Tuesday, August 25, 2020
September 11th: The Day Innocence Died :: September 11 Terrorism Essays
September eleventh, 8:45 a.m.: An enormous plane, perhaps a captured aircraft, collides with one of the World Trade Center towers, tearing a vast gap in the structure and setting it burning. 9:03 a.m.: A subsequent plane, clearly a traveler stream, collides with the subsequent World Trade Center pinnacle and detonates. The two structures are consuming. 9:30 a.m.: Bush, talking in Florida, says the nation has endured an obvious fear based oppressor assault. 9:43 a.m.: An airplane collides with the Pentagon, sending up a colossal tuft of smoke. Clearing starts right away. 9:45 a.m.: The White House empties. 10:05 a.m.: The south pinnacle of the World Trade Center breakdown, falling into the boulevards underneath. An enormous dust storm and flotsam and jetsam structures and gradually floats away from the structure. 10:10 a.m.: A bit of the Pentagon breakdown. 1:27 p.m.: A highly sensitive situation is proclaimed by the city of Washington. 1:30 p.m. The nation needs answers. First stun, at that point fear, trailed by distress, and in conclusion rage. How could such a demonstration be submitted on American soil? This nation poses this inquiry in dismay. The US requests answers and vengeance for this demonstration of malevolence. Who is at fault for the potential a huge number of passings? The best way to respond to this inquiry is to take a gander at the individuals that could do such a demonstration and what potential reasons they would have for doing it. This area as an opening investigates oceans for answers, they look to a province considered Afghanistan that harbors a psychological oppressor called Osama canister Laden. Canister Laden, an Islamic fundamentalist and the child of a Saudi extremely rich person, has been on the FBI's Ten Most Wanted Fugitive rundown since 1999, and the U.S. State Department has offered a $5 million compensation for his capture. Quoted from www.cnn.com. Most U.S. examiners state container Laden is the pioneer of a gathering called al Qaeda (Arabic for the Base), this is a system accused for fruitful and bombed psychological militant strikes on the U.S. Some are the thousand years shelling plot, a year ago's assault on the USS Cole, in Yemen slaughtering 17 U.S. mariners and injuring 39, and the almost concurrent bombings of the U.S. government offices in Tanzania and Kenya. Container Laden, a Muslim accepts that he is battling a sacred war for the sake of his religion. Muslims are Followers of the Islam religion. They accept that Allah is the One True God.
Saturday, August 22, 2020
The Social Contract Theory Essay Example for Free
The Social Contract Theory Essay The Social Contract Theory as propounded by Hobbes depends on the ratiocination that whenever left totally free, individuals will act against their own personal circumstance in the drawn out except if they are exposed to a power figure which screens their inclinations for tranquil concurrence all in all. The situation which comprises opportunity utilizes the idea of State of Nature while the arrangement that visualizes a power figure frames the premise of Social Contract. Under State of Nature, a keeps an eye on own personal responsibility when followed without thought for others under the affection of rivalry, endurance and vainglory brings about a kind of disastrous man against man situation. In such a situation, man begins offering reins to his baser senses of endurance without thought for other people. To keep away from this, people need to surrender their privileges to a sovereign power, in a Social Contract, that ensures their inclinations without encroaching on anotherââ¬â¢s interests. For this, it is basic that the decision authority be above insignificant preferences and predispositions to tie every person who might some way or another all alone be contenders and not generally concur with their various thoughts of equity and reasonableness. The course of activities of people to a tranquil conjunction requires a lot of decides that frames the premise of profound quality which is trivial under State of Nature, where individual interests without respect for others is the main principle having an effect on everything. The agreement of Social Contract accordingly authorizes a positive change of men from clamorous self serving elements to people getting a charge out of request and harmony in a sorted out society. Satisfying all being an incomprehensible recommendation, any qualms against the expert in a Social Contract coming about because of maltreatment of intensity must be borne as a cost for harmony over the disorder in State of Nature. It must be referenced anyway that the people despite everything hold the option to dissent and request clarifications if there should arise an occurrence of overabundances by the sovereign power. References Hampton, Jean (1988). Hobbes and Social Contract Tradition. Cambridge University Press.
Friday, August 7, 2020
Right on Schedule COLUMBIA UNIVERSITY - SIPA Admissions Blog
Right on Schedule COLUMBIA UNIVERSITY - SIPA Admissions Blog Numbers are definitely a big part of the life of anyone that works in an admission office. Here are a few insights into what has been on my mind lately . . . Each year at SIPA roughly half of the people who apply submit their application within 72 hours of the deadline. A recent report I ran indicates that this year will be no different. 120 hours prior to the January 5th deadline approximately 25% of those in the system had submitted their application. Roughly 75% are still working away and it would not be surprising to see another 25% submit within a 48 hour period leaving us with 50% remaining for the final 72 hours. The story is really no different for letters of recommendation. In the last 24 hours of 2010 there were some busy people. We received 224 recommendations in the 24 hours prior to the new year and there are still roughly 1,000 that need to be submitted in the final few days. For those that did submit the application early, now maybe you can understand why we do not start printing applications as soon as they are submitted. When we print applications, we tell the system to print any submitted recommendations letters at the same time. Thus, in a perfect world, if you as the applicant submitted all of your information on the application site and your recommenders submitted their letters online as well, everything would print at a single time. If we print your application and a letter has not been submitted (or any other document for that matter) we have to run a sweep at a later time to look for the documents required to complete your file. The dreaded sweep is filled with peril. Looking for documents that have been submitted separately can lead to all sorts of paper cuts and staple gouges. So if you have submitted your application please be aware that it can still take us some time to complete your file. And if you have yet to submit your application and do so within the next few days, please understand that it might be a few weeks before we certify your file as complete. Please carefully review this post for important information on how we track application in our office. All things considered, we appear to be right on schedule.
Saturday, May 23, 2020
The Paradox Of Belonging The Complex Role Of Colonialism
The Paradox of Belonging: The Complex Role of Colonialism in Finding Identity Adrienne Clarkson the twenty-sixth Governor General of Canada once wrote: ââ¬Å"I was, and am, a child of diaspora. I am someone who, for a while, did not belong anywhere.â⬠For nearly everyone who has ever lived in the wake of colonialism, it can be painstakingly difficult to find a sense of belonging with two distinct cultures being juxtaposed together. This colonization process had devastating effects for those upon which the English imposed their ethnocentric views. In George Orwellââ¬â¢s ââ¬Å"Shooting an Elephantâ⬠the audience is told a story from Orwellââ¬â¢s days as a police officer in Burma. In his essay, Orwell is confronted with conflicting emotions. He hates theâ⬠¦show more contentâ⬠¦This demonstrates the level of fear that the white Rhodesian people had towards the black people in which they shared a country. This war and conflict results in the transformation of one country into another. This transformation makes it difficult for Fuller to und erstand her nationality, as Elaine Windrich notes: ââ¬Å"It was hardly to be expected that the Fuller family could come to terms with the transformation of Rhodesia into Zimbabweâ⬠(1184). Because of this war and its devastating effects on everyday life Fuller lived constantly in fear for her life and unable to find a sense of belonging to her society. The inner conflict that Alexandra Fuller feels regarding her possible role in the death of her sister also weighs very heavily on her conscience. She feels guilty about how Oliviaââ¬â¢s death has affected her motherââ¬â¢s mental illness as she recalls: ââ¬Å"No one ever came right out and said it in words and with pointing fingers. They didnââ¬â¢t have toâ⬠(Fuller 93). It is quite evident to the reader that Fuller would not be easily able to form her own personal identity, apart from the colonizerââ¬â¢s mentality in regard to belonging in her society due to the extreme guilt she feels. The setting of ââ¬Å"Shooting an Elephantâ⬠produces a greater appreciation of the personal effectShow MoreRelatedAustralian Films - Screening Responces3687 Words à |à 15 Pagestimes; the context before the television was a household object. The movie marks the beginning of mass social and political change that was intensified by World War II. With countless men at war, Australian women were able to enter and overtake male roles in the workforce. As a result, Feminism was strengthening. Along with the Womenââ¬â¢s movement into the workforce, Robert Menzieââ¬â¢s 16-year service as the Prime Minister created the ââ¬ËMenzies Eraââ¬â¢, where great Australian change has said to be recorded. InRead MoreDogeaters by Jessica Hagedorn3664 Words à |à 15 Pagesduring the 1950s when the novel takes place. ââ¬Å"Chaotic,â⬠cry the critics. ââ¬Å"Exactly!