UAE after Islam an Example by

UAE after Islam One of the fundamental highlights of United Arab Emirates is its ownership of an extremely key area which encourages its exchange and business. Inside the nation, the individuals are occupied with a few occupations, for example, exchanging, transportation, angling and chasing. This a significant piece of their common life which, beside specific turns of events, stayed more and less as similar occupations the individuals in the nation are locked in with as the years progressed. Nonetheless, dissimilar to occupation which remained moderately stable as the years progressed, there is a significant part of UAEs culture that experienced radical changes through time. This is in the region of religion. Such changes might be isolated between UAE before Islam and UAE under Islamic religion. Need paper test on UAE after Islam subject? We will compose a custom paper test explicitly for you Continue Indeed, even before the appearance of Islam, the individuals in UAE have a created religion. It might be what individuals at present consider as crude, yet it is in any case a created and composed religion. They have a divinity as a snake. A sanctuary is worked for the love. This is a decent proof of the level of human advancement of these snake admirers as respects their religion. They had the option to make a holy area where love of their god will be performed. In addition, the presence such sanctuary infers the presence of set up ceremonies, customs and conventions of a strict sort that are seen by them. Sanctuaries are likewise normally used to impart to the god, in this manner suggesting some type of supplication technique among the individuals. Beside the sanctuary and love, they likewise have other built up standards and conventions, for example, in internments. This carries us to the second degree of investigation, which is the assessment of the status of UAE after the appearance Islam. Islam supplanted the old religion rehearsed by individuals in UAE. It was encouraged by one of the significant highlights that have portrayed UAE for an exceptionally prolonged stretch of time, its points of interest as respects exchange and trade. Around then, the Gulf, where UAE is a piece of, got one of the significant business habitats just as the business of the boats. This encouraged the spreading of Islam through the assistance of Gulf dealers. The teaching of Muslim confidence is portrayed not by a serene mix of individuals to the religion. Rather, the introduction of Islam in the nation is encouraged by blood and misfortune. The way to Islam that UAE and different nations in the locale needed to follow was cleared with fights and successes. Indeed, even from the earliest starting point, Islam was first brought inside the nation by Amer canister el Aass by battling all the intruders from the area of Arabian Gulf after the demise of prophet Mohammed (PBUH). In the Gulf, this was trailed by different fights, some of which are described by triumphs, the others, by misfortunes. Instances of the triumphs incorporate the triumph of the Ottoman ruler, Mohammed Al-Fatih (the Conqueror) to victory Constantinople, while instances of the misfortunes remember the finish of the realm of Granada for Andalusia in 1492 and end of the Arabian marine authority over the Arabian Gulf, Oman Sea, and a piece of the Indian Ocean during the fifte enth Century. A large number of these fights brought about numerous passings and extraordinary loss of properties. Among the adversaries against whom the need to safeguard emerged were Portugal, Holland, France, and Britain. The political atmosphere after the presentation of Islam was additionally influenced by the arrangement of collusions and innate associations that are regularly framed by administering families. Also, the approaches of government and individuals have changed. One significant outcome of the improvements in the Arab locale, including UAE, is their impacts on the issues individuals hold dear. Progress and freedom have become significant calls for Arab residents and consideration was given to the craving to accomplish present day instruction, social modernisation and media receptiveness. The Arab improvement, particularly after Islam, effectsly affects its various parts. A significant conversation as respects these impacts will be the advancement of Dubai Emirates, which is a fundamental piece of United Arab Emirates. It is considered as the fundamental bit of the Gulf and like UAE, has accomplished a significant situation in exchange because of its key area. It has likewise become a fundamental exchanging the Gulf owing somewhat to the achievement of its pearl-production business. Be that as it may, as talked about above, UAE has become observer to the intersection of societies because of its vital area close to waterways utilized for exchange and transportation, thus have its parts. The outcome is the blending of expressions of the human experience and culture of its parts, including the Dubai Emirates in this way losing their qualification among one another. Reference David C King 'Joined Arab Emirates' New York : Marshall Cavendish Benchmark, 2008. King ibn Muhammad al-Qasimi, Ruler of ShaI riqah'Selected talks' Sharjah, United Arab Emirates : Al Qasimi Publications, 2016.

Sociology of corrections essays

Humanism of adjustments articles Commonly, there are four defenses for discipline that are as yet utilized today in the United States: Retribution, discouragement, incapication, and recovery. There are numerous methods of arriving at these supports other than jail today, which are made to help the present issues in the criminal equity framework. There are a wide range of perspectives about the adequacy of these avocations, and with the entirety of the issues in the criminal equity framework numerous inquiries are left unanswered today, such as...... How well do the real factors of the restorative endeavor agree with these defenses of discipline Reality in this angle for the most part implies the pace of recidivism for a given wrongdoer. As per Marquart and Sorensen, It might be conceivable to control certain gross highlights of the current, conceptional jail framework, for example, length of sentence and level of security-so as to influence these recidivism rates. (Correctional Contexts, Roxbury Publishing organization, 1997, pg. 299 ) The recidivism rates for some random wrongdoer rely on a great deal of factors, one of which being, season of sentence. One unforgiving truth of the remedial undertaking is that most of the restorative establishments in the United States today are packed. A 1992 study said that, there are 3,500 area imprisons in the United States today, and there are 400,000 prisoners occupying them. ( Class conversation, September 20 ) This makes time of sentence hard to be reasonable about when there is no space to house a guilty party, regardless of whether he deserves it. Considering what we think about redresses, how effective would we say we are in accomplishing these objectives? Which should society use requital, prevention, weakening, or restoration? Avocations for explicit authorizations cover impressively. A term of detainment might be insightfully supported by its essential objective of retaliation yet in addition serve the auxiliary elements of deterren ... <!

