• 대한치과보철학회지
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• 제30권1호
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• pp.15-24
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• 1992

The purpose of this study was to analyze the mandibular asymmetry of the patients with the temporomandibular dysfunction. In this study, 20 dental students aged between 22 and 27 years, Chosun University, who did not possess any restoration and symptoms like the temporomandybular joint click, pain, and opening limitation of the mandible were selected as the normal group. And 80 patients who were analyzed into the patients with the temporomadibular dysfunction(TMD) were divided into group I as the internal derangement and group II as external derangement. Both the normal group and the TMD Group were faked submento-vertex cephalogram by routine methods after that the unilateral mandibular length(L) and the amount of mandibular asymmetry and deviation were measured and analyzed. The results were as follows : 1, Unilateral mandibular length(L) of the normal group and the TMD group were $112.7{\pm}10.20mm\;and\;102.65{\pm}8.10mm$ respectively (P<0.01). 2. The amount of mandibula asymmetry of the normal group and the TMD group were $5.95{\pm}4.63mm\;and\;5.68{\pm}4.35mm$ respectively (P<0.5). 3. The amount of mandibular deviation of the normal group and the TMD group were $6.00{\pm}4.07\;and\;4.67{\pm}3.40mm$ respectively (P<0.3). 4. In the TMD group, unilateral mandibular length(L) in the affected site and the non-affected site were $102.73{\pm}8.68mm\;and\;102.53{\pm}7.68mm$ respectively (P<0.5).

• 디지털콘텐츠학회 논문지
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• 제9권4호
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• pp.625-633
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• 2008

최근 사용자들의 참여, 개방, 공유가 주요 이슈로 떠오르면서 전문적이고 정확한 정보를 웹에서 찾고자하는 사용자의 요구가 증가하고 있다. 그러나 정보의 범람으로 사용자가 원하는 정보를 정확하게 검색하기 어려우며, 원하는 정보를 검색해도 그 정보에 대한 신뢰성을 판단하기가 어렵다. 따라서 본 논문에서는 신뢰성이 결여되기 쉬운 특정 정보에 대한 신뢰성과 검색의 효율성을 높이기 위해 새로운 랭크 매트릭스를 제안한다. 그리고 제안한 새로운 랭크 매트릭스를 적용한 민간의학 정보 웹 사이트를 구현한다. 제안하는 매트릭스를 사용자 레벨에 기반 하여, 레벨에 따른 평가 가중치를 차등화하여 글의 점수를 부여하는 방법이다. 이러한 방법은 참여자의 심리적 요소를 반영하여 글의 신뢰도를 높이는 방법으로 신뢰성이 결여되기 쉬운 정보의 신뢰도를 높일 수 있는 방안으로 사용될 수 있다.

• 대한치과보철학회지
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• 제20권1호
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• pp.83-91
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• 1982

The mandibular movement during mastication has been studied, however there is still much controversy, therefore the purpose of this study was to establish the fundamental data in order to provide the functional occlusion and information in prosthodontic treatment, and the diagnosis of temporomandibular joint disorder. The author analyzed the characteristics of the border and masticatory movements using the Mandibular Kinesiograph. The value, direction, deviation angulation of the border and masticatory movements were studied on the sagittal and frontal planes in 24 male subjects age of 22-28 without orofacial problems. The obtained results were as follows: 1. The values of border movement on the sagittal plane were an average of $25.81{\pm}5.14mm$ in vertical component and $24.37{\pm}3.76mm$ in ant-post component, and the posterior terminal hinge movement, $9.31{\pm}3.62mm$ in vertical component and $7.59{\pm}2.65mm$ in ant-post. component. 2. The distribution range of the masticatory movement within the border movement was an average of $19.2{\pm}12.81%$ of maximum ant-post, values and $55.5{\pm}16.1%$ of maximum values of border movement, and the movement path, for the most part, was directed to posterior deviation and ranged from 0.98 to 12.00mm, on an average of $5.15{\pm}3.49mm$. 3. On the frontal plane, a number of left and right deviation in 24 subjects was same, however, the right deviation was an average of $2.51{\pm}1.67mm$ compared with the left deviation. 4. On the frontal plane, the point of maximum lateral deviation was an average of $49.7{\pm}11.0%$ of maximum opening values. 5. The angulation between the terminal hinge movement path and the masticatory path was an average of $24.00{\pm}4.65$.

