Case study: Facial Recognition

Case study: Facial Recognition Facial Recognition is the process where the brain recognizes, understands and interprets the human face (Face Recognition, n.d.). The face is essential for the identification of others and expresses significant social information. The face reveals significant social information, like intention, attentiveness, and communication. Goldstein (1983) (as cited in Chung Thomson, 1995) stated that, The face is the most important visual stimulus in our lives probably from the first few hours after birth, definitely after the first few weeks. The loss of the ability to recognize faces, like those who have prosopagnosia, greatly affects the individuals life. The primary focus of this review is to provide an overview of the development of facial recognition, gender and age differences, facial identity and expression, memory, prosopagnosia, and hemispheric advantages in facial recognition. It is also my intention to review past and contemporary theories of development and understanding of facial recognition. The Birth of Facial Recognition The human face has sparked interest in various disciplines within the arts and sciences for centuries (Darwin, 1872 as cited in Nelson, 2001). This fascination of the human face may reflect the psychological significance of the face and the recognition of other faces. Cognitive psychologists, neuroscientists and developmental psychologists are interested in facial recognition due to evidence that faces are somehow perceived differently than other patterned objects, the ability is controlled by a distinct neural circuit, and that faces provide an early means of communication between infants and caretakers. Regardless of the wide-ranged and continued interest in the subject matter, it still remains unclear how facial recognition becomes specialized, and what neurological systems are involved in the development process (Nelson, 2001). The number of research with faces used as stimuli has increased dramatically over the past decades (Chung Thomson, 1995). This may be a result of a change in the cognitive studies from fragmented verbal materials to more meaningful nonverbal memory. It is also noteworthy that the majority of the research on facial recognition has been focused on infants and adults, giving little attention to the developmental changes during childhood (two through five years of age). Studies of Development Studies in Newborns In the early stages of facial recognition (1960s) there were contrasting results as to whether newborns had any preference towards faces over other patterned stimuli. Over the next few decades of research, the view that newborns are capable of recognizing faces and discriminating between their mothers and unfamiliar faces was supported by researchers (Nelson, 2001). Although the findings that newborns can distinguish between faces and may show preferences, evidence for ability to recognize faces earlier than 1 to 2 months of age is extremely weak and not regularly supported. Newborns possess poor visual acuity, contrast sensitivity, and cannot determine the high spatial frequencies that make up the fine details of faces (de Schonen and Mathivet, 1990; Simion et al., 1998 as cited in Nelson, 2001 ). Another criticism of newborn studies is that they have used schematized stimuli (having eye sockets and opening for a mouth and nose used as a model of a real face), questioning the validi ty of the stimuli used to serve as a real face. In more current literature by Gava, Valenza, Turati and de Schonen (2008), they found evidence that newborns may have the ability to detect and recognize partially occluded faces. They believe their findings highlight the importance the eyes play in newborns facial detection and recognition. Newborns detected faces even if some low-information portions were missing from the face. The only exception was the eyes-once the eyes were removed, detection and recognition of the stimuli was impaired. This is found in both newborns and adults. The findings of the study were in line with Morton and Johnsons structural hypothesis (Gava, Valenza, Turati and de Schonen, 2008) that states, faces are special for newborns because human infants possess a device that contains structural information concerning the visual characteristics of conspecifics-hiding the eyes implies that the typical face pattern (three high contrast blobs in the correct positions of the eyes and the mouth) would be disrupted. There are two hypotheses offered by Gava, Valenza, Turati and de Schonen (2008) explaining how newborns recognize the difference between the non-obstructed and obstructed faces. The first hypothesis states, Newborns might have filled in the partly hidden surface, thus perceiving the obstructed stimulus as connected behind the obstructers, or might have simply perceived only what is immediately visible of the obstructed face. The second hypothesis suggests that newborns might have perceived the similarities between the non-obstructed and the obstructed face, perceiving only what is immediately visible of the obstructed face. The results found do not explain the perceptual operations of the ability of the newborns to detect and recognize occluded faces. Nonetheless, it demonstrates that the degree of salience highly affects the competence of the obstructed information. Both past and present literature shows a difference in opinions when it comes to newborns and facial recognition. In recent literature the main consensus is that newborns can certainly recognize faces, but the perceptual operations of the newborns ability to detect and recognize are still yet unknown. Studies in Infants In 1972, Fagan (as cited in Nelson, 2001) demonstrated that infants around 4 months old have excellent recognition of upright faces in comparison to upside down faces. This finding suggests that infants around the age of 4 months have developed a face schema and view faces as a special class of stimuli (Nelson, 2001). Infants between the ages of 3 to 7 months can identify their mothers from strangers and recognize faces by gender and facial expression. These findings demonstrate the development over the first 6 months in facial recognition, where infants not only identify but also discriminate faces. Carlsson, Lagercrantz, Olson, Printz Bartocci (2008) measured the cortical response in the right fronto-temporal and right occipital areas of healthy 6 to 9 month old children by showing an image of their mothers faces compared to that of an unknown face. A double-channel NIRS (near infrared spectroscopy) device monitored concentration changes of oxygenated hemoglobin and deoxygenated hemoglobin. The mother was asked not to talk to their children during the trials. The children were exposed to four types of visual stimuli: a grey