Short‑Term Load Forecasting Based on Deep Neural Networks Using LSTM Layer

Bo‑Sung Kwon,Rae‑Jun Park,Kyung‑Bin Song 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4

Short-term load forecasting (STLF) is essential for power system operation. STLF based on deep neural network using LSTM layer is proposed. In order to apply the forecasting method to STLF, the input features are separated into historical and prediction data. Historical data are input to long short-term memory (LSTM) layer to model the relationships between past observed data. The outputs of the LSTM layer are incorporated with outputs of fully-connected layer in which prediction data, for instance weather information for forecasting day, are input. The optimal parameters of the proposed forecasting method are selected following several experiment. The proposed method is expected to contribute to stable power system operation by providing a precise load forecasting.

한의약 컨텐츠를 가미한 강원도 리조트형 웰니스 프로그램 제안

유준상, 권보인, 이재형 상지대학교 한의학연구소 2023 尙志韓醫論文集 Vol.11 No.1

Objectives: As interest in wellness tourism is increasing in Korea, we sought to propose a program with Korean Medicine Contents for eight resorts in Gangwon-do, which has forests and marine resources. Methods: The authors visited eight designated resorts in Gangwon-do, observed the facilities, and interviewed the people in charge. Questions and answers were asked and answered in the form of a questionnaire regarding any deficiencies in the interviews. Afterwards, the contents were analyzed and a Korean Medicine program suitable for each resort was proposed. Results: A total of 17 Korean Medicine Programs were proposed, of which the meditation/yoga program and diet/drink program tailored to each constitution were proposed to be applicable to all 8 resorts. The rest were proposed considering each resort's facilities, environmental characteristics, and main product programs. Conclusions: It appears that the ‘meditation/yoga program’ and ‘constitutional diet and beverage development’ sectors are programs that can be commonly carried out by all facility companies, and for this purpose, the Sasang constitution test and Korean medicine measurement within the resort in Gangwon-do are used to create a program linked to this. In addition, we believe that efforts to improve the program through verification of efficacy will be necessary in the future

소득작물 전후작지 적응 극단기성 벼 ‘중모 1032’

손영보,이종희,조준현,이지윤,오성환,송유천,박동수,박노봉,김상열,여운상,남민희,권영업 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

교합성 골수강내 금속정으로 치료한 대퇴골 골절의 치료

권칠수,안종국,김용욱,김진혁,정병현,성열보,강재철 인제대학교 1995 仁濟醫學 Vol.16 No.4

대퇴골 간부 골절시 교합성 골수강내 금속정을 이용한 견고한 고정은 조기 관절 운동과 조기 체중부하가 가능한 보편적인 수술적 치료방법으로 그 사용이 증가하고 있다. 그리고 최근에는 골수강내 금속정이 대퇴골 간부 골절 뿐만 아니라 대퇴골의 근위부나 원위부에 치우친 골절이나 청소년기의 대퇴골 간부 골절의 치료에도 확대되고 있다. 본 논문은 대퇴골 골절 환자 54례를 대상으로 금속정 삽입술의 적응증의 확대와 그에 수반되는 문제점에 관하여 증례 분석 및 결과를 문헌 고찰과 함께 보고하고자 한다. The rigid internal fixation of femur shaft fracture with intramedullary nailing enables early joint motion and weight bearing. This procedure has been used with wide popularity because it is possible simultaneously to preserve the range of motion and to obtain the bone union. But in the proximal and distal femur fracture, the interlocking screws are too close to the fracture site, the rigid fixation cannot be achieved and when early weight bearing is permitted, failure of the metal is possible. Also, when femur fractures in the adolescence be treated with traction followed by casting, sometimes angular deformity and shortening may develope. These problems have solved to the use by intramedullary nailing. The authors reviewed and analyzed 54 cases of the fractures of femur treated by interlocking nails at Sang-Gye Paik Hospital from August 1989 to July 1992. The results were as follows ; 1.Among the 54 patients, male were 42 and female were 12. 2.The mean time of bone union was 19.3 weeks. 3.The authors usually used the closed locked nailing technique to fix the mid-shaft fracture of femur. In cases such as mid-shaft fracture combined wish proximal or distal femoral fracture, for the stability of fracture and the early mobilization, a reconstruction nail or modified nailing technique was used and an excellent bone union was obtained without any complication. 4.In a mid-shaft fractures of the femur in adolescents or young adult, the authors used interlocking nails of proper length or diameter by cutting-off the distal portion of the nail or by over-reaming of the too narrow medullary canal, and the outcome was favorable.

