全文获取类型
收费全文 | 105篇 |
免费 | 4篇 |
专业分类
管理学 | 10篇 |
人口学 | 4篇 |
理论方法论 | 18篇 |
社会学 | 51篇 |
统计学 | 26篇 |
出版年
2023年 | 1篇 |
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 1篇 |
2017年 | 4篇 |
2016年 | 1篇 |
2014年 | 3篇 |
2013年 | 33篇 |
2012年 | 8篇 |
2011年 | 3篇 |
2009年 | 2篇 |
2008年 | 3篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2005年 | 6篇 |
2004年 | 1篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2001年 | 5篇 |
2000年 | 1篇 |
1999年 | 4篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1990年 | 1篇 |
1987年 | 1篇 |
1985年 | 4篇 |
1983年 | 1篇 |
1980年 | 1篇 |
1977年 | 2篇 |
1975年 | 1篇 |
1968年 | 2篇 |
1967年 | 1篇 |
排序方式: 共有109条查询结果,搜索用时 203 毫秒
21.
There is a rapidly growing industry of online learning and distance education programs at the Master of Social Work and Bachelor of Social Work levels both within Australia and globally. A number of best practices have emerged from the literature that warrant consideration when delivering social work programs in online learning and distance education modes. Given the significant advancements in technology that are likely to continue into the next decades, social work academic leaders and accrediting bodies must be prepared to address the changing landscape of higher education, including limited financial resources. Social work academics need to become aware and implement best practices in online learning and distance education e-teaching environments to ensure positive student outcomes, student retention, and student engagement to meet the flexibility needs of students in higher education settings. The purpose of this paper is to identify and discuss the challenges and benefits of distance education and online learning for consideration when providing a social work program in these delivery models.
IMPLICATIONS
Given the significant advancements in technology that are likely to continue into the next decades, social work academic leaders and accrediting bodies must be prepared to address the changing landscape of higher education.
Social work academics need to become aware and implement best practices in the distance education and online teaching environment to ensure positive student outcomes, student retention, and student engagement to meet the flexibility needs of students in higher education settings.
22.
A case study of a public service department's program evaluation provides insights into the social policy-making process as well as findings on the effectiveness of two different forms of treatment for the same social problem. 相似文献
23.
Lyle D. Burgoon Michelle Angrish Natalia Garcia-Reyero Nathan Pollesch Anze Zupanic Edward Perkins 《Risk analysis》2020,40(3):512-523
Adverse outcome pathway Bayesian networks (AOPBNs) are a promising avenue for developing predictive toxicology and risk assessment tools based on adverse outcome pathways (AOPs). Here, we describe a process for developing AOPBNs. AOPBNs use causal networks and Bayesian statistics to integrate evidence across key events. In this article, we use our AOPBN to predict the occurrence of steatosis under different chemical exposures. Since it is an expert-driven model, we use external data (i.e., data not used for modeling) from the literature to validate predictions of the AOPBN model. The AOPBN accurately predicts steatosis for the chemicals from our external data. In addition, we demonstrate how end users can utilize the model to simulate the confidence (based on posterior probability) associated with predicting steatosis. We demonstrate how the network topology impacts predictions across the AOPBN, and how the AOPBN helps us identify the most informative key events that should be monitored for predicting steatosis. We close with a discussion of how the model can be used to predict potential effects of mixtures and how to model susceptible populations (e.g., where a mutation or stressor may change the conditional probability tables in the AOPBN). Using this approach for developing expert AOPBNs will facilitate the prediction of chemical toxicity, facilitate the identification of assay batteries, and greatly improve chemical hazard screening strategies. 相似文献
24.
A Bayesian test procedure Is developed to test; the null hypothesis of no change In the regression matrix of a multivariate lin¬ear model against the alternative hypothesis of exactly one change The resulting test is based on the marginal posterior distribution of the change point; To illustrate the test procedure a numerical example using a bivariate regression model is considered. 相似文献
25.
Fifty-two people with developmental disabilities were interviewed using the Individual Supports Identification System (ISIS). This study reports on persons with developmental disabilities, served by the State of Washington Division of Developmental Disabilities, and includes persons whose onset of disability was prior to 18. To be eligible for services, an individual must have a disability that falls within one of the following categories: (1) mental retardation; (2) cerebral palsy; (3) epilepsy; (4) autism; and (5) other types of central nervous system impairment closely related to mental retardation. Interviews were conducted with two groups. The first comprised individuals with developmental disabilities and the second, significant persons in the life of each participant in the first group. A significant person was considered to be someone known by the individual with disabilities for more than 6 months, spending more time with him or her than others. In addition, the significant person must like the individual with disabilities, and have his or her best interests in mind. Seventy-five per cent of significant persons interviewed were parents. Significant persons also responded to a series of ISIS questions. Responses from the individual with disabilities and from the significant person in his or her life were compared in order to determine similarities and differences in perspective. Comparisons focus on issues pertaining to friends and relationships, living environment and daily care needs. 相似文献
26.
The problem of estimating the switch point in a sequence of independent random variables is studied from a Bayesian viewpoint. Theoretical results and numerical examples are given for the normal sequence and two-phase regression. 相似文献
27.
This paper presents a procedure to estimate the variance components and fixed effects of mixed linear models. The mode of the joint posterior distribution of all the parameters is obtained by an iterative technique. The proposed method is illustrated with one-way and two-fold nested random models. Two numerical examples demonstrate the iterative solution. 相似文献
28.
Lyle D. Broemeling 《统计学通讯:理论与方法》2013,42(1):87-102
Sequences of independent random variables are observed and on the basis of these observations future values of the process are forecast. The Bayesian predictive density of k future observations for normal, exponential, and binomial sequences which change exactly once are analyzed for several cases. It is seen that the Bayesian predictive densities are mixtures of standard probability distributions. For example, with normal sequences the Bayesian predictive density is a mixture of either normal or t-distributions, depending on whether or not the common variance is known. The mixing probabilities are the same as those occurring in the corresponding posterior distribution of the mean(s) of the sequence. The predictive mass function of the number of future successes that will occur in a changing Bernoulli sequence is computed and point and interval predictors are illustrated. 相似文献
29.
This paper develops clinical trial designs that compare two treatments with a binary outcome. The imprecise beta class (IBC), a class of beta probability distributions, is used in a robust Bayesian framework to calculate posterior upper and lower expectations for treatment success rates using accumulating data. The posterior expectation for the difference in success rates can be used to decide when there is sufficient evidence for randomized treatment allocation to cease. This design is formally related to the randomized play‐the‐winner (RPW) design, an adaptive allocation scheme where randomization probabilities are updated sequentially to favour the treatment with the higher observed success rate. A connection is also made between the IBC and the sequential clinical trial design based on the triangular test. Theoretical and simulation results are presented to show that the expected sample sizes on the truly inferior arm are lower using the IBC compared with either the triangular test or the RPW design, and that the IBC performs well against established criteria involving error rates and the expected number of treatment failures. 相似文献
30.
The mixed model is defined. The exact posterior distribution for the fixed effect vector is obtained. The exact posterior distribution for the error variance is obtained. The exact posterior mean and variance of a Bayesian estimator for the variances of random effects is also derived. All computations are non-iterative and avoid numerical integrations. 相似文献