• KIPS Transactions on Software and Data Engineering
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• v.4 no.12
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• pp.549-560
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• 2015

There is a wide variety of data quality attributes such as the ones proposed by the ISO/IEC organization and also by many other domestic and international institutions. However, it takes considerable time and costs to apply those criteria and guidelines to real environment. Therefore, it needs to define data quality evaluation attributes which are easily applicable and are not influenced by organizational environment limitations. The purpose of this paper is to derive data quality attributes and order of their priorities based on customer requirements for managing the process systematically and evaluating the data quantitatively. This study identifies the customer cognitive constructs of data quality attributes using the RGT(Repertory Grid Technique) based on a Korean quality standard model (DQC-M). Also the correlation analysis on the identified constructs is conducted, and the evaluation attributes is prioritized and ranked using the AHP. As the results of this paper, the consistent system, the accurate data, the efficient environment, the flexible management, and the continuous improvement are derived at the first level of the data quality evaluation attributes. Also, Control Compliance(13%), Regulatory Compliance(10%), Requirement Completeness(9.6%), Accuracy(8.4%), and Traceability(6.8%) are ranked on the top 5 of the 19 attributes in the second level.

• Journal of Korea Society of Industrial Information Systems
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• v.21 no.6
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• pp.109-123
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• 2016

This study investigates the importance of government's support for logistics security assurance through certification programs. First, the study analyzed priorities among the requirements of logistics firms through Analytic Hierarchy Process(AHP) and Quality Function Deployment(QFD) approaches. For this process we invited 21 logistics experts to assess the relationships between logistic firms' requirements and government policies regarding logistics security using the house of quality, a set of matrices of QFD. The results of this phase of the study revealed the priorities of logistics firms' goals regarding the diffusion of the government security certification program as follows: integrated logistics security systems(40.3%), strengthening government support systems(32.4%), and operational effectiveness of logistics security certification(27.2%). Second, a relative weights applied QFD method based on AHP was applied to determined the expected outcome of the logistics security certification program. The results indicated as follows: productivity improvement(28.4%), improved level of service(26.7%), logistics cost reduction(21.6%), advanced information systems(19.7%), and improved environmental protection(3.6%). The results of this study provide new insights concerning logistics firms' requirements for supply chain security and the importance of government's support policies through logistics security certification programs.

• Proceedings of the Korea Contents Association Conference
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• 2006.05a
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• pp.405-408
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• 2006

Design of appropriate control schemes that can satisfy the cell loss, delay requirements with various traffic specification for B-ISDN is an extremely important challenging problem. In this paper, we proposes a priority control scheme with a window counter and a cell counter per each type of class. The priority control for satisfying required service quality is performed with delay/loss factor obtained by comparing window counter with cell counter. The performance of proposed control scheme is estimated by computer simulation.

• The Journal of Society for e-Business Studies
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• v.12 no.4
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• pp.1-15
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• 2007

Traceability links are logical links between individual requirements and other system elements such as architecture descriptions, source code, and test cases. These are useful for requirements change impact analysis, requirements conflict analysis, and requirements consistency checking. However, establishing and maintaining traceability links places a big burden since complex systems have especially yield an enormous number of various artifacts. We propose a feature-oriented requirements tracing method to manage requirements with cost benefit analysis, including value consideration and intermediate catalysis using features. Our approach offers two contributions to the study of requirements tracing: (1)We introduce feature modeling as intermediate catalysis to generate traceability links between user requirements and implementation artifacts. (2)We provide value consideration with cost and efforts to identify traceability links based on prioritized requirements, thus assigning a granularity level to each feature. In this paper, we especially present the results of a case study which is carried out in Apartment Ubiquitous Platform to integrate and connect home services in an apartment complex in details.

• Journal of KIISE:Software and Applications
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• v.37 no.5
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• pp.411-415
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• 2010

The Conflicts between requirements may cause a failure of functions or even project. Currently, most of researches have focused on identifying requirements and some researchers have tried to resolve requirements conflicts but it was only based on requirement priority. This paper proposes the Creative Requirements Conflict Resolution (CRRC) to resolve requirement conflicts in a creative way using TRIZ methodology. TRIZ, which means the theory of solving inventor's problems, is made based on the analysis of over 2 million patent cases and helpful for developing a creative solution to resolve conflicts. CRRC classifies requirement conflicts into groups and then apply TRIZ theory related to each group. At the result of control experiment, CRRC provides the various kinds of creative solution for requirement conflicts.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06d
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• pp.262-265
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• 2010

