• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.1
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• pp.461-464
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• 2004

In this paper, the elastic epoxy added elastomer having viscoelasticity to existing epoxy was measured thermal, structural properties through TGA(Thermogravimetric Analysis) and FESEM(Field Emission Scanning Electron Microscope). Specimens were made of dumbbell forms by the ratio of 5[phr], 10[phr], 15[phr], and 20[phr] by regulation with elastomer contents. The measurement temperature dimensions of TGA were $0[^{\circ}C]\;to\;800[^{\circ}C]$, and rising temperature was $5[^{\circ}C/min]$. And we observed structure through FESEM at the magnification of 1000times with the voltage of 15[kV] after breaking by quenching specimens. As thermal analysis results, we could know that thermal and structural properties was improved quantity according to decrease of elastomer contents. In general, thermal, structural properties of 15[phr] was excellent among the specimens.

• 한국수자원학회논문집
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• 제35권6호
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• pp.729-736
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• 2002

개수로의 설계에 있어서 등류수심의 산정은 가장 기본적인 요건이며, 인공수로를 구축할 경우 일반적으로 최량 수리단면은 가장 경제적인 단면이 된다. 따라서 최량 수리단면의 등류수심 산정은 거의 모든 수로 설계의 핵심적인 요소라 할 수 있다. 개수로 마찰력을 산정하기 위하여 일반성이 확보된 지수형 마찰계수 산정식을 도입하였다. 삼각형, 사각형 및 제형 등 거의 모든 형태의 수로에 대한 등류수심의 산정을 위하여 형식이 통일되고 양해적으로 해석이 가능한 산정식을 도출하였다. 또한 이들 등류수심 산정식은 관로설계에서 도출된 관경 산정식과 형식이 일치함을 확인하였다.

• 동의생리병리학회지
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• 제20권5호
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• pp.1346-1349
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• 2006

Cystitis is a inflammation that forms at the cystic mucosa those main symptom is urinary disturbance based on the bladder stimulated. It is liable to be chronicity and difficult to give medical treatment. Especially, Chronic Relapsing Cystitis(CRC) is the continuing and repeating cystitis without abnormality of urinalysis. This study was peformed on a 46-year-old female patient with CRC who was diagnosed as Norim(勞淋) due to Bisinyangheo(脾腎陽虛) and Hansan(寒疝) due to Hanchekanmaek(寒滯肝脈). The patient was treated with mainly Cheongsanboki-tang(淸疝補氣湯). Clinical symptoms and general conditions are improved after treatment and more extensive researches are needed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권8호
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• pp.3789-3808
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• 2017

This paper studies a multi-antenna wireless relay network in the presence of a jammer. In this network, the source node transmits signals to the destination node through a multi-antenna relay node which adopts the amplify-and-forward scheme, and the jammer attempts to inject additive signals on all antennas of the relay node. With the linear beamforming scheme at the relay node, this network can be modeled as an equivalent Gaussian arbitrarily varying channel (GAVC). Based on this observation, we deduce the mathematical closed-forms of the capacities for two special cases and the suboptimal achievable rate for the general case, respectively. To reduce complexity, we further propose an optimal structure of the beamforming matrix. In addition, we present a second order cone programming (SOCP)-based algorithm to efficiently compute the optimal beamforming matrix so as to maximize the transmission rate between the source and the destination when the perfect channel state information (CSI) is available. Our numerical simulations show significant improvements of our propose scheme over other baseline ones.

• 한국문헌정보학회지
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• 제37권2호
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• pp.89-105
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• 2003

본 논문에서는 대량의 웹 문서로부터 연관된 지식정보를 검색하기 위한 전문 검색엔진을 개발하기 위하여 텍스트에서 추출된 전문 용어를 효율적으로 클러스터링하기 위한 방법을 제안하고자 한다. 즉, 일반적인 용어들간의 무의미한 연관 규칙이 양산되는 것을 방지하기 위하여 전문 용어로 구성된 지식베이스 테이블을 이용하여 의미 있는 용어들간의 연관 규칙을 생성한다. 연관 규칙은 하나의 논문에서 사용된 전문 용어들의 집합을 트랜잭션 단위로 구성하여 Apriori 알고리즘을 적용하여 생성된다. 하나의 용어로부터 생성된 연관 규칙 집합은 해당 전문 용어와 관련된 클러스터로 구성된다.

