자기공명영상용 라디오주파수 코일의 제작에 있어서 동조 및 매칭에 영향을 미치는 전기 용량 값들의 실험적 측정

양경승,신용진,김영섭,한재진,이성길,김승국,김영근,지연상 조선대학교 기초과학연구소 2003 自然科學硏究 Vol.26 No.-

Radio frequency coil which is capable of transmit and receive the signal has been used for image production in magnetic resonance imaging(MRI). Tuning and matching characteristic of radio frequency coil is major factor determining the image quality. In experiment the used coil was called a staircase type coil which is simplified the birdcage coil and referred to a simple LC resonant circuit. Because the inductance values of the coils are fixed coil performance was examined by changing of the capacitance values. In this study capacitance values were experimentally determined to increase of-tuning and matching effect in junction of the coil between coil endring and BNC cable to obtain the high quality of image.

안와골절의 외과적 접근에 대한 증례보고

민승기,이은택,오승환,이동근,고세욱,송종민,최성림 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.3

The Orbital fracture which is often combined with midface fracture can cause decreased visual acuity, limitation of eyeball movement, diplopia, enophthalmos, etc. Traumatic orbital fracture causes change of orbital volume, results in diplopia and enophthalmos thus, accurate repositioning of displaced bone and reconstruction of orbital defect with autogenous materials(cranial, rib, iliac bone, cartilage and fascia lata) or alloplastic materials(gelatin film, polyglactin mesh, methylmethacrylate, Teflon, silicone, Supermid, hydroxyapatite and metal). The key point of reconstruction of orbit is accurate repositioning of displaced orbital floor, lateral, medial orbital wall and sufficient bonegraft in anatomical defect. As this cases, we obtained good results through transconjunctival and coronal approach who were required orbital reconstruction. Also, we accurately diagnosed orbital fracture with C.T., 3D model and good result for orbital reconstruction with sufficient parietal block bone graft during average 16.8 months follow-up.

젊은 성인에서 신체 만족도에 따른 문제해결양식, 대인관계문제와 우울증상과 자살사고와의 관련성

차승민,김태성,강문희,권명진,김정란,왕성근,지익성 대한생물치료정신의학회 2011 생물치료정신의학 Vol.17 No.2

Objectives:The aim of this study was to evaluate that problem solving styles, interpersonal problems, depression and suicidal ideation according to body image satisfaction. Methods:One hundred and nineteen young healthy normal subjects filled out administered the Body Dysmorphic Disorder Examination-Self Report (Korean version of BDDE-SR K-BDDE-SR), Problem Solving Style Scale(Korean version PSS), Korean Inventory of Interpersonal Problem(KIIP), Korean version of the Depression Anxiety Stress Scale(KDASS-21), Korean version of Beck Scale for Suicidal Ideation(Korean version SSI) and Korean version of Reynolds Suicidal Ideation Questionnaire(Korean version SIQ) for a month. Results:Out of the 119 subjects, 39%(N=46) was male and 61%(N=73) was female. In high K-BDDE-SR group (higher than 67), helplessness was significantly higher than low K-BDDE-SR group(lower than 67), and problem-solving confidence, creative style, approach style were significantly lower than low K-BDDE-SR group. Also, Higher level of all KIIP factors in High K-BDDE-SR group was significantly differ than low K-BDDE-SR group. In High K-BDDE-SR group, K-DASS-21, SSI, and SIQ were significantly higher than low K-BDDE-SR group. Using multiple regression analysis contributing variance toward the total factor score of K-BDDE-SR of participants were K-DASS-21 and SIQ. Conclusion:Our results indicates that high tendency of dissatisfied body images have differences in helplessness, problem-solving confidence, approach style, interpersonal problems, depression and suicidal ideation compared to low tendency of dissatisfied body images. It is necessary to study body dysmorphic disorder patients group in the future.

구개열 아동 언어의 진단 평가

신효근,고승오,홍기환,서정환,고도흥,김현기 大韓顎顔面成形再建外科學會 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.1

