• Title/Summary/Keyword: Database(DB)

Search Result 1,498, Processing Time 0.027 seconds

Using Logistic Regression for Determining the Factors Affecting Bidding Success in World Bank's International Consulting Projects in Indonesia (로그 회귀분석을 이용한 해외 엔지니어링 사업의 낙찰 성공 요인 분석 - 세계은행의 인도네시아 사업을 중심으로-)

  • Yu, Youngsu;Shin, Byungjin;Koo, Bonsang;Han, Seungheon
    • Korean Journal of Construction Engineering and Management
    • /
    • v.19 no.1
    • /
    • pp.80-89
    • /
    • 2018
  • World Bank projects enable Korean engineering firms to enter new markets and diversify their portfolio. These firms need to understand the critical factors for bidding success in such projects. The World Bank publishes as open records all their bidding history data in their open database. This provides an opportunity to identify empirically the factors that determine which firms on chosen. This research collected relevant bid data, focusing on Indonesia, to perform a logistic regression with the goal of statistically identifying significant factors that result in bidding success. Results showed that work experience, being included in a consortium, and having a local partner positively affected winning a bid. On the other hand, having a local competitor of the recipient country negatively impacts the chances of attaining a bid. Commensurately, Korean engineering firms need to increase their work experience in internationally recognized projects, and include a local partner as a joint venture partner to increase their chances, while refrain from conventional projects that can be performed by local engineering firms.

A Study on Convergence Medical Efficacy of Native Chicken (재래닭의 의학적 효능 융복합연구)

  • Lee, Kang-Hyun;Park, Sang-Woo;Ji, Joong-Gu
    • Journal of Digital Convergence
    • /
    • v.13 no.9
    • /
    • pp.439-444
    • /
    • 2015
  • This study analyzes the chicken-related prescription shown in the literature summarized by standing tradition deliberate aims to investigate the clinical efficacy of native chickens. Therefore, The old traditional medicine books of native chickens translate and organize the relevant prescriptions. The manuscript old documents is prescribed by the old central documents sourced directly from generation to generation descendants technical publishing contemporary situation sake of the development of this unique formulation not only contemporary who established himself through numerous trials and errors. Browse almost circular in traditional medicine prescription, which is scattered throughout the country is difficult, and because of the loss can not be confirmed even its existence. This study is to establish the analysis and separated by organized to establish a database on the basis of prescription and mixed herbs in a variety of functional foods developed through usability evaluation methods of treatment. Therefore, the management systems of native chickens related to lack of knowledge and information to foster the continued expansion and specialized training and knowledge of the future growth engine industry through the added value of cultural projects of national knowledge resources. Finally, convergence research and evaluate the usefulness of native chickens through interdisciplinary research systems, and practical measures of functional foods and alternative medicine are presented as well.

Contents Based Partial Encryption of GIS Vector Map (GIS 벡터맵의 콘텐츠 기반 선택적 암호화 기술)

  • Jang, Bong-Joo;Lee, Suk-Hwan;Moon, Kwang-Seok;Kwon, Ki-Ryong
    • Journal of the Institute of Electronics Engineers of Korea CI
    • /
    • v.48 no.5
    • /
    • pp.88-98
    • /
    • 2011
  • Recently, according as the importance of GIS(geography information system) database security is embossed, much researches had been achieved about GIS network security. But most such researches are weak against sourceful illegal reproductions and distributions of GIS vector data map. In this paper, we proposed an efficient layer unit contents based partial encryption technique in the vector map compression domain to prevent illegal distributions and unauthorized accesses. This method achieves a partial encryption about each central coordinate and directional parameters of a MCA(minimum coding attribute) that is created at the vector map compression processing in the vector space. First, the position encryption is applied as permutating randomly the center coordinate of each record that is minimum unit of vector map shape. And second, the direction encryption that changing shapes of vector map topography is applied as encrypting the direction of vertices's coordinates of each record. In experimental results, we confirmed that our proposed method can encipher the large volumed vector map data effectively in low computational complexity. Also, we could minimize the decline of compression efficiency that occurred by conventional contents based encryption schemes using AES or DES algorithms.

