全文获取类型
收费全文 | 176篇 |
免费 | 4篇 |
专业分类
管理学 | 30篇 |
民族学 | 2篇 |
人口学 | 9篇 |
理论方法论 | 6篇 |
综合类 | 2篇 |
社会学 | 57篇 |
统计学 | 74篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 9篇 |
2019年 | 4篇 |
2018年 | 13篇 |
2017年 | 18篇 |
2016年 | 15篇 |
2015年 | 5篇 |
2014年 | 10篇 |
2013年 | 55篇 |
2012年 | 1篇 |
2011年 | 1篇 |
2010年 | 3篇 |
2009年 | 9篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2005年 | 1篇 |
2004年 | 1篇 |
2001年 | 1篇 |
1998年 | 1篇 |
1992年 | 3篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有180条查询结果,搜索用时 15 毫秒
101.
Katarzyna Filar-Mierzwa Małgorzata Długosz Anna Marchewka Zbigniew Dąbrowski Anna Poznańska 《Journal of women & aging》2017,29(4):348-355
Dance therapy is a physical activity that can lead to balance improvement in older adults. The aim of the study was to evaluate the effects of dance therapy on balance and risk of falls in older women. Twenty-four older women (mean age 66.4 years old) attended dance sessions for three months. Pretest/posttests were completed using the Postural Stability Test, the Limits of Stability Test, and the Fall Risk Test M-CTSIB. Results showed the Limits of Stability Test was significantly higher (17.5%) after dance classes. Regular use of dance therapy shows promise in improving balance by increasing the limits of stability. 相似文献
102.
Coordinated replenishment strategies may be implemented by jointly ordering multiple items from a common supplier. A major benefit of coordinated replenishment is that it increases the size of shipments, permitting the buyer to enjoy transportation economies without a major increase in average inventory levels. The coordinated replenishment problem is complex because side constraints govern the attainment of transportation rate breaks. The problem is further complicated by the presence of purchase quantity discount opportunities. Thus, the buyer must decide which items to order independently, which items to include in a group order, and the order quantities of each item, governed by the frequency of independent or group orders. We present a mathematical model and a heuristic solution procedure that provide analytical support to the buyer seeking to minimize total costs of replenishing multiple items from a common supplier. The relevant costs are purchase prices, ordering costs, holding costs, and transportation costs. Coordinated replenishment provides nearly a 30 percent reduction in controllable costs relative to independent control. Experimentation with the heuristic has yielded optimal solutions over 88 percent of the time. When optimality was not obtained, the mean penalty was much less than one percent. The average heuristic search was more than two orders of magnitude faster than branch and bound, even for small problems, and possessed a much tighter distribution around the mean search time. 相似文献
103.
The authors define the scaled empirical point process. They obtain the weak limit of these point processes through a novel use of a dimension‐free method based on the convergence of compensators of multiparameter martingales. The method extends previous results in several directions. They obtain limits at points where the density may be zero, but has regular variation. The joint limit of the empirical process evaluated at distinct points is given by independent Poisson processes. They provide applications both to nearest‐neighbour density estimation in high dimensions, and to the asymptotic behaviour of multivariate extremes such as those arising from bivariate normal copulas. The Canadian Journal of Statistics 37: 347–360; 2009 © 2009 Statistical Society of Canada 相似文献
104.
105.
Michał Luczewski Izabella Bukraba-Rylska 《?sterreichische Zeitschrift für Soziologie》2008,33(1):89-104
Monographs of local communities are a genre of sociological craft which — along with analyses of personal documents — became a distinguishing mark of Polish empirical sociology. In 2003 turned exactly 100 years from publication of the first sociologically mature village monograph in Poland, e. g. “?mi?ca. Wie? powiatu limanowskiego. Stosunki gospodarcze i spo?eczne” [?mi?ca. A village of the Limanowa county. Economic and social relations] by one of the founding fathers of Polish social sciences, Franciszek Bujak. This paper describes and analyses the impacts of this study and develops a typology of monographs. Additionally, problems of representativeness of monographs are discussed. 相似文献
106.
This paper discusses method for constructing the prediction intervals for time series model with trend using the sieve bootstrap procedure. Gasser–Müller type of kernel estimator is used for trend estimation and prediction. The boundary modification of the kernel is applied to control the edge effect and to construct the predictor of a trend. 相似文献
107.
Koczkodaj Waldemar W. Mazurek Mirosław Strzałka Dominik Wolny-Dominiak Alicja Woodbury-Smith Marc 《Social indicators research》2019,141(2):861-871
Social Indicators Research - This study presents compelling social indicators of such magnitude that they cannot be ignored. The statistical evidence shows that data breaches of electronic health... 相似文献
108.
AbstractWe study the almost sure convergence of weighted sums of ratios of independent random variables satisfying some general, mild conditions. The obtained results are applied to exact laws for order statistics. An exact law for independent random variables which are nonidentically distributed is also proved and applied to ratios of adjacent order statistics for a sample of uniformly distributed random variables. 相似文献
109.
Mikołajczak Paweł 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2020,31(3):472-483
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Social enterprises have gained wide recognition as a tool for solving social and environmental problems. They generate new... 相似文献
110.
Paweł Marcin Kozyra 《Statistics》2018,52(1):177-204
We describe a method of determining upper bounds on the variances of linear combinations of the kth records values from i.i.d. sequences, expressed in terms of variances of parent distributions. We also present conditions for which the bounds are sharp, and those for which the respective lower ones are equal to zero. A special attention is paid to the case of the kth record spacings, i.e. the differences of consecutive kth record values. 相似文献