• 제목/요약/키워드: 서진우

검색결과 130건 처리시간 0.023초

구조해석용 소프트웨어 개발에서의 윈도우즈 응용에 관한 연구 (A Study on Windows-Application in Development of Structural Analysis Softwares)

  • 송준엽;서진국;신영식;우광성
    • 한국전산구조공학회:학술대회논문집
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    • 한국전산구조공학회 1995년도 봄 학술발표회 논문집
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    • pp.170-175
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    • 1995
  • In this paper, the problems on Windows application for finite element structural analysis softwares are presented. These Windows application programs provide the better graphical representation of structural geometry through the GUI, and provide the integrated environment for managing various processors such as a preprocessor and a postprocessor. Two examples show the efficiency of this system which can represent various inputs and outputs concurrently on multi-windows by dialog-type.

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Candida magnoliae SR101에 의한 Erythritol 및 Gluconic acid 생산에 대한 Phosphate의 영향

  • 박병준;서진호;유연우
    • 한국생물공학회:학술대회논문집
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    • 한국생물공학회 2000년도 춘계학술발표대회
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    • pp.255-258
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    • 2000
  • The effect of phosphate on the production of erythritol and gluconic acid during the batch fermentation of Candida magnoliae SR101 was investigated. In the flask culture experiments, the results showed that phosphate concentration affected the production of erythritol and gluconic acid in Candida magnoliae. In the tormentor experiments, the increase of phosphate concentration of medium up to 10 g/L increased the gluconic acid, while the maximum erythritol concentration was 121.7 g/L from 250 g/L glucose and 3 g/L $KH_2PO_4$

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다수의 미지 가상 입력 계수들을 가지는 비선형 시스템에 대한 적응 안정화 (Adaptive stabilization for nonlinear systems with multiple unknown virtual control coefficients)

  • 서상보;정진우;서진헌;심형보
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2009년도 정보 및 제어 심포지움 논문집
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    • pp.76-78
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    • 2009
  • This paper considers the problem of global adaptive regulation for a class of nonlinear systems which have multiple unknown virtual control coefficient. By using a new parameter estimator and backstepping technique, we design a smooth state feedback control law, parameter update laws that estimate the unknown virtual control coefficients, and a continuously differentiable Lyapunov function which is positive definite and proper.

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소자도담강기탕(蘇子導痰降氣湯)의 호흡기 염증 완화효과 (Relieving effect for respiratory inflammation of Sojadodamgangki-tang)

  • 한윤지;선창우;우연주;이동혁;서진우;유준상;김주희;권보인
    • 대한예방한의학회지
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    • 제27권2호
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    • pp.23-33
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    • 2023
  • Objectives : Sojadodamgangki-tang and its main components are traditional korean medicinal methods for treatment of cough, sputum and dyspnea. Using a respiratory inflammatory model, we intend to reveal the anti-inflammatory effect and its immune mechanism of Sojadodamgangki-tang. Methods : We used a papain-induced respiratory inflammatory mouse model. 8-week-old female BALB/C mice were divided into 3 groups as follows: the following groups: saline control group, papain treated group (vehicle), papain and Sojadodamgangki-tang(200 mg/kg) treated group (n=4). To evaluate the anti-inflammatory effect of Sojadodamgangki-tang extracts, inflammatory cell infiltration was measured in bronchoalveolar lavage fluid (BALF) and nasal lavage fluid (NALF). In addition, the effects of Sojadodamgangki-tang extracts on Th2 cell population in lung were determined by using flow cytometry. Results : Sojadodamgangki-tang extracts administration reduced inflammatory cell infiltration in BALF and NALF, especially of eosinophils. Furthermore, total immunogloblin (Ig)-E levels was reduced in BALF and serum by drug administration. Interestingly, Sojadodamgangki-tang extracts treatment also decreased the Th2 cell (CD4+GATA3+) population in lung. Conclusions : Our findings indicate Sojadodamgangki-tang extracts have anti-inflammatory effects by mediating Th2 cell and B cell activation.

강화유리 표면의 친수성 특성 조사에 관한 연구 (Study of the Hydrophilic Properties of Toughened Glass)

  • 박성진;서진우;이승규
    • 한국광학회지
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    • 제24권1호
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    • pp.39-44
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    • 2013
  • 본 연구에서는 플라즈마 장치의 광 특성과 접촉각 특성을 조사하여 스마트폰에 사용되는 강화유리 표면의 친수성 특성을 알아 보였다. 본 연구에서 공정 가스의 분압과 입력 전압의 정도에 대한 강화유리 표면의 친수화 정도를 조사하였다. 각 변수에 따라 아르곤 가스의 이온화 정도에 따라 차이가 있음을 알 수 있었다. 본 연구에서, 강화유리 표면은 처리되기 전과 비교하여 접촉각의 변화나 광방출 특성에서 나타난 것들을 토대로 친수화가 되었음을 알 수 있었다.

