• 대한안전경영과학회지
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• 제19권4호
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• pp.209-219
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• 2017

Logistics companies want to be competitive companies in fierce logistics market and are worrying about securing of differentiated competitiveness for it. The standards judging if logistics industry maintains the competitiveness are based on the satisfaction of users due to the well-established service system that can response not only economic feasibility of logistics costs such as transportation costs, storage costs, unloading charges, information costs, etc. but also diversity and upgradability of logistics needs. Therefore, this study focuses on seeking of service quality improvements with VBSD(Value Based Service Design) model focusing on customer value factors based on Kano model and QFD based service design approach from angles of customer value improvement and service costs reduction.

• 전기학회논문지
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• 제67권10호
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• pp.1278-1285
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• 2018

For saving electricity bill, energy storage system(ESS) is being installed in factories, public building and commercial building with a Time-of-Use(TOU) tariff which consists of demand charge(KRW/kW) and energy charge(KRW/kWh). However, both of peak reduction and ESS special tariff are not considered in an analysis of initial cost payback period(ICPP) on ESS. Since it is difficult to reflect base rate by an amount of uncertain peak demand reduction during mid-peak and on-peak periods in the future days. Therefore, the ICPP on ESS can be increased. Based on this background, this paper presents the advanced analysis method for the ICPP on ESS. In the proposed algorithm, the representative days of monthly electricity consumption pattern for the amount of peak reduction can be found by the k­means clustering algorithm. Moreover, the total expected energy costs of representative days are minimized by optimal daily ESS operation considering both peak reduction and the special tariff through a mixed-integer linear programming(MILP). And then, the amount of peak reduction becomes a value that the sum of the expected energy costs for 12 months is maximum. The annual benefit cost is decided by the amount of annual peak reduction. Two simulation cases are considered in this study, which one only considers the special tariff and another considers both of the special tariff and amount of peak reduction. The ICPP in the proposed method is shortened by 18 months compared to the conventional method.

• 정보화연구
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• 제11권1호
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• pp.81-88
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• 2014

본 연구는 우리나라 창업 중소기업의 4대 보험 경감에 따른 경제적 효과에 관한 연구다. 우리나라의 사회보험지원 및 해외 여러 현황 고찰을 통해 사회보험료 직 간접 지원, 사회보험료 면제, 사회보험료 유예 또는 융자의 4가지 제안을 제안했다. 경제적 효과 분석을 위해 편익과 비용 요소를 도출했으며 4대 사회보험 경감 정책을 통해 발생 가능한 편익 항목으로는 고용창출, 부가가치창출, 세수증대 효과를 분석했으며 각 대안별 비용을 추정했다. 보험료 면제의 경우 비용 추정이 현실적으로 어려워 분석에서 제외시켰다. 분석 결과, 보험료 직접 지원 및 보험료 유예/융자로 인해서는 563,469명의 고용 창출 효과가 있었으며 26.82조 원의 부가가치창출 효과, 824억 원의 세수증대 효과가 있는 것으로 추정되었다. 보험료 세액 공제인 간접 지원인 경우, 각각 105,368명, 5.02조 원, 154억 원의 효과가 있었다. 또한 각 대안에 대해 각각 9.58조 원, 5.42조 원, 1.79조 원의 비용 발생이 있는 것으로 추정되었다.

• 약학회지
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• 제51권5호
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• pp.327-335
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• 2007

This study was to evaluate economic impact of a comprehensive pharmaceutical care intervention provided by community pharmacists on drug-related morbidity and mortality in the elderly population, in a societal perspective. Clinical outcomes of pharmaceutical care included compliance increase, inappropriate medication discontinuation, and subsequent drug-related morbidity and mortality reduction. Economic outcomes included cost savings from direct medical costs reduction such as medication and healthcare resource utilization. Input costs for pharmaceutical care included pharmacist time and computerized prescription review supporting program costs. Model parameters of outcomes were derived from published literatures, and costs were from literatures and health insurance statistical data in Korea. Annual costs and benefits were estimated in the year 2005. Current usual care and standardized pharmaceutical care required 0.3 and 2.0 hours per year respectively, for elderly outpatient using average 4.4 prescription drugs per visit and average annual frequency of 17.8 pharmacy visits. Comprehensive pharmaceutical care provided to overall elderly outpatients at community pharmacies would have cost of \74,994 mil. and benefit of \357,002 mil. per year. Benefit:cost ratio was 4.8:1 and net benefit was \282,008 mil/year. It was corresponded to net benefit of \73,816/year for individual elderly patient. In addition, pharmaceutical care was estimated to reduce 1,531 drug-related deaths/year. Conclusively this study, a first attempt in Korea to evaluate an economic value of pharmaceutical care at community pharmacies, proved that it was a cost-effective intervention having significant economic benefit.

