Toward Cranfield-inspired reusability assessment in interactive information retrieval evaluation

Re-using research resources is essential for advancing knowledge and developing repeatable, empirically solid experiments in scientific fields, including interactive information retrieval (IIR). Despite recent efforts on standardizing research re-use and documentation, how to quantitatively measure the reusability of IIR resources still remains an open challenge. Inspired by the reusability evaluations on Cranfield experiments, our work proactively explores the problem of measuring IIR test collection reusability and makes threefold contributions: (1) constructing a novel usefulness-oriented framework with specific analytical methods for evaluating the reusability of IIR test collections consisting of query sets, document/page sets, and sets of task-document usefulness (tuse); (2) explaining the potential impacts of varying IIR-specific factors (e.g. search tasks, sessions, user characteristics) on test collection reusability; (3) proposing actionable methods for building reusable test collections in IIR and thereby amortizing the true cost of user-oriented evaluations. The Cranfield-inspired reusability assessment framework serves as an initial step towards accurately evaluating the reusability of IIR research resources and measuring the reproducibility of IIR evaluation results. It also demonstrates an innovative approach to integrating the insights from individual heterogeneous user studies with the evaluation techniques developed in standardized ad hoc retrieval experiments, which will facilitate the maturation of IIR fields and eventually benefits both sides of research.     

湖北省羽毛球运动员认知特征的比较研究

以湖北省90名羽毛球运动员和在校大学生为研究对象,研究不同运动水平受试者安静状态下心理认知指标特征。结果表明:运动水平相对较高的羽毛球运动员体现出较好的认知能力。     

对中国现行职称外语考试制度改革的思考

文章分析了当前职称外语考试中的弊端和问题，提出了改革和完善职称外语考试的措施，以期使职称外语考试既能科学地选拔人才，又能对外语学习起正确的导向作用。     

大学生篮球技能测试方法改革的实验研究

采用文献法、访谈法、观察法、专家法以及实验法,制定了“篮球技能比赛测试法”。该方法体现了篮球运动固有的集体性、竞争性、对抗性、游戏性、灵活多变性和技术全面性等特点,与广大学生平时篮球活动的内容方式紧密结合,比目前高校普遍采用的单一的篮球技能测试具有更好的可靠性、有效性和客观性,更加节省时间和体现对学习过程的评价,因此能更好地引导广大学生通过篮球运动进行健身娱乐并形成相应的能力和习惯。     

面向对象回归测试的方法

对面向对象软件回归测试的方法进行研究,该方法先对类及受影响的类进行分析,找出这些类,然后从测试用例集中找出覆盖所有受影响的类,最后进行测试用例排序进行执行。这种方法有效、经济和安全。     

PSC用话题的人文化取向及其口语引导性

对照新旧两套国家普通话水平测试用话题,新话题记叙类难度略有提高,但维度关照稍显不足,议论类话题权重还应加大,以使整体布局更趋合理;新话题人文性更强,更容易上口,但对社会生活的关注不够,避谈政治,不利于引导人们关心国家大事,应增加此类话题,以培养参政、议政的公民意识;新话题口语色彩更加明显,但它们只是对话题范围的规定,缺少具体明确的口语化暗示,各地在培训时,还应注意多拟口语色彩浓的子话题,以加强其口语引导性。     

Social and dimensional comparisons in math and verbal test anxiety: Within- and cross-domain relations with achievement and the mediating role of academic self-concept

The present study builds on two strands of research: (1) the recently established generalized internal/external frame of reference (GI/E) model assuming social (comparing one’s achievement in one domain with the achievement of one’s peers in the same domain) and dimensional (comparing one’s achievement in one domain with one’s achievement in another domain) comparison processes in the formation of motivational constructs and self-perceptions, and (2) research on domain-specific facets of test anxiety. Using a sample of 5135 German seventh grade students, it is tested whether and how both comparison processes are involved in the formation of domain-specific facets of test anxiety when considering both the emotionality and worry components of test anxiety, and whether the relation between achievement and test anxiety is mediated through academic self-concept. When applying the GI/E model to test anxiety, the results showed negative relations between achievement and test anxiety within math and verbal (German) domains, but partially positive relations across domains. This pattern of relations emerged for both the worry and emotionality components while stronger achievement relations were found for worry. These findings indicate that dimensional achievement comparison processes operate in the formation of domain-specific test anxiety. Domain-specific academic self-concepts were found to mediate the relations between achievement and test anxiety within and across domains, the mediation being stronger for worry than for emotionality as an outcome. Boys and girls did not differ regarding direct and indirect relations among constructs. Implications for research on dimensional comparison processes and test anxiety are discussed.     

高技术产业研发投入与产业绩效的关系研究

本文利用我国2008年~2013年31个省市、自治区的面板数据,通过单位根检验和Hausman检验确定回归模型的影响形式,同时,利用F检验判定需要拟合的回归模型形式,建立变截距固定效应模型,以分析高科技产业的研发行为对产业绩效的影响。研究结果表明,研发经费的投入能够有效提升产业绩效;然而,研发人员数量的投入却削弱了产业绩效;目前,我国高技术产业的研发投入显现出非均衡状态。最后,基于估计结果我们有针对性地提出了相关的政策建议。     

基于GIS和BEHD的粪肥资源评价及其利用的空间布局优化

畜禽粪便是一种宝贵的肥料资源，但若管理和处理不当，就会成为重要的环境污染源。将畜禽粪便加工成生物有机肥是实现其资源化，促进农业和环境可持续发展的重要途径。由于畜禽粪便的运输距离是有限的，为因此，畜禽粪便资源评价成为实施生物有机肥工程的关键因素。同时，生物有机肥工程的选址又受到自然环境、社会、经济等因素的影响。本文以福建省龙岩市新罗区为案例区域，探讨运用GIS技术和粪肥的盈亏平衡运输距离原理对猪粪资源空间分布特征及生物有机肥厂用工程空间布局评价的方法。根据当地实际情况，以村级行政单位为研究单元，利用GIS的空间分析功能，对潜在粪肥资源分布进行初步研究，在此基础上选取了交通、法律法规、自然环境等指标对生物有机肥厂布局进行综合评价。在GIS技术的支持下，利用猪粪的最经济运输距离原理，对案例区域新罗区的猪粪资源量及分布进行研究，并探讨了生物有机肥厂用工程空间布局方案。结果表明，该区域具有充足的猪粪资源，主要分布在城郊附近，具有可以实施生物有机肥工程的有利条件。根据在粪肥资源评价基础上，综合自然环境、经济、社会等因素，综合评价结果确定6个备选厂址。该研究结果可为管理者制定发展规划和实施生物有机肥工程提供必要的科学依据和理论基础。同时，对于环境管理部门来说，粪肥资源分布研究方法也可以成为识别畜禽粪便污染严重区域的有利工具。     

龙口旧石器遗址调查简报

2010年春季,吉林大学边疆考古研究中心师生对位于湖北省丹江口市习家店镇龙口村的龙口旧石器遗址进行了发掘与调查。发掘的第一层与调查所得的石器包括石核、石片、断块及三类工具共计27件,这些石器以石英岩与片麻岩为主要原料,包括砍砸器、薄刃斧、手镐、手斧、刮削器及雕刻器等石器工具类型。这些遗物的发现与研究不仅是南水北调工程文物保护工作的重要组成部分,而且为这一地区旧石器时代文化传承、社会形态、生业方式、环境变迁、手斧的类型研究等提供了重要的资料佐证。