Harlem Renaissance Essay Example for Free

Harlem reincarnation EssayThe Harlem renascence was a significant counterbalancet in the history of the United States of America. The Harlem Renaissance focus on on the nicety of blacks and took place at the end of the American Civil War in 1865. This age gave rise to music, art, and literature in African-American culture.Winning the Civil War meant that African American were this instant free and could, at their risk, go anywhere they wanted. This is when the Great Migration all started. The Great Migration was when large groups of blacks moved in Northern cities like Chicago and New York in massive numbers for jobs because the South had been victim to a crop infestation. Many of them moved particularly to a large neighborhood located in the northern section of Manhattan called Harlem, also known as the capital of black America. By this time, chances for employ handst and instruction were available for African-Americans, and many of them expected the same treatment and life the white Americans had be given.This was not to be the case when Plessy v. Ferguson case went to the Supreme Court and the decision had been held that racial segregation was constitutionally acceptable. African-Americans were heartsick they wanted equality and all they had been given nothing close to the life of the white Americans, not even a secure environment to live. Though they did have some rights, such as, all African-American men could vote, African-Americans, all, could receive better education, and they got better jobs, but that still seemed to be not enough. African-Americans wanted to part shipway with their clingy stereotypes and define themselves as something better. They wanted to be something more than scantily a negro. The African-Americans didnt want to be like their white suppressors, but wanted to create a new meaning to what it meant to be black.outset in the early 1900s the African-American middle class started a push towards racial equality. W.E.B. Du Bois was the central drawing card of the movement. He collaborated with other African-American activists and white civil rights creamers in New York to review the difficult challenges go about the African-American population. 1909 the NAACP, or National Association for the Advancement of Colored People, was found by the group on the job(p) with Du Bois. This group was specifically organized to advocate civil liberties and fight for African-American rights.Although this cause was public opinion to be supported by all African-Americans it was not the case with Jamaica-bred Marcus Garvey. Garvey started the Back to Africa movement, which initially was him saying that he thought all African-Americans should just pack up and leave the states because they werent welcomed. Garvey founded the UNIA-ACL, or Universal lightlessness expediency Association and African Communities League, which promoted the Back to Africa slogan. Garvey said it was to encourage African-Americans to come to gether and feel pride in their roots. These groups, although not all supporting staying and fighting, helped the African-American population develop a sense of empowerment for African-Americans everywhere.The comp allowe Age was an explosion of African-American culture into music. Just at the end of WWI, there was an economy kick upstairs and a change in society. During this time Americans started to relax and take up hobbies. The Prohibition had just been ratified, although it didnt ban alcohol it made it extremely difficult to get, legally. That is when alcohol clubs, called speakeasies were created. Speakeasies gave Americans the chance to socialize with other, engage in drinking, and go against traditional culture. Some might have even called them Modernist.There was a certain speakeasy in Harlem called the Cotton Club. Its them as the look of a plantation in the South. They only allowed African-American musicians to course there and only allowed white Americans, with some e xceptions, wine and dine there. One talented jazz musician would be Duke Ellington. Ellington was a wiz at playing the piano he actually played at the Cotton Club from for four years. His band stomped to theatricality routines in numerous shows.Forms of art gave some African-Americans a break from reality. Artists painted things from African-American nightclubs, to African-American toiling in the fields. Aaron Douglas was a famous artist whose work exercised the New Negro idea. The New Negro idea correlated with Dubois idea of twoness idea, which meant the finding of ones individuality with a divided awareness of ones identity. Douglas painted murals, building, and created illustrations for many African-American books. In 1940 Douglas moved to Nashville and founded the Art Department at Fisk University and taught for twenty nine years there. Douglas said, Our problem is to conceive, develop, free-base an art era. Not white art painting blacklets bare our arms and plunge them deep finished laughter, through pain, through sorrow, through hope, through disap confidential informationment, into the very depths of the souls of our people and drag forth material crude, rough, neglected. then lets sing it, dance it, write it, paint it. Lets do the impossible.Lets create something transcendentally material, mystically objective. Earthy. Spiritually earthy. Dynamic, which means, lets make something incredible out of tragedy. Writing also became a major step in the lead in the Harlem Renaissance, especially since during this time most African-Americans were illiterate. African-American writers talked about the past of black culture. They wrote about slaveholding and the effects it had on society today, etc. Common themes of these books ranged from alienation, to wanting to be individual. The most famous African-American writers include Langston Hughes, Sterling Brown, and Zora Neale Hurston, just to name a few. Zora Neale was a novelist, folklorist, and anthropologis t. She believed in the motto, I want a busy life, a just mind, and a timely end.Zora wrote to preserve African-American traditions and to contribute to new literature. Langston Hughes was a writer who collaborated with Hurston and other artists in his book of poetry entitled The Weary Blues. Hughes also wrote an essay called The Negro Artist and the Racial Mountain, where he told people what he saw as mountains facing African-American writers. In his essay, Hughes mentions a young poet he spoke to and says how the poet wanted to be known as a poet, sort of than a Negro poet, which is clearly understandable since there was still racial tension during this time.In conclusion, the Harlem Renaissance was a major event in the history in the United States of America because it brought a culture together using simple things, like music, art, and literature. If it had not been for the Harlem Renaissance, who knows what mightve happened to the African-American culture, where it mightve been at this point in time without the occurrence of the Harlem Renaissance. It brought together a race that has, over the years, been beaten, cursed at, talked about, and slaughtered for the comfort of others, and just a simple melody of a song was able to bring them closer together aft(prenominal) being ripped apart.

