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딥러닝을 활용한 가정 에너지 사용량 데이터로부터 재실자 행동 패턴 식별
고윤담(Yun-Dam Ko),신한솔(Hansol Shin),조성권(Seongkwon Cho),최영식(Youngsik Choi),박철수(Cheol-Soo Park) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
재실자 행동(설정온도, 환기, 조명 조절 등)은 건물 에너지 사용량에 큰 영향을 미치며, 실제 사용량과 시뮬레이션 예측의 차이(Performance gap)를 유발한다. 최근 건물 시뮬레이션 학계는 데이터 기반 재실자 행동 모델을 개발하려는 노력이 활발하다. 재실자 행동 모델 개발을 위해서는 냉방 설정 온도, 냉방 개시 온도, 창문 개폐 등의 데이터 수집이 필요하지만, 이러한 데이터는 사생활 침해, 센서 설치 등의 문제로 수집이 쉽지 않다. 본 연구에서는 가정 전기 사용량 데이터에서 재실자 행동 패턴을 식별하는 딥러닝 기반 방법론을 제안한다. 서울 공동 주택 건물의 한 세대를 대상으로 동적 건물 시뮬레이션 툴인 EnergyPlus로 모델링 하였다. 실내 환경에 따른 3가지 재실자 행동 패턴(냉방 설정 온도[˚C], 냉방 개시 온도[˚C], 실내 CO<sub>2</sub> 농도[ppm]에 따른 창문 개폐)을 건물 에너지 모델과 연동하여 42,000개 샘플을 생성하였다. 생성된 데이터 셋으로 ResNet(Residual network) 모델을 훈련하고 검증하였다. 개발된 ResNet 모델은 시간별 전기 사용량 데이터로부터 재실자 행동 패턴을 충분히 정확히 식별할 수 있음을 보였다(정확도 = 86.5%).
Sciatic Neuropathy after Intramuscular Injection at a Site Remote from the Nerve
윤수인,박지수,고윤담,송대헌,박지혜 대한임상통증학회 2021 Clinical Pain Vol.20 No.1
Sciatic nerve can be injured by various mechanism such as compression, traction during surgery, and direct trauma. This case reports a sciatic neuropathy caused by compression due to hematoma occurring after intramuscular injection in the gluteus medius muscle far from the nerve. In order to avoid occurrence of sciatic neuropathy after buttock injection, the injection was made in the upper outer quadrant of the buttock, but sciatic neuropathy occurred. Sciatic neuropathy can be confused with lumbar radiculopathy, so differential diagnosis is important.
Spinal Accessory Nerve Injury Induced by Manipulation Therapy: A Case Report
윤정로,김용기,고윤담,윤수인,송대헌,정명은 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.5
Spinal accessory nerve (SAN) injury mostly occurs during surgical procedures. SAN injury caused by manipulation therapy has been rarely reported. We present a rare case of SAN injury associated with manipulation therapy showing scapular winging and droopy shoulder. A 42-year-old woman visited our outpatient clinic complaining of pain and limited active range of motion (ROM) in right shoulder and scapular winging after manipulation therapy. Needle electromyography and nerve conduction study suggested SAN injury. Physical therapy (PT) three times a week for 2 weeks were prescribed. After a total of 6 sessions of PT and modality, the patient reported that the pain was gradually relieved during shoulder flexion and abduction with improved active ROM of shoulder. Over the course of 2 months follow-up, the patient reported almost recovered shoulder ROM and strength as before. She did not complain of shoulder pain any more.
김건태,김용기,윤중로,고윤담,정명은 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.2
Objective To determine the optimal stimulation and recording site for infrapatellar branch of saphenous nerve (IPBSN) conduction studies by a cadaveric study, and to confirm that obtained location is practically applicable to healthy adults. Methods Twelve lower limbs from six cadavers were studied. We defined the optimal stimulation site as the point IPBSN exits the sartorius muscle and the distance or ratio were measured on the X- and Y-axis based on the line connecting the medial and lateral poles of the patella. We defined the optimal recording site as the point where the terminal branch met the line connecting inferior pole of patella and tibial tuberosity, and measured the distance from the inferior pole. Also, nerve conduction studies were performed with obtained location in healthy adults. Results In optimal stimulation site, the mean value of X-coordinate was 55.50±6.10 mm, and the ratio of the Y-coordinate to the thigh length was 25.53%±5.40%. The optimal recording site was located 15.92±1.83 mm below the inferior pole of patella. In our sensory nerve conduction studies through this location, mean peak latency was 4.11±0.30 ms and mean amplitude was 4.16±1.49 mV. Conclusion The optimal stimulation site was located 5.0–6.0 cm medial to medial pole of the patella and 25% of thigh length proximal to the X-axis. The optimal recording site was located 1.5–2.0 cm below inferior pole of patella. We have also confirmed that this location is clinically applicable.