백서 정중구개봉합 확대후의 CGRP 면역반응 신경섬유의 변화

김보경,박국필,경희문,권오원,성재현 대한치과교정학회 1999 대한치과교정학회지 Vol.29 No.1

측방확대장치에 의한 정중구개봉합부의 확대시 고정력은 구개부의 신경요소들에 변화를 일으키면서 동통을 유발하게 되고 구개봉합부가 확대되고 그것이 유지되는 동안에 기계적 자극에 의한 구개부신경섬유의 반응성에 변화를 일으킬 것으로 생각된다. 본 연구에서는 백서 정중구개봉합부의 CGRP 면역반응 신경섬유의 교정력 적용시간에 따른 형태학적인 반응성, 밀도, 분포변화등을 관찰하고 그와 연관된 CGRP의 기능을 알아보고 자 250gm내외의 Sprague-Dawley 웅성백서 상악전치에 200gm의 치아이개력이 가해지도록 활성화시킨 helical spring을 삽입하여 정상대조군과 장치 장착후 경과시간에 따라 1일, 4일, 7일, 14일 경과군으로 나누어 정중구개봉합부를 확대후 희생시켜 면역조직화학법으로 염색하여 관찰하였다. · 대조군에서 정중구개 봉합붑 결합조직의 CGRP 면역양성 신경섬유는 거의 관찰되지 않았다. · 1일군에서는 대조군에 비해 CGRP 면역반응 신경섬유가 현저한 증가를 보였으며 주로 혈관 주위에 염주알 모양의 가는 신경섬유가 관찰되었다. · 4일군에서는 CGRP 면역반응 신경섬유가 대조군에 비해서는 현저한 증가를 보였으나 1일군에 비해서는 크게 증가하지 않았으며 혈관의 크기가 훨씬 확장되어 관찰되었다. · 7일군에서는 특징적으로 조골양세포가 새로이 형성된 골변연을 따라 줄지어 배열되는 독특한 양상이 관찰되었고 신경섬유의 수는 4일군에 비하여 감소하고 혈관의 직경도 감소되었다. · 14일군에서는 CGRP 면역반응 신경섬유가 7일군과 유사한 분포를 보였으며 확대에 의한 골변연의 불규칙성도 대체로 감소되었다. CGRP 면역반응 신경섬유는 정중구개봉합의 확대시 초기에 일어나는 신경원성 염증반응에 주로 관련되어 증식되는 것으로 생각된다. Midplatal suture expansion is often used for patients having narrow maxillary arch, cleft palate, respiratory handicap with narrow nasal cavity. CGRP has been known as a modulator of pain transmission in central nervous system and a local effector to peripheral tissue causing vasodilation, increase of blood flow, modulation of immune system, regulation of macrophagic function and stimulation of bone formation. To investigate changes of CGRP-immunoreactive nerve fibers in midpalatal suture during the the expansion, immunohistochemical study was performed by using rats. Experimental rats(10weeks, 250gm) were divided into five groups(control, 1, 4, 7, 14 days group (each n=4) and applied orthodontic force (approximately 200gm) to upper anterior incisors. Frozen sections of midpalatal suture area were immunostained by using rabbit antisera. The results were as follows. · The CGRP-immunoreactive nerve fibers were hardly observed in control group. · In 1 day group, the CGRP-immunoreactive nerve fibers were more increased around the vessels than control group. · In 4 days group, the CGRP-immunoreactive nerve fibers were more increased than control group, but not more increased than 1 day group. Vascular diameter was more enlarged. · In 7 days group, expecially, hematoxilin affinity of cells was remarkable and cells were arranged along the bone margin. The CGRP-immunoreactive nerve fibers were more reduced than 4 days group and vascular diameter was also reduced. · In 14 dayds group, the CGRP-immunoreactive nerve fibers were similar to those of 7 days group and the irregularity of bone margin was almost recoverd. In Conclusion, the CGRP-immunoreactive nerve fibers may be related to initial neurogenic inflammatory reaction in expanding mid-palatal suture.

