• Proceedings of the Korea Water Resources Association Conference
• /
• 2015.05a
• /
• pp.647-647
• /
• 2015

본 연구는 새만금 유역에 잔디초생대 적용 시 수질오염 저감효과와 적용비용을 산출해 보았다 또한 초생대 본래의 기능 외에 잔디의 활용성에 대해서도 평가해 보았다. 새만금유역 내 익산시 밭경지에 세로 22m${\times}$폭 5m 규모로 대조구 1개소, 처리구 2개소를 각각 조성하여, 처리구 말단에 세로 2m${\times}$폭 5m 규모의 잔디 초생대를 조성하여 실험을 수행하였다. 시험포의 경사는 8%이며, 토성은 양토로서 토양배수등급이 양호한 것으로 조사되었다. 연구기간동안 모니터링 실시한 강우에 대해 각 시험구별로 측정된 유출과의 관계를 분석한 결과 초생대 처리구의 대조구 대비 유출저감 효과는 14.1~64.0%로 나타났으며, 비점오염저감효과는 SS 9.8~73.9%, T-N 24.0~84.2%, T-P 31.6~80.9%으로 나타났다. 잔디초생대 적용시 소요되는 총비용의 산정은 초생대 조성을 위한 잔디구입비 및 관리비용, 초생대 조성 면적만큼의 작물재배 포기로 인한 손해비용 등을 고려하여 산출하였다. 그 결과 초생대 조성을 위한 잔디구입 및 조성비용과 유지관리비용은 1,730천원/ha로 소요되는 것으로 산정되었으며,, 초생대 구역의 작물 재배포기로 감수해야 할 손해비용은 1,649천원/ha로 산정되어 잔디초생대 적용을 위한 총비용은 3,379천원/ha/year로 산정되었다. 또한 차년에는 조성비용은 제외할 수 있으므로 유지관리비용 및 손해비용만을 고려한 1,899천원/ha/year이 소요되는 것으로 산정되었다. 잔디의 활용성 평가는 초생대가 완전 피복된 후 잔디를 일정부분 떼어 내어 판매할 경우를 고려하여 파악해 보았다. 그 결과 초생대 40% 규모의 잔디를 떼어내 판매할 경우에 발생할 수 있는 수익은 1,260천원/ha/year으로 추정되었으며, 떼어낸 부위의 잔디 재활착은 정상적으로 진행됨을 파악하였다. 따라서 잔디초생대는 새만금유역의 수질오염 저감효과 뿐만 아니라 잔디판매를 통한 농민 소득증대에 기여할 수 있으므로 초생대의 현장 적용성은 매우 높을 것으로 기대된다.

• Journal of the Korean Society for Library and Information Science
• /
• v.35 no.1
• /
• pp.249-264
• /
• 2001

This paper describes the results of a cost-effectiveness analysis on the usage of foreign scientific and technical journals. In this study, the measure of cost-effectiveness chosen is the Cost Per Use(CPU) of a journal article. The photocopy usage data and annual subscription costs of journals subscribed by Korea Institute of Science & Technology Information were used. The results of this study illustrate that distribution of subscription cost and photocopy usage, Cost Per Use(CPU) of each journal, CPU of each subject field, etc. 80 percent of the demand for the journal was met by 40 percent of total subscription cost. A relationship was found between subscription cost and photocopy usage, however, no relationship was found between subscription cost and CPU.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.22 no.4
• /
• pp.345-352
• /
• 2021

The Republic of Korea Army (ROK Army) is trying to improve the effectiveness of education and training. On the other hand, there are many restrictions in actual training, limiting their practical education and training. Virtual reality technology is being used to overcome these limitations. Virtual reality technology is developing in various types, and the ROK Army needs to introduce a virtual reality training system for cost-effective education. The ROK Army mainly uses high-cost simulator-types that are similar to real equipment. Recently, a low-cost immersive-type virtual reality training system wearing an HMD is also being used. This study analyzed the cost education effectiveness of simulator-type and immersive-type virtual reality training systems in operation at the ROK Army air defense school. First, the research method used AHP to analyze the educational effects. Second, the cost was applied to the production cost of the virtual reality training system to analyze the cost-effectiveness of the education. The immersion-type was 3.4 times higher than the simulator-type in terms of cost effectiveness. These results can be used as basic data for analyzing the cost-effectiveness of a virtual reality training system.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2021.06a
• /
• pp.304-304
• /
• 2021

