论合同法上的情事变更原则

法律上对情事变更原则的适用规定了严格的条件,适用情事变更原则的法律效力主要体现变更合同、解除合同两个方面,而且情事变更与不可抗力、商业风险存在着明显的差别。社会主义市场经济的发展及与国际市场的接轨,决定了情事变更原则应当成为我国合同法上最重要的法律原则之一,它有利于进一步完善我国现行合同法律制度。     

Monitoring and evaluation of loveLife's AIDS prevention and advocacy activities in South Africa, 1999–2001

loveLife is the largest effort ever launched in South Africa to change adolescent sexual behaviour with the aim of reducing the rate of HIV infection among 15–20 year olds by 50%, reducing other STIs, and reducing the incidence of teenage pregnancy. loveLife combines high-powered media awareness and education, development of adolescent-friendly reproductive health services, and outreach and support programmes. The 5-year research and evaluation plan includes a multi-year comprehensive observational study, tracking change in a range of behavioural indicators and in sexual health outcomes. In its first 2 years, loveLife reached more than 4 million youth. Sixty-two percent of youth and 59% of their parents/guardians recognize the brand, while the vast majority of parents (97%) and youth (89%) exposed to loveLife, identified loveLife as being positive. Challenges in the next years are the continued roll out of the programme, and the development of institutional support and behaviour change.     

Evaluation of HIV/AIDS peer education projects in Zambia

This 1998 evaluation assessed the peer education programmes of HIV/AIDS projects run by four non-governmental organisations. A mini-case study approach was used and analysis was based on cross-case itemistic variables. The projects were assessed only in terms of immediate developmental outcomes to target groups rather than on long-term impact. The study concluded the following: (1) The projects had raised community awareness of HIV/AIDS; (2) Basic knowledge of HIV/AIDS was for the most part accurate; (3) There was anecdotal evidence of behavioural changes in terms of partner-reduction as reported by the projects, though the evidence was sometimes conflicting; and (4) There was evidence that certain traditional practices, which contributed to the spread of the virus (e.g. sexual cleansing and scarification), were becoming modified over time. The programmes were also instrumental in protecting human rights and enabling people living with HIV/AIDS to maintain human dignity.     

金刚石锯片使用性能与结合剂之间的关系

加工石材金刚石锯片的性能 ,既取决于金刚石 ,更取决于由金刚石与结合剂适当配合而构成的复合材料的整体性能。不同结合剂的类型、成份配比、相对密度、力学性能 ,均有着自身的特点和各自的适用范围     

计算机公共课教学改革实践探索

在科学技术高度发达的今天 ,为了使计算机公共课教学适应时代的发展 ,教师必须转变教育观念。同时 ,针对计算机教学自身的特点 ,教师应当运用变化的教学手段和灵活多样的教学方法来进行教学     

向城市社区居委会跨越性转变——“城中村”转型发展系列研究之二

“城中村”是我国农村城市化进程中出现的一种特殊现象。积极妥善解决“城中村”问题 ,加快“城中村”转型发展 ,使其真正融入城市 ,是城市化发展的迫切需要 ,也是这些村自身经济和社会发展的迫切需要。“城中村”的转型发展 ,关键在于管理体制的转变。传统的路子是从村委会转为居委会 ,但在全国推进城市社区建设的今天 ,不必要也不应该再走这个弯路 ,而应该直接向城市社区居委会跨越性转变。这种转变是必要的 ,也是可能的。要积极探索和采取切实有效的对策和措施 ,促进“城中村”跨越性转变     

嬗变中的全球化与中国社会关系嬗变

当中国社会纵向穿越全球化横向空间时,两者的关联度迅速提高,并引起中国社会关系及结构发生深刻变化。那就是:一种非国家层面的(国体与政体关系除外)、对中国社会所有累积性关系产生重大影响的、新型"社会契约关系"正在形成。     

广东澄海方言音系记略

本文首次对潮汕方言中的澄海话的语音系统作了描写研究，总结了澄海话的语音特征，并将其与汕头市音、潮州府城音作了比较；最后还根据其内部差异把澄海话划分为四个小片。     

提高开启式2F48型活塞式制冷压缩机性能的研究

本文通过对2F4.8制冷压缩机热力过程的计算机模拟,获得气阀参数对压缩机热力性能影响的数据资料,以改进气阀结构。经过试验证明,可提高压缩机制冷量和性能系数10%以上。