37% COLUMBIA UNIVERSITY - SIPA Admissions Blog

37% COLUMBIA UNIVERSITY - SIPA Admissions Blog Early January is always a busy time in our office. I know many applicants are anxiously awaiting news about the processing of documents and I thought I would provide some insight into what we are doing right now to make sure files get ready for reading. I will start with a statistic: 37% of the people who submitted applications for fall 2009 did so in the five days prior to the admission deadline. There is no problem with submitting an application anytime prior to the deadline, but here are some insights into how the process works. It can take us anywhere from three to five days to print an application once it has been submitted. Once an application has been printed a file must be created and then the matching process starts. The matching process involves combing through all of the mail we have received and documents that have been uploaded to our site and then printed. I would hazard a guess and say that we process well over 75,000 pieces of paper each application season. We have letters of recommendation, transcripts, test scores . . . well, you are well familiar with what we ask for at this point in time. I hope these numbers give you a picture of the process in our office. If you submitted an application slightly before the deadline, it might be a few weeks before we are able to complete the matching process. If you submitted an application well before the deadline the same may still apply. Even if you have submitted an application and several documents well before the deadline, the final matching process can take time. Stayed tuned and keep up-to-date with the progress of your application on the application Web site.   When the Web site indicates that all of your documents have been tracked into the system this means your application has been sent to the Committee for review.

Teen s Self Esteem And Body Image - 1868 Words

Many teenagers suffer from low self-esteem and an unhealthy body image all around the world and the main cause of this epidemic is social media. On average, teenagers between ages 8-18 spend 10 hours and 45 minutes a day on social networking, with Facebook and Twitter being the most used sites among them (Lepi, 2013). But the question is why would any teen want to look at pictures of their peers who look camera ‘perfect’ 24/7 to only lower their self-esteem and how they feel about themselves? Many teens tend to compare themselves negatively to a picture or ‘selfie’ they see on social media causing their subconscious to think negative thoughts such as ‘I’m fat’ or ‘I’m ugly’ which increases the chance of them developing a severe eating disorder including anorexia nervosa or they might self-harm themselves. Friends and family photos have shown to have more of an impact then celebrity photos do as they are known contacts to them. Through this analysis it will be shown how teen’s self-esteem and their body image can be lower by idealized images of human perfection on social media sites. A person, especially teenagers, self-esteem and body image is easily lowered through social media, but what is self-esteem and body image? Self-esteem can be defined in many different ways with no specific meaning to it. One way to define self-esteem would be that it is a person’s own opinion of themselves. A healthy self-esteem is based on how accurately someone assesses themselves and thatShow MoreRelatedThe Self Image Of Young Adults1396 Words   |  6 PagesFor many, many decades Americans have suffered from self-image because of inner conflicts causing very low self-esteem issues. Many of these conflicting identity issues play into these severe inflictions with one s self. Teens and young adults have a troubled existence of feeling incompetent, unloved, unworthy and leaving them unable to fit into the crowd because of their body image leaving an imprint of a certain way to look. As Early as age five, children have been brainwashed with secular televisionRead MoreSocial N orms Of A Female s Beauty And Body Image1234 Words   |  5 Pageseat the damn red velvet cupcake.† – Emma Stone. The world is rapidly changing in the world of women. Even over the last decade, the role and social norms of a female has changed substantially. With that said, societies standards of a women s beauty and body image has a direct effect on teenage girls, leading many to develop eating disorders such as anorexia. There are two main types of eating disorders: anorexia nervosa and bulimia nervosa. Both of these types are characterized as a major concernRead MoreThe Influence Of Media Reporting On Society s Perception Of Beauty1730 Words   |  7 PagesIt is evident that over the last decade the media has created an image that is unrealistic and unattainable for teenage girls. As such, based upon a macro perspective, the societal roles, status and expectations of young women have been impacted negatively. This paper will analyze how the combination of media reporting, socioeconomics and sociocultural factors contribute to the development of eating disorders as well as how society s perception of beauty has been distorted. This paper will furtherRead MoreThe Media And Its Effects On Teen And Young Undeveloped Brains1237 Words   |  5 PagesThe advertising business views teenagers in society as a viable market section, due to their immature understanding of the media and its dazzling impact o n teen and young undeveloped brains. The media is progressively specializing in children and adolescents to captivate with advertisements. according to market research corporations, teenagers are vital to marketers because they can pay a considerable open income, spend family cash easily, and they are easily able to influence their families to spendRead MoreAmerican Teen Cosmetic And Plastic Surgery1432 Words   |  6 Pages American Teen Cosmetic and Plastic Surgery Plastic and cosmetic surgeries have become a persisting issue in The United States, with the steady advancement of social media and technology being exposed to teens, many are falling victims to the country’s perception of standard beauty and resorting towards surgical procedures features that are not considered to be attractive among the general public. The