• 제목/요약/키워드: 박윤기

검색결과 221건 처리시간 0.027초

Tractor-Semitrailer 차량의 브레이크 시스템 설계 프로그램 개발 (Development of the Design Program of the Brake System for the Tractor-Semitrailer Vehicle)

  • 서명원;권성진;박윤기;양승환;박병철
    • 한국자동차공학회논문집
    • /
    • 제9권3호
    • /
    • pp.108-120
    • /
    • 2001
  • In this paper, the braking performance considering the dynamic weight is analyzed about the tractor-semitrailer vehicle. The basic brake performance, the parking brake performance, the emergency brake performance and the locking point deceleration etc. are to be calculated for the brake system design of the tractor-semitrailer vehicle. This braking performance is related to traffic regulations and braking characteristics according to the vehicle deceleration, the tire-road friction coefficient and specifications of the air brake system. The design program for the braking performance based on various design variables of the vehicle and the air brake system is developed integrating the analysis functions. This design program is developed by an object oriented programming method that is windows based. GUI (Graphic User Interface) function and the convenience of operating are greatly considered.

  • PDF

경추견인법 (Cervical Traction)

  • 박지환;박윤기
    • The Journal of Korean Physical Therapy
    • /
    • 제3권1호
    • /
    • pp.203-209
    • /
    • 1991
  • Cervical traction effects its benefits by immobilizing the neck when it is used in a continuous manner from a reclining position. when used intermittently traction functions by elongating the neck and straightening the cervical Lordosis. This position of slight flexion opens the posterior articulations, widens the intervetebral foramina, disengages the facet surfaces, and elongates the posterior muscular tissues and Ligaments. The duration of traction is arbitary but the amount of traction is that which is tolerated by the patient and benefits the patient's problem. Application of traction in slingh flexion accomplishes the same separation with Less force and thus with Less discomfort experienced by the patient. But the effect of traction on the disks is debated.

  • PDF

요통의 물리치료적 접근 -원인과 물리적진단 중심으로- (The Phsical therapeutic Approache of Low Back Pain On the Study of Cause and Phscal Examination)

  • 박윤기;박지환
    • The Journal of Korean Physical Therapy
    • /
    • 제3권1호
    • /
    • pp.221-227
    • /
    • 1991
  • Regardless of the age, Low back pains are appeared to the highest occurrence ratio and every one meet with the disease once at least through life. In order to treat a pain, therefore, it make a accurated treatment program by the accurated a cause and evaluation and can expected to effects of treatment. In order to do the perfected physical therapy, futhermore, it is nessessary more systematic studies not a cause and physical diagnosis but pathological aspects.

  • PDF

압력 용기 분할 경관의 초기 평판 형상 설계 기법 연구 (A Study on Design Method of Developed Shape for Pressure Vessel Segment Heads)

  • 권일근;박윤기
    • 한국소성가공학회:학술대회논문집
    • /
    • 한국소성가공학회 2008년도 춘계학술대회 논문집
    • /
    • pp.349-352
    • /
    • 2008
  • In this study, a design method of developed shape for double-curved pressure vessel segment heads was proposed in consideration of in-plane strain induced by forming works. In order to obtain the developed shape of double-curved plate, at first, the segments are subdivided into elements and then they are stacked into a series of strips producing the outline of the approximately developed shape. The developed shape was determined by imposing the in-plane displacement obtained from forming analysis and regression analysis on the outline of the approximately developed shape. The validation of the proposed design method was verified by applying it to the actual products.

  • PDF

Movielens 데이터를 이용한 영화 추천 시스템 개발 (A Movie Recommendation System Using Movielens Data)

  • 박윤기;정현철;홍지원;김상욱
    • 한국정보처리학회:학술대회논문집
    • /
    • 한국정보처리학회 2011년도 추계학술발표대회
    • /
    • pp.1226-1228
    • /
    • 2011
  • 본 논문에서는 영화를 즐기는 이용자들에게 영화를 추천하는 추천 시스템 개발에 대해 논한다. 본 논문에서는 유저 기반 협업 필터링 기술을 적용한 영화 추천 웹 서비스를 개발하였고, 웹 크롤링 기술을 이용하여 추천된 영화의 상세한 정보를 제공할 수 있도록 하였다. 유저 스터디를 수행한 결과 이 영화 추천 시스템을 이용한 사용자들의 만족도는 대체로 높았다.

검사자세와 주관절 굴곡정도가 파악력에 미치는 영향 (The Effect on Grip Strength with Testing Posture and Flexion Degree of Elbow)

  • 김태숙;박윤기;박영한;배성수
    • The Journal of Korean Physical Therapy
    • /
    • 제7권1호
    • /
    • pp.43-49
    • /
    • 1995
  • The purpose of this study were to determine the effect of testing posture and elbow position on grip strength. Two hundred college students 100 males and 100 females aged 18 to 28 years, participated in the study. A Grip-Strength Dynamometer was used to measure the grip strength in two testing posture(sitting and standin) and four elbow position$(0^{\circ},\;45^{\circ},\;90^{\circ}\;and\;135^{\circ}\;flexion)$ correlations and t-test was used to determine any significant difference in grip strength between the testing posture and the elbow position. The results were as follows : 1. The grip strength was affected by testing pasture and flexion degree of elbow. 2. The grip strength was stronger in the standing than sitting in subjects 3. The grip strength decreased according to elbow flexion increase in subjects. 4. The higher grip strength gained in the standing with the elbow 0 flexion. 5. The grip strength by elbow flexion degree showed significant difference at sitting and standing posture. The grip strength was significant differenced by testing position at same elbow flexion degree.

