아이스 하키 슬랩 샷(slap shot)의 운동학적 분석

문곤성,박종률 한국운동역학회 2003 한국운동역학회지 Vol.13 No.2

Moon, G-S and Park, C-R. Kinematic analysis of Ice hockey slap shot. Korean Journal of Sport Biomechanics, Vol. 13, No. 2, pp. 13-28. The purpose of this study was to analyze the kinematic characteristics of ice hockey slap shot. The subjects of this study were four professional ice hockey players. The reflective markers were attached on the anatomical boundary line of body and the subjects were asked to perform the shot. Ariel Performance Analysis System was used to capture and digitize the shooting image, the date were analyzed by LabView 6i. The results were as follows. 1. The period of the back swing phase was 0.542±0.062sec, the down swing phase was 0.28±0.056sec and the total swing time was 0.825±0.017sec. 2The maximum linear velocity of the stick blade for x direction was shown after 7% of impact, for y, z direction were shown before 2%, 8% of impact. 3. The maximum velocity of each segment for the left arm was 2.35±0.05m/s in the upper arm, 3.56±0.34m/s in the forearm, 4.75±0.67m/s in the hand. 4. The maximum velocity of each segment for the right arm was 4.67±0.43m/s in the upper arm, 7.22±0.69m/s in the forearm, 9.42±0.89m/s in the hand. 5. The angle of left elbow was generally flexed from the ready stance to the impact and was 82.26±3.45° on the moment of impact. 6. The angle of the left shoulder was increased in the down swing phase and was 78.74±4.78° on the moment of impact. 7. The angel of the right shoulder was decreased in the down swing phase and increased before the impact. and the angle was 51.28±3.54° on the moment of impact.

보행 속도 변화에 따른 발목 관절의 운동학적 분석과 하퇴 근육의 근전도 분석

문곤성 한국운동역학회 2005 한국운동역학회지 Vol.15 No.1

G. S. MOON, The kinematic analysis of the ankle joint and EMG analysis of the lower limbs muscle for the different walking speed. Korean Journal of Sport Biomechanics, Vol. 15, No. 1, pp. 177-195, 2005. The purpose of this study was to analyze the kinematic variables of ankle joints and EMG signal of the lower limbs muscle activity for the different walking speed. The subjects were 6 males of twenties. It was classified into three different walking speed-0.75m/s, 1.25m/s, 1.75m/s. The walking performances were filmed by high speed video camera and EMG signal was gained by ME3000P8 Measurement Unit. Tibialis anterior(TA), Gastrocnemius medial head(GM), Gastrocnemius lateral head(GL), Ssoleus(SO) were selected for the dorsiflexion and plantarflexion of the ankle joint. The result of this study were as follows: 1. In the gait cycle, The time parameters for the phases were showed significant difference without the terminal stance phase and terminal swing phase for the different walking speed. 2. The angle of ankle joint was no significant difference for each time point and MDF, MPF but increasing walking speed the angle had the increasing pattern slightly. 3. The angular velocity of ankle joint was showed the significant difference for LHC, RTO, RKC, LHU, MPF and MDF point along the walking speed. 4. TA was showed about 2-3 times muscle activity at the 1.75m/s than 1.25m/s in some phases. And it was showed the similar muscle activity between the 0.75m/s and 1.25m/s but, showed a little much muscle activity in the 0.75m/s. GM was showed about 2-3 times muscle activity in the 1.75m/s than 1.25m/s, and even much muscle activity at the 0.75m/s than 1.25m/s in some phases. GL was showed increasing pattern of muscle activity specially in the initial swing phase as the walking speed increased. SO was showed about 3 times muscle activity in the 1.75m/s than 1.25m/s during the plantarflexion of ankle joint. It was showed the similar muscle activity between the 0.75m/s and 1.25m/s but, showed a little much muscle activity in the 1.25m/s.

수익관리의 이해와 ISP사업에의 응용

윤문길,김후곤,윤덕영 한국항공대학교 경영연구소 2002 경영연구 Vol.9 No.1

The concept of revenue management have been used mainly in the service-industries like hotel and air transportation which handles perishable asset. Recently however, it is being increasingly applied to many other areas including travel, railway and medicine. This paper tries to introduce the concept into the internet business. Revenue management used in the service industry is a good system for the management of perishable asset. Internet business can be classified acr various industries according to the characteristics of the individual companies. Contents providers and internet service providers are very similar to service industry, and revenue management system is suitable to them. This paper develops the ways to apply the revenue management concept to ISP business.

고등학생의 체육수업 참여동기가 체육수업 만족도에 미치는 영향

강민곤;박문환 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.2

This study focuses on analyzing relationship between motive of high school P.E. and the students’ Satisfaction providing basic information in order to induce their voluntary participation through physical activity. First, participatory motivations were different according to sex, grade year, and athletic club activities; Male students showed more participation than females, and the first-year students were the most-highly motivated ones, followed by third- and second-year students. Also, the students who were enrolled in athletic clubs had better participatory motivation than those who were not. Second, in satisfaction criteria, male students were satisfied more than females. The level of satisfaction according to school year did not show significant differences, showing p>0.05. The students who were participating in athletic clubs appeared to have higher level of satisfaction than those who were not. Third and the last, the conclusion of the effect of the motivation of participation toward satisfaction is like below: it appeared that refreshing (B=.210, p<.01), one of the factors of the motivation of participation, and satisfaction have positive co-relationship. Interest (B=.215, p<.001), another factor of the participatory motivation, appeared to affect positively on satisfaction - which shows positive co-relation. Sociality (B=.208, p<.001) also affected positively on satisfaction, so that one can safely say the higher the sociality, the higher the satisfaction.

