine the things he would want to say to his son, the kinds of things, he would want to ask forgiveness for (Lee 239). Thus, the very notion of cognitive dissonance is vivid throughout both their lives. On the other hand Seid Quan barely spoke with his youngest granddaughter Samantha; not because of their gap in generation but rather less because both of them were not the talkative type. After all it is repeated over and over again, how less they speak about something that actually matters as it would not make any difference to what will actually happen. It always came down to what was needed; not for the individual but for the entire family. Besides their unspoken similarities, both shared an unbound connection to their birthplace. Seid Quan always wanted to go back to China after his debts were paid off instead of bringing the family over and Samantha always wanted to leave Vancouver but leaving this place was like leaving herself. (Lee 11). In addition, it was through finding of Seid Quan’s cigarette tin, Samantha unearth a lot about her grandfather as she found the Head Tax certificate (Lee 5). In comparison, both lives of Pon Man and Samantha were governed by Seid Quan and Siu Sang respectively. Both father and daughter were under their control and always sacrificing for the family in order to meet their obligations. For Pon Man, it meant giving up art and not pursuing education after high school. Not only his dreams had to be sacrificed, he also had to work in the barbershop against his will (Lee 75, 86-87). Along the same line, Samantha had to leave Montreal and come back to Vancouver and take the responsibilities of her mother; thus sacrificing her freedom and her love affair with Matt. Both Pon Man and Samantha take defiance as their only way to revolt against their over controlled lives. Pon Man disobeys Seid Quan and goes smoking with his high school friends (Lee 81) and Samantha defies her mother by going around and having rough consensual intercourse casually. However, both father and daughter pay a price for their defiance. Pon Man gets cancer from smoking which leads to his death and Samantha wakes up from a night’s sexual encounter with a pool of blood on her bed and a visit to the hospital (Lee 154,180). Maybe it was karma or just a co-incidence but nonetheless they both had to pay for their actions. The very essence of cognitive dissonance is prominent between Seid Quan, Pon Man and Samantha in Jen Sookfong Lee’s The End of the East. Duality guided their daily lives, always having to surrender their inner desires to meet the obligations required by their family. Since none of the characters could have a firm grip on their own identities, they always suffered from expressing their feelings, even to the ones closest to them. Thus, it caused the three generations to not be able to communicate with each other past their self identity crisis.

Actions Speak Louder Than Words

Automatic imitation – copying observed actions without intention – is known to occur, not only in neurological patients and those with developmental disorders, but also in healthy, typically-developing adults and children. Previous research has shown that a variety of actions are automatically imitated, and that automatic imitation promotes social affiliation and rapport. We assessed the power of automatic imitation by comparing it with the strength of the tendency to obey verbal commands. In a Stroop interference paradigm, the stimuli were compatible, incompatible and neutral compounds of hand postures and verbal commands. When imitative responses were required, the impact of irrelevant action images on responding to words was greater than the effect of irrelevant words on responding to actions. Control group performance showed that this asymmetry was not due to modality effects or differential salience of action and word stimuli. These results indicate that automatic imitation was more powerful than verbal command. 1 Actions speak louder than words Introduction Even when we do not intend to imitate others, we are inclined to copy their body movements. This tendency, known as ‘mimicry’ or ‘automatic imitation’, was once thought to be confined to patients with frontal brain damage (Lhermitte, Pillon, Serdaru, 1986), atypically-developing individuals (e. g. Charman Baron-Cohen, 1994), ‘savages’ (Darwin, 1989) and nonhuman animals (Thorndike, 1898). More recent research has shown that automatic imitation is also common in healthy, typically-developing adults (e. g. Wallbott, 1991; Lakin Chartrand, 2003; Brass, Bekkering, Wohlschlager, Prinz, 2000) and children (Simpson Riggs, 2007). The purpose of the present study was to estimate the strength of our tendency automatically to imitate the behavior of others by comparing it with the strength of our tendency to do what we are told; to perform actions on verbal command. Most previous research on automatic imitation has been concerned, not with the strength of this tendency, but with its pervasiveness and effects on social attitudes. Carefully controlled laboratory studies have found automatic imitation of facial expressions (e. g. Wallbott, 1991), as well as finger (e. . Brass et al. , 2000), hand (Heyes, Bird, Johnson, Haggard, 2005) and arm movements (e. g. Kilner, Paulignan, Blakemore, 2003). Studies investigating the ‘chameleon 2 Actions speak louder than words effect’ in semi-naturalistic social situations have shown that gestures such as eartouching and foot-wagging are automatically imitated, that this kind of mimicry can occur without the imitator’s conscious awareness, and that it prom otes affiliation and rapport between social partners (e. g. Lakin Chartrand, 2003). Indirect evidence of the pervasiveness of automatic imitation has been provided by functional imaging and transcranial magnetic stimulation (TMS). For example, imaging has shown that the observation of hand, foot and mouth movements activates the same areas of premotor cortex active during their execution (Buccino et al. , 2001). Revealing yet further specificity, the observation of hand and arm movements selectively increases TMS-induced motor evoked potentials from the particular muscles involved in executing these movement (e. g. Strafella Paus, 2000). In behavioral studies, stimulus-response compatibility (SRC) procedures are often used to detect automatic imitation. These procedures provide some indication of the strength of the automatic imitation tendency by showing that it can interfere with performance based on task instructions. For example, Kilner et al. (2003) instructed participants to make sinusoidal arm movements in a vertical plane while observing a model perform the same vertical movements (compatible condition) or sinusoidal arm movements in a horizontal plane (incompatible 3 Actions speak louder than words condition). Although participants were, presumably, equally motivated to obey instructions in the two conditions, their movements showed more, counterinstructional deviation from the vertical plane in the incompatible than in the compatible condition. Other SRC studies have shown that automatic imitation interferes, not only with the spatial properties of movement, but also with its timing. Participants instructed in a simple reaction time (RT) task to open their hand as soon as an observed hand began to move, initiated the opening movement faster when the stimulus hand opened than when it closed (Heyes et al. 2005). Similar studies have shown that automatic imitation can influence the timing of hand and finger movements even when the observed movements are taskirrelevant, i. e. when participants are instructed to respond, not to the observed movements, but to arbitrary stimuli such as digits (Brass et al. , 2000), crosses (Bertenthal et al. , 2006) or colors (Sturmer, Aschersleben, Prinz, 2000 ). As far as we are aware, only one study has explicitly compared the strength of automatic imitation with that of other response tendencies (Brass et al. , 2000). This study found that the impulse to imitate finger movements was stronger than the tendency to respond with finger movements to arbitrary symbols and to static spatial markers. The results were important in providing evidence that automatic imitation is genuinely automatic (i. e. that it occurs contrary to task instructions), and that it is not reducible to spatial compatibility (see also Heyes et al. , 2005; 4 Actions speak louder than words Bertenthal et al. , 2006), but Brass et al. (2000) provided only a very conservative estimate of the strength of automatic imitation. Theories of imitation assume that it is based on stimulus-response connections that are either innate (e. g. Meltzoff Moore, 1997) or the product of long-term learning (e. g. Heyes Ray, 2000). If this is the case, it is not surprising that the tendency to imitate is stronger than the tendency, based solely on task instructions, to respond differentially to symbolic cues. Like imitation, spatial compatibility effects depend on innate or learned response tendencies (Tagliabue, Zorzi, Umilta, Bassignani, 2000). However, Brass et al. s study did not show that automatic imitation is generally stronger than the tendency to respond to the site of stimulation; only that automatic imitation is stronger than spatial compatibility when the spatial cue is smaller and less dynamic than the body movement cue. The present study provided a