Promoting the development of a conceptual change model of science instruction in prospective secondary biology teachers

This paper reports a study of the impact of an initial teacher education programme on the development of a conceptual change model of instruction in prospective biology teachers. Analysis of the performance in teaching practice indicates that the subjects achieved significant improvement in the various skills related to this instruction model. However, mastery of these skills was not evident, especially in the response to pupils' alternative conceptions, the presentation of chalkboard layout, the use of high order questions to probe understanding and facilitate concept development, and the conduct of interactive learning activities. This can be related to the subjects' lack of teaching experience and inadequate subject knowledge, the passive learning attitude of pupils, constraints in time and resources, and the non-supportive conditions in schools.     

Predicting teachers' intentions to implement school-based assessment using the theory of planned behaviour

The theory of planned behaviour (TPB) was used to explore the Hong Kong teachers' intentions to implement school-based assessment (SBA) and the predictors of those intentions. A total of 280 teachers from Hong Kong secondary schools who had been involved in SBA were surveyed. Rasch-calibrated teacher measures were calculated for each of the 6 variables – affective and instrumental attitude, subjective norm, self-efficacy, knowledge, and intention – regarding SBA. The results of hierarchical multiple regression analysis revealed that instrumental attitude and self-efficacy made significant contributions to predicting intentions to implement SBA. These 2 predictors explained 55.2% of the variance in intentions. The other 3 variables, that is, affective attitude, subject norm, and knowledge, did not have significant predictive power on the formation of intentions to implement SBA. Possible explanations and implications of the findings are discussed.     

基于教育信息化的农村中小学教师校本培训现状调查及策略——以鄂西北十堰市农村中小学为例

教育信息化程度的提高为农村中小学的校本培训提供了新的机遇,为农村中小学的校本培训模式的多样化创造了有利条件。文章以十堰市为例调查了农村中小学利用教育信息化资源开展校本培训的现状。针对当前存在的问题提出了相应的对策,并探讨了基于教育信息化的校本培训模式,以便促进农村地区中小学教师素质的提高。     

魔芋中葡甘聚糖的应用研究

采用贵州花魔芋为元材料提取葡甘聚糖,然后将其应用在果冻制作中.将魔芋胶、卡拉胶、柠檬酸、蔗糖、色素、香精等进行正交试验,改变各主要物质用量,最终得出魔芋果冻制作的最佳工艺配方为:卡拉胶1％、魔芋胶0.2％-0.3％、磷酸钙0.2％-0.3％、柠檬酸0.30％-0.35％、柠檬酸钠0.2％、蔗糖8％、余量为水.最佳工艺配方制作的魔芋果冻口感好、低能量,可以考虑市场推广,为贵州魔芋的开发应用提供一定的理论基础.     

Dissolved oxygen sensor based on sol-gel matrix doped with tris(2,2’-bipyridine)ruthenium dichloride

To establish a immobilization method of oxygen sensitive dye, a dissolved oxygen sensor based on a sol-gel matrix doped with ruthenium complex ([Ru(bpy)3]2+) as the oxygen-sensitive material is reported. The results indicate that the I0 /I100 value of the [Ru(bpy)3]2+-doped in tetraethylorthosilane (TEOS) composite films are estimated to be 10.6, where I0 and I100 correspond to the detected fluorescence intensities in pure nitrogen saturated water and pure oxygen saturated water, respectively. Also, the Stern-Volmer plot shows a very good linearity at low dissolved oxygen concentrations. The response time of the composite films is 5 s upon switching from nitrogen saturated water to oxygen saturated water and 10 s from oxygen saturated water to nitrogen saturated water. The dissolved oxygen sensors based on the ruthenium complex/TEOS composite films exhibit greater sensitivity, stability and faster response time as compared to the existing ones. Furthermore, the thin films possess greatly minimized dye leaching effect.     

《全元文》辑佚六篇

《全元文》在整理过程中未充分利用地方金石志,使不少理应收录的文献仍散罗其中。文章从地方石刻材料中辑得《全元文》失收之文六篇胪列于下,以补其阙。     

德为人先学为人师行为世范——杨叔子院士访谈录

中国科学院院士杨叔子先生是我国著名的机械工程专业科学家,也是高等教育管理方面的杰出专家,从事教育工作近60载,不仅发表了数百篇科学技术论文和教育管理类论文,还发表了上千篇诗词、散文、序函类文章,是我国大学文化素质教育的首倡者和有力推动者之一.欣闻杨院士今年80华诞之际,由杨院士的数十名弟子选编的《杨叔子槛外诗文选》、《杨叔子教育雏论选》、《杨叔子科技论文选》、《杨叔子散文序函类文选》四种文集由华中科技大学出版社全部出齐.江苏大学杂志社社长带领本刊编辑趁赴武昌开会之际,特约请杨院士就其文集中所涉及的有关问题进行了访谈.访谈中杨院士对青年学者教育的核心思想、培养德才兼备的研究生、进行通识教育与文化素质教育中的教师职责、青年教师师德建设等问题进行了精辟的讲解.杨院士指出,高校要构建适合青年教师成长、发展的良好环境,营造一种尊重知识、尊重人才的氛围,青年教师也要树立正确的人生观、世界观和价值观,德为人先,学为人师,行为世范.     

从推普宣传口号看我国语言规划的特点

语言规划不仅是一个内涵丰富的理论与实践体系,更是一个包含了众多冲突与纷争的矛盾统一体。它既体现了当今的理论纷争,又牵涉到具体语言政策制定和制度设置的重大问题。推普宣传口号的目的自然是推广宣传普通话,语言规划的丰富内涵不可能由它全部承担。但通过这一角度进行观察和分析,我们总能发现语言观念的局限性和一些实践中才会出现的问题,从而以积极的态度设计政策,谋求参与来不断完善语言规划体系。     

GLABROUS INFLORESCENCE STEMS regulates trichome branching by genetically interacting with SIM in Arabidopsis

Arabidopsis trichomes are large branched single cells that protrude from the epidermis. The first morphological indication of trichome development is an increase in nuclear content resulting from an initial cycle of endoreduplication. Our previous study has shown that the C2H2 zinc finger protein GLABROUS INFLORESCENCE STEMS (GIS) is required for trichome initiation in the inflorescence organ and for trichome branching in response to gibberellic acid signaling, although GIS gene does not play a direct role in regulating trichome cell division. Here, we describe a novel role of GIS, controlling trichome cell division indirectly by interacting genetically with a key endoreduplication regulator SIAMESE (SIM). Our molecular and genetic studies have shown that GIS might indireclty control cell division and trichome branching by acting downstream of SIM. A loss of function mutation of SIM signficantly reduced the expression of GIS. Futhermore, the overexpression of GIS rescued the trichome cluster cell phenotypes of sim mutant. The gain or loss of function of GIS had no significant effect on the expression of SIM. These results suggest that GIS may play an indirect role in regulating trichome cell division by genetically interacting with SIM.     

浅议高职英语教师人文素质的提升

近年来,随着社会经济高速发展和社会对人才的需求,高职院校越来越重视学生的人文素质教育,加强了对学生进行人文意识、人文思想、人文知识等方面强化教育,由于教师是实施人文素质教育的关键,因此,教师人文素养的提升也引起专家及众多学者的重视.基于此,通过对高职院校英语教师人文素质教育现状的分析,论述了如何提升高职院校英语教师的人文素质水平.