The Technical Quality of Performance Assessments: Standard Errors of Percents of Pupils Reaching Standards     

Wendy M. Yen 《Educational Measurement》1997,16(3):5-15

How accurate is the reported percent of students’reaching standards at the school level? How are standard errors for these statistics computed? How do estimates vary with choice of generalizability model?  相似文献   

Idea generation in biomedical engineering courses using Design Heuristics     

Jin Woo Lee  Anastasia Ostrowski  Aileen Huang-Saad  Colleen M. Seifert 《European Journal of Engineering Education》2019,44(3):360-378

ABSTRACT

With increasing demand for improved medical equipment and healthcare, next-generation biomedical engineers need strong design skills. Equipping biomedical engineering students with tools for idea generation and development can increase student design success. Design Heuristics are an ideation tool developed through empirical studies of product designs. While identified in the mechanical engineering space, Design Heuristics may be applicable in biomedical engineering design. In our study, we implemented a Design Heuristics session during upper-level undergraduate and first-year graduate biomedical engineering design courses. We examined the applicability of Design Heuristics within individual and team concept generation contexts. The findings demonstrated that biomedical engineering students were able to use Design Heuristics to generate multiple concepts, and that initial concepts produced using Design Heuristics were carried over into final team design. The results support the applicability of Design Heuristics to student idea generation in biomedical engineering design.  相似文献   

略论构建学习型社会中的电大系统建设   总被引：2，自引：0，他引：2  

尹炎 《现代远距离教育》2003,(2):7-9

实现高等教育大众化是我国教育发展战略中的系统工程，电大是构成这项系统工程的重要组成部分，控制系统的决策部门只有科学地划分系统内各于系统的职能和任务，才能使系统处于良性态势。电大在实施网络环境下的现代远程教育中加大了投入，为建立我国现代远程教育公共服务体系奠定了重要的物资基础，应该成为我国现代远程教育公共服务体系的主体。加强和完善电大系统建设是电大本身发展的需要，也是实现我国高等教育大众化的需要，对此，各级电大都有义不客辞的责任和义务。  相似文献   

Binding dilemma: Changing horses mid stream—Or why we stopped binding periodicals at HKBU     

Janet Frost  Wing Woo   《Library Collections, Acquisitions, and Technical Services》2007,31(2):85-95

A review of print and print + online English serials conducted at Hong Kong Baptist University Library in 2006 revealed low usage of many print journals calling into question the age old practice of binding serials. With binding costs escalating, serials budgets being reduced, and libraries increasingly purchasing electronic titles, it was time to review current binding practices. On conclusion of the review, it was recommended that binding of more than 85% of serials cease and be replaced by the use of boxes and that usage statistics be reviewed annually with a view to effecting further reductions.  相似文献   

Secondary research: Information sources and methods: By David W. Stewart Beverly Hills,California: Sage Publications,Inc., 1984, 135 pages, $17.95 (cloth), $8.95 (paper). ISBN 0-8039-2338-4 (cloth), 0-8039-2339-2 (paper). LC 84-9879.     

Christina J. Woo 《Government Information Quarterly》1985,2(3):332-333

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Gaming personality and game dynamics in online discussion instructions     

Chih-Hsiung Tu  Cherng-Jyh Yen  Laura Sujo-Montes  Gayle A. Roberts 《Educational Media International》2015,52(3):155-172

Gamification is the use of game mechanics to drive game-like engagements and actions. It applies game mechanics, dynamics and frameworks to promote desired learning behaviours. Positive and effective gamification could enhance learning and engage learners in more social and context-rich decision-making for problem-solving in learning tasks. Effective gamification design should understand the game personalities of learners, social engagement styles, and intrinsic- and extrinsic-motivated user styles initially and evaluate and select appropriate game mechanics, game dynamics, to create ideal gamification instructions. The research question this study investigated is: How will four types of gaming personalities (i.e. Explorer, Socialiser, Killer and Achiever) predict the level of game dynamics in online discussion environments? This study concluded that examining how gaming personalities relate to game dynamics in a gamified online discussion instruction is not sufficient to design effective gamification. It suggests future studies in game instructions should focus on the relationships between game dynamics, gamification contexts, gaming personalities or preferences, dynamic gaming engagement styles, etc.  相似文献   

An unexpected particle oscillation for electrophoresis in viscoelastic fluids through a microchannel constriction     

