首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5673篇
  免费   83篇
管理学   774篇
民族学   17篇
人才学   6篇
人口学   540篇
丛书文集   17篇
理论方法论   493篇
综合类   68篇
社会学   2598篇
统计学   1243篇
  2023年   33篇
  2021年   37篇
  2020年   77篇
  2019年   115篇
  2018年   129篇
  2017年   192篇
  2016年   118篇
  2015年   82篇
  2014年   106篇
  2013年   951篇
  2012年   211篇
  2011年   150篇
  2010年   114篇
  2009年   107篇
  2008年   123篇
  2007年   137篇
  2006年   122篇
  2005年   126篇
  2004年   127篇
  2003年   85篇
  2002年   118篇
  2001年   138篇
  2000年   105篇
  1999年   130篇
  1998年   105篇
  1997年   106篇
  1996年   78篇
  1995年   79篇
  1994年   93篇
  1993年   81篇
  1992年   92篇
  1991年   77篇
  1990年   87篇
  1989年   80篇
  1988年   91篇
  1987年   84篇
  1986年   77篇
  1985年   84篇
  1984年   69篇
  1983年   73篇
  1982年   65篇
  1981年   62篇
  1980年   55篇
  1979年   74篇
  1978年   60篇
  1977年   50篇
  1976年   59篇
  1975年   59篇
  1974年   34篇
  1973年   38篇
排序方式: 共有5756条查询结果,搜索用时 15 毫秒
31.
Research reports the uncertain outcome of variables affecting the life of a child of an MI parent. Nurses must avoid stereotyping children before assessment; they are to be in the forefront in assessing self-care skills and deficits to guide planning individual interventions for children and MI parents. Long-term research theory-based interventions will enhance mental health in high-risk children and families.  相似文献   
32.
Are children as young as 2 years old able to interact in groups of three? The study applied the family triad model first introduced by Parke, Power, and Gottman (1979 ) to the case of peer interaction. In Experiment 1 , the model was refined for use in studies of peer interaction and applied to an existing dataset of 16 triads of newly acquainted 24‐month‐olds. In Experiment 2 , the triadic coding system was further refined and applied to 12 single‐sex triads of newly acquainted 2‐year‐olds. The findings demonstrated that 2‐year‐olds are capable of triadic interaction although the predominant interaction pattern in triads is still dyadic. Contrary to past reports, triadic interaction was more likely to occur when the children were not in conflict. Both girls and boys were capable of triadic interaction.  相似文献   
33.
Developmental changes in children's relationships with their mothers and older siblings between 33 and 69 months of age were investigated in a longitudinal study of 47 families, through an examination of family conversations and affect expressed during unstructured home observations. Mother-child interaction decreased and sibling interaction increased markedly over the period. The prominence of reflective commentary in children's discourse increased while self-interested moves decreased with both partners; however differences in emotional expression and in patterns of change in the two relationships were marked, with more positive and negative emotion and play with siblings. Individual differences in the trajectory of these changes were correlated with early differences in social understanding, and with SES. The association between children's developing social understanding and these changes in relationships is discussed.  相似文献   
34.
The limitations and errors in data sources, primarily censuses and vital statistics, concerning mortality in Chile from 1865 to 1940 are examined. Solutions are offered to adjust the sources' underestimations, particularly with regard to infant mortality.  相似文献   
35.
This paper studies two models of rational behavior under uncertainty whose predictions are invariant under ordinal transformations of utility. The quantile utility model assumes that the agent maximizes some quantile of the distribution of utility. The utility mass model assumes maximization of the probability of obtaining an outcome whose utility is higher than some fixed critical value. Both models satisfy weak stochastic dominance. Lexicographic refinements satisfy strong dominance.The study of these utility models suggests a significant generalization of traditional ideas of riskiness and risk preference. We define one action to be riskier than another if the utility distribution of the latter crosses that of the former from below. The single crossing property is equivalent to a minmax spread of a random variable. With relative risk defined by the single crossing criterion, the risk preference of a quantile utility maximizer increases with the utility distribution quantile that he maximizes. The risk preference of a utility mass maximizer increases with his critical utility value.  相似文献   
36.