â⬠answers the author. The novel is largely metaphoric because the characters serve the dual purpose of character and symbol. Therefore, most of the characters are not complex and the author has been criticized for the number of characters that overcrowd the novel, sometimes causing a lapse in development. Critic Blanche Dââ¬â¢Alpuget points out such a lapse with Rioââ¬â¢s brother, who is introduced at the beginning of the novelRead More The Flaws and Shortcomings of African Historiography Essay5023 Words à |à 21 Pageshistorians have attempted to force them into. As Bozzoli pointed out, historians generally fall into two categories. The first group consists of historians who emphasize and characterize Africans as victims and ââ¬Å"somewhat pathetic objects of colonialism, racism, oppression, poverty, patriarchy, and capitalism and the converse of this ââ¬â the ââ¬Ërah rahââ¬â¢ approach, which makes romantic celebratory and teleological assumptions about theâ⬠¦African conscious and struggleâ⬠(Bozzoli, 240). Bozzoli illustratesRead More The Evolving Nexus between Islam and Iran Essay5554 Words à |à 23 PagesThe Evolving Nexus between Islam and Iran The nexus between Islam and Iran is a complex one. Islam was brought to Iran via Arab-Islamic conquest in 650 AD and has played a shifting, anomalous role in this nation-state ever since. The ideas of nationalism, secularism, religion, and revolution are unique in this Muslim country. Iranians, unlike many of their neighbors, hold on very strongly to their pre-Islamic roots and achievements; sentiments of nationalism are apparent throughout Iranian historyRead MoreOne Significant Change That Has Occurred in the World Between 1900 and 2005. Explain the Impact This Change Has Made on Our Lives and Why It Is an Important Change.163893 Words à |à 656 Pageswhich perhaps more than any other attribute distinguish this turbulent phase of the human experience, render it impervious to generalized pronouncements and difficult to conceptualize broadly. As the essays in this collection document in detail, paradox pervades the time span we call the twentieth century, no matter how it is temporally delineated. Never before in history, for example, had so many humans enjoyed such high standards of living, and never had so many been so impoverished or diedRead MoreOrganisational Theory230255 Words à |à 922 Pagesdebates: explaining and understanding the diverse nature of organization theory Mapping some aspects of organization theoryââ¬â¢s diversity Positivist protagonists: the truth is out there, and we can objectively know it Philosophical disputes around the role of the subjective in science Epistemological and ontolological disputes: how can we ever know the ââ¬Ëtruthââ¬â¢ and is there an ââ¬Ëout thereââ¬â¢? A few words of warning about the term postmodernism Overview of the structure and rationale of the book Chapter summariesRead MoreExploring Corporate Strategy - Case164366 Words à |à 658 Pagesformulation for a wide audience of public and commercial stakeholders. Fisons ââ¬â disastrous consequences of stakeholder management. Iona ââ¬â Mission-driven strategy and stakeholder management. HomeCo ââ¬â wrestling with governance and strategy in the boardroom; a role play. BMW ââ¬â driving org anic growth through market development in the automotive industry. VSM ââ¬â the development of global competitive strategy in a declining market. Thorntons ââ¬â a variety box of strategies in the manufacture and retail of chocolates
Tuesday, May 12, 2020
A Child Called It By Dave Pelezer - 953 Words
The book I choose to write this paper on child development is A child Called It by Dave Pelezer. This book talks about the relationship between a alcoholic mother and her son name Dave. Who has been abused everyday; both mentally and physically. Once you read this book you will feel every little emotion that runs through Dave body. When I say this Iââ¬â¢m talking about when his mother decides to do the abuse and the after effect feeling that Dave has. I really recommend this book to be read by mothers because it exemplifies that no matter if your single mother with one or more kids no type of abuse is ok. If you ever decided to read this book be prepared to cry, smile, and get angry. Once you finish reading I think any parent would have a new mind set before even attempting to see their child cry ever again. Now letââ¬â¢s talk more in depth about this wonderful book. Like I stated in the introduction itââ¬â¢s based on a mother and son relationship around abuse. The son name is Dave he is a elementary student Iââ¬â¢m guessing around the 3rd grade. he is the youngest out of his three brothers. His mother was an alcoholic that was married before the father decided to walk away from their alcoholic mother. Dave abuses from his mother started way before his father left but it just reached the beginning while his dad was there. Its started as just a pull on the arm and slight hit on the hand. His mother always try make Dave feel like he was a bad boy no matter what he did. Once Dave
Wednesday, May 6, 2020
The extraordinarily horrible Robot Free Essays
It was my mateââ¬â¢s birthday. He was going to turn 14. I wanted to get him something really special because I have known him since we were two years old. We will write a custom essay sample on The extraordinarily horrible Robot or any similar topic only for you Order Now My mum told me that we were both born in the same hospital in London but then we moved to Germany because my dad had had found a really good job. After a couple of years my mum got bored and couldnââ¬â¢t take anymore of where she lived and told dad that she wanted to go back to London because she preferred it there and she knew more people. They both had a massive argument and stopped talking for weeks and weeks but eventually my dad apologised to mum and told her to move back into London and that heââ¬â¢ll supply us with money and everything we need and heââ¬â¢ll visit us once in a while. They promised each other that theyââ¬â¢ll write to each other every other week. Eventually mum found a job at an office, she was this mans secretary. This man was no ordinary man he scared me a little. He seemed really weird. He would always mutter something to mum every time he saw me it really freaked me out. As time went by my mum started to talk about dad less and she stopped replying to all his mail. I was really worried about her and really felt sorry for dad. Eventually mum phoned him, I had just walked home from a long boring, bad day from school and I was just about to slam the front door when I heard mums voice ââ¬Å"Harry, listen to me this is really not going to work outâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦.â⬠I stood silent for a minute. I silently shut the front door and walked closer to the kitchen. Then I heard my mum speak again, ââ¬Å"listen, Iââ¬â¢ve been meaning to tell you, I meanâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦.. umâ⬠¦ oh I canââ¬â¢t do thisâ⬠then she slammed the phone down and ran out the room crying. I was thinking to myself oh mum ââ¬Ëwhat have you done you poor silly womanââ¬â¢. I was really surprised of what just happened and couldnââ¬â¢t even get myself to comfort her, it was like I wanted her to suffer for what had just happened. I walked upstairs really slowly trying to process through my mind what had just happened when I heard my mum sobbing and speaking to someone. I was thinking who the hell is she talking to or is my mum just beginning to go mad. I crept up to her room, her door was slightly ajar and I peeked through and jumped back in surprise and gasped. I ran to my room and slammed the door shut. My windows rattled for 2mins straight. I jumped on my bed and covered my head under the pillow and let out my anger and cried all night. I must have dosed off. When I woke up I peered at my clock sleepily, it showed 08:59. I jumped out o bed and quickly slipped my school uniform and gathered my books and went to run out my door when something threw my door open and started walking towards me with its arms outstretched and covered in a cloth hiding its identity. It was about knee high and scared the living daylights out of me. It picked up my baseball bat and held it in the swinging position and turned round and walked back towards me raising the bat as it closer. It was only a few inches away when I opened my mouth to scream. Nothing came out and the thing just swung for me. I closed my eyes and waited for the pain. After a few seconds I opened my eyes again and saw my mum and Steve (my mums boss) standing by the doorway in the same clothes they were in yesterday with a very large grin on their faces. That was another thing I forgot about ââ¬Ëwhat the hell is he doing still here from last nightââ¬â¢. Mum tells me that she and dad broke up because dad didnââ¬â¢t care for them anymore. I know that wasnââ¬â¢t the truth but played along with it. I know it was really Steve who made her do it. Thatââ¬â¢s why he was in her room that day. I forgot about the whole thing and Steve told me he bought the robot for me as a present to show me that he will look after me really well. I just nodded and didnââ¬â¢t smile. I think he got the picture and he just said to me ââ¬Ëif you need anything just askââ¬â¢, and then he went. I was playing with the robot that day after school and I put the controller down and turned round to go on the internet on my computer when a heard a funny, whirring sound just like myâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦ROBOT!!! I turn around and the robot was on my desk, and I left him on the floor. I screamed at the top of my pitch and nobody came. Everyone had gone out, I assumed. I picked up the robot and threw it across the room the leg and arm fell off. I left it there and fell asleep. I got up the next morning and remembered it was Jamieââ¬â¢s birthday. He was my best friend. I forgot to get him a present. He was going to be mad at me when I got into school. After I got change and had my breakfast I went up to pick up my bag and as I stepped into my room I heard a crunch. I looked down and I saw that I had just broken the other leg. I looked at the robot and it gave me an idea. I went into school with a large box wrapped in read wrapping paper. I gave it to Jamie and I never saw him smile so much in his life. He thanked me and invited me for a sleepover that night. I delightfully said of course. I got home from school and there was a note on the kitchen table written by mum saying that she has gone away on an emergency business meeting and that she wonââ¬â¢t be back for a couple of days. I didnââ¬â¢t think much of it. I made my way over to Jamieââ¬â¢s and I could swear that something was following me. I turned round every now and then but all I could see was my shadow. I got to his doorstep and I pressed the doorbell relieved that I made to his house without any trouble. Jamieââ¬â¢s dad answered it gave me a smile and took my bags an told me that mum phoned asking If I could stay round Jamieââ¬â¢s for a few days still she gets back. I knew Jamieââ¬â¢s family wouldnââ¬â¢t say no. They thanked me for the present I gave Jamie and he came running down the stairs and gave me a hug and thanked me as well. I started to blush in front of his parents. We went upstairs and as I got into his room I heard his doorbell ring. I went to answer it but his mum said sheââ¬â¢ll get it. As she opened the door Jamieââ¬â¢s dad asked who it was and before I could hear her reply Jamie cranked his music up. I ignored what happened and had fun in his room. I asked Jamie what he thought of his present. He told me he loved it but he had a funny look on his face like he was trying to change the subject. I asked him where it was and he said his dad put it in the attic because it seemed violent. I asked him to get it. Jamie said that heââ¬â¢ll get into trouble but he said heââ¬â¢ll get it anyway. I waited for him for 20mins and he didnââ¬â¢t return. I went to his attic and he wasnââ¬â¢t there. I saw blood trails on the floor and I was really frightened. I followed them and they leaded to the kitchen. I entered slowly and peered through. I stood in silence and screamed as I saw Jamieââ¬â¢s mum, dad and Jamie all in a pile with vicious stab marks in their bodies. I turned away to run and I saw, I wasnââ¬â¢t sure if I was looking at itâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦Ã¢â¬ ¦. The robot was alive. It started moving towards me wit a butcherââ¬â¢s knife in its hand and it stopped. Someone entered the room behind it with a hooded cloak. He looked up at me and smile. I could only see his mouth. He let out a evil laugh and said ââ¬Å"now I can have your mum all to myselfâ⬠and laughed continuously and the robot through the knife and it went right through my heart and just as I was closing my eyes, the figure unmasked itselfâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦.. ââ¬Å"Steveâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦.â⬠I said before I crashed to the ground. Then my eyes shut. How to cite The extraordinarily horrible Robot, Papers