Herbert Mullin Criminal Profile Essay Example for Free

Herbert Mullin Criminal Profile EssayMullin Herbert Mullin was born in Salina California which happens to be the day of remembrance of the 1906 San Francisco temblor as well as Einsteins death. He was the youngest between him and his sibling, Patricia. He was raised by both parents Jean and Bill Mullin. He didnt receive any problems in school he was popular and physically attractive. He had a good childhood but through his life broom he made a lot of wrong decisions that includes drug abuse which aggravated schizophrenia. In proud school he had a lot of friends and was quite popular. He played football and had a squiffy relationship and was voted most likely to succeed.At the age of eighteen he attended Cabrillo College to study design. In the summer of 1967 he graduated with a two year degree in road engineering and enrolled at San Jose State College change his major to philosophy and took on the hippie lifestyle. At the age of cardinal In June 1965 people began to think that his sanity was deteriorating due to the fact that he built a shrine in his bedroom to Dean, his friend that was knock offed in a car accident the summer after graduation. At the age of nineteen he first experienced LSD which lead him to experimenting more with marijuana and LSD.At the age of twenty one he was arrested for possession of marijuana. At the age of 21 at a family dinner he started showing signs of schizophrenia which was aggravated by drug abuse. At the age of twenty two Herbert Mullin began treatment as a resident of the community drug abuse prevention concentrate in Santa Cruz. Later that year Herbert Mullin was committed to the psychiatric ward of San Luis Obispo County General Hospital because with is mental distemper he was a danger to others, himself and gravely disabled. A month later he was diagnosed as a paranoid schizophrenic.He was not one that cared to take his medication. In the summer of 1970 he was diagnosed as a schizo-affective schizophrenia. In 1970 he began blaming his parents for his illness and in result took them out of his will. Herbert killed people believing that if he started to kill people it will lessen the chances of another hurricane happening in his area. He did this by only kill random Caucasians from the age of 4 to 72. He bought his materials to the crime scene such as a gun, knife, and baseball game bat. He was a psychotic visionary. Mullin had no developmental problems according to Erikson.He went through all the stages where he experience love and finding out what personality he wants to embrace. This is the point and time when he realizes that he is a bisexual. The motivation behind it seems to be the fact that he was born the day that Albert Einstein died and the anniversary of San Francisco Earthquake. Freud would have said that he is anticathexis because he gives off the sense that his ego is blocking the socially out of the question needs of id. Mullin for example when he found out that his ta rget moved he went after him and killed him as planned.Afterwards he couldnt resist the urge to go back and kill the messenger who could have been a witness in the killing incident that happened before her and her family. Bibliography * Watts, Vernetta. Californian Guilty in 10 Murder Cases. (1973, August 20). New York Times, P. 10. Mullin, Herbert. N. P. , n. d. Web. 09 May 2013. * Santa Cruz successive Killer, Herbert Mullin, Denied Parole Central Coast News KION/KCBA. Santa Cruz Serial Killer, Herbert Mullin, Denied Parole Central Coast News KION/KCBA. 13 May 2013 * FreudianTheory. About. com Psychology. N. P. , n. d. Web. 16 May 2013.

The Worth and Purpose of Humankind Defined Essay Example for Free

The expenditure and Purpose of Humankind Defined EssayWhat is Imago Dei? Imago Dei is our worth and our purpose be. What does it mean that tenderkind is created in the learn of beau ideal? In what different ways wee theologians defined this term, and what should we regard it to mean today? What rest does it make for those who explore to the authority of Gods word, and what implications does this leave us with both now and for timeless existence? When facial expressioning for the definition of Imago Dei, one can look several places. First, one can look to the interpretations of biblical scholars who maintain commit their time to studying scripture. Second, one can look for themselves all through the script for the definitions and contexts provided. Third, one can look to what the world believes or doesnt believe round Imago Dei, as is unpatterned in both the injustices and humanitarian efforts of our time. Lastly, one can look at their own life- at what they have experienced and how they have lived their lives and discoer what they believe or dont believe about creation created in the flesh of God.Thus said, I shall begin by answering the question, How have Bible assimilators defined Imago Dei? Most scholars agree with a basic outline of Imago Dei as is found in scripture, but there be several different ways of appreciation its context. Theologian Wayne Gruden defines the image of God as The constitution of man that he is like God and represents God (Gruden 1244). In Creeds of delivery boyendom, Biblical scholar Phillip Schaff (1819-1893) explains that being make in the image of God means that God intended for us to pick out him intimately and to be in a reconci take relationship with him. Man was originally formed after the image of God. Hisunderstanding was adorned with a true and saving knowledge of hisCreator, and of spiritual things his heart and will were upright, allhis affections pure, and the building block Man was holy ( Schaff 521). Schaff also notes the importance of knowing Gods design and original think for us before the fall of man.God intended for us to be just like Him- holy, pure, and stainless in his sight (Schaff 521). Scholars of The Evangelical Dictionary of Theology have defined the image of God asa fundamental biblical doctrine, an image that is sullied by sin and that is restored by divine salvation (Elwell 545). Scholar Millard J. Erickson believes that it is critical to understand who God is and who we are to Him. He says, The implications of the image of God should inspire us and company the parameters for our great deal of all humanity (Erickson 170). Erickson believes that the image of God goes beyond the substantive, relational, and functional gather ins and that one must define conclusions from all of scripture. I agree with Erickson that one finds a concise definition of Imago Dei in Gods word. So indeed, what does scripture say about Imago Dei?After much study of the B ible, Scholar Millard Erickson has outlined the places in scripture where Imago Dei has been best defined and explained. The first is in Genesis 126-27 Then God said, allow us make man in our own image, after our likeness, and let them have dominion over the fish of the sea, and over the birds of the air, and over the cattle, and over all the earth, and over every creeping thing that move upon the earth. So God created man in his own image, in the image of God he created him mannish and female he created them. This is recapitulated in Genesis 51 When God created man, he made him in the likeness of God. Then in Genesis 96, we learn Whoever sheds the blood of man, by man shall his blod be shed for God made man in his own image. Here we see that being created in the image of God implies that we have great worth and our lives are valuable to God. From this verse, we also see that abominable human beings continue to bear Gods image. In the New Testament, the learn about the image of God as we learn about Jesus. In James 39, we learn that God hates when we slackness to respect and award each opposite, as those who bear Gods image. With the tongue we bless the passe-partout and Father, and with it we curse men, who are made in the likeness of God.Much of the New Testament also explains that we are conformed to a greater extent and more into Gods image- we blend more like Him through the process of salvation. 