全文获取类型
收费全文 | 259篇 |
免费 | 5篇 |
专业分类
管理学 | 31篇 |
民族学 | 9篇 |
人口学 | 31篇 |
理论方法论 | 18篇 |
综合类 | 1篇 |
社会学 | 48篇 |
统计学 | 126篇 |
出版年
2023年 | 4篇 |
2022年 | 5篇 |
2021年 | 12篇 |
2020年 | 23篇 |
2019年 | 29篇 |
2018年 | 24篇 |
2017年 | 34篇 |
2016年 | 20篇 |
2015年 | 6篇 |
2014年 | 7篇 |
2013年 | 48篇 |
2012年 | 3篇 |
2011年 | 8篇 |
2010年 | 11篇 |
2009年 | 4篇 |
2008年 | 5篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2004年 | 3篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2000年 | 2篇 |
1997年 | 2篇 |
1992年 | 2篇 |
1990年 | 3篇 |
1989年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有264条查询结果,搜索用时 46 毫秒
81.
82.
In a general flow-shop situation, where all the jobs must pass through all the machines in the same order, certain heuristic algorithms propose that the jobs with higher total process time should be given higher priority than the jobs with less total process time. Based on this premise, a simple algorithm is presented in this paper, which produces very good sequences in comparison with existing heuristics. The results of the proposed algorithm have been compared with the results from 15 other algorithms in an independent study by Park [13], who shows that the proposed algorithm performs especially well on large flow-shop problems in both the static and dynamic sequencing environments. 相似文献
83.
Money Matters: Young Adults’ Perception of the Economic Consequences of their Parents’ Divorce 总被引:3,自引:3,他引:0
Dorit Eldar-Avidan Muhammad M. Haj-Yahia Charles W. Greenbaum 《Journal of Family and Economic Issues》2008,29(1):74-85
A qualitative study examined the perceptions of 22 Israeli young adults (ages 20–25) of childhood parental divorce. Respondents
discussed their experiences, including economic consequences of the divorce. Results related to the practical aspect of economic
decline, to economic issues as embodiment of parental conflicts, and to children’s emotional and practical roles connected
to economic changes. Children’s understanding and coping with financial issues are related to three profiles of overall adjustment
identified in this study—resilience, survival, and vulnerability. Resilient young adults interpreted as empowering their understanding
and coping; the survivors recognized their efforts as meaningful but burdensome; and vulnerable participants felt that economic changes caused a heavy
financial and emotional price. Limitations and implications are discussed.
相似文献
Charles W. GreenbaumEmail: |
84.
Kareem R. Muhammad 《Social Identities》2013,19(5):425-443
As scholars on culture have suggested elsewhere, cooption through consumption by the music culture industry has forced those who want to be part of the hip-hop subculture to go back underground. But to label all of these individuals in the underground merely ‘hip-hop’ would be as equally uninformative as labeling anyone who wears baggy blue jeans and can rhyme words together as being hip-hop. My year of field research in Chicago revealed that five major identities emerged: Professional Headz, Refugee Headz, Hip-Hop Fundamentalists, Black Headz and Tech Headz. These identities were characterized by the personal values that my participants indicated were most reaffirmed through hip-hop culture. This article contributes to the literature on hip-hop by providing an ethnographic study on how the Hip-Hop Nation defines itself, while examining some of the tensions that these identities provide within the Hip-Hop Nation. It also reinforces the view that subculture must still be experienced in the flesh and is not fully experienced by being able to engage in the culture industry of hip-hop through purchasing records, watching videos or buying hip-hop fashions. This article also provides a more complex qualitative understanding of what values constitute being hip-hop and which ones do not. 相似文献
85.
