• Proceedings of the KIEE Conference
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• 2008.11a
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• pp.122-124
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• 2008

Korea Electric Power Research Institute has being carried out an IEC 61580 communication service test on IED trial products developed related to power IT project "The verification of Performance of the Substation Automation System and Its Field Test". This paper describes control testing, one of the IEC 61850 conformance testing items, which consists of DO, enhanced DO, SBO and enhanced SBO with a number of test cases.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.239-240
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• 2008

Korea Electric Power Research Institute has being carried out an IEC 61580 communication service test on IED trial products developed related to power IT project, "Development of Prototype for Advanced Substation Automation System based on the Digital Control Technology". This paper describes GOOSE testing, one of the IEC 61850 conformance testing items, which consists of 14 publish and subscribe test cases.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.19-20
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• 2008

IEC 61850 is a new approach international standard which is applicable to Substation Automation System (SAS) and defines the communication between intelligent electric devices (IEDs) in the substation and the related system requirements. It already has a significant impact on the development of different devices or systems used in substation. Conformance claims and the establishment of their validity are important parts of the acceptance of systems and equipment. This paper introduces the conformance testing, mapping of IEC 61850 services and MMS services, and in case study part it gives the example of testing OCR IED.

• Journal of the Korean Society for Nondestructive Testing
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• v.19 no.1
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• pp.34-46
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• 1999

전 세계적으로 항공기의 노후화에 따른 안전성 확보와 수명연장을 위한 대책 연구가 활발하다. 미국의 경우 군용기 (주로 수송기)의 평균수명은 40년을 넘어서고 있으며 이들은 아직도 $20{\sim}30년$ 더 사용될 예정이다. 민간항공기의 경우에도 군용기만큼은 아니지만 노후화하고 있기는 마찬가지이다. 수명연장을 위해 여러가지 비파괴검사 기술이 활용되고 있으며, 새로운 비파괴 시험 평가 검사 방법들이 속속 개발되고 있다. 항공기의 안전을 위협하는 기체구조 손상의 2대 주범으로는 부식과 피로를 꼽을 수 있으며, 이를 탐지하고 평가하기 위한 경제적인 검사방법에 대한 연구가 미국을 중심으로 활발하게 진행되고 있는데, 이에 대한 최근 현황을 살펴본다.

• Proceedings of the IEEK Conference
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• 2002.06a
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• pp.235-238
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• 2002

In this paper we describe the design and implementation of Electrical Ground Support Equipment(EGSE) for the CBS transponder testing. The main task of EGSE is to check out satellite systems, at system or subsystem level, during integration and validation phases of their life-cycle. Through a combination of hardware and software elements, EGSE supports manual, semi-automatic and fully automated testing. Automation is achieved by offering users simple, yet powerful means to write their own test application programs (test sequences) in high-level, test-oriented language and to run them in a strict real-time environment. The core of this environment is a user-configurable real-time database, containing all the information needed to calibrate acquired data, check them against predefined thresholds, automatically react to out-of-range conditions, display data using animated graphics or synoptic windows, and so on.

• Journal of Applied Reliability
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• v.2 no.1
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• pp.23-32
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• 2002

As the function of digital products gets diverse and complex, more than 30~40% job of software developing and testing group within its development cycle, concentrates on the software testing[1]. To cope with consumers'quickly changing needs, development cycle time gets short, and the number of model and test items increase steadily This is why automating software basic function and UI(User Interface) verification is needed [4][5][6]. This paper draws many strength and weakness defines Input/Output through integrating mobile phone, DVDP, PDA, and Black-Box (Intrusive (mobile) or Non-Intrusive(DVDP, PDA)) testing systematically, which brought above the 64% average of automation rate, and ensure 80% of test coverage [4][5][6].

• The Transactions of the Korea Information Processing Society
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• v.4 no.11
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• pp.2832-2839
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• 1997

In this paper, a testing architecture and procedure that an idle ATM virtual channel can be utilized for TCP channel is proposed. Four kinds or methodologies for protocol conformance testing have been standardized in ISO. Remote testing method used popularly have some disadvantages that developer must operate system manually in case of System Under Test (SUT) active testing and we cannot control and observe Implementation Under Test (IUT) often. It is proper to adopt distribute testing method than remote test in order to maximize test coverage and optimize fault coverage for conformance testing in ATM systems, and it is required that TCP channel is prepared for distribute testing method. The proposed architecture can adopt distributed testing method without extra physical channel for testing control. Also we can maximize the test coverage and implement the automation of testing without intervention of operator sustaining normal operation of ATM equipment.

• Journal of KIISE:Software and Applications
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• v.36 no.1
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• pp.45-53
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• 2009

In these days GUI components are recognized as the important driving elements to the successful software development. Thus they must be verified. In practice, however, GUI testing for verifying the GUI components needs lots of time and high costs. Test automation for GUI testing is a promising solution to save those expenses. In this paper, we discuss some issues considered to perform GUI testing and suggest a new method that improve the GUI test case generation method based on our previous 'record & playback' approach. For this, we suggest the event generation method using the 'spy' technique and the scenario generation method that generates effectively a lot of scenarios with the generated events. In turn we describe how to create GUI test cases from the generated scenarios.

• The KIPS Transactions:PartD
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• v.17D no.6
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• pp.423-430
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• 2010

As software becomes large-scale and complicated, the need for Quality Assurance and management is increased and software testing is becoming more important. The main aims of software testing are not only detecting and handling the defects in the system but also investigating and managing the present system. But automatic testing tools require lots of time and efforts to detect and manage the risk in the system because test-cases used in the general automatic testing tools have the simply static information. In this thesis, the dynamic management technique for weighted testcases is designed to test the high-risk testcases preferentially by giving the testcases dynamic weight.

• Journal of the Korean Society for Nondestructive Testing
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• v.22 no.4
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• pp.347-353
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• 2002

A structure of a glass electrode-type pH sensor for measuring any concentration of $H^+$ in an aqueous solution was embodied with bulk micromachining technology. Two open well structures were formed, and a reference electrode was secured by the Ag/AgCl thin film in the sloped side of the etched structure. A sensitive membrane of an indicator electrode for generating a potential by an exchange reaction to $H^+$ was made with a glass containing Na 20% or more finely so that its thickness might be $100{\mu}m$ or so, and then it was bonded to one pyramidal structure. A liquid junction for a current path was formed by filling an agar in the anisotropically etched part of the Si wafer, which had a size of $50{\mu}m{\times}50{\mu}m$, and then bonded it to the other. After complete fabrication of each part, it was filled with a 2M KCl reference solution and encapsulated the sensor structure with a cold expoxy. The potential value of fabricated pH sensor was about 90mV/pH in the standard pH solutions.