한국게슈탈트치료의 연구동향: 학술지 게재 논문을 중심으로

이상하 ( Lee¸ Sangha ) 한국게슈탈트상담심리학회 2013 한국게슈탈트상담연구 Vol.3 No.2

본 연구는 심리치료 및 상담과 관련한 주요 학술지에 게재된 논문을 분석하여 한국게슈탈트치료의 연구동향을 알아보는 데에 그 목적이 있다. 이를 위해 1996년부터 2013년까지 ‘한국심리학회지: 일반’, ‘한국심리학회지: 상담 및 심리치료’, ‘한국심리학회지: 임상’, ‘상담학연구’, ‘한국게슈탈트치료연구’ 등 5개 학술지에 실린 38편의 논문들을 대상으로 연구내용, 연구 주제, 연구대상 등에 초점을 두고 연구동향을 분석하였다. 이를 위한 통계처리는 빈도분석을 사용하였다. 연구내용은 성과연구가 19편으로 가장 많았고 연구주제는 정서관련 주제가 15.5편으로 최빈치를 나타내었다. 연구대상은 성인을 대상으로 한 연구가 9.5편으로 가장 많은 것으로 조사되었다. 이러한 연구결과가 지니는 의미와 시사점 그리고 한국에서의 게슈탈트치료가 발전하기 위한 제언들을 논의하였다. The purpose of this study was to analyze research trends of the Gestalt therapy in Korea. 38 articles published during past-18 years (1996~2013) had been categorized according to publication date and types of journals, research subjects, research contents and research theme. For these research, analysis of frequency had been used. Finding of the present study followed. First, as for the research contents, researches about outcome were most studied. Second, the articles about adults marked the greatest number relative to other subjects. For the research theme, the articles about emotion as a research theme were the most. The implications and suggestions for the development of Gestalt therapy in Korea were discussed.

Detection of Dermis and Fascia on Skin Layers for Liposuction Surgery Robot using Texture and Geometric Information

Sangha Song,Yo Kobayashi,Masakatsu G. Fujie 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10

Despite the fact that liposuction is one of the most common types of cosmetic surgery, it causes skin surface irregularity as a side effect because of the procedure’s lack of systemicity and objectivity in measuring the process of regional suction. To determine a more systematic and quantitative liposuction process, the surgeon requires access to a surgical robotic system for liposuction. The first consideration in such a system, is navigation of subcutaneous fat, especially detection of the dermis and fascia skin layers. Therefore, this paper presents a method for detecting the dermis and fascia in the skin structure using an ultrasound image that could assist the surgeon"s procedure during liposuction. The method proposed in this paper includes the following three steps. 1) Using the Gabor filter bank, extract the texture feature from the ultrasound image. 2) Using a k-means clustering algorithm, extract cluster areas from the texture feature, such that cluster areas contain similar texture features. 3) Detect the dermis and fascia from each cluster’s geometric information as the feature after training a multi-class SVM. Using the proposed algorithm, the performance results for precision and recall for dermis are 96% and 100%, respectively. In the case of fascia, the precision is 71.11% and recall is 86.49%. The proposed algorithm would be useful as the navigation system in the development of a surgical robot for liposuction in the near future.

Hue-saturation-depth Guided Image-based Lidar Upsampling Technique for Ultra-high-resolution and Omnidirectional 3D Scanning

Sangha Oh,Soon-Yong Park 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.5

This paper proposes a lidar upsampling technique to obtain ultra-high resolution and omnidirectional 3D data. Obtaining a large amount of omnidirectional 3D data is expensive because of the cost of sensing and scanning systems. Instead of using expensive commercial scanning systems, we introduce a new type of low-cost 360-degree 3D scanning system to obtain 3D lidar data. The original lidar data from the system is upsampled by using the weighted median filter with novel Hue-Saturation-Depth (HSD) guide image. The proposed upsampling technique consists of two steps. The first step upsampling is performed by using linear interpolation based on pixel distance and edge-area refinement in the interpolated depth map. Thereafter, in order to reduce the saturation effect of a high-contrast RGB color guide image, we propose to add the depth information to the guide image. A novel HSD guide image is generated by replacing the intensity of the RGB image with the scaled-depth from the first-step upsampling. Finally, the second-step upsampling is performed by applying the weighted median filter to the result of the first-step upsampling. In the experiments, we present ultra-high-resolution 3D scanning results and error analysis in complex indoor environments.

