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71.
Victimization,Aggression, and Other Problem Behaviors: Trajectories of Change Within and Across Middle School Grades 下载免费PDF全文
Albert D. Farrell Elizabeth A. Goncy Terri N. Sullivan Erin L. Thompson 《Journal of research on adolescence》2018,28(2):438-455
This study examined trajectories of victimization and problem behaviors within and across three grades of middle school. Participants were 2,166 adolescents from three urban middle schools in the United States who completed measures of victimization, physical and relational aggression, substance use, and delinquent behavior. Latent curve analyses modeled changes in each construct across 12 waves collected every 3 months. In each case, the best‐fitting model required separate linear slopes to represent changes within each grade and a factor representing decreases in the summers. Positive cross‐construct correlations were found for intercepts, linear slopes, and measures within waves. The findings suggest strong associations among victimization and problem behaviors, and individual differences in their patterns of change both within and across grades. 相似文献
72.
Measurement of Dating Aggression During Middle School: Structure,Measurement Invariance,and Distinction From General Aggression 下载免费PDF全文
Elizabeth A. Goncy Albert D. Farrell Terri N. Sullivan Katherine A. Taylor 《Journal of research on adolescence》2016,26(3):509-523
Two studies examined the factor structure of a modified version of the Safe Dates dating aggression scale and evaluated whether dating aggression is distinct from general aggression during early adolescence. Analyses were conducted on a derivation sample of 3,894 adolescents from 37 schools (Study 1) and an independent cross‐validation sample of 938 middle school youth (Study 2). Categorical confirmatory factor analyses supported a two‐factor model (perpetration and victimization) over models differentiating psychological and physical forms of aggression. The model was invariant across time, sex, grade, and season. Study 2 also supported dating aggression as distinct from general aggression. Results supported measuring dating aggression perpetration and victimization as latent constructs represented by ordered categorical indicators that capture item severity and frequency. 相似文献
73.
Non-parametric Quantile Regression with Censored Data 总被引:1,自引:0,他引:1
ALI GANNOUN JÉRÔME SARACCO AO YUAN GEORGE E. BONNEY 《Scandinavian Journal of Statistics》2005,32(4):527-550
Abstract. Censored regression models have received a great deal of attention in both the theoretical and applied statistics literature. Here, we consider a model in which the response variable is censored but not the covariates. We propose a new estimator of the conditional quantiles based on the local linear method, and give an algorithm for its numerical implementation. We study its asymptotic properties and evaluate its performance on simulated data sets. 相似文献
74.
75.
“Pretty Pressure” From Peers,Parents, and the Media: A Longitudinal Study of Appearance‐Based Rejection Sensitivity 下载免费PDF全文
Haley J. Webb Melanie J. Zimmer‐Gembeck Allison M. Waters Lara J. Farrell Drew Nesdale Geraldine Downey 《Journal of research on adolescence》2017,27(4):718-735
Drawing from the tripartite sociocultural model of body image, the researchers examined whether direct messages and modeling from peers, parents, and media were concurrently and prospectively associated with appearance‐based rejection sensitivity (appearance‐RS) in young adolescents (Mage = 12.0 years). Appearance‐RS was higher among those who concurrently reported more appearance‐related teasing and pressure by peers, more parent teasing, and greater acceptance of media appearance ideals. In prospective analyses, greater increases in appearance‐RS over 1 year were found for adolescents who perceived higher levels of parental appearance‐related teasing and negative attitudes about their own appearance. Moderation analyses indicated the positive prospective association between parental negative appearance attitudes and appearance‐RS was found in younger but not older participants. Gender did not moderate associations. 相似文献
76.
Philip ME Garboden Tama Leventhal Sandra Newman 《Journal of social service research》2017,43(2):246-261
This article reviews the methodological challenges of estimating a causal association between mobility and children's cognitive, social, emotional, and physical development. Utilizing a comprehensive set of empirical articles published in the past 25 years that employ quantitative methods, it describes the limitations of previous studies and the innovative ways that researchers have attempted to deal with them. The concept of mobility is inconsistently operationalized along four dimensions: school versus residential, distance, timing, and frequency. Imprecise operationalization conflates different forms of mobility, which have differential effects on development. Attempts to estimate a causal association between mobility and development suffer from three sources of bias: selection, contextual shifts, and contemporaneous instigating events. (a) Methods that account for unobserved differences between mobile and nonmobile children have consistently shown smaller or even positive effects of mobility. (b) Moving can have a positive or negative effect on children's ecological contexts in ways that are systematically correlated with child development. (c) Moves are frequently catalyzed by changes in family structure and employment. The article concludes with recommendations for future research. Researchers should continue to engage fixed- and random-effect, matching, and instrumental variable techniques, each of which makes the question of causality explicit. 相似文献
77.
78.
Farrell E. Bloch 《Journal of Labor Research》1982,3(1):31-37
Formalized collective bargaining rather than individual employer-employee negotiation is the fundamental characteristic of
a unionized labor market. Formalization involves the substitution of rules for employer discretion. Collectivization substitutes
simultaneous decision making on behalf of all workers in a unit for a set of individual employee decisions. Formalization
and collectivization are present in nonunion as well as union labor markets and their extent varies within as well as between
these two sectors. In particular, individuals may negotiate where they belong in a union environment, and the presence of
rules invites negotiation over their interpretation. Nevertheless, because formalization and collectivization are obvious
concomitants of trade union organization, their costs to both employers and employees should explain the probability of union
organization, as well as the incidence of such antecedents of the modern trade union as the Italian padrone who acted as foreman,
pay-master, and employment agency for newly-arrived immigrants to the United States; and the Indianjamdar, a construction industry recruiter-foreman.
Our occasional observations of union-induced costreductions may appear to counter the implicit assumption in much of the trade union literature that unions always induce suboptimal
combinations of factor inputs and factor payments (nonunion firms could choose union-induced parameters on their own and do
not). Because these cost reductions may be accompanied by increased costs imposed by unions, however, the cost reductions
discussed below imply nothing about overall effects of unions on employers or employees.
I wish to thank John Pencavel for helpful comments on earlier versions of this paper.
For further analysis of these points, see Flanders (1968).
See Epstein and Monat (1973) for a discussion of the services provided by labor contractors. 相似文献
79.
Between 1999 and 2004 only one article appeared in the American Sociological Review, the American Journal of Sociology, or Social Forces using primary data collected with Web‐based research techniques. Since then there have been only a handful of studies published in these core sociology journals drawing on Web‐based surveys or other forms of Web‐based data. The use of Internet‐based data has become widespread in many academic fields, especially health research and education; Web‐based techniques are becoming routine in the practice and study of politics; and online commercial and market research has become a billion dollar industry. At the same time, the utility of random digit dialing surveys has eroded considerably owing to declining contact rates, increased use of technologies to screen unwanted telephone calls, and the replacement of landline telephones with cell phones. There is increasing evidence that Internet research can produce representative data. Although Web‐based surveys may overrepresent some populations, Internet usage in the general population is now well over 75 per cent and is especially strong among some hard to reach populations. Internet surveys have the potential to reduce measurement error, missing data, and respondent attrition. Sociologists must overcome their fear of participation in stigmatized Internet research and actively engage in the development of techniques and refinements that will increase the utility and validity of Internet‐based data collection. 相似文献
80.