• 대한수학회보
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• 제55권1호
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• pp.311-317
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• 2018

Let (R, m) be a commutative Noetherian local ring and I be an ideal of R. In this paper it is shown that if cd(I, R) = t > 0 and the R-module $Hom_R(R/I,H^t_I(R))$ is finitely generated, then $$t={\sup}\{{\dim}{\widehat{\hat{R}_p}}/Q:p{\in}V(I{\hat{R}}),\;Q{\in}mAss{_{\widehat{\hat{R}_p}}}{\widehat{\hat{R}_p}}\;and\;p{\widehat{\hat{R}_p}}=Rad(I{\wideha{\hat{R}_p}}=Q)\}$$. Moreover, some other results concerning the cohomological dimension of ideals with respect to the rings extension $R{\subset}R[X]$ will be included.

• 대한수학회논문집
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• 제38권3호
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• pp.649-661
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• 2023

Let 𝓜 be a stable Serre subcategory of the category of R-modules. We introduce the concept of 𝓜-minimax R-modules and investigate the local-global principle for generalized local cohomology modules that concerns to the 𝓜-minimaxness. We also provide the 𝓜-finiteness dimension f^𝓜_I (M, N) of M, N relative to I which is an extension the finiteness dimension f_I (N) of a finitely generated R-module N relative to I.

• 구강회복응용과학지
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• 제17권4호
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• pp.231-244
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• 2001

This study was conducted to observe the effect on appendage muscle strength according to increase in occlusal vertical dimension. For this study, ten males with a mean age of 21 were selected. The subjects had a complete or almost complete set of natural teeth and reported no subjected symptoms of pain or dysfunction in the masticatory system. The tested occlusal splints were made at the position of increased occlusal vertical dimension of 2mm, 3.5mm, and 5mm from the ICP. Before and after wearing occlusal splints, the appendage muscle strength were tested by CybexII Dynamometer in each subject. The results were as follows : 1. When occlusal vertical dimension was increased, most of mean muscular strength values were increased except for those of supination and pronation of forearm at the position of 5mm increased occlusal vertical dimension. 2. The statistical analyses demonstrated that the increased occlusal vertical dimension position to be significantly stronger than intercuspal position for the muscle strength of the flexion and extension of hip, supination of forearm, external and internal rotation of knee, dorsiflexion and plantarflexion of ankle (p<0.05). 3. At the position of 3.5mm increased vertical dimension displayed the highest mean muscluar strength value than other positions. 4. Statistically demonstrated values, except for supination of forearm, internal rotation of shoulder, were related to lower appendage. Therefore splint was more effective on lower appendage than upper appendage to make muscle strength increased. 5. The mean increased rate of muscular strength tested on knee(57%), ankle(42%), and wrist(20%) were higher than hip(31%), elbow(14%), and shoulder(17%).

• 한국지리정보학회지
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• 제6권4호
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• pp.37-50
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• 2003

이 논문은 객체관계형 데이터베이스 시스템의 객체지향적 특성인 추상데이터타입과 속성 및 연산의 상속성을 이용하여 구현가능한 시공간 질의 확장에 대하여 기술한다. 실세계의 공간 객체는 시간상에서 변화한다. 시공간 데이터베이스는 이러한 객체의 이력을 위해 공간 차원뿐만 아니라 시간차원을 관리하는 것을 지원한다. 제시된 시공간 데이터베이스는 공간 및 시간 차원을 각각 최상위 클래스로 구성하고, 시공간 클래스들은 이 클래스들을 상속 및 확장하여 구현되었다. 이 연구에서 수행된 시공간 데이터베이스를 위한 시간과 공간 확장은 기존 시스템에서 시공간 데이터베이스 시스템으로 전환을 용이하게 할 뿐 아니라 새로운 시공간 데이터베이스의 지원을 위한 기존 데이터베이스의 변경을 필요하지 않은 장점을 갖는다.

• 환경생물
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• 제38권4호
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• pp.507-517
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• 2020

본 연구에서는 외부형태적으로 매우 비슷한 참조기(Larimichthys polyactis) 와 부세(L. crocea)의 두 종 간 구분을 위해 계측형질 분석을 포함한 몇가지 기법들을 수행하였다. 총 48개의 계측형질 중 4개의 유의한 차이를 보이는 계측형질이 파악되었으며(p<0.05) classical dimension에서는 유의한 차이를 보이는 계측형질은 없었다(p>0.05). 오히려, 2가지의 truss dimension(Insertion of dorsal fin base origin of pectoral fin base와 Origin of anal fin base - origin of pectoral fin base)와 2가지의 head part dimension (Most anterior extension of the head - above of eye와 Above of eye posterior aspect of operculum)에서는 유의한 차이가 나타났다(p<0.05). 하지만, 이러한 4가지 계측형질 중 head part dimension의 Above of eye - posterior aspect of operculum의 계측형질을 제외한 나머지 3가지 계측형질들에서 부세가 참조기에 비해 더 큰 수치를 나타내었다(p<0.05). X-ray 분석 결과 curved vertebral column에서 부세는 45.1±2.34°로 참조기의 38.4±1.82°에 비해 8.4% 더 큰 수치를 나타내었다(p<0.05). 머리부위의 표피를 제거한 후의 유상돌기는 두 종에 모두 존재하여 일반적으로 참조기에서만 유상돌기가 존재한다고 알려진 바와는 달리, 유상돌기는 두 종을 구분하기 위한 형질로 볼 수 없었다. 본 연구 결과는 참조기와 부세에서 일부 외부 체형에 의해 명확히 구분 가능함을 시사한다.