• 디지털산업정보학회논문지
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• 제12권3호
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• pp.299-309
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• 2016

This study proposed a logistics plan for sending supply to be distributed to areas other than producing areas to wholesalers and allocating supply to be distributed to areas near producing areas to local distribution center in the vicinity instead of shipping the entire quantity to wholesalers for fruits auction to increase the competitive edge of the domestic fruits and vegetables logistics market in the ear of infinite competition. A video auction-based short distance division logistics operation model was developed to enhance competitiveness related to the circulation of fruits and vegetables, reduce logistics costs, and rationalize logistics by distributing the items sent to wholesalers through field auction and the shipments at local distribution center to neighboring areas through video auction connected to wholesalers real-time. The study especially came up with a logistics rationalization plan by examining and analyzing the stages and costs of transportation between producing areas and wholesalers on the circulation routes of fruits.

• 한국건설관리학회논문집
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• 제7권6호
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• pp.202-211
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• 2006

Rework in the construction industry can adversely affect project cost and schedule performance. Based on direct rework costs recorded on 359 construction projects, this paper presents an assessment of the magnitude of rework by various types of projects and sources of rework. The results from this paper establish that on average 4.5% and 2.5% of actual construction costs were spent on rework for owner and contractor projects, respectively. Furthermore, this paper determines that the direct rework costs differ by project types and sources of rework. Finally, it permits the development of rework reduction initiatives. By quantifying and recognizing the different magnitude of rework, the industry can be aware of the waste from rework and develop effective plans for managing rework, ultimately improving project cost performance.

• 한국산업보건학회지
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• 제19권1호
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• pp.51-63
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• 2009

In the field of ergonomics, it is evident that participatory action research methodology could contribute to reduce risk factors of work related musculoskeletal disorders(WMSDs). The objective of this study was to evaluate the effectiveness of a participatory ergonomics in reducing the incidence rate and severity of WMSDs in the tire manufacturing company. In this study, an action committee comprising 13 members was organized in the tire manufacturing company. The action group participated at every research process, education and training, assessment and intervention of risk factors, and early detection and management of WMSDs during the 3 years(2004-2006). The prevention programs contributed to an overall reduction in incidence rate by approximately 37.2%, and lost workdays and workers' compensation costs by approximately 55.1%. But, the incidence rate increased 29.0%, and compensation costs increased 59.0% in the first-year setting programs, and both the incidence rate and compensation costs decreased after the second-year managing programs. And, the reduction rates(63.2%) of insurance cases is higher than that(9.7%) of non-insurance cases. The results showed that participatory ergonomics programs may be effective in reducing the incidence and severity rate of WMSDs.

• 수산해양기술연구
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• 제56권3호
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• pp.258-264
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• 2020

This study aimed to analyze the economic feasibility of the reduction of working safety accidents in stow net fishery through the prevention education to fishing crews. The benefit was evaluated by estimating insurance payment amount that was reduced through prevention education. The decreasing rate of working safety accidents was presumed to follow the experience in Japan. The cost was assumed as the cost of textbook development. Results indicated that IRR was estimated to be 79.9% in case of scenario assuming no additional operating costs while IRR was 56.3% in case of scenario assuming 10% additional operating costs. In addition, the economic feasibility would be secured when annual operating costs increased to 274 million won according to the result of sensitivity analysis.

• 한국조경학회지
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• 제27권2호
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• pp.19-28
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• 1999

This study quantified shading, evapotranspiration and windspeed-reduction effects of trees on use and cost of heating and cooling energy in two residential neighborhoods of Chuncheon different in tree cover. Annual savings per residence of heating energy were approximately 1,210 MJ(1%) and those of cooling energy, 130 kWh(10%) in study district 1 having tree cover of about 10% . For district 2 with tree cover of about 20%, annual heating and cooling savings were 2,130 MJ(2%) and 180 kWh(19%) per residence, respectively. Trees annually saved energy costs by approximately ￦31,000 ($26, $1=￦1,200) per residence in district 1 and by ￦49,000($41) in district 2. One tree taller than 3 m resulted in annual energy savings of ￦8,000($7) in the study districts. Energy savings by trees in district 2, which had higher tree cover by 10% difference than district 1, were about 2 times greater than those in district 1. This implies that more tree plantings could enhance energy saving effects. Of the total costs saved, 58% was attributed to windspeed reduction and 47%, evapotranspiration. However, shading increased energy costs by 5% due to tree plantings at the wrong locations. Full tree plantings on the west and north of buildings and avoidance of shade-tree plantings of use of solar-friendly trees on the south are recommended to increase building energy savings efficiently.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.66-67
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• 2016

Modular construction is attracting attention as the solution of recent problems in construction site. Such as lack of construction workforce, increasing labor costs, work delay due to extreme weather events and strengthening government regulations. However, despite the many advantages, Modular construction has not been activated dueto high construction costs compared to other construction methods. Accordingly, the object of this study is priority derivation of prefabricated house cost reduction factors and use as basic research data. For research performance, we have analyzed the blueprint and bill of quantities of a modular construction based public dormitory which was built in 2013. In result, the proportion of modular construction and on-site construction is 66% and 34%, and the construction cost proportion by activity was devided in to construction(79%), machinery(7%), electricity(5%) and civil(9%). Among these results in order to reduce costs, interior finishing(19.4) steel-frame(16.9%), metal works(13.5%), RC(11.8%), joinery(7.3%) is the order requires focused management.