  • PDF

잎새버섯 봉지재배시 영양원으로서 맥주박 효과 (Effect of brewers dried grain as a nutrient supplement in plastic vinyl bag cultivation of maitake (Grifola frondosa S. F. Gray))

  • 이재홍;이남길;문윤기;정태성;권순배;박영학;김인종
    • 한국버섯학회지
    • /
    • 제14권2호
    • /
    • pp.34-38
    • /
    • 2016
  • 잎새버섯 봉지재배에 적합한 영양원을 구명하기 위하여 밀기울, 건비지 및 맥주박을 다양하게 혼합하여 생육 및 수량특성을 조사한 결과, 수확소요일수는 혼합배지 Mix II가 61.3일로 가장 적었으며, 수량에서는 혼합배지 Mix IV가 142.6g으로 가장 높게 나타났다. 밀기울과 맥주박의 적정 혼합율을 구명하기 위한 시험 결과, 맥주박 첨가율이 높아질수록 수확소요일수가 줄어들었으며, 수량은 맥주박 15%와 밀기울 5% 혼합율 처리에서 140.8 g으로 가장 높게 나타났다.

임신과 동반된 특발성 혈소판 감소성 자반증 1례 (A Case of Idiopathic Thrombocytopenic Purpura in Pregnancy)

  • 김미숙;황보호준;이영기;박윤기;이승호
    • Journal of Yeungnam Medical Science
    • /
    • 제10권2호
    • /
    • pp.512-517
    • /
    • 1993
  • 임신전 만성 ITP로 진단되어 prednisolone 경구투여와 vincristine 정맥주사로 치료후에 추적관찰중 환자가 임신하였으나 조기진통으로 질식 둔위분만했으며 증세가 재발하여 prednisolone, 감마글로불린을 투여하였으나 호전이 없이 비장적출술을 시행한 임신과 동반된 특발성 혈소판 감소성 자반증 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

  • PDF

만성 목 통증 환자에서 자가신장운동과 윗등뼈 관절가동술이 통증과 가동범위에 미치는 영향 (Effects of Self-stretching Exercise and Upper Thoracic Joint Mobilization on Range of Motion and Pain of the Patients with Chronic Neck Pain)

  • 황보각;김기철;박윤기
    • 대한물리의학회지
    • /
    • 제7권4호
    • /
    • pp.509-514
    • /
    • 2012
  • PURPOSE: This study aims to compare the effects of upper backbone joint mobilization and self-stretching exercise in the patients with chronic neck pain. METHODS: Thirty seven patients with chronic neck pain were divides into self stretching group(SSG, n=18) and mobilization group(MG, n=19). To assess the degree of neck pain, the visual analog scale (VAS) was utilized, and to measure the joint range of motion at the flexion-extension, it was compared and analyzed by using the cervical range of motion (CROM) device. RESULTS: The joint range of motion and visual analog scale of SSG and MG showed significant effects on both groups. In the comparison of groups, there was no significant difference, but it indicated effects on improving the pain and the range of joint motion in MG. CONCLUSION: According to the analysis, not only self-stretching exercise intervening for direct treatment but also upper backbone joint mobilization intervening for indirect treatment are effective to improve the pain and the range of motion.

흉추가동운동과 제자리 달리기 운동이 20대 대학생의 폐기능에 미치는 영향 (The Effects on the Pulmonary Function of 20s Subjects according to Thoracic Mobility Exercise and Place Running Exercise)

  • 김종우;황병준;박윤기
    • 대한정형도수물리치료학회지
    • /
    • 제22권2호
    • /
    • pp.65-69
    • /
    • 2016
  • Background: The purpose of this study was to determine whether place running exercise that combines thoracic mobility exercise program increases pulmonary function of the 20s subjects. Method: Thirty subjects in their 20s were randomly assigned to on experimental group (n=15) or control group (n=15). Over the course of four weeks, the experimental group participated in place running exercise that combines thoracic mobility exercise program for 30 minutes three times per week and the control group participated in place running exercise and thoracoabdominal stretching exercise for 30 minutes three times per week. Subjects were assessed pre-test and post-test by measurement of pulmonary function Results: Our findings show that the experimental group had significant difference in expiratory reserve volume and vital capacity and maximal voluntary capacity (p<.05). In the comparison of the two groups, the experimental group had higher vital capacity and maximal voluntary capacity than the control group. Conclusion: In this study, the experimental group showed greater improvement in pulmonary function than the control group, which indicates that the place running exercise that combines thoracic mobility exercise program exercise is effective at increasing the pulmonary function.

  • PDF