United States makes it very easy for teens to proceed with aesthetic surgicalRead MoreWomen s Impact On Young Girls And Adult Women1438 Words   |  6 Pagespeople think that having insecurities is just a phase that every young teen goes through that will eventually turn into confidence, but that isn’t always the case. Many women struggle daily with the way their appearances and even try to seek for approval as a way to boost their confidence. In today’s society, majority of young adults especially women are constantly on social media, looking through photos of women with the perfect body shapes and having the ideal life. But in reality, most of these womenRead MoreCosmetic Surgery : Becoming More Common817 Words   |  4 Pagesmore and more teens are trying to look like the latest celebrities. Celebrities like Kim Kardashian, and Kylie Jenner are making cosmetic surgery the â€Å"It† thing. Cosmetic surgery should not be given to teens. Cosmetic surgery is risky and should not be used as a quick fix for self-esteem and body image. Cosmetic surgery is the procedure of enhancing the patient’s appearance. Teens seeking cosmetic surgery is becoming more common. There are certain surgeries that are common in teens that get cosmeticRead MoreSocial Media And Its Effects On Society Essay1605 Words   |  7 Pagesthe duration of time, I have noticed the great deal of power that media has influenced on how women ought to appear. The relationship between social media and its users is a high effect on people and causes many problems. We are constantly thrown images of women and men to categorize what is eye catching. It has been clear that social media has blossomed in the last few decades to only deliver us with messages. Social media is applying to us, that looking more like the Kardashians and less like ourselvesRead MoreAnalysis Of Snow White And The Seven Dwarfs 1179 Words   |  5 Pageswith the media and they are constantly attacked by the messages of the media. A superior message the media is depicting is ultra-thin as a reference point of beauty. Everyday an abundance of women are bombarded with the media s concept and interpretation of the flawless body. The photos being represented in popular magazines typically issued for women all over the country are impractical and illogical. According to Adam Cloe, an author at Live Strong, the average American woman is about 166.2 poundsRead MoreSocial Media Allows People To Share Pictures And Ideas1057 Words   |  5 Pagesthat are so heavily impacted by the media can link their self-worth to their l ooks. I used scholarly articles all relating to how social media affects body image to decide what my view point was. After research, we can conclude that social media has a negative effect on a woman’s body image. The media consumption can lead to dissatisfaction and even have a correlation with eating disorders. â€Å"Social Media effects on Young Women’s Body Image Concerns: Theoretical Perspectives and an Agenda for Research†

Taking a Look at Breast Cancer - 1052 Words

Nearly one in eight women in the United States will develop breast cancer at some point in her or his life (Breast Cancer Health Center, 2014). I am sure that almost everyone has been affected by breast cancer in one way or another, whether they had it or know someone who has had it. My mom’s aunt had breast cancer, as did my dad’s mother. My great-aunt luckily caught it early on and had it taken care of. Unfortunately, my grandmother caught it too late; it had spread all over her body and eventually ended up being the cause of her death. It is important to know the risk factors of developing breast cancer and what you can do to help prevent it, as well as knowing treatment options if you or someone you know is diagnosed with it. Breast cancer develops in the breast tissue. It develops primarily in the milk ducts or glands, and can travel to other parts of the body. Even if it has traveled elsewhere, it is still called breast cancer. If it has spread, it will usually be referred to as metastatic or advanced breast cancer (Breast Cancer Health Center, 2014). Although breast cancer can occur in both males and females, it is a lot more common in females. In fact, men account for just one percent of all breast cancer cases. Breast cancer is the most common cancer among women. In addition, it is the second leading cause of cancer deaths only being preceded by lung cancer. Early detection of breast cancer can be lifesaving. If breast cancer is detected early on, it isShow MoreRelatedTaking a Look at Breast Cancer1760 Words   |  7 PagesAccording to the Cancer Facts and Figures 2014 by the American Cancer Society, an estimated number of 232,670 women in the United States will be diagnosed with breast cancer, and about 2,360 new cases are expected in men. Breast cancer will possibly cause death to more than 40,000 female patients and 400 male patients in 2014. Excluding skin cancer, breast cancer is the most common cancer that American women are diagnosed with. Additionally, breast cancer ranks second in the most deadly cancers among wo menRead MoreTaking a Look at Breast Cancer1758 Words   |  7 PagesIntroduction Breast cancer is the most common cause of cancer-related death among females in the world. It is known for â€Å"have both a genetic and non-genetic etiology† (Milne et al., 2010). It involves a combination of several factors- such as â€Å"genetic, environmental and behavioral risk factors†- that are unique to each individual (Nickels et al., 2013). This type of cancer is represented by a malignant tumor manifested in breast cells such as the line duct and line lobules cells, just to name a fewRead MoreTaking a Look at Breast Cancer955 Words   |  4 PagesBreast cancer is the second leading cause of death in women in the United States, after lung cancer. Every year, millions of women over the age of 40 go in for a routine mammogram to help prevent terminal breast cancer by early prognosis. While some very fortunate women will never actually be diagnosed with this cancer, they still undergo this medical test routinely. However, for every eight women there is one th at will be diagnosed with some form of breast cancer in their life. It seems as thoughRead MoreTaking a Look at Breast Cancer718 