Time Since Death Essay Example | Topics and Well Written Essays - 2000 words

Time Since Death - Essay Example Therefore, the estimation of the time since death is very essential, since it enables the investigators to narrow down their investigation to a given time frame, which makes it easier to investigate the circumstances that surround such deaths and the possible causes (Newberry, Lewis & Walters, 2004:936). Further, the accurate estimation of the time since death is also crucial for enabling the investigators to narrow down to a narrow range of suspects associated with the death, owing to the fact that, when the time since death is known, then it is easy to know the immediate individuals that were associated with the victim, as opposed to when the time since death is unknown (Payne-James, 2003:93). Therefore, this discussion seeks to analyze the various methods that may be used for the estimation of time since death, with a view to critically assessing the merits and demerits of each of these methods. First, the discussion will explain the different methods applicable in estimating the time since death. Secondly, the discussion will tackle the merits associated with each method. Thirdly, the discussion will present the demerits associated with each method. Finally, the discussion will be summed up by a conclusion, which will recap the important points of the discussion, state limitations associated with the discussion and raise the necessary questions, if any. There are various methods that can be applied to estimate the time of death of an individual, depending on the environment where the body is found, the evidence available and the nature of the cause of death (Szelecz, Fournier, Seppey, Amendt & Mitchell, 2014:671). The different methods that can be applied to estimate the time since death include: This is a method applied to estimate time since death, through the measurement of the core temperature of the body, relative to the temperature of the surrounding environment where the body is found, also referred to as the ambient temperature (Warther,

Cultural Dimensions Essay Example for Free

Cultural Dimensions Essay Culture is one of those terms that have no specific definition because of its diverse nature. It can be looked at from any point of view. However, a basic definition that includes all the important aspects of a culture is ‘the integrated pattern of human knowledge, belief, and behavior that depends upon the capacity for learning and transmitting knowledge to succeeding generations’ (Webster, 2008). Culture is very important if one wants to study a society. It can tell a lot about different aspects of the society and this is the reason why different countries deal with issues differently. This paper will outline and discuss the cultures of China, Saudi Arabia and United States of America and will show how, because of differences in cultures, issues like strategy, team communications, influence tactics, conflict management etc are dealt differently in these countries. Towards the end, recommendations to avoid cross cultural differences will be outlined. United States of America The population of United States of America is very diverse. It has people from many backgrounds. However in general, the American culture is said to be one of the most individualistic culture in the world. This means that people are less integrated in forms of groups. They do not depend on each other and are more concerned about themselves than about others. The country also has a higher than world average score for masculinity. This means that there is differentiation between genders to some extent in the American culture. On the other hand, the score in power distance dimension shows that there are not many differences in societal levels. This can be seen in organizational, family or governmental settings. People expect that power will be distributed equally to a greater extent even if someone is lower in the level of hierarchy. Besides this, the score on uncertainty avoidance is also lower than the world average. This means that people are tolerant to uncertainty and there are few rules and regulation present to control results (Hofstede, 2003). One important characteristic about the work culture in United States is that hard work and integrity is appreciated and also, punctuality is valued. Both mean and women are expected to dress according to the surroundings, situation and weather. The culture does not promote or support gift giving in business as it may be considered as bribe (International Business Center, 2003). As mentioned above, because of the cultures individualistic nature, privacy is valued. The lifestyle in general is causal and informal. Americans believe in voicing their opinions and although this direct speaking is sometimes considered as rude in other cultures, it is totally normal among Americans (American Graduate Education, 2007). From the above details, we can tell a lot about how issues like strategy, team communications, influence tactics and conflict management get affected. Since people believe in voicing their opinions, the strategy is usually bold. In addition to this, since any kind of strategy requires its actors to put in all the effort they can possible put in. Be it in an organization, government or even in one’s personal life. The team communication is very effective because of the low power distance characteristic and informal nature of the American culture. The belief that the power distributed to everyone is equal and the informal nature in groups inhibits any kind of barrier in effective teamwork. Gift giving or anything close to bribery is considered very insulting and inappropriate therefore this approach is not widely used in influence tactics. Conflict management is usually done openly without an arbitrator or a third party (American Graduate Education, 2007). As mentioned above, Americans believe in voicing their opinions so this plays a major role