全文获取类型
收费全文 | 2370篇 |
免费 | 77篇 |
专业分类
管理学 | 430篇 |
民族学 | 20篇 |
人口学 | 240篇 |
丛书文集 | 14篇 |
理论方法论 | 257篇 |
综合类 | 25篇 |
社会学 | 1131篇 |
统计学 | 330篇 |
出版年
2023年 | 20篇 |
2022年 | 13篇 |
2021年 | 27篇 |
2020年 | 55篇 |
2019年 | 64篇 |
2018年 | 62篇 |
2017年 | 89篇 |
2016年 | 76篇 |
2015年 | 57篇 |
2014年 | 96篇 |
2013年 | 432篇 |
2012年 | 89篇 |
2011年 | 82篇 |
2010年 | 77篇 |
2009年 | 70篇 |
2008年 | 77篇 |
2007年 | 78篇 |
2006年 | 72篇 |
2005年 | 64篇 |
2004年 | 49篇 |
2003年 | 47篇 |
2002年 | 67篇 |
2001年 | 55篇 |
2000年 | 36篇 |
1999年 | 37篇 |
1998年 | 40篇 |
1997年 | 21篇 |
1996年 | 35篇 |
1995年 | 26篇 |
1994年 | 26篇 |
1993年 | 30篇 |
1992年 | 22篇 |
1991年 | 23篇 |
1990年 | 15篇 |
1989年 | 15篇 |
1988年 | 22篇 |
1987年 | 21篇 |
1986年 | 19篇 |
1984年 | 19篇 |
1983年 | 24篇 |
1982年 | 22篇 |
1981年 | 16篇 |
1980年 | 22篇 |
1979年 | 21篇 |
1978年 | 13篇 |
1977年 | 10篇 |
1976年 | 16篇 |
1975年 | 19篇 |
1974年 | 11篇 |
1973年 | 10篇 |
排序方式: 共有2447条查询结果,搜索用时 796 毫秒
111.
The aim of this paper is to discuss the contribution of two complementary approaches for designing and evaluating new driver support systems likely to improve the operation and safety of the road traffic system. The first approach is based on detailed analyses of traffic crashes so as to estimate drivers' needs for assistance and the situational constraints that safety functions should address to be efficient. The second approach is based on in depth-analyses of behavioral adaptations induced by the usage of new driver support systems in regular driving situations and on drivers' acceptance of the assistance provided by the systems. 相似文献
112.
Everson MD Sandoval JM Berson N Crowson M Robinson H 《Journal of child sexual abuse》2012,21(1):72-90
In the absence of photographic or DNA evidence, a credible eyewitness, or perpetrator confession, forensic evaluators in cases of alleged child sexual abuse must rely on psychosocial or "soft" evidence, often requiring substantial professional judgment for case determination. This article offers a three-part rebuttal to Herman's (2009 ) argument that forensic decisions based on psychosocial evidence are fundamentally unreliable and that this conclusion represents settled science. The article also discusses the potentially adverse consequences of Herman's proposed reforms to forensic practice on child protection and prosecution efforts. 相似文献
113.
Van Deun D Verhaert V Willemen T Wuyts J Verbraecken J Exadaktylos V Haex B Vander Sloten J 《Work (Reading, Mass.)》2012,41(Z1):1274-1280
Proper body support plays an import role in the recuperation of our body during sleep. Therefore, this study uses an automatically adapting bedding system that optimises spinal alignment throughout the night by altering the stiffness of eight comfort zones. The aim is to investigate the influence of such a dynamic sleep environment on objective and subjective sleep parameters. The bedding system contains 165 sensors that measure mattress indentation. It also includes eight actuators that control the comfort zones. Based on the measured mattress indentation, body movements and posture changes are detected. Control of spinal alignment is established by fitting personalized human models in the measured indentation. A total of 11 normal sleepers participated in this study. Sleep experiments were performed in a sleep laboratory where subjects slept three nights: a first night for adaptation, a reference night and an active support night (in counterbalanced order). Polysomnographic measurements were recorded during the nights, combined with questionnaires aiming at assessing subjective information. Subjective information on sleep quality, daytime quality and perceived number of awakenings shows significant improvements during the active support (ACS) night. Objective results showed a trend towards increased slow wave sleep. On the other hand, it was noticed that % N1-sleep was significantly increased during ACS night, while % N2-sleep was significantly decreased. No prolonged N1 periods were found during or immediately after steering. 相似文献
114.
ABSTRACTHigher education is one of the social fields where inequalities are produced and reproduced. Nevertheless, we still know very little about the ways in which heterogeneities and inequalities have been experienced and interpreted by those involved in international academic mobility. In this introductory editorial, we consider some of the crucial conceptual issues involved in the study of the nexus between inequalities and international academic mobility. First, we argue that it is important to take manifold inequalities into account when examining this nexus. After all, inequalities can be detected at different levels, and the mobility process is structured around multiple heterogeneities rather than by a single one. Second, we discuss how international academic mobility and inequalities attached to it go beyond nation-state borders. Third, we argue it is beneficial to extend the scope of to the mobility process as a whole, as inequalities in opportunities and outcomes are intrinsically connected. 相似文献
115.
