• 제목/요약/키워드: work space

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3차원 형상·지식정보를 활용한 마감공사 개산견적 프로세스 (Schematic Estimation Process for Finishing Work using 3D Geometry-Knowledge Information)

  • 박상헌;박형진;구교진
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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    • pp.210-212
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    • 2013
  • The construction cost estimates during the design phase becomes the standard to judge profitability and validity, and is very important in various decision-makings by project owner. However, since approximate costs are quoted when many parts are undecided in the early stage of project, differences are bound to occur between the construction cost calculated through approximate quotation and that put into construction actually. Also, since in existing quotation works, quantity calculations have been dependent on the staff's manual work, involving error potential, and thus differences are likely in quantity calculation depending on the quotation staff's method of calculation. In this study, the process of creating space model to deduce 3D geometry information for approximate quotation in association with knowledge information and the expression for calculation of finishing area were proposed.

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PoW-BC: A PoW Consensus Protocol Based on Block Compression

  • Yu, Bin;Li, Xiaofeng;Zhao, He
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제15권4호
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    • pp.1389-1408
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    • 2021
  • Proof-of-Work (PoW) is the first and still most common consensus protocol in blockchain. But it is costly and energy intensive, aiming at addressing these problems, we propose a consensus algorithm named Proof-of-Work-and-Block-Compression (PoW-BC). PoW-BC is an improvement of PoW to compress blocks and adjust consensus parameters. The algorithm is designed to encourage the reduction of block size, which improves transmission efficiency and reduces disk space for storing blocks. The transaction optimization model and block compression model are proposed to compress block data with a smaller compression ratio and less compression/ decompression duration. Block compression ratio is used to adjust mining difficulty and transaction count of PoW-BC consensus protocol according to the consensus parameters adjustment model. Through experiment and analysis, it shows that PoW-BC improves transaction throughput, and reduces block interval and energy consumption.

아파트 단위세대 계획을 위한 유니버설디자인 지침에 관한 연구 - 부산지역 모델하우스를 대상으로 - (A Study on Universal Design Guidelines for the Korean Apartment Housing Units - Focused on Modelhouses in Busan -)

  • 신은경;박수빈;김혜정
    • 한국주거학회논문집
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    • 제26권4호
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    • pp.45-53
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    • 2015
  • The concept of universal design has become an essential requirement for environmental design, due to the growing population of the aged, and the increasing needs of people with disabilities. This study aims to propose a universal design guideline for apartment housing units that can be adapted to both a general household and a household with elderly or disabled individuals. This design process encompasses literary reviews, and includes the measurements of the dimensions and facilities of currently available apartment housing. The three domestic universal guidelines were reviewed, and a universal design checklist for apartment housing units was developed. Afterward, the individual elements and inclusive factors of universal design, for apartment housing units, were collected and examined according to the each functional space within the home. The results and conclusions are as follows: 1) The factors of universal design are diversified by the division of the functional spaces within the home, such as the private space, the work space and the entertaining space. 2) Due to the lack of space and storage, wheelchairs cannot be used in most currently available apartment types; this problem can be resolved by applying flexibility and optional adaptation. The solutions for the above are additional design factors that will enable more convenient usage and elaborate design.

현대건축에 나타난 바이오미미크리의 생태적 공간 특성 연구 (Study on Features of Ecological Space of Biomimicry)

  • 최지혜;김개천
    • 한국실내디자인학회논문집
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    • 제20권6호
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    • pp.116-123
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    • 2011
  • How to see nature and how to define the relation between nature and the human certainly influence fundamental attitude toward nature and any results derived from the attitude. Therefore, in order to figure out a way for how the humans and nature should coexist, the thesis has began a philosophical analysis on the origin of the biomimetics. Based on findings from the analysis, the thesis would work on the features of biomimicry space, presenting related possibilities. For the philosophical characteristic of the thesis which was an ecological world view, introduced at the end of mechanical world view era, the ideas of Spinoza, Nietzsche, Bergson and Deleuze about nature were quoted. Based on what the philosophers have said, the thesis looks into successful ideas, designs and ways of living that nature has shown by itself. After all, the purpose of the thesis is to investigate the constantly changing space of the biomimetics by organic forms, autonomous systems and dividing programs. Based on this, nine cases were analyzed to derive the characteristics. As a result, organic forms, autonomous systems and dividing programs characteristics of ecological appear simultaneously in harmony. Biomimicry space can coexist with nature and the human is an effective way.

Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea

  • Choi, Byung-Kyu;Cho, Chang-Hyun;Cho, Jung Ho
    • Journal of Astronomy and Space Sciences
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    • 제32권4호
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    • pp.403-409
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    • 2015
  • The Quasi-Zenith Satellite System (QZSS), a dedicated regional Japanese satellite system currently under development, was designed to complement the performance of the Global Positioning System (GPS). The high elevation angle of the QZSS satellite is expected to enhance the effectiveness of GPS in urban environments. Thus, the work described in this paper, aimed to investigate the effect of QZSS on GPS performance, by processing the GPS and QZSS measurements recorded at the Bohyunsan reference station in South Korea. We used these data, to evaluate the satellite visibility, carrier-to-noise density (C/No), performance of single point positioning, and Dilution of Precision (DOP). The QZSS satellite is currently available over South Korea for 19 hours at an elevation angle of more than 10 degrees. The results showed that the impact of the QZSS on users' vertical positioning is greatest when the satellite is above 80 degrees of elevation. As for Precise Point Positioning (PPP) performance, the combined GPS/QZSS kinematic PPP was found to improve the positioning accuracy compared to the GPS only kinematic PPP.

컴퓨터 도입에 의한 디자인 변화 연구 - 평면에서 가상공간으로 변화 - (A Study on the change of design by computer introduction - Change from plane space to Cyber Space -)

  • 오양순
    • 디자인학연구
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    • 제11권2호
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    • pp.83-92
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    • 1998
  • 뉴 미디어의 발달로 현재 모든 분야가 바뀌어가고 있다. 산업혁명을 제1산업혁명이라면 현대의 20세기는 제2의 산업혁명기라고 일컫는다. 즉, 오토메이션 시스템(Automation System), 컴퓨터, 인공두뇌(Cybemetics)등에 의해 인간의 두뇌노동으로부터 해방시킨 혁명이라고 한다. 정보화시대와 기술혁명으로 디자인분야에서도 많은 변화를 가져왔다. 전자화를 통한 제작시간과 효과를 극대화, 비용절감과 디자인의 차별화로 경쟁력을 꾀하고자 최첨단의 기능을 갖춘“컴퓨터”에 거의 의존하고 있다. 따라서 디자인의 표현매체로 변하고 있는 것이다. 즉, 평면에서 이루어지던 디자인작업 및 표현매체가 이제는 3차원의 가상공간에서 표현되어지고 있다. 즉, 디자인분야에서 컴퓨터를 활용하는 것은 자연스럽게 되었고, 가상의 공간인 컴퓨터 화면에서 작업이 이루어지고 있기 때문이다. 이런 흐름이 디자인 분야에 파급되므로 인하여 발생되어지는 영향과 그에 따른 문제점, 이점 등을 제시해보고자 한다.

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소형위성용 GPS/INS 통합 항법 컴퓨터 개발 (Development of Navigation Computer for Small Satellites Using Integrated GPS/INS)

  • 최영훈;이병훈;장영근
    • 한국항공우주학회지
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    • 제36권4호
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    • pp.393-398
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    • 2008
  • 본 논문에서는 소형 인공위성에 탑재 가능한 GPS/INS 항법 컴퓨터의 구조를 제안한다. GPS/INS 항법 시스템을 소형 인공위성에 적용하기 위해서는 우선 우주의 방사능, 미세 중력, 진공 상태 등의 극한 환경을 고려해야 한다. 또한 소형 인공위성에서 GPS/INS 항법 시스템의 궁극적인 목표는 소형 인공위성의 편대 비행이므로 실시간 처리 능력이 필요하다. 제작된 항법 보드에는 우주환경에 대한 헤리티지가 있는 PowerPC계열의 MPC860T와 KAUSAT-2의 환경시험에서 우주환경에 대한 검증을 마친 ATmega128을 사용하였다. 항법 알고리즘은 MPC860T에 포팅된 VxWorks 환경에서 동작하도록 구현하였다.

