Tuesday, December 31, 2019

The Liberal Arts Creating a Citizen for a Community Near You

The view of what college is and what the experience of college offers, differ dramatically between an individual and the society he or she lives. College has traditionally been viewed as the place young adults go to find themselves, find their career, and start their adult lives. Some have argued that education has veered too far away from tradition, while others argue that the whole idea of Liberal Education needs to keep evolving to meet the demands of the modern world. Those in favor of change argue for more diversity within the curriculum, such as more non-western world education and feminist thought. However, the traditional educational ideal has not completely vanished. At the majority of colleges in America the Liberal Arts, or†¦show more content†¦In the article, What Should It Mean to Have a Liberal Education in the 21st Century?, D.G. Mulcahy presents Paul Hirst’s view of the traditional liberal education. Hirst, qtd. in Mulcahy’s article, explains t hat traditionally there are seven subjects of knowledge that humanity has used to understand reality. These seven subjects are math, the physical sciences, human culture throughout history, morality, art, religion, and philosophy (Mulcahy 469). These subjects are part of the majority of colleges’ liberal education or general education curriculum. While this is the intent of the more traditional Liberal Arts education, the system has evolved to meet the needs of a modern society. Today many argue that changing the Liberal Arts is essential to creating a better society. Mulcahy argues the Liberal Arts should look to empower students (pp. 478 Mulcahy). It should try to give students the confidence to lead, the skills to organize, knowledge to fix problems, or change their world. Some colleges have this as part of their goals within their liberal education programs. This is vastly different from the traditional Liberal Arts education that is still prevalent today. Where traditional Liberal Arts educations taught to inform and give students the skills to work in society, the new version also looks to set students up with the ability to change their society. The newer version of a liberal education creates students who areShow MoreRelatedCultural Appropriation Is Inevitable Like Globalization1546 Words   |  7 Pagesacross the global people wear blue jeans and some consider it a major part of American culture (). The piece of clothing is so synonymous with Ameri can culture some countries like North Korea, have banned the item because the country believes its citizens would start supporting American ideals instead of wearing blue pants. Or the multinational company of Coke-A-Cola has marketed its product across the global but many consumers can identify its products as American goods. 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Monday, December 23, 2019

Essay about Anagnorisis and Existence (Rosencrantz and...

Anagnorisis and Existence The Point of Realization in Stoppards Rosencrantz and Guildenstern Are Dead In Shakespeares Hamlet, the young prince realizes what living is. Yea, from the table of my memory Ill wipe away all trivial fond records, 105 All saws of books, all forms, all pressures past, That youth and observation copied there; And thy commandment all alone shall live Within the book and volume of my brain, Unmixd with baser matter (Hamlet, I, v. 104-110) Upon realizing his fate Ââ€" that he must save the state of Denmark Ââ€" Hamlet must literally discard his prior knowledge and start anew. Aristotle argues that the exact moment when Hamlet realizes his fate Ââ€" by†¦show more content†¦However, whereas in Hamlet the King, Gertrude and Hamlet mistake the two for each other, Rosencrantz and Guildenstern actually mistake themselves. Their lack of identity leaves the two characters as not human Ââ€" they literally do nothing and do not develop. It is for that reason that, though they discover their fate, Rosencrantz and Guildenstern literally cannot die: they dont actually exist. So, when the time comes for their fate to catch up to them, they literally disappear. Hamlet, on the other hand, decides to pick up a sword. To be or not to be, --that is the question:-- Whether ‘tis nobler in the mind to suffer The and arrows of outrageous fortune Or to take arms against a sea of troubles, And by opposing, end them? (Hamlet, III i, 63-67) While Hamlet was also contemplating suicide, the famous soliloquy is even more pertinent for it embodies the difference between the three major young men in Hamlet and Rosencrantz and Guildenstern: Hamlet, Laertes and Fortinbras all take actions into their own hands, albeit sometimes not right away. It is this aspect of the Shakespearian heroes that Stoppard examines in his look at the other two. Herein lies the eternal question that Stoppard poses: do you stand in line and take what He hands out or fight and take arms against a sea of troubles? Both are human responses to the understanding of fate and mortality. The first is the response of a sap, a sheep, someone who isShow MoreRelatedshakespeare influences16068 Words   |  65 Pagessuffer by your own doings. And the faced that you meed hid behind, will crumble. Bernd Engler (1998) freeresearcpapersonline.com in this paper Time in the Sound and furry author argues that one of the main realities of human existence is the constant, unceasing passage of time. The Sound and the Fury explores this reality of time in many new and unexpected ways as tells the tragic tail of the Compson family. The Compsons are an old Southern aristocratic family to whom time has

Sunday, December 15, 2019

Mary Wollstonecraft`s Vindication of the Rights of Woman Free Essays

Mary Wollstonecraft is considered as the â€Å"mother of feminism† or rather the ‘first feminist†. Her book, â€Å"A Vindication on the Rights of Woman†, published in 1792, revolves around the central issue of women’s rights especially with respected to women education. The book is addressed to Edmund Burke and is considered a milestone in the history of feminism. We will write a custom essay sample on Mary Wollstonecraft`s Vindication of the Rights of Woman or any similar topic only for you Order Now Mary Wollstonecraft was born in London, in 1759, to John Edward Wollstonecraft and Elizabeth Dickson. She had an older brother, Edward (Ned), and four younger siblings. Mary Wollstonecraft lived in Paris during the most climactic episode of the French Revolution: the trial and beheading by guillotine of King Louis XVI. Mary’s father was gruff and abusive and her mother passive and neglectful. Despite this, Mary acquired her education in Yorkshire and made friends with clergyman Mr. Clare who recognized her intelligence and introduced her to the Bible, the works of Jonathan Swift, William Shakespeare and John Milton. In 1788 Wollstonecraft began to establish herself as a writer. She was a prolific writer and she wrote for Joseph Johnson’s monthly periodical, The Analytic Review. In 1790 Mary wrote â€Å"A Vindication of the Rights of Men† in response to Edmund Burke’s â€Å"Reflections on the Revolution in France,† and thereby established her credentials not only as a woman of opinion, but as a woman who was happy to voice her opinions on an equal platform with other intellectuals of the period. Edmund Burke, a champion of American Independence as saw the Glorious French Revolution of 1688 as a moderate and cautious settlement. In his â€Å"Reflections on the Revolution in France†, (1790), Burke aimed to denounce Price, to attack the French revolutionaries and their principles, and to defend the British constitution and the notion of prescriptive right. He argued that vice and individual selfishness rather than government were the cause of social unhappiness. Supporting the aristocracy, Burke made part of his argument through sentimentalized pictures of sexual and familial relationships, especially of the French queen Marie Antoinette as mother and lady, worthy object of chivalric devotion. These pictures were particularly revolting to Wollstonecraft, who did not admire much, the aristocratic families. This book, then, is a reply to the arguments of Edmund Burke. In â€Å"A Vindication of the Rights of Woman†, Wollstonecraft calls for a revolution in female manners.   Wollstonecraft argued that females are in all the most important aspects the same as males and women are superior in the context of strength of mind, perserverance and fortitude. On the basis of these philosophical arguments of sexual equality Wollstonecraft called for the reform of female education, arguing that girls should be educated in the same subjects and by the same methods as boys. She further advocated a radical revision of British law to enable a new, egalitarian marriage in which women would share equally in the management and possession of all household resources. She demanded that women be paid equally for their labor, that they gain the civil and legal right to possess and distribute property, that they be admitted to all the most prestigious professions. And she argued that women should be given the right to vote. On Love, Sentiment, Passion and Emotions: Wollstonecraft accuses men of sentimentally viewing women as females rather than human beings and hence has been â€Å"more anxious to make them alluring mistresses than affectionate wives and rational mothers† (Wollstonecraft, xxxi). Wollstonecraft questions why females should always be degraded by being made subservient to love or lust. Wollstonecraft says that love is indeed a noble emotion but it should not be allowed to act as a block to reasoning. Sentimentally, a woman is considered as someone who needs to be trained to be a good wife. However, a woman who is trained only in pleasing her husband will not be able to appeal to a man’s sexuality in the long run. When her sentimental and sexual appeal fades off, she is likely to seek approval from other men and become bitter. The author eloquently says: â€Å"love, perhaps, the most evanescent of all passions, gives place to jealousy or vanity† (Wollstonecraft, page 27). Thus, Wollstonecraft indicates that there must not be too much sentiment should not be considered in the context of women education. Wollstonecraft points out to women who tend to acquire a certain artificial mode of behavior because of popular sentiment as to how they should behave. These people under the cloud of sentiment tend to lose their original powers of thinking. â€Å"The greater numbers of people take their opinions on trust to avoid the trouble of exercising their own minds, and these indolent beings naturally adhere to the letter, rather than the spirit of a law, divine or human† (Wollstonecraft, 185). She says it’s because of their foolish sentiment that makes them fear the â€Å"eye of man†. Their sentiment based behavior is based on having a good reputation and not because of chastity or other virtues. To prove the above conclusion, Wollstonecraft cites the examples of affairs that married women of high class society indulge in, and contrasts it to the degradation suffered by a young woman in love. This is mainly because of the sentiment that married women have good reputation. The respect for the sentiment of the world has, however, been termed the principal duty of woman in the most express words, for Rousseau declares, ‘that reputation is no less indispensable than chastity. According to Wollstonecraft, â€Å"A sentiment that often exists unsupported by virtue, unsupported by that sublime morality which makes the habitual breach of one duty a breach of the whole moral law† (Wollstonecraft, 197). Thus, according to the author, sentiment should be one that is supported by virtue and values. Only such sentiment based on values can lead to morality and truly great character. This value-based sentiment can be had only through education and a thinking mind, which is why the author supports the right of women to education. The author also points to the fact that the sentimental image of a woman is provided through novels. She feels that women rights in particular write works of fiction that are all steeped in sentimental jargon, which tend to corrupt the mind and the heart. The female characters are often stereotyped and shown as submissive and having no thinking brain of their own. Women writers tend to prefer unnatural sentimental flights of fantasy in their works and in the process they create damaging stereotypes.   Wollstonecraft complains of Elizabeth Inchbald’s A Simple Story (1791). She points out that all female writers tend to give a sanction to the libertine reveries of men, poison the minds of their own sex, and strengthen a male prejudice that makes women systematically weak? Contrary to sentimental novels, novels of sensibility matter because they shape behavior and serve as an index to broader cultural ills. Woman is â€Å"made by her education â€Å"the slave of sensibility,† Wollstonecraft observes (174). She holds that novels, music, poetry, and gallantry make women â€Å"creatures of sensation† (78) through their sentimental content. Thus she holds that sentimental stereotypes of women tend to create emotional women: â€Å"All their thoughts turn on things calculated to excite emotion; and feeling, when they should reason, their conduct is unstable, and their opinions wavering† (77). She says that education that tends to inflame the passions must indeed be miserable. Education should strengthen the passions and not inflame them. The sentiment of being always a woman is the â€Å"very consciousness that degrades the sex† (135). Here, Wollstonecraft points out the subtle connection between emotion and reason. She agrees that a man, or a woman, of any feeling, must always wish to convince a beloved object that it is the caresses of the individual, not the sex, that are received and returned with pleasure; and, that the heart, rather than the senses, is moved. â€Å"Without this natural delicacy, love becomes a selfish personal gratification that soon degrades the character† (135). She carries the sentiment still further. She says, affection can justify many personal gestures, but accepting liberal gestures in the name of gallantry is despicable. â€Å"When a man squeezes the hand of a pretty woman, handing her to a carriage, whom he has never seen before, she will consider such an impertinent freedom in the light of an insult, if she has any true delicacy, instead of being flattered by this unmeaning homage to beauty† (135). The understanding can come only by eradication of sentimental notions. She questions Rousseau as to how he can expect women to be virtuous and constant when reason is not the foundation of their character or truth the pursuit of their inquiries. Wollstonecraft opines that women must try to improve their character but they cannot do this as long as they are attached to their sentiments. They need to â€Å"curb the wild emotions that agitate a reed, over which ever passing breeze has power?† (28). According to the author, love, the common passion replaces choice and reason with chance and sensation. This passion however subsides like a fever once the security of marriage sets in. On the other hand, reasoning can allow a man and woman to enjoy the calm tenderness of friendship and the confidence of respect. Underlining the fleeting nature of love, eloquently Wollstonecraft says: â€Å"Passions are spurs to action, and open the mind; but they sink into mere appetites, become a personal and momentary gratification when the object is gained, and the satisfied mind rests in enjoyment† (28). She even says wickedly, that â€Å"caresses which should excite confidence in his children are lavished on the overgrown child, his wife† (28) thereby indicating in a subtle manner that all emotions only serve in keeping her stagnant at her childhood state of mind. She describes the sentiment of a woman as the outcome of â€Å"a mistaken education, a narrow uncultivated mind, and many sexual prejudices† (31) that tend to keep a woman loyal to her husband; if sentiments were to rule, she says, life is better spent in eating drinking and loving. But then, it is only a fleeting shadow. She says that reasoning should be able subside love into friendship. But here, the author clarifies that she does not allude to romantic passion which cannot be clipped, but rather she refers to the small enjoyments of life. Thus we find that the book â€Å"A Vindication of the Rights of Woman† is one that surpasses the test of time. Women today still remain tied to their emotions either by choice or by society. This makes the book relevant even in the modern day context. A revolutionary figure in a revolutionary time, Wollstonecraft took up and lived out not only the liberal call for women’s educational and moral equality, but also virtually all of the other related, violently contested questions of the 1790s– questions pertaining to the principles of political authority, tyranny, liberty, class, sex, marriage, childrearing, property, prejudice, reason, sentimentality, promises, suicide, to mention only a few. Clearly, she struck many a raw nerve and faced huge opposition. That her views are relevant till today, mark Wollstonecraft and her book as classics in feminist literature. The book is a must read for anyone interested in the history of feminism. Bibliography: Wollstonecraft, Mary (1792). A Vindication of the Rights of Woman. How to cite Mary Wollstonecraft`s Vindication of the Rights of Woman, Essay examples

