• 정보처리학회논문지D
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• 제8D권6호
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• pp.657-664
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• 2001

최근의 정보기술은 특정 시스템 환경이나 정보구조에 의존하지 않고 정보를 공유할 수 있도록 하는 개방형 아키텍처, 소프트웨어의 재사용을 지원하는 컴포넌트와 인터넷상에서의 실시간 멀티미디어 정보 서비스를 지향하여 발전하고 있다. 지구 공간상에 존재하는 자연, 도로, 건물, 시설물 등의 공간정보를 다루는 지리정보시스템은 정보 구축의 복잡성과 정보포맷 및 처리기술의 다양화로 정보의 상호호환 및 재사용이 특히 요구되고 있는 분야이다. 본 논문은 컴포넌트 기반의 개방형 GIS 소프트웨어 기술 개발에 관한 것으로 최근 정보기술 변화의 큰 축인 개방형 시스템과 소프트웨어의 컴포넌트 추세를 GIS에 접목하여 공간정보의 상호 운용성을 지원하고 다양한 GIS 응용시스템 구축을 효율적으로 지원하는 GIS 미들웨어 개발을 목표로 하였다. GIS 분야의 기술표준기구인 OGC(Open GIS Consortium)에서 제안한 분산 개방형 공간정보처리 아키텍처를 수용하고, 다양한 응용에의 신축적인 대응을 위하여 GIS 요소기술을 제공하는 각 기능별 컴포넌트를 개발하였다. 시스템 구성은 다양한 지리정보원에 일관적인 방법으로의 접속을 위한 데이터 제공자 컴포넌트, GIS 요소기술을 제공하는 핵심공통 컴포넌트, 그리고 분산환경에서의 공간정보 유통을 지원하는 정보유통 컴포넌트로 구성되며, 이들 컴포넌트의 조합으로 5종류 지방자치단체 GIS 응용시스템을 구축하였다. OLE COM 기반의 컴포넌트 소프트웨어로 MS Windows 환경에서 ATL COM으로 개발되었으며, 20여개의 컴포넌트로 구성된다. 개발된 컴포넌트 소프트웨어는 지방자치단체간의 공간정보 통합운용을 위한 정보유통 시범사업의 기반기술로 활용되어 기술의 중요성 및 우수성이 확인되었으며, 현재 7대 지하시설물 통합관리시스템 구축 시범사업의 기반기술로 활용되고 있다.

• 한국정보통신학회논문지
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• 제21권6호
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• pp.1100-1105
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• 2017

본 논문에서는 셀룰러 통신과 D2D (device-to-device)통신이 같은 주파수를 통해 이루어지는 이기종 네트워크(heterogenous network)에서 셀룰러 망의 보안통신을 돕기 위한 D2D 통신 디바이스의 전력제어 기법을 제안하고 성능을 살펴본다. 기존의 보안통신이 고려되지 않은 이기종 네트워크에서는 D2D통신 신호가 간섭으로 작용하여 셀룰러 통신 성능에 악영향을 미쳤으나 도청자를 고려한 보안통신에서는 D2D통신 신호가 도청자의 신호수신을 방해하여 보안 전송률 성능 향상에 도움이 될 수 있다. 본 연구에서는 셀룰러 망의 보안통신 요구치를 만족시키며 D2D 통신 전송률을 극대화 시킬 수 있는 새로운 전력제어 기법을 제안하고 최적화 문제를 통해 최적 송신 전력의 closed-form 표현을 도출하였다. 또한 시뮬레이션을 통해 제안기법의 성능 특성을 확인하였다.

