高强混凝土高温性能研究进展

对近年来高强混凝土高温性能的研究成果进行了综述与分析,包括热工性、高温下和高温后力学性能以及高强高性能混凝土的爆裂性能。其中,高强混凝土热工性能方面的研究成果较少且研究结果离散性较大;高强混凝土力学性能方面的研究主要集中于抗压强度、抗拉强度、变形性能、弹性模量、泊松比、应力 应变关系等,而对高强混凝土结构、构件高温力学性能和温度场分析方面的研究较少;高强高性能混凝土爆裂方面的研究多集中于爆裂规律和爆裂抑制措施,对爆裂机理和微观结构的研究较少。本文分别从3个方面指出了高强混凝土高温性能研究中存在的问题和今后的研究方向,为深入研究高强混凝土的高温性能提供参考。     

高职人才培养模式评析及启示

创新高职人才培养模式是解决目前高职人才培养和社会脱节问题的必然选择。在充分借鉴国内外成功经验的基础上,结合我国的国情,创新高职人才培养模式要走多元化道路,要正确处理好引进和本土化的关系,要体现"技术教育"特点,同时要加强"双师型"师资队伍建设。     

未成年案件刑事辩护专业化路径选择

近年,我国少年司法制度建设虽然具有突破性的发展,但是处于社会发展的重要战略转折期社会矛盾凸显,面对未成年人犯罪呈现的新特点,而与之相配套的少年司法建设无论是从理论上还是从制度建设上都略显滞后。显然,少年刑事辩护的专业化建设是十分必要的,其发展程度也是司法建设质量的重要指标。鉴于此,通过分析未成年案件刑事辩护发展现状,提出未成年案件刑事辩护专业化建设的发展策略。     

Foreign aid and domestic taxation: multiple sources,one conclusion

There are influential studies that argue that foreign aid displaces domestic tax revenue when it is given in the form of grants. These claims are based on data that are deeply problematic: several different sources are amalgamated into one dataset, with no apparent checks on compatibility. In this article, a variety of econometric strategies are used to overcome these issues of data quality. The resulting weight of evidence points to a modest but positive effect on the part of foreign aid generally on domestic tax revenue. Fears over a negative effect for aid grants appear unwarranted, and are accounted for by the inappropriate use of data or endogeneity issues.     

Can the New Deal solve the old problem of aid orphans and darlings? Aid effectiveness in fragile states

The New Deal for Engagement in Fragile States marks an important ideological shift in development co‐operation. Despite this progress, no practical response has been found to the problem of aid co‐ordination. This article traces the issue of aid allocation and highlights lessons from the ‘aid orphan’ and ‘aid darling’ debate. It examines the significant, yet under‐reported, policy process of the New Deal. It argues that deeper engagement with the concept of trust, and renewed focus on the political elements of the agreement, should be key priorities for the International Dialogue on Peacebuilding and Statebuilding.     

早熟高粱主要产量性状的配合力分析

对9个高粱品种的20个早熟高产组合的8个农艺性状进行了方差和配合力分析,结果表明：12A×三尺三这一组合的小区产量和亲本的一般配合力均为最高值,而特殊配合力效应并非最高。说明在高产组合育种中,应注重亲本自身性状的优良,一般配合力和特殊配合力都要高,而一般配合力较特殊配合力更显得重要。     

高校图书馆与新时期信息素质教育

信息是当今社会最重要的资源之一,人们对信息的需求正呈现出多层次、多样化的形式。在新的信息环境下,高校图书馆应与时俱进地积极转变观念,拓展教学内容,规范相关要求,在信息素质教育中作出突出的贡献。     

An Empirical Test of a Neo-Malthusian Theory of Fertility Change

Some neo-Malthusians regard fertility as being kept in check by scarcities and constraints and, conversely, as being raised by economic prosperity. Since out-migration to developed countries and the receipt of food aid from developed countries relax the constraints imposed by a country’s carrying capacity, both will have a positive effect on fertility rates in developing countries. Moreover, better economic prospects will also raise fertility, all other things equal. This article provides an empirical test of these hypotheses derived from a neo-Malthusian theory of fertility change. The results fail to confirm the theory and often contradict it.

The nutrition-related information seeking behaviours and attitudes of pregnant women with a high BMI: A qualitative study

BackgroundThe prevalence of high body mass index is increasing amongst women of child bearing age. High maternal body mass index has ramifications for both mother and baby including increased health risks from gestational diabetes mellitus, caesarean section and stillbirth. Despite the increasing prevalence of high maternal body mass index little is known of the experiences of these women regarding nutrition information access and use during the antenatal period.MethodsA qualitative study using individual interviews was undertaken at a tertiary hospital in south-eastern Australia. Twenty-Eight women with a body mass index ≥30 kg/m² participated. Interviews were audio recorded, transcribed, cross-checked for consistency and entered into a word processing document for further scrutiny. Data was analysed using interpretative phenomenological analysis (IPA). In any phenomenological study the researcher’s objective is to elicit the participant’s views on their lived experiences.FindingsThree major themes emerged: (1) Nutrition-related information attainment; (2) Nutrition-related information management; (3) Nutrition-related information needs and wants.ConclusionThe findings from this study may assist the future development and dissemination of nutrition-related information for pregnant women with a high body mass index. Women want more individualised support regarding nutritional requirements during pregnancy.     

Gender,Occupation, and Promotion to Management in the Nonprofit Sector

Although one can assume the work values within nonprofit organizations promote gender equality in promotion decisions, there is preliminary evidence that in the nonprofit sector women are underrepresented in higher management positions. Whereas the mechanisms resulting in underrepresentation of women in management have been studied extensively in for‐profit organizations, little is known about these mechanisms in nonprofit organizations. Is gender in nonprofit organizations—even given the underlying values of these organizations—an impediment to attaining a management position? This article presents a case study of employment patterns within the Dutch section of the humanitarian INGO Médecins Sans Frontières and focuses particularly on the effects of gender and occupation on transitions to management. The case study organization represents a “critical case” because the nature of this organization's work environment can be expected to result in a relatively high percentage of women in management. Employee records (N = 2,247) were analyzed using event history models. We found that women made the transition to management less rapidly than men, even when controlling for factors like age, previous work experience, and nationality. However, gender differences were completely explained by occupation. Those employees in female‐dominated occupations (in this case, medical personnel such as nurses) had a lower promotion‐to‐management rate than those in male‐dominated occupations (in this case, nonmedical personnel such as financial officers), irrespective of their gender. This case study highlights the importance to nonprofit management research of studying the effects of occupational sex segregation on promotion.