This study set up the revenue water ratio that could be achieved within the range of the expenses of the water distribution network maintenance project, developed an analysis methodology that could estimate the additional project quantity to achieve the target revenue water ratio of 85% and applied and verified that to S. City. This methodology allowed the distribution of the leakage quantity for each leakage component by the pipeline through the total revenue water account balance analysis and BABE approach and the redistribution into the calculated leakage quantity more accurately through a step test. In addition, the level of reduction in leakage and the quantity of the project were estimated before and after the application of four strategies for the promotion of the revenue water ratio presented by IWA, according to the leakage components by the pipeline. As a result of the application of this analysis method to S. City, it would be possible to achieve up to the revenue water ratio of 81.0%, which was 74.7% in the beginning, if the water distribution network maintenance project was promoted within the range of the project expenses, and to achieve the revenue water ratio of 85.0%, the goal of the project, it would be necessary to replace the pipeline of 22.2% of the entire pipelines in the target area. As a result of the re-estimation of the revenue water ratio achievable, applying the actual water distribution network maintenance quantity in the scope of the business with the results of this analysis, the revenue water ratio was 81.7% while the actually measured revenue water ratio was 82.3%. Thus, the reliability of this analysis method could be secured to some extent.

PURPOSES : This study aims to investigate the effect of the propagation time of variable message sign (VMS) information and drivers’ detour rate on the VMS performance under non-recurrent traffic states. METHODS: A microscopic simulation model (i.e., VISSIM and VISSIM COM User Interface) was developed at a location where VMS messages were most frequently displaced in 2018 from the Busan Regional Construction and Management Administration. The non-recurrent traffic states realized in this study were one- and two-lane close cases with scenarios involving multiple propagation times from 0 min to 20 min in 2 min increments and detour rates from 0% to 50%, in 10% increments. The measures of effectiveness are the average delay per vehicle, total travel time, and reduction rate of the total travel time based on the average value of 30 multiple simulation runs for individual scenarios. RESULTS:For the one- and two-lane close cases, the reduction rate of the total travel time increased as the propagation time shortened and the detour rate became bigger. The optimal (i.e., 0 min propagation time and 50% detour rate) and worst (i.e., 20 min propagation time and 10% detour rate) scenarios produced 41.1% (8.9 h) and 6.4% (1.4 h) and 26.4% (86.5 h) and 1.4% (4.7 h) of the total travel time for the one- and twolane close cases, respectively. CONCLUSIONS : The study results implied that the late propagation time and the low detour rate might not significantly influence the VMS system. Therefore, it is important to improve the information process time for the shorter propagation time and the reliability of the VMS information for a higher detour rate, which will result in a better VMS system performance.

Development, availability and users’ participation in the information service of agricultural food sector is slower than that of other sectors in Korea. This phenomenon comes from the lack of development strategies and comparative analyses with other sectors, as well as the agricultural food industry’s own characteristics which is developed based on the offline market. In this research, we will discuss about how to improve the public information service of agricultural food sector based on the example of establishing service improvement strategy by the most representative Okdab. In this research, we have drawn the following implications for development strategy of Okdab service based on three core keywords derived from benchmarking KOSIS. Three core subjects for upgrading public information service are ‘analysis information with expertise and differentiation,’ ‘user cooperation-oriented platform,’ and ‘intuitive nd effective UX,’ and to strength B.I. as an integrated information service of agricultural food sector, we need to identify the users’ satisfaction and needs for the existing service, establish an optimized operating strategy on a short-term, mid-term and long term bases, and implement them in a positive way. Based on this positive action, it can become a trustworthy information service for the users, and we can expect the improvement of the users’ recognition for its consistent usability and efficiency.

해상교통안전진단제도가 도입(2009.11)된 후 운영 중 나타난 제도상·운영 측면에서의 개선사항을 반영하고, 제도의 효율성 제고 및 종합 관리를 위해 해상교통안전진단시행지침 전부개정(2012.3)을 통해 선박안전기술공단내 해사안전연구센터가 전문기관으로 지정되었다. 하지만, 개정된 관련 해사안전법령에는 안전진단서 사전검토, 진단대상사업에 대한 검토 의견 제시 등 유사 국내 평가제도에서의 전문기관과 비교하면 역할과 업무가 명확하지 제시되지 않았다. 이에 본 연구에서는 먼저 SWOT분석을 통해 전문기관 발전을 위한 추진전략을 수립하고, 처분기관, 사업자, 안전진단대행업자 등 관련 전문가 의견수렴 및 국내 유사 평가제도의 전문기관의 역할 및 운영현황을 비교분석하였다. 이를 통해 진단제도가 효율적으로 운영되고, 진단사업에 대한 환경변화에 능동적으로 대응 할 수 있도록 스크린·스코핑, 컨설턴트 시스템 도입을 위한 전문기관의 조직 구성과 운영체제 개선과 진단관련 주체들의 책임과 역할을 명확화하기 위해 해사안전법 개정 등 전문기관의 발전과 해양개발사업에 대한 통합관리를 위한 제도상·운영상의 개선사항 도출하여 제시하였다.