도시화가 진행됨에 따라 불투수지역이 늘어나는 등 개발전과 다른 지표 및 지표하 유출이 나타나며, 이러한 변화는 생태적, 수문학적으로 대규모 변화가 나타나는 것을 의미한다. 이에 따라 물관리, 물순환 등 물 지속 가능성은 대중의 관심을 받아 법, 제도가 변화하며 도시화에 대한 세심한 접근과 관리에 대한 계획이 대두되고 있는 실정이다. 저영향개발(Low Impact Development)은 이러한 도시화로 인해 발생될 수 있는 문제를 해결하기 위한 방안의 하나로 제안되고 있으며 첨두 및 유출총량을 완화하여 개발 이전 상태의 수문학적 기능을 유지하거나 물리학 및 생물학적 기작을 통해 오염물질의 저감효과도 나타나 대규모 도시개발 및 유역관리 사업에서 저영향개발기법의 적용이 점차 늘어나고 있는 추세이다. 그러나 저영향개발기법 설치에 관한 구체적인 매뉴얼 또는 가이드라인이 부족한 실정이기 때문에 저영향개발기법이 계획단계에서 양적으로 무분별하게 적용되어 비용적 측면에서 시공자에게 부담을 가중시키는 등의 문제가 발생한다. 또한 시설의 위치에 따라 강우유출수 및 비점오염원 저감에 대한 효과가 상이하기 때문에 시설의 적정 위치선정 및 시설용량, 경제성을 고려한 시설효과 검토 등 저영향개발기법 적용시 사업부지 특성에 따른 최적화를 고려하여 계획 및 설계에 적용할 필요성이 있다. 이에 비용적 측면을 고려한 최적설계가 가능한 SWMM-ING(Storm Water Management Model - Low impact development desigN proGram)을 개발된 바 있다. SWMM-ING은 비전문가도 사용이 가능하도록 저영향개발기법 최적화과정이 간단하고 직관적이며 비용을 고려한 최적설계가 가능하도록 개발된 소프트웨어로 기법 적용시 개략적인 비용추정 및 배치선정 등 저영향개발기법의 설계최적화가 가능하다. 또한 각각의 저영향개발기법에 대한 초기설치비용, 유지관리비용, 이자율, 기대수명, 대상지역 내 공간적 위치를 반영하여 강우유출수 및 비점오염저감효과를 시나리오별로 제시가 가능한 장점이 있다. 본 연구에서는 SWMM-ING를 이용하여 대규모 도시개발부지의 저영향개발기법 적용에 따른 유량 및 수질저감효과를 평가하고 유지관리비를 포함한 비용을 추정하여 최적설계 검토를 수행하였다.

• Journal of Korean Society of Transportation
• /
• v.18 no.2
• /
• pp.17-26
• /
• 2000

LOS(Level of Service), the qualitative measure describing operational condition of highway, must be evaluated as quantative index in terms of user service. So, This study is focused on developing the user cost function that user cost is measured in the variation of V/C, MOE(Measure of Effectiveness) of LOS in basic Section of highway. The user cost is calculated as the sum of accident cost, operation cost, travel time cost. The data is collected in the four basic section of Singal-Ansan and Jung bu Highway. As the result of user cost function analysis, the user cost is the lowest When V/C is 0.54. Considering the V/C ratio(0.7) of Basic Section in rural highway suggested in KHCM, We find out that the LOS suggested KHCM increase the user cost of highway.

• Journal of Information Technology and Architecture
• /
• v.11 no.1
• /
• pp.81-88
• /
• 2014

This study is about the suggestion of reduction method for social insurance cost of startup SMEs Based on the study abroad and the current status of Korea we suggest several methods such as direct and indirect support, exemption, deferment/loan. For the economic effect analysis, we derived benefits and costs. Employment, value added, and revenue increasing effects are considered as benefits. Costs are analyzed by each method. In case of exemption, the analysis is impossible. Analysis results show that direct and deferment/loan case have an effect of 563,469 jobs creation, added value of 26.82 trillion wons, and increase in tax revenues about 82.4 billion wons. In case of exemption, There are 105,368 jobs creation, 5.02 trillion wons of added value, and 15.4 billion wons of increase in tax revenues. And for each case, there are costs 9.58 trillion won, 5.42 trillion won, 1.79 trillion won.

