• 한국산학기술학회논문지
• /
• 제17권7호
• /
• pp.425-433
• /
• 2016

경량전철시스템의 건설은 노선당 수천억 원에서 조 단위의 건설비가 소요되는 대형 복합인프라 사업으로, 건설된 시스템은 장기간 운영되기 때문에 생명주기관점에서 사업을 추진하는 것이 매우 중요하다. 시스템엔지니어링은 고객의 요구를 성공적으로 구현하는 수단 및 방법론으로 경량전철사업과 같은 대형 사업에 매우 유용하다. 이러한 시스템엔지니어링 접근법을 경량전철사업에 적용하기 위해 개발된 전산모델 SELRT(Systems Engineering application model for Light Rail Transit project)가 현장에서 활용되기 위해서는 모델에 대한 검증이 필요하다. 시스템엔지니어링에서의 검증은 시스템요구사항을 만족하였음을 확인하는 것이다. 따라서 본 논문에서는 시스템엔지니어링 방법론에 따라 검증 절차와 검증 아키텍처를 제시하고, 이에 따라 시스템요구사항을 식별하였다. 또한 시스템요구사항을 검증하기 위해 국제 표준규격 등 참조규격을 참고하여 검증요구사항 및 검증항목과 검증기준을 도출하였으며, 검증절차에 따라 SELRT를 시연하고 결과를 검증요구사항과 비교하였다. 그 결과 시스템요구사항과 검증요구사항의 추적성, 검증요구사항별 검증방법, 전산도구의 시연결과가 상호 연결되고, 최초요구사항이 SELRT에 명확히 구현되었음을 확인할 수 있어, 제안된 방법이 SELRT 검증에 유효하며, SELRT도 경량전철사업현장에서 활용될 수 있음이 확인되었다.

• Journal of Ship and Ocean Technology
• /
• 제12권1호
• /
• pp.45-56
• /
• 2008

Recently, International Association Classification Societies (IACS) has adopted the Common Structural Rules (CSR) for Bulk Carriers and Tankers, which specifies the requirement associated with the ultimate strength of hull girder structure. The theoretical background and the results of verification study are neither well summarized nor released. Furthermore, the requirement is not a form of deterministic formula but a form of program in which source code is not disclosed. The reliability of the non-linear structural analysis program is verified through the comparison with the results of the analysis and the model test. Then, the reliability of the ultimate strength requirement in CSR is checked by comparing with the results of rigorous non-linear analysis.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2007년도 제38회 하계학술대회
• /
• pp.1179-1180
• /
• 2007

Urban transit is system that offer target Performance and function because various lower part system such as vehicles, signaling, power supply, rail track is consisted as complex. It is important first of all that describe correctly system requirement until configuration of system, design, manufacture, installation and test verification so that the complicated urban transit system is to act safety and reliable and to display target Performance and function properly. The system requirement assist the system developer to comprehensive the performance and function of system in basic design. Therefore, In this paper wishes to study way to analyze system of system requirement and apply to Urban transit.

• ETRI Journal
• /
• 제25권3호
• /
• pp.179-186
• /
• 2003

Using biometrics to verify a person's identity has several advantages over the present practices of personal identification numbers (PINs) and passwords. At the same time, improvements in VLSI technology have recently led to the introduction of smart cards with 32-bit RISC processors. To gain maximum security in verification systems using biometrics, verification as well as storage of the biometric pattern must be done in the smart card. However, because of the limited resources (processing power and memory space) of the smart card, integrating biometrics into it is still an open challenge. In this paper, we propose a fingerprint verification algorithm using a multi-resolution accumulator array that can be executed in restricted environments such as the smart card. We first evaluate both the number of instructions executed and the memory requirement for each step of a typical fingerprint verification algorithm. We then develop a memory-efficient algorithm for the most memory-consuming step (alignment) using a multi-resolution accumulator array. Our experimental results show that the proposed algorithm can reduce the required memory space by a factor of 40 and can be executed in real time in resource-constrained environments without significantly degrading accuracy.