Words   |  3 Pagesasked her sister what was wrong. Elaine tried to ignore it and changed the subject. But Tina was worried and took her to the emergency room where the E.R. doctor diagnosed her with Stage 4 breast cancer. Since Elaine rarely went to doctors or got any checkups, she suffered from a late detection of breast cancer due to her fear of doctors. While visiting my family in New York for winter vacation 2011, I noticed that Elaine’s weight was dropping and her clothes were not as secure as they once were.Read MoreTaking a Look for Breast Cancer1083 Words   |  4 Pagesdiagnose for breast cancer is a regular self-check for changes in the chest or breast area. On finding a lump or cyst under the skin, it is ideal to visit a GP for confirmation although; most lumps or cysts are normal or non-cancerous. On confirmation of the presence of breast cancer, a patient would be further examined to find out the stage of cancer and what treatments would be ideal for them. This further testing includes a variety of techniques used to scan a suspected breast cancer such as MammogramRead MoreBreast Cancer : A Serious Condition1553 Words   |  7 PagesDestiny Myers BBH 411W.004 Prof. Gyekis 2/18/16 Breast Cancer Breast cancer is a serious condition and takes many people s lives each and every year. It accounts for at least 18.2% of cancer deaths worldwide.1 In society today, women are more focused on what appeals to men, rather than worrying about their own health. â€Å"If only women paid as much attention to their breast as men do† is promoted by National Breast Cancer Foundation. 2 The message that I took from this PSA is the notion that womenRead MoreBreast Cancer; Saving the Girls 959 Words   |  4 PagesBreast cancer is the second most prominent cause of cancer deaths in women. About 1 in 8 American women living in the U.S. will be diagnosed with invasive breast cancer sometime during the course of their life. About 39,620 of those women will die from it. â€Å"Breast cancer occurs when cells in the breast divide and grow without their normal control† (Komen). There are two main types of breast cancer. Ductal carcinoma, the most common type which starts in the tubes that transport milk from the breastRead MoreBreast Cancer Prevention and Education Essay1695 Words   |  7 PagesAccording to the American Cancer Society, â€Å"Breast cancer is the common disease of women in the United States, other than skin cancer.† After lung cancer, it is the leading secondary cause of cancer death in women. It helps to have some basic facts about the normal makeup of the breasts to understand breast cancer. In the past, this disease was one of the most feared forms of cancer due to its fatality rate and because complete recovery often required breast removal. The best way to fight this diseaseRead MoreThe Significance Of Breast Cancer1022 Words   |  5 PagesThe Importance of Breast Cancer Breast cancer is a serious disease that takes place in the cells of the breast. It is detected in many things, such as finding a lump or a change in how the breast looks. It is important to know how breast cancer works and the many parts that contribute to the knowledge of the disease. Famous actress Angelina Jolie brought breast cancer into the spotlight when she decided to get a double mastectomy. In the article â€Å"The Angelina Effect† that came from Times magazineRead MoreBreast Cancer That Develops From Breast Tissue Essay1049 Words   |  5 PagesBreast cancer that develops from breast tissue. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, fluid coming from the nipple, or a red scaly patch of skin. In those with distant spread of the disease, there may be bone pain, swollen lymph nodes, shortness of breath, or yellow skin. Risk factors for developing breast cancer include: female sex, obesity, lack of physical exercise, drinking alcohol, hormone replacement therapy during menopause

A Game of Thrones Chapter Thirty-five Free Essays

Eddard He found Littlefinger in the brothel’s common room, chatting amiably with a tall, elegant woman who wore a feathered gown over skin as black as ink. By the hearth, Heward and a buxom wench were playing at forfeits. From the look of it, he’d lost his belt, his cloak, his mail shirt, and his right boot so far, while the girl had been forced to unbutton her shift to the waist. We will write a custom essay sample on A Game of Thrones Chapter Thirty-five or any similar topic only for you Order Now Jory Cassel stood beside a rain-streaked window with a wry smile on his face, watching Heward turn over tiles and enjoying the view. Ned paused at the foot of the stair and pulled on his gloves. â€Å"It’s time we took our leave. My business here is done.† Heward lurched to his feet, hurriedly gathering up his things. â€Å"As you will, my lord,† Jory said. â€Å"I’ll help Wyl bring round the horses.† He strode to the door. Littlefinger took his time saying his farewells. He kissed the black woman’s hand, whispered some joke that made her laugh aloud, and sauntered over to Ned. â€Å"Your business,† he said lightly, â€Å"or Robert’s? They say the Hand dreams the king’s dreams, speaks with the king’s voice, and rules with the king’s sword. Does that also mean you fuck with the king’s—† â€Å"Lord Baelish,† Ned interrupted, â€Å"you presume too much. I am not ungrateful for your help. It might have taken us years to find this brothel without you. That does not mean I intend to endure your mockery. And I am no longer the King’s Hand.† â€Å"The direwolf must be a prickly beast,† said Littlefinger with a sharp twist of his mouth. A warm rain was pelting down from a starless black sky as they walked to the stables. Ned drew up the hood of his cloak. Jory brought out his horse. Young Wyl came right behind him, leading Littlefinger’s mare with one hand while the other fumbled with his belt and the lacings of his trousers. A barefoot whore leaned out of the stable door, giggling at him. â€Å"Will we be going back to the castle now, my lord?† Jory asked. Ned nodded and swung into the saddle. Littlefinger mounted up beside him. Jory and the others followed. â€Å"Chataya runs a choice establishment,† Littlefinger said as they rode. â€Å"I’ve half a mind to buy it. Brothels are a much sounder investment than ships, I’ve found. Whores seldom sink, and when they are boarded by pirates, why, the pirates pay good coin like everyone else.