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김진상,권영실,정병옥 대한물리치료학회 1999 대한물리치료학회지 Vol.11 No.1
The purpode of this study was to determine the EMG characteristies of 7 subjects with hemiplegic gait receiving therapeautic exercise after stroke. The skin electrode and gait analysis system were used. The normal gait of 6 health volunteers was analysised. The results were following. l. Gluteus maximus, the extensor of hip joint had high level of activity compared to normal, and had two peak in late stance phase and early swing phase. 2. Medial hamstring, the flexor of knee joint had law level of activity compared to normal, and had continuous low amplitude pattern. 3. Vastus lateralis, the extensor of knee joint had high level of activity compared to normal, and had not continuous high amplitude. From early stance phase and mid stance phase, activity had high level but after swing phase, similar to normal. 4. Gastrocnemius, plantar flexor of ankle ,joint had law level of activity compared to normal and had continuous low amplitude. 5. Tibialis anterior, dorsiflexor of ankle joint had similar muscle activity to normal and had continuous low amplitude.
김진상,김성주,성정호 한국데이타베이스학회 1998 국제학술대회 Vol.2 No.1
지식경영을 위한 다양한 대상 업무 중에서 텍스트 데이터의 마이닝은 특히 중요하다. 그 이유는 텍스트 데이터가 양적인 면에서 가장 풍부하고, 또 발견할 수 있는 지식을 가장 많이 포함하고 있기 때문이다. 본 논문에서는 텍스트 데이터베이스에서 지식발견을 위한 한 과정으로 텍스트 데이터베이스 내의 텍스트들을 분류하는 기법을 기술한다. 특히 문서 분류 방법은 데이터베이스의 일부 데이터를 훈련 예제로 간주하여 교사 학습 알고리즘을 통해 학습한 후 나머지 데이터를 이용해 분류 정확성을 검증 및 향상시킨다. 시험 데이터로는 인터넷의 뉴스그룹의 기사를 이용하였고, 시험 결과 분류의 정확성은 한글 및 영문 모두 최소 70% 이상으로 나타났다.
김진상,박래준,강기창,권영실 대한물리치료학회 1999 대한물리치료학회지 Vol.11 No.1
The Internet is an important tool in contemporary society. This study was carried out to investigate current use of internet and to suggest effective development of it in the field of physical therapy. A sample of physical therapy members in the internet responded to the questionare by means of e-mail from 26, April to 14, May, 1999. Of the 98 subjects, 26 completed the questionnaire, a response rate of 26.53%. The results were as follows. The most important problem to use internet in the field of physical therapy was poor information and abscence of database. The exchange of information among members, search database, virtual lecture system and distance treatment counseling in the future were expected. Ail members, professors of university and college, physical therapists in clinic and students must cooperate to construct database and useful information.
중력의 영향에 따른 슬관절 굴곡근과 신전근의 등속성운동 평가
김진상,채윤원,정동훈 대한물리치료학회 1998 대한물리치료학회지 Vol.10 No.1
Since isokinetic exercise can give an evaluation of muscle strength with great accuracy and objectively, it is widely used as the one of the important methods for evaluation of muscle performance. The purpose of this investigation was to compare values uncorrected for gravity with values corrected for gravity and to determine the effect of making this correction on knee flexors and extensors at three speeds. This investigation measured values isokinetically at 60°/sec, 120°/sec, and 180°/sec in 14 male and 17 female university students. The gravity effect torque(GET) is the torque resulting from the effect of gravity on the combined weight of the leg and dynamometer arm. The GET was added to the measured, extensors peak torque and subtraced from the flexors peak torque to yield gravity corrected values. Failure to consider GET greatly underetimated extensors torque and overtestimated flexors torque. Physical therapists must remember the importance of making the gravity correction in patients with reduced torque output where the gravitational torque is a greater percentage of the measured torque to ascertain correctly the relative strength of antagonists inversely affected by gravity.
Rhodopseudomonas sphaeroides의 고정화균체에 의한 수소생산의 효율적 기질공급
김진상,홍용기,신일식,조학래,장동석 한국산업미생물학회 1992 한국미생물·생명공학회지 Vol.20 No.1
Rhodopseudomonas sphaeroides B6 세포를 agar gel 중에 고정했을 때, 수소생산을 위한 최적 agar 농도는 2%(w/v)였다. B6의 2% agar gel 고정화균체(300㎖ gel: 2.85 ㎎ dry cells/㎖)와 비고정세포(1ℓ culture: 0.87㎎ dry cells/㎖)에 있어서 초기의 최고 수소 생산활성은 각각 47.5 및 48.O ㎖/hr/culture로 거의 같았다. 그러나, 수소생산이 거의 정지된 배양후기에 lactate의 제한공급(10mmole)에 의한 비고정세포의 활성회복은 50% 이하로 감소되었지만, 고정화세포의 활성은 거의 초기상태로 회복되었다. B6의 고정화균체를 이용하여 12시간 주기의 광조사 조건으로, 매 1ℓ의 수소생산시 마다 그에 소비된 만큼의 기질에 상당하는 9.3mmole의 DL-lactate와 1.86 mmole의 L-glutamate 함유 기본배지를 주기적으로 공급한 결과, 228시간의 배양기간 동안 명암의 반복 조건에도 불구하고 평균 510 ㎖/day/300㎖ ge1(2.9 ㎎ dry cells/㎖)의 속도로 수소생산이 지속되었다. 이 결과는 광합성세균에 의한 수소생산에 있어서, 보다 효율적 기질공급과 가변적인 태양광 이용 조건에 대응되는 자동배양 시스템의 구성 가능성을 시사한다. The Photosynthetic bacterium, Rhodopseudomonas sphaeroides strain B6 was immobilized on agar gel. The optimum concentration of agar for hydrogen production was 2% (w/v). Maximum rates of hydrogen production by immobilized (300㎖ of gel; 2.85㎎ dry cells/㎖) and free cells (1ℓ culture; 0.87㎎ dry cells/㎖) were 47.5 and 48.0 ㎖/hr/culture, respectively. However, when both cultures were fed by 10mmoles of lactate as limited electron donor at the later period of incubation, the activity of hydrogen production by free cells was significantly decreased but, immobilized cells continued hydrogen production with almost the same initial rate. We examined hydrogen production by immobilized cells of strain B6 under periodic illumination for 12 hr-intervals. When the culture was periodically fed by basal medium containing 9.3 mmoles of DL-lactate and 1.86 mmoles of L-glutamate as consumed electron donor and nitrogen source, respectively, for every one liter of hydrogen produced, hydrogen was evolved continuously with the average rate of 510 ㎖/day/300 ㎖ gel (2.9 ㎎ dry cells/㎖) during the incubation time for 228 hr.