고등학생의 체육수업 참여동기가 내적동기에 미치는 영향

강민곤;박문환 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.2

This study focuses on analyzing relationship between motive of high school P.E. and the students’ intrinsic motivation providing basic information in order to induce their voluntary participation through physical activity First, participatory motivations were different according to sex, grade year, and athletic club activities; Male students showed more participation than females, and the first-year students were the most-highly motivated ones, followed by third- and second-year students. Also, the students who were enrolled in athletic clubs had better participatory motivation than those who were not. Second, intrinsic motivations were also different according to sex, grade year and athletic club activities; male students were motivated more intrinsically than females, and the first-year students showed highest intrinsic motivation, followed by third- and second-year students. Also, the students who were enrolled I athletic clubs had higher intrinsic motivation than those who were not. Third, for the influence of the motivation of participation to intrinsic motivation, higher nothing-motivation (B=-.116, p<.05) seemed to result lower intrinsic motivation, and higher interests (B=.356, p<.001) appeared to bring higher intrinsic motivation.

골다공증에 의한 압박 골절의 경피적 척추 성형술의 부작용

박희곤,김명호,유문집,이성철,박진영,황우연,안진우 대한골절학회 2003 대한골절학회지 Vol.16 No.4

소수를 이용한 암호화 알고리즘

송문빈,오재곤,정연모 경희대학교 산학협력기술연구원 1998 산학협력기술연구논문집 Vol.4 No.-

In this paper, we propose a prime code and a new encryption algorithm as its application. The characteristics of prime numbers with irregular distribution and uniqueness are used to generate the prime code. Based on the prime code, an encryption algorithm for secret key is presented. Since the algorithm requires simpler operations than existing encryption such as DES, the burden form hardware implementation of the encryption and decryption process is alleviated. The algorithm proposed was modeled in VHDL, verified by means of simulation, and implemented with an Altera FPGA chip.

p-형 Si(100) 기판 위에 성장시킨 Bi_(3.25)La_(0.75)Ti₃O_(12) (BLT) 박막의 전기적 특성

최은경,박문흠,김현주,하태곤,강민주,김상수 昌原大學校 基礎科學硏究所 2003 基礎科學硏究所論文集 Vol.15 No.-

Bi₃zsLa(0.75)Ti₃0_(12) (BLT) thin film have been grown on p-type Si(l00) substrates by a sol-gel spin coating process. The structure and surface morphology of the film were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEMI. Furthermore, the electrical properties were examined by capacitance-voltage ( C-V) characteristics by using a LF Impedance Analyzer(HP 4192A). XRD measurement show layered perovskite structure with a single phase in BLT thin film annealed at 700C for 30 min in oxygen. The measured grain size of BLT on Si is about 0.04 - 0.1 pn. From the cross-sectional SEM image, BLT film thickness is measured to be 0.4 pm. The C-V characteristic hysteresis curves show that the NIFS (metal-fexroelectric-semiconductor) structure has memory effect. The memory window decreases, with increasing frequency at MFS structure. And it is found that the memory window increases as the applied voltage to the ferroelectric capacitor is increased. These phenomena may be due to polarization reversals of the BLT ferroelectric film and because of the charge injection from Si substrate into the ferroelectric thin film. The results obtained indicate that the present BLT films are suitable for making ferroelectric field effect transistor(FeFET) memory.

척추 골다공증에서의 골절 위험 한계치

박진영,유문집,유석주,이성철,박희곤,김명호 대한골대사학회 1995 대한골대사학회지 Vol.2 No.2

흉요추부 골절의 수술적 치료

김명호,유문집,이성철,박진영,유석주,박희곤 단국대학교 1996 論文集 Vol.30 No.-

The purpose of operative treatment in thoracolumbar spine fractures is anatomical reduction and stabilization of the fractures and thus promote neurological recovery and early rehabilitation. To achieve these goals, complete preoperative assessment and recognition of the fracture pattern is necessary in addition to good surgical technique. The authors analyzed 27 cases of thoracolumbar spine fractures operated from Jun. 1994 to Dec.1995 at the Department of orthopaedic surgery, Dan-kook University Hospital. All cases were analysed according to McAfee classification. In deciding the appropriate surgical approach, fracture pat-tern, stability and neurologic status were considered. The result were as follows; 1. Unstable burst fracture, 11 cases, was the most frequent type. 2. 1st lumbar fracture was the most common level in this series. 3. Fall down, 15 cases out of 27, was the most common cause on thoracolumbar spine fracture. 4. Anterior approach was performed in 8 cases and posterior approach was performed in 19cases. 5. Good results were obtained through firm fixation and early rehabilitabion.