background, a photograph of the mother, a second grey background and a photo of the unknown female face. Eight children (Group A) were presented with a picture of their mother before that of the unknown female face. In Group B, 11 children were presented in the reversed order. Each stimulus lasted a period of 15 seconds. The results showed that Group A (the mother image first) elicited an increase in the right fronto-temporal area, which is statistical different from responses to the unknown image. In Group B, (the unknown females face first) there was an insignificant increase in cortical response in the right fronto-temporal area when shown the unknown female and then spiked when the maternal facial image was presented. The findings in this study show that there was a greater increase in the right fronto-temporal region when the picture of the mother was shown in comparison with the unknown female photo. The effect of this hemoglobin change is most likely due to a discriminatory and recognition process. In addition to the right fronto-temporal region they also illuminated the right occipitotemporal pathway, part of the right prefrontal cortex, the right medial temporal lobe and the right fusiform area. These have been identified as specific target areas involved in face recognition. By looking at the mothers, the facial image is suspected to be an accurate result of the activation in the right occipitotemporal pathway. Difficulties in face recognition among infants born prematurely may be caused by a change or delay in the development of this pathway. The results show that the connectivity between the occipital cortex and the right prefrontal area are present and functional at the age of 6 to 9 months. These findings are extremely valuable to understanding the developmental mechanisms in infant social adaptation. Studies in Children It is highly likely that as we age, ones level of accuracy for facial recognition increases, but the evidence for the underlying processes of age differences is less certain. One of the techniques used was showing inversed pictures of faces to both adults and children. It was found that inversion disproportionately impairs the recognition of faces more so than other objects (Tanaka, Kay, Grinnell, Stansfield Szechter, 1998). Evidence by Carey and Diamond (1977) revealed that children at the ages of 8 and 10 years recognized a face with better accuracy if it was in the upright position in comparison to inverted position, like adults. However, children at age 6 recognized the inverted faces equally as well as the upright faces. These findings led to the hypothesis that children at the age 6 use a featural encoding strategy for processing faces. This is called the encoding switch hypothesis, where children 6 and under encode upright faces according to features such as the nose, mouth a nd eyes, and around the age of about 8 to 10 years, they begin to process faces holistically. In a second experiment when testing their encoding hypothesis, Carey and Diamond (1977) found that 6 year olds were misled more by changes in clothing, hairstyle, eyeglasses and facial expressions than 8 and 10 year olds. These results suggest that children at younger ages process faces according to their parts until they are about the age of 10, where they switch to a holistic approach. Carey and Diamond received criticism by a researcher named Flin, who believed their results were due the level of difficulty used in the task for 6 year olds and that their poor performance might have obscured the possible inversion effects. Flin (1985) (as cited in Tanaka, Kay, Grinnell, Stansfield Szechter, 1998) found that the 6 year olds recognition was below the older age group as an overall. He argued that there is little evidence to support the encoding switch hypothesis when taking age related performance differences into account. In more recent research, Tanaka, Kay, Grinnell, Stansfield Szechter (1998) stated that although face inversions may reveal performance difference, they provide little insight into the cognitive operations attributable to these differences. Tanka reasoned that if upright faces are encoded holistically, the whole-face test item should serve as a better retrieval cue than isolated-part test items, and if inverted faces are encoded only in terms of their parts, there should be no difference in the isolated part and whole face test conditions. Over a series of three experiments, their findings failed to support Carey and Diamonds (1977) predictions of the encoding switch hypothesis. If young children rely on featural information to encode faces, one would expect differences in their parts and whole performances than older children, which were not found. Their results suggest that by the age of 6 years old, children use a holistic approach to facial recognition and that the holistic appro ach remains relatively stable from ages 6 to 10. Recent research by Baenninger (1994) and Carey Diamond (1994) (as cited in Tanaka, Kay, Grinnell, Stansfield Szechter, 1998) also supports the idea that children do not encode faces based on features and then switch to a more configural encoding strategy, but instead encode normal faces holistically from the beginning. In fact, Carey and Diamond (1994) suggest that the Age X Inversion interaction may be attributed to a norm-based coding scheme (relational properties of the face that is encoded relative to the norm face in the population), which may explain experimental factors in changing the absolute levels of holistic processing. The norm-based coding model predicts that as one ages, facial recognition improves, whereas facial recognition should remain constant. The inversion task used by Carey and Diamond (1977, 1994) eliminated capability advantages by blocking norm-based encoding of relational properties, which could attribute to the lack of evidence for the holistic model. Th e single process that configural and featural information are encoded together supports the holistic approach to face recognition (Tanaka, Kay, Grinnell, Stansfield Szechter, 1998). Prosopagnosia A large amount of facial recognition research comes from the assessment of patients with prosopagnosia. Prosopagnosia is [a] visual agnosias that is largely restricted to a face recognition, but leaves intact recognition of personal identity from other identifying cues, such as voices and names (Calder Young, 2005). Regardless of who they are looking at, face recognition can be severely impaired. Patients typically recognize people by paraphernalia (voice or distinct features, such as a mole). Patients often cannot distinguish men from women, but hair length is a good retrieval cue for recognition. Areas related to prosopagnosia have been found the left frontal lobe, bilateral occipital lobes, bilateral