全文获取类型
收费全文 | 165篇 |
免费 | 6篇 |
专业分类
管理学 | 27篇 |
民族学 | 3篇 |
人口学 | 25篇 |
理论方法论 | 33篇 |
综合类 | 2篇 |
社会学 | 49篇 |
统计学 | 32篇 |
出版年
2023年 | 2篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 2篇 |
2019年 | 4篇 |
2018年 | 8篇 |
2017年 | 13篇 |
2016年 | 7篇 |
2015年 | 8篇 |
2014年 | 3篇 |
2013年 | 38篇 |
2012年 | 8篇 |
2011年 | 11篇 |
2010年 | 6篇 |
2009年 | 2篇 |
2008年 | 9篇 |
2007年 | 6篇 |
2006年 | 3篇 |
2005年 | 8篇 |
2004年 | 3篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2001年 | 5篇 |
2000年 | 3篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1996年 | 2篇 |
1994年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有171条查询结果,搜索用时 0 毫秒
21.
This article presents an approach to the problem of terrorism risk assessment and management by adapting the framework of the risk filtering, ranking, and management method. The assessment is conducted at two levels: (1) the system level, and (2) the asset-specific level. The system-level risk assessment attempts to identify and prioritize critical infrastructures from an inventory of system assets. The definition of critical infrastructures offered by Presidential Decision Directive 63 was used to determine the set of attributes to identify critical assets--categorized according to national, regional, and local impact. An example application is demonstrated using information from the Federal Highway Administration National Bridge Inventory for the State of Virginia. Conversely, the asset-specific risk assessment performs an in-depth analysis of the threats and vulnerabilities of a specific critical infrastructure. An illustration is presented to offer some insights in risk scenario identification and prioritization, multiobjective evaluation of management options, and extreme-event analysis for critical infrastructure protection. 相似文献
22.
C.Y. Leung 《统计学通讯:理论与方法》2013,42(11):3869-3880
The plug–in Anderson's covariate classification statistic is constructed on the basis of an initially unclassified training sample by means of posty–stratification. The asymptotic efficiency relative to the discriminant based on an initially classified training sample is evaluated for the case where a covariate is present. Effect of post–stratification is examined. 相似文献
23.
24.
Denis Heng-Yan Leung & You-Gan Wang 《Australian & New Zealand Journal of Statistics》1998,40(1):43-52
The paper studies stochastic approximation as a technique for bias reduction. The proposed method does not require approximating the bias explicitly, nor does it rely on having independent identically distributed (i.i.d.) data. The method always removes the leading bias term, under very mild conditions, as long as auxiliary samples from distributions with given parameters are available. Expectation and variance of the bias-corrected estimate are given. Examples in sequential clinical trials (non-i.i.d. case), curved exponential models (i.i.d. case) and length-biased sampling (where the estimates are inconsistent) are used to illustrate the applications of the proposed method and its small sample properties. 相似文献
25.
Leah J. Plunkett John Reece Matthew P. Symond Tania Leung 《Australian and New Zealand Journal of Family Therapy》2023,44(2):162-178
Child mental health disorders represent a major burden to public health in Australia due to high prevalence rates, the widespread impact across domains, and the potential for difficulties to persist into adolescence and adulthood. Extensive evidence exists for the use of parent management training and cognitive behavioural therapy to treat difficulties experienced by children; however, a proportion of children do not benefit as expected from these treatments. The use of complementary therapeutic approaches and variations to the mode and intensity of existing intervention is warranted; family inpatient units represent a unique example of this. The aim of this study is to evaluate the effectiveness of a well-established Australian inpatient unit that admits the whole family, for children aged 12 years and younger referred with mental health, behavioural, or emotional difficulties. This study's longitudinal within-subject study design utilised routinely collected outcome data from the systemic clinical outcome and routine evaluation, 15 item (SCORE-15)—a valid and reliable measure of family functioning—from a sample of 980 participants attending the Family Residential Program. This study reported significant improvement in family functioning across all outcome variables between baseline and post-intervention, with no variables returning to pre-intervention levels at follow-up. Clinically significant changes in overall family functioning showed that 37% of participant scores moved from the clinical range at baseline to the nonclinical range post-intervention. This study represents the first empirical evaluation of the Family Residential Program, and the reported results provide compelling evidence for the program to effect improvement in family functioning for families with long-standing and severe difficulties. Poor rates of questionnaire completion following intervention frequent the literature base of family inpatient units, with low post-intervention (56%) and follow-up (12%) rates evident in this study. This study uniquely contributes to the growing evidence base of family inpatient units using rigorous evaluation methods. 相似文献
26.
