Feedback in Hong Kong secondary writing classrooms: Assessment for learning or assessment of learning?

While much of L2 teacher feedback research has focused on the effectiveness of feedback and its impact on student revision and writing, little has been done to examine teachers’ feedback in the larger classroom context of teaching and learning to ascertain the functions teacher feedback serves from an assessment-for-learning perspective. Using multiple sources of data from 26 secondary teachers’ written feedback to 174 student texts, interviews with six of the teachers and 18 students, the present study investigates the nature of teacher feedback and the functions it serves in the teaching-learning-assessment process in the writing classroom. The findings show that teacher feedback focuses largely on assessing writing summatively, primarily serving the purpose of assessment of learning, rather than assessment for learning – i.e., using feedback as a pedagogical tool for improving the teaching and learning of writing. The study calls for greater attention to the implementation of assessment for learning in the writing classroom, and specifically the use of feedback for formative purposes.     

英语听力学习动机与元认知策略相关性研究

该研究探究了网络环境下大学生英语听力学习动机与元认知策略的相关性,对125名高校非英语专业学生进行了问卷调查与访谈,发现如下:1)英语学习者的学习动机普遍较高,内在动机高于外在动机;学习者偏爱使用集中注意策略、解决问题策略,最少使用计划和评价策略;2)英语学习者的内在动机与解决问题策略、集中注意策略呈显著正相关关系;3)高动机组学习者与低动机组只在解决问题策略的使用上存在显著差异。进而建议教师应注重培养学习者有效运用元认知策略的能力,帮助学习者保持较高的动机水平,引导学习者从被动完成听力任务的客体转变为主动探究听力过程的主体。     

浅谈LP-空间与lp-空间

LP -空间与lp -空间的性质会随着P>0 的取值区间的变化而显示出很大的差异 .通过对比研究二者的性质 ,从而找出最本质、最主要的认识框架     

水稻颖壳异常发育突变体Oryza sativa extraordinary glume 1 (Oseg 1) 的遗传与基因初定位分析

A rice mutant with Yaponica 9522 cultivar background Oryza sativa extraordinary glume 1 （Oseg 1） was identified from the M2 mutant pool mutagenized by ^60Co γ-ray. Compared with wild type plants, Oseg 1 developed longer empty glumes and rudimentary glumes. In some Oseg 1 mutants, the number of stamens of flowers was reduced and leaf-like lodicules occurred, and excessive lemma/palea-like organ could be observed in some mutant spikelets. This indicated that OsEG1 could regulate the development of rudimentary glumes, empty glumes, lemma/palea, lodicules, and stamens. Genetic analysis indicated that Oseg 1 came from a single recessive genetic locus. To clone OsEG1 gene, F2 population was constructed by a cross between Oseg 1 （Japonica） and Guangluai4 （Indica）. Using map-based cloning approach, OsEG1 was mapped on chromosome 4, between INDEL marker OS407 and WHM0466 with genetic distance of 2.0 cm and 1.0 cm, respectively. These results are useful for further cloning and functional analysis of the OsEG1 gene.     

二语心理词汇与词汇学习策略的相关性研究

通过词汇联想测试和词汇学习策略的使用情况调查,并进行两者的相关分析,探讨了中国英语学习者的二语心理词汇与词汇学习策略的关系。结果表明,两者在很多方面呈现复杂而显著的联系,这对二语词汇教学有一定的指导意义。     

国际公约与我国《海商法》对提单之调整

提单是国际海上货物运输中最重要的单据。在履行提单的权利义务方面 ,主要的法律问题集中在承运人的责任方面。从本世纪 2 0年代到现在 ,承运人的责任制度发生过并正在发生着重大变化 ,而这些发展变化主要是通过《海牙规则》、《维斯比规则》与《汉堡规则》三个国际公约表现出来的。我国不是三大国际公约的缔约国 ,但我国的《海商法》吸收并反映了公约对提单的法律调整的有关规定。     

Relationship Between Intercultural Communicative Competence and L2-Learning Motivation of Iranian EFL Learners

In today's interconnected multicultural world, citizens' differential levels of intercultural communicative competence (ICC) can play an important role in the amount of enthusiasm, time, and efforts they invest in second or foreign language (L2) communication and learning. ICC has recently found its way into L2 theory and research. This study attempted to first develop a measure of ICC and then explore the relationship between Iranian L2 learners' ICC and their L2 learning motivation, on the one hand, and between gender and the development of ICC, on the other. The participants were 180 B.A. English Literature/Translation and M.A. TEFL (Teaching English as a Foreign Language) students at several Iranian universities. A test battery including the final version of the ICC questionnaire and an L2-learning motivation questionnaire adapted from Gardner's attitude/motivation test battery was then administered to a random selection of 70 students (M = 30 and F = 40). The correlation results indicated that there was a strong, positive relationship between L2 learners' ICC and L2-learning motivation. Meanwhile, t-test results demonstrated that Iranian female and male L2 learners did not possess different levels of ICC. The finding related to the ICC and motivation association suggests that an account of ICC development be incorporated into L2 teachers' classroom agendas at different educational levels.     

The sidestep cutting manoeuvre requires exertion of lumbosacral lateral flexion torque to avoid excessive pelvic obliquity

During sidestep cutting, the pelvis is supported only on one side; this affects the athlete’s posture. This study investigated the mechanism to avoid excessive pelvic obliquity during sidestep cutting. Ten physically active men performed sidestep cutting with maximal effort, and we captured the kinematics and kinetics with force platforms and an eight-camera motion capture system. Our results indicated that the stance hip exerted little abduction torque; however, lumbosacral lateral flexion torque was exerted towards the free-leg side (peak value: 3.39 ± 0.91 N m/kg). Although bilateral hip joint forces acted to drop the free-leg side of the pelvis, the net torque around pelvic elevation/drop axis was nearly zero during the entire stance phase and the change in the angular momentum around the pelvic elevation/drop axis from touchdown to toe-off was negligible (?0.004 ± 0.003 N m s/kg). The integrated components of lateral flexor for elevating the free-leg side of the pelvis (0.220 ± 0.072 N m s/kg) were significantly larger than any other integrated components, which were all negligible (<0.010 N m s/kg). Thus, sidestep cutting requires the lumbosacral lateral flexion torque exertion to neutralise the passive action that drops the free-leg side of the pelvis.     

离体玉米芽尖中酚类物质产生的影响因素

玉米芽尖分生组织培养过程中,酚类物质的产生与培养芽尖的基石莳背景明显相关,培养基的Ｐ迂低或过高均会加剧芽尖的酚类物质产生。蔗糖浓度在２０￣４０％范围内变化和使用活性炭对芽尖产生酚类物质的影响不明显。     

蓝靛果忍冬花粉形态研究

利用扫描电子显微镜首次对蓝靛果忍冬的花粉进行观察分析,并详细地描述了其花粉的外部形态,为东北地区蓝靛果忍冬的分类提供基础性依据.结果表明:蓝靛果忍冬花粉粒大小、形态和外壁纹饰可作为分种参考.