Yuichi Kitamura Andres Santos Azeem M. Shaikh 《Econometrica : journal of the Econometric Society》2012,80(1):413-423
We show by example that empirical likelihood and other commonly used tests for moment restrictions are unable to control the (exponential) rate at which the probability of a Type I error tends to zero unless the possible distributions for the observed data are restricted appropriately. From this, it follows that for the optimality claim for empirical likelihood in Kitamura (2001) to hold, additional assumptions and qualifications are required. Under stronger assumptions than those in Kitamura (2001), we establish the following optimality result: (i) empirical likelihood controls the rate at which the probability of a Type I error tends to zero and (ii) among all procedures for which the probability of a Type I error tends to zero at least as fast, empirical likelihood maximizes the rate at which the probability of a Type II error tends to zero for most alternatives. This result further implies that empirical likelihood maximizes the rate at which the probability of a Type II error tends to zero for all alternatives among a class of tests that satisfy a weaker criterion for their Type I error probabilities. 相似文献
86.
Ayesha Masood Chaudhry Muhammad Bilal 《International migration (Geneva, Switzerland)》2021,59(1):58-73
The dual citizenship has been the subject of intense political debate in Pakistan barring the elected representatives, in parliament, the provincial assemblies and the presidency, from holding dual nationality. The perceptions that holding a foreign citizenship challenges the undiluted loyalty to country further engender question mark over their political participation in country’s affairs. A qualitative study has been carried out in the city of Rawalpindi to explore the stance of Pakistani nationals on such exclusion of Pakistani dual citizens from mainstream politics of Pakistan asking should the individual’s association to the state be an exclusive one? In this paper, in‐depth interviews were conducted with a sample of 40 male and female respondents (22 Pakistani citizens, 18 Pakistani dual citizens) and 6 constitutional experts. The results indicate distrust among Pakistani citizens when considering dual citizens’ right of representation in general elections of Pakistan, stemming from a mistrust of their “split loyalties”. 相似文献
87.
The heteroscedasticity consistent covariance matrix estimators are commonly used for the testing of regression coefficients when error terms of regression model are heteroscedastic. These estimators are based on the residuals obtained from the method of ordinary least squares and this method yields inefficient estimators in the presence of heteroscedasticity. It is usual practice to use estimated weighted least squares method or some adaptive methods to find efficient estimates of the regression parameters when the form of heteroscedasticity is unknown. But HCCM estimators are seldom derived from such efficient estimators for testing purposes in the available literature. The current article addresses the same concern and presents the weighted versions of HCCM estimators. Our numerical work uncovers the performance of these estimators and their finite sample properties in terms of interval estimation and null rejection rate. 相似文献
88.
ABSTRACTIn this paper, a general class of estimators for estimating the finite population variance in successive sampling on two occasions using multi-auxiliary variables has been proposed. The expression of variance has also been derived. Further, it has been shown that the proposed general class of estimators is more efficient than the usual variance estimator and the class of variance estimators proposed by Singh et al. (2011) when we used more than one auxiliary variable. In addition, we support this with the aid of numerical illustration. 相似文献
89.
ABSTRACTWe will design a new mixed acceptance sampling plan based on the exponentially weighted moving average statistic in this article. The plan parameters of the proposed plan are determined by an optimization problem. The efficiency of the proposed plan is compared with the existing attribute sampling plan. An industrial example is given for illustration purpose. 相似文献
90.
Muhammad Nouman Qureshi Sadia Khalil Chang-Tai Chao Muhammad Hanif 《统计学通讯:理论与方法》2013,42(21):5387-5400
AbstractMany researchers used auxiliary information together with survey variable to improve the efficiency of population parameters like mean, variance, total and proportion. Ratio and regression estimation are the most commonly used methods that utilized auxiliary information in different ways to get the maximum benefits in the form of high precision of the estimators. Thompson first introduced the concept of Adaptive cluster sampling, which is an appropriate technique for collecting the samples from rare and clustered populations. In this article, a generalized exponential type estimator is proposed and its properties have been studied for the estimation of rare and highly clustered population variance using single auxiliary information. A numerical study is carried out on a real and artificial population to judge the performance of the proposed estimator over the competing estimators. It is shown that the proposed generalized exponential type estimator is more efficient than the adaptive and non adaptive estimators under conventional sampling design. 相似文献