parieto-occipital regions, and in the parieto-temporo-occipital junction (Ellis, 1975). It is possible to have several areas of damage for the specific function, but most occur in the right hemisphere. Gloning et al. (1970) (as cited in Ellis, 1975) found it is common for patients to exhibit symptoms of other agnosias. Such as foods looking the same, difficulty identifying animals, and inability to locate themselves in space and time. Some other, typically uncommon defects include visual field defects, constructional apraxia, dyspraxia for dressing, and metamorphosia (Ellis, 1975). The symptoms attributed with identifying faces are described as overall blurring, difficulties in interpreting shades and forms, and the inability to infer emotions in the face. Gloning et al. (1966) (as cited in Ellis, 1975) reports some patients have the most difficulty with the eye regions and others found the eyes the easiest to recognize. Regardless of the symptoms, an interesting aspect of prosopagnosia is that patients can always detect a face, but are unable to recognize it. This suggests that there is a two-part process in facial recognition. First, faces are detected, and then undergo further analysis where information such as age and sex are analyzed and compared in long-term memory. In comparing left posterior hemisphere to the right posterior hemisphere, Yin (1970) (as cited in Ellis, 1975) found that those with damage on the right side were poorer at face memory tasks than those with left side damage. They found that visual categories may all be difficult to recognize because they all have a high degree of inter-item similarity. De Renzi Spinnler (1966) (as cited in Young, 2001) found similar evidence, showing that patients with right-hemisphere damage were worse at recognizing faces, and other abstract figures than those with left hemisphere damage. These significant findings led them to believe that those with right-hemisphere damage are limited in high level integration of visual data. It also led to the hypothesis that prosopagnosia patients have lost the ability to recognize the individual members of categories with items of similar appearance (Young, 2001). The finding of covert recognition (Bauer, 1984 as cited in Ellis, Lewis, Moselhy Young, 2000) helped the cases of prosopagnosia as a domain-specific impairment of facial memory, showing parallels to priming effects. Bauer tested his patient LF by measuring his skin conductance while he viewed a familiar face and listened to a list of five names. Skin conductance was shown to be greater when the name belonged to the face LF was looking at. However, when asked to choose the correct name of the face, LF was unable to do so. These results showed a significant difference between the inability to overtly identify the face and the higher levels of skin conductance in the covert recognition. Bauer believed that there were two routes in the recognition of faces that both began in the visual cortex and ends in the limbic system, but each taking a different pathway (Bauer, 1984 as cited in Ellis, Lewis, Moselhy Young, 2000). Although Bauers neurological hypothesis was dismissed shortly after, his psychological hypothesis of a separation between overt recognition and orienting responses has been generally accepted (Ellis, Lewis, Moselhy Young, 2000). Models of Facial Recognition Bruce Young Functional Model Bruce and Young (1986) have proposed a functional model suggesting that the structural codes for faces are stored in memory and then connected with the identity and name of the matching face. The model mainly supports how individuals recognize familiar faces. This is one of the better models for face recognition. Their model is outlined in a box and arrow format, where face recognition is completed in stages. In the first stage, structural encoding, individuals encode visual information from a face into information that can be used by the other stages of the face recognition system. Within the structural encoding are two separate processes, view-centred description, and expression-independent descriptions. These two are in a serial position where expression-independent descriptions take input information from the view-centred descriptions process. These allow for identification of facial features when viewed from various angles. The next few stages are part of a series of parallel processes after the structural encoding stage. The expression analysis stage takes its input from the view-centred descriptions processes, allowing facial expression to be analyzed. The next stage is facial speech analysis. The last branch is directed visual processing, which targets more general facial processing such as distinguishing between faces. These sets of parallel processes take input from both structural encoding processes. All of these four links of parallel face processing feed into the general cognitive system, where all are bidirectional links receiving some input back from the cognitive system (Bruce Young, 1986). The last three stages of Bruce and Youngs (1986) model are the recognition, identification and naming stages. The recognition stage involves face recognition units, also known as FRUs. They are individual nodes associated with familiar faces. When facial features are detected, nodes are activated and fed into the FRU system. Whichever node reaches the threshold activation level is the one that corresponds to the face being observed, and is then recognized. The face recognition units interact with person identity nodes, also known as PINs. PINs and FRUs bidirectionally share input information, with a two-way interaction. Activation of the PIN for a person can create some activation in the FRU, allowing recognition time for the face to be faster. Last is the name generation process. Both the PINs and name retrieval interact with the cognitive system. However, only the PINs have a two-way interaction, whereas name retrieval process solely sends input information to the cognitive system. IAC Model Burton, Bruce and Johnstons (1990) adaptation of McClellands Interactive Activation and Competition model of concept learning is an extremely basic form of a connectionist model, consisting from pools of simple processing units. The goal of the model is to explain repetitive priming, associative priming, distinctiveness and face naming. All of the units within a pool inhibit each other. There are excitatory links connecting individual units across different pools, where activation passes between these links (all links are bidirectional). Each FRU is paired to a known face and any form of recognition will activate the appropriate FRU. The second level of classification occurs at the Person Identity Nodes (PIN), where one unit is paired to each known person. Familiarity is signaled when any PIN reaches a