• Journal of Intelligence and Information Systems
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• v.20 no.3
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• pp.109-131
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• 2014

As the demand of nuclear power plant equipment is continuously growing worldwide, the importance of handling nuclear strategic materials is also increasing. While the number of cases submitted for the exports of nuclear-power commodity and technology is dramatically increasing, preadjudication (or prescreening to be simple) of strategic materials has been done so far by experts of a long-time experience and extensive field knowledge. However, there is severe shortage of experts in this domain, not to mention that it takes a long time to develop an expert. Because human experts must manually evaluate all the documents submitted for export permission, the current practice of nuclear material export is neither time-efficient nor cost-effective. Toward alleviating the problem of relying on costly human experts only, our research proposes a new system designed to help field experts make their decisions more effectively and efficiently. The proposed system is built upon case-based reasoning, which in essence extracts key features from the existing cases, compares the features with the features of a new case, and derives a solution for the new case by referencing similar cases and their solutions. Our research proposes a framework of case-based reasoning system, designs a case-based reasoning system for the control of nuclear material exports, and evaluates the performance of alternative keyword extraction methods (full automatic, full manual, and semi-automatic). A keyword extraction method is an essential component of the case-based reasoning system as it is used to extract key features of the cases. The full automatic method was conducted using TF-IDF, which is a widely used de facto standard method for representative keyword extraction in text mining. TF (Term Frequency) is based on the frequency count of the term within a document, showing how important the term is within a document while IDF (Inverted Document Frequency) is based on the infrequency of the term within a document set, showing how uniquely the term represents the document. The results show that the semi-automatic approach, which is based on the collaboration of machine and human, is the most effective solution regardless of whether the human is a field expert or a student who majors in nuclear engineering. Moreover, we propose a new approach of computing nuclear document similarity along with a new framework of document analysis. The proposed algorithm of nuclear document similarity considers both document-to-document similarity (${\alpha}$) and document-to-nuclear system similarity (${\beta}$), in order to derive the final score (${\gamma}$) for the decision of whether the presented case is of strategic material or not. The final score (${\gamma}$) represents a document similarity between the past cases and the new case. The score is induced by not only exploiting conventional TF-IDF, but utilizing a nuclear system similarity score, which takes the context of nuclear system domain into account. Finally, the system retrieves top-3 documents stored in the case base that are considered as the most similar cases with regard to the new case, and provides them with the degree of credibility. With this final score and the credibility score, it becomes easier for a user to see which documents in the case base are more worthy of looking up so that the user can make a proper decision with relatively lower cost. The evaluation of the system has been conducted by developing a prototype and testing with field data. The system workflows and outcomes have been verified by the field experts. This research is expected to contribute the growth of knowledge service industry by proposing a new system that can effectively reduce the burden of relying on costly human experts for the export control of nuclear materials and that can be considered as a meaningful example of knowledge service application.

• Proceedings of the Korean Society for Bioinformatics Conference
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• 2006.02a
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• pp.46-55
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• 2006

