An algorithmic approach to construct D-optimal saturated designs for logistic model

In this paper, locally D-optimal saturated designs for a logistic model with one and two continuous input variables have been constructed by modifying the famous Fedorov exchange algorithm. A saturated design not only ensures the minimum number of runs in the design but also simplifies the row exchange computation. The basic idea is to exchange a design point with a point from the design space. The algorithm performs the best row exchange between design points and points form a candidate set representing the design space. Naturally, the resultant designs depend on the candidate set. For gain in precision, intuitively a candidate set with a larger number of points and the low discrepancy is desirable, but it increases the computational cost. Apart from the modification in row exchange computation, we propose implementing the algorithm in two stages. Initially, construct a design with a candidate set of affordable size and then later generate a new candidate set around the points of design searched in the former stage. In order to validate the optimality of constructed designs, we have used the general equivalence theorem. Algorithms for the construction of optimal designs have been implemented by developing suitable codes in R.     

Self-efficacy enhanced in a cross-cultural context through an initiative in under-resourced schools in KwaZulu-Natal,South Africa

This paper discusses the Khanyisa Programme, an initiative in KwaZulu-Natal, South Africa, where learners from under-resourced schools are supported by teachers and high achievers in Grade 11 and 12 from a previously advantaged state school under apartheid. A qualitative, evaluative study was undertaken to identify key elements in the ongoing success of the programme and collect participant suggestions for improvement. The findings, discussed within the framework of self-efficacy theory, identified enormous gains by Khanyisa learners, leading to vastly improved career prospects.     

Implementation of a school-wide prevention programme-teachers’ and headmasters’ perceptions of organizational capacity

This study focuses on schools’ organizational capacity to implement a Swedish school-wide programme, Prevention in School (PS). It is based on semi-structured interviews with seven headmasters and 13 teachers from seven Swedish schools. The interviews were analyzed by the use of qualitative content analysis.The findings show that the adoption of a comprehensive intervention like PS challenges the school organization as the staff encountered a variety of organizational barriers when implementing the programme. Factors connected to lack of consensus, collaboration and insufficient programme management were the main barriers that were identified. Teachers wanted a more extensive support from their headmasters in terms of participation in different programme activities. It was emphasized that peer coaches need to be prepared for their task, although the headmasters found it difficult to be able to choose those teachers who they perceived as the most suitable.It is concluded that leadership, coaching and staff selection need particular attention when implementing a programme like PS, since those factors have been defined as important implementation drivers, both in this study and previously.     

我国高校通识教育课程审议模式探析

从主体、内容及过程等层面对课程审议模式的内涵予以澄清,基于审议的方向和重心的视角,提出上构式课程审议和下构式课程审议两种模式。通过对国内大学通识教育课程实践的考察,将其归纳为下构式的审议模式,在对其基本特征与成效进行分析的基础上,尝试创建一种上构式的通识教育课程审议模式,并对不同阶段的审议内容和特征展开论证。     

Estimation of the parameter of a dynamically selected population for two subclasses of the exponential family

We introduce the problem of estimation of the parameters of a dynamically selected population in an infinite sequence of random variables and provide its application in the statistical inference based on record values from a non stationary scheme. We develop unbiased estimation of the parameters of the dynamically selected population and evaluate the risk of the estimators. We provide comparisons with natural estimators and obtain asymptotic results. Finally, we illustrate the applicability of the results using real data.     

The Food Crisis and its Impacts on Poverty in Senegal and Mali: Crossed Destinies

This article uses two CGE macro‐micro models to analyse the distributional impact of the food crisis and policy responses in two neighbouring African countries, both of which are strongly dependent on agriculture. The approach captures structural differences at both the macro and micro level for household income and expenditure structures, and the results reveal differences for poverty impact at the national and sub‐group levels, as well as for inequality and pro‐poor analysis. The importance of country‐specific analysis and the risk of extrapolating conclusions from one country to another are also highlighted.     

论消费在国际传媒生产总过程中的地位

在国际传媒生产贸易中，传媒产品消费的本质就是价值认可式的精神性消费，在自愿获得消费物的消费中，得到精神与心灵上的满足，实现对一国传媒产品的最优化接受。由此本质出发，总结了消费的六种类型，在分析梳理其逻辑关系的基础上，论证了消费在国际传媒生产总过程中的主导地位。     

强化通识教育是提高西部民族高等教育质量的必由之路

文章就通识教育的提出、通识教育与西部民族高等教育质量提高的关系,以及如何实施通识教育提出了自己的看法。     

试论民族地区普通中学多媒体课件制作及管理

运用现代教育技术提高教学效率是民族地区普通中学发展的必由之路。只有正确认识民族地区普通中学教育技术应用的背景,加强对此类教学资源的管理,才能使之更好服务于教学,提高民族地区教学实践活动的效率。