• 한국정보과학회논문지:소프트웨어및응용
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• 제33권1호
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• pp.58-68
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• 2006

요구사항은 아키텍처를 생성할 때 매우 중요한 요소로써 기능 요구사항과 품질 요구사항으로 구분된다. 기능 요구사항은 하위시스템 또는 컴포넌트 생성에 영향을 미치고 품질 요구사항은 아키텍처의 구조를 결정하는데 영향을 준다. 이와 같이 요구 사항은 아키텍처 설계에 중요한 영향을 끼치기 때문에 아키텍처 설계를 위해서는 요구사항에 대한 명확한 이해가 필요하다. 본 논문에서는 요구사항에 대한 명확한 이해를 돕기 위해 요구사항을 정량화하는 방법을 제안한다. 기능 요구사항은 기능적인 우선순위 계산을 통해 컴포넌트를 정량화하고 품질 요구사항은 정량화된 컴포넌트와 품질 속성의 연관성 계산을 통해 정량화한다. 제안된 방법은 DRAMA (Domain Requirements Analysis for Modeling Architectures) 도구를 통해 구현되었으며, 요구사항의 정량화 방법을 실 예제에 적용해본 결과를 소개한다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제33권8호
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• pp.655-667
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• 2006

본 논문은 목표 및 시나리오 기반의 요구사항을 이용하여 기능점수 (function point)를 산정하는 방법을 제안한다. 기능점수는 소프트웨어의 규모를 계산하는 방법으로 널리 사용되고 있으며 비용계산의 기본자료가 된다. 기능접수를 산정하기 위해서는 요구사항 도출 및 분석이 선행되어야 하나 기존의 기능점수 방법론은 이를 다루지 않고 있다. 한편 시스템 개발의 초기단계에서 대부분의 요구사항은 자연어 형태로 수집된다. 목표와 시나리오 방법론은 자연어 형태의 요구사항을 사용하여 요구사항을 도출하고 분석하는 방법으로 널리 사용되고 있으며 추적성에 대한 장점을 가지고 있다. 그러므로 목표 및 시나리오 기반의 요구사항으로부터 기능점수를 산정 할 수 있다면 요구사항과 기능접수 간의 추적성 관리가 쉬워진다. 이에 본 논문에서는 목표와 시나리오 기반의 요구사항으로부터 기능점수를 산정하는 방안을 제안한다. 제안된 방안은 자연어 형태로 기술된 목표 및 시나리오로부터 기능접수 분석에 필요한 규칙을 제공한다. 제안된 방안은 Order Processing System 예제를 통해 적용 방안을 설명한다.

• Nuclear Engineering and Technology
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• 제56권8호
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• pp.3286-3297
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• 2024

Traditional text-based system engineering, which has been used in the design and application of passive residual heat removal system (PRHRS) for lead-cooled fast reactors, is prone to several problems such as low development efficiency, long iteration cycles, and model ambiguity. This study aims to effectively address the abovementioned problems by adopting a model-based system engineering (MBSE) method, which has been preliminarily applied to meet the design requirements of a PRHRS. The design process has been implemented based on the preliminary design of the system architecture and consists of three stages: top-level requirement analysis, functional requirements analysis, and design requirements synthesis. The results of the top-level requirements analysis and the corresponding use case diagram can determine the requirements, top-level use cases, and scenario flow of the system. During the functional requirements analysis, the sequence, activity, and state machine diagrams are used to develop the system function model and provide early confirmation. By comparing these sequence diagrams, the requirements for omissions and inconsistencies can be effectively checked. In the design requirements synthesis stage, the Analytic Hierarchy Process is used to conduct preliminary trade-off calculations on the system architecture, after which a white box model is established during the system architecture design. Through these two steps, the analysis and design of the system architecture are ultimately achieved. The resulting system architecture ensures the consistency of the design requirements. Ultimately, a functional hazard analysis was conducted for a specific incident to validate case requirements and further refine the system architecture. Future research can further reduce the design risk, improve the design efficiency, and provide a practical reference for the design and optimization of PRHRS in digital lead-cooled fast reactors.

• 시스템엔지니어링학술지
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• 제1권2호
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• pp.43-48
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• 2005

This paper describes the results of applying States and Modes Analysis, one of the requirements analysis techniques, to the development requirements of flight control software for Smart UAV. State/mode table enabled us to investigate various operation and design concepts, and as a result essential requirements for flight control software were established without omitting necessary requirements. Through the use of scenario-specific state transition diagrams, dynamic behaviours and control/response interfaces between each state and mode could been clearly identified, which made it possible to establish requirements related to dynamic behaviours of states and modes which are essential to the design of flight control software.

• 한국IT서비스학회지
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• 제5권2호
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• pp.189-198
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• 2006

This study assumed that the best road guidance system for the vision impaired is a robot and analyzed and verified the requirements of road guidance system. In order to do so, the characteristics and inconveniences of the vision impaired as passengers and pedestrians were examined and their reactions to warnings and dangerous situations were analyzed. Users' needs and robots' functional requirements were applied to analyze the requirements of road guidance system. To verify whether the proposed requirements would be applied to robots effectively, a service scenario was used.