20년전과 비교한 한국청년의 미소 변화에 관한 연구

범승균,정지혜,김태영,이경은,동진근 大韓齒科補綴學會 2012 대한치과보철학회지 Vol.50 No.3

Purpose: Teeth are generally exposed when people smiling. Moreover, the exposed teeth and soft tissue when smiling becomes an important guideline for esthetically prosthetic restoration. This research is to compare and find out differences of Korean young men's smile living in presence and twenty years ago. Materials and methods: Subjects, 100 young men (50 male and 50 female), were required about several aspects; normally developed physical condition, no psychological or genetic disorders, a fine face with no loss of teeth, no experience in orthodontic or prosthetic treatment, relatively normal occlusion, aged between 20 - 29. The photos of the subject at rest position and front face when fully smiled were taken three times. 100 photos (50 male and 50 female) were chosen at random from the 240 university students' smile photos taken by Yoon and his colleagues in 1991. By Hulsey's method of measuring smile, several factors; the change of upper lip curvature, the change of the relation between the upper lip and teeth, parallelism between Mx. incisor and lower lip, contact relation between Mx. incisor and lower lip and teeth displayed in a smile, were measured and analyzed. Meanwhile, ten dentists assessed aesthetic evaluation about men and women's smile for twice and recorded and compared smile score. The -test (P<.05) was used to compare the measured value. The difference of smile score was analyzed by t-test (P<.05). Results: The smile score calculated in 2011 (60.22) was higher than that of 1991 (52.80). Among five measurement categories, the noticeable difference was distinguished from two factors; the change of upper lip curvature and contact relation between Mx. incisor and lower lip. Conclusion: The Korean young men's smile has been considerably improved for twenty years. And it is found that the change of upper lip curvature plays an important role, that is, the smile formed with an ascended labial commissure has been increased significantly. 연구 목적: 일반적으로 치아는 미소 지을 때 가장 많이 노출되며, 미소 시에 나타나는 치아와 연조직과의 관계 등은 심미적인 보철 수복에 있어서 중요한 지침이 된다. 본 연구는 20년 전 한국 청년들의 미소와 현재 한국 청년들의 미소를 비교하여 그 차이를 알아보고자 하였다. 연구 재료 및 방법: 신체적인 발육 상태가 정상적이고 전신적 또는 유전적 질환이 없으며, 안모가 양호하고 치아의 결손이 없으며 교정 및 보철치료를 받은 경험이 없고, 교합상태가 비교적 정상적인 20 - 29세 사이의 청년 100명(남자 50명, 여자 50명)을 대상으로, Cephalometer에 사용되는 두부 고정 장치를 사용하여 피검자의 F-H plane이 지면에 평행하도록 한 후, 35 mm 카메라(400D. Cannon, Japan), 120 mm 렌즈 그리고 삼각대를 사용하여 피검자의 midsagittal plane에 카메라 렌즈의 중심을 맞추고 상악 중절치 절단과 렌즈와의 거리를 930 mm로 하여 안정위 및 full smile 시의 안모 정면 사진을 3회씩 촬영하였다. 1991년 윤 등이 촬영한 대학생 240명 중 무작위로 선택한 100명(남자 50명, 여 자 50명)의 미소사진과 함께 개인용 컴퓨터 및 V-ceph 6.0 프로그램을 이용하고 Hulsey의 미소 계측 방법을 참고로 하여, 상순의 형태, 상순과 치아와의 관계, 하순과 상악 전치 절단연과의 평행 관계, 하순과 상악 전치 절단연과의 접촉 관계, 미소시 나타나는 치아 등을 계측하고 분석하였다. 한편 치과의사 10인이 남,녀 각 2회씩 미소에 대한 미적 평가를 시행하여 미소평점을 기록하고 비교하였다. 결과: 지난 20년간 한국 청년의 미소가 크게 향상되었으며 이러한 변화는 주로 상순의 형태가 영향을 준 것을 알 수 있었다. 즉 입꼬리가 위로 올라가는 형태의 미소가 괄목할 만한 증가를 보인 반면 입 꼬리가 아래로 처지는 형태의 미소는 현저한 감소를 보였다. 결론: 지난 20년간 한국 청년의 미소가 크게 향상되었는데 이러한 변화는 주로 상순의 형태가 영향을 준 것으로 나타났다.

X-선 발생 장치 촬영 Table의 수평 왜곡이 영상에 미치는 영향에 관한 고찰

김영근,김승국,이성길 광주보건대학 2001 論文集 Vol.26 No.-

This study has examined the horizontal image distortion of 71 tables of X-ray generators at the general hospitals and clinics in kwang-ju The results are as follows 1. The horizontal distortion rate at the clinics is up to 0˚~0.5˚, 0.5˚~1.0˚ which means that the quality control of tables(angle) of clinics of is 4% higher than general hospitals. 2. The horizontal image distortion rates of the devices which were made before 1985 are 0.5˚~1.0˚ and 1.0˚~1.5˚ which shows that these rates are 23% and 6% higher respectively than those of 1995. 3. the number of tables away from the first circle in the photography taken by the beam alignment test toll was 56(79%). If the imaging factors of X-ray photograph are divided into two parts, imaging and photographing. It is taught that the men who install and operator the devices should pay more attention to control.

