Development and Implementation of Science and Technology Ethics Education Program for Prospective Science Teachers     

Hyang-yon Rhee  Kyunghee Choi 《Science & Education》2014,23(5):1101-1130

The purposes of this study were (1) to develop a science and technology (ST) ethics education program for prospective science teachers, (2) to examine the effect of the program on the perceptions of the participants, in terms of their ethics and education concerns, and (3) to evaluate the impact of the program design. The program utilized problem-based learning (PBL) which was performed as an iterative process during two cycles. A total of 23 and 29 prospective teachers in each cycle performed team activities. A PBL-based ST ethics education program for the science classroom setting was effective in enhancing participants’ perceptions of ethics and education in ST. These perceptions motivated prospective science teachers to develop and implement ST ethics education in their future classrooms. The change in the prospective teachers’ perceptions of ethical issues and the need for ethics education was greater when the topic was controversial.  相似文献   

Developing Character and Values for Global Citizens: Analysis of pre-service science teachers’ moral reasoning on socioscientific issues     

Hyunju Lee  Hyunsook Chang  Kyunghee Choi  Sung-Won Kim  Dana L. Zeidler 《International Journal of Science Education》2013,35(6):925-953

Character and values are the essential driving forces that serve as general guides or points of reference for individuals to support decision-making and to act responsibly about global socioscientific issues (SSIs). Based on this assumption, we investigated to what extent pre-service science teachers (PSTs) of South Korea possess character and values as global citizens; these values include ecological worldview, socioscientific accountability, and social and moral compassion. Eighteen PSTs participated in the SSI programs focusing on developing character and values through dialogical and reflective processes. SSIs were centered on the use of nuclear power generation, climate change, and embryonic stem cell research. The results indicated that PSTs showed three key elements of character and values, but failed to apply consistent moral principles on the issues and demonstrated limited global perspectives. While they tended to approach the issues with emotion and sympathy, they nonetheless failed to perceive themselves as major moral agents who are able to actively resolve large-scale societal issues. This study also suggests that the SSI programs can facilitate socioscientific reasoning to include abilities such as recognition of the complexity of SSIs, examine issues from multiple perspectives, and exhibit skepticism about information.  相似文献   

Factors influencing the higher education of international students from Confucian East Asia     

Serene H.-J. Choi  Timo A. Nieminen 《高等教育研究与发展》2013,32(2):161-173

Higher education, especially that leading to a degree from a high-prestige university, is strongly related to social status and employment opportunities in East Asian countries. This is a consequence of both traditional Confucian attitudes to education and the social and economic changes accompanying industrialisation. Since the number of places available at high-prestige universities is limited, competition is intense. Successful entry to such a university is not only an important achievement for the future career of the student, but also a victory for the family. In contrast, failure to do so is often seen as shameful for the family, sometimes resulting in psychological problems or suicide. This background affects the international education of East Asian students, who often have a high level of family support, with correspondingly high expectations of their success. Motives for international study vary, from avoidance of the hyper-competitive domestic system, pursuit of an overseas degree as an ‘easy option’ of moderate prestige, to an expectation of more up-to-date teaching and content. Understanding this background can be a first step for Australian or other Western educators to better meet the needs of East Asian international students and to attract students from East Asia in the long term.  相似文献   

Effects of transition from elementary school to junior high school on early adolescents' self-esteem and perceived competence     

Theron B. Proctor  Hee-Sook Choi 《Psychology in the schools》1994,31(4):319-327

Early adolescents' self-esteem and perceived competence in the cognitive, social, and physical domains were examined across the transition from elementary school to junior high school. Self-esteem and perceived social and physical competence were either stable or increased for most children. Cognitive competence was unchanged. It was concluded that, in general, early adolescents' perceptions of self-esteem and competence are not adversely affected by the transition.  相似文献   

Influence of Cultural Orientations on Electronic Word-of-Mouth (eWOM) in Social Media     

Youngtae Choi 《Journal of Intercultural Communication Research》2019,48(3):292-313

This study explores how horizontal/vertical individualism and collectivism (HVIC) orientations influence electronic word-of-mouth (eWOM) (i.e., opinion leadership and opinion seeking) in social media. Online survey panel data through Amazon MTurk were collected from American social media users to address the research purpose. The results, using the structural equation modeling, show that the paths from horizontal individualism to opinion leadership, vertical individualism to opinion leadership and opinion seeking, horizontal collectivism to opinion leadership, and vertical collectivism to opinion leadership and opinion seeking were significant. This study provides theoretical and managerial implications regarding the influence of HVIC orientations on eWOM in social media.  相似文献   

Relationship between foot strike pattern,running speed,and footwear condition in recreational distance runners     

Roy T. H. Cheung  Rodney Y. L. Wong  Tim K. W. Chung  R. T. Choi  Wendy W. Y. Leung  Diana H. Y. Shek 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(2):238-247

