• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.5A
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• pp.752-762
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• 2001

소프트웨어의 유지보수 과정에서 효율적인 복잡성 척도와 테스트 경로의 생성은 중요한 문제이다. 대부분의 경우 테스트 경로의 생성과 복잡성 척도의 측정은 독립적인 기법이 필요하다. 본 논문에서는 테스트 경로의 생성과 복잡성 척도를 통합적으로 생성하고 있다. 제안한 기법은 PUT(Program Under Test)를 확장한 페트리네트 그래프(EPG)를 이용하여 모델링하고 이것의 통합적인 분석을 통하여 테스트 경로를 생성하며, 이 과정에서 생성된 실행경로의 제어구조별 평균 발생 빈도수를 이용하여 복잡성 척도 EV(G)를 구하였다. EV(G)는 실제 프로그램의 실행경로에 기반을 두었기 때문에 프로그램의 제어구조별 차이점 외에도 프로그램의 동작 특성을 복잡도에 잘 반영할 수 있다. 본 논문에서 제안한 통합 기법에 의한 테스트 경로 생성 기법과 복잡성 척도를 소프트웨어의 유지보수에 활용한다면 노력과 비용의 절감 및 소프트웨어의 질적 향상을 가져올 것이다.

• Annual Conference of KIPS
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• 2003.11c
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• pp.1371-1374
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• 2003

관계형 DBMS 질의 최적화기는 기본적으로 통계정보(statistics), 선택도(selectivity), 카디널리티(cardinality), 비용(cost) 순으로 특정 실행 계획(Execution Plan)의 수행비용을 예측한다. 질의 최적화기가 최적의 실행 계획을 선택하는데 있어서 정확한 통계정보 유지와 올바른 선택도 그리고 카디널리티 예측이 무엇 보다 중요하다. 이 논문에서는 관계형 DBMS의 질의 최적화기가 비용을 계산하는 과정에서 발생할 수 있는 오류의 종류와 원인을 밝히고 각각의 오류에 대한 해결 방안을 진단 도구를 통하여 제시하도록 하겠다. 질의 최적화기의 오류로 인해 발생하는 잘못된 선택도와 카디널리티 예측을 인지하고 사용자에게 적절한 해결책을 제시한 후 실행 계획이 어떻게 바뀌었는지, 성능이 얼마나 향상되었는지를 확인하기 위해 진단 도구를 개발하고 그 결과를 분석하였다. 실험을 통해 본 논문에서 제시하는 질의 최적화기의 오류로 인한 문제를 가시적으로 확인할 수 있었으며, 부정확한 통계정보 유지와 잘못된 선택도 예측으로 인해 발생하는 문제가 어느 정도 해결된 것을 확인할 수 있었다.

• Journal of Korea Multimedia Society
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• v.14 no.7
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• pp.940-948
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• 2011

In this paper, we design and implement a task scheduler that considers real-time and fault tolerance in embedded system with a single processor. We propose a method how it can meet the deadlines of periodic tasks using RMS and complete the execution of aperiodic tasks by calculating surplus times from a periodic task set. And we describe a method how to recover of a transient fault task by managing backup time. We propose an important level of periodic tasks that can control the response time of periodic and aperiodic tasks. Finally, we analyse and evaluate the proposed methods by simulation.

• 한국IT서비스학회:학술대회논문집
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• 2005.05a
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• pp.562-571
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• 2005

본 연구에서는 정보시스템 구축 ${\cdot}$ 운영에 필요한 하드웨어 도입시 용량산정의 객관성을 확보하고 아울러 정보시스템 업무유형 및 규모를 감안한 용량산정 기준을 설정하기 위하여 CPU를 중심으로 메모리와 하드디스크의 용량을 적절히 산출할 수 있는 용량산정식과 용량산정식에 포함될 항목 및 각 항목별 중요도(입력값의 범위)를 실증적으로 도출하였다. 실증분석은 기존연구에서 설정된 용량산정 프레임워크와 하드웨어 용량산정 지침을 바탕으로 설문조사 및 전문가 집단토의 방식을 병행하여 수행하였다. 실증분석 및 전문가집단의 토의결과 CPU(WEB/WAS 및 OLTP), 메모리, 디스크에 대한 용량산정식의 타당도 및 각 용량산정식에 포함될 항목별 입력값의 범위 와 기타 부가적으로 정보시스템의 유형(개발목적과 구축영역)에 따른 항목별 중요도가 각각 도출되었다. 본 연구의 주요의의로는 공공기관의 실무 전문가들을 대상으로 실행적 측면에서 용량산정식의 타당도를 확인하였으며, 항목별 입력값의 경우에도 정형화된 설문서를 통하여 기존 연구들에서 설정된 정보시스템 용량산정식의 객관성을 확보하였다는 점이다. 또한, 주로 공급업체 전문가의 자의적 판단에 따라 설정된 입력값의 범위 등을 공공기관의 현업전문가를 통하여 실증적으로 검증하고 확인하였다는 점이다.

• Korean Journal of Environment and Ecology
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• v.17 no.3
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• pp.276-284
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• 2003

The purpose of this study is to develop effective destination management strategies for three typical tourist destinations in Kangwon province based on the importance-performance analysis. The results show that overall performance levels of 21 management attributes in three destinations is relatively low, compared to the importance levels of the attributes. 6 attributes place in Concentrate Here, 4 attributes in Possible Overkill, 6 attributes in Keep Up Good Work, and 5 attributes in Low Priority. There is no significant difference in the importance level among three destinations, while performance levels are the lowest at Naksan & Kyungpo beaches, and highest at Ganhyun area. Findings of the survey expect to be used as fundamentals in management policy making process for each destinations.