Simulation of Light Propagation through Multi-layer Tissue with a Tilted Boundary using a Radial-beam Light-emitting Diode for Liposuction

Sangha Song,Inko Elgezua,Yo Kobayashi,Masakatsu G. Fujie 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10

Skin surface irregularity is the most common problem resulting from liposuction. It is caused by partially tilted internal boundaries between the fat and muscle layers after inappropriate liposuction. From the point of view of biomedical engineering, it is meaningful to simulate the light propagation according to the slope angle of the boundary with a specific light source. Therefore, in this paper, we suggest a method with which to simulate light propagation according to the angle of the boundary, based on Monte Carlo simulation commonly used for light propagation simulation in tissue, using a radial-beam light-emitting diode (LED). We first consider three characteristics of the radial-beam LED in tissue and perform selective transformations for the effects of the slope angle of the boundary in multiple layers. An experiment is then carried out to verify the effectiveness of the simulation we proposed. The coefficient of correlation between the simulation and experimental results is found to be 0.9605. From our results, we conclude that our simulation method is valid for light propagation through a tilted multi-layer tissue using a radial-beam LED.

Severe Headache and Hypertension due to Cerebral Venous Sinus Thrombosis in a Patient With Cervical Spinal Cord Injury: A Case Report

Sangha Cha,Joo-Hyun Kee,Chang-Won Moon,Kang Hee Cho 대한신경손상학회 2022 Korean Journal of Neurotrauma Vol.18 No.2

Autonomic dysreflexia is suspected when patients with spinal cord injury report headaches and hypertension. A 52-year-old man was diagnosed with C5-C6-C7 cervical spinal cord injury, traumatic subdural hemorrhage, intracerebral hemorrhage, and skull fracture. The patient underwent surgery at another hospital. The patient was hospitalized for comprehensive rehabilitation after 7 months. The assessment revealed an American Spinal Cord Injury Association Impairment Scale grade A at the C7 level due to complete spinal cord damage. Evaluation of muscle weakness that occurred after experiencing severe headache and hypertension revealed an intracerebral hemorrhage caused by cerebral venous sinus thrombosis. The patient showed improvement in muscle strength over time and was monitored for warfarin administration. Furthermore, cerebral venous sinus thrombosis should be considered as a differential diagnosis when patients with spinal cord injury who have experienced polytrauma complain of headache and hypertension, as they share clinical symptoms with autonomic dysreflexia. Additional evaluations, such as imaging examinations, should be conducted, as necessary.

ADAPTIVE FDI FOR AUTOMOTIVE ENGINE AIR PATH AND ROBUSTNESS ASSESSMENT UNDER CLOSED-LOOP CONTROL

Sangha, M.S.,Yu, D.L.,Gomm, J.B. The Korean Society of Automotive Engineers 2007 International journal of automotive technology Vol.8 No.5

A new on-line fault detection and isolation(FDI) scheme has been proposed for engines using an adaptive neural network classifier; this paper investigates the robustness of this scheme by evaluating in a wide range of operational modes. The neural classifier is made adaptive to cope with the significant parameter uncertainty, disturbances, and environmental changes. The developed scheme is capable of diagnosing faults in the on-line mode and can be directly implemented in an on-board diagnosis system(hardware). The robustness of the FDI for the closed-loop system with crankshaft speed feedback is investigated by testing it for a wide range of operational modes, including robustness against fixed and sinusoidal throttle angle inputs, change in load, change in an engine parameter, and all changes occurring simultaneously. The evaluations are performed using a mean value engine model(MVEM), which is a widely used benchmark model for engine control system and FDI system design. The simulation results confirm the robustness of the proposed method for various uncertainties and disturbances.

Simulation Based Torsion Beam Rear Axle Type Suspension Development for Enhancing Ride & Handling Performance

Sangha Shin,Jinsik Kim,Jinho Choi 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

This paper deals with the study on the development of the torsion beam rear axle based on simulation for enhancing ride and handling performances. Many small size vehicles use the torsion beam rear axle due to its modularity and cost competitiveness. In order to achieve the desired performances of a vehicle with the rear axle, it is very important to properly determine the axle position and stiffness in the early stage of a vehicle development by CAE since those considerably affect to the package as well as durability, and even cost. For the study and the development of a rear axle with desirable performances, flexible MBD rear axle model and full vehicle ADAMS model is built. Based on the simulation model, performance studies and design recommendations are presented for enhancing the ride and handling performance considering shear center. nonlinear bush stiffness, stopper positioning, and axle stiffness.