Confidence Improvement of Serial Cadastral Map Edit Using Ortho Image (정사영상을 이용한 연속지적도 편집의 신뢰성 향상 방안)

  • Kim Kam Lae;Ra Yong Hwa;Ahn Byung Gu;Park Se Jin
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
    • /
    • v.22 no.3
    • /
    • pp.253-259
    • /
    • 2004
  • The sheetwise cadastral map data needs to become a Serial Cadastral Map (SCM) database for the promotion of the reliability of cadastral surveying, for the efficient operation of the Parcel Based Land Information System, and for the convenient use of land information as well. A large amount of money and time are required for the editing process of producing SCM DB in accordance with the $\ulcorner$Guideline for the Production of Serial Cadastral Maps$\lrcorner$ by the Ministry of Construction & Transportation if any of field surveying techniques is accompanied by. In addition, a boundary line that extends to a neat line does not meet the counterpart of the neighboring map sheet at a point. Such cases frequently occur and are much dependent upon the decisions of individuals in charge of editing or inspecting. The core processes of the research, firstly overlay SCM produced by the edition of the sheetwise cadastral maps with Autodesk Map on orthophoto images, secondly adjust the parcel boundaries which are delineated over more than one map sheet, and lastly compare the original boundary coordinates and areas with the corresponding adjusted ones and calculate root mean square errors (RMSEs). The research aims at promoting the quality of SCM by minimizing the inconsistency of parcel boundaries by means of the comparative analysis of the calculated RMSEs.

Spatial OLAP Implementation for GIS Decision-Making - With emphasis on Urban Planning - (GIS 의사결정을 지원하기 위한 Spatial OLAP 구현 - 도시계획을 중심으로 -)

  • Kyung, Min-Ju;Yom, Jae-Hong
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
    • /
    • v.27 no.6
    • /
    • pp.689-698
    • /
    • 2009
  • SOLAP system integrates and complements the functions of both OLAP and GIS systems. This enables users not only to easily access geospatial data but also to analyze and extract information for decision making. In this study a SOLAP system was designed and implemented to provide urban planners with GIS information when making urban planning decisions. Rapid urbanization in Korea has brought about ill-balanced urban structure as the result of development without detailed analysis of urban plans. Systematic urban planning procedures and automated systems are crucial for detail analysis of future development plans. Data regarding the development regulations and current status of land use need to be assessed precisely and instantly. Multi-dimensional aspects of a suggested plan must be formulated instantly and examined thoroughly using 'what if' scenarios to come up with a best possible plan. The SOLAP system presented in this study designed the dimension tables and the fact tables for supplying timely geospatial information to the planners when making decisions regarding urban planning. The database was implemented using open source DBMS and was populated with necessary attribute data which was freely available from the Statistics Korea bureau homepage. It is anticipated the SOLAP system presented in this study will contribute to better urban planning decisions in Korea through more timely and accurate provision of geospatial information.

Comparison of Methods Predicting VS30 from Shallow VS Profiles and Suggestion of Optimized Coefficients (얕은 심도 VS주상도를 활용한 VS30 예측 방법론 비교 및 최적 계수 제시)

  • Choi, Inhyeok;Kwak, Dongyoup
    • Journal of the Korean Geotechnical Society
    • /
    • v.36 no.3
    • /
    • pp.15-23
    • /
    • 2020
  • Ground motion models predicting intensity measures on surface use a time-averaged shear wave velocity, VS30, as a key variable simulating site effect. The VS30 can be directly estimated from VS profiles if the profile depth (z) is greater than or equal to 30 m. However, some sites have VS profiles with z < 30 m. In this case VS30 can be predicted using extension models. This study proposes new coefficient sets for existing prediction equations using 297 Korea VS profiles. We have collected VS profiles from KMA and Geoinfo database. Fitting six existing methods to data, we suggest new coefficients for each method and evaluate their performance. It turns out that if z ≥ 15 m, the standard deviation (σ) of residual in log10 is 0.061, which indicates that the estimated VS30 is nearly accurate. If z < 15 m, the σ keeps increasing up to 0.1 for z = 5 m, so we caution the use of models at very low z. Nonetheless, we recommend investigating up to 30 m depth for VS30 calculation if possible.

