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   11257篇
  免费   186篇
管理学   1613篇
民族学   51篇
人才学   1篇
人口学   1171篇
丛书文集   60篇
教育普及   1篇
理论方法论   955篇
现状及发展   1篇
综合类   134篇
社会学   5284篇
统计学   2172篇
  2023年   76篇
  2022年   58篇
  2020年   162篇
  2019年   220篇
  2018年   259篇
  2017年   354篇
  2016年   282篇
  2015年   180篇
  2014年   238篇
  2013年   1927篇
  2012年   381篇
  2011年   310篇
  2010年   256篇
  2009年   245篇
  2008年   274篇
  2007年   269篇
  2006年   245篇
  2005年   254篇
  2004年   240篇
  2003年   214篇
  2002年   243篇
  2001年   282篇
  2000年   284篇
  1999年   266篇
  1998年   180篇
  1997年   171篇
  1996年   165篇
  1995年   163篇
  1994年   132篇
  1993年   150篇
  1992年   167篇
  1991年   145篇
  1990年   156篇
  1989年   181篇
  1988年   151篇
  1987年   136篇
  1986年   149篇
  1985年   168篇
  1984年   165篇
  1983年   156篇
  1982年   123篇
  1981年   105篇
  1980年   102篇
  1979年   137篇
  1978年   88篇
  1977年   87篇
  1976年   87篇
  1975年   80篇
  1974年   80篇
  1973年   73篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Two within household telephone sampling techniques for collecting citizen survey data for community mental health center's needs assessments were compared on the basis of respondent demographic characteristics; response, completion, and refusal rates; and, administrative costs. Initially, all households were chosen via random digit dialing. Then, one technique allowed the surveyor to interview any adult member of a household who answered the phone. The other technique used was developed by Troldahl and Carter and required the use of a reference table procedure to determine the appropriate respondent. While more expensive, the Troldahl-Carter method produced significantly better representativeness of the population for a rural county. Factors relating to a decision regarding which technique to employ are discussed.  相似文献   
992.
Previous research has examined self-identified sexual orientation in relation to self-reports on the Big Five personality factors. Here we extend this research by including asexuality as a fourth sexual orientation and by assessing the HEXACO personality factors, using self-report data from a large anonymous online sample (N ≈ 100,000). A large overlap was observed among all sexual orientation groups on all six HEXACO dimensions, but notable group differences also emerged. All nonheterosexual groups, particularly bisexual people, averaged higher in openness to experience than did heterosexuals. Heterosexual men averaged much lower in emotionality than heterosexual women, but only a small difference was observed between gay men and lesbians on this dimension. Asexual men and women averaged lower in extraversion and in some facets of emotionality (specifically, dependence and sentimentality) than did the other sexual orientation groups of the same sex. Results are discussed in relation to the different social realities that each sexual orientation group often experiences, along with the (gender-related) developmental influences hypothesized to underlie in part the origins of sexual orientation.  相似文献   
993.
Understanding contemporary urban landscapes requires multiple sets of spatially and temporally compatible data that can integrate historical land use patterns and disturbances to land cover. This paper presents three principal methods: (1) core analysis; (2) historic mapping; and (3) gradient analysis, to link spatial and temporal data for urban ecosystems and applies their use in the Baltimore-Chesapeake region. Paleoecological evidence derived from the geochronology of sediment cores provides data on long-term as well as recent changes in vegetative land cover. This information, combined with contemporary vegetation maps, provides a baseline for conducting trend analyses to evaluate urbanization of the landscape. A 200-year historical land use database created from historical maps, census data, and remotely sensed data provides a spatial framework for investigating human impacts on the region. A geographic information system (GIS) integrates core analyses with historic data on land use change to yield a comprehensive land use and land cover framework and rates of change. These data resources establish the regional foundation for investigating the ecological components of an urban ecosystem. Urban-rural gradient analyses and patch analyses are proposed as the most appropriate methods for studying the urban ecosystem as they link ecological and social patterns and processes for varying degrees of urbanization.  相似文献   
994.
In an experiment, thirty-six professional insurance men employed the utility method, the worry method, and the comparison method in two insurance problems to determine the appropriate insurance coverage. It was found that the best act with the utility method almost always was no insurance, whereas the best act with the other two methods tended to be complete insurance. The utility method best act rarely agreed with the subject's actual preferred act, while the comparison method best act usually was the same or almost the same as the actual preferred act. While the worry method suggests that the subjects typically are risk averse, the utility functions obtained tend to show that the subjects typically are not risk averse.  相似文献   
995.
Although Latinas/os have a long history in the USA and represent a growing percentage of the population, they remain largely invisible or stereotyped in dominant images and discourses. Such representations are often ahistorical, and they camouflage the effects of US power and inequality. However, the spring 2006 immigrant rights demonstrations disturbed dominant conceptions. The demonstrators called attention to the contradictory US practices that disrupt home countries, recruit labor migrants, and deny immigrants full participation. Likewise, the role of students in these demonstrations spurred reflections on why youth would walk out of their schools for immigrant rights. Inspired by these demonstrations, we combine materials from multiple disciplines to emphasize the significance of US imperialism, exploitation, and exclusion on Latina/o migration, education, and activism. Key to this article is a reframing of how the media, K-12 curriculum, and popular discourse often engage in a cultural cover-up that sustains inequality.  相似文献   
996.