Saturday, December 7, 2019

The Causes of American Revolut free essay sample

Mother land. Finally, a decade of conflicts between the British government and the colonists that began with the Stamp Act in 1765, led to the outbreak of war in 1775 and the Declaration of Independence the 4th of July of 1776. There are both precipitating and underline causes for the revolution. The precipitating causes are the dramatic change in the circumstances like the end of the Seven-Year War (1754-1763) against the French and Indians. From this day this two groups were not a threat anymore.However, the colonists had to pay for the war England had fought ND almost Immediately the Parliament started levying taxes over the colonies. The colonists perceived a dramatic treat to their liberties coming from the English monarchy, a perceived for unchecked power. They agreed to pay taxes If they had a representation In the Parliament. The underline cause of the revolution was the increasing demand of independence, and autonomy the colonies had developed over hundred years they had settled in the New World. We will write a custom essay sample on The Causes of American Revolut or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The consequences would be a profound changes in the political, the creation of the state, united States ofAmerica. The long-term consequence was always a demand for a great among power of concentrate power. Different historians had different opinions on the revolution; for example, J. Franklin Jameson said the nature of the revolution could be divided in four categories: a. Establish personal rights and liberties. Through the war of Independence, American society started to pay attention to their rights. The Improvement of the slaves condition was a very good example. B. Focus on land and availability of land for the settlers.In fact during Andrew Jackson erred was a movement of peasants that can hold lands. C. The abolition of the primogeniture, entail and quotient. The revolutionaries stand for right to land d. The develop of a unique American culture that revolves among colonists. Democracy and egalitarianism was they key of the movement. This unique idea later on provides support to the women movement, finishing of slavery and separation of the church. After all, he suggested that revolution was about power and what kind of government will be better to rule. United States is a decentralized government.There are economical crisis decentralized powers because the colonists did not want to have just a group of people holding power. There is another historian, Hannah Arenat who suggested that American Revolution was a conservative revolution because preserve the right of the English and the leaders came from the English enlightenment. I agree on Jamesons Idea more because his point of view agrees with my knowledge toward American Revolution.

Friday, November 29, 2019

E.E. Cummings Essays - Guggenheim Fellows, La, E. E. Cummings

E.E. Cummings The Poetry of E. E. Cummings E. E. Cummings, who was born in 1894 and died in 1962, wrote many poems with unconventional punctuation and capitalization, and unusual line, word, and even letter placements - namely, ideograms. Cummings' most difficult form of prose is probably the ideogram; it is extremely terse and it combines both visual and auditory elements. There may be sounds or characters on the page that cannot be verbalized or cannot convey the same message if pronounced and not read. Four of Cummings' poems - l(a, mortals), !blac, and swi( - illustrate the ideogram form quite well. Cummings utilizes unique syntax in these poems in order to convey messages visually as well as verbally. Although one may think of l(a as a poem of sadness and loneliness, Cummings probably did not intend that. This poem is about individuality - oneness (Kid 200-1). The theme of oneness can be derived from the numerous instances and forms of the number '1' throughout the poem. First, 'l(a' contains both the number 1 and the singular indefinite article, 'a'; the second line contains the French singular definite article, 'le'; 'll' on the fifth line represents two ones; 'one' on the 7th line spells the number out; the 8th line, 'l', isolates the number; and 'iness', the last line, can mean the state of being I - that is, individuality - or oneness, deriving the one from the lowercase roman numeral 'i' (200). Cummings could have simplified this poem drastically (a leaf falls:/loneliness), and still conveyed the same verbal message, but he has altered the normal syntax in order that each line should show a 'one' and highlight the theme of oneness. In fact, the whole poem is shaped like a '1' (200). The shape of the poem can also be seen as the path of a falling leaf; the poem drifts down, flipping and altering pairs of letters like a falling leaf gliding, back and forth, down to the ground. The beginning 'l(a' changes to 'le', and 'af' flips to 'fa'. 'll' indicates a quick drop of the leaf, which has slowed by a longer line, 'one'. Finally, the leaf falls into the pile of fallen leaves on the ground, represented by 'iness'. Cummings has written this poem so perfectly that every part of it conveys the message of oneness and individuality (200). In mortals), Cummings vitalizes a trapeze act on paper. Oddly enough, this poem, too, stresses the idea of individualism, or 'eachness', as it is stated on line four. Lines 2 and 4, 'climbi' and 'begi', both end leaving the letter 'i' exposed. This is a sign that Cummings is trying to emphasize the concept of self-importance (Tri 36). This poem is an amusing one, as it shows the effects of a trapeze act within the arrangement of the words. On line 10, the space in the word 'open ing' indicates the act beginning, and the empty, static moment before it has fully begun. 'of speeds of' and '&meet&', lines 8 and 12 respectively, show a sort of back-and-forth motion, much like that of the motion of a trapeze swinging. Lines 12 through 15 show the final jump off the trapeze, and 'a/n/d' on lines 17 through 19, represent the deserted trapeze, after the acrobats have dismounted. Finally, '(im' on the last line should bring the reader's eyes back to the top of the poem, where he finds 'mortals)'. Placing '(im' at the end of the poem shows that the performers attain a special type of immortality for risking their lives to create a show of beauty, they attain a special type of immortality (36-7). The circularity of the poem causes a feeling of wholeness or completeness, and may represent the Circle of Life, eternal motion (Fri 26). Cummings first tightly written ideogram was !blac, a very interesting poem. It starts with '!', which seems to be saying that something deserving that exclamation point occurred anterior to the poem, and the poem is trying objectively to describe certain feelings resulting from '!'. black against white is an example of such a description in the poem; the clashing colors create a feeling in sync with '!'. Also, why (whi) suggests amusement and wonder, another feeling resulting from '!'