Development of Human Sense Indexes for Web-based Database and Its Supports (웹 기반 감성지표 개발 및 보급에 관한 연구)

  • 김진호;이동춘;박민용;임좌상;박수찬;윤정선;임현균;김경택
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
    • /
    • 1999.11a
    • /
    • pp.333-337
    • /
    • 1999
  • 본 연구의 목표는 감성적 제품이나 환경을 체계적으로 개발하고 평가하는 과정에서 요구되는 DB를 개발하는 것으로서, 산업체에서의 활용도가 높고 공공성이 큰 데이터를 중심으로 지표를 수집하여 보급체계를 확립하는 것이다. 이번 연구에서는 2 단계 감성공학기반기술 연구 결과인 충 35 개 보고서 전자 파일을 입수하여 감성지표화 작업을 수행하였다. Web 상으로 지원 가능한 감성공학 지표(정보물)를 도출 하였으며, 감성공학 문헌, Handbook, Data compendium, 사전 등을 중심으로 지표를 분류하여 체계화하였다. 연구보고서로부터 도출 된 초기 지표로는 감성지표 185 개, 개발 제품/시스템 소개물 94 개, 웹으로 지원 가능한 감성공학 관련 정보물 35 개가 있다. 이를 기초로 활용 가능한 지표를 엄선하였다. 감성 제품 개발에 필요한 감성지표를 쉽고, 편리하고, 정확하게 검색하고, 감성공학 연구 결과들을 체계적으로 정리하기 위해 지표의 표현 방법, 용어, 기술 수준 등을 표준화하였다. 초기 도출된 감성지표 리스트 중 활용가치가 높은 결과물을 중심으로 감성지표를 정리하였으며, 현재 262개 지표에 대해서 연구책임자의 검증을 거쳐 지표화 작업을 완료하였다. 이들 결과는 인터넷을 통하여 서비스를 실시할 예정이며, 앞으로 제품설계, 환경응용 기술로서 감성공학적 제품설계를 위한 guideline으로 사용될 것으로 기대된다. 또한 이들 지표를 보급하기 위한 목적으로 개발한 감성공학 데이터베이스 시스템은 감성공학 자료의 보급체계로 활용되어 기업간의 정보교환 및 커뮤니케이션 유도를 통한 기업체간의 기술 및 관리 유기체계 구축에 활용될 것으로 기대된다.하도록 한다. 이는 기초과학 수준이 높은 북방권 국가들의 과학자들이 주로 활용되고 있다는 점에서도 잘 알 수 있으며 우리의 과학기술 약점을 보완하는 원천으로써 외국인 연구 인력이 대안이 되고 있음을 시사한다. 본 연구에서는 한국 연구 조직에서 일하는 외국인 연구자들의 동기 및 성과에 영향을 미치는 많은 요인들을 확인할 수 있었다. 상관관계, 분산분석, 회귀분석 등을 통해 활용 성과에 미치는 영향 요인들을 도출하였다. 설문 분석을 통하여 동기 및 성과 사이에는 강한 상관관계가 존재하는 것을 확인할 수 있었으며 이는 전통적인 동기 이론들과 부합한다. 대부분의 변수가 동기 및 성과에 동시에 영향을 미치는 것으로 조사되었으며 그중에서도 조직 협력 문화, 외국인 연구자의 의사소통 및 협력성, 외국인 연구자의 연구 능력 관련 변수들 및 연구 프로젝트의 기술수명주기, 외국인 연구자의 기존 기술지식의 흡수 등이 가장 중요한 변수로 나타났다. 이는 우리가 주로 중국 및 러시아 과학자들을 활용하여 상업화하는 외국인 연구인력 활용 패턴과도 일치하는 결과이다. 즉 우호적인 조직문화를 가지고 있는 연구 조직에서, 이미 과학기술 지식을 많이 가지고 있고 연구 능력도 높은 외국인 과학기술자를, 한국에서 기술이 태동 또는 성장하고 있는 연구 분야에서 활용하는 것이 가장 성과가 좋다는 사실을 확인시켜 주고 있다. 국내에서 최초로 수행된 본 연구는 외국인 연구 인력의 활용 성과가 매우 높으며, 우리의 과학기술혁신시스템을 보완하는 유효한 수단으로써 외국인 연구 인력이 중요한 대안이 될 수 있음을 발견하였다. 외국인 연구 인력을 잘 활용하기 위하여 문제점 및 개선방안을 활용 환경, 연구 인력

