• Archives of Plastic Surgery
• /
• 제36권1호
• /
• pp.93-95
• /
• 2009

Purpose: Congenital factor VII (FVII) deficiency is a rare bleeding disorder and surgery can cause excessive bleeding due to an extrinsic pathway problem. It can be diagnosed by increased PT and decreased FVII level in coagulation test. Symptom varies according to the level of FVII, but it is essential to prevent intraoperative excessive bleeding. Methods: In this report, we described the orthognatic surgery experience in a mandibular prognathism patient with congenital FVII deficiency, in which recombinant activated factor VII (rFVIIa) was used to manage the bleeding. Rsults: We could get a successful result without any complication and there was minimal intraoperative bleeding. Conclusion: The orthognathic surgery could therefore be safely performed in patients with congenital factor VII deficiency using rFVIIa.

• 한국컴퓨터정보학회논문지
• /
• 제5권4호
• /
• pp.102-105
• /
• 2000

외부 베이스 표면에 형성되는 표면 재결합 상태의 불안정성을 개선하기 위해 에미터 ledge 구조로 제작된 InGaP/GaAs HBT의 신뢰도 측정을 위해 고온에서 오랜 시간동안 정전류 스트레스를 인가하였다. 553K, 533K, 513K에서 콜렉터 전류 24㎃로 스트레스를 인가해 전류이득의 열화를 관찰하였다. 그 결과 EA＝1.97eV, WTTF＝4.8$\times$108시간(14$0^{\circ}C$)을 구하였다. InGaP/GaAs HBT의 열화 원인은 베이스 도펀트인 C의 확산으로 추정된다.

• 산업공학
• /
• 제20권1호
• /
• pp.87-93
• /
• 2007

Burn-in is an engineering method for screening out products containing reliability defects which would cause early failures in field operation. Previously, various burn-in models have been proposed mainly focused on the trade-off of shop repair cost and warranty cost ignoring manufacturing yield. From the view point of a manufacturer, however, burn-in decreases warranty cost at the expense of yield reduction. In this paper, we provide a general model quantifying a trade-off between product yield and reliability, in which any defect distribution from previous yield models can be used. A profit function is expressed in burn-in environments for determining an optimal burn-in time. Finally, the method is illustrated with gate oxide failures which is an important reliability concerns for VLSI CMOS circuits.

• Archives of Plastic Surgery
• /
• 제32권5호
• /
• pp.656-659
• /
• 2005

Plantar corn is a circumscribed and sharply demarcated hard mass of traumatic hyperkeratosis, which has a central core impacting the dermis deeply and causes pain while walking. The cause of the corn is the mechanical stress to the skin induced by several causative factors; extrinsic(tight shoes) or intrinsic(bony prominence), or combined(the claw toe). We found 7 cases of patients with a painful recurrent plantar corn which had an epidermal cyst under its lesion. These corns and cysts were excised totally and there was no recurrence in all cases during two to four months follow-up period. We think that an epidermal cyst may be another intrinsic factor for the development of a plantar corn. So, an epidermal cyst should be considered once in a recurrent plantar corn to be recalcitrant against popular treatments.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
• /
• pp.251-252
• /
• 2018

Cool roof coating materials generally use white color which has the highest reflectance, but it is a tendency to apply various colors because it can cause glare and fatigue of a nearby building user due to the urban beauty and high reflection. This study when applying color diversity material cool roof coating was carried out as a basic research for the degree of solar radiation reflectance change. Experiment result. As a result of the measurement of the reflectance of each specimen, white showed the best reflectance in the near infrared region, and black had the lowest reflectance. Also, in case of brown, it was confirmed that the reflectance of solar radiation in the near extrinsic region is lower than that of gray.

• 한방안이비인후피부과학회지
• /
• 제15권1호
• /
• pp.285-290
• /
• 2002

Urticaria is classified as Eunjin in Oriental Medicine. The intrinsic causes include digestive system disorder, food poison, parasite, female reproductive health problem, nervous breakdown, and disorder of endocrine hormone. The extrinsic sources include all kinds of insect bites or stings, medications, pollen, dirt, and toxic smells. Some unknown sources also produce urticaria. The urticaria that lasts for more than six weeks, is categorized as chronic urticaria which is not very different from acute urticaria that occurs rapid but for a short period. The chronic urticaria may come every day, and its symptoms can even get worse at irregular or regular intervals. The cycle is hard to predict. It could be weeks or years. In clinical treatments, the syndromes of patient's chronic urticaria with cerebral hemorrhage have been analyzed and identified as follows: The diagnosis by asking the patient's case history showed that the root cause was retention of food resulting from dysfunction of the spleen and stomach. First, Pyeongwisan was dosed. From the syndrome differentiation with four diagnostic methods, we diagnosed the symptoms as Poong yoel (wind-heat). Then, Hyeongbangpaedocksangamibang was prescribed to get very effective results.

