The bilateral benefits of providing and receiving peer feedback in academic writing across varying L2 proficiency

Although the effectiveness of peer review has been examined, few have tested the joint benefits of providing and receiving feedback features and quality in L2 contexts. The present study investigated variation in key features and quality of feedback provided and received by high and low L2 proficiency students and its benefits on revision in the authentic setting of students experiencing both roles of providing and receiving peer feedback in English academic writing. Analyses on two drafts from 50 students, 1356 idea units of anonymous implementable peer feedback and back-evaluation ratings revealed that the combined effect of providing and receiving feedback on revision was prominent for all students. But the bilateral benefits of providing and receiving feedback features were more significant for high proficiency students, while providing feedback features and quality benefited low proficiency students more. The study implies that students need more bilateral training with both providing and receiving feedback.     

管理会计与控制技术、核心能力建设与企业业绩——基于中国施工企业293个工程项目的调查分析

近年来,国内管理会计与控制技术(MACs)正在企业不断深入推广,但鲜有研究关注MACs实施的作用和效果,本文在293个工程项目问卷调查的基础上,运用结构方程模型分析了现代MACs在企业中的业绩作用和影响机理。研究发现:MACs的运用能直接提升企业财务业绩,并通过核心能力建设间接影响企业财务业绩。MACs在其运用过程中,加强企业核心能力,并通过核心能力的整合为企业带来持续的竞争优势。研究进一步发现,MACs对核心能力及业绩的作用受到控制技术成熟度的影响,控制技术实施越成熟,对核心能力及业绩的影响越明显。鉴于此,本文研究对于正确认识、选择和实施MACs具有重要指导意义。     

领导风格、自我效能感对个体反馈寻求的影响研究

在对反馈寻求行为进行综述的基础上,探讨组织中领导风格对员工反馈寻求的影响机理,并在此基础上探讨员工自我效能感的调节作用。通过173份数据的实证分析表明,价值认知在领导风格与反馈寻求关系中起完全中介作用,自我效能感的调节作用得到验证。     

Improving zero-shot retrieval using dense external expansion

Pseudo-relevance feedback (PRF) is a classical technique to improve search engine retrieval effectiveness, by closing the vocabulary gap between users’ query formulations and the relevant documents. While PRF is typically applied on the same target corpus as the final retrieval, in the past, external expansion techniques have sometimes been applied to obtain a high-quality pseudo-relevant feedback set using the external corpus. However, such external expansion approaches have only been studied for sparse (BoW) retrieval methods, and its effectiveness for recent dense retrieval methods remains under-investigated. Indeed, dense retrieval approaches such as ANCE and ColBERT, which conduct similarity search based on encoded contextualised query and document embeddings, are of increasing importance. Moreover, pseudo-relevance feedback mechanisms have been proposed to further enhance dense retrieval effectiveness. In particular, in this work, we examine the application of dense external expansion to improve zero-shot retrieval effectiveness, i.e. evaluation on corpora without further training. Zero-shot retrieval experiments with six datasets, including two TREC datasets and four BEIR datasets, when applying the MSMARCO passage collection as external corpus, indicate that obtaining external feedback documents using ColBERT can significantly improve NDCG@10 for the sparse retrieval (by upto 28%) and the dense retrieval (by upto 12%). In addition, using ANCE on the external corpus brings upto 30% NDCG@10 improvements for the sparse retrieval and upto 29% for the dense retrieval.     

基于社会文化理论的中国大学英语写作反馈方式重构

目前的中国大学英语写作教学使用的多种反馈方式都有其缺点,该研究在社会文化理论的指导下,以定性研究为主,重构英语课堂的写作反馈方式,并进一步分析在师生互动过程中教师可提供的支架以及学习者的反馈投入。结果显示:(1)教师可提供问题式评价标准和评阅培训、组织师生互动、建立写作档案袋、分享写作技巧和资源等支架;(2)学生对于多元反馈模式充分认可,学生的反馈投入和修改意识增强,写作素养得到提升。     

大学英语写作中教师书面反馈的实效性研究

教师书面反馈是否有效？哪种形式更有效？这一直是二语写作和二语习得研究领域备受争议的话题。本研究对非英语专业4个平行班的60名学生分别给予直接反馈、划线＋代码提示反馈、错误划线反馈、零反馈,通过定性与定量分析,探讨4种模式对大学英语高、中、低不同层次学生的写作水平产生的影响。研究结果发现,书面反馈对非英语专业学生英语写作水平的提高是有成效的,且不同层次（高分组、中分组、低分组）学生写作能力的提高幅度与书面反馈的模式密切相关。     

对计算机辅助教学的思考

本文简述了CAI的两种应用模式,着重讨论了它对传统教学的促进作用。同时也指出了它的不足之处,旨在为科学地运用、开发CAI提供参考。     

念动训练在太极拳教学中的研究分析

在武术教学中不仅需要运动技术的实际操作,心理训练也是一种重要的教学手段。念动训练法是通过技术表象在大脑中的反复描述,从而加速正确的动力定型。本文通过太极拳教学实践的总结,对念动训练法提高教学质量、加快教学进度的积极有效作用进行了论证。     

反馈与控制法在体育游戏教学中的运用研究

通过在体育游戏教学中运用反馈与控制方法的实验研究，论证了采用此方法对于学习体育游戏的动作技术、提高其教学质量的可行性和实效性。     

数字图书馆基于内容的多分辩率颜色特征检索和相关反馈技术

数字图书馆中海量多媒体信息无序激增使基于内容的图像检索技术成为一个研究热点。为了克服只考虑普通颜色特征不考虑颜色的空间分布这一缺点,采用一种多分辨率分块主色法的空间颜色索引技术,并将相关反馈技术融合到多分辨率分块主色算法中,可有效地改善基于颜色特征的查询效果。文章还指出了目前研究中存在的主要问题和今后的研究方向。