Natural Night Vision Essays -- Biology

Admit it, night vision is an ability that we would all enjoy having. Who would not want to be able to see the world at night without the use of fancy instrumentation, like night-vision goggles? Unfortunately, humans become colorblind at night because their eyes switch from normal daytime vision to a color-insensitive rod system. Unlike humans, a lot of other animals have the ability to see in the dark. This nocturnal ability is a major subject of research because scientists want to know what causes it, what methodology lies behind it, and what limitations there are. Alnut Kelber, Anna Balkenius, and Eric. J. Warrant studied the night-time vision of a nocturnal hawkmoth, Deilephila elpenor. They wanted to know if the hawkmoths can truly see colors at night, or if they are using other means to find the right kind of flowers to feed from. For example, humans cannot see colors at night and therefore have a harder time differentiating between objects using vision alone. However, a person could find food in a dark room using his or her other senses, such as smell or taste, or could rely on colorless vision to choose food based on its shape. The scientists tested a series of experiments to show that hawkmoths use color-vision at night, as opposed to reverting to their other senses like humans do. Deilephila elpenor moths were trained to associate a sugar reward with a color, either blue or yellow by feeding from colored artificial flowers at a light intensity equivalent to late dusk. Deilephilia Elpenor Moth The moths were tested (without a sugar reward) at five different light intensities ranging from mid-dusk to dim starlight, to see if they could pick the training color from eight different shades of gray... ...we have a limited field of vision, and we can’t see in the back of our head. Continuous Visual Stream humans only get one shot to allow their photoreceptors to see an image, the images come through the eyes into the brain in a constant stream and are lost almost immediately, not stored. Advantages brain power that could be used to store up images to help see color in the dark can instead be used to make a clearer, better-resolved picture Disadvantages humans need more light to see color Photoreceptor Types humans also have 3 types, but: red, blue, and green Advantages we have trichromatic vision, which helps us differentiate objects and appreciate aesthetically pleasing sights Disadvantages we can’t see in the UV spectrum, and there are other animals such as butterflies which have 4 or 5 different photoreceptor types and can see more colors than us

