• Korean Journal of Applied Biomechanics
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• v.12 no.2
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• pp.279-293
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• 2002

In the study the subjects who 10 university golfers act, and the kinetic factors were analyzed by the ground reaction system. the conclusion are as follows. 1) In the golf putting swing, the ground reaction factors of sagital plane in aspect are showen that the left and right foot sufficient difference, in the level of p <.05. 2) In the golf putting swing, the ground reaction factors of frontal plane in aspect is showen that the left foot has no significant difference in AD BS in the level of p < .05. In success, IP, FS. It can show significant difference. In addition, the right foot is shown the success, There is significant difference. 3) In the golf putting swing, the ground reaction factors of the vertical plane in aspect are shown that the left foot has no significant difference in BS, FS in the level p < .05. In success, AD, IP. It can show significant difference. In addition, the right foot is shown the success, There is significant difference. 4) In the golf putting swing, the ground reaction factors of torque in aspect are shown that the left foot had no significant difference in BS in the level p < .05. In success, AD, IP, FS. It can show significant difference. In addition, the right foot has no significant difference in IP in the level p < .05. AD, BS, FS. There is significant difference. The summarized conclusions are as follows. The first that the power of sagital plane needs the motion which can get the good power change in the stabilized pose. The second is that the small motion can make good putting in stabilized pose. The third is that the body weight move to the direction of the ball. The fourth is that the putting which looks perfect oscillation is good motion.

• Aerospace Industry
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• s.107
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• pp.24-25
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• 2010

최근 나로호 발사 실패와 천리안 발사 성공 등 국내 우주개발에 희비가 엇갈렸다. 특히 자력 발사로 관심을 모았던 나로호 발사가 실패하면서 온 국민은 우주개발에 대한 어려움을 다시 한번 실감했다. 이번호에서는 국내 위성 및 발사체 개발현황을 살펴본다.

• Proceedings of the KACD Conference
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• 2002.05a
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• pp.351-351
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• 2002

재료의 발달과 더불어 높은 임상 성공률을 보이는 복합레진 수복물의 예상 가능한 실패 양태를 분석하고 이를 방지하기 위한 요점들을 단계별로 요약하고자 한다.

• The Journal of Korean Academy of Prosthodontics
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• v.56 no.2
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• pp.95-104
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• 2018

Purpose: The purpose of this study is to analyze the factors affecting the longevity of failed prosthesis and the success rate of the prosthesis based on the data evaluated with the newly developed Korean Academy of Prosthodontics (KAP) criteria. Materials and methods: Evaluation was performed in the restored prosthesis for patients who visited the prosthodontics department of the 13 dental university hospitals and general hospitals. The status of the prosthesis was classified into four categories: Good, Fair, Bad, Worst. The success was recorded if only the category was classified in 'good'. The mean duration of failed prostheses and the success rate through Kaplan-Meier method were analyzed. Results: A total of 1,804 cases of prosthesis were evaluated: 810 cases of fixed dental prostheses (FDP), 519 cases of Removable Dental Prostheses (RDP), and 475 cases of implant prosthesis. The mean duration of failed FDP was $11.41{\pm}0.30years$ and the median was 10 years. The mean duration of failed RDP was $8.18{\pm}0.29years$ and the median was 7 years. The mean duration of failed implant prosthesis was $7.99{\pm}0.30years$ and the median was 7 years. The factors related to the failure were as follows: number of units, abutments, abutments treated with root canal, and plaque index in FDPs; treated and opposing dentition in RDPs; the number of implants, duration of use, and plaque index in implant prostheses. Conclusion: The average duration of failed prosthesis was 11.41 years for FDPs, 8.18 years for RDPs, and 7.99 years for implant prosthesis, according to the evaluation with newly developed KAP criteria.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.10 no.4
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• pp.167-175
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• 2015

This study examined the linkage between uncertainty tolerance and attitude toward trying business start-up. Uncertainty tolerance can classify by degrees of uncertainty as risk and ambiguity. We examined the effects of risk tolerance and ambiguity tolerance on attitudes toward trying success and failure. And we also examined the effect of attitudes toward trying success and failure on business start-up trying. This study investigated these relationships using 173 under graduate students. The result of analysis indicated that the risk tolerance had positive effects on attitude toward trying failure, but it had not any effect on attitude toward success and process. The ambiguity tolerance has positive effects on attitude toward trying failure and trying process, but it had not any effect on attitude toward success. The attitudes toward trying success, trying failure, and trying process had positive effect on attitude toward business start-up trying. Then results of this study suggests that the uncertainty(risk and ambiguity) tolerance showed a role of antecedent of attitudes toward trying success and failure. Finally, this study concluded with a discussion of the implications of the research findings and directions for future research.

