Longitudinal trends in networks of university-industry-government relations in South Korea: The role of programmatic incentives   总被引：1，自引：0，他引：1  

Han Woo Park  Loet Leydesdorff 《Research Policy》2010,39(5):640-649

This study examines the longitudinal trend of systemness in networked research relations in South Korea using a triple helix (TH) indicator of university-industry-government (UIG) relations. The data were harvested from the Science Citation Index (SCI) and its counterparts in the social sciences (SSCI) and the arts and humanities (A&HCI). The total number of Korean SCI publications has grown rapidly since 1965. However, the TH indicator shows that the network dynamics have varied considerably according to the research policies of the national government. The collaboration patterns, as measured by co-authorship relations in the SCI noticeably increased, with some variation, from the mid-1970s to the mid-1990s. However, inter-institutional collaboration in the first decade of the 21st century was negatively influenced by the new national science and technology (S&T) research policies that evaluated domestic scientists and research groups based on their international publication numbers rather than on the level of cooperation among academic, private, and public domains. The results reveal that Korea has failed to boost its national research capacity by neglecting the network effects in science, technology, and industry.  相似文献   

Improved stabilization criteria for fuzzy systems under variable sampling     

Chao Ge  Hong Wang  Yajuan Liu  Ju H. Park 《Journal of The Franklin Institute》2017,354(14):5839-5853

This paper investigates the problem of stabilization for fuzzy sampled-data systems with variable sampling. A novel Lyapunov–Krasovskii functional (LKF) is introduced to the fuzzy systems. The benefit of the new approach is that the LKF develops more information about actual sampling pattern of the fuzzy sampled-data systems. In addition, some symmetric matrices involved in the LKF are not required to be positive definite. Based on a recently introduced Wirtinger-based integral inequality that has been shown to be less conservative than Jensen’s inequality, much less conservative stabilization conditions are obtained. Then, the corresponding sampled-data controller can be synthesized by solving a set of linear matrix inequalities (LMIs). Finally, an illustrative example is given to show the feasibility and effectiveness of the proposed method.  相似文献   

Advanced stability criteria for linear systems with time-varying delays     

M.J. Park  O.M. Kwon  J.H. Ryu 《Journal of The Franklin Institute》2018,355(1):520-543

This paper investigates a stability problem for linear systems with time-varying delays. By constructing suitable augmented Lyapunov–Krasovskii functionals, improved stability criteria under various conditions of time-varying delays are derived within the framework of linear matrix inequalities (LMIs). Moreover, to reduce the computational burden caused by the non-convex term including h²(t), how to deal with it is applied by estimating it to the convex term including h(t). Finally, three illustrative examples are given to show the effectiveness of the proposed criteria.  相似文献   

A Preliminary Analysis of the Factors Affecting Satisfaction with the Police Practicum Credit Program in South Korea     

Joon Tag Cho  Hyeonho Park 《Journal of Criminal Justice Education》2018,29(1):137-156

Numerous studies have been conducted about criminal justice internship programs in western countries, but few have addressed similar types of programs conducted in Eastern countries. To fill this gap in the literature, this study preliminarily analyzed the factors affecting satisfaction with the police practicum credit program in South Korea using data collected from 208 participating students and police officers. The results showed that participants were generally satisfied with the program but had different perceptions about each program component. Focusing on the crucial elements affecting overall satisfaction with the program, the study examined the following factors: the curriculum; the period and practice time; the proportion of on-site practice; teaching material; credits; and police officers’ preparedness, attitudes and information offerings. Our results suggest that the curriculum and preparedness of the officers in charge were significant factors affecting the participants’ satisfaction. Based on the findings, implications for policy recommendations are discussed.  相似文献   

Improved approaches to stability criteria for neural networks with time-varying delays     

O.M. Kwon  M.J. Park  Ju H. Park  S.M. Lee  E.J. Cha 《Journal of The Franklin Institute》2013

In this paper, the problem of stability analysis for neural networks with time-varying delays is considered. By the use of a newly augmented Lyapunov functional and some novel techniques, sufficient conditions to guarantee the asymptotic stability of the concerned networks are established in terms of linear matrix inequalities (LMIs). Three numerical examples are given to show the improved stability region of the proposed works.  相似文献   

The New Argonauts: Regional Advantage in a Global Economy,by AnnaLee Saxenian. Cambridge,MA: Harvard University Press, 2006. 432 pp. $18.95 paper. $27.95 cloth. ISBN 978-0-674-02566-0 paper/978-0-674-02201-0 cloth     