Individual Final Project Essay

When it comes to the topic of diversity and what is has taught me I really think of a few things. Diversity has really taught me a lot about myself as well as tolerance to others around me. Really there is nowhere in the world today that diversity is not present or has not had some sort of effect on our society as a whole. All in all I think that diversity really just means being different than others in various ways. I think if the United States never had any instances of diversity we would be a pretty boring and simple society. Many of our great minds of today as well as the past where very unique and diverse individuals. Without any type of diversity we would be exactly alike there would be nothing different about each other. The world would be plain and boring as well. I like to think that without any type of diversity the world would be without any type of color or texture as if we were in a 50’s TV show. We are different in race, gender, age, sexuality, religion and a wh ole lot of other things. There will be certain things that we have in common and some things that we don’t have in common. In order to understand someone I believe you need to get to know them better. You need to understand what makes them happy and what really works their nerves. There are so many cultures out here that we really don’t know anything about. It is good to learn about the different cultures that are out here. By learning from the different cultures we are able to see the things that we do that are in common with our culture and the things that are done differently from us. Some things that we do for fun might be something that they don’t approve of. Nowadays people take certain things for granted while in another culture they enjoy it and not abuse it. There are a lot of different things that I have found out about my race. As I was reading back over some of the chapters I see that â€Å"the marriage of a White person and an African American would have been illegal in 22 other states† back in the 1960’s. (Chapter 1 Racial and Ethnic Groups) That is something that I really did not know and was really shocked to find out as well. I did learn an interesting fact about African Americans however. It was interesting to lear n that not all African Americans were brought over here to the United States as slaves or that they were the only slaves. It is a common mistake made that America had only â€Å"Black† slaves. There were many Europeans sent here as indentured servants. They had to work off the trip to America and also some were sent here because of debts and had to work them off. Irish Immigrants were also thought of as lower than slaves. The Japanese and Chinese were both used as slaves and many lost their live building our railroad system. You also must remember there were Blacks who owned slaves. One of the largest Plantation houses in the South was owned by a Free Black Woman. Not all blacks were slaves it is just the way it has been portrayed in History books. As far as trends in the area of immigration I would have to say I agree with the info in the reading material. After looking over the reading material from Chapter 1 there is a pie chart of the population for the years 2010 and 2050. In the chart the prediction for the U.S. population for 2050 states that there will be more Hispanics than there was in the 2010 chart. There will be a decrease in the White Non-Hispanics and the African Americans stays about the same percentage. Although the United States is heavily populated I say that the Hispanics will have overpopulated many of the other races. The United States really has a lot to deal with in the area of diversity and its people. Discrimination is one of the major challenges that we will face because we can’t seem to get along and treat others like we are supposed to be or want to be treated ourselves. I think that the United States will be a lot better if we could all get along and really have a better understanding of the others around us and those who came before us. Like I stated earlier the United States was built on a premise that we are the ultimate dream and welcome people from all over the world. Hopefully maybe one day that will come true but that remains to be seen today and in the future years as well. Prejudice is another challenge that the United States faces due to the diversity of the people and those set in their ways. Stereotyping is another challenge that we face today as well as the past years as well. These things are in my opinion very much taught and passed down from generation to generation. All three of these challenges are serious and need to be stopped because they are all inappropriate in many ways and just plain mean and spiteful. There are plenty more challenges out here that we face on a day to day basis but we have to start somewhere. When it comes to having a diverse society I think there are really several benefits. There really are so many different benefits that we can have. Being that we are so diverse we will inherit a lot of things such as the different foods that all the different cultures have to offer. Each culture has something different than what the other cultures have. Each individual has something different to offer to our society. Being diverse is something special because we can each learn something new from one another. There are different dances, music; we all celebrate different holidays and a whole bunch of other things. The society that we live in has so much to offer and we are too blind to really see what is happening. At times I think the media does a good job of portraying people wrongly and it teaches us to stereotype them as well. We are so quick to judge others rather than getting to know them based on what we have seen or have heard from others. We really need to do a better job and find the best way to foster a good climate of acceptance for those around us and different than we are. It all starts with simply acting in a good civilized manner at all times. â€Å"Cultural pluralism is a term used when smaller groups within a larger society maintain their unique cultural identities, and their values and practices are accepted by the wider culture.† I think as long as we treat everyone they way that we want to be treated then we would be better off. It is really as simple as that and there is no better way to put it. We mainly need to learn to get along and stop all this bickering in addition to the other altercations that are currently going on in this world. The media can be a great to ol when it comes to teaching about diversity as well as a way to portray people in the wrong sense as well. The media perpetuates stereotyping and prejudice a lot sometimes whether it be on the radio or on the television set as well. An example of stereotyping would be portraying all black males as being in different gangs or some type of hoodlum. In Reality the percentage of blacks that are in gangs is not as high as told. In fact not all young black males are in a gang or even gang affiliated for that matter. Take the Treyvon Martin case for example. The thing was so blown out of proportion due to the fact he was a young black male walking around at night with a hoodie on. The media portrays this as a gang member and to some degree it could be the reason he was killed. The hysteria created simply caused Mr. Zimmerman to overreact thus causing him to shoot this teen and cause outrage in the black community. Usually when the television portrays blacks or even Hispanics for that matter it is usually a story about either murder or. You hardly see them advertise anything about a Caucasian doi ng anything unless it is some sort of celebrity or perhaps some weird random story taking place in Alabama or any of the southern states. You really have to do a search for them because I assume they don’t think it is important. It is so much prejudice going on out here in this world until it really doesn’t make any sense. I wish we could all get alone but sometimes that seems impossible. The media really needs to do a better job of providing a better sense of diversity and how we perceive others. I think that the media should help the viewers to understand that not everything you hear or see is really true. If there was a course for everyone to take to let them know that they need to investigate on what they hear or see. Television stations and radio stations need to start appreciating diversity. Diversity is beautiful and needs to be recognized more often. If it was not for diversity we would be all plain and boring. We as a country really need to do better when it comes to the topic of diversity. I wish that we could all get along and be treated as equals but that is simply not going to happen anytime soon. There are still a lot of prejudiced people out here in this world and sadly not a lot has changed over the years. I have had the displeasure of being around some people that were prejudice and it really makes me sad for them. To think that people are so single minded and set in their ways is pretty sad. I don’t really know how we as individuals and the United States work together to reduce prejudice but we need to start somewhere. I think classes such as cultural diversity are a good way to start but there is no way to make people think outside the box. We need to have more educational television shows that will increase the appreciation for diversity. We also need more television shows that can help us to reduce prejudice because it is a serious subject that needs to be addressed. I think when it comes to changing my ways or my behavior there is a few things I can do. I think that if I change my behavior to be more inclusive and pluralistic I would need to think about certain things before I act on them. By simply putting a little more thought into things can simply create a better outcome. I think that I need to get to know other people in different cultures and learn more about what they do and how they function. By getting to know other people in the other cultures will really help me to understand them rather judging them before actually knowing what they are about.

