• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2003년도 봄 학술발표논문집 Vol.30 No.1 (A)
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• pp.272-274
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• 2003

유한체 GF(2$^{m}$ ) 상의 산술 연산 중 곱셈 연산의 효율적인 구현은 암호이론 분야의 어플리케이션에서 매우 중요하다. 본 논문에서는 All-One 다항식에 의해 정의된 GF(2$^{m}$ ) 상의 효율적인 Bit-Parallel 정규기저 곱셈기를 제안한다. 게이트 및 시간 면에서 본 논문의 곱셈기의 complexity는 이전에 제안된 같은 종류의 곱셈기 보다 낮거나 동일하다. 그리고 본 논문의 곱셈기는 이전 곱셈기 보다 더 모듈적이어서 VLSI 구현에 적합하다.

• 복식문화연구
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• 제24권3호
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• pp.287-300
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• 2016

The purpose of this study was to review materials that could provide basic data about sports brassieres. In this study, 486 sports brassieres were collected online from 31 brands between November 2015 and February 2016. First, the comparison of compression and encapsulation in sports brassieres identified many different styles. The characteristics of compression brassieres included a cut cup, the front center height of a full cup, round neckline, short front hem, all in one shoulder strap with a patterned racerback design, all in one closure, no wire, and separation cup styles. The characteristics of encapsulation brassieres included a V-shape neckline, mixed round shoulder strap design, back closure, and all in one cup. Second, the comparison of domestic and international sports brassieres sorted the items differently. The characteristics of domestic products included compression brassieres, non-cut cup, the front center height of a full cup, round neckline, short front hem, an all in one shoulder strap with a patterned round design, all in one closure, no wire, and a separation cup. The characteristics of international products included a cut up, racerback shoulder strap design, and an all in one cup. Third, the analysis of domestic and international sports brassieres sizes found that six options were available for domestic compression sports brassieres and nine sizes were available for international products. Domestic encapsulation sports brassieres offered five under bust sizes and five cup sizes. International products offered eight under bust sizes and sixteen cup sizes.

• 한국정보과학회논문지:시스템및이론
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• 제31권1_2호
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• pp.51-58
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• 2004

대부분의 공개키 기반 암호시스템은 유한체 $GF(2^m)$ 상의 산술 연산들을 기반으로 구축된다. 이들 연산 중 덧셈을 제외한 다른 연산들은 곱셈 연산을 반복하여 계산되므로, 곱셈 연산의 효율적인 구현은 공개키 기반 암호시스템에서 매우 중요하다. 본 논문에서는 All-One Polynomial에 의해 정의된 $GF(2^m)$ 상의 효율적인 Bit-Parallel 정규기저 곱셈기를 제안한다. 게이트 및 시간적인 면에서 본 곱셈기의 복잡도(complexity)는 이전에 제안된 같은 종류의 곱셈기 보다 낮거나 동일하다. 또한, 본 논문의 곱셈기는 아키텍처가 규칙적(regular)이어서 VLSI 구현에 적합하다.

• 대한의용생체공학회:의공학회지
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• 제40권5호
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• pp.197-205
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• 2019

The existing Extracorporeal membrane oxygenation(ECMO) and Cardiopulmonary bypass system(CPB) have been developed and applied to various devices according to their respective indications. However, due to the complicated configuration and difficult usage method, it causes inconvenience to users and there is a risk of an accident. Therefore, smart all-in-one cardiopulmonary circulation device is being developed recently. The smart all-in-one cardiopulmonary assist device consists of a blood pump for cardiopulmonary bypass, a blood oxidizer for cardiopulmonary bypass, a blood circuit for cardiopulmonary bypass, and an artificial cardiopulmonary device. It is an integrated cardiopulmonary bypass device that can be used for a variety of purposes such as emergency, intraoperative, post-operative intensive care, and long-term cardiopulmonary assist, combined with CPB used in open heart surgery and ECMO used when patient's cardiopulmonary function does not work normally. The smart all-in-one cardiopulmonary assist device does not exist as a standard and international standard applicable to advanced medical devices. Therefore, in this study, we will refer to the International Standard for Blood Components, the International Standard for Blood, the Guideline for Blood Products, and prepare applicable performance and safety guidelines to help quality control of medical devices, and contribute to the improvement of the health of people. The guideline, which is the result of conducted a survey of the method of safety and performance test, is based on the principle of all-in-one cardiopulmonary aiding device, related domestic foreign standards, the status of domestic and foreign patents, related literature, blood pump(ISO 18242), blood oxygenator (ISO 7199), and blood circuit (ISO 15676) for cardiopulmonary bypass.The items on blood safety are as follows: American Society for Testing and Materials ASTM F1841-97R17), and in the 2010 Food and Drug Administration's Safety Assessment Guidelines for Medical Assisted Circulatory Devices. In addition, after reviewing the guidelines drawn up through expert consultation bodies including manufacturers / importers, testing inspectors, academia, etc. the final guideline was established through revision and supplementation process. Therefore, we propose guidelines for evaluating the safety and performance of smart all-in-one cardiopulmonary assist devices in line with growing technology.