in conflict management strategies used nationwide. In order to remove the communication barriers, in my opinion, one would not have to change much about himself because of the presence of a diverse cultures in the population. However, it is suggested that English is used to communicate any kind of verbal information as this is understood and accepted by almost everyone (American Graduate Education, 2007). Regarding dressing, one is suggested to dress appropriately considering the time of the day, weather, occasion and gathering. China Now we come to the Chinese culture. The culture of the people of China is very different from the American culture just discussed above and it is said to be the exact opposite of the America culture. In fact, the Chinese culture is very different, unique and peculiar if one compares it with the rest of the cultures in the world. It is difficult to understand for those who are not a part of it however one does not need to completely understand it before blending in (Think Quest, 1998). We will now look into this in detail. We can prove the above hypothesis correct by comparing the individualism dimension of the American and Chinese cultures. Unlike the America culture, the people of china are very collectivistic. They are integrated tightly, they look after each other and they are highly dependable on the people around them. This can be seen in their family structures and organization values etc. Both the Chinese and American cultures are similar when it comes to the Masculinity dimension. They both score approximately 68 on a scale of 1 to 100. This again is higher than the world average which means that there are slightly more differences between genders in the Chinese culture compared to the rest of the world. The uncertainty avoidance is slightly higher than United States which means people are more tolerable to not have complete information as compare to the American culture. The fourth dimension of Power Distance is also quite higher than the United States meaning that people expect more differences in organizational hierarchies. The American score on Power distance was 45 while the Chinese score is 85 therefore one can imagine the amount of differences in the structures of organizations, governmental institutions and families etc. One major difference is in the long term orientation dimension of the two cultures. While the American culture was more on the lower side of this dimension, the Chinese culture is known to have the highest ranking factor when it comes to long term orientation. These means that people tend to overcome obstacles with time and not with will and strength (Hofstede, 2003). Some other important details of the Chinese culture include being used to the communist form of government. The Chinese culture is very hospitable and accepts people from all backgrounds. Since there is no one particular religion that is followed in the country, anyone can adjust easily (International Business Center, 2003). All these cultural characteristics largely influence many issues in business. For instance any strategy usually requires everyone to stick together and work collectively because of the collectivistic nature of the culture and also teamwork is very effective as people realize that they are dependent on each other. However, because of high power distance, both strategy and team communication is affected. Communication within team becomes more broken as it has to be passed through several levels of hierarchy. The cultural values are imbedded in the he influence tactics. For example these tactics project the idea of togetherness as it is evident from their advertisements that promote family ties and bonds etc (Lin, 2001). The approach to conflict management is including a third party to settle issues. In order to remove the communication barriers, a few things need to be kept in mind. Firstly, it is suggested to not use too much of hand movements as this distracts the audience. Besides this, there are other non verbal gestures that must be avoided. For instance pointing finger may be considered rude therefore such things must be kept in mind in order to ensure effective communication. English is understood widely in the corporate world therefore this is preferred after Chinese of course (International Business Center, 2003). Saudi Arabia Now we will start discussion on the culture of the last country of the paper. This country has also been selected to be studied because of its different and unique culture. The Chinese and Arabian Cultures are similar in the power distance dimension of their cultures. Unlike the American Cultures, the high power distance ranking indicates the inequality of wealth throughout the Arab world. Because of this, the rich of course have more power than the poor. The uncertainty avoidance dimension of the Arabian culture is also very different from the Chinese and the American cultures. While the Chinese and Americans ranked lower than world average on the uncertainty avoidance ranking, the Arabian culture has a higher score in this dimension. Meaning that people do not tolerate uncertainty at all and this can be the reason why there are so many rules, policies and regulations are implemented in the country. Surprising as it may sound, the Arabian culture scored low on the masculinity dimension considering all the restrictions on the Arabian women etc. The score was 52 which is only slightly higher than the world average. The reason for low masculinity ranking could be that all the restrictions on the women of the country are because of the religion and not the culture. The Arabian culture, like the Chinese culture, is more collectivistic. It had an average ranking of 38 which is way lower than that of the American culture and also the world average for that matter. This means people prefer to stick together and remain integrated (Hofstede, 2003). The Arabic culture is largely shaped by its history and religion (Saudi