Drayton 61 Structure Essay

There are many different ways to approach the structure of a poem, a piece of fiction, a play. In what follows I’m going to make some suggestions about the structure of Michael Drayton’s poem beginning â€Å"Since there’s no help, come let us kiss and part,† a sonnet from his collection titled Idea, first published in 1593. It’s important for you to understand that there are many valuable and illuminating ways to talk about this poem’s structure, not any one, single, right way. That’s why I’m writing suggestions, not prescriptions. When I say â€Å"the structure† of Drayton’s poem, I mean not only how it’s put together but also the way it works. Learning how something is put together shows us what the parts are. Learning how those â€Å"put-together† parts work shows us the thing in action. And a short lyric poem like Drayton’s (any work of literature that we’re reading, for that matter) is a thing in action, a dynamic process. Here is Drayton’s poem. Since there’s no help, come let us kiss and part; Nay, I have done, you get no more of me, And I am glad, yea glad with all my heart That thus so cleanly I myself can free;4 Shake hands forever, cancel all our vows, And when we meet at any time again, Be it not seen in either of our brows That we one jot of love retain. 8 Now at the last gasp of love’s latest breath, When, his pulse failing, passion speechless lies, When faith is kneeling by his bed of death, And innocence is closing up his eyes, 12 Now if thou wouldst, when all have given him over, From death to life thou mightst him yet recover. Well, what are the parts of this poem? Words in lines. Specifically, words in lines which usually add up to ten syllables each. Words put together so that they make a rhythm as we say them, a sort of di-da di-da di-da di-da di-da rhythm, with emphasis usually on the â€Å"da† syllable, like this: And I am glad, yea glad with all my heart or this: And when we meet at any time again. And the poem is made up of lines whose end words rhyme (that is, chime together) in a certain pattern throughout the poem, like this: part / me / heart / free(abab)lines 1-4 vows /again / brows / retain (cdcd)lines 5-8 breath / lies / death / eyes (efef)lines 9-12 over / recover(gg)lines 13-14 This pattern creates groups of lines (they have technical English-teacher terms), which go together because their end-word rhymes link them together: lines 1-4=first quatrain lines 5-8=second quatrain  lines 9-12=third quatrain lines 13-14=final couplet The words in this poem are also organized grammatically, in several ways: sentences–the first (a cumulative sentence—check out the term in a handbook or do a Google search) consisting of the poem’s first and second quatrains and the second (a periodic sentence) consisting of the third quatrain and the final couplet; clauses–a bunc h; notice, for example, the first line of the poem– Since there’s no help, come let us kiss and part— a subordinate clause followed by a main clause in a combination showing a cause-and-effect relationship;  verbs—significant mood shifts within the poem (another technical English-teacher term—verbs come in â€Å"moods,† namely the indicative, subjunctive, or imperative, which, if you can’t recognize, you’d better get a grammar/composition handbook), with the imperative and indicative dominating the first eight lines and the indicative and subjunctive the last six (note especially â€Å"wouldst† and â€Å"mightst† in ll. 13-14); subjects—all personal pronouns in the first eight lines (â€Å"us,† â€Å"I,† â€Å"you,† â€Å"we†), nouns in the next four (â€Å"passion,† â€Å"faith,† â€Å"innocence†), and a return to pronouns in the final couplet (â€Å"thou ,† â€Å"all†); adverbs expressing time—â€Å"when† X 4, â€Å"Now† X 2, â€Å"again,† and â€Å"yet†; adjectives—there are very few: why Well, despite the fact that GRAMMAR IS REALITY, we probably should get off the grammar wagon for the time being. There are other ways to look at how words in a poem are organized. Consider the way they get sounded when you read them. Listen carefully as you say the first two quatrains of the poem: Since there’s no help, come let us kiss and part; Nay, I have done, you get no more of me, And I am glad, yea glad with all my heart That thus so cleanly I myself can free;4 Shake hands forever, cancel all our vows, And when we meet at any time again, Be it not seen in either of our brows That we one jot of love retain. 