• 제목/요약/키워드: Core composition

검색결과 493건 처리시간 0.029초

석탑 기단부 적심구성방법에 대한 특성 고찰 - $7{\sim}8$세기 석탑 중 해체 수리한 석탑을 중심으로 - (A study on characteristics of composition method of inner foundation in stone stupa)

  • 정해두;장석하
    • 건축역사연구
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    • 제16권5호
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    • pp.55-66
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    • 2007
  • Through analysing on construction cases of stupa built in A.D. 7,8th, I have researched about these : constructive methods of inner soil of stupa, spatial compositions, characteristics of structures, arrangements of inner soil and etc. And cases analysed are six ; Mireuksajiseoktap(stone pagoda of Mireuksa Temple site), Gameunsajisamcheumgseoktap(three storied stone pagoda of Gameunsa Temple site), Goseonsajisamcheungseoktap(three storied stone pagoda of Goseonsa Temple site), Wolseong nawolliocheungseoktap(five storied stone pagoda in Nawonri, Wolseong), Guksagokseoktap(three storied stone pagoda in Guksa valley), Giamgokseoktap(three storied stone pagoda in Giam valley). Additionally we researched about inner soil of Sacheonwangsaji tapji(basement of stone stupa site in Sacheonwang Temple site) to speculate on composition of Synthetically, the foundation could be divided as core space and outer space. ; the former as structural function and the latter as ornamental function. And the core area could be divided again as center column space and buffer space. The relationship between core spaces and its formation are as belows; First, according to the area of foundation and scale of stone pagoda, formations of core are differed. As the scale of stone pagoda goes bigger, and the area of foundation goes larger, the structure of stone pagoda comprised by center column type and layered-core which endure upper load independently. On the contrary, as the scale of stone pagoda goes smaller, and the area of foundation goes lesser, the structure of stone pagoda tend to use only center column to endure upper part. Second, spatial composition of core area is comprised as two spaces, one which endure upper load and buffer space which absorb side pressure and upper pressure. The buffer space tend to be used in case of those structures which could not endure side pressure or have lots of joint. In some cases, it was located below the cover stone of foundation and gained upper load. And in case that have not gained pressure from side stone, the buffer space are comprised by smalle stone or roof tile to get structural supplement.

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입자 내 조성 변화가 수분산성 아크릴 에멀젼 점착제의 점착 물성과 수분산성에 미치는 영향 (Effects of Intra-particle Composition on the Adhesive Properties and Water Dispersity of Water Dispersible Acrylic Emulsion Pressure Sensitive Adhesive)

  • 서인선;이명천
    • 공업화학
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    • 제18권5호
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    • pp.444-448
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    • 2007
  • 수분산성 점착제의 점착 물성과 수분산성에 미치는 입자 내 조성의 영향을 알아보기 위하여 다양한 입자 내 조성을 갖는 아크릴계 에멀젼형 점착제를 제조하여 각각의 점착 물성과 수분산성을 조사하였다. 입자 내 단일 조성을 갖는 경우 유지력과 수분산성을 동시에 만족시키기 어려웠으나 입자 내 조성을 hard core/soft shell 형태를 갖게 함으로써 수분산성은 적게 희생하고 유지력을 높일 수 있었다. 또한 메타크릴산/아크릴산(MAA/AA)의 중량비가 4/1인 경우에는 친수성 물질인(AA+MAA) 함량이 core로 갈수록 많은 경우와 shell로 갈수록 많은 경우 모두 유지력은 크게 상승했으나 초기점착력은 크게 낮아졌으며 수분산성은 거의 관찰되지 않았다. 그러나 MAA/AA 중량비가 1/4인 경우는 shell 부분에 (AA+MAA) 함량이 많은 경우에 수분산성이 더 컸으나 유지력은 상대적으로 적게 나타났다.

