• Title/Summary/Keyword: square

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디지털 미디어 검색 시스템 및 응용

  • 유성준
    • Proceedings of the Korea Database Society Conference
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    • 1998.09a
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    • pp.115-138
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    • 1998
  • $\square$ 입력 및 색인 방법의 용이성 및 효율성 $\square$ 대상 미디어 타입 $\square$ 웹 데이터의 색인 및 검색 기능 $\square$ DBMS와의 결합성 $\square$ Total Solution에의 근접성 $\square$ 검색 방법의 종류 $\square$ 현재 시장 점유율 $\square$ 가격(중략)

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IDEALS AND DIRECT PRODUCT OF ZERO SQUARE RINGS

  • Bhavanari, Satyanarayana;Lungisile, Goldoza;Dasari, Nagaraju
    • East Asian mathematical journal
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    • v.24 no.4
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    • pp.377-387
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    • 2008
  • We consider associative ring R (not necessarily commutative). In this paper the concepts: zero square ring of type-1/type-2, zero square ideal of type-1/type-2, zero square dimension of a ring R were introduced and obtained several important results. Finally, some relations between the zero square dimension of the direct sum of finite number of rings; and the sum of the zero square dimension of individual rings; were obtained. Necessary examples were provided.

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Analysis of Biophilic Design Elements in Exterior City Squares for a Application of Indoor Squares Design - Focused on Relaxation - (실내광장 적용을 위한 도시 광장의 바이오필릭 디자인(Biophilic Design) 요소분석 - 쉼(Relaxation)을 중심으로 -)

  • Park, Minjii;Lee, Hyunsoo
    • Korean Institute of Interior Design Journal
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    • v.25 no.4
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    • pp.3-12
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    • 2016
  • The purpose of this study was to analyze City squares in Europe according to Biophilic Design elements to apply domestic Indoor Squares in Mixed-use building for relaxation. This study seeks to present a direction for designing an indoor square that uses the aspects of European city square. The following details consist the purpose of the study. First, Perspective from the Biophilic design and analyzing criteria of Europe city square. Second, European city square is analyzed to establish the criteria to be applied to indoor square. Third, based on European city square analysis, the planning direction for domestic indoor square is suggested. This result of paper proceeds as follows. First, it describes the analysis of the Indoor Squares of the domestic Mixed-use building. The results were derived of the fact that not applying the water elements and Facade greening. Second, In Europe Square, It is accounted for the highest proportion (33%) of the spaciousness. Third, Through a comparative analysis domestic indoor square was derived that the higher the need to improve the spaciousness and botanical motif. It is the ultimate goal of this study based on the analysis of the city square to set the criteria for the biophilic design of the indoor square to present the orientation of the indoor square.

Added Mass Estimation of Square Sections Coupled with a Liquid Using Finite Element Method

  • Jeong, Kyeong Hoon;Jhung, Myung Jo
    • Nuclear Engineering and Technology
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    • v.49 no.1
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    • pp.234-244
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    • 2017
  • Natural frequencies of immersed square sections decrease due to a contribution of added mass to the movement of square sections. In this study, natural frequencies of square sections are obtained as a function of gap size between the square section and a rigid square wall using the finite element method. Additionally, they are used to extract the added mass effect on translational and rotation motions. Published information and studies on the translational and torsional vibration of square beams are also examined for practical use. D coupling of a square section is also investigated for multiple square sections. The suggested added mass estimation can be applicable to the spent fuel storage design of a pressurized light water modulated nuclear power plant.

High Speed Memory Module

  • Yu, Hyo-Suk
    • Proceedings of the International Microelectronics And Packaging Society Conference
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    • 2006.10a
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    • pp.293-316
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    • 2006
  • [ $\blacksquare$ ] I/O Signal $\square$ We see adequate margin for the RC B design $\square$ Minimum ODW value is 328ps using Ac to DC measurement for the read case. $\square$ Minimum ODW value is 350ps using AC to DC mesurement method for the write case. $\blacksquare$ CLK Signal $\square$ The slew-rate decreases when the Cterm value increases $\square$ Lower slew-rate could effect delay and jitter. $\square$ There are some ldge issues during transitions with lower Cterm and without Cterm. $\square$ Our recommendation for the Cterm value range is between 1.5pF to 2.4pF. $\blacksquare$ ADD/CMD/Ctrl Signal $\square$ High output slew-rate at low VDD causes ring back that reduces voltage margin because of x-talk. $\square$ 30ohm Rterm for the CTRL signal shows a better signal integrity result compared to 36ohm.

