150 ℃의 저온공정에서 p / i 계면을 개선하기 위한 반투명 수소화 비정질 실리콘 태양 전지 개발

최수원,송풍근,권정대 한국표면공학회 2020 한국표면공학회 학술발표회 초록집 Vol.2020 No.6

뇌졸중 환자의 건측 상지 운동 제한 치료 시 중도 탈락과 치료 의욕의 중요성

최수원,김경미,장순자,김형준,김승수,손미옥,오선영,유연환,서지현 대한재활의학회 2008 Annals of Rehabilitation Medicine Vol.32 No.1

Objective: To assess the effect of motivation for treatment and to find out causes of dropping out from treatment in performing the constraint-induced movement therapy (CIMT). Method: Forty six stroke patients were treated with CIMT for 2 weeks. Prior to and after treatment, Fugl-Meyer motor assessment (FMA), Wolf motor function test (WMFT), box and block test (BBT), and 9 hole peg test, motor activity log (MAL) were performed, and for the evaluation of treatment motivation, motivation score (MS) was assessed in 24 patients. Results: After 2 weeks of CIMT treatment, the mean value of FMA increased by 15.1%, WMFT by 19.5%, BBT by 35.8%, the time of 9 hole peg test decreased by 20.2%, and the “How well” sub-score of the increased MAL was 59.6% (p<0.05). Larger improvement of FMA score was observed in patients with high MS (p<0.05). Twelve out of 46 patients were dropped, 5 patients (18.5%) among 27 right side hemiplegic patients and 7 patients (38.9%) of 19 left side hemiplegic patients gave up the treatment in the middle, and the MS score of the quitted patients (35.3 point) was lower than that of patients who did not quit (40.5 point) (p<0.05). Conclusion: After 2 weeks of CIMT treatment, larger improvement of movement capacity was observed in patients with high motivation. Among patients with low treatment motivation and old age, many patients were dropped out during CIMT. Objective: To assess the effect of motivation for treatment and to find out causes of dropping out from treatment in performing the constraint-induced movement therapy (CIMT). Method: Forty six stroke patients were treated with CIMT for 2 weeks. Prior to and after treatment, Fugl-Meyer motor assessment (FMA), Wolf motor function test (WMFT), box and block test (BBT), and 9 hole peg test, motor activity log (MAL) were performed, and for the evaluation of treatment motivation, motivation score (MS) was assessed in 24 patients. Results: After 2 weeks of CIMT treatment, the mean value of FMA increased by 15.1%, WMFT by 19.5%, BBT by 35.8%, the time of 9 hole peg test decreased by 20.2%, and the “How well” sub-score of the increased MAL was 59.6% (p<0.05). Larger improvement of FMA score was observed in patients with high MS (p<0.05). Twelve out of 46 patients were dropped, 5 patients (18.5%) among 27 right side hemiplegic patients and 7 patients (38.9%) of 19 left side hemiplegic patients gave up the treatment in the middle, and the MS score of the quitted patients (35.3 point) was lower than that of patients who did not quit (40.5 point) (p<0.05). Conclusion: After 2 weeks of CIMT treatment, larger improvement of movement capacity was observed in patients with high motivation. Among patients with low treatment motivation and old age, many patients were dropped out during CIMT.

Estimating Wildfire Fuel Load of Coarse Woody Debris using National Forest Inventory Data in South Korea

최수원,이정열,한승현,김성준,손요환 한국기후변화학회 2015 한국기후변화학회지 Vol.6 No.3

This study presents an estimate of on-site surface fuel loadings composed of coarse woody debris (CWD) using 5th National Forest Inventory (NFI) data in South Korea. We classified CWD data into forest type, region and decay class, and used conversion factors by decay class and tonne of oil equivalent developed in the country. In 2010, the total wildfire fuel load of CWD was estimated as 8.9 million TOE; those of coniferous, deciduous and mixed forests were 3.5 million TOE, 2.8 million TOE and 2.6 million TOE, respectively. Gangwon Province had the highest wildfire fuel load of CWD (2.3 million TOE), whereas Seoul exhibited the lowest wildfire fuel load of CWD (0.02 million TOE). Wildfire fuel loads of CWD were estimated as 2.9 million TOE, 1.9 million TOE, 2.4 million TOE and 1.7 million TOE for decay classes I, II, III and IV, respectively. The total wildfire fuel load of CWD corresponded to the calorific value of 8.2 million tons crude oil, 2.46% of that of living trees. Proportionate to the growing stock, total wildfire fuel load of CWD was in a broad distinction by region, while its TOE ha-1 was not. This implies that there is no need to establish different guidelines by region for management of CWD. The results of this work provide a baseline study for scientific policy guidelines on preventing wildfires by proposing CWD as wildfire fuel load.