Cheung M, Leung P, Cheung A. Depressive symptoms and help‐seeking behaviors among Korean Americans Int J Soc Welfare 2011: 20: 421–429 © 2010 The Author(s), International Journal of Social Welfare © 2010 Blackwell Publishing Ltd and the International Journal of Social Welfare. Korean Americans represent the fifth largest group of Asian Americans in the USA. This exploratory survey of 205 Korean Americans (92.2 percent foreign born) found that those with depressive symptoms tend to be younger, have lower incomes, and are more concerned about their basic needs, community/social needs, family relationship issues, and healthcare issues than those without depressive symptoms. Income, healthcare concerns, and anxiety were significant predictors of depression. The likelihood of having depressive symptoms among Korean Americans with anxiety was 240 times higher than among those without anxiety, but acculturation was not a significant contributing factor. Most respondents tended to seek advice about their mental health problems from physicians and non‐mental health professionals (friends and religious healers). Implications for social work education, research, practice, and policy are discussed in relation to the need to use evidence‐based practice data to plan culturally relevant services for ethnic minorities. 相似文献
27.
Ngai Ming Yip Terry Tse Fong Leung Ronggui Huang 《Journal of social service research》2013,39(5):675-689
ABSTRACT As the work-unit system fell after economic reform in China, neighborhoods replaced work units as the primary provider of vital social services for the urban population and became a new social space for enhancing the quality of people's well-being. This study examined the neighborhood characteristics that influenced personal well-being of residents. Drawn by multistage sampling and administered by face-to-face interviews, the survey included a sample of 976 participants from 31 neighborhoods in urban Shanghai. Results indicate that neighboring behaviors enhanced subjective well-being of the young and middle-aged residents but had no impact on older people. Sense of community, on the other hand, was found to contribute to well-being of all age groups and was particularly strong among older people in more deprived neighborhoods. Findings inform development of community practice strategies for vitalizing community efficacy and fostering individual well-being in urban China. Recommendations for future research are made using the results of this study. 相似文献
28.
‘International marriage’ has increased within rural areas in South Korea. As an increasing number of rural women move to urban areas, men are left facing the challenges of finding appropriate spouses. This issue stimulated support for ‘international marriages’ by the Korean government. A review was carried out of the literature of foreign wives' cultural adaptation in South Korea using the ecological systems. While foreign wives have escaped the hardships of lower economic status in their home country, they often face new challenges in South Korea. The article recommends that one-stop multicultural services are needed to address the cultural issues facing non-Korean women. 相似文献
29.
Byung‐Cheon Choi Kangbok Lee Joseph Y.‐T. Leung Michael L. Pinedo Dirk Briskorn 《Production and Operations Management》2012,21(1):115-128
We consider the transport of containers through a fleet of ships. Each ship has a capacity constraint limiting the total number of containers it can carry and each ship visits a given set of ports following a predetermined route. Each container has a release date at its origination port, and a due date at its destination port. A container has a size 1 or size 2; size 1 represents a 1 TEU (20‐foot equivalent unit) and size 2 represents 2 TEUs. The delivery time of a container is defined as the time when the ship that carries the container arrives at its destination port. We consider the problem of minimizing the maximum tardiness over all containers. We consider three scenarios with regard to the routes of the ships, namely, the ships having (i) identical, (ii) nested, and (iii) arbitrary routes. For each scenario, we consider different settings for origination ports, release dates, sizes of containers, and number of ports; we determine the computational complexity of various cases. We also provide a simple heuristic for some cases, with its worst case analysis. Finally, we discuss the relationship of our problems with other scheduling problems that are known to be open. 相似文献
30.
Leung SF 《Journal of population economics》1994,7(4):379-392
This paper investigates both theoretically and numerically the impact of sex selection on fertility. A static quantity-quality model of fertility is employed to compare fertility choices in two regimes: one in which parents cannot choose the gender of children and another in which parents can fully choose the gender of children. The static theory shows that whether sex selection reduces fertility depends on the second and third derivatives of the utility function and the child expenditure function. A numerical dynamic analysis is also presented. Using empirical dynamic models of fertility and Monte Carlo integration technique, the simulation shows that sex selection on the firstborn child among the Chinese in Malaysia could reduce fertility by about 3%.I thank the referees for their comments. I am indebted to James Heckman for providing generous computing support. Computational facilities were funded by NICHD Grant HD-19226 and NSF Grant SES-84-11242 to the Economics Research Center, NORC. 相似文献