• 한국인터넷방송통신학회논문지
• /
• 제9권5호
• /
• pp.169-174
• /
• 2009

본 논문에서는 정확한 분석 모델을 제시할 수 있는 객체 모델링과 정형화 방법을 통해 개발자와 사용자간 효과적인 의사소통을 제공하고 객체모델의 정형화와 표준화에 필요한 형식명세로의 변환 규칙을 제안한다. 사용자의 요구에 따라 최적의 객체모델 선택을 위한 객체 모델 검색 프로토타입을 제시한다. 이를 통해서 적합한 모델을 선택할 수 있으므로 소프트웨어 개발시 비용과 노력을 최소화할 수 있다.

• 시스템엔지니어링학술지
• /
• 제15권2호
• /
• pp.31-38
• /
• 2019

The systems engineering standard process is intended to be customized for a given project environment and system characteristics. This study describes the experience gained by applying systems engineering to government-funded projects. The characteristics of government funded project are lack of common development process among the participating organizations and mechanism to determine system requirements. This study describes the contents of the systems engineering activities, including development of operational concept, system requirements, verification requirements (test cases), test verification plan, and implementation of system test and lessons learned from these activities.

• 한국군사과학기술학회지
• /
• 제21권5호
• /
• pp.675-683
• /
• 2018

In this paper, we have proposed a design and verification methods of electrical system and power loads for unmaned aeriel vehicles(UAVs) through electrical load analysis. In order to meet a UAV system requirement and electrical system specifications, we have designed an electrical power system for efficient power supply and distribution and have theoretically analyzed the power loads according to the power consumption and power bus design of UAV. Using electrical system rig, the designed electrical power system has been experimentally verified. Also, we have performed several flight tests to verify the UAV electrical system and power loads. It is concluded that the proposed design and verification method of electrical system for UAV system.

• 제어로봇시스템학회논문지
• /
• 제16권7호
• /
• pp.655-660
• /
• 2010

As increasing the number of Electronic Control Units in a vehicle, the proportion for reliability and stability of the software is going increasingly. Accordingly, the traditional CAN network has occurred the situation that the requirement of developing vehicle software is not sufficient. To solve these problems, the FlexRay network which is ensured the high bandwidth and real-time is generated. However it is difficult to implement FlexRay based application software because of complex protocol than traditional CAN network. Accordingly the system for analysis and verification of network state is needed. Also vehicle vendor develops application software using Matlab/Simulink in order to increase productivity. But this development method is hard to solve the network problem of node to node. Therefore this paper implements Matlab/Simulink based FlexRay network system and verifies it through comparing with existing embedded system.

• 전기학회논문지P
• /
• 제57권2호
• /
• pp.65-71
• /
• 2008

Recently, many critical control systems are developed using formal methods. When software applied to such systems is developed, the employment of formal methods in the software requirements specification and verification will provide increased. assurance for such applications. Earlier error of overlooked requirement specification can be detected using formal specification method. Also the testing and full verification to examine all reachable states using model checking to undertake formal verification are able to be completed. In this paper, we propose an eclectic approach to incorporate Z(Zed) formal language and 'Statemate MAGNUM' which is formal method tools using Statechart for applying to the railway signaling systems.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2008년도 춘계 종합학술대회 논문집
• /
• pp.236-241
• /
• 2008

경찰공무원은 공직의 체계상 특정직으로 분류된다. 대부분의 특정직은 별도의 인사법규에 근거하여 개별적 인사행정이 이루어지고 있다. 조직과 임무가 특수한 만큼 일반직에 대한 인사행정을 적용햐는데 한계가 있기 때문이다. 경찰 근무성적평정도 이러한 논리로 타 공직과는 상이한 형태로 실시되고 있다. 본 연구에서는 경찰 근무성적평정 제도의 보다 바람직한 운영을 도모하기 위해서 평정결과에 대한 검증절차를 도입할 것을 제안하였다. 다만, 제도시행 초기에는 검증대상을 최종 평정권자의 결과만으로 한정하는 것이 바람직할 것이다.