多媒体课件在课堂教学中遇到的问题和解决方法

多媒体技术已经渗透到了生活的各个方面，以多媒体技术为基础制作的多媒体课件在教学中有着十分广泛的应用。在体会到多媒体技术带来的方便与快捷的同时，我们也应清醒的意识到这一技术尚不成熟，制作和使用时还存在着各种各样的问题。如何保证内容的完整性及教学的灵活性，是我们必须加以解决的问题。     

ASIT—a problem solving strategy for education and eco-friendly sustainable design

There is growing recognition of the role teaching and learning experiences in technology education can contribute to Education for Sustainable Development. It appears, however, that in the Technology Education classroom little or no change has been achieved to the practice of designing and problem solving strategies oriented towards sustainable design. Brainstorming, Brainwriting, SCAMPER, Metaphoric Thinking, Outrageous Thinking, Mind Mapping and other problem-solving strategies used in the classroom could be suitable for eco-design, however, there appears to be little research data on their use. This paper examines and presents the ‘Advanced Systematic Inventive Thinking’ (ASIT) system as an eco-design strategy. ASIT is derived from a more complex engineering-based problem solving strategy known as TRIZ (the Russian acronym for The Theory of the Solution of Inventive Problems). Drawing on Stable’s (in press) call for new approaches to address sustainable design and achieve solutions through Technology Education, this article traces the history of TRIZ and the development of ASIT. It then argues that the ASIT strategy can be an effective methodology to be taught and used in the Technology Education classroom to solve problems in the ‘eco’ or sustainable design context. Several design scenarios have been included to illustrate how ASIT can deliver eco-design solutions to problems. These examples demonstrate the flexibility of the methodology and the diverse range of applications in which ASIT can be applied.     

二溴乙烷标准溶液稳定性研究

用气相色谱对二溴乙烷标准溶液的稳定性进行了研究。本文考查了二溴乙烷1、10、50、100、200及400μg/L 5个浓度的标准溶液的稳定性,实验结果表明：在配制保存得当的条件下可保存2.5个月;溶剂挥发对二溴乙烷标准溶液的浓度影响较大。本文为确定二溴乙烷标准溶液的有效期提供了理论依据。     

城管暴力执法行为的法律规制

城市管理综合执法部门的暴力执法行为一直以来都备受诟病。在暴力执法的现象背后,有着深刻的制度问题根源。要解决这一问题,首先要对城管体制进行改革、对执法程序进行规范、对行政责任制度进行强化。同时,需要提高城管执法人员的素养,加强执法监督。     

泛珠三角合作背景下的区际法律冲突及解决

泛珠三角合作推进了经济合作的繁荣,也会加剧法律冲突从潜在的制度差异转变为现实矛盾的可能性,必须探求新的区际法律冲突的解决路径,在经济一体化程度较高的区域,制定局部的区际统一实体法来解决法律冲突问题既有理论必要也现实可行。     

Critique of p-Values

This paper generalizes the notion of p-value to obtain a system for assessing evidence in favor of an hypothesis. It is not quite a quantification in that evidence is a pair of numbers (the p-value and the p-value with null and alternative interchanged) with evidence for the alternative being claimed when the first number is small and the second is at least moderately large. Traditional significance tests present p-values as a measure of evidence against a theory. This usage is rarely called for since scientists usually wish to accept theories (for the time being) not just not reject them; they are more interested in evidence for a theory. P-values are not just good or bad for this purpose; their efficacy depends on specifics. We find that a single p-value does not measure evidence for a simple hypothesis relative to a simple alternative, but consideration of both p-values leads to a satisfactory theory. This consideration does not, in general, extend to composite hypotheses since there, best evidence calls for optimization of a bivariate objective function. But in some cases, notably one sided tests for the exponential family, the optimization can be solved, and a single p-value does provide an appealing measure of best evidence for a hypothesis. One possible extension of this theory is proposed and illustrated with a practical safety analysis problem involving the difference of two random variables.     

我国地方政府债务治理:近期目标与长效机制

我国地方政府债务问题凸显,地方融资平台公司及其债务只是其现阶段的形式体现,深层次的原因应从地方财政资金的供给和需求两个方面探寻。针对我国地方政府债务现状,先"治"后"理"是基本逻辑主线,近期目标是清理地方融资平台及其债务,但从长计议则应构建加强地方政府财力建设、规范地方债务管理的长效机制。     

福利经济学对农民均衡分享经济发展成果诠释

运用福利经济学原理解说农民如何分享经济发展成果,并提出解决路径,如农民市民化、农民集约化、农民科技化、农民权利常规化等,力求寻找解决农民问题的新路径,期望为农民分丰经济发展成果提供理论借鉴.     

非公经济融资现状及破解的有效途径——以江苏省扬州市为例

融资性瓶颈一直是制约非公经济发展的主要障碍.本文通过对江苏银行扬州分行(原扬州市商业银行)对非公经济发展支持实践的回顾,旨在寻求缓解非公经济发展融资难的途径.     

脉压体制下的雷达发射机上变频器

本文根据脉冲压缩技术对雷达发射机的辐相特性要求，分析了传统上变频器方案的缺点，提出利用锁相环方案解决信号的幅相失真、保证雷达对目标的检测性能的方案。