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531.
Belinda Johnson White 《The Career development quarterly》2009,58(1):71-76
Career success as measured by the objective, traditional criteria of the composite of high number of promotions, high annual compensation, and high organizational level in corporate America has eluded the majority of African Americans. This article describes an undergraduate business program career success intervention designed to assist African Americans in overcoming the organizational barriers present in corporate America that prevent their upward mobility, examines its effectiveness, and concludes with implications for research and practice in career development and counseling. 相似文献
532.
Jeffrey Johnson 《Innovation: The European Journal of Social Science Research》2010,23(2):115-134
The modern world is characterized by problems that involve systems with social and physical subsystems. They are entangled systems of system of systems with multilevel dynamics. There is no methodology able to combine the partial micro-, meso- and macrotheories that focus on subsystems into a coherent representation of the dynamics of the whole. Policy requires prediction, but the traditional definitions of prediction are not appropriate for multilevel socio-complex systems. Heterogeneous multilevel systems have subsystems that may behave with great regularity over long periods of time, and then suddenly change their behavior due to weak coupling with other subsystems. Thus systems that are usually highly predictable may be subject to rare but extreme events, and this is highly relevant to policy-makers. New ways of thinking are needed that transcend the confines of the traditional humanities, social and physical sciences. Of necessity, this science will be embedded in the design, implementation and management of systems, and therefore the new science will be entwined with policy. Much policy is interventionist experiment. By themselves scientists cannot conduct experiments on socio-complex systems because they have neither the mandate nor the money to design and instrument experiments on the large scale. Policy-makers – elected politicians and their officers – design the future, making it as they believe it ought to be. New kinds of scientific predictions can inform policy but can only be instrumented and tested if there is goodwill between policy-makers and scientists, where scientists are junior partners. Scientists offer policy-makers theories and predictions of social systems based on logical-deductive methods. Policy is generally made on the basis of rhetoric, with the best possible arguments being deployed to support favored conclusions. To convince policy-makers that a particular scientific theory should be used, scientists move from the logical-deductive to the rhetorical. Thus the full theory of a science of complex systems has to provide a logical-deductive metatheory of the rhetorical and logical-deductive systems that make decisions and implement them. Traditional natural and physical science has avoided rhetoric, which is much better understood in the humanities and social sciences. Thus it is concluded that the science of complex systems must embrace the humanities and social sciences not just because their domains of study are relevant but also because their methods are necessary to understand how science and policy work together in complex social systems. 相似文献
533.
534.
Wynne E. Norton PhD Jeffrey D. Fisher PhD K. Rivet Amico PhD John F. Dovidio PhD Blair T. Johnson PhD 《Journal of American college health : J of ACH》2013,61(8):574-582
Abstract Objectives: Despite findings suggesting that young adults are more concerned about experiencing an unplanned pregnancy or contracting a sexually transmitted infection (STI) than becoming human immunodeficiency virus (HIV) infected, no empirical work has investigated whether the specific focus of an intervention may be more or less efficacious at changing sexual behavior. Participants: Participants were 198 college students randomized to 1 of 4 conditions: pregnancy intervention, STI intervention, HIV intervention, or a control condition during 2008–2009. Methods: The authors compared the efficacy of 3 theory-based, sexual risk–reduction interventions that were exactly the same except for an exclusive focus on preventing pregnancy, STI, or HIV. Condom use and risky sexual behavior were assessed at baseline and 4-week and 8-week follow-up. Results: Participants exposed to the pregnancy or STI interventions reported greater condom use and less risky sexual behavior than those exposed to the HIV intervention. Conclusions: The focus of sexual risk–reduction interventions may lead to differential behavior change among young adults. 相似文献
535.
536.
William H.A. Johnson Roberto Filippini 《Journal of Engineering and Technology Management》2013,30(1):95-111
The use of integration practices, both internal (where various functions work together) and external (links with customers and suppliers during development), are espoused in the new product development (NPD) literature. However, empirical findings in the literature suggest adoption of integration practices does not necessarily lead to positive performance. We introduce the concept of integration capabilities to explain the relationship between use of integration practices and NPD performance. We tested a mediation model using data from 141 Japanese and American firms and found that effects of both types of integration on time and product performance were mediated by the integration capabilities developed. We also found differential effects of the type of integration. The findings demonstrate that developing superior integration capabilities are needed for companies to meet and exceed product development expectations in terms of both product and time performance. Simply, a company may utilize integration practices but if it does not utilize them in such a way as to generate real capabilities, the use of integration practices may not lead to positive performance effects. 相似文献
537.
Accumulating evidence shows that certain hazard combinations interact to present synergistic risks. However, little is known about the most effective ways of helping individuals to understand this complex risk concept. More specifically, there is an absence of empirical research that has assessed the relative efficacy of messages that explain either the causal mechanism and/or the probabilistic components of synergistic risks. In an experiment designed to address this issue, we presented participants with messages concerning the synergistic risk of developing esophageal cancer for individuals who consume both tobacco and alcohol. Relative to a control group, we compared the extent to which messages featuring content detailing the underlying biological mechanism, the probabilistic risk, or both improved understanding of the synergistic risk. Our results showed that messages containing details of both the mechanism and probabilistic information were most effective at enabling individuals to understand that the alcohol‐tobacco combination presents a synergistic risk. In addition, large improvements in the accuracy of cancer frequency estimates were observed amongst individuals who received probabilistic information, and the highest relative increase in professed willingness to adopt precautionary behaviors was observed amongst individuals who received the mechanism information only. Importantly, these findings could be utilized in the development of a general model for the communication of synergistic risks. Furthermore, in contrast to previous findings, our study demonstrates that risk messages can be both effective and efficient in helping individuals to acquire a greater understanding of synergistic risks. Acquiring such knowledge could lead to significant improvements in risk‐related decisions concerning combined hazards. 相似文献
538.
539.
Chetan Dave Catherine C. Eckel Cathleen A. Johnson Christian Rojas 《Journal of Risk and Uncertainty》2010,41(3):219-243
We study the estimation of risk preferences with experimental data and focus on the trade-offs when choosing between two different
elicitation methods that have different degrees of difficulty for subjects. We analyze how and when a simpler, but coarser,
elicitation method may be preferred to the more complex, but finer, one. Results indicate that the more complex measure has
overall superior predictive accuracy, but its downside is that subjects exhibit noisier behavior. Our main result is that
subjects’ numerical skills can help better assess this tradeoff: the simpler task may be preferred for subjects who exhibit
low numeracy, as it generates less noisy behavior but similar predictive accuracy. For subjects with higher numerical skills,
the greater predictive accuracy of the more complex task more than outweighs the larger noise. We also explore preference
heterogeneity and provide methodological suggestions for future work. 相似文献
540.
Regression and correlation properties of the generalized Farlie-Gumbel-Morgenstem distributions introduced in Johnson and Kotz (1975) are studied. Further generalizations of these distributions are considered. 相似文献