2 Corinthians 318 says, And we all, with unveiled face, beholding the glory of the Lord, are being changed into his likeness from one pointedness of glory to another, for this comes from the Lord, who is the Spirit. Erickson explains that from searching scripture, Bible scholars and church leaders have come to accept one or more of three views on the Image of God- the substantive view, the relational view, or thefunctional view. The substantive view states that humankind has many of the same qualities and characteristics as God. These include the physic al, psychological and spiritual likeness of God. The relational view states that we understand what it means to be made in the image of God through knowing him in a personal relationship (Erickson 122). We also get out understand who God is and who we are through human relationships, such as the fill in relationship between a husband and wife (Erickson 123).Even more so, we understand the image of God through knowing the person of Jesus- For Jesus is the very likeness of God, and we become more like God through knowing Christ. The functional view holds that we understand who God is and who we are through what we do. In our dominion over creation and in our being commissioned by Christ to make disciples, we do our best to learn about all that God has given us and to honor God with our lives. We learn about God by following Christs example and by sustainment a life worthy of our calling (Eph. 41). This is the basis of what scripture tells us about what it means to be made in the im age of God. Does everyone have a basic understanding of Imago Dei, then? What does what is going on in the world today, and the way that most tribe treat each other reveal about what people believe about this subject?Let us look at both the good and bad social realities of our culture, and ask ourselves, What does life look like for those who seek to understand and accept what God says about Imago Dei compared to what life looks like for those who do not know God? The advert of atrocities and injustices through time is endless. One does not have to look far to see the evil that has resulted from people rejecting God and oppressing one another. Slavery, war, greed, and oppression- an ocean of these disasters has swept through time, making every child ask why? and how could this be? Today, still, there are injustices to the human race that are hard to understand. In fact, people look everywhere for answers- to the media, to scholars, to historians, and to their leaders, but their se arch is in vain.Their hearts are left burning and throbbing. What then has led to the bullying of children, the gossip, and most frightening, the genocides that never cease to degrade the human race and leave us asking, wherefore? It is this Man has rejected God and does not know who he is, and in turn, they do not know whotheir Creator has intended them to be. The more I see of the world, the more I know I have been spared. In knowing who God is and who he says I am, I have been set free. I am free to forgive, free to love, free to honor, and free to value each person that God has made in his own image.Knowing that every person on earth has infinite worth in Gods sight, so much that he came to earth to die a criminals closing on a cross for their sins, that they might trust Him and be accommodate to the Him who loves them and treasures them more than they could ever imagine- this changes everything. I have seen the difference that believing the truth about God and about me not on ly in my own life, but also in the lives all around me. That others know we are Christians by our love is true in not all, but many communities of believers. When I see love that doesnt look for any in return I know that there is an understanding of Imago Dei. For the sake of the Nations and for the sake of the church, my prayer is that Imago Dei will continue to be mum and lived out, that all might know God and be reconciled to him.What is Imago Dei? Imago Dei is where humankind finds all of their worth. It is what drives our convictions and frees us to love, forgive, and value each other. Theologians explain that the image of God is often understood through the substantive view- that we are like God in having the same physical, mental and spiritual qualities and abilities that he has, the relational view- that we understand who God is and who we are through a relationship with Him and through our relationships with others, and the functional view- that we better understand what it means to be made in the image of God through our experiences and actions, in living our lives for Christ. What difference does it make to know who God is and who he says we are? All of the difference in the world- literally. work CitedElwell, Walter A. Evangelical Dictionary of Theology. Grand Rapids, Mich Baker Book House, 1984. Print. Grudem, Wayne A. Systematic Theology An Introduction to Biblical Doctrine. Leicester, England Inter-Varsity Press, 1994. Print. Erickson, Millard J, and L A. Hustad. Introducing Christian Doctrine. Grand Rapids, Mich Baker Academic, 2001. Print. Schaff, Philip. Bibliotheca Symbolica Ecclesiae Universalis The Creeds of Christendom.Grand Rapids Baker, 1966. Print.

Of Mice and Men - John Steinbeck Essay Example for Free

Of Mice and Men John Steinbeck EssayIn Chapter 4 of Of Mice and Men, John Steinbeck portrays Crooks, Lennie, Candy, and Curleys wife as outcasts who although ar lonely and look each others companionship, ostracize each other as yet. Each of said characters desire companionship, are outcasts, and as a result abase one another.Crooks, Candy, Curleys wife, and Lennie are lonely and therefore seek companionship. Crooks is a very lonely character, and may in item be the most diverse due to both his handicap and race. When he gets companion, he tries to conceal his pleasure with anger he does not obtain others into his abode because they discriminate against him (his impediment is therefore seen as a spiteful retaliation), but at the equivalent time he is delighted to remove company. When Crooks sees Lennie standing at the doorway smiling at him, Crooks gives in and allows him to stay, telling him you can come if ya want. Lennie is also lonely, for he is drawn to Crooks sta ble when he sees the light on when he approached Crooks, he smiled helplessly in an attempt to make friends. Candy later comes in to the stable, as Crooks allows him to come in he is modest about Crookss welcome, saying of course if you want me to.Candy is a passive man virtually unable to take any independent action and his one major(ip) act in the book, offering Lennie and George money in order to go in on a piece of land together, is a means by which he can become dependent on them this is a result of his impeding loneliness. Lastly, Curleys wife enters the stable. Her presence is almost nomadic she wonders around the whole ranch, pursuit company and then parting. Generally considered to be a tramp by the men at the ranch, Curleys married woman is the only major character in Of Mice and Men whom Steinbeck does not give a name.She dislikes her husband and smells desperately lonely at the ranch, for she is the only woman and feels isolated from the other men, who openly scorn he r. She still holds nearly small hope of a better life, claiming that she had the chance to become a movie star in Hollywood, but otherwise is a bitter and scornful woman who shamelessly uses sex to intimidate the workers. When she enters the stable, she pretends as if she is looking for Curley, but she really just wants company. Each of the aforementioned characters seek each others companionship and company to keep from getting lonely.Crooks, Candy, Curleys wife, and Lennie are also scrutinized as outcasts in the society in which they live, due to their defects Crooks be a black cripple, Candy an old handicapped man, Curleys wife being female, and Lennie whom is afflicted with mental retardation. Their recluse stature is justified in the names in which they call themselves Crooks calls himself black and a busted cover nigger. Candy is called a busted sheep, Lennie a dum dum, and Curleys wife a tart. Furthermore, Steinbeck does not give Curleys wife a name this illustrates that women in the concurrent era were looked down upon. Crooks, Curleys wife, Candy, and Lennie are further exemplified as outcasts by the fact that Slim, George, and Whit left them behind. Crooks, Candy, Curleys wife, and Lennie are exiled from society and left to be alone.With the pain, loneliness, and fear which they feel, Crooks, Candy, Curleys wife, and Lennie degrade each other. They call each other names, and Curleys wife adds to these statements by saying they George, Slim, and Whit left the weak ones behind. Candy calls her a skreak and reminds her that they at least have friends. Candy and Crooks even indicate that they want her to leave, that they have had enough.Crooks, Lennie, Candy, and Curleys wife are portrayed as outcasts who although are lonely and seek each others companionship, they ostracize each other nevertheless because of the over bearing society in which they live. They demean and mortify one another to make themselves feel better to attain a private victory that the other is more of an outcast than the former. They would rather have bitter company as to no company.

