Tapping into English Language Learners' (ELLs') Prior Knowledge in Social Studies Instruction

Second language research and Culturally Relevant Pedagogy have shown a consensus that ELLs who have studied social studies in their home countries will have a better chance of understanding social studies concepts and quickly catching up to their native English-speaking peers. This article discusses strategies to make good use of ELLs' prior knowledge, native language and culture, and previous literacy to teach social studies concepts meaningfully and effectively to this group of students.     

Knowledge and Skills of Sexual Abuse Prevention: A Study on School-Aged Children in Beijing,China

To examine the level of child sexual abuse prevention knowledge and skills in a sample of school-aged children, a total of 559 children from first to fifth grade were recruited from one primary school in Beijing, China. Participants were asked to finish a questionnaire surveying their knowledge and skills of child sexual abuse prevention. Results showed that accurate rate of knowledge on child sexual abuse prevention were between 44.0% and 80.0%. Percentage of participants having applied the self-protection skills of “saying ‘no,’” “going away,” and “telling adults” properly in hypothetical situations was 57.4%, 28.3%, and 48.3%, respectively. Third-to-fifth graders had a better performance than first-to-second graders, and girls performed better than boys. Findings suggest that Chinese school-aged children are in need of knowledge and skills related to child sexual abuse prevention, and education programs should be developed as soon as possible.     

让农民工享有社会保障、体面劳动和有尊严的生活

完善社会保障和实现体面劳动是全球的共同举措。在我国社会保障制度逐步定型和社会政策日臻完善的今天,加强对农民工的社会保护,完善公共政策和公共管理服务,实现农民工的社会保障权益和体面劳动,是建设服务型政府的需要,也是企业和工会义不容辞的责任。我国《社会保险法》的颁布实施将有利于农民工更好地享有社会保险,实现体面劳动。     

建国以来民主党派政治资源的配置特点及合理性研究

民主党派的政治资源主要包括制度性资源、功能性资源、组织性资源、社会性资源和政策性资源,其配置格局与民主党派在我国政治体系以及多党合作制度中的政治定位密切相关.建国以来民主党派政治资源的配置状况,随着中国共产党对民主党派的性质、地位和作用的认识不断深化以及对政党关系定位日渐清晰、准确而日趋合理,其参政领域和选配职数不断扩大.     

A general approximation to quantiles

For many continuous distributions, a closed-form expression for their quantiles does not exist. Numerical approximations for their quantiles are developed on a distribution-by-distribution basis. This work develops a general approximation for quantiles using the Taylor expansion. Our method only requires that the distribution has a continuous probability density function and its derivatives can be derived to a certain order (usually 3 or 4). We demonstrate our unified approach by approximating the quantiles of the normal, exponential, and chi-square distributions. The approximation works well for these distributions.     

A multiple warm standby δ-shock system with a repairman having multiple vacations

In this article, a warm standby n-unit system is studied. The system is operational as long as there is one unit normal. The unit online, which has a lifetime distribution governed by a phase-type distribution, is also attacked by a shock from some external causes. Assume that shocks arrive according to a Poisson process. Whenever an interarrival time of shock is less than a threshold, the unit online fails. The lifetimes of the units in warm standby is exponentially distributed. A repairman who can take multiple vacations repairs the failed units based on the “first-in-first-out” rule. The repair times and the vacation times of repairman are governed by different phase-type distributions. For this system, the Markov process governing the system is constructed. The system is studied in a transient and stationary regime; the availability, the reliability, the rates of occurrence of the different types of failures, and the working probability of the repairman are calculated. A numerical application is performed to illustrate the calculations.     

徽州文书与清水江文书保护模式比较研究

随着清水江文书的收集、整理和出版,越来越多的文书受到各级政府部门、学术界的重视。如何有效保护、高效利用文书成为一大问题。同时,传统的文书征集方法遭遇到了越来越多的困难和问题,因此,探索建立有别于其他文书保护模式的清水江模式具有重要的现实意义。     

论行业语境下高校校友资源的开发与利用

校友资源是高校最富饶的人才资源。本文试图在行业语境中，讨论高校发展与校友资源之间的辩证关系，并以此为基础，提出开发和利用高校校友资源的对策。     

Bayesian analysis of a multiple-recapture model

In the Bayesian analysis of a multiple-recapture census, different diffuse prior distributions can lead to markedly different inferences about the population size N. Through consideration of the Fisher information matrix it is shown that the number of captures in each sample typically provides little information about N. This suggests that if there is no prior information about capture probabilities, then knowledge of just the sample sizes and not the number of recaptures should leave the distribution of Nunchanged. A prior model that has this property is identified and the posterior distribution is examined. In particular, asymptotic estimates of the posterior mean and variance are derived. Differences between Bayesian and classical point and interval estimators are illustrated through examples.