• 한국음향학회지
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• 제20권6호
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• pp.82-86
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• 2001

본 논문에서는 평행한 이중 선 배열을 위한 합성 기법을 제안하고자 한다. 일반적으로 천해에서 사용되는 단일 배열은 신호의 이득을 높이고 각 분해능을 높이기 위해서 긴 어퍼쳐 길이를 요구하고 있다. 그러나 원거리로부터 발생한 극 저주파 신호는 수신단에서 어레이를 기준으로 좌, 우 모호성을 드러낸다. 이러한 문제점을 해결하기 위해 평행한 이중 선 배열을 이용하면서 합성 기법을 적용하였다. 어레이 합성 기법은 연속적인 시간에서 얻어진 각각의 데이터들을 빔 영역에서 코히어런트한 합성을 거쳐 공간 영역에서 가상의 어레이로 확장하였다. 제안된 방법은 인접한 다중 음원 환경에서의 각도 오차를 줄이고 어레이 합성 횟수에 따라 향상된 분해능성능을 나타내었다. 시뮬레이션 결과 어레이 합성 기법을 적용하기 전과 5회의 합성을 수행했을 경우, 평균 부엽 레벨은 약 7dB가 향상되었다.

• Imaging Science in Dentistry
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• 제44권4호
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• pp.321-324
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• 2014

Postoperative maxillary cysts are locally aggressive lesions, usually developing as delayed complications many years after radical antral surgery. This report describes a case of bilateral postoperative maxillary cysts following orthognathic surgery performed approximately 21 years previously. The patient complained of stinging pain on her right cheek. Radiographic examination revealed low-attenuation lesions on both maxillary sinuses with discontinuously corticated margins without distinct expansion or bone destruction. The cysts were enucleated with the removal of metal plates and screws for pain relief. Histopathological examination confirmed the diagnosis of postoperative maxillary cysts lined by ciliated, pseudostratified columnar cells. The patient has remained asymptomatic thus far, and there was no evidence of local recurrence at 21 months of postoperative follow-up.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.720-723
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• 2003

이제까지의 디지털 홈 연구는 네트워크기술과 보안 관련 시스템에 관한 것이 주를 이루었다. 홈 네트워크에서 개인화 되고 차별화 된 서비스의 제공이 새로운 이슈로 부각되고 있다. 본 논문에서 제안하는 시스템은 가족 구성원 각자의 특성을 고려한 차별적인 서비스를 제공한다. 출입통제시스템을 통하여 내부 사용자 정보를 얻고, 컨트롤러는 내부 사용자의 데이터베이스를 활성화시켜 차별적인 환경을 제공하고, 홈 네트워크의 서브시스템을 제어하는 것이다. 예로, 사용자 연령에 따라 TV 프로그램 혹은 채널을 제한하거나 사용자마다의 다른 인터넷 환경을 제공하거나 전화번호에 제한을 둘 수 있고, 홈쇼핑 결제 권한을 제한하는 등 가족 구성원간의 차별적인 환경을 자동으로 제공할 수 있다.

• Investigative Magnetic Resonance Imaging
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• 제17권4호
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• pp.308-311
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• 2013

심부실비우스열뇌수막종은 뇌수막종의 드문 형태이다. 본 증례를 합하여 한국에서 총 4증례가 보고 되었다. 이전 병력이 없던 43세 남자가 경련발작을 주소로 본원에 내원하였다. 자기공명영상에서 오른 심부실비우스열에 테두리가 조영증강되는 종괴가 발견되었고 경막과의 연결성은 없었다. 수술적 제거 후 심부실비우스뇌수막종으로 진단되었다.

• 대한의용생체공학회:의공학회지
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• 제36권4호
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• pp.135-142
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• 2015

Outflow cannulation site of left ventricular assist device(LVAD) chosen by considering anatomical structure of thoracic cavity and vascular system. Though outflow cannulation site influences blood perfusion at each branch, there is no standard rule or quantitative data. In this study, we computed the amount of blood perfusion at each arterial branch numerically according to outflow cannulation sites(ascending aorta, aortic arch, descending aorta). We generated computational meshes to the three-dimensionally reconstructed arterial system. Clinically measured arterial pressure were used for inlet boundary condition, porous media were applied to mimic blood flow resistance. Blood perfusion through left common carotid artery was 2.5 times higher than other cases, and that through right common carotid artery was 1.1 times higher than other branches. Although this is simulation study, will be useful reference data for the clinical study of LVAD which considers blood perfusion efficiency.

• Radiation Oncology Journal
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• 제31권3호
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• pp.171-174
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• 2013

Sorafenib is a multi-targeted kinase inhibitor, which is the current standard treatment for advanced hepatocellular carcinoma (HCC). Only one case of radiation recall dermatitis (RRD) associated with sorafenib has been reported so far. Our patient with recurrent HCC was treated with palliative radiotherapy (RT) for the chest wall mass. Sorafenib at 400 mg twice daily was begun on the day following RT. On the 14th day post-RT, an erythematous patch was observed on right chest wall which matched area previously irradiated. It was consistent with RRD. Ten days later, a disseminated exanthematous rash and severe pruritus occurred. Sorafenib was stopped and an oral antihistamine was prescribed to relieve symptoms. At the 1-week follow-up after the cessation of sorafenib, all symptoms were resolved. Physicians should be alert to this recall phenomenon as it can occur both in the skin and elsewhere and the occurrence of RRD may be unpredictable.