Compared to competitive runners, recreational runners appear to be more prone to injuries, which have been associated with foot strike patterns. Surprisingly, only few studies had examined the foot strike patterns outside laboratories. Therefore, this study compared the foot strike patterns in recreational runners at outdoor tracks with previously reported data. We also investigated the relationship between foot strike pattern, speed, and footwear in this cohort. Among 434 recreational runners analysed, 89.6% of them landed with rearfoot strike (RFS). Only 6.9 and 3.5% landed with midfoot and forefoot, respectively. A significant shift towards non-RFS was observed in our cohort, when compared with previously reported data. When speed increased by 1 m/s, the odds of having forefoot strike and midfoot strike relative to RFS increased by 2.3 times and 2.6 times, respectively. Runners were 9.2 times more likely to run with a forefoot strike in minimalists compared to regular running shoes, although 70% of runners in minimalists continued to use a RFS. These findings suggest that foot strike pattern may differ across running conditions and runners should consider these factors in order to mitigate potential injury.  相似文献   

Reliable automatic word spacing using a space insertion and correction model based on neural networks in Korean     

Sihyung Kim  Gihyeon Choi  Harksoo Kim 《Information processing & management》2019,56(3):1046-1052

Automatic word spacing in Korean remains a significant task in natural language processing owing to the extremely complex word spacing rules involved. Most previous models remove all spaces in input sentences and insert new spaces in the modified input sentences. If input sentences include only a small number of spacing errors, the previous models often return sentences with even more spacing errors than the input sentences because they remove the correct spaces that were typed intentionally by the users. To reduce this problem, we propose an automatic word spacing model based on a neural network that effectively uses word spacing information from input sentences. The proposed model comprises a space insertion layer and a spacing-error correction layer. Using an approach similar to previous models, the space insertion layer inserts word spaces into input sentences from which all spaces have been removed. The spacing error correction layer post-corrects the spacing errors of the space insertion model using word spacing typed by users. Because the two layers are tightly connected in the proposed model, the backpropagation flows are not blocked. As a result, the space insertion and error correction are performed simultaneously. In experiments, the proposed model outperformed all compared models on all measures on the same test data. In addition, it exhibited reliable performance (word-unit F1-measures of 94.17%～97.87%) regardless of how many word spacing errors were present in the input sentences.  相似文献   

Improving Item-Exposure Control in Adaptive Testing     

Wim J. van der Linden  Seung W. Choi 《Journal of Educational Measurement》2020,57(3):405-422

One of the methods of controlling test security in adaptive testing is imposing random item-ineligibility constraints on the selection of the items with probabilities automatically updated to maintain a predetermined upper bound on the exposure rates. Three major improvements of the method are presented. First, a few modifications to improve the initialization of the method and accelerate the impact of its feedback mechanism on the observed item-exposure rates are introduced. Second, the case of conditional item-exposure control given the uncertainty of examinee's ability parameter is addressed. Third, although rare for a well-designed item pool, when applied in combination with the shadow-test approach to adaptive testing the method may meet occasional infeasibility of the shadow-test model. A big M method is proposed that resolves the issue. The practical advantages of the improvements are illustrated using simulated adaptive testing from a real-world item pool under a variety of conditions.  相似文献   

The rise of the organisational society in Canadian and U.S. textbooks: 1836-2011     

Minju Choi  Nadine Ann Skinner 《Globalisation, Societies & Education》2021,19(1):7-22

ABSTRACT

This paper examines how organisations have increasingly been portrayed in textbooks as solving social problems as well as contributing to national development. Findings from 527 Canadian and U.S. textbooks illustrate the rise of an organisational society during the time period between 1836 and 2011. Discussions of for-profit and non-profit forms of organisations rise early on in both countries, creating the foundation for an organisational society, which expands to incorporate global organisations in the post-World War II period. We argue that such portrayals in textbooks both reflect and legitimise the role of organisations in society, strengthening their taken-for-granted status as social actors.  相似文献   

Practitioners’ celebrity endorser selection criteria in South Korea: an empirical analysis using the Analytic Hierarchy Process     

Bongchul Kim  Hana Kim  Myungil Choi 《亚洲交流杂志》2017,27(3):285-303

This study investigated how clients and advertising agencies in Korea prioritized celebrity selection criteria differently. Responses from 50 client-side and 50 agency-side executives in Korea were analyzed using the Analytic Hierarchy Process. Results show that the brand-centered factor ‘Match-up’ was considered most important by both clients and agencies but that the celebrity-centered factor ‘Popularity’ was ranked quite differently (i.e. second by agencies and fourth by clients, out of five factors). Other factors (i.e. Availability and Potential Risk) were ranked similarly. The main finding of the study is that Korean ad agencies and clients placed different weight on celebrity endorser selection criteria. This finding is particularly valuable to national and international advertisers who are deliberating about celebrity endorsement for the Korean market.  相似文献