• Restorative Dentistry and Endodontics
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• 제31권6호
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• pp.445-451
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• 2006

이 연구에서는 미세인장결합강도 실험과 주사전자현미경을 이용하여 unground enamel에 대한 all-in-one adhesive의 1회 또는 2회 적용에 따른 효과를 평가하였다. 발거된 하악 대구치의 설측 치관부를 사용하여 3개씩 5개의 군으로 분류하였다. SE군은 Clearfil$^{tm}$ SE Bond를 적용하였다. LP1 군, LP2 군은 Adper Prompt L-Pop$^{tm}$을 각각 1회 , 2회 적용하였다. XN1 군, XN2 군은 Xeno$^{R}$III를 각각 1회, 2회 적용하였다. 그런 다음 복합 레진 Z100을 적층 충전하였다. 법랑질 표면의 접착제를 아세톤으로 제거하고 주사 전자 현미경을 이용하여 산 부식 양상을 관찰하였다 미세인장결합강도 측정을 위해 표본을 절단하여 레진과 치아의 접착 계면이 1 mm$^2$이 되도록 하여 실험하였다. 실험의 결과는 One-way ANOVA를 사용해 분석한 다음 Duncan's post-hoc test로 사후 검정 하였다. 본 연구의 결과 all-in-one adhesive의 1회와 2회 적용간에는 유의한 차이가 나타나지 않았으며 two-step self-etching adhesive와 all-in-one adhesive의 산 부식 양상 모두 얕고 불규칙 하였다.

• 대한수학회지
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• 제48권1호
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• pp.63-82
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• 2011

On the hyperbolic space $D^n$, codimension-one totally geodesic foliations of class $C^k$ are classified. Except for the unique parabolic homogeneous foliation, the set of all such foliations is in one-one correspondence (up to isometry) with the set of all functions z : [0, $\pi$] $\rightarrow$ $S^{n-1}$ of class $C^{k-1}$ with z(0) = $e_1$ = z($\pi$) satisfying |z'(r)| ${\leq}1$ for all r, modulo an isometric action by O(n-1) ${\times}\mathbb{R}{\times}\mathbb{Z}_2$. Since 1-dimensional metric foliations on $D^n$ are always either homogeneous or flat (that is, their orthogonal distributions are integrable), this classifies all 1-dimensional metric foliations as well. Equations of leaves for a non-trivial family of metric foliations on $D^2$ (called "fifth-line") are found.

• Journal of Chest Surgery
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• 제19권4호
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• pp.595-605
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• 1986

From February 1986 through September 1986, the authors have experienced 6 cases of coronary artery bypass graft for patients with unstable angina. There were five males and one female who ranged from 39 to 65 years [mean, 53.3 years]. The extent of coronary disease was as follows: one-, two- and three-vessel diseases, all 2 cases respectively, and among them, 1 case had left main disease. Distal anastomoses were performed first with using saphenous vein grafts as conduits in all cases and sequential bypass methods were employed in 5 cases. Numbers of vein grafts were two in 2 cases and one in 4 cases. The mean time wasted for one distal anastomosis was 36 minutes. Post operative complications were leg-wound disruption [2 cases], transient psychosis [1 case] and perioperative myocardial infarction [MI] [1 case]. Sixty three year-old male patient associated with cardiomegaly, prior MI, ventricular arrhythmia, cardiac dysfunction and endocrinologic diseases preoperatively was expired in the operating room due to perioperative Ml. All survivors were asymptomatic and on discontinuing medical therapy on follow-up varying from 1 to 8 months.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2017년도 제48회 춘계학술대회논문집
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• pp.1045-1047
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• 2017

본 연구는 고체 추진기관에 적용되는 내열재를 기존의 autoclave 공법이 아닌 hot press molding을 포함한 B/D 성형공법으로 제작하는데 초점을 두고 있다. EPDM/kevlar를 기본 조성으로 내열재 원료가 구성된다. 우선 부츠 내열재는 금형을 사용하여 가황 상태로 제작한다. 연소관에 일체형 내열재로 성형하기 위하여 두 개의 내열재 사이에 테이프를 삽입하였고, bladder를 사용하여 압력과 온도를 상승시켜 제작하였다.

• 한국산업정보학회논문지
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• 제8권3호
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• pp.85-90
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• 2003

본 논문에서는 GF(2$^{m}$ ) 상에서 효율적인 공간 복잡도를 가진 LFSR(Linear Feedback Shift Register) 구조 기반의 모듈러 곱셈기를 제안한다. 먼저, 공개키 암호화 시스템의 기본 연산인 모듈러 지수승을 위한 지수승 알고리즘을 살펴보고 이를 위한 기본 구조를 제안한다. 특히, 본 논문은 이러한 지수기를 설계하기 위한 기녈 구조로서 효율적인 모듈러 곱셈기를 제안한다. 제안된 구조는 기약다항식으로 모든 계수가 1인 속성의 AOP(All One Polynomial)를 이용하며 구조복잡도 면에서 기존의 구조들보다 훨씬 효율적이다.

• 호남수학학술지
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• 제40권2호
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• pp.211-218
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• 2018

Let R be a commutative Noetherian ring, a be an ideal of R and M be an R-module. It is shown that if $Ext^i_R(R/a,M)$ is minimax for all $i{\leq}{\dim}\;M$, then the R-module $Ext^i_R(N,M)$ is minimax for all $i{\geq}0$ and for any finitely generated R-module N with $Supp_R(N){\subseteq}V(a)$ and dim $N{\leq}1$. As a consequence of this result we obtain that for any a-torsion R-module M that $Ext^i_R(R/a,M)$ is minimax for all $i{\leq}dim$ M, all Bass numbers and all Betti numbers of M are finite. This generalizes [8, Corollary 2.7]. Also, some equivalent conditions for the cominimaxness of local cohomology modules with respect to ideals of dimension at most one are given.