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81.
Investigations of peer collaboration often vary task or social aspects of collaborative contexts and assume that these aspects of the context are experienced similarly by individuals. The present study examined how social aspects (group friendship and gender) of a peer collaborative context related to differences in adolescents' interpretations of task and social problems that occurred while collaborating with peers in a naturalistic classroom setting. Eighth-grade adolescents ( N = 82, 44 females) worked with peers on a six-week Spanish project at school. Adolescents chose to work primarily with same-gender peers and friends. Task and social interpretations of problems were assessed twice. The salience of task problems decreased over time; social problems became somewhat more salient. Social problems were less salient to females than to males. Greater group friendship was associated with the lesser salience of task problems early in the project. The salience of social problems, gender, and friendship were important for understanding performance on the project. The value of considering the context of peer collaborative problem solving from individuals' perspectives is discussed.  相似文献   
82.
Abstract

Mining has a long history of production and operations management. Considering the increasing complexity of reserves, declining metal grades, and worldwide price volatilities, mines have to operate more efficiently than ever. In recent years, companies have been adopting innovative solutions and technologies to reduce costs and remain competitive in the global market. Specifically, management of bottlenecks has been in the focus of the manufacturing industry for decades now. The mining industry has made significant advancements in process improvement tools using equipment, human, and asset tracking capabilities. However, to date, there is no holistic approach or system to identify and manage the bottleneck in the entire value chain of mining. This research proposes a new method to identify and rank the bottlenecks in a mine value chain. The method is applied in a coal mine and the results are presented in the case study.  相似文献   
83.
Abstract This paper examines perceptions of drought vulnerability among residents of the southern San Joaquin Valley portion of Kern County, California. The area is unique in the western United States because of its complex water delivery infrastructure and its intensive level of agricultural production supported by agricultural labor. The area is interesting to rural sociologists because it was part of Goldschmidt's research on the social implications of agribusiness. We argue that the relationship between resource production and social stratification suggested by Goldschmidt's research presents some important implications for understanding perceptions of resource scarcity in the present day. We explore perceptions of drought vulnerability by several dimensions of stratification—primary occupation, location of residence, length of residence, household income, and racial/ethnic background. While our findings illustrate that agricultural owners/operators perceive the greatest levels of concern about severe drought, the unique character of agricultural production in the area is related to perceptions of vulnerability among broader segments of the local population. The findings suggest that dependence upon existing water utilization patterns may present substantial obstacles to effective drought policy and planning.  相似文献   
84.
In this paper I look at the current trend toward positivism in the practice of psychotherapy. I use the term psychotherapy throughout, to remind family therapist readers that the problem is not ours alone. I offer a brief, critical literature review. I suggest that the trend towards positivism offers little of therapeutic value and compromises the ethical practice of psychotherapy. The origins of the trend lie in economic rationalism (demonstrated by the sorry state of the profession in the USA), philosophical error (the belief in certain knowledge) and a misplaced faith in method (simple algorithms exist that can transcend even the most complex circumstances). I dispute the validity of these influences and draw upon David Smail's suggestion that the pursuit of objectivity is an attempt to avoid the awkward necessity of making moral judgements. In the last section of the paper I briefly examine a philosophical framework that could serve as a guide to the subjective practice of psychotherapy and I offer a simple subjective metaphor drawn from a work of literary criticism.  相似文献   
85.
Objectives. This study examines Americans' generalized beliefs about how much the United States can trust other nations, as well as changes over time in such beliefs. Methods. We analyze original panel survey data collected in 2001 and 2002. Results. Although only a minority of panel respondents expressed generalized trust in other nations immediately after the terrorist attacks of September 11, 2001, even fewer expressed such trust when reinterviewed almost a year later. Social trust, political trust, and party loyalties predicted individual‐level change in this form of trust from 2001 to 2002. Conclusions. Declining trust in other nations may have important implications for public opinion and, ultimately, public policy regarding world affairs.  相似文献   
86.
This study uses original data from a large sample of businesses located in Mexican ethnic neighborhoods (barrios) in Texas and California to analyze how perceptions of the economic roles of Mexican immigrant workers differ among 3 employer groups: native ethnic, immigrant ethnic, and non-ethnic. It was found that the immigrant ethnic employer group depends more on Mexican immigrants as workers and as consumers than does the native ethnic group, which tends in many ways to be more like the non-ethnic group. Differences between results for localities on the border with Mexico and those for non-border localities are also discussed.  相似文献   
87.
This study explores the reactions of 202 randomly selected clinical members of the American Association for Marriage and Family Therapy (AAMFT) to a variety of ethical dilemma situations which examine what family therapists are doing in their work when confronted with these difficult situations. Eight of the issues studied have been discussed in the literature and eight are included in the AAMFT's Ethical Principles for Family Therapists (1984). In addition to showing how clinical members responded to dilemmic vignettes that reflect these dilemmas, results indicated that family therapists are facing these dilemmas, have a high rate of consensus of what they would and would not do in each situation and almost all the situations were seen as being ethically significant by the majority of respondents.  相似文献   
88.
Abstract

This article reports the results of a survey of Australian Association of Social Workers (AASW) members in relation to their views of parents of emotionally disturbed children. The survey involved a random sample of AASW members. It replicates a US study of members of the National Association of Social Workers (NASW) conducted by Johnson, Renaud, Schmidt and Stanek (1998). The study was conducted in order to see if there was any similarity in the views of United States (US) and Australian social workers in regard to their view of these parents. The data from the Australian sample using the US Providers' Beliefs About Parents (PBAP) instrument did not support the conclusions of the study in the US. This result emphasises the importance of replication studies when transferring measurement instruments from one country to another.  相似文献   
89.
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