• 한국통신학회논문지
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• 제39A권2호
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• pp.69-76
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• 2014

MIMO 시스템은 통신 시스템의 채널 용량을 증가시키기 위해서 다양한 분야에서 사용된다. 그러나 이러한 통신 시스템은 다수의 RF 단을 필요로 하기 때문에 안테나 소형화에 문제가 있다. 게다가 다수의 RF 단으로 인하여 아날로그 회로에서의 전력 소모가 증가하고, RF 단의 간섭으로 인하여 통신 효율이 심각하게 저하된다. 이러한 이유 때문에 단일 RF 단을 가지면서도 MIMO 통신이 가능한 BS-MIMO 통신 방식이 제안되었다. BS-MIMO 시스템은 기본적으로 ESPAR 안테나를 사용한다. 기존의 ESPAR 안테나는 5-element 구조를 가지고 있으며, $3{\times}3$ MIMO 전송 까지만 가능하다. 그러므로 MIMO 차원을 확장시키기 위해서는 ESPAR 안테나의 구조 확장이 필수적이다. 본 논문에서는 단일 원 형태의 ESPAR 안테나의 구조 확장을 통해서 BS-MIMO 의 차원을 기존 MIMO 기술처럼 증가시킬 수 있음을 보였다. 설계의 예로써, 13-ESPAR 안테나를 사용하면 $7{\times}7$ BS-MIMO 전송이 가능함을 보였다. 또한 기생 배열안테나의 수가 2개씩 증가할수록 전송 가능한 MIMO 차원이 일씩 증가한다.

• 한국운동역학회지
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• 제16권3호
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• pp.33-41
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• 2006

This study was to analysis three dimension angle of the upper extremity segment and trunk to putting the protector in women bowlers. For this study, the subjects selected 4 players of national and university team. All subjects putted in the same wrist support to satisfy the experiment conditions. To get three dimensions position coordination of swing motion used for 6 ProReflex MCU 240 camera produced by Qualisys. After position coordination calculation, Three dimension angle of the trunk and the upper extremity segment calculated for Matlab 6.5. the result is following; In the trunk motion, there were little differences among the subjects in a flexion and extension change. There were a lot of differences in motion change of the abduction-adduction and internal-external rotation, but the motion types translated to the adduction-abduction-adduction and from the internal rotation toward the external rotation. In the upper arm segment the Flexion and extension showed a consistent motion in the down swing and up swing phase. And the motion change of abduction-adduction and pronation-supination showed a abduction-adduction-abduction and pronation-supination change during swing phase. In the forearm segment changes, it showed a lot of differences among the subjects and a similar change with the upper arm segment. Especially, the hand segment showed a supination motion from the backswing apex to release phase, but for increasing a rotation velocity of ball, the hand segment translated toward pronation in follow throw phase.

• 한국실내디자인학회논문집
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• 제17권3호
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• pp.148-155
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• 2008

The following research focuses on the formation method of digital space by organistic line extension among various digital formation methods. The paper reflects on the meaning and concept of today's digitalism which enables the application of complex organistic system on space through advanced technology. It also explores the concept of a line in topology which differs in assumptive meaning from traditional Euclidian geometry. The findings of the research are that first, digital space is not optimized, but is a tentative formation in process. A digital space encompasses characteristics such as infinity, possibility, potential, asymmetry, and the force of virtuality such characteristics are expressed through a moving surface constantly changing with direction. Second, a digital space formed by line extension is inseparable and durable since no measurement or dimension is predetermined. Furthermore, its sense of direction and flexibility gives it a feeling of a living organism. Third, a Euclidian methodology called 'NURBS' is being developed to express such a dynamic digital space; this is reflected through three elements, control point, weights, and knots to effectively reflect the characteristics of virtuality. The opportunities of digital space are infinite, and the possibilities of formation methods likewise vast.

• 한국의류학회지
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• 제29권7호
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• pp.926-937
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• 2005

The analysis category of Art to Wear was text analyzed from the research material of 100 projects put together by fashion specialist. The conclusion of Art to Wear was comprehended the general features of it were compared and analyzed from a semiotics context. According to this analysis, the formative features of modern Art to Wear is categorized into three different dimensions from a semiotics light. The formative features of modem Art to Wear in the light of syntactic dimension was divided as an open constructed shape of Space Extension, non-typical Deformation, Geometrical Plasticity. The formative features of modem Art to Wear in the light of semantic dimension express symbolic meaning through metaphorical sign. These sign reflect the body image of the life and death and its objective of Abjection, Hybrid of discultural appearance and the image of Hyper-reality, which are features used to comprehend the inner meaning. The formative features of modem Art to Wear in the light of pragmatic dimension divided the artist emotion and meaning system delivered by Emotive Image, the Phatic Image that arouse inner signification and the Poetic Image which contain artistic and aesthetic meaning within it.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2008년도 춘계학술대회논문집
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• pp.362-368
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• 2008

The purpose of this is providing employees who take charge of operation and maintenance at power plant with education contents that can be used for self-studying and on the job training through their computers. We developed the education contents for making actually application possible using this piping and instrument diagram(P&ID), operation and maintenance procedure, unit specification and material of 500MW thermal power plant those include unit equipment 3-dimension animation, character and narration performance considering making teaching plan, flexibility, extension, reuse, maintenance and focusing on user. Specially, we developed the flash type education contents about power plant operation based on the plant 3-dimension animation and the spot real picture concerned about new generation trend for power plant incoming employees actual knowledge. in addition, this contents apparently contributed to improve the level of employees technical power as distributed to employees.