Far East University of South Korea

www.kdu.ac.kr
Pohang, South Korea

Far East University is located in Gamgok-myeon, Eumseong County, North Chungcheong province, South Korea. It was founded in 1998 by Dr. Taek-hee Lyu. The school flower is the chrysanthemum. Wikipedia.

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Lee Y.-H.,Far East University of South Korea
International Journal of Internet Protocol Technology | Year: 2017

This paper proposes a novel multiple emotion recognition scheme from facial expressions which is able to understand a combination of different emotions using active appearance model (AAM), k-nearest neighbour (k-NN) and the proposed classification model in mobile environments. The proposed method classifies five basic emotions (normal, happy, sad, angry, and surprise) and ambiguous facial emotions by weighted combining of the basic emotions in real time. Whereas most previous researches of emotion recognition identify various kinds of single emotion, this work recognises various multiple emotions with combination of five basic emotions. To evaluate the performance of the proposed method, we can achieve the best 93% accuracy in recognising the emotion. The experimental results show that the proposed method effectively performed well over the recognition of facial emotion, and the obtained result indicates the good performance enough to be applicable to mobile environments. Copyright © 2017 Inderscience Enterprises Ltd.


Chung H.-S.,Far East University of South Korea
Transactions on Electrical and Electronic Materials | Year: 2017

This research was analyzed thermal characteristics that was appointed disadvantage when smart LED driver ICs was packaged and we applied extracted thermal characteristics for optimal layout design. We confirmed reliability of smart LED driver ICs package without additional heat sink. If the package is not heat sink, we are possible to minimize package. For extracting thermal loss due to overshoot current, we increased driver current by two and three times. As a result of experiment, we obtained 22 mW and 49.5 mW thermal loss. And we obtained optimal data of 350 mA driver current. It is important to distance between power MOSFET and driver ICs. If the distance was increased, the temperature of package was decreased. And so we obtained optimal data of 3.7 mm distance between power MOSFET and driver ICs. Finally, we fabricated real package and we analyzed the electrical characteristics. We obtained constant 35 V output voltage and 80% efficiency. © 2017 KIEEME. All rights reserved.


Kang E.G.,Far East University of South Korea
Transactions on Electrical and Electronic Materials | Year: 2017

This research analyzed the electrical characteristics of an 80 V optimal trench power MOSFET (metal oxide field effect transistor) for mobile applications. The power MOSFET is a fast switching device in fields with low voltage(<100 V) such as mobile application. Moreover, the power MOSFET is a major carrier device that is not minor carrier accumulation when the device is turned off. We performed process and device simulation using TCAD tools such as MEDICI and TSUPREM. The electrical characteristics of the proposed trench gate power MOSFET such as breakdown voltage and on resistance were compared with those of the conventional power MOSFET. Consequently, we obtained breakdown voltage of 100 V and low on resistance of 130 mΩ. The proposed power MOSFET will be used as a switch in batteries of mobile phones and note books. © 2017 KIEEME. All rights reserved.


Nahm E.-S.,Far East University of South Korea
Transactions of the Korean Institute of Electrical Engineers | Year: 2017

In these days, the big-size and high resolution multimedia file is widely used through networks. To transfer and service effectively, the internet network technology is necessary to substitute broadcasting. Normally Content Delivery Network(CDN) is widely used in conventional internet for multimedia services. But it has a small bandwidth to service. So to solve this problems, many researchers have suggest the protocol for download, content distribution/saving, server synchronization, caching, pushing rate, and streaming etc. But all of these has some defects like low resolution, packets loss and delay, real application implementations etc. So, this paper suggests a new method of network protocol based on P2P collaboration and user's content using information. And it evaluated the performance of suggested method. As the results, it showed the effectiveness of 4 performances indices: download speed, decreasing rate of connected user in same time, adaptive hit ratio, traffic decreasing rate. Copyright © The Korean Institute of Electrical Engineers.


Joo J.,Far East University of South Korea | Sang Y.,University of Texas at Austin
Computers in Human Behavior | Year: 2013

This study investigates factors that influence adoption and use of smartphones among Koreans and seeks to integrate two theoretical approaches: the technology acceptance model (TAM) and the uses and gratifications (U&G) approach. To that end, the study used data from a self-reported survey of 491 Korean adults who use Apple's iPhone. A structural equation model employed in the current study demonstrates that Koreans' smartphone use is affected more by motivations based on instrumental and goal-oriented use than by ritualized and less-goal oriented use. The findings suggest that to spread information system with innovative and active features, developers should pay attention to users' intrinsic motivations as well as to their extrinsic perceptions. © 2013 Published by Elsevier Ltd.