† Lord Petyr chuckled at his own wit. Ned let him prattle on. After a time, he quieted and they rode in silence. The streets of King’s Landing were dark and deserted. The rain had driven everyone under their roofs. It beat down on Ned’s head, warm as blood and relentless as old guilts. Fat drops of water ran down his face. â€Å"Robert will never keep to one bed,† Lyanna had told him at Winterfell, on the night long ago when their father had promised her hand to the young Lord of Storm’s End. â€Å"I hear he has gotten a child on some girl in the Vale.† Ned had held the babe in his arms; he could scarcely deny her, nor would he lie to his sister, but he had assured her that what Robert did before their betrothal was of no matter, that he was a good man and true who would love her with all his heart. Lyanna had only smiled. â€Å"Love is sweet, dearest Ned, but it cannot change a man’s nature.† The girl had been so young Ned had not dared to ask her age. No doubt she’d been a virgin; the better brothels could always find a virgin, if the purse was fat enough. She had light red hair and a powdering of freckles across the bridge of her nose, and when she slipped free a breast to give her nipple to the babe, he saw that her bosom was freckled as well. â€Å"I named her Barra,† she said as the child nursed. â€Å"She looks so like him, does she not, milord? She has his nose, and his hair . . . â€Å" â€Å"She does.† Eddard Stark had touched the baby’s fine, dark hair. It flowed through his fingers like black silk. Robert’s firstborn had had the same fine hair, he seemed to recall. â€Å"Tell him that when you see him, milord, as it . . . as it please you. Tell him how beautiful she is.† â€Å"I will,† Ned had promised her. That was his curse. Robert would swear undying love and forget them before evenfall, but Ned Stark kept his vows. He thought of the promises he’d made Lyanna as she lay dying, and the price he’d paid to keep them. â€Å"And tell him I’ve not been with no one else. I swear it, milord, by the old gods and new. Chataya said I could have half a year, for the baby, and for hoping he’d come back. So you’ll tell him I’m waiting, won’t you? I don’t want no jewels or nothing, just him. He was always good to me, truly.† Good to you, Ned thought hollowly. â€Å"I will tell him, child, and I promise you, Barra shall not go wanting.† She had smiled then, a smile so tremulous and sweet that it cut the heart out of him. Riding through the rainy night, Ned saw Jon Snow’s face in front of him, so like a younger version of his own. If the gods frowned so on bastards, he thought dully, why did they fill men with such lusts? â€Å"Lord Baelish, what do you know of Robert’s bastards?† â€Å"Well, he has more than you, for a start.† â€Å"How many?† Littlefinger shrugged. Rivulets of moisture twisted down the back of his cloak. â€Å"Does it matter? If you bed enough women, some will give you presents, and His Grace has never been shy on that count. I know he’s acknowledged that boy at Storm’s End, the one he fathered the night Lord Stannis wed. He could hardly do otherwise. The mother was a Florent, niece to the Lady Selyse, one of her bedmaids. Renly says that Robert carried the girl upstairs during the feast, and broke in the wedding bed while Stannis and his bride were still dancing. Lord Stannis seemed to think that was a blot on the honor of his wife’s House, so when the boy was born, he shipped him off to Renly.† He gave Ned a sideways glance. â€Å"I’ve also heard whispers that Robert got a pair of twins on a serving wench at Casterly Rock, three years ago when he went west for Lord Tywin’s tourney. Cersei had the babes killed, and sold the mother to a passing slaver. Too much a n affront to Lannister pride, that close to home.† Ned Stark grimaced. Ugly tales like that were told of every great lord in the realm. He could believe it of Cersei Lannister readily enough . . . but would the king stand by and let it happen? The Robert he had known would not have, but the Robert he had known had never been so practiced at shutting his eyes to things he did not wish to see. â€Å"Why would Jon Arryn take a sudden interest in the king’s baseborn children?† The short man gave a sodden shrug. â€Å"He was the King’s Hand. Doubtless Robert asked him to see that they were provided for.† Ned was soaked through to the bone, and his soul had grown cold. â€Å"It had to be more than that, or why kill him?† Littlefinger shook the rain from his hair and laughed. â€Å"Now I see. Lord Arryn learned that His Grace had filled the bellies of some whores and fishwives, and for that he had to be silenced. Small wonder. Allow a man like that to live, and next he’s like to blurt out that the sun rises in the east.† There was no answer Ned Stark could give to that but a frown. For the first time in years, he found himself remembering Rhaegar Targaryen. He wondered if Rhaegar had frequented brothels; somehow he thought not. The rain was falling harder now, stinging the eyes and drumming against the ground. Rivers of black water were running down the hill when Jory called out, â€Å"My lord,† his voice hoarse with alarm. And in an instant, the street was full of soldiers. Ned glimpsed ringmail over leather, gauntlets and greaves, steel helms with golden lions on the crests. Their cloaks clung to their backs, sodden with rain. He had no time to count, but there were ten at least, a line of them, on foot, blocking the street, with longswords and iron-tipped spears. â€Å"Behind!† he heard Wyl cry, and when he turned his horse, there were more in back of them, cutting off their retreat. Jory’s sword came singing from its scabbard. â€Å"Make way or die!† â€Å"The wolves are howling,† their leader said. Ned could see rain running down his face. â€Å"Such a small pack, though.† Littlefinger walked his horse forward, step by careful step. â€Å"What is the meaning of this? This is the Hand of the King.† â€Å"He was the Hand of the King.† The mud muffled the hooves of the blood bay stallion. The line parted before him. On a golden breastplate, the lion of Lannister roared its defiance. â€Å"Now, if truth be told, I’m not sure what he is.