more stringent test of the strength of automatic imitation by comparing it with that of the tendency to obey verbal commands. Like imitation, verbal command is a common method of instruction in everyday life, and the power of words to evoke actions is a product of deeply engrained mechanisms. Indeed, one theory of imitation, the associative sequence learning (ASL) model (e. g. Heyes Ray, 2000), suggests that the two response tendencies become engrained in the same way; that we learn to imitate through correlated 5 Actions speak louder than words experience of observing and executing action units, just as we learn the meanings of words through correlated experience of the words and their referents. We used a Stroop procedure to compare the strengths of automatic imitation and verbal command. There were four groups of participants. In the focal group (Manual-Auditory), participants were required in each trial to open or to close their hand in response to a compound stimulus. The compound consisted of an image of a hand in an open, closed or neutral posture, and the sound of a word: ‘open’, ‘close’ or a neutral nonword. In one condition, participants were instructed to imitate the action and to ignore the word (action-relevant task), and in the other condition they were told to obey the verbal command and to ignore the action (word-relevant task). In any given trial, the stimulus on the taskirrelevant dimension (the word in the action task, and the action in the word task) was compatible, incompatible or neutral with respect to the stimulus on the taskrelevant dimension. For example, in the action task, an image of an open hand was accompanied equally often by the word ‘open’ (compatible), the word ‘close’ (incompatible) and by a nonword (neutral). If the tendency to imitate is stronger than the tendency to obey verbal commands, then, in this focal group, one would expect the impact on performance of action stimuli in the word task to be greater than the impact of word stimuli in Actions speak louder than words the action task. More specifically, one would expect the compatible taskirrelevant stimulus to speed responding, and /or the incompatible task-irrelevant stimulus to slow responding, more in the word task than in the action task. However, an effect of this kind would not be sufficient to show t hat automatic imitation is stronger than the tendency to obey verbal commands, for two reasons. First, it could be that the action images used in this experiment were more salient or easier to discriminate than the word stimuli. In this case, one would expect action images to be more potent stimuli, not only for automatic imitation, but also for nonimitative responding. To address this issue, we included a second group of participants (Vocal-Auditory) who were presented with exactly the same stimuli as the focal group, action images in compound with word sounds, but they were required to make vocal rather than imitative responses. For example, in the action task, this group said ‘open’ when they saw an opened hand, and ‘close’ when they saw a closed hand. Langton, O’Malley, Bruce (1996, Experiment 5) found that irrelevant gestures affected vocal responses to words to the same extent as irrelevant words affected vocal responses to gestures. Therefore, we expected that, in contrast with the focal group, the performance of the Vocal-Auditory group would be affected equally by irrelevant actions in the word task, and by irrelevant words in the action task. 7 Actions speak louder than words The second issue concerns modality of stimulus presentation. In the focal group, actions were presented visually and words were presented in the auditory modality because those conditions are typical of everyday life. In the course of development, it is likely that simple verbal instructions, consisting of a single word, are more often heard than seen. However, because spoken words unfold over time, whereas images are instantaneously available for processing, auditory presentation of verbal commands could put them at a disadvantage. In other words, if irrelevant actions have a greater impact than irrelevant words in the focal group, this could reflect, not the relative strengths of automatic imitation and verbal command, but faster processing of visual than auditory stimuli. To address this issue we included two further groups in which the word stimuli were written rather than spoken. One of these groups (Manual-Visual) made hand movement responses, and the other (Vocal-Visual) made vocal responses. Thus, there were four groups: Manual-Auditory, Vocal-Auditory, ManualVisual and Vocal-Visual. We predicted that in the focal Manual-Auditory group the effect of irrelevant actions on speed of responding to words would be greater than the effect of irrelevant words on responding to actions. If this asymmetric effect indicates that the automatic tendency to imitate is stronger than the tendency to obey verbal commands, rather than an effect of nonspecific features of the stimuli or stimulus-response mapping, then it should also be present in the Manual-Visual group, but not in the Vocal-Auditory or Vocal-Visual groups. 8 Actions speak louder than words Method Participants Forty-eight right-handed volunteers (15 men, mean age: 22. Â ±7. 5 years) were randomly assigned to one of four groups: Manual-Auditory, Vocal-Auditory, Manual-Visual and Vocal-Visual. All had normal or corrected-to-normal vision and normal hearing. The experiment was carried out with local ethical approval and written consent. Stimuli and Apparatus Warning and imperative stimuli were compounds of hand action s and words with coincidental onsets. Hand actions were life-sized images of postures made by a male right hand, taken from the angle at which one normally views one’s own hand, and presented on a laptop computer screen (60Hz, 400mm, 96DPI) in color on a black background. For the warning stimulus, the hand was in a neutral posture, with the fingers closed and pointing upwards in parallel with the thumb (visual angle: 6. 96Â ° x 13. 33Â °), and was shown for a variable duration between 800ms and 1520ms. For the imperative stimuli, the hand was in an opened (15. 5Â ° x 13. 5Â °), closed (7. 0Â ° x 11. 2Â °) or inverted neutral posture (see Figure 1D for examples), and was shown for 640ms. Word stimuli were either sound files presented via the laptop’s internal speaker (auditory) or superimposed in white 9 Actions speak louder than words nk on the hand stimuli in the centre of the screen (visual; 6. 5Â ° to 7. 1Â ° x 2. 6Â ° to 3. 1Â °). For the warning stimulus, the nonword clepo was presented for 650ms (auditory) or between 800 and 1520ms (visual). For the imperative stimuli, the word ‘open’, ‘close’ or the nonword pocle (see Figure 1C for examples) were presented for 640ms (visual) or between 600ms and 640ms (auditory). The nonwords clepo (warning stimulus) and pocle (neutral stimulus) were phonotactic amalgams of phonemes contained in the two words ‘open’ and ‘close’. Pocle contained the same syllables as clepo, presented in reverse order. For the manual response groups, response onset of opening and closing hand movements was measured by recording the electromyogram (EMG) from the first dorsal interosseus muscle of the right hand (see Heyes et al. , 2005). For the vocal response groups, onset of voice responses was measured via a free-standing electret microphone (Vivanco EM 32, Vivanco-direct. com). The RT interval began with the onset of the imperative stimulus, and ended with EMG onset (manual responses) or the activation of the microphone (vocal responses). Design and Procedure Participants sat at a viewing distance of approximately 700mm from the stimulus presentation screen. For the manual response groups, the participant’s right forearm lay in a horizontal position across his/her body, supported from elbow to wrist by an armrest. The wrist was rotated so that the fingers moved 10 Actions speak louder than words upwards during opening responses, and downwards when closing. Thus, the plane of response movement (up-down) was orthogonal to the plane of action stimulus movement (left-right), controlling for any effects of left-right spatial compatibility. After making each response, participants returned their hand to the neutral starting position; their fingers closed and parallel to the thumb. Each trial began with the presentation of the warning stimulus. After a variable duration it was replaced by the imperative stimulus. Participants were instructed to respond to the imperative stimulus as quickly as possible, without making errors, by opening or closing their hand (manual response groups) or by saying ‘open’ or ‘close’ (vocal response groups) as soon as they saw an open or closed hand posture (action-relevant task), or heard or saw the word ‘open’ or ‘close’ (word-relevant task). They were instructed to ignore the irrelevant dimension. After the presentation of the imperative stimulus, the screen went black for 3000ms before the next trial. Four action-relevant and four word-relevant task blocks of 60 trials were presented in alternating order, counterbalanced between participants. Relevant and irrelevant stimulus compounds were compatible (e. g. an open hand accompanied by the word ‘open’), incompatible (e. g. an open hand accompanied by the word ‘close’) or neutral (e. . an open hand accompanied by the nonword pocle). The six trial types, defined by compatibility (compatible, neutral or 11 Actions speak louder than words incompatible) and relevant stimulus (open or close), were equiprobable and randomly intermixed within each block. Results Mean RTs are plotted as a function of task and compatibility in Figures 1AD. Incorrect responses and RTs less than 100ms or greater than 1500ms were removed (3. 