• 한국IT서비스학회지
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• 제12권2호
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• pp.361-371
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• 2013

Public domain defect data sets, such as NASA data sets which are available from the NASA MDP and PROMISE repositories, make it possible to compare the results of different defect prediction models by using the same data sets. This means that repeatable and general prediction models can be built. However, some recent studies have raised questions about the quality of two versions of NASA data set, and made new cleaned data sets by applying their data cleaning processes. We find that there are two ways in the NASA MDP versions to determine the defectiveness of a module, 0 or 1, and the two results are different in some cases. This serious problem, to our knowledge, has not been addressed in previous studies. To handle this ambiguity problem, we define two kinds of module defectiveness and two conditions that can be used to determine the ambiguous cases. We meticulously analyze 5 projects among the 13 NASA projects by using our ambiguity analysis method. The results show that JM1 and PC4 are the best projects with few ambiguous cases.

• 한국인터넷방송통신학회논문지
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• 제23권5호
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• pp.159-167
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• 2023

디지털 기술의 융·복합화와 급변하는 디지털 산업의 특성으로 인해, 그간 진행해온 기술 분야별 육성사업은 그 사업의 경계가 모호해져 사업효과가 분산되고, 기술발전을 수용하는 유연한 산업육성에 한계가 도달한 것으로 보인다. 따라서 향후 미래의 디지털콘텐츠 산업의 변화 방향에 효과적으로 대응하기 위한 디지털콘텐츠 산업육성사업 구조개편 및 관리체계 개선 방안을 제시하여 디지털콘텐츠 육성사업의 정책을 지원하는 것을 목표로 한다. 정부지원 사업의 구조분석과 진단을 통하여 기존 19개 내역사업과 49개 내내역사업을 7개 내역사업과 17개 내내역사업으로 개편하는 것을 제안하였다. 사업관리 체계 개선 방안으로 사업수행기관이 과다하고 세부사업지원 관리 총괄기관이 부재하여 사업간 유기적 연계 및 시장창출을 위한 규모 있는 사업 추진에 한계가 있으므로 이를 개선하기 위해 사업 관리기능을 총괄하는 총괄기관을 선정하고, 사업관리를 총괄기관으로 일원화하여 사업을 효율적으로 관리하게 할 필요가 있음을 제시하였다.

• 경영정보학연구
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• 제8권1호
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• pp.265-285
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• 2006

본 연구는 IT프로젝트 사전타당성 평가항목을 도출하고, 각 평가항목의 가중치를 AHP 기법에 의하여 산출하였으며, 3개 IT프로젝트 유형에 따른 평가항목별 가중치 차이를 통계적으로 검증하였다. 국내 민간기업 및 공공조직에서 제안된 79개 IT프로젝트에 대한 AHP 조사에서 7개 평가항목의 가중치는 재무적 효과 25.14%, 전략적 가치 22.34%, 직접비용 14.44%, 리스크 12.05%, 기술적 필요성 11.50%, 정치적 고려 8.26%, 간접비용 6.41%로 나타났다. 예상대로 재무적 효과, 전략적 가치, 직접비용의 가중치가 높게 나타난 반면, 최근의 TCO 모델이나 이론적 연구에서 중시되고 있는 간접비용이 실무현장에서는 그다지 중요하게 고려되지 않는 것으로 나타났다. 특히 대부분 신규 IT투자에서 실질적으로 가장 민감하게 영향을 미치고 있다고 간주되는 CEO 관심, 현업부서장의 추진의지 등과 같은 정치적 고려항목이 낮게 나타난 것은 의외의 현상이며, 그 원인에 대한 체계적 분석을 향후 연구과제로 제안한다. 그리고 ANOVA 분석 결과 거래처리형, 정보제공형, 인프라형 3개 프로젝트 유형별로 평가항목 가중치가 다른 것으로 분석되었다.

• 한국IT서비스학회지
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• 제7권1호
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• pp.103-116
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• 2008

Efficiency and objectiveness are the most critical issues in the evaluation of software projects. It is beneficial not only to software companies participated in bids, but to administrators of projects. This study attempts to find an improvement in the evaluation process by connecting the historical data of bidding companies in the software company report system with the governmental procurement system. The proposed means will eliminate unnecessary and repetitive submission step of bidding companies and provide the administrator with objective evaluation process. Also, this paper proposes an automated process for quantifying the business experience of bidding companies.

