منابع مشابه
What Will Happen to Brazilian Fertility?
Despite the absence of an official family planning policy, demographic changes in Brazil occurred at an unprecedented pace in the second half of the twentieth century, ushering in an era with total fertility rates near the replacement level. According to the population censuses, the total population in Brazil was 52 million in 1950 and 170 million in 2000. This reflected a mean annual growth ra...
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This paper offers some rules of thumb that practicing social workers can use for case studies that aim to construct, albeit not fully and never entirely reliably, models designed to help predict what will happen if they intervene in specific ways to help this particular client, here and now. We call these 'ex ante case-specific causal models'. 'Ex ante' because they are for before-the-fact pred...
متن کاملIt Will Happen to You
Everyone experiences bereavement but few give prior thought to it. Knowing something about the possible reactions and repercussions of bereavement is the best preparation for it.
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The checkers program Chinook has earned the right to challenge for the World Checkers Championship. The experiences gained in developing the program and preparing for the match illustrate several important obstacles to successfully mounting a challenge to the human World Champion. These points appear to be directly applicable to chess, and the checkers experience may well be a preview of what i...
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ژورنال
عنوان ژورنال: Nature
سال: 1969
ISSN: 0028-0836,1476-4687
DOI: 10.1038/222102a0