• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제11권5호
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• pp.458-463
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• 2005

은행이나 투자신탁회사와 같은 금융기관에서는 수탁자산이나 고유자산의 운용과 관리를 위한 유가증권시스템이 필요하며 이는 업무 영역에 따라 프론트오피스시스템, 미들오피스시스템, 백오피스시스템으로 나누어진다. 이러한 업무 시스템들은 수많은 금융상품 및 데이터의 처리, 금융상품들외 리스크 계산, 기준가 산정, 회계처리, 준법감시 등 전문적인 업무지식과 많은 양의 계산이 필요한 복잡하고 방대한 시스템이다. 또한, 금융기관의 업무시스템이라는 성격 상 고도의 안정성과 효율성을 요구하며 다변적인 금융환경을 고려한 확장성과 각 업무시스템들과의 연계와 통합은 물론 외부 기관과의 연계도 매우 중요하다. 본 논문에서는 이러한 통합 유가증권시스템의 구성과 개발사례를 소개하고 효율적 구축에 관하여 논의한다.

• 한국환경보건학회지
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• 제45권5호
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• pp.487-496
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• 2019

Objective: The purpose of this study was to create soil contamination maps using QGIS (Quantum Geographic Information System) and suggest selection methods for soil pollution sources for preferential investigation in a soil contamination survey. Method: Data from soil contamination surveys over five years in Gyeonggi-do Province, South Korea (2013-2017) were used for making soil contamination maps and analyzing the density of survey points. By analyzing points exceeding the concern level of soil contamination, soil pollutant sources for priority management were identified and selection methods for preferred survey points were suggested through a study of the model area. Results: A soil contamination survey was conducted at 1,478 points over five years, with the largest number of surveys conducted in industrial complex and factory areas. Soil contamination maps for copper, zinc, nickel, lead, arsenic, fluoride, and total petroleum hydrocarbons were made, and most of the survey points were found to be below concern level 1 for soil contamination. The density of the survey points is similar to that of densely populated areas and factory areas. The analysis results of points exceeding the criteria showed that soil pollutant sources for priority management were areas where ore and scrap metals were used and stored, traffic-related facilities areas, industrial complex and factory areas, and areas associated with waste and recycling. According to the study of the model area, the preferred survey points were traffic-related facilities with 15 years or more since their construction and factories with a score of 10 or more for soil contamination risk. Conclusion: Soil contamination surveys should use GIS for even regional distribution of survey points and for the effective selection of preferred survey points. This study may be used as guidelines to select points for a soil contamination survey.

• 융합정보논문지
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• 제7권2호
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• pp.119-124
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• 2017

정보는 기업의 규모와 무관하게 소중한 자산이며 정보보안은 기업의 생존과 번영을 위해 필수적인 요소이다. 하지만 대기업의 경우 정보보안경영시스템(ISMS)의 신속한 도입을 통해 안전을 확보해 나가지만, 중소기업의 경우는 예산 제약, 보안 지침의 미흡, 보안에 대한 인식 부족 등, 복합적인 요인들로 인해 보안시스템이 구축되지 않거나 구축이 지체되고 있다. 본 논문에서는 중소기업의 정보보안 관리 실태를 설문조사를 통하여 문제점을 분석하고, 중소 기업을 위한 무료 또는 저렴한 방법으로 종합적인 보안계획 수립 방안을 제시하고자 한다. 본 논문이 제시하는 방법을 적용해 중소기업들은 최저 비용의 기본적인 정보보안을 구현할 수 있을 것이며, 정보보안 계획을 수립하고자 하는 중소기업들에 도움이 될 것이라고 믿는다.

• 한국위험물학회지
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• 제6권2호
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• pp.77-86
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• 2018

Interest in renewable energy is increasing for eco-friendly use of energy, and fuel cells are being used in various ways such as houses and buildings as power generation methods that have low emissions such as $NO_X$ and $CO_2$. As the supply of fuel cells expands, more and more boilers are installed in the existing buildings, but safety management is not being performed properly. Therefore, in this study, a prior study was conducted on the status of fuel cell-boiler complex installation and related criteria, and the risk factors were analyzed according to the installation environment and structure. Based on these standards, the safety performance of the fuel cell-boiler combined installation is assessed by conducting a demonstration using the starting product of the simulated operation to derive the installation criteria (proposal) for the fuel cell-boiler combined installation. The installation criteria (proposal) include the construction and connection method of the piping according to the fuel cell-boiler complex installation.

