• Journal of information and communication convergence engineering
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• 제19권4호
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• pp.228-233
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• 2021

In this study, we analyze the credit information (loan, delinquency information, etc.) of individual business owners to generate voluminous training data to establish a bankruptcy prediction model through a partial synthetic training technique. Furthermore, we evaluate the prediction performance of the newly generated data compared to the actual data. When using conditional tabular generative adversarial networks (CTGAN)-based training data generated by the experimental results (a logistic regression task), the recall is improved by 1.75 times compared to that obtained using the actual data. The probability that both the actual and generated data are sampled over an identical distribution is verified to be much higher than 80%. Providing artificial intelligence training data through data synthesis in the fields of credit rating and default risk prediction of individual businesses, which have not been relatively active in research, promotes further in-depth research efforts focused on utilizing such methods.

• 통상정보연구
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• 제11권1호
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• pp.239-264
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• 2009

As the competitive market environment and industry circumstances become more and more competitive on a daily basis, it is not easy to find an opportunity to initiate small business, or increase performances of Small and Medium Business. The research findings are as follows. First, entrepreneurship(innovation, progressive, social responsibility) has significant effects on the market orientation. Second, company competence(individual resource, technology resource) has significant effects on the market orientation. Third, market orientation has significant effects on the non-financial performance(Internal process performance, learning & growth performance, customer performance). Finally, non-financial performance(Internal process performance, learning & growth performance, customer performance) has significant effects on the financial performance.

• 한국산업정보학회논문지
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• 제23권4호
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• pp.55-67
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• 2018

본 연구의 목적은 ERP시스템의 품질요인이 시스템 사용만족도와 개인 및 조직성과에 어떠한 영향을 미치는가를 실증적으로 조사 및 분석하였다. 기존 선행연구들이 시스템의 품질요인에 초점을 맞추고 연구한 반면, 본 연구는 설문지를 사용하여 ERP시스템을 채택한 기업에 있어서 품질요인과 사용만족도 및 기업성과간의 상호관련성을 조사 연구하였다. 특히 기존의 연구들은 시스템품질과 사용만족도 또는 조직성과간의 관련성 연구가 주류를 이루고 있는데 본 연구에서는 정보시스템품질을 시스템품질, 정보품질, 서비스품질 3가지로 분류하고 사용만족도 및 성과도 개인성과와 조직성과로 구분하여 각각의 관련성을 연구하였다는 데 의의가 있다. 연구결과는 다음과 같다. 첫째, ERP시스템의 품질요인의 시스템품질, 정보품질, 서비스품질이 각각 사용자만족도에 유의한 수준에서 정(+)의 영향을 미치는 것으로 확인되었다. 둘째, 시스템 사용만족도가 개인성과와 조직성과에 각각 유의한 수준에서 정(+)의 영향을 미치는 것으로 확인되었다. 또한, 수정지수를 이용한 수정모형에서 얻은 추가 가설인 ERP시스템의 서비스품질이 개인성과 및 조직성과에 각각 유의한 수준에서 정(+)의 영향을 미치는 것으로 확인되었다.

• Journal of the Korean Data and Information Science Society
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• 제21권6호
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• pp.1071-1079
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• 2010

10종경기 전 종목에 관한 효율적이고 포괄적인 동시훈련은 불가능하다는 Tidow (2000)의 지적처럼 힘, 민첩성, 속력, 지구력 및 개개인의 심리적 특성을 요구하는 10종경기에서 선수들이 가지고 있는 체력과 기술을 각 종목에 효율적으로 안배하여 활용할 수 있는 능력은 매우 중요하다. 본 연구에서는 1990년 이후 거행된 올림픽과 세계육상선수권대회에서의 10종경기 기록을 이용하여 세계적인 선수들은 경기운영을 어떻게 하는지 선도표, 대응분석, 정준상관분석 및 상관분석을 이용하여 살펴보았다. 그 결과 최상위권에 속하는 선수들은 스피드가 매우 뛰어나며 투척경기에도 강하나 지구력 경기에만 약점을 보였으며 경기력 패턴이 뚜렷하게 나타났다. 또한 상위권 선수들은 도약경기에 강세를 보이고 최하위권 선수들은 지구력 경기에 강점을 보였다.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.359-366
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• 2013

