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。     

京派的民族想象及人文意义——以沈从文为中心

京派在挤压的都市文明之外,为我们展示了淳朴的乡土风景画、风俗画、风情画,对人与自然和谐关系的理想重构显示了京派另类"民族想象"的独异之处,表明了它与五四新文学对接中的反叛。沈从文的创作分乡土抒情、都市讽刺、民族或民间传奇的重叙三部分,他在多重文化冲突中张扬文化综合和重构,其对民族文化精神内涵的开掘标志了京派对民族性格和心理探求的深度。但对于落后的农耕文明下的乡土中国,京派呈露了不合时宜的奢侈。这也正是中国现代化的必然文化境遇。     

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。     

台湾高中第二外语教育现状与发展方向

今日,国际化的定义非常多样化,也逐渐在学校教育中扎根、发展。教育部门和学校一方面要不断推进英语教育的推广与改进,另一方面也要思考在多文化、多语言社会产生的"内部国际化"课题。在台湾,提早实施英语教育、推进高中第二外语教育、推行中小学及高中的国际教育政策等皆是教育改革重要部分。作为教育改革中的重要环节,20世纪90年代后期开始积极推动的高中第二外语教育已经取得了一定成效,但依旧存在专业教师培养与大学课程的衔接等方面问题。     

论唐太宗与玄奘及唯识宗

佛教作为中国传统文化当中不可分割的一部分时至唐朝也进入了鼎盛时期。作为"明君"的唐太宗没有从个人情感的角度出发看待佛教,而是从一种治国之策的维度对佛教进行合理的管控。玄奘法师对太宗的影响在一定程度上使其采取了更为和缓的佛教政策,正因如此唯识宗也在此期间轰动一时。     

明末徽派版画对武林版画的影响及武林版画新的风格确立

文章例举明代徽州黄氏刻工为主的徽州刻工移居武林的情况,论证明代万历年间徽派版画对武林版画的影响以及武林版画在吸收徽派版画的基础上所形成的新的风格样式。     

Evaluating the benefit from the help of the parent–teacher association to child performance

The contribution of parental involvement in the parent–teacher association (PTA) to schoolchildren's performance is an issue for evaluation research. To resolve the issue, it is reasonable to differentiate people who benefit and others who do not benefit from the involvement. Such differentiation relied on survey data from 289 pairs of Hong Kong Chinese parents and their children between Grade 4 and Grade 9. It revealed that only 28.8% of the parent–child pairs had their child performance benefiting from the help of parent–teacher associations (in terms of a standardized effect of .2). Factors predictive of this minority subgroup were the child's grade and having a single parent. These factors tend to identify the need for help from parent–teacher associations, which can be a consideration for planning effective help from the associations.     

Stepping stones: Principal career paths and school outcomes

More than one out of every five principals leaves their school each year. In some cases, these career changes are driven by the choices of district leadership. In other cases, principals initiate the move, often demonstrating preferences to work in schools with higher achieving students from more advantaged socioeconomic backgrounds. Principals often use schools with many poor or low-achieving students as stepping stones to what they view as more desirable assignments. We use longitudinal data from one large urban school district to study the relationship between principal turnover and school outcomes. We find that principal turnover is, on average, detrimental to school performance. Frequent turnover of school leadership results in lower teacher retention and lower student achievement gains. Leadership changes are particularly harmful for high poverty schools, low-achieving schools, and schools with many inexperienced teachers. These schools not only suffer from high rates of principal turnover but are also unable to attract experienced successors. The negative effect of leadership changes can be mitigated when vacancies are filled by individuals with prior experience leading other schools. However, the majority of new principals in high poverty and low-performing schools lack prior leadership experience and leave when more attractive positions become available in other schools.     

关于现代企业储备人才的培养研究——黄商特训：让员工快速成长

现代企业的竞争是企业服务的竞争、企业内涵的竞争、企业文化的竞争，归根结底是企业人才的竞争。走规模经济、走文化经济是我国企业发展的方向。黄商人坚持以市场为导向，专注于商业连锁发展，为至今还处在瓶颈期的企业提供了较好的借鉴作用，其具有特色的员工培训模式给现代企业也提供了一定的参考作用。