• Journal of the Korean Orthopaedic Association
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• v.54 no.2
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• pp.110-119
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• 2019

Proximal humerus fracture can be defined as a fracture that occurs in the surgical neck or proximal part of the humerus. Despite the appropriate treatment, however, various complications and sequelae can occur, and the treatment is quite difficult often requiring surgical treatment, such as a shoulder replacement. The classification of sequelae after a proximal humerus fracture is most commonly used by Boileau and can be divided into two categories and four types. Category I is an intracapsular impacted fracture that is not accompanied by important distortions between the tuberosities and humeral head. An anatomic prosthesis can be used without greater tuberosity osteotomy. In category I, there are type 1 with cephalic collapse or necrosis with minimal tuberosity malunion and type 2 related to locked dislocation or fracture-dislocation. Category II is an extracapsular dis-impacted fracture with gross distortion between the tuberosities and the humeral head. To perform an anatomic prosthesis, a tuberosity osteotomy should be performed. In category II, there are type 3 with nonunion of the surgical neck and type 4 with severe tuberosity malunion. In type 1, non-constrained arthroplasty (NCA) without a tuberosity osteotomy should be considered as a treatment. On the other hand, reverse shoulder arthroplasty (RSA) should be considered if types 1C or 1D accompanied by valgus or varus deformity or severe fatty degeneration of the rotator cuff. In general, the results are satisfactory when NCA is performed in type 2 sequelae. On the other hand, RSA can be considered as an option when there is no bony defect of the glenoid and a defect of the rotator cuff is accompanied. In type 3, it would be effective to perform internal fixation with a bone wedge graft rather than shoulder replacement arthroplasty. Recent reports on the results of RSA are also increasing. On the other hand, recent reports suggest that good results are obtained with RSA in type 3. In type 4, RSA should be considered as a first option.

• Journal of the Korea Society of Computer and Information
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• v.15 no.10
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• pp.173-182
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• 2010

Recently, the society confronts unpredictable disasters and the aspects varies in diverse ways. As a pessimistic perception on the social safety starts emerging, the UT utilized actional system for disaster is viewed as a solution. Therefore, in this paper, I provided UT applied forecast prototype which is a portion of u-Gov's application services. Also, as one of UT applied policy subject, I distinguished and analyzed the differences between e-Gov and u-Gov and, finally, suggested u-Gov's reform in order to surpass e-Gov's limitation and amelioration for possible problems during prototype materialization.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05b
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• pp.979-982
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• 2003

본 논문에서는 I/O 인터페이스 제어 보드와 ISA 인터페이스 제어 보드, 그리고 레고 기반의 프로토타입을 통해 실시간 신발 공정 컨베이어 제어를 위한 원격 감시 및 제어 시스템을 구현하였다. 컨베이어를 실시간으로 제어하기 위하여 작업의 우선권을 사용자가 정할 수 있는 RTLinux를 사용하였으며, RTLinux 기반으로 디바이스 드라이브를 작성하였다. Client/server분산환경의 웹을 기반으로 실시간 시스템의 구현 및 테스트를 통해 프로토타입의 작동을 확인한다.

• Journal of Chest Surgery
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• v.30 no.3
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• pp.336-339
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• 1997

The surgical treatment of diseases of thoracic aorta has had much better success rate in recent years compaired to the past. Aortic aneurysms or dissections that extend along the entire thoracic aorta are usually approached in two or three stages. Recently we successfully perfofm d one-stage aortic replacement from the aortic root to the abdominal aorta in chronic DeBakey type I dissection. A 25 year-old man who had dyspnea on exertion (NYHA Fc II) and a Marfanoid feature was operated under the diagnosis of chronic type I dissection with severe aortic regurgitation. ' At operation, a huge ascending aorta with two intimal tearings was seen and the blood supply of intercostal arteries and right renal artery was done from the false lumen. Modified Bentall operation with total aortic replacement was done successfully, and the patient is being followed-up without major complications.

• Proceedings of the Korea Society of Design Studies Conference
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• 2003.05a
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• pp.12-13
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• 2003

• Korean Chemical Engineering Research
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• v.49 no.3
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• pp.338-341
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• 2011

Thin silicon ribbon was used for fabricating flexible silicon p-i-n junction devices, consisting of 100${\times}$100 arrays of pixels in 1 inch on the diagonal. Those passive matrix devices exhibited the rectification ratio $>10^{4}$ owing to smaller cross-talking current than that of p-n junction devices. P-i-n devices fabricated on silica/silicon substrates are easily detached by treatment with hydrofluoric acid and are subsequently transferred onto both PDMS and flexible PET film.