Friday, May 1, 2020
Classical music concert report free essay sample
The program began with Welcome to all the pleasures, which Is an ode written for the Saint Cellar Day, imposed by the English Baroque composer Henry Purcell in 1683. It opens with a symphony with canonic violin parts. Purcell creates a concerto gross effect with the contrapuntal violin melodies. Then comes the countertenor solo which I found very Impressing. The second piece they performed was Violin Concerto In A major, Pop. 7:6 composed by the French Baroque violinist and composer Jean-Merle Lacteal. After conducting the first piece, Adrian Butterflies played the solo violin for this one.This concerto begins with an allegro ma non presto movement, which is Joyful and fast, but not at an extreme rate. The first movement Is in reiteration form. The orchestra keeps returning to the main theme after violin solos. This movement has a homophobic texture and is in simple duple meter. The second movement is an aria at a slower tempo. After conducting the first piece, Adrian Butterfield played the solo violin for this one. This concerto begins with an allegro ma non presto movement, which is joyful and fast, but not at an extreme rate. The first movement is in ritornello form. The orchestra keeps returning to the main theme after violin solos. This movement has a homophonic texture and is in simple duple meter. The second movement is an aria at a slower tempo. It is in the variations form, but this time in compound duple meter. One thing that grabbed my attention is that the variations do not overlap. Every variation ends before the next one starts. The third and last movement of the violin concerto is the gigue form, in which the meter stays as compound but the tempo accelerates and becomes allegro. After the break, the orchestra opened the second part of the concert with Introduzione teatrale in G major Op. 4:4 composed by the Italian composer and violinist Pietro Locatelli. This piece is from the Baroque Period like the other ones. In my opinion, this piece served as an introduction to the next one. The fourth piece that the orchestra performed was Sinfonia in C major, Wq. 182:3/H. 659 by the German Classical period musician and composer Carl Philipp Emanuel Bach, the fifth child and third son of Johann Sebastian Bach. Born in Weimar (Germany), he initially intended for a legal career but turned to musicà while he was studying at Frankfurt University. In 1738 he became a harpsichord player in Berlin at the court of Frederick the Great, holding this post for almost three decades. Then he succeeded as director of church music at Hamburg. C. P. E. Bach applied unsuccessfully in 1750 to succeed his father at Leipzig after his death. His achievement was to develop sonata? form an d invest it with weight and imaginative quality, most evidently in his sonatas, of which there are over 200, but also in his symphonies, over fifty concertos, violin sonatas, and the solo flute sonata in A minor. Also composed 22 Passions, Magnificat (1749), the oratorios Die Israeliten in der Wuste (1769) and Die Auferstehung und Himmelfahrt Jesu (1780), and many songs. He also wrote a celebrated treatise on klavier? playing. First, we hear a quite fast first movement in sonata form, which is typical form for the first movements of symphonies. However, the first theme is not repeat, which was not common in the Classical period. The transitions between the themes are so fast that it makes it hard to distinguish between them, unlike when we get to the second movement, which is much slower and darker than allegro assai. This part reminds me of the second movement in Johann Sebastian Bachââ¬â¢s Orchestral Suite No. 3 in D Major. The string arrangements in the beginning show similarities with J. S. Bachââ¬â¢s popular work. In this movement, there is a slow theme in minor mode, which keeps coming back in different variations. Thus, I think this movement is in the rondo form. After adagio, the mood of the piece gets ââ¬Å"brighterâ⬠. Allegretto is in the minuet form and it is build upon themes similar to each other. These themes consist of parallel and contrasting melodies. Texture-wise this symphony is homophonic. One can hear the different dynamics, but clearly it is not what this piece was written for. Speed and virtuosity is in the foreground. After Adrian Butterfield showed the audience his virtuosic abilities, he turned his face again to the orchestra and Cappella Antica joined them for the second time. We were back to Henry Purcell with My heart is inditing, Z. 30. This piece is at a moderate tempo and has polyphonic as well as melismatic choral parts. They closed the anthem with a magnificent ââ¬Å"Alleluiaâ⬠part. The McGill Baroque Orchestra is a typical Baroque orchestra consists of eight violin players, of which the half played violin I and the other half violin II; three violists, two cellists, a violone player, two harpsichord and an organ, which were played by five different performers, and, of course, the guest conductor and the solo violinist Adrian Butterfield. They were accompanied by a choir of male and female singers on the choral pieces. The venue was very suitable for a Baroque concert. In the concert hall, there was giant pipe organ, which gave the venue an authentic visual aesthetic. Adrian Butterfield is an extraordinary violinist and a successful conductor. His control over his instrument was captivating. I enjoyed this concert in particular, not only because he has the ability to play all those fast licks on his violin without an effort, but also McGill Baroque Orchestra and Cappella Antica performed the pieces in the best way possible. To that, I would like to add that the pieces were well chosen. Although C. P. E. Bachââ¬â¢s symphony in C major is a bit hard to analyze for uneducated ears, it was a pleasure to be able listen to this piece performed live. Word count: 1019Bibliography
Sunday, March 22, 2020
10 Best Romance Novels That Have Gone Underappreciated
10 Best Romance Novels That Have Gone Underappreciated 10 Best Romance Novels That Have Gone Underappreciated There are many romance novels out there. Some better than others, granted, but what makes some the best of the best? What gives them that je ne sais quoi factor weââ¬â¢re all craving, some of us even trying to emulate when writing a novel ourselves?I could go about this list in many different ways, but Iââ¬â¢ve decided not to make this one a common, boring, clichà © list. No.This is not that kind of list; this will give you the best romance novels in different categories and the reasons why youââ¬â¢ll fall in love with them!Here are the 11 best romance novels:Slammed by Colleen HooverFangirl by Rainbow RowellThe Notebook by Nicholas SparksThe Hating Game by Sally ThorneThe Light We Lost by Jill SantopoloDance Until Dawn by Berni StevensPride and Prejudice by Jane AustenMe Before You by Jojo MoyesGone with the Wind by Margaret MitchellIt Ends with Us by Colleen HooverSimon vs The Homo Sapiens Agenda by Becky AlbertalliNOTE: Ready to write your own romance novel to be making lists like this one day? Check out our VIP Fiction Self-Publishing Program so you can make that happen. Learn more about it hereSide note: youââ¬â¢ll need a big box of tissues for most of these, so be sure to grab one before you dive in!Best Romance Books Per CategoryThe answer is for pulling novels from specific categories is simple: there are far too many amazing books out there to choose from and if youââ¬â¢re mapping out a list of the best, youââ¬â¢re going to miss a few important ones.Categorizing them makes sense because youââ¬â¢ll be able to decide for yourself which type of book youââ¬â¢d enjoy more.Consequently, youââ¬â¢ll find the best one in each category here. Once you finish it, youââ¬â¢ll be able to say if you enjoy that theme or not. And if not, youââ¬â¢re ready to jump into one of the other picks.11 Best Romance NovelsIf youre looking for a quick read for a weekend or want to learn in order to write your own book, this list can give you some i nspiration.#1 Slammed by Colleen HooverCategory: Poetry, specifically slam poetryRomance Novel Summary: Layken, an 18-year-older student meets her new neighbour, Will. Will is 21. They have an instant connection based on their similar likes, which gives Layken hope for happier days.Once their connection is deep within you and you love them, thereââ¬â¢s a revelation that shocks them and us, and they canââ¬â¢t be together. The problem is, they really want to.Why Youââ¬â¢ll Love It: If youââ¬â¢re not reading it because you love slam poetry, donââ¬â¢t worry. Youââ¬â¢ll love slam poetry once youââ¬â¢re finshed! You may even want to try your hand at writing poetry afterward.I had heard a few poems before but with this book, I became totally obsessed with slam poetry. It takes the novel to a higher level and forces us readers to connect with it a lot more. It becomes personal.Itââ¬â¢s also easy to identify ourselves with this story because it discusses topics that weââ¬â¢ve all had to face, including death and grief. Colleen is a brilliant writer and she just knows how to pull your strings.Quote: ââ¬Å"Question everything. Your love, your religion, your passion. If you dont have questions, youll never find answers.â⬠#2 Fangirl by Rainbow RowellCategory: Young Adult RomanceRomance Novel Summary: Youââ¬â¢ll meet Cath Avery, who has a total opposite twin sister, Wren. When they both start college, Wren tells Cath she doesnââ¬â¢t want to be her roommate and they should live their college experience separately.Then, one day, between her awkwardness and fan-fiction stories, she meets Levi. And then everything changes. Slowly. But it changes.Why Youââ¬â¢ll Love It:This is not only a young adult romance, not only about love. Itââ¬â¢s also about making decisions at a young age and growth. The story is beautifully structured, and you wonââ¬â¢t be able to put it down before you finish it.Besides having a really solid love story, youââ¬â¢ll also have a good laugh when diving into Rowellââ¬â¢s world.Quote: ââ¬Å"In new situations, all the trickiest rules are the ones nobody bothers to explain to you. (And the ones you cant Google.)