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위기극복을 위한 기업의 현실적 전자상거래 활용전략

  • 김성희
    • Proceedings of the CALSEC Conference
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    • 1998.10a
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    • pp.17-25
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    • 1998
  • $\square$ 경쟁 원리에 따른 민간주도 추진 및 최소한의 정부 규제 (환경조성/수요창출 등) $\square$ 전자거래의 안전성, 신뢰성 확보 및 이용자의 권익 보호 (과세원칙/전자지급제도/전자서명, 인증, 암호화/지적소유권보호/소비자보호, 개인정보보호, 분쟁조정) $\square$ 글로벌화의 환경변화에 능동적으로 대응하는 유연한 법제도의 수립 및 시행 (과세 원칙 /전자지급제도) $\square$ 전자거래 기반에 대한 자유로운 현실적 접근. 활용 및 신뢰성ㆍ저렴화 선결 (전자거래기술개발 및 표준화) $\square$ 전자거래 관련 국제협력의 촉진 $\square$ 준비된 소비자 대응 및 네트워크 수요자를 대비한 1:1 마케팅 환경 조성 (집단적 의사대변) $\square$ 기술적 규제를 대비한 개도국 입장의 지속적인 요소기술 연구활동 촉진 및 EC 인프라 구축 $\square$ EC관련 규제체제와 기존 상거래와의 충돌 가능성 제거 및 흡수 (현실/규제의 융합) $\square$ EC 인프라 공동운영 및 거래의 수평적 협동 지원(중략)

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An Analysis of Flow Characteristics with Changing the Inside Shapes in Square Manhole (직사각형 맨홀의 내부형상변화에 따른 흐름특성 분석)

  • Jang, Suk-Jin;Yoon, Young-Noh;Kim, Jung-Soo;Yoon, Sei-Eui
    • 한국방재학회:학술대회논문집
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    • 2007.02a
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    • pp.199-202
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    • 2007
  • In storm sewer networks a lot of manholes are installed to maintain and connect a sewer of urban area. There are some shapes of manhole such as circular type, square type, and so on. Square shape manholes are installed to connect the large diameter drainage pipes in general and have lager head losses than circular one. Consequently, it is important to analyze the head losses in square manhole because the head losses in square manhole are much bigger than the friction losses in pipes. Hydraulic experimental apparatus which can be changed the inside shape in square manhole was installed for this study. The experimental discharge was $16{\ell}/sec$. The head loss coefficients in the manhole were calculated by the experimental results. The range of head loss coefficients in the general square manhole were from 0.33 to 0.48 and the range of head loss coefficients in the square manhole changed inside shape were from 0.23 to 0.28.

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Free Vibration Analysis of 4 Edges Clamped, Isotropic Square Plates with 2 Collinear Circular Holes (2개의 원형구멍이 있는 4변고정, 등방성 정사각형 판의 자유진동해석)

  • 이영신;이윤복
    • Journal of KSNVE
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    • v.4 no.3
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    • pp.283-295
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    • 1994
  • This work presents the experimental and finite element analysis results for the free vibration of 4 edges clamped, isotropic square plates with 2 collinear circular holes. Natural frequencies of finite element analysis are obtained for the complete square plate, the square plates with a central circular hole and the square plates with 2 collinear circulare holes. And natural frequencies are experimentally measured for the complete square plate, the square plate with a central circular hole(d = 150 mm) and the square plates with 2 collinear circular holes. Agreement between experimental and FEM results is excellent. Mode shapes in special case are presented. The conclusions of the study are as follows. There is little variation of nondimensional frequency parameters for the first six mode when the aspect ratio of circular hole is less than 1/6 in the isotropic square plates with 2 collinear circular holes. And the first nondimensional frequency parameter doesn't vary as the aspect ratio of circular hole increase.

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Thermal stability improvement of nickel germane-silicide with Ni/Co/Ni on silicon-germanium (Ni/Co/Ni를 적용한 Ni germane-silicide의 열 안정성 개선)

  • 황빈봉;지희환;오순영;배미숙;윤장근;김용구;박영호;왕진석;이희덕
    • Proceedings of the IEEK Conference
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    • 2003.07b
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    • pp.1069-1072
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    • 2003
  • Germane-sillicide phase formation on S $i_{0.25}$G $e_{0.75}$ with Ni 100$\square$, Co 10$\square$/Ni 100$\square$ and Ni 50$\square$/Co 10$\square$/Ni 50$\square$ layer was studied by sheet resistance and Field Emission Scanning Electron Microscopy(FESEM). Thermal stability of nickel germane-silicide is found to be improved by sputtering Ni/Co/Ni on the SiGe. After annealing at 600, 650, $700^{\circ}C$, 30min., the nickel germane-silicide formed by Ni 50$\square$/Co 10$\square$/Ni 50$\square$ layer achieved a sheet resistance less than 17ohms/sq.(almost the same to the value before furnace annealing for 30min.) , while the process of the other two ways result in high sheet resistance and even sheet resistance fail due to Ge segregation.ion.

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Measurement of Axis Squireness by using Reversal Method (반전법을 이용한 축 직각도 측정방법)

  • Lee C.W.;Song J.Y.;Ha T.H.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.436-439
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    • 2005
  • In general a square master and a dial gauge are used to measure the axis squareness on the spot. This method is a comparison measurement and its accuracy depends on the square accuracy wholly. Therefore the accuracy of a square master is very important and it is impossible that the accuracy of a square measurement is superior to the accuracy of a square master. In this paper, the new method of square measurement is proposed for measuring square without a square master and easily. This method is an absolute measurement by using a reversal method and can be used to measurement the accuracy of a square master.

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