• Title/Summary/Keyword: DataBases

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A study on the Estimation of Standard Heating City Gas Consumption of Apartment Housing (공동주택의 난방용 도시가스 표준사용량 산정에 관한 연구)

  • Shim, Yun-Hee;Choi, Chang-Ho;Lee, Hyun-Woo
    • Journal of the Korean Solar Energy Society
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    • v.26 no.3
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    • pp.89-97
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    • 2006
  • Our Housing culture continuously changes for the correspondence to social development and changes of economy, and be developing. A massive apartment complex continuously increased, and According to this in our country heating energy consumption of a residential building is continuously increasing at country me whom was limited in order to raise efficient residential land use and diffusion ratio of house. If confirm an element to be able to reduce use of a heating energy, and there is saving possibility to parts of energy saving, this study will present the standard amount used with bases to the gas amount used for heating and Field Test data about room temperature. Execute simulation with building balance (public area, a plain), the gas amount useds such as incense of a building, indoor setting temperature ($^{\circ}C$), a position of an apartment house etc. to affect the energy amount used of a valuation object building of a variable through Field Test and research on the actual condition. Calculate the standard amount used of city gas for winter season heating of a comparative analysis apartment house to data value getting the above results through Field Test and simulations with bases.

A Study on the Public Library Space Guidelinesan of Measurement and Management system (공공도서관 관리공간의 표준모델에 관한 연구)

  • Kim, Keum-Hyun;Lee, Cho-Lin;Kong, Soon-Ku
    • Korean Institute of Interior Design Journal
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    • v.17 no.6
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    • pp.170-177
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    • 2008
  • This study starts off by stating that the lack of awareness in the importance of reasonable and systematized layout in management facility is essentially working against building a quality public library. And that there is a merit in studying the spatial elements, its density, amount of needed space, and the likes to efficiently deal with present workings of the library which are becoming more dynamic and complicated. This paper seeks to embark on this study and also to provide a foundational data for research on management facility of the public library. The paper bases its research on 10 public libraries which are located in Seoul City and in Gyeonggi province, and are built after the year 2000. The paper focuses on the spatial distribution by section and allotment of management facility space in the library. Consequently, to find solutions or to suggest improvements on problems encountered, the paper introduces Japan's cases (4 recently-built public libraries) as a foreign case study. With foregoing domestic and foreign library case analyses, and the survey results of managerial staffs' demands, the paper seeks to provide basic data about management facility space and its floorplan of the public library. The paper bases its research on pubic libraries' management facilities, and expects to contribute to the efficient building of the public library in the future.

WSGGM-Based Spectral Modeling for Radiation Properties of Combustion Products (회체가스중합모델에 기초한 연소가스의 파장별 복사 성질)

  • Kim, Ook Joong;Song, Tae-Ho
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.23 no.5
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    • pp.628-636
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    • 1999
  • This work describes the low-resolution spectral modeling of the water vapor, carbon dioxide and their mixtures by applying the weighted-sum-of-gray-gas-gases model (WSGGM) to each narrow band. Proper modeling scheme of gray gas absorption coefficients vs temperature relation is suggested. Comparison between the modeled emissivity calculated from this relation and the 'true' emissivity obtained from the high temperature statistical narrow band parameters is made for a few typical narrow bands. Low resolution spectral intensities from one-dimensional layers are also obtained and examined for uniform, parabolic and boundary layer type temperature profiles using the obtained WSGGM's with several gray gases. The results are compared with the narrow band spectral intensities obtained by a narrow band model-based code with Curtis-Godson approximation. Good agreement is found between them. Data bases including optimized modeling parameters and total and low-resolution spectral weighting factors are developed for water vapor, carbon dioxide and their mixtures. This model and obtained data bases, available from the authors' Internet site, can be appropriately applied to any radiative transfer equation solver.

An Efficient DNA Sequence Compression using Small Sequence Pattern Matching

  • Murugan., A;Punitha., K
    • International Journal of Computer Science & Network Security
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    • v.21 no.8
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    • pp.281-287
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    • 2021
  • Bioinformatics is formed with a blend of biology and informatics technologies and it employs the statistical methods and approaches for attending the concerning issues in the domains of nutrition, medical research and towards reviewing the living environment. The ceaseless growth of DNA sequencing technologies has resulted in the production of voluminous genomic data especially the DNA sequences thus calling out for increased storage and bandwidth. As of now, the bioinformatics confronts the major hurdle of management, interpretation and accurately preserving of this hefty information. Compression tends to be a beacon of hope towards resolving the aforementioned issues. Keeping the storage efficiently, a methodology has been recommended which for attending the same. In addition, there is introduction of a competent algorithm that aids in exact matching of small pattern. The DNA representation sequence is then implemented subsequently for determining 2 bases to 6 bases matching with the remaining input sequence. This process involves transforming of DNA sequence into an ASCII symbols in the first level and compress by using LZ77 compression method in the second level and after that form the grid variables with size 3 to hold the 100 characters. In the third level of compression, the compressed output is in the grid variables. Hence, the proposed algorithm S_Pattern DNA gives an average better compression ratio of 93% when compared to the existing compression algorithms for the datasets from the UCI repository.

A study on deciding reoganization points for data bases with quadratic search cost function (2차 탐색비용함수를 갖는 데이터베이스의 재구성 시기결정에 관한 연구)

  • 강석호;김영걸
    • Journal of the Korean Operations Research and Management Science Society
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    • v.10 no.2
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    • pp.75-82
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    • 1985
  • Reorganization is essential part of data base maintenanc work and the reasonable reorganization points can be determined from the trade-off between reorganization cost and performance degradation. There has been many reorganization models so far, but none of these models have assumed nonlinear search cost function. This paper presents the existensions of two existing linear reorganization models for the case where the search cost function is quadratic. The higher performance of these extended models was shown in quadratic search cost function case.

