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91.
92.
Tang & Barnett (1996) present some techniques for monitoring and controlling the dispersion of multivariate normal processes based on subgroup data. The current paper compares the proposed techniques and various competing procedures. Simulation results indicate that the proposed techniques are superior to existing procedures. 相似文献
93.
We consider some estimators of the total and variance of a finite population from Bayesian and pseudo-Bayesian perspectives. Recently, Meeden and Ghosh (1982a, 1982b) have provided quite simple but powerful tools for proving admissibility of estimators and estimator-design pairs is finite population sampling problems. We consider what these techniques yield in the way of admissibility results for the estimators discussed. 相似文献
94.
This article examines recent progress at assigning monetary values to what are normally considered “hard to quantify” benefits of transportation projects. It focuses on three types of impacts – environmental quality, health and wider economic impacts – to examine how transportation project evaluation methods have evolved in recent years and how they compare to methods used for evaluation of non-transportation programs. Examples of recent practice are provided to show how transport agencies are continuing to refine performance measures to include broader impacts in project evaluation. A classification is provided to distinguish direct traveler effects from indirect effects on non-travelers, a step important to maximize coverage and minimize double-counting of impacts. For each type of impact, the paper discusses the range of variation in monetized values and shows that the variation is due less to imprecision in measurement than to fundamental issues about whether to use damage compensation, impact avoidance costs, stated preferences or behavioral valuation perspectives to define those values. Case studies as diverse as Australian roads, Wisconsin energy programs and Appalachian economic development programs are used to show how common methods are evolving among transport and non-transport agencies to improve impact measurement and its use in project evaluation. 相似文献
95.
Melissa D. Barnett Gerhard Sonnert Philip M. Sadler 《The International migration review》2012,46(4):891-918
This article investigates the impact of immigrant generation on students performance in college calculus courses and examines the extent to which the observed patterns corroborate or contradict various assimilation theories. It goes beyond past studies of the relationship between immigrant generation and mathematics achievement that focused primarily on middle and high school students and typically excluded foreign students. Our principal finding is that foreign students and the 1.25 generation earned the highest grades, on average, even after controlling for race/ethnicity and socioeconomic status. Our findings provide partial support for the immigrant advantage theory. 相似文献
96.
The general audience for a global crisis can become a grassroots force in the ultimate fate of policy decisions. Focusing on the North Korean nuclear crisis case, certain contingent factors (dominant coalition characteristics, external threat, and external public characteristics) were overall strong predictors for public estimation about the government stance. Further, perception of situational factors (external threat and external public characteristics) was a stronger predictor for the participants’ stance estimation than perception of predisposing factors (dominant coalition characteristics). Implications for international diplomacy were discussed. 相似文献
97.
Brian A. Primack MD PhD Kevin H. Kim PhD Ariel Shensa MA Jaime E. Sidani PhD Tracey E. Barnett PhD Galen E. Switzer PhD 《Journal of American college health : J of ACH》2013,61(5):374-386
Abstract Objective: Segmentation of populations may facilitate development of targeted substance abuse prevention programs. The authors aimed to partition a national sample of university students according to profiles based on substance use. Participants: The authors used 2008–2009 data from the National College Health Assessment from the American College Health Association. The sample consisted of 111,245 individuals from 158 institutions. Methods: The sample was partitioned using cluster analysis according to current substance use behaviors. The association of cluster membership with individual and institutional characteristics was examined. Results: Cluster analysis yielded 6 distinct clusters. Three individual factors—gender, year in school, and fraternity/sorority membership—were the most strongly associated with cluster membership. Conclusions: In a large sample of university students, the authors were able to identify 6 distinct patterns of substance abuse. It may be valuable to target specific populations of college-aged substance users based on individual factors. However, comprehensive intervention will require a multifaceted approach. 相似文献
98.
Vic Barnett 《统计学通讯:理论与方法》2013,42(7):2109-2118
Outliers are to be found among the extremes of a data set. Extremes are examples of order statistics. It is thus relevant to ask to what extent the statistical methods (and probabilistic properties) of outliers and of order statistics coincide and depend on each other. Whilst clear overlap is identifiable, aims and procedures are often quite distinct and each topic plays its own important role in the panoply of statistical principles and methodology. 相似文献
99.
The paper indicates using community development and sustainable livelihood theories as lenses that well-being indicators vary
among societies, especially in developing countries due cultural differences. The study which was carried in three rural communities
in Ho Municipality in the Ghana was to show the extent to which men’s and women’s sense of well-being were determined by their
local economic, religious, social, and education indicators; all of which were driven by their cultural values. Since men
and women placed different values on religious, social, economic, education indicators, the paper discusses that their importance
to overall well-being also differs between men and women. 相似文献
100.
Barbara Barnett 《Feminist Media Studies》2013,13(3):505-524
Scholars suggest we construct stories or narratives to help us create order and rationalize events that are difficult to explain. In contemporary society, journalists serve as mediated storytellers, and one story journalists have told from the perspective of sense-making is that of mothers who kill their children, a crime that can defy understanding. This qualitative textual analysis examines ten cases of maternal infanticide to determine the collective narrative told by journalists, exploring the dialectical and rhetorical functions of narrative. The analysis reveals that the news narrative offers moral lessons about the consequences of maternal incompetence and “inappropriate” feminine sexual behavior. The author questions whether the journalistic paradigm of detachment—traditionally associated with a masculine narrative style—is the best way to tell stories of women's lives and suggests feminist research practices can be used to capture the complexities of mothering work, as well as other complicated situations in women's and men's lives. 相似文献