全文获取类型
收费全文 | 26938篇 |
免费 | 491篇 |
国内免费 | 1篇 |
专业分类
管理学 | 3802篇 |
民族学 | 184篇 |
人才学 | 4篇 |
人口学 | 3791篇 |
丛书文集 | 84篇 |
理论方法论 | 2106篇 |
综合类 | 447篇 |
社会学 | 12215篇 |
统计学 | 4797篇 |
出版年
2023年 | 107篇 |
2022年 | 91篇 |
2021年 | 119篇 |
2020年 | 281篇 |
2019年 | 408篇 |
2018年 | 2075篇 |
2017年 | 2238篇 |
2016年 | 1551篇 |
2015年 | 426篇 |
2014年 | 509篇 |
2013年 | 3058篇 |
2012年 | 964篇 |
2011年 | 1536篇 |
2010年 | 1451篇 |
2009年 | 1122篇 |
2008年 | 1191篇 |
2007年 | 1373篇 |
2006年 | 446篇 |
2005年 | 609篇 |
2004年 | 571篇 |
2003年 | 520篇 |
2002年 | 438篇 |
2001年 | 462篇 |
2000年 | 410篇 |
1999年 | 347篇 |
1998年 | 259篇 |
1997年 | 245篇 |
1996年 | 314篇 |
1995年 | 235篇 |
1994年 | 248篇 |
1993年 | 224篇 |
1992年 | 243篇 |
1991年 | 257篇 |
1990年 | 240篇 |
1989年 | 212篇 |
1988年 | 240篇 |
1987年 | 214篇 |
1986年 | 166篇 |
1985年 | 215篇 |
1984年 | 219篇 |
1983年 | 181篇 |
1982年 | 158篇 |
1981年 | 127篇 |
1980年 | 130篇 |
1979年 | 154篇 |
1978年 | 110篇 |
1977年 | 92篇 |
1976年 | 86篇 |
1975年 | 79篇 |
1974年 | 88篇 |
排序方式: 共有10000条查询结果,搜索用时 672 毫秒
751.
Peter Westphal 《生产规划与管理》2013,24(4-5):347-358
This article proposes a taxonomy of outsourcing decision models. The proposed taxonomy may assist practitioners in their decision-making and researchers in the identification, evaluation and classification of decision models. Further, this article also provides an overview and evaluation of existing outsourcing decision models, and assesses them for their applicability to the outsourcing decision process. In particular, this article finds that the outsourcing decision models proposed in the literature have limitations in their applicability to the outsourcing decision process. 相似文献
752.
Narat Charupat Richard Deaves Travis Derouin Marcelo Klotzle Peter Miu 《Theory and Decision》2013,75(1):17-41
We find suggestive evidence that emotional balance has an impact on probability weighting incremental to demographic controls. Specifically, low negative affectivity (implying high emotional balance) tends to be a characteristic of those whose probability weighting functions exhibit lower curvature and more neutral elevation. In other words, emotional balance seems to push people in the direction of normative expected utility theory. 相似文献
753.
A two-phase approach is used to examine the impact of job scheduling rules and tool selection policies for a dynamic job shop system in a tool-shared, flexible manufacturing environment. The first phase develops a generalized simulation model and analyses 'simple' job scheduling rules and tool selection policies under various operating scenarios. The results from this investigation are then used to develop and analyse various bi-criteria rules in the second phase of this study. The results show that the scheduling rules have the most significant impact on system performance, particularly at high shop load levels. Tool selection policies affect some of the performance measures, most notably, proportion of tardy jobs, to a lesser degree. Higher machine utilizations can be obtained at higher tool duplication levels but at the expense of increased tooling costs and lower tool utilization. The results also show that using different processing time distributions may have a significant impact on shop performance. 相似文献
754.
Neoclassical economic and sociological views of discrimination are compared. We summarize economic models of taste, statistical, error, and monopolistic discrimination. Economists argue that competitive market forces should lead to the demise of discrimination in the long run. After explaining these arguments, we present sociological arguments about institutional and social‐psychological mechanisms that promote the persistence of discrimination. A typology of social‐psychological feedback effects from discrimination is presented. We conclude that it is important to recognize forces promoting both the erosion and persistence of discrimination and that this requires a perspective drawing upon both sociology and economics. 相似文献
755.
Dr. Heinrich H. Förster CFA Dipl.-Kfm. Stefan Stöckl Henner Brenken M.Sc. 《Zeitschrift für Betriebswirtschaft》2009,79(9):985-1018
The German Corporate Tax Reform Act of 2008 requires an adjustment of classic valuation concepts because it limits interest deduction from taxable income depending on the operating performance of the company. By using time- and state-contingent discount rates in a risk-neutral valuation with predetermined debt levels, a theoretically sound valuation result is obtained. However, a modified APV-concept which assumes deterministic debt over the planning horizon and constant leverage in the terminal value phase also yields consistent valuation results when two types of tax shields with different levels of risk are distinguished. 相似文献
756.
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
757.
758.
This paper proposes a functional connectivity approach, inspired by brain imaging literature, to model cross-sectional dependence.
Using a varying parameter framework, the model allows correlation patterns to arise from complex economic or social relations
rather than being simply functions of economic or geographic distances between locations. It nests the conventional spatial
and factor model approaches as special cases. A Bayesian Markov Chain Monte Carlo method implements this approach. A small
scale Monte Carlo study is conducted to evaluate the performance of this approach in finite samples, which outperforms both
a spatial model and a factor model. We apply the functional connectivity approach to estimate a hedonic housing price model
for Paris using housing transactions over the period 1990–2003. It allows us to get more information about complex spatial
connections and appears more suitable to capture the cross-sectional dependence than the conventional methods. 相似文献
759.
We describe a first experiment on whether product complexity affects competition and consumers in retail markets. We are unable
to detect a significant effect of product complexity on prices, except insofar as the demand elasticity for complex products
is higher. However, there is qualified evidence that complex products have the potential to induce consumers to buy more than
they would otherwise. In this sense, consumer exploitability in quantities cannot be ruled out. We also find evidence for
shaping effects: consumers’ preferences are shaped by past experience with prices, and firms may in principle exploit this
to sell more. 相似文献
760.
A Diamond-Stiglitz approach to the demand for self-protection 总被引:1,自引:0,他引:1
The existing research concerning the relationship between risk aversion and prudence and the demand for self-protection assumes
that the loss variable follows a Bernoulli distribution, and that changes in the level of self-protection are mean preserving.
The analysis here replaces these two very strong conditions with ones which are more general. When doing this, the method
of analysis is also significantly modified. This modification includes representing a change in the level of self-protection
using the procedure developed by Diamond and Stiglitz (Journal of Economic Theory 8:337-360, 1974) for representing a change in risk. This alternate representation allows the existing findings to be generalized considerably,
and also simplifies the analysis. 相似文献