True Planning 모델과 공학적 추정법을 활용한 비용분석에 관한 연구

강경환 국제차세대융합기술학회 2024 차세대융합기술학회논문지 Vol.8 No.5

국방 획득사업에서 비용분석이 중요한 이유는 획득방안(연구개발, 국외구매, 국내구매) 검토와 국방중기계 획 수립, 연도 예산(안) 편성을 위한 기본자료로 사용되기 때문이다. 본 연구의 목적은 첫째, 연구개발비와 양산비 용을 추정하기 위하여 모수추정법을 구현한 모델인 True Planning의 비용추정 방법을 제시하는 것이다. 둘째, 정 확도가 높은 공학적 추정법을 제시하고, 모수추정법과 공학적 추정법으로 산출된 비용의 비교를 통해 양개 추정방 법론에 대한 적절성을 분석하는 것이다. 제시한 방법론은 AA탄의 연구개발비와 양산단가 추정에 대한 사례연구를 통해 평가하였다. True Planning을 활용하여 추정된 비용과 공학적 추정법을 활용하여 산출된 비용의 오차는 연 구개발비와 양산단가 모두 0.7%의 근소한 오차를 보였다. The reason why cost analysis is important in defense acquisition projects is that it is used as basic data for reviewing acquisition alternatives(R&D, Overseas purchase, Domestic purchase). In addition, in order to establish a mid-term defense plan and prepare a budget for the fiscal year. The purpose of this study is, first, to present the cost estimation method of True Planning, a model that implements the parameter estimation method to estimate R&D costs and mass production costs. Second, a highly accurate engineering estimation method is presented, and the suitability of the two estimation methodology is analyzed by comparing the costs calculated by the parameter estimation method and the engineering estimation method. The proposed methodology was evaluated through a case study on the R&D cost and mass production cost of the AA-ammunition. The error between the cost estimated using True Planning and the cost calculated using the engineering estimation method was a slight error of 0.7% for both R&D cost and mass production cost

다목적 차량경로문제를 위한 발견적 해법

강경환,이병기,이영훈 대한산업공학회 2006 대한산업공학회 춘계학술대회논문집 Vol.2006 No.5

Drug Rash with Eosinophilia and Systemic Symptoms Syndrome in a Patient on Sulfasalazine for Ulcerative Colitis

강경환,이창균,심재준,장재영,동석호,김병호,장영운,김효종 대한장연구학회 2012 Intestinal Research Vol.10 No.4

Drug rash with eosinophilia and systemic symptoms (DRESS) is a life-threatening systemic drug reaction characterized by fever, rash, hematological abnormalities, lymphadenopathy, and multiple internal organ involvement. Unfortunately, a long latency period as well as clinicians' unawareness of the disease entity often results in a delay of prompt diagnosis and treatment in clinical practice. A search of the literature revealed only few reports on DRESS in patients with inflammatory bowel diseases. The pathogenesis of the disease is not clearly understood, although several possible mechanisms, such as drug detoxification, slow acetylation, and reactivation of human herpes viruses, have been proposed in its development. Here, we present a rare case of DRESS associated with viral reactivation and defects in drug metabolism in a 22-year-old man who had been on sulfasalazine for 6 weeks to treat ulcerative colitis.

품질시스템 선진화 방안

강경환 한국에프디시규제과학회(구 한국에프디시법제학회) 2010 한국에프디시법제학회 학술대회 Vol.2010 No.1

Degradation Characteristics of A Novel Multi-Enzyme- Possessing Bacillus licheniformis TK3-Y Strain for the Treatment of High-Salinity Fisheries Waste Containing Green Seaweed

강경환,김중균 한국수산과학회 2015 Fisheries and Aquatic Sciences Vol.18 No.4

To reutilize fisheries waste, a bacterial strain was isolated from a coastal area located in Busan. It was identified as Bacillus licheniformis TK3-Y. Using plate assay and 500-mL flask experiments, we found that the isolate simultaneously possessed cellulolytic, proteolytic, and lipolytic activities with salt tolerance. 10% (v/v) inoculums, were used to examine the biodegradation characteristics of the TK3-Y strain on carboxymethylcellulose, skim milk, and olive oil media. The optimum conditions for pH, temperature, agitation speed, and NaCl concentration on each 1% substrate were 6, 50°C, 180 rpm, and 17.5%, respectively. Under optimal conditions, the TK3-Y strain showed 1.07 U/mL cellulolytic, 1,426 U/mL proteolytic, and 6.45 U/mL lipolytic activities. Each enzyme was stable within a range of 17.5–35% NaCl. Therefore, the salt tolerance ability of strain TK3-Y was superior to other related strains. In degradation of a mixed medium containing all three substrates, both the cellulolytic and proteolytic activities were somewhat lower than those on each single substrate, while the lipolytic activity was somewhat higher. From the above results, the TK3-Y strain appears to be a good candidate for use in the efficient treatment of fisheries waste in which components are not collected separately.