1%). Figure 1 about here As predicted, in the focal Manual-Auditory group (A) the impact of irrelevant actions on responding to words was greater than the impact of irrelevant words on responding to actions; there was an asymmetry favoring actions over words. This asymmetry was not observed in the Vocal-Auditory group (B), who responded to exactly the same stimuli using vocal responses rather than hand actions, suggesting that the asymmetry was not due to greater salience of the action than of the word stimuli. The asymmetry favoring actions over words was present in 12 Actions speak louder than words the Manual-Visual group (C), who saw rather than heard the word stimuli, indicating that it did not depend on faster processing of visual than auditory stimuli. Providing further confirmation that this asymmetry was not due to nonspecific factors, the Vocal–Visual group (D) showed the reverse asymmetry; irrelevant actions had a lesser effect on responding to words than did irrelevant words on responding to actions. These impressions were confirmed by an initial ANOVA, in which task (action-relevant, word-relevant) and compatibility (compatible, neutral, incompatible) were within-subject factors, and response mode (manual, vocal) and word modality (auditory, visual) were between-subject factors, and by subsequent analyses in which a 23 ANOVA (task x compatibility) was applied to the RT data from each group separately. The initial analysis indicated a significant three-way interaction (task x compatibility x response mode: F(2, 94) = 35. , p lt; . 001), and a nonsignificant four-way interaction (task x compatibility x response mode x word modality: F(2, 94) = 1. 1, p = . 341). The separate analysis of the data from the focal Manual-Auditory group yielded a significant interaction between task and compatibility (F(2, 22) = 20. 8, p lt; . 001), confirming that there was an asymmetry favoring actions over words. This interaction was also significant in the Manual-Visual group (F(2, 22) = 25. 5, p lt ; . 001), but it was 13 Actions speak louder than words bsent in the Vocal-Auditory group (F(2, 22) = 1. 5, p = . 252), and reversed in the Vocal-Visual group (F(2, 22) = 5. 5, p = . 017). In the two groups where there was an asymmetry favoring actions over words, mean RT in the action-relevant task was shorter than in the word-relevant task (Manual-Auditory: F(1, 11) = 48. 7, p lt; . 001; Manual-Visual: F(1, 11) = 172. 3, p lt; . 001). To check whether the action-dominant asymmetry was dependent on this main effect of task on RT, the data from these groups were subjected to bin analyses. For each group, RTs of each participant in each task were divided into five bins of equal size (Ratcliff, 1979). Three quintiles were selected in which, within group, mean RT on neutral trials was approximately equal in action-relevant and word-relevant tasks. The data from these quintiles were subjected to 2x3x3 ANOVAs (task x compatibility x bin). These analyses showed that, in each group, although there was no main effect of task on RT (Manual-Auditory: F lt; 1; Manual-Visual: F(1, 11) = 1. 1, p = . 16), there was a significant task x compatibility interaction (Manual-Auditory: F(2, 22) = 11. 8, p lt; . 001; Manual-Visual: F(2, 22) = 11. 9, p = . 001). Thus, the action-dominant asymmetry observed in the Manual-Auditory and Manual-Visual groups did not depend on faster responding in the action task than in the word task. 14 Actions speak louder than words Discussion Previous research has shown that healthy adult humans have a pervasive and automatic tendency to imitate the actions of others, but this is the first study to provide a stringent test of the strength of this tendency. Using hand actions in a Stroop procedure, the power of actions to elicit imitative responses was compared with the strength of our tendency to obey verbal commands. The results from the focal group, who made manual responses to simultaneously presented actions and spoken words, showed that the impact of irrelevant actions on responding to words was greater than the impact of irrelevant words on imitative responding to actions. The same asymmetry was observed when written, rather than spoken, words were presented, indicating that it was not due to faster processing in the visual modality. The same asymmetry was not observed when participants made vocal, rather than imitative, responses, indicating that the action-dominant asymmetry was not due to greater salience or discriminability of the action images than of the verbal stimuli. Therefore, these findings suggest that the human tendency to imitate is stronger than the tendency to obey verbal commands. Previous studies have indicated that irrelevant actions influence the control of movements made in response to color, spatial and symbolic cues (Sturmer et al. , 2000; Bertenthal et al. 2006; Brass et al. , 2000). The present findings show for 15 Actions speak louder than words the first time that automatic imitation effects occur, not only when the imperative stimuli bear an arbitrary or purely spatial relationship with responses, but also when they are verbal commands; that is, when the relationship between the imperative stimulus and the response is both specific and overlearned. Langton, O’Malley, Bruce (199 6, Experiment 5) used a Stroop procedure to compare the power of actions and words, but they did not examine imitative responding. Instead, they required participants to make vocal responses to directional gestures (a person pointing up, down, left and right) and to their verbal equivalents, and found symmetrical compatibility effects; irrelevant gestures affected vocal responses to words to the same extent as irrelevant words affected vocal responses to gestures. We found the same symmetrical pattern in our Vocal-Auditory group, when participants were making nonimitative responses, but a contrasting pattern, indicating action dominance, when participants were making imitative responses. Thus, comparison of the two studies i) confirms that action dominance is specific to imitation, and ii) indicates that, in the case of nonimitative vocal responding, actions and words have comparable impact both when the action stimuli are pointing gestures and when they are opening and closing hand movements. 16 Actions speak louder than words In a variant of the game ‘Simon says’, played at teatime in Victorian England, children were required to grip the tablecloth when an adult, gripping or releasing the cloth, said ‘Hold tight! ’, and to release the cloth, regardless of the adult’s action, when he said ‘Let go! . Presumably, amusement derived from the fact that, like the participants in the present experiment, children could not resist the influence of automatic imitation, and were therefore compelled flagrantly to disobey the authority of verbal command. However, the results of the present study do not merely vindicate the disobedient behav ior of Victorian children. They show that automatic imitation is much more than a parlour game, or a device that experimental psychologists can use to investigate the processes involved in stimulus-response translation. These findings show that automatic imitation is not only pervasive but also powerful. Even among healthy, typicallydeveloping adults, it is more powerful than the tendency to obey verbal commands. In this context, actions do indeed speak louder than words. 17 Actions speak louder than words References Bertenthal, B. I. , Longo, M. R. , Kosobud, A. (2006). Imitative response tendencies following observation of intransitive actions. Journal of Experimental Psychology: Human Perception and Performance, 32, 210–225. Brass, M. , Bekkering, H. , Wohlschlager, A. , Prinz, W. 2000). Compatibility between observed and executed finger movements: comparing symbolic, spatial, and imitative cues. Brain and Cognition, 44, 124-43. Buccino, G. , Binkofski, F. , Fink, G. R. , Fadiga, L. , Fogassi, L. , Gallese, V. , Seitz, R. J. , Zilles, K. , Rizzolatti, G. , Freund, H. J. (2001). Action observation activates premotor and parietal areas in a somatotopic manner: an fMRI study. European Jour nal of Neuroscience, 13, 400-404. Charman, T. , Baron-Cohen, S. (1994). Another look at imitation in autism. Development and Psychopathology, 6, 403-413. Darwin, C. (1989). Voyage of the Beagle. London: Penguin Books. 18 Actions speak louder than words Heyes, C. M. , Ray, E. D. (2000). What is the significance of imitation in animals? Advances in the Study of Behavior, 29, 215–245. Heyes, C. M. , Bird, G. , Johnson, H. , Haggard, P. (2005). Experience modulates automatic imitation. Cognitive Brain Research, 22, 233-240. Kilner, J. M. , Paulignan, Y. , Blakemore, S. J. (2003). An interference effect of observed biological movement on action. Current Biology, 13, 522–525. Lakin, J. L. , Chartrand, T. L. (2003). Using nonconscious behavioral mimicry to create affiliation and rapport. Psychological Science, 14, 334-339. Langton, S. R. H. , OMalley, C. , Bruce, V. (1996). Actions speak louder than words: Symmetrical cross-modal interference effects in the processing of verbal and gestural information. Journal of Experimental Psychology: Human Perception and Performance, 22, 1357–1375. Lhermitte, F. , Pillon, B. , Serdaru, N. (1986). Human autonomy and the frontal lobes. Part I: Imitation and utilization behavior: a neuropsychological study of 75 patients. Annals of Neurology, 19, 326-334. 