• 한국수학교육학회지시리즈B:순수및응용수학
• /
• 제14권4호
• /
• pp.283-287
• /
• 2007

An extension of the contraction mapping theorem is provided in a Banach space setting to approximate fixed points of operator equations. Our approach is justified by numerical examples where our results apply whereas the classical contraction mapping principle cannot.

• 한국추진공학회지
• /
• 제21권4호
• /
• pp.52-62
• /
• 2017

램제트 부스터로 사용되는 무노즐 부스터의 특성을 알아보기 위한 연구를 수행하였다. 무노즐 부스터는 수축-팽창되는 고정된 노즐목이 없어 일반적인 모터보다 압력 및 추력에 관련된 성능이 감소한다. 이를 보완하기 위해 금속연료로 알루미늄을 사용하여 밀도비추력이 최대인 고성능 추진제를 개발하였고, 지상연소시험을 통해 세장비(L/D)에 따른 성능 특성을 알아보았다. 동등한 추진제와 동일한 세장비에서 고정된 노즐목을 사용한 일반적인 모터와 비교시 비추력은 75%까지 나타났으나, 동일 평균압력 내에서는 85%까지 나타날 것으로 예측된다.

• 영어어문교육
• /
• 제8권2호
• /
• pp.131-150
• /
• 2003

The purpose of this paper is to provide two levels of conceptualization of a category such as an absolute category in semantic level and a relative category in pragmatic level on the basis of Aristotelian category theory and prototype category theory. I do not intend to criticize classical category theory and prototype category theory but to show that these two types of category are applied to the different world. Aristotelian categorization is an absolute category because it is based on the possible world called the meta-world and it has an absolute truth value. The members of an absolute category is presented as a set. There is a clear boundary between members and non-members because they are distinguished by the absolute criteria An absolute category is semantic conceptualization. This absolute category is changed into a relative category when it is applied in the real world. A relative category which corresponds to a prototype category is based on the real world called the object world and it has a relative truth value. Here individuals are categorized by the cognition and perception of human beings. A relative category is pragmatic conceptualization. In conclusion, while classical categories which are called absolute categories represent sentence meaning, prototype categories which are called relative categories represent utterance meaning.

• 고전문학과교육
• /
• 제35호
• /
• pp.195-219
• /
• 2017

자찬묘지명은 자신의 죽음을 상정하여 자신의 삶을 자신이 직접 쓴 묘지명으로서, 묘지명의 내용 요소를 수용하되, 지행(志行)의 포폄(褒貶)에서는 칭찬[褒]보다는 나무람[貶]이 두드러진 양식이다. 이러한 자찬묘지명에 드러난 창작 동기를 왜, 언제 짓느냐는 관점으로 구분하여 내적 창작 동기와 외적 창작 동기를 살펴보았다. 내적인 창작 동기는 외부의 과장된 평가에 대한 반발이며, 이는 곧 나에 대한 진실을 추구하고자 하는 의식의 반영이라 할 수 있다. 한편 외적인 창작 동기는 정치적 탄핵이나 가족의 상실, 임종과 같이 원치 않은 외부적인 환경 변화에 대응하여 생긴 불평지심이다. 자찬묘지명은 분명 과거의 글이지만, 오늘날 노인 자서전 쓰기 교육에 시사하는 바가 있다. 자찬묘지명의 내용 요소가 오늘날 독자에게 낯설 듯, 현대의 노인 자서전 쓰기의 내용 요소도 타자화하여 점검할 필요가 있다. 아울러 자연적으로 이루어진 협동 작문의 산물인 자찬묘지명에서 협동 작문의 방향을 찾을 수 있다.

• Steel and Composite Structures
• /
• 제48권3호
• /
• pp.321-333
• /
• 2023

This paper proposes a comprehensive investigation on lateral stiffness of corner-supported steel modular frame using splice connection. A full-scale modular frame with two stacked steel modules under lateral load is tested. Ductile pattern in the transfer of lateral load is found in the final failure mode. Two types of lateral stiffness, including tangent stiffness and secant stiffness, are defined from the load-displacement due to the observed nonlinearity. The difference between these two types of stiffness is found around 20%. The comparisons between the experimental lateral stiffness and the predictions of classical methods are also conducted. The D-value method using hypothesis of independent case is a conservative option for predicting lateral stiffness, which is more recommended than method of contraflexural bending moment. Analyses on two classical short-rod models, including fix-rod model and pin-rod model, are further conducted. Results indicate that fix-rod model is more recommended than pin-rod model to simplify splice connection for simulation on lateral stiffness of modular frame in elastic design stage.

