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981.
In the mid to early 1970s feminist writers raised four major criticisms about sociological research on women and expressed concern about the related issue of the discipline's treatment of women sociologists. Critics charged that sociological research underrepresented women as subjects, concentrated on research topics more central to men's than to women's lives, used concepts, paradigms, methods, and theories better portraying men's than women's lives, and used men and male experience as norms against which all social experience was assessed. Examination of published research in ten major sociology journals the 1974–83 period suggests that some concerns articulated in the critiques are reflected in subsequent published work, but others have had little or only limited impact. Findings suggest an association between women's participation as editors, board members, and authors in journals and the quantity and character of published gender articles. 相似文献
982.
983.
In Western cultures, girls' self‐esteem declines substantially during middle adolescence, with changes in body image proposed as a possible explanation. Body image develops in the context of sociocultural factors, such as unrealistic media images of female beauty. In a study of 136 U.K. girls aged 11–16, experimental exposure to either ultra‐thin or average‐size magazine models lowered body satisfaction and, consequently, self‐esteem. Self‐esteem was also lower among older than among younger girls. Structural equation modeling showed that this age trend was partially accounted for by a corresponding downward trend in body satisfaction; this, in turn, was fully accounted for by upward age trends in awareness and internalization of sociocultural attitudes toward appearance, and in social comparison with media models. Results support calls for early educational interventions to help girls to deconstruct advertising and media images. 相似文献
984.
Mark Dickerson John Hinchy 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1988,4(3):135-151
Prevalence rate estimates were made for four levels of excessive gambling in Australia. Poker machine players (N=398) and off-course bettors (N=172) in the Australian Capital Territory were surveyed on their gambling. Four increasingly strict levels of excessive gambling were defined. Prevalence rates for each level were estimated for the general population using results of two commercial surveys run concurrently with this research. Estimates ranged from 1.73% of the population for the most liberal level to 0.25% of the population for the most strict. The fourth level is the most psychologically adequate and so 0.25% is the most appropriate estimate. While no direct correspondence to the current DSM-III could be found, an estimate in terms of the revised DSM-III for pathological gambling was at most 0.25% of the population. This estimate may further fall in those places where gambling facilities are less available. 相似文献
985.
This study develops and empirically tests a theory which explains how workplace unionization affects worker responses to HRM
innovation. We hypothesize that union support varies depending on whether the union perceives the innovation as a threat to
its power base and institutional security or as an opportunity to increase its status and influence. This differential effect
is expected to be curvilinear. Our hypothesis is generally supported by our sample of 230 organizations. Practical and research
implications are discussed.
We are indebted to Kay Devine and Thomas G. Cummings for helpful comments on earlier versions of this paper. 相似文献
986.
Roseanne M. Lorenzana Richard Troast Julie M. Klotzbach Mark H. Follansbee Gary L. Diamond 《Risk analysis》2005,25(1):169-178
Typical exposures to lead often involve a mix of long-term exposures to relatively constant exposure levels (e.g., residential yard soil and indoor dust) and highly intermittent exposures at other locations (e.g., seasonal recreational visits to a park). These types of exposures can be expected to result in blood lead concentrations that vary on a temporal scale with the intermittent exposure pattern. Prediction of short-term (or seasonal) blood lead concentrations arising from highly variable intermittent exposures requires a model that can reliably simulate lead exposures and biokinetics on a temporal scale that matches that of the exposure events of interest. If exposure model averaging times (EMATs) of the model exceed the shortest exposure duration that characterizes the intermittent exposure, uncertainties will be introduced into risk estimates because the exposure concentration used as input to the model must be time averaged to account for the intermittent nature of the exposure. We have used simulation as a means of determining the potential magnitude of these uncertainties. Simulations using models having various EMATs have allowed exploration of the strengths and weaknesses of various approaches to time averaging of exposures and impact on risk estimates associated with intermittent exposures to lead in soil. The International Commission of Radiological Protection (ICRP) model of lead pharmacokinetics in humans simulates lead intakes that can vary in intensity over time spans as small as one day, allowing for the simulation of intermittent exposures to lead as a series of discrete daily exposure events. The ICRP model was used to compare the outcomes (blood lead concentration) of various time-averaging adjustments for approximating the time-averaged intake of lead associated with various intermittent exposure patterns. Results of these analyses suggest that standard approaches to time averaging (e.g., U.S. EPA) that estimate the long-term daily exposure concentration can, in some cases, result in substantial underprediction of short-term variations in blood lead concentrations when used in models that operate with EMATs exceeding the shortest exposure duration that characterizes the intermittent exposure. Alternative time-averaging approaches recommended for use in lead risk assessment more reliably predict short-term periodic (e.g., seasonal) elevations in blood lead concentration that might result from intermittent exposures. In general, risk estimates will be improved by simulation on shorter time scales that more closely approximate the actual temporal dynamics of the exposure. 相似文献
987.
Mark Evans 《Journal of applied statistics》1996,23(5):467-492
As an extension to the work of Oliver, the variance-covariance matrices for the powered logistic and Bass equations were obtained and used to show that the addition of a fourth parameter resulted in the estimates for the remaining three parameters corresponding to those of the simple logistic becoming more unreliable. The degree of confidence that could be placed on the estimated parameters of the powered logistic decreased with the degree of asymmetry. However, the Bass equation proved much more resilient to this problem. A Monte Carlo study shows that, in small samples and for data sets that resemble new technologies in the early stages of di usion, the maximum likelihood estimates do not have the desirable properties of estimates based on large samples. 相似文献
988.
989.
Mark J. Benson Toni Schindler-Zimmerman Doris Martin 《Journal of marital and family therapy》1991,17(4):363-372
Children are sometimes excluded from family therapy because of the lack of techniques for fully incorporating children in family sessions. Circular questioning, a technique developed by the Milan team of family therapists, is modified for use with children of varying developmental levels. Five types of circular questions are presented and modifications of each type are discussed. Each modification is further illustrated with a case study. Practical considerations when conducting circular questioning sessions with children are addressed. These modifications of circular questioning with children facilitate the participation and inclusion of children in family therapy. 相似文献
990.
Mark Kotkin 《Journal of Family and Economic Issues》1985,7(3):156-170