全文获取类型
收费全文 | 36篇 |
免费 | 0篇 |
专业分类
管理学 | 5篇 |
民族学 | 1篇 |
人口学 | 1篇 |
理论方法论 | 8篇 |
综合类 | 3篇 |
社会学 | 12篇 |
统计学 | 6篇 |
出版年
2020年 | 1篇 |
2013年 | 4篇 |
2012年 | 1篇 |
2011年 | 5篇 |
2010年 | 1篇 |
2008年 | 1篇 |
2007年 | 1篇 |
2006年 | 1篇 |
2005年 | 1篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有36条查询结果,搜索用时 234 毫秒
1.
We empirically explore the relevance and efficiency of risk‐taking behavior in tournaments. We use data from the National Basketball Association (NBA) and measure risk‐taking by the fraction of three‐point shots in basketball games. We examine how point differences between teams during games affect their subsequent risk‐taking behavior. It is found that teams that are trailing are more likely to increase their use of three‐point shots. We additionally analyze the consequences of this change in behavior. Enhanced risk‐taking is inefficient in the vast majority of cases and is only beneficial if a team is trailing by a rather large margin. We discuss possible explanations for these decision errors. (JEL M5, D81, J30) 相似文献
2.
Summary An assessment framework based on nine course objectives is described.Each course objective has related placement objectives whichbecome increasingly demanding as the course progresses. Studentson placement are required to produce written tasks to show howthey have applied their understanding of each placement objectivein their practical work. It is suggested that this framework improves the comparabilityof placements and the availability of evidence for pass/faildecisions. The framework provides a syllabus for learning oneach placement. 相似文献
3.
4.
5.
Abstract. In this paper, two non‐parametric estimators are proposed for estimating the components of an additive quantile regression model. The first estimator is a computationally convenient approach which can be viewed as a more viable alternative to existing kernel‐based approaches. The second estimator involves sequential fitting by univariate local polynomial quantile regressions for each additive component with the other additive components replaced by the corresponding estimates from the first estimator. The purpose of the extra local averaging is to reduce the variance of the first estimator. We show that the second estimator achieves oracle efficiency in the sense that each estimated additive component has the same variance as in the case when all other additive components were known. Asymptotic properties are derived for both estimators under dependent processes that are strictly stationary and absolutely regular. We also provide a demonstrative empirical application of additive quantile models to ambulance travel times. 相似文献
6.
Abstract. The last decade methods for quantifying the research output of individual researchers have become quite popular in academic policy making. The h‐index (or Hirsch index) constitutes an interesting combined bibliometric volume/impact indicator that has attracted a lot of attention recently. It is now a common indicator, available for instance on the Web of Science. In this article, we establish the asymptotic normality of the empirical h‐index. The rate of convergence is non‐standard: , where f is the density of the citation distribution and n is the number of publications of a researcher. In case that the citations follow a Pareto‐type respectively a Weibull‐type distribution as defined in extreme value theory, our general result specializes well to results that are useful for practical purposes such as the construction of confidence intervals and pairwise comparisons for the h‐index. A simulation study for the Pareto‐type case shows that the asymptotic theory works well for moderate sample sizes already. 相似文献
7.
Biography and autobiography have been used in numerous ways to represent people with learning difficulties. In this paper we review a variety of approaches to biography and autobiography with people with learning difficulties, and discuss the roles researchers play. The paper ends with a discussion of the potential of autobiography as a means to change the power relationships in disability research. 相似文献
8.
Abstract. We propose and study a class of regression models, in which the mean function is specified parametrically as in the existing regression methods, but the residual distribution is modelled non-parametrically by a kernel estimator, without imposing any assumption on its distribution. This specification is different from the existing semiparametric regression models. The asymptotic properties of such likelihood and the maximum likelihood estimate (MLE) under this semiparametric model are studied. We show that under some regularity conditions, the MLE under this model is consistent (when compared with the possibly pseudo-consistency of the parameter estimation under the existing parametric regression model), is asymptotically normal with rate and efficient. The non-parametric pseudo-likelihood ratio has the Wilks property as the true likelihood ratio does. Simulated examples are presented to evaluate the accuracy of the proposed semiparametric MLE method. 相似文献
9.
Correspondence to Jan Horwath, Department of Sociological Studies, University of Sheffield, Elmfield, Northumberland Road, Sheffield S10 2TU, UK. Summary Child protection guidance at a national level has predominantlyfocused on the investigation and assessment of child abuse andneglect. Post-registration practice has received little attention,resulting in a variety of local responses. This paper describesthe findings from a national study designed to identify theimpact of the lack of national guidance on local post-registrationframeworks for practice. Data collected indicate that very fewArea Child Protection Committees (ACPCs) have developed policies,procedures or practice guidance which would provide a structurefor post-registration practice. This position is aggravatedfurther as individual professionals are confused about theirown roles and responsibilities and those of colleagues. We considerthe impact of these findings on practice and conclude by suggestinga macro level framework that can be utilized by ACPCs who wishto develop practice in this area. 相似文献
10.
CC Gallagher 《Omega》1977,5(6):731-739
This paper discusses how technological innovation takes place in manufacturing industry, and especially in the engineering sector, contrasting in particular the effects of the Western market economy, and the East European planned economy. The relative lack of cross-influence between formal scientific research and actual industrial innovation practice in this area is first discussed. Comparative studies of engineering practice in planned and market economies are described which point to the important influence of the economic environment on innovation practice in the factory's design office, and on the shop-floor. The East European Soviet Type Economy is seen to have features which in the light of recent Western empirical studies into industrial innovation, must hamper this process. In particular it is proposed that its relative economic and social rigidity has an important restricting influence on the actual process of innovation in the factory. 相似文献