• 한국임상수의학회지
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• 제21권1호
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• pp.66-71
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• 2004

2 Cases of nephrotomy for removal of calculi in dog were referred to veterinary teaching hospital of Konkuk University. In case 1, a 5 year-old, castrated male Yorkshire Terrier dog was referred because of intermittent hematuria, pain in urination for one month. Hematologic and chemical examination showed mild increased BUN and CPK. Radiographic findings revealed radiopaque materials in the urinary bladder, urethra, and left kidney. Retrograde hydropropulsion was performed to move the calculi into the bladder, and cystotomy was done to remove calculi. Nephrotomy was performed to removal of the calculi from the left renal pelvis and calyx. After operation renal function were recovered and preserved. In case 2, a 5 year-old, neutral female Schnauzer dog was referred because of persistant vomiting, anorexia, and celialgia for 20 days. Hematologic and chemical examination showed stress leucogram, moderate azotemia, hypercalcemia, hyperphosphatemia, and increased ALP. Radiographic findings revealed enlargement of the left kidney and radiopaque materials in the both of the kidneys. On excretory urography, left kidney was no pyelogram. On ultrasonography, renal tissue was very thin and distended renal pelvis appeared. Nephrectomy of nonfunctional left kidney and nephrotomy for removal of calculi from the right renal pelvis and calyx were done. One week after operation, renal and hepatic functions were recovered. So, in cases of renal calculi, it is necessary that renal calculi are extracted actively as far as the patient's body condition endurable.

• 의료법학
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• 제15권2호
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• pp.317-343
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• 2014

In order to account for whether a doctor should indemnify damages resulted from violation of duty of care, the fact that a doctor violated duty of care, that damages were incurred, and the link between violation of duty of care and damages incurred, respectively, should be verified. So even though a doctor violated duty of care to patients, he or she will not bear the responsibility to indemnify damages unless it is not verified. If a doctor's negligence in medical practices is assessed that obviously unfaithful medical practice far exceeds the limit of admission of a patient, it will not go against people's general perception of justice or law and order to constitute a medical malpractice itself as an illegal action that will require liabiliy for damage. However, when the limit of admission is set too low, a patient's benefit and expectation of proper medical treatment can be violated. In contrast, if the limit of admission is set high, it can leave too little room for doctors' discretion for treatments due to a bigger risk of indemnification for damages. Thus, a reasonable balance that can satisfy both benefit and expectation of patients and doctors' right to treatment is needed.

• Journal of Chest Surgery
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• 제16권4호
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• pp.571-583
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• 1983

Thymic tumor is the most common neoplasm originating in the anterior mediastinum. Histologically, thymic tumors and tumorlike conditions have been classified into thymic cyst, thymolipoma, true thymic hyperplasia, thymoma and carcinoid tumor of the thymus gland. We have experienced several tumors and a few tumorlike conditions of the thymus gland in 10 patients: thymoma 6, thymic hyperplasia 2, carcinoid tumor 1 and thymic cyst 1. The age distributions were ranging from 30 to 60 years except for one 3 year old child [malignant thymoma, lymphocytic type], and male to female ratio was 1:1.5. In 6 cases, thymic lesions were removed through lateral thoracic incision [right 2, left 4] because the mediastinal masses were growing far into the pleural space, meanwhile, medially located lesions [4 cases] through median sternotomy incision. Among these 10 patients, 3 were malignant thymomas, in which 2 were died of recurrence after tumor resection. Myasthenia gravis was all noted in 3 females [thymoma 2, thymic follicular hyperplasia 1], in which only two revealed remission in symptoms following thymectomy. The authors would like to recommend early radical thymectomy through median sternotomy incision whenever patients demonstrate suspicious thymic tumor lesions on the chest roentgenogram or generalized myasthenic symptoms.

• The International Journal of Costume Culture
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• 제9권2호
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• pp.125-132
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• 2006

This Study in order to review the history of our children's costumes, this study examined the socio-cultural background of Chosun dynasty and then, reviewed children's costumes comprehensively during that period according to their considerations, kinds, colors and patterns. In addition, this study explored the possibility of making use of the characteristics of children's costumes during Chosun dynasty, since it was perceived that if our children should be dressed in a traditional costume designed with some traditional costume characteristics and ornaments, our tradition would be enlivened in their life and spirit. It is results can be summed up as follows; Our traditional costumes consisted basically of Yu(襦), Go(袴). Sang(裳) and Po(袍) and additionally of Headgear(冠帽), Dae(帶), Hwa(靴) or Yi and Beosun, which must prove that the Korean people is cultural people. Our ancestors were dressed first in Yu(襦), Go(袴). Sang(裳) and Po(袍) to be supported by dae(帶). Our traditional costume style was 'front adjustment' or otherwise, left or right adjustment. Commoners' costumes would change after the series of foreign invasions and again during mid-late Chosun dynasty. During the period of King Sukjong, Jeogori was far shorter and smaller, while China was more diversified and voluminous enough to look like a jar.