$30BaTiO_3$.$70NaNbO_3$ 고용체 단결정 육성 (Growth of $30BaTiO_3$.$70NaNbO_3$ Solid Solution Single Crystal)

  • 김호건;류일환
    • 한국결정성장학회지
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    • 제2권1호
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    • pp.20-29
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    • 1992
  • 전영역에 결쳐서 고용영역이 존재하는 $BaTiO_3-NaNbO_3$계에서, congruent melting composition인 $30BaTiO_3{cdot}70NaNbO_3$조성의 고용체 단결정을 Czochralski법에 의하여 육성하였다. 직경 15-50mm, 길이 20-30mm인 단결정이 결정인상속도 2.0mm/h, 결정회전수 5.0-1-rpm에서 육성되었다. 그러나 결정 육성중 육성되는 결정의 열전도도가 낮기 때문에, 발생하는 잠열(latent heat)의 방출이 충분치 않아 고-액계면이 평탄하게 유지되지 않았고 그결과로 육성된 결정중에는 corestructures가 관찰되었다. 육성된 결정에서 core 부분을 제외한 다른 부분은 inclusion등이 없는, 광학적으로 균질한 단결정이었고 가시광 영역에서 양호한 광투과율을 보였다.

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관점지향 프로그램 기반의 동적 소프트웨어 컴포넌트 조합 패턴 (Dynamic Software Component Composition Based On Aspect-Oriented Programming)

  • 배성문;박철순;박춘호
    • 산업경영시스템학회지
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    • 제31권4호
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    • pp.100-105
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    • 2008
  • Cost reduction, time to market, and quality improvement of software product are critical issues to the software companies which try to survive in recent competitive market environments. Software Product Line Engineering (SPLE) is one of the approaches to address these issues. The goal of software product line is to maximize the software reuse and achieve the best productivity with the minimum cost. In software product line, software components are classified into the common and variable modules for composition work. In this paper, we proposed a dynamic composition process based on aspect-oriented programming methodology in which software requirements are classified into the core-concerns and cross-cutting concerns, and then assembled into the final software product. It enables developers to concentrate on the core logics of given problem, not the side-issues of software product such as transactions and logging. We also proposed useful composition patterns based on aspect oriented programming paradigm. Finally, we implemented a prototype of the proposed process using Java and Aspect to show the proposed approach's feasibility. The scenario of the prototype is based on the embedded analysis software of telecommunication devices.

진단검사의학과의 검사기능과 공간구성에 관한 연구 - 1000병상급 종합병원을 중심으로 (A Study on the Laboratory Function and Spatial Organization for Laboratory Medicine - Focused on the Tertiary Level General Hospitals having more than 1000 Beds)

  • 최창대;김영애
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제23권4호
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    • pp.37-53
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    • 2017
  • Purpose: As the structure of the disease has been changed and the infectious disease has been increased, the demand for diagnostic examination has been increasing. So, the department of laboratory medicine in hospital has playing the important role accounting for about nineteen percent of total medical expenses in korea. This study is to investigate the laboratory function and spatial composition of the department and figure out the space area and space organization. Methods: Explore the literature review to identify the laboratory function. Limit to five cases of tertiary level general hospital having about a thousand bed and analyze the space layout and floor area to confirm the spatial composition. Classify the exam function and check the spatial composition and spatial organization. Results: This study allows 5 conclusions to be summarized. Laboratory medicine divided into nine part in regulation, but in space allocated into core lab, emergency lab and six part lab. Total laboratory area is $2,036m^2$ in average, and is composited with 60% for lab, 17% for office and 20% for public. Lab area per a bed presents $1.88m^2$. Microbiolgy and molecular lab area are getting large. Laboratory space organized into the four zone, like an entrance zone, core zone, rear zone and peripheral zone. Emergency and transfusion lab are allocated in entrance zone, hematology chemistry and immunology in core lab, microbiology and molecular lab in rear, support offices in peripheral zone. The most important point was to check the spatial composition of the Laboratory Medicine according to the inspection function. Implications: This study can be used as a useful data in planning and designing a Laboratory Medicine Department.