â⬠#3 The Notebook by Nicholas SparksCategory: Greatest Love StoryRomance Novel Summary:This is the story of Noah Calhoun and Allie Nelson. It is set in North Carolina after the Second World War. Noah thinks of Allie, a girl he had met 14 years prior. And one day, she shows up in his town.Nicholas Sparks is the master of twists and turns in love stories and this one does not disappoint. This is a book of surprises that will test Noah and Allieââ¬â¢s love until the end.Why Youââ¬â¢ll Love It:I mean, do I really need an explanation here? Everyone knows Nicholas Sparks and that his books are amazing and will leave you in tears!If youââ¬â¢ve watched the movie, read the book. If you havenââ¬â¢t watched the movie, read the book! Itââ¬â¢ll break your heart in th e most beautiful possible way.Quote: ââ¬Å"Every great love starts with a great storyâ⬠#4 The Hating Game by Sally ThorneCategory: Modern RomanceRomance Novel Summary:Lucy Hutton is a nice, sweet girl; Joshua Templeman is her opposite: cold and grumpy. They meet when the publishing houses they work at merge. Itââ¬â¢s hate at first sight.But everything changes with a kissâ⬠¦Why Youââ¬â¢ll Love It:Two opposites attractâ⬠¦ isnââ¬â¢t it just brilliant when you have a love/hate relationship in one of your books?Because this is a modern romance, the storyline is also modern, which is the reason why many, many people love this novel. Itââ¬â¢s easy to relate with it and Lucy is like the next-door neighbor, you just adore her.And with this title, how you could NOT want to read it?Quote: ââ¬Å"Its a corporate truth universally acknowledged that workers would rather eat rat skeletons than participate in group activities.â⬠#5 The Light We Lost by Jill Santopolo Category: Loss and GriefRomance Novel Summary:Lucy is a senior in college at Columbia University when she meets Gabe, also a college senior. They meet on an ill-fated day that will shape their lives and the lives of those around them forever.They meet throughout the years but thereââ¬â¢s always something in between them, thereââ¬â¢s always something preventing them from being together.And in the end, Lucy has a very important decision to make. What will she decide to do?Why Youââ¬â¢ll Love It:If youââ¬â¢ve read and love PS: I Love You by Cecelia Ahern, this book should be next on your list.I think itââ¬â¢s beautiful the way Santopolo deals with loss and grief, which are two themes so close and tangled with the subject of love.Even though they can be difficult to approach, the message is important and not every romance needs a stereotypical happily ever after.Quote: ââ¬Å"Maybe itââ¬â¢s the act of opening yourself up, letting someone else in- or maybe itââ¬â¢s t he act of caring so deeply about another person that it expands your heart.â⬠#6 Dance Until Dawn by Berni StevensCategory: Fantasy RomanceRomance Novel Summary:This is the first book in a series called ââ¬Å"Immortals of Londonâ⬠. Ellie Wakefield has been saved from death by William Austen, a 300-year-old vampire.Ellie has to learn about this new world and together they face unexpected challenges.Why Youââ¬â¢ll Love It:Who doesnââ¬â¢t love a good-olââ¬â¢ vampire story? Add to that a little old banter, and there you have it, the perfect novel!Fantasy and romance are just like peanut butter and jelly; thereââ¬â¢s no reason why they should go together, but they do, formidably.This book is full of mystery and Stevens has written it in a way that you just crave for more. Itââ¬â¢s fresh, well-detailed but very easy to read.Quote: ââ¬Å"I understand that this is rather a lot to take in,ââ¬â¢ he said. ââ¬ËBut I would appreciate it if you would stop referrin g to me as either psychotic or perverted.ââ¬â¢ ââ¬ËWell Iââ¬â¢d appreciate not being kidnapped and shut in this filthy hole.ââ¬â¢ ââ¬ËTouchà ©Ã¢â¬â¢.â⬠#7 Pride and Prejudice by Jane AustenCategory: Feminism and Classic LiteratureRomance Novel Summary:The story revolves around the Bennets, a noble family that doesnââ¬â¢t have a lot of money because of Mr. Bennet, the father.It all starts when two single noblemen arrive to town and, as it is custom, meet the single women, because ainââ¬â¢t it universally acknowledged ââ¬Å"that a single man in possession of a good fortune, must be in want of a wifeâ⬠?When Elizabeth and Mr. Darcy meet, itââ¬â¢s not all rainbows and flowers, but would it be a real love story if it was otherwise?Why Youââ¬â¢ll Love It:Classics are important for a reason, and that reason is mostly because theyââ¬â¢ll teach you something about the past, which most often than not, still has some truth in the present day.Youââ¬â ¢ll love Pride and Prejudice because Jane Austen wrote it for everyone to dream about it. Itââ¬â¢s an important story that needs to be read.Elizabeth Bennet was born way ahead of her time and sheââ¬â¢s here to teach you a lesson in sarcasm and feminism ââ¬â you just cannot not read it!Quote: ââ¬Å"He is a gentleman, and I am a gentlemans daughter. So far we are equal.â⬠#8 Me Before You by Jojo MoyesCategory: Illness and LossRomance Novel Summary:Louisa Clark loses her job and desperately needs to find another one. When the opportunity of taking care of Will Traynor, a young man that is wheelchair bound, knocks on her door, she doesnââ¬â¢t jump of happiness.Itââ¬â¢s a slow start and their relationship doesnââ¬â¢t seem to evolve, but as any other love story, there are twists and surprises along the way for both Louisa and Will.Why Youââ¬â¢ll Love It:This is a story of poor meets rich, good meets bad, but not at all as youââ¬â¢d expect it to be.Itââ¬â ¢s not even about these pairs at all. But youââ¬â¢ll connect, at first, with the main character, Louisa, because of this. Sheââ¬â¢s simple and relatable.Youââ¬â¢ll read it in an afternoon and youââ¬â¢ll still be crying months later.Quote: ââ¬Å"I will never, ever regret the things Ive done. Because most days, all you have are places in your memory that you can go to.â⬠#9 Gone with the Wind by Margaret MitchellCategory: History, specifically the Civil WarRomance Novel Summary:Scarlett Oââ¬â¢Hara has a hard task at hand: sheââ¬â¢s fighting for her familyââ¬â¢s plantation and for the love of her life ââ¬â if that wasnââ¬â¢t enough, this is amid the Civil War.In the end, will she get it all or lose everything?Why Youââ¬â¢ll Love It:Itââ¬â¢s History holding hands with a love story, what more could you need?It has the charm of the south in a very troubling period of history; itââ¬â¢s family and love struggles. Itââ¬â¢s one of the most popula r books ever written, and you just need to find out why!Quote: ââ¬Å"It was better to know the worst than to wonder.â⬠#10 It Ends with Us by Colleen HooverCategory: Abusive RelationshipsRomance Novel Summary:Lily is a determined, successful woman. She had a difficult life growing up, but she never stopped fighting for what she truly loved. She meets Ryle who has a no-dating rule, but they quickly become close.She thinks he had a difficult past too, but she canââ¬â¢t figure out what happened exactly. When things start changing, sheââ¬â¢s put in a place she never wanted to be back again.ââ¬Å"Sometimes it is the one who loves you who hurts you the most.â⬠Why Youââ¬â¢ll Love It:If youââ¬â¢re looking for strong-minded, determined women, this book is for you. Lily is written in a way that youââ¬â¢ll be rooting for her from page 1.Itââ¬â¢s a book that will touch some of you deeply and will haunt you for many years after the last page was turned. A beautiful love story that has more to it.Quote: ââ¬Å"Just because someone hurts you doesnt mean you can simply stop loving them. Its not a persons actions that hurt the most. Its the love. If there was no love attached to the action, the pain would be a little easier to bear.â⬠#11 Simon vs. The Homo Sapiens Agenda by Becky AlbertalliCategory: LGBTQ+Romance Novel Summary:Simon is 16 and very much homosexual, however, no one knows. When his secret is about to be revealed, a series of events lead him to being blackmailed.Heââ¬â¢ll try to navigate high school without anyone finding out his secret while not messing up his friendships nor his own life.Why Youââ¬â¢ll Love It:This is a fun yet serious book. The characters are well-created, and the dialogues are hilarious.The topic is an extremely important one nowadays and the lack of novels about the LGBTQ+ community make this one a success.The hardships of being teenager and on top of that, one with a secret, are well played in this n ovel and youââ¬â¢ll easily fall in love with Simon (and Blue).Quote: ââ¬Å"Why is straight the default? Everyone should have to declare one way or another, and it shouldnt be this big awkward thing whether youre straight, gay, bi, or whatever. Im just saying.â⬠Romance novels are unique in many waysIf youââ¬â¢re looking for a happily ever after, maybe you wonââ¬â¢t find it in all these books.However, arenââ¬â¢t stories closer to our reality a whole lot better? They allow us to think of our successes and failures and give us hope for a better future.If youââ¬â¢re looking for page-turners, refer to this list. I promise you these are novels you wonââ¬â¢t be able to put down once youââ¬â¢ve read the first page!Do you want your next novel to make a list like this?If you love romance novels enough to give writing your own a try, weve got what you need next.Check out this free training so your story can be a step above the rest.
Thursday, March 5, 2020
In Janus
In Janus, Andreas lover buys her a bowl at a crafts fair. It was his idea that when he could not be there to hold her hand she could hold her own.(16) Throughout this story Andrea becomes attached to the bowl because it reminds her of her lover. The author takes the audience through the many stages of Andreas love affair. In Janus Ann Beattie uses a bowl as a symbol of love. In the beginning of the story, Andrea views the bowl as perfect. She is excited about her new love. Perhaps it was not what youd select if you faced a shelf of bowls, and not the sort of thing that would inevitably attract a lot of attention at a crafts fair. Yet it had real presence.(1) Andreas perfect love is not something people agree with and they simply choose not to see it. She wants to make the bowl blend in with the objects around it. The bowl was not at all ostentatious, or even so noticeable that anyone would suspect that it had been put in place deliberately. (4) Andrea is careful where she is seen with her lover. No one would ever suspect him. The bowl is placed on the coffee table in her home. She didnt keep it carefully wrapped (although she transported it that way, in a box).(6) Andrea is careless with the bowl in the comfort of her home, however in public she is extremely careful and wraps it in a box. This is how Andrea must be with her lover. In their secret places they can let loose and show their love for each other. In public they must keep this love concealed. Andrea wants the bowl to be empty at all times. She asks her husband not to drop his house key in the bowl. The emptiness in the bowl is the empty space in her heart where the love she once had for her husband used to be. The bowl (her lover) is taking that place. Andrea does not want her husband in it.
