• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.377-380
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• 2005

대표적인 소프트웨어 프로세스 심사모델로서 ISO/IEC 15504와 CMMI는 숙련된 전문 심사원을 통하여 소프트웨어 프로세스의 능력수준을 결정한다. 그러나 이들 모델들은 프로세스 측정을 위한 체계적인 메트릭스를 제공하지 않으므로 심사원은 심사대상 프로세스의 정량적인 수준 측정을 위하여 주관적인 판단을 통해 프로세스를 평가해 오고 있다. 본 논문에서는 프로세스의 정량적이고 객관적인 측정을 위하여 기초 메트릭스를 정의하고 ISO/IEC 15504 에서 정의한 프로세스 그룹별 측정 표준 메트릭스를 제안한다. 또한 표준 메트릭스를 조직에 적용하기 위한 프로세스 성숙도 평가 메트릭스를 제시하여 향후 조직의 상태를 체크할수 있는 유용한 가이드라인을 제시한다.

• Journal of Energy Engineering
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• v.2 no.2
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• pp.187-193
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• 1993

Porous matrices to contain and support phosphoric acid were prepared with PTFE as binder and SiC whisker or SiC powders of various particle size for phosphoric acid fuel cell(PAFC). Among the matrix characteristics the most important factors in stack performances were thought to be the bubble pressure and electrolyte wettability And then matrix was constructed to have pore size smaller than that of electrode. The bubble pressures and wettabilities of matrices manufactured with various size of SiC and different PTFE contents were investigated and related with the porosities measured by porosimeter, and then the optimum manufacturing condition of matrix for PAFC was determined.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.259-262
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• 2004

대표적인 소프트웨어 프로세스 심사모델로서 ISO/IEC 15504(일명 SPICE)와 CMMI는 숙련된 전문 심사원을 통하여 소프트웨어 프로세스의 능력수준을 결정한다. 그러나 이들 모델들은 프로세스 측정을 위한 체계적인 메트릭스를 제공하지 않으므로 심사원은 심사대상 프로세스의 정량적인 수준 측정을 위하여 주관적인 판단을 통해 프로세스를 평가해 오고 있다. 본 논문에서는 프로세스의 정량적이고 객관적인 측정을 위하여 기초 품질 메트릭스를 정의하고 CMMI에서 정의한 프로세스 분야에 대한 표준 메트릭스를 제안한다. 또한 표준 메트릭스를 조직에 적용하기 위한 프로세스 측정 절차와 가이드라인을 제시한다.

• The KIPS Transactions:PartD
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• v.10D no.4
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• pp.719-726
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• 2003

A SPICE (Software Process Improvement and Capability dEtermination) and CMM (Capability Maturity Model) assessment can be considered as representative software process assessment models since assessors assign ratings to indicators and metrics to measure the capability of software precesses. But ail of process assessment models don't provide a subjective measurement procedure and metrics. In this paper we define basic quality process metrics and propose standard metrics for each process based on SPICE and CMM. This study also proposed a guideline for a subjective measurement procedure and the metrics are effectively use to SPI.

• KSLA Bulletin
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• s.9
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• pp.43-52
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• 2018

• Journal of KIISE:Software and Applications
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• v.27 no.3
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• pp.217-226
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• 2000

In order to develop high quality software, software metrics have been made to assess the quality of software, and recently, many object-oriented metrics have been suggested for this purpose as well. However, research on the utilization of metrics to control software quality in a development process has been inadequate. This is due to the difficulty in assessing the significance of metrics in a software development process from the perspective of overall software quality. In this paper, we propose a method of applying metrics to a development process using the Hierarchical Software Quality Model(H-SQM) which is defined in terms of the products' special features. The method represents the H-SQM as the cause-and-effect diagram and changes the diagram to the process-analysis diagram. And it applies software quality metrics to each development stage by the process-analysis diagram. In this way, we could utilize the software quality metrics efficiently in order to improve the quality of software in the software development process.

• Journal of KIISE:Software and Applications
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• v.27 no.4
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• pp.315-326
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• 2000

As Internet is being widely used as an infra of distributed applications, the most of today's softwares are changing into Internet-based distributed applications. The development methods using the middleware, like CORBA ORB, make the development of the web-based software easy. However, the performance verification method useful for an optimized software distribution is not provided at software development. Additionally, monitoring methods and metrics for dynamic load-balancing are not presented at run-time. This paper presents the method to monitor the message between objects, load metric, and metrics for load-balancing. To calculate a load of a node, we define events occurred between applications, time between the events, then extract the data related to a load. And we derive formula calculating the load from the extracted data. Then using the formula, we present the metrics for dynamic load-balancing. Moreover, we observe the utilization and efficiency of the monitoring algorithm, load metric, and load-balancing metrics.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.47 no.5
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• pp.18-24
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• 2010

In this paper, a new matrix decoding system using vector based Virtual Source Location Information (VSLI) is proposed as an alternative to the conventional Dolby Pro logic II/IIx system for reconstructing multi-channel output signals from matrix encoded two channel signals, Lt/Rt. This new matrix decoding system is composed of passive decoding part and active part. The passive part makes crude multi-channel signals using linear combination of the two encoded signals(Lt/Rt) and the active part enhances each channel regarding to the virtual source which is emergent in each inter channel. Since the virtual sources are related to the perceptual sound images in virtual sound field, the reconstructed multi-channel sound results in good dynamic perception and stable image localization. Moreover, the good channel separation is maintained with nonlinear trigonometric enhancing function.

• The KIPS Transactions:PartD
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• v.10D no.5
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• pp.745-752
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• 2003

The component-based development methodology becomes famous as the reuse technology for independence and productivity of software development It is necessary component metrics for component-based systems, because It should be measurable to improve the quality of the software. Hence, in this paper, we propose component cohesion and coupling metrics which is reflected in characteristics of component. The operation use value is calculated by the information of classes interface commonly uses to offer the component's service. And, the operation similarity value is calculated by the operations use value. Component cohesion and coupling is calculated by the operation similarity and based of the information which is extracted in the analysis phase. And, we examine the necessity of component metrics in comparison with object-oriented metrics.

• Proceedings of the Membrane Society of Korea Conference
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• 1998.04a
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• pp.26-29
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• 1998

1. 서론 : 고전 막투과 이론은 네른스트-프랑크식을 이용한 이온의 프락스, 막전위, 및 막 전도도의 관계식을 해석하는 것이 보통이다. 종전에 보고된 일련의 막투과 현상식도 마찬가지의 방식였으나, 새로히 비평형 열역학을 기초로 막 투과 현상의 메트릭스를 해석이 가능하여졌다. 지금까지 막을 투과하는 투과계수의 메트릭스의 팩타에 대한 상관 관계는 물리화학적 방법에서 취급한 것이 관례였다. 이 관걔를 수학적 방법에서 해석 및 증명하고자 한다.