• KIPS Transactions on Software and Data Engineering
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• v.2 no.11
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• pp.739-746
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• 2013

Variability of the software product line that differentiates member products within a product line must be described with precise meaning and visualized so as easy to select. Moreover, it should be easy to manage. Variability description approaches can largely be divided into two approaches, integrated variability description approach and orthogonal variability description approach. Orthogonal Variability Description Language (OVDL) was developed for clear and precise description of variability without ambiguity. This paper validates the variability description capability of OVDL by translating the variability models of Inter-Working Function (IWF) product line described by using Orthogonal Variability Model (OVM) notations into variability descriptions in OVDL.

• Journal of KIISE:Software and Applications
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• v.32 no.3
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• pp.163-172
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• 2005

Product Line Engineering (PLE) has been widely accepted as a representative software reuse methodology by using core assets. Product line architecture (PLA) is a key element of core assets. However, current research works on designing PLA do not provide sufficient and detailed guidelines of defining PLA and reflecting variability in the architecture. In this paper, we present a reference model of PLA and propose a process to design PLA with detailed instructions. Especially architectural variability is codified by describing decision model depending variation points and traced through PLA activities. The proposed process would make it feasible to apply PLE to practice areas.

• Asia Marketing Journal
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• v.21 no.2
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• pp.21-49
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• 2019

This study examines a model which simultaneously contains two paths between waiting line and purchase intention: one tested the positive effect of waiting line through consumers' perceived quality, whereas another one go through consumers' emotional state to test the negative effect of waiting line on purchase intention. To further understand perceived quality, the study divided perceived quality into perceived product quality and perceived service quality. The study used restaurants in the experiment. Results indicated that although long waits in line will directly increase both consumers' product quality perception and negative emotions, the total indirect effects on purchase intention are still significantly positive. For consumers' perceived service quality, long waiting situations have no such effect on it. Significant results from a moderation analysis also shown that consumers in low-level knowledge settings are more influenced by waiting lines than those in high-level knowledge settings when they make the product's quality-related judgment. However, the level of consumer knowledge does not moderate the relationship between waiting lines and service quality.

• Journal of Korean Institute of Industrial Engineers
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• v.39 no.1
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• pp.1-9
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• 2013

The current manufacturers have generated tremendous amount of digitized product data to efficiently share and exchange it with other stakeholders or various software systems for product development. The digitized product data is a valuable asset for manufacturers, and has a potential to support high level strategic decision makings needed at many stages in product development. However, the lack of studies on extraction of key performance indicators(KPIs) from product data management(PDM) databases has prohibited manufacturers to use the product data to support the decision makings. Therefore this paper examines a possibility of an architecture that supports KPIs for evaluation of product development performances, by applying multidimensional product data model and on-line analytic processing(OLAP) to operational databases of product data management. To validate the architecture, the paper provides a prototype product data management system and OLAP applications that implement the multidimensional product data model and analytic processing.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.373-375
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• 2002

빠르게 변화하는 시장의 요구에 대응하고자 특정 도메인에 속하는 애플리케이션 간의 재사용을 높이려는 Product-Line에 대한 연구가 진행되고 있다. Product-Line에서는 도메인 내의 여러 애플리케이션 간의 차이점과 공통정을 분류하는데 Feature Modeling이라는 개념을 주로 사용하고 있다. 이러한 Feature를 추상화하여 메타 모델로 나타내고 정령과 기법을 통하여 명세화 한다면, 기존의 Feature 모델에서 발견해내지 못하는 feature들과 관련 요소들을 추출하고, 명세화를 통한 통일된 해석이 가능하며 , Feature Model에 대한 reasoning, 충돌에 대한 예측 및 면상 등의 지원이 가능할 것이다. 따라서 본 논문에서는 Multi-paradigm 명세 언어를 제공하여주는 KAOS 방법을 적용하여, 추상화 수준에서의 메타 모델을 제안하고, Feature를 명세와 하고 습득하는 방안을 제시하고자 만다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.5 no.3
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• pp.268-273
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• 2005

We propose the specialized product-line development methodology for developing the embedded system of an MSDFS (Multi Sensor Data Fusion System : called MSDFS). The product-line methodology provides a simultaneous design between software and hardware, high level reusability. However this is insufficient in requirement analysis stage due to be focused on software architecture, detailed design and code. Thus we apply the business model based on IDEF0 technique to traditional methodology. In this paper, we describe the processes of developing Core-Asset, which are requirement analysis, feature modeling, validation. The proposed model gives the efficient result for eliciting features, and ensures the high level reusability of modules performing on embedded system.