Monday, November 25, 2019

Jobs and Poverty essays

Jobs and Poverty essays Poverty is defined as having a standard of living below the minimum needed for the maintenance of adequate diet, health, and shelter. With this definition the answer to ending poverty might seem easy. Just create enough jobs so that people are over the poverty line. If we lived in a simple world that might work, but there are many circumstances that will prove that the theory of just creating jobs will not work. Barclay, in his article talks about how he can not keep employees because of the fact they do not have good work ethics, the ability to handle life stresses, or the want to stay clean. He states that he can train them to do a job, but can not make them show up for work, be there on time, or to be clean. With this example just the creation of jobs will not work. Also, if we look at if the world as if it had enough jobs, and the employees showed up on time, would this eliminate poverty? If a person is making minimum wage working 40 hours a week, they will only make $210 a week before taxes are taken out. This works out to be just under $11,000 a year. These numbers are under the minimum requirement for a family of three. Now if the family was made up of two adults, theoretically both adults could work, bringing their standard of living level up above the poverty line, but if you look at the statistics, most families in poverty are of single parents, therefore there is only one working adult. Also with two adults working, the cost of child care is very expensive and it would be more cost efficient for one of the parents to stay home. With the two examples I just presented, we can see that the simple creation of jobs will not eliminate poverty. However, I do feel there are steps to bring down the amount of families below the poverty line in the theory. In order for some of this to work there would need to be some changes in the social welfare system and in the idea of minimum wage, and the allotment of part t...

Friday, November 22, 2019

Externalities in Business Economics and Oil Industry Essay

Externalities in Business Economics and Oil Industry - Essay Example The demand for oil is unlimited where the supply is limited. Consequently, the demand has continued to exceed the supply (Cashin, 2012, p.48). Externalities in economics refer to effects the consumption of a product or service has to third parties. It is also known as spill-over (Hanson, 1974, p.39). The consumption of oil is known to have externalities in that it causes environmental pollution. The gases emitted by vehicles and from industries are known to be harmful to the environment. The pollution has resulted in diseases to human beings and has caused climatic changes. The changes in climate have had far-reaching impacts on the society by causing droughts which have subjected people to poverty and hunger (Hidden costs of energy, 2010, p.70). The government has a role to play in curbing the externalities resulting from the consumption of oil. First of all the government can compel the huge consumers of oil to try and use green energy that is less harmful to the environment. Moreover, they should place a fee on the large consumers of oil who pollute the environment in order to aid the third parties affected.

Wednesday, November 20, 2019

Meteorology Concepts, Hurricanes, Tornadoes, And Flooding Summary Essay

Meteorology Concepts, Hurricanes, Tornadoes, And Flooding Summary - Essay Example They have similar circumstances in which give birth to them and are associated with similar geographic and climatic conditions. In the recent past many great Hurricanes have been known to cause immense damage to coastlines of various nations. The most prominent and notorious hurricane known to have wreaked havoc in the recent history of mankind id Hurricane Katrina that struck the western coast of north America devastating human settlement, leaving hundreds dead and homeless.(Prothero 276) The primary cause of a hurricane is a steep pressure gradient. If the pressure gradient of the immediate atmospheric layer over sea and land exceeds a certain level under the prevailing atmospheric conditions, it leads to the formation of a swirling vortex of warm and cool air layers or air streams that intertwine and start whirling at extremely high speeds. The warm air rises above making space for the heavier / denser and colder air to rush into the land mass.This happens at great dimensions near sea shores and coastal areas where the air temperature and pressure gradient exists for large volumes of air. The extreme pressure and temperature difference causes the triggering of a hurricane that gathers moisture and air mass as it travels towards the nearest coastal point. Due to lower air pressure near coastal areas during the day time, (because lands heats up and cools down faster than water due to lesser specific heat capacity), hurricanes rush into coastal stretches sweeping along and across their territories. The chief ingredients of hurricanes are warm water and warm air. As water starts evaporating, they rise up and gather in the atmosphere where they begin to condense. These water drops then start coagulating and form a cloud. The water droplets on condensation release heat and causing the moist cool air to rise up making way for more warm air. This cycle of warm air with water vapor rising and condensing to create low pressure continues, until it leads to the formation of a vortex above the sea. They become lethal only when they pickup solid masses like: tin sheds trees, construction equipment, concrete, metal and other solid chunks of masses lying open on the ground. This gives it that devastating strength and inertia to cause unthinkable damage to areas where it has swept across. Typhoons are also borne out of wind and water and due to climatic imbalances affecting coastal areas and causing large scale damage to human property and lives. A Typhoon is very similar to a hurricane and the circumstances under which a typhoon is created are the same as that of a hurricane. Several factors contribute to the formation of a typhoon. Hurricane and Typhoons are the major two natural threats that endanger life and human settlement in coastal areas. Apart from the Tsunami, which is a rather rare calamity and is linked with deep sea earthquakes, these two natural disasters pose a more immediate threat to life and property located along the coastlines of various nations. Factors which contribute to the birth of a Typhoon are similar to those of a hurricane, like warm water vapor, warm air above, the sea surface, atmospheric pressure above sea, temperature and pressure imbalances, steep temperature and p

Monday, November 18, 2019

Sales Management - Report on Case Study Example | Topics and Well Written Essays - 3000 words

Sales Management - Report on - Case Study Example The company may wish to examine changing the bonus structure from an annual structure to a quarterly method to enhance motivations for those extrinsically motivated. Research indicates that there is another poor performer in the sales group, Robert, who may also be reliant on extrinsic motivational rewards. Based on all statistics and qualitative evaluations of performance, it is recommended that Concorde develop a training program that focuses on cost controls, lean ideology and production surplus to assist salespersons in reducing expenses that are contributing to a low average gross margin. Jose, especially, requires empathic yet assertive discourse about his performance to motivate and inspire Jose to take responsibility for his sales leadership deficiencies. Concorde and Associates, a company specialising in the sale of computer peripherals to major computer manufacturers, achieved a marginal increase in sales which only surpassed sales forecasts by one percent. During the formal performance evaluation period, the regional sales manager began an investigation into the performance statistics of the sales team to determine which were over-performing and which staff members under-performing. Jose, a sales representative from the Arizona territory, had fallen short of achieving the sales expected in his established sales quota on three of the four main product lines offered by the company. Jose was the largest under-performer in the business, which requires a critical assessment of what strategies should be employed to improve his performance and, if appropriate, other salespersons not achieving expected performance goals. This report highlights what might have contributed to Jose’s poor performance, evaluates other salespersons that might have moderate performance issues, highlights the approach that should be taken to fairly and accurately evaluate Jose’s total performance and provides

