• Title/Summary/Keyword: proximal methods

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An Approach to Implementing Distributed Optimal Power Flow (최적조류계산의 분산처리기법에 관한 연구)

  • Kim, Ho-Woong;Kim, Bal-Ho;Kim, Jung-Hoon
    • Proceedings of the KIEE Conference
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    • 1997.11a
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    • pp.182-186
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    • 1997
  • This paper presents a mathematical approach to implementing distributed optimal power flow (OPF), wherein a regional decomposition technique is adopted to parallelize the OPF. Three mathematical decomposition coordination methods are introduced firs to implement the proposed distributed scheme: the Auxiliary Problem Principle (APP), the Predictor-Corrector Proximal Multiplier Method (PCPM), and the Alternating Direction Method (ADM). Then two alternative schemes for modeling distributed OPF are introduced; the Dummy Generator-Dummy Generator (DGDG) scheme and Dummy Generator-Dummy Load (DGDL) scheme. We present the mathematical analyses of the proposed approach, and demonstrate the approach on several test, systems, including IEEE Reliability Test Systems and parts of the ERCOT (Electric Reliability Council of Texas) system.

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Bunionette Deformity (소건막류)

  • Kim, Yoon-Chung;Ahn, Jae Hoon
    • Journal of Korean Foot and Ankle Society
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    • v.17 no.1
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    • pp.1-10
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    • 2013
  • The bunionette, or a 'tailor's bunion', is a lateral bony prominence of the fifth metatarsal head. A bony deformity itself rarely causes symptom but if a painful inflammation of the overlying soft tissue is accompanied, it needs treatment. Conservative care using a shoe modification, padding, or orthosis is effective in most cases. Surgical management is indicated when the conservative methods have failed to improve symptoms, and the techniques include exostectomy, metatarsal osteotomies (distal, diaphyseal, or proximal), metatarsal head resection or fifth ray resection. We reviewed the etiology, clinical features, radiographic classification, nonoperative and operative treatments of the bunionette.

Study of the Center of Gravity in the Human Body and each Segment (인체 중심과 분절 중심에 대한 연구)

  • Chung Hyung-Kuk;Bae Sung-Soo
    • The Journal of Korean Physical Therapy
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    • v.5 no.1
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    • pp.61-69
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    • 1993
  • It was performed to encourage for Physical Therapist to apply the theory of center of the human body and segments in clinical situations. This study was investigated literarily on center of the human body and segments. Methods which search for the center-2 types, that is, method using reaction broad and segmental method-was suggested. The center location difference of gravity in human body depends on individual character. Generally, the center location is in kent of 2nd sacrum, that is, at $55\%$ of height from foot. The center of each segment is on 'link'. In the first place we must how the weight of segment we can search for the center easily. Mean segment coater location of extremities is at $42.33\%$ from each proximal end, and mean center of head and trunk lies at $45\%$.

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Round Acupuncture for the Treatment of Recurrent Carpal Tunnel Syndrome

  • Kim, Ju-ran;Lee, Yun Kyu;Lee, Hyun-Jong;Kim, Jae Soo
    • Journal of Pharmacopuncture
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    • v.23 no.1
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    • pp.37-41
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    • 2020
  • Objectives: Round Acupuncture having blunt end has developed from acupotomy. This case report is to find out that Round Acupuncture is effective in treating patients with recurrent carpal tunnel syndrome (CTS), which has not improved by steroid injection or acupotomy. Methods: Round Acupuncture was inserted into the distal fibers of transverse carpal ligament and released toward the proximal fibers. Treatment was performed three times in total. T ingling, numbn ess, night pain and swelling sensation were assessed, and provocative maneuvers were also used. Results: After treat ment, all symptoms completely disappeared and the patient had no recurrence until 3 months after treatment. Conclusion: Round Acupuncture co uld be an effective treatment for recurrent CTS.

An Efficient Implementation of Optimal Power Flow using the Alternating Direction Method (Alternating Direction Method를 이용한 최적조류계산의 분산처리)

  • Kim, Ho-Woong;Park, Marn-Kuen;Kim, Bal-Ho
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.48 no.11
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    • pp.1424-1428
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    • 1999
  • This paper presents a mathematical decomposition coordination method to implementing the distributed optimal power flow (OPF), wherein a regional decomposition technique is adopted to parallelize the OPT. The proposed approach is based on the Alternating Direction Method (ADM), a variant of the conventional Augmented Lagrangian approach, and makes it possible the independent regional AC-OPF for each control area while the global optimum for the entire system is assured. This paper is an extension of our previous work based on the auxiliary problem principle (APP). The proposed approach in this paper is a completely new one, however, in that ADM is based on the Proximal Point Algorithm which has long been recognized as one of the attractive methods for convex programming and min-max-convex-concave programming. The proposed method was demonstrated with IEEE 50-Bus system.

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The Coordination and Contribution of Body Segments during Functioning (기능에서 신체분절의 협응과 기여)

  • Chae, Jung-Byung
    • PNF and Movement
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    • v.15 no.1
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    • pp.13-25
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    • 2017
  • Purpose: This study investigated the coordination and contribution of body segments during functioning. Methods: The relevant literature related to body segments and function were reviewed. Results: Efficient control of function is considered with regard to a participant's ability to perform a sequence of movements in body segments, which progresses from the head to the arm, trunk, pelvis, and leg segments. Each segment performs a specific role, which environment explorer using visual information for the head, reaching and grasping for the arms, a stabilizer for the trunk, and the distribution of COM in the pelvis and leg. Conclusion: During any of the movements, the momentum generated by the proximal segments is transferred to the adjacent distal segments in an appropriate sequence. In assessing function for clinical intervention strategies, the segment coordination, segment sequence, transfer of the center of body mass, asymmetrical ratio, muscle activity, and compensatory strategies should be considered.