멀티미디어 스트리밍은 인터넷에서 이미 가장 인기있는 서비스가 되었다. 멀티미디어 스트리밍 서비스를 제공하기 위해서는 충분한 대역폭과 딜레이가 유지되어야 한다. 기존의 무선 멀티홉 네트워크는 이러한 요구사항을 만족하기 어렵다. 본 논문에서는 멀티미디어 스트리밍을 보다 좋은 품질로 서비스하기 위해 802.11e를 사용한 Hop Based Priority 테크닉을 제안한다. HBP 테크닉은 패킷이 경로를 따라 이동할때 한홉이 지날때마다 우선순위를 증가시킨다. 그럼으로써 먼저 보낸 패킷과 나중에 보낸 패킷간의 경쟁을 최소화 시키고 먼저 보낸 패킷이 채널을 잡을수 있도록 한다. 이를 모델링을 통해 검증하여 약 43%의 성능 개선 효과가 있음을 확인하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.500-503
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• 2008

소프트웨어 정밀 검사는 품질 보증 활동 중 결함 제거율이 가장 높은 것으로 알려져 있지만, 비용과 시간이 가장 많이 소요되는 활동이다. 모든 프로젝트는 한정된 비용과 일정 제약을 가지고 있으므로 정형화된 프로세스로 이루어진 소프트웨어 정밀 검사를 프로젝트에서 산출된 모든 컴포넌트에 대하여 수행하는 것은 현실적으로 어렵다. 따라서 소프트웨어 정밀 검사의 효과를 극대화 하기 위한 효율적인 접근 방법이 필요하며, 본 논문에서는 효율적인 소프트웨어 정밀 검사를 수행하기 위하여 요구사항 크기와 복잡도, 설계 복잡도, 코드 복잡도 평가에 기반한 컴포넌트 우선순위 선정 기법을 제안하고 평가한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38B no.5
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• pp.315-327
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• 2013

Wireless Body Area Network (WBAN) is a network around a human body within 3~5m which consists of medical or non-medical device. WBAN has to satisfy many kinds of demands such as low-power, a variety of data rate and a data priority. Especially, it is hard for the nodes for monitoring vital signs to replace battery. Thus energy and channel efficiency is important because the battery power is limited. In this thesis, a novel algorithm for reducing the energy consumption is proposed. The proposed algorithm adjusts transmission period according to traffic. by means of determining transmission period by amount of data, the node can reduce energy consumption. Energy detection is performed in order to guarantee data priority before attempting to transmit. In case of failing to transmit, it is proposed that energy consumption is reduced through avoiding collision by changing priority. The comparison result shows that the proposed algorithm reduces power consumption and increasing maximum channel efficiency by avoiding collision.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.700-703
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• 2017

안전 필수 소프트웨어란, 소프트웨어의 결함으로 인해 사고가 일어났을 경우 사용자에게 치명적인 위해를 야기하는 소프트웨어를 의미한다. 안전 필수 소프트웨어는 다양한 산업에서 보편화 되고 있기 때문에 안전성이 확보된 소프트웨어를 사용자에게 제공해야하며, 잠재적인 결함이 사고로 이어질 수 있기에 안전 요소들에 대한 충분한 분석이 필요하다. 요구사항으로부터 위험 요소를 분석할 때에는 결함의 결과만을 보고 위험 등급을 부여하는 한계가 있다. 결함의 결과가 비록 같더라도 각기 다른 원인에 의해서 각기 다른 위험 수준을 갖기 때문이다. 본 논문에서는 각각의 기능들에 대해 안전성을 부여하고 우선순위를 선정하여 위험도가 높은 기능들에 대해서 우선적으로 분석할 수 있는 기법에 대해서 제안한다.

• Journal of the Korea Society of Computer and Information
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• v.18 no.8
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• pp.9-15
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• 2013

As the resources of cloud computing are essentially heterogeneous and jobs have various characteristics, resource allocation to jobs is one of important problems. We define this issue as a multi-criteria decision-making problem. This paper proposes a priority-based job scheduling algorithm based on analytic hierarchy process (AHP). On the first step, jobs are classified based on their preferences. On the second step, response time, system utilization, and load becomes decision criteria based on the AHP algorithm. Jobs are allocated to adequate resources through their priorities that are calculated by the AHP algorithm. Through analysis and experiment of the proposed algorithm, we are to confirm that the scheme can schedule jobs as well as utilize its resource efficiently.