Saturday, November 16, 2019

Evolution of Respiratory Systems in Animals

Evolution of Respiratory Systems in Animals Jonathan Codd Respiration in animals is a necessity as it allows the exchange of respiratory gases that are required for survival. There are huge variations in the designs of respiratory systems and each has evolved due to selective pressures in environments, such as food and territory. The evolution of species is driven in part by limited resources and the adaptations in which these can be exploited. This report will describe the evolution from aquatic environments to terrestrial environments as part of this movement, of animals onto land, created a cause for the fast development of newly designed systems in order to support air breathing as oppose to gaining oxygen from water using gills. Lungfish first developed lungs, and the ability to breathe air instead of water, whilst living in aquatic environments and the appearance of air-breathing in fish is the major foundation for terrestrialization. Each species has different requirements due to different techniques of movement and feeding, for exam ple, and respiratory systems are required to support the lifestyle of each species in order to exchange the maximum amount of gas possible. The ability to develop additional processes able to assist in respiration has ensured that the oxygen demands of each animal is met. The respiratory system of animals is crucial for the life as it allows the exchange of gases between an organism and the environment. These respiratory systems have been forced to continually develop new designs depending on new evolutionary pressures from changing environments. Many species have evolved due to the availability of new niches and unexploited resources and thus have been forced to develop supporting mechanisms of respiration. This report examines the evolution of respiration from aquatic environments to the terrestrialization of land and the rapid expansion of respiratory methods that soon followed. The evolution of lungs from gills in the Sarcopterygii lineage has allowed the tetrapod transition onto land and is responsible for the ability to eventually develop fully terrestrial species that are able to respire solely air. Each system must be complementary to the requirements of the species and environment in order to meet the aerobic demands and some species are able to undergo various methods of respiration in order to undergo sufficient rates of gaseous exchange. Each method has been specifically developed for the niche, and uncinate processes have formed in order to assist with ensuring respiration can be as efficient as possible. Introduction The evolution of air breathing was vital in the transition of life from aquatic to terrestrial environments and, therefore the rapid evolution of the animal kingdoms physiology and anatomy in order to exploit all available niches (Graham, 1997). The development of air breathing would not, however, have taken place if the atmospheric composition had not altered during the Phanerozoic era, around 550 million years ago, when the concentration of oxygen showed an increase, likely due to the appearance of large vascular land plants (Ra et al., 2007). The ozone layer was thought to have formed around two billion years ago (Walker, 1978) and is essential for allowing the survival of life on earth by preventing high-energy ultra-violet radiation from entering the earths atmosphere (Parson, 2003). The movement onto land has allowed for a huge expansion in the amount of available niches and therefore caused a rapid radiation in the body plans of animals and a variety of respiratory mechanisms to evolve in support (Ra et al., 2007)    The Importance of Pulmonary Surfactant Lungs differ throughout the animal kingdom as they have evolved for the specific niche of each species; nevertheless one thing they all commonly include is a gas-liquid interface which allows surface tension to arise, causing complications (Daniels and Orgeig, 2003). The pulmonary surfactant system prevents the collapse of respiratory surfaces in lungs due to unequal pressures arising from differently sized alveoli, as well as maintaining a reduced resistance to air flow and improving lung compliance (Daniels and Orgeig, 2003). There is overwhelming evidence that there was a single evolutionary origin of the surfactant system, thought to be from the epithelial cells lining the pharynx (Daniels et al., 2004), due to Surfactant Protein-A (SP-A) or like-structures being present in all the major vertebrate groups; implying that it is an essential pre-requisite for lung evolution (Sullivan et al., 1998). Surfactant has been studied in swim bladders, which have now been shown to be a homol og of the lung, with the original principal function being an anti-adhesive but also with involvement in preventing water from entering the swim bladders or lungs (Daniels et al., 2004) Pulmonary surfactant composition is primarily lipids (around 90%) most of which are phospholipids, and the remaining ten percent is comprised of proteins. (Veldhuizen et al., 1998). There were found to be four types of surfactant proteins (SPs): A, B, C and D which all have varying properties and roles within the surfactant system; SP-B and SP-C were both found to be highly involved in the surface activity due to hydrophobic properties and SP-D is hydrophilic and part of the collectin family (Wà ¼stneck et al., 2005). Dipalmitoylphosphatidylcholine (DPPC) is the most hydrophobic lipid component and therefore DPPC-rich monolayers are able to sit packed tightly together, ensuring the exclusion of water, however they are not well suited for the expansion of the lungs and so are alternated with mixed monolayers when necessary (Wà ¼stneck et al., 2005). Respiration in Fish Fish evolution has allowed both water and air breathing to arise as a means of gas exchange and as these vary greatly in properties, such as density and the oxygen concentration, the mechanistic pumps must also show great diversity to meet the requirements for effective respiration (Brainerd and Ferry-Graham, 2005). Fish that breathe in water use gills which are highly evolved organs that provide large surface areas and thin barriers between the fishs blood and the aquatic environment, thus allowing for a high rate of gaseous diffusion (Evans et al., 2005). Whilst they show properties for gaseous exchange the gills are multifunctional organs which are also responsible for the loss of ions and nitrogenous waste, therefore fish must also have regulatory mechanisms allowing them to successfully osmoregulate (Evans et al., 2005). As fish are continually moving they all require a buccal pressure pump as well as a suction pump, most likely the operculum, working in tandem to allow for expansion and compression to move water across the gills; the suction pump is more prominent in some species such as the Osteichthyes compared to the Chondrichthyes (Ap and La, 2001). A counter-current method is established due to water flowing in the opposite direction to the movement of blood, with the secondary lamell ae being the site of gaseous exchange (Shelton and Randall, 1962). The counter-current mechanism is required as the content of dissolved oxygen is less in water than it would be in the atmosphere (Ibanez et al., 2008) and thus allows high concentrations of gas to be exchanged, whereas a con-current mechanism would too quickly reach an equilibrium and efficient extraction of oxygen would cease (Brainerd and Ferry-Graham, 2005). There are two hypothesis surrounding the origin of air breathing in fish, one suggests that lungs arose only once at the base of the Osteichthyes, whereas opposing arguments have recently suggested that lungs evolved on at least two separate occasions and instead developed in both the Actinopterygii and Sarcopterygii (Brainerd, 1994). Some air breathing fish, such as the Actinopterygian, are able to modify their buccal pump to create a four-pump mechanism, using two expiration and compression cycles, in which expired air is first pumped into the lungs before being compressed out into the atmosphere (Perry et al., 2001). When empty fresh air is inhaled via the expansion of the buccal cavity before finally being compressed into the lungs, this is shown to fully expand and compress and so there is little mixing of expired and fresh air (Perry et al., 2001). Not all air breathing fish show this mechanism as some Dipnoi, lungfish for example, will still ventilate using the primitive two-stroke mechanism (Burggren and Johansen, 1986) and even though there can be mixing of expired and fresh air in the lungs, there has been no significant evidence to suggest that this is any less effective than the four-stroke method as breathing accessories allows the increase in volume of inhaled gases (Brainerd, 1994). Terrestrialisation Lungs were an obvious pre-requisite for the transition onto land but there were many other anatomical and physiological adaptations necessary for tetrapods before they were able to fully terrestrialise and survive free of an aquatic environment (Daeschler et al., 2006). In the late Devonian, terrestralisation occurred as a means of exploring previously unexploited niches and resources through the evolution of tetrapods via the Sarcopterygian lineage, whose habitats were most likely mud-flats neighbouring the waters edge (Graham and Lee, 2004). Tetrapods share common features with both modern day land vertebrates and fishes and the discovery of Tiktaalik rosaea allowed the transitional form to be studied in detail to provide evidence on the necessary adaptations required for terrestrialisation (Sarfati, 2007). The skeleton of Tiktaalik was found to be a lot stronger than that of its sarcopterygii-like ancestors and would have allowed it to support its own body weight in substrate, it also showed a longer snout and loss of bony gill covering but still maintained fish-like qualities, such as well developed gill arches and fin rays which implies that it still spent a majority of time in an aquatic environment (Ahlberg and Clack, 2006). Tetrapod digits were seen to arise from the pectoral fins of Sarcopterygii, although there was seen to be a pattern there remained a few anomalies throughout the development (Sarfati, 2007). When discovered Tiktaalik was a hugely important addition to the fossil record and bridged the gap between fish and tetrapods after confirmation from phylogenetic studies placed it on the Sarcopterygian to tetrapod lineage (Sarfati, 2007). The further anatomical and physiological changes that continued after Tiktaalik were responsible for allowing tetrapods to adopt new mechanisms of feeding and locomotion that were required for survival on land and thus was responsible for a huge step in the necessary radiation of respiratory systems (Clack, 2006). Respiration in Amphibians and Non-Avian Reptiles Amphibians are able to breathe by utilising cutaneous methods, using their skin to exchange gases, which could also suggest that it was an important method of respiration used during the transition onto land (Gans, 1970). [JC1]Some amphibians, that have a large enough surface area to volume ratio, such as certain species of salamanders, will rely solely on cutaneous respiration for gaseous exchange due to an absence of lungs (Feder and Burggren, 1985). Cutaneous respiration is based on an infinite pool of oxygen, through air or water mediums, in what is known as a co-current or open flow and is a passive process as there is a lack of inspiratory or expiratory flow (Burggren and Moallf, 1984). Whilst a few amphibians will rely only on cutaneous respiration, most will just use it as an accessory breathing mechanisms and will have other primary methods of respiration (Brainerd and Owerkowicz, 2006). As a means of understanding the primitive breathing in early tetrapods and air breathing fish, other species of salamanders have been studied. It was found that they use a method similar to the two-stroke mechanism previously described in Dipnoi; in which during inspiration they will expand their buccal cavity in order to create a negative pressure required to draw in fresh air, therefore supporting claims that this is most likely the primite mechanism of respiration seen in Sarcopterygii and early tetrapods (Brainerd et al., 1993). Whilst most air breathers will create a negative pressure to cause air to move into the lungs, frogs and some air breathing fish, are known as positive pressure breathers as they use their buccal chamber to fill with air which they will then actively force into the lungs (Jones, 1982). In frogs this system consists of two valves; the paired nares, which remain open for the majority of the time with the function of connecting the buccal cavity to the external air and the glottal valve which spends the majority of the time closed and is only opened when air is entering or leaving the lungs from the buccal chamber (Jones, 1982). This breathing cycle is most likely to begin with expiration as breath-holding was found to most likely occur during the end of the buccal inspiration (Jones, 1982). Reptiles, are believed to be the first group of animals to involve movements of the ribs in the assisting with lung ventilation (Nielsen, 1961). Aspiration breathing is thought to have arison in amniotes, which includes reptiles and mammals, most of which have tried to eliminate their reliance on costal aspiration by evolving accessory breathing methods to aid in respiration (Brainerd and Owerkowicz, 2006). It is evident that aspiration breathing evolved after the buccal pump mechanisms, however, there have been no transitional forms intermediate between the two found which suggests that aspiration breathing developed abruptly and amniotes soon after lost the ability to utilise a buccal cavity (Brainerd, 1999). Studies in lepidosaurs, established that most have an unidivided pleural cavity, which is also present in amphibians and air breathing fish, suggesting that this is the primitive form and that seperation occurred only later on in evolutionary history (Brainerd, 1999). Crocodiles display many unique features compared to the rest of the reptile group as they use a hepatic pistol to ventilate their lungs by utlising a muscle known as the diaphragmaticus, which is not homologous with any other diaphragmatic muscle (Brainerd, 1999). The liver divides the thoracoabdominal cavity and the diaphragmaticus muscle, orinating from the pelvis and caudal gastralia, is responsible for the expansion of the thoracic cavity by retracting the liver; this creates a negative pressure inside and fresh air is forced in, with inspiration containing an intermediate pause (Brainerd and Owerkowicz, 2006). The multicameral chamber seen in crocdiles allows high aerobic demands to be met, which is vital for their survival, and is only found in few other reptile species (Perry, 1988). Respiration