全文获取类型
收费全文 | 198篇 |
免费 | 6篇 |
专业分类
管理学 | 29篇 |
民族学 | 2篇 |
人口学 | 21篇 |
丛书文集 | 29篇 |
理论方法论 | 16篇 |
综合类 | 16篇 |
社会学 | 65篇 |
统计学 | 26篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 1篇 |
2020年 | 6篇 |
2019年 | 6篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 7篇 |
2015年 | 6篇 |
2014年 | 5篇 |
2013年 | 29篇 |
2012年 | 12篇 |
2011年 | 32篇 |
2010年 | 4篇 |
2009年 | 4篇 |
2008年 | 10篇 |
2007年 | 7篇 |
2006年 | 6篇 |
2005年 | 10篇 |
2004年 | 5篇 |
2003年 | 4篇 |
2002年 | 2篇 |
2001年 | 7篇 |
2000年 | 4篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有204条查询结果,搜索用时 750 毫秒
71.
Krishna B. Athreya Malay Ghosh Leone Y. Low Pranab K. Sen 《Journal of statistical planning and inference》1984,9(2):185-194
For the bootstrapped mean, a strong law of large numbers is obtained under the assumption of finiteness of the rth moment, for some r>1, and a weak law of large numbers is obtained under the finiteness of the first moment. The results are then extended to bootstrapped U-statistics under parallel conditions. Stochastic convergence of the jackknifed estimator of the variance of a bootstrapped U-statistic is proved. The asymptotic normality of the bootstrapped pivot and the bias of the bootstrapped U-statistic are indicated. 相似文献
72.
Workers with disabilities are entitled to have their individual needs accommodated in a way that allows them to perform the essential duties of their job. However, adults with disabilities are often lacking in career development and are ill-prepared to negotiate workplace accommodations. This has led educators to seek workplaces that can accommodate the needs of adolescents with disabilities, so these adolescents can learn to negotiate accommodations and enhance their career development through work-based education. This paper reports on two case studies in which employers had agreed to accommodate the needs of adolescents with disabilities participating in work-based education. Social Cognitive Career Theory (SCCT) framed the analyses of these two cases - a case of a student with physical disabilities and a case of a student with developmental disabilities. SCCT proves valuable in understanding the role of work-based education in the career development of disabled youth. 相似文献
73.
Introduction.?Erectile dysfunction (ED) is a common medical disorder affecting the aging male. A man's perception of a disease affects his health seeking behaviour. This study aimed to explore perceptions of ED among men with ED and how these perceptions came about.Methods.?This qualitative study utilized in-depth interviews involving 17 urban men aged between 40 and 75 years old.Results.?Misconceptions existed regarding the definitions of ED. Most men perceived impotence to be more serious than ED. Although most were aware of the medical causes of ED, ‘overuse of penis’ and black magic were mentioned as culturally-related causes. ED was perceived as a serious problem associated with loss of manhood and it had a significant impact on relationships with their partners. However, some adopted an ‘accepting’ view and attributed it to aging and fate. Most men were only familiar with PDE-5 inhibitors and traditional therapies. PDE-5 inhibitors were perceived to be effective but they were concerned about side effects and costs.Conclusions.?Identifying men's perceptions of ED and its treatment would help doctors in their consultation, and inform health policy makers in planning appropriate public education and services. 相似文献
74.
A qualitative study of older women living in their own homes and older women living in aged care facilities found that the concerns of the women living in their own homes were the realities of life for the residents in the aged care facilities. Twenty-five female residents across two facilities and 11 older women living in their own homes were interviewed. The positive outcomes of aging at home are relevant and desirable for residents of aged care facilities. A smooth transition from community living to residential aged care involves retaining some of these positive aspects of their lives. 相似文献
75.