• 산업경영시스템학회지
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• 제39권4호
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• pp.72-80
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• 2016

The market size of plant projects in overseas is so large that domestic EPC project contractors are actively seeking the overseas projects and then trying to meet completion plans since successful fulfillment of these projects can provide great opportunities for them to expand into new foreign markets. International EPC projects involve all of the uncertainties common to domestic projects as well as uncertainties specific to foreign projects including marine transportation, customs, regulations, nationality, culture and so on. When overseas project gets off-schedule, the resulting uncertainty may trigger unexpected exceptions and then critical effects to the project performance. It usually require much more time and costs to encounter these exceptions in foreign sites compared to domestic project sites. Therefore, an exception handling approach is required to manage exceptions effectively for successful project progress in foreign project sites. In this research, we proposed a methodology for prediction and evaluation of exceptions caused by risks in international EPC projects based on sensitivity analysis and Bayesian Networks. First, we identified project schedule risks and related exceptions, which may meet during the fulfillment of foreign EPC projects that is performed in a sequence of engineering, procurement, preparatory manufacture, foreign shipping, construction, inspection and modification activities, and affect project performance, using literature review and expert interviews. The impact of exceptions to the schedule delay were also identified. Second, we proposed a methodology to predict the occurrence of exceptions caused by project risks and evaluate them. Using sensitivity analysis, we can identify activities that critically affect schedule delay and need to focus by priority. Then, we use Bayesian Networks to predict and evaluate exceptions. Third, we applied the proposed methodology to an international EPC project example to validate the proposed approach. Finally, we concluded the research with the further research topics. We expect that the proposed approach can be extended to apply in exception management in project management.

• 한국실내디자인학회논문집
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• 제25권5호
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• pp.16-30
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• 2016

There is an increasing interest in and efforts for safe residential environment from crimes nationwide. Many cities are making efforts to create safe residential environment by enacting ordinances and guidances on safe design for preventing crimes and implementing demonstration projects. In line with the trends of the times toward 'improvement of living conditions' through urban regeneration, the importance of the Crime Prevention Through Environmental Design(CPTED) has recently emerged in the field of residential housing regeneration. Indeed, the CPTED is included as essential factor in the recent deteriorated residential area regeneration related projects. In this respect, the purpose of this study is to provide the basic data on the methodology of CPTED to be applied to the regeneration of deteriorated residential area in the future. To this end, this study selected three representative CPTED projects in Busan - 'Deokpo-dong Hope and Stepping Stone Village,' 'Chilsan-dong CPTED Happiness Village' and 'Sujeong-dong Crime Prevention and Safe Village' as objects of this study and then investigated and analyzed project contents, application of CPTED strategy, subjects who are implementing projects, and the time when they implement projects as the framework of my analysis. The findings from this study are as follows: First, the projects that were largely based on hardware should be improved by including software in the future. Second, the current Step 2 should expand into Step 3 Maintenance in applying CPTED strategy. Third, it is necessary to encourage exchange and cooperation between unit projects and subjects who are operating related projects.

• 한국건설관리학회논문집
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• 제16권2호
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• pp.86-96
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• 2015

2000년대 PF(Project Financing)의 적극 활용을 통해 부동산개발 및 PF 시장이 급성장하였지만, 이후 세계금융위기의 여파로 부동산 경기 침체로 인해 상당수의 개발사업이 정상적으로 추진되지 못하게 되었다. 이러한 현상은 철저한 사업성 분석 없이 무리하게 사업을 추진한 것이 근본적인 원인으로 판단된다. 이에 본 연구에서는 부동산개발사업의 무분별한 추진을 억제하고 객관적인 평가가 가능하도록 기존 부동산개발사업 평가체계의 문제점을 짚어보고 이를 보완할 수 있는 부동산개발사업의 평가항목 및 평가기준 등을 평가수요 및 사업유형 등 사업의 성격에 맞게 적용할 수 있는 전반적인 평가체계를 제안하였다. 본 연구에서 제안한 부동산 평가체계 및 운영방안을 통해 부동산 평가체계를 제도화하여 표준화함으로써, 보다 일관성 있는 평가가 가능할 것으로 기대되며, 아울러 평가자료의 통일적 축적이 가능하게 될 것으로 기대된다.

