全文获取类型
收费全文 | 3072篇 |
免费 | 114篇 |
专业分类
管理学 | 483篇 |
民族学 | 24篇 |
人才学 | 1篇 |
人口学 | 270篇 |
丛书文集 | 27篇 |
理论方法论 | 317篇 |
综合类 | 33篇 |
社会学 | 1617篇 |
统计学 | 414篇 |
出版年
2023年 | 23篇 |
2022年 | 18篇 |
2021年 | 30篇 |
2020年 | 72篇 |
2019年 | 78篇 |
2018年 | 92篇 |
2017年 | 130篇 |
2016年 | 116篇 |
2015年 | 84篇 |
2014年 | 95篇 |
2013年 | 464篇 |
2012年 | 126篇 |
2011年 | 112篇 |
2010年 | 75篇 |
2009年 | 96篇 |
2008年 | 90篇 |
2007年 | 77篇 |
2006年 | 83篇 |
2005年 | 99篇 |
2004年 | 97篇 |
2003年 | 86篇 |
2002年 | 86篇 |
2001年 | 86篇 |
2000年 | 70篇 |
1999年 | 51篇 |
1998年 | 38篇 |
1997年 | 34篇 |
1996年 | 48篇 |
1995年 | 38篇 |
1994年 | 35篇 |
1993年 | 55篇 |
1992年 | 40篇 |
1991年 | 36篇 |
1990年 | 27篇 |
1989年 | 23篇 |
1988年 | 26篇 |
1987年 | 25篇 |
1986年 | 23篇 |
1985年 | 22篇 |
1984年 | 32篇 |
1983年 | 24篇 |
1982年 | 29篇 |
1981年 | 20篇 |
1980年 | 20篇 |
1979年 | 23篇 |
1978年 | 13篇 |
1977年 | 22篇 |
1975年 | 21篇 |
1974年 | 19篇 |
1973年 | 12篇 |
排序方式: 共有3186条查询结果,搜索用时 241 毫秒
801.
802.
In this article, we propose a four-parameter asymmetric doubly Pareto-uniform (DPU) distribution with support (?∞, ∞) whose density and cumulative distribution functions are constructed by seamlessly concatenating the left and right Pareto tails with a uniform central part. Properties of the distribution are described and a maximum likelihood estimation (MLE) procedure for its parameters is obtained. Two illustrative examples of the MLE procedure are provided. The first example utilizes an i.i.d. sample of standardized log-differences of bi-monthly 30-year U.S. conventional mortgage interest rates (1971–2004). The second example deals with the height of 100 female Australian athletes. 相似文献
803.
Nattaporn Tanasornnarong Alun Jackson Shane Thomas 《International Gambling Studies》2013,13(2):189-203
The purpose of the study reported in this paper was to explore the gambling behaviours of young Thai people resident in Melbourne, Australia; the meaning that gambling had for this group; whether the attitudes of these young Thai people towards gambling changed as a result of their location in a society with more relaxed attitudes towards gambling than in Thailand; whether any such changes of attitude were reflected in gambling participation; and whether such participation had demonstrably negative impacts. It was also hoped to gain some insight into whether pre-existing beliefs and attitudes provided a protective factor in relation to the respondent's gambling. Fifty young people aged 18 to 25, forming five natural friendship networks, were observed on over 180 occasions in relation to their gambling and leisure behaviours. A number of major themes were identified from the observational data including money, fortune and luck, consumerism, entertainment, spirituality and superstition, gambling and family values. It was found that despite high levels of gambling participation there was little, if any, evidence of problematic play or its consequences. Strong adherence to values espoused in families of origin and to complex beliefs about luck in the context of beliefs about spirituality and the location of gambling within the context of a range of leisure pursuits served as protective factors for these young people. 相似文献
804.
A method is described for determining the sample size required for a specified precision simultaneous confidence statement about the parameters of a multinomial population. The method is based on a simultaneous confidence interval procedure due to Goodman, and the results are compared with those obtained by separately considering each cell of the multinomial population as a binomial. 相似文献
805.
Thomas G. Eynon 《Sociological focus》2013,46(1):1-18
Abstract Category/continuum thinking is measured and the effects of dissonance between thought styles and response formats on the ability to predict behavior from measured attitude are investigated. Dissonance is found to have a substantial effect which is attributable primarily to distortions produced when females who tend toward continuum thinking are forced to respond in categories. Contrary to usual practice, continuum formats are found to be generally more adequate than category formats. The implications of the conclusions for theory and research are discussed. 相似文献
806.
Thomas W. L. Norman 《Theory and Decision》2010,69(2):167-182
Mixed-strategy equilibria are typically rather unstable in evolutionary game theory. “Monocyclic” games, such as Rock–Paper–Scissors,
have only mixed equilibria, some of which are “stable” in the sense that sequential best replies lead to them; yet, even these
games are prone to stable cycles under discrete-time simultaneous best replies, giving an unusual equilibrium-selection problem.
This article analyzes such games in a random-utility setting where changing strategies is costly, and the speed of the dynamic
is, thus, endogenous. The stochastically stable outcome is determined by the cost of switching strategies; when switching
costs are high, mixed equilibria are selected, whereas when switching costs are low, cycles are selected. 相似文献
807.
Thomas Pegelow Kaplan 《Social history》2013,38(2):254-255
808.
809.
Kerstin Schmidt Thomas Volling Thomas S. Spengler 《Zeitschrift für Betriebswirtschaft》2014,84(5):665-714
In distributed product development processes system integrators collaborate with suppliers to provide marketable products. We analyze contract structures in their ability to coordinate such processes. A converging supply chain with two suppliers and one system integrator is considered. Each supplier develops one component and faces uncertainty with regard to development results. For the system integrator the specifications of both components are substitutive in terms of the specification of the final product (e.g., recycling quotas). Depending on the resulting specification of the final product, the system integrator generates revenues under a maximum price clause. We apply a game-theoretic framework: the system integrator is the Stackelberg leader and the suppliers are Stackelberg followers. Assuming uniformly distributed development results, we analyze two typical development contracts: a wholesale price contract and a penalty contract. We present numerical illustrations of centralized and decentralized solutions to gain qualitative insights about the optimal decisions and the coordination ability of the two contracts. Accordingly, both contracts coordinate the supply chain only under forced compliance. 相似文献
810.
Laurie Drabble Sue Thomas Lisa O’Connor Sarah C. M. Roberts 《Journal of social work practice in the addictions》2014,14(2):191-206
This article describes U.S. state policies related to alcohol use during pregnancy, using data from the National Institute on Alcohol Abuse and Alcoholism Alcohol Policy Information System. Specifically, this study examines trends in policies enacted by states over time and types of policies enacted across states in the United States, with a focus on whether laws were supportive or punitive toward women. Findings revealed substantial variability in characteristics of policies (19 primarily supportive, 12 primarily punitive, 12 with a mixed approach, and 8 with no policies). Findings underscore the need to examine possible consequences of policies, especially of punitive policies and “mixed” approaches. 相似文献