19 Actions speak louder than words Meltzoff, A. N. Moore, M. K. (1997). Explaining facial imitation: A theoretical model. Early Development and Parenting, 6, 179-192. Ratcliff, R. (1979). Group reaction time distributions and an analysis of distribution statistics. Psychological Bulletin, 86, 446–461. Simpson, A. Riggs, K. J. (2007). Under what conditions do young children have difficulty inhibiting manual actions? Developmental Psychology, 43, 417-428. Strafella, A. P. Paus, T. (2000). Modulation of cortical excitability during action observation: a transcranial magnetic stimulation study. Neuroreport, 11, 22892292. Sturmer, B. , Aschersleben, G. , Prinz, W. (2000). Correspondence effects with manual gestures and postures: a study of imitation. Journal of Experimental Psychology: Human Perception Performance, 26, 1746-1759. Tagliabue, M. , Zorzi, M. , Umilta, C. , Bassignani, F. (2000). The role of longterm-memory and short-term-memory links in the Simon effect. Journal of Experimental Psychology: Human Perception Performance, 26, 648-670. 20 Actions speak louder than words Thorndike, E. L. (1898). Animal Intelligence: An Experimental Study of the Associative Processes in Animals (Psychological Review, Monograph Supplements, No. 8). New York: Macmillan. Wallbott, H. G. (1991). Recognition of emotion from facial expression via imitation? Some indirect evidence for an old theory. British Journal of Social Psychology, 30, 207-219. 21 Actions speak louder than words Author note AB is now at Faculte de Psychologie et des Sciences de lEducation, Universite Catholique de Louvain, Louvain-la-Neuve, Belgium. 22 Actions speak louder than words Figure caption Figure 1. RTs in compatible, neutral and incompatible trials for word-relevant (solid line) and action-relevant (broken line) task conditions. Results are presented separately for the four different participant groups: (A) ManualAuditory, (B) Vocal-Auditory, (C) Manual-Visual and (D) Vocal-Visual. Vertical bars indicate standard error of the mean. Images show compatible, neutral and incompatible stimulus compounds in action-relevant (Panel C) and word-relevant (Panel D) task conditions for the visual word modality groups (C and D). For the auditory word modality groups (A and B), words were spoken. 23

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Compare Leni Riefenstahl's Triumph of the Will with Humphrey Jennings' Essay

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The meaning of word forgetfulness in works of Bill Collins - Essay Example This is very much the case in Billy Collins pointed â€Å"forgetfulness†. As a means of identifying the subject and theme of this point, discussing the logical development of ideas, analyzing the language, and measuring the degree of imagery metaphors and symbolism, it is the hope of this author that this brief analysis will be able to shed a particular level of light upon direct and indirect meaning that Collins necessarily sought to integrate with the reader. Firstly, with regards the subject in one, this is quite busy stated within its title, â€Å"forgetfulness†. Rather than discussing such a topic in a nuanced and ultimately nonlinear way, the author delves directly into the subject matter and forces the reader to realize that no matter what countermeasures that might take, they too are ultimately doomed to follow the same universal path of losing one’s memories, the ability to recollect, and ultimately the means by which ones reality is defined. As such, th e logical development on takes begins by discussing the way in which certain memories are lost. This of course proceeds within the constructs of discussing how additional memory with respect to activities of varying importance is also lost as an individual grows and develops. The logical and linear way in which this is presented begins by discussing the way in which the young adult first begins to lose sight an understanding of the importance of quadratic equations learned in high school. However, the logical progression that this takes in his with the individual getting up late into the night seeking to look up curious aspects of dates facts and figures that should have otherwise been remembered. Although it is not expressly referenced, the reader can gain the understanding of the fact that, due to the universal nature of the elements of forgetfulness, as well is the way in which the poet describes it, the author and the reality which defines his own life is equally effective. One of the most effective ways in which the subject matter integrates with reader is with respect to the way in which simplistic and Standard English is utilized. One of the reasons why this might have been done with regards to the fact the entire point is related with regards to how the punches might speak to the individual to convince them of the fact that their memory and ability to recall is ultimately failing. Within such a context, it would be no need for elevated language as conversation within the inner self would necessarily be some plastic and straightforward. Similarly, symbolism and imagery are heavily utilized throughout one as a means of presenting the reader with the understanding that old age and forget not only give but are also unavoidable. Says the poet, â€Å"as if, one by one, the memories you used to harbor/decided to retire to the southern hemisphere of the brain/to a little fishing village where there are no  phones† (Collins 1). Furthermore, the poet st ates concerning memories, â€Å"It has floated away down a dark mythological river/whose name begins with an L as far as you can recall/well on your own way to oblivion where you will join those/who have even forgotten how to swim and how to ride a bicycle† (Collins 1). By utilizing such imagery and symbolism, the author is able to paint a vivid picture of the way in which old age is related to retirement; and how forgetfulness and old age are irrevocably linked to the decline and death that awaits everyone. Though no formal rhyming mechanism was utilized, appointment nonetheless held a level of integrity due to the fact that it observed the justifiable structure. With regards to personal thoughts and takeaways, it is the understanding of this student that the particular point in question had the

Should Students Be Graded on Attendance Essay Example for Free

Should Students Be Graded on Attendance Essay Should a student be graded on his or her attendance in class? No, a student should not be graded on their attendance in class. A student should be graded on their work that they do in class not the fact they are sometimes not in attendance. A student should not be graded on their class attendance for many reasons. One of those main reasons could be a continuous illness. A student with a continuous illness has no choice but to miss days out of class. For example a student with diabetes has to go to doctors appointments to have their glucose level checked. This student can quickly get sick and need medical attention, which will cause them to miss class. Would you rather have a student in your class sick and not learn anything or would you have them miss class and seek medical attention. A student that misses class often can possibly pass that class. It all depends on the grade that they have. Yes missing class sets the student back and causes him or her to spend time making up the work that they have missed, but that does not mean they are going to fail. If this student is passing that class they can afford to miss one class every often. It is when they start to miss too many classes that you should start to deduct points from their grade. A student with a passing grade and does his or her work should not be graded on their attendance because you never know what the circumstances of their absence might be. Often time’s college students feel that since they are paying for school they have the right to miss class. True students are paying for class but that does not give them the right to miss class. Yes you are paying for your education and you should be able to miss class whenever you would like too. It’s the student and their parent’s money and they should be able to waste it however they want. Some students feel that they pay a teacher to come to class everyday and that if that teacher misses days out of class then they have the right to miss class. In some cases this statement is true. It’s their money and they feel as though they have the right to miss class since they are paying for it. Students should not be graded on their classroom attendance. A student can have a good average and if they miss class and get a grade for not being present it could lower their grade. Students sometimes do not miss class intentionally, events just happen that cause them to miss class. Although a student pays for their education it does not give them the right to miss class at any time. Students are in school to get an education and should attend class everyday.

