随机参数反对称层合板响应的灵敏度分析及优化设计

工程结构中的复合材料层合板的几何参数往往具有随机性质.如何研究随机参数层合板的灵敏度, 并对参数进行优化分析,这对正确估计结构设计的可靠性有着非常重要的意义.本文用随机摄动法,导出了求反对称层合板响应灵敏度的计算公式,研究了随机参数反对称层合板响应的灵敏度和优化设计,并用网格法计算出最佳铺层角.     

Linguistic Gender Sensitivity Strategies in Current South African Intermediate Phase English Workbooks: Feminisation or Degenderisation?

This study extends research on manifestations of gender insensitivity in learners’ reading materials by shifting attention to the linguistic strategies that authors of current texts employ for the realisation of gender sensitivity. We analysed the content of 12 current (2014) English workbooks (Grade 4–6) used in South African government and public schools for gender sensitive strategies they employed. Most strategies sought to get round the problem caused by the lack of a singular third person gender neutral pronoun in the English Language. Although both feminisation and degenderisation strategies were apparent in the few strategies observed, we observe the difficulty of degenderising reading materials without radical reforms within the English language. We posit that the judicious combination of feminisation and degenderisation holds promise for gender sensitivity in texts.     

不同品种水稻对乙草胺敏感性差异的生理原因探讨

用三种浓度的乙草胺处理对其敏感性不同的三种水稻（敏感品种华籼占、中抗品种粤优青占和抗性品种穗灵占）的发芽种子,水稻幼苗的呼吸速率不同程度受抑制,乙烯释放速率不同程度受干扰,两方面均以华籼占受影响最大,穗灵占受影响最小,粤优青占受影响居中;华籼占为"乙烯-呼吸谐变型";穗灵占为"乙烯-呼吸异变型";品种固有的"乙烯-呼吸型"的差异是不同品种水稻对乙草胺敏感性不同的内在生理原因。     

The need for culturally sensitive sexuality education in a pluralised Nigeria: But which kind?

A substantial number of studies have been conducted on sexuality education in Nigeria. These provide evidence of the positive impact of sexuality education on the psychosocial well-being of children and youth and the value of sexuality education for the sexual health of young people. Yet another research has investigated the views of parents on the school-based sexuality education of children and the different models and approaches employed. All of these studies implicitly reflect an issue that has not yet been sufficiently discussed. Nigeria is a uniquely pluralised country, with a multitude of cultures and sexual cultures. The implications of this diversity for policy and practice in sexuality education and for how sexuality education has (or has not) responded to this heterogeneity are rarely considered. This article addresses this gap by seeking to conceptualise how sexuality education might proactively address the cultural diversity of Nigeria. It begins by sketching out key features of this diversity in Nigeria and highlights the need for a culturally sensitive approach. Thereafter, there is a critical engagement with three possible approaches that sexuality education might take. Highlighting the weaknesses of monocultural, multicultural and transcultural approaches, this article argues for an open-cultural stance as the best means of fostering culturally sensitive sexuality education.     

注重学生的心理感悟--在"读"中学

“书读百遍,其义自见”,在学习古代诗文时,应采用以“诵读”为核心,结合学生个人自学、小组讨论、集体交流的形式来展开,突出学生的主体作用,注重学生的心理感悟,创设开放而有活力的语文课堂。     

农村公共投资满意度情况调查及其敏感度分析

在新农村建设过程中,如何使政府的有限资源得到合理配置,是当前各级政府和组织面临的一个现实而重大的问题.本论文借鉴了国内外有关满意度理论研究的成果和测评方法,通过对山东省农村公共投资满意度调查资料的实证分析,发现硬件方面(通讯状况、供电服务等)农户满意度较高,而软件方面(图书馆服务、技术服务等)农户满意度相对较低;其次,文章鉴于满意度的敏感性分析,给出了当前提高农村公共投资满意度的建议,即政府要在休闲娱乐、技术服务、社会保障和公共卫生等方面应适当加大投资.     

基于集成评价方法的企业技术创新项目决策

摘要：根据技术创新项目决策的特点,提出了一种集成的决策分析方法:模糊层次逼近理想点法(FH-TOPSIS)。首先,在综合考虑风险和收益两大因素的基础上构建技术创新项目的评价指标体系;然后,将层次分析法(AHP)和逼近理想点法(TOPSIS)有机结合起来评价项目的优劣;最后,通过应用实例说明新方法的可行性和有效性。FH-TOPSIS评价方法不仅吸收了AHP法和TOPSIS法的优点,而且可以针对准则权重进行敏感性分析。该方法为技术创新项目风险-收益分析提供了一种新的分析途径。     

Does service learning affect the development of intercultural sensitivity? A study comparing students’ progress in two different methodologies

Numerous studies have highlighted Intercultural Sensitivity (IS) as a key competence in an increasingly multicultural society. This study examined the extent to which a cohort of first year undergraduate students enrolled on the same Didactics course, and in two different training modalities – Service Learning (SL) and non-Service Learning (non-SL) – developed IS. It was based on a quasi-experimental design of repeated pre-test and post-test measures, comparing the two groups. The sample consisted of 233 Spanish students at higher education institutions, and data was collected using the Intercultural Development Inventory (IDI). The SL group displayed significantly higher levels of IS in all factors except in the denial/defence and minimization stages. Results indicated the effectiveness of SL regarding specific subscales within the IDI instrument. The findings add new depth to our understanding regarding which teaching methodologies contribute to the development of IS and to the training of active citizens in Spanish university students. The discussion focuses on the need for intercultural service experiences to promote IS. The results have broad implications for policymakers and educators who are interested in enhancing transformative educational experiences and effective teaching methodologies for developing students’ IS in higher education.     

Rational design of high-quality 2D/3D perovskite heterostructure crystals for record-performance polarization-sensitive photodetection

Polarization-sensitive photodetection is central to optics applications and has been successfully demonstrated in photodetectors of two-dimensional (2D) materials, such as layered hybrid perovskites; however, achieving high polarization sensitivity in such a photodetector remains extremely challenging. Here, for the first time, we demonstrate a high-performance polarization-sensitive photodetector using single-crystalline 2D/3D perovskite heterostructure, namely, (4-AMP)(MA)₂Pb₃Br₁₀/MAPbBr₃ (MA = methylammonium; 4-AMP = 4-(aminomethyl)piperidinium), which exhibits ultrahigh polarization sensitivity up to 17.6 under self-driven mode. To our knowledge, such a high polarization selectivity has surpassed all of the reported perovskite-based devices, and is comparable to, or even better than, the traditional inorganic heterostructure-based photodetectors. Further studies reveal that the built-in electric field formed at the junction can spatially separate the photogenerated electrons and holes, reducing their recombination rate and thus enhancing the performance for polarization-sensitive photodetection. This work provides a new source of polarization-sensitive materials and insights into designing novel optoelectronic devices.     

逆极限空间上移位映射的Ф-混合和弱Ф-敏感

研究了紧致度量空间X上的连续满映射f：X-→X的逆极限空间上移位映射σ：lim（X,f）→lim（X,f）的σ-传递、Ф-混合与弱Ф-敏感性．证明了：σ是Ф-混合的当且仅当f是Ф-混合的,其中空是一个满的Furstenberg族;σ是Ф-传递的当且仅当f是Ф-传递的,σ是弱Ф-敏感的当且仅当f是弱Ф-敏感的,其中Ф是一个Furstenberg．