复杂式单词听写任务对大学英语词汇习得的作用

听写既是一种语言测试方法也是一种教学手段.单词听写作为一种传统的教学手段,曾被广泛地运用于我国外语教学中.本研究改良了传统的单词听写任务,通过实证研究求证该任务对大学英语词汇习得的作用.结果表明,复杂式单词听写任务中,学习者的学习过程具有"曲折反复,总体上升"的路径特点,高水平学习者呈现出持续进步趋势,低水平学习者呈阶...     

写作与二语习得

写作历史性地被认为只是口语的记载,是一种为记录和传播口语而出现的现代发明,并长期被排斥于应用语言学研究的边缘。这种偏见因而造成了二语习得研究对写作的忽视。事实上,写作作为一种语言输出形式,是与口语输出同样重要的有效交际行为,能在二语学习过程中减轻面对面交际给学习者带来的心理压力,并有助于语言知识的内化。网络电子邮件的出现更突显了写作在二语习得中的作用。因此,如何利用写作来促进二语学习应成为二语习得研究的一个重点。     

馆社博弈——图书采购的新模式

针对市场经济给图书馆采购的外部环境带来的变化,文章提出了图书馆改变目前单独依靠经销商的采购方式,与出版社直接建立采购联系的一种新的采购模式.该文阐述了馆社合作的可行性和优势,并进一步阐述了图书馆与出版社合作的方法和对策.参考文献5.     

论留置权的标的

留置权是一种重要的担保物权,对留置权标的性质和范围的认识影响到留置权制度在实践中的适用效果.本文认为,留置权在不可转让物上也可成立,基于效益原则,在不动产上不宜成立留置权.在有价证券之外的其他证券上也可成立留置权,只是可行使权利内容不同.当债权与动产的返还义务基于同一法律关系而生时,在非债务人之物上也可成立留置权.     

A rule induction framework for the determination of representative learning design in skilled performance

Representative learning design provides a framework for the extent to which practice simulates key elements of a performance setting. Improving both the measurement and analysis of representative learning design would allow for the refinement of sports training environments that seek to replicate competition conditions and provide additional context to the evaluation of athlete performance. Using rule induction, this study aimed to develop working models for the determination of high frequency, representative events in Australian Rules football kicking. A sample of 9005 kicks from the 2015 Australian Football League season were categorised and analysed according to the following constraints: type of pressure, kick distance, possession source, time in possession, velocity and kick target. The Apriori algorithm was used to develop two models. The first consisted of 10 rules containing the most commonly occurring constraint sets occurring during the kick in AF, with support values ranging from 0.15 to 0.22. None of the rules contained more than three constraints and confidence values ranged from 0.63 to 0.84. The second model considered ineffective and effective kick outcomes and displayed 70% classification accuracy. This research provides a measurement approach to determine the degree of representativeness of sports practice and is directly applicable to various team sports.     

The application of inertial measurement units and functional principal component analysis to evaluate movement in the forward 3½ pike somersault springboard dive

Based on technological and analytical advances, the capability to more accurately and finitely examine biomechanical and skill characteristics of movement has improved. The purpose of this study was to use Inertial Measurement Units (IMUs) and Functional Principal Components Analysis (fPCA) to examine the role of movement variability (assessed via angular velocity), on 2 divers (1 international level; 1 national) performing the forward 3½ pike somersault dive. Analysis of angular velocity curves during ive-flight identified 5 fPCs, accounting for 96.5% of movement variability. The national diver’s scatter plots and standard deviation of fPC scores illustrated larger magnitudes of angular velocity variability across dive flight. For fPC1 and fPC3, magnitudes of SD variability were 282.6 and 201.5, respectively. The international diver illustrated more consistent angular velocity profiles, with clustering of fPCs scores (e.g., fPC1 & 3 = SD’s of 75.2 & 68.0). To account for lower variability in the international diver, the ability to better coordinate movement sequences and functionally utilise feedback in response to initiation of the somersault position is highlighted. Overall, findings highlight how both IMUs and fPCA can more holistically and finitely examine the biomechanical and skill characteristics of movement sequences with the capability to inform athlete development.     

基于不同政府采购模式下的图书馆文献采购工作研究

政府采购模式包括集中采购模式、分散采购模式和集中采购与分散采购相结合模式。我国政府采购实行集中采购和分散采购相结合。文章对不同政府采购模式下的图书馆文献采购工作进行探索研究。     

专利获取、专利保护、专利商业化与技术创新绩效的作用机制研究

专利在企业生产经营中的重要性日益显现,其作用已从防御性手段转变成战略性工具。通过对118家高新技术企业363份有效问卷调查数据,从资源观的视角,运用结构方程模型实证研究企业专利获取、专利保护、专利商业化与技术创新绩效的作用机制,并重点探讨专利商业化的中介效应。结果表明:专利获取对专利保护、专利商业化具有显著的正向影响,专利保护对专利商业化具有显著的正向影响;专利获取、专利保护、专利商业化与技术创新绩效均具有显著的正向影响;专利商业化在专利获取与技术创新绩效之间起部分中介作用,而在专利保护与技术创新绩效之间则具有完全中介作用。本研究结论不仅拓展了专利管理与技术创新绩效的理论研究领域,同时为我国高新技术企业在开放式创新环境下通过有效的专利管理提升技术创新绩效提供实践指导。     

不同竞合情景下企业知识获取和绩效关系的研究

摘要：本文基于企业间竞争合作关系的程度差异,提出2×2的竞合关系矩阵,并通过实证研究检验了不同竞合组合情境下企业的知识获取、个人关系与合作绩效特征的差异以及它们之间的影响关系。研究结果表明,与其他三个竞合情境相比,企业间高程度的竞争与高程度的合作并存更有利于推动企业进行知识获取,促进个人关系的完善以及合作绩效水平的提高,为企业在转型经济环境下赢得持续竞争优势提供一种新的战略选择视角。     

偶次非球面镜在指纹采集系统中的应用研究

指纹识别的技术实现,其理论基础就是光电数字图像处理,故采集到的指纹图像的质量好坏对后续图像处理的难易至关重要。设计出清晰、畸变小甚至无畸变的指纹识别镜头是制造指纹识别仪的关键。随着光学加工技术的发展,目前非球面镜片已广泛应用于光电产品的各个领域,本文采用普通材质的棱镜及非球面透镜,可使指纹采集系统的畸变控制在0.2%以内。