• The Journal of Information Systems
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• v.12 no.1
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• pp.145-158
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• 2003

Workflow is the automation of a business process, in whole or part, during which documents, information or tasks are passed from one participant to another for action, according to a set of procedural rules. The software selection problem is made difficult by the multiplicity of competing products and the lack of expertise and experience of users in the methods of software evaluation. Although the selection process for workflow is similar to that proposed for the acquisition of any software packages, differences arise in their evaluation criteria and choice methods. In this paper, we suggest the Analytic Hierarchy Process(AHP) method for selecting workflow software. The AHP is an intuitively easy method for formulating and analyzing decisions. It was developed to solve a specific class of problems that involves prioritization of potential alternate solutions. We showed how to evaluate 9 commercial workflow products by deciding the relative importance of the main criteria in the AHP model. We utilized the evaluation data for criteria ready suggested by specialist groups. Our methodology will be helpful to those who are going to adopt a best workflow product in their organizations. Although the criteria and their evaluation scores regarding workflow products are suggested, it is not easy to apply them to a real case and get solutions without a model.

• Journal of Electrical Engineering and Technology
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• v.11 no.5
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• pp.1466-1474
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• 2016

• Journal of the Korea Institute of Military Science and Technology
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• v.23 no.4
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• pp.389-398
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• 2020

Test cases in the existing weapon system software were created manually by the tester analyzing the test items defined in the software integration test procedure. However, existing test case generation method has two limitations. First, the quality of test cases can vary depending on the tester's ability to analyze the test items. Second, excessive time and cost may be incurred in writing test cases. This paper proposes a method to automatically generate test cases based on the requirements model and specifications to overcome the limitations of the existing weapon system software test case generation. Generate test sequences and test data based on the use case event model, a model representing the requirements of the weapon system software, and the use case specification specifying the requirements. The proposed method was applied to 8 target models constituting the avionics control system, producing 30 test sequences and 8 test data.

• Journal of Power Electronics
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• v.16 no.3
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• pp.1012-1024
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• 2016

This study deals with an on-line software fault detection, localization, and system reconfiguration method for electrical system drives composed of three-phase AC/DC/AC converters and three-phase permanent magnet synchronous machine (PMSM) drives. Current sensor failure (outage), speed/position sensor loss (disconnection), and damaged DC-link voltage sensor are considered faults. The occurrence of these faults in PMSM drive systems degrades system performance and affects the safety, maintenance, and service continuity of the electrical system drives. The proposed method is based on the monitoring signals of "abc" currents, DC-link voltage, and rotor speed/position using a measurement chain. The listed signals are analyzed and evaluated with the generated residuals and threshold values obtained from a Sliding Mode Current-Speed-DC-link Voltage Observer (SMCSVO) to acquire an on-line fault decision. The novelty of the method is the faults diagnosis algorithm that combines the use of SMCSVO and adaptive thresholds; thus, the number of false alarms is reduced, and the reliability and robustness of the fault detection system are guaranteed. Furthermore, the proposed algorithm's performance is experimentally analyzed and tested in real time using a dSPACE DS 1104 digital signal processor board.

• Journal of KIISE:Software and Applications
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• v.36 no.1
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• pp.10-20
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• 2009

As unit testing should be performed repeatedly and continuously, it is a high-cost software development activity. Although there are many studies on unit test automation, there are less studies on automated test case generation which are worthy of note. In this paper, we discuss a study on automated test data generation from source codes and indicate algorithms for each stage. We also show some issues of test data generation and introduce an automated test data generating tool: CUTIG. As CUTIG generates test data not from require specifications but from source codes, software developers could generate test data when specifications are insufficient or discord with real implementation. Moreover we hope that the tool could help software developers to reduce cost for test data preparation.

• Information Systems Review
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• v.17 no.1
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• pp.217-238
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• 2015

Much of the process in Social Science Research can be expedited with use of an automation systems that can lead to research efficiency and dramatic improvement of the research process. This study proposes use of a social science research automation system based on the cloud, which generates questionnaires, supports data collection, and intuitively processes statistical analyses of the data collected. The Cloud-based Social Science Research Automation System is developed with GNU/GPL-based open source software. We also integrate R for statistical computing to enable advanced statistical analyses such as PLS structural equation modeling, mediate effect analysis, compare between groups, and complete general statistics. The Cloud-based Social Science Research Automation system developed in this study is expected to play an important role in improving the social science research process and in performing the social science studies efficiently.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.09a
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• pp.296-299
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• 2003

This paper presents the implementation of an integrated messaging gateway (IMG) based on the open services gateway initiative (OSGi) specification to deliver home messages between home and some telecommunication devices. The IMG has four service agents to support a diverse communication channel. In this paper, we describe a software architecture for a seamless messaging and device layouts in the IMG. And then, we detail each components allowing users to be notified automatically through a cellular phone, a telephone, and the Internet.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.54-55
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• 2006

IEC 61850 기반의 변전소 자동화 시스템 구축을 위하여 현재 여러 제조업체에서 IED 개발이 이루어지고 있다. IEC 61850-10에서는 개발된 IED가 IEC 61850 국제표준을 만족하는지 검증하고자 하는 적합성 검사(Conformance Testing)에 대하여 기술한다. 본 논문은 IEC 61850-10에서 제시하는 적합성 검사에 대하여 기술하며 이를 보완하기 위한 UCA IUG(International Users Group)의 역할에 대하여 언급한다.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.381-383
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• 2005

변전소 자동화 시스템에 관한 IEC 61850 표준은 급속한 통신 기술의 변화를 수용하기 위해 실제적인 통신 서비스와 응용 영역을 분리하여 정의하였다. 이는 미래 지향적인 표준을 지향하는 것으로, 표준은 정보 모델과 추상적인 서비스 모델을 정의하고 이를 실제 통신 프로토콜에 사상(mapping)하는 방법을 제시하였다. 이러한 사상의 방법을 SCSM(Specific Communication Service Mapping)이라 명시하고 있다. 본 논문은 표준에서 제시하는 SCSM 과 사상되는 통신 프로토콜인 MMS(Manufacturing Message Specification), TCP/IP, Ethernet을 설명한다.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.42-44
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• 2005

데이터 모델링의 객체 지향적인 접근은 변전소 자동화 시스템의 설계 및 구현에 객체의 재활용과 객체 정보의 숨김과 같은 효율성을 제공한다. 변전소 자동화 시스템을 위한 IEC 61850 표준은 이러한 객체 지향 개념에 기반한 데이터 모델링을 IEC 61850 표준문서의 파트 7에서 제시하였다. 표준은 데이터를 교환하는 가장 작은 기능으로써 Logical Node(LN)를 모델링 하였고 본 논문에서는 LN을 비롯한 여러 객체 지향 데이터 모델들을 설명하고 분석하였다.