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요각통으로 입원한 요추부 후만곡 환자 1례에 대한 증례보고
권혁준,김주원,류기준,김호준,이명종,Kwon, Hyeok-Joon,Kim, Joo-Won,Ryu, Ki-Jun,Kim, Ho-Jun,Lee, Myeong-Jong 척추신경추나의학회 2009 척추신경추나의학회지 Vol.4 No.2
Objectives : We already know the importance of stability and flexibility on the vertebra. It is important to keep the lumbar lordosis for stability and flexibility. We hope to reduce lower back pain and low extremity pain by changing the angle of the Lumbar Kyphosis through conservative treatment. We have evaluated the effect of conservative treatment with Saamchimbeop Pejeonggyeok by experimenting one patient suffering from Lumbar Kyphosis with lower back pain and low extremity pain. Methods : One patients were diagnosed as Lumbar Kyphosis through X-ray examination. We used conservative treatment, especially Pejeonggyeok Treatment to the patients and measured NRS((Numerical Rating Scale), rating scale for low back pain, low extremity pain and SLR(Straight Leg Raising) test and walking time in whole term of admission, and we also measured flexion, extension angle and lumbar kyphosis using lumbar x-ray lateral view after diganosing by Lumbar Kyphosis. Results and Conclusions : After treating conservative therapy, We figured out that the patient were on the mend, and we found out the angle change in flexion, extension and lumbar Kyphosis. These results suggest that Pejeonggyeok Treatment were effective to improved Lumbar Kyphosis and reduced the low back pain.
권혁준(Hyeok-Jun Kwon),옥승호(Seung-Ho Ok) 한국정보기술학회 2022 한국정보기술학회논문지 Vol.20 No.11
In this paper, we propose a lightweight identity recognition network combining ArcFace, a loss function with robust characteristics in the field of face recognition, and ResNet-18. In this paper, ResNet-18 is modified to a single-channel-based network to reduce the computational amount of the ResNet-18 network. And to compensate for the network performance degradation due to the decrease in the number of channels, ArcFace, which uses an angle margin-based loss function, was combined with a single-channel-based ResNet-18 network to compensate for the network performance degradation. The proposed network performed training and inference with 10,056 experimental data sets consisting of face photos of 33 people. As a result of the experiment, it was confirmed that the proposed ArcFace-based lightweight ResNet-18 improved processing speed by about 1.3 times compared to the existing ResNet-18. In addition, an inference accuracy of 96.9%, similar to that of the existing network ResNet-18, which is 97.6%, was derived.
인공신경망과 대기부식환경 모니터링 데이터를 이용한 항공기 세척주기 결정 알고리즘
권혁준 ( Hyeok-jun Kwon ),이두열 ( Dooyoul Lee ) 한국부식방식학회 2023 Corrosion Science and Technology Vol.22 No.5
Aircraft washing is performed periodically for corrosion control. Currently, the aircraft washing interval is qualitatively set according to the geographical conditions of each base. We developed a washing interval determination algorithm based on atmospheric corrosion environment monitoring data at the Republic of Korea Air Force (ROKAF) bases and United States Air Force (USAF) bases to determine the optimal interval. The main factors of the washing interval decision algorithm were identified through hierarchical clustering, sensitivity analysis, and analysis of variance, and criteria were derived. To improve the classification accuracy, we developed a washing interval decision model based on an artificial neural network (ANN). The ANN model was calibrated and validated using the atmospheric corrosion environment monitoring data and washing intervals of the USAF bases. The new algorithm returned a three-level washing interval, depending on the corrosion rate of steel and the results of the ANN model. A new base-specific aircraft washing interval was proposed by inputting the atmospheric corrosion environment monitoring results of the ROKAF bases into the algorithm.
