• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.40.3-40
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• 2002

Unmanned Aerial Vehicle(UAV) needs autonomous flight capability to accomplish various mission objectives. For this objective, the autopilot is a key element in the UAV system design. The principal goal of autopilot is to guide the aircraft under varying external disturbances throughout the mission phases. The external disturbances include gravity effect, wind gust, and other unexpected obstacles. The gust affects the aircraft flight performance to a significant extent. UAV's low speed, light weight, and the absence of human judgment makes un predictable gust more dangerous. Autopilot design in general takes the gust effect into account to satisfy flight performance requirement. In this study..

• Bulletin of the Korean Chemical Society
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• 제35권12호
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• pp.3532-3534
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• 2014

In theoretical simulations of proton transfer in DNA, environmental factors nearly have not been considered. In our calculations, using QM/MM method on the basis of CP2K, proton transfer on adenine-thymine base pair is studied in water, at wide scope temperature, and under the external electric field. Our results indicate that the external electric field induces the proton transfer at room temperature, and its intensity and temperature have some effect on hole localization and proton transfer.

• 한국안전학회지
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• 제16권4호
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• pp.123-127
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• 2001

Numerous PSC bridges are stregthened by the combined use of continuity of simple spans and addition of external prestressing. In this case prestressing sequences should be carefully checked due to the effect on the stress and camber of girders and slab. Various prestressing sequences were applied in this field test and measured values were analysed. This results show that preatressing sequences affact the stress and deflection of bridge members, so the prestressing sequence should be considered at the desist and construction stages of deteriorated bridges.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2003년도 추계 학술대회논문집
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• pp.102-105
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• 2003

The effect of the external balance strut on the wind tunnel model is investigated with simplified geometries. For this study, flat plate and elliptic wing are simulated with and without a cylinder. Pressure and wall shear stress distribution are analyzed to understand the effect of the cylinder.

• 한국주거학회논문집
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• 제19권5호
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• pp.29-36
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• 2008

The objective of his study is to research the effect of the 'Dagagu' housing purchase and the public rental housing supply on the nearby community. In the case of public rental housing, many studies have demonstrated that the perception that a public rental house is a low income dwelling has an external effect on the residents immediately outside the area such as the perception of the lowering of house prices. However, an advanced research concerning the 'Dagagu' housing purchase and public rental housing has not been carried out because it has only recently been enforced. Through a survey conduced of residents who live nearby the 'Dagagu' housing purchase and public rental housing the aim of his study is to show how the residents perceive the renal houses and are influenced by them. At the same time, this study demonstrates the external effect of rental house supply by analyzing the housing price around the area. Most people who live in the near by 'Dagagu' housing purchase and public renal housing have a negative opinion of his housing because they believe that the residential prices will depreciate. However, only about 40% of the people felt that the residential price depreciation as a result of the 'Dagagu' housing purchase and public rental housing supply was not visible.

• 벤처창업연구
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• 제7권1호
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• pp.35-45
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• 2012

본 연구는 2008년 벤처기업정밀실태조사 자료를 활용하여 벤처기업의 외부자원 활용, 특히 외부협력 네트워크 활용, 정부정책자금 활용과 벤처캐피탈 자금 활용이 기술혁신 성과에 어떠한 영향을 미치는가를 실증적으로 분석하였으며, 나아가 외부자원 활용이 기술혁신 성과에 미치는 효과가 성장단계에 따라 어떻게 달라지는지도 함께 분석하였다. 분석 결과 외부자원 활용과 관련된 모든 변수 즉, 외부협력 네트워크 활용, 정부정책자금 활용, 벤처캐피탈 자금 활용은 기술혁신 성과에 정(+)의 영향을 미치는 것으로 나타났다. 그러나 벤처기업의 성장단계에 따른 조절효과는 통계적으로 유의하게 나타나지 않았다. 다만 추가 분석에서 기술혁신 성과에 미치는 영향이 외부자원 활용의 유형에 따라 성장단계 별로 차이가 있다는 것을 발견하였다.

• 한방재활의학과학회지
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• 제24권4호
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• pp.187-193
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• 2014

Objectives The aim of this study is to analyze the therapeutic effect of external Qigong therapy for treatment of other people's disease on joint pain. Methods We searched articles from Pubmed, Chinese Academic Journals (CAJ) and Oasis online databases. Searching keywords were 'external qigong', 'external qi gong', 'qi therapy', '外气', '关节' and '기공'. After searching the articles, we performed quality assessment using Cochrane risk of bias (RoB) tool and risk of bias assessment tool for non-randomized study (RoBANS). Results Among the 117 articles were searched, 2 randomized controlled clinical trials (RCTs) and 2 single-group before and after studies were finally selected. All of 4 studies showed that external Qigong therapy has significant effect on joint pain. Conclusions Although external Qigong therapy has therapeutic effect on joint pain, it is not common therapy yet. However, external Qigong therapy requires more interests and studies in the future, because it is faithful therapy for Korean medicine theory.

• 대한인간공학회지
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• 제24권2호
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• pp.9-15
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• 2005

The purpose of this study is to quantitatively investigate perceived discomfort of complex shoulder postures with external loads and to propose a preliminary evaluation scheme of shoulder postures. Twelve healthy male adults participated in an experiment to rate their perceived discomfort of shoulder postures. The independent variables were shoulder flexion angle(45, 90 and 150$^{\circ}$), adduction/abduction angle(-30, -10, 0, 30 and 60$^{\circ}$), and external load(0, 1.5 and 3.0kg). The results revealed that the flexion angle, external load and their interaction significantly affected the perceived discomfort(p$<$0.05) but the effect of adduction/abduction angle on the discomfort was not significant(p$>$0.05). The effect of external load was much larger than that of any other factor with explaining about 81% of the total variation of discomfort scores. Based on the experimental results a preliminary scheme was presented to evaluate the stress of shoulder postures with external loads.

• 대한한방소아과학회지
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• 제30권3호
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• pp.97-107
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• 2016

Objectives The purpose of this study is to investigate recent clinical studies on the effect of external therapy for infantile anorexia. Methods We searched for the study at CNKI by a keyword 'xiaoaryanshizheng' after 2010. 40 clinical studies which were using one external therapy method were selected. Result Selected 40 clinical studies were divided into six types of external therapy. The subjects for these clinical studies were between three months and 14 years old children. The number of the subjects was between 20 and 260. The period of treatment was between three days and three months. Only using one external therapy for infantile anorexia had 84.62%-100% cure rate. Conclusions Based on these clinical studies, external therapy has been shown as an effective treatment on infantile anorexia.

• 설비공학논문집
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• 제29권3호
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• pp.97-104
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• 2017

Reinforcement of insulation in apartment buildings reduces the heating and cooling energy consumption by lowering the heat transfer in the building envelope. There are differences between internal and external insulation methods in heat transmission properties. However, some building load calculation programs cannot analysis the differences between the two. This is because these programs do no account for the timelag or thermal storage effect of the wall according to the location of insulation. In this study, the heat transmission characteristics of internal and external insulation were analyzed by EnergyPlus, and heating and cooling energy demand was compared. The results showed that external insulation system had lower heating and cooling loads than internal insulation system. Also the heat transfer rate of external insulation is steadier than internal insulation. About 13.6% of heating and cooling energy demand decreased when the outdoor wall was finished with external insulation compared to the demand with internal insulation.