中国西番莲属一新种     

黄淑美  黄全 《中国科学院研究生院学报》1985,23(1):64-66

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A test for robust Hurwitz stability of convex combinations of complex polynomials     

Shih-Feng YangChyi Hwang 《Journal of The Franklin Institute》2002,339(2):129-144

In this paper we present a method for testing the Hurwitz property of a segment of polynomials (1−λ)p₀(s)+λp₁(s), where λ∈[0,1] and p₀(s) and p₁(s) are nth-degree polynomials with complex coefficients. The method consists in constructing a parametric Routh-like array with polynomial entries and generating Sturm sequences for checking the absence of zeros of two real λ-polynomials of degrees 2 and 2n in the interval (0,1). The presented method is easy to implement. Moreover, it accomplishes the test in a finite number of arithmetic operations because it does not invoke any numerical root-finding procedure.  相似文献   

Effects of an augmented reality-based educational game on students' learning achievements and attitudes in real-world observations     

Gwo-Jen Hwang  Po-Han Wu  Chi-Chang Chen  Nien-Ting Tu 《Interactive Learning Environments》2016,24(8):1895-1906

Augmented reality (AR) has been recognized as a potential technology to help students link what they are observing in the real world to their prior knowledge. One of the most challenging issues of AR-based learning is the provision of effective strategy to help students focus on what they need to observe in the field. In this study, a competitive gaming approach is proposed to support AR-based learning activities conducted in real-world contexts. An experiment has been conducted on an elementary school ecology course to explore the effectiveness of the proposed approach in comparison with the conventional AR-based mobile learning approach in field trips. The experimental results show that the AR-based gaming approach can improve not only students' learning attitudes, but also their learning performance on the field trip. Accordingly, discussions and some suggestions for future work are provided.  相似文献   

Factors influencing university teachers’ use of a mobile technology-enhanced teaching (MTT) platform     

Tang  Kai-Yu  Hsiao  Chun-Hua  Tu  Yun-Fang  Hwang  Gwo-Jen  Wang  Youmei 《Educational technology research and development : ETR & D》2021,69(5):2705-2728

Educational technology research and development - The main purpose of this study was to examine the critical factors influencing university teachers’ use of a mobile technology-enhanced...  相似文献   

Postural tremor and control of the upper limb in air pistol shooters   总被引：2，自引：1，他引：1  

Tang WT  Zhang WY  Huang CC  Young MS  Hwang IS 《Journal of sports sciences》2008,26(14):1579-1587

A postural tremor appears whenever someone attempts to maintain a steady position against gravity. We examined the postural tremor that occurred while air pistol shooters were taking aim so as to compare the coordinative control of the shooters and to identify the features critical to successful shooting. Ten elite and ten pre-elite athletes participated in pistol shooting at 10 m, and the postural tremors in the pistol and upper limb were recorded with lightweight accelerometers. Exploratory analysis showed that the elite shooters had smaller tremor amplitudes than the pre-elite shooters in the pistol and distal arm segments. Compared with the pre-elite shooters, the elite shooters had a smaller tremor amplitude in the lateral direction relative to that in the vertical direction, together with weaker tremor coupling in the lateral direction and stronger vertical coupling of the pistol-hand complex. The resulting shot performance was inversely related to the amplitude of the tremor and to the 8-12 Hz spectral peak of the lateral tremor in the pistol-hand complex. We conclude that the postural tremors of air pistol shooters are associated with the skill of the shooters, and that the elite shooters could optimize the control of the pistol-hand complex, which strongly determined success in shooting.  相似文献   

Effects of the use of interactive E-books by intensive care unit patients' family members: Anxiety,learning performances and perceptions     

Shu-Yen Lee  Tsae-Jyy Wang  Gwo-Jen Hwang  Shao-Chen Chang 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(2):888-901

