• 한국산업정보학회:학술대회논문집
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• 한국산업정보학회 1997년도 추계학술대회 발표논문집:21세기를 향한 정보통신 기술의 전망
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• pp.475-488
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• 1997

This study investigated the management environment of medium and small business by examining the role of medium and small business in national economics, the change in management condition, and the problems in quality and technique. Also we analyzed problems in the past quality control activity of our medium and small business, and examined the driving direction and intorduction method of QM. And to understand the effect of manager's concern in quality management to observe the quality system before and after introduction of QM. A target for this investigation is the medium and small business which has introduced QM through ISO 9000. Also analyzed how 05 observance effects to the sale price, process effect customer complaint and on-time delibery by an oral test.

• 한국주거학회논문집
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• 제20권2호
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• pp.27-35
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• 2009

With the change of construction environment, the main body of construction industry was moved from project suppliers to consumers. Accordingly in order to strengthen competitiveness, project suppliers have to concentrate on marketing for diversification. Thus, it is required to utilize real estate marketing from the beginning of development project to introduce 'consumer-centered marketing strategies' instead of 'supplier-centered marketing'. This study aims to find out what consumers consider the most important factors when selecting apartment. According to the study, when residents select their apartment in residential area, they valued those attributes with investment, location, dwelling attribute, apartment complex attribute, unit price per square meter, in order. This result will contribute to qualitative improvement of housing development project.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전력기술부문
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• pp.207-209
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• 2001

Intensive competition in the electricity market and demand for higher quality service force the utilities to change their strategies in setting price and quality combination. As cost-up by homogeneously enhancing the electricity service quality may reduce their competitiveness, differential service is to be taken into consideration. Priority Service, which provides customers with a selection of service options at a range of prices and reliability for all or portions of their loads, has drawn attention from utilities in an increasingly competitive environment. Priority Service is to enlarge service options for customers who have diverse needs for supply reliability. This paper in the light of this point reviews differentiated strategy of power quality in the U.S.A.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 B
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• pp.1275-1276
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• 2006

As developing the information society, Lighting Emitted diode(LED) which is light source for illumination of next generation is attracted public attention. LED have many problem as narrow light view angle, high price, drift phenomenon of color coordinate, high heating problem for lower power, lower weight and small size. So, many researches have continued in a illumination as LED module type. in this problem, heating problem is very important and difficult and that is caused in decreasing phenomenon of brightness and drift phenomenon of color coordinate. so the problem of heating is urgent question for illumination of LED. In this paper, structural design of PCB changed as two type for solving the heating problem. also the properties of heating is analysed and optical properties is measured with heating image camera and spectrometer according to change in this design.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1324-1332
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• 2008

The change of the transportation circumstance related to the deep environmental pollution, escalation of the energy price, increasing social cost of the congestion and traffic accident, improving a income level, advanced social structure etc, is rapidly proceeded. For the corresponding this transportation circumstance, the role of the railway is being increased and that is friendly with environment, efficient for the energy, observed the time schedule and the transportation device which is high speed and safe mass transportation. In addition, government's R&D investment is being increased according to deeping a strength of the international competitiveness through the technical innovation. So railway's R&D investment is being increased. Accordingly, This study suggest improving a fruit of the R&D related to railway R&D system for a efficient R&D investment.

• 설비공학논문집
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• 제13권10호
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• pp.1002-1008
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• 2001

The energy is the basis for almost all industrial activities and domestic needs. But recently there are increasing concerns internationally over environmental problems and consequent climate changes caused by the excessive use of fossil fuels. Furthermore the price of crude oil is increasing steadily with unstable supplies. In order to solve these national energy problems, the utilization of Ocean Energy is introduced as one of the best alterative technologies for the future. OTEC Power Plant has been installed at the West Inchon Power Plant Site. Temperature differences of$20~25^{\circ}C$ been utilized for plant operations, where R22 is used as a working fluid. The system is composed of low pressure turbine, plate type heat exchanger, and pumps. In the present investigation the experimental results, such as gross power, net power and objective function, are analysed when temperature differences change from the reference design point.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.390-398
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• 2008

While road traffic of sharp rise of an international oil price and capital Seoul reaches to critical point, and a use passenger drives recklessly on the subway which is a cradle of public transportation, the depths analyzes an electric power feed system regarding a ground wealth electric car line of the subway Line 2 East Section which is a long distance (Seongsu $\sim$ Gangbyeon), and future, electric power supply Feeder Distribution Center prepares to Operational Headway shortening along an ATO signal method change by feeder increase supplement, and ensure safety to an electric power supply system, and will solve inconvenience of safe operation and use passenger.

• 대한안전경영과학회지
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• 제4권1호
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• pp.81-92
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• 2002

The modern society is changed into mass production, complicated circulation society and mass consuming society because of the development of the fast science technology since the occurrence of the industrial revolution. Also, the human life style is changed into the abundant consumption society because of the appearance of the various products. The society change like the above provide comfortable life to us. but We are facing with danger for the bad food, illegal medicines and bad products. So, To solve the danger like the above, The Product Reliability Law be made. The both The enterprise and consumer need The Product Reliability Law to protect one's own interest. The consumer is claiming to use the product of safety of the resonable price and good quality in modern society, So, 1 studied on countermeasures of domestic enterprise to increase the competitive power of the enterprise according to Product Reliability Law

• 산업경영시스템학회지
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• 제21권45호
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• pp.201-213
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• 1998

We address the problem of choosing the most economic mean value for an automatic filling operation on a production line through the sampling inspection. If quality characteristic of a unit is less than inspection specification then the goods is not accepted. Otherwise, it is accepted. The lots that the numbers of non-conforming units in a sample are larger than the allowable number of non-conforming units are rejected. The non-conforming units in the rejected lots are separated by the screening inspection. The non-conforming units separated are sold in discount price. We assume that quality characteristic is larger-the-better characteristic, the distribution of quality characteristic is normal distribution, and the standard deviation of the distribution is known. This paper presents total expected profit function model considering sales revenue, inspection costs, and material costs. The manufacturing process mean value maximizing total expected profit is determined, and the results of the process target value and total expected profit is analyzed as coefficients change.

• 대한조선학회지
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• 제21권2호
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• pp.1-7
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• 1984

This paper is concerned with an optimum design study of containerships in preliminary stage by applying economic criteria. The Net Present Value Index (NPVI) and the Required Freight Rate(RFR) are used as measures of merit. Hooke & Jeeves direct search method and External Penalty Function method of Sequential Unconstrained Minimization Techniques(SUMT) are used for solving constrained nonlinear optimization problem. Sensitivity analysis is carried out to investigate the effect on the optimum solution due to change of values in some parameters such as crane capacity, load factor, oil price, ship speed and the ratio between loaded FEU and TEU.