Oh I.K.,Hanyang University | Bae I.Y.,Far East University of South Korea | Lee H.G.,Hanyang University
International Journal of Biological Macromolecules | Year: 2014

The influence of the ratio of soluble dietary fiber (SDF) and insoluble dietary fiber (IDF) on the in vitro starch digestion, predicted glycemic index (pGI), and the physicochemical properties of fiber-enriched cakes were evaluated. The hydration and pasting properties were affected by the ratio of SDF and IDF. According to the increase of IDF ratio (SDF ratio reduction) in 3. g fiber-enriched cakes, slowly digestible starch (SDS) contents increased, while the rapidly digestible starch (RDS) contents decreased. The pGI values were significantly different with control in 3. g fiber-enriched cake containing more than 50% IDF contents (p< 0.05). But the pGI values of 6. g fiber-enriched cake samples were not significantly different by SDF and IDF ratio. With the exception of the SDF 100% cake, volume index, hardness, and color values of the fiber-enriched cakes increased according to reductions in the SDF ratio. The cakes containing 3. g of total dietary fiber (the same ratio of SDF and IDF) per serving were shown to have low pGI and acceptable quality attributes. Specially, total dietary fiber amount and IDF ratio are more effective than SDF ratio to lower the pGI value. © 2013 Elsevier B.V.


Park K.,Far East University of South Korea | Hwang S.Y.,University of Seoul
Journal of Cardiovascular Nursing | Year: 2015

Background: Health management or health promotion programs are limited, particularly for workers in small-sized industries. Objectives: This study aimed to identify the 10-year cardiovascular disease (CVD) risk using the general Framingham Risk Score and examine predictors of CVD risk adjusted for age among male workers. Methods: Routine health screening data and self-reported questionnaires were collected from 12 933 male workers in 1041 industries from 2009 to 2011 in South Korea. Results: The proportion of high CVD risk (Framingham Risk Score >20%) was 7.1% (n = 919). Most (83.5%) subjects were manufacturing workers, engaged in manual labor, with a mean (SD) age of 42.1 (9.2) years (range, 30-70 years). Younger workers were more likely to smoke cigarettes, drink alcohol heavily, and be physically inactive. A logistic regression analysis showed that after adjusting for age, occupation type, body mass index, physical activity, and alcohol consumption were significant predictors of 10-year CVD risk. Conclusion: To reduce CVD risk, education regarding lifestyle modification should be emphasized for small-sized industrial workers who are overweight, physically inactive, and heavy alcohol drinkers and who work as bus or taxi drivers. Careful attention is also needed for younger workers who are a latent risk group for the development of CVD. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.


Kang E.G.,Far East University of South Korea
Transactions on Electrical and Electronic Materials | Year: 2016

This paper investigated the trench process, unified field limit ring, and other products for the development of a 500 V-level unified trench gate power MOSFET. The optimal base chemistry for the device was found to be SF6. In SEM analysis, the step process of the trench gate and field limit ring showed outstanding process results. After finalizing device design, its electrical characteristics were compared and contrasted with those of a planar device. It was shown that, although both devices maintained a breakdown voltage of 500 V, the Vth and on-state voltage drop characteristics were better than those of the planar type. © 2016 KIEEME. All rights reserved.


Lee J.-W.,Far East University of South Korea
Development Policy Review | Year: 2014

Not only has there been a growth in the utilisation of non-standard workers in South Korea in recent years, but a qualitative shift has also occurred in the nature of contracting practices. This article attempts to improve understanding of this trend by shedding light on the contradictory nature of the contracting system, while also addressing problems associated with the deployment of an external labour force with fewer employment entitlements on user-firm sites, and the implications of these phenomena for employment practices and workers' rights. © The Author 2014.


Kang E.G.,Far East University of South Korea
Transactions on Electrical and Electronic Materials | Year: 2016

In this paper, we have analyzed the electrical characteristics of 1200V trench gate field stop IGBT and have compared to NPT planar type IGBT and NPT planar field stop IGBT. As a result of analyzing, we obtained superior electrical characteristics of trench gate field stop IGBT than conventional IGBT. To begin with, the breakdown voltage characteristic was showed 1,460 V and on state voltage drop was showed 0.7 V. We obtained 3.5 V threshold voltage, too. To use these results, we have extracted optimal design and process parameter and designed trench gate field stop IGBT. The designed trench gate IGBT will use to inverter of renewable energy and automotive industry. © 2016 KIEEME. All rights reserved.

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