젊은 성인에서 흡연에 의한 상완동맥 내피기능의 부전에 관한 연구

이상철,권영주,방덕원,이선해,이보영,김지욱,김영훈,온영근,현민수,김성구 순천향의학연구소 2002 Journal of Soonchunhyang Medical Science Vol.8 No.1

Background and Objectives : Cigarette smoking is a major factor and the most modifiable risk factor for atherosclerosis. Endothelial dysfunction is an early event in atherosclerosis, before the structural change of the systemic arteries. We hypothesized that endothelial dysfunction might be present in the systemic arteries of young adult smokers and that this might be dose-dependent phenomenon. Therefore, we try to certify that smoking is associated with endothelial dysfunction in healthy young adults without other risk factor of atherosclerosis. Subjects and Methods : we studied noninvasively 29 subjects aged 3 to 4 decades without other risk factor of atherosclerosis, they were composed of the two groups, current smokers(n=15) and nonsmokers(n=14). Smoking history varied from 3 to 20 pack years. Using high-resolution ultrasound, vessel diameter and mean flow rate were measured at rest, during reactive hyperemia(with flow-mediated endothelium-dependent dilation), and after sublingual nitroglycerin(NG-induced endothelium-independent vasodilation). Result : Flow mediated endothelium dependent dilation was observed in the control subjects (9.4±3.44%) but was impaired in the smokers(5.8±2.51%)(p=0.004). NG-induced endothelium independent dilation is no difference in all subjects. Conclusion : Cigarette smoking is associated with endothelial dysfunction in healthy young adults.

거골의 박리성 골연골염

하권익,한성호,양보규,김치홍,김태성 대한스포츠의학회 1995 대한스포츠의학회지 Vol.13 No.1

거골의 박리성 골연골염은 연골과 연골하골이 균열되고 관절 면으로부터 부분적 혹은 전체적으로 분리되는 병변으로 흔치 않은 병변이다. 거골의 박리성 골연골염은 잘 알려져 있음에도 불구하고, 수술적 치료의 결과에 대한 지식은 적은 편이다. 저자들은 1998년 1월부터 1992년 12월까지 만 5년간 16명, 16례의 거골 박리성 골연 골염 환자를 평균 29개월 추시관찰 및 분석하여 다음과 같은 결과를 얻었다. 1) 연령 분포는 최소 15세에서 최장 58세 였으며 평균 30세 였다. 2) 16명의 환자중 남자가 14례 여자가 2례였고 우측 거골이 10례, 좌측 거골이 6례 였다. 3) 외상과 관계있는 환자는 16례중 15례였으며 거골의 내측에 병변이 있는 경우가 10례, 외측이 6례 였으며 양측인 경우는 없었다. 4) 증상 발현후 수술까지의 기간은 최단 3개월에서 최장 7년이 였으며 평균 25.9개월 이었다. 16명 전례에서 동통을 호소하였으며 6명에서 강직 및 불안정성을 각각 호소하였다. 5) Berndt와 Harty에 의한 병변 분류는 stage Ⅰ은 없었으며 stage Ⅱ는 4례, stage Ⅲ가 7례, stage Ⅳ는 5례로 stage Ⅲ이 가장 많았다. 6) 치료는 관절 개방술에 의한 절제술(1례), 절제술과 소파술 및 다발성 천공술(8례), 절제술 및 소파술 (3례), 소파술 및 bone peg(1례), 관절경적 소파술 및 다발성 천공술 (3례) 시행하였으며 치료결과는 O'Farrell 등이 사용한 평가 방법에 의하면 우수 13례 (81%), 양호 2례(12.5%), 불량 1례 (6.5%)였다. Osteochondritis dissecans of the talus is defined as a subchondral bony lesion of small fragment of bone, usually under two centimetres in diameter, with overlying intact articular cartilage. This fragment then becomes separated from its bed and undergoes necrosis. Although the lesion of osteochondritis dissecans of the talus is well known, there is little information in the literature concerning the results of surgical treatment. Sixteen cases of osteochondritis dissecans of the talus, operated on between January 1988 and December 1992, were studied. All were available for follow-up an average 29 months later and clinical analysis were as follows; 1. Age incidence was distributed from 15 years to 58 years (average 28) 2. 16 patients (14 male, 2 female) were examined and followed-up ; in ten the right ankle was involved and six the left ankle. 3. Of the 16 patients, 14 patients were associated with a history of trauma and 10 patients had medial lesions and 6 patients, lateral lesions. 4. The duration of symptom on these cases ranged from 3 months to 7 years, with an average of 25.9 months. All patients complain of pain when using the ankle and 6 patients complain of stiffness of the ankle and sensation of Berndt and Harty, four ankles had a stage Ⅱ lesion, nine had a stage Ⅲ lesion and five had a stage Ⅳ lesion. 6. The methods of treatment were excision (1 case), excision, curettage and drilling (8 cases), excision and curettage (3 cases), curettage with bone pegging (1 case) and arthroscopic curettage and drilling (3 cases). According to O'Farrell grading system which combined subjective with the objective assessment, 13 patients (81%) had good results, 2 patients (12.5%) had fair results, and 1 patient (6.5%) had a poor result.