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A study on the Architectural Planning of Operating-Unit in General Hospital (종합병원의 수술유니트 계획에 관한 연구)

  • Chai, Choul-Gyun
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.7 no.1
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    • pp.77-84
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    • 2001
  • This study provide the planning guidelines for the existing and the new alternative. On the bases of survey and analysis, the basic data for OP-Unit have been proposed in consideration of the development of medical science and hygiene, economic conditions during the last twenty years in Germany. The results of the study were firstly, genera1 basic data, secondly, guidelines of the architectural design for OP-Unit und rooms, thirdly, new alternative OP-Unit with 2 and 3 operation rooms.

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ACCURACY OF LAMOST DR1 STELLAR PARAMETERS

  • GAO, HUA;ZHANG, HUA-WEI;XIANG, MAO-SHENG;HUANG, YANG;LIU, XIAO-WEI;LUO, A-LI;ZHANG, HAO-TONG;WU, YUE;ZHANG, YONG;LI, GUANG-WEI;DU, BING
    • Publications of The Korean Astronomical Society
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    • v.30 no.2
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    • pp.279-281
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    • 2015
  • We adopt the PASTEL catalog combined with SIMBAD radial velocities as a testing standard to validate the stellar parameters (effective temperature $T_{eff}$, surface gravity log g, metallicity [Fe/H] and radial velocity $V_r$) from the first data release (DR1) of The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey. After applying data reduction and temperature constraints to the sample obtained by cross-identification, we compare the stellar parameters from DR1 and PASTEL. The results show that the DR1 results are reliable under certain conditions. We derive a dispersion of 110 K, 0.19 dex, 0.11 dex and $4.91kms^{-1}$ in specified effective temperature ranges, for $T_{eff}$, log g, [Fe/H] and $V_r$ respectively. Systematic errors are negligible except for those of $V_r$. In addition, for stars with PASTEL [Fe/H] < -1:5, the metallicities in DR1 are systematically higher than those in PASTEL.

A Study of Forensic on Eavesdropping from VoIP and Messenger through WiBro Network (WiBro 네트워크에서 메신저, VoIP 도청 및 포렌식 연구)

  • Chun, Woo-Sung;Park, Dea-Woo
    • Journal of the Korea Society of Computer and Information
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    • v.14 no.5
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    • pp.149-156
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    • 2009
  • Korean WiBro becomes international standard to IEEE 802.16e, and We are carrying out a WiBro network business from capital regions. We executed eavesdropping about voices and messenger program and the VoIP which frequently happened in WiBro networks at these papers. We have a lot in common with the Wireshark which is a packet collection and an analyzer, and We execute eavesdropping, and We reproduce eavesdropping data with bases to a SIP, H.263, TCP, UDP protocol through packets. In time of a copy of a packet negative the VoIP which verify time with bases, and was eavesdropped on integrity packet and a X-Lite call record, be matched that a packet is counterfeit forgery did not work, and We demonstrate, and verify integrity. The data which integrity was verified put in a seaming envelope, and we prepare so as it is to a liver of investigator, and execute, and to be able to do use to proof data after seaming in courts in order to utilize as criminal investigation data.

Developing Metadata for Imagery and Gridded Data

  • Song, Yong-Cheol;Shin, Sang-Min;Kim, Kye-Hyun;Han, Eun-Young
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1140-1142
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    • 2003
  • Imagery and gridded data can be used as the sources of extracting important information and data layers in utilizing GIS. The existing metadata standard to distribute and to utilize the geographic information are mainly concentrated at the vector data and do not provide metadata components for imagery and gridded data. In this study, metadata components for imagery and gridded data have been investigated. Firstly, existing international metadata standards such as ISO and domestic standards of TTA have been analyzed. Based on th results, the draft metadata for imagery and gridded data have been proposed as the extensions of domestic metadata standard distribution. The draft metadata could contribute to build the basic standards to access and utilize proper imagery and gridded data fit to various application field, and this will be fundamental bases for activating GIS in public and private sectors.

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MRQUTER : A Parallel Qualitative Temporal Reasoner Using MapReduce Framework (MRQUTER: MapReduce 프레임워크를 이용한 병렬 정성 시간 추론기)

  • Kim, Jonghoon;Kim, Incheol
    • KIPS Transactions on Software and Data Engineering
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    • v.5 no.5
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    • pp.231-242
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    • 2016
  • In order to meet rapid changes of Web information, it is necessary to extend the current Web technologies to represent both the valid time and location of each fact and knowledge, and reason their relationships. Until recently, many researches on qualitative temporal reasoning have been conducted in laboratory-scale, dealing with small knowledge bases. However, in this paper, we propose the design and implementation of a parallel qualitative temporal reasoner, MRQUTER, which can make reasoning over Web-scale large knowledge bases. This parallel temporal reasoner was built on a Hadoop cluster system using the MapReduce parallel programming framework. It decomposes the entire qualitative temporal reasoning process into several MapReduce jobs such as the encoding and decoding job, the inverse and equal reasoning job, the transitive reasoning job, the refining job, and applies some optimization techniques into each component reasoning job implemented with a pair of Map and Reduce functions. Through experiments using large benchmarking temporal knowledge bases, MRQUTER shows high reasoning performance and scalability.