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A research trend of occupational ergonomics in Korea

  • Lee, S.D.
    • Journal of the Ergonomics Society of Korea
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    • v.9 no.2
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    • pp.65-72
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    • 1990
  • The historical development process and the current research trends of ergonmics in Korea are reviewed and organized in this paper. The recommended research directions in the near future are also discussed based upon the analyses of the potential major key industries of Korea in 1990's. Keynords: Human Engineering Society of Korea; Research activities in Ergonomics; Ergonomics educations

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Transient impedance characteristics of counterpoise according to the current injection position (전류인가위치에 따른 매설지선의 과도접지임피던스 특성)

  • Lee, Bok-Hee;Li, Feng;Lee, Song-Zhu;Yoo, Jae-Duk;Cho, Sung-Chul
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2009.05a
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    • pp.328-331
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    • 2009
  • This paper presents the behaviors of transient and conventional grounding impedances of a 30m counterpoise according to the injection point of lightning impulse currents. As a result, the trend of the conventional grounding impedances measured as a function of risetime of impulse current is similar to the transient grounding impedance of counterpoise. The injection point of impulse current greatly influences on the transient grounding impedance characteristics of counterpoise. The transient grounding impedances strongly depend on the injection point and the rising time of impulse current and the soil characteristics.

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INFLUENCE OF HALL CURRENT AND HEAT SOURCE ON MHD FLOW OF A ROTATING FLUID IN A PARALLEL POROUS PLATE CHANNEL

  • VENKATESWARLU, M.;UPENDER REDDY, G.;VENKATA LAKSHMI, D.
    • Journal of the Korean Society for Industrial and Applied Mathematics
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    • v.22 no.4
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    • pp.217-239
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    • 2018
  • This paper examined the MHD and thermal behavior of unsteady mixed convection flow of a rotating fluid in a porous parallel plate channel in the presence of Hall current and heat source. The exact solutions of the concentration, energy and momentum equations are obtained. The influence of each governing parameter on non dimensional velocity, temperature, concentration, skin friction coefficient, rate of heat transfer and rate of mass transfer at the porous parallel plate channel surfaces is discussed. During the course of numerical computation, it is observed that as Hall current parameter and Soret number at the porous channel surfaces increases, the primary and secondary velocity profiles are increases while the primary and secondary skin friction coefficients are increases at the cold wall and decreases at the heated wall. In particular, it is noticed that a reverse trend in case of heat source parameter.

Development of Premium Denim Design for the Senior Generation - Hybrid Yarn Using Conjugated Dyeing - (시니어 세대를 위한 프리미엄 데님 디자인 개발 - 하이브리드 얀 커버링 복합사 직물을 활용하여 -)

  • Chung, Sam-Ho
    • Journal of the Korea Fashion and Costume Design Association
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    • v.13 no.1
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    • pp.47-57
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    • 2011
  • As the development of denim products using new differentiated materials plays an important role regardless of their target age groups, there is an increasing need for the development of premium denim designs for senior women using various materials. As part of the strategy to develop such a design for the senior generation, a market survey was performed regarding commercially available premium denim products in the market, and the current trends in the denim market were researched and analyzed to make use of the results in design development. In addition, a differentiated material, hybrid yarn using conjugated dyeing (HYCD) was applied to use several washing techniques capable of highlighting the unique features of denim clothing. The design of four items including a jacket, vest, capri pants and long pants were suggested. These items were differentiated from other products by emphasizing their details such as stitching and pockets. In light of the current consumer trend to select denim jeans on the basis of their fashion-ability (e.g., silhouette or color) rather than practicality or price, it is considered meaningful to develop high value added, premium jean products for the senior generation using diverse materials and details. At the same time, performing further studies designed to demonstrate the stability and reliability of the developed products through consumers' comparative assessment is required.

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