Yong Zhang Joseph Wun-Tat Chan Francis Y. L. Chin Hing-Fung Ting Deshi Ye Feng Zhang Jianyu Shi 《Journal of Combinatorial Optimization》2016,31(1):79-94
This paper considers the minimax regret vertex 2-sink location problem in a dynamic path network with positive edge lengths and uniform edge capacity. Let \(P\) be an undirected path graph of \(n\) vertices, and the weight (initial supply) of every vertex is known as an interval. The problem is to find two vertices \(x\) and \(y\) as two sinks on the path such that all the weights can evacuate to \(x\) and \(y\) with minimum regret of evacuation time in case of an emergency for any possible weight distribution. We present an \(O(n^3\log n)\) time algorithm. 相似文献
76.
Yong Zhang Francis Y. L. Chin Hing-Fung Ting Xin Han 《Journal of Combinatorial Optimization》2013,26(2):223-236
In this paper, we study 1-space bounded multi-dimensional bin packing and hypercube packing. A sequence of items arrive over time, each item is a d-dimensional hyperbox (in bin packing) or hypercube (in hypercube packing), and the length of each side is no more than 1. These items must be packed without overlapping into d-dimensional hypercubes with unit length on each side. In d-dimensional space, any two dimensions i and j define a space P ij . When an item arrives, we must pack it into an active bin immediately without any knowledge of the future items, and 90°-rotation on any plane P ij is allowed. The objective is to minimize the total number of bins used for packing all these items in the sequence. In the 1-space bounded variant, there is only one active bin for packing the current item. If the active bin does not have enough space to pack the item, it must be closed and a new active bin is opened. For d-dimensional bin packing, an online algorithm with competitive ratio 4 d is given. Moreover, we consider d-dimensional hypercube packing, and give a 2 d+1-competitive algorithm. These two results are the first study on 1-space bounded multi dimensional bin packing and hypercube packing. 相似文献
77.
The negative impact of incorrect requirements on information system development (ISD) project performance has long been acknowledged. This study addresses the problem of incorrect requirements by proposing a model that combines the error reduction and coping concepts proposed by Field, Ritzman, Safizadeh, and Downing (2006) with the view that ISD is a knowledge‐intensive process. The model hypothesizes that when developers and users possess an understanding of each other's primary domain of knowledge, the prevention of incorrect requirements and the mitigation of the negative consequences of incorrect requirements tend to improve project performance. Data collected from 250 ISD professionals on the basis of their experiences of recently completed ISD projects confirmed all of our hypotheses. The results demonstrate that the eliciting of incorrect requirements can be reduced when users and developers possess cross‐domain understanding and when requirement analysis methodologies and techniques are available. Furthermore, the negative impact of incorrect requirements on project performance can be mitigated when developers have sufficient ISD knowledge and behavioral knowledge. 相似文献
78.
Chin Long Chiang 《统计学通讯:理论与方法》2013,42(5-6):905-921
This article was written for a keynote speech to present a few highlights of my life as a statistician. It has seven sections beginning with an introduction in Section 17 some prospects of biostatistics in Section 2, and a tribute to J. Neyman in Section 3. In Section 4 is a sample of my work including motivation for my studies on the life table and competing risks, contributions and comments in survival analyses, a solution for Kolmogorov differential equations, and an explicit formula for the n-step transition probability in discrete time Markov chains. 相似文献
79.
The field of the history of Japanese science is at a crossroads. By working with STS scholars, promoting interaction with
the Asian region and beyond, the field can be reinvigorated. This paper outlines the current situation and identifies key
institutions and players who will lead the field into the twenty-first century. 相似文献
80.
对某些学者而言,马来班顿体也许是马来世界和马来灵魂的完美镜像。班顿体是一种口头文学,它扎根于许多不同的族群中,通过口头方式代代相传。本文的研究焦点是马来和马来西亚土生华人班顿体,其中有些文本直接录自马六甲和新加坡的口述者,分析的重点是马来班顿体首联中对自然的偏爱是如何在土生华人班顿体中得到强调的。此外,强调自然比兴的这种手法是马来班顿体和土生华人班顿体冲突后产生的“镜像效应”。这两种班顿体中反复出现的自然景象强调了当时与之紧密相关的日常生活,同时也形成了班顿体独特的审美性。 相似文献