† â€Å"Lannister, this is madness,† Littlefinger said. â€Å"Let us pass. We are expected back at the castle. What do you think you’re doing?† â€Å"He knows what he’s doing,† Ned said calmly. Jaime Lannister smiled. â€Å"Quite true. I’m looking for my brother. You remember my brother, don’t you, Lord Stark? He was with us at Winterfell. Fair-haired, mismatched eyes, sharp of tongue. A short man.† â€Å"I remember him well,† Ned replied. â€Å"It would seem he has met some trouble on the road. My lord father is quite vexed. You would not perchance have any notion of who might have wished my brother ill, would you?† â€Å"Your brother has been taken at my command, to answer for his crimes,† Ned Stark said. Littlefinger groaned in dismay. â€Å"My lords—† Ser Jaime ripped his longsword from its sheath and urged his stallion forward. â€Å"Show me your steel, Lord Eddard. I’ll butcher you like Aerys if I must, but I’d sooner you died with a blade in your hand.† He gave Littlefinger a cool, contemptuous glance. â€Å"Lord Baelish, I’d leave here in some haste if I did not care to get bloodstains on my costly clothing.† Littlefinger did not need to be urged. â€Å"I will bring the City Watch,† he promised Ned. The Lannister line parted to let him through, and closed behind him. Littlefinger put his heels to his mare and vanished around a corner. Ned’s men had drawn their swords, but they were three against twenty. Eyes watched from nearby windows and doors, but no one was about to intervene. His party was mounted, the Lannisters on foot save for Jaime himself. A charge might win them free, but it seemed to Eddard Stark that they had a surer, safer tactic. â€Å"Kill me,† he warned the Kingslayer, â€Å"and Catelyn will most certainly slay Tyrion.† Jaime Lannister poked at Ned’s chest with the gilded sword that had sipped the blood of the last of the Dragonkings. â€Å"Would she? The noble Catelyn Tully of Riverrun murder a hostage? I think . . . not.† He sighed. â€Å"But I am not willing to chance my brother’s life on a woman’s honor.† Jaime slid the golden sword into its sheath. â€Å"So I suppose I’ll let you run back to Robert to tell him how I frightened you. I wonder if he’ll care.† Jaime pushed his wet hair back with his fingers and wheeled his horse around. When he was beyond the line of swordsmen, he glanced back at his captain. â€Å"Tregar, see that no harm comes to Lord Stark.† â€Å"As you say, m’lord.† â€Å"Still . . . we wouldn’t want him to leave here entirely unchastened, so†Ã¢â‚¬â€through the night and the rain, he glimpsed the white of Jaime’s smile—†kill his men.† â€Å"No!† Ned Stark screamed, clawing for his sword. Jaime was already cantering off down the street as he heard Wyl shout. Men closed from both sides. Ned rode one down, cutting at phantoms in red cloaks who gave way before him. Jory Cassel put his heels into his mount and charged. A steel-shod hoof caught a Lannister guardsman in the face with a sickening crunch. A second man reeled away and for an instant Jory was free. Wyl cursed as they pulled him off his dying horse, swords slashing in the rain. Ned galloped to him, bringing his longsword down on Tregar’s helm. The jolt of impact made him grit his teeth. Tregar stumbled to his knees, his lion crest sheared in half, blood running down his face. Heward was hacking at the hands that had seized his bridle when a spear caught him in the belly. Suddenly Jory was back among them, a red rain flying from his sword. â€Å"No!† Ned shouted. â€Å"Jory, away!† Ned’s horse slipped under him and came crash ing down in the mud. There was a moment of blinding pain and the taste of blood in his mouth. He saw them cut the legs from Jory’s mount and drag him to the earth, swords rising and failing as they closed in around him. When Ned’s horse lurched back to its feet, he tried to rise, only to fall again, choking on his scream. He could see the splintered bone poking through his calf. It was the last thing he saw for a time. The rain came down and down and down. When he opened his eyes again, Lord Eddard Stark was alone with his dead. His horse moved closer, caught the rank scent of blood, and galloped away. Ned began to drag himself through the mud, gritting his teeth at the agony in his leg. It seemed to take years. Faces watched from candlelit windows, and people began to emerge from alleys and doors, but no one moved to help. Littlefinger and the City Watch found him there in the street, cradling Jory Cassel’s body in his arms. Somewhere the gold cloaks found a litter, but the trip back to the castle was a blur of agony, and Ned lost consciousness more than once. He remembered seeing the Red Keep looming ahead of him in the first grey light of dawn. The rain had darkened the pale pink stone of the massive walls to the color of blood. Then Grand Maester Pycelle was looming over him, holding a cup, whispering, â€Å"Drink, my lord. Here. The milk of the poppy, for your pain.† He remembered swallowing, and Pycelle was telling someone to heat the wine to boiling and fetch him clean silk, and that was the last he knew. How to cite A Game of Thrones Chapter Thirty-five, Essay examples

Smart Materials in Aerospace Industry free essay sample

Within each subsection, we will draw a relationship between the properties of the smart material and its molecular mechanism. This is followed by presenting an outline of their recent and future applications, and the experimental procedures and results done in recent researches to show the feasibility of these applications. In the Discussion section, we will be delving into the cost-effectiveness and feasibility of using smart materials in aerospace components. Finally, the conclusion will give an insight into the relationship between the use of smart materials and the design of future aircrafts. Smart materials are defined as materials that can significantly change their intrinsic properties (mechanical, thermal, optical or electromagnetic), in a predictable and controlled manner in response to their environmental stimulus[1]. In general, these materials can be categorized into 3 categories, namely thermal-to-mechanical (shape memory alloys), electrical-to-mechanical (piezoelectric), and magnetic-to-mechanical (magnetostrictive). Materials engineering has