• Korean Journal of Construction Engineering and Management
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• v.22 no.5
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• pp.39-47
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• 2021

As domestic construction companies, which used to be concentrated in the Middle East, have expanded their overseas orders to new markets in Asia and Latin America, they have to cope with various conditions. The EPC plant project, which undertakes construction projects such as civil engineering and construction, design, purchase, construction and commissioning, has expanded its scope. As a result, it is important to collect Lessons Learned from the previous project, systematize it, and use it to respond to changes in the environment. However, many employees do not share their skills or experiences voluntarily. To do so, it is necessary to create and systematize a culture that shares experience and technology. In order to understand and analyze the current situation, a questionnaire was conducted on the EPC project-related departments of construction companies implementing the EPC plant project. About 74% of the participants said Lessons Learned's collection and utilization helped. About 53% of the people who collected and registered actual cases and 39% of the people who had experience in preventing problems using cases were identified as employees' perception and utilization of Lessons Learned systems. Detailed analysis showed differences in workplace, duties, and rank. Through this study, the current status of Lessons Learned collection and utilization of EPC plant projects is understood, and the research on collection and utilization improvement is being carried out.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.8 no.1
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• pp.61-67
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• 1987

과수농사를 잘 하려면 식물생리, 토양의 이$\cdot$화학적 성질, 비료의 성질과 작용, 병$\cdot$해충의 생활사, 농약, 유통등의 지식을 갖추어 조화있게 조절할 수 있어야 최소의 경비로 최대의 소득을 얻을 수 있다. 일반적으로 기본지식이 없이 다른 사람들을 따라서 농사를 짓다보면 너무나 몰라서 실패하는 경우가 많은데 과수농사에 성공을 하려면 수시로 발생되는 문제점에 대해서는 실물을 가지고 농촌지도소, 농촌진흥청 또는 농과대학에 가서 완전한 해답을 얻고 그 해답을 기록하여 두는 습관을 길러 지식을 축적한다면 실패의 원인을 감소시킬 수 있다. 과수농사 성공의 비결은 과종과 품종의 선택, 병$\cdot$해충방지, 알맞은 토양관리, 알맞은 전정, 생산물의 상품화 적기판매 등이 잘 되어야 높은 소득을 올릴 수 있다.

• 한국IT서비스학회:학술대회논문집
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• 2002.06a
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• pp.108-117
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• 2002

최근에 e-business가 각광을 받고 있는데, 그 이유는 전 세계적으로 인터넷 사용자들이 급격히 증가하고 있는 데다 무 점포 아이디어 사업이라는 장점 때문에 e-business 창업을 하려는 사람들이 급격히 늘어나고 있는 추세이다. 하지만 e-business 창업도 다른 사업과 마찬 가기로 철저한 사전 준비가 되어 있지 않으면 실패할 수밖에 없다. 아이디어만 좋다고 해서 무작정 큰돈을 벌 수 있는 것은 아니다. 따라서 본 연구에서는 먼저 e-business란 무엇인가에 대해 알아보고, e-business 창업 시 고려해야 될 사항과 실패원인들도 심도 있게 고찰해 본 후 성공적인 전략들에 대해 제시해보고자 한다.

• The KIPS Transactions:PartD
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• v.13D no.5 s.108
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• pp.709-716
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• 2006

As the software complexity increases, the development success rate decreases and failure rate increases exponentially. The failure rate related to the software size can be described by a growth function. Based on this phenomenon, this paper estimates the development success and completion rate using the Gompertz growth function. At first, we transformed a software size of numerically suggested $10^n$ into a logarithm and kept the data interval constantly. We tried to derive a functional relationship between the development success rate and the completion rate according to the change of logarithmic software size. However, we could not find a function which can represent this relationship. Therefore, we introduced the failure rate and the cancel rate which are inverse to the development success rate and completion rate, respectively. Then, we indicated the relation between development failure rate and cancel rate based on the change of software size, as a type of growth function. Finally, as we made the Gompertz growth function with the function which describes the cancel rate and the failure rate properly. We could express the actual data suitably. When you apply the growth function model that I suggested, you will be able to get the success rate and completion rate of particular site of software very accurately.

• The Journal of Korean Academy of Prosthodontics
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• v.61 no.2
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• pp.113-124
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• 2023

Purpose. The purpose of this study is to help increase the success rate by analyzing the types and characteristics of implant prosthesis and the survival rate. Materials and methods. Among implants placed between 2011 and 2020 at Sanbon Dental Hospital, College of Dentistry, Wonkwang University, a case restored by a prosthetic surgeon was investigated for the characteristics and correlation of failure. The causes of failure were classified as failure of osseointegration, peri-implantitis, fixture fracture, abutment fracture, screw fracture, screw loosening, prosthesis fracture, and loss of prosthesis retention. Prosthetic method, cantilever presence, placement location, etc. were analyzed for their correlation with implant failure. Results analysis was derived through Chi-square test and Kaplan-Meier survival analysis using SPSS ver 25.0 (IBM, Chicago, IL, USA). Results. A total of 2587 implants were placed, of which 1141 implants were restored with Single Crown and 1446 implants with Fixed Partial Denture, and the cumulative survival rate was 88.1%. The success rate of SC was 86.2% (984) and the success rate of FPD was 89.6% (1295), showing statistically significant differences, among which factors that had significant differences were abutment fracture, screw fracture, and screw loosening (P < .05). Conclusion. As a result of the 10-year follow-up, more failures occurred due to biomechanical factors than biological factors. Further studies on the success of implants will be needed in the future.