Tuesday, February 18, 2020
How did Syria got impacted the Middle-East and especially Turkey Research Paper
How did Syria got impacted the Middle-East and especially Turkey - Research Paper Example The World Food Programme offers monthly food donations to about 4 million people who are victims of the civil conflict in the region (ââ¬Å"World Food Programmeâ⬠1). Moreover, other humanitarian agencies offers clean drinking water to about 1.1 million people in Syria (ââ¬Å"Government of Canadaâ⬠1). Notably, most of the countries in the Middle East region are downstream riparian states and have scarce water resources and hence the continued debate and conflict on water issues in this region (ââ¬Å"The Turkish Ministry of Foreign Affairsâ⬠1). Ideally, agriculture accounted for about 25 percent of gross domestic product in this region and hence the water shortage is hindering efforts to maintain economic growth in this region (Williams 1). The water conflict is equally a source of tension as many countries including Syria seek to increase its political dominance where it competes for the water resources with Turkey, Iraq, and Israel. Analysis shows that Turkey is likely to face water shortages in the near future although it presently has significant water resources (ââ¬Å"The Turkish Ministry of Foreign Affairsâ⬠2). As a result, of the crisis there have been continued debates and efforts geared towards addressing the Syrian crisis. In the meantime, many Syrians fled the violence in their country and took refuge in Turkey, Jordan, Egypt, Lebanon, and Iraq (ââ¬Å"World Food Programmeâ⬠1). Indeed, about 2.2 million Syrians are refugees in these countries, which further strain the infrastructure, food security, and water supply in this region. Additionally, more countries including the U.S are still offering the refugees agencies a leeway to settle more refugees and conflict victims in Syria thus influencing the social and economic aspects in Syria. However, as we expect the need for humanitarian aid to increase in Syria over the next few years, there is international pressure on the Syrian president, Bashar al-Assad, to remove bar riers to the delivery of humanitarian assistance in Syria (Cumming-Bruce 1). Saudi Arabia has been opposing the Syrian government and continuously calls for action against Syrian President Assad (ââ¬Å"BBC NEWSâ⬠1). On the other hand, Iran has been supporting Syria and criticizes any international action on the current crisis in Syria. Nevertheless, although Iraq is less significant to Syria, it opposes any US military action in Syria and hosts a significant number of refugees from Syria. Conversely, Israel does not offer its public opinion on the Syrian crisis but warns other nations into dragging Israel into the conflict and assert its readiness to deal with the crisis if the civil war extends to Israel (ââ¬Å"BBC NEWSâ⬠1). Additionally, Qatar supports the proposed military action on Syria while Egypt opposes any military action without the authorization of the UN (ââ¬Å"BBC NEWSâ⬠1). Jordan supports limited military action in Syria upon proving the use of che mical weapons in Syria by the US Congress (ââ¬Å"BBC NEWSâ⬠1). Indeed, Jordan hosts refugees from Syria and therefore opposes any international intervention that would cause civilian casualties. The Jordan government advocates for a political settlement to the Syrian crisis (ââ¬Å"BBC NEWSâ⬠1). Nevertheless, some people believe that in 2013, Jordan facilitated the supply of weapons to rebel fighters in southern Syria (ââ¬Å"
Monday, February 3, 2020
Three topics every topic one page Essay Example | Topics and Well Written Essays - 750 words
Three topics every topic one page - Essay Example As early as the 1820s the United States instituted reform measures aimed at curbing slavery throughout the country. For instance, the Missouri Compromise, established in 1820, outlawed the practice of slavery in any of the territories acquired in the Louisiana Purchase. While the Missouri Compromise constituted a major reform measures, undoubtedly another of the most prominent reform measures was the Compromise of 1850. The Compromise of 1850 established a number of reform measures aimed to curb the then boiling tensions regarding slavery. This compromise specifically indicated that Washington D.C. would not become a slave state and that the Southern wish to involve California in the slave trade was also prohibited. Conversely, the act granted the southern states a strong fugitive slave act, which ensured escaped slaves would be returned. Ultimately, however, while these reform measures put off the eventual war, they would not be enough to stop the significant sectional crisis that e merged. 2. The mid-19th century American division between the northern and southern states over slavery came to be referred to as the sectional crisis. The sectional crisis divided the nation along geographic lines and created new divisions that the nation had never previously experienced. This essay argues that the
Sunday, January 26, 2020
Cyclic Voltammetry Principle
Cyclic Voltammetry Principle Cyclic voltammetry is the most widely used technique for acquiring qualitative information about electrochemical reactions [34, 35]. The power of cyclic voltammetry results from its ability to provide considerable information on the thermodynamics and kinetics of heterogeneous electron transfer reactions [47, 48], and coupled chemical reactions [36, 37]. It also provides mathematical analysis of an electron transfer process at an electrode [41, 49, 50]. Basic Principle of Cyclic voltammetry An electron transfer process with a single step may be represented as; O + ne à ¢Ã¢â¬ ¡Ã¢â¬ ¹ R (2.1) where O and R are oxidized and reduced form of electoractive species respectively, which either is soluble in solution or absorbed on the electrode surface and are transported by diffusion alone. Cyclic voltammetry consists of scanning linearly the potential of a stationary working electrode (in an unstirred solution), using a triangular potential waveform. Depending on the information sought, single or multiple cycles can be used. During the potential sweep, the potentiostat measures the current resulting from the applied potential. The resulting plot of current vs. potential is termed as cyclic voltammogram. The excitation signal in cyclic voltammetry is given in Fig. 2.1a. Initially the potential of the electrode is Ei. Then the potential is swept linearly at the rate of ÃŽà ½ volts per second. In cyclic voltammetry reversal technique is carried out by reversing direction of scan after a certain time t =ÃŽà » .The potential at any time E (t) is given by E (t) = Ei ÃŽà ½t t E (t) = Ei 2ÃŽà ½ÃŽà » + ÃŽà ½t tà ¢Ã¢â¬ °Ã ¥ÃŽà » (2.2b) HereÃŽà ½ is scan rate in V/s. The shape of the resulting cyclic voltammogram can be qualitatively explained as follows: When potential is increased from the region where oxidized form O is stable, cathodic current starts to flow as potential approaches E0 for R/O couple until a cathodic peak is reached. After traversing the potential region in which the reduction process takes place, the direction of potential sweep is reversed. The reaction-taking place in the forward scan can be expressed as O + e- à ¢Ã¢â¬ ââ¬â¢ R During the reverse scan, R molecule (generated in the forward half cycle, and accumulated near the surface) is reoxidized back to O and anodic peak results. R à ¯Ã¢â¬Å¡Ã ¾Ã ¯Ã¢â¬Å¡Ã ® O + e- In the forward scan as potential moves past Eo, the near-electrode concentration of O falls to zero, the mass transfer of O reaches a maximum rate, in unstirred solution, this rate then declines as the depletion of O further and further from electrode takes place. Before dropping again current passes through a maximum. Reversal of scan repeats the above sequence of events for the oxidation of electrochemically generated R that now predominates in near-electrode region. The continuous change in the surface concentration is coupled with an expansion of the diffusion layer thickness (as expected in the quiescent solutions). The resulting current peaks thus reflect the continuous change of the concentration gradient with time, hence, the increase to the peak current corresponds to the achievement of diffusion control, while the current drop (beyond the peak) exhibits a t-1/2 dependence (independent of the applied potential). For the above reasons, the reversal current has the same shape as the forward one. Electrochemical Cell Electrochemical cell is a sealed vessel which is designed to prevent the entry of air. It has an inlet and outlet to allow the saturation of solution with an inert gas, N2 or Ar. Removal of O2 is usually necessary to prevent currents due to the reduction of O2 interfering with response from system under study. The standard electrochemical cell consists of three electrodes immersed in an electrolyte; Working electrode (WE) Reference electrode (RE) Counter electrode (CE) Working Electrode (WE) The performance of the voltammetric procedure is strongly influenced by the working electrode material. Since the reaction of interest (reduction or oxidation) takes place on working electrode, it should provide high signal to noise characteristics, as well as a reproducible response. Thus, its selection depends primarily on two factors: the redox behaviour of the target analyte and the background current over the potential region required for the measurement. Other considerations include the potential window, electrical conductivity, surface reproducibility, mechanical properties, cost, availability and toxicity. A range of materials have found application as working electrodes for electroanalysis, the most popular are those involving mercury, carbon or noble metals (particularly platinum and gold). Reference Electrode (RE) This functional electrode has a constant potential so it can be used as reference standard against which potential of other electrode present in the cell can be measured. Commonly used reference electrodes are silver-silver chloride or the calomel electrode. Counter of Auxiliary Electrode (CE) It is also termed as auxiliary electrode and serves as source or sink for electrons so that current can be passed from external circuit through the cell. The potential at WE is monitored and controlled very precisely with respect to RE via potentiostat. This may be controlled in turn via interfacing with a computer. The desired waveform is imposed on the potential at the WE by a waveform generator. The potential drop V is usually measured by the current flowing between the WE and CE across a resistor R (from which (I=V/R), the latter connected in series with the two electrodes. The resulting I/V trace, termed as a voltammogram is then either plotted out