common activation threshold. This implies that there is one decision mechanism used for all person familiarity judgments, regardless if they are faces or other kinds of information. The third level of classification is the pool labeled Semantic Information Units (SIUs), where information about known individuals are coded in the form of a link between the persons PIN and SIU. The fourth level of classification is a pool of units labeled lexical output, which capture the first stage of processes involved in speech and other output modalities. The fifth and final stage is a pool of units labeled WRUs (Word Recognition Units), where code names link directly to a pool of Name Recognition Units (NRUs). Finally, all Word Recognition Units are connected directly to the lexical output units, in which the model contains the elements of a dual route model of reading. The IAC Model is different from the Functional model because FRUs signal face familiarity, pins are modality-free gateways to semantic information, and that the details and spread of activity are more clarified. This model has had success in simulating phenomena such as relative timing of familiarity, repetition, semantic and cross modal semantic priming. Both the Bruce Young (1986) and Burton, Bruce and Johnston (1990) models show how activation levels are used in recognition processes. These two models help us theorize exactly what is happening in the mind as we analyze and recognize facial features and faces as a whole. The main idea of the model is the idea that facial identity and expression are recognized by functionally and neurologically independent systems. These models have started great advances in the research of facial recognition. Memory Load on Facial Recognition Memory in facial recognition has had limited research, which is surprising considering its importance to understanding facial recognition and how it could impact research. Goldstein and Chance (1981) (as cited in Lamont, Williams Podd, 2005) found two critical variables that have received little attention when reviewing laboratory settings: memory load and delay. Memory load is defined as the number of faces shown in the study phase and delay is defined as the delay between study and recognition phase. Researchers have found that increasing age is associated with a decline in facial recognition ability. However, the variables interacting with age are still unknown. Nevertheless, mixed evidence on the question of whether face age has any impact on elderly participants is still debated. Evidence by Shapiro Penrod (1986) (as cited in Lamont, Williams Podd, 2005) reveals that as memory load increases, face recognition performance decreases. Due to the limited research on the subject matter, Podd (1990) wanted to inquire about the possible effects that it has on the field of research for facial recognition. Podd tested subjects in small groups, where they were asked to look carefully at a series of faces that the subjects were asked to identify at a later time. Subject had to discriminate between faces that they had seen previously and those that had yet to be seen in the recognition phase. The results showed that an increase in both memory load and delay correlate to a decrease in recognition accuracy. Podd believes this could be contingent on the fact that increased memory load decreases accuracy by decreasing the portion of targets correctly identified, while delay decreases accuracy by increasing the likelihood that a distractor will be called a target. Depending on how similar the target is from the distractor, there will be fewer attributes to use to differentiate between the targets. In more current literature, Lamont, Williams Podd (2005) have tested both aging effects and memory load on face recognition. They looked at two interacting variables: the age of the target face and memory load. They were curious in finding out if memory load had a greater impact in the elderly than in younger individuals. Another variable they looked at was recognition load, the total number of target and distractor faces seen in the recognition phase. The main objective was to see if they could determine whether the effects of memory load could be teased out from recognition load. In the results they found that, as expected, older age was correlated with a decrease in accuracy of facial recognition. Surprisingly, older people had a decrease in accuracy for younger faces but not in older faces. The results of the study were not consistent with past research, which found that recognition accuracy in the younger groups was higher with younger faces than with older faces. The current study showed the exact opposite results. One possibility of these results is that with increasing age, features of the face fade more quickly. Also, with increasing retention intervals, there is more time for peoples memories of the target to fade, where the least salient feature fades the fastest (Podd, 1990). They believe that the elderly have fewer distinctive facial features available in memory to make the judgment, meaning an increase in judgment time. It is also noteworthy to say these findings are consistent with Podds earlier work, (1990) showing that increased memory load is associated with a reliable decrease in performance in recognition accuracy. The findings show that recognition load produced the decrease, which is independent of age. Another important finding is that recognition load is the true source of the association between increased memory load and decreased face recognition. Lamont, Williams Podd (2005) state that, [f]ew studies dealing with memory load have taken account of this potential confound, and our results challenges the interpretation of all such research. Crook Larrabee (1992) (as cited in Lamont, Williams Podd, 2005) suggest that the present studies implications are of considerable value to future research, since some authors do not report age of their target faces. Therefore, the results are crucial for proper interpretation of facial recognition research. Sex Differences Hemispheric Advantages in Facial Processing Extensive research has been completed on facial recognitions hemispheric advantages. Unfortunately, little has been concluded due to contradicting evidence. Patterson and Bradshaw (1975) (as cited in Turkewitz Ross, 1984) found that when drawings of faces varied by only one feature, participants showed an advantage in the left hemisphere; however, when all features varied, there was an advantage in the right hemisphere. Prior studies have shown that advantages in both hemispheres are contingent on the conditions being used, which produces different results. Even when the conditions are held constant, conflicting results emerge, resulting in individuals showing both right and left hemisphere