• Journal of the Korea Society for Simulation
• /
• v.26 no.2
• /
• pp.31-39
• /
• 2017

This paper analyses the effectiveness of Kill Chain (KC) and Korea Air and Missile Defense (KAMD), also known as the K2 systems, using monte carlo simulation. It is assumed that the K2 systems are consisted with unitary KC and multi-layered (upper-tier and lower-tier) KAMD. And each system has two or three arbitrary weapon systems and its combination makes 12 scenarios. Measures of effectiveness (MOE) of the K2 systems were defined as ratio of eliminated ballistic missiles from total threats. And total cost was calculated by number of weapon launched and its unit cost. MOE and total cost of the K2 systems were estimated using monte carlo simulation with a thousand iteration for each scenario. Cost-effectiveness analysis was performed and the best candidate was selected using fixed effectiveness approach. As a result, the performances of KC are prime factor that affects both effectiveness and total cost of the K2 systems. It is also, acquired proper level of lower-tier KAMD to achieve desired defense effectiveness. For future work, it needs to be performed cost-effectiveness analysis based on practical specification and life cycle cost of weapon systems.

• Journal of Navigation and Port Research
• /
• v.30 no.10 s.116
• /
• pp.819-823
• /
• 2006

Since the north port in Busan started to operate in general pier (1, 2, central, 3 and 4), the business area had been expanded to Jasungdae, Shinsundae, Gamman zone and so on However, these zones adjoin the Busan city and have caused problems to both logistics and city activities. The operation of Off-Dock Container Yard (ODCY) is a representative example due to the limited sphere of Container Yard in this city. It increases logistics costs and causes serious social problems as a result of increasing traffic in the trunk roads such as Uam and Chungjang roads. This paper aims to analyze the effects of the reduction in traffic of trunk roads in Chungjan, Uam roads and so on, when General Pier and Jasungdae Pier are Re-developed. The effects of the reduction in social cost from traffic congestion are also analyzed. Finally, we predict and evaluate the effects according to the re-development of two piers, north pier and Jasungdae pier.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• v.1
• /
• pp.275-279
• /
• 2006

Since the North port in Busan started to operate in general pier (1, 2, central, 3 and 4), the business area had been expanded to Jasungdae, Shinsundae, Gamman zone and so on. However, these zones adjoin the Busan city and have caused problems to both logistics and city activities. The operation of Off-Dock Container Yard (ODCY) is a good representative example due to the limited sphere of Container Yard in this city. It increases logistics costs and causes serious social problems as a result of increasing traffic in the truck roads such as Uam and Chungjang roads. This paper aims to analyze the effects of the reduction in traffic of trunk roads in Chungjan, Uam roads and so on, when General Pier and Jasungdae Pier are Re-developed. The effects of the reduction in social cost from traffic congestion are also analyzed. Finally, we predict and evaluate the effects according to the re-development of two piers, north pier and Jasungdae pier.

• Environmental and Resource Economics Review
• /
• v.9 no.1
• /
• pp.1-23
• /
• 1999

배출권거래제도의 비용절감효과를 분석함에 있어 요소간 대체가능성 등 외부환경 변화에 대한 기업의 적응도를 반영하지 않은 공학적 추정치는 그 신뢰성에 한계가 있다. 또한 경제학적 분석방식을 시도한 연구의 대부분이 외부거래만을 대상으로 해온 반면에 거래실적의 다수를 차지하고 있는 내부거래에 대한 연구는 미미한 실정이다. 본 연구에서는 Gollop and Roberts (1985)의 경제학적 추정모형을 이용하여 미국 석탄발전소를 대상으로 $SO_2$ 배출권에 대한 내부거래의 비용절감정도를 측정한 후 효과의 크기 변에서 외부거래와의 차이를 규명하고자 한다.