This study investigates the current status of the green growth policies of Korean public corporations and proposes some potential improvement ideas. A set of twenty global green trends are first elicited by using classified macro trends of environmental changes. The green trends are categorized into four key issues based on which domestic and international research efforts are compared. The management performance reports of Korean public corporations are then throughly analyzed to evaluate the validity of their strategic green tasks in relevant to the global green trends. Finally, we suggest some potential government policies for enhancing the existing green growth businesses of public corporations.

In this study, we focus to suggest the direction of future development upon analyzing the actual conditions of green growth businesses of public corporations and the strategic problems. First, by using classified macro trends of global environmental change, we will examine the related 20 green trends. Green trends are synthesized with four key issues and we will look closely these issues of home and abroad. we analyze the strategic tasks outlined in management performance reports 2011 of public corporations and will look at its relation to global green trends. Based on the results of this analysis, we will suggest the direction of future development of green growth strategy which is required for public corporations.

The research proposes seven elimination rules of redundant gates and blocks in Fault Tree Analysis (FTA) and Reliability Block Diagram (RBD). The computational complexity of cut sets and path sets is NP-hard. In order to reduce the complexity of Minimal Cut Set (MCS) and Minimal Path Set (MPS), the paper classifies generation algorithms. Moreover, the study develops six implementation steps which reflect structural importance (SI) and reliability importance (RI) from Reliability Centered Maintenance (RCM) that a priority of using the functional logic among components is to reduce (improve) the system unavailability (or availability). The proposed steps include efficient generation of state structure function by Rare Event Enumeration (REA). Effective use of importance measures, such as SI and ill measures, is presented based on the number and the size of MCS and MPS which is generated from the reference[5] of this paper. In addition, numerical examples are presented for practitioners to obtain the comprehensive understanding of six steps that is proposed in this research.

  This study measured technology transfer efficiency for public institutes. The study made use of DEA being one of the non-parametric linear programming to evaluate technology transfer efficiency for public institutes and to measure technology efficiency,

According to the World Competitiveness Yearbook(WCY), competitiveness of nations looks how nations create and maintain an environment which sustains the competitiveness of its enterprises. To develop economics and join the ranks of the advanced countries in the global market, Korea needs to consider the national competitiveness. Consequently, in this study, first, we try to know a concept of national competitiveness. Second, we also investigate models of national competitiveness. Finally, we suggest an improvement strategy, which is based on models, as compared with many countries of Europe.

Recently, numerous government institutions and information service organizations have shown interests in employing ISO 9001 Quality Management System to increase their organizational performances. However, due to the gap between the system requirements and the process oriented goals in reality, they have not been able to merit from the ISO 9001 system. The primary goal of this paper is to propose a process oriented approach for implementing ISO 9001 system in information service organizations. This approach is different from the existing approaches in that it utilizes process mapping and 3-color improvement strategies. The proposed approach is illustrated using the K information service organization case study.

유전자 알고리즘은 적자 생존과 자연친화의 유전이론을 기초로 하여 이루어진 탐색기법이다. 유전자 알고리즘은 미분 정보 등과 같은 부가적인 정보없이 수렴함으로 전역적 최적값을 탐색하는 강인한 탐색기법으로 알려져 있다. 유전자 알고리즘은 연속형의 설계변수를 가지는 문제에서 세대가 계속 진행되어도 목적함수의 개선이 없이 조기에 수렴하는 경우가 있다. 또한 전역적 최적값 근처에서 수렴하지 못하고 목적함수값이 진동하여 수렴속도가 떨어지는 단점이 있다. 본 연구에서는 위와 같은 유전자 알고리즘의 단점을 보완하고자 재시동 조건과 엘리트 보존방법을 제안하였다. 수정된 유전자 알고리즘의 유용성을 검증하기 위해 3부재 트러스와 평면응력 외팔보에 적용하여 수렴 속도의 향상을 확인하였다.

대형복합재난은 자연재난과 사회재난이 연쇄적 또는 동시다발적으로 발생함에 따라 예측 가능한 범위 밖의 거대한 규모로 전개되 는 재난을 의미한다. 대형복합재난은 재난의 동시성과 연쇄성으로 전혀 새로운 형태로 변화되어 기존의 재난관리방식과 다른 새로운 관리방 식이 필요하게 된다. 이에 본 연구는 대형복합재난을 대상으로 선진외국의 복합재난대응체계를 검토하여 국내 복합재난 대응체계에 필요한 정책적 개선방향을 제시하였다.