Embassy, 2006). Therefore history, religion and language are valued the most in the Arabian culture. These cultural characteristics affect many practical issues. The strategy devised by Arabs in any situation usually calls for people to remain cohesive. Also because of high uncertainty avoidance, there are many rules, regulations and policies that must be followed. Because of high power distance, like the Chinese culture, effective team communication is affected. But on the other hand, this is compensated for because of collective nature of the culture. The influence tactics are devised keeping the religion in mind. Anything such as bribery or use of women models in advertisements are avoided because this is against Islam. Conflicts are also managed according to the rules of Shari’ah which is the Islamic or Sacred Law (Hooker, 1996). Also, because of the collectivistic nature of the culture a third party is often included in managing conflicts. There are many cultural traits that must be kept in mind in order to improve communication. Firstly, one must keep in mind that during communication, anything he says or does not offend or insult Islam. The people are very sensitive when it comes to the religion therefore one must dress, talk and behave appropriately. There are certain non verbal gestures that are considered offensive such as the thumbs up sign and crossing of legs etc. Therefore one should avoid these. Arabic is preferred by the people there therefore it is preferred is one communicates or at least uses some words from Arabic. One must not ask too many questions are the inquisitive one is considered as the most unimportant and lastly, if an Arab offers a gift, not accepting it may be considered offensive (International Business Center, 2003). References American Graduate Education (2007) U. S. American Culture Values. Retrieved Oct 1, 2008, from American Graduate Education. Web site: http://www. americangraduateeducation. com/folder2/subfolder2/americanculture. htm Hofstede, G. (2003). China- Geert Hofstede Cultural Dimensions. Retrieved Oct 1, 2008, from Geert Hofstede. Web site: http://www. geert-hofstede. com/hofstede_china. shtml Hofstede, G. (2003). United States of America- Geert Hofstede Cultural Dimensions. Retrieved Oct 1, 2008, from Geert Hofstede. Web site: http://www. geert-hofstede. com/hofstede_united_states. shtml Hofstede, G. (2003). Arab World- Geert Hofstede Cultural Dimensions. Retrieved Oct 1, 2008, from Geert Hofstede. Web site: http://www. geert-hofstede. com/hofstede_arab_world. shtml Hooker, R. (1996) Shariah- Sacred law. Retrieved Oct 1, 2008, from Washington State University. Web site: http://www. wsu. edu/~dee/GLOSSARY/SHARIA. HTM International Business Center. (2003). China. Retrieved Oct 1, 2008, from Cybor Link. Web site: http://www. cyborlink. com/besite/china. htm International Business Center. (2003). United States of America. Retrieved Oct 1, 2008, from Cybor Link. Web site: http://www. cyborlink. com/besite/us. htm International Business Center. (2003). Saudi Arabia. Retrieved Oct 1, 2008, from Cybor Link. Web site: http://www. cyborlink. com/besite/saudi-arabia. htm Lin, C, A. (2001) Cultural values reflected in Chinese and American television advertising. Retrieved Oct 1, 2008, from All Business. Web site: http://www. allbusiness. com/professional-scientific/advertising-related-services/836806-1. html Merriam Webster (2008) Culture. Retrieved 1 Oct, 2008, from Merriam Webster. Web site: http://www. merriam-webster. com/dictionary/culture%5B1%5D Saudi Embassy. (2006) Culture. Retrieved Oct 1, 2008, from Saudi Embassy. Web site: http://www. saudiembassy. net/Country/Culture/Cul. asp Think Quest (1998) Destiny, the Culture of China. Retrieved Oct 1, 2008, from Think Quest. Web site: http://library. thinkquest. org/20443/living. html

Athiesms Problem :: essays research papers

To any of you who doubt the presence and magnificence of our Lord, Jesus Christ; first, I must say that I understand exactly where you are coming from. I, too, at one point was a non-believer. Moreover, I was violently anti-Christian to the point of persecuting these children of God. The following is a letter of my conversion to Christianity. It reads through from my early years and the person that I was at that time through to my troubled childhood and teen years all the way to where I am right now. I will focus on and demonstrate the many ways in which I know that Jesus Christ is Lord and God. Hopefully, you will listen with an open heart and realize the wonderful truth that took me so long to see. At the end are a few easy Bible verses to read for further study. My childhood was much like any other. I was born on January 13, 1980 to loving parents and a solid home. Everything was as good as things could be. I very vibrantly remember when I was two years old writing my name on a piece of paper and running around to show my mother what I had done. It was very important to me even at that young ago to feel respected and loved. I remember playing with my sister and chasing her around the house. We loved each other and our situation. When I was very young, my mother and father divorced and my father left us completely. That was the deal; if he left, it was going to be a clean break. I still remember seeing him for the last time when I was four years old. In the coming years, I would end up seeing him again, but not before much damage had been inflicted in our home. My mother remarried a friend of my fathers' and things again went quite smoothly indeed. I had a fairly strong bond with my stepfather. We did many exciting and interesting things toge ther. I very much enjoyed our time and could not get enough of it. When I was seven, I gave the word that I desired to quit Cub Scouts. This was one of the stronger bonding opportunities between the two of us. I did mention that I had good reasons for my request, but I knew at that very moment that things would never be the same.