집적화된 실리콘 압력센서의 출력전압 보상파라미터 추출 및 그 특성

이보나,김건년,박효덕,신상모,이경탁,김찬,권혁채,이상조,박현주 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

An integrated silicon pressure sensor has been designed, fabricated and tested. The signal conditioning circuits were designed to include calibration and temperature compensation of output voltage through trimming of diffusion and ion-implanted resistors. Before trimming of resistors, the compensation parameters such as pressure sensitivity, temperature coefficient of pressure sensitivity, temperature coefficient of piezoresistors and pressure sensitivity of piezoresistors were measured. Then offset voltage, span, and temperature coefficients of offset voltage and span were calibrated by trimming of resistors. The measured output voltage met our design specification and simulation value above room temperature. But, the measured output voltage at -30°C deviated from our design specification and simulation value because the offset voltages were found to vary randomly as a function of temperature.

Papain 유도 호흡기 염증모델에서 인삼패독산(人蔘敗毒散)의 항염증 효과

우연주, 유준상, 이동혁, 서진우, 김주희, 권보인 상지대학교 한의학연구소 2023 尙志韓醫論文集 Vol.11 No.1

Objectives: Insampaedok-san and its main components have been used for treatment of fever, joint pain, cough, headache and pain. Using a respiratory inflammation model, we intend to investigate the anti-inflammatory effect and its mechanism of Insampaedok-san. Methods: We induced the actue respiratory inflammatory mouse model by papain treatment. BALB/C mice (female, 8 weeks old) were divided into three groups as follows: saline control (SC): papain treated group (vehicle): papain and Insampaedok-san (200mg/kg) treated group (n=4). To demonstrate the ani-inflammatory effect of Insampaedok-san water extracts, inflammatory cell infiltration was evaluated in bronchoalveolar lavage fluid (BALF) and nasal lavage fluid (NALF). In addition, immunogloblin (Ig)-E level was measured by using ELISA. Results: Insampaedok-san extracts administration decreased inflammatory cell infiltration in BALF and NALF. Especially, eosinophil infiltration was dramatically reduced. Furthermore, total Ig-E level was diminished in BALF and serum by Insampaedok-san administration. Conclusions: Our findings revealed Insampaedok-san extracts have anti-inflammatory effects by inhibiting inflammatory cell, especially eosinophil infiltration and Ig-E level.

Si Bulk Micromachining을 위한 Wafer Rolling Etching 및 그 특성

김건년,이보나,박효덕,신상모,공경준,장동근,김병철,권혁채,이봉희 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

A wafer rolling etching system for the silicon bulk micromachining has been designed and fabricated. The silicon diaphragms were anisotropically etched in a 24.5 weight percent KOH solution. Compared to the conventional KOH etching systems, pyramidal hillocks, and wave-shaped structures on the etched surfaces were greatly reduced by using this system. After etching for time of 438 minutes, the average etched depth and the etch-rate were measured to be 537μm and 1.22μm/min, respectively. The average etching uniformity of etching depth was 0.87% in 5-inch wafer. Our results showed that the wafer rolling method enhanced etch uniformity and etch rate.