• 대한안전경영과학회지
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• 제15권4호
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• pp.383-392
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• 2013

In order to promote social responsibility, a company reads to engage in various activities to increase their competitiveness to ensure stable and continuous development. One of the activities is to input human/material resources in order to draw and develop the core abilities of member for the productivity improvement of the company. This study is concerned with capability improvement of members in relation to core company performance, the focus of the study is to identify how education training in a company may contribute to team performance by leaning transfer through empirical study. As a result of this study, it was found that the personality of members, as well as the training programs, within the company can be a significant factor for improving productivity and performance of the company. In addition, team members noted that learning transfer take place when effectively lead through the leadership of a boss and identified that this leadership ultimately has a significant effect on team performance.

• 한국멀티미디어학회논문지
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• 제11권11호
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• pp.1536-1546
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• 2008

인터넷에서 품질 보장형 서비스를 지원하는 RSVP-라우터는 WFQ 기반의 패킷 스케줄러를 탑재하여 트래픽 흐름들이 요구하는 서비스 품질을 보장한다. WFQ 기반 RSVP-라우터의 성능을 개선하기 위해 LOFQ(Latency optimized fair queuing) 기반 RVP-라우터가 제안되었으나 RESV 메시지의 확장을 요구하며 시뮬레이션을 통해서만 성능을 평가할 수 있었다. 본 연구에서는 기존 RESV 메시지를 사용하는 LOFQ 기반 RSVP-라우터를 제안하고 라우터의 성능을 분석하는 알고리즘을 개발하여 두 가지 방식의 LOFQ 기반 RSVP-라우터의 성능을 평가하였다. 평가 결과 패킷 크기가 작을 경우 제안방식이 확장 RESV 메시지를 사용하는 방식보다 낮은 성능개선 효과를 보이지만 패킷 크기가 큰 영역에서는 동일한 성능개선 특성을 보였다.

• 수산해양교육연구
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• 제25권2호
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• pp.349-363
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• 2013

Using data from 286 employees who were working in medium and small company in Busan, the study analyzed the influence of educational training program traits perceived by employee on organizational effectiveness and job performance. The main results were as the followings. First, for organizational effectiveness, job relation and objective setting among educational training program traits had statistically significant influence on job satisfaction and involvement in organization after controlling the employee's characteristics. Second, for job performance, after controling the employee's characteristics, job relation, educational method, educational training environment, and objective setting had statistically significant influence on active participation, the improvement of task performance ability and confidence, or professional knowledge improvement. Additionally, among the employee's characteristics, the number of educational training participation was statistically significant predictor for job performance. Based on the main results, some suggestions and the limitations of the study were discussed.

• 전기전자학회논문지
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• 제18권1호
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• pp.114-118
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• 2014

본 연구에서는 디젤 차량용 통합형 연료히터와 성능검사 시스템구현을 통해 생산공정을 개선한다. 센서와 히터가 분리된 연료히터를 히터내에 센서를 안착시켜 통합함으로써 일체형 통합히터를 개발하고, 성능평가 시스템 개발을 통하여 시험한다. 이때 성능평가 시스템은 통합히터를 구성하는 body, upper plate, stopper, lower plate, PTC, screw, 바이메탈 및 외부 터비날의 특성을 분석하고, 통합히터의 생산성을 결정한다. 저온 유동성시험장치에서는 극저온에서 고온사이 동작검사, 시험저항 설정에 따른 저항동작지연 및 전류동작지연, 온도변화에 따른 바이메탈 지연 검사, 블록히터의 전류 및 저항 검사, 히팅 운전검사 등을 수행한다. 따라서 효율적인 생산공정 과정을 통해 연료히터의 성능을 개선하는 생산공정 개선 알고리즘을 제시한다.

• 대한기계학회논문집
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• 제14권6호
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• pp.1464-1473
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• 1990

Optimal design parameters are estimated from the sensitivity function and performance index variation. Suspension design modification for performance improvement and basic materials for practical applications are presented. The linear quarter model of a vehicle suspension is analyzed in order to represent the utilities of sensitivity analysis, and sensitivity function is determined in the frequency domain. The change of frequency response function is predicted, which depends on the design parameter variation and the property is verified by computer simulation. As an investigation results of sensitivity function for the vibrational amplitude of sprung mass to road profile input, it is shown that the most sensitive parameters are the suspension damping and the suspension stiffness. In order to identify the effects of these two parameters to the performance of suspension system, the performance index variation according to the changes of parameters is considered and then optimal design parameters are determined. It is verified that the system response is improved noticeably in the both of frequency and time domain after the design modification with the optimal parameters.