U.S. Health Care System Essay Example for Free

U.S. Health Care System Essay Health care system in the United States is on an unsustainable way and in need of transformation. Even if, it has both private and public insurers like in other countries but the uniqueness of this system is dominant of the private component. The United States spends more on health care than any other nation but the nation is less healthy than the average population in other developed countries. Additionally, many people stay uninsured and do not have access to health care. There is a need for a deep change in the system of health care (Chua, 2006). This paper will identify and evaluate three forces that have affected the development of the health care system in the United States of America. Than, it will speculate whether or not these forces will continue to affect the health care system in the U.S. over the next decade including additional force impacting the health care system of the nation. Finally, it will evaluate the importance of technology in health care. Three Forces That Have Affected the Development of the Health Care System in the United States of America. The development of health care system in the U.S. has been affected by many different forces such social, economy, behavioral, political and technological issues. A very important factor affecting health care system is economy. The economy aspect in health care includes employment, health care cover and costs that allow people to have financial access to healthcare. In such an unstable economy as we have faced recently some employers drop or restrict coverage or prevent eligibility of its employees to continue coverage. Even more, they have a tendency to reduce costs of health care insurance by readjusting the benefits offered or sharing in the cost. Those with low income or those who lost their jobs are left uninsured. Moreover, employer-sponsored healthcare coverage has changed and some employees are no longer offering health care insurance coverage as a benefit. This will continue to be an issue in the health care system if the economy remains in recession (American Medical Association, 2005). In March 2010 the Affordable Care Act (ACA) was signed and supposed to increase quality and affordability of health insurance while reducing costs of health care for individuals and government but still is difficult to estimate if this act is going to bring real changes in health care field (Cembranelli, 2012). Another force affecting health care system in America is a social factor that interacts with the economy. The size and composition of population has a great influence on health services. Since the rate of births is higher than the number of deaths; the population has grown remarkably. Also, the constantly increasing number of immigrants affects the current population of the country. According to the data from by the census bureau, the aging population is healthier and lives longer then previous generations. Their way of live is more beneficial to health; they have more active lifestyles, social activities and cosmetic medicines. Such tendency impacts the health care system. The biomedical advances enhance longevity that leads to longer periods of economic and social dependency, while improving the quality of life. The aging population intensifies a burden on the younger workers and  will result to impact social policies, taxes, politics and life in general. In the same way, fertility, abortion trends, mortality trends affecting life expectancy, infant and maternal mortality impact the development of health care (Wiliams Torrens, 2010). Additional aspects influencing the development of health care systems in the U.S are behavioral factors. Many advances have been made in the field of disease preventions, treatments and lifestyle patterns. The rise of the AIDS woke up individuals to the fact that infectious diseases are still challenging. Controlling infectious disease has become a significant public health issue and is associated with an improvement in living conditions. Challenges in mortality are currently focused on chronic diseases and awareness to fight new outbreaks of infectious diseases play a major part. Threats of biological weapons in war terror, exposure to violence, vehicular accidents, and use of alcohol, drugs and tobacco products as well as infectious agents have an impact on behavior. Sexual behaviors have an impact on the widespread of sexually transmitted diseases resulting an increase in infertility, cancer and other complications. Moreover, intensified stress in daily life, workplace violence, issues in marriage, domestic abuse and many other problems brings breakdowns and deterioration of human immune system and affects morbidity and mortality that are linked to behavior and social interaction. The failure of the society to address social, behavioral and economics causes of disease will continue to affect the development of the healthcare system (Williams Torrens, 2010). How the Forces Will Affect the Health Care System in the United States of America Over the Next Decade, Including Additional Force-Medical Technology. All of the forces that affect the health care in the U.S. will continue over the next decade especially that there is a failure in addressing them. There is a chance that situation may even worsen and new challenges can arise. Even if, improvements of technology constantly increase efficiency, the cost of new tests and treatments will be greater than the savings based on mentioned previously economic, social and behavior factors. Health care will keep getting better in diagnosis and treating diseases lengthening patients  lives and at the same time increasing the number of people requiring care (Adams, Archbold, Munib, New, 2007). The U.S. health care system is dysfunctional and can no longer continue as it currently operates. With or without Affordable Care Act (ACA), there is a need for a deep change. The United States spends more money on health care because a nation is less healthy on the average than the rest of the developed world. The system is dysfunctional and ACA is fast-tracking the process of changes that will be faced by the economic and business challenges by health care organizations. The required adjustments to healthcare organizations operating budgets and methodologies for delivering medicine may become a big issue. Health care organizations will have to go from volume-based reimbursement in medicine based on the number of procedures done or patients seen to a value-based system that will give the same money for every patient regardless of the procedure performed. Health care organizations may have lower income since they will treat more patients. They may face cost-pressure factors such as the overall cost of medical care and the increased incidence of chronic disease, cost transparency and reference pricing, increased government role in paying for care, increased coverage and limited highly skilled medical workforce There is a prediction that forty million more people will be covered nationally, at reimbursement rates below the cost of providing that care (Adams et al., 2007). Among the economic, social and behavioral forces impacting development of the health care system is medical technology that brings a great change in the health care but it raises costs of health care. It impacts economy, organizations, industry as well as patients, insurance beneficiaries and social and governmental policy. Medical technology increases cost in health care on one hand but on the other hand improves diagnosing and treatment. Use of current medical technology allows health care organizations to develop new products and services and this way increase standards of offered services. As new technologies are developed, they bring new ethical and regulatory issues. Issues in technological advances will bring more challenges and affect the development of the health care services bringing  it into the new century (Etheredge, Jones, Lewin, 1996). The Importance of Technology in Health Care. Technology today plays an important role in health care because it improves quality of care. According to Williams and Torrens (2010), technology is the driving