首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   221篇
  免费   10篇
管理学   46篇
民族学   2篇
人口学   12篇
丛书文集   1篇
理论方法论   10篇
社会学   114篇
统计学   46篇
  2024年   1篇
  2023年   3篇
  2022年   5篇
  2021年   3篇
  2020年   13篇
  2019年   11篇
  2018年   12篇
  2017年   15篇
  2016年   13篇
  2015年   7篇
  2014年   7篇
  2013年   41篇
  2012年   49篇
  2011年   5篇
  2010年   3篇
  2009年   5篇
  2008年   2篇
  2007年   4篇
  2006年   6篇
  2005年   4篇
  2004年   3篇
  2003年   4篇
  2002年   2篇
  2001年   4篇
  2000年   2篇
  1998年   1篇
  1997年   1篇
  1996年   2篇
  1991年   1篇
  1989年   1篇
  1987年   1篇
排序方式: 共有231条查询结果,搜索用时 312 毫秒
171.
The objectives of this study were to identify elder mistreatment (EM) prevalence among a cohort of older adults receiving visiting nurse care in their homes, determine EM subtypes, and identify factors associated with EM. EM data were collected by nurses during monthly home visits for up to 24 months. It took the nurses a mean of 10.5 visits to discern EM. Fifty-four (7.4%) of 724 patients were identified as mistreated, of which 33 had enough information to subtype the EM. Of these 33, 27 were victims of neglect, 16 of psychological abuse, and 10 of financial exploitation, and 17 suffered more than one type. Among the entire sample, 11 variables were positively correlated with EM presence. Nurses visiting older adults in their homes should be aware that their patients are, as a group, vulnerable to EM, and that the factors identified here may be specific markers of greater risk.  相似文献   
172.
173.
A Bayesian nonparametric model for Taguchi's on-line quality monitoring procedure for attributes is introduced. The proposed model may accommodate the original single shift setting to the more realistic situation of gradual quality deterioration and allows the incorporation of an expert's opinion on the production process. Based on the number of inspections to be carried out until a defective item is found, the Bayesian operation for the distribution function that represents the increasing sequence of defective fractions during a cycle considering a mixture of Dirichlet processes as prior distribution is performed. Bayes estimates for relevant quantities are also obtained.  相似文献   
174.
This article focuses on the nature and extent of parental stress among adoptive parents of special-needs children. In-depth face-to-face interviews of adoptive parents of 35 children were conducted, on average, four months postplacement (but before adoption). One-year follow-up interviews were conducted with parents of 15 (43%) of these children. Qualitative and quantitative data were collected, including parenting stress scores. Results indicated higher than average levels of stress, particularly on subscales related to parent-child dysfunctional interactions and to raising a difficult child. Increased stress levels were associated with poorer family adjustment and with higher levels of child behavior problems. Stress levels remained mostly unchanged over the year. Responses to open-ended questions identified five stress categories: child characteristics, parent-child interactions, family cohesion, parental adjustment, and adoptions service issues. Practice and research implications are discussed.  相似文献   
175.
The role of risk communication and public participation in environmental and public policy decision making has significantly increased over the last 15 years and remains an important social policy issue. In spite of this emphasis, government officials and participants in the process continue to struggle with what makes for "good" public participation. This study used two frameworks--one theoretical and one participant-based-to evaluate two U.S Army Restoration Advisory Boards (RABs). The theoretical framework explores the extent to which the RABs facilitate Habermas's idealized conditions of speech as related to fairness. Not surprisingly, we found that the two RABs do not consistently foster the idealized aspects of fairness suggested by Habermas. The participant-based criteria were elicited through interviews with participants from the various stakeholder groups represented on the RAB, direct observation of RAB meetings, and a review of RAB-related documents. We found that participants' value outcomes (the results of participatory processes) and not just the process itself, which is the focus of the theoretical framework. We also found that participants in the various stakeholder groups had different perceptions of the goals of the participatory process, which were closely related to their notions of success. Our results illustrate both the complexity and importance of using multiple frameworks for evaluating participatory efforts and the need for more systematic evaluation.  相似文献   
176.
Most marital and family therapists, both medically and nonmedically trained, regularly interact with physicians on a professional basis. Though some physicians receive specific training in marital and family therapy in their postgraduate residency programs, (notably those in psychiatry and family medicine), for many, the only academic exposure they receive to this field comes during a 6- to 10-week clinical clerkship in psychiatry during their third or fourth year of medical school. No study could be located which examined marital and family therapy training in undergraduate medical education. The purpose of this study was to gain a better understanding of the level of marital and family therapy training in medical school and to provide information concerning physicians who are not family therapists, and how much knowledge about the field they can be expected to have.  相似文献   
177.
