Investigation of the Dependency of the Output Factor on the Field Size in Passive Scattering Proton Therapy at the National Cancer Center in Korea

김찬규,Ahn Sang Hee,Kim Kwang Hyeon,Kim Myeongsoo,Kim Tae Ho,Shin Dongho,Kim Haksoo,Lim Young Kyung,Jeong Jong Hwi,Lee Se Byeong 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.77 No.5

The dependency of the output factor on the field size in the passive scattering proton therapy at the National Cancer Center (NCC) in Korea was investigated through a comparison of the measured output factors. The output factor of the fields of the representative beam options was measured using a Pinpoint chamber with standard circular blocks of less than 5 cm in diameter. The measured output factors for different field sizes show that the dependency of the output factor on the field size is not negligible even in the field for the 5 cm in diameter for long-range proton beams. In addition, the conflicting dependency in shallow fields indicates that the potential contribution of scattered protons should be considered in predicting and modelling of the output factors in small fields.

퇴행성관절염 환자들에게 균형훈련이 균형지수에 미치는 영향

김찬규,이정훈,Kim, Chan-Kyu,Lee, Jeong-Hun 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.3

Purpose : In order to investigate the effects of balance training on patients with degenerative arthritis. Methods : 30 participants aged 60 or older participated in balance training for an 8-week period. The effects of the balance training were measured by the visual analog scale(VAS) and static and dynamic balancing. The following are the results of the study. Results : There were no statistically significant differences in measurements of pain when control group participants were at rest and while walking as measured by VAS, but there were statistically significant reductions for the experiment group. Within the control group, there were no statistically significant differences between pretest and posttest results for opened and closed-eye static balance index and visual dynamic balance index. However, within the experiment group, there were statistically significant differences between pretest and posttest results for opened and closed-eye static and dynamic balance indices. Conclusion : The results above provide evidence that balance training effects pain and balance of patients with osteoarthritis and aids in functional movement.

출판저널 칼럼

김찬규,Kim, Chan-Gyu 대한출판문화협회 1990 출판저널 Vol.70 No.-

건축공학 전산정보화교육 개선방안에 관한 연구

김찬규,Kim Chan-Kyu 한국건설관리학회 2005 건설관리 : 한국건설관리학회 학회지 Vol.6 No.1

한국건설산업의 전산화, 정보화가 가속되어가는 현재 학교 교육에서는 그에 따른 충분한 교육이 이루어지지 못하고 있다: 대학을 졸업하는 학생들도 산업체 취업 후 요구되는 전산, 정보화 기술에 쉽게 적응하지 못하고 있고, 산업체에서도 그들을 위한 별도의 교육을 실시하고 있는 형편이다. 아울러 기존 건축공학의 전산교육 또한 기능별 소프트웨어의 사용정도로 국한되어 있기 때문에 복합적이고 통합화 되어가는 산업체들의 전산화과정에 크게 뒤떨어져 있다. 본 연구는 대학 건축공학 교과과정에서 적용할 수 있는 전산정보화 교육 프로그램을 개발하여 학생들의 적응력을 높이는 데에 목적이 있다. 교육 프로그램은 2002년부터 2004년까지 두 개의 교과과정에서 연계되어 진행되었고 10개의 모듈과 1개의 프로젝트로 구성되어 있다. 교육 프로그램을 결과는 학생들의 산업체 전산정보화에 대한 이해와 취업준비를 위한 능력 함양은 물론 창의력 개발에도 일조하여 지속적인 연구 또는 기술개발에도 진로 동기 부여가 가능한 것으로 나타났다. The development of computer and information technology in Korean construction industry is accelerating its speed while the education of Universities regarding to those technology is hardly catching up. Students graduated from schools are having difficulties in adapting themselves into the technology and as a result the industry is operating its own educational problem for the newcomers. This research develops the educational program of computer and information technology in school and therefore enhance the adaptability of the students for the industry. The program is open from 2002 up to 2004 liking two courses and including 10 modules and a project. The educational program consists of computer labs and lectures or seminars. The result of the educational program enables students to understand the computer and information technology used in the industry, an to improve the interest and skills of those, and additionally to motivate themselves into participating the continuous research and development of the technology.