• 복식문화연구
• /
• 제13권6호통권59호
• /
• pp.960-976
• /
• 2005

Classicism pursued beauty comprised of a perfect form, and beauty was perceived as a state of sufficiency. Accordingly, a completed and permanent beauty was sought after; as a result, a perfect and flawless form became the mainstream, and there was an effort to visualize the eternal proportional perfection. In classicism, forms were perfectly embodied with systematic inevitability and absolute inflexibility, by which an extremely clear aspect appeared. This study analyzes a classical construction paradigm in modern fashion according to the five categories: 'Harmony and order by numerical proportion', 'Clear form', 'Simplification of form and two-dimensional Seh-form', 'Completed contracture structure', and 'Pluralistic unification', and the respective formative characteristics are as follows. First, in terms of the formative aspect of modern fashion,'Harmony and order by numerical proportion' results from thorough observance of extreme and golden section (proportion of 5 :8) which was an aesthetic standard of beautiful body in classicism. Second, 'Clear form' appears in clothes as individual clearness of structural elements expressing each part of body, and shows a well-established form possible to be grasped with equal and clear contour line. Third,'Simplification of form and two-dimensional Seh-form' comes out as form composition, single line, single layer structure, two-dimensional form and arrangement of elements of clothes through the front viewpoint caused by 2D diagramming work while fashion-designing and producing. Also, it is seen that two-dimensional proportion which is composed of sections through various harmonious lines and sides according to the simple two-dimensional compatibility principle is accomplished. Fourth, 'Completed contracture structure' emerges as an expression of stationariness, in other words, fixation of an overall impression. This is a tendency that the overall form is grasped as a fixedly intact shape without a big change of the silhouette of clothes. Fifth, 'Pluralistic unification' means that it respectively emphasizes all the parts composing clothes by making them individually independent at the same time as each element is inclusively shown with the harmony of the overall silhouette of clothes and many other details. This study examined classical formative characteristics through a theoretical research on a formative paradigm revealing the classical style. Also, the significance of classical or rational value of art was illuminated by observing what characteristics a classical formation paradigm shows in modern fashion. As a result, classical characteristics in modern fashion prove that classicism is not a merely past construction style separated from the present but a construction paradigm deeply involved in our reason system.

• Structural Engineering and Mechanics
• /
• 제55권3호
• /
• pp.495-510
• /
• 2015

Free vibration of non-uniform embedded nanoplates based on classical (Kirchhoff's) plate theory in conjunction with nonlocal elasticity theory has been studied. The nanoplate is assumed to be rested on two-parameter Winkler-Pasternak elastic foundation. Non-uniform material properties of nanoplates have been considered by taking linear as well as quadratic variations of Young's modulus and density along the space coordinates. Detailed analysis has been reported for all possible casesof such variations. Trial functions denoting transverse deflection of the plate are expressed in simple algebraic polynomial forms. Application of the present method converts the problem into generalised eigen value problem. The study aims to investigate the effects of non-uniform parameter, elastic foundation, nonlocal parameter, boundary condition, aspect ratio and length of nanoplates on the frequency parameters. Three-dimensional mode shapes for some of the boundary conditions have also been illustrated. One may note that present method is easier to handle any sets of boundary conditions at the edges.

• 한국문헌정보학회지
• /
• 제42권2호
• /
• pp.393-420
• /
• 2008

이 글은 경주 왕룡사원의 삼존불상에서 수습된 복장유물의 전체적인 현황을 조사하고 평가한 것이다. 특히 복장유물의 조사과정에서 전적류에 대한 가치를 집중적으로 고찰하였다. 그 결과 불복에서 발견된 $\ll$도해금강경$\gg$, $\ll$묘법연화경삼매참법$\gg$, $\ll$장수경$\gg$, $\ll$선종영가집$\gg$ 등은 국가문화재 보물급에 해당되는 중요한 판본으로 평가하였다.

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 2001년도 가을 학술발표회 논문집
• /
• pp.423-426
• /
• 2001

In this paper a large scale direct tension test of plain concrete is represented. Two independently controlled actuators were used to ensure a homogeneous tensile field and to avoid secondary flexural stresses. Fracture energies evaluated by a classical prediction equation and this test are compared. The result indicated that the classical prediction equation is not adequate to predict the fracture energy of large sized specimens. From this test, it was determined that the fracture energy obtained from large scale direct tension tests is significantly higher than the one obtained in wedge splitting tests on laboratory sized specimens. But the tensile strength was about half the value determined from splitting tensile strength test with cylindrical specimens.

• 한국멀티미디어학회논문지
• /
• 제17권12호
• /
• pp.1528-1536
• /
• 2014

Although the process about korea image restoration contents program development and liberalization have cultural and artistic worth, it is not possible to restore technically or cost enormous expense. In the study, it suggest the needs of korea image restoration contents program development through image restoration case. It is revitalize that the study in digital image restoration technical prepare the ground for passing high-qualities cultural legacy by restoring classical film. We think the development of korea image restoration software will strengthen the basis to the new creation industry of high value-added in the global cultural prosperity industry.