Study of Impact Type Surface Junction Thermocouple

Sangha Park,Gisu Park 한국추진공학회 2020 Journal of Propulsion and Energy Vol.1 No.1

In this study, a coaxial thermocouple subjected to impact through a junction manufacturing process was investigated. The performance of the impact-type coaxial thermocouple was analyzed through impact and thermal tests to evaluate the resistance of the thermocouple to external forces and heat. In addition, shock tunnel experimental tests were conducted to assess the durability of the thermocouple in a hypersonic environment. The findings indicated that the impact-type coaxial thermocouple exhibited satisfactory resistance to external heat. Moreover, the results exhibited sufficient repeatability, and the performance of the impact-type coaxial thermocouple was determined to be comparable to that of the conventional coaxial thermocouple.

Seasonal Changes in Concentrations of Proteins and Lipids in Growing Goat Oocytes

Sangha, G.K.,Bhatia, H.,Khera, K.S. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.1

Proteins and lipids not only provide a source of energy to the cell, but also play vital roles in modifying the physical properties and function of the biological membranes. In the present study, we investigated the biochemical constituents, viz. proteins and lipids, in growing oocytes of goat antral follicles during summer and winter seasons. Goat genitalia in phosphate buffered saline (pH 7.4) were brought to the laboratory within one hour of slaughter under aseptic conditions at $37^{\circ}C$. Oocytes were aspirated from normal small (<3 mm in diameter) and large (>3 mm) follicles and pooled for biochemical estimations. A significant increase in the amount of protein and lipid was observed with the growth of the oocyte. The amount of protein varied non-significantly with the season, while the amount of lipid varied significantly. The amounts of phospholipid, cholesterol, free fatty acid, and triglyceride increased with the growth of the oocyte, but no significant effect of season in these constituents was observed. Lysolecithin, sphingomyelin, and sterols were the polar lipids identified in both oocytes prepared from small follicles (small oocytes) as well as large follicles (large oocytes). In addition, the small oocytes also contained phosphatidyl serine, while large oocytes contained phosphatidyl glycerol phosphate and phosphatidyl inositol. Among non-polar lipids, triglycerides and long chain alcohols appear only in small oocytes and not in large oocytes. Monoglycerides, 1,2-diglycerides, 1,3-diglycerides and o-dialkyl glycerol ethers, fatty acids, fatty acid methyl esters, and wax esters were identified in both small and large oocytes. Information on biochemical composition of growing oocytes is relevant to oocyte and embryo competence, culture and cryopreservation.

IEEE 802.11 무선LAN에서 AP의 백오프가 TCP성능에 미치는 영향에 관한 연구

박상하(Sangha Park),우희경(Heekyoung Woo),김종권(Chongkwon Kim) 한국정보과학회 2005 한국정보과학회 학술발표논문집 Vol.32 No.2

IEEE 802.11 에서 현재까지 많이 연구되어진 주제는 노드들 간의 공평성(fairness)에 중점을 두거나 처리율(throughput)을 높이는데 초점을 맞추어 진 것들이었다. 전체 처리율을 높이는데 AP의 백오프 방식에 관련해서는 노드들 간에 관한 연구에 비하여 비교적 연구가 적은편이다. 현재 AP와 노드들은 충돌이 발생하면 BEB(Binary Exponential backoff) 방식으로 셋팅되어 사용하고 있기 때문에 1:N의 불공평한(unfairness) 상황이 발생한다. 하향링크(downlink)가 대부분인 환경에서 AP가 다른 노드들과 같은 채널 접근확률을 가진다는 것은 바람직하지 않다. 따라서 AP가 노드들보다 우선권(priority)을 높여서 처리율을 높이는 방안이 필요하다. 그래서 본 논문에서는 AP의 백오프 방식 및 CW(Contention Window)가 변화하는데 따라서 전체 처리율에 어떤 영향을 끼치는가와 노드 수에 따른 AP의 적절한 전략 과 백오프 CW값을 분석해 보았다.