undergone a major transformation in the recent decade, as atoms and molecules are no longer viewed and worked upon on the microscopic level, but now on the nanometer level. Materials requirements are becoming more complex, especially in the aerospace industry in which safety and cost-effectiveness often conflict against each other. It is no longer acceptable for materials to have a single function; they need to be multifunctional to save costs and weight. Smart materials are now replacing monolithic ones to achieve multiple functions at all scale levels. Hence, smart materials are essentially integrated into the use of aerospace components. What differentiates smart materials from normal monolithic ones? Smart materials exhibit characteristics which most scientists would term as ‘intelligence’. This includes immediacy (the ability to respond in real time); transiency (the ability to respond to more than one environmental states); self-actuation (inherent intelligence within material); selectivity (having a discrete and predictable response); and lastly, directness (response is local to the ‘activating’ event)[2]. The performance characteristics of aircrafts are often limited by properties of materials used in both the airframe and propulsion systems. With the recent advancement of materials technology, high performance materials are created, resulting in a breakthrough in the performance and efficiency of modern aircrafts. The discovery of smart materials provides cost-effective and innovative solutions to the limitations currently faced in the design of aircrafts. These smart materials perform specialized functions when exposed to external stimuli, and they are increasingly being used to replace conventional aircraft parts for better performance. In this report, we shall look at the current and future use of these smart materials in the aerospace industry. 1. Purpose The purpose of this report is to introduce the different types of smart materials and their applications in the aerospace industry. Recent and emerging uses of these smart materials will also be presented, with brief experimental procedures and results obtained from recent researches and experiments to show the feasibility in aerospace applications. 1. 2 Background Smart material transformation was first observed on gold-cadmium, and recorded in 1932. Five year later, in 1938, the same phase transformation was observed in brass. In 1962, Beehler and coworkers discovered the shape memory effects of Nickel-Titanium alloy, and they named this family of alloy as Nitinol. The discovery of Nitinol ignites the discovery of other alloy systems with shape memory effect, and also accelerates the use of smart materials in product development. [3] Since then, aerospace companies are also exploring the use of smart materials in aircraft components. Conventional automatic control systems which use servo-valve or hydraulic actuators face a lot of limitations. These limitations include multiple energy conversions, complexity due to large number of parts resulting in large number of potential failure sites and large weight penalty, high vulnerability of hydraulic network, and frequency limitation. In contrast, the advantages from the use of smart materials actuators include the direct conversion of electrical energy to high frequency linear motion, easier transmission of electrical energy throughout aircraft, and light and compact smart materials induced-strain actuation in place of bulky hydraulic power systems. With this huge potential offered by smart materials, researchers are eager to tap on this potential, by exploring on ways to implement these smart materials into aircraft components. 1. 3 Scope This report will present the 4 common types of smart materials that are popular in the market. A brief description will be made with regards to the mechanism of how the smart materials function. The properties of the smart materials will then be related to their current and future aerospace application. This is followed by the detailed outline of the experimental procedures undertaken by past researches, as well as results obtained which prove the feasibility of using these smart materials for the aerospace applications. Finally, discussions will be made on the viability of the use of smart materials in the aerospace industry, in terms of safety, cost feasibility and future trends. . Types and Applications of Smart Materials 1. Piezoelectric Material Piezoelectricity is the generation of electrical potential in a material in response to a mechanical stress. This is known as the direct effect. It can also mean mechanical deformation upon the application of electrical charge or signal (Harrison JS and Ounaies Z, 2001). In this case, the material can serve as a sensor to detect m echanical stress. In addition, the materials can serve as an actuator when there’s a large increase of size due to electrical stimuli. The two types of piezoelectric materials that are used as smart materials are piezoelectric ceramic and polymer. Properties Piezoelectric materials are widely used as they possess favorable properties such as fast electromechanical response, wide bandwidth, high generative force and relatively low power requirements (Harrison JS and Ounaies Z, 2001). In addition, piezoelectric polymers are flexible, lightweight, and have low acoustic and mechanical impedance, while piezoelectric ceramics are brittle, heavy and toxic. Mechanism Piezoelectric effect is formed in crystals that have no centre of symmetry. One end of the molecule is more negatively charged while the other end is more positively charged, hence a dipole moment exists within the molecule. This is due to both the atomic configuration of the molecule, and also the molecular shape. Polar axis is the imaginary line that runs through the centre of both charges on the molecule. The orientation of the polar axis determines the type of crystal. For monocrystal, all the molecules’ polar axes are oriented in the same direction (Figure 2. 1. 