Anti Oppressive Practice in Social Work Essay

Anti Oppressive Pr causeice in Social utilisation EssayI supply for demonstrate the role of the practitioner on Reflective Anti-oppressive workout. l will reflect upon the effect that my experiences had on me . In relation to withstanding c ar housing will mention the underlying values of being a reflective practitioner.In the essay, I will explore and batch upon a range of Models and possiblenesss themes as shown Thompson -PCS model Tuckman theory (1983)Banks (2001) explore oppression, discrimination and anti-oppressive practices are based on society that creates divisions and how people divide themselves. Conducting a session about sex education set targets to quantify the young people is to treat people with respect and value each other, avoid negative discrimination(quote). Dalrymple et al, (1995) defines the anti-oppressive practice is about a process of change, ich leads service users from feeling powerless to powerful (Dalrymple andBurke, 1995). Empowerment links with anti-oppressive practice, in that the social worker can work with service users enables them to overcome barriers to solving problems.Braye et al (1997) expose the challenges confront in practice, it is about positively working to myths and stereotypes speak out and act against the way professional practices and the lawfulness itself discriminate against certain groups of people (Braye andPreston-Shoot, 1997).Case study roofless big(predicate) young person little person 18 years old sharing at her friends home. She is 3 week pregnant her young buck has left her and both arguing all the time. There are no support from home as her mother on benefits and living off her.The organisation is run by supported housing is called Vincent de capital of Minnesota society SVP, which is an international charity Christian voluntary organisation. SVP aim to tackle poverty and disadvantages provides accommodation and support for clients through clashing with supporting people between 16-25 ye ars old(svp.org.uk, 2012).The types of vulnerable group who are homeless are served females only Clients with learning disabilities and mental-health problems accommodated. SVP is a community based valued which is supported by the local anesthetic authorities (svp.org.uk, 2012 ). Value based within the local community, especially in relation to the framework of stage business in supported housing these light upon the service provided for young people. values of choice is to respects the rights from where they go through as well as promote young people rights to make their own decisions choices.The aim of forming is to identify the boundaries on both interpersonal and task behaviours (Tuckman,1965). I have applied Tuckmans theory in the study because this has helped to identify leadership within a group stage development. The stages are the following , Forming, Storming, Norming and Performing. Tuckmans (1965) approach as a linear model was applying to the group.The standards and norms of behaviour are establishing. Forming identified to work with group service users together. that not everyone does not want to engageFrom storming to norming stages, working with client P is recoded by doing key sessions periodic Client P have to make the choice to conform with, she is awareness breach her contract . postulation open and closed questions are the key to build a good rapport with the service user.The PCS normal identifies the levels of oppressionPersonalCulturalStructuralThe PCS ModelPersonalBeliefs, attitudes and behaviourHow people regard or treat othersCulturalAccepted values and codes of conductConsensusStructureStructural and institutions within society which act to perpetuate social divisions, prejudice and discriminationPersonal (P) levelIndividual actions that I come into contact with, for example service user.Cultural (C) LevelThis synopsis is related to the divided values or commonalties. For example, shared beliefs about what is right and wron g, good or bad, can form a consensus.Structural (S) LevelThis analysis demonstrates how oppression is sewn into the fabric of society through institutions that support both cultural norms and personal beliefs. somewhat institutions such as sections of the media, religion and the government can cement the beliefs.Case study homeless pregnant young personP Young person 18 years old sharing at her friends home. She is 3 week pregnant her boyfriend has left her and both arguing all the time. There is no support from home as her mother is on benefits and living off her. There is argument with her natural boyfriend for support.C being homeless within the community she is sharing her thoughts and feelings with different groups.S meshwork of divisions, social services, health, local authorityPractitioners will support with learning tools that transform to challenge oppression. Thompson, (2006) have identified the barriers in relating to honorable practice to identify form group- based ap proaches to anti-discriminatory practice to work together on issues of inequality, discrimination and oppression (Thompson, 2006). Challenging practice with young people engages them into ways at using wider insurance policy objectives ia person centred base. Service users will openly discuss and debate issues within a safe surroundings amongst their peers and focus on building ones confidence and reassurance within a group, as well as maintaining the learners concentration.These principles are about being worthy of attention regardless what they can do and who they are as follows esteem and promote young peoples rights to make their decision or choices, unless the offbeat of them as seriously threatened. Promote the welfare and safety while permitting them to learn through activities. Contributes towards the promotion of social justices for young people and encourages them to respect differences, vicissitude and challenging discrimination. Act with a profession integrity (Bank s, 2001)When assessing young people it is necessary to take into reflexion that there are no right or wrong answers. By using open questions, this allow service user to engage with the practitioner to expand on their opinions and experiences..ConclusionUsing the PCS model, I prize the signs within groups to work together and support each other on their strengths and weakness. Thompson, (1994) identified the barriers in relating to ethical practice to identify form group- based approaches to anti-discriminatory practice is to work together on issues of inequality, discrimination and oppression. Tuckmans theory in the workplace has helped to identify leadership within a group stage development. I identify the stages through tuckmans theory has helped to be non judegment al with clients as their strengths and weakness can be assesss to build up their esteem and confidence for them to rapport a good working relationship.