IRE INSULATION PLAN 작성

최수원,김호은,손영택 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6

Fire Insulation Plan 은 선박의 모든 Bulkhead 와 Deck 에 대하여 각 구획의 성격에 따라 Fire Insulation 의 요구치를 정의 해 놓은 도면이다. 특히, 여객선에 있어서 승객구역이 넓고 안전에 대한 중요성으로 인하여 일반 상선에 비하여 Fire Insulation 이 차지하는 중량과 비용이 크고, 초기 계약단계에서 추정이 어려운 문제가 있다. 더구나 여객선의 고급화, 대형화 추세에 따라 선실구역이 복잡, 세분화 되어가면서 실제 도면 작성에 많은 시간과 비용이 소요되고 있으며, 자칫 도면 검토단계에서 발견되지 않는 휴먼에러로 인하여 생산에 미치는 영향과 위험에 노출되어 있다. 이에 본 논문에서는 가급적 휴먼에러를 배제하고 초기 계약단계에 중량과 비용 추정에 대한 검토를 목적으로 NAPA 를 이용한 도면 작성하는 방법과 그 응용 가능성을 검토하였으며, 향후 개발방향에 대하여 제시하였다.

뇌손상 환자의 운전을 위한 인지 지각 능력 평가 도구의 적용-예비연구-

최수원,장순자,박시운,이종태,박옥태 대한재활의학회 2008 Annals of Rehabilitation Medicine Vol.32 No.3

Objective: To evaluate the utility of Cognitive Perceptual Assessment for Driving (CPAD) through the on-road test in predicting the actual road driving skills in brain injured patients. Method: 25 brain injured patients with actual driving experience before the occurrence of diseases participated in the handicapped driving adaptation training program of our hospital as the subjects of the study, and one round of CPAD and on-road test were performed. CPAD evaluations and on-road tests for all patients were evaluated by the same therapist. Results: 11 patients passed the CPAD and all of them passed the on-road test. 3 patients failed from CPAD and they turned out to be failed at the on-road test. The mean CPAD score of the on-road test passed group was 53.6 which was significantly different from the mean 43.6 CPAD score acquired by the on-road test failed group by showing a significant difference between two groups (p<0.05). Among the 11 patients who received the borderline CPAD score, 9 patients passed the on-road test. Conclusion: CPAD is considered to be useful in predicting the actual road driving skills of brain injured patients who previously had driving experiences before the occurrence of the diseases. Objective: To evaluate the utility of Cognitive Perceptual Assessment for Driving (CPAD) through the on-road test in predicting the actual road driving skills in brain injured patients. Method: 25 brain injured patients with actual driving experience before the occurrence of diseases participated in the handicapped driving adaptation training program of our hospital as the subjects of the study, and one round of CPAD and on-road test were performed. CPAD evaluations and on-road tests for all patients were evaluated by the same therapist. Results: 11 patients passed the CPAD and all of them passed the on-road test. 3 patients failed from CPAD and they turned out to be failed at the on-road test. The mean CPAD score of the on-road test passed group was 53.6 which was significantly different from the mean 43.6 CPAD score acquired by the on-road test failed group by showing a significant difference between two groups (p<0.05). Among the 11 patients who received the borderline CPAD score, 9 patients passed the on-road test. Conclusion: CPAD is considered to be useful in predicting the actual road driving skills of brain injured patients who previously had driving experiences before the occurrence of the diseases.

P/i Interfacial Engineering in Semi-transparent Silicon Thin Film Solar Cells for Fabrication at a Low Temperature of 150°C

최수원,양조화,박재호,송풍근,강동원,권정대 한국진공학회 2019 한국진공학회 학술발표회초록집 Vol.2019 No.8

센서를 이용한 실시간 시설물 안전관리 개선에 대한 사례연구

최수원,윤유상,임수상,박용복,서상욱,Choi, Suwon,Yoon, Yousang,Lim, Susang,Park, Yongbok,Suh, Sangwook 한국건설관리학회 2020 한국건설관리학회 논문집 Vol.21 No.5

