• 가정과삶의질연구
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• 제14권4호
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• pp.175-190
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• 1996

The purpose of this study was to investigate the relationships of resource financial events coping strategies and family financial satisfaction. The data were collected from 499 housewives in Seoul. The major findings: 1. The financial events were categorized into 6 factors. The factors were named as related to 'Family' 'Health' 'Money' 'Car & durables' 'Job', 'Housing'. Among these events respondents who had exprienced housing-related event reported the highest level of financial stress. 2. The coping strategies were categorized into 4 factors: 'Delaying payment' 'Borrowing' 'Economical purchasing' 'Using Worth' The most frequently used 'Economic purchasing' strategy. 3. Various coping strategies were differently used depending on financial events. For example the housewives used 'Economical purchasing' strategy to cope with family-related events and used 'Borrowing' strategy to housing-related events. Housewives who had less income and less net-worth used ' Economic purchasi g' strategy. 4. Job-related events were negatively effect to family financial satisfaction but car & durables-related event were positively effect to family financial satisfaction. Housewive who the more income and the less age had the high satisfaction. 'Delaying payment' and 'Economical purchasing' strategies were negatively related to family financial satisfaction.

• 대한토목학회논문집
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• 제35권1호
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• pp.93-99
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• 2015

본 연구는 RC 휨부재에서 동일한 안전율을 갖으면서 경제성을 확보할 수 있는 휨 철근비를 결정하는 방법에 관한 실용적 연구이다. 재료비 및 인건비를 고려하여 공사비 함수를 구성하였고, 최저공사비를 유도하는 경제적 휨 철근비를 결정하는 식을 제안하였다. 제안식을 통해 단철근보의 최적 철근비는 0.65~1.0%를 추천하였다.

• 전기의세계
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• 제16권5호
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• pp.37-50
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• 1967

The economical design of steel towers fortrausmission line. This study has been made on the design criteria of steel towers for power trasmission line adopted in the United States of America, France, Japan and Korea in order to find out any access to design the economical steel twers in Korea following to our own climate conditions. As the result of this study, involved in this description. Writer belive that the weight of steel towers can be saved by 10% to 20% approximately on the steel towers which will be constructed in the near future in Korea, by the possibility of reducing the design wind pressures on towers and cables in those areas of inland of Korea, the increase of number of standard towers from four types to five, the adoption of comparative narrower base towers than those in past practice and improvement on the assumption of manimum delection angle of suopension type insulator strings.

• 한국건축시공학회지
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• 제1권1호
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• pp.135-142
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• 2001

This study is for the investigation of form using the aluminum-compound metal frame(Aluminum frame reinforced panel : AFR panel) which is improved in the capacity in the wall-concrete structure in steal of using the existing form which has problems such as, excessive exposure of cement, the loss of labor when it is constructed or disjointed, and it's economical efficiency compared with that of EURO Form. AFR panel passes the KS F 8006 test, and as a result of field test, it's displacement is satisfied with Specification. And using AFR panel is more economical than that of EURO Form because saving labor cost which plays a major part in cost saving in formwork is more effective in retrenching total cost than increment of material cost.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.2057-2058
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• 2011

We have studied that a effect saving temperature of instantaneous heater using an economical bidet due to change Silicon-Tube. The results, we have found that the existing instantaneous heater is reduced 15 [%], 20 [%] better than a new product instantaneous heater as a discharge water [${\ell}$/min] with temperature and ${\nabla}$ value, respectively. Therefore, we have showed that the innovative effect of a working process and the cost reduction because an economical bidet due to change Silicon-Tube.

• 전기학회논문지
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• 제59권9호
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• pp.1523-1529
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• 2010

This paper describes the distribution power system econimical PQMS(Power quality monitoring system) of Utility. Recently, the korea power quality standard has been established based on the IEC Std. By IEC Std., the power quality assessment point is measured in PCC(Point of common coupling). In this case, the utility has to construct PQM system in all customer PCC point and the PQ meter cost would be very high in order to acquire the suitable data. Also the distribution system would be encounter the communication overload problem due to the huge data. Accordingly the utilities could not apply to PQM system in the distribution power system by the cost and communication problem. In this paper, the proposed economical PQMS has the voltage and current signal reiteration function and FFT operation function is transferred the server. Also the voltage and current measurement channels are minimized by a classified substation construction.

• 수산해양기술연구
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• 제41권1호
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• pp.85-91
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• 2005

The existing fisheries managers ignored the fishery environment changes, have built competitively vessels of efficiency superiority with related corporations, and have captured indisciminately fisheries resourecs. The economical engine horsepower selection model for fishing vessels shorter than 24m is developed. Also, the economical engine horsepower selection model system is verified by the existing vessels, and the optimum vessel scale and engine horsepower classified by the type of fishery and scale are proposed.

• 설비공학논문집
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• 제24권10호
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• pp.733-738
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• 2012

It is important issue to reduce the electric energy to save the operating cost of HVAC system. Even if electrical energy is the clean energy, it is difficult and takes high cost for storage of electricity. These cause the high peak load of electric energy for HVAC in summer season. In korea, government impose the electric charge with several grade for the purpose of cut-off the peak load of electricity. Government has a policy to support to design and install the heat/ice storage system using midnight electricity. In this study, analysis of cooling load and operating characteristics for ice storage system are performed. And, also economical efficiency is compared between ordinary charge system of electricity and midnight rate charge of electricity. The systematic and economical supports are needed for expansion of usage of energy saving equipments.

• 한국초전도ㆍ저온공학회논문지
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• 제3권2호
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• pp.10-14
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• 2001

This paper presents the possible application of a HTS superconducting power cable fro transmitting electric power in metropolitan areas, reflecting its important distinction such as compactness for installation in underground ducts and considerable efficiency improvement comparable to present underground cables. In this paper, we investigated characteristic and market scale compact HTS transmission cable which is possible to install in under-ground ducts. and reviewed its economical efficiency comparing to present existed CV cable construction and duct or tunnel installation.

• 한국초전도저온공학회:학술대회논문집
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• 한국초전도저온공학회 2001년도 학술대회 논문집
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• pp.108-111
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• 2001

This paper presents the possible application of a HTS superconducting power cable for transmitting electric power in metropolitan areas, reflecting its important distinction such as compactness for installation in underground ducts and considerably economical efficiency comparable to present underground cables. In this paper, we investigated characteristic and market scale compact HTS transmission cable which is possible to install in underground ducts. And reviewed its economical efficiency comparing to present existed CV cable from point of view such as cost for cable construction and duct or tunnel installation.