Language Development multi-disciplinary

Language development is a multi-disciplinary field containing inputs from psychology, academics, behavioral science, neurology and speech development. It’s marked by the culmination of a series of processes, which begin early in human life where an infant goes through imbibing primary language skills from the environment surrounding him, starts remembering words and phrases without the need for understanding their meaning, slowly build connections and visual imagery to understand patterns in language, and finally, as the child grows older, new meanings and new associations are created and his vocabulary increases as more words are learned.Language development as a term, should not be confused with â€Å"language acquisition† of which it is only a subset. The latter also deals with second language learning ability. Linguists and researchers like Noam Chomsky, Elizabeth Bates and Catherine Snow have developed hypotheses, that recognize and measure the specific learning re sults from general cognitive abilities and the interactions between learners, and their surrounding language environments.Language development contains several discussion points. In this paper, we shall look into the following points, based on past research done in relevant area. The main objective of our research is to infer the importance of each and every building block, in facilitating the language learning ability of children. Understanding these concepts have special significance to the case studies of dyslexics (slow learners), auditory and visually challenged kids, children with a stammering problem and kids of immigrant parents for whom English is not a spoken language at home. The articles selected for this purpose have one theme in common: they offer tips and suggestions, and also the roadmap for applications within a children learning environment.Transduction: Having worked in the field of cognitive development among children, Jean Piaget, a famous Swiss development psyc hologist, has described â€Å"transduction† as the first logic of reference in the primary form of reasoning used by children during the preoperational stages of development (2-7 years). The logic here is: if A causes B today, then A always causes B.The basic definition of transduction is â€Å"reasoning† without the reversible nestings of a hierarchy of classes and relations (Mathcs.edu, p.12). Accordingly, the first verbal reasoning is identified as practical and somewhat, based on perception or imagination. It is one step advancement of something known as â€Å"preconcepts†, identified by early language specialists wherein a child merely learns to associate certain â€Å"semi-concepts† which fit into the notion of what the child observes from surroundings (p.10). An example might be, â€Å"Is worm an animal?† It basically means that at the preconceptual level, the child identifies words with â€Å"shapes† and â€Å"patterns† (p.11) , rather than actual denominators of valid reasoning.In contrast, Piaget identified transduction as an advanced stage of cognitive learning, because the child’s thinking pattern carries less of an egocentric point-of-view, and it is more oriented toward finding the meaning to a desired end (p.12). However, even at this stage, the child doesn’t think of representation based on logic at most times, and can distort reality to suit his own â€Å"perception† about the world (p.12). Transduction, has been identified as the â€Å"discovery of lying†, and also the â€Å"dawn of reasoning† (p.12). The essential prerequisites of a study on transduction in language development for children, would consist of   in the preconceptual stage: 1)a symbolic thought, 2)representations derived from motivation, individual perception, daydreaming, and logical reasoning. In the transduction stage, it matures into a vivid construction of the image, and this constitutes t he child’s first grasp with reasoning, and intellect (p.12).Concept   formation:   There is a close relationship between language and concept forming ability   (Xu, p.2). Fei Xu, at the University of British Columbia contends in her research on cross-linguistic behavior patterns, that concept forming abilities reflect certain correlations between aspects of language, and the guiding blocks of reasoning that present a state-of-the-fact reality for the child, slowly whetting his appetite for gaining knowledge on words, based on situations (p.3).The first feature of this concept forming ability starting with infants began, in â€Å"count nouns† and categorization. Quoting from relevant research, Xu points out that children first learn to differentiate between countable and uncountable nouns, as the object is displayed before them. A familiarization tone might be: â€Å"a rabbit†, â€Å"a pig†, and also â€Å"wheat†, â€Å"sugar† (p.5). Th ere is a natural propensity to learn â€Å"novel nouns† (p.6), which are basically words, that are amusing and pleasant to hear. Studies have shown kids can be unusually brilliant in their intuitive ability to grasp new words, to attach their meaning with words they already know. E.g. â€Å"engineer†, â€Å"medicine† and â€Å"President† (p.7).Once the foundation for nouns are clear, Xu offers examples in which children learned differences between adjectives and nouns, which come â€Å"immediately† after learning nouns. E.g. â€Å"good† boy, â€Å"red† apple (p.7). For infants, conceptual ability at an early stage is not a complete process by itself, as they lack understanding of other signposts of intelligence (p.11). In an experiment suggested in the article, small children faced trouble in counting objects of similar shape. To them, articles of different shapes and sizes offers more intrigue and curiosity into counting. Also, many couldn’t tell if a toy train moving in a circular path was indeed â€Å"one† train (p.12). However, the start of concept-forming ability is the dawn of wisdom for infants.Imagery: Imagery refers to any word that creates a â€Å"picture† in the head of children. For older kids (3-4 years and above), imagery using similes, metaphors, personifications (mainly) and other audio-visual tools are a crucial ingredient in learning language (Savich, 1984). Not only do these