全文获取类型
收费全文 | 1264篇 |
免费 | 28篇 |
专业分类
管理学 | 247篇 |
民族学 | 11篇 |
人口学 | 92篇 |
丛书文集 | 5篇 |
理论方法论 | 154篇 |
综合类 | 5篇 |
社会学 | 551篇 |
统计学 | 227篇 |
出版年
2022年 | 8篇 |
2020年 | 13篇 |
2019年 | 35篇 |
2018年 | 36篇 |
2017年 | 31篇 |
2016年 | 25篇 |
2015年 | 25篇 |
2014年 | 31篇 |
2013年 | 266篇 |
2012年 | 35篇 |
2011年 | 43篇 |
2010年 | 33篇 |
2009年 | 31篇 |
2008年 | 30篇 |
2007年 | 31篇 |
2006年 | 25篇 |
2005年 | 34篇 |
2004年 | 28篇 |
2003年 | 17篇 |
2002年 | 38篇 |
2001年 | 24篇 |
2000年 | 22篇 |
1999年 | 27篇 |
1998年 | 18篇 |
1997年 | 20篇 |
1996年 | 18篇 |
1995年 | 11篇 |
1994年 | 10篇 |
1993年 | 18篇 |
1992年 | 13篇 |
1991年 | 15篇 |
1990年 | 12篇 |
1989年 | 14篇 |
1988年 | 13篇 |
1987年 | 17篇 |
1986年 | 11篇 |
1985年 | 18篇 |
1984年 | 17篇 |
1983年 | 14篇 |
1982年 | 13篇 |
1981年 | 18篇 |
1979年 | 9篇 |
1978年 | 11篇 |
1976年 | 14篇 |
1975年 | 13篇 |
1974年 | 8篇 |
1972年 | 9篇 |
1971年 | 10篇 |
1969年 | 7篇 |
1968年 | 7篇 |
排序方式: 共有1292条查询结果,搜索用时 756 毫秒
201.
202.
While sexual orientation diversity can potentially serve as a source of competitive advantage, researchers have largely failed to fully articulate the theoretical linkage between this diversity form and organizational effectiveness. As such, we propose a theoretical framework to understand these dynamics. Sexual orientation diversity is posited to positively contribute to organizational effectiveness through three mechanisms: enhanced decision making capabilities, improved marketplace understanding, and goodwill associated with engaging in socially responsible practices. We also propose two approaches to leveraging the benefits of sexual orientation diversity: targeting the categorization process and creating a proactive and inclusive diversity culture. Contributions and implications are discussed. 相似文献
203.
Cunningham GB 《Journal of homosexuality》2011,58(8):1041-1057
Drawing from creative capital theory, the purpose of this study was to examine the degree to which sexual orientation diversity and commitment to diversity were predictive of workplaces that fostered creativity. Data were collected from 653 senior level athletic administrators and aggregated to the athletic department level of analysis (n = 199). Moderated regression indicated that sexual orientation diversity did not influence the presence of a creative work environment. There was however, a significant sexual orientation diversity × commitment to diversity interaction. When commitment to diversity was high, there was a positive association between sexual orientation diversity and a creative work environment; on the other hand, when commitment to diversity was low, the aforementioned relationship was negative. Results provide support for the notion that all diversity forms can be a source of enrichment and understanding, thereby benefiting the workplace. 相似文献
204.
Skilled migration is an important strategy in developed economies seeking to address skills shortages and population ageing. Research on the labour market outcomes of skilled migrants tends to focus on employers' devaluation of skills without considering the role of immigration policy in the migration process. Moreover, there is little understanding of whether efforts to meet employer demands for local qualifications improve labour market outcomes. Drawing on a study on skilled migrants sponsored under the State-Specific and Regional Migration Scheme in the regional state of South Australia, we explore the shaping of skills and skills recognition in the migration journey, particularly migrants' strategy of reskilling in response to employer demands for local qualifications. Our logistic regressions on the association between the acquisition of Australian qualifications and labour market outcomes reveal only marginal returns to these efforts. We argue that Australia should consider developing a more coherent skilled migration process to better harness the human capital of skilled migrants. 相似文献
205.
Large databases of routinely collected data are a valuable source of information for detecting potential associations between drugs and adverse events (AE). A pharmacovigilance system starts with a scan of these databases for potential signals of drug-AE associations that will subsequently be examined by experts to aid in regulatory decision-making. The signal generation process faces some key challenges: (1) an enormous volume of drug-AE combinations need to be tested (i.e. the problem of multiple testing); (2) the results are not in a format that allows the incorporation of accumulated experience and knowledge for future signal generation; and (3) the signal generation process ignores information captured from other processes in the pharmacovigilance system and does not allow feedback. Bayesian methods have been developed for signal generation in pharmacovigilance, although the full potential of these methods has not been realised. For instance, Bayesian hierarchical models will allow the incorporation of established medical and epidemiological knowledge into the priors for each drug-AE combination. Moreover, the outputs from this analysis can be incorporated into decision-making tools to help in signal validation and posterior actions to be taken by the regulators and companies. We discuss in this paper the apparent advantage of the Bayesian methods used in safety signal generation and the similarities and differences between the two widely used Bayesian methods. We will also propose the use of Bayesian hierarchical models to address the three key challenges and discuss the reasons why Bayesian methodology still have not been fully utilised in pharmacovigilance activities. 相似文献
206.