다성분계 Glass Fiber의 $La_2O_3$ 첨가에 따른 광학적 특성에 관한 연구 (The Study on Optical Properties by Adding $La_2O_3$ in Multicomponent Glass Fiber)

  • 김용호;강원호
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1994년도 추계학술대회 논문집
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    • pp.21-23
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    • 1994
  • By adding La₂O₃ to optical multicomponent glass composition, after making mother glass and core fiber that enable to enlarge the infrared transmittance region, then surveyed the optical properties. Through thermal analysis of the glass abstained by melt-quenching after selecting stable basic composition on devitrification and replace SiO₂ by 4-12wt% La₂O₃. As La₂O₃ increases up to l2wt% transition temperature, refractive index, density, deformation temperature increased, whereas thermal expansion coefficient decreased. As a result of inspectig transmittance in UV/VIS/IR region, visable region indicated the decrease of transmittance by increasing the La₂O₃ and transmittance region was enlarged by increasing the La₂O₃ in IR region. Also, fabricate core fiber at 820℃ and severy the optical loss we could fact that La₂O₃ composition added 12wt% showed the minimum optical loss.

Comparative Analysis of Completely Sequenced Insect Mitochondrial Genomes

  • Lee, Jin-Sung;Kim, Ki-Hwan;Suh, Dong-Sang;Park, Jae-Heung;Suh, Ji-Yoeun;Chung, Kyu-Hoi;Hwang, Jae-Sam
    • International Journal of Industrial Entomology and Biomaterials
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    • 제2권1호
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    • pp.1-6
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    • 2001
  • This paper reports a few characteristics of seven insect mitochondrial genomes sequenced completely (Bombyx mori, Drosophila melanogaster, D. yakuba, Apis mellifera, Anopheles gambiae, A. quadrimaculatus, and Locusta migratoria). Comparative analysis of complete mt genome sequences from several species revealed a number of interesting features (base composition, gene content, A+T-rich region, and gene arrangement, etc) of insect mitochondrial genome. The properties revealed by our work shed new light on the organization and evolution of the insect mitochondrial genome and more importantly open up the way to clearly aimed experimental studies for understanding critical roles of the regulatory mechanisms (transcription and translation) in mitochondrial gene expression.

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공간구문론 분석에 의한 아파트 주동형식별 공간배치 특성에 관한 연구 (A Study on the Spatial Configuration Characteristics of the Apartment Building Type based on the Space Syntax Analysis)

  • 박몽섭;박찬돈;하재명
    • 한국주거학회논문집
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    • 제15권1호
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    • pp.185-194
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    • 2004
  • This paper deals with the spatial configuration of the unit floor plan based on the apartment building type. It is generally agreed that various apartment building types were organized by diverse apartment unit floor plan. The reason behind this diversity, apartment unit plan are affected by the environmental condition and the diverse spatial composition of the unit floor plan. Apartment building types were classified by the similarity of the justified-graph type. This types classified into two category; One core type which were classified by the shape of the core, and multiple core type which were compounded by more than two core. These categories divided into 5 types, and 2 types. Each types were compared in view of the mean depth, relative asymmetry, integration value. Consequently, these types could be classified in the number of the unit floor plan. It is profitable to 3 unit types which was analyzed in view of an indicator of the spatial configuration. Therefore, 3 unit types is favorable to the composition of the apartment building types.

Influence of the Composition of Shell Layers on the Photoluminescence of Cu0.2InS2 Semiconductor Nanocrystals with a Core-shell Structure

  • Kim, Young-Kuk;Ahn, Si-Hyun;Cho, Young-Sang;Chung, Kookchae;Choi, Chul-Jin;Shin, Pyung-Woo
    • 대한금속재료학회지
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    • 제49권11호
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    • pp.900-904
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    • 2011
  • We have synthesized core-shell structured nanocrystals based on chalcopyrite-type $Cu_{0.2}InS_2$. The photoluminescence of the nanocrystals shows a significant blueshift in the emission wavelength by shell capping with ZnS layers. This shift can be explained with the compressive stress to core nanocrystals applied by the formation of a ZnS shell layer with a large lattice mismatch with the core. In this study, the emission wavelength could be tuned by changing the composition of the shell layers. Nanocrystals with emission wavelength ranging from 575 nm through 630 nm were synthesized by varying the portion of cadmium compared with zinc in the shell layers.