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991.
Hurricane wind risk in a region changes over time due to changes in the number, type, locations, vulnerability, and value of buildings. A model was developed to quantitatively estimate changes over time in hurricane wind risk to wood-frame houses (defined in terms of potential for direct economic loss), and to estimate how different factors, such as building code changes and population growth, contribute to that change. The model, which is implemented in a simulation, produces a probability distribution of direct economic losses for each census tract in the study region at each time step in the specified time horizon. By changing parameter values and rerunning the analysis, the effects of different changes in the built environment on the hurricane risk trends can be estimated and the relative effectiveness of hypothetical mitigation strategies can be evaluated. Using a case study application for wood-frame houses in selected counties in North Carolina from 2000 to 2020, this article demonstrates how the hurricane wind risk forecasting model can be used: (1) to provide insight into the dynamics of regional hurricane wind risk-the total change in risk over time and the relative contribution of different factors to that change, and (2) to support mitigation planning. Insights from the case study include, for example, that the many factors contributing to hurricane wind risk for wood-frame houses interact in a way that is difficult to predict a priori, and that in the case study, the reduction in hurricane losses due to vulnerability changes (e.g., building code changes) is approximately equal to the increase in losses due to building inventory growth. The potential for the model to support risk communication is also discussed. 相似文献
992.
993.
Ann Hironaka 《Sociological inquiry》2002,72(1):108-130
Conceptions of patents have changed significantly over the past two centuries, reflecting broad changes in state structures and the international system. In the late eighteenth century, the creation of democratic states such as the United States and France encouraged the conceptualization of patents as an economic and political right belonging to an individual, rather than to a corporate body such as a guild. A second conception of patents arose in the nineteenth century in which patents become a state-based mechanism for motivating economic growth. In the late twentieth century, patents have become conceptualized as an essential part of the economic infrastructure of a state, for both industrialized and less developed countries. This conceptualization has allowed international development organizations to become central in the diffusion of patent legislation to less developed countries. These changes in conceptions about patents did not always occur smoothly, however. Major controversies over the role and usefulness of patents occurred in each century, implying that the diffusion of patent legislation was by no means inevitable. This paper illustrates these arguments with a historical discussion of patents and a statistical analysis that models the adoption of patent legislation for all countries from 1790–1984. 相似文献
994.
Mary Maguire Klute Ann C. Crouter Aline G. Sayer Susan M. McHale 《Journal of marriage and the family》2002,64(1):139-151
This study examines the associations between husbands' and wives' experiences at work and their attitudes about and behaviors in marriage, using a framework informed by the ideas of Kohn (1969, 1977) . Specifically, it was hypothesized that experiences of self‐direction at work would be associated with greater endorsement of values associated with self‐direction. Further, it was predicted that those who value self‐direction more would both prefer and adopt more egalitarian arrangements in their marriages. These hypotheses were tested with a sample of 167 dual‐earner couples. Results supported the hypotheses and suggested that values mediate the relationships between occupational self‐direction and both attitudes about marital roles and the division of household labor. The pattern of results suggests that this framework is a useful perspective for examining the construct of marital equality. 相似文献
995.
This paper investigates how changes in neighborhood facilities—new schools, health posts, bus services, mills, dairies, agricultural cooperatives, and other facilities—influence perceptions of environmental degradation. We use three types of data from a rural area in Nepal: (1) data on changing neighborhood facilities from 171 neighborhoods, collected using ethnographic, survey, and archival methods; (2) survey data on household characteristics and environmental perceptions from 1,651 households; and (3) individual-level survey data. We find that new neighborhood facilities are associated with perceptions of environmental degradation. This is important because perceptions may indicate objective environmental degradation, encourage participation in programs to improve the environmental, and influence environmental behavior. 相似文献
996.
997.
Heather M. Helms Ann C. Crouter Susan M. McHale 《Journal of marriage and the family》2003,65(4):963-977
Through in‐home interviews with 142 married couples, we explored how husbands' and wives' marriage work with close friends and one another was linked to their perceptions of marital quality. Results showed that husbands engaged in more marriage work with their wives than with close friends, whereas wives engaged in similar levels of marriage work with their close friends and husbands. For wives, marriage work with their spouses was found to moderate the relationship between marital quality and marriage work with friends. At low levels of marriage work with their spouses, wives' marriage work with friends was negatively related to their reports of marital love and positively related to reports of ineffective arguing. In contrast, at high levels of marriage work with their husbands, no significant relationship was found between wives' marriage work with friends and marital quality for wives. Findings underscore the role of spouses' friendships and suggest that the strength of spouses' ties to one another is linked to the social context they and their close friends create. 相似文献
998.
We investigate the effects of two public transit policies, subsidization and privatization, on the wages of taxi drivers.
In theory, transit operating subsidies benefit transit firms at the expense of the taxi industry and its employees. By contrast,
the privatization policy of contractingout transit service to lower cost private providers is potentially beneficial to taxi
firms and their drivers. Estimated wage equations confirm that transit operating subsidies have negatively affected taxi driver
wages even as they have bolstered transit drivers’ wages. Transit privatization has had the predicted positive effect on taxi
driver wages, all else held constant. These results suggest that a more accurate assessment of the effect of transit operating
subsidies on labor costs must encompass their net effects on the labor costs of the entire urban transportation sector, not
just the public transit industry. 相似文献
999.
Shawn D. Whiteman Susan M. McHale Ann C. Crouter 《Journal of marriage and the family》2003,65(3):608-621
This study sought evidence for the proposition that experiences with earlier‐born adolescents will improve parents' interactions with and parenting of later‐born adolescents. Participants were mothers, fathers, and both first‐ and second‐born siblings from 392 families participating in a longitudinal study. To collect information on siblings' family experiences, family members were interviewed individually in their homes. During the subsequent 2 to 3 weeks, 7 evening telephone interviews were also conducted, which focused on siblings' daily activities. Findings suggest that when parent‐adolescent relationships were measured at the same age for both siblings, parents experienced less conflict with their second‐born as compared with their firstborn adolescent offspring and exhibited greater knowledge of their second‐born offspring's daily activities as compared with their firstborns' daily experiences. These results are consistent with the notion that parents may learn from their childrearing experiences. 相似文献
1000.
What Do People Know About Global Climate Change? 2. Survey Studies of Educated Laypeople 总被引:5,自引:0,他引:5
Daniel Read Ann Bostrom M. Granger Morgan Baruch Fischhoff Tom Smuts 《Risk analysis》1994,14(6):971-982
Drawing on results from earlier studies that used open-ended interviews, a questionnaire was developed to examine laypeople's knowledge about the possible causes and effects of global warming, as well as the likely efficacy of possible interventions. It was administered to two well-educated opportunity samples of laypeople. Subjects had a poor appreciation of the facts that (1) if significant global warming occurs, it will be primarily the result of an increase in the concentration of carbon dioxide in the earth's atmosphere, and (2) the single most important source of additional carbon dioxide is the combustion of fossil fuels, most notably coal and oil. In addition, their understanding of the climate issue was encumbered with secondary, irrelevant, and incorrect beliefs. Of these, the two most critical are confusion with the problems of stratospheric ozone and difficulty in differentiating between causes and actions specific to climate and more general good environmental practice. 相似文献