via an XY chart recorder or, where possible, retained in a computer to allow any desired data manipulation prior to hard copy being taken. Single Electron Transfer Process Three types of single electron transfer process can be studied. Reversible process Irreversible process Quasi-reversible process Based on values of electrochemical parameters, i.e. peak potential Ep, half peak potential (Ep/2), half wave potential (E1/2), peak current (ip), anodic peak potential Epa, cathodic peak potential Epc etc, it can be ascertained whether a reaction is reversible, irreversible or quasi-reversible. Ep is the potential corresponding to peak current ip, Ep/2 is the potential corresponding to 0.5 ip, E1/2 is the potential corresponding to 0.85 ip. Theseà electrochemical parameters can be graphically obtained from the voltammogram as shown in the Fig. 2.2. Reversible Process The heterogeneous transfer of electron from an electrode to a reducible species and vice versa O + ne à ¢Ã¢â¬ ¡Ã¢â¬ ¹ R is a form of Nernstian electrode reaction with assumption that at the surface of electrode, rate of electron transfer is so rapid that a dynamic equilibrium is established and Nernstian condition holds i.e. CO(0,t) à ¢Ãâ â⬠¢ CR(0,t) = Exp[(nFà ¢Ãâ â⬠¢RT)(Ei-ÃŽà ½t-Eo)] (2.3) In equation (2.3), Co and CR are concentration of oxidized and reduced species at the surface of electrode as a function of time, Eo is the standard electrode potential, Ei is the initial potential and ÃŽà ½ is the scan rate in volts per second. Under these conditions, the oxidized and reduced species involved in an electrode reaction are in equilibrium at the electrode surface and such an electrode reaction is termed as a reversible reaction. Current Expression Due to difference in concentration of electroactive species at the surface of electrode and the concentration in the bulk, diffusion controlled mass transport takes place. Ficks second law can be applied to obtain time dependent concentration distribution in one dimension of expanding diffusion layer. à ¢Ãâ ââ¬Å¡Ci(x, t) à ¢Ãâ â⬠¢Ã ¢Ãâ ââ¬Å¡t = Dià ¢Ãâ ââ¬Å¡2Ci(x, t) à ¢Ãâ â⬠¢Ã ¢Ãâ ââ¬Å¡x2 (2.4) Peak current is a characteristic quantity in reversible cyclic voltammetric process. The current expression is obtained by solving Ficks law [51]. i = nFACo*(à â⠬Doa)1/2 à â⬠¡(at) (2.5) where i = current, n = number of electrons transferred, A is the area of electrode, Co* is the bulk concentration of oxidized species, Do is the diffusion coefficient, à â⬠¡ (at) is the current function and a = nFÃŽà ½/RT At 298K, function à â⬠¡(at) and the current potential curve reaches their maximum for the reduction process at a potential which is 28.5/n mV more negative than the half wave potential i.e. at n(Ep-E1/2) = 28.50 mV, à â⠬1/2à â⬠¡(at) = 0.4463 ( Table 2.1). Then the current expression for the forward potential scan becomes (2.6) where ip is the peak current or maximum current. Using T=298K, Area (A) in cm2, Diffusion coefficient (Do) in cm2/s, concentration of species O (Co*) in moles dm-3 and Scan rate (ÃŽà ½) in volts sec-1, equation (2.6) takes the following form, (2.7) Equation (2.7) is called Randles Sevick equation [39, 40]. Diagnostic Criteria of Reversibility Certain well-defined characteristic values can be obtained from the voltammogram, for a reversible electrochemical reaction. Relationship between peak potential (Ep) and half wave potential (E1/2) for a reversible reaction is given by, (2.8a) (2.8b) Where E1/2 is potential corresponding to i = 0.8817ip [41]. At 298 K (2.8c) From equations (2.8a) and (2.8b) one obtains, (2.9a) At 298K (2.9b) The peak voltage position does not alter as scan rate varies. In some cases, the precise determination of peak potential Ep is not easy because the observed CV peak is somewhat broader. So it is sometimes more convenient to report the potential at i = 0.5ip called half peak potential, which can be used for E1/2 determination [52]. (2.10a) At 298 K (2.10b) (2.10c) From equations (2.8a) and (2.10a) we obtain, (2.11a) At 298K (2.11b) The diagnostic criterion of single electron transfer reversible reaction is often sufficient to get qualitative as well as quantitative information about the thermodynamic and kinetic parameters of the system. For a reversible system, should be independent of the scan rate, however, it is found that generally increases with à ¯Ã à ®. This is due to presence of finite solution resistance between the reference and the working electrode. Irreversible Process For a totally irreversible process, reverse reaction of the electrode process does not occur. Actually for this type of reaction the charge transfer rate constant is quite small, i.e. ksh à ¯Ã¢â¬Å¡Ã £ 10-5cm sec-1, hence charge transfer is extremely low and current is mainly controlled by the rate of charge transfer reaction. Nernst equation is not applicable for such type of reaction. The process can be best described by the following reaction O + ne à ¯Ã¢â¬Å¡Ã ¾Ã ¯Ã¢â¬Å¡Ã ® R Delahay [51] and later on Mastuda, Ayabe [48], and Reinmuth [53] described the stationary electrode voltammetric curves of the irreversible process. Irreversibility can be diagnosed by three major criteria. A shift in peak potential occurs as the scan rate varies. Half peak width for an irreversible process is given by (2.12) Here ÃŽà ± is transfer coefficient and na is the number of electrons involved in rate determining step of charge transfer process. At 298K (2.13) Current expression is given as, i = nFACo*(à â⠬Dob)1/2 à â⬠¡(bt) (2.14) The function à â⬠¡(bt) goes through a maximum at à â⠬1/2à â⬠¡(bt) = 0.4958.(Table 2.2). Introduction of this value in equation (2.14) yields the expression (2.15) for the peakà current. A plot of ln ip vs. (Ep-Eo) for different scan rates would be a straight line with a slope proportional to -à ¯Ã à ¡naF and an intercept proportional to ks,h. Quasi-reversible Process Quasi-reversible process is termed as a process which shows intermediate behaviour between reversible and irreversible processes. Both charge transfer and mass transfer control current of the reaction. For quasi-reversible process value of standard heterogeneous electron transfer rate constant, ks,h lies between 10-1 to 10-5 cm sec-1[42]. Cyclic voltammogram for quasi-reversible process is shown in Fig. 2.3. An expression relating the current to potential dependent charge transfer rate was first provided by Matsuda and Ayabe [48]. (2.17) where, ksh is the heterogeneous electron transfer rate constant at standard potential Eo of redox system,is the transfer coefficient and à ¯Ã à ¢ = 1- à ¯Ã à ¡. In this case, the shape of the peak and the various peak parameters are functions of à ¯Ã à ¡ and the dimensionless parameter à ¯Ã Ã
â, defined as [54] (2.18) For quasi-reversible process current value is expressed as a function of. (2.19) where is expressed as (2.20) is shown in Fig. 2.4. It is observed that when à ¯Ã Ã
â > 10, the behavior approaches that of a reversible system. It is observed that for a quasi-reversible reaction, ip is not proportional to à ¯Ã à ®1/2. For half peak potential we have at 298K (2.21) This implies, These parameters attain limiting values characteristic of reversible or totally irreversible processes as à ¯Ã Ã
â varies. For à ¯Ã Ã
â >10, à ¯Ã ââ¬Å¾(à ¯Ã Ã
â,à ¯Ã à ¡) = 2.2 which gives Ep-Ep/2 = 56.5mV (value characteristic of a reversible wave). For Variation of ÃŽâ⬠with ÃŽâ⬠º and ÃŽà ± is shown in Fig. 2.5. For three types of electrode processes Matsuda and Ayabe [48] suggested following zone boundaries. a) Reversible (Nernstian) ÃŽâ⬠ºÃ ¯Ã¢â¬Å¡Ã ³15; ksh à ¯Ã¢â¬Å¡Ã ³ 0.3 à â⬠¦1/2cm s-1 b) Quasi-Reversible 15à ¯Ã¢â¬Å¡Ã ³ ÃŽâ⬠º à ¯Ã¢â¬Å¡Ã ³ 10-2 (1+ÃŽà ±); 0.3 à â⬠¦1/2 à ¯Ã¢â¬Å¡Ã ³ ksh à ¯Ã¢â¬Å¡Ã ³ 2 10-5 à â⬠¦1/2 cm s-1 c) Totally Irreversible ÃŽâ⬠º Source: Bard, A.J.; Faulkner, L.R. Electrochemical Methods, Fundamentals and Applications, John Wiley, New York, 1980, pp 225. Source: Bard, A.J.; Faulkner, L.R. Electrochemical Methods, Fundamentals and Applications, John Wiley, New York, 1980, pp 227. Multi Electron Transfer Process Multi-electron transfer process usually takes place in two separate steps. Two-steps mechanism, each step characterized by its own electrochemical parameters is called EE mechanism. Stepwise reversible EE mechanism is given by following reaction, A + n1e à ¢Ã¢â¬ ¡Ã¢â¬ ¹ B (E10) (2.22a) B + n2e à ¢Ã¢â¬ ¡Ã¢â¬ ¹ C (E20) (2.22b) where, A and B are electroactive species and n1 and n2 are the number of electrons involved in successive steps. If A and B react at sufficiently separated potentials with A more easily reducible than B, the voltammogram for overall reduction of A to C consists of two separated waves. The first wave corresponds to the reduction of A to B with n1 electrons and in this potential range the substance B diffuses into the solution. As potential is scanned towards more cathodic values, a second wave appears which is made up of two superimposed parts. The current related to substance A, which is still diffusing toward electrode increases since this species now is reduced directly to substance C by (n1+n2) electrons. In addition, substance B, which was the product of the first wave, can be reduced in this potential region and a portion of this material diffuses back towards the electrode and reacts. Each heterogeneous electron transfer step is associated with its own electrochemical parameters i.e. ks,hi and ÃŽà ±i, where i =1, 2 for the 1st and 2nd electron transfer respectively. Based on the value of à ¯Ã ââ¬Å¾Eo, we come across three different types of cases [50] as shown in the Fig. 2.6. Types of Two Electron Transfer Reactions [50] Case 1: Separate Peaks When à ¯Ã ââ¬Å¾Eo à ¯Ã¢â¬Å¡Ã ³ -150mV the EE mechanism is termed as disproportionate mechanism [55]. Cyclic voltammogram consists of two typical one-electron reduction waves. The heterogeneous electron transfer reaction may simultaneously be accompanied by homogenous electron transfer reactions, which in multi-electron system leads to disproportionation. Each disproportionation reaction can be described as, 2R1 à ¢Ã¢â¬ ¡Ã¢â¬ ¹ O+ R2 (2.23) The equilibrium constant K (disproportionation constant) is given by (2.24) It can be derived from the difference between the standard potentials using (2.25) Case 2: In this case, the individual waves merge into one broad distorted wave whose peak height and shape are no longer characteristics of a reversible wave. The wave is broadened similar to an irreversible wave, but can be distinguished from the irreversible voltammogram, in that the distorted wave does not shift on the potential axis as a function of the scan rate. Case 3: = 0mV Single peak In this case, in cyclic voltammogram, only a single wave would appear with peak current intermediate between those