• 한국전자거래학회지
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• 제12권4호
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• pp.1-15
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• 2007

추적 링크는 요구사항과 아키텍처 설계서, 소스 코드, 테스트 케이스 등과 같은 시스템 산출물들 사이의 논리적인 연결을 의미한다. 이러한 추적 링크는 요구사항 변경 영향 분석, 요구사항 충돌 분석, 요구사항 일관성 점검에 매우 유용하다. 그러나, 복잡한 소프트웨어 개발시 많은 다양한 산출물들이 만들어지므로 추적 링크를 생성하거나 운용하는 것은 많은 부담을 초래한다. 본 논문은 가치분석을 근간으로 하고 휘처를 중간 매개체로 활용하는 휘처 기반의 요구사항 추적 기법을 제안한다. 이는 사용자 요구사항과 산출물간의 추적 링크를 생성하기 위한 중간 매개체로 휘처 개념을 적용하였고, 식별된 휘처들의 상세화 정도를 추정하기 위하여 요구사항의 우선순위에 따른 가치 평가를 포함한다. 또한, 본 논문에서 제안한 휘처 기반의 요구사항 추적 기법을 아파트 단지 내 홈 서비스를 통합하는 유비쿼터스 플랫폼에 적용한 사례의 결과를 기술한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.419-419
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• 2000

This paper describes a requirement analysis for automotive engine design using a computer aided systems engineering tool RDD-100. Because the engine is a complex system with many subsystems, there are many needs of stakeholder throughout the life-cycle of the engine. The originating requirements have been derived from the needs and decomposed into leaf-node requirements with the tool. Many requirement errors have been detected during the decomposition process and resolved by modifying the requirements. Inconsistency problems have been also resolved with the tool, Analysis of engine requirements using RDD-100 brings clarity to engine design early in the development process.

• 한국IT서비스학회지
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• 제18권2호
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• pp.37-54
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• 2019

The purpose of this study is to present an evaluation model to measure the clarification level of stakeholder requirements of public sector software projects in the Republic of Korea. We tried to grasp the quality of proposal request through evaluation model. It also examines the impact of the level of stakeholder requirements on the level of system requirements. To do this, we analyzed existing research models and related standards related to business requirements and stakeholder requirements, and constructed evaluation models for the system operation concept documents in the ISO/IEC/IEEE 29148. The system operation concept document is a document prepared by organizing the requirements of stakeholders in the organization and sharing the intention of the organization. The evaluation model proposed in this study focuses on evaluating whether the contents related to the system operation concept are faithfully written in the request for proposal. The evaluation items consisted of three items: 'organization status', 'desired changes', and 'operational constraints'. The sample extracted 217 RFPs in the national procurement system. As a result of the analysis, the evaluation model proved to be valid and the internal consistency was maintained. The level of system operation concept was very low, and it was also found to affect the quality of system requirements. It is more important to clearly write stakeholders' requirements than the functional requirements. we propose a news classification methods for sentiment analysis that is effective for bankruptcy prediction model.

• 한국IT서비스학회지
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• 제8권1호
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• pp.113-124
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• 2009

Value-based requirements engineering process, called The ViRE(Value-Innovative Requirement Engineering) was suggested to create an uncontested market using ERRC(Eliminate, Reduce, Raise, Create) requirements analysis. But ViRE did not provides a quantitative data analysis method for ERRC decision so as to make objective decisions for customers. In this paper, to solve this problem, we suggest a quantitative ERRC analysis method by estimating requirements cost. Our method defines user requirements and decides their weight. Then, it makes quality level table for all the identified requirements and function modules and estimate implementation cost based on their quality levels. Finally, assess each requirement's impact and then evaluate ERRC value. We could get the more objective ERRC values by evaluate the requirement weight. functional module weight, and implementation cost. And we proved the efficiency of our model by a case study, smart student ID system.

• 대한안전경영과학회지
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• 제13권4호
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• pp.9-16
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• 2011

Modern systems become more complex and the demand for systems safety goes up sharply. Thus, the proper handling of the safety requirements in the systems design is getting greatly increased attention these days. Hazard analysis has been one of the active areas of research in connection with systems safety. In this paper, we study a subject on how the hazard analysis results can be incorporated in the systems design. To this end we set up a goal on how to systematically generate safety requirements that should reflect hazard analysis results and be implemented in the systems design and development. To do so, we first review the process for systems design and suggest the associated Model. Then the process and results of hazard analysis are analyzed and Modeled particularly with emphasis on the safety data. The resulting data Model incorporating both the hazard analysis and system life cycle is used in the generation of safety requirements. Based on the developed data Model, the generation of the requirements, the construction of requirements DB, and the change management later on is demonstrated through the use of a computer-aided software tool.