• 경영과정보연구
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• 제11권
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• pp.45-69
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• 2002

One of important technology that must improve compulsorily on information-oriented society stores, search and transmit cultural contents data of great quantity in heterogeneous environment. SAN appeared by solution to resolve the problem such as integration management of heterogeneous system data, effective practical use of storage, data transmission limit is happened from here. SAN is system that manage and shares data of large quantity efficiently attaching directly to high speed network such as Fiber Channel that storage system has been attached to server individually SAN became more complicated than existent storage environment although offer much advantage such as decrease of storage expense and flexibility of system configuration. This study argues management way could consider in such environment that understand complexity and component of networked storage system.

• 설비공학논문집
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• 제11권6호
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• pp.799-807
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• 1999

Exergy analysis is widely used in energy system analysis for more efficient energy use. Pinch technology has focused on chemical plants, such as pure heat exchanger networks. In this study, the objective is to seek more effective means with integrating above two methods. In order to demonstrate effective result and to prove possibility for pinch analysis, the steam turbine is adopted to make heat recovery in the heat exchanger network. Three cases are introduced using the integration of exergy and pinch analysis. The standard steam turbine utility is the base case, and adding the heat pump to this system is the second case. The third case is the system with the heat pump and minimum utilities. The results show that the output power of steam turbine in the case(2) and case(3) are increased up to 42% and 46%, respectively, compared with that of base case.

• 한국멀티미디어학회논문지
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• 제19권9호
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• pp.1659-1668
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• 2016

Understanding 3D structure of scenes is of a great interest in various vision-related tasks. In this paper, we present a unified approach for estimating depth from a single monocular image. The key idea of our approach is to take advantages both of parametric learning and non-parametric sampling method. Using a parametric convolutional network, our approach learns the relation of various monocular cues, which make a coarse global prediction. We also leverage the local prediction to refine the global prediction. It is practically estimated in a non-parametric framework. The integration of local and global predictions is accomplished by concatenating the feature maps of the global prediction with those from local ones. Experimental results demonstrate that the proposed method outperforms state-of-the-art methods both qualitatively and quantitatively.

• International Journal of Computer Science & Network Security
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• 제22권9호
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• pp.376-388
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• 2022

The expansion of new applications and business models is being significantly fueled by the development of Fifth Generation (5G) networks, which are becoming more widely accessible. The creation of the newest intelligent vehicular networks and applications is made possible by the use of Vehicular Ad hoc Networks (VANETs) and Software Defined Networking (SDN). Researchers have been concentrating on the integration of SDN and VANET in recent years, and they have examined a variety of issues connected to the architecture, the advantages of software-defined VANET services, and the new features that can be added to them. However, the overall architecture's security and robustness are still in doubt and have received little attention. Furthermore, new security threats and vulnerabilities are brought about by the deployment and integration of novel entities and a number of architectural components. In this study, we comprehensively examine the good and negative effects of the most recent SDN-enabled vehicular network topologies, focusing on security and privacy. We examine various security flaws and attacks based on the existing SDVN architecture. Finally, a thorough discussion of the unresolved concerns and potential future study directions is provided.

• International Journal of Computer Science & Network Security
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• 제22권9호
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• pp.231-243
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• 2022

The expansion of new applications and business models is being significantly fueled by the development of Fifth Generation (5G) networks, which are becoming more widely accessible. The creation of the newest intelligent vehicular net- works and applications is made possible by the use of Vehicular Ad hoc Networks (VANETs) and Software Defined Networking (SDN). Researchers have been concentrating on the integration of SDN and VANET in recent years, and they have examined a variety of issues connected to the architecture, the advantages of software defined VANET services, and the new features that can be added to them. However, the overall architecture's security and robustness are still in doubt and have received little attention. Furthermore, new security threats and vulnerabilities are brought about by the deployment and integration of novel entities and several architectural components. In this study, we comprehensively examine the good and negative effects of the most recent SDN-enabled vehicular network topologies, focusing on security and privacy. We examine various security flaws and attacks based on the existing SDVN architecture. Finally, a thorough discussion of the unresolved concerns and potential future study directions is provided.