(주)지노믹트리는 DNA 마이크로어레이 기술을 기반으로 하는 분자진단회사로서, 다음의 세가지 사업에 전력하고 있다. 첫째는 독창적이며 특화된 바이오마커 발굴기술 (MAGIC system)을 바탕으로 각종 암진단을 위한 바이오마커 개발연구 두 번째는 당사의 원천 기술인 다중동시검출 시스템을 이용한 질병 진단 시스템 및 증폭시스템 세 번째는 마이크로어레이 기술을 이용한 유전자 발현 분석, Array CGH, DNA 메틸레이션 분석 그리고 miRNA 검출 등의 지노믹스시대의 연구를 위한 토탈솔루션을 제공하고 있다. 지난 5년간의 마이크로어레이 기반기술을 이용한 자체연구 활동을 수행하면서 축적된 마이크로어레이 관련기술 노-하우들을 국내 마이크로어레이 연구자들에게 공급하기 위하여 노력하고 있다. 특히 당사의 지노믹서비스 부문은 유전자 발현 분석 솔루션 제공을 위해서 자체적으로 제작하여 공급하고 있는 human cDNA(17K/25K) 및 rat cDNA (5.0K) 마이크로어레이, Human (22K) 및 mouse (10K) 올리고뉴클레오타이드 마이크로 어레이 그리고 미생물 연구를 위한 대장균 (6K) 및 폐렴균 (2.2K) 올리고뉴클레오타이드 마이크로어레이 제공 및 이를 이용한 유전자 발현 분석 서비스를 제공하고 있다. 체적으로 제작되는 마이크로어레이 서비스는 2001년 도입한 ISO9001 품질인증시스템의 기반하에서 제작부터 생산까지의 엄격한 품질관리 과정을 거쳐서 고품질의 마이크로어레이를 이용한 분석서비스를 제공 하고 있다. 또한 고객요구형 서비스를 위하여 국외 유수의 마이크로어레이 회사 (Agilent, Microarray Inc, TIGR, Eurogentec 등)의 whole genome 기반의 마이크로어레이 제품을 이용한 분석서비스를 제공하고 있으며 마이크로어레이 실험을 위해서 필수적으로 이용되고 있는 시약 (labeling kit), 마이크로어레이 hybridization을 위한 hardware (hybridization chamber, hnay centrifuge)등을 자체적으로 개발하여 공급하고 있다. DNA copy number 측정을 위한 Array CGH 분석을 위해서는 자체적으로 제작공구하고 있는 human cDNA 마이크로어레이 (17K/25K) 그기고 rat (5.0K) 마이크로어레이를 이용한 분석서비스 및 whole genome 기반의 Agilent 올리고뉴클레오타이드 CGH 어레이 (44K, 35Kb resolution)를 이용한 분석서비스를 제공하고 있다. Epigenetic study를 하는 연구자들을 위한 메틸레이션 마이크로어레이 분석 서비스를 제공하고 있다. 기존분석법인 Bisulfite 처리기반의 분석이 아닌 enzyme digestion후 PCR 증폭방법을 이용한 분석방법을 이용함으로써, bisulfite 처리에 의한 DNA 손실문제를 최소화 하였다. 현재 50개의 문헌을 통해 잘 보고된 메틸레이션 유전자들에 대한 분석서비스를 제공하고 있으며, 지속적으로 표적컨텐츠의 숫자를 증가시킬 예정이다. 최근 많은 연구자들의 관심을 끌고 있는 micro RNA 검출을 위한 DNA 마이크로어레이 서비스를 제공할 예정이다 (2006년 3월 출시). 현재 까지 알려진 약 320개의 모든 miRNA를 탑재하고 있는 소형 DNA 마이크로어레이를 이용한 분석서비스로서 1장의 마이크로어레이 실험을 통하여 알려진 모든 miRNA의 비교분석이 가능하다. 마이크로어레이 실험 뿐만 아니라 data 분석을 위한 software도 상당히 중요한 비중을 차지하고 있다 이를 위하여 (주)지노믹트리는 Agilent에서 개발한 GeneSpring GX (유전자 발현 분석), Signet (마이크로어레이 database) 및 GeneSpring GT (SNP 분석)를 공급하고 있다. 통계적인 기반 지식의 없은 일반 user들을 위한 간편하면서도 종합적인 기능을 포함하고 있는 우수한 프로그램으로 이미 국제적으로 많은 인정을 받고 있다. (주)지노믹트리는 국내외 많은 연구자들의 경제적, 시간적 연구여건을 고려한 마이크로어레이 토탈솔루션을 제공하고 있으며, 실험 분석에서 data 마이닝 그리고 마이크로어레이 실험 디자인에 이르는 토탈솔루션을 제공하고 있다.