This invited commentary responds to recent criticisms of two validated and widely used sexual function questionnaires, the Female Sexual Function Index (FSFI) and the International Index of Erectile Function (IIEF) (Forbes, Baillie, &; Schniering, 2014 Forbes , M. K. , Baillie , A. J. , &; Schniering , C. A. ( 2014 ). Critical flaws in the Female Sexual Function Index and the International Index of Erectile Function . Journal of Sex Research , 51 , 485491 . doi: 10.1080/00224499.2013.876607 [Taylor &; Francis Online], [Web of Science ®] [Google Scholar]). We take issue with the conceptual arguments presented, selective review of published literature on both instruments, and conclusions drawn from methodologically flawed findings from an Internet-based study in a nonrepresentative group of Australian men and women. Alternative perspectives on the IIEF and FSFI are presented.  相似文献   
997.
The migration of political asylum seekers into the United States has long been a salient political topic; however, social scientists have yet to examine this process in its entirety and in the context of political changes since September 11, 2001. Previous research shows that humanitarian and strategic interests are important for decisions made by asylum officers but that research overlooks the decisions made by immigration judges. Here we examine decisions made by both asylum officers and immigration judges using data from a global set of countries, from 1999 to 2004. We find that the waning importance of human rights is more pronounced for asylum officers than for immigration judges after the attack on the World Trade Center. We also find that language heritage, specifically for asylum seekers from English‐, Spanish‐, and Arabic‐speaking countries, substantially affects acceptance rates made by both decision‐makers between the two time periods of our study.  相似文献   
998.
Social Indicators Research and Health-Related Quality of Life Research   总被引:3,自引:7,他引:3  
The aim of this essay is to build a bridgebetween two intersecting areas of research,social indicators research on the one hand andhealth-related quality of life research on theother. The first substantive section of thepaper introduces key concepts and definitionsin the social indicators research tradition,e.g., social indicators, positive, negative,input and output indicators, social reports andquality of life. After that, there is asection reviewing some historical origins andmotives of social indicators researchers,beginning roughly with Jeremy Bentham's`felicific calculus' and ending with the searchfor a comprehensive accounting scheme capableof measuring the quality of human existencewith social, economic and environmentalindicators.Results of eleven surveys are reviewed whichwere undertaken to explain happiness on thebasis of levels of satisfaction thatrespondents got from a dozen specific domainsof their lives, e.g., satisfaction with theirjobs, family relations and health. On average,for the eleven samples, we were able to explain38% of the variance in reported happiness fromsome subset of the predictor variables. Satisfaction with one's own health was never the strongest predictor of happiness inany sample. In five of the eleven samples,satisfaction with one's own health failed toenter the final explanatory regression equationfor lack of statistical significance. Theresults in this section of the essay show thatdifferent groups of people with different lifecircumstances, resources and constraints usedifferent mixtures of ingredients to determinetheir happiness.After examining some research revealing therelative importance of people's satisfaction with their health to theiroverall happiness, I consider some studiesrevealing the importance of people's self-reported health to their overallhappiness. Self-reported health is measuredprimarily by the eight dimensions of SF-36.When a variety of additional potentialpredictors are entered into our regressionequation, 44% of the variance in happinessscores is explained, but only one of the eightdimensions of SF-36 remains, namely, MentalHealth. The latter accounts for a mere four%age points out of the total 44. Thus,self-reported health has relatively little tocontribute toward respondents' reportedhappiness, and its measured contribution issignificantly affected by the number and kindsof potential predictors employed.Two approaches to explaining people'ssatisfaction with their own health areconsidered. First, using the same set ofhealth-related potential predictors of overallhappiness, we are able to explain 56% of thevariance in respondents' satisfaction withtheir own health. Then, using MultipleDiscrepancies Theory, we are able to explainabout 51% of the variation in satisfactionwith one's own health scores for 8,076undergraduates, with highs of 76% for a sampleof Finnish females and 72% for Korean males.Accordingly, it is reasonable to conclude thatif one's aim is to explain people'ssatisfaction with their own health, thepotential predictors assembled in MDT canprovide quite a bit and sometimes even moreexplanatory power than a reasonably broad setof measures of self-reported health.In the penultimate section of the essay it isargued that there are good reasons forcarefully distinguishing ideas of health andquality of life, and for not interpreting SF-36and SIP scores as measures of the quality oflife. It is suggested that we might all bebetter off if the term `health-related qualityof life' is simply abandoned. However, sincethis is unlikely to happen, it is stronglyrecommended that researchers be much morecareful with their usage of the phrase andtheir interpretation of purported measures ofwhatever the phrase is supposed to designate.  相似文献   
999.
Jain and Gupta (1973) have given a generalized logarithmic series distribution which, for β = 1, reduces to the logarithmic series distribution. In this note we obtain the distribution of the sum of independent generalized logarithmic series variables. This distribution conforms, in a special case, to the First-type Stirling distribution (Patil and Wani, 1965) and would be useful in estimation theory.  相似文献   
1000.
Research across a variety of risk domains finds that the risk perceptions of professionals and the public differ. Such risk perception gaps occur if professionals and the public understand individual risk factors differently or if they aggregate risk factors into overall risk differently. The nature of such divergences, whether based on objective inaccuracies or on differing perspectives, is important to understand. However, evidence of risk perception gaps typically pertains to general, overall risk levels; evidence of and details about mismatches between the specific level of risk faced by individuals and their perceptions of that risk is less available. We examine these issues with a paired data set of professional and resident assessments of parcel‐level wildfire risk for private property in a wildland–urban interface community located in western Colorado, United States. We find evidence of a gap between the parcel‐level risk assessments of a wildfire professional and numerous measures of residents’ risk assessments. Overall risk ratings diverge for the majority of properties, as do judgments about many specific property attributes and about the relative contribution of these attributes to a property's overall level of risk. However, overall risk gaps are not well explained by many factors commonly found to relate to risk perceptions. Understanding the nature of these risk perception gaps can facilitate improved communication by wildfire professionals about how risks can be mitigated on private lands. These results also speak to the general nature of individual‐level risk perception.  相似文献   
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