척추측만증 환자에 관한 임상적 고찰 (A Clinical Study on Patients of Scoliosis)

  • 박민정;서진우;박쾌환;이경윤
    • 대한추나의학회지
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    • 제5권1호
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    • pp.205-211
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    • 2004
  • Objective : This study is designed to provide clinical data about patients of scoliosis for clinicians. Methods : We investigated 112 patients who have signs and symptoms of scoliosis. visited Vertebral -Joint Center of Conmaul Oriental Medical Hospital from January 2003 to July 2004. We measured Cobb's angle in the 112 patients' X-ray of full spine AP and lateral view and also analyzed age, sex, chief complaints. Results : 1. We investigated 72 female and 40 male patients. The most common distribution of age was 20's in both sex. 2. In the scoliosis angle : The average scoliosis angle was $9.27^{\circ}{\pm}6.06^{\circ}$ in 112 patients. The average scoliosis angle of 40 male patients was$8.9^{\circ}{\pm}6.77^{\circ}$. The average scoliosis angle of 72 female patients was $9.48^{\circ}{\pm}5.67^{\circ}$. 3. The most common region of scoliosis was thoracic spine with 37 patients. 4. The most common chief complaint was low back pain with 69 patients. In the 48 patients. self awareness of scoliosis was included in the chief complaint.

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매핵기(梅核氣)로 인해 음식을 삼키지 못하는 전환장애 환아 치험 1례 (A Case Report of Conversion Disorder Patient with Globus Hystericus and Swallowing difficulty)

  • 황은영;서진우;서현욱;정선용;김종우
    • 동의신경정신과학회지
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    • 제20권2호
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    • pp.197-206
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    • 2009
  • Objective : This study was designed to research the effect of the korean traditional herbal medicine and oriental psychotheraphy on globus hytericus and swallowing difficulty caused by conversion disorder. Methods : A 10 years old male patient suffer from globus sensation and swallowing difficulty for 2 months. We treated him with the korean traditional herbal medicine(Banhahubak-tang) and oriental psychotheraphy for 27 days. Results : After this treatment, globus sensation and swallowing difficulty were decreased and appetite were increased. In addition, compulsion had been severe and it was improved after this treatment. Conclusions : Psychiatrists have reported that conversion disorder is not common in children especially under 10 years old. Globus hystericus, dysphagia is symptoms of conversion disoder but globus hystericus is very rare in childhood. In this case, we recognized that the korean traditional herbal medicine and oriental psychotheraphy could be effective for the clinical symptoms of globus hystericus and swallowing difficulty.

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뉴로피드백을 이용한 명상훈련이 정상 성인의 기억과 집중력에 미치는 영향 (The Effects of Breath Meditation with Neurofeedback on Memory and Concentration of Healthy Adult Volunteers)

  • 정선용;서진우;김종우;황의완
    • 동의신경정신과학회지
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    • 제19권2호
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    • pp.15-39
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    • 2008
  • Objective : The objective of this study was to investigate the effects of breath meditation with neurofeedback on memory, concentration of healthy adult volunteers Method 25 healthy adult volunteers were divided into two groups. One group was treated with breath meditation and real neurofeedback, but the other group was administered with breath meditation and sham neurofeedback three times a week for 10 sessions, Before and after 10 sessions neurofeedback, all subjects were measured by cognitive functions assessment, heart rate variability, BDI, STAI, K-WAIS, HRSD, VAS about amnesia. Results : 1. Breath Meditation decreased error rate and increased concentration, cognition strength, and success rate of Cognitive Functions Assessment. Also, Breath Medication elevated IQ score of K-WAIS short form. 2. Sham : neurofeedback increased concentration, cognition strength compared to Real neurofeedback. Conclusion : The results suggest that breath meditation might effect cognitive function of healthy adult positively, but neurofeedback is not clear. In order to prove whether neurofeedback is effective or not, it should be studied more.

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형상변경에 따른 구조물 감쇠특성 및 소음 특성 예측기술 연구 (Study for the prediction of damping and sound radiation characteristics due to structural shape changes)

  • 유지우;서진관;이상우;박정원;박준홍
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2014년도 추계학술대회 논문집
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    • pp.332-335
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    • 2014
  • Applying damping sheets or dampers (dynamic or mass) can reduce noise from vibrating structure as well as vibration. However, this approach requires increases of weight and cost. If one can reduce structural noise by only modifying the structural shape, which would be the best practice. It is natural that the noise characteristics change when the structure is modified, but the recent experiment on the sunroof frame showed that the modification of the frame beads results in change of the structural damping, so that the corresponding noise can be reduced. In this context, the reason why the structural damping and the related noise upon an impact excitation is changed is theoretically investigated. The change of dynamic and damping characteristics of the strip panels when their shapes are modified is experimentally found and it is shown that such behaviours can be predicted by computer simulation. Some experimental specimen, mainly strip-type panels, are examined for the numerical verification, and especially damping ratios are investigated.

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