교량의 안전은 점검에 의해 보장된다. 그리고 교량의 유지관리는 점검결과를 토대로 시작된다. 따라서 점검결과는 ‘교량의 안전’과 ‘효율적인 유지관리’를 위한 가장 중요한 정보이다. 따라서 본 논문에서는 교량의 점검신뢰도를 평가하고 이를 제고 할 수 있는 방안을 제시하 고자 한다. 이를 위해 본 논문에서는 교량의 점검신뢰도를 평가 할 수 있는 세 가지 점검신뢰도를 제시하였다: 명목점검신뢰도, 실질점검신뢰 도, DS명목점검신뢰도. 교량의 점검신뢰도 분석 방법은 정밀안전진단결과를 참값으로 간주하고 당해년도 정밀(정기)점검과 차년도 정밀안전 진단결과를 비교하였다. 인적오류를 고려한 DS명목신뢰도를 기준으로 현재 고속도로교량의 점검신뢰도 85%로 양호한 편으로 평가 된다. 이 는 현재 고속도로 교량의 평균공용연수가 13년으로 대부분의 교량이 ‘A’와 ‘B’등급에 집중적으로 분포되어 상태변화가 크지 않기 때문인 것 으로 판단된다. 점검신뢰도를 제고하기 위해서는 점검자의 역량을 강화하고 전문점검인력 육성이 필요하며 점검결과에 대해 QC(Quality Control, 품질관리)를 실시하여 점검결과의 신뢰도 향상이 필요하다.

In U.S.A. maize breeding, exotic germplasm is considered as high-risk and usually introduced by backcrossing specific traits into elite lines. The U.S.A. maize germplasm base is narrow. Only a few open-pollinated varieties are well represented in current programs. Currently, the barrier in using of exotic germplasm in the U.S.A is less formidable than in the 1980s. The major reason is that U.S.A materials are now used in tropical breeding to accelerate earlier maturity and lodging resistance. These exotic materials, developed with U.S.A germplasm, are being introduced back into the U.S.A.Since1994, the ARS-led Germplasm Enhancement of Maize (GEM) project has sought to help broaden the genetic base of America’s corn crop by promising exotic germplasm and crossing it with domestic lines. New hybrids derived from such crosses have provided corn researchers and the producers. These may include improved or alternative native source of resistance to insect pests such as corn rootworms and diseases like northern leaf blight. GEM’s aim is to provide source of useful genetic maize diversity to help the producers to reduce risks from new or evolving insect and disease threats or changes in the environment or respond to new marketing opportunities and demand. During the 2009 growing season, the Ames (Iowa) and Raleigh (North Carolina) locations managed or coordinated evaluations on 17,200 nursery plots as well as 14,000 yield trial plots in Ames and 12,000 in Raleigh. A new “allelicdiversity” study is devoted to exploring and capturing the genetic variation represented by over 300 exotic corn races. Since 2001, GEM has released 221 new corn lines to cooperators for further development into elite commercial new hybrids. GEM has already identified about 50%-tropical, 50%-temperate families tracing primarily to tropical hybrids that are competitive with commercial checks. In North Carolina State University program, they have examined the potential of tropical inbredand hybrids for U.S.A. breeding by crossing temperate-adapted, 100%-tropical lines to U.S.A hybrids. There should be favorably unique alleles or genomic regions in temperate germplasm that can be helpful in tropical maize improvement as well as utilization of tropical lines in temperate areas.

Infrastructure safety and maintenance management(ISMM) is one of the most important parts for improving level of people's welfare. The government needs to set up their own improvement strategy for ISMM system. This study was initiated to suggest the strategy to improve ISMM system with long term perspective. In order to investigate the current status and problems of ISMM system, this study reviewed various literature related to the issues of the foreign ISMM systems and conducted the interview with ISMM experts. The strategy would be expected greatly to improve the safety and maintenance management system for domestic infrastructure.

As almost community facilities in korean rural village have being showed signs of decrepitude, and have a lot of problems on scale and function, it hasn't made full use of almost community facilities. To resolve these problems, it is time to make different plan considered of elements, scale and function in community facilities. In this study, after being researched the present condition and interviewed local residents on target 25 administrative districts, it was sought diverse problems about community facilities and researched satisfaction measurement, activity of local residents. With Being based on this, we also drove from essential element about community facilities in korean rural village and sorted problems of community facilities as general disposition-structure-outdoor facilities-behavioral use. Therefore, it was applied to study area and ascertained the existence of problem. Thus, we found out the improving way for appropriate community facilities in korean rural village. It will be useful to make different plan for community facilities in korean rural village.

본 논문의 목적은 국적외항선사들이 불확실한 국내외 해운환경변화에 적절히 대처할 수 있는 성과개선전략을 구축하는 데 있다. 이러한 목적을 위해 첫째로, 외항선사이 직면하고 있는 환경에 대처하여 성과를 개선할 수 있는 변수를 BSC의 네 관점에서 추출하여 이들 간의 관련성여부를 구조방정식 모형에 의해 분석하였다. 분석결과에 의하면, 학습 성장관점은 내부프로세스에 영향을 미치고 이는 다시 운항서비스를 제공하는 고객관점에 영향을 미치어 신규항로개발에 의한 물동량 창출, 재무적 안성성유지 및 항로수익성 제고 등의 재무적 관점요인에 영향을 미치는 것으로 인식되고 있다. 이러한 분석결과는 학습 성장관점, 내부프로세스관점 및 고객 관점과 같은 비계량적이고 비재무적변수가 외항선사의 성과개선에 기여하는 중요변수임을 시사하는 것으로 이에 대한 체계적인 관리가 필요하다.