• 디지털융복합연구
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• 제19권12호
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• pp.457-462
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• 2021

우리나라 지형의 특성상 산지가 많아 고속도로 직선화 건설 시에는 터널 설치가 필수적인 요소이다. "2019년도 도로 교량 및 터널 현황조서" 통계에 따르면 터널은 2,682개소이고 2,077km로 전체 도로연장의 1.9%를 차지하고 있으며 10년 전에 비해 1,300개소로 94% 증가하고 있다. 국내외 연구에 따르면 고속도로 설치된 1Km이상 되는 장대터널들은 좁고 어두운 조명과 단조로운 벽면 디자인으로 인해 운전자로 하여금 집중력 저하 및 지루함을 느끼게 하여 피로와 졸음이 쉽게 발생한다. 이에 한국도로공사에서는 2020년까지 3Km 이상 터널 10곳을 대상으로 주의력 높이는 디자인 조명을 설치하였다. 본 연구는 터널 내부에서 발생할 수 있는 사고의 위험성을 개선하고자 한국고속도로에서 설치된 터널 내 LED 경관 조명 디자인을 유형별로 특징을 비교 분석하였다. 연구 결과를 바탕으로 향후 터널 내 LED 경관 조명 설치 시 운전자로 하여금 주행 안정성 확보와 피로와 졸음사고를 낮출 수 있는 효과적인 설치를 위한 기초자료 제공의 목적으로 한다.

• 대한건축학회연합논문집
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• 제20권6호
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• pp.121-129
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• 2018

The present study analyzed what policies are being executed for deteriorated apartments in Japan and what characteristics each policy had in order to examine policy direction and implications for the improvement of vitalization of remodeling business of deteriorated apartments in Korea. The study results are as follows. Japan recognized social problems of deteriorated apartments and pushed forward a national level remodeling actively by preparing financial support of central government and supporting plan by city and province. First, Japan maintained initial performance of buildings through phased maintenance for deterioration of buildings and aimed to reduce environmental load and maintain asset values of buildings through enlarging durability of buildings by responding to lifestyle according to social changes. To this end, they promoted the long life of buildings through the establishment of systematic long term repair plan from the stage of moving in the buildings. Second, in order to reduce the risk of remodeling projects, they prepared an environment where business could be carried out with an easy mind in various aspects by introducing remodeling business registration system and large scale repair construction defect insurance system. Third, they reduced economic burden of main agents of remodeling business with tax preferential treatment and financial support policies. Fourth, they have established remodeling support system based on overall social issues and connected it with social effect that could be obtained through this. The remodeling policies of Japan were carried out in the direction of solving social problems and considering economic aspect rather than just improving individuals' residence environment.

• Ocean Systems Engineering
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• 제9권3호
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• pp.287-328
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• 2019

Comprehensive understanding of the flood risk assessments via frequency analysis often demands multivariate designs under the different notations of return periods. Flood is a tri-variate random consequence, which often pointing the unreliability of univariate return period and demands for the joint dependency construction by accounting its multiple intercorrelated flood vectors i.e., flood peak, volume & durations. Selecting the most parsimonious probability functions for demonstrating univariate flood marginals distributions is often a mandatory pre-processing desire before the establishment of joint dependency. Especially under copulas methodology, which often allows the practitioner to model univariate marginals separately from their joint constructions. Parametric density approximations often hypothesized that the random samples must follow some specific or predefine probability density functions, which usually defines different estimates especially in the tail of distributions. Concentrations of the upper tail often seem interesting during flood modelling also, no evidence exhibited in favours of any fixed distributions, which often characterized through the trial and error procedure based on goodness-of-fit measures. On another side, model performance evaluations and selections of best-fitted distributions often demand precise investigations via comparing the relative sample reproducing capabilities otherwise, inconsistencies might reveal uncertainty. Also, the strength & weakness of different fitness statistics usually vary and having different extent during demonstrating gaps and dispensary among fitted distributions. In this literature, selections efforts of marginal distributions of flood variables are incorporated by employing an interactive set of parametric functions for event-based (or Block annual maxima) samples over the 50-years continuously-distributed streamflow characteristics for the Kelantan River basin at Gulliemard Bridge, Malaysia. Model fitness criteria are examined based on the degree of agreements between cumulative empirical and theoretical probabilities. Both the analytical as well as graphically visual inspections are undertaken to strengthen much decisive evidence in favour of best-fitted probability density.