현재 국내 시설물 안전관리는 현장 중심의 안전점검으로 실시되고 있으나, 시설물에 따라 현장접근의 어려움이 있으며, 지나치게 인력에 의존하고 있어 인명사고 발생 및 점검비용과 시간이 많이 들고 있다. 이에 시설물 상시 안전성 확보를 위하여 센서기반의 안전관리의 필요성들이 제기되고 있으며, 센서 안전관리에 대한 다양한 연구들이 이루어지고 있으나, 실용성 검증에 대한 연구는 아직 미흡한 실정이다. 따라서, 본 연구에서는 국내외 연구들에 대한 분석을 통해 개선점을 제시하였고, H시 센서 안전관리 프로세스를 분석하여 센서부착 위치 및 임계치 설정에 대한 추가 프로세스를 도출하였으며, 센서 데이터 계측 값을 통하여 센서 안전관리의 실용성 검증을 실시하였다. 향후 본 연구에서 제시한 추가 프로세스에 대한 명확한 기준 및 지속적인 실용성 검증을 실시한다면, 센서기반의 효율적인 시설물 안전관리를 실시할 수 있을 것으로 기대된다. Presently, safety management of facilities is conducted as a site-oriented safety inspection, but depending on the facilities, there are difficulties in access to the site, and the cost and time of inspection are inefficient due to excessive reliance on human resources. Therefore, the necessity of sensor-based safety management is being raised to ensure the safety of the facility at all times, and various studies on sensor safety management are being conducted, but the research on verification of practicality is still insufficient. Therefore, the improvement points were presented through analysis of domestic and international studies, and additional processes for setting sensor attachment location and threshold were derived by analyzing the H city sensor safety management process, and practicality of sensor safety management was verified through sensor data measurement values. It is expected that efficient, sensor-based facility safety management will be possible if clear criteria and ongoing practicality verification for the additional processes presented in this study should be carried out in the future.

PWR의 증기발생기 교체시 경제성을 고려한 작업자 피복선량 저감화 방안 제시

최수원,신상화,황주호 한국방사성폐기물학회 2010 한국방사성폐기물학회 학술논문요약집 Vol.8 No.1

뇌손상 환자의 야간뇨에 대한 경구 데스모프레신의 효과 및 안전성

최수원,송원우,김완호,김은주,김종훈,양호철,김한나 대한재활의학회 2008 Annals of Rehabilitation Medicine Vol.32 No.3

Objective: To assess the effect of oral desmopressin administration for nocturia and sleeping in brain injured patients and to confirm its safety.Method: 20 brain injured patients waking up more than twice a night for urination during sleeping have been subjected to take 0.1 mg of desmopressin at 9 p.m. everyday for 30 days. To analyze the effect of the drug before and after its administration, the frequency of patient's awakening for urination, duration of time to first urination after sleeping, total urination volume during sleeping and Pittsburgh sleep quality index (PSQI) were evaluated. All newly found symptoms one month after taking the medication were recorded to confirm the safety of the drug. Results: After taking the medication, the mean urination frequency of 20 patients was reduced from 2.4 to 1.4, the mean duration of time to the first urination after sleeping was increased from 3.4 hours to 4.9 hours (p<0.01). The mean PSQI score of 20 patients was decreased from 9.7 to 4.8 (p<0.01). 2 patients had side effects (hyponatremia, headache).Conclusion: The oral administration of desmopressin was relatively safe and effective on brain injured patients with nocturia. Objective: To assess the effect of oral desmopressin administration for nocturia and sleeping in brain injured patients and to confirm its safety.Method: 20 brain injured patients waking up more than twice a night for urination during sleeping have been subjected to take 0.1 mg of desmopressin at 9 p.m. everyday for 30 days. To analyze the effect of the drug before and after its administration, the frequency of patient's awakening for urination, duration of time to first urination after sleeping, total urination volume during sleeping and Pittsburgh sleep quality index (PSQI) were evaluated. All newly found symptoms one month after taking the medication were recorded to confirm the safety of the drug. Results: After taking the medication, the mean urination frequency of 20 patients was reduced from 2.4 to 1.4, the mean duration of time to the first urination after sleeping was increased from 3.4 hours to 4.9 hours (p<0.01). The mean PSQI score of 20 patients was decreased from 9.7 to 4.8 (p<0.01). 2 patients had side effects (hyponatremia, headache).Conclusion: The oral administration of desmopressin was relatively safe and effective on brain injured patients with nocturia.

P/i interfacial engineering in semi-transparent silicon thin film solar cells for fabrication at a low temperature of 150 °C

최수원,양조화,박재호,한세진,송풍근,강동원,권정대 한국물리학회 2019 Current Applied Physics Vol.19 No.10

In this study, we aimed to develop semitransparent solar cells (STSCs) using hydrogenated amorphous silicon (a- Si:H) at a low temperature of 150 °C to support the fabrication of flexible solar modules, applicable in buildingintegrated photovoltaics (BIPV). To compensate for the presumable loss of device performance at such a low processing temperature, careful control of the p/i interface is proposed. We fabricated buffer layers with hydrogen (H2)/silane (SiH4) gas flow ratios (R) ranging from 4 to 16 (R4–R16) to investigate their characteristics and incorporate them at the p/i interface by considering energy band matching. By employing this buffer, the power conversion efficiency (PCE) of a STSC was improved from 4.83% to 5.57% which is the best record in a- Si:H STSCs processed at a low temperature of 150 °C. This p/i interfacial buffer can support the realization of flexible a-Si:H-based BIPV systems using plastic- or polymer-based substrates.