• The Journal of Society for e-Business Studies
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• v.25 no.4
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• pp.15-32
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• 2020

Increasing uncertainties in the technological innovation environment and increasing technology competition also present new challenges in terms of industrial technology security. Therefore, the purpose of this study was to identify the direction of policy change necessary for the improvement of related policies in the future by examining the importance and implementation of the government's industrial technology security support policies for small and medium-sized enterprises engaged in industrial technology innovation activities. As a result of the analysis, first of all, small and medium-sized enterprises that responded to the government's industrial technology security support policy were perceived to be less performing than the importance of the program. These results can be said to mean that selective budget expansion for related policy programs may be necessary, along with efforts to improve the quality of each program. Second, an analysis of the differences in group recognition between new technology certification firms and industrial technology verification(certification) companies showed that significant differences exist between groups for the program. These results suggest that more effective operation of the relevant policies may require policy enforcement in consideration of the level of security and will of each company in industrial technology, as much as the quantitative characteristics of the entity. This study is meaningful in providing the necessary policy directional basic information for the design and execution of more specific and effective industrial technology security policies by presenting empirical research results that domestic small and medium-sized enterprises are aware of about the government's industrial technology security policies.

• Culinary science and hospitality research
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• v.15 no.2
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• pp.173-187
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• 2009

The purpose of this study is to provide useful information for establishing efficient marketing direction by investigating the performance(satisfaction) and importance of the display of dining space for hotel banquets. The importance and satisfaction scores of the display of dining space were measured on the five-point Likert scale. The results were summarized as follows. 'Taste of food(4.53 point)', 'freshness of food materials(4.50 point)', and 'indoor cleanliness(4.38 point)' were considered highly important while 'carpet shape of the floor(3.68 point)' and 'art objects(3.69 point)' were scored low. As for the factors of satisfaction, 'freshness of food materials(3.86 point)', 'taste of food(3.85 point)', 'indoor cleanliness(3.74 point)', and 'overall cleanliness of tables(3.73 point)' were considered highly satisfactory while 'art objects(3.42 point)', 'item decoration(3.44 point)', 'furniture and accessory decoration(3.45 point)' were scored low. As a result of analyzing difference between importance and performance of the display of dining space, importance(4.02 point) was much higher than performance(3.60 point). For the IPA result, customers made much account of 'taste of food', 'freshness of food materials', 'indoor cleanliness', 'overall cleanliness of tables', 'cleanliness state of a banquet hall' and so on, so they were regarded as the items to be continuously cared for. Also, intensive care was needed in such factors as 'indoor temperature', 'food vessels', 'soundproofing' and 'colors of a banquet hall' due to low customer satisfaction.

• Journal of the Society of Disaster Information
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• v.8 no.3
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• pp.310-318
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• 2012

Actual condition by items based on the level of execution of Construction Company certified by Construction Safety and Health Management Systems (KOSHA 18001) was investigated, analyzed and evaluated reflecting various opinions fincluding safety experts, top management, audit experts, and construction engineers. Currently, the maintenance is being managed through internal audit after the safety and health management system has been certified, but it is difficult to identify the degree of continuous improvement. In order to present the standards to see the level of quantified system, this study was conducted. The purpose of this study is to present the system maturity evaluation tool to be used to reduce occupational accidents through proper establishment and continuous improvement of national health and safety management system. Results of this study are summarized through identification of current condition of implementation of KOSHA 18001 system, development of maturity measurement tool and verification as follows: First, priority of implementation for activities of headquarters and on-site was determined by importance of activities such as the risk assessment, safety and health accident prevention activities, performance assessment and monitoring, resource management and support, and management review and improvement in order. In addition, the expert group presented that association with continuous improvement activities could establish the system by presenting strengths, weaknesses and improvement subjects of system.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.15 no.2
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• pp.183-192
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• 2020

This study conducted an exploratory study to derive the success factors of entrepreneurial marketing for startups. Through Delphi analysis, we derived the items of proactive orientation, risk management, innovation, opportunity driven, resource leveraging, customer intensity, value creation, price setting, marketing communication, channel management, product development, sales and marketing information management. The importance and execution of success factors were measured through IPA analysis. The first quadrant(keep up the good work) has proactive orientation, risk management, resource leveraging, customer intensity. The second quadrant(concentrate here) has innovation. The third quadrant(low priority) has channel management, sales, marketing information management. The fourth quadrant(possible overkill) has prices setting, product development. These results showed that the success factors of startup's entrepreneurial marketing were proactive orientation, risk management, innovation, opportunity driven, resource leveraging, customer intensity and value creation.

• Journal of Convergence for Information Technology
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• v.8 no.2
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• pp.163-169
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• 2018

The purpose of this study is to analyze educational needs and perception of job performance in the community service investment program service providers. Data were collected from 619 service providers and was analyzed by t-test. In the case of the director, there was a significant difference in 10 professional qualification areas, 2 business management areas, 4 customer management areas, and 4 service development and marketing areas. In the case of the practitioners, there was a significant difference in 3 professional qualification areas, 2 business management areas, 2 customer management areas, and 5 service development and marketing areas. In the case of the therapist, there was a significant difference in all 35 areas. These findings offer theoretical background and practical implications for the education direction of community service investment program service providers.