Hyperlink network analysis of the educational blog     

Eric Zhi Feng Liu  Ru Chu Shih  Yuan Lung Tsai 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(2):E25-E29

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Creating a Business Strategy Evaluation Model for National Museums Based on the Views of Curators     

Pei‐Hsuan Tsai  Chin‐Tsai Lin 《Curator: The Museum Journal》2016,59(3):287-303

The aim of this study is to find the critical factors that influence Taiwan's national museum business performance based on its curators’ views. The study explored the causal relationships among the criteria that emerged in the study and of each sub‐criteria. Since developing a business strategy is a multiple‐criteria decision‐making (MCDM) problem, this study adopted the causal‐effect model of decision‐making trial and evaluation laboratory (DEMATEL) technique. The DEMATEL technique simplifies and visualizes the interrelationships among decision‐making criteria. The study identified four core criteria – benefits, opportunity, costs, and risks, as key influencers in the national museum business performance. Each key criteria was supported by a set of sub‐criteria which, when considered together, produced an influential network relations map. The results of this study provided Taiwan's national museum curators with an idea‐based understanding of how to create business and marketing strategies that could enhance exhibition features, experience activities, and facilities that could be linked to satisfaction of visitors’ desires and offer a potentials strategy for assessing likelihood of return visits.  相似文献   

On-chip pressure sensor using single-layer concentric chambers     

Chia-Hung Dylan Tsai  Makoto Kaneko 《Biomicrofluidics》2016,10(2)

A vision-based on-chip sensor for sensing local pressure inside a microfluidic device is proposed and evaluated in this paper. The local pressure is determined from the change of color intensity in the sensing chamber which is pre-filled with colored fluid. The working principle of the sensor is based on polydimethylsiloxane deformation. The pressure at the point of interest is guided into a deformation chamber, where the structural stiffness is softened by chamber geometry, and thus, the chamber deforms as a result of pressure changes. Such deformation is transmitted to the sensing chamber, a same-layer concentric inside the deformation chamber. The deformation in the sensing chamber causes the colored fluid flowing in or out the chamber and leads to different color intensity from the top view through a microscope. Experimental evaluations on static and dynamic responses by regulated input pressures were conducted. The correlation in static response is 0.97 while the dynamic responses are successfully observed up to 16 Hz. The greatest advantage is that the local pressure can be directly seen without any additional hardware or electricity. The whole sensor is on a single-layer microfluidic design, so that the fabrication is simple, consistent, and low-cost. The single-layer design also provides the convenience of easy integration for existing microfluidic systems.  相似文献   

DIF Detection Using Multiple‐Group Categorical CFA With Minimum Free Baseline Approach          下载免费PDF全文

Yu‐Wei Chang  Wei‐Kang Huang  Rung‐Ching Tsai 《Journal of Educational Measurement》2015,52(2):181-199

The aim of this study is to assess the efficiency of using the multiple‐group categorical confirmatory factor analysis (MCCFA) and the robust chi‐square difference test in differential item functioning (DIF) detection for polytomous items under the minimum free baseline strategy. While testing for DIF items, despite the strong assumption that all but the examined item are set to be DIF‐free, MCCFA with such a constrained baseline approach is commonly used in the literature. The present study relaxes this strong assumption and adopts the minimum free baseline approach where, aside from those parameters constrained for identification purpose, parameters of all but the examined item are allowed to differ among groups. Based on the simulation results, the robust chi‐square difference test statistic with the mean and variance adjustment is shown to be efficient in detecting DIF for polytomous items in terms of the empirical power and Type I error rates. To sum up, MCCFA under the minimum free baseline strategy is useful for DIF detection for polytomous items.  相似文献   

Getting Grandma Online: Are Tablets the Answer for Increasing Digital Inclusion for Older Adults in the U.S.?     

Hsin-yi Sandy Tsai  Ruth Shillair  Shelia R. Cotten  Vicki Winstead  Elizabeth Yost 《Educational gerontology》2015,41(10):695-709

Using information and communication technologies (ICTs) can improve older adults’ quality of life. ICT use is associated with decreased feelings of loneliness and depression, along with increased feelings of independence and personal growth. However, limited access and low technological self-efficacy are key reasons why some groups, especially older adults, are excluded from being fully engaged in the digital world. In this study, we focus on older adults’ technological self-efficacy, which is related to their actual use of technology and the second level digital divide. Specifically, we examine: (a) how older adults decide to use a new technology, tablet computers; (b) how they conquer the barrier of technological self-efficacy through using tablets; and (c) the impacts of using this new technology in their lives. Twenty-one in-depth interviews were conducted with older adults residing in independent living communities in a medium-sized city in the Deep South region of the United States. Observational and enactive learning played important roles for older adults in using tablets. Seeing others use tablets, getting recommendations from family members, or having tablets given to them were the primary reasons they started to use tablet computers. The ease of use feature of tablets helped solve the problem of lacking technological self-efficacy. Using tablets helped increase a sense of connectedness. Tablet computers may be one way to increase digital inclusion among older adults.  相似文献   