8 I’m hearing a lot of one-syllable words. The first three lines consist entirely of one-syllable words, and there are only seven two-syllable words in all of the eight lines. I’m also hearing a kind of clipped, short way of speaking in these lines. Partly this is due to (ALERT-ALERT: another technical term) alliteration, as in the hard â€Å"c† sounds—come, kiss, cleanly, can, Shake, cancel—and â€Å"t† sounds—let, part, get, heart, That, meet, time, it, not, That, jot, retain. Now listen to the way you’re sounding the words in the third quatrain: Now at the last gasp of love’s latest breath, When, his pulse failing, passion speechless lies, When faith is kneeling by his bed of death, And innocence is closing up his eyes 12 I’m hearing a lot more two- and even a three-syllable word now, especially in ll. 10-12. Also, I’m more aware of a kind of â€Å"breathiness† than I was when saying the first eight lines. Partly this is due to the fact that I’m saying words here that require more breath than one-syllable words. There’s another reason for the â€Å"breathiness,† and, yup, there’s a technical term for this, too, but let’s skip over it and listen to what’s causing this â€Å"breathiness. † What do you notice when you say these words: gasp, breath, pulse, failing, passion, faith, bed, death? Feel a little puff of breath coming out of your mouth, a kind of â€Å"uh,† after you say the initial consonant of the word? That’s what I’m getting. I think there’s another reason I’m feeling this â€Å"breathiness,† a reason not related to the sounds of words but to what they’re saying. The speaker in this poem is painting a picture in the third quatrain by using images. LOOK OUT (another technical term): â€Å"imagery† or â€Å"images† can refer to literal, descriptive pictures in a piece of writing, as well as to figurative language like (technical alert) similes, metaphors, personifications, etc. , or to both. In the present case, the speaker’s imagery is both literal and figurative. S/he’s creating a deathbed scene: there’s a â€Å"last gasp of . . . breath,† a â€Å"pulse failing,† a â€Å"bed of death,† even the â€Å"closing up† of the dying person’s eyes by an attendant. All this is vivid, literal imagery. But who’s dying? Someone named â€Å"love. † Who else is present in the scene? Persons named â€Å"passion,† â€Å"faith,† and â€Å"innocence† (in some printed versions of the poem these names are capitalized). These â€Å"persons† are abstract nouns that are being given the characteristics of humans—hence the term personification. So I’m getting both literal and figurative images, a double-whammy deathbed scene that strongly conveys the idea of the dying person’s final expiration. How does the imagery of the end of the poem compare with imagery at the beginning of the poem? I can’t see any figurative language at all in the first two quatrains, except for â€Å"you get no more of me† in l. 2, which suggests the idea of possession in a love relationship, and â€Å"Be it not seen in either of our brows† in l. 7, a (you got it) metonymy or figure of speech in which a part is substituted for the whole (brow for face). But for these exceptions, I can take more or less literally everything the speaker is saying. S/he and her/his partner are going to kiss and separate—that’s all that can be done. The speaker is finished with the partner, and s/he’s glad that s/he can make this separation so neatly. It’s simply a case of shaking hands goodbye, freeing each other of any obligation created by what the lovers might have said in the past (â€Å"I swear I’ll love you forever,† â€Å"There’ll never be another person in my life,† â€Å"You’re the center of my world,† etc. ), and making sure that, whenever they meet in the future, no bystander will be able to detect the slightest trace of their former love. I think it’s time to start asking how these put-together parts work in action, that is, to see what dynamic process is operating in the poem. If the structure of this poem is a dynamic process, then you ought to be able to see changes, differences, shifts, as you move through the poem. In fact, if you compare the beginning of the poem with the end, you can see major shifts. I’ve already noted some—for example, the change in