• 융합보안논문지
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• 제11권4호
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• pp.43-49
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• 2011

웹 기반 의료정보는 많은 편리성을 제공하지만 공개된 네트워크 환경에서 나타나는 보안 취약성을 해결하지 않은 채 정보노출의 위험속에 사용이 확대되고 있다. 웹 기반 의료정보 접근시 보안문제에 대한 안전한 방법론 강구없이 기술만 발전시키려한다면 또 다른 위협의 요소를 증가시키는 것이다. 따라서 웹에 기반한 정보활용 보안대책 으로서 웹 기반 의료정보 접근제어 보안 메커니즘 기반 설계가 필요하다. 본 논문은 소프트웨어 아키텍쳐 설계사상을 기반으로 하여 의료정보시스템 접근제어 보안 메커니즘 기반을 설계 하였다. 그 방법론은 새로운 설계절차를 도출하고 아키텍쳐를 설계하며 기능 메커니즘 알고리즘을 구성하는 것 이다. 이를위해서는 웹 기반 다중 환자 정보 접근제어를 위한 보안 아케텍쳐 인프라스트럭가 필요하다. 제안하는 소프트웨어아케텍쳐는 소프트웨어 프레임워크를 도출하고 기능 메커니즘을 구성하는 기반에 관한 구조도를 도출했다. 제안된 시스템를 활용하여 의료정보 어플리케이션을 설계할때 의료정보 사용자는 실시간으로 데이터를 검색하면서도 통합화된 접근제어알고리즘의 보장하에서 정보관리 안전성을 확보하는 시스템 설계가 가능하다.

• 산업경영시스템학회지
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• 제41권4호
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• pp.248-255
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• 2018

Ensuring the quality of molds is one of the major issues in mass production. In general, securing the quality of the molds is achieved by repeating grinding and die spotting after machining the molds based on engineer's decision. However, this heuristic method is affected by the engineer's skill and working environment. Therefore, a lot of time and resources are needed in order to ensure quality. In this study, ensuring the quality of molds using grinding map which is generated using automatic measurement is proposed. An automatic measuring system based on CMM (Coordinate Measuring Machine) is developed for measuring the molds. This system generates the measurement path automatically using the 3D CAD model of products. CAD (ComputerAided-Design), CAM (Computer-Aided-Manufacturing), and CAQ (Computer-Aided-Quality) technology is integrated using DMIS (Dimensional Measuring Interface Standard) format in the automatic measuring system. After measuring the molds, a grinding map is generated using the gap between the CAD model and measured values of mold. The grinding map displays the machining tendency and the required amount of grinding with values on a 3D map. Therefore, the quality of molds can be ensured with exactness and quickness based on the grinding map. This study shows that integrating the planning, measuring, and analyzing based on computer technology can solve the problem of quality assurance of mold using the proposed method, therefore the productivity can be increased.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.118-124
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• 2021

The article examines the formation of a competitive paradigm of economic security of industrial enterprises in the formation of a circular economy. The basic laws of industrial enterprises are formed, which determined the characteristics of competitive positions and threats. The basic competitive concepts and their application at maintenance of economic safety of the industrial enterprises in the conditions of formation of circular economy are described. Thus, the technological approach to the formation of a competitive paradigm is based on production technologies, opportunities for technological modernization and development of infrastructure and intellectual competencies. The institutional concept reveals the regulatory mechanisms for ensuring competitiveness through the protectionism of national industrial enterprises, standardization and regulation of market imbalances. The innovation-investment approach within the competitive paradigm is also manifested in the creation of competitive advantages due to the presence of active innovative developments and their commercialization, knowledge and competencies of staff, capitalization of intelligence and communications, constant updating of infrastructure and technologies. Collectively, innovation and investment effects on the level of economic security allow industrial enterprises to ensure resilience to increasing competition, the emergence of new market challenges in the formation of a circular economy. A strategic approach to the application of a competitive paradigm to ensure the economic security of industrial enterprises allows you to justify the prospects for development and design behavioral models to predict and assess potential threats. The concept of system management is based on the complexity of threat analysis, the integrity of the economic security system, system-forming functions and patterns of implementation of industrial development tasks in the formation of a circular economy. The application of the described concepts is formalized by the authors through the definition of the basic patterns, directions and characteristics of their impact on the elements of the security system of industrial enterprises in the formation of a circular economy.

