• Journal of the Korean Society of Radiology
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• v.16 no.5
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• pp.559-565
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• 2022

In this study, we intend to develop a granulation tissue formation model. As a pilot experiment, a contrast agent was injected into the pylorus in 3 rats, the normal pylorus lumen size was confirmed, and a stent was placed. Stent migration was confirmed in to the duodenum within 1 week. In this experiment, stent was sutured and fixed to induce granulation tissue formation after gastrostomy under a fluoroscopic guidance. Twenty rats were divided into Healthy Group / Gastrostomy Group. After anesthesia of the Gastrostomy Group, an abdominal incision was performed, and gastrostomy was performed under a fluoroscopic guidance, and a stent was placed into the pylorus. In order to prevent stent migration due to peristalsis, suture between the pylorus and the proximal end of the stent was performed. Postoperative behavior and weight changes were monitored daily. Four weeks after surgery, gastrointestinal fluoroscopy imaging was performed and rats were sacrifices. To evaluate the degree of granulation formation, the stent was sectioned transversely. Gastrostomy group was statistically significantly higher than Healthy Group in granulation area ratio (all p<.001). In conclusion, it is considered that the level of tissue overgrowth formation for preclinical evaluation of the pylorus stricture model through gastrostomy is appropriate as a research evaluation tool.

• Journal of Convergence Society for SMB
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• v.6 no.1
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• pp.1-5
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• 2016

In this paper, I try to develop a model the effects on organizational behavior and job performance of members of the organization's Information Management System. I conduct a survey on organizational performance received IMS and analyze the correlation between the variables. By the results, as the level of awareness of IMS determined the level of organization's performance. I proposed an alternative for improving performance and management improvements. How a positive influence on organizational performance analysis and efficient operating IMS.

• Proceedings of the Korean System Dynamics Society
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• 2003.02a
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• pp.65-71
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• 2003

장점 각종 Dynamic 특성을 모델화, Recovery action등 Hardware뿐만 아니라 다양한 민감도 분석이 가능, 절차서 개선, 조직 특성 등 모듈 개념을 활용할 시에 모델화 시간이 절약 기존 방법에 비해 1/2-1/10 정도의 노력, 다른 전략 모델과의 연계가 가능, 단점 정성적 Insight를 얻기 어려움, 평가 시간이 매우 김.(중략)

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.17 no.7 s.110
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• pp.684-693
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• 2006

In this paper, the SA (Specific Absorption) distribution in a human head, exposed to wideband pulse EMF, has been analyzed by taking into account the dispersion characteristics of biological tissues. The dispersive properties of biological tissues are characterized by the 4th Cole-Cole model. Currently, there is no dispersive FDTD algorithm to implement the 4th Cole-Cole model accurately. Thus, in this paper the FDTD methods with the dispersive algorithm for the 1st-order Cole-Cole model and the 3rd-order Debye model were used for SA analysis. The validity of each model has been investigated first, and then the effects of dispersion on SA distribution have been studied.

• Journal of Convergence Society for SMB
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• v.1 no.1
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• pp.45-53
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• 2011

There are always many kinds of risks in software development such as frequent changes of requirements. Especially those risks related to the software characteristic of non-visibility can be threat to the project success. That lead us to the need of process implementation to reduce and minimize those risks. Although, most of the organization recognizes the importance of risk management, actual implementation requires professional knowledge in this area. CMMI, the de facto standard in process reference model, also emphasizes on risk management process area but only provides goals and practices to be implemented, not detail procedure and methods. In this paper, we developed Risk management implementation model based on IDEAL, the process improvement model based on CMMI. The proposed model will help the organizations to implement risk management process which is proper to their situation in the factor of organization size and project characteristics.

• The Journal of the Korea Contents Association
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• v.19 no.1
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• pp.484-495
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• 2019

This study attempted to investigate the effects of self-leadership on organizational citizenship behavior and turnover intention among beauty salon employees and analyze the moderating effects of job satisfaction. For this purpose, data were collected for 330 people working in beauty salons and analyzed using SPSS v. 21.0. According to multiple regression analysis, self-leadership revealed a statistically significant positive effect on the OCB and urnover intention Therefore, it was shown that self-leadership is a critical factor. To determine if self-leadership having an influence on the OCB and turnover intention is moderated by job satisfaction, variables were applied to the following models, and hierarchical regression was performed: self-leadershipto model I, job satisfaction to model II, self-leadership and job satisfaction to model III. The results found a statistically significant positive influence in all three models. Therefore, this shows that job satisfaction has a moderating effect on self-leadership, OCB and turnover intention. Self-development education as well as technical training should be strengthened to enhance self-leadership, which leads beauty salon employees' thoughts and behavior in the right direction.

• Journal of Internet Computing and Services
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• v.14 no.1
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• pp.23-30
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• 2013

Test effort estimated so far is as a by-product of the development effort estimation activity which is based on the FP, UCP, COCOMO model, or calculated data from the project knowledge base which is containing test effort information for the test phase on software development life cycle. In this paper, test effort estimation model and calculating procedures are suggested, which is independent from software development effort estimation model. Generally test efforts is depends on the number and the complexity of test cases, and also maturity of test organization that performs test activities, such as integration test, system test, acceptance test and so on. The estimated results with the suggested test effort estimation model has deviation of 4.7% compare to the corresponding test efforts generated by the development effort estimationprocedures. The suggesting model will be accurate more and more with refinements of coefficients which reflect the technical and environmental maturity level of test organization, and also including the software complexity level of projects.