methods facilitate an increase in handy vocabulary, but they also develop spatial learning abilities in children. Imagery is recommended for older children, because by then their brain cells in the cerebral hemisphere, are divided enough to allow such functions (Savich, 1984).Some of the methods used are: â€Å"the Big, Black barn†, â€Å"Snow White with pink feathers and velvet hands†. For children, the intuitive ability to render strong associations with these image vocabulary, is so po werful that many of them are able to visualize elements that many adults might ignore; e.g. the differences in colors in mosaic tiles; any object (and that includes human beings) readily start getting associated with the child’s cultivated imagination. Also, unlike the early concept-forming stage, this time children have lesser tendency to   face problems in identifying different words and expressions for similar shapes.Patricia Savich, at the University of Los Angeles, in her research on language-disabled children, has contended that they are facing problems in retaining a strong anticipatory imagery ability (Savich, 1984), compared to other children. In an experiment described, she assigned five spatial tasks to two groups of children based on age, sex, native language and background. In all assignments specified, language-disabled children lagged behind their counterparts in identifying words, from the assortment of visual imagery at their disposition (Savich, 1984).Memo ry: Memory has several study areas in the field of language development: recall memory, visual recognition memory (VRM), social communication, and the emergence of language skills. According to Heimann et al (2006), recall memory involves the technique called â€Å"deferred imitation† or DI as the most scientific method of enabling words, to stick in the memory of children. A lot of research in this field, has successfully established the cosmopolitan reach of the method to enable children to learn new words, sentence structures and also intonations of language. DI basically involves showing a picture to the child, make him repeat the word after the instructor, pursue a delay for 10 to 24 minutes, and come back with the picture again, to retain the word in the child’s sphere of imagination, â€Å"permanently†. There is plenty of flexibility, in how and why DI must be conditioned, for specific child-learning initiatives.VRM is applied to children, 3 years and abo ve, and deals with providing close attention for familiar pools of information. VRM is a close indicator of receptive language skills, and along with imagery, helps the child associate connections between different visual stimulus to form an idea of the world where he’s living in. Social communications consist of two aspects: 1)Joint Attention (JA) where the child learns words by studying the gaze patterns of other children in the creche or play group, and 2)Turn-taking skills (TT), which is the beginning of the first steady â€Å"conversation† between the child and the instructor/parent. The parent familiarizes the child with a situation, and it is his responsibility to come back with an answer. Heimann et al (2006), have contended that the onset of a steady conversation, even though in incorrect grammar, is the fist milestone for children’s language development program.Environmental influence: Finally, apart from the four techniques discussed in our framework, the most pivotal influence kids could derive for learning language programs, lies in the influence laid out by the environment in which they live. According to a cognitive behavior study, by Janellen Huttenlocher, a William S Gray Professor in psychology at the University of Chicago, the language environment in which children live, influences considerably their command over individual differences in syntax acquisition (Harms, 2002). There are dramatic differences between 3- and 4- year olds speech and comprehension, depending upon the â€Å"way† teachers and parents spoke to them.The study was based on 305 children across 40 classrooms in 17 preschool areas comprising people of all income-levels. Sentences used for testing were very descriptive, livid and tested all aspects of grammar retention ability: â€Å"the boy is looking for the girl behind a chair, but she is sitting under the table†, and â€Å"the baby is holding the big block and a small ball†. Natura lly, in classrooms that were extremely exposed to complicated sentences, children were more easily capable of using the correct â€Å"syntax† in language tests, compared to under-privileged downtown Chicago neighborhood schools, that are often under-staffed and children come from much less-privileged backgrounds. Even for lower-income background children, those who came to classrooms with qualified language instructors, the curiosity to learn the proper syntax of conversations, was much higher (Harms, 2002).According to Huttenlocher, the foundations of speech due to environment in childhood sticks for life. Children who grow up listening to â€Å"full† sentence syntaxes, are much more likely to use them comfortably when they grow up, compared to many American adults who really enjoy â€Å"skipping† words and have limited vocabulary for use, even though they might know the meaning of several words (Harms, 2002).SourcesHarms, W. (Nov 21, 2002). Researchers discove r environment influences children’s ability toform, comprehend complex sentences. The University of Chicago Chronicle. Vol.22,No.5Heimann, M., Strid, K., Smith, L., Tjus, T., Ulvund, S.E., Meltzoff, A.N. (Aug 1, 2006).Exploring the relation between memory, gestural communication and the emergence oflanguage in Infancy: a longitudinal study. Public Medical Central. 15(3): 233-249.Mathcs.edu. (Date unknown). Cognitive precursors to language. Accessed :www.mathcs.duq.edu/~packer/Courses/Psy598/Precursors,%20Cognitive.pdf [Dec 16, 2006]Savich, P.A. (December 1984). Anticipatory imagery ability in Normal and Language-disabledchildren. Journal of Speech and Hearing Research. Vol. 27: 494-501.Xu, F. (in press). Concept formation and language development: count nouns and object kinds.University of British Columbia, Oxford handbook of psycholinguists. Oxford UniversityPress (OUP). 2-12.