advantages. Ross and Turkewitz (1981) (as cited in Turkewitz and Ross, 1984) found hemispheric advantages were associated with the nature of the information process strategy being used by the participant. Those with a right-hemisphere advantage showed signs of decline when inversion of faces was being tested, whereas those with left hemisphere advantages showed a decline while omission of selected facial features were tested. They suggest that these results show that those with a right-hemisphere advantage recognize faces based on gestalt qualities (whole) and those with left hemisphere recognize faces based on a more individual and distinctive features. Turkewitz and Ross (1984) were interested in researching age-related changes in hemispheric advantages in recognition of presented faces and determining whether a dual-mode of right hemisphere processing exists and if it associates with differences of age and gender. The participants were students ages 8, 11 and 13 years old. Participants were seated in a chair in front of a screen, where facial stimuli were presented. The objective was to point to the face presented in the response sheet for each trial. The data found suggest that there are age- and gender-related differences in the nature of hemispheric advantages shown when confronted with the task of identifying unfamiliar faces. The findings also support the hypothesis of processing stages, where different hemispheric advantages are associated with the stages. Both adults and older girls exhibited a right-hemisphere advantage, suggesting an age-related shift, responding to the undifferentiated and global characteristics of the faces. Younger girls showed no advantage which suggests they use right and left hemisphere strategies equally well. This suggests that girls are using more advanced and integrated right hemisphere modes of functioning, which tends to be more effective when engaging in facial recognition. Everhart, Shucard, Quatrin Shucard (2001) tested 35 prepubertal children in facial recognition and facial affect processing. They were trying to find similar results to those found in the previous literature stating that males show higher levels of activation in the right hemisphere, where females tend to show higher levels in the left. They were also looking to see if this change developed before puberty, similar to those of adults, and to see if gender-related differences would be present in cortical processing during the performance of face recognition. Auditory probes were used to gather ERPs during a Facial Recognition Memory task. They used a facial identification task to gather data on matching and recognition of facial affect, reaction time and accuracy. Their results showed that boys show greater levels of ERP amplitude in the right hemisphere, where girls showed greater levels of activation in the left hemisphere. The findings also showed that boys might process faces at a global level, which is in the right hemisphere, and girls might process faces at a more local level, in the left hemisphere. This study states that its findings have potential clinical implications. Due to the finding that boys use more resources in their right hemisphere and girls use more in their left, then sex related differences will be evident following lesions to the right hemisphere, suggesting that males may be more at risk to have prosopagnosia. Conclusion Facial recognition has interested humans for centuries. Although all evidence out there on the subject matter is useful and important, I selected the findings I believe to be the most important. Based on the research in the development of facial recognition we can conclude that, humans, from newborn age through adulthood, can identify faces. By the age of 6 months, people can discriminate between faces. It has also been found that children do not encode faces based on features and then switch to a more configural model, but rather encode faces on a more holistic level. Other aspects looked at were prosopagnosia and different models of face recognition. Some of the most important research on facial recognition comes from comparing prosopagnosia patients to normal adults. The last two topics examined in this review were memory load and hemispheric advantages. Both help us understand where we process facial information and also how our memory works to store faces. The location of facial recognition has been narrowed down to specific areas of the brain and pathways, further research must be done to get a better idea

HIV and Aids :: Medical Health Medicine Essays

HIV and Aids In Junior High, when we were in sex education class, we were told about AIDS and HIV. We learned that being HIV (Human Immunodeficiency Virus) positive eventually led to AIDS (Acquired Immune Deficiency Syndrome), which eventually led to death. We were taught this and never really doubted it. The AIDS pandemic is global and an estimated 40 million people are infected. None of them have been cured. The amount of funding for AIDS research is not small. A plentiful amount of drugs are available to patients diagnosed with AIDS or HIV. Some AIDS patients take "cocktails" of pills, which often lead to serious physical side effects. Some "cocktails" can mean ingesting 25 pills a day. There has been much talk about finding an AIDS Vaccine, but there have been no definite results as of yet. She created a stir in the media when she appeared on ABC News 20/20(1). Her person She has been called an unfit mother, a heretic, and has been compared to those who believe the Holocaust never happened. The reason for such a stir is because she is HIV positive, doesn"t take any medications whatsoever, questions whether HIV causes AIDS, has published a book called What if Everything You Thought You Knew About AIDS Was Wrong?, has unprotected sex with her husband, has an untested 3 year old son who she breast-fed at birth (the virus can be transmitted in utero, during birth, or through breast feeding), and is pregnant with her second child. Her name is Christine Maggiore and she as well as other dissidents have aroused both anger and support from AIDS and HIV communities. The difference between being HIV positive and having AIDS is that having AIDS means that a person must be HIV positive and either have a T-cell count below 200 or have one of the CDC"s (Center for Disease Control) 28 opportunistic infections. Christine Maggiore started questioning the connection between HIV and AIDS and the HIV and AIDS testing process when certain things she was told about AIDS and HIV did not add up with her situation. She speaks about how she "started really thinking about what AIDS doctors and educators told me rather than just accepting everything as true and correct." Doctors had told her that from her T cell count, she had a recent new infection.