1), while for polycrystal, the polar axes of molecules are oriented in different direction. When the material is compressed, a voltage of the same polarity as the resultant dipole moment will appear between the electrodes (Figure (b)). Conversely, the voltage will be of opposite polarity when the material is expanded (Figure (c)). Similarly, a voltage applied that is opposite to the poling voltage will cause the material to expand(Figure (d)), while an applied voltage of the same polarity will cause the material to be compressed (Figure (e)). If an alternating voltage is applied across the material, the material will vibrate with the same frequency as the signal. [pic] Figure 2. 1. 4 Advantages and Disadvantages[4] Advantages |Disadvantages | |Compact and lightweight |Brittle due to crystalline structure | |Displacement proportional to applied voltage |Produce small strains compared to SMA and magnetostrictives | |Operate over large temperature range |Cannot withstand high shear and tension | |Fast response to applied voltage(msec) |Aging of material | |Repeatable sub-nanom eter steps at high frequency |Uses active control, which can result in instability | |No moving parts |Can become depolarized (at high temperature, high voltages and large | |Function at high frequencies |stresses) | |Excellent stability | | |Easily embedded into laminated composites | | Aerospace Applications Piezoelectric materials are mainly used in the aerospace industry for shape control and vibration control. †¢ Tail-Buffet Suppression High performance aircrafts with twin vertical tails often face the aeroelastic phenomenon of tail buffeting, in which the unsteady vortices that emanates from the wing leading edge extensions burst and immerse the vertical tails in their wake. This results in severe vertical tail response and buffet loads, which lowers airframe life and increases maintenance costs. pic][pic] Before the development of piezoelectric actuators, various method of alleviating buffeting was used. One method was the use of hydraulic actuators to superimpose the oscillations of affected control surfaces about their hinges, so as to effect damping. However, this method has two disadvantages. Firstly, the flight control system and buffeting-minimization system must use the same degree of freedom for the same control surface, thus reducing the availabi lity of the control surface for each role. Secondly, operations are limited to low frequencies due to the difficulty of oscillation a large control surface about its hinges. These shakers are controlled by the test rig control system to model actual flight structural loads. †¢ In the experiment, four custom-made high-power amplifiers of 2kVA rating over 200Hz bandwidth were used. Results Conclusion The experimental results have shown that the active control system using piezoelectric actuators was able to effectively suppress the buffet response of the vertical fin at high angle of attack. Amplitude reductions of up to 60% at the normal flight configuration and close to 10% in the worst case scenario were observed (Yousefi-Koma A Zimcik DG 2003). It was estimated even a small 10% reduction in vibration amplitude would double the durability of the fin. Hence, it can be concluded that with the use of piezoelectric actuators in active-control surface modal (ACSM) device to deform the control surface, the control surface not only can respond to buffeting-minimization signals, but also flight control commands. †¢ Wing Flutter Damping When a structure is placed in a flow of sufficiently high velocity, an aeroelastic self-excited vibration takes place, which has a sustained or divergent amplitude. This results in dynamic instability that can get violent. This is because at high speed, the effect of the airstream can cause the coupling of two or more vibration modes such that the vibrating structure will extract energy from the airstream. The extracted energy equals the amount of energy that the structure can dissipate at the critical speed, and a neutrally stable vibration exists. However, above this critical speed, the vibration amplitude will diverge, causing structural failure. Experiment and Result The Piezoelectric Aeroelastic Response Tailoring Investigation was conducted at MIT with the support of NASA, and it aims to achieve the following objectives: determining the power consumption of the piezoelectric actuators while controlling the response of the structure; investigating optimal piezoelectric actuator placement; and, testing disturbance rejection controllers at zero airspeed (Anna-Maria Rivas McGowan). The major components of the 4-feet test model, as shown in Figure 2. 1. , consist of two primary structures: an exterior fiberglass shell, which is used to obtain aerodynamic lift; an interior composite plate that contains the piezoelectric actuators, and is made up of an aluminium honeycomb core sandwiche d by graphite epoxy plates. The plates are of [20 °2/0 °]s laminate, referenced to the wings quarter-chord which is swept 30 °, and this provides a static coupling of the bending and torsional behaviour. Fifteen groups of piezoceramic actuators patches are placed at the top and bottom of the interior plate, and they are configured to impart moments to the plate. Together with the orientation of the graphite epoxy and the wing sweep angle, the actuators can affect bending and torsional vibration of the model. Forces on the model were monitored using ten strain gauges and four accelerometers. To acquire time history data, each of the 15 piezoelectric actuator groups was activated individually, as well as in five sets of several actuator groups. The experimental results is shown in the graphs in Figure 2. 1. 7. In summary, it shows that the control system can effect successful flutter suppression and gust reduction in the model, with a 12% increase in flutter damping and 75% decrease in root-bending moment caused by gusts. This clearly shows the potential of the use of piezoelectric actuators in suppressing the detrimental effects of wing flutter. [pic] Figure 2. 1. 6 pic] Figure 2. 1. 7 †¢ Rotor Blade Twist Outboard portion of the blade travel faster, and with the same lift coefficient, higher lift force is concentrated near the blade tip. To distribute the lift force evenly among the blades, the angle of attack is made to be lower near the blade tip, and higher near the blade root, s uch that the lift coefficient decreases with increasing distance from the blade root.