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Institution

Chung-Ang University

EducationSeoul, South Korea
About: Chung-Ang University is a education organization based out in Seoul, South Korea. It is known for research contribution in the topics: Population & Thin film. The organization has 13381 authors who have published 26978 publications receiving 416735 citations. The organization is also known as: CAU & Chung.
Topics: Population, Thin film, Apoptosis, Graphene, Cancer


Papers
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Journal ArticleDOI
TL;DR: In this article, an active clamping snubber (ACS) is proposed to absorb the voltage surge across the turned-off switch, and achieve the ZVS of all power switches.
Abstract: A new active clamping zero-voltage switching (ZVS) pulse-width modulation (PWM) current-fed half-bridge converter (CFHB) is proposed in this paper. Its active clamping snubber (ACS) can not only absorb the voltage surge across the turned-off switch, but also achieve the ZVS of all power switches. Moreover, it can be applied to all current-fed power conversion topologies and its operation as well as structure is very simple. Since auxiliary switches in the snubber circuit are switched in a complementary way to main switches, an additional PWM IC is not necessary. In addition, it does not need any clamp winding and auxiliary circuit besides additional two power switches and one capacitor while the conventional current-fed half bridge converter has to be equipped with two clamp windings, two ZVS circuits, and two snubbers. Therefore, it can ensure the higher operating frequency, smaller-sized reactive components, lower cost of production, easier implementation, and higher efficiency. The operational principle, theoretical analysis, and design considerations are presented. To confirm the operation, validity, and features of the proposed circuit, experimental results from a 200-W, 24-200Vdc prototype are presented.

203 citations

Journal ArticleDOI
TL;DR: This paper conducted a meta-analysis of the existing literature on the turnover intentions of public child welfare workers in the United States and found that the attitudes and perceptions of child welfare worker (e.g., organizational commitment and job satisfaction) had the highest influence on their turnover intention while a worker's perceptions of fairness and policy had relatively high effect sizes.

203 citations

Journal ArticleDOI
TL;DR: In this paper, the global existence and the decay estimates of small smooth solution for the 2-dimensional MHD equations without magnetic diffusion were proved, which confirmed the numerical observation that the energy of the MHD equation is dissipated at a rate independent of the ohmic resistivity.

202 citations

Journal ArticleDOI
TL;DR: EIGP subjects have higher reward dependency and an increased prevalence of the DRD2 Taq1A1 and COMTL alleles, which seems to be associated with reward dependence in EIGP adolescents.
Abstract: :Excessive internet video game play (EIGP) has emerged as a leading cause of behavioral and developmental problems in adolescents. Recent research has implicated the role of striatal dopaminergic system in the behavioral maladaptations associated with EIGP. This study investigates the reward

200 citations

Journal ArticleDOI
Jinsung Byun1, Boungju Jeon1, Junyoung Noh1, Young-Il Kim1, Sehyun Park1 
TL;DR: A ZigBee-based intelligent self-adjusting sensor (ZiSAS) in order to address concerns about the trade-off between the performance and cost of WSNs in home environments is proposed.
Abstract: Wireless sensor networks (WSNs) have been becoming increasingly essential in recent years because of their ability to manage real-time situational information for various novel services. Recently, the scope of WSN technologies has been expanded to places such as the home, in order to provide the residents with various intelligent services, such as home automation services or home energy management services. However, due to their architectural constraints, such as the trade-off between the performance and cost, WSNs are not effectively implemented in home environments. Therefore, this paper proposes a ZigBee-based intelligent self-adjusting sensor (ZiSAS) in order to address these concerns. This paper presents a situation-based selfadjusting scheme, an event-based self-adjusting sensor network, and hardware and middleware implementation. We also introduce some smart home services using the proposed system. We implemented our system in real test bed and conducted an experiment. Our experiment shows that we reduce the system's energy consumption.

200 citations


Authors

Showing all 13500 results

NameH-indexPapersCitations
Carl Nathan13543091535
Scheffer C.G. Tseng9333329213
Richard L. Sidman9329732009
H. Yamaguchi9037533135
Ajith Abraham86111331834
Byung Ihn Choi7860924925
Stefano Soatto7849923597
J. H. Kim7356623052
Daehee Kang7242223959
Lance M. McCracken7228118897
Masanobu Shinozuka6945621961
Seung U. Kim6435514269
Sug Hyung Lee6445421552
Seung U. Kim6312911983
Nam Jin Yoo6340312692
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202362
2022204
20212,535
20202,301
20192,140
20181,991