数字图书馆员素质研究

数字图书馆员素质是数字图书馆建设和发展的关键因素。数字图书馆员的一般素质、必备 素质、特殊素质三个方面是数字图书馆员素质的基本构成。     

Structural Equation Modeling With Unknown Population Distributions: Ridge Generalized Least Squares

This article proposes 2 classes of ridge generalized least squares (GLS) procedures for structural equation modeling (SEM) with unknown population distributions. The weight matrix for the first class of ridge GLS is obtained by combining the sample fourth-order moment matrix with the identity matrix. The weight matrix for the second class is obtained by combining the sample fourth-order moment matrix with its diagonal matrix. Empirical results indicate that, with data from an unknown population distribution, parameter estimates by ridge GLS can be much more accurate than those by either GLS or normal-distribution-based maximum likelihood; and standard errors of the parameter estimates also become more accurate in predicting the empirical ones. Rescaled and adjusted statistics are proposed for overall model evaluation, and they also perform much better than the default statistic following from the GLS method. The use of the ridge GLS procedures is illustrated with a real data set.     

鸡舍内有害气体的来源、危害及控制

本文从鸡舍内部分有害气体的产生和分布 ,有害气体对鸡的健康和生产性能的影响及有害气体的预防与控制等方面的研究现状及发展进行了综合论述。     

“油品分析”课程教学改革与实践--以广东石油化工学院为例

人才培养是大学的根本任务,通过分析"油品分析"课程教学中出现的问题,提出了以企业需求为导向,模块化的课程内容;借助发达的网络资源,信息化教学方式;结合多种考查方式,完善考核机制的教学改革方法,实现对华南地区石油化工行业高素质应用型人才的培养。     

Is teacher education at risk? A tale of two cities – Hong Kong and Macau

Consequences of competition for global university rankings, such as changes in funding modes, have been extensively discussed in the field of higher education. However, few studies have reviewed its implications on knowledge production. This study provides a contextualised method for theorising the implications of this competition on the development of East Asian higher education, specifically teacher education. It identifies the new forms of knowledge being produced in two teacher education institutions in Hong Kong and Macau by reviewing the publications of new recruits in a five-year period. The study considers the following variables: author(s), date and form of publication, abstract, title, keywords, journal name, language, data source, research context and methods. The findings show that the dominant publication trends are towards quantitative research and multiple authors. Psychological research is the most popular area and studies of other long-term issues in teacher education are being marginalised.     

行星际磁云及其相关事件的综合研究

根据SOHO飞船上的LASCO和EIT探测器和GOES卫星的关于太阳活动的观测资料以及ACE和Wind飞船在地球轨道附近关于太阳风等离子体和行星际磁场的观测数据,分析了日冕物质抛射(CME)、行星际磁云和地磁暴的相关性.包括具有地磁效应的晕状CME的日面源区位置分布,日冕物质抛射的中等周期分析,产生地磁暴的行星际参数的阈值等等.作为行星际复杂抛射的一种,首次提出了多重磁云的概念.通过分析观测事例,总结出了多重磁云的一些观测特征,并认为其具有潜在的强大的地磁效应.此外,利用观测资料,研究了激波进入磁云并引起地磁暴的现象.通过建立简单的理论模型,初步分析了激波在穿越磁云的过程中,所能引起的地磁暴的强度的变化.     

Effect of Twinning on Chinese and English Vocabulary Knowledge

Vocabulary knowledge was tested in a native (Cantonese-Chinese) and foreign (English) language in 150 twins and 150 singletons aged 6–11 years, matched on age, gender, grade level, nonverbal intelligence, parents’ education, family income, and number of siblings and household members. The singletons clearly outperformed the twins on the native vocabulary, but this “twinning effect” was much less noticeable for the foreign vocabulary. The effect on English vocabulary was further reduced after exposure to English at home was controlled. Given that these participants learned most of their English in school rather than home, the present findings support the notion that the twinning effect is associated with increased competition for family interaction in twins compared with singletons.     

The role of school leadership in Singapore's future-ready school reform

In this paper, we propose that successful education needs to fulfil three purposes while being cognisant of time and context: (a) learning, (b) lifework and (c) well-being. An education system is successful if it can develop future-ready individuals who will continue to learn beyond graduation, take on future lifework, and thrive in a changing society and environment. The future is context-situated and context-dependent. We have chosen to examine the economic, social and environmental context of Singapore to provide insight on the values, skills and knowledge that are required of future-ready learners according to the three purposes. We have compared the trajectories of other high-income nations with those of Singapore. Traditional teaching and learning practices no longer serve us well in the new realities that emerge. Education practices need to evolve in tandem to meet the demands of the 21st century. The roles that school leaders play include creating teaching and learning environments where these practices can be implemented. In our review of leadership practices and concepts, we have found that it is important for school leaders to question existing assumptions of teaching, learning and leadership practices in order to advance the development of 21st century skills, knowledge, values, and habits in learners.