marketing case Essays -- essays research papers

Introduction:   Ã‚  Ã‚  Ã‚  Ã‚  Pfizer Inc. is a research-based diversified health care company with operations around the globe. Pfizer Inc. has three main business groups. They include the Consumer Health Care Group, U.S. Pharmaceuticals Group, and the Pfizer Animal Health Products Segment. For purposes of this case, we will discuss the Animal Health Products Group, where in 1998, accounted for twelve percent of the company’s revenues. Industry Background: The process for making beef begins with the ranchers breeding and raising cattle, in order to sell them to feedlots. The ranchers’ goals are to minimize death of the cattle, to breed low birth weight calves, to produce grade A choice beef, and lastly to produce calves that gain weight quickly. By the time the feedlots purchase the cattle, the more the cattle weights, the better. The next step in the process after the feedlots purchase the cattle is for the feedlots to sell the beef to the meatpackers. There are four main meatpacker companies that account for eighty percent of the entire industry. The meatpackers act as a middleman between the producer and the consumer. Since the majority of this industry is controlled by a few companies, this creates a problem because they act similar to a monopoly. Due to this monopolistic view, there is no free-flow of information throughout the supply chain and beef prices tend to be higher than they should. After the meatpackers have packe d the beef, they sell it to retail stores, which in turn sell the meat to us, the consumer. Industry Trends: There are a variety of trends that directly influence the beef industry. To begin, changes in consumer lifestyles include less time for home-cooked meals and society’s increased pressure for time; thereby, having a big impact on the decline of consumption of beef. In addition, consumers have increased dietary considerations for health and nutritional issues that lead them to consume alternative meat products like pork and poultry. Furthermore, the marketing strategies of the pork and poultry industry have done a better job advertising than the beef industry. Also, the pork and poultry industry have recently produced more ready-to-eat and branded products. Even with all of this new increased pressure on the beef industry by the pork and poultry industries, retail prices for beef have still remained high, yet ano... ...less today than ever before, beef will always exist, therefore, Pfizer products will be needed. An added reason for them to continue with their cattle/calve health products is due to the fact that Pfizer has already invested heavily in this industry and makes over sixty health products for cattle. Additionally, we also recommend that Pfizer maintain their strong market share by continuing to sponsor seminars, publish educational material, offer technical support and organize management programs for the health care of cattle. Conclusion   Ã‚  Ã‚  Ã‚  Ã‚  To conclude, the beef industry is currently experiencing a decline in demand, thereby directly affecting products sold to ranchers made by Pfizer’s Animal Health Group. This decline can be attributed to a variety of factors outside of Pfizer’s control, including social, economical and governmental issues regarding beef. Since Pfizer is limited in what they can do to increase beef sales, our proposal is for Pfizer to enter into making health products for poultry, given that this industry seems to be on the rise. However, at the same time, Pfizer should continue to be active in the beef industry to keep them at the top.

Midterm Essay Essay

Briefly identify and explain the key differences and similarities regarding the UCR, NIBRS, and NCVS programs. The Uniformed Crime Reporting (UCR) Program displays crime data for the United States, as well as for states, cities, counties and colleges. This allows for a comparison among neighboring jurisdictions and among those with similar populations and other common characteristics. The National Crime Victimization Survey (NCVS) collects information on the frequency and of crimes such as rape, sexual assault, aggravated and simple assault, household burglary, theft, and motor vehicle theft. Both systems report different types of information and different details. The UCR program displays statistics for law enforcement administration, operation, and management. The UCR program utilizes what is called the hierarchy rule. If more than one crime was committed by the same person and the time separating the crimes was minor, then the crime highest in the hierarchy is the only crime reported. This seems like a very inaccurate method of recording data, one would assume that all records of offenses were taken into consideration for reporting purposes. The NCVS program collects information on crimes by individuals and households while also providing information on victims such as age, sex, race, marital status. The difference in the two programs is that each serves a different purpose in reporting. The UCR reports information for law enforcement, operations and management. The NCVS provides information about each crime, its victims and the offenders. Summarize the evolution of the criminal justice system in America. Identify and discuss at least three (3) key U.S Supreme Court cases that have had a significant impact on the issue of individual rights versus public order, with respect to arrest, search, and seizure. In modern day America, the public’s view on the typical criminal has shifted from seeing him or her as a victim of social and personal unfortunate circumstances to seeing him  or her as a dangerous predator who takes advantage of the rights and privileges of citizens (Schmalleger, 2014). An example of a Supreme Court case that had an impact on the issue of individual rights versus public order is McCullen v. Coakley. Individuals claimed that a â€Å"buffer zone† around an abortion clinic infringed upon their First Amendment rights to free speech by communication with patients less effective (Takeway). This relates to the possibility of an arrest if the protestors are blocking the entrance to an abortion clinic or physically harassing a patient. In 1995, the Supreme Court ruled that officers must knock and announce their identity before entering a dwelling even if they hold a search warrant (Schmalleger, 2014). In January 2012, the Supreme Court ruled that the FBI needed a warrant to attach a GPS device to s suspected drug dealer’s car. This ties into the search and seizure topics and preserves the individual rights of the suspected drug dealer. After all, the individual is just suspected of being a dealer, there is no hard evidence. In general, outline the police mission, operational strategies, styles and the legal and ethical aspects of policing today. The police officer mission consists of five components, enforcing the law, apprehending offenders, preventing crime, preserving the peace, and providing the community with needed enforcement related services. Law enforcement has a chain of command just like the military with three policing styles that vary by department and region. The watchman style attempts to achieve â€Å"order maintenance†. The legalistic style attempts to enforce the letter of the law. The service style attempts to meet the needs of the community and serve its members. In general, police officers are mandated to stay within the Fourth, Fifth and Sixth Amendments. All law enforcement officials regardless of status or rank should be held accountable for their actions however, this is not always the case. There are three methods that guide American policing. Strategic policing retains the goal of professional crime fighting but enlarges the target to include serial offenders, gangs and criminal associations. It makes use of technology, intelligence operations and undercover stings (Schmalleger, 2014). Problem solving policing assumes that crimes are caused by social conditions within the community and that they can be controlled by addressing social problems (Schmalleger, 2014).  