verb moods from imperative and indicative in the first eight lines to indicative and subjunctive in the last six. Then there’s the difference in the sounds the words make and the style of speaking you can hear, from the direct, concise, controlled tone of ll. 1-8 to the breathy, drawn out speech of the last part of the poem, where the speaker creates a vivid picture of Love at the point of death. How do these grammatical and tonal differences work together to reinforce the changes you can hear as the speaker confronts his/her soon-to-be-ex partner? In the first part of the poem the speaker is giving orders to his/her partner, using imperative verbs (â€Å"come let us kiss and part,† â€Å"Shake hands,† â€Å"cancel,† â€Å"be it not seen†) and making statements s/he intends the partner to take as true and literal, using indicative verbs (â€Å"there’s no help,† â€Å"I have done,† â€Å"you get,† â€Å"I am glad,† â€Å"I .  can free†). Then there’s the alliteration of hard â€Å"c† and â€Å"t† sounds and the dominance of one-syllable words, creating a sense of directness. It’s almost as if the speaker is trying to maintain emotional contr ol of the situation, as if s/he needed to suppress feelings of regret over the breakup. You can even see this in the use of â€Å"you† in l. 2, a formal style of address in early modern English. (In a similar situation, why would you formally address your soon-to-be-ex? ) There is also an effort at matter-of-factness here, evident in the avoidance of figurative language. All this is accomplished in a cumulative sentence, where you get the main message at the beginning (we know we’re breaking up, so let’s get on with it). In the last part of the poem the speaker is painting a vivid picture of Love at the point of death, surrounded by mourning figures (those personifications) attending at the bedside, and maybe, if s/he were willing, the speaker’s partner. Note that indicative verbs are used in ll. 10-12 (in the subordinate â€Å"when† clauses), then subjunctive verbs in the final couplet (â€Å"if thou wouldst† and â€Å"mightst .. recover†). The important thing to know about the subjunctive mood here is that it expresses an action that might take place, not one that does take place. Note also that in this final couplet the speaker addresses his/her partner by using the informal, intimate form â€Å"thou† instead of the formal â€Å"you. † In addition to the figurative language and significant gr ammatical differences between the beginning of the poem and this part, you now get longer words and the breathiness I noted. It’s as if the speaker is encouraging his/her partner to imagine, to see, to feel what the death of their love is going to be like, complete with mourners and last gasps. This invitation to participate is clearly intended to have an emotional impact on the partner. The speaker is also feeling some emotion, I think. You can see this in something I haven’t spoken of before. It’s the shift from a regular di-da di-da rhythm in the first part of the poem to some pretty strong, off-beat rhythms in the last six lines. Look, for instance, at the beats in ll. 9-10 or l. 13. Something different is going on here, not the regular di-da di-da amble you’ve gotten used to. Why this shift? I think it may have to do with the emotion the speaker is starting to feel as s/he describes the deathbed scene. S/he is getting near the end of the poem, and if anything is going to happen other than shaking hands and saying goodbye, it had better happen soon. I’m sensing that emotions are getting much more noticeable. S/he even makes his/her partner the central figure, on whom love’s life or death depends: Now if thou wouldst, when all have given him over, From death to life thou mightst him yet recover. All this happens in a periodic sentence, where you get the main message at the end, here in the final couplet (it’s up to you dear, if you want to bring love back . . . ) Well, I could go on, but I won’t—not for much longer, anyway. I’ve been trying to show you that the closer you look at a piece of literature, the more things happen. Drayton’s poem—any good poem—is super dynamic. However, you can’t capture this dynamic quality just by taking a photograph or making a list of the poem’s parts. You’ve got to experience the dynamic quality of the poem in order to know its structure.

