• TTA Journal
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• s.48
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• pp.105-108
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• 1996

ITU 교토전권위원회(1994) 결의 15와 결의 39에 의거, ITU의 회원제도, 재정 강화방안, 조직체계 등을 폭넓게 재검토하고 작업결과를 ‘98년 전권위원회에 보고하게 될 ITU-2000 Working Group 1차 회의가 ’96년 10월 24$\~$25일 동안 스위스 제네바에서 개최되었다. 본 Working Group은 ‘96년 6월 개최된 제7차 ITU 이사회의 결정에 따라 설립되었으며, 이번 1차 회의에는 Member State(''M'' member)와 Sector member(''m'' member)들로부터 대표 120명이 참석하였다. 한편 금번 회의에서는 본 Working Group에서 검토하여야 할 의제와 관련한 지금까지의 연구결과에 대한 검토와 의제 관련 사안들에 대한 개선 기본방향에 대한 토의, 사무국 구성 승인 및 향후 작업일정 계획 등이 다루어졌다. 본 고에서는 ITU-2000 Working Group의 설립 배경과 임무, 금번 1차 회의 주요내용, 그리고 향후 작업일정계획 등에 대해 소개키로 한다.

• Journal of Navigation and Port Research
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• v.32 no.9
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• pp.737-742
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• 2008

In this paper, we deal with an allocation model of vertical type container yard for minimizing the total ATC (Automated Transfer Crane) working time and the equivalence of ATC working load in each block on automated container terminal. Firstly, a layout of automated container terminal yard is shown The characteristic of equipment which work in the terminal and its basic assumption are given Next, an allocation model which concerns with minimizing the total working time and the equivalence of working load is proposed for effectiveness of ATC working in automated container terminal. Also, a weight values on critical function are suggested to adjust the critical values by evaluating the obtained allocation plan. For ATC allocation algorithm, we suggest a simple repeat algorithm for on-line terminal operation.

• International Journal of Highway Engineering
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• v.16 no.3
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• pp.109-117
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• 2014

PURPOSES : This study analyzes the available working time at work-zone on the Expressway in accordance to the new capacity manual. METHODS : Sensitivity analysis on variables were conducted to calculate the adjusted capacity at work-zone based on previous researches. RESULTS : The main factors which affect available working time at the work-zone were its capacity, number of lanes, terrain and lane width. Other factors have minimal effect on the available working time. Based on the analysis, a calendar of lane closures was suggested. CONCLUSIONS : A series of studies concluded that the capacity at work-zone in the new capacity manual reduced to 76-82% of the existing manual. As such, the available working time decreased. Furthermore, the factors affecting the available working time needs to be considered when making a plan to rehabilitate the distressed pavement.

• Proceedings of the Safety Management and Science Conference
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• 2009.04a
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• pp.69-78
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• 2009

The goal of this study is to propose the effective method of investigating the injurious factors and making improved plans that prevents the workers against musculoskeletal disorders at an autoparts company and the same business field with similar working conditions and process. A questionnaire were adopted to analyze the symptoms of workers' musculoskeletal disorders, and an ergonomic assessment method such as RULA, OWAS were performed to find out harmful factors of workplace and working posture. Based on the result of the evaluation, to enhance the working environment, improvement of worktable, working space, tools, and outfit was suggested, and induction of mechanical system was also suggested. It can be concluded that the method and process described in this paper could be helpful for diagnosing the musculoskeletal disorders and making improvement plans to the autopart company and the same business field with similar working conditions and process.

• Tribology and Lubricants
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• v.26 no.6
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• pp.329-335
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• 2010

Recently, the End-milling processing is needed the high-precise technique to get a good surface roughness and rapid time in manufacturing of precision machine parts and electronic parts. The optimum surface roughness has an effect on end-milling working condition such as, cutting direction, spindle speed, feed rate and depth of cut, and so on. It needs to form the correlation of working conditions and surface roughness. Therefore this study was carried out to presume of surface roughness on end-milling working condition of Al7075 by regression analysis. The results was shown that the coefficient of determination($R^2$) of regression equation had a fine reliability of 87.5% and nonlinear regression equation of surface rough was made by multiple regression analysis.

• Journal of Families and Better Life
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• v.23 no.1 s.73
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• pp.223-239
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• 2005

The purpose of this study is to explore the impacts of personality variables, family variables, job variables, work-family conflict and job satisfaction on life satisfaction of family business workers. The major findings are as follows: 1. There was direct causal effects of job satisfaction, Sunday working level, the duration of the family business, an academic background on life satisfaction of family business workers. 2. Such variables family variables(family size, number of family workers, number of unpaid family workers), working time variables (working hours per a day, saturday working level, flexibility of working time), work-family conflict had indirect causal effects on life satisfaction of family business workers

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2008.11a
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• pp.229-230
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• 2008

We have studied the structural and optical properties of ZnO thin film deposited on glass by RF magnetron sputtering as functions of working pressures. The grain sizes were decreased as the working pressures were increased. The average optical transmissions over all exceeded 80% for ZnO films deposited in 20, 25 and 300m torr working pressures. And the transmission spectra patterns were almost same. While the transmission spectra pattern of ZnO film deposited in 35nm torr was different with other spectra patterns obtained in 20, 25 and 30nm torr working pressures.

• The Journal of Sustainable Design and Educational Environment Research
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• v.6 no.1
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• pp.49-59
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• 2007

The purpose of this study is to propose the type and size of space which is changed working plan as comparison with basic plan. It has been compared basic plan with working plan of 12 educational facilities which was designed basic plan by a professional research organization of educational facilities. The results of this study are summarized as follows; 1) The gross area of elementary school is decreased a course of working plan. But, the meddle and high school's gross area is increased. 2) It was downed 69.28 percent by the area of classroom at the primary school. At the meddle school, 3rd classroom's area increased by 22.65 percent, while 4th classroom's area down 33.98 percent. In case of high school, the area of 4th classroom and public lecture room increased by each 28.23 and 23.17 percent.

• International Journal of Human Ecology
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• v.14 no.2
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• pp.41-51
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• 2013

This study investigated how family capital was associated with the working memory of young school-aged children from immigrant families in the United States using the New Immigrant Survey. Family capital was identified as economic, human, cultural, and social capital, and children's working memory was measured by the Digit Span scores. Poisson regression analysis was used for examining the sample of 428 children from the New Immigrant Survey. Results indicated that cultural capital within the home was positively associated with the working memory of young school-aged children whereas economic, human, and social capital was not. Implications and limitations of the study are also discussed.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.14 no.1
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• pp.66-72
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• 2005

The working tactor of this study, an agriculture machine, is consisted of 4 wheel driving system with gear trains and 4-type wheel steering system. Since technological regions for 4 wheel driving system and 4-type wheel steering system are some large, we divide on two studies on 4 wheel driving system and 4-type wheel steering system This study develops transmission and axle that are very important units for strong working operation because the power of tractor is largely affected by transmission and axle. Even if the development of the power train is some common technology, it is very complicated work and needs many experience know-hows. So, for new given specifications fitted to the working tractor, a kind of new agriculture machine, this study haws out processes that are development of assembly drawing and strength analysis through classical method and CAE software for all internal parts and housing cases.