맞춤형 성과관리시스템 운영사례

강경환 한국인적자원개발학회 2013 한국인적자원개발학회 학술연구발표회 발표논문집 Vol.2013 No.6

특수학교 교사들의 여가교육에 대한 인식

강경환 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.6

진동막분리장치에 의한 반도체폐수처리와 재이용에 관한 연구

강경환 한국환경과학회 2005 한국환경과학회지 Vol.14 No.3

The objective of this research is to evaluate a feasibility of wastewater reuse by membrane treatment with vibrating membrane separation equipment. Molecular weight of compounds in wastewater, permeability of membrane and retentate characterization after membrane filtration were investigated in order to determine appropriate membrane pore size and materials for wastewater treatment. Selected membrane was evaluated with vibration membrane separation equipment to optimize operating conditions. The following conclusion are drawn. 1. We got as following test results after the distribution of particles in the semiconductor wastewater, are made up of 1~20㎛. Si, gold and Al in turn are contained in semiconductor wastewater. 2. Recovery rate is changeless under increasing recovery rate in operation. Though a value can be if pressure can be changed, the highest value of permeate rate is presented in 150 psi. 3. The AS- 100(polysulpone) was selected as the most appropriate membranes for the treatment of semi-conductor wastewater to VSEP system. The fouling almost did not occur during this experiments. The analyses of treated water with VSEP system showed conductivity : 0.059μs/cm, TDS : 40mg/ℓ, COD : 20mg/ℓ, SS : 5mg/ℓ , n-Hexane : 8.3 mg/ℓ . Comparing previous systems, operating expenses is decreased by more 50%.

무인 항공기(UAV)의 성과기반군수지원(PBL)사업 비용분석 방안에 관한 연구

강경환,박지혜 국제차세대융합기술학회 2024 차세대융합기술학회논문지 Vol.8 No.3

국방 분야에서 UAV는 사람을 대신하여 위험한 환경에서 정밀타격, 감시 및 정찰, 수송 등의 다양한 임 무를 수행하고 있다. 우리 군도 다양한 UAV를 운용하고 있으며, 지속해서 추가 획득할 예정이다. 이에 따라, 군 은 UAV의 가동률 향상을 위한 PBL(성과기반군수지원) 사업을 일부 UAV는 적용 중이며, 일부는 적용 여부를 검토 중이다. PBL 시행 시 장비가동률, 조달 기간, 비용 측면에서 효과가 있으나, 향후 PBL 사업 기간 발생할 보 급과 정비 소요를 예측하여 합리적인 비용추정을 한다는 것은 중요한 부분이며 현실적인 쟁점 사항이 되었다. 본 연구의 목적은 사단 UAV PBL 사업비용분석의 사례연구를 통해 PBL 사업을 검토중인 다른 UAV의 사업비용을 추정하는데 활용하기 위함이다. 연구방법은 UAV의 비용분석에 필요한 기준의 설정에 관한 내용과 운용시간을 기 반으로 보급비, 정비비, 기술지원비, 시스템 구축비 및 성과금을 합한 총사업비를 분석하였다. 총사업비 분석결과 운용시간 변화에 따라 계약기간 5년동안 최대 105억 원에서 최소 68.79억 원으로 산출되었다. In the field of national defense, UAVs performs a variety missions such as precision strikes, surveillance and reconnaissance, and transportation in dangerous environments of behalf of humans. Our military also operates a variety of UAVs and will continue to acquire additional ones. Accordingly, the military is applying PBL(Performance Based Logistics) to improve the utilization rate of UAVs, and some UAVs are under consideration for application. Although the implementation of PBL is effective in terms of equipment utilization rate, procurement period, and cost, it has become and important part and a realistic issue to estimate the reasonable cost by predicting the supply and maintenance requirements that will occur during the PBL project period in the future. The purpose of this study is to estimate the project cost of other UAVs under consideration through a case study of the division UAV PBL project cost analysis. The research method analyzed the total project cost of supplying costs, maintenance costs, technical support costs, system construction costs, and performance fees based on the content and operation time of UAV cost analysis standards. As a result of the analysis of the total project cost, it was calculated from a maximum of KRW 10.5 billion to a minimum of KRW 6.879 billion for the five-year contract period according to the change in operating hours.