• Journal of Advanced Marine Engineering and Technology
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• v.32 no.4
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• pp.611-617
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• 2008

In ubiquitous environments, the content adaptable services can be dynamically provided to adapt the frequent changes of contexts. These services have common things that the kinds of context factors are limited to ubiquitous environment, though the contexts are flexible. To reuse service architecture can be reasonable for effective adaptable service. In this paper, we design a software architecture with product line techniques for content adaptable applications in ubiquitous environment. Description of product line is to define variation points and their variants, to find out the dependencies between them and to keep the model based architecture, their alternatives.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.673-675
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• 2001

본 논문에서는 Product line 개념을 활용하여 체계적으로 각 어플리케이션에 적합한 소프트웨어 테스트 프로세스를 생성할 수 있도록 하는 1)“소프트웨어 테스트 프로세스의 재사용 방안”을 제안하고, 2) 이를 자동화한 “소프트웨어 테스트 프로세스 생성 도구”프로토타입을 제시한다. “소프트웨어 테스트 프로세스의 재사용 방안”은 product line 개념에 따라 표준, 방법론과 도메인을 위한 개발 프로세스들의 공통점과 차이점을 분석하여 core asset들을 CBD개념의 컴포넌트들로 개발하고, 이 core asset들을 가지고 컴포넌트의 맞춤 패턴을 이용하여 손쉽게 각 어플리케이션에 적합한 테스트 프로세스를 생성할 수 있도록 한다. “소프트웨어 테스트 프로세스 생성도구”는 “소프트웨어 테스트 프로세스 재사용 방안”의 core asset 개발 단계에서 개발된 core asset들을 저장소에 재사용을 목적으로 저장하며, 프로덕트 개발 단계를 자동화하여 각 어플리케이션에 적합한 테스트 프로세스를 생성한다.

• The KIPS Transactions:PartD
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• v.12D no.4 s.100
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• pp.589-600
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• 2005

Application developers need effective reuseable methodology to meet rapidly changes and variety of users requirements. Product Line and CBD(Component Based Development) offer the great benefits on quality and productivity for developing the software that is mainly associate with reusable architectures and components in a specific domain and rapidly changing environments. Product line can dynamically focus on the commonality and variety feature model among the products. The product line uses the feature modeling for discovering, analyzing, and mediating interactions between products. Reusable architectures include many variety plans and mechanisms. In case of those architecture are use in product version for a long time, It is very important in architecture product line context for product line design phase. Application developer need to identify the proper location of architecture changing for variety expression. It is lack of specific variety managements to design the product line architecture until nowdays. In this paper, we define various variety types to identify the proper location of architecture changing for variety expression and to design the reusable architecture. We also propose architecture variety on feature model and describe variety expression on component relations. We implemented the web learning system based on the methodology. We finally describe how these methodology may assist in increasing the efficiency, reusability, productivity and quality to develop an application. In the future, we are going to apply the methodology into various domain and suggest international and domestic's standardization.

• Korean Journal of Pharmacognosy
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• v.40 no.1
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• pp.77-81
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• 2009

Abies nephrolepis(Pinaceae) extracts were tested for determined immune system regulating activity based on antiinflammatory activity, antioxidant activity and anti-proliferative effect on HeLa cell line. The A. nephrolepis extracts increased dose-dependently anti-proliferation of HeLa cell line. The DM fraction of the extracts having anti-proliferatative effects of HeLa cell line was fractionalized four subfractions($D1{\sim}D4$). Inflammation-induced NO production was inhibited by D2 and D4 in LPS-activated RAW264.7 macrophages. And also, this fractions showed antioxidant activity examined by DPPH radical scavenging effects. These results suggest that the potential use of DM fraction of A. nephrolepis in chemoprevention and regulation overproduction of NO on pathogenic conditions. The mechanism of the inflammatory effects, however, must be evaluated through various parameters in the induction cascade of NO production.