Lastly, community policing supports the use of partnerships and problem solving techniques to address the issues that cause crime. (Schmalleger, 2014). Ethical issues that plague law enforcement vary. Racially biased policing in which police officers are viewed as biased for example, taking that a predominately African American neighborhood is full of criminals. The use of excessive and deadly force is another issue in which police officers either use too much force in the apprehension of a suspect or cause death or great bodily harm (Schmalleger, 2014). What is the dual-court system? Identify and explain the three levels of characteristic of the federal judiciary. The dual court system is the result of general agreement among the founding fathers about the need for individual states to retain significant legislative authority and judicial autonomy separate from federal control (Schmalleger, 2014). The three levels of characteristics of the federal judiciary are the district courts, the courts of appeal and the Supreme Court. The district courts are composed of 94 judicial districts . Federal district courts have jurisdiction over all cases involved alleged violations of federal statutes. The 94 judicial districts are organized into 12 regional circuits each with a court of appeals. The court of appeals hears appeals from district courts within its circuit (Schmalleger, 2014). These courts are also known as circuit courts. The U.S. Supreme Court is the top federal court system in the U.S. It is comprised of nine justices with eight being associates and the ninth being the chief justice (Schmalleger, 2014). The Supreme Courts’ decisions affect the United States by deciding what laws and lower court decisions are in line with the Constitution. Identify and describe the various pre-trial stages of criminal trial. There are various pre-trial stages in a criminal trial. It begins with an arrest when the person is taken into custody. The first appearance is when the defendant appears before a judge. The legality of his or her arrest is contemplated and the defendant is told what he or she is being charged with. The accused will either be kept incarcerated without bail or with bail, the latter being money paid by the arrested in exchange for release. The next stage is the pretrial release in which the accused person is released from custody before or during prosecution. However, there is a condition; the  accused person is required to appear in court when told to do so. Plea bargains are also negotiated. The defendant can agree to plea guilty to a lesser charge than the one he or she is being accused with. A lesser punishment may be in order if they are being accused with multiple offenses. A plea bargain is a debate or negotiation between the defense counsel, defendant and the prosecution. Normally criminal cases end at this stage in order to reduce time and money. References Schmalleger, F. (2014). Criminal Justice: a brief introduction, (10th ed) Upper Saddle River, NJ: Pearson/Prentice Hall. Takeaways From Supreme Court Rulings On Buffer Zones, Recess Picks. (2014). National Public Radio.

For those not familiar with this storyline Essay

For those not familiar with this storyline, Romeo + Juliet is just your average boy-meets-girl, boy-and-girl-fall-hopelessly-in-love, boy-kills-girls-cousin, girl-feigns-death, boy-and-girl-commit-suicide plot. Not one to watch with a box of chocolates and a boyfriend bonfire, but a box of tissues may well be needed. Director Baz Lehrmann chooses to set this epic in Mexico, a perfect modern backdrop for the violent gangland culture Shakespeare’s script conveys in a modern context. The two families-the Capulets and the Montegues- are beautifully contrasted; the lighthearted Montegues in open Hawaiian shirts, against the tight black clad Capulet boys sporting many gold accessories. These two groups of arch nemeses are, however, united by their mutual habit of openly wearing guns with such flair and style they could easily pass as a fashion accessory, rather than an accessory to murder. In the prologue the role traditionally played by the chorus is adopted by a real life U. S anchorwoman. The prologue is so turned into a news bulletin. You are literally drawn in to the film as the shot slowly zooms in on the television showing the newsreader, before the shot hurtles down a metropolitan street, dragging the audience, with trailing stomachs, behind it. Lehrmann captivates his audience from the outset with a visually stunning repeat of his prologue, utilising imagery from the whole film and conveying the entire storyline in under a minute. Contrary to what you may think, this in fact draws the viewer into the film. The imagery used in the prologue directly links to and supports the words in the scripted opening, and translates them into the modern context. â€Å"Two houses, both alike in dignity† is represented by two giant skyscrapers either side of a road, one bearing a huge sign saying Capulet, the other Montague. As Romeo, Dicaprio shows the full depth of his acting ability. From lovelorn-â€Å"Did my heart love ’til now? † to murderous â€Å"Either thou or I or both must go with him† and back down again through all the levels of shock, anxiety, and of course suicidal. Clare Danes gives a beautiful portrayal of young innocent Juliet. Her facial expressions are convincing and manage to wordlessly express every feeling perfectly. Her lines are also delivered with huge compassion and emotion. Danes along with Dicaprio shows a huge variety in her performance, keeping a wide audience interested in a script labelled by many as â€Å"boring†. This is not the first time modern directors have messed around with the â€Å"star cross’d lovers†. Most notably Bernstein’s all singing all dancing West Side Story, but also China Girls and-more loosely- Romeo Must Die. However, this is the first modern adaptation to stick with Shakespeare’s script. Lehrmann has obviously had to make cuts in the text for the sake of the length of the film, but the dialogue he leaves in is fantastically effective. This spunked up version a timeless classic engrosses a viewer of any age from the outset, and keeps its grip almost complete through to hugely moving finale. Even staunch traditionalists must see that dragging this dusty play kicking and screaming in to a twentieth century riddled with guns, drugs, and rock n roll has revived it in a way no amount of Lawrence Olivier ever could.

