建立研究生导师有效激励机制的系统思考

研究生导师是研究生培养质量的第一责任人,导师队伍的质量和导师的指导作用直接影响高层次人才培养质量。本文从分析当前研究生导师激励机制的主要设计缺陷入手,阐述了高等学校研究生导师有效激励机制设计的原则,提出了建立研究生导师激励机制的主要途径和方法。     

Factors mediating the effect of gender on ninth‐grade Turkish students' misconceptions concerning electric circuits

This study was designed to identify and analyze possible factors that mediate the effect of gender on ninth‐grade Turkish students' misconceptions concerning electric circuits. A Simple Electric Circuit Concept Test (SECCT), including items with both practical and theoretical contexts, and an Interest‐Experience Questionnaire about Electricity (IEQ) were administered to 1,678 ninth‐grade students (764 male, 914 female) after the completion of a unit on electricity to assess students' misconceptions and interests‐experiences about electricity. Results of the concept test indicated that general performances of the students were relatively low and that many students had misconceptions in interpreting electric circuits. When the data were analyzed using MANOVA and follow‐up ANOVAs, a gender difference for males was observed on the dependent variable of total scores on the 10 practical items; however, there was no significant gender difference on the dependent variable of total scores on the six theoretical items. Moreover, when the same data were analyzed using MANCOVA and follow‐up ANCOVAs, controlling students' age and interest‐experience related to electricity, the observed gender difference was mediated on the total scores on the practical items. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 603–616, 2004     

Instructional Planning in a Centralized School System: Lessons of a Study Among Primary School Teachers in Turkey

The purpose of the study described in this article was to assess teachers' planning practices at the primary-school level in Turkey. Altogether 210 schools were surveyed, a questionnaire was distributed to all teachers in these schools, and 1194 teachers responded to the questionnaire. The results indicated that the main sources of influence on daily and unit plans are teachers' experience, the national curriculum and the course textbooks. In daily planning, teachers assigned the highest level of importance to student characteristics and availability of learning materials, and the lowest level of importance to evaluation procedures and writing objectives. The main problems faced by teachers in planning were: the gap between the national curriculum and the classroom needs, difficulties in using the standard format for preparing plans, shortage of time and resources, insufficient support from principals and inspectors, and lack of cooperation among teachers.     

Pathogenicity of bacterium, Xenorhabdus nematophila isolated from entomopathogenic nematode （Steinernema carpocapsae） and its secretion against Galleria mellonella larvae

INTRODUCTION Entomopathogenic nematodes of the generaSteinernema and Heterorhabditis have been used tocontrol a wide range of agriculturally important insectpests (Kaya and Gaugler, 1993). The mechanism bywhich these nematodes are able to infect and repro-duce in the insect host involves a mutual relationshipbetween the nematode and the symbiotic bacteria,Xenorhabdus spp. and Photorhabdus spp. (Akhurstand Dunphy, 1993; Forst and Nealson, 1996). Poinarand Thomas (1966) established tha…     

An Online Course to Prepare Preservice Teachers to Promote Movement Integration

Previous research has not explored the potential of distance learning to prepare preservice teachers (PCTs) for promoting children’s physical activity. The purpose of this study was to (a) examine the perceptions and experiences of PCTs, inservice classroom teachers, university instructors, and elementary students who were involved in a semester-long distance delivery course that included a service-learning (SL) component with an emphasis on classroom movement integration (MI). Using a qualitative single case study design, interviews, observations, and artifacts (e.g. PCTs’ reflections and academic work) were thematically analyzed. Findings produced three themes including student-centered approach, benefit/importance of physical activity, and connect and reflect. These themes showed that participants’ perceptions and experiences support constructivist-guided SL using a distance delivery design. This study adds to the emerging research base on school-university partnerships to support schools in the implementation of comprehensive school physical activity programming.     

Current status of educational technologies at Omani higher education institutions and their future prospective

The purpose of this research was to address the current and prospective views on educational technology (ET) in order to discover the difficulties and develop its utilization in Omani higher education. The main instruments used to carry out this research were two questionnaires: the faculty members’ questionnaire, and the technical/administrative staff questionnaire. One hundred and fifty-nine participants were involved in the study. They represented all educational technologists who have been with the public and private Omani higher education institutions. The findings show a tendency for future expansion with less expensive technologies and the need for training. Some impediments of ET use were also found. Important recommendations from this study include: the need to support Omani higher education institutions with technical and human resources to increase and activate the use/number of new instructional media and equipment.     

Seminal plasma levels of 15-F2α-isoprostane, malondialdehyde and total homocysteine in normozoospermic and asthenozoospermic males

It has been proposed that oxidative stress plays an important role in male infertility. The aims of this study were to compare seminal plasma levels of 15-F2t-isoprostane (8-iso-PGF2α), malondialdehyde (MDA), and total (sum of free and bound) homocysteine (tHcy) from normozoospermic vs. asthenozoospermic men, and to examine the relationships between tHcy and lipid peroxidation products. The study was a case-control study with a simple random sampling. The case group was consisted of 15 asthenozoospermic males. This group was compared with 15 normozoospermic men. Seminal plasma levels of 15-F2α-isoprostane and tHcy were measured using commercially available enzyme immunoassay (EIA) kits. MDA levels were determined by the thiobarbituric acid (TBA) assay. The Mann-Whitney U test was used to compare two groups. Coefficients of correlation were calculated using Spearman’s correlation analysis. All hypothesis tests were two-tailed with statistical significance assessed at the p value <0.05 level. MDA levels were higher in asthenozoospermic subjects than in control subjects (0.72±0.06 μM vs. 0.40±0.06 μM; p<0.05). No differences were seen in 15-F2α-isoprostane levels in asthenozoospermic subjects and controls (65.00±3.20 pg/ml vs. 58.17±4.12 pg/ml; p>0.05). Interestingly, tHcy levels were to be slightly higher in asthenozoospermic subjects than in controls (6.18±1.17 μM vs. 4.8±0.52 μM). Sperm motility was inversely correlated with seminal plasma 15-F2α-isoprostane and MDA levels, respectively (p<0.05). In summary, seminal plasma levels of 15-F2α-isoprostane and tHcy showed no significant difference between normozoospermic and asthenozoospermic men. Sperm motility was not correlated with seminal plasma levels of tHcy. No relationship was found between tHcy and lipid peroxidation.     

Exploring relationships among TPACK constructs and ICT achievement among trainee teachers

Teaching in the classroom today can no longer sustain the interest of students and be effective if the process involves traditional approach - teachers as sole provider of content information. In recent years technology has played a significant role in transforming education to more progressive and interactive activities. However the use of technology itself does not produce positive results in quality of learning and students’ achievement. Teachers must be competent in subject knowledge, pedagogical skills and technological know-how. The Technological Pedagogical Content Knowledge or TPACK as a conceptual framework can guide teachers to understand the complex relations between the six components of the model. There has been numerous studies on TPACK in international contexts beyond cultural and language boundaries. This paper examined recent studies on TPACK in various countries and reports findings from a study conducted with student teachers in the UAE.     

Exploring Postgraduate students’ challenges and strategy use while writing a master’s thesis in an English-medium University in Kazakhstan

Tertiary Education and Management - With the growth of English medium instruction (EMI) on a global level, the number of multilingual students writing their master’s theses in English is...     

从接受美学看陈应松小说的魅力

接受美学突出读者的作用,强调文学作品是读者和文本共同作用的结果。陈应松的神农架小说在当今文坛引起了很大震动,从接受美学的角度来看,他的作品既满足了读者的期待视野,又打破了期待视野,而这正是神农架小说的魅力之所在。