• Journal of Oral Medicine and Pain
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• 제33권4호
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• pp.395-399
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• 2008

측두하악장애 증상으로 나타나는 구강안면부의 통증 및 개구제한 증상은 대부분 관련 구조물 자체의 구조적이거나 기능적인 변화에 의해 유발되지만, 드물게 다른 병적인 상태로 인하여 발생할 수도 있으므로 진단 및 치료에 있어서 주의가 요구된다. 특히 통증 양상 및 임상 소견, 전신적 동반 증상, 치료에 대한 반응 등에 대한 평가에서 두경부 종양과 같이 다른 질환에 의한 측두하악장애 증상이 의심되거나 일반적인 측두하악장애와 다른 소견이 나타나는 경우에는 전산화단층촬영 또는 자기공명영상 등의 부가적인 방사선학적 검사를 적극적으로 시행하여 부가적인 정보를 얻는 것이 필요하다. 본 증례에서는 측두하악장애 증상으로 내원하였던 비인두암종 환자의 진단 및 치료 과정을 통해, 측두하악장애의 진단 및 치료에 있어서 비인두암종 등 두경부 종양의 가능성을 고려해야 할 임상적 소견에 대해 고찰하고자 한다.

• 수산경영론집
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• 제24권2호
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• pp.17-53
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• 1993

Pusan is the largest fishing port in Korea, and deals with more than I million ton of fish catches annually, including catches of coastal and off-shore fisheries as well as those of deep-sea fishery. However, it hen had no fishing port facilities specialized fer deep-sea fishery since it started 30 years ago. Economic and physical losses resulting from this have teen enormous. Although fishing port facilities are a part of infra-structures built by Governments, the construction of them has been delayed due to financial difficulties of Central or local governments. To overcome this harsh situation to which deep-sea fishery cooperations faced, some cooperations have decided to construct fishing port facilities including fish-pier specialized for deep-sea fishery in Gamcheon port. The construction expenses of these facilities were financed by private funds to which they themselves jointly contributed. As a result, a fish-[pier, which has the capacity of serving one fishing vessel of 10, 000 ton or four of 5, 000 ton or four of 1, 000 ton at the same time, will be opened in here by 1994. The paper examines the master plan to revitalize the deep-sea fisheries industry in a deep depression with the opening of these physical facilities. The framwork of the plan is pursued in two different aspects, which are both hardware and software. In a hardware aspect, the plan in to develop Pusan into a city which is suitable for one of the best fishing ports in the world. That is, it is to develop the city into a place famous for sightseeing as well as the distribution and processing of fish-products centering around fish-piers. On the other hand, in a software aspet, it is regarding improvement of the distribution system of fish-products. One way to do that is to make up some deficiencies of the current system of a producers' joint sale. And the other is to establish an exchange of fish-products futures. Through these institutions, we could abrsorb speculative funds, which would otherwise be invested in speculation on fish-products, into productive investment opportunities, We believe that if the plan is realized, the deep-sea fishery in Korea will revive from a long-tasted depression and make progress to become one of the mai industries of Korea.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제13권3호
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• pp.300-304
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• 1991

This is case report of open reduction of condylar fractures with or without discal injury. Many articles described open reduction and internal fixation of condylar fractures emphasize the method of bony reduction and fixation without mention of the position of the disc. So we like to present our cases of open reduction of condylar fractures in conjunction with reconstruction of the disc and associated structures. The pupose of this presentation is to emphasize several well - established principles of trauma management and management of temporomandibular joint injuries, such as 1) in situations of traumatic injury, anatomic restoration is the goal of treatment and, 2) anatomic alignment of the TMJ disc over the condyle is preferable to disc subluxation because the latter may lead to chronic pain, limitation of opening and degenerative arthritis. Although our case is small with short term follow up, we believe that open reduction and internal fixation of condylar fractures in conjunction with disc repair is a biologically sound approach to those fractures indicated for open surgery. Long term follow up will allow better judge the validity of this treatment approach to us.

• 치과방사선
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• 제11권1호
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• pp.79-87
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• 1981

The author analysed the interrelation between the morphologic changes of bone Structures and the position of condylar head from the routine radiographs of 134 cases of the temporomandibular joint arthrosis. The frequencies of coincidence between the site of bone defrmity and condylar head positional change were examined. Also, the positional changes of condylar head and the direction of condylar movement in relation to the kind of bone deformities were observed. The results obtained were as follows; 1. In 52.65 per cent of total cases, the site, of positional change of condylar head was coincided with the site of bone deformans. The frequencies of the coincidence between these in the five items among seven items examined were above 53 per cent. From the results, it seems that the positional changes of condylar head were related with the morphological change of bone structure. 2. Eburnation and erosion. revealed frequently positional changes in the opening and closing position of the mouth, although in the early stages of the TMJ arthrosis. 3. In the bone deformans, during opene position of the mough 44.81 per cent of total cases revealed backword movement and 37.74 per cent showed forward movement. In closed position of the mouth, downward movement was revealed in 35.23 per cent of total cases and upward movement 28.41 per ,cent of total cases. 4. In the cases showing eburnation, the frequencies of coincidence between the site of positional change and bone deformans were 58.57 per cent of the total cases. that means it was high in the early stages of the TMJ arthrosis.