• 보건행정학회지
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• 제11권2호
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• pp.16-28
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• 2001

This study was to compare multidimensional outcomes of patient's satisfaction after cataract surgery and to identify factors influencing satisfaction after operation. Patient's satisfaction was measured with three dimensions : interpersonal care, physician explanation and hospital care. Overall satisfaction was measured as means of three dimensional scores. For the study, a prospective study was performed with 389 patients who had undergone cataract surgery for either one eye or both eyes. The surgery was performed by 20 ophthalmologists who were practicing at university hospitals and general hospitals. Patients were interviewed and clinical data (the visual acuity of operated eye, visual function, symptom score and satisfaction with vision) were obtained. The doctors were questioned with self-reported questionnaire forms. Medical records were also examined to understand surgery Process. The survey was conducted before(389) and after operation(327). Alter excluding cases with incomplete data, 3n cases were enrolled In this study. Both the overall satisfaction and the satisfaction with physician explanation increased after the operation whereas the satisfaction with interpersonal care and hospital care did not change significantly. Multiple regression analysis showed that the level of education, baseline satisfaction scores and the degree of vision improvement were statistically significant variables. The preoperative lower level of education, higher level of overall satisfaction (interpersonal care, physician explanation, hospital care scores) and the more the satisfaction with vision improvement were associated with the improvement of postoperative satisfaction scores.

• 제어로봇시스템학회논문지
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• 제11권2호
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• pp.127-136
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• 2005

In this paper, a new architecture and comprehensive design methodology of genetically optimized Rule-based Fuzzy Polynomial Neural Networks(gRFPNN) are introduced and a series of numeric experiments are carried out. The architecture of the resulting gRFPNN results from asynergistic usage of the hybrid system generated by combining rule-based Fuzzy Neural Networks(FNN) with polynomial neural networks (PNN). FNN contributes to the formation of the premise part of the overall rule-based structure of the gRFPNN. The consequence part of the gRFPNN is designed using PNNs. At the premise part of the gRFPNN, FNN exploits fuzzy set based approach designed by using space partitioning in terms of individual variables and comes in two fuzzy inference forms: simplified and linear. As the consequence part of the gRFPNN, the development of the genetically optimized PNN dwells on two general optimization mechanism: the structural optimization is realized via GAs whereas in case of the parametric optimization we proceed with a standard least square method-based learning. To evaluate the performance of the gRFPNN, the models are experimented with the use of several representative numerical examples. A comparative analysis shows that the proposed gRFPNN are models with higher accuracy as well as more superb predictive capability than other intelligent models presented previously.

• 대한조선학회논문집
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• 제31권4호
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• pp.15-22
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• 1994

컴퓨터를 이용하여 선박의 선형설계 작업을 개선하고자 하는 노력은 컴퓨터가 개발되어 이용되기 시작한 1960대부터이다. 우리나라에서도 FORAN 등의 도입된 소프트웨어를 통해 일찍부터 관심을 가졌으나, 자체 개발을 위한 활동은 최근에야 활발해지고 있다. 선형설계 시스템의 개발에 제한된 개발자원을 효율적으로 이용하기 위해서는 업무의 분담과 통합을 위한 공통의 개발모델이 필요하다. 이 글에서는 국내외의 관련연구, 특히 조선 이외 분야의 연구를 포함하여, 기술개발 현황을 분석하고, 이를 바탕으로 전산 선형설계 시스템의 개발을 위한 하나의 기준모델을 제시하였다. 이 과정에 전산선형설계를 구성하는 요소기능들이 새롭게 분류되었으며, 이들 간의 조합을 통해 기준모델을 구성하였다.

• 대한조선학회논문집
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• 제53권2호
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• pp.92-100
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• 2016

A comparative method is applied to evaluate well-known formulas for estimating the size of supercavities of axisymmetric cavitators for the supercavitating underwater vehicle. Basic functional forms of these formulas are derived first for the cavity diameter from a momentum integral estimate and second for the cavity length from an asymptotic analysis of inviscid supercavity flows. The length and the diameter of axisymmetric supercavities estimated by each formula are compared, with available experimental data for a disk and a 45° conical cavitators, and also with computational results obtained by a CFD code, ‘fluent’, for conical cavitators of wide range of cone angles. Results for estimating the length and the diameter of the supercavities show in general a good agreement, which confirms the size of the supercavities for disk and conical cavitators can be estimated accurately by these simple formulas of an elementary function of cavitation number and drag coefficient of the cavitator. These formulas will be useful for from conceptual design of the cavitator to real-time control of the supercavitating underwater vehicle.

• 한국가정과학회지
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• 제9권4호
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• pp.27-39
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• 2006

Surrealism, appeared in the beginning of the 20th century and affected almost all art fields, is one of the most representative art trends. Surrealism, not restricted from any rules and traditions but tried to produce a new appreciations in the world of dream and unconsciousness, also has affected fashion. In this paper, I have tried to find out how the surrealism has been expressed in the modern fashion, especially in Thierry Mugller's design. Thierry Mugler is one of the most famous designers who have expressed surrealism in their fashion designs. I have classified his designs and researched them by the application into the human body and the nature, by the metaphor and transformation of things, and by the metamorphosis of location and an optical illusion. It was based on Depaysement which is one of the ways in surrealistic expressions. The result of the study is followings; First, surrealism made fashion design possible to creat unlimitedly and sublimated it anew modern beauty by attempting the varieties of the fashion, not restricted from any rules and traditions. Second, surrealism made the general public to complete anew recognition and valuation about fashion by expressing the external character and the internal meaning on the clothes. Third, surrealism made people to recognize, which clothes is not simply wearing thing but also one of the art expression forms.