in Avian Reptiles Avian reptiles, more commonly known as birds, use a lung-air sac respiratory system which allows cross-current flow, where air and blood are flowing in the same direction to one another (Scheid and Piiper, 1972). The avian respiratory system is small and compact and the thin barriers are thought to be advantageous during flight but not necessary as the mammalian bat respiratory system is dissimilar but still successful for long migratory flights (Schmidt-Nielsen, 1997). Uncinate processes, which alternate depending on the niche of each bird, are fundamental in the avian respiratory system and assist with the movement of the ribs and sternum, allowing for both inspiration and expiration to take place (Codd et al., 2008). The air sacs are used only for ventilation, with gaseous exchanges taking place as air is passed through the parabronchi, which are thin tubes with openings at each end allowing the uni-directional flow of air, which was found to be unique to avian respiration (Scheid, 1979). The parabronchi are packed into a dense hexagonal array with gas exchange tissue, known as the mantle, surrounding the lumen of each; composing a networks of both blood and air capillaries (Brown et al., 1997). The cross-current system found in birds requires these blood and air capillaries to be in close proximity and arranged parallel to one another in order for diffusion to take place; with the uni-directional flow being studied and found to be of no additional advantage to this cross-current system (Scheid, 1979). There are a total of two inspiratory and expiratory cycles that must occur for the complete flow of air through the lungs (Schmidt-Nielsen, 1997). During the first inspiration air flow is split from the trachea to the caudally grouped air sacs or the dorsobronchi, where it will enter the parabronchi and the gas that remained in the lungs from the previous inspiration is forced cranially (Brown et al., 1997). When the first expiration takes place the air remaining in the caudal air sacs moves through the parabronchi, where gas exchange takes place, and another inspiration forces the air into the cranial air sacs (Brown et al., 1997). To exit the respiratory system, the second expiration forces the air to flow from the cranial air sacs through the ventrobronchi and exits using the trachea (Reece et al., 2015). The trachea involved in avian respiration is made up of complete cartilagenous rings and is found to be around 4.5 times the size of mammalian homologues which allows larger tidal volumes and increased compliance within the system (Reece et al., 2015). There have been no valves discovered in the avian respiratory system and therefore to maintain unidirectional air flow it has been suggested that aerodynamics methods, such as jet flow, must be existing in the system during inspiration, and increased resistance through the intrapulmonary bronchus is used during expiratory flow (Scheid, 1979). Respiration in Mammals The respiratory system in mammals is completely separated from the abdominal cavity and the diaphragm and ribs are both crucial in the mechanism of respiration (Keith, 1905). The muscles of the ribs, such as the intercostals, are required for the expansion of the ribcage, which allows the neccesary generating of negative pressure caused by increased the lung volume for aspiration breathing (Perry et al., 2010). The diaphragm is responsible for the control of inspiration as it is able to contract and elongate the thoracic cavity which creates a negative pressure, thus drawing air into the lungs (Loh et al., 1977). The pericardium is closely bound to the lungs and is connected to the central tendon of the diaphragm allowing the vital pairing of both (Keith, 1905). The elevation of the rib cage, which allows further increase in the available volume for external air to enter the lungs, is also under diaphragmattic control (Loh et al., 1977). The mammalian lung is highly complex and involves lots of branching in order to increase surface area from the trachea, which then splits in series into the primary bronchi, secondary bronchi, tertiary bronchi and finally the alveoli. There are around 3108 alveolar air sacs which comprise of thin membranes to increase the surface area and allow the ease of diffusion of gases between them and the capillaries (Hoppensteadt and Peskin, 2002). Inspiration and expiration cycling allows the constant renewal of air into and out of the lungs and provides mammalian species with sufficient oxygen to meet the aerobic demands (Weibel, 1984). Respiration in Insects There is a wide variety of mechanisms adopted by insects for respiration due to the huge variation in available niches. All will utilise a network of air-filled vessels, which are known as tracheae and tracheoles, and can be as small as 1ÃŽÂ ¼m in diameter, with most terminating nearby to the mitochondria of cells (Miller, 1966). The tracheal system at rest is filled with fluid which is thought to be actively absorbed by the permeable inner tracheal wall when required for breathing, using active transport or secretion from cells (Wigglesworth, 1953). Experiments have demonstrated that during tracheal compression, which is controlled by an increased pressure inside the exoskeleton, the tracheae noticeably shrink in diameter to aid in air convection and increased diffusion of oxygen into the tissues due to a high pressure build up (Westneat et al., 2003). Spiracles are required at the external and internal barrier in the tracheael system to allow external air through the skin; and previous experiments have found if these are blocked then the insect cannot survive as respiration will cease (Fraenkel and Herford, 1938). Interneurons are essential as they are responsible for the pairing of spiracle movement with ventilation by communicating with the spiracles motor neurones (Miller, 1966). The discontinuous gas exchange cycles present in insects will typically occur in three stages, beginning the closed-spiracle phase where only small amounts of external gas exchange are able to take place (Lighton, 1996). A fluttering-spiracle phase permits oxygen uptake for the diffusion of gases into the tracheael tissues and finally an open-spiracle phase concludes the cycle whilst allowing the release of accumulated carbon dioxide (Lighton, 1996). Ventilation is under endogenously controlled rhythms produced by the central nervous system which allows aerobic respiration rates in flight muscles to be so successful that they can be challenged only by certain species of bacteria (Miller, 1966). During insect respiration air is sucked into the tracheal system by creating negative alterations in internal pressure using the pumping of hemolymph by the heart or the contracting of abdominal muscles, others can include passive diffusion or autoventilation (Westneat et al., 2003). Respiration in Cetaceans Cetaceans have evolved a much more unusual respiratory system to any terrestrial mammal, as the nasal passageway has moved to a more dorsal position to allow the exclusion of water from the system and ease of breathing as they surface (Thomas and Kastelein, 1991). A nasal plug, made up of nasal plug muscle, connective tissue and adipose tissue, is responsible for the seperation of the internal and external environment and is retracted anteriolaterally for respiration by bilaterally paired nasal plug muscles (Thomas and Kastelein, 1991). The lung size of cetaceans varies depending on the depth of the dives undertaken, due to the variety of pressures causing differing extents of thoracic collapse (Piscitelli et al., 2010). It was found that the lung size will be reduced in cetaceans that undergo deeper dives and there will be an increase in the thoracic mobility. The lungs of larger whales were found to possess extremely heavy myoelastic bundles in the air sacs and alvolar membranes that were not found in much smaller cetacea (Wislocki, 1942). Conclusion The evolution of respiratory systems has been an extremely specific process that has showed both gradual, and rapid changes throughout the many lineages of the animal kingdom in order to encorporate universal requirements, as well as accessory breathing mechanisms (Weibel, 1984). Respiration is a vital life process required for survival and it is essential that gas exchange is as efficient as possible in order to allow high oxygen-demanding aerobic activities to take place when necessary (Perry, 1988). Each respiratory system may have a variety of additional mechanisms, uncinate processes, that assist in the breathing mechanics to enable the ease of transporting larger volumes of air within each system (Codd et al., 2008). The pulmonary surfactant system is of great importance, as it allows the successful existance of such mechanisms by preventing collapse of respiratory surfaces, as well as aiding them by increasing lung compliance and reducing the resistance to air flow (Daniels and Orgeig, 2003). The evolution of efficient respiratory systems, when paired with other necessary adaptations, has provided a foundation for more complex body systems to develop to allow the utilisation of previously unexploited resources and niches, thus providing organisms advantages in the animal kingdom (Graham, 1997). Bibliography Ahlberg, P.E., Clack, J.A., 2006. Palaeontology: A firm step from water to land. Nature 440, 747-749. doi:10.1038/440747a Ap, S., La, F.-G., 2001. Ventilatory modes and mechanics of the hedgehog skate (Leucoraja erinacea): testing the continuous flow model. J. Exp. Biol. 204, 1577-1587. Brainerd, E.L., 1999. New perspectives on the evolution of lung ventilation mechanisms in vertebrates. Exp. Biol. Online 4, 1-28. doi:10.1007/s00898-999-0002-1 Brainerd, E.L., 1994. The Evolution of Lung-Gill Bimodal Breathing and the Homology of Vertebrate Respiratory Pumps. Integr. Comp. Biol. 34, 289-299. doi:10.1093/icb/34.2.289 Brainerd, E.L., Ditelberg, J.S., Bramble, D.M., 1993. Lung ventilation in salamanders and the evolution of vertebrate air-breathing mechanisms. Biol. J. Linn. Soc. 49, 163-183. doi:10.1111/j.1095-8312.1993.tb00896.x Brainerd, E.L., Ferry-Graham, L.A., 2005. Mechanics of Respiratory Pumps, in: Physiology, B.-F. (Ed.), Fish Biomechanics. Academic Press, pp. 1-28. doi:10.1016/S1546-5098(05)23001-7 Brainerd, E.L., Owerkowicz, T., 2006. Functional morphology and evolution of aspiration breathing in tetrapods. Respir. Physiol. Neurobiol., Frontiers in Comparative Physiology II: Respiratory Rhythm, Pattern and Responses to Environmental Change 154, 73-88. doi:10.1016/j.resp.2006.06.003 Brown, R.E., Brain, J.D., Wang, N., 1997. The avian respiratory system: a unique model for studies of respiratory toxicosis and for monitoring air quality. Environ. Health Perspect. 105, 188-200. Burggren, W., Moallf, R., 1984. Active regulation of cutaneous exchange by capillary recruitment in amphibians: Experimental evidence and a revised model for skin respiration. Respir. Physiol. 55, 379-392. doi:10.1016/0034-5687(84)90059-8 Burggren, W.W., Johansen, K., 1986. Circulation and respiration in lungfishes (dipnoi). J. Morphol. 190, 217-236. doi:10.1002/jmor.1051900415 Clack, J.A., 2006. The emergence of early tetrapods. Palaeogeogr. Palaeoclimatol. Palaeoecol. 232, 167-189. doi:10.1016/j.palaeo.2005.07.019 Codd, J.R., Manning, P.L., Norell, M.A., Perry, S.F., 2008. Avian-like breathing mechanics in maniraptoran dinosaurs. Proc. R. Soc. Lond. B Biol. Sci. 275, 157-161. doi:10.1098/rspb.2007.1233 Daeschler, E.B., Shubin, N.H., Jenkins, F.A., 2006. A Devonian tetrapod-like fish and the evolution of the tetrapod body plan. Nature 440, 757-763. doi:10.1038/nature04639 Daniels, C.B., Orgeig, S., 2003. Pulmonary Surfactant: The Key to the Evolution of Air Breathing. News Phsiology Sci. 18, 151-157. Daniels, C.B., Orgeig, S., Sullivan, L.C., Ling, N., Bennett, M.B., Schà ¼rch, S., Val, A.L., Brauner, C.J., 2004. The Origin and Evolution of the Surfactant System in Fish: Insights into the Evolution of Lungs and Swim Bladders. Physiol. Biochem. Zool. Ecol. Evol. Approaches 77, 732-749. doi:10.1086/422058 Evans, D.H., Piermarini, P.M., Choe, K.P., 2005. The Multifunctional Fish Gill: Dominant Site of Gas Exchange, Osmoregulation, Acid-Base Regulation, and Excretion of Nitrogenous Waste. Physiol. Rev. 85, 97-177. doi:10.1152/physrev.00050.2003 Feder, M.E., Burggren, W.W., 1985. Cutaneous Gas Exchange in Vertebrates: Design, Patterns, Control and Implications. Biol. Rev. 60, 1-45. doi:10.1111/j.1469-185X.1985.tb00416.x Fraenkel, G., Herford, G.V.B., 1938. The Respiration of Insects Through the Skin. J. Exp. Biol. 15, 266-280. Gans, C., 1970. Respiration in Early Tetrapods-The Frog is a Red Herring. Evolution 24, 723-734. doi:10.2307/2406552 Graham, J.B., 1997. Air-Breathing Fishes: Evolution, Diversity, and Adaptation. Academic Press. Graham, J.B., Lee, H.J., 2004. Breathing Air in Air: In What Ways Might Extant Amphibious Fish Biology Relate to Prevailing Concepts about Early Tetrapods, the Evolution of Vertebrate Air Breathing, and the Vertebrate Land Transition? Physiol. Biochem. Zool. 77, 720-731. doi:10.1086/425184 Hoppensteadt, F.C., Peskin, C.S., 2002. Gas Exchange in the Lungs, in: Modeling and Simulation in Medicine and the Life Sciences, Texts in Applied Mathematics. Springer New York, pp. 75-108. doi:10.1007/978-0-387-21571-6_3 Ibanez, J.G., Hernandez-Esparza, M., Doria-Serrano, C., Fregoso-Infante, A., Singh, M.M., 2008. Dissolved Oxygen in Water, in: Environmental Chemistry. Springer New York, pp. 16-27. doi:10.1007/978-0-387-49493-7_2 Jones, R.M., 1982. How toads breathe: Control of air flow to and from the lungs by the nares in Bufo marinus. Respir. Physiol. 49, 251-265. doi:10.1016/0034-5687(82)90077-9 Keith, A., 1905. The Nature of the Mammalian Diaphragm and Pleural Cavities. J. Anat. Physiol. 39, 243-284. Lighton, J.R., 1996. Discontinuous gas exchange in insects. Annu. Rev. Entomol. 41, 309-324. doi:10.1146/annurev.en.41.010196.001521 Loh, L., Goldman, M., Davis, J.N., 1977. The assessment of diaphragm function. Medicine (Baltimore) 56, 165-169. Miller, P.L., 1966. The Regulation of Breathing in Insects, in: J.W.L. Beament, J.E.T. and V.B.W. (Ed.), Advances in Insect Physiology. Academic Press, pp. 279-354. doi:10.1016/S0065-2806(08)60189-7 Nielsen, B., 1961. On the Regulation of the Respiration in Reptiles. J. Exp. Biol. 38, 301-314. Parson, E.A., 2003. Protecting the Ozone Layer: Science and Strategy. Oxford University Press. Perry, S.F., 1988. Functional Morphology of the Lungs of the Nile Crocodile, Crocodylus Niloticus: Non-Respiratory Parameters. J. Exp. Biol. 134, 99-117. Perry, S.F., Similowski, T., Klein, W., Codd, J.R., 2010. The evolutionary origin of the mammalian diaphragm. Respir. Physiol. Neurobiol. 171, 1-16. doi:10.1016/j.resp.2010.01.004 Perry, S.F., Wilson, R.J.A., Straus, C., Harris, M.B., Remmers, J.E., 2001. Which came first, the lung or the breath? Comp