Needling Depth of Five-Phase Acupoints and Depth of Meridian Qi (오수혈 자침 깊이와 맥기의 천심)

  • Lee, Seoyoung;Lee, In-Seon;Chae, Younbyoung
    • Korean Journal of Acupuncture
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    • v.39 no.2
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    • pp.63-67
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    • 2022
  • Objectives : The purpose of this study was to investigate the needling depth of five-phase acupoints and discuss the association with the depth of meridian qi. Methods : DongUiBoGam was used to determine the depth of five-phase acupoints. The depth of needling at 60 five-phase acupoints was compared between well, spring, stream, river, and sea acupoints. Results : The proximal part of the extremities had deeper needling depth than the distal part of the extremities. The targeted deqi sensation can be related to the needling depth. Conclusions : The depth of the meridian qi is related to the distinct patterns of needling depth of five-phase acupoints.

Minimally invasive distal biceps tendon repair: a case series

  • Paul Jarrett;Anna-Lisa Baker
    • Clinics in Shoulder and Elbow
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    • v.26 no.3
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    • pp.222-230
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    • 2023
  • Background: Distal biceps tendon repairs are commonly performed using open techniques. A minimally invasive distal biceps tendon repair technique using a speculum and hooded endoscope was developed to improve visualization, reduce soft-tissue dissection, and minimize complications. This paper describes the technique and reports the outcomes of 75 minimally invasive distal biceps tendon repairs. Methods: The operation reports and outcomes of 75 patients who underwent distal biceps tendon repair using this technique between 2011 and 2021 were retrospectively reviewed. Results: Median time to follow-up was 12 months (interquartile range [IQR], 6-56 months). Primary outcomes were function as measured by the Disabilities of Arm, Shoulder and Hand Score (DASH) questionnaire, and rate of complications. Median DASH score was 1.7 of 100 (IQR, 0-6.8). There were 2 of 75 (2.7%) re-ruptures of the distal tendon. There were no cases of vascular injury, proximal radius fracture, or posterior interosseous nerve, median, or ulnar nerve palsy. Conclusions: In this series, minimally invasive distal biceps repair was safe and effective with a low rate of major complications. Recovery of function, as indicated by low DASH scores, was satisfactory, and inconvenience during recovery was minimized. Level of evidence: IV.

Treatment of Forearm Deformity caused by Hereditary Osteochondromatosis using Free Vascularized Fibular Epiphyseal Transplantation (생비골 성장판 이식술을 이용한 선천성 다발성 골연골증에서 전완부 변형의 치료)

  • Han, Chung-Soo;Yoo, Myung-Chul;Chung, Duke-Whan;Han, Hyun-Soo;Han, Soo-Hong
    • The Journal of the Korean bone and joint tumor society
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    • v.1 no.1
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    • pp.60-67
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    • 1995
  • It is difficult to manage the growing deformity of forearm bone caused by hereditary osteochondromatosis in children, because deformity and discrepancy of limb length is progressive. The are many treatment methods of these problems including excisio of osteochondroma, lengthening of ulna, shortening of radius, corrective osteotomy with or without lengthening apparatus. Among many treatment methods, we tried free vascularized epiphyseal transplantation with the proximal fibular epiphysis in 3 patients of hereditary osteochondromatosis for inducement of continuous bone growth and deformity correction. The average duration of follow up was 7 years and 1 month, the shortest duration being to 4 years and 5 months and the longest 10 years and 8 months. Serial radiologic and clinical evaluation were carried out during follow up and there were satisfactory length gain, deformity correction and improvement of adjacent joint motion in 2 cases. According to our follow up evaluation, free vascularized epiphyseal transplantation is valuable procedure in forearm deformity of hereditary osteochondromatosis although it needs skillful and experienced operative technique.

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Gait Training Strategy by CPG in PNF with Brain Injured Patients (고유수용성 신경촉진법에서 CPG를 이용한 뇌손상자 보행훈련전략)

  • Bae Sung-soo
    • The Journal of Korean Physical Therapy
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    • v.17 no.1
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    • pp.108-122
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    • 2005
  • The gait training strategy in very important things for central nervous system(CNS) injury patients. There are many method and strategy for regaining of the gait who had CNS injury. A human being has central pattern generator(CPG) is spinal CPG for locomotion. It is a neural network which make the cyclical patterns and rhythmical activities for walking. Sensory input from loading and hip position is essential for CPG stimulation that makes the central neural rhythm and pattern generating structure. From sensory input, the proprioceptive information facilitate proximal muscles that controlled in voluntarily from cortical level and visual and / or acoustical information facilitate distal muscles that controlled voluntarily from subcortical level. Gait training method can classify that is functional level and structural level. Functional level includ level surface gait, going up and down the stair. It is important to facilitate a guide tempo in order to activate the central pattern generators. During the functional test or functional activities, can point out the poor period in gait that have to be facilitate in structural level. There are many access methods with patient position and potentiality. The methods are using of rhythmic initiation, replication and combination of isotonic with standing position. Clinically using it on weight transfer onto the stance leg, loading response, loading response and pre-swing, terminal stance, up and downwards stairs.

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