• 디지털융복합연구
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• 제16권12호
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• pp.123-135
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• 2018

본 연구는 플랜트 엔지니어링 산업에 속하는 대기업들의 공급망관리 도입과 운영에 대한 문제점을 살펴보고 이를 개선하기 위한 기본틀을 제시하는데 목적이 있다. 관련 자료의 축적을 위한 사례연구결과, EPC 형태의 사업운영과 더불어 프로젝트 관련 결정의 조정능력 및 정보공유 부족, 적절한 위험 및 변화시스템의 부재 등은 납기지연 및 예산 초과로 이어진다는 것도 알 수 있게 되었다. 공급망의 정보화는 경쟁력 제고와 직결되므로, EPC 프로젝트 공급망의 협업관련 정보화와 정보공유 수준을 살펴보기 위해 공급망을 구성하는 협력업체에게 설문조사를 실시하였다. 통계적 분석결과, 정보공유, 디자인과 설계활동의 조기참여 및 SCM에 대한 인식은 공급망 상의 협업에 긍정적 영향을 미치나 협력업체의 정보화나 평가는 유의미한 영향을 미치지 않는 것으로 나타났다. 이외에도 설계 및 엔지니어링, 조달, 시공의 여러 부문을 통합하는데 기여할 수 있는 프로젝트 공급망관리 모형을 제안했으며 이를 통해 몇 가지 실무적 시사점도 기술하였다.

• 한국해양공학회지
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• 제33권5호
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• pp.435-446
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• 2019

Because offshore structures are affected by various environmental loads, the risk of damage is high. As a result of ever-changing ocean environmental loads, damage to offshore structures is expected to differ from year to year. However, in previous studies, it was assumed that a relatively short period of load acts repeatedly during the design life of a structure. In this study, the residual life of an offshore wind turbine support structure was evaluated in consideration of the timing uncertainty of the ocean environmental load. Sampling points for the wind velocity, wave height, and wave period were generated using a central composites design, and a transfer function was constructed from the numerical analysis results. A simulation was performed using the joint probability model of ocean environmental loads. The stress time history was calculated by entering the load samples generated by the simulation into the transfer function. The damage to the structure was calculated using the rain-flow counting method, Goodman equation, Miner's rule, and S-N curve. The results confirmed that the wind speed generated at a specific time could not represent the wind speed that could occur during the design life of the structure.

• 한국산업융합학회 논문집
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• 제22권2호
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• pp.163-171
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• 2019

Recently, rural housing in urban areas has been increasing due to the improvement of income level. With the increase of the construction of the power house, the installation of the heating system using the harmonious fuel for the purpose of heating and the beauty of the room is increasing rapidly. In addition to the increasing use of firewood heating equipment, the incidence of fire is also increasing. Analysis of the National Fire Data System of the Fire Department The result of the analysis of the National Fire Data System Many parts of the fire are incinerated by the accumulation of tar due to the incompleteness of periodic cleaning inside the cylinder. The distance between the fire extinguisher and the combustible materials such as ceiling, Resulting in fire. In addition, it was found that much of the fire of the firewood heating system in the time zone occurs during the sleeping and resting time and there is not enough time for the residents to cope. This, in turn, causes serious harm to the lives and property of the users of the pyrotechnic heating system. Therefore, in this study, domestic and foreign standards and laws related to fuel oil heating facilities were analyzed and 12 cases of fire accidents were analyzed. Through the revision of the fire prevention and firefighting facilities installation and maintenance law, the installation standards of the alarm and fire extinguishing facilities were presented.