• Journal of Evidence-Based Herbal Medicine
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• 제1권1호
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• pp.19-28
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• 2008

Consumers have been requiring more higher level of food and agricultural products safety. The system of Good Agricultural Practice(GAP) has been spreaded over the world. Korea also introduced the GAP system in agricultural industry. GAP is related to the production side in the whole traceability system. The establishment of GAP system is a prerequisite to secure food safety. This study reviewed the concept of GAP and necessities and backgrounds of introducing the GAP system. Also, this study analyzed the problems which have been appeared in the GAP program and proposed the policy strategies and directions for the Korean GAP system. So issues for the GAP system are as follows; computerizing of traceability system, forming the cooperative works among the related governmental departments, establishing a certification system to relate with crop features, efficient management, ensuring distribution channel and the research for estimating GAP consumer surplus is need to analyze GAP program more efficient. In addition, It is necessary to keep the records of the data to analyze the GAP program more accurately.

• Journal of Information Processing Systems
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• 제19권5호
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• pp.702-712
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• 2023

Load balancing plays a crucial role in ensuring the stable operation of information management systems during periods of high user access requests; therefore, load balancing approaches should be reasonably selected. Moreover, appropriate load balancing techniques could also result in an appropriate allocation of system resources, improved system service, and economic benefits. Nginx is one of the most widely used loadbalancing software packages, and its deployment is representative of load-balancing application research. This study introduces Nginx into an educational administration system, builds a server cluster, and compares and sets the optimal cluster working strategy based on the characteristics of the system, Furthermore, it increases the stability of the system when user access is highly concurrent and uses the Nginx reverse proxy service function to improve the cluster's ability to resist illegal attacks. Finally, through concurrent access verification, the system cluster construction becomes stable and reliable, which significantly improves the performance of the information system service. This research could inform the selection and application of load-balancing software in information system services.

• 대한안전경영과학회지
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• 제3권3호
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• pp.1-9
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• 2001

To keep an enterprise's competitiveness on the condition of the automatic manufacturing system such as FA, FMS and CIM, all the maintenance problems should be considered seriously In not only in production and maintenance but also in related industrial safety. As we analyze in the surveys the maintenance management of domestic enterprises and the causes of Industrial accident, there will be necessity of drawing up countermeasures for preventing industrial accidents and for ensuring expertise maintenance technologies. Based on these analyses, the safety information system, maintenance management information system, and the machinery condition diagnosis technique are studied by using of the knowledge-based system under the real-time computer-operating environment and using fuzzy linguistic variable. This computer system based knowledge-based diagnosis can easily provide not only the knowledge of expert system about deterioration phenomenon of industrial robots, but also the knowledge of relating safety and facility all the time. Therefore, it is expected to improve the efficiency of business processes in the production and safety when we use this system.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제54권6호
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• pp.261-268
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• 2005

This paper propose the safety design of automatic train control system which is used for controlling and monitoring train speed not to excess a permitted speed. Safety activities are shown for the computerized system to achieve a required safety requirement. The safety activities are composed of system dynamic modelling to identify potential hazards contained in the target system, to analyze sub system faults to provoke the hazards. Risks analysis are carried out to estimate losses caused from the hazards to allocate safety requirement. We Proposed design solutions for sub system to meet safety requirement.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 춘계학술대회 논문집
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• pp.404-411
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• 2004

With distribution industrial control system, the use of low cost to achieve a highly reliable and safe system in real time distributed embedded application is proposed. This developed intelligent node is based on two microcontrollers, one for the execution of the application code, also as master controller for ensuring the real time control & the logic operation with CPLD and other for communication task and the easy control execution, i.e., I/O digital input, digital output and interrupting. This paper also presents where the case NCS (Networked control system) with LonTalk protocol is applied for the filtration process control system of a small water treatment plant.