Heat of neutralization Essay

Discussions: 1.Why theoretical value different from value obtained? It may heat loss to the surroundings. It may have parallax error during taking the reading. 2.Why is usually the cup used in this experiment made of polystyrene? To prevent heat loss to the surroundings because it is a heat insulator. 3.Why the heat of neutralization has a negative sign? The reaction gives out heat that results in the increase of temperature of the products formed. I. Discussion  During this experiment, the pressure in the lab will be constant or essentially constant. When pressure is constant, changes in energy (q) can be related to change in the enthalpy of reaction (ΔHrxn). 1  Energy changes accompany chemical reactions as original bonds are broken and new bonds are formed. Usually the energy change takes the form of heat. If heat is released from the reaction, the change in energy or enthalpy (∆H) is negative and the reaction is exothermic. Conversely, if heat is absorbed by the reaction, the enthalpy is positive and the reaction is endothermic. In this experiment you will measure the enthalpy (∆H) of an acid/base neutralization. A neutralization reaction occurs when acid and base combine to form water as shown in the example below. Overall Reaction: HCl (aq) + NaOH(aq) → NaCl(aq) + H2O(l) TIE: H + (aq) + Cl − (aq) + Na + (aq) + OH − (aq) → Na + (aq) + Cl − (aq) + H2O(l) or NIE: H + (aq) + OH − (aq) → H2O(l) Notice in the neutralization reaction above the Na + and Cl − ions, the spectator ions, remain unchanged. The only chemical reaction occurring is between the H + and OH − ions. Neutralization reactions have heat as a product since energy is released when H + and OH − form a H2O molecule. The heat flow, q, of a process like a chemical reaction can be studied by analyzing its heat exchange with its surroundings. The heat released by a system (a chemical reaction) is absorbed by its surroundings (often this is the solution). qrxn = qsystem = − qsurroundings The equation above says that the heat lost by the system is equal to, but of opposite sign from the heat gained by the surroundings. Thus if the heat change in the surroundings is measured then heat released by the chemical reaction can be calculated. Frequently, such a heat change measurement is done in an insulated container called a calorimeter. In a perfect calorimeter, all of the heat released by the chemical reaction would stay inside the calorimeter. Although our experimental setup utilizes a less  than perfect calorimeter, a â€Å"coffee-cup† calorimeter, the data collected is close to that for a perfect calorimeter. The heat flow into the reaction surroundings (solution), qsurroundings, from the neutralization reaction can be calculated using the following equation where m is the mass of the calorimeter contents, ∆T is the change in temperature, and Cs is the specific heat of the contents. We will assume that the solution in the calorimeter has the same physical properties as water, specifically that Cs = 4.184 J/g†¢Ã‚ °C. qsurroundings = m ∆T Cs In contrast when volume is constant, changes in energy (q) can be related to changes in the internal energy, ΔErxn.2 In this experiment the neutralization of sodium hydroxide (a strong base) with hydrochloric acid (a strong acid) and acetic acid (a weak acid) will be investigated. The base is present in slight excess and, therefore, the acid is the limiting reagent and determines the number of moles of acid and base reacting. Therefore, the heat flow from the reaction is: qrxn = ∆Hrxn (mol acid II. Objectives 1. To determine the enthalpy of neutralization of a strong base with a strong acid. 2. To determine the enthalpy of neutralization of a strong base with a weak acid. 3. To use Hess’ Law to determine the enthalpy of dissociation of the weak acid. III. Procedure – This lab is done is pairs. A. Preparation of Solutions 1. Each lab bench will need make the 0.5000 M acid solutions needed for this lab by diluting 1.000 M stock solutions of HCl and acetic acid. Read the label on the container to obtain the exact molarity of the acid solutions. It will be very close to 1.000M. Lab groups at each bench will share these solutions. 2. Each pair of students will need at least 120 mL of each acid. Accounting for errors and/or extra trials, a total volume of 500 mL of the 0.5000 M acids will be enough for 3 pairs of students. 3. The equipment available for the dilution includes 250.00 and 500.00 mL volumetric flasks. Your instructor will demonstrate how to perform the dilution. (Although volumetric glassware is not commonly used to make quantitative dilutions, the process is appropriate for the solutions used in this lab.) Recall the formula for dilution calculations: M1V1 = M2V2 For this dilution: M1 = 250.00 mL V1 = Molarity of the stock acid solution(known) M2, = Molarity of the dilute acid solution(solve for this – should be close to 0.5000 M) V2 = 500.00 mL 4. Include your dilution calculations in your lab book.

