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991.
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   
992.
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   
993.
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   
994.
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   
995.
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   
996.
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   
997.
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   
998.
Layered defenses are necessary for protecting the public from terrorist attacks. Designing a system of such defensive measures requires consideration of the interaction of these countermeasures. In this article, we present an analysis of a layered security system within the lower Manhattan area. It shows how portfolios of security measures can be evaluated through portfolio decision analysis. Consideration is given to the total benefits and costs of the system. Portfolio diagrams are created that help communicate alternatives among stakeholders who have differing views on the tradeoffs between security and economic activity.  相似文献   
999.
In emergent photovoltaics, nanoscale materials hold promise for optimizing device characteristics; however, the related impacts remain uncertain, resulting in challenges to decisions on strategic investment in technology innovation. We integrate multi‐criteria decision analysis (MCDA) and life‐cycle assessment (LCA) results (LCA‐MCDA) as a method of incorporating values of a hypothetical federal acquisition manager into the assessment of risks and benefits of emerging photovoltaic materials. Specifically, we compare adoption of copper zinc tin sulfide (CZTS) devices with molybdenum back contacts to alternative devices employing graphite or graphene instead of molybdenum. LCA impact results are interpreted alongside benefits of substitution including cost reductions and performance improvements through application of multi‐attribute utility theory. To assess the role of uncertainty we apply Monte Carlo simulation and sensitivity analysis. We find that graphene or graphite back contacts outperform molybdenum under most scenarios and assumptions. The use of decision analysis clarifies potential advantages of adopting graphite as a back contact while emphasizing the importance of mitigating conventional impacts of graphene production processes if graphene is used in emerging CZTS devices. Our research further demonstrates that a combination of LCA and MCDA increases the usability of LCA in assessing product sustainability. In particular, this approach identifies the most influential assumptions and data gaps in the analysis and the areas in which either engineering controls or further data collection may be necessary.  相似文献   
1000.
The cost of an uncontrolled incursion of invasive alien species (IAS) arising from undetected entry through ports can be substantial, and knowledge of port‐specific risks is needed to help allocate limited surveillance resources. Quantifying the establishment likelihood of such an incursion requires quantifying the ability of a species to enter, establish, and spread. Estimation of the approach rate of IAS into ports provides a measure of likelihood of entry. Data on the approach rate of IAS are typically sparse, and the combinations of risk factors relating to country of origin and port of arrival diverse. This presents challenges to making formal statistical inference on establishment likelihood. Here we demonstrate how these challenges can be overcome with judicious use of mixed‐effects models when estimating the incursion likelihood into Australia of the European (Apis mellifera) and Asian (A. cerana) honeybees, along with the invasive parasites of biosecurity concern they host (e.g., Varroa destructor). Our results demonstrate how skewed the establishment likelihood is, with one‐tenth of the ports accounting for 80% or more of the likelihood for both species. These results have been utilized by biosecurity agencies in the allocation of resources to the surveillance of maritime ports.  相似文献   
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