Let \(\mathbb{N } = \{1, 2, 3, \ldots \}\) . Let \(\{X, X_{n}; n \in \mathbb N \}\) be a sequence of i.i.d. random variables, and let \(S_{n} = \sum _{i=1}^{n}X_{i}, n \in \mathbb N \) . Then \( S_{n}/\sqrt{n} \Rightarrow N(0, \sigma ^{2})\) for some \(\sigma ^{2} < \infty \) whenever, for a subsequence \(\{n_{k}; k \in \mathbb N \}\) of \(\mathbb N \) , \( S_{n_{k}}/\sqrt{n_{k}} \Rightarrow N(0, \sigma ^{2})\) . Motivated by this result, we study the central limit theorem along subsequences of sums of i.i.d. random variables when \(\{\sqrt{n}; n \in \mathbb N \}\) is replaced by \(\{\sqrt{na_{n}};n \in \mathbb N \}\) with \(\lim _{n \rightarrow \infty } a_{n} = \infty \) . We show that, for given positive nondecreasing sequence \(\{a_{n}; n \in \mathbb N \}\) with \(\lim _{n \rightarrow \infty } a_{n} = \infty \) and \(\lim _{n \rightarrow \infty } a_{n+1}/a_{n} = 1\) and given nondecreasing function \(h(\cdot ): (0, \infty ) \rightarrow (0, \infty )\) with \(\lim _{x \rightarrow \infty } h(x) = \infty \) , there exists a sequence \(\{X, X_{n}; n \in \mathbb N \}\) of symmetric i.i.d. random variables such that \(\mathbb E h(|X|) = \infty \) and, for some subsequence \(\{n_{k}; k \in \mathbb N \}\) of \(\mathbb N \) , \( S_{n_{k}}/\sqrt{n_{k}a_{n_{k}}} \Rightarrow N(0, 1)\) . In particular, for given \(0 < p < 2\) and given nondecreasing function \(h(\cdot ): (0, \infty ) \rightarrow (0, \infty )\) with \(\lim _{x \rightarrow \infty } h(x) = \infty \) , there exists a sequence \(\{X, X_{n}; n \in \mathbb N \}\) of symmetric i.i.d. random variables such that \(\mathbb E h(|X|) = \infty \) and, for some subsequence \(\{n_{k}; k \in \mathbb N \}\) of \(\mathbb N \) , \( S_{n_{k}}/n_{k}^{1/p} \Rightarrow N(0, 1)\) . 相似文献
207.
The American Community Survey (ACS) is a U.S. Census Bureau product designed to provide accurate and timely demographic and
economic indicators on an annual basis for both large and small geographic areas within the United States. Operational plans
call for ACS to serve not only as a substitute for the decennial census long-form, but as a means of providing annual data
at the national, state, county, and subcounty levels. In addition to being highly ambitious, this approach represents a major
change in how data are collected and interpreted. Two of the major questions facing the ACS are its functionality and usability.
This paper explores the latter of these two questions by examining “persons per household (PPH),” a variable of high interest
to demographers and others preparing regular post-censal population estimates. The data used in this exploration are taken
from 18 of the counties that formed the set of 1999 ACS test sites. The examination proceeds by first comparing 1-year ACS
PPH estimates to Census 2010 PPH values along with extrapolated estimates generated using a geometric model based on PPH change
between the 1990 and 2000 census counts. Both sets of estimates are then compared to annual 2001–2009 PPH interpolated estimates
generated by a geometric model based on PPH from the 2000 census to the 2010 census. The ACS PPH estimates represent what
could be called the “statistical perspective” because variations in the estimates of specific variables over time and space
are viewed largely by statisticians with an eye toward sample error. The model-based PPH estimates represent a “demographic
perspective” because PPH estimates are largely viewed by demographers as varying systematically and changing relatively slowly
over time, an orientation stemming from theory and empirical evidence that PPH estimates respond to demographic and related
determinants. The comparisons suggest that the ACS PPH estimates exhibit too much “noisy” variation for a given area over
time to be usable by demographers and others preparing post-censal population estimates. These findings should be confirmed
through further analysis and suggestions are provided for the directions this research could take. We conclude by noting that
the statistical and demographic perspectives are not incompatible and that one of the aims of our paper is to encourage the
U.S. Census Bureau to consider ways to improve the usability of the 1-year ACS PPH estimates. 相似文献
208.
209.
We investigate how choices for uncertain gain and loss prospects are affected by the decision maker’s perceived level of knowledge
about the underlying domain of uncertainty. Specifically, we test whether Heath and Tversky’s (J Risk Uncertain 4:5–28, 1991) competence hypothesis extends from gains to losses. We predict that the commonly-observed preference for high knowledge
over low knowledge prospects for gains reverses for losses. We employ an empirical setup in which participants make hypothetical
choices between gain or loss prospects in which the outcome depends on whether a high or low knowledge event occurs. We infer
decision weighting functions for high and low knowledge events from choices using a representative agent preference model.
For gains, we replicate the results of Kilka and Weber (Manage Sci 47:1712–1726, 2001), finding that decision makers are more attracted to choices that they feel more knowledgeable about. However, for losses,
we find limited support for our extension of the competence effect. 相似文献
210.
Bill George 《经理人》2008,(10):76-77
高超的工作技能、先进的管理理念、精准的信息传达,以及明智的策略选择——所有这些特点,在我们的老板、下属和同事身上都屡见不鲜。要成为一名好的领导,光有技能和理念是远远不够的。那么,到底还需要些什么呢? 相似文献