르코르뷔지에의 회화와 공간디자인의 상호관련에 관한 연구 (A Study on the correlation between Le Corbusier's Painting and the Space Design)

  • 전영미
    • 한국실내디자인학회논문집
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    • 제17권6호
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    • pp.82-91
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    • 2008
  • After modernism, artistic movements such as Cubism, Futurism, De stijl and Bauhaus demonstrated a connection to architecture and other plastic arts and developed a tendency towards a synthetic art. Above all, the unification of painting and architecture is the most noticeable point; a blueprint and a multi-coloring space that are applied on 3-dimensions painting brought new dimensions into relief. Following this artistic trend, it is easy to point out that Le Corbusier's works; which were created under the name of Charles Edouard Jeanneret, show the pictorial peculiarity in the Space Design. Even if white space that he has designed under the slogan such as standardization and mechanization, the variety and metamorphism that he has tried to express on his work have widely been recognized. Especially, his late architectural works were produced as the figurative arts expressing the ambiguity of painting and hence led a step towards a synthetic art. The study analyses Le Corbusier's 2-dimensional Painting as well as his 3-dimensional Space Design. Furthermore, it aims at embarking on the unification of painting and architecture in terms of Le Corbusier's synthetic design philosophy.

터널 막장보강효과에 대한 연구 (A study of tunnel face reinforcement)

  • Peila, Daniele;Oreste, Pier Paolo;Pelizza, Sebastiano;Kim, Sang-Hwan
    • 한국터널지하공간학회 논문집
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    • 제6권3호
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    • pp.259-267
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    • 2004
  • The practice of introducing and grouting reinforced fiber glass pipes or bar into the core to be excavated to maintain stable the tunnel face during excavation has been applied to many tunnels, where difficult geotechnical conditions are present, with good results in terms of safety and speed of works. This reinforcing technique, initially developed to be used jointly with the mechanical precut in clay, has been widely used with other geotechnical conditions as the only type of reinforcement or joined with other ground consolidation and/or reinforcement techniques (i.e. steel pipes or jet-grouting umbrella). At present same numerical researches have been carried out to find which are the real working conditions of the reinforcing elements but no final results have been obtained for the definition of the best design approaches. In this work the results of a three dimensional parametric numerical model is presented.

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Radial Velocity and Photometric Study of the Long Period Interaction Binary AQ Cas

  • Lee, Yong-Sam-;Chun, Yong-Woo;Jeong, Jang-Hae
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 1992년도 한국우주과학회보 제1권1호
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    • pp.15-15
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    • 1992
  • AQ Cassiopeiae (BD+61`0242, uv=10, Sp=B3+Bg) is a totally eclipsing binary system with the obital period of about 12 days. 71 was observed for 15 nights in 1985 with the1.8-m telescope at the DAO, employing a Reticon and a three-stage image tube attached to the spectrograph. And also, photometric observations of AQ Cas had been made inUBv for six years from 1982 to 1988 at Yonsei University Observatory(YUO). This work includes UBV observations obtained at YUO as a part of The Ten-Year Observing Program(1982-1992). Double lined radial, velocity curves and Ufv light curves of AQC as are constructed. The light curves and radial velocity curves show a strong evidence of circumstellar matter or mass stream. It is clear at the phases of just outside externaleclipse contacts, particularly at phase 0.8-0.9, shown in Figures 1 and 2. A solution by combining the radial velocity and photometric curves of the binary was obtained with the Wilson-Devinney Code. We found that the system is semi-detached with the coolcomponent filling its Roche lobe. The absolute dimensions of AQ Cas are calculated. The result shows that this system consists of two massive and subgiant stars.

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