• 전자공학회논문지A
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• 제31A권4호
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• pp.11-20
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• 1994

The error rate equation of DS-CDMA/DQPSK skgnal adopting ARQ scheme has been derived in indoor radio channel which is characterized by AWGN, multi-user interference (MUI) and Rician fading, Using the derived equation the error performance has been evaluated and shown in figures as a function of direct to diffuse signal power ratio(KS1rT), the number of active users (K), PN code sequence length (N), the number of parity bit of linear code (b), forward channel BER, and ES1bT/NS1OT. From the results it is known that in severe fading environments (KS1rT=6) the performance of DS-CDMA/DQPSK system is not reliable so it is needed to adopt techniques for improvement. When an ARQ scheme is adopted, as a method for improving error performance, the performance improves compared with that of non-ARQ scheme and the degree of improvement is proportional to the number of parity bits of linear code. As increasing the number of parity bits, system performance is improved vut system throughput efficiency must be considered. In severe fading channel Hybrid ARQ scheme is more effective than ARQ scheme. As a result, ARQ scheme is appropriate for the high-reliability data communication systems over the radio channel in which the real time processing is not required.

• 한국항해항만학회지
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• 제37권5호
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• pp.471-480
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• 2013

Pay-for-performance plans are some of widely used human resource practices in many firms, including shipbuilding, for productivity and motivational improvement purposes. Such plans play an important role in industries that are highly labor-intensive, and where effective management of human resources is critical to business operations, such as the shipbuilding industry. Those practices can have large impact on employee performance and ultimately company competitiveness. Research studies that show how such incentive plans improve productivity and reported pattern of adoption by firms have spurred the use and adoption in many firms. However, there are also researchers who point out that there are negative consequences to using incentive plans. Therefore it is important for companies to carefully consider the practices they use. In this paper, I discuss research findings that support the practices and critical viewpoints related to pay-for-performance plans. Research findings from Korean literature are, then, discussed. The shipbuilding industry is chosen because proper human resource management is critical in reducing turnover and increasing employee satisfaction. Through a shipbuilding company case, problems related to using pay-for-performance incentive plans and how they affect work-related issues of employee morale, cooperation, and teamwork will be discussed. While positive aspects have been emphasized to drive greater adoption among firms, the resulting consequences of the pay plans need to be seriously considered and improvements upon the plans made by firms. Improvement suggestions are discussed in the conclusions and implications.

• KIEAE Journal
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• 제11권6호
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• pp.29-35
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• 2011

This study aims to suggest improvement plans and explain about the current situation for facilitating Long-life housing, based on the results on flexibility items among 27 items consisting the "Housing Performance Grading System". From the 9th of January, 2006 to the month of July in 2011, study has analyzed evaluation results on 216 different types for each grade and reviewed evaluation criteria and methods. Current evaluation criteria applies quantitative analysis, by calculating in percentage how much bearing walls and columns, which hinder flexibility, take up space in the household. The evaluation rate for each household was assessed in relation to its structural system, and a higher grade was given to column-typed structures. In addition, to facilitate long-life housing, this study extracted harmful factors, expanding the range of evaluation. The first step was to evaluate structure, which is the basic element. The second step can to evaluate the probability of applying resources in response to the changes of structural systems. As The third step, Flexibility item will evaluate the probability of moving the water-using area, suggesting gradual approach. Thus, through evaluations of flexibility items, the study aims to improve the quality of life in household, by avoiding uniform structures and acquiring more freedom for space designs.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2004년도 유체기계 연구개발 발표회 논문집
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• pp.572-577
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• 2004

This paper presents numerical study on the performance improvement of the sirocco fan in a range hood. The performance of sirocco fan means a higher flowrate, a higher static pressure and a lower required motor power in a fixed geometry constraint. Various impeller geometric parameters, such as blade profile, blade diameter, blade thickness profile and blade exit angle, were investigated by numerically and the results were compared with each other to know the effects on the performance. In this approach, the volute geometry were fixed with the original shape. The numerical results show that the blade profile with airfoil shape and small exit blade thickness increases the performance. The blade exit angle shows optimum angle within a varied range. The efficiency of the optimized exit angle was about $10\%$ higher than the base blade exit angle and the static pressure was about $28\%$ higher at the flow coefficient 0.22.

• 대한안전경영과학회지
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• 제21권4호
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• pp.67-74
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• 2019

Visual inspection is regarded as one of the critical activities for quality control in a manufacturing company. it is thus important to improve the performance of detecting a defective part or product. There are three probable working modes for visual inspection: fully automatic (by automatic machines), fully manual (by human operators), and semi-automatic (by collaboration between human operators and automatic machines). Most of the current studies on visual inspection have been focused on the improvement of automatic detection performance by developing a better automatic machine using computer vision technologies. However, there are still a range of situations where human operators should conduct visual inspection with/without automatic machines. In this situation, human operators'performance of visual inspection is significant to the successful quality control. However, visual inspection of components assembled into a mobile camera module belongs to those situations. This study aims to investigate human performance issues in visual inspection of the components, paying more attention to human errors. For this, Abstraction Hierarchy-based work domain modeling method was applied to examine a range of direct or indirect factors related to human errors and their relationships in the visual inspection of the components. Although this study was conducted in the context of manufacturing mobile camera modules, the proposed method would be easily generalized into other industries.