Purpose – For small and medium sized firms, CEO characteristics are main factor influencing firms’ prosperity as well as performance. So it is quite natural that many people are interested in factors of CEO that matters. In this research, CEO characteristics in terms of capabilities and skill or special knowledge necessary to run the business are invested for manufacturing firms. Precedent studies reveal that CEO characteristics such as psychological factors including desire to succeed, tendency to take risks, personal factors including age, year of running business, and task related factors including managing capability, communication skills, network influence firm performance for manufacturing firms. However, these studies simply verify whether or not those factors affect firm’s managing performance. This study, however, goes further to investigate how is the affecting process from CEO’s capabilities and organization characteristics to firm’s core competence, and from core competence to advantages, and from advantages to managing performance. Research design, data, and methodology – We make a questionnaire and surveyed manufacturing firm CEO’s in Gyeonggi-do area. General characteristics analysis, factor analysis, regression analysis, and control effect analysis was conducted. SPSS 2.0 Win, version was used. Results – The CEO characteristics including basic capability, task capability, leadership, and organization characteristics affect core competence at the statistically significant level. And, core competence affect both price advantage and differentiation advantage at the significant level. Some unique finding is that while differentiation advantage affects both financial achievement and non-financial achievement, price advantage does not affect both financial and non-financial achievement. And firm characteristics mainly measured by CEO characteristics of skills has control effects on the trace from core competence to price advantage. Conclusions – For small and medium sized firms CEO characteristics is the most important factor influencing firm’s prosperity. For manufacturing firms, whether CEO has the skill or special knowledge to run the firm is critical factor. The study results show that CEO’s for manufacturing firms put importance on price and price advantage which seems to be familiar to them. However, the price advantage does not influential to financial and non-financial achievement. This result suggests that small and medium sized manufacturing firms’ CEO’s should make effort to improve other aspects of advantages to be more competitive.

집약적인 상·공업의 발달로 도시화는 기존 생활권을 벗어나 산지 인근으로까지 심화되었다. 산지 인근의 개발사업에 따른 공사 진동의 영향으로 흙입자의 결속이 느슨해지고 지지력이 약해진 산지는 최근 발생이 잦은 국지성 집중호우 등에 의해 쉽게 붕괴되어 산사태 및 토석류 등과 같은 토사재해를 야기하였다. 본 연구는 이와 같은 도심지 내 토사재해 발생 저감을 위한 토사 제어-관리기술을 선정하고, 도심지 토지이용용도별 토사 제어-관리기술별 적용성 평가 및 제어-관리기술별 토사유출 제어능력을 평가하여 도심지 토사제어기술의 적용 우선순위를 도출하였다. 본 연구를 통해 얻어진 결과물은 토사재해 뿐만 아니라 기타 호우재해도 예방할 수 있으며, 이를 통해 도심지 주거환경에 대한 재해피해를 최소화할 수 있을 것으로 판단된다.

집약적인 상·공업의 발달로 도시화는 기존 생활권을 벗어나 산지 인근으로까지 심화되었다. 산지 인근의 개발사업에 따른 공사 진동의 영향으로 흙입자의 결속이 느슨해지고 지지력이 약해진 산지는 최근 발생이 잦은 국지성 집중호우 등에 의해 쉽게 붕괴되어 산사태 및 토석류 등과 같은 토사재해를 야기하였다. 본 연구는 이와 같은 도심지 내 토사재해 발생 저감을 위한 토사 제어-관리기술을 선정하고, 도심지 토지이용용도별 토사 제어-관리기술별 적용성 평가 및 제어-관리기술별 토사유출제어 능력을 평가하여 도심지 토사제어기술의 적용 우선순위를 도출하였다. 본 연구를 통해 얻어진 결과물은 토사재해 뿐만 아니라 기타 호우재해도 예방할 수 있으며, 이를 통해 도심지 주거환경에 대한 재해피해를 최소화할 수 있을 것으로 판단된다.

In this study, AHP analysis was conducted through a survey that was organized by 9 job categories. The results show that sustainable operation risks have the highest priority level among all criteria with management interest having the highest priority level within sustainable operation risks related attributes. The most important risk attributes among stakeholder risks appeared to be asset security and cargo and conveyance security, with education and training being the most important among regulatory risks. Effective management and response to the risks from export controls on strategic trade require an understanding of supply chain security and compliance programs, effective training programs, investments for development of security systems that meet international standards. In addition, the government needs to focus on developing professionals and providing support for companies with compliance programs, working closely with businesses.

The objective of this research was to develop a relational database management system(RDBMS) to collect, manage and analyze data on agricultural non-point source(NPS) pollution. The system consists of the relational database for agricultural NPS data and data process modules. The data process modules were composed of four sub-modules for data input, management, analysis, and output. The data collected from the watershed of the upper Cheongmi stream and Geunsam-Ri were used in this study. The database was constructed using Apache Derby with meteorological, hydrological, water quality, and soil characteristics. Agricultural NPS-Data Management System(ANPS-DMS) was developed using Oracle Java. The system developed in this study can deal with a variety of agricultural NPS data and is expected to provide an appropriate data management tool for agricultural NPS studies.