• Journal of the Korean Society of Radiology
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• v.8 no.7
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• pp.389-395
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• 2014

The research was carried out to develop a animal model of malignant brain tumor for the researches in glioblastoma multiform (GBM) diagnosis and therapy. C6 cells were transplanted into the right striatum of SD rat using stereotactic instrument for the development. The developed animal model was verified by MRI and H&E stain assay of anatomicohistological examination. The MRI observations showed that the tumor developed at the injection site at the 7 days after glioblastoma inoculation. At 14 days post inoculation, the tumor grew to a large volume occupying almost a half of the right cerebral hemisphere. It was confirmed that the expression of excessive mitosis and pleomorphism in anatomicohistological examination. The developed animal model must be necessary and useful tool for the in vivo level research in the development of the new modality for the diagnosis and therapy of brain cancer.

• Proceedings of the Korea Database Society Conference
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• 1999.10a
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• pp.183-189
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• 1999

오늘의 기업에게 정보기술이란 필수요소이다. 정보기술을 효과적으로 활용하기 위해서는 IT 인프라가 체계적으로 구축되어 있어야 한다. 해당 조직에 적합한 정보기술 기반구조를 설계하고 이의 도입을 위한 구체적인 계획을 수립하기 위해서는 체계적이고 효과적인 정보계획 수립(Information System Planning: ISP)이 필요하다. 그러나 정보계획수립 프로젝트의 상당수가 실패로 그치고 있다. 특히 정보기술의 지속적인 변화 때문에 수립한 정보기술 기반구조 계획안이 실제 구현되지 못하고 계획으로만 남는 경향이 있다. 이러한 ISP의 어려움을 해결하기 위해서는 정보기술 참조모델(reference model)을 적극적으로 활용할 필요가 있다. 즉, 조직의 정보시스템에 공통적으로 적용할 수 있는 IT 인프라나 표준 아키텍쳐를 바탕으로 정보계획수립을 수행해 나가는 방식이 필요하다. 이와 같은 참조모델 기반의 정보계획 수립은 새로운 아키텍쳐를 추출하고 표준화를 이룸으로써 프로젝트의 생산성을 높일 수 있다는 장점을 가지고 있다. 기존의 ISP 연구는 ISP의 필요성, 과정, 성공요인 등에 국한되어 왔으며, 방법론에 대한 연구는 미비한 편이다. 최근들어 ISP의 체계적인 분류나 참조모델 기반 계획수립의 필요성이 제기되었다. 그러나 아직까지 이와같은 접근에서 참조 모델을 어떻게 구축하고 활용해 나갈 것인가에 대한 연구는 부족한 실정이다. 따라서 본 논문에서는 참조모델을 구축하기 위한 다양한 접근방법과 각각의 특징을 제시한다. 나아가서 해당 조직의 상황이나 요구수준에 따라 적합한 접근방법을 선택할 수 있게 해주는 방안을 제시한다.타냈으며, 평가결과에 대해 여러 가지 방법으로 분석하였다. 첫째, 동종제품간 평가분석을 통하여 각각의 제품을 비교하였으며, 둘째 소프트웨어 종류별 평가로 제품을 응용소프트웨어, 응용개발도구, 시스템 소프트웨어로 분류하여 평균값으로 비교하였다. 셋째, 국내외 제품별 평가분석으로 전체 제품을 국내제품과 국외제품으로 분류하여 비교하였으며, 마지막으로 총괄분석을 통해 가중치를 적용하여 전 제품의 점수를 비교하였다. 여기에서는 각 제품의 평균점수에 대한 차이를 95%의 유의수준으로 T-Test를 실시하였다.uted to the society, and what the socioeconomic impacts are resulted from the program. It would be useful for the means of (ⅰ) fulfillment of public accountability to legitimate the program and to reveal the expenditure of pubic fund, and (ⅱ) managemental and strategical learning to give information necessary to improve the making. program and policy decision making, The objectives of the study are to develop the methodology of modeling the socioeconomic evaluation, and build up the practical socioeconomic evaluation mod

• 한국디지털정책학회:학술대회논문집
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• 2007.06a
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• pp.315-322
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• 2007

유비쿼터스 환경은 조직의 구조와 개인의 행위를 변화시킬 뿐만 아니라 기업의 경쟁 패러다임 자체를 변화시킬 것으로 전망하고 있다. 또한 유비쿼터스 컴퓨팅의 기술이 경영경제, 행정, 교육, 문화, 의료등 사회 전반에 걸쳐 도입되고 있으며, 이에 따른 비즈니스 모델에 대한 중요성이 증대되고 있다. 기술에 관련된 RFID, USN, 표준화, 보안등에 대한 연구가 활발히 이루어지고 있으나, 비즈니스 모델에 관련된 연구는 미흡한 실정이다. 본 연구에서는 유비쿼터스 컴퓨팅에 대해 알아보고 비즈니스 모델 사례 검토를 통해 유비쿼터스 컴퓨팅 시대의 비즈니스 모델과 발전 방향 및 혁신 전략을 제시하고자 한다.