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Summary In Matlab Bazaar Thana the Cholera Research Laboratory has registered the births, deaths and migrations in a population of approximately 125,000 since 1966. Although this rural area was not the scene of any significant armed encounters, striking changes in birth and death rates were registered during and after the conflict. Birth rates did not change during the relatively brief period of the civil war, but a small decline was registered for one year after the war. Fertility rates which had been declining slightly and irregularly in the pre-war baseline period may have increased slightly during the war and fell substantially in all age groups in the year following the war. The crude death rate, which rose by 37 per cent during the war, was a very sensitive reflection of the administrative and economic problems. Overall infant mortality rose by only 15 per cent over pre-war levels because all of the increase was observed in the post-neo-natal component, which traditionally accounts for less than one-third of the total infant mortality in Bangladesh. Children and older adults accounted for the majority of excess deaths which were largely attributed to acute diarrhoeas and other gastro-intestinal causes. The death rate at ages 1-4 rose by 43 per cent and at ages 5-9 soared to 208 per cent above pre-war baseline rates. All increases in age-specific mortality rates fell to baseline levels during the year following the war, except the 5-9-year age group, in which rates continued to be high largely because of deaths due to dysentery.  相似文献   
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Jose D. Drilon, Jr., president of Food Terminal, Inc., and a former undersecretary of the then Department of Agriculture and Natural Resources in the Philippines, attributes the widening gap between food supply and demand in developing countries to the high rate of population growth and to the inability of poor countries to produce more food. This situation, in which many countries are facing hunger, was predicted by Thomas Robert Malthus as early as the 16th century. The primary concern of Malthus was the problem of making the food supply keep pace with a constantly growing population. The question arises as to how reliable is Malthusian theory. According to Drilon, Malthus was correct in predicting that population would expand at a rate not previously imagined but that the other aspects of Malthusian theory might not hold true due to the intervention of human beings. For example, it is hoped that the imbalance between population growth and food production can be minimized in the future. In the Philippines there is good reason to be concerned about the validity of Malthusian theory. Although the country's growth rate has been reduced from 3.01% in 1970 to 2.6%, it is still quite high. However, the Philippines has actually been producing sufficient food to feed its population. To make the Philippines self-sufficient in rice, the government initiated the Masagana 99 program in May 1973. Technical and material resources from the public and private sectors were provided to aid rice producers. A nationwide information campaign was also launched to familiarize the farmers with the new methods of rice culture. Masagana 99 has been costly but effective. Since the launching of the program, rice production in the Philippines has been increasing at 7% a year. The government is now using the Masagana 99 formula to increase the production of other crops.  相似文献   
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Relationships are examined between feelings of political competenceand cumulative media usage in five Western nations. Wide differentiationamong the nations studied is found, suggesting that multivariateanalysis is needed to establish whether media usage makes aunique contribution to feelings of political competence, oracts as a surrogate for other background variables.  相似文献   
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