of a single step one electron and two electron transfer reactions and Ep-Ep/2 = 21 mV. Case 4: E1o If the energy required for the first second electron transfer is less than that for the first, one wave is observed having peak height equal to 23/2 times that of a single electron transfer process. In this case, Ep E1/2 = 14.25 mV. The effective E0 for the composite two electron wave is given by [50]. Source: Polcyn, D.S.; Shain, I. J. Anal. Chem. 1966, 38, 370. Cyclic Voltammetric Methods for the Determination of Heterogeneous Electron Transfer Rate Constant Cyclic voltammetry provides a systematic approach to solution of diffusion problems and determination of different kinetic parameters including ks,h. Various methods are reported in literature to determine heterogeneous rate constants. Nicholson [41, 42], Gileadi [56] and Kochi [37] developed different equations to calculate heterogeneous electron transfer rate constants. Nicholsons Method [41, 42] Nicholson derived an expression for determination of heterogeneous electron transfer rate constant ksh. This method is based on correlation between and ks,h through a dimensionless parameter by following equation, (2.26) where is scan rate. for different values of ÃŽâ⬠Ep can be obtained from the Table 2.3. Hence, if ÃŽâ⬠Ep (Epa-Epc) is determined from the voltammogram, can be known from Table 2.3. From the knowledge of, , ksh can be calculated using equation (2.27). If D o= DR then ÃŽà ³=1 (2.27) This method is applied for voltammograms having peak separation in the range of 57mV to 250mV, and between this range, the electrode process progresses from reversible to irreversible. With increasing scan rate, the peak separation and hence à Ãâ decreases. It can be seen from the Table 2.3, that for reversible reactions i.e. for the current voltage curves and is independent of . For totally irreversible reaction i.e. for the back reaction becomes unimportant, anodic peak and is not observed. For quasi-reaction i.e. for 0. 001 Separation of cathodic and anodic peak potential as a function of the kinetic parameter à ¯Ã à ¹ in the cyclic voltammogram at room temperature. Kochis Method Kochi and Klinger [37] formulated another correlation between the rate constant for heterogeneous electron transfer and peak separation. The expression for ksh given by Kochi was (2.28) The standard rate constant ksh can be calculated from the difference of peak potentials and the sweep rates directly. This equation applies only to sweep rates which are large enough to induce electrode irreversibility. The relation derived by Kochi is based on following expressions derived by Nicholson and Shain [41]. (2.29a) (2.29b) where ÃŽà ² = 1-ÃŽà ± , and à â⬠¦ is the scan rate. Equations (2.29a) and (2.29b) yield (2.30) This expression is used for the determination of the transfer coefficient. Assuming that (for reversible reaction). We have, (2.31) Gileadis Method Gileadi [56] formulated a more sophisticated method for the determination of heterogeneous electron transfer rate constant, ks,h, using the idea of critical scan rate, c. This method can be used in the case where anodic peak is not observed. When reversible heterogeneous electron transfer process is studied at increasing scan rates, peak potential values also vary and process progresses towards irreversible. If are plotted against the logarithm of scan rates, a straight line at low scan rates and ascending curve at higher scan rate is obtained. Extrapolation of both curves intersects them at a point known as toe. This toe corresponds to the logarithm of critical scan rate, c. as shown in Fig. 2.7. Hence critical scan rate can be calculated experimentally. ks,h can be calculated as, (2.32) where à â⬠¦c is the critical scan rate, ÃŽà ± is a dimensionless parameter, called transfer coefficient and Do is the diffusion coefficient. Coupled Chemical Reactions Although charge transfer processes are an important part of entire spectrum of chemical reactions, they seldom occur as isolated elementary steps. Electron transfer reactions coupled with new bond formation or bond breaking steps are very frequent. The occurrence of such chemical reactions, which directly affect the available surface concentration of the electroactive species, is common to redox processes of many important organic and inorganic compounds. Changes in the shape of the cyclic voltammogram resulting from the chemical competition for the electrochemical reactantà or product, can be extremely useful for elucidating the reaction pathways and for providing reliable chemical information about reactive intermediates [35]. It is convenient to classify the different possible reaction schemes in which homogeneous reactions are associated with the heterogeneous electrons transfer steps by using letters to signify the nature of the step. E represents an electron transfer at the electrode surface, and C represents a homogenous chemical reaction. While O and R indicate oxidized and reduced forms of the electroactive species, other non electroactive species which result from the coupled chemical complication are indicated by W, Y, Z, etc [57]. The order of C with respect to E then follows the chronological order in which the two events occur [58]. So according to sequence of step, the systems are classified as EC, ECE, CE etc. These reactions are further classified on basis of reversibility. For example, subclasses of EC reactions can be distinguished depending on whether the reactions are reversible (r), quasi-reversible (q), or irreversible (i), for example Er Cr, ErCi, EqCi, etc. Two Steps Coupled Chemical Reactions In two steps reactions, a variety of possibilities exist, which include chemical reactions following or preceding a reversible or an irreversible electron transfer [59, 60, 61, 62]. The chemical reactions themselves may be reversible or irreversible. a) Preceding Chemical Reactions (CE) In a preceding chemical reaction, the species O is the product resulting from a chemical reaction. Such a reaction influences the amount of O to be reduced so forward peak is perturbed. For a preceding chemical reaction, two mechanisms are possible, depending on whether the electron transfer is reversible CrEr or irreversible CrEi [58]. Reversible Electrode Process Preceded by a Reversible Chemical Reaction (CrEr Reaction) The process in which a homogeneous chemical reaction precedes a reversible electron transfer is schematized as follows: (2.33) where Y represents the non electroactive species and O and R are the electroactive congeners. Since the supply of electroactive species O results from the chemical reaction, it is important to know that how much of O is formed during the time scale of cyclic voltammogram. In this connection, it must be noted that the time scale of voltammetry is measured by the parameter a = nFà â⬠¦/RT for a reversible process and b = ÃŽà ±naFà â⬠¦/RT for a quasi reversible or an irreversible process It means that the time scale of cyclic voltammetry is a function of the scan rate, in the sense that higher the scan rate, the higher is the competition of the voltammetric intervention with respect to the rate of chemical complication. The limit at which the chemical complication can proceed is governed either by the equilibrium constant K or the kinetics of the homogeneous reaction (l = kf+kr). In this regard, it is convenient to distinguish three limiting cases depending on the rate of chemical complication [41]. Slow preceding chemical reaction (kf+kr When K is large (i.e. K > 20) most of O will already be present in solution, the response is apparently not disturbed by the latter, i.e. it appears as a simple reversible electron transfer. When K is small, the small electron transfer again appears as a simple reversible process except that the peak current will be smaller than is expected on the basis of quantity of Y in the solution. This results because the concentration of the electroactive species CO, being determined by the equilibrium of the preceding reaction is equal to a fraction of species Y placed in the solution. where C* = CO (x,0) +CY(x,0) Fast preceding chemical reaction (kf+kr >> nFà â⬠¦/RT) When K is large, once again the response appears as a simple reversible electron transfer, but the measured standard potential Eo/* is shifted toward more negative values compared to the standard potential Eo/ of the couple O/ R by a factor of . When K is small, because of the fast continuous maintaining of the small equilibrium amount of O, the complete depletion of O at the electrode surface will never be reached, so that the forward profile no longer maintains the peak shape form, rather assumes a sigmoidal S-shaped curve, the height of which remains constant at all scan rates. Intermediate preceding chemical reaction (kf+kr = nFà â⬠¦/RT) In this case, the kinetics can be studied using the ratio between the kinetic and the diffusive currents according to the relationship (2.34) Irreversible Electrode Process Preceded by a Reversible Chemical Reaction (CrEi Reaction) This process is schematizes as. (2.35) In this case, not only the thermodynamic K (kf / kr) and kinetic (kf + kr) parameters of preceding chemical reaction but also the kinetic parameters of the electron transfer (ÃŽà ±, k0) play a role. Obviously the lack of reverse peak is immediately apparent, due to the irreversibility of the charge transfer. The curves are also more drawn out because of the electron transfer coefficient, ÃŽà ±. Slow preceding chemical reaction (kf+kr In this case, the process appears as a simple irreversible electron transfer. The peak height of the process depends on the equilibrium constant because, as mentioned in the previous case, the concentration of the active species CO is a fraction of the amount C* put in the solution: Fast preceding chemical reaction (kf+kr >> nFà â⬠¦/RT) If instead the reaction kinetics is fast, there are two possibilities: If K is large, again the response appears as if the preceding chemical reaction would be absent. However, the peak potential is shifted towards more negative values than those that would be recorded in the absence of the chemical complication by a factor equal to . If K is small, as in the preceding case, an easily recognizable S-like curve voltammogram is obtained having a limiting current independent from the scan rate (2.36) Intermediate preceding chemical reaction (kf+kr = nFà â⬠¦/RT) Here again, the kinetics can be studied using the ratio between the kinetic and diffusive currents according to the relationship (2.37) b) Following Chemical Reactions (EC) The process in which the primary product of an electron transfer becomes involved in a chemical reaction is indicated by EC mechanism. It can be represented by O + ne à ¢Ã¢â¬ ¡Ã¢â¬ ¹ R R à ¢Ã¢â¬ ¡Ã¢â¬ ¹ Z (2.38) where O and R are the electroactive congeners and Z represents the non electroactive species. Several situations are possible depending on the extent of electrochemical reversibility of the electron transfer and on the reversibility or irreversibility of the chemical reaction following the electron transfer. As a general criterion, in cyclic voltammetry, the presence of a following reaction has little influence on the forward peak, whereas it has a considerable effect on the reverse peak. Reversible Electrode Process Followed by a Reversible Chemical Reaction (ErCr Reaction) ErCr mechanism can be written as (2.39) Once again the voltammetric response will differ to a greater or lesser extent with respect to a simple electron transfer depending on the values of either the equilibrium constant, K, or the kinetics of the chemical complication (kf+kr) [58]. Analogously to that discussed for preceding equilibrium reactions, three limiting cases can be distinguished. Slow following chemical reaction (kf+kr If the rate of chemical reaction is low, it has a little effect on the process, thus reducing it a simple reversible electron transfer. Fast following chemical reaction (kf+kr >> nFà â⬠¦/RT) If the rate of the chemical complication is high, the system will always be in equilibrium and the voltammogram will apparently look like a non complicated reversible electron transfer. However, as a consequence of the continual partial removal of the species R from the electrode surface, the reduction occurs at potential values less negative than that of a simple electron transfer by an amount of . Due to the fast kinetics of the chemical complication, the potential will remain at this value regardless of the scan rate. Intermediate following chemical reaction (kf+kr=nFà â⬠¦/RT) If the kinetics of the chemical reaction are intermediate with the scan rate the response gradually shifts from previous value for a fast chemical reaction [which was more anodic by w.r.t. to value of the couple O/R] towards the Eo/ value assuming more and more the values predicted by the relationship (2.40) In other words, the response (which for the fast kinetics is more anodic compared to E0/) due to the competitive effects of the potential scan rate moves towards more cathodic values by 30/n (mV) for every ten fold increase in the scan rate. However, it is noted that at the same time, the reversible peak tends to disappear, in that on increasing the scan rate, the species Z does not have time to restore R. This is demonstrated by the current ratio which is about one at low scan rates, but it tends to zero at high scan rates. Reversible Electrode Process Followed by an Irreversible Chemical R
Saturday, January 18, 2020
Communication Barries Essay
Communication is the imparting or exchanging information and news with people around us. Therefore, communication is an important theme for our daily life. Without communications well in this generation, people may cause conflict between each other. Communication as well contains barriers like non-verbal signals, language, pre-judgement, relationships, listening, systems and emotional responses. According to my past communication barriers that I have experienced, in the past, I do not know how to speak or read in Chinese because I have study and use to the environment there in English primary school since I was young. After I finished my primary school, I entered the secondary school. I have found out that I am having difficulties to communicate with my schoolmates and teacher and they canââ¬â¢t communicate well with me. Moreover, in the secondary school now, as a Chinese student, the Chinese students are compulsory to attend Chinese classes and take the Chinese subject as a main subject other than the bahasa subject. Not just that, I often having misunderstanding with my classmates with my language too. Next, I have also found that their lifestyle was totally different from me. For example, every Friday, the Muslimââ¬â¢s student will have to go for their pray in the noon of 12pm so that we also have to stop our class lesson on 12pm every Friday. In this situation, I have analyzed the problem that I am not use to it in my secondary school. First of all, I am having the problem of one of the communication barrier, language. The meaning in English to Chinese and Malay have various of different meaning that I canââ¬â¢t crop up and sometimes I could misunderstanding what are they trying to send me a message in a conversation. Next, the cultural problem. I may have not use to their cultural in the Malay secondary school. For example, I did not know that in the Chinese culture of sending them clock as a gift by meaning sending them off to death. Not just that, I have found out that Malay could not eat non-halal foods while the Chinese canââ¬â¢t eat cows. Lastly, the listening problem. As I use to the Englishââ¬â¢s school environment, sometimes I could misunderstand of my classmate speak to me. It is hard for me to crop up by sudden changing of my environment lifestyle. In order for me to encounter that I faced, I have been study and doing some research of language in my secondary school. I was impelled to follow up to the tuition classes to strengthen my Chinese and Malayââ¬â¢s language. Not just that, during my school time, I was practicing language with my classmates or even noted down that words to look for the dictionary to find out the meaning. As for the cultural problem, my classmates told me about their cultural lifestyle during recess or free time. I have learned one of the Malayââ¬â¢s lifestyle of eating by using the right hand. Moreover, if there any special occasion, my classmate would invite me to their house to celebrate with them so that I could easily understand their culture. Lastly, the listening, I encountered the problem by asking them to repeat or explain of what are they trying to message me during our conversation.
Friday, January 10, 2020
Importance of Correlation Analysis in Decision Making
National language. Language plays an important role in the process of fostering unity among the races. Thus, the government has made Malay as the national language of our country. National Language Act 1967 has been allocated the Malay language as the official language. Starting in 1970, the discussion between the leaders has gradually replaced English as the medium of instruction in schools.Governments also undertook a campaign to promote the use of Malay with the launch of ââ¬Å"Gerakan Cintailah Bahasa Kebangsaanâ⬠. Unity is an essential element for a country to be more advanced. In order to improve the quality of a country in all aspect, the citizen playing the most important roles. For an example, Malaysia is independent with the unity of people of different races in 1957. This shows that a country will not be established without the true unity among the people.If one country has no unity where people is not trusting one another, the country will fall apart and lead to the the internal strife among the people. An dramatic example is the issue of the races riot happened on May 13,1969 in Malaysia. The internal conflict had caused 2000 people kill. This brings awareness to Malaysian that people without the true unity and the no trustworthy is capable to ruin a country. So we should turn our face to the sun and the shadows fall behind us.In order to avoid infighting among people, the spirit of unity should be planted in our souls. National language is important in every country as it is not only allow communication among the people but also increase the understanding of different ethnics among different races. National language plays an important role in the process of fostering unity among the races. This is because toleration and trustworthy among each other is needed to unite the people through understanding.
Thursday, January 2, 2020
Discuss the Extent to Which Developmental Psychology Has...
This essay will explore how developmental psychology has improved the lives of children diagnosed with specific learning difficulties (SpLD). It will explore how these improvements have been made from diagnosis to assessments, consequences to intervention. Dyslexia refers to a specific difficulty in learning to read and write. However this is not the only difficulty that children with dyslexia experience and there are variations of their symptoms. These problems appear to stem from fundamental difficulties in the rapid processing and sequencing of phonological information in short term memory. These children also have difficulties with associations with letters and their sounds. Learning their left from right also is difficult. In theâ⬠¦show more contentâ⬠¦It is possible that two people with the same atypical brain development may present with differing symptoms as a result of the influence of environmental factors. As a result it is difficult to identify a single biological cause for SpLD. Developmental psychologists have been able to identify a range of factors that appear to contribute to the causes of SpLDs. Heritability may be another factor which influences the presentation of SpLDs. Dyslexia and dyspraxia both appear to have a familial form where parents and siblings also present with these conditions. The extent of heritability has been highlighted through the use of twin studies; both monozygotic and dizygotic. Stevenson (1999) found that heritability was between 46 and 74 per cent chance, which highlights there is some influence from environment as well as genetic factors. Further research has highlighted how some genes on the chromosome are associated with phonological processing and other genes on other chromosomes are associated with reading. Assessments are a key way developmental psychologists are able to further understand children with SpLD, and can then identify and conclude the severity of the SpLD. It is through assessment that developmental psychologists can start to do the most help with improving childrens lives. By assessing them for their SpLD the psychologist can start to make way for the child to gain extra support in schoolShow MoreRelatedImaginative Play9679 Words à |à 39 PagessychChildrenââ¬â¢s Imaginative Play: A Descriptive Psychology Approach Charles Kantor, Ph.D. Abstract The signiï ¬ cance of childrenââ¬â¢s imaginative play is presented from the perspective of Descriptive Psychology and in particular Ossorioââ¬â¢s Dramaturgical model of persons. The ï ¬âuidity of imaginative play, the imitation of and creation of social practices and options within play as well as the opportunity to switch roles and act according to reasons of another, contribute to the development of judgment. 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