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11.
Scharadin Benjamin Yu Yang Jaenicke Edward C. 《Review of Economics of the Household》2021,19(2):399-428
Review of Economics of the Household - In early 2020, a novel coronavirus quickly spread across the globe. In response to the rapidly increasing number of confirmed U.S. cases, state and local... 相似文献
12.
Ofir Harari Grace Hsu Louis Dron Jay J. H. Park Kristian Thorlund Edward J. Mills 《Pharmaceutical statistics》2021,20(2):256-271
The Bayesian paradigm provides an ideal platform to update uncertainties and carry them over into the future in the presence of data. Bayesian predictive power (BPP) reflects our belief in the eventual success of a clinical trial to meet its goals. In this paper we derive mathematical expressions for the most common types of outcomes, to make the BPP accessible to practitioners, facilitate fast computations in adaptive trial design simulations that use interim futility monitoring, and propose an organized BPP-based phase II-to-phase III design framework. 相似文献
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Ibrahim Mike Okumu Edward Bbaale 《Development policy review : the journal of the Overseas Development Institute》2019,37(6):735-749
This article undertakes a diagnostic study of the Technical and Vocational Education and Training (TVET) sub‐sector in Uganda, with a view to characterizing the sub‐sector and identifying its potential strengths and weakness. We undertook a cross‐sectional pre‐survey of purposively selected key stakeholders in the TVET sub‐sector. We selected performance indicators following their importance in influencing the TVET reform process. Both qualitative and quantitative data was solicited from the stakeholders. Quantitative data was collected through stakeholder‐specific structured questionnaires, whilst qualitative data was collected through desk review and field visits, individual focused interviews and focus group discussions. Our findings indicate that financing and planning constraints have resulted in poor quality equipment, under‐ and ill‐trained staff, limited adoption of a competence‐based education and training (CBET) curriculum, not to mention the supervision inadequacies of TVET institutions. Besides, the limited TVET sub‐sector interaction with the private sector has incapacitated TVET curriculum development to nurture skills demanded by the private sector. Furthermore, backward technology use in the private sector has equally inhibited the success of student attachment programmes. Finally, legal ambiguities have perpetuated a qualification jungle and overlapping curricula. 相似文献
15.
Information Seeking about Global Climate Change among Adolescents: The Role of Risk Perceptions, Efficacy Beliefs and Parental Influences 总被引:2,自引:0,他引:2
E Mead C Roser-Renouf RN Rimal JA Flora EW Maibach A Leiserowitz 《Atlantic journal of communication》2012,20(1):31-52
Global climate change is likely to have significant impacts on public health. Effective communication is critical to informing public decision making and behavior to mitigate climate change. An effective method of audience segmentation, the risk perception attitude (RPA) framework has been previously tested with other health behaviors and classifies people into 4 groups on the basis of their perceptions of risk and beliefs about personal efficacy. The 4 groups - indifference (low risk, weak efficacy), proactive (low risk, strong efficacy), avoidance (high risk, weak efficacy), and responsive (high risk, strong efficacy) - are hypothesized to differ in their self-protective behaviors and in their motivations to seek information. In this paper, we extend the RPA framework in two ways. First, we use it at the household level to determine whether parental classifications into the 4 groups are associated with their teenage children's classification into the same 4 groups. Second, we predict adolescent information-seeking behaviors on the basis of their and their parents' membership in the 4 RPA groups. Results (N = 523 parent-adolescent pairs) indicated that parental membership in the 4 RPA groups was significantly associated with children's membership in the same 4 groups. Furthermore, the RPA framework was a significant predictor of adolescent information-seeking: those in the responsive and avoidance groups sought more information on climate change than the indifference group. Family communication on global warming was positively associated with adolescents' information-seeking. Implications for interventions are discussed. 相似文献
16.
Karla A. Lassonde Carolina Surla Jeffrey A. Buchanan Edward J. O'Brien 《Journal of Aging Studies》2012,26(2):174-181
Ageism is an important topic in our society, considering the burgeoning older adult population. Ageism is often measured using explicit questionnaires; however, given the impact of social desirability, implicit measures of ageism have been developed. In this study, the contradiction paradigm, an implicit measure of stereotypes (Lassonde, under review) was used to measure age-related stereotypes in passages describing older adults. Participants read passages with target sentences more slowly when these sentences described behaviors that were inconsistent rather than consistent with age-related stereotypes. Participants also completed a series of self-report questionnaires measuring ageism. Results demonstrated that reading times using the contradiction paradigm were not related to outcomes on the self-report questionnaires. A comparison of the contradiction paradigm to a social desirability scale revealed that it was not vulnerable to social desirability. This confirms the contradiction paradigm's use as an implicit measure of age-related stereotypes. Although there is no clear relation between the contradiction paradigm and popular explicit measures, a next important step would be to determine the point in which implicit knowledge and intentional behavioral responses interact. 相似文献
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Edward E. Gbur 《统计学通讯:模拟与计算》2013,42(5):531-535
A commonly used statistic for testing hypotheses concerning count data is the index of dispersion or variance test (c.f., Fisher 1950, Rao and Chakravarti 1956). The statistic is essentially the ratio of the sample variance to the sample mean,The hypothesis being tested is commonly referred to as the homogeneity hypothesis, often without further detailed specification. However, a closer study of the literature indicates that there are really two different hypotheses of interest. 相似文献
18.
Research shows that those with greater social capital enjoy better physical and mental health. The current study illuminates a paradox of social capital which may afflict those involved in traumatic events. Several years of survey data reveal a dynamic picture of the link between social capital and stress following Hurricane Katrina. Results reveal that initially after Katrina, those who were more socially embedded carried the greatest load with respect to helping the displaced population, thus experiencing more stress. But over time, the most socially-involved then snapped back from their stressful experiences more rapidly than isolates. This confirms that over the course of stressful events, social involvement first exposes people to more stress, but as time passes, provides them a significant buffer against negative psychosocial experiences. 相似文献
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Scheduling in a Management Context: Uncertain Processing Times and Non-Regular Performance Measures*
Decision makers often face scheduling problems in which processing times are not known with certainty. Non-regular performance measures, in which both earliness and tardiness are penalized, are also becoming more common in both manufacturing and service operations. We model a managerial environment with task processing times (which include sequenceindependent set-up times) prescribed by three-parameter lognormal distributions. Upon completion, each task derives a reward given by a particular piecewise-linear reward function. The objective is to select a sequence of tasks maximizing the expected total reward. The relative generality of the problem renders many enumerative methods inapplicable or computationally intractable. To overcome such difficulties we develop efficient priorityinduced construction (PIC) heuristics which build up a complete schedule by inserting tasks (singly from a list) into a partial sequence of tasks. In each partial and complete sequence a period of idle time is permitted prior to the first task. Performance on realistic-sized problems is very encouraging, with cost penalties averaging less than one percent. 相似文献