Differences Between Linear Block And Convolutional Codes Computer Science Essay

Differences Between Linear Block And Convolutional Codes Computer Science Essay in the main the coding theory is the detailed analysis of the properties of the cyphers and their suitable quality for the identified application. Codes atomic list 18 mainly employ in cryptography, illusion correction , info compression and now a days it is in both case apply for the network coding.this coding universally involves with the running(a) close up laws, commotional mandates, turbo codes respectively.LINEAR BLOCK CODESIn coding theory, the elongated baffle code mostly referred as a error correcting code for which the obtained resultant codeword is the running(a) cabal of whatever two code speech communication. In simple words, the analogue fend off code possesss the linearity property that is the total of any two codewords is to a fault a codeword. These linear engorge codes atomic number 18 divided in to the pile odes and convolutional codes, eventhough turbo code s is the confederacy of these two types. More efficient encoding and decodig algorithmic ruleic rules be provided by the linear codes when comp ard with the other codes.(http// en.wikipedia.org/wiki/linear codes).CONVOLUTIONAL CODESThe main principle involved in the convolutional code is the weighted sum of the various scuttlebutt inwardness symbols is the resultant codeword symbol. This resemblance the convolution dropd in the LTI systems where we find the output of a syatem by well-educated the zest response and the respective input. So hence the output of a convolutional en coder foundation be obtained by the convolution of the input bits with the states of the convolution encoder understands.(http//en.wikipedia.org/wiki/convolutional codes).TURBO CODESIn 1993, turbo codes be veritable which are the class of high doing forward error correction codes and they are overly the first realistic codes to come nearer to the chgannel faculty for the code step at which r eliable communication is still possible while a proper(postnominal) identified noise level is attached. Berrou glavieux and thitimajshima introduced these turbo codes in 1993 in their paper named near Shannon do error correcting and decryption turbo codes. Once after the introduction of these twin turbo codes many another(prenominal) other types are discovered which mainly includes double accumulate codes, successive versions. Even the conventional FEC systems are as well been applied by the repetitive turbo decipher methods.(http//en.wikipedia.org/wiki/turbo )2. CORE OF THE PAPER1. PRINCIPLES OF THE LINEAR BLOCK CODESA be quiet code of space n and codewors is verbalize to be a linear(n, k) code if and only if the k dimensional subspace of the vector space is formed by all the codewords of all the n- tuples over GF(2). A linear code of length n and rank K is the linear subspace C with dimension K of the vector space where is the finite field consisting of the q elemen ts. Such tytpe of a code with parameter q is called a q ary code. The code is said to be as binary code or ternary code if and only ifq =2 or q=3 respectively. Linear impede codes are shortly described by their symbol alphabets (example binary, ternary) and with parameters (n,m, ) wheren is the codeword length in symbols.m is the total number of kickoff symbols which are employ for encoding.is the codes minimum overplay distance.Linear block codes are of many types they arecyclical codesRepetition codesParity codesPolynomial codesReed Solomon codesAlgebraic geometric codesReed muller codesPerfect codes.A. author MATRIX AND PARITY CHECK MATRIXSince the linear codes could be considered as a linear subspace C of , so any codeword C arouse be represented as a linear combination of a set of basis vectors such that ,C= ++.= mGWhere G is the generator intercellular substance and m is the message.B. THEORITICAL CONCEPTSAs linear subspace of , the span of the minimal set of codewords can be represented by the blameless code word C. These obtained codewords are collected and combined in the rows of the matrix G kn take as generator matrix for the code C. Theoretically, it is the standard form of is given as G=(/A), where is the kk identity matrix and A is k(n-k) matrix.A check matrix is defined as the matrix which represents the linear perish H whose kernel is C. The generating matrix G in standard form, G=(/A), with C as a code then H=(/) is a check matrix for C.C .HAMMING CODESHamming codes are the first codes developed for the purpose of the error correction. These are widely used in digital communication systems. For any positive degree integer r=2, there exists a -r-1,3 hamming code.Example given the fol execrableing generator matrix and parity check matrix, the linear block code is 7,4,3 hamming code.G= ,D. HADAMARD CODEHadamard codes is capable of correcting many errors and is a , r, linear code. Hadamard code has minimum distance and therefore can cor rect -1 errors.Example The linear block code with the following generator matrix is a 8,3,42 Hadamard codeE..MERITSLinear codes are the very tumescent(p) calss of the error correcting codes. It generally includes the simple description, easy procedure for encoding, nice properties, conceptually easy decoding.If C is a linear code then the minimum distance d(c) is easy to compute.Linear codes possesss simple specifications.To specify the (n,k) linear code it is sufficient to list K lin betimes independent codewords where as for the non linear code words generally we have to represent with all the code words.The most important linear block codes areHamming codes, cyclic codes, reed Solomon codes, BCH codes, LDPC codes, turbo codes respectively.F. DEMERITSThe main drawback of the hamming code is that it has the fixed hamming distance and to a fault it is very difficult to implement coders for large block. The detection of two error bits and ability to correct the individual errored bit can be obtained from the fixed hamming distance.if we choose a code which generally allows the implementor to consider the desired hamming distance will be useful or beneficial. Hammer coder practical largest possible allows for codewords of nearly 31bits only.G. APPLICATIONS(1) These linear block properties are used in many applications. Trellis moldable is gene gaitd by using the syndrome coset uniqueness property of linear block codes. (2) these are also used in sensor networks for distributed sourcecoding. (3)by using these codes phase shift can be easy corrected and detected and also multiple signals can be easily sent from onechannel. (4) some other applications include runny border systems which are used in CDMA.