The relationships between Chinese higher education students' epistemic beliefs and their judgmental standards of searching for literature online: undergraduate versus graduate comparisons     

Yan Dong  Yue-Yue Yu  Jui-Chi Wu  Chin-Chung Tsai 《Interactive Learning Environments》2015,23(2):250-266

The main purpose of this study was to examine the relationships between Chinese higher education students' epistemic beliefs and their judgmental standards of searching for literature online. Data were collected from 449 higher education students (152 college students and 297 graduate students) in Beijing via two self-reported questionnaires: one was the Epistemic Beliefs Questionnaire (EBQ), including four scales (Innate/Fixed Ability, Learning Effort/Process, Authority/Expert Knowledge, and Certainty of Knowledge); the other was the Online Judgmental Standards of Searching for Literature Questionnaire (OJSSLQ), consisting of six scales (Multiple sources, Authority, Content, Quantitative Indicators, Clarity, and Ease of Access). Through exploratory factor analyses, this study confirmed the reliability and validity of the EBQ and OJSSLQ. Further analyses indicated that there were significant differences between college and graduate students for the Content and Ease of Access judgmental standards of searching for literature online whereby graduate students had higher standards for these two factors, but there were no differences for the other factors. Correlation analysis between the EBQ and OJSSLQ was conducted for the college and graduate students. An interplay between the students' epistemic beliefs and their evaluative standards of searching for literature online was found. For example, the results indicated that both college and graduate students with the epistemic belief that learning requires great efforts and processes (Learning Effort/Process) had the tendency to judge the academic information by the standards of Authority and Content (i.e. checking the authority of literature or carefully reading the content). This study also found that epistemic beliefs might increasingly play a role in the students' judgmental standards of searching for literature online as they progressed into advanced study.  相似文献   

College Students Constructing Collective Knowledge of Natural Science History in a Collaborative Knowledge Building Community     

Hong  Huang-Yao  Chai  Ching Sing  Tsai  Chin-Chung 《Journal of Science Education and Technology》2015,24(5):549-561

Journal of Science Education and Technology - This study investigates whether engaging college students (n = 42) in a knowledge building environment would help them work as a...  相似文献   

A survey to examine teachers’ perceptions of design dispositions,lesson design practices,and their relationships with technological pedagogical content knowledge (TPACK)     

Joyce Hwee Ling Koh  Ching Sing Chai  Huang-Yao Hong  Chin-Chung Tsai 《Asia-Pacific Journal of Teacher Education》2015,43(5):378-391

This study investigates 201 Singaporean teachers’ perceptions of their technological pedagogical content knowledge (TPACK), lesson design practices, and design dispositions through a survey instrument. Investigation of these constructs reveal important variables influencing teachers’ perceptions of TPACK which have not yet been explored. The confirmatory factor analysis and reliability analysis confirm the validity and reliability of the instrument. The structural equation model shows that the teachers’ perceptions of design dispositions (orientations towards design) and lesson design practices (approaches used for lesson design) have direct relationships with the teachers’ perceptions of TPACK. The results of this study show that to enhance teachers’ TPACK perceptions, teacher educators need to help teachers develop lesson design practices that support ideation and iteration. They also need to develop teachers’ design dispositions that are amenable to exploring and resolving conflicting lesson design ideas. Going beyond TPACK, understandings of teachers’ lesson design practices and design dispositions are important for teacher educators to better design professional development for integration of information and communications technology.  相似文献   

Microfluidic reflow pumps     

Bryan Haslam  Long-Fang Tsai  Ryan R. Anderson  Seunghyun Kim  Weisheng Hu  Gregory P. Nordin 《Biomicrofluidics》2015,9(4)

A new microfluidic pump, termed a reflow pump, is designed to operate with a sub-μl sample volume and transport it back and forth between two pneumatically actuated reservoirs through a flow channel typically containing one or more sensor surfaces. The ultimate motivation is to efficiently use the small sample volume in conjunction with convection to maximize analyte flux to the sensor surface(s) in order to minimize sensor response time. In this paper, we focus on the operational properties of the pumps themselves (rather than the sensor surfaces), and demonstrate both two-layer and three-layer polydimethylsiloxane reflow pumps. For the three-layer pump, we examine the effects of reservoir actuation pressure and actuation period, and demonstrate average volumetric flow rates as high as 500 μl/min. We also show that the two-layer design can pump up to 93% of the sample volume during each half period and demonstrate integration of a reflow pump with a single-chip microcantilever array to measure maximum flow rate.  相似文献   

The Effect of a Pedagogical STEAM Model on Students’ Project Competence and Learning Motivation     

Lin  Chien-Liang  Tsai  Chun-Yen 《Journal of Science Education and Technology》2021,30(1):112-124

Journal of Science Education and Technology - The development of STEAM (Science, Technology, Engineering, Liberal Arts, and Mathematics) curricula has emerged in the past decade. A pedagogical...  相似文献