force of health care. It helps in the storing and organization of patient records or information and gives access to doctors to medical records. Use of technology in health care allows better and faster diagnosis and treatments. The technology is very beneficial in overcoming communication barriers in health care. It has an impact in so many areas in the healthcare world such as economic, clinical, organization, and industrial impact as well as on patients and insurance beneficiaries, social, government and policy impact. It is a hope for a long, productive life for millions of people but it has to be properly implemented by trained individuals. Health care organizations must ensure that they hire the proper staff capable to implement it while providing security and protection of patients data. Proper implementation of technology allows capturing, track, record and recognizing illnesses quickly and treating them effectively. Technology lets people and communities to stay healthy by providing them access whenever it is needed. Moreover, it brings opportunities to wellness and will also be used to stabilize physiology, modify risky behaviors, design and field snap clinical trials advancing biomedical knowledge and care for individuals with health care challenges. Despite of all benefits that technology brings to health care, today some express a concern that innovation is being stifled, capital is unavailable for technology acquisition, and reimbursement is inadequate (Graham, Estrin, Horvitz, Kohane, Mynatt, 2011). Conclusion Health care system in the United States is struggling with high cost while trying to improve quality and increasing access for the health services. There are social, economy, behavioral, political and technological factors that affect development in health care system in the country. An important  role in this development plays technology that improves quality and efficiency of diagnosis and treatment on one hand but on the other hand increases significantly costs of health care. There is a deep need to transform the health care system by improving the experience of care and the health of populations at the same time reducing costs of health care. REFERENCES Adams, J., Archbold, B. L., Munib, E. L., New, D. (2007). _Healthcare 2015 and U.S. health plan. New roles, new competencies_. Retrieved January 21, 2014, from http://www.healthleadersmedia.com American Medical Association (2005). Socioeconomic Status in Health Reaserch. _The Journal of the American Medical Association, 294_(22), . doi:10.1001/jama.294..22.2879. Cembranelli, F. (). _What are the six forces that affect innovation in healthcare?_ Retrieved January 20, 2014, from http://empreendersaude.com Chua, K. P. (2006, February). _Overview of the U.S. Health Care System_. Retrieved January 20, 2014, from http://amsa.org/AMSA/Libraries/Committee_Docs/HealthCareasystemOvervi ew.sflb.ashx Etheredge, L., Jones, S. B., Lewin, L. (1996). What is driwving health system change? _Health Affairs, 4_, 93-104. doi:10.1377/hlthaff.15.4.93 Graham, S., Estrin, D., Horvitz, E., Kohane, I., Mynatt, E. (2011). _Information Technology Research Chalanges for Healthcare: From Discovery to Delivery_. Retrieved n.d., from http://www.cra.org/ccc/national-priorities/healthcare Wiliams, S. J., Torrens, P. R. (2010). _Introduction to Health Services_ (7  ed.). Mason: Cengage Learning.

FTIR spectroscopy of SO2

FTIR spectroscopy of SO2 Abstract In this lab, the IR spectrum of SO2 gas was taken. The spectrum was then used to determine which peaks corresponded to the vibrational modes of SO2 ­. Once the modes had been determined, the experimental wavenumbers of the v1 and v3 modes and the overtones were used to determine the anharmonicity of the two different modes. While there was a difference between the two modes anharmonicity, overall there was not a significant difference. The modes and their corresponding wavenumbers were also used to calculate the force constants of SO2. The experimental data produced a force constant k1 with 3.112% error while the kÃŽ ´/l2 constant had a 2.963% error. Introductions IR spectroscopy is the detection of a transmittance or absorption intensity of change as a function of frequency1. In recent years, Fourier transform spectrometers replaced the traditional dispersive spectrometer because they are faster and more sensitive. They have made it possible to analyze many areas which were not possible with the dispersive spectrophotometer. The difference is the simultaneous examination of all frequencies. The three basic spectrometer components in a FT system are the radiation source, interferometer and detector. The radiation source in precision FTIR instruments is often water-cooled in give it more power and stability2. Figure 1. shows a diagram of the interferometer and the schematics of the spectrophotometer as a whole. The interferometer has the following three components: a moving mirror, fixed mirror, and a beamsplitter.. The beamsplitter is a semireflecting geranium thin film of small particles deposited on flat KBr substrate. Radiation from the broadband IR source is focused into the interferometer, and hits the beamsplitter. Once the beam hits the beam splitter, half of it is transmitted to the fixed mirror while the other half is transmitted to the moving mirror. The changing position of the moving mirror relative to the fixed one generates an interference pattern and causes the two beams to oscillate in and out of phase. When the beams are in phase, there is a constructive interference resulting in the maximum detector response. However, when the beam is out of phase, there is a deconstructive interference between the two beams. Once they have been reflected from both mirrors, they recombi ne at the beam splitter. The recombined beam passes through the sample and then focuses on the detector2. The intensity of the radiation hitting the detector will vary in a sinusoidal manner while the mirror is moving at constant velocity. The record of the interference signal is the interferogram and is a time domain spectrum. The detectors response changes versus time within the mirror scan are recorded. When a sample absorbs at a certain frequency, the amplitude of the sinusoidal wave reduces proportionally to the amount of sample in the beam. In an IR spectrophotometer, this process happens in three component frequencies, which creates a more complex interferogram2. To convert these interferogram recordings to the IR spectrum, a Fourier transformation is used. Small, precise intervals are used during the mirror scan. The rate of the sampling behavior is controlled by a monochromatic beam produced by a helium neon laser focused on a separate detector2. For this analysis, the mid IR spectrophotometer utilized a KBr beamsplitter and a mercury cadmium telluride (MCT) detector. MCT detectors are photon detector with a dependence on the quantum nature of radiation. They also exhibit very fast responses. They must be at a constant temperature of 77^(o)K, the temperature of liquid nitrogen. It is faster and more sensitive than the alternative detector, the deuterated triglycine sulfate (DTGS) 2, which was used for the far IR analysis. The cell used to hold the SO2 gas can be seen in Figure 2. A molecules energy can be split into three components: the electrons motion, the constituent atoms vibrations and the whole rotation of the molecule. While electronic transitions happen on a short timescale, rotational transitions happen on a longer time scale. When a molecule is placed in an electromagnetic field, such as light, energy from the light is transferred from the field to the molecule. This happens upon the satisfaction of Bohrs frequency condition: ΔE = hv When a molecule is excited from one state to another, the energy difference between the two states is absorbed by the molecule. When the molecule reverts back to the previous state, the change in energy which was absorbed upon excitation is then emitted1*. A molecule will be excited by photons which possess the appropriate energy3. Vibrational transitions are observed in the infrared (IR) spectra which are about the 103 ~ 104 cm-1 region. These transitions are caused by the vibration of the nuclei