Hierarchical decision making is a multidimensional process involving management of multiple objectives (with associated metrics and tradeoffs in terms of costs, benefits, and risks), which span various levels of a large-scale system. The nation is a hierarchical system as it consists multiple classes of decisionmakers and stakeholders ranging from national policymakers to operators of specific critical infrastructure subsystems. Critical infrastructures (e.g., transportation, telecommunications, power, banking, etc.) are highly complex and interconnected. These interconnections take the form of flows of information, shared security, and physical flows of commodities, among others. In recent years, economic and infrastructure sectors have become increasingly dependent on networked information systems for efficient operations and timely delivery of products and services. In order to ensure the stability, sustainability, and operability of our critical economic and infrastructure sectors, it is imperative to understand their inherent physical and economic linkages, in addition to their cyber interdependencies. An interdependency model based on a transformation of the Leontief input-output (I-O) model can be used for modeling: (1) the steady-state economic effects triggered by a consumption shift in a given sector (or set of sectors); and (2) the resulting ripple effects to other sectors. The inoperability metric is calculated for each sector; this is achieved by converting the economic impact (typically in monetary units) into a percentage value relative to the size of the sector. Disruptive events such as terrorist attacks, natural disasters, and large-scale accidents have historically shown cascading effects on both consumption and production. Hence, a dynamic model extension is necessary to demonstrate the interplay between combined demand and supply effects. The result is a foundational framework for modeling cybersecurity scenarios for the oil and gas sector. A hypothetical case study examines a cyber attack that causes a 5-week shortfall in the crude oil supply in the Gulf Coast area.  相似文献   
178.
Since the implementation of the European Employment Strategy in the 1990s, the issue of gender gaps in the European Union labour markets has been granted a high profile. The Portuguese labour market has performed well on various indicators relating to gender equality, namely, participation and employment rates. Nevertheless, a persistent pay gap remains despite the recent evolution of the labour market, especially concerning the average education level of workers. This article investigates the main factors explaining the gender pay gap across two decades and the way those factors perform along time. We also discuss the means of closing the gap in the context of the European Employment Strategy, considering the lessons from other member states. We used wage decomposition techniques to analyse the relative importance of differences in the productive characteristics of workers, differences in the way men and women are distributed among jobs and the relative importance of discrimination practices. Our findings suggest that most of the pay gap is due to discrimination practices. Individual action by economic agents is insufficient to solve the persistent pay gap. Social partners must incorporate this issue within collective bargaining in order to construct an adequate strategy for reducing the gap, which can only be done by engaging men and women, employees and employers.  相似文献   
179.
This paper is concerned with accuracy properties of simulations of approximate solutions for stochastic dynamic models. Our analysis rests upon a continuity property of invariant distributions and a generalized law of large numbers. We then show that the statistics generated by any sufficiently good numerical approximation are arbitrarily close to the set of expected values of the model's invariant distributions. Also, under a contractivity condition on the dynamics, we establish error bounds. These results are of further interest for the comparative study of stationary solutions and the estimation of structural dynamic models.  相似文献   
180.
Artificial intelligence (AI) methods have revolutionized and redefined the landscape of data analysis in business, healthcare, and technology. These methods have innovated the applied mathematics, computer science, and engineering fields and are showing considerable potential for risk science, especially in the disaster risk domain. The disaster risk field has yet to define itself as a necessary application domain for AI implementation by defining how to responsibly balance AI and disaster risk. (1) How is AI being used for disaster risk applications; and how are these applications addressing the principles and assumptions of risk science, (2) What are the benefits of AI being used for risk applications; and what are the benefits of applying risk principles and assumptions for AI-based applications, (3) What are the synergies between AI and risk science applications, and (4) What are the characteristics of effective use of fundamental risk principles and assumptions for AI-based applications? This study develops and disseminates an online survey questionnaire that leverages expertise from risk and AI professionals to identify the most important characteristics related to AI and risk, then presents a framework for gauging how AI and disaster risk can be balanced. This study is the first to develop a classification system for applying risk principles for AI-based applications. This classification contributes to understanding of AI and risk by exploring how AI can be used to manage risk, how AI methods introduce new or additional risk, and whether fundamental risk principles and assumptions are sufficient for AI-based applications.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号