• 한국지반환경공학회 논문집
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• 제6권2호
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• pp.21-30
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• 2005

본 연구의 목적은 식생공법이 적용된 전국의 비탈면에 대한 식생의 공학적 효과를 평가하는데 있다. 대상사면의 공학적 특성은 지표지질조사와 물리실험결과를 이용하여 평가하였다. 통계적 분석결과, 지층조건과 피복도가 상호 독립적인 관계를 보이므로 일률적인 지층분류보다 절리의 발달여부, 절리의 방향성, 개구폭, 표토층 상태와 같은 식생의 조건이 더욱 중요한 인자로 평가될 수 있을 것이다. 시공초기의 음각부의 형성상태와 절리현황, 사면의 기하적 형상과 같은 공학적 조건들과 함께 주변 자생종에 대한 검토 등 생태학적 조건들이 고려됨으로써 비탈면의 조기 녹화에 좀 더 합리적인 접근이 이루어질 수 있을 것으로 판단된다.

• 대한구강악안면병리학회지
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• 제42권5호
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• pp.145-152
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• 2018

A 57 years old female complained of severe pain on the right temporomandibular joint (TMJ) area. Her right condyle had been partly resected under surgical operation 13 years ago due to condyle hypertrophy, thereafter she felt dull pain on TMJ area and recently the lesion became severely swelled and painful leading to cancer phobia. The present radiological views showed slightly enlarged and sclerosed condyle with increased radiopacity, but its articular sliding function was almost disable during mouth opening. The patient's TMJ lesion was carefully managed with conservative physiotherapy and pain treatment. The microsection of condyle head obtained from the previous operation was re-evaluated histologically, and it was finally diagnosed as osteochondrosis dissecans (OCD), exhibiting hyperplastic proliferation of cartilage in condyle head and marked vascular dilatation in epiphyseal zone. This abnormal cartilage tissue was distinguishable from normal cartilage tissue found in the peripheral cartilaginous cap of the same microsection. The involved cartilage cap showed thick hypertrophic chondrocyte zone with horizontal and vertical clefts accompanying diffuse hyaline degeneration. The superficial fibrous zone of cartilage cap was thickened and frequently peeled off, while lower hypertrophic zone of cartilage cap was highly cellular and proliferative. Consequently, the endochondral ossification became aberrant and resulted pre-mature apoptosis of many hypertrophic chondrocytes, followed by diffuse and mild inflammatory reaction in the underlying marrow tissue. Therefore, it was suggested that this hypertrophic condyle lesion, OCD, be differentiated depending on radiological and histological features from ordinary condyle hyperplasia, osteochondroma, and osteoarthritis, and that the pathological confirmation of OCD may provide a reliable modality for dental and medical treatment of chronic and painful TMJ lesion.

• 한국의류산업학회지
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• 제23권1호
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• pp.118-128
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• 2021

This study used a preliminary survey to help develop an ergonomic flight jacket that is suitable for the working environment and mission performance. The results are as follows. The ergonomic sleeve pattern was designed with a forward 165° incline that considers a shoulder joint direction suitable for the motion; in addition, a closely design opening provided warmth and safety from fire. As a result of the dimensional suitability, pilots evaluated that sleeve length and total length of the developed flight jacket were a little long (p<.01), while flight engineers and crew evaluated that those of the developed flight jacket were appropriate (p<.01). Pilots evaluated that chest circumference and waist circumference were large (p<.05), while flight engineers and crews evaluated that those of the developed flight jacket were appropriate. The evaluation of the motion suitability indicated that pilots, flight engineers and crew found the developed flight jacket more comfortable than the current flight jacket (p<.05, p<.01, p<.001). The evaluation of the usability of pockets and penholders indicated that pilots, flight engineers and crew found the developed jacket easier to use (p<.01). The flight engineers and crew evaluated that the appearance of the developed flight jacket was better than the current flight jacket (p<.05). The results of this study show that the difference of environment and mission performance has a significant influence on evaluation; therefore, it is necessary to develop separate military uniforms that included a winter flight jacket to reflect the needs of each group.