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排序方式: 共有89条查询结果,搜索用时 536 毫秒
81.
This paper examines the relationship between specialization and happiness in marriage in the U.S. and Japan. Our findings, based on the General Social Surveys in the U.S. and Japan, indicate both similarities and differences in the determinants of marital happiness in the two countries. In the U.S., the findings are mixed. Women’s reported marital happiness in the U.S. is more likely to follow the predictions of the bargaining model where their happiness is determined by their own income. Men’s marital happiness in the U.S. follows the predictions of the specialization model; they are happier if their wives are not working or, alternatively, if they are financially dependent on their wives. In Japan, we find support for the specialization model, particularly in the case of women; they are happier if they are specialized in the household and they have a higher household income. Our research highlights how marital quality is affected by the institutional context and the normative environment.  相似文献   
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A detailed analysis of survey data collected in 1961–1962 for a sample of 4200 families in central East Pakistan produced consistent and reasonable estimates of birth and death rates for the preceding decade. Extremely high levels of infant and child mortality declined noticeably in the period 1952–1961. Age-specific birth rates to married women also decreased in the decade for women over the age of 19, while a small increase was recorded for married women aged 15 to 19. During the 1950s total marital fertility declined about one-fifth. Birth rates remained high in 1960 according to these estimates, but there is reason to anticipate further reductions in birth rates, particularly among older women. To improve understanding of the determinants of fertility and to aid in the formulation of policy to cope with population trends, statistical analysis must increasingly consider information on families over time. Retrospective household survey data may provide the empirical base for this line of inquiry.  相似文献   
86.
We analyze the impact of an experimental maternal and child health and family planning program that was established in Matlab, Bangladesh, in 1977. Village data from 1974, 1982, and 1996 suggest that program villages experienced a decline in fertility of about 17 %. Household data from 1996 confirm that this decline in “surviving fertility” persisted for nearly two decades. Women in program villages also experienced other benefits: increased birth spacing, lower child mortality, improved health status, and greater use of preventive health inputs. Some benefits also diffused beyond the boundaries of the program villages into neighboring comparison villages. These effects are robust to the inclusion of individual, household, and community characteristics. We conclude that the benefits of this reproductive and child health program in rural Bangladesh have many dimensions extending well beyond fertility reduction, which do not appear to dissipate rapidly after two decades.  相似文献   
87.
Natural disasters and local demographic change in the United States   总被引:1,自引:0,他引:1  
Classic studies on local demographic consequences of natural disasters in the United States are now more than 30 years old, raising questions about how and to what extent relevant patterns have changed over intervening years, as the number and cost of recorded environmental hazards have increased. This study examines these questions at the county level for the nation as a whole, using recent census and hazards data in conjunction with statistical methods that account for spatial dependencies among neighboring counties. Results indicate a positive correlation between cumulative disaster impact during the 1990s and changes in local population and housing units; they also reveal patterns of increased socioeconomic polarization among local residents. These findings differ from earlier studies and put recent case studies in broader context, suggesting that current disaster recoveries contribute to the growth of larger and more unequal populations in environmentally hazardous places.  相似文献   
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Although stimulant therapy is the most common treatment for attention-deficit/hyperactivity disorder (ADHD) in children, it is not always effective in reducing behavioral symptoms. As a result, research on psychosocial interventions has progressed in recent years. This article provides a synopsis of psychosocial interventions for childhood ADHD, with an emphasis on basic behavior management principles, evidence-based interventions, and safety issues. Developmental issues that distinguish psychosocial interventions for children and adolescents are highlighted, and practical recommendations for collaborating with mental health professionals are provided.  相似文献   
89.
Long-term purchase contracts for natural resources, such as natural gas, often contain take-or-pay provisions that penalize the buyer for not purchasing (taking) a minimum quantity of output over some period of time. In some contracts for a limited time interval, known as the make-up period, the penalty payments can be credited against future “takes” in excess of the take-or-pay level. Additionally, options to “buy down” or “buy out” existing contracts, or to initiate new contracts, may exist. The purchaser, faced with projected requirements over some planning horizon, must determine purchase levels from a selected set of take-or-pay contracts so as to minimize purchase, inventory holding, penalty costs, contract initiation, and buy-out or buy-down costs. This paper presents a mixed-integer programming model of take-or-pay decisions with and without make-up provisions.  相似文献   
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