constituting the molecule. The rotational transitions occur at 1-103 cm-1 region, the microwave region, while the electronic transitions occur at 104-106 cm-1 region, the UV-visible region. As the vibrational quantum number v increases, the rotational intervals tend to decrease. The vibrational fine structure of electronic transitions can give insight to the structural and bonding information about molecules which are electronically excited1*. A system displaced from its equilibrium force will be restored due to a restoring force provided by the elasticity of the system. However, there is a property of inertia which causes the system to over correct for the displacement. The back and forth actions of elasticity and inertia cause the system to have oscillatory motion4. When the potential energy is graphed versus the internuclear separation, a perfect harmonic oscillator forms a parabola. The energy spacing in a harmonic oscillator does not change throughout the well of the parabola and is equal to hω where ω=km12 and the zero point energy is Eo= 12hω When a system is not a perfect harmonic oscillator, it is considered anharmonic. Anharmonicity forces the right side of the parabola to widen and asymptotically approach zero. The spaces between the permitted states are not evenly spaced as they were in the harmonic system5. The comparison of the two graphs can be seen if Figure 3. One of the possible ways to calculate xe, a term which shows the anharmonicity of a system is to graph ?G/? versus (?+1). This yields a graph with an equation as follows ΔGv=v+ 1xeve+ ve By dividing the xeve term by ve, the xe term is found. The larger this number, the more anharmonic the system is and vise versa5. Covalent bonds of molecules are not rigid as ball and stick models would suggest, but rather they can be compared to stiff springs which are capable of stretching and bending. More energy is required to stretch and compress a bond than it does to bend it. There is a direct relationship between the energy or frequency which characterizes the stretching vibration of a bond and the bond dissociation energy3. The major factors which are influencial in the stretching frequency of a covalent bond can be seen in the following equation: v = 12rck(m1+m2)m1+m2 where v is the frequency, k is the force constant, c is the speed of light, and m1 and m2 are the masses of the two atoms on each end of the bond. This equation corresponds to the rigidness of the oscillation. However, it should be noted that not all molecular vibrations are capable of being observed in the infrared region. In order to be seen in an IR spectrum, a vibration must cause a change in the dipole of a molecule. This change in charge distribution allows the molecule to absorb infrared light. There is a proportional relationship between the change in charge distribution and the absorption: the greater the change, the stronger the absorption3. All vibrating physical objects have a set of normal modes6. A normal mode can be defined as a simple harmonic oscillation which occurs about an area which is local and low in energy. The normal modes are determined by the systems structure R and its energy function V(R ). Any motion can be expressed as a superposition of normal modes when a pure harmonic V(R ) is being considered. However, the near minimum potential can still be approximated by a harmonic potential for an anharmonic V(R ). Also, small-amplitude motions can still be described by the sum of normal modes. This means that all systems behave harmonically at low temperatures7. For SO2, it is necessary to have nine Cartesian coordinates in order to determine the positions of all three nuclei. Therefore, the molecule is considered to have nine nuclear degrees of freedom. The first three are necessary to describe the position of the center of mass of the molecule. If these three degrees change, it represents the translational movement of the molecule in space. The next three degrees of freedom refer to the orientation of the molecule. These three degrees can be described as the angles of the molecule. If these three degrees change, then the molecule has rotated. The three remaining coordinates are those used to describe the relative positions of the three atoms. These are called vibrational coordinates8. To describe the vibrations of a bent trigonal molecule, it makes sense to use the valence coordinates. The valence coordinates consist of the two bond lengths and the bond angle. However, they do possess a drawback. If energy is put into a bond so that it stretches, to observe how the molecule reacts is difficult due to the energy put into the stretched bond quickly flowing into the vibrations of the other bond in the molecule. Because of this, it is said that the stretching of a single bond and other vibrational motions are coupled8. By varying the coordinates, which are the linear combinations of changes in the bond lengths and bond angles, a good uncoupled approximation can be made. These coordinates are called the normal coordinates. Motions which take place in these coordinates are appropriately called normal modes of vibration. The center of mass does not move in these coordinates8. A non symmetric molecule with N number of atoms will have 3N-6 normal modes. This means SO2 will have 3(3)-6 = 3 normal modes. The normal modes for SO2 can be seen in Figure 3. The symmetric stretch is labeled as v1, the bend is labeled v2, and the asymmetric stretch is labeled v3. When a molecule is exhibiting one of the vibrational modes, it travels the path indicated by the arrow, stops, and then returns back to its starting position8. It is possibly to express the three normal modes as a potential-energy function written in terms of bond stretching and angle bending as shown in the following equation: V = 12k1(R1-Re)2+ 12k1(R1-Re)2+ 12kb(ÃŽ ¸-ÃŽ ¸e)2 where R1 and R2 are the first and second bond length of S-O, Re is the equilibrium S-O bond length, ? is the bond angle of O-S-O, and ?e is the equilibrium value. The constants ks and kb ­ are for the stretching and bending respectively9 ­. Though the derivations are difficult, it was found that the following equations are derived from eq. (1) and are used to calculate both constants: 4r2v32 = 1+2momssin2ÃŽ ±k1mo 16r4v12v22 = 21+2momssin2k1moÃŽ ±kÃŽ ´l2 4r2v12+v22 = 1+2momscos2ÃŽ ±k1mo+2mo1+2momssin2ÃŽ ±kÃŽ ´l2 where v# is the wavenumber of that particular mode, 4?3 is expressed as 5. 8918E-5 in order to obtain units of Nm-1, mo is the mass of oxygen, ms is the mass of sulfur, ? is 59.75^(o), and k?/l2 is the same as the kb constant used in equation (6)10. Diatomic molecules possess only one vibrational coordinate which is quantized. This means that only specific results will be obtained for the value of the vibration. The quantum mechanical harmonic oscillator upon first approximation gives the allowed levels of a diatomic molecule. Polyatomic molecules are similar. Each normal mode has quantized energy, and can be approximated by the harmonic oscillator model when at low energy levels. The frequencies associated with bending tend to be lower than the frequencies associated with stretching10. It is possible to see normal modes via IR spectroscopy if they have a change in dipole in the molecule when it stretches or bends10. All of the normal modes in SO2 are IR active and therefore can all be seen in the IR spectrum at the fundamental frequency. It is possible to observe other weak bands in the spectrum which are a result of overtones. Overtones occur because anharmonicities. They usually happen at integer multiples of 2 or 3 of the fundamental frequencies and are caused by two modes being simultaneously excited10. These bands are located at frequencies which are approximately the sum or difference of the two modes which were excited and are weak10. Method About 1.5g of drierite was weighed out and placed in the barrel of a syringe and the plunger was inserted almost entirely into the barrel. A 3 cm piece of rubber tubing was attached to the tip of the syringe. A 1.5 g of sodium hydrogen sulfite was measured and placed in a vial cap that was small enough to fit into the syringe barrel. The filled vial cap was then into the syringe using a bent spatula to