• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2004년도 SMICS 2004 International Symposium on Maritime and Communication Sciences
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• pp.88-92
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• 2004

Most studies in the past in testing and benchmarking on Intrusion Detection System (IDS) were conducted as comparisons, rather than evaluation, on different IDSs. This paper presents the evaluation of the performance of one of the open source IDS, snort, in an inexpensive high availability system configuration. Redundancy and fault tolerance technology are used in deploying such IDS, because of the possible attacks that can make snort exhaust resources, degrade in performance and even crash. Several test data are used in such environment and yielded different results. CPU speed, Disk usage, memory utilization and other resources of the IDS host are also monitored. Test results with the proposed system configuration environment show much better system availability and reliability, especially on security systems.

• 동굴
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• 제80호
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• pp.11-19
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• 2007

Most studies in the past in testing and benchmarking on Intrusion Detection System (IDS) were conducted as comparisons, rather than evaluation, on different IDSs. This paper presents the evaluation of the performance of one of the open source IDS, snort, in an inexpensive high availability system configuration. Redundancy and fault tolerance technology are used in deploying such IDS, because of the possible attacks that can make snort exhaust resources, degrade in performance and even crash. Several test data are used in such environment and yielded different results. CPU speed, Disk usage, memory utilization and other resources of the IDS host are also monitored. Test results with the proposed system configuration environment shows much better system availability and reliability, especially on security systems.

• 한국의료질향상학회지
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• 제6권1_2호
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• pp.136-149
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• 1999

Background : Although a number of studies are related to QA improvement, there are few studies applied various method of QA tools. This study reviewed the availability of general quality assurance(QA) tools according to ten steps in performing quality improvement activities at emergency room of a tertiary teaching hospital which has more than 1,000 beds. Methods : All patients in emergency room from 15th Oct. 1997 to 5th Sep. 1998 were surveyed. The survey data based on the patient's records of emergency room were evaluated according to length of stay, and we tried to identify problems with management of emergency room. To solve the problems, our team applied general QA tools(brainstorming, flow chart, nominal group technique, benchmarking, cause-and-effect diagram, run chart, control chart) to quality improvement activities and discussed the availability of the tools. Results : After the activities such as changes of staffing, the establishment of local area network and chest pain clinic, application of triage and so on, the percentage of patient who had stayed more than six hours was reduced from 56.0% to 46.8%. The mean number of patients per day in emergency room was increased from 49 to 62. But the reporting time for laboratory test was not changed after these activities. Conclusion : Each QA tool has unique benefit and limitation, but we can implement and evaluate the quality improvement activities more scientifically and systematically by applying these tools to practice according to QA ten steps.

• 한국압력기기공학회 논문집
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• 제9권1호
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• pp.1-7
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• 2013

In around 2000, the U.S. NPPs have developed the various advanced engineering processes based on the INPO AP-913(Equipment Reliability Process Description) and showed the high performance in availability. With these benchmarking cases, the Korean NPPs have introduced the advanced engineering technology since 2005. The first step of the advanced engineering is to analyze and determine component importance for all components of a plant. This process is called Functional Importance Determination(FID). These results are basically utilized to determine the priority with limited resources in various areas. However, because the consistency of FID results is insufficient despite applying the same criteria in the existing operating NPPs, the degree of application is low. Therefore, this paper presents the improved methodology for FID interfacing system functions of Maintenance Rule Program and results of Single Point Vulnerability(SPV). This improved methodology is expected to contribute to enhance the reliability of FID data.

• Agribusiness and Information Management
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• 제10권1호
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• pp.26-34
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• 2018

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.

• International Journal of Computer Science & Network Security
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• 제24권1호
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• pp.215-225
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• 2024

Predictive maintenance has been considered fundamental in the industrial applications in the last few years. It contributes to improve reliability, availability, and maintainability of the systems and to avoid breakdowns. These breakdowns could potentially lead to system shutdowns and to decrease the production efficiency of the manufacturing plants. The present article aims to study how predictive maintenance could be planed into the production scheduling, through a systematic review of literature. . The review includes the research articles published in international journals indexed in the Scopus database. 165 research articles were included in the search using #predictive maintenance# AND #production scheduling#. Press articles, conference and non-English papers are not considered in this study. After careful evaluation of each study for its purpose and scope, 50 research articles are selected for this review by following the 2020 Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA) statement. A benchmarking of predictive maintenance methods was used to understand the parameters that contributed to improve the production scheduling. The results of the comparative analysis highlight that artificial intelligence is a promising tool to anticipate breakdowns. An additional impression of this study is that each equipment has its own parameters that have to be collected, monitored and analyzed.