• 한국건설관리학회논문집
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• 제10권3호
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• pp.139-147
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• 2009

Accurate construction cost estimation in the initial stage of building project plays a key role for project success and for mitigation of disputes. Total construction cost(TCC) estimation of apartment projects in Vietnam has become more important because those projects increasingly rise in quantity with the urbanization and population growth. This paper presents the application of artificial neural networks(ANNs) in estimating TCC of apartment projects. Ninety-one questionnaires were collected to identify input variables. Fourteen data sets of completed apartment projects were obtained and processed for training and generalizing the neural network(NN). MATLAB software was used to train the NN. A program was constructed using Visual C++ in order to apply the neural network to realistic projects. The results suggest that this model is reasonable in predicting TCCs for apartment projects and reinforce the reliability of using neural networks to cost models. Although the proposed model is not validated in a rigorous way, the ANN-based model may be useful for both practitioners and researchers. It facilitates systematic predictions in early phases of construction projects. Practitioners are more proactive in estimating construction costs and making consistent decisions in initial phases of apartment projects. Researchers should benefit from exploring insights into its implementation in the real world. The findings are useful not only to researchers and practitioners in the Vietnam Construction Industry(VCI) but also to participants in other developing countries in South East Asia. Since Korea has emerged as the first largest foreign investor in Vietnam, the results of this study may be also useful to participants in Korea.

• 토지주택연구
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• 제4권4호
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• pp.333-348
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• 2013

최근 정비사업은 부동산 경기침체에 따른 사업성 악화, 정비구역의 과다 지정, 사업추진 과정상 이해관계자 간의 갈등 및 비리 발생 등 여러 가지 원인에 의해 수도권 일부지역을 제외한 전국 대부분의 지역에서 사업 추진이 매우 부진한 실정이다. 이에 따라 전국의 각 지역별 정비사업 추진실태에 대한 면밀한 조사 분석과 함께 사업추진 단계별 문제점 분석을 통하여 정비사업 정상화를 위한 제도적 개선방안의 마련이 필요하다. 본 연구에서는 전국 개별 정비구역에 대한 구체적 현황자료 및 언론보도자료를 바탕으로 전국적 정비사업 추진실태에 대해서 지역별 사업별로 비교 분석하였다. 이러한 분석결과를 토대로 다음과 같이 정비사업에 대한 개선방안을 제시하였다. 첫째, 보다 장기적 관점에서 정비기본계획의 수립 및 정비예정구역의 지정이 필요하다. 둘째, 대규모 정비사업보다는 지역의 다양한 여건에 부합할 수 있는 소규모 단위의 점진적 정비사업으로 전환되어야 한다. 셋째, 지방의 여건을 고려한 중앙정부의 지원이 이루어져야 한다. 또한, 민간 중심의 사업방식에서 벗어나 민간과 공공의 파트너십 형성과 통하여 정비사업의 투명성 제고, 사업여건 개선, 공공의 역할 확대를 통한 새로운 방향의 협력적 정비사업으로의 전환이 필요하다.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.186-195
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• 2007

Key Performance Indicators (KPIs) are the criteria of measuring project performance in order to attain construction excellence. Previous researchers have examined the abstract concept of success for general new construction and identified its relationship with the factors of success. In fact, most buildings exist to satisfy the needs of people. With the passing of time and change in technology, buildings have to be maintained and renovated in order to continue functioning properly for the benefits of users. Therefore, criteria and factors of success have increasingly attracted the attention of both researchers and practitioners, especially in cities where buildings become ageing. However, the topic of project success for maintenance projects is less discussed in previous research, and project participants, including maintenance surveyors should be able to identify the success measurement and its associated factors for performance improvement. This study fills the research gap by investigating the criteria and factors of success for maintenance projects. It first provides a summary of the literature review on the criteria and factors of success for construction projects. An empirical study has also been carried out with ten practitioners in Hong Kong to further identify the criteria and factors critical for the success of maintenance projects in practice. While most criteria and factors of success for new construction projects are also applicable to maintenance projects, participants in maintenance projects believe that effective communication is in particular important to provide quality service to the end-users.