Wednesday, November 13, 2019

Malcolm X - Changes in Malcolm’s Perspective of White People Essay

Malcolm X - Changes in Malcolm’s Perspective of White People Malcolm X was one of the primary religious leaders and reformers of the 1960, where he fought for and ultimately gave his life for racial equality in the United States. His father was a reverend who believed in self-determination and worked for the unity of black people. Throughout Malcolm’s life he was treated horribly by white people, hence shaping his misconceptions of all white people and developing his strong belief in black separatism. It wasn’t until years later where he embraced his black identity and discovered all races could live and work together for a common goal, brotherhood. Malcolm X was born Malcolm Little on May 19, 1925, in Omaha, Nebraska. Malcolm’s father believed in self-determination and worked for the unity of black people. Malcolm was raised in a background of ethnic awareness and dignity, but violence was started by white racists trying to prevent black people from succeeding. From the very beginning, even though Malcolm had not discovered his black identity, he had a very clear picture of what it meant to be black in the United States. As a young child, Malcolm, his parents, brothers, and sisters were shot at, harassed, threatened and burned out of their home. One of Malcolm’s earliest memories was when the KKK set his family’s house on fire as the â€Å"white police and fireman stood around and watched our house burn to the ground† (p.3). This type of racism ultimately led to the demise...

Monday, November 11, 2019

Course: Contract and Liquid Chemical Co.

The Cost Analysis for Decision Making project is intended to be a comprehensive evaluation of the key objectives covered throughout this course. It will challenge you to apply your knowledge of cost information when evaluating the decision to make or buy a product. Please use this outline and grading rubric as a guide to completing your course project. It provides specific details of the required elements of the project, and it will be used by your instructor as a grading guide. Read Integrative Case 4-61, â€Å"Make versus Buy,† on pages 151 and 152 of the course text.Assume that you are the general manager (Mr. Walsh) faced with this decision. You have identified the following four alternatives available to Liquid Chemical Co. †¢Alternative A: It is the status quo. (i. e. , Liquid Chemical Co. will continue making the containers and performing maintenance. ) †¢Alternative B: Liquid Chemical Co. will continue making the containers, but it will outsource the maintena nce to Packages, Inc. †¢Alternative C: Liquid Chemical Co. will buy containers from Packages, Inc. , but it will perform the maintenance. Alternative D: It is completely outsourced. Packages, Inc. will make the containers and provide the necessary maintenance. Your project should include the following items: †¢Part (a): Discuss each of the four alternatives outlined above. Identify the relevant costs (including amounts) for each of the four alternatives, and explain why these costs are relevant to the decision. Identify any costs that are not relevant, and explain why they are not relevant. What are the advantages and disadvantages of each alternative? Who benefits and who loses? Part (b): Other than the relevant costs identified in Part (a), what additional information would you use when making your decision? Are there financial factors other than those identified in the case study that you would incorporate into your decision? What nonfinancial information would affect y our decision? †¢Part (c): As the general manager, which alternative would you choose, and why? Support your conclusion with facts and figures, as necessary. The Liquid Chemical Company manufactures and sells a range of high-grade products. Many of these products require careful packaging.The company has a special patented lining made that it uses in specially designed packing containers. The lining uses a special material known as GHL. The firm operates a department that maintains and repairs its packing containers to keep them in good condition and that builds new ones to replace units that are damaged beyond repair. Mr. Walsh, the general manager, has for some time suspected that the firm might save money and get equally good service by buying its containers from an outside source. After careful inquiries, he has approached a firm specializing in container production, Packages, Inc. and asked for a quotation. At the same time, he asked Mr. Dyer, his chief accountant, to let h im have an up-to-date statement of the costs of operating the container department. Within a few days, the quotation from Packages, Inc. , arrived. The firm proposed to supply all the new containers required—at that time, running at the rate of 3,000 per year—for $1,250,000 a year, the contract to run for a guaranteed term of five years and thereafter renewable from year to year. If the number of containers required increased, the contract price would increase proportionally.Packages, Inc. , also proposed to perform all maintenance and repair work on existing packaging containers for a sum of $375,000 a year, on the same contract terms. Mr. Walsh compared these figures with Mr. Dyer’s cost figures, which covered a year’s operations of the container department of the Liquid Chemical Company and appear in Exhibit 4. 13. Walsh concluded that he should immediately close the packing container department and sign the contracts offered by Packages, Inc. He felt an obligation, however, to give the manager of the department, Mr.Duffy, an opportunity to question his decision before acting. Walsh told Duffy that Duffy’s own position was not in jeopardy. Even if Walsh closed his department, another managerial position was becoming vacant to which Duffy could move without any loss of pay or prospects. The manager Duffy would replace also earned $80,000 per year. Moreover, Walsh knew that he was paying $85,000 per year in rent for a warehouse a couple of miles away that was used for other corporate purposes. If he closed Duffy’s department, he’d have all the warehouse space he needed without renting additional space.Duffy gave Walsh a number of considerations to think about before he closed the department: â€Å"For instance,† he said, â€Å"what will you do with the machinery? It cost $1,200,000 four years ago, but you’d be lucky if you’d get $200,000 for it now, even though it’s good for another five years. And then there’s the stock of GHL (a special chemical) we bought a year ago. That cost us $1,000,000, and at the rate we’re using it now, it’ll last another four years. We used up only about one-fifth of it last year. Dyer’s figure of $700,000 for materials includes $200,000 for GHL.But it’ll be tricky stuff to handle if we don’t use it up. We bought it for $5,000 a ton, and you couldn’t buy it today for less than $6,000. But you’d get only $4,000 a ton if you sold it, after you’d covered all the handling expenses. † Walsh also worried about the workers if he closed the department. â€Å"I don’t think we can find room for any of them elsewhere in the firm. However, I believe Packages would take all but Hines and Walters. Hines and Walters have been with us since they left school 40 years ago. I’d feel bound to give them a supplemental pension—$15,000 a year each for five years, sa y.Also, I’d figure a total severance pay of $20,000 for the other employees, paid in a lump sum at the time we sign the contract with Packages. † Duffy showed some relief at this. â€Å"But I still don’t like Dyer’s figures,† he said. â€Å"What about this $225,000 for general administrative overheads? You surely don’t expect to sack anyone in the general office if I’m closed, do you? † Walsh agreed. â€Å"Well, I think we’ve thrashed this out pretty well,† said Walsh, â€Å"but I’ve been turning over in my mind the possibility of perhaps keeping on the maintenance work ourselves. What are your views on that, Duffy? â€Å"I don’t know,† said Duffy, â€Å"but it’s worth looking into. We wouldn’t need any machinery for that, and I could hand the supervision over to the current supervisor who earns $50,000 per year. You’d need only about one-fifth of the workers, but you cou ld keep on the oldest and save the pension costs. You’d still have the $20,000 severance pay, I suppose. You wouldn’t save any space, so I suppose the rent would be the same. I don’t think the other expenses would be more than $65,000 a year. † â€Å"What about materials? † asked Walsh. â€Å"We use 10 percent of the total on maintenance,† Duffy replied. Well, I’ve told Packages that I’d give them my decision within a week,† said Walsh. â€Å"I’ll let you know what I decide to do before I write to them. † Assume the company has a cost of capital of 10 percent per year and uses an income tax rate of 40 percent for decisions such as these. Liquid Chemical would pay taxes on any gain or loss on the sale of machinery or the GHL at 40 percent. (Depreciation for book and tax purposes is straight-line over eight years. ) The tax basis of the machinery is $600,000. Also assume the company had a five-year time horizon for this project and that any GHL needed for Year 5 would be purchased during Year 5.

