Who developed the District Information System (DICE) for education?

Read the following passage carefully and give the answer of following questions.

Art both reflects and interprets the notion that produced it. Portraiture was the dominant theme of British painting up to the end of the eighteenth century because of a persistent demand for it. It would be unfair to say that human vanity and pride of possessions were the only reasons for this persistent demand, but certainly these motives played their part in shaping the course of British painting. Generally speaking, it is the artist's enthusiasm that accounts for the vitality of the picture, but it is the client who dictates its subject-matter. The history of national enthusiasms can be pretty accurately estimated by examining the subject-matter of a nation's art.
 There is one type of subject which recurs again and again in British painting of the late eighteenth century and the jart half of the nineteenth and which is hardly met with in the jart of any other country ---- the sporting picture, or rather the picture in which a love of outdoor life is directed into the channel of sport. The sporting picture is really an extension of the conversation piece. In it the emphasis is even more firmly based on the descriptive side of painting. It made severe demands on the artist and it must be-confessed that painters capable of satisfying these demands were rare. The ability to paint a reasonably convincing landscape is not often combined with the necessary knowledge of horses and dogs in movement and the power to introduce a portrait when necessary. To weld such diverse elements into a satisfactory aesthetic unity requires exceptional ability. It is not surprising, therefore, that while sporting pictures abound in England, especially in the private collections of country squires, not many of them are of real importance as works of art. What makes the sporting picture worth noting in, a history of British painting is the fact that it is as truly indigenous and as truly popular a form of art in England as was the religious ikon in Russia.

The vitality of the picture depends on

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By interchanging the given two signs and numbers which of the following equation will be correct?
 + and –, 7 and 6

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There are two types of main memory.