prevent the sodium hydrogen sulfite from spilling into the barrel. The plunger was pushed into the syringe as far as it would go. To ensure that none of the sodium hydrogen sulfite was spilled, the syringe was placed tip down in a beaker. The next step was placing 15 mL of 6 M HCl into a small beaker. All of the acid was then drawn into the syringe containing the vial cap very carefully as to not let any of the acid mix with the sodium hydrogen sulfite. The plastic lid was then screwed onto the syringe. Once the cap was secure on the tip, the syringe was shaken so that the acid and the sodium hydrogen sulfite mixed. As SO2 gas was being produced, the plunger on the syringe was pulled out simultaneously. The high pressure of the gas in the syringe caused the cap on the tip to leak so it was necessary to apply pressure to the tip to prevent it from spitting acid out. Once the reaction had stopped producing gas, the syringe was inverted so that the tip was pointing up and the liquid was at the bottom of the barrel. The cap was removed and the tip was connected to the other end of the rubber tubing attached to the syringe containing drierite. At this point the syringe containing drierite was above the syringe containing the SO2 gas. As the plunger in the bottom syringe was being pushed in, the plunger in the top syringe was being pulled out; making sure no liquid was pushed through the tubing and into the top syringe. The top syringe, now containing the SO2 gas, was capped and allowed to sit for five minutes in order for the drierite to dry the SO2 gas. The excess HCl in the reaction syringe was expelled into a waste beaker. 15 mL of NaOH was placed in a beaker and then drawn up into the syringe in order to destroy any remaining SO2. The NaOH was then also expelled into the waste beaker. After the syringe containing the gas had sat for five minutes, the IR gas cell was placed in the hood. The syringe containing the SO2 was then attached connected to the gas cell using another piece of rubber tubing. Both stopcocks on the gas cell were opened and the gas was pushed into the cell. Both stopcocks were then immediately closed to prevent any of the SO2 from leaking out. A spectrum in the range of 700-2500 cm-1 was obtained using an FTIR spectrophotometer. In order to get a good spectrum from the mid IR range, the cell was undiluted. However, to obtain a good spectrum in the far IR range, it was necessary to dilute the gas cell. Once the spectrum had been obtained, the gas cell was placed inside a fume hood. Both stopcocks were opened up and a syringe was used to flush air through the gas cell. The gas cell was then placed in a vacuum sealed dessicator with the stopcocks open in order to dry out any moisture that may have entered the cell during the experiment. Results The IR spectra of SO2 can be seen in Figure 5. By looking at what wavenumbers the peaks appeared at, it could be concluded which peak corresponded to each vibrational mode of SO2. The bending of a molecule happens at lower wavenumbers, so it was concluded that graph in the top right corner corresponds to the ?2 vibration. It was known from literature that the stretches occur somewhere between 1000 and 1500 cm-1 so the graph in the bottom right must correspond to the overtones of SO2s ?3 and ?1 modes. It is known that asymmetric stretches always correspond to higher wavenumbers. So it was concluded that the next two peaks on the spectrum were ?1 and ?3 respectively. The actual experimental wavelengths of each mode can be seen it Table 1. There are two overtones present, one from the ?1 mode and another from the ?3 mode. The lower frequency overtone corresponds to the lower-frequency mode. Thus the lowest overtone is that of ?1 while the second seen overtone comes from the ?2 mode. Using the experimental wavenumbers for each mode, both constants could be found using eq. (7) first to solve for k1. This values was calculated to be 1000.858 Nm-1. The litereature value is 1033 Nm-1 and the percent error in the experimental value was 3.112% The calculated value of k1 was then used in eq. (8) to find the k?/l3 constant. The second constant was calculated to be 78.60 Nm-1. Literature value for this constant is 81 Nm-1 and the percent error in the experimental calculation was 2.963%. To evaluate the effectiveness of this method for finding the constants, both sides of eq. (9) were solved for. The left side equaled 93.77 Nm-1 while the right side equaled 95.54 Nm-1. The percent difference between these two values is 1.85%. In order to determine the harmonicity of each of the modes of vibration, the ve and vexe values were calculated. This was done by graphing ?G/v versus (v + 1) in Microsoft Excel. The ?G corresponds to the wavenumber of the overtone seen on the IR spectrum. ?G was then divided by v. The overtones corresponded to v=2 while the normal mode bands corresponded to ?=1. Graphs for both the ?1 mode and ?2 mode can be seen in Figure 6. Excel was then used to fit a trend line and produce a y = mx + b equation for the data. The slope of the equation was vexe and the intercept was ve. To determine the anharmonicity of the two modes, it was necessary to solve for xe. This was done using eq (4). The calculated values for xe in the ?1 mode was 1.0612 and for the ?3 mode was 0.07891. This means that the ?1 mode is more anharmonic than the ?3 mode. Conclusion For this lab, SO2 ­ was prepared and then studied via FTIR spectroscopy. The three modes of SO2 were identified on the IR spectra obtained. It was determined that the lowest energy of bending correlated to the lowest frequency peak. The second highest frequency peak was determined to be ?1 since the symmetric stretch is lower in energy than the asymmetric stretch (?3) which is the third highest frequency peak. The wavelengths determined from the IR spectra were used to calculate the constants k1 and k?/l3. It was determined from the numbers crunched from eq. (6) that the used method of determining the constants was an accurate method. Also, the anharmonicity of the modes ?1 and ?2 were calculated and compared. The graph of ?G/vversus (v + 1) produce an equation of y = mx + b which provided the values of xeve and v ­e. These values were then used to find xe, which described the anharmonicity of each mode. The ?1 mode was found to be more anharmonic due to its greater xe value whil e the ?3 was found to be more harmonic. Refrences What is Infrared Spectroscopy?. (n.d.). Mount Holyoke College, South Hadley, Massachusetts. Retrieved December 11, 2009, from http://www.mtholyoke.edu/~mlyount/MySites/ForensicSpectroscopy/WhatIsIR.html Nakamoto, Kazuo.Infrared and Raman Spectra of Inorganic and Coordination Compounds. Sixth Edition ed. Hoboken, NJ: Wiley Sons, Inc., 2009. Print. Hsu, S. (n.d.). Infrared Spectroscopy. prenhall.com. Retrieved December 6, 2009, from www.prenhall.com/settle/chapters/ch15.pdf Chem.msu.edu. (n.d.). Nature of Vibrational Spectroscopy. Retrieved November 30, 2009, from 2http://www.cem.msu.edu/~reusch/VirtualText/Spectrpy/InfraRed/irspec1.htm#ir1 The Simple Harmonic Oscillator. (n.d.). PAWS Personal Accessible Web Space Kettering University. Retrieved December 12, 2009, from http://paws.kettering.edu/~drussell/Demos/SHO/mass.html Atkins, P., Friedman, R., Paula, J. D. (2008). Rotational and Vibrational Spectra. Quanta, Matter and Change: A Molecular Appraoch to Physical Change (pp. 315-318). New York: W. H. Freeman. Normal mode Wikipedia, the free encyclopedia. (n.d.). Wikipedia, the free encyclopedia. Retrieved December 11, 2009, from http://en.wikipedia.org/wiki/Normal_mode Normal Mode (Harmonic) Analysis. (n.d.). Center for Molecular Modeling. Retrieved December 11, 2009, from http://cmm.cit.nih.gov/intro_simulation/node26.html Vibrational Spectroscopy. (n.d.). med.upenn.edu. Retrieved December 10, 2009, from www.med.upenn.edu/bmbgrad/Faculty/Master_List/Vanderkooi/course_notes/8.vibrational.pdf Sulfer Dioxide Vibration. (n.d.). d.umn.edu. Retrieved November 30, 2009, from www.d.umn.edu/~psiders/courses/chem4644/labinstructions/SO2spartan.pdf Infrared Spectroscopy of SO2. (n.d.). Spectroscopy and Structure Chem 4591. Retrieved November 30, 2009, from 3http://www.colorado.edu/chemistry/chem4581_91/SO2.pdf