Xinyu Lu  Saurin Patel  Meng Zhang  Sang Woo Joo  Shizhi Qian  Amod Ogale  Xiangchun Xuan 《Biomicrofluidics》2014,8(2)

Electrophoresis plays an important role in many applications, which, however, has so far been extensively studied in Newtonian fluids only. This work presents the first experimental investigation of particle electrophoresis in viscoelastic polyethylene oxide (PEO) solutions through a microchannel constriction under pure DC electric fields. An oscillatory particle motion is observed in the constriction region, which is distinctly different from the particle behavior in a polymer-free Newtonian fluid. This stream-wise particle oscillation continues until a sufficient number of particles form a chain to pass through the constriction completely. It is speculated that such an unexpected particle oscillating phenomenon is a consequence of the competition between electrokinetic force and viscoelastic force induced in the constriction. The electric field magnitude, particle size, and PEO concentration are all found to positively affect this viscoelasticity-related particle oscillation due to their respective influences on the two forces.  相似文献   

A concept map approach to developing collaborative Mindtools for context‐aware ubiquitous learning     

Gwo‐Jen Hwang  Yen‐Ru Shi  Hui‐Chun Chu 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(5):778-789

Recent advances in mobile and wireless communication technologies have enabled various new learning approaches which situate students in environments that combine real‐world and digital‐world learning resources; moreover, students are allowed to share knowledge or experiences with others during the learning process. Although such an approach seems to be promising and innovative, researchers have indicated several problems when applying it to practical applications, in particular, the lack of proper strategies or tools to assist the students to learn collaboratively in such a learning scenario with abundant content. Students might feel interested when using the mobile devices to learn; however, without proper assistance or guidance, their learning achievements are usually disappointing. To cope with this problem, this study proposes a concept map‐oriented Mindtool for collaborative ubiquitous learning. Experimental results from a natural science course in an elementary school show that this approach not only enhances learning motivation but also improves the learning achievements of the students.  相似文献   

How do congressional members appear on the web? Tracking the web visibility of South Korean politicians     

Yon Soo Lim  Han Woo ParkAuthor vitae 《Government Information Quarterly》2011,28(4):514-521

The web visibility of politicians has substantial implications for the internet and politics. In this regard, the present paper examines the web visibility of South Korea's 18th National Assembly members. This study identifies those members with the highest web visibility and determines the factors affecting their web visibility by using a set of socio-demographic variables indicating web visibility. The concept of web visibility is operationally defined as the number of web mentions of each congressional member. Web mentions of the name of each congressional member were collected across many platforms, including blogs, images, news, and websites, by using a Naver search tool based on the API, and relationships between the web visibility of the members and their socio-demographic attributes (their gender, age, term, constituency, and party affiliation) were analyzed using Kruskal–Wallis, Median, and Mann–Whitney U tests. The most visible politicians in the Korean webosphere had highly qualified political careers and prominence, and the difference in politicians' web visibility depended on their political attributes (their term, constituency, and party), not on their demographic attributes (their gender and age). These findings suggest that politicians who build political power and influence through their political career in the offline world are likely to be more visible in the webosphere. Further, an integrated indicator based on politicians' web visibility status can reflect their “ubiquitous presence” in Korea's digitalized society.  相似文献   

Successful recanalization of chronic total occlusion of the superior mesenteric artery by transradial approach     

Woo Taek Kim  Sung Gyun Ahn  Jun-Won Lee  Joong Kyung Sung  Seung Hwan Lee  Junghan Yoon 《Journal of Zhejiang University. Science. B》2010,11(8):627-630

It is a challenge to confirm chronic mesenteric ischemia (CMI) as a cause of gastrointestinal (Gl) symptoms such as postprandial epigastric bloating,anorexia,and debilitating weight loss.Endovascular intervention for CMI has been gaining popularity because of the high morbidity associated with surgical revascularization.However,in EVI for superior mesenteric artery (SMA) occlusion,the transfemoral approach is limited by difficulty in coaxial alignment of the guiding catheter,which leads to insufficient back-up support.Herein,we report on a 58-year-old male patient with chronic total occlusion of the SMA,which was successfully revascularized by endovascular intervention via the left radial artery.Transradial endovascutar therapy may be another treatment option for the treatment of CMI.  相似文献