• Science of Emotion and Sensibility
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• v.5 no.1
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• pp.33-48
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• 2002

This research aimed to (1) study the possibility of DMDI (i.e. ; digitalwear based on motion-detective input technology) as apparel product in young market, (2) to develop appropriate design of DMDI. In part I of this research, a deth-interview method developed on the assumption of design ethnography, and domain analysis were applied to analyze the consumers'latent demands and needs related to DMDI. Based on the result of analysis, the seven feasible applications and six design directions for DMDI were suggested.

• Proceedings of the IEEK Conference
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• 2000.09a
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• pp.215-218
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• 2000

디지털 비디오 데이터를 효율적으로 브라우징 하는데 필요한 비디오 분할에 관한 연구가 활발하게 진행되고 있다. 본 연구에서는 비디오 데이터를 Shot단위로 분할하고, Shot내부에서 카메라 동작과 객체 움직임 분석을 이용한 sub-shot으로 분할하고자 한다. 연구 방법으로는 I-frame의 DC 영상을 이용하여 픽쳐그룹을 Shot(장면이 바뀐 경우), Move(카메라 동작,객체움직임), Static(영상의 변화가 거의 없는 경우)로 세분화하고 해당 픽쳐 그룹의 P, B-frame을 검사하여 정확한 컷 발생 위치, 디졸브, 카메라동작, 객체 움직임을 검출하게 된다. 픽쳐그룹 분류에서 정확성을 높이기 위해 계층적 신경망과 다중 특징을 이용한다. 정확한 컷 발생위치 검출하기 위해서 P, B프레임의 메크로블럭 타입을 이용한 통계적 방법을 이용하고, 디졸브, 카메라 동작, 객체 움직임을 검출하기 위해서 P, B-frame의 메크로블럭 타입과 움직임 벡터를 이용한 신경망으로 검출한다. 본 연구에서는 계층적 탐색을 이용하여 시간을 단축할 수 있고, 계층적 신경망과 다중 특징을 이용하여 픽쳐 그룹을 세분화 할 수 있고, 메크로 블록 타입과 통계적 방법을 이용하여 정확한 컷 검출을 할수 있고, 신경망을 이용하여 디졸브, 카메라 동작, 객체움직임을 검출 할 수 있음을 확인한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.391-392
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• 2019

본 논문에서는 타임스탬프의 위변조를 위한 안티포렌식의 도구로 사용되는 타임스탬프 변경도구들에 기능에 대하여 디지털 포렌식 관점에서 분석을 수행한다. 타임스탬프 변경도구들로써 수행할 수 있는 타임스탬프 변경작업의 범위와 특징을 찾아본다. NTFS파일시스템에서 사용하는 타임스탬프 변경도구들의 기능상의 분류는 그것들이 변경할 수 있는 타임스탬프 종류와 정밀도를 기준으로 정하고 그 도구들을 사용한 후에 기록된 타임스탬프의 특징들을 디지털 포렌식 관점에서 분석을 수행하기로 한다. 이 연구에서의 분류 형태 중 타입 I은 FileTouch.exe, SKTimeStamp, BulkFileChanger류의 도구들과 타입 II는 timestomp, 타입 III은 SetMACE로 분류하고 각 도구들을 사용한 후에 변경된 타임스탬프들의 특징을 살펴보기로 한다.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.4
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• pp.409-416
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• 2014

In H/W implementation for the finite field, the use of normal basis has several advantages, especially the optimal normal basis is the most efficient to H/W implementation in $GF(2^m)$. The finite field $GF(2^m)$ with type I optimal normal basis(ONB) has the disadvantage not applicable to some cryptography since m is even. The finite field $GF(2^m)$ with type II ONB, however, such as $GF(2^{233})$ are applicable to ECDSA recommended by NIST. In this paper, we propose a bit-parallel multiplier over $GF(2^m)$ having a type II ONB, which performs multiplication over $GF(2^m)$ in the extension field $GF(2^{2m})$. The time and area complexity of the proposed multiplier is the same as or partially better than the best known type II ONB bit-parallel multiplier.