Xihui Wang Xiang Wang Liang Liang Xiaohang Yue Luk N. Van Wassenhove 《Production and Operations Management》2017,26(11):2137-2150
Evaluating and quantifying human suffering in humanitarian operations offers an innovative and potentially powerful way to assess the performance of humanitarian logistics (HL) and help build optimization models. Previous studies have suggested deprivation cost as a metric and have estimated deprivation cost functions for water using willingness‐to‐pay. Our study proposes deprivation levels, defined as the degree of human suffering caused by lack of access to a good or service, and estimates deprivation level functions using a numerical rating scale. Analyzing data collected from respondents with and without disaster experience, we find that individuals in the latter category estimate deprivation differently from the beneficiaries of disaster relief. Our study demonstrates that deprivation levels can be expressed as logistic growth functions with a typical S‐shape, and that these can be integrated into HL optimization models to better account for human suffering. 相似文献
116.
Mahyar Eftekhar Hongmin Li Luk N. Van Wassenhove Scott Webster 《Production and Operations Management》2017,26(5):802-816
Despite high demand and resource limitations, humanitarian organizations (HOs) typically do not share resources and/or coordinate in the field. While coordination enhances operational performance and saves costs, the general perception is that it dilutes the media attention that individual organizations might receive, and negatively influences their future donation income. In this study, we empirically unveil the impact of media exposure and operational performance on the donations obtained by HOs. Then, based on the empirical results, we develop a stylized model to characterize the structure of preferred coordination policies with respect to an organization's funding source and main mandate. Our findings shed light on the incentives and dynamics that drive behaviors in humanitarian operations and provide insights for policy makers on designing and implementing mechanisms that encourage humanitarian coordination. 相似文献
117.
Established in 1994 through the amalgamation of several teacher training colleges, The Hong Kong Institute of Education (HKIEd) is the major multidisciplinary teacher education provider in the Hong Kong SAR. Despite this, the Institute does not have a particularly high research profile when compared with its peer institutions in Hong Kong and around the world. Its research publishing achieves modest exposure and impact in international educational research literature. The Institute has a goal to attain the title of a “university of education” and has identified an improvement in its research output and profile as critical to achieving this. In this context the HKIEd Library embarked on the redevelopment of its institutional repository, changing its direction from being an archive of institutional publications to one which brought together and offered access to the sum total of published output of the Institute since its foundation, in a deliberate effort to promote Institute research. This paper explores the particular approach taken by the Library to the development of the institutional repository, how the repository contributes directly to and aligns with the research strategies of the Institute, and the impact the Repository has had so far on improving the profile of research at HKIEd. 相似文献
118.
119.
Judith Christine Streak Derek Yu Servaas Van der Berg 《Social indicators research》2009,94(2):183-201
This paper offers evidence on the sensitivity of child poverty in South Africa to changes in the adult equivalence scale (AES)
and updates the child poverty profile based on the Income and Expenditure Survey 2005/06. Setting the poverty line at the
40th percentile of households calculated with different AESs the scope and composition of child poverty are found to be relatively
insensitive to the scale used. The rankings of children of different ages, girls versus boys, racial groupings and children
living in rural versus urban areas are unaffected by choice of AES, although some provincial rankings on the poverty headcount
measure are. The proportions of children and households ‘correctly’ identified as poor for the full range of scales is extremely high.
These findings support the argument that it may be appropriate for profiling poverty in South Africa to use a poverty line
based on a per capita welfare measure. For the construction of the child poverty profile, per capita income is used as the
welfare indicator with the poverty line set at the 40th percentile of household. The profile suggests that poverty amongst
children is more extensive than amongst the population or adults even after the massive injection of transfers into households
with poor children through the child support grant. The child poverty headcount, depth and severity are all highest amongst
children age 0–4 and lowest amongst those aged 15–17, who are not yet beneficiaries of the grants. They are also highest amongst
African and Coloured children. Large variations across provinces remain. The analysis underlines the importance of prioritising
children in the fight against poverty, particularly in their earliest years. 相似文献
120.
Corey E. Flanders Lesley A. Tarasoff Melissa Marie Legge Margaret Robinson Giselle Gos 《Journal of homosexuality》2017,64(8):1014-1032
The majority of LGBTQ psychological research focuses on dysfunction. The exclusion of strengths-based perspectives in LGBTQ psychology limits the understanding of LGBTQ mental health. In this article we report experiences that young bisexual and other nonmonosexual people perceive as affirming of their sexual identity. A 28-day, daily diary study was used to investigate whether bisexual-identified participants encountered positive experiences related to their sexual identity, and which type of experiences they perceived to be positive. Using a constructivist grounded theory approach, participants’ experiences were organized according to a social ecological model. Experiences were reported at the intrapersonal, interpersonal, and institutional levels, but most positive sexual identity experiences occurred at the interpersonal level. Implications for positive health outcome research and the integration of positive psychology with LGBTQ psychology are discussed, as well as study limitations. 相似文献