Equality of the Sexes: Elizabethan Era and Now

Equality of the Sexes: The Elizabethan Era and Now Equal rights have always been a major issue and dispute. Analysing the role of women in the Elizabethan Era, through Shakespeare’s representation in Romeo and Juliet, and comparing them to the role of women in the 21st century, will help to demonstrate that equality of the sexes has been achieved, and come a long way in the past 400 years. Three ways in which equality of the sexes has been achieved is the role of a married, and unmarried woman, and roles of women in society.Married women’s roles have changed significantly since the late 1500s. A dowry has been abolished when women get married. Their sole purpose of being has changed and is no longer to just provide and raise children and complete household tasks. They can now get a job and have rights in marriage and families much the same as men. In marriage, women had to have a child every two years, as childbearing was considered an honour even though it was potentia lly life threatening.Also in the late 1500s, women had to instantly obey their husbands and any other males in the family, and their punishment for not obeying was being beaten into submission. An example of this in Romeo and Juliet is when Juliet refuses to marry Paris, and Capulet calls her a â€Å"disobedient wretch† for not following (Act III, Sc. V, 160). In the 21st century, men can no longer legally chastise their wives and are not always considered the head of the marriage as they were in Shakespeare’s time.In Romeo and Juliet, Shakespeare has represented the roles of married women in the Elizabethan Era. In Act 1, Scene 1, Montague and Lady Montague arrive in the square where the fight is breaking out, Lady Montague tries to stop him, but has no control after attempting to hold him back, as she has no authority over him, he also demands that she give his sword to him in a very abrupt manner, â€Å"Give me my long sword, ho! † (Act I, Sc. I). Therefore, women’s roles in marriage have equalised over the past 400 years.The roles of unmarried women have also changed over the past four centuries. Unmarried women are now allowed to work, whereas the only alternative for unmarried women in Elizabethan times was domestic service, such as being a maid. Arranged marriages for unmarried women were very common in the Elizabethan period, as fathers wanted their daughters to marry somebody of a higher class to improve the family’s social status. Fathers liked to arrange a marriage as soon as sensibly possible, because unmarried women were looked upon with suspicion.In Romeo and Juliet, Lord Capulet arranges a deal with Paris about the marriage of Juliet when she was only 13. Capulet describes Juliet’s age, â€Å"†¦She hath not seen the change of fourteen years†¦ † (Act I, Sc. II, 9). Paris replies with, â€Å"Younger than she are happy mothers made,† (Act I, Sc. II, 12) which is representing the fact that women in the Elizabethan Era could be married and have children as young as 12. In a modern Western women’s world however, women no longer have arranged marriages and are allowed to choose their significant other.They are not looked upon with suspicion if they are unmarried, as it is very common in the 21st century, and women often don’t marry until around the age of 25 or older. In summary, an unmarried woman’s roles and rights have changed considerably since the Elizabethan period, and Shakespeare has conveyed an unmarried woman’s tradition through Romeo and Juliet. The roles of women in society have changed a sizeable amount since the late 1500s. In the Elizabethan period women had minor roles in society.They were raised to believe that they were inferior to men and that men were the leaders and women were the weaker sex. Shakespeare has represented women being the ‘weaker sex’ through a conversation between Gregory and Sampson, when Sampson states, â€Å"†¦ and therefore women, being the weaker vessels, are ever thrust to the wall†¦Ã¢â‚¬  (Act I, Sc. I, 20). Women were not allowed to go to school, but the wealthy were allowed to have private tutors, so they were highly educated, but the poorer families couldn’t get any education easily.They were not allowed to get jobs, and domestic service was their only choice. An example of this is the Nurse in Romeo and Juliet. In the 21st century however, women have a very significant role in society, with many even being political leaders and in important professions, such as lawyers, doctors, teachers and scientists. They also have political and rights in society the same as men. Therefore, a woman’s role in society has changed and equalised over the past 400 years.Since the Elizabethan Era, an unmarried woman's role, women's roles in society and their roles in marriage have changed significantly. Equality of the sexes has been achieved and com e a long way over the past 400 years. It is clear that this is true, through analysing an Elizabethan woman’s role and their portrayal in Shakespeare’s Romeo and Juliet, and comparing them to a 21st century woman’s rights and roles in marriage, society and being single or unmarried. Women’s rights have gradually equalised over the years, and someday, possibly, women will take over the world.