• 한국정밀공학회지
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• 제12권10호
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• pp.149-156
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• 1995

This paper presents a method of detecting chatter vibration in end-mill process. The detecting system consists of an adaptive signal processing scheme which uses an autore- gressive time-series model and a neural network is proposed and is verified its effectiveness by using acceleration and cutting force signals recorded during slotting in end-mill operations. Expeerimental results indicate that the proposed system provides excellent detection when chatter is occured within the ranges of cutting conditions considered in this study and an effectiveness of the integration of signals is confirmed.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.231-234
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• 2003

The Closed Control System, which uses exclusive network and protocol, have been adopted in TM/TC systems. However, the Closed Control System is known that it is not able to support the integration in the water management automation. There are two methods in integration solution in different types of TM/TC System. One solution is hardware system integration that is very expensive and impractical. The other solution is software system integration that uses OLE for Process Control(OPC). In this study, we recommend OPC solution, for KARICO water management, that is the practical and efficient. KARICO is using OPC technology in MMI(Man machine Interface) and water management program. Through this technology, the real-time status of reservoir, pumping station and canal can be achieved without difficulty.

• KDI Journal of Economic Policy
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• 제46권2호
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• pp.45-74
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• 2024

The import content of export (ICE) has served as an indicator of global integration for several decades. It is defined as the share of imported products embodied in exports and can be interpreted as the relative degree of the utilization of global production network (GPN) over the domestic supply chain (DSC) in terms of 'value-added.' This paper proposes two new indicators of global integration. They are defined as the ratios of imports (foreign products) to gross output (domestic products) generated by exports and can be interpreted as the relative degrees of the utilization of GPN over DSC in terms of 'production.' Both indicators are easy to compute and can be compared between years, between countries, between industries, and between groups of industries. The paper applies the new indicators to the recent edition of the OECD's Input-Output Database. Finally, the paper shows that the recent slowdown in international trade is mostly due to the decrease in the international trade of intermediate goods, with significant implications regarding the future of global integration.

• 한국인터넷방송통신학회논문지
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• 제8권6호
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• pp.141-146
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• 2008

최근 OGC(Open Geospatial Consortium)의 센서 웹에서는 센서 네트워크에서 수집된 센싱 데이터 및 영상 정보를 저장하고 관리하여 인터넷을 통해 사용자들에게 제공하는 연구가 진행되고 있다. 이와 같은 센싱 데이터 및 영상 정보를 실시간적으로 사용자에게 전달하기 위해서는 센싱 데이터를 비롯하여 오디오 및 비디오를 하나로 묶는 데이터 융합에 대한 연구가 필요하다. 이에 본 논문에서는 센서 네트워크에서 수집된 센싱 데이터와 영상을 인덱스를 이용하여 융합하는 방안을 제시한다. 이 방안에서는 동일한 노드에서 수집된 센싱 데이터와 영상의 식별 정보를 통합 인덱스에 함께 표시하고, 이를 통해 사용자가 질의할 경우 통합 인덱스를 참조하여 센싱 데이터와 영상을 동시에 제공한다. 제안된 방안을 검증하기 위해 센서 네트워크와 영상장치를 이용하여 실시간 멀티미디어 서비스 구조를 설계하고 인덱스 기반의 영상과 센서 데이터를 통합한 유비쿼터스 실시간 멀티미디어 시스템을 설계하고 구현한다. 이를 통하여 제안된 데이터 융합 방안이 영상 장치와 무선 센서 네트워크로부터 수집되는 영상과 센싱 데이터를 통합 인덱스를 이용하여 응용 서비스의 정보 요청에 따라 실시간 멀티미디어 서비스를 제공하는 것을 확인하였다.

• 한국항공우주학회지
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• 제44권9호
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• pp.825-832
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• 2016

본 논문에서는 항공전자시스템 통합시험에 사용하기 위한 데이터 버스 분석 장비 개발에 대해 기술하였다. 본 데이터 버스 분석 장비는 다양한 인터페이스를 수용할 수 있도록 대부분의 항공전자시스템에 채택되고 있는 MIL-STD-1553B, CAN(Controller Area Network), Ethernet 인터페이스 카드를 갖추었다. 버스 데이터의 수집과 분석을 동시에 효율적으로 수행하기 위해 수집 엔진과 분석 엔진은 각각의 하드웨어를 가진다. 데이터 분석 효율성을 높이기 위해 Grid, 2D 및 3D 형태의 데이터 전시 기능을 제공한다. 데이터 버스 분석 장비의 검증은 시험 절차서에 입각하여 모듈 단위 테스트 및 모듈 간 통합 테스트를 수행하였다. 실제 시험 환경인 비행체 SIL(System Integration Laboratory) 환경에서 수행된 통합시험 결과를 통해 연동 요구도 검증 및 개발된 장비의 유용성을 확인하였다.