• 한국의류학회지
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• 제35권10호
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• pp.1150-1160
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• 2011

This study investigates i) the effect of salesperson's self efficacy and work overload on emotional labor and ii) the mediating role of emotion. A survey questionnaire is developed and implemented on salespersons working in the fashion retail stores of department stores. The measurement scales are composed of emotional labor, self efficacy, work overload and emotion. A total of 112 responses are analyzed by confirmatory factor analysis and a structural equation model with AMOS18.0. The results are as follows. Firstly, self efficacy has direct effect on both deep acting and surface acting of emotional labor without the mediating effect of emotion. Self efficacy has a positive effect on deep acting. Secondly, work overload has a negative effect on emotion. Job emotion has positive effect on deep acting and it has a negative effect on surface acting. Thirdly, emotion has a significant mediating effect between work overload and emotional labor. Finally, implications for personal management and job design in the fashion retail organizations are suggested.

• 대한조선학회지
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• 제21권3호
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• pp.27-34
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• 1984

When a ship is travelling in following seas, the encounter frequency is reduced to be very low. In that case broaching phenomenon is most likely to occur, and it may be due to wave exciting forces acting on ships. It is thought that the wave exciting forces acting on ships in following seas almost consist of two components. One is hydrostatic force due to Froude-Krylov hypothesis, and the other is hydrodynamic lift force due to orbital motion of water particles below the wave surface. In the present paper, the emphasis is laid upon wave exciting sway force, yaw moment and roll moment acting on ships in following seas. The authers take the case that the component of ship speed in the direction of wave propagation is equal to the wave celerity, i.e., the encounter frequency is zero. Hydrostatic force components are calculated by line integral method on Lewis form plane, and hydrodynamic lift components are calculated by lifting surface theory. Furthermore captive model tests are carried out in regular following waves generated by means of a wave making board. Through the comparison between calculated and measured values, it is confirmed that the wave exciting forces acting on ships in following seas can be predicted in terms of present method to a certain extent.

• 실천공학교육논문지
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• 제16권2호
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• pp.251-257
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• 2024

팬데믹 이후 세계는 디지털 콘텐츠로 연결되는 사회를 더 빨리 가져왔다. 공연 예술계 역시 기술이 작품의 제작 환경은 물론 내용과 형식을 바꿔가고 있다. 또한 디지털 매체와 가상현실과 연계된 프로그램, 공연은 계속 적극적으로 개발되고 늘어나고 있다. 이 논문은 먼저 이러한 변화가 급격하게 진행되는 시기, 연극과 연기 교육은 어떠한 모습으로 수요자들을 만나고 있는지 진단한다. 포스트 코로나 시대에 있어 기존의 전통적인 방법의 교육에는 균열이 시작되었다. 기존의 문제점들을 구체적으로 살펴보고 변화의 지점들을 가상 세계와 디지털 매체 환경의 변화로부터 살펴본다. 결론적으로 팬데믹 이후 연극과 연기 교육은 수요자 중심의 패러다임으로 변화해야 한다.

• Journal of Microbiology and Biotechnology
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• 제10권5호
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• pp.573-579
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• 2000

Knowledge on the enzymes acting on p-amino-acid-containing peptides appears to be somewhat limited when compared with those acting on peptides composed on L-amino acids. Less than ten D-stereospecific enzymes are hitherto known. This review describes about several novel D-stereospecific peptidases and amidases of microbial origin, including D-aminopeptidase (E.C. 3.4.11.19), alkaline D-peptidase, and D-amino aicd amidase, which are applied to the synthesis of D-amino acid/or D-amino acid derivatives.

• Tribology and Lubricants
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• 제20권3호
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• pp.163-167
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• 2004

Reducing friction torque of the oil hydraulic vane pump used as the power source of power steering system should consider friction torque including viscous and mechanical friction torque according to the changes of rpm and pressure. This paper analyzes the forces acting on the vane to reduce the friction torque of the vane of the hydraulic vane pump used for Hydraulic Power Steering(HPS) system, and futhermore, the forces according to the shapes of cam profiles are analyzed.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.927-932
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• 2001

It is intended to develope an algorithm for dynamic simulation of fast-acting solenoid valves. The coupled equations of the electric, magnetic, and mechanical systems should be solved simultaneously in a transient nonlinear manner. The transient nonlinear electromagnetic field is analyzed by the Finite Element Method (FEM), which is coupled with nonlinear electronic circuitry. The dynamic movement of the solenoid valve is analyzed at every time step from the force balances acting on the plunger, which include the electromagnetic force calculated from the Finite Element analysis as well as the elastic force by a spring and the hydrodynamic pressure force along the flow passage. Dynamic responses of the solenoid valves predicted by this algorithm agree well with the experimental results including bouncing effects.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2000년도 가을 학술발표회 논문집
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• pp.407-414
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• 2000

This paper presents measured deformation of geomembrane installed on slopes of a landfill. The layout of geosynthetics installed on landfill slopes as required by regulations is composed of, in typical, geocomposite, geomembrane, geosynthetic clay liner in turn from the slope. An effort was made to better understand the sources of external forces acting on geosynthetics and their interactions. The results of a field observation indicated that tensile stresses induced on geomebrane were far less in magnitude than predicted by the design method employing mass equilibrium of waste. This was mainly because external forces acting on slopes were not transferred from geocomposite to underlying geomembrane. A simple, but rather rational method for assessing the stability of geosynthetics against tensile stresses was proposed. This method is based on a hypothesis that external forces acting on geosynthetics are the results of downdrag of waste during waste compaction.

• 동력기계공학회지
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• 제21권2호
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• pp.57-63
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• 2017

The large-eddy simulation(LES) was carried out to evaluate the drag and static pressure acting on the blade surface of a small-size axial fan(SSAF) under the condition of unsteady-state, incompressible fluid and three-dimensional coordination. The axial component of drag coefficient increases with the increase of operating load, but the radial components have negligible sizes regardless of operating loads. Otherwise, the static pressures acting on the blade surfaces of SSAF show different distributions around the operating point of D equivalent to the stall. Also, with the increase of operating load, the static pressures acting on the pressure and suction surfaces of blade concentrate at the tips and leading-edges as a whole.

• Journal of Welding and Joining
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• 제23권3호
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• pp.40-46
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• 2005

Air gun has been one of the good tools to press two sheet metals. However, it is not easy to control the acting force precisely. A Servo-gun is a good tool to control the acting force on the workpiece comparing with the air gun. Servo-gun has a higher tensile shear strength and lower indentation depth as well as smaller spatter. Dynamic resistance was obtained according to the acting force and welding current. As the acting force was changed during welding, the welding quality was increased.

• 대한기계학회논문집B
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• 제26권7호
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• pp.959-965
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• 2002

It is intended to develop an algorithm for dynamic simulation of a fast-acting solenoid valve. The coupled equations of electric, magnetic, and mechanical systems should be solved simultaneously in a transient nonlinear manner. The transient nonlinear electromagnetic field is analyzed by the Finite Element Method (FEM), which is coupled with nonlinear electronic circuitry. The dynamic movement of the solenoid valve is analyzed at every time step from the force balance acting on the plunger, which includes the electromagnetic force calculated from the Finite Element analysis as well as the elastic force by a spring and the hydrodynamic pressure force along the flow passage. Dynamic responses of the solenoid valves predicted by this algorithm agree well with the experimental results including bouncing effects.