Although many research efforts have been conducted to address the effect of crew members' work skills (e.g., technical and planning skills) on work performance (e.g., work duration and quality) in construction projects, the relationship between skill and performance has generated a great deal of controversy in the field of management (Inkpen and Crossan 1995). This controversy can lead to under- or over-estimations of the overall project schedule, and can make it difficult for project managers to implement appropriate managerial policies for enhancing project performance. To address this issue, the following aspects need to be considered: (a) work performances are determined not only by individual-level work skill but also by the group-level work skill affected by work team members, each member's role, and any working behavior pattern; (b) work planning has significant effects on to what extent work skill enhances performance; and (c) different types of activities in construction require different types of work, skill, and team composition. This research, therefore, develops a system dynamics (SD) model to analyze the effects of both individual-and group-level (i.e., multi-level) skill on performances by utilizing the advantages of SD in capturing a feedback process and state changes, especially in human factors (e.g., attitude, ability, and behavior). The model incorporates: (a) a multi-level skill evolution and relevant behavior development mechanism within a work group; (b) the interaction among work planning, a crew's skill-learning, skill manifestation, and performances; and (c) the different work characteristics of each activity. This model can be utilized to implement appropriate work planning (e.g., work scope and work schedule) and crew management policies (e.g., work team composition and decision of each worker's role) with an awareness of crew's skill and work performance. Understanding the different characteristics of each activity can also support project managers in applying strategic work planning and crew management for a corresponding activity, which may enhance each activity's performance, as well as the overall project performance.

• Journal of Information Technology Applications and Management
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• 제20권3_spc호
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• pp.259-278
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• 2013

At the center of the repeating evolution of IT industry, there is mobile computing in the ubiquitous environment, and the increasing usage of smart phones contribute more to its growth. P corporation co-developed with Google and implemented smart work system called SWP for the purpose of 'communication and collaboration with co-workers' beyond the general goal of increasing productivity and comfort of employees. The primary objective of this study is to objectively analyze the influence of the effect factor from end user's perspective and user satisfaction on SWP usage, intention for continuous usage and individual performance. To accomplish this research purpose, this study established research models and hypothesis by collective review about information system success models, and tested the research hypotheses using the structural equation modeling technique by data collected from 320 SWP system users of P corporation. Variations for system satisfaction evaluation standard are 1)SW system usage 2) intention for continuous usage 3) individual performance, effect variations are 1) social factors 2) technical factors 3) combination of social and technical factors. Therefore, this study is about influence factors on success of SWP system and how the factors impact the outcome. The test results of this research model is summarized as follows. Firstly, system user's satisfaction had positive impact on all three; SWP system usage, intention for continuous usage and individual performance. Secondly, social factor 'SWP control system' and technical factor 'information quality' and 'system quality' had positive impact on SWP system user satisfaction, while social factor 'shared value' and technical factor 'service quality' did not have significant effect on user satisfaction. Shared value however, had interactive effect with 'information quality' and 'service quality'. This study is expected to contribute to spread of academic research on smart work system by suggesting a model that can show important factors for corporation while explaining the successful implementation of SWP and its continuous usage.

• 임상간호연구
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• 제24권1호
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• pp.1-9
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• 2018

Purpose: The study was to examine the effects of the individual education about chemotherapy for cancer patients as well as their family who are receiving the first chemotherapy on self-care knowledge, self-care performance, family support, and anxiety level. Methods: A non-equivalent control group was used in this interventional study. A total of 50 patients with cancer aged above 19 in the K university hospital, Seoul, Korea, participated in the study (Experimental group: n=25, Control group: n=25). The education about chemotherapy was offered one week after hospital discharge, which was followed by telephone counseling Data were analyzed by the SPSS/WIN 20.0 program using percentage, frequency, mean, standard deviation, $x^2$ test, and independent t-test. Results: The experimental group showed a significantly better self-care knowledge (t=4.094, p<.001), self-care performance (t=3.532, p=001), family support (t=2.170, p=.035), and anxiety control (t=4.780, p<.001) than the control group. Conclusion: The findings suggest that the individual education should be considered for cancer patients and their family in the clinical fields.