Yong Jin Park 《The Information Society》2013,29(2):126-127

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Components of Conceptual Ecologies   总被引：1，自引：0，他引：1  

Hyun Ju Park 《Research in Science Education》2007,37(2):217-237

The theory of conceptual change is criticized because it focuses only on supposed underlying logical structures and rational process processes, and lacks attention to affective aspects as well as motivational constructs in students’ learning science. This is a vast underestimation of the complexity and diversity of one’s change of conceptions. The notion of conceptual ecology provides a context for understanding individuals’ conceptual change learning, as it is the environment through which all information is interpreted. This research investigated how high school students’ statements, made in answering questions, reflect selected components of their conceptual ecologies. Data for this study was collected from six interviews in which seven students took part. The data also include the science teacher’s profiles of each student, the students’ personal journals, their assignments, and their examinations and answers in class. The analysis presented will here include only those components that were represented in the discourse of the seven high school students who were interviewed. When students were asked questions, there was evidence of the engagement of the various components of conceptual ecologies. These components include: epistemological commitments, metaphysical beliefs, the affective domain and emotional aspects, the nature of knowledge, the nature of learning, the nature of conceptions, and past experience. Evidence from this study suggests that these components might function as constraints to learning. This study contributes to the field by expanding our knowledge of the components of high school students’ conceptual ecologies through its definition of the categories and themes associated with those components. In examining across the range of components, the study illustrates the variety and sources of science conceptions within high school students’ conceptual ecologies.  相似文献   

Book review     

Ok-choon Park 《Instructional Science》1991,20(4):341-347

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Effects of learning analytics dashboard: analyzing the relations among dashboard utilization,satisfaction, and learning achievement     

Jeonghyun Kim  Il-Hyun Jo  Yeonjeong Park 《Asia Pacific Education Review》2016,17(1):13-24

The learning analytics dashboard (LAD) is a newly developed learning support tool for virtual classrooms that is believed to allow students to review their online learning behavior patterns intuitively through the provision of visual information. The purpose of this study was to empirically validate the effects of LAD. An experimental study was conducted with a dashboard treatment group and a control group. The researchers developed a LAD and evaluated its effectiveness on the sample of 151 college students at a private university located in Korea, who were taking the online course titled “Management Statistics” in the first semester of 2014. The following results were obtained. First, the students who received dashboard treatment presented higher final score than those who did not. Second, the dashboard usage frequency, as measured by the number of times the dashboard was opened, did not have a significant impact on learning achievement. However, a slightly positive correlation between satisfaction with LAD and learning achievement was observed. Further analysis indicated that learners who used the dashboard only a few times showed relatively high satisfaction with LAD. On the other hand, high academic achievers who opened LAD relatively frequently showed lower satisfaction with dashboard. The results guide that LAD should be revised in a way to motivate learners consistently and support learners who have different academic achievement levels. The study discusses the further research tasks in terms of LAD development as an effective and personalized feedback tool to improve learners’ academic achievement.  相似文献   

The factors of child physical abuse in Korean immigrant families     

Park MS 《Child abuse & neglect》2001,25(7):945-958

OBJECTIVE: This study explores Korean immigrant mothers' attitudes toward child physical abuse based on an ecological perspective. METHOD: One hundred and forty-four Korean immigrant mothers who came to the US after age 16 and have at least one child under 18 years old participated in this study. Data were collected using instruments translated in Korean that measure mothers' attitudes toward child physical abuse in four areas: degree of agreement with physical abuse, conflict tactics, belief in the use of physical punishment, and perceptions regarding physical abuse. RESULTS: This study found that the following variables affect Korean immigrant mothers' attitudes toward child physical abuse at ecological levels of the environment: amount of time spent with children, experience of corporal punishment as a child, children's gender and age, family acculturation conflicts, mothers' age, and length of time in US at the micro level; involvement in their children's school and involvement in social organizations at the meso level; level of education and reported stress of immigrant life at the exo level; value of children in Korean culture, familiarity with Child Protective Services (CPS), perceived discrimination, and value of corporal punishment at the macro level. CONCLUSIONS: This study suggests the importance of cultural sensitivity in social work practice when working with Korean immigrants. It also implies that intervention and prevention efforts of child abuse should be targeted at more than one level of the environment.  相似文献