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991.
Matthew A. Liao‐Troth 《Nonprofit management & leadership》2001,11(4):423-442
This study addresses the extension of research on paid employees to volunteer workers. Pearce (1978, 1993b) has postulated that job attitudes are substantially different between volunteers and paid employees, based on her work studying fourteen organizations employing either entirely volunteer workgroups or entirely paid workgroups. Another interpretation of her data would be that the organizational culture of such workgroups is different, not the individual job attitudes. 相似文献
992.
Tama Leventhal Julia A. Graber Jeanne Brooks‐Gunn 《Journal of research on adolescence》2001,11(3):297-323
The antecedents, correlates, and consequences of adolescent employment were investigated in a sample of 251 low‐income, African American youth that were followed since birth. The youth (age: M at preschool = 4.89, SD= .70; M at adolescence = 16.44, SD= .66; M at transition to adulthood = 19.36, SD= .76; and M at early adulthood = 27.67, SD= .75) were the firstborn children of African American teenage mothers who gave birth in Baltimore in the 1960s. Analyses examined the antecedents and correlates of age of entry into employment and stability of employment during adolescence. The associations of adolescent work experiences with subsequent adult education and employment outcomes also were considered. Findings indicate that among this sample of low‐income, African American youth, those who repeated a grade in school during middle childhood were more likely to enter the workforce at later ages than their peers who did not repeat a grade. The small subset of adolescents who never worked (n= 12) appear to be markedly more disadvantaged than their peers who worked. At the transition to adulthood, adolescents who entered the workforce earlier were more likely to complete high school than their peers. In addition, stable employment during the adolescent years had more beneficial effects on young men's chances of attending college than young women's postsecondary education. This pattern of findings is consistent with ethnographic accounts of adolescent employment among poor, minority, urban youth. 相似文献
993.
Moshe Anisfeld Gerald Turkewitz Susan A. Rose Faigi R. Rosenberg Faith J. Sheiber Deborah A. Couturier‐Fagan Joseph S. Ger Iris Sommer 《Infancy》2001,2(1):111-122
Newborns (N = 83) were presented with 3 conditions, each for 160 sec: tongue protrusion (TP), mouth opening (MO), and control (CO). In TP and MO, a female model alternated between demonstrating the gesture for 20 sec and presenting a passive, motionless face for 20 sec. In CO, she presented a passive face in both the “demonstration” and “passive” intervals. The participants' eyes were more widely open in the demonstration intervals of TP and MO than in the passive intervals, indicating that they were attending to the gestures. In TP, the participants produced more TP responses than MO responses, but in MO there was no effect, undermining the neonatal imitation hypothesis. 相似文献
994.
Judith R. Smith Jeanne Brooks‐Gunn Pamela K. Klebanov Kyunghee Lee 《Journal of marriage and the family》2000,62(3):808-821
We examine the effects of mothers' strategies of combining employment and welfare receipt during the first 3 years of their child's life on the child's cognitive development, behavior problems, and home learning environment at ages 5 to 6. We compare the child outcomes of those mothers who were continuously employed and received no welfare with (a) those who worked some or all of the 3 years and also received public assistance and (b) those who were totally dependent on public assistance. We studied children in single‐parent families (N= 1271 ) living below 200% of the poverty threshold using data from the National Longitudinal Survey of Youth—Child Supplement. No negative association was found on most child outcomes with a mother's employment whether or not it was combined with public assistance. However, mothers' not working at all and receiving financial support solely from AFDC was associated with negative child outcomes. We discuss the implications of these findings for the possible effects of the new welfare laws on families and young children. 相似文献
995.
I‐Fen Lin 《Journal of marriage and the family》2000,62(2):388-398
This paper examines whether perceptions of fairness motivate fathers to pay child support and whether perceptions of fairness interact with routine income withholding in collecting payments. Using a study of 392 nonresident fathers who filed for divorce between 1986 and 1988 in the state of Wisconsin, I found that both perceived fairness and income withholding increase fathers' compliance with child support obligations. The effects of these two strategies on compliance are not additive, however. If fathers think their child support orders are fair, the use of routine income withholding does not add to compliance. 相似文献
996.
This paper reports on part of a wider study concerned with the collaborative efforts of an inquirer and six people with an intellectual disability, to develop a grounded theory explaining the processes by which these informants manage the relationships within their personal communities. The study was conducted through a series of in-depth interviews with each informant; a process characterised by information sharing, tentative theory development and elaboration, and informants' checking the accuracy of the emerging theory. This inductive approach allowed not only an insight into the lives of each informant, but recognised the informants' expertise in matters concerning their own lives and thus facilitated the emergence of theoretical elements of relevance to the informants themselves. The focus of the paper is on the collaborative or partnership approach adopted. The outcomes of the research partnership are detailed and implications drawn for the role of research in the lifestyles of people with an intellectual disability. 相似文献
997.
Jean‐Marie Dufour Mohamed Taamouti 《Econometrica : journal of the Econometric Society》2005,73(4):1351-1365
It is well known that standard asymptotic theory is not applicable or is very unreliable in models with identification problems or weak instruments. One possible way out consists of using a variant of the Anderson–Rubin ((1949), AR) procedure. The latter allows one to build exact tests and confidence sets only for the full vector of the coefficients of the endogenous explanatory variables in a structural equation, but not for individual coefficients. This problem may in principle be overcome by using projection methods (Dufour (1997), Dufour and Jasiak (2001)). At first sight, however, this technique requires the application of costly numerical algorithms. In this paper, we give a general necessary and sufficient condition that allows one to check whether an AR‐type confidence set is bounded. Furthermore, we provide an analytic solution to the problem of building projection‐based confidence sets from AR‐type confidence sets. The latter involves the geometric properties of “quadrics” and can be viewed as an extension of usual confidence intervals and ellipsoids. Only least squares techniques are needed to build the confidence intervals. 相似文献
998.
George‐Marios Angeletos Christian Hellwig Alessandro Pavan 《Econometrica : journal of the Econometric Society》2007,75(3):711-756
Global games of regime change—coordination games of incomplete information in which a status quo is abandoned once a sufficiently large fraction of agents attack it—have been used to study crises phenomena such as currency attacks, bank runs, debt crises, and political change. We extend the static benchmark examined in the literature by allowing agents to take actions in many periods and to learn about the underlying fundamentals over time. We first provide a simple recursive algorithm for the characterization of monotone equilibria. We then show how the interaction of the knowledge that the regime survived past attacks with the arrival of information over time, or with changes in fundamentals, leads to interesting equilibrium properties. First, multiplicity may obtain under the same conditions on exogenous information that guarantee uniqueness in the static benchmark. Second, fundamentals may predict the eventual fate of the regime but not the timing or the number of attacks. Finally, equilibrium dynamics can alternate between phases of tranquility—where no attack is possible—and phases of distress—where a large attack can occur—even without changes in fundamentals. 相似文献
999.
1000.