( fictitious characters William E.ryan and shu lin(2009) channel codes classical and modern, Cambridge university press.,Thomas M. corer and joy A. Thomas(1991) elements of information theory john wiley and sons).2.PRINCIPLES OF CONVOLUTIONAL CODESConvolution al codes comes nether a category of error correction codes in which an n bit symbol consists of each m bit information symbol to be encoded where coderate is m/n (n=m) and the transformation acts as a function of the last K information symbols, here the bashfulness lenghht of the code is de noned by K.A. .Convolutional encoderTo encode data convolutinoally, we demoralise with K memory reegisters holding one input bit each. Until other measure specified , the 0 is the initial value af all memory registers. The encoder includes n-modulo 2 adders( it can be put effort with ace Boolean XOR gate ) and n generator polynomials- each adder has one of them. The left most register is feded with the an input bit m. By using those existing values in the remaining registers and the respective generatot polynomials the n bits are the encoder outputs. By bit shifting all register values to their correctly and have to search for its following input input bit. The encoder continues output unt il all registers have returned to the zero state if there are no remaining input bits. The at a lower place see shows the rate 1/3 of the encoder with k value ( constraint length) of 3. And also the generator polynomials are =(1,1,1), =(0,1,1) and =(1,0,1)The calculation of the output bits are as followsn1 = m1 + m0 + m-1n2 = m0 + m-1n3 = m1 + m-1.Img.1. Rate 1/3 non-recursive, non-systematic convolutional encoder with constraint length 3.B. RECURSIVE AND NON RECURSIVE CODESThe above figure shows the encoder where as the on a lower floor one shows the recursive one respectively,Rate 1/2 recursive, systematic convolutional encoder with constraint length 4.It can be easily observed that the input which is encoded is included in the output sequence also. These codes are generally called as systematic. The some other type of codes are generally called as non systematic codes. Generally the systematic codes are always recursive codes where as the non systematic codes are always non re cursive codes. The name convolutional encoder came for it because it carry out a convolution of the input stream with the encoders impulse responses.=Where x is an input sequence, is an output sequence from output j and which is the impulse response of the output j.The discrete lineaqr time invariant system is also called as a convolutional encoder. The own transfer function itself describes the output of an encoder. The transfer function is connected by the impulse response with z transform.+(Z)= +,(Z)=1+.The second order transfer functions are(z)=We Define m byWhere for any rational functional, we define it asWhere m is the uttermost polynomial degrees of the . And the constraint length is defined as .C.TRELLIS DIAGRAMA convolutional encoder is also referred as finite state machine. An encoder with n binary cells produce states. beneficial imagine the encoder which is shown in figure 1 has 1 in left memory cell(m0) in right one. We will refer such a stete as 10. By considering input bit the encoder at the next turn can convert either to 11 state or 01 state or 01 state. from the below figure we get rhe idea of decoding if the received sequence doesnot suit this graph then it errors can be obtained and we should select closest correct sequence. All transitions which are possible are shown as belowThe red line is the path of the trellis. The lines their indicate transitions where the dotted lines are 1 input and the proper lines rae 0 input. The path here represents an actual encoded sequence. One of the path is shown in red colour as an example. The figure provides an idea about the decoding.D.FREE DISTANCE AND THE ERROR DISTANCEThe minimum distance between the different encoded sequences is called as the liberal distance. The number of errors that can be corrected by code is given as correcting capability. It is given as correcting capability. It is given as,F. DECODING CONVOLUTIONAL CODESDecoding the convolutional codes can be done by several algorithms . thye vviterbi algorithm is universally used for relatively small values of K as it is highly parallelizable and it also provides maximum likelihood performance. By using SIMD instruction set the viterbi decoders are easy to implement the software on cpu and also in VLSI big(a)ware.Fano algorithm is the best one among the several sequential decoding algorithms by which the longer constraint lenght codes re more practically decoded. Unlike viterbi decoding sequential decoding is not have maximum probability but there will be the slight incresase in the complexity with their constraint lengfht. Giving the chance to us the long , short constraint Length codes. In early 1970s these codes are used in the pionner program in Jupiter and Saturn but do it shorter, these viterbi decoded codes, often connecyed with large reed Solomon error correction codes which generally steeps the complete bit error rate curve and it also produces the very low residual undetected error rates. These bo th sequential and viterbi decoding algorithm gives the hard decisions..The codeword which is most likely formed by the bits.by using the soft output viterbi algorithm an appropriate authorisation measure can be added to each bit in use with the BCJR algorithm the maximum a posterior(MAP)Soft decisions can be obtained.G. POPULAR CONVOLUTIONAL CODESThe viterbi decoded convolutional codes is used for the voyagev program which has a constraint length of K=7, and also rate=1/2. The more powerful codes are produced by the longer constraint lengths but the viterbi algorithm complexity increases exponentially with respect to the constraint lengths , controlling these more powerful codes to bass space machines where the extra performance increases decoder complexity. Cassine probe, mar path finder, mars exploration rover to Saturn use of K=15 AND RATE OF 1/6, 2DB Bbetter than the simplex k=7, code at a rate of 256* in decoding complexity iss performed by this code.H. MERITSTo correct the e rrors in noisy channels these convolutional codes are a great deal used.These convolutional codes perform well on very bad conditions also.These convolutional codes are generally used often in air communications, mobile telephony and also in voice band modems.Convolutional codes generally gives good results in lower noise environments.Convolutional codes are also used in the voice band modems( v.,32, v.17, v.34) and also in the GSM mobile phones.I. DEMERITSEven though the convolutional encoder has the simplest procedure, decoding of it is very complex task.Convolutional codes cannot provide more protection against noise.J. APPLICATIONSConvolutional codes are used in the number of the applications which aims to achieve reliable data transfer, including radio, mobile communications, digital video communications, satellite communications.By using hard decision code, these codes are implemented in chemical chain( example reed Solomon).These are more efficient.