• 자원리싸이클링
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• 제24권5호
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• pp.22-32
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• 2015

본 연구는 폐기저귀 재활용 공정 이후 회수되는 재생 자원의 가치를 높여 경제성을 확보하기 위한 관점에서 업사이클링 개념을 논의하고, 벤치마킹을 통해 펄프와 혼합 플라스틱의 업사이클링 방안을 수립하고자 하였다. 업사이클링은 원래의 물질이 다시 사용될 때 품질이 향상되고 폐기물을 질적 환경적으로 더 높은 가치를 가진 새로운 물질이나 제품으로 전환하는 과정으로 요약되며, 다양한 사례를 통해 용도를 다 한 제품이더라도 새로운 가치를 갖게 된다는 것을 알게 되었다. 그러나 기존의 업사이클링 사례들은 정성적인 디자인 요소를 통한 가치 창출이므로 정량적인 전략의 도출이 어렵고 업사이클링 완제품 시장 경쟁력에 대한 판단이 불확실하다. 따라서 본 연구에서는 활용성 차원에서 B2B 제품까지 범위를 확장하고, 재생펄프와 혼합 플라스틱 두 소재를 같이 활용할 수 있도록 업사이클링 방향성을 설정하여 이를 만족할 수 있는 제품군에 대해 분석하였다. 그 결과, 셀룰로오스 단열재로의 적용을 제안하며, 향후 국내/외 단열재 시장에서 고성능 셀룰로오스 비중이 약 3배 이상 급성장 할 것으로 예측되기 때문에 본 시장을 목표로 업사이클링 전략을 세워야 할 것으로 보인다.

• 한국항만경제학회지
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• 제17권1호
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• pp.27-51
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• 2001

The purpose of this paper is to investigate the productive efficiency of world container ports by using the DEA (Data Envelopment Analysis) method and raw data from previous research in measuring the international competitiveness of world container ports. Ports have to cope with rapid changes in shipping environments. In order for a port to compete in the global market, it must provide port services promptly and accurately. Basically, there are two approaches to measuring the international competitiveness of a container port. First, there is the traditional productivity analysis method, which analyzes productivity based on the container port's facilities (efficiency, selectivity, land availability), and by its general capacity (handling ability, storage capacity, terminal productivity). Second there is multi-attribute utility analysis, which considers several elements including the reasons for selecting particular container ports and factors determining international competitiveness. This paper follows the first method (traditional productivity analysis) and extends the limitation of previous studies by using the DEA method newly, and suggesting: the relative productive efficiency of container ports. The main results of this paper are as follows: First, the results of the DEA analysis in terms of world container ports matches that of a previous study (Jun et al., 1993) at a level of 35%. The low ratio is due to the constrained set of input-output elements, the result of only twenty container ports being analyzed in this paper. Second, the result of the DEA analysis in terms of North-East Asia's container ports matches with that of a previous study (Ha, 1996) at a level of 100 percent. Therefore we can conclude that the DEA analysis is the best measurement method for international competitiveness. Policy implications for this study are as follows: First, when port authorities want to measure the international competition power of container ports and enhance their productive efficiency, they should consider the traditional method and newly introduce the DEA method. Second, according to the analysis results of the DEA method, pen authorities should recommend benchmarking ports as reference ports in order to enhance the productive efficiency of container ports that show an efficiency score of below 1.

• 경영정보학연구
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• 제14권3호
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• pp.53-74
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• 2012

IT 아웃소싱은 서로 다른 두 기업의 자원들이 계약이라는 관계를 통해 결합되는 특수한 상황이다. 자원기반 관점(Resource-Based View)에서는 IT 아웃소싱 제공 기업의 자원, 고객 기업의 IT 자원, 그리고 제공 기업과 고객 기업간의 관계 자원이 동시에 IT 아웃소싱 성공에 영향을 미칠 수 있다고 한다. 그러나 선행 연구들 중 이 세 IT 자원들의 영향력을 동시에 비교 분석한 연구가 드물다. 또한 IT 자원은 유형적 IT 자산과 무형적 IT 역량으로 구분되는데, IT 역량만이 IT 성과에 영향을 미칠 것이라는 Bharadwaj(2000) 등의 주장을 IT 아웃소싱 배경에서 실증 분석한 연구도 거의 없다. 따라서 본 연구는 1) 세 IT 자원이 IT 아웃소싱 성공에 미치는 영향을 동시에 비교검증하고, 2) 특히 고객 기업의 IT 자원을 IT 자산과 IT 역량으로 구분하여 IT 아웃소싱 성공에 대한 영향력을 검증하였다. 이 연구 목적을 달성하기 위해 최근 3년간 국내 순위 100위권 내에 속한 기업 138개 중 45개 기업의 62개 IT 아웃소싱 프로젝트를 대상으로 자료를 수집하였고, 수집한 자료를 PLS를 사용한 경로분석으로 분석하였다. 경로분석결과, IT 아웃소싱 제공 기업의 자원은 높은 신뢰관계가 있을 때만 IT 아웃소싱 성공에 영향을 미치고, 고객 기업이 높은 IT 역량을 확보할 때만 IT 아웃소싱이 성공할 수 있음을 발견하였다. 이를 통해 본 연구는 IT 아웃소싱 상황에서도 자원기반 관점을 다시 한번 확증하였다는 점에 그 의의를 둘 수 있다. 즉 Bharadwaj(2000)의 연구결과와 마찬가지로 기업의 IT 자산이 아닌 IT 역량이 IT 성과에 영향을 미친다는 것을 IT 아웃소싱 상황에서 실증적으로 보여주었고, 관계 자원의 중요성도 본 연구의 결과를 통해 제시하였다.