유네스코 세계유산 제도의 우리나라 문화재 정책에의 수용과 발전방안에 대한 시론적 연구

강경환,김정동 국립문화재연구원 2010 헤리티지:역사와 과학 Vol.43 No.1

유네스코 세계유산(World Heritage) 보호 제도는 인류 공동의 탁월한 보편적 가치를 지닌 문화유산 및 자연유산을 보호하기 위하여 1972년 유네스코 세계유산보호협약 채택에 따라 도입된 제도이다. 40여 년이 채 안된 짧은 역사에도 불구하고 전 세계적으로 890건의 세계유산이 등재된 가장 성공적인 유네스코 문화 분야 사업 중의 하나이다. 유네스코는 세계유산의 체계적 보호관리를 위하여 등재기준의 체계화, 보존관리계획의 중요성 강조, 모니터링의 제도화, 세계유산기금의 운영 등을 통하여 세계유산을 단순히 뛰어난 문화재의 목록화 작업의 수단이 아니라 보존계획 도구(preservation planning tool)로 활용함으로써 유산 보호관리 시스템의 체계화, 선진화에 기여하였고, 이러한 세계유산 정책은 각국의 문화재 보호제도에 상당한 영향을 주었다. 우리나라도 2009년 조선 왕릉이 등재됨으로써 총 9건의 세계유산을 보유하게 되었다. 세계유산 등재가 우리 문화재의 독창성과 우수성의 홍보, 문화국가로서의 위상 증진 등에 기여하였지만 이제는 세계유산의 등재전략을 다시 점검하고 체계적인 보존관리 시스템의 확립을 위한 다양한 법적, 제도적 개선방안을 강구해야 할 시점이 되었다. 그동안 문화재보호법을 개정하여 세계유산의 등재 및 보호에 관한 근거규정을 마련하고, 일부 지방자치단체는 세계유산 관리 전담기구를 설립하는 등 노력을 하였으나, 보다 근본적이고 거시적인 세계유산 정책 개선방향을 모색해야 할 것이다. 1) 세계유산 보존관리 특별법 제정, 2) 각 지자체별로 세계유산 보호를 위한 조례 제정, 3) 문화재청과 지방자치단체의 세계유산 정책 및 관리기능 강화, 4) 세계유산 보호재원의 획기적 증대, 5) 세계유산 보존관리 계획 수립 의무화, 6) 세계유산 활용을 위한 지원 확대, 7) 세계유산 등재 내실화, 다양화, 8) 지자체 간 세계유산 관리정보 및 경험의 공유, 9) 세계유산 종합 아카이브 설치, 10) 시민협력과 주민참여 활성화, 11) 세계유산 보호를 위한 전문인력 배출 12) 지속가능한 세계유산 관광 활성화 등 세계유산 정책역량 강화를 위한 분야별 사업과 프로그램을 선정하고 이를 위한 체계적인 추진이 필요하다. 세계유산 정책이 국내적으로 어떻게 수용되고 앞으로의 변화와 발전방향에 대하여 분야별로 유형화하여 세계유산 정책이 보다 체계화, 과학화, 전문화할 수 있는 방안들을 제안하였다. 앞으로 세부 분야별로 보다 심도 있고, 전문적인 조사와 연구가 진전되어야 할 것이다. UNESCO World Heritage Programme was introduced following the adoption of Convention Concerning the Protection of the World Cultural and Natural Heritage by the General Conference of UNESCO in 1972 in order to protect cultural and natural heritage with superb value for all mankind. Despite its short history of less than 40 years, it has been evaluated as one of the most successful of the cultural area projects of UNESCO with 890 world heritage registered worldwide. For systematic protection management of World Heritage, UNESCO, through systemization of registration, emphasis on the importance of preservation management plan, institutionalization of monitoring, and operation of World Heritage Fund, has utilized World Heritage Programme not just as a means of listing excellent cultural properties, but as a preservation planning tool, and accordingly, such policies have had a significant influence on the cultural heritage protection legislations of numerous nations. Korea has ratified World Heritage Convention in 1988, and with the registration of the Royal Tombs of the Joseon Dynasty in 2009, it has 9 World Heritage Sites. Twenty years have passed since Korea joined the World Heritage Programme. While World Heritage registration contributed to publicity of the uniqueness and excellence of Korean cultural properties and improvement of Korea's national culture status, it is now time to devise various legislative/systematic improvement means to reconsider the World Heritage registration strategy and establish a systematic preservation management system. While up until now, the Cultural Properties Protection Law has been amended to arrange for basic rules regarding registration and protection of World Heritage Sites, and some local governments have founded bodies exclusive for World Heritage Site management, a more fundamental and macroscopic plan for World Heritage policy improvement must be sought. Projects and programs in each area for reinforcement of World Heritage policy capacity such as: 1) Enactment of a special law for World Heritage Site preservation management; 2)enactment of ordinances for protection of World Heritage Sites per each local government; 3) reinforcement of policies and management functionality of Cultural Heritage Administration and local governments; 4) dramatic increase in the finances of World Heritage Site protection; 5) requirement to establish plan for World Heritage Site preservation protection; 6) increased support for utilization of World Heritage Sites; 7) substantiation and diversification of World Heritage registration; 8) sharing of information and experiences of World Heritage Sites management among local governments; 9) installation of World Heritage Sites integral archive; 10) revitalization of citizen cooperation and resident participation; 11) training specialized resources for World Heritage Sites protection; 12) revitalization of sustainable World Heritage Sites tourism, must be selected and promoted systematically. Regarding how World Heritage Programme should be domestically accepted and developed, the methods for systemization, scientific approach, and specialization of World Heritage policies were suggested per type. In the future, in-depth and specialized researches and studies should follow.