지식기반 사회에서의 정보민주주의와 정보복지 정책 : 정보편중 및 과독점 해소방안 A Solution for the Digital Divide

양승목,송호근,조권중 서울대학교 사회과학연구원 2002 한국사회과학 Vol.24 No.1

본 연구는 지식기반 사회에서 나타나고 있는 정보의 편중과 과독점을 정보격차 내지는 정보 불평등의 문제로 인식하고, 정보민주주의와 정보복지라는 두 가지 이론적 논의를 바탕으로 지식기반 사회의 정보격차와 정보불평등을 극복하는 정책적 대안을 모색하고자 하였다. 이를 위해 먼저, 정보격차를 야기하는 사회적 기제를 논의하고 각종 사회조사 통계의 분석을 통해 정보격차의 현황을 검토하였다. 그리고 정보격차를 극복하기 위한 노력의 이론적 근거로서 정보민주주의와 정보복지 개념을 논의하고, 국내외의 정보격차 해소 정책에 대한 사례연구를 실시하였다 그 결과, 정보격차와 정보불평등을 해소하려는 기존의 노력들은 주로 하드웨어든 소프트웨어든 정보통신기술에 대한 접근과 그것을 사용할 수 있는 능력의 배양에 초점을 맞추어 왔음을 알 수 있다 이러한 노력들이 나름대로 충분히 의미있고 또 중요한 것이지만, 정보격차를 궁극적으로 해결하기 위해서는 단순히 물리적 접근을 보장하는 차원이 아니라 정보불평등을 야기하는 사회 구조적 문제를 직시하고 정보사회에서의 사회적 삶의 가치를 중시하는 새로운 형태의 정책방안이 필요하다. This study examines the theoretical implications of 'information democracy' and 'information welfare' in the context of the rapid development of Information and Communication Technologies ICTs), and suggests policies to overcome the digital divide or information inequality between information rich and poor. Based upon an extensive survey of social statistics and the various policies implemented in Korea, the United States, and the United Kingdom, this study argues that the previous efforts to prevent the digital divide are limited because they have focused on broadening access to ICT hardware and software and providing widely available basic training in their use. As important and welcome as these efforts, we suggest the policies that move beyond a concern with physical access to ICTs, paying more attention to the structural aspect of information inequality as well as the value of social life in the age of information society.

全南 南部와 西部海域의 海洋物理, 化學的 特性

田承寬,金相根,朴榮齋,李貞愛 木浦大學校沿岸生物硏究所 1984 沿岸生物硏究 Vol.1 No.1

Seasonal variations of physico-chemical factors were studied in both southern and western coastal waters of Chon Nam Province during a decade from 1971 to 1980. The variation of water temperature in the investigated areas was within the range of 3.6-27℃ throughout the research period. The temperature of western coastal water was lower than that of southern coastal water by 2∼4℃ in February. In spring and summer, water temperature of Jindo-Jodo area was characteristically lower than any other area by 1.0∼1.5℃. The aslinity varied within the range of 25.97∼34.32%0 throughout the research period, and showed its maximum value in February and its minimum in September. Western coastal water was always less saline than southern coastal water. Dissolved oxygen varied widely within the range of 4.25∼58.75㎖/ℓ,and showed the lowest value in September and the highest in February. Concentrations of nitrite, Phosphate, and silicate varied within the range of 0.01∼2.96 ㎍-at/ℓ, 0.06∼2.07㎍-at/ℓ, and 2.13∼29.-01 ㎍-at/ℓ, respectively. Nitrite and silicate reached their maximum concentrations in summer but phosphate reached its maximum concentration in winter. These nutrients appeared abundantly in Sinan-Mokpo area and Waned-Kangjin area, under influence of the Yongsan liver and the Tamijin liver, respectively. Transparency of waters in the investigated areas varied within the range of 0.1∼5.0m with the tendency of being lower in southern coastal area than in southern coastal area than in western coastal area. Maximum value of transparency appeared in summer, and minimum value in winter.

대청호 상수원수 중의 탁도, 유기오염물질, 조류 및 투입분말활성탄 제거를 위한 DAF 공정 응용

왕창근,이승근 대한상하수도학회 2002 상하수도학회지 Vol.16 No.5

DAF (Dissolved Air Flotation) is an effective alternative process to conventional sedimentation in water containing low-density particles. The water is saturated with compressed air to dissolve the air into the water at high pressure in a saturation tank. Then the water containing dissolved air is released into a floatation tank at a lower pressure, generating micro-bubbles that rise gently through the water and carry the suspended matter to the surface. Removal efficiencies of turbidity, chlorophyll-a, DOC and UV_(254)Abs. by DAF and conventional sedimentation for raw water from Dae-chung Lake were compared. DOC removal efficiency after adding PAC (Powdered Activated Carbon) was also investigated. At low turbidity, the removal efficiency of turbidity, chlorophyll-a, DOC and UV_(254)Abs was 92.4%, 94.4%, 20.2% and 24.9% respectively. It is concluded that the DAF process is feasible for efficient removal of turbidity and algae in Daejeon water treatment plants.

이명과 청각민감증을 동반한 편측 고음 급추형 감각신경성 난청의 청각 재활

허승덕,강명구,고도흥,정동근 한국음성과학회 2004 음성과학 Vol.11 No.3

In case of the hearing impairment with tinnitus and increased sound sensitivity, it is known that the patients tend to appeal the psychologically oriented social handicap rather than communication disability. The audiologist who is responsible for such patients in aural rehabilitation should pay special attention to the counseling techniques inducting tinnitus retain therapy (TRT), ear protector, noise generator, or specific acoustic training based on dose cooperation and rapport. And then the audiologist should try to lessen their reaction to the tinnitus by using a hearing aid. This therapies tries to focus not a total approach but a treatment to lessen the severity of tinnitus. This paper as a case report that a unilateral sharply slopped sensorineural hearing impaired person with tinnitus and increased sound sensitivity by using four channel digital signal processing (DSP) hearing aid with programming increment at low level (PILL).