• KIPS Transactions on Software and Data Engineering
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• v.3 no.9
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• pp.361-368
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• 2014

The LPR(License plate recognition) system has been developed to efficient control for complex traffic environment and currently be used in many places. However, because of light, noise, background changes, environmental changes, damaged plate, it only works limited environment, so it is difficult to use in real-time. This paper presents a heuristic segmentation algorithm for robust to noise and illumination changes and introduce a real-time license plate recognition system using it. In first step, We detect the plate utilized Haar-like feature and Adaboost. This method is possible to rapid detection used integral image and cascade structure. Second step, we determine the type of license plate with adaptive histogram equalization, bilateral filtering for denoise and segment accurate character based on adaptive threshold, pixel projection and associated with the prior knowledge. The last step is character recognition that used histogram of oriented gradients (HOG) and multi-layer perceptron(MLP) for number recognition and support vector machine(SVM) for number and Korean character classifier respectively. The experimental results show license plate detection rate of 94.29%, license plate false alarm rate of 2.94%. In character segmentation method, character hit rate is 97.23% and character false alarm rate is 1.37%. And in character recognition, the average character recognition rate is 98.38%. Total average running time in our proposed method is 140ms. It is possible to be real-time system with efficiency and robustness.

• Journal of Food Hygiene and Safety
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• v.24 no.1
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• pp.1-11
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• 2009

Consumers are very concerned about food safety as the risk with food increased. This study was conducted to evaluate the perceptions and practices of consumers on food safety in order to collect some information for the development of consumer education program. Total 500 consumers were asked to answer for survey constituted with 6 questions of generic information, 4 of food safety perceptions and 8 of food safety practices from June to July, 2006. More than half of respondents (51.8%) were unsatisfied with the food safety management of government while the individual practices on food safety were satisfactory. Especially, most respondents (98.7%) checked the expiration date of food when they purchased and 97% of respondents were washed hands before food preparation. The higher food safety perception, the better food safety practices of consumers. These results suggest that the systematic and continuous educations on food safety hazards and the principles of sanitation management are necessary for safe food handling and perception on food safety.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.2
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• pp.157-165
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• 2012

The specific gravity is heavily focused on the service industry in the economic development of domestic and overseas in these days. This will be predicted to increase persistently in the future society. Therefore the franchise system has been diffused as one of a management methods for these service industry. The franchise system is an advanced country's circulation system which has been populated in an advanced country. After the opening of circulation market, rapid growing trend has been showing on foreign country's popular brands in the local domestic market. So the franchise system has been largely focused on among the domestic manufacturing and the circulation companies. This study is to review how the management characteristics(headquarters' supports, communication, menu development, compensation) will affect the fairness perception of franchisee owner. The results of my study are as follows; It appeared that communication, menu development and compensation affected all the distribution fairness and the procedure fairness affirmatively.

• Korean Journal of Ecology and Environment
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• v.51 no.1
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• pp.105-123
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• 2018

Currently, satellite images act as essential and important data in water resources, environment, and ecology as well as information of geographic information system. In this paper, we will investigate basic characteristics of satellite images, especially application examples in water resources. In recent years, researches on spatial and temporal characteristics of large-scale regions utilizing the advantages of satellite imagery have been actively conducted for fundamental hydrological components such as evapotranspiration, soil moisture and natural disasters such as drought, flood, and heavy snow. Furthermore, it is possible to analyze temporal and spatial characteristics such as vegetation characteristics, plant production, net primary production, turbidity of water bodies, chlorophyll concentration, and water quality by using various image information utilizing various sensor information of satellites. Korea is planning to launch a satellite for water resources and environment in the near future, so various researches are expected to be activated on this field.