권혁준 ( Hyeok Jun Kwon ),이수정 ( Soo Jung Lee ),서종한 ( Jong Han Sea ) 대한범죄학회 2020 한국범죄학 Vol.14 No.3
본 연구는 사이코패스의 하위유형을 과학적인 방식으로 분류하고 비교문화적인 관점에서 한국과 영국 두 나라의 사이코패스 특성에 대한 차이를 탐색하기 위해 실시된 연구이다. 사이코패스 성향은 전 세계에서 널리 사용되고 있는 PCL-R을 통해 측정되었으며 많은 연구에서 제시하고 있는 절단점인 총점 25점을 기준으로 했다. 결과적으로 25점 이상의 점수를 나타낸 한국의 범죄자 315명과 영국의 범죄자 205명을 대상으로 분석했다. 분석결과 잠재프로파일분석과 잠재계층분석을 통해 두 나라의 사이코패스 하위유형을 분류하였으며 모델 적합도에 따라 사이코패스의 3요인 모형을 최종모형으로 채택했다. 각 유형에서 가장 높은 점수를 나타낸 PCL-R의 영역에 따라 대인관계, 정서성, 생활양식의 3개 유형으로 분류했으며 대인관계 유형은 한국의 경우 57(18.1%)명, 영국의 경우 35(17.1%)명이 속하며 정서성 유형은 한국 222(70.5%)명, 영국 129(62.9%)명, 생활양식 영역은 한국 36(11.4%)명, 영국 41(20.0%)로 두 나라 모두 정서성 특성이 가장 높은 사이코패스가 가장 많았다. 구체적인 항목은 모든 유형에서 한국이 영국에 비해 피상적 매력, 과도한 자존감, 과도한 거짓말, 기생적 생활방식, 충동성이 더 높았다. 본 연구는 국내의 사이코패스의 하위유형을 과학적 방식을 통해 분류하고, 비교문화적인 연구를 통해 한국에서 특히 두드러지게 나타나는 사이코패스의 특성을 탐색하여 관리와 치료에 대한 시사점을 제안했다. Current study was conducted to classify subtypes of psychopaths in a scientific way and to explore differences between psychopathy of Korea and the United Kingdom from a cross cultural point of view. Psychopathy was measured through PCL-R, which is widely used around the world, and analyzed 315 Korean offenders and 205 British offenders who scored more than 25 points. According to the analysis results, the psychopath subtype of the two countries was classified through latnet profile analysis and latent analysis, and the three class of psychopath subtypes were adopted as the final model according to model fit indices. According to the facet of PCL-R, the three types are devided into interpersonal, affective, life style class. Interpersonal type includes 57 offenders (18.1%) in Korea, 35 (17.1%) in the UK, affective type includes 222 (70.5%) in Korea, 129 (62.9%) in the UK, and life style type includes 36 (11.4%) in Korea, 41% (20.0%) in the UK. Specific PCL-R items showed that in all types, Korea had higher superficial attractiveness, excessive self-esteem, excessive lies, parasitic lifestyles and impulsivity than Britain. Current study classified the subtypes of psychopath in the country through scientific methods, and explored the characteristics of psychopath that are particularly prominent in Korea through cross cultural studies, suggesting implications for management and treatment.
도인(桃仁)이 중대뇌동맥 폐색 유발 흰쥐의 근육형태 변화와 혈관신생에 미치는 영향
권혁준 ( Hyeok Joon Kwon ),소갑석 ( Kab Seog Soh ),김호준 ( Ho Jun Kim ),이명종 ( Myeong Jong Lee ) 한방재활의학과학회 2009 한방재활의학과학회지 Vol.19 No.1
Objectives: This study was performed to investigate the effects of Semen Persicae(SP) on muscle type change and vascularization effect by measuring expression of Myosin heavy chain (MHC) and Vascular endothelial growth factor (VEGF) protein in the Middle cerebral artery occlusion(MCAo) rats. Methods: The middle cerebral artery was occluded, SP extraction was administrated for 4 days. The effects of SP on muscle type change and vascularization were measured. Results: 1. VEGF protein expressions in the Semen Persicae oral administration group of MCAo group were increased compared to the control group 2. There were no significant difference between the Semen Persicae oral administration of MCAo group and the control group in MHC isoform (Type l, Type lla) expression change. Conclusions: The present study demonstrates the effect of Semen Persicae in the vascularizing after ischemia, but has no significant effect n musle type change and the improvement of musle atrophy.
요추 추간판 탈출증 환자의 보존적 치료 후 변화된 자기공명영상에 따른 임상적 고찰
권혁준 ( Hyeok Joon Kwon ),정해찬 ( Hae Chan Jeong ),김호준 ( Ho Jun Kim ),박영회 ( Young Hoi Park ),금동호 ( Dong Ho Keum ),이명종 ( Myeong Jong Lee ) 한방재활의학과학회 2009 한방재활의학과학회지 Vol.19 No.3
Objectives: To analyze the therapeutic outcomes of back pain modalities in patients with disc herniation according to the change of Magnetic Resonanse Imaging(MRI) whom were treated with herbal medicine, chuna, acupuncture, bee-venom acupuncture. Methods: Clinical outcomes of 35 patients diagnosed with lumbar disc herniation by MRI examination, treated conservatively, were analyzed according to MRI follow-up change. Patients underwent MRI examaintion at baseline and after 24th week of treatment. Patients are divided into three groups; improved, unchanged, worsened. 35 patients with lumbar disc herniation were treated with chuna therapy, acupuncture, bee-venom acupuncture once a week and took herbal medicine after a meal two times daily. The patients` clinical outcomes were assessed at baseline, 12th week, 24th week by Visual analogue scale(VAS), Oswestry disability index(ODI). Results: 1. MRI follow-up exams on regression of disc herniation resulted on 42.86% of cases by conservative treatment. 2. VAS(low back pain and sciatica) and ODI of disability of daily activities showed significant decrease in "improved" and "unchanged" groups compared to "worsened" group(P<0.05). 3. VAS(low back pain and sciatica) and ODI change after treatment did not show any relationship with MRI follow-up change(P<0.05). Conclusions: This study suggests that "improved" and "unchanged" groups compared to "worsened" group on MRI follow-up in patients with lumbar disc herniation were more effective when treated with herbal medicine, chuna therapy, acupuncture, bee-venom acupuncture. MRI follow-up change does not affect clinical changes in patients with lumbar disc herniation.