The trend of heaviness causes the increase in the number of overloaded vehicles on a bridge, which is a difficulty in the decision of design live load. However, there is no established system to control the overloaded vehicles. In this paper, a management system to control the total number of heavy vehicles on a bridge using BWIM. The traffic management system uses the control methods based on approaching time intervals.

최근 세계적으로 증가하고 있는 이상홍수나 기후변화로 인하여 국내에서도 댐이나 대용량저수지에 비상대처계획을 법령으로 지정하여 필수적으로 수립하게 하고 있다. 하지만 이는 정보의 특성상 일반 시민이나 수방시설물 운영자에게 접근성이 떨어지며, 정보에 접근할 수 있다 하여도 가시성이 낮다는 단점이 있다. 본 연구는 소방방재청 자연재해저감기술개발사업단 과제의 일환으로 3차원 BIM 기술을 활용한 수방시설의 능동형 재난관리체계를 구축 사업을 통하여 이루어지고 있으며, 현재까지 의정부시의 pilot test 지역을 대상으로 수리·수문학적 홍수량 분석을 진행하였으며, 강우 사상의 발생과 저수지 붕괴 시의 피해예상범위를 예측하였다. 또한 연구과정에서 발생하는 모든 정보를 BIM 기술과 연계하기 위하여, 수방시설에 적용되는 정보항목들을 분류하고 표준화 기술 연구를 수행중이다. 또한 BIM 기반으로 지형을 모델링 하여 가시성을 높이고 있으며, 재난상황 발생 시 대피 시뮬레이션을 적용함으로서 본 과제를 수행중이다.

본 연구에서는 지표흐름 습지의 수질관리를 위하여 습지 내 오염물질을 적절히 모의할 수 있는 연속교반탱크반응기(CSTR) 모델을 구축하였다. 이 모델은 4차 Runge-Kutta법을 사용하고, 실측치와 계산치의 차이를 최소화 하는 최적화 기법으로 해를 구하며, 미국 EPA 습지 데이터베이스에 수록된 자료중 수질 및 수리자료가 충분하며, 분석이 용이한 하나의 수생대를 갖는 습지를 선택하여, 수질항목중 관심도가 높은 BOD, TSS (Total Suspend

현재 국내에서 활발히 이루어지고 있는 GPS 정밀측지측량은 GPS 관측성과가 관측값의 통계적 검증없이 이루어지고 있단 문제점이 있다. 그리고 육지와 해상의 통합지리정보시스템구축을 위한 수치지형도와 수치해도의 통합투영의 필요성이 요구되고 있다. 본 연구를 통하여 GPS 망조정에 사용되는 3점의 기준선에 대한 기하학적인 강도에 따른 정밀도 분석과 분산계수의 변화에 따른 GPS 관측 값들의 정밀도 분석방법으로 GPS 관측값의 정밀도 향상을 위한 방법을 제시하였다. 또한, GPS 관측값의 정밀도를 향상시키는 방법과 수치지도와 전자해도의 통합투영으로 GPS 기준점을 이용한 수지지형도와 수치해도의 경계선 오차량을 비교 검토하여 수치지형도와 수치해도의 통합관리의 방향을 제시하였다. 그리고 이렇게 산출된 GPS 관측결과를 이용하여 EDM 측량결과를 산출하고 수치지형도와 수치해도를 이 정계값들로 맞추었을 때 전체적인 경계점 오차량을 비교 검토하였다.

To obtain a basic information on the development of effective control strategies for weedy rice in direct seeding rice cultivation, occurrence patterns of weedy rice as influenced by different cultural practices such as cultivation method, water management, seeding time, and tillage were investigated in field or pot experiments. High occurrence of weedy rice was observed in a continuous direct seeding paddy field as compared to machine transplanted one. Based on the percent of weedy rice panicle over three years trial, high ridged dry seeding was highest with 36.9%, followed by wet seeding with 30.9%, water seeding with 14.6% and machine transplanting rice with 0.8%, indicating 97.8% reduction in weedy rice occurrence by machine transplanting rice as compared with high ridged dry seeding. Germination of weedy rice was promoted to 83-94 % when rice panicle was flooded from September 30 to October 10 for 6 days and 74-88% for 9 days on October 20. Weedy rice occurrence was also substantially reduced by delayed seeding on June 10 and intensive tillage. The results suggest that machine transplanting rice be more effective cultural practice than flooding treatment, delayed seeding and intensive tillage when weedy rice problem occurs in direct seeded paddy field.

Cultural practices favoring the crops are one of the excellent weed control measures in upland crops. The primary cultural method for weed-management may include planting of weed-competitive cultivars, proper planting time and spacing, optimum rate and placement of fertilizer, crop rotation, mulching, and timely tillage. However, cultural method must be applied as a part of the program along with all other available means for controlling weeds since this method alone is not adequate. The efficient and economical weed control can only be achieved by combinating cultural, mechanical method that supplement each other into a weed management system. Intelligent selection of weed control, however, presuppose knowledge of the life history and growth requirements of the weed and its interaction with the environment.