• Clinics in Shoulder and Elbow
• /
• 제17권2호
• /
• pp.91-100
• /
• 2014

Partial-thickness rotator cuff tear (PTRCT) is not single disease entity but one phase of disease spectrum. Symptoms of PTRCT vary from being asymptomatic to severe pain leading to deterioration in quality of life. Pathogenesis of degenerative PTRCT is multifactorial. Whereas articular sided PTRCT is usually caused by internal causes, both internal and external causes have important role in bursal sided PTRCT. A detailed history, clinical examination and magnetic resonance angiography are used in the diagnosis of PTRCT. Treatment of PTRCT is chosen based on age, demands of patients, causes and depth of tear. In most patients, non-operative treatment should be initiated. Whereas debridement can be done for less than 6 mm of articular sided PTRCT and in less than 3 mm of bursal sided PTRCT, repair techniques should be considered for higher grade PTRCT than that. Although the effect of acromioplasty is not clear, acromioplasty may be performed when the extrinsic causes appear to be the cause of tear. Either transtendon repair technique or repair after tear completion provided satisfactory clinical outcomes in treatment of articular sided PTRCT.

• 융합경영연구
• /
• 제5권1호
• /
• pp.21-26
• /
• 2017

Purpose - This study extracts performance-reward factors based on the previous studies related to Herzberg's two-factor theory and performance-reward and proposes a research method to identify how these factors have an influence on task performance directly related to production performance and contextual performance that has an indirect influence. Research Design, Data, and Methodology - This study draws performance-reward factors through Focus Group Interview(FGI), classifies them into economic/uneconomic and direct/indirect factors, draws maintenance/improvement factors and unnecessary ones through IPA, and maximizes the effectiveness of performance-reward factors. Results - It also identifies how performance-reward factors have an influence on internal and external motives based on previous studies, classifies performance-reward factors into task performance and contextual performance and identifies the influence relationship between these, and proposes a research model to identify the roles of equity sensitivity based on equity theory. Conclusion - The findings from this study are expected to lay the groundwork for drawing various methods to reduce the turnover rate of employees and be important resources for reinforcing the competitiveness of businesses by classifying the performance -reward factors that may cause internal and external motives from the small and medium-sized manufacturing perspective and presenting methods to identify if these have an influence on task performance and contextual performance.

• 기독교교육논총
• /
• 제64권
• /
• pp.173-202
• /
• 2020

본 연구는 교회 가정사역 프로그램 참여자의 학습참여동기가 서번트 리더십에 미치는 영향과 공동체 의식의 구조적 관계를 탐색하기 위해서 수행되었다. 먼저 선행연구 분석을 통해 구조모형을 구성하였다. 구조모형 검증을 위해 전국의 교회 및 단체에서 실시하는 교회 가정사역에 프로그램에 참여하고 있는 부부를 대상으로 배포한 설문지 700부 중 607부를 대상 자료로 수집하였다. 자료수집은 교회 가정사역 이후 학습참여동기, 서번트 리더십, 공동체 의식을 설문지를 사용하여 수집하였다. 수집된 자료는 구조방정식 모형 분석 방법을 사용하여 학습참여동기에 대한 서번트 리더십의 영향과 공동체 의식의의 구조적 관계에 대해 분석하였다. 그 결과 본 연구에서 제안한 구조적 모형이 타당한 것으로 검증되었다. 이에 학습참여 동기 가운데 내재적 동기와 외재적 동기의 영향을 공동체 의식이 매개하여 서번트 리더십에 영향을 주는 것으로 검증되었으며, 서번트 리더십의 영향을 공동체 의식이 매개하는 경로가 영향력을 가지고 있는 것으로 검증되었다. 이에 교회 가정사역을 운영할 때, 참여자들의 내재적 참여동기와 외재적 참여동기를 고려하여 공동체 의식을 조절한다면 학습참여동기의 수준을 조절할 수 있다는 시사점을 제시할 수 있다.

• 환경생물
• /
• 제40권1호
• /
• pp.25-53
• /
• 2022

본 연구에서는 오늘날 바닷새 및 해양어류의 이동 연구방법 및 내용의 동향을 고찰하고, 기존 동물 이동 연구의 기본 틀에 의거하여 향구 연구방향에 관하여 제언하였다. 연구방법론적 측면에서는 과학기술의 발달에 따라 전파추적 기법, 음향추적 기법, RFID, 위성추적 기법, 지오로케이터 등을 이용한 위치추적 기법이 바닷새 및 해양어류의 이동 연구에 널리 활용되고 있으며, 개체군의 분포 및 밀도조사, 안정성 동위원소 등 체내 물질 분석을 통한 연구도 이루어진다. 연구내용의 경우, 크게 환경요인이나 종간 경쟁 등의 외적 요인, 호르몬을 비롯한 체내 물질과 같은 내적 요인, 어업활동이나 해상풍력단지 건설 등의 인위적인 활동, 그리고 기후변화가 바닷새와 해양어류의 이동에 미치는 영향 등이 다루어지고 있다. 추후 연구에서는 내적 요인과 관련하여 이동과 분산에 영향을 주거나 유발하는 요인이 되는 체내 생리적 요인이나 변화를 규명하고, 이동 능력 분석을 위하여 자기장의 변화가 조류 및 어류의 이주 능력에 미치는 영향이나 종별 시공간적 이주 능력의 차이, 이주 정확성 및 성공률에 영향을 미치는 요인에 관한 연구가 필요할 것으로 제언한다. 또한 외부 환경적 요인과 관련해서는 어업활동이나 해상풍력 등의 방해요인과 기후변화가 해양동물들의 이주 및 분산 패턴에 미치는 영향에 대한 연구의 필요성이 대두되며, 마지막으로 여러 생태적 측면에서 서로에게 직·간접적인 영향을 미치는 바닷새와 해양어류에 대한 융합적인 연구가 요구된다.