Saturday, November 9, 2019

Rape Shield Laws and Kobe Bryant Case essays

Rape Shield Laws and Kobe Bryant Case essays Colorado Rape Shield Laws and the Kobe Bryant Case Laws in forty-nine states limit the use of a victim's prior sexual history as an attempt to undermine the credibility of the victim=s testimony. Arizona is the only state that does not have these laws in place, which are referred to as rape shield laws. One state that has been surrounded by much controversy as of late is the state of Colorado with the notorious Kobe Bryant case. It was not until the 1970's that most states enacted the Rape Shield Law to ease the emotional burden of rape victims who testified in court. ALate in 1978, the United States Congress followed this trend and enacted Rule 412 of the Federal Rules of Evidence@ (Womens Issues). Rule 412 states that evidence used to prove the victim engaged in other sexual behavior, or evidence to prove any victim=s past sexual history, is generally inadmissible in any civil or criminal trials involving alleged sexual misconduct. This law may or may not be a good thing. If a lawyer tries to question victims about their sexual past, it will tend to humiliate them and make them want to drop the charges. If the victims know that they are going to be questioned about the number of people they have had sex with, how often they have sex, or what their preferences are, most people would not feel comfortable answering the questions, especially with family and friends in the courtroom supporting them. The defending attorney knows and loves this fact. If victims are humiliated and drop the charges, it is a win for the defense. On the other hand, it has been almost thirty years since the law was introduced. A lot has changed in those thirty years. People are a lot more open about sex and their sexual views. ADue to this and the increasing awareness of rape, there are some people who believe that the Rape Shield Law is no longer necessary and should be repealed. Some of these people believe that the rape shield law ...

Wednesday, November 6, 2019

Essay on Several Different Papers part 3Essay Writing Service

Essay on Several Different Papers part 3Essay Writing Service Essay on Several Different Papers part 3 Essay on Several Different Papers part 3Essay on Several Different Papers part 2Week 7 Decision making processThe decision making process is very important for the successful business development but often this process confronts substantial challenges, especially when family members come into business together and fail to decide their responsibilities and determine the essence of the decision making process. In this regard, referring to the case of the retail clothing store, run along with a family member, it is possible to recommend to determine exactly how decisions are made within the company and who exactly takes what decisions.First of all, the decision making process should be collective that means that both family members take decisions. However, their authority should not overlap that means that they should take decisions on different issues. For instance, one family member is responsible for suppliers and delivery of products to the clothing store, while another is responsib le for sales, human resources and public relations of the company (Masterson Picton, 2004). In such a way, they should distribute different areas of their responsibility between each other. Thus, both family members will participate in the decision making process and will play an important part in this process. At the same time, such decision making model will be effective because family members will distribute their functions and will focus on their specific fields (Breneman Taylor, 2006). As a result, they will not waste their time and efforts on other fields that will maximize their effectives in those areas, which they are responsible for.On the other hand, such decision making model will decrease the risk of conflicts. As each family member is responsible for his/her fields only, then they do not intersect and they do not have the pretext and cause for the conflict. They just concentrate on their own work and decisions.Nevertheless, the proposed model does not mean that there will be no conflicts at all. On the contrary, conflicts still are likely to occur because they comprise a natural part of any business. In such a situation, the prevention of conflicts is particularly important because conflicts can deteriorate the organizational performance. The conflict prevention and resolution should involve consultations between the two family members. What is meant here is the fact that they should find consensus to take the right decision that meets the vision of each family member. They should learn to compromise to make effective and fast decisions. For instance, if family members face a conflict over funding of the new promotional campaign or singing a contract with a new supplier, they should weigh both options and select the one that matches the current needs of the company, its mission, vision and marketing strategy. Therefore, if the company lacks supplies, the new supplier should be signed, while if the company has low sale rates, the company should rather invest into the promotion of its products and brand.Thus, the conflict prevention is very important, while the resolution of conflicts should involve the close interaction and communication between both family members running the store. In this regard, the distribution of responsibilities and functions and, therefore, decision making processes will decrease the risk of conflicts and help the company to develop successfully.

Monday, November 4, 2019

P.O.S essay 2 Example | Topics and Well Written Essays - 1000 words

P.O.S 2 - Essay Example Benefits of the POS System The POS system being online will ensure that all across the Wal-Mat store there will be real and up dated POS solutions. In addition, since the POS system is custom made it will be custom made and thus compatible with most of the programs and hardware, which are to be installed. Furthermore, it will ensure that there is less inventory shrinkage. This is because through POS system it will be easier to keep track of obsolete and damaged inventories. Because of the effectiveness with which customers are served, it will ensure and lead to more customer service efficiency, customer satisfaction and customer retention and loyalty. It will facilitate timely and accurate reports as well as fast and effective analysis of sales date which is paramount to management information for decision-making process. In addition, the online POS software package will offer the advantage of management through remote access i.e. while in different store and while on leave. Moreover , having installed POS system Wal-Mat can easily expand in case of increased customers. This is because it only needs to mount new computers and other relevant hardware to create a new service station. The other minor benefits that Wal-Mat will get by setting up the POS will be prevention of theft, accuracy, and effective inventory management. ... Furthermore, with the retail POS system Wal-Mat will experience potential security risks with regard to software corruption by viruses, credit cards, and debit cards. Moreover, considering that the POS system is custom made, with the software applications used there will be need for regular updates to the system that may be done at an extra cost. POS Contingency Measures Since running of the POS system will be dependent on the electricity for smooth running, implies that in case of power outages the business will stop. These business standstill means loss of revenue, dissatisfaction of customers and under utilization of resources. Wal-Mat to combat electricity failures has bought and installed a diesel driven generator with the capacity to run the POS system for more than 12 hours. In addition, UPS s- uninterruptible power supply - have been fitted on every computer. This is to ensure smooth transition and business continuation while switching to the generator. Wal-mat has also set u p another back-up server computer in another independent location that store up real-time transactions happening in the main business stalls. This is meant to militate against any outages of the POS system in case of fire breakout in the main business area. In addition, after every 1 hr of the normal business hours, it is a requirement that there be a print out of sales receipts for every one hour. This is to ensure that in case of failure of the two back-up servers there can be hardcopy back up to mitigate it. Weakness and Recommendations to POS System Due to the continued high customer satisfaction, there has been an influx of new clients to our business, which has resulted to slower than normal