Civil Action essays

Civil Action essays The legal system is an essential element in the successful operation of this country. It is a system that is utilized every day, by every type of person, from the average blue-collar worker to the average Wall Street broker. There is a multitude of ways that the legal system is put to use. One such way is the class action lawsuit. A Civil Action, by Jonathan Harr, uses the account of a single case, Anne Anderson, et al., v. W.R. Grace The purpose of class action lawsuits is to give the common man the ability to take on the largest corporate or private entities, who can afford the very best legal services, and have a chance of redressing the wrong done by these entities (Clark, sec. 1). Without class action lawsuits, ordinary citizens acting individually would not have the means to challenge corporate and governmental wrongdoers. A Civil Action provides an in depth account of the life of one class action suit. It explores the role of the lawyer in litigating situations, focusing on the critical factor of proving causality. It brings to light numerous pitfalls encountered by both the prosecution and defense. In addition to exposing the potential pitfalls that can occur in a class action lawsuit, A Civil Action also touches on the motivation behind these cases. A definite motivation must exist for all persons involved in a class action lawsuit, since the uncertainty, stress, and pitfalls that accompany this form of civil action are tremendous. A Civil Action did not attempt to sugarcoat the process of trying a case such as the Woburn case. The complication were numerous and often hard to overcome. For the plaintiffs, the biggest hurdle faced was proving causality. Nearly all other obstacles Schlichtmann and his staff encountered were directly related to the attempt to prove causality. In a civil case, as...

German Writers Every German Learner Should Know

German Writers Every German Learner Should Know What is it that your German teacher always says? If you can’t speak, then read, read and read! Reading will help you tremendously in improving your language skills. And once you are able to read some of the great writers of German literature, you will understand German thought and culture more in depth. In my opinion, reading a translated work never equals the original in the language it was written in. Here are a few German writers that have been translated in numerous languages and that have influenced people all over the world. Johann Christoph Friedrich von Schiller (1759-1805) Schiller was one of the most influential German poets of the Sturm und Drang era. He ranks high up in German people’s eyes, alongside with Goethe. There’s even a monument depicting them side by side in Weimar. Schiller was successful in his writing from his very first publication on - Die Ruber (The Robbers) was a play written while he was at a military academy and quickly became renowed thoughout Europe. Initially Schiller had first studied to become a pastor, then became a regimental doctor for a short period, before finally devoting himself to writing and teaching as a professor of history and philosophy at the University of Jena. Later moving to Weimar, he founded with Goethe Das Weimar Theater, a leading theatre company at the time. Schiller became part of a German Enlightment period, die Weimarer Klassik (the Weimar Classism), later on in his life, of which also famous writers such as Goethe, Herder and Wielandt were a part. They wrote and philosiphized about aesthetics and ethics, Schiller having penned an influential work entitled ÃÅ"ber die sthetische Erziehung des Menschen On the Aesthetic Education of Man. Beethoven famously set Schillers poem Ode to Joy in his ninth symphony.   Gnther Grass (1927) Gunter Grass is one of Germany’s most notable writers currently living, whose work has garnered him a Nobel Prize of Literature. His most renowned work is his Danzig Trilogy Die Blechtrommel (The Tindrum), Katz und Maus (Cat and Mouse), Hundejahre (Dog Years), as well as his most recent one Im Krebsgang (Crabwalk). Born in the Free City of Danzig Grass has worn many hats: he’s been also a sculptor, graphic artist and illustrator. Further, throughout his life, Grass has always been outspoken about European political affairs, receiving the2012 European of the Year award from the European Movement Denmark . In 2006 Grass has received much attention from the media involving his participation in the Waffen SS as a teenager. He has also recently voiced his disapproval of facebook and other social media, stating that â€Å"anybody who has 500 friends, has no friends.† Wilhelm Busch (1832-1908) Wilhelm Busch is known as a pioneer of the comic strip, due to his caricature drawings that accompanied his verse. Among his most popular works are Max and Moritz, a children’s classic that recount the mischievous pranks of the aforesaid boys, a ballad that is often read and dramatized in German schools.Most of Busch’s works are a satirical spin on practically everything in society! His works were often a parody of double standards. He poked fun at the ignorance of the poor, the snobbery of the rich, and in particular, the pomposity of clergymen. Busch was anti-Catholic and some of his works greatly reflected this . Scenes such as in Die fromme Helene, where it is hinted that the married Helene had an affair with a clergy man or the scene in Der Heilige Antonius von Padua where the catholic Saint Antonius is being seduced by the devil clad in ballet attire made these works by Busch both popular and offensive. Due to such and similar scenes, the book Der Heilige Antonius von Padua was banned from Austria until 1902. Heinrich Heine (1797-1856) Heinrich Heine was one of the most influential German poets in the 19th century that German authorities tried to suppress because of his radical political views. He is also known for his lyrical prose which was set to music of classical greats such as Schumann, Schubert and Mendelssohn in the form of Lieder form. Heinrich Heine, a jew by birth, was born in Dà ¼sseldorf, Germany and was known as Harry until he converted to Christianity when he was in his twenties. In his work, Heine often ridiculed sappy romanticism and over exuberant portrayals of nature. Though Heine loved his German roots, he often critiqued Germanys contrasting sense of nationalism.