In an intensive care unit (ICU), patients' families play a very important role; however, they often lack medical knowledge and are extremely anxious, which could affect their ability to take care of the patients. The effects of giving conventional paper-based instruction are limited in terms of improving patients' families' understanding of the facilities and the rules in the ICU and in reducing their anxiety. Therefore, in this study, an interactive e-book was developed to present the nursing education content to ICU patients' family members. An experiment was conducted to compare the learning performances and perceptions of the patients' family members learning with the interactive e-book and those who learned with the conventional approach. The research results showed that the nursing e-book significantly improved the learning performances of the ICU patients' family members, although their anxiety was not immediately reduced. Moreover, the family members perceived that the e-book was useful and easy to use, and generally showed high satisfaction with its use. This reveals the potential of using interactive e-books to improve the quality of nursing service in hospitals.  相似文献   

The effect of an MSN agent on learning community and achievement     

Wu-Yuin Hwang  Sheng-Yi Wu 《Interactive Learning Environments》2013,21(4):413-432

The use of instant messaging to support e-learning will continue to gain importance because of its speed, effectiveness, and low cost. This study developed an MSN agent to mediate and facilitate students' learning in a Web-based course. The students' acceptance of the MSN agent and its effect on learning community identification and learning achievement were investigated using the technology acceptance model. Results indicated that the MSN agent proved easy to use, and that students recognized its benefits with regard to their learning. In more detail, students perceived that the MSN agent would be beneficial to learning community identification, but this perceived usefulness had less effect on their learning achievement. However, it was found that perceived system usage of the MSN agent was significantly related to learning achievement, which differed from the result of analyzing students' perceived usefulness of the agent. Rather than using a systematic recording log, the perceived system usage of the MSN agent was measured through questionnaires. Interview feedback revealed that effective learning was related to the learners' engagement in the MSN agent and not just from their perceived usefulness of it. Therefore, the MSN agent could have more potential to facilitate students' learning in an online environment if learning activities related to study are designed to promote students' engagement.  相似文献   

The use of specially designed tasks to enhance student interest in the cadaver dissection laboratory     

Kang SH  Shin JS  Hwang YI 《Anatomical sciences education》2012,5(2):76-82

Cadaver dissection is a key component of anatomy education. Unfortunately, students sometimes regard the process of dissection as uninteresting or stressful. To make laboratory time more interesting and to encourage discussion and collaborative learning among medical students, specially designed tasks were assigned to students throughout dissection. Student response and the effects of the tasks on examination scores were analyzed. The subjects of this study were 154 medical students who attended the dissection laboratory in 2009. Four tasks were given to teams of seven to eight students over the course of 2 weeks of lower limb dissection. The tasks were designed such that the answers could not be obtained by referencing books or searching the Internet, but rather through careful observation of the cadavers and discussion among team members. Questionnaires were administered. The majority of students agreed that the tasks were interesting (68.0%), encouraged team discussion (76.8%), and facilitated their understanding of anatomy (72.8%). However, they did not prefer that additional tasks be assigned during the other laboratory sessions. When examination scores of those who responded positively were compared with those who responded neutrally or negatively, no statistically significant differences could be found. In conclusion, the specially designed tasks assigned to students in the cadaver dissection laboratory encouraged team discussion and collaborative learning, and thereby generated interest in laboratory work. However, knowledge acquisition was not improved.  相似文献   

Using Blackboard and Skype for Mentoring Beginning Teachers     

Young Suk Hwang  Konstantinos Vrongistinos 《The American journal of distance education》2013,27(3):172-179

Abstract

The purpose of this article is to examine the nature of the Blackboard and Skype-based electronic mentoring system for beginning teachers. The Quality Teachers for Quality Students project developed an electronic mentoring system between beginning teachers and experienced teachers to support beginning teachers' instructional and classroom management skills with regard to the unique needs of English language learners (ELLs) in Southern California. The data analysis indicated that the combination of using Blackboard and Skype tools was beneficial to beginning teachers' effective teaching of ELLs.  相似文献   

Effects of argument quality,source credibility and self‐reported diabetes knowledge on message attitudes: an experiment using diabetes related messages          下载免费PDF全文

Tung‐Cheng Lin  Lih‐Lian Hwang  Yung‐Jye Lai 《Health information and libraries journal》2017,34(3):225-235

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