  • PDF

A Study on Mapping Forest Fire Risk Using Combustion Characteristic of Forest Fuels : Focusing on Samcheok in Gangwon-do (산불연료의 연소특성을 활용한 산불위험지도 작성에 관한 연구 : 강원도 삼척 시를 중심으로)

  • Lee, Haepyeong;Park, Youngju
    • Journal of the Society of Disaster Information
    • /
    • v.13 no.3
    • /
    • pp.296-304
    • /
    • 2017
  • In order to predict about forest fire behavior we constructed a database for combustion characteristic of forest fuels in Samcheok, Gangwon-do and prepared fire risk map and fire risk rating using GIS method in this study. For the mapping autoignition temperature, ignition time, flame duration time, total heat release and total smoke release are selected as the standardized parameters and the overall risk rating was made up of the ignition risk parameters(autoignition temperature, ignition time) and the spread risk parameters(flame duration time, total heat release, total smoke release). Forest fire risk was classified into 5 grades and lower grade of fire risk rating mean to correspond to more dangerous forest fire. As a result, the overall risk rating of Samcheok was classified into three grades from 1 to 3 and Nogok-myeon and Miro-myeon were turned out the most dangerous areas for forest fire. Because of the colony of pine and oak trees and the higher fire loads, the flame propagation will be carried out quickly in these areas.

Design and Implementation of Picture Archiving and Communication System Component using the RFID for Mobile Web Environments (모바일 웹 환경을 위한 의료영상저장전송시스템 컴포넌트의 설계 및 구현)

  • Kim Chang-Soo;Yim Jae-Hong
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.10 no.6
    • /
    • pp.1124-1131
    • /
    • 2006
  • The recent medical treatment guidelines and the development of information technology make hospitals reduce the expense in surrounding environment and it requires improving the quality of medical treatment of the hospital. Moreover, MIS, PACS(Picture Archiving and Communication System), OCS, EMR are also developing. Medical Information System is evolved toward integration of medical IT and situation is changing with increasing high speed in the ICT convergence. Mobile component refers to construct wireless system of hospital which has constructed in existing environment. Through RFID development in existing system, anyone can log on easily to internet whenever and wherever. It is the core technology to implement automatic medical processing system. This paper provides a basic review of RFID model, PACS application component services. In addition, designed and implemented database server's component program and client program of mobile application that recognized RFID tag and patient data in the ubiquitous environments. This system implemented mobile PACS that performed patient data based db environments, and so reduced delay time of requisition, medical treatment, lab.

Trend of Research and Industry-Related Analysis in Data Quality Using Time Series Network Analysis (시계열 네트워크분석을 통한 데이터품질 연구경향 및 산업연관 분석)

  • Jang, Kyoung-Ae;Lee, Kwang-Suk;Kim, Woo-Je
    • KIPS Transactions on Software and Data Engineering
    • /
    • v.5 no.6
    • /
    • pp.295-306
    • /
    • 2016
  • The purpose of this paper is both to analyze research trends and to predict industrial flows using the meta-data from the previous studies on data quality. There have been many attempts to analyze the research trends in various fields till lately. However, analysis of previous studies on data quality has produced poor results because of its vast scope and data. Therefore, in this paper, we used a text mining, social network analysis for time series network analysis to analyze the vast scope and data of data quality collected from a Web of Science index database of papers published in the international data quality-field journals for 10 years. The analysis results are as follows: Decreases in Mathematical & Computational Biology, Chemistry, Health Care Sciences & Services, Biochemistry & Molecular Biology, Biochemistry & Molecular Biology, and Medical Information Science. Increases, on the contrary, in Environmental Sciences, Water Resources, Geology, and Instruments & Instrumentation. In addition, the social network analysis results show that the subjects which have the high centrality are analysis, algorithm, and network, and also, image, model, sensor, and optimization are increasing subjects in the data quality field. Furthermore, the industrial connection analysis result on data quality shows that there is high correlation between technique, industry, health, infrastructure, and customer service. And it predicted that the Environmental Sciences, Biotechnology, and Health Industry will be continuously developed. This paper will be useful for people, not only who are in the data quality industry field, but also the researchers who analyze research patterns and find out the industry connection on data quality.