Saturday, November 2, 2019

Within the context of 1881-1991, how far was the Cuban missile crisis Essay

Within the context of 1881-1991, how far was the Cuban missile crisis the low point in relations between the USSR and the West - Essay Example Graham’s Essence of decision: Explaining the Cuban Missile Crisis explains in great detail the situation of both the United States and Cuba during the crisis and presents the decisions that the authorities and military leaders of the two states had to make. Gaddis’ The Cold War: A New History discusses about the cold war in depth and analyse the relationship that existed between the US and the Soviet Union over several years. Andrew Kydd on the other hand analyzes the relationship that existed between different countries of the world; especially the major powers. Years of Russia, the USSR and Collapse of the Soviet Communism traces the history of the USSR and its ultimate collapse as a world super power. The book follows the relationship that the USSR and Russia had with the United States, Cuba and other countries. Many of the books that have been used present similar facts or points of view. Although sources authored by the CIA, Cimbala Fenno and Parrot were referred to and were quite useful in getting insights into the state of affaires at during the Cuban missile crisis, they have not been directly referred to in the body of the paper. Several reputable websites have also been used in the study. All of the online sources referred to are published by reputable organizations or persons. Ibiblio, for example traces the events that led to the missile crisis while Nuclear Files shows the timeline of the events of the time. The US State Department on the other hand shows the Act that was enacted in the country in view of the Cuban crisis and the relations that the country had with Russia and the USSR. In general, all the sources that have been used are reputable and reliable although some may be considered to be outdated. Many of the sources agree on different topics although they are written and published in the United

Thursday, October 31, 2019

Pros and cons of the different learning methods Essay

Pros and cons of the different learning methods - Essay Example Commercially purchased social studies learning – commercially purchased social studies learning such as technology assisted teaching medium (DVD tutorials, online learning) became more versatile today than they were first introduced, it still cannot facilitate critical reflection and decision making due to the limitation of the medium (Rose and Fernlund, 1997).  Ã‚   Unlike the integrative method of social studies learning where a student can infer to various discipline in synthesizing his or her interpretation of the universe, commercially purchased social studies learning are only limited to the pre-set curriculum of the program purchased.   Online learning may provide interaction but the coverage of discussion is not as comprehensive compared to integrative mode of learning. Commercially purchased social studies learning can also be costly because the mode of instruction is highly commercialized.d) Teacher-prepared social studies learning – perhaps the most commo n teaching method is the teacher prepared social studies learning.   Teachers even predate the books as learning was already facilitated through oral transfer when the printed text was not yet around.   Transfer of knowledge is typically done on a lecture where a student can ask a question and the teacher answering the same.   The method of learning through a teacher prepared curriculum or lesson plan is no longer responsive to the need of the present environment where students has to interpret and synthesize information and making meaning out of them.   Lectures delivered by teacher prepared syllabus are limited to the range of knowledge of the teacher thus making synthesis limited due to the limitation of the input. This type of learning however is also cost effective because the cost associated to the transfer of knowledge and skill is only limited to covering the salary of the teacher and his or her instruction materials. III. Supplementary Materials The usage of chart to compare and contrast the pros and cons of integrated social studies learning,

Tuesday, October 29, 2019

Should the State Try to Make You a Better Person Essay Example for Free

Should the State Try to Make You a Better Person Essay The importance of becoming a better individual relies on a personal desire of satisfying the necessity of being accepted in a society. Most individuals want to be better people in order to be happier and be able to enjoy life, but is it government responsible to make better people? The answer to this question is not easy, â€Å"being better† is a biased topic in which each person has a different perception about â€Å"being better. â€Å"Better people† is not easy to delineate, people live under different standards founded on their own values or morals that are often compare with others views. However, government should not be responsible to make people better. Government must support individuality and autonomy, equally protecting all citizens human and civil rights; respecting individual decisions about personal matters taken according to own values. Government must support individuality and autonomy as an effort to make people responsible for their own actions. Personal autonomy refers to the ability to objectively self-enforce regulations. This concept is grounded on different perceptions involving moral obligation and responsibility. Citizens have a moral and ethical obligation when making personal decisions related to the type of people they want to be. The personal desire of becoming a better individual is a personal choice based on personal beliefs related to the integrity, honesty, kindness and morals; these standards are not created or regulated by the government. These philosophies are based on factors involving economic, social and emotional aspects that influence individual perception of the reality. It is government’s obligation to protect individuals but not to dictate them; as said it by former president Thomas Jefferson, â€Å"Man is not made for the State, but the State for man, and it derives its powers from the consent of the governed. † Government’s responsibility is not to make better people but to protect people’s human and civil rights letting them to decide what kind of people want to be. The equally protection of human and civil rights should be a priority for the government. Defending people’s rights implies the creation and enforcement of laws and regulation that should be followed by the citizens in order to keep the balance and peace of the society. These regulations should guarantee all citizens an equal opportunity to make ethical and responsible decisions regarding their personal objectives without affecting others rights. The government was reated by people to the people to work as a mediator reconciling and providing to the population with conventional solutions to the possible disagreements among the citizens of the society avoiding injustices and ruling with fairness; taking under consideration free will, the right to make personal decisions based on reason rather than instinct. Making a government responsible for personal choices promotes dependence; mutilating individuality and autonomy. It must be people’s responsibility to make the decision of being a better person and it is government obligation to respect personal desires and individual goals of the citizens. It is the people’s right to take the necessary actions to achieve a higher level in life. The right to be a better person is not a guarantee, it is a right and it must be protected by the law. The founding fathers considered the right to become a better individual to be important, living life as people choose, having the liberty to become the person that each individual wants to be based on their own values and morals. People must be free to choose their values and their means as well the actions needed to become the person they want. Although prohibitions and regulations can constrain people to please their desires if those wishes lack or moral obligation; government can interfere with individual goals if those goals somehow affect others people’s rights. Every human being has certain standards that are often compared with others in order to give a personal meaning to the word â€Å"better. The meaning of being a better person is predisposed; it can be based on different factors such as economic, emotional or social among others. In order to know if people is becoming better it is necessary to compare two different situations related to a specific matter. This comparison is influenced by personal preferences, conditions and desires clouded by assumptions created on experiences or previous knowledge. Therefore, government should not be responsible for making better people. The State is obligated to guarantee the individuality, autonomy and the safe to all citizens of its society as a whole; providing infrastructure and a nonviolent place that promotes an environment dedicated to maximize independence and autonomy; making its citizens to grow as human beings while equally protecting their individuals’ human and civil rights. It is people’s responsibility to become better individuals by making responsible choices based on own morals and principles without affecting others’ lives and understanding that personal beliefs ends where other individuals beliefs begins.

Sunday, October 27, 2019

The User Experience in Mobile Computing

The User Experience in Mobile Computing ABSTRACT Mobile phones have become a necessity for almost every person throughout the world. Cell phones have become almost a status symbol in addition to the convenience and security that comes from owning them. In this article, We would like to discuss the importance of the user experience and the user interface in Mobiles/Soft Wearables. 1INTRODUCTION In this paper, We would discuss the user experience/ user interface with mobiles/soft wearables in the past, current and future. We would also look at design approach to soft wearables, material explorations. At the end we would see the challenges or difficulties in mobile user experience. 2DISCUSSION Scientists have researched a lot regarding the user experience in Mobiles/Wearables. Early research in this field frequently encouraged people to share their devices to create a collective experience or reach a common goal. Most of this first-wave  research initially looked at the use of smartphones (and tablets) to study mobile collocated interactions. As a result, early mobile collocated interactions research tended to be device-centric. Nowadays, Computers have transitioned from being in a large room (e.g., ENIAC), to our desks (e.g., PCs), to a bag (e.g., laptops), and to our pockets (e.g., mobile phones). Wearable computers (e.g., the WIMM watch) have continued the trend towards ever-smaller computers, ones that can be worn on our wrists (e.g., Apple Watch) or other parts of the body (e.g., Google Glass, Microsoft HoloLens). While the first-wave of mobile collocated interactions seemed device-centric, this current second wave is user experience-centric. Such novel mobile collocated interactions may include clothing, accessories, prosthetics, and jewelry. One s uch example is Its About Time which explores extending smartwatch interactions to turn personal wearables into public displays. Adopting ideas of proxemics could allow for designers to better shape each individuals personal motivations and perceptions of their interactions with both devices and others, to better support their experiences. Soft wearables include clothing and textile-based When designed well, they leverage the cultural, sociological and material qualities of textiles, fashion and dress; diverse capabilities and meanings of the body; as well as the qualities and capabilities afforded by smart and programmable elements. When designing soft wearables a designer must consider a range of requirements that do not typically demand focus when designing products that are not worn, including: sensitivity to material detail; an eye for fit and comfort on bodies with diverse shapes and movement capabilities openness to a diversity of meanings that may be generated; as well as consideration of wearers intimate relations with technology. Soft wearables allow for greater scope within these requirements. Using smart textiles and soft electronic interfaces in wearables opens up the opportunity to engage with wearers senses in diverse and subtle ways. A knitted garment for example can deform and reform as the body moves and pushes against the fabric. When augmented with smart capabilities, such deformations may be used to sense engagement and trigger events. But, There are a number of technological challenges for designing user experience such as binding, security, spatial registration, heterogeneous platforms and sensors, non-touch interaction as well as development and runtime environments. In addition to these, there are social challenges such as privacy, social acceptability, social participation, social exclusion and social engagement. There are a number of Perceptual and Physiological challenges such as varying display resolutions, luminance, effective visual fidelities, visual interference, color or contrast in display overlap which can be experienced with body proximate ecosystems. 4 CONCLUSION Today, mobile application development technology is evolving at a very shocking pace. User experience is becoming an increasingly crucial feature when it comes to the digital landscape. It defines how the user feels and thinks about your product from his or her own perspective. It is about making something valuable, easy to use and effective for your target market. However, in a market where quality and performance always come before brand loyalty, creating a fluid user experience (UX) is key to the success of any mobile app development project. REFERENCES [1] Andrà ©s LuceroEmail author, James Clawson, Joel Fischer and SimonRobinson Mobile collocated interactions with wearables: past, present, and future Nov 2016 [2] Oscar TomicoEmail author and Danielle Wilde Soft, embodied, situated connected: enriching interactions with soft wearables June 2016 [3] Jens GrubertEmail author, Matthias Kranz and Aaron Quigley Challenges in mobile multi-device ecosystems Aug 2016