Anabolic Steroids Essay Example | Topics and Well Written Essays - 1250 words

Anabolic Steroids - Essay Example While some athletes like Michael Johnson, a sprinter who won a couple of gold medals at the 1996 Atlanta Olympics, love pressure and enjoy it, others like Martina Novratilova, a Wimbledon champion find it difficult to handle pressure (The Creative Athelete, n.d.). Pressure arises because of the desire to win, to meet the expectations of the spectators and sponsors and also to remain in sports. It is because of the pressure to perform that some sportsmen resort to other methods of building their strength and endurance, mainly drugs. The most commonly used drugs in sports are erthropoietin and anabolic steroids. Drug associations all over the world have banned these drugs and intake of these drugs in any form amounts to cheating. These drugs can be detected easily by various modern tests. This article gives a crisp purview about anabolic steroids. Young athletes who aspire to become great heroes must know about the disadvantages of these drugs so that they dont take the easier route to success. Anabolic steroids are a class of synthetic steroid hormones that are related to testosterone. When administered into the body, they cause many physiological effects which are mainly anabolic in nature. The effects include increased synthesis of protein and increased appetite. Increased protein synthesis results in increased muscle mass and strength and increased bone growth. Anabolic steroids also have virilising androgenic properties and thus can cause increase in masculine features like growth of vocal cords and body hair. It is for these reasons that these drugs are popularly known as anabolic-androgenic steroids or AAS. Due to the muscle building properties of these drugs, there is a tendency for sportsmen and body builders to take them. Worldwide, most of the sports bodies have banned the usage of these drugs and intake of these hormones is considered illegal and called doping. Medically, anabolic steroids have an important role in the treatment of osteoporosis,

The expert system of Knowledge Management Assignment - 1

The expert system of Knowledge Management - Assignment Example First, they are prone to human errors, the people who compile the information may not have been accurate in that field, and this means that application of that knowledge will tend to be misleading. For this case, human beings are designing expert based technologies in different fields. This technology is expected to provide intelligence to human beings in solving challenges in the different areas. As a consultant I would advocate for the use of experts systems over knowledge based systems. The process of solving a problem starts with application of facts which are known and proceeding to complex ones in the specific field (Maher, 1986). This path of search has to move from the real problem to the solution or objective in question. The expert system is however challenged by a few rules that govern it. First, it should be understood that the experts system has to rely on human knowledge. The system acquires this knowledge though practice over time. Each information is fed into the syst em to make it effective. Human beings have the mandate of collecting the small pieces of information and accumulating it in a knowledge base. Expert systems may not be resourceful in reasoning about the processes which are involved. This implies that for an expert system to be effective, a human expert must feed information into it (Szakwani, 2007). One of the main advantages with an expert system is that it is able to make solutions to problems that would rather have involved a specialized expert, who in this case is a human being.

Do you think that theories of authorship are incompatible with the Essay

Do you think that theories of authorship are incompatible with the industrial context of film production - Essay Example The auteur theory is one of the most important theories of authorship. The term, politque des auteurs was coined by Francois Truffaut, who realized that American Directors often worked within strictly circumscribed parameters in reference to the kinds of films and the scripts they could direct, since these were often predetermined and allowed the directors little room to experiment with their own ideas (Keller 1930). The notion of the Director being the true author of a film first emerged through the views of Andrew Sarris on the distinctive nature of a particular director’s work. According to Sarris, Hitchcock was â€Å"great† and Welles was classed as â€Å"brilliant†, based on the view that over the course of preparation of several films, a director may reveal certain recurring characteristics of styles or themes, which are like his or her personal signature or stamp upon the film, identifying it unmistakably as their product (Sarris, 1979:650-665), irrespective of the collective nature of film production. It may be argued that American cinema in earlier decades was circumscribed by the industrial context of production and the concentration of power in the hands of studio top executives. The power wielded by the writers and directors of the film was considerably less than that wielded by studio heads and their creative control over the film much lower. Yet, despite these restrictions, some directors such as Hitchcock were able to achieve a personal style that was uniquely their own. In particular, where some directors such as Orson Welles and Jean Luc Godard are concerned, some recurring themes may occur in all their works, or their work may demonstrate a particular worldview or personal vision that becomes evident through their work. They bear the unmistakable personal imprint of the author, despite the plethora of external market and commodity pressures that may fashion the final products. For example, in the works of Godard, the