유한요소 해석을 통한 활공비행체의 입수충격해석

김찬규,황영은,Kim, Changyu,Hwang, Youngeun 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.4

In this paper, impact characteristics of a water entry gliding vehicle were analyzed using a finite element method. To guarantee the validity of analysis results, a convergence test was performed for several ratios of Euler and Largrange mesh sizes. The impact coefficient was calculated with respect to entry angles and angle of attacks. It can be observed that the impact coefficient was large at a high cross-section gradient and was also affected by cavitation. This study could be useful in the preliminary design stage of a water entry bomb development.

인수공통전염병의 감염조사연구 및 예방(영장류편)

김찬규,성유석,Kim Chan Kyu,Sung Yoon Suk 대한수의사회 1979 대한수의사회지 Vol.15 No.5

An Evaluation of the Impact of Integration and Computerization on Construction Projects

김찬규,Kim Chankyu Korean Institute of Construction Engineering and M 2001 한국건설관리학회 논문집 Vol.2 No.4

The level of awareness and actual implementation of integration and computerization in the construction industry is growing. However, it is not clear at this point how to assess the extent of their impact and to identify in which ways they better support the construction projects related to their success. The objectives of this research are the development of a model to evaluate the impact of integration and computerization on construction projects and the recommendation of guidelines for companies in identifying suitable ways for them to incorporate integration and computerization Into their operation. The developed conceptual model has been found robust enough to be used as a benchmarking tool in evaluating the performance of the construction process and to strategize its future operation.

기업 온실가스 인벤토리 구축에서 검증까지

김찬규,Kim, Chan-Gyu 에너지절약전문기업협회 2009 esco Vol.58 No.-

뇌출혈으로 인한 편마비 환자의 재활치료 후 보행능력에 영향을 주는 요인

김찬규,김권영,Kim, Chan-Kyu,Kim, Kweon-Young 대한물리치료과학회 1999 대한물리치료과학회지 Vol.6 No.2

The purpose of this study was to evaluate the factors influencing the ambulatory status in hemiplegia with intracerebral hemorrhage after rehabilitation. Thirty patients with stroke who was admitted in the Chosun University Hospital, between from January 1st' 1998 and December 31st' 1998, were included in this study. The following variables as a potential predictors for ambulation were evaluated at treatment of the stroke onset; 1) general characteristics including age and sex, and 2) clinical characteristics including frequency and onset time of the stroke, affected side, duration of the treatment, time interval between onset and rehabilitation, manual muscle test of paretic limb, sitting and standing balance, proprioception, perception, cognitive function. We compared and analyzed the these variables to the two type of ambulatory status at the time of the discharge by Modified Barthel Index, independent, dependent. The data were analyzed by student t-test, Fisher-exact test, Mann Whitney-U test, $X^{2}$-test, correlation analysis(spearman's). The results were as follows; 1. Were no significantly inflenced independent ambulatory status among general characteristics. 2. Frequency of the stroke and proprioception (p<0.05), muscle strength of the lower limb, cognitive function and standing balance (p<0.01), perception and sitting balance (p<0.001) were significantly inflenced independent ambulatory status among clinical characteristics. 3. Independent Variable correlated with the ambulatory status were muscle strength of the lower limb, proprioception and sitting balance (p<0.05), standing balance, frequency of the stroke, perception and cognitive function (p<0.01). Therefore the muscle strength of the lower limb, proprioception, sitting balance, standing balance, frequency of the stroke, perception, cognitive function were the most significant influencing factors of ambulatory status after rehabilitation.

뇌졸중 환자의 최근 임상적 고찰

김찬규,오명화,Kim, Chan-Kyu,Oh, Myung-Hwa 대한물리치료과학회 2002 대한물리치료과학회지 Vol.9 No.1

The purpose of this study is to present the tendency of stroke data on patients with stroke admitted to the hospital and to investigate the risk factors of stroke. We reviewed of 104 patients with stroke admitted to the hospital of from July 2001 to August 2001. The highest incidence of the stroke was noted in the group of 60 years of age with the rate of male(63.5%) to female(36.5%). The occurrence rate of ischemic stroke(51.9%) was higher than that of hemorrhagic stroke(48.1%). Middle cerebral arterial territory was the most commonly involved site cerebral arterial causes. The possible contributing factors of stroke were hypertension(52%), cigarette smoking(36.5%) and diabetes mellitus(18.3%). cardiac patients(16.3%). The seasonal preference was winter and autumn followed by summer and spring.