Cosine Transform∗ Gilbert Strang† Abstract. Each discrete cosine transform (DCT) uses N real basis vectors whose components are π cosines. In the DCT-4‚ for example‚ the jth component of vk is cos(j + 1 )(k + 1 ) N . These 2 2 basis vectors are orthogonal and the transform is extremely useful in image processing. If the vector x gives the intensities along a row of pixels‚ its cosine series ck vk has the coefficients ck = (x‚ vk )/N . They are quickly computed from a Fast Fourier Transform. But a
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In society today there are different meanings to culture in the English language culture is the most difficult word it means buildings and civilization. In French the culture relates to art and in German it refers to a high culture ‚ A very simple meaning of culture is sharing ways of behavior ‚ thinking and beliefs it is not inherited it’s something you learn from your family‚ friends and workplace . A person’s nature cannot be assumed as culture‚ cultures are integrated it is mainly based on
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Arab Spring? Social Movement? Change in society is not always bad‚ a time of transition from one phase towards another is something that might bring a better condition for the future. Even if the transition period are filled with violence‚ the end result of the transformation can be either in the shape of new government or even a society change. The beginning of those transitions and transformation are triggered by an action call social movement. In this paper‚ the writer will attempt to describe
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pocket or purse. You can call anyone from almost anywhere. Another advantage is that people can get a hold of you fast in case of an emergency situation. On September 11‚ 2001‚ two major airliners crashed into the World Trade Center in New York City. The passengers on the airplanes had called their loved-ones on their cell phone to hear there voice for the last time. Not only that‚ but when a car break down a cell phone dose come in handy‚ especially in Canadian winter. The benefit of have a Cell
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During the 1950’s and 1960’s in America‚ there was racial discrimination and segregation‚ which was legalised through the Jim Crow laws. The Civil Rights movement aim was to challenge these laws and achieve legislative change‚ making the ”X” challenging the racist laws and enforcing equal ones. The movement was a ”Sustained upsurge” due to the constant protest and large scale buy in from the African American community‚ which lead to numerous groups forming because of it which sustained the CRM..
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Civil Rights movement of the 1960’s based their agenda primarily on the goals of equality for African-Americans. The call for better treatment of African-Americans rallied society together in the fight for increasing tolerance and further awareness of the injustices occurring in the seemingly tolerant United States. However‚ despite fruitful and positive intentions‚ the movement was unable to accomplish the idealistic goals they preached. Though the Civil Rights movement of the 1960’s was able to
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slišAdnan Puzic Professor: Elma Porobic English 1A 26/12/2014 What is happening with today’s youth?! The main reason I have chosen this theme is recent headline in the newspaper: “Seven young girls got pregnant on their road trip”. When you see a headline like this you start wondering what is happening with today’s youth. What is the reason for behaviour like this?! Wrong parenting‚ influence of the internet‚ influence of parents or influence of older friends? Why is today’s youth behaving older
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In addition to changing Canadian mentality ‚ Hippies have created an era of pop culture and lifestyle that has been carried into present times . During the early 60’s ‚ many Hippies migrated to rural areas of Canada and lived off the land as a way to get in touch with nature . For those who could not afford to live in remote locations ‚ communal living was the next best option as many Hippies were homeless and could only live comfortably by sharing with others . Communal living was the most preferred
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Obesity In Our World Today Obesity in our world today is getting out of control especially in the United States and people don’t know what to do to fix it. It’s not only in the United States though‚ but it is also in the entire world. It’s surrounding us in everything we do‚ and especially everything we eat. From the Double Quarter Pounder at McDonald’s‚ to the Whopper at Burger King‚ obesity is looming around every corner. So what can be done about obesity in our world today you might ask? There
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Consider to what extent was the world already at war in 1939? Before the war in 1939‚ there were clearly bitter and tense international relations. We also find that many powerful countries were reluctant and unable to prevent Hitler in his policies of Lebensraum and expanding Germany’s territory in Europe. Hence‚ we can extrapolate that the world was already at war to a large extent in 1939‚ whereby the invasion of Poland was merely a catalyst and consummation of the tense international relations
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