The age structure of a population is one basic factor of population research. It is not only affected by birth, death, immigration, and marriage, but it also reflected in changes of family size. The article analyzed it from two aspects: (1) the age structure of population acts on the size and structure of the family. The younger the age structure, the larger the family size. Otherwise, it is the opposite. According to the 1982 census, 35.4% of the population was 0-14 years in rural areas, and average family size was 4.6; but in urban areas 26.0% of the population was 0-14 years and family size was 3.9. The family was characterized as a nuclear family as industrialization in economic development increased and the population aged. In the 1982 census, 64.7% were nuclear family and 6% were aging population in China. Three- generation families (or more) have decreased dramatically. The change of family size and structure is affected by change of internal family age structure. The younger population (0-14 years) is dependent and 90% live with their parents. The adult population (15-59) years are more affected by marriage, birth and social economic action. Families are established in this age period and give much more effect to fertility. The aging population (over 60) years is facing changes. They appear to be a "Defect" family because the wife or husband has passed away. They change from independent to dependent. 78.3% population over 60 years were dependent on children or social welfare, only 21.7% were independent according to the survey in Beijing Changping County.  相似文献   
37.
A questionnaire was designed to test selected aspects of the author's General Theory of Addictions (Jacobs, 1982). Data were collected from groups of compulsive gamblers, alcoholics, and compulsive overeaters, and compared with the responses to the same questionnaire obtained from normative samples of adolescents and adults. The more inclusive term, compulsive gambler, has been used throughout, since the sample of gamblers in this study included an inpatient subgroup who had been diagnosed as pathological gamblers, as well as a subgroup of Gamblers Anonymous members who had not been clinically evaluated. Findings support the author's theoretical position that, when indulging, different kinds of addicts will tend to share a common set of dissociativelike experiences that differentiate them from nonaddicts. This has been termed a state of altered identity.  相似文献   
38.
A comparative study conducted in the Sudan illustrated both the potential of a nutrition education program for pregnant women and the many obstacles to creating more optimal maternal nutrition. Included in the study were 1200 women 18-34 years of age attending the Khartoum Province Model Clinic for a minimum of 5 prenatal visits. 83.3% were Muslims and 48.2% were illiterate. The 60 women who comprised the experimental group were exposed to individual nutrition counseling and home visits. Overall, 70% of subjects were anemic, 27% had malaria, and 18% were hookworm. The average weight gain during pregnancy was 4.5 kgs; 25.0% of controls and 20.0% of those in the experimental group gained 3.5-4.0 kgs, 18.3% of controls and 33.3% of experimental subjects gained 4.5-5.0 kgs, and 23.3% of controls and 30.0% of those in the experimental groups gained 5.5 kgs or more. 53.0% of controls and 61.7% of women exposed to nutrition education breastfed for at least 6 months, and 70% of women in the former group and 95% of those in the latter had enrolled their infants in an immunization program. A baseline nutrition questionnaire revealed widespread misinformation, especially a belief that pregnant women should reduce their food intake from 3 to 1-2 meals per day to prevent the fetus from growing too large and making labor difficult. Foods such as fermented sorghum products, fresh fish, and water melon were regarded as abortifacients and avoided, while hot pepper, sour milk, and cola sodas were considered nutritious. Consumption was self-reported to be poor for milk products by 25% of mothers, for meat by 16%, and for fruits and vegetables by 40% Although the educational intervention increased women's knowledge of basic nutrition, it had only a minimal effect on actual practice. This finding is assumed to reflect the widespread belief that men and their guests should be given preference in food allocation, poverty, and avoidance, on the basis of tradition, of many healthy foods. Since 72% of women reported ownership of a television, use if this medium is recommended for nutrition education.  相似文献   
39.
1. As the nurse-patient relationship evolves through a series of ongoing interactions, both participants become "known" and stir in each other a range of positive and negative emotional reactions. 2. When working with severely psychologically disturbed patients, the nurse's affective and behavioral response can be valuable clues to understanding the patient's early experiences that contribute to the pattern of relatedness and to the formulation of change, enhancing therapeutic interactions. 3. The goals of the countertransference peer supervision group were to recognize unconscious countertransference reactions; unravel the origin and meaning of those countertransference reactions; and collaboratively develop therapeutic nursing interventions.  相似文献   
40.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号