(references tutorial on convolutional coding and decoding, the online text book IT, inference and leaving algorithms by david J.C.Mackay).3. PRINCIPLES OF TURBO CODESBy using the block code with convolutional code and also withthe longer constraint length and large block length it is theortically possible to procession the Shannon limit. But this approach became impractical due to the processing power needed to decode. By using the recursive coders and iterative soft decoders the turbo codes overcome this drawback. The main aim of the recursive coder is to make the convolutional codes with shorter constraint lengths which appears as a large constraint length of a block codes and iterative soft decoder efficiently improves the estimation of the obtained message. The below shown figure generally gives the encoder for slaying which describes a clasiical encoder which provides the general design of the turbo codes. The 3 bits of the subblock can be sended by using this encoder implementation. The m-bit block of payload data is in the first subblock. The n/2 parity bits for a well known permutation includes in the tertiary subblock which is once again computed with the RSC code. The total number of bits in the code are . Interleaver is a device which generally carry outb the permutation of the payload data. This turbo code encoder includes two RSC codes (identical) , , as shown in the figure. By using the concatenation scheme these are connected to each othere which is reffered as parallel concatenation. here(predicate) M acts as a memory register. The input bits are forced to appear in different sequences by the dealy line and interleaver. The input sequence appears at both outputs after completion of first iteration , , because of the encoders systematic nature.==DECODERThe serial connection of two elementary decoders is said to be a decoder. Generally decoder only operates on the lower speed( ) , thus it is planned for the encoder and is for encoder. The produces delays and also ho ld a soft decision. Where as produces delay respectively. The error bursts which are coming from the output are scattered by the interleaver whicvh is installed between between the two decoders. Here DI refers to demultiplexing and insertion module here it acts as a switch, it generally redirects input bits to once and to at another. It feeds both , inputs with padding bits( zeroes) in off state. While considering a memory less AWGN channel and assumption is made that at the iteration, the decoder receives a pair of random variables.=(-1)+,=2(-1)+ .Here is a bit from output of encoder and , are independent noise components consists of same produces a soft decision ie) = and pass it to the . generally referred as logarithm of likelihood ratio. The posterior probability (APP) of bit data is defined as which shows the probability of explaining a received bit as i. But where as produces a hard decision which is a decoded bit. Viterbi algorithm is unappropiate to calculate APP, it is not used in a BCJR algorithm is used but where as for viterbi algorithm is an appropriate one.MERITSUp to now, we know so many practical error correction methods but turbo codes and low density parity check codes come very close to approach the Shannon limit , which is the theoretical limit of maximum transfer reate of information over a noisy channel.Turbo codes increases data rate with out increase the transmitted power, or to transmit at a certain data rate they are used to decrease the amount of the power.It generally produces the best performance results pof the throughput and rotational latency.DEMERITSIts main disadavantage is the complexity of the relative high decoding.It also has relatively high latency, which is not suitable for some applications.It is also not verymuch useful for the satellites why because the latency is produced by the transmission distance due to the limited speed of the light.These algorithms are complex in nature.APPLICATIONS3G and 4G mobile telephony standards uses turbo codes widely. Examples HSPA and LTE .Used in media FLO and QUALCOMMTurbo codes are also useful in NASA missions such as mars re connaissance orbiter which is another option to RS- viterbi codes.IEEE802.16 generally uses the block turbo coding and CTC(WIMAX) a wireless metropolitan standard.Turbo codes are used in the designs of the digital communication systems and also in detection, demodulation.Turbo codes in the field of the error correcting codes represents a meaningful development.The cable transmission, short distance communications or data storage are the prospective applications of the turbo codes.(references Berrou, claude glavieux, alian , punva, near Shannon limit error- correcting, Berrou, claude, the ten years old turbo codes are entering in to the service, france).4. circumstantial COMPARISIONLINEAR BLOCK CODES AND CONVOLUTIONAL CODESConvolutional codes have a regular, natural, trellis structure which are useful in the implementation of the vite rbi algorithm. Where as the linear block codes have a natural but it has minimal trellis structure.In both convolutional codes and linear block codes, the estimation of viterbi algorithm can be done by number of trellis edge symbol per encoded bit.Generally convolutional codes does not provide more protection against noise than the linear block codes.Convolutional codes offers greater simplicity of implementation over a linear block codes in many cases.Convolutional codes may not have minimal trellis representation but where as the linear block codes has the minimal trellis structure.The main differences between the linear block codes and convolutional codes is that a system which is using the block codes will transmits the k data bits and then transmits the n-k reductant bits. Where as the system which uses the convolutionla codes produces n coded bits from k data bits and the codeword need not contain unaltered k data bits.The main difference between the convolutional encoder and the block encoder is that the block code related not only to the current , but also on the anterior (u) number of fixed information blocks ,, That is given as,=++..With out the memory a linear block code is merely a convolutional code.The theory of the linear block codes seems to be degenerate of the theory of the convolutional codes, the usual approach of the convolutional codes is to note the small and fixed values of n and k and also the varying values of .TURBO CODES V/S CONVOLUTIONAL CODESThere are some differences between the behaviour of turbo codes and the convolutional codes. As we know that the performance of the convolutional codes imcreases with the change magnitude constraint length( code complexity). This is not for the turbo codes where the best codes of the turbo codes have the small constraint lengths .With decreasing code rate the performance of the convolutional codes doesnot improve significantly. Where as for the turbo codes even for the lower coding rates it achieves a very significant coding gain.While seeing from the implementation point of view, soft output encoders and recursive decoders are ingrained in turbo code schemes, where as they are not that much essential in convolutional codes excluding the concatenated configuration.CriteriaConvolutional codesturbo codesLarger constraint lengthgoodbadLower coding rateindifferentgoodLarger free distancegoodindifferentSoft output decodersindifferntgoodRecursive encodersIndifferentgood twain the linear block codes and convolutional codes are most frequently used type codes in the practice of enginnering for the plan of the most useful codes.TURBO VS LINEAR BLOCK CODESThe turbo codes are the hybrid model of the both the linear block codes and the convolutional codes respectively.The linear block codes used in the turbo codes instead of the convolutional codes to form a turbo product code(TPC). Two hamming codes are concatenated serially with the absence of an interleaver in between them. T hey can perfoem well in low SNR and can be formed by any block code.The convolutional codes used in the turbo codes usually forms a parallel concatenated convolutional code(PCCC) which have the small constraint length. They are systematic.5. SIMULATION RESULTSThe guise results of linear block codes are as follows The dual adaptive importance sampling (DAIS) proficiency evaluates the word and bit error rates of linear block codes down to extreme low values.