People Attitude about Green Computing

People Attitude about Green Computing According to OECD (2006), the demand for information technology keeps rising every day. Information technology is termed as the driver of business activities in economies. Business information technology tools are needed to enhance business operations in different organizations.Advertising We will write a custom thesis sample on People Attitude about Green Computing specifically for you for only $16.05 $11/page Learn More The rise in demand for information technology products causes firms to invest hence producing information technology tools to help in meeting the demand in the market. Technology keeps changing at a fast pace. What is considered to be an efficient technology today maybe be seen as an archaic technology within a short span of time. This necessitates a continuous process of inventing information technology products. Several generations of information technology products have been developed since the beginning of the 20th century (Information Resources Management Association Khosrowpour, 2001). The 21st century has seen another revolution in the information technology infrastructure. New information technology products keep entering the market (Cerasale Stone, 2004). Yoshida (2010) observed that different types of materials are used in the manufacture of information technology devices. Materials used for manufacturing these products and the manner in which they are used have an enormous impact on the environment (Kuehr Williams, 2003). Information and communication tools are listed among the notable green gas emitters. This is because of the high number of such products which exist in the global market (Smith, 2009). The impacts of information technology products on the environment have been categorized into three groups. These include the first order impacts, second order and third order effects. The first category is composed of the direct effects of the information technology products on the environment. The effect s range from the stage of manufacturing down to the stage of consumption. The second order effects are indirect. They develop from the first order effects. Third effects come as a result of the continued demand for information technology in the global economy (Houghton, 2003). The use of green computers is a trending subject. There is widespread advocacy for the enhancement of the use of green technology. Green computers are effective in maintaining a green environment through the use of environmental friendly materials. Australia falls among the industrialized countries of the world. Therefore, the demand for information and communication technology is accelerating (Houghton, 2003).Advertising Looking for thesis on computer science? Let's see if we can help you! Get your first paper with 15% OFF Learn More Many people keep using computers and related devices without considering their effects to the environment. A survey of Australian universities shows that a high number of students use computers. However, most of them are not familiar with the risks that are posed during the use and disposal of the computers. This is also reflected in other places like offices and institutions where computers are used (Australian Government, 2007; Landwehr, 2005). Houghton, Steele Henty (2003) observed that computers are listed among products that emit green gases to the environment. Computers also account for a high percentage of energy consumption in the world. Approximately, 90% of Australians use computers in offices and at home (John, 2006). Sustainable use of computers is considered as one of the preferred mechanisms of minimizing the effects of information technology on the environment (Friedewald Raabe, 2011). Effective disposal of computers and computer parts that utilize environmentally hazardous substances is given as an option for sustainable use of computers. Several policy guidelines on safe disposal and recycling of computers are bein g developed. Computing devices, which use less energy, have been introduced in the market (Deng Williams 2008). Studies about computer use in the United States show that computers are part and parcel of human life. They aid in the accomplishment of a wide range of tasks. Computers are seen as part of human life. This means that people cannot work well without the support of computers. Computers are found in all forms of organizations, in the United States. Computers are widely found among all population groups. The United States has been in the limelight for a long time for failing to lead the way in the conservation of the environment. The country leads in terms of the wide use of computers and other information technology devices.Advertising We will write a custom thesis sample on People Attitude about Green Computing specifically for you for only $16.05 $11/page Learn More However, pressure has piled, forcing the country to adopt environmental protectio n certifications. The concern for the environment in the United