• Archives of design research
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• v.20 no.3 s.71
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• pp.299-314
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• 2007

For the past 20 years, the growth and development of university-design-educational institutes contributed to the industrial development of our country. Due to the technological fluctuation and changes in the industrial structure in the latter half of the 20th century, the enterprise is demanding professionally-oriented design manpower. The principle which appears from instances of the advanced nations is to accommodate the demands in social changes and apply them to educational design programs. In order to respond promptly to the industrial demand especially, the advanced nations adopted "multidisciplinary design education programs" to lead innovation in the area of design globally. The objective of the research consequently is to suggest an educational system and a program through which the designer can be educated to obtain complex knowledge and the technique demanded by the industry and enterprise. Nowadays in order to adapt to a new business environment, designers specially should have both the knowledge and techniques in engineering and business administration. We suggest that the IPDI, a multidisciplinary design educational system and program is made up of the coordinated operation of major classes, on-the-job training connection, educational system for research base creation, renovation design development program for the application and the synthesis of alternative proposals about the training facility joint ownership by connecting with the education of design, business administration and engineering.

• Convergence Security Journal
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• v.14 no.4
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• pp.73-84
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• 2014

As the society turns into more of an information an technology centric society, the importance of information security is being increased these days. Recently, as the number of leaking accidents of personal information and valuable industrial technology is on the rise, every field of industry endeavors to come up with a security solution. In particular, since defense industry is a field where it establishes national defense power that is essential of national security, it requires higher standards of security solutions than any other ordinary fields of industry. According to Defense Industry Security Work Instructions, defense industry firms from security organizations and employ a security worker corresponding to the firm's scale and conditions. In an environment where essential information and technology are stored and managed in information and communication system or storing media, the duty and role of IT security workers are crucial. However, there is a shortage of systematic analysis on the work of IT security workers and development of curriculum to enhance their professionalism. Thus DACUM process, a job analysis technique, was used to identify IT Security workers' duties and responsibilities and verify the validity and credibility of the deducted results from the survey. The findings of this study will help in development of IT security duty in defense industry and can be used as baseline data for the development of curriculum and amendments of related regulations.

• Management & Information Systems Review
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• v.36 no.5
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• pp.1-26
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• 2017

In the meantime, research on corporate informatization focuses on the completeness of information technology itself and its financial effects, so there is insufficient research on whether information technology can support business strategy. It is necessary to verify whether the management strategy implementation of the company can be led through the informatization of the enterprise and the relation between the main mechanism factors and the informatization performance. In this study, what a mechanism factor is applied in the process of result creation of informatization from three mechanism perspectives such as selecting mechanism, learning mechanism and coordinating mechanism with cases of representative domestic IT company and what an importance mechanism factors have been ascertained. This study results in 8 propositions. For a main agent of companies, securement of information capability of organizations has been selected to realize informatization results and investment of informatization has been selected to solve organizational decentralization problems as the most important factor. Additionally, as competition in the industry gets fierce, investment on informatization has been changed to a utility way of implementation of strategies and decision on investment has been made through the official process and information technology. Differentiated company capability has been made based on acquisition of technical knowledge and company information has been expanded to its whole employees through the information system. Also, informatization change management and outside subcontractor management have been acknowledged as an important adjustment factor of company. The first implication of this study is that since case studies on mechanism factors that preceding studies on informatization results did not empirically cover have directly been dealt with based on experiences of executives in charge of business and in charge of informatization, this study can provide practical views about factors that should be mainly managed for informatization results of IT companies. Secondly, since ser-M framework has been applied for IT companies for the first time, this study can academically contribute to companies in other fields about main mechanism factors for result creation of informatization based on deeper understanding and empirical cases.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.475-478
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• 2011

driver for safety always check the status of their vehicle, and it is essential to understand. But if you want to know the status of the driver of the vehicle in specialist referral time and money because it costs the operator shall be paid. Today's rapidly changing IT technology with the development of the various features of your phone to check the status of the vehicle was able to do. However, the car's existing phone system, car diagnostic expertise must be learned because it will reveal the status of the vehicle do not have the expertise to not highlight the need for diagnostic. To reflect these points in smartphone users to easily use their own vehicles at a time to determine the status of a system that is required. In this paper, OBD-II protocol conversion WiFi OBD-II connector, retrieving information from the driver of the vehicle replacement cycle of consumables required vehicle inspection, vehicle problems in real-time diagnostic information to the user ease of use shows the IOS implementation in the automotive supply was implemented based on the smartphone.