• 벤처창업연구
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• 제6권3호
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• pp.61-84
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• 2011

본 연구는 서번트 리더십과 성과 간의 다양한 연구에도 불구하고, 양자 간의 관계를 체계적으로 설명하기 위한 메커니즘에 대한 연구는 상대적으로 부족한 점에 착안하여 설계되었다. 따라서 서번트 리더십이 조직유효성에 미치는 효과가 부하의 내적 동기에 의해 설명되어질 수 있는지를 실증적으로 분석하는 것이 본 연구의 주된 목적이다. 이를 위해 이론연구에 기초한 가설설정과 함께 경험 자료를 통한 실증분석이 이루어졌다. 서비스 기업에 종사하는 근로자 214명의 설문자료를 통해 실증 분석한 결과, 상사의 경청행동이 부하의 내적 동기에 정(+)의 효과를 지니는 것으로 나타났다. 또한 부하의 내적 동기는 직무만족과 조직몰입에 긍정적인 영향을 미치는 것으로 밝혀졌다. 하지만, 상사의 공감행동과 봉사행동은 부하의 내적 동기에 유의한 영향력이 없는 것으로 검증되었다. 마지막으로 부하의 내적 동기의 매개효과를 분석한 결과, 서번트 리더십과 조직유효성 간의 관계에서 부하의 내적 동기가 부분 및 완전 매개 역할을 하는 것으로 나타났다. 이는 심리적 과정 및 메카니즘이 리더십연구에 중요함을 시사하고 있다. 연구결과에 대한 실무적 시사점과 한계점, 향후 연구방향에 대해 구체적으로 제시하였다.

• 산업공학
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• 제22권2호
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• pp.104-115
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• 2009

The objective of the study is to evaluate the effectiveness of Crew Resource Management (CRM) training program for operators in the Main Control Room (MCR) simulator of APR-1400 Nuclear Power Plant. The experiments were conducted for two different crews of operators performing six different emergency operating scenarios during four-week period. Each crew consisted of the five operators: senior reactor operator, safety technical advisor, reactor operator, turbine operator, and electric operator. All crews (Crew A and B) participated in the training program for the technical knowledge and skills which were required to operate the simulator of the MCR during the first week. To verify the effectiveness of the CRM training program; however, only Crew A was selected to attend the CRM training after the technical knowledge and skills training. The results of the experiments showed that the CRM training program improved the individual attitudes of Crew A significantly. Team skills of Crew A were found to be significantly better than those of Crew B. The CRM training did not have positive effects on enhancing the individual performance of Crew A; however, as compared to that of Crew B. Implication of these findings was discussed further in detail.

• 한국정보전자통신기술학회논문지
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• 제16권4호
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• pp.203-209
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• 2023

Harmony search(HS)는 새로운 하모니를 구성할 때 HM을 참조하는 경우 개별 하모니의 평가를 이용하지 않지만 PSO(particle swarm optimization)는 개별 입자의 평가와 모집단의 평가를 이용하여 해를 찾아간다. 그러나 본 연구에서는 HS와 PSO의 유사점을 찾아 PSO의 입자 개선 과정을 HS에 적용하여 알고리즘의 성능을 향상시키고자 하였다. PSO 알고리즘을 적용하기 위해서는 개별 입자의 local best와 떼(swam)의 global best가 필요하다. 본 연구에서는 HS가 harmony memory(HM)에서 가장 나쁜 하모니을 개선하는 과정을 PSO와 매우 유사한 과정으로 보았다. 이에 따라 HM의 가장 나쁜 하모니를 입자의 PSO의 local best로, 가장 좋은 하모니는 PSO의 global best 최고로 간주하였다. 이와 같이 PSO의 입자 개선과정을 HS 하모니 개선과정에 도입하여 HS의 성능을 향상시킬 수 있었다. 본 연구의 결과는 다양한 함수에 대한 최적화 예시를 통해 비교 확인하였다. 그 결과 정확성과 일관성에 있어 기존 HS보다 제안한 HS-PSO가 매우 우수함을 알 수 있었다.