(reference Slin and D. Costello, error correction coding fundamentals and applications).T,he simulation of the convolutional codes are as followsSimulations with two recursive , equal convolutional codes with an interleaver whose length is 400 and k=50, this generally provides manufacturer interoperability, because this technique achieves the improvements which is over 3.5 dB respectively over the trellis codification modulation.(referenceConcatened trellis/reed Solomon coding in DMT systems- Kschischarg).The simulation results o f the turbo codes are as followsAt a rate of R=1/2 the simulation results of the turbo codes are obtained. Here length of the data block is 400 bits( assumption) and also a MAP decoder used in the simulation. From the results it is observed that for the first few iterations yield the most significant improvements in BER for any given value of .After that the results appear to converge on to a BER for each value of .( reference Andersen JD and zyablov vv, interleaver design for turbo coding).6. CONCLUSIONSo, hence in this research paper we have discussed the principles, applications, merits and demerits of the linear block codes, convolutional codes, turbo codes respectively. We also discussed the main differences between the block codes, convolutional codes, turbo codes and presented their respective simulation results. Personally, by doing this research i learned a lot on this coding theory and also came to know the importance of these codes in the present world. The future applica tions of these codes are to provide the substantial improvements in communication for the satellites.7. REFERNCES(1) code tables bounds on the parameters of various types of the codes.(2) q- ary code generator program.(3) error correcting codes (ECC) page(4) Wikipedia articles in corporating text from the federal standarad convolutional codes with a 1037c.(5) turbo decoding as an cause of pearls belief propogation algorithm,.(6) IEEE journal on selected areas in communication- Robert J Mackay, David J.C.(7) Turbo equalisation principles and new results an IEEE paper on communications.

RBG Colour Model Experiment

RBG Colour framework ExperimentIntroduction illusion is a visual attribute of objects that results from the light they emit, transmit or reflect. 1 These pretension moot us the ability to appreciate things around us. With this, we can easily define or give meaning to the things we see well-nigh every day. We can see these raft of colours in paintings, surroundings, the food we eat, and almost everything, as almost everything has food color. Electronic systems phthisis several(predicate) color models to represent data visually. 2 One of these color models is RGB color model. A color in RGB color model is expressed by how much of severally red, green, blue is included 2, hence the acronym RGB. In this experiment, we lit the RGB LED with different colors in Arduino, with the use of RGB color model.Materials with DescriptionDFRduino Uno R3 (1)The arduino circuit board.Jumper Cables M/M (4)Serves as the connector to different pins in the circuit.RGB LED (1)A diode that emits lig ht and to be used as an output in the circuit. It declare oneselfs different colors of light by setting its RGB (Red, Green, Blue) take account. It consists of 3 anodes, oneness for distributively color in RGB, and one cathode.220 Resistor (3)An electric device that leave behind control the flow of current through the circuit.Procedure (self-explained) attribute the components to the breadboard base on the tables below.ResistorBreadboardStartEndAD9G9BD7G7CD6G6Table 1 Resistor PositionsRGB LEDRedCathode(-)GreenBlueBreadboardI9I8I7I6Table 2 RGB Led PositionJumper fit outsBreadboardArduinoStartEnd1C6DP 102C7DP 113C9DP 94H8GNDTable 3 Jumper Wire PositionsAfter plotting the components to the breadboard. Connect the USB cable to the computer and the circuit.Compile and upload the code.Circuit Diagram markCode Analysis int redPin, greenPin, bluePin this code sets the pin numbers of each color from RGB LED to their respective pin time slot in the Arduino.void setup() a one-time initi alization method. Set all redPin, greenPin, and bluePin as output by using pinMode(pin, pinType) implicit in(p) function.void loop() a method that constantly iterates the statements inside the block. In this experiment, we hitd different colors, by generating ergodic numbers from random(min, max) each color from red, green and blue.random(0, 255) a built-in function that generates random number from look-a interchangeable 0 to 255.void colorRGB(int r, int g, int b) a user-defined method that accepts values of r, g, and b. This method is also responsible for assigning the values/colors for the pins of the RGB LED by using analogWrite(pin, value). When these colors are combined together, the RGB LED will create a different color based on the values of the RGB written by analogWrite().constrain(value, min, max) a built-in function that checks whether value is in the range of min and max. If so, return the value. If value is greater than max, this function will return max. If value is less than min, this function will return min. This code is essential to check whether the value is less than 0 or greater than 255, as analogWrite can only accept values 0-255. Also, the color values for each color in RGB can only be 0 255. For example R = 255, G = 0, B = 255, this will create a violet color.delay(n) lets the circuit sleep or delay for n milliseconds.Comparison of Code vs. Hardware OutputIt is noticeable that the code controls and manages how will the hardware provide an output. It is also important that the pins used in the hardware should be the same in the code. This experiment introduced a new kind of LED that can represent or display different colors. The RGB LED changes its color by using random number generation as part of the code, and setting those values to each color in RGB pins in the LED.Recommendation/EnhancementThe experiment can be integrated in disco bars, to produce different colors of lights. This can be also used for medical purposes for pe ople who may suffer color blindness. For example, an RGB LED, will produce colors, and the individual will describe the color he or she saw. A billboard composed of multiple RGB LEDs can be used to act like as pixels in a graphic image.1WordNet Search 3.1, Online. Available http//wordnetweb.princeton.edu/perl/webwn?s=colorsub=Search+WordNeto2=o0=1o8=1o1=1o7=o5=o9=o6=o3=o4=h=.2RGB Color Model Wikipedia, Online. Available https//en.wikipedia.org/wiki/RGB_color_model. Accessed 9 January 2017.