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291.
This paper examines the effect of legal access to marijuana on student performance stemming from a voter-approved initiative legalizing marijuana for those 21 and older in the State of Washington. Using panel data from a medium-sized public university, we use a within-student and within-class estimator to show that legalization reduces students' grades, with an effect size about one-half the impact of gaining legal access to alcohol. Consistent with how marijuana consumption affects cognitive functioning, we find that students' grades fall furthest in courses that require more quantitative skills. These effects are largely driven by men and low performers. (JEL I23, I18, K32)  相似文献   
292.
In comparing a collection of K populations, it is common practice to display in one visualization confidence intervals for the corresponding population parameters θ1, θ2, …, θK. For a pair of confidence intervals that do (or do not) overlap, viewers of the visualization are cognitively compelled to declare that there is not (or there is) a statistically significant difference between the two corresponding population parameters. It is generally well known that the method of examining overlap of pairs of confidence intervals should not be used for formal hypothesis testing. However, use of a single visualization with overlapping and nonoverlapping confidence intervals leads many to draw such conclusions, despite the best efforts of statisticians toward preventing users from reaching such conclusions. In this article, we summarize some alternative visualizations from the literature that can be used to properly test equality between a pair of population parameters. We recommend that these visualizations be used with caution to avoid incorrect statistical inference. The methods presented require only that we have K sample estimates and their associated standard errors. We also assume that the sample estimators are independent, unbiased, and normally distributed.  相似文献   
293.
What does the work that LGBTQ parents do to find resources for their disabled children reveal about the social organization of services? This article presents findings from an institutional ethnography study based on interviews with 15 lesbian, gay, bisexual, transgender, and/or queer (LGBTQ) parents and six key community informants in Toronto, Canada. The analysis focused on the work parents did to engage with disability service systems on behalf of their children, and the ways in which families’ social privilege and/or marginalization affected their experiences. Particular attention was paid to the ways in which “parent advocacy” was taken up, responded to, and critiqued in these interviews. “Parent advocacy” was found to operate as what Dorothy Smith has called an “ideological code” (Smith 1999), offloading systemic responsibilities onto parents, shielding inequities, and promoting individualized competition between service users. This study suggests that the systemic organization that makes “parent advocacy” necessary also renders parents’ relative privilege or marginality central to what their children receive.  相似文献   
294.
ABSTRACT

China, one of the world’s most clandestine states, is currently engaged in moves to make state secrecy a matter of public policy, even inaugurating a ‘National Security Education Day’ in 2016. This article explores some recent campaigns about spy-catching to show how the state is using crowdsourcing, content marketing, and prosumerist gambits to sell an emergent social space of civic duty that I term the cryptosphere. Inciting civic participation is a particularly deft tool for propaganda work of this kind, which pivots on performative ideology. The ostensible purpose of these campaigns is to enlist the Chinese people in the securitization of the state, but in practice this is a highly disingenuous move given that the realm of the classified in China is so vast that ‘keeping secrets’ can only be perfunctory for almost all of its citizens. So far, commentators outside China have either been amused by the state’s new forays into infographics and mash-up videos, or critical of their xenophobic messaging. But the state’s apparently light-hearted drive to remind the Chinese people of the need to track spies is only peripherally about foreigners. It is occurring at a time when the government is also trialling a vast algorithmic grab on its own citizens’ personal data via the social credit system; operating a CCTV surveillance regime of more than one million cameras; and conducting mandatory biometric profiling in Xinjiang using DNA, blood types, iris scans, and fingerprints. These policies, I argue, constitute the exoskeleton of the cryptosphere. But this new sphere also needs its soft padding. Propaganda campaigns which school subjects on how to perform the role of loyal ‘informants’ – at the very moment that their own information is increasingly being expropriated by the state – are providing just this kind of thought work cushion.  相似文献   
295.
296.
This paper introduces a sampling plan for finite populations herein called “variable size simple random sampling” and compares properties of estimators based on it with results from the usual fixed size simple random sampling without replacement. Necessary and sufficient conditions (in the spirit of Hajek (1960)) for the limiting distribution of the sample total (or sample mean) to be normal are given.  相似文献   
297.
As subsidiaries' cross-border knowledge increases in tacitness, it becomes more difficult for subsidiaries to articulate and for multinational corporations' (MNCs') headquarters to integrate and apply. Herein, dynamic capabilities and social capital theory frame structural and relational social capital as capabilities that improve the productivity of subsidiaries' cross-border knowledge tacitness shared on MNCs' headquarters explorative and exploitative innovation capability. The hypotheses are tested on a data set consisting of survey data collected from 220 senior managers or executives at the headquarters of Taiwan-based MNCs. Interestingly, structural social capital between headquarters and subsidiaries strengthens the negative association between subsidiaries' cross-border knowledge tacitness shared and explorative innovation capability; relational social capital attenuates the negative association between subsidiaries' cross-border knowledge tacitness shared and both explorative and exploitative innovation capability. Stated differently, different types of social capital can facilitate (i.e., relational social capital) or impede (i.e., structural social capital) innovation capability when cross-border knowledge tacitness is high. The validity and managerial implications of these findings are explored through interviews with senior managers or executives of MNCs headquarters or subsidiaries. Theoretically, this study emphasizes the importance of understanding relationships between subsidiaries and MNCs' headquarters to understand the association between subsidiaries' resources and MNCs' headquarters innovation capability.  相似文献   
298.
299.
The authors investigated differences in interpersonal influences on career decision making between gay, lesbian, and bisexual (GLB) and heterosexual college students. Contrary to hypotheses, GLB students reported having more career role models than did heterosexual students, and the amount of inspiration received from role models did not differ between the 2 groups. However, GLB students perceived they received less support and guidance from others in their academic and career decision making. As expected, GLB students were more likely to endorse the importance of a career role model's sexual orientation and support of people with their own sexual orientation. Career intervention and research implications are discussed.  相似文献   
300.
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