States has shown commendable growth. Most Americans understand the human and environmental dangers that come with the use of computers. They understand the market and the need to purchase computers that adhere to the codes of sustainable environment (Seitz, 2011). Hong Kong is among the countries that are undergoing economic transformation. The demand for information technology in the country is growing. Green computing in Hong Kong is a dominant subject among the consumers of information technology. Companies are busy setting up information and communication technology. This has increased the demand for computers in Hong Kong. Information technology experts embrace the concept of green computing. This is based on the concerns that are raised by the people of Hong Kong. Green computing technology is attained through three approaches. These include social responsibility, environmental protection, and economic progress (C how Chen, 2009). References Australian Government. (2007). Managing the environmental impact of information and communications technology (ICT). Sydney: Australian Government Press. Cerasale, M. V., Stone, M. (2004). Business solutions on demand: Transform the business to deliver real customer value. London: Kogan Page. Chow, W. S., Chen, Y. (2009). Intended Belief and Actual Behavior in green computing in Hong Kong. Journal of Computer Information Systems, 50(2), 136-141. Deng, L., Williams, E. (2008). Measures and trends in energy use of semiconductor manufacturing. Web.Advertising Looking for thesis on computer science? Let's see if we can help you! Get your first paper with 15% OFF Learn More Friedewald, M. Raabe, O. (2011). Ubiquitous computing: An overview of technology impacts. Telematics and Informatics, 28(2), 55-65. Houghton, J. W. (2003). Australian ICT Industries Update 2003, Australian Computer Society and Victoria University, April 2003. Web. Houghton, J. W., Steele, C., Henty, M. (2003). Changing Research Practices in the Digital Information and Communication Environment. Department of Education, Science and Training: Canberra. Information Resources Management Association., Khosrowpour, M. (2001). Managing information technology in a global environment. Hershey, PA: Idea Group Publishing. John, W. H. (2006). Innovation in ICT: A changing landscape. Telecommunications Journal of Australia, 56(2), 1-6. Kuehr, R., Williams, E. (2003). Computers and the environment: understanding and managing their impacts. Kluwer: Dordrecht. Landwehr, C. E. (2005). Green Computing. Security Privacy Magazine, 3(6), 3-3. OECD. (2006). Information and Communications Technology Outlook 2006. OECD: Paris. Seitz, V. (2011). Attitudes Toward Green Computing In The US: Can They Change? Web. Smith, T. (2009). Challenging the chip: from cleanup to sustainability. 9th Asia-Pacific NGO Environmental Conference (APNEC 9), 20–21 November. Kyoto: Japan. Yoshida, F. (2010). Information and communication technology and environmental issues. Environmental Economics and Policy Studies, 12 (3), 133-138.

The Melting Pot essays

The Melting Pot essays In the 1800s and the early 1900s, some people gave the America the name, the melting pot. People imagined this because thousands and thousands of immigrants coming from around the world were coming into the United States in hope of a better life. So most people imagined that all these different cultures were being poured into a giant pot called America, heated to a low boil and molded into one kind of person. If one steps back and thinks about this theory, it isnt entirely true. In fact, its not really true at all. If one takes a closer look at America today, one sees millions of people labeled Americans but not by how they act, what religions they practice and what kind of foods they eat but where they are born. total opposites. Now all Americans must be able to speak English, or at least bad English, and they must also follow the laws set fourth by out four fathers, but no two Americans are alike. Take San Francisco for example. Twenty years ago, it was the center for the hippie movement, but just down the street from Haight and Ashbury there is a place called China Town. A place placed filled with Chinese Americans, shops and temples that could be easily mistaken for buildings only found in China . In Ohio, one could meet a Caucasian farmer, a African American businessman, an Amish family or even a reporter who has a strong German background all in the same day. So many different people living together in one piece of land. Now, after taking a closer look, no one really melted together to make just one kind of person. But what did they do? One could say that the English man could be symbolized as lettuce, Africans as black olives, Germans as radishes, Italians as tomatoes and so on and so forth making a giant salad. All different kinds of fruits and vegetables tossed together in a bowl to create one dish. Everything in close quarters of each other, but still separate and individual. This is how Ame ...