会议筹备的方案与规划

对以往4届会议的人数变动状况进行纵横向分析,建立比例模型,为预定宾馆客房提供了量化信息;利用线性规划模型,在尽量满足代表要求的条件下,选择数目最少的宾馆,并且距离比较靠近;运用排列组合方法拟定6种会议室租借方案,通过线性规划和结果调整,并列表分析比较,选定总费用最少的会议室与客车的租用方案。     

会议筹备的优化模型及方案

根据往届与会情况,运用比例方法预估实际与会人数,然后以宾馆数量为目标函数,以与会人员的住房要求为约束条件,运用LINGO软件求解,得到最少的宾馆数;考虑租借会议室的方案,按费用最少建立目标函数,同时要能容纳与会人数,运用LINGO软件求解得到结果;考虑接送代表,根据大多数代表回执要求分配宾馆入住,由入住人数确定乘车人数,以租车费用为目标,得到费用最小的租车方案。     

Meeting the highly qualified teachers challenge

The moulding of the future of a nation depends on the teachers and the education they provide in schools. Research evidence from the US. National Assessment of Educational Progress (NAEP) confirms this to be the case. Quantitative analysis of data indicates that measures associated with pre-service teacher preparation are by far the strongest correlates of student achievement (Darling-Hammond 2000). The research report of Wilson, Floden, and Ferrini-Mundy (2001) also suggests a strong relationship between teacher preparation and teacher effectiveness. Other research studies similarly indicate that differences in teacher quality are the most crucial for student achievement when compared with variables such as class size, streaming, or the amount of homework (Anderson & Helms 2001; Mendro 1998; Powell & Anderson 2002; Rivkin, Hanushek & Kain 2001; Saunders & Horn 1994; Strong & Tucker 2000) as possible contributory factors. In the pursuit of improved student achievement, we therefore need to examine seriously the role of teacher variables, ranging from teacher qualifications and their subject matter knowledge, to what motivates them to take up teaching as a career and as a consequence, how they teach in classrooms.     

“湿”环境下网络广告的革命

“湿”环境催生了新的网络广告形式——“湿”广告,其主要凭借消费者在网络社区中主动参与分享产品的信息,或贡献智慧改进与经营产品,以获得认同而达到发散型推广的目的。与传统网络广告形式相比,“湿”广告公信力更高、更容易实现对消费者的精准定位、更具创造力与亲和力,是一场真正的广告革命。     

王皓直板横打技战术特点的确立过程及启示

摘要：研究目的：直板横打技术为日渐衰弱的直板打法注入了新的活力,对王皓直板横打及战术体系的全过程进行梳理和挖掘,旨在为竞技乒乓球直板选手的训练、比赛提供客观的借鉴和思考。研究方法：文献资料法、专家访谈法和个案研究法对王皓直板横打的训练过程进行分析、研究。研究结论：只有技术不断创新,才能保持在世界乒坛的领先地位;创新需要教练员、运动员和科研人员的团队合作;教练员在技术创新中起着主动作用。技术打法无定式,教练员在决策运动员的技术风格时,要遵循运动员的个人特点。     

新型超分子凝胶材料

作为新型的凝胶材料,超分子凝胶的制备受到越来越多的关注.基于超分子自组装的方法,制备了响应性超分子凝胶、氢键组装超分子凝胶、有机无机杂化超分子凝胶、主客体超分子凝胶等凝胶材料.文章主要综述了这几种超分子凝胶的制备策略,并对其进一步研究进行了展望.     

美国教师教育新动向——兼析《我们的未来,我们的教师》

美国教师教育面临的诸多问题既为教师培养方案改革带来了新的挑战,也创造了新的机遇。美国教育部最新发布的《我们的未来,我们的教师：奥巴马政府教师教育改革与提高计划》,旨在通过建立制度报告与各州问责、总统教学激励以及少数民族服务机构的目标性投资,来遴选、培养、补充、支持、留任、发展教师,以将教师的资质提升到与教学这一伟大专业相匹配的水平和高度。     

Using Mixed-Methods to Examine Teachers' Attitudes to Educational Change: The case of the Skills for Life strategy for improving adult literacy and numeracy skills in England

This paper reports on a longitudinal study that examines how a national reform introduced in England in the field of adult literacy, language, and numeracy is affecting teachers. The paper focuses on the use of a mixed methodology to explore teachers' attitudes to the reform and how these change over time. The quantitative strand includes the construction and use of a Likert-type instrument for measuring the attitudes of a panel of 1,500 teachers. The qualitative strand builds on the quantitative results and includes focus groups and in-depth interviews with a subsample of teachers in the panel. As the study is still in its initial phase, the purpose is not to present findings, but to discuss how quantitative and qualitative evidence can be combined in evaluation research.     

金纳米粒子的制备方法

金纳米粒子(AuNPs),其直径在1¹00 nm范围内,具有很好的稳定性、灵敏的光学特性、易进行表面修饰以及良好的生物相容性.本文重点介绍了AuNPs的制备发展过程、制备方法、形貌和应用前景.     

Facilitating early career leadership through pre‐service training

Current research indicates that new teachers want to be involved in school‐level decision‐making. Upon entering the profession, many novice teachers are surprised and disillusioned to find they have considerably less involvement and influence than expected. Based on strategies that have been developed, revised, and refined over a number of years in two teacher preparation programs in the eastern US, the current discussion proposes that teacher preparation programs incorporate training in school‐based management as a means to better prepare new teachers for the political realities of the profession. Intended for teacher educators, this paper describes how the research component common to most teacher education programs can be used as a venue to train teacher candidates in school‐based management.