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71.
This paper studies optimum designs for linear models when the errors are heteroscedastic. Sufficient conditions are given
in order to obtainD-, A- andE-optimum designs for a complete regression model from partial optimum designs for some sub-parameters. A result about optimality
for a complete model from the optimality for the submodels is included.
Supported by Junta de Andalucía, research group FQM244. 相似文献
72.
73.
Dwight R. Lee 《Journal of Labor Research》2003,24(3):437-446
Reverse mandated benefits is a government-mandated policy that requires employees to provide their employers with benefits
that workers would not provide otherwise. Of course, only those benefits would be mandated that are worth more to employers
than they cost, as determined by political authorities. My case for such a policy argues that it is at least as sensible as
policies mandating that employers provide benefits to their employees that would not be provided otherwise. 相似文献
74.
This paper investigates how individuals evaluate delayed outcomes with risky realization times. Under the discounted expected utility (DEU) model, such evaluations depend only on intertemporal preferences. We obtain several testable hypotheses using the DEU model as a benchmark and test these hypotheses in three experiments. In general, our results show that the DEU model is a poor predictor of intertemporal choice behavior under timing risk. We found that individuals are averse to timing risk and that they evaluate timing lotteries in a rank-dependent fashion. The main driver of timing risk aversion is nothing but probabilistic risk aversion that stems from the nonlinear treatment of probabilities. 相似文献
75.
Prior corporate reputation, one responsibility of a public relations department, affects public perceptions toward corporate philanthropic messages and ultimately affects public attitudes toward the company. Using an experiment that emulates the sort of news consumption individuals normally undertake, participants inferred corporate charitable giving as a mutually beneficial activity when a company had a good reputation (H1a). Participants inferred corporate charitable giving as a self-interested activity when the company had a bad reputation (H1b). Also, public inference (suspicion) successfully mediated corporate prior reputation on public attitude toward the company (H2). Participants showed positive attitude toward the company when they inferred the company had an altruistic motive for charitable giving (H3a). However, participants showed negative attitude toward the company when they inferred the company had a self-interested motive for charitable giving (H3b). 相似文献
76.
Alistair Campbell 《Australian and New Zealand Journal of Family Therapy》2005,26(4):227-229
Clinical significance, statistical significance, the CBT monoculture, the politics of service provision, and the search for additional ways to be effective. 相似文献
77.
Extended Contact through Story Reading in School: Reducing Children's Prejudice toward the Disabled 总被引:2,自引:0,他引:2
The aim of this study was to develop and assess a prejudice-reduction intervention for young children based on a relatively recent psychological concept, extended contact. A number of extended contact interventions were tested based on different models of generalized intergroup contact. A 3 (type of extended contact: neutral, decategorization, and "intergroup") × 2 (time of interview: pre- vs. post-extended contacts) mixed design was used, with the latter variable being within participants. Non-disabled children ( N = 67) aged 5–10 years took part in a 6-week intervention involving reading stories featuring disabled and non-disabled children in friendship contexts. The main dependent variables were children's attitudes and intended behavior toward non-disabled and disabled people. Results showed that extended contact led to increased positivity toward the disabled, and this was most pronounced in the intergroup-extended contact condition. These findings suggest that extended contact can provide a prejudice-reduction intervention tool that can be used with young children in contexts in which the opportunity for direct contact is low. The findings also add to the psychological literature, providing support of the Hewstone and Brown (1986) "intergroup" model in the context of extended contact. 相似文献
78.
Cornelia Edding 《Organisationsberatung, Supervision, Coaching》2005,12(1):21-30
Supporting processes of belonging in supervision and coachingThe contemporary employee has to cope with frequent changes. Not only does he lose his familiar environment, he also has to find ways to familiarize himself with new places and to develop a fresh sense of belonging. This process can be understood and facilitated by interpreting the German concept of “Heimat“ as something we have to create ourselves. First experiences demonstrate the usefulness of this approach in coaching processes. 相似文献
79.
In this paper, the task of determining expected values of sample moments, where the sample members have been selected based on noisy information, is considered. This task is a recurring problem in the theory of evolution strategies. Exact expressions for expected values of sums of products of concomitants of selected order statistics are derived. Then, using Edgeworth and Cornish-Fisher approximations, explicit results that depend on coefficients that can be determined numerically are obtained. While the results are exact only for normal populations, it is shown experimentally that including skewness and kurtosis in the calculations can yield greatly improved results for other distributions. 相似文献
80.