• 제목/요약/키워드: geographical information

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비정규삼각망 데이타구조에 의한 지형의 수치화 (A Study on the Digitizing of Terrain by Triangulated Irregular Networks)

  • 이석찬;고영호;이창경;최병길
    • 대한토목학회논문집
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    • 제14권2호
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    • pp.325-334
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    • 1994
  • 현대는 고도의 정보화시대로 좀더 효과적인 지형정보를 요구한다. 특히 토지이용이 집약적으로 이루어지고 있는 우리나라에서는 좀더 종합적이고 체계적인 지형정보시스템을 필요로 하는데 이를 위하여는 지형의 수치화가 선결조건이다. 본 연구는 이러한 지형정보시스템의 근간을 이루는, 지형의 수치화에 적합한 데이터 구조를 개발하는데 그 목적을 두었다. 지형을 수치화하는데는 일반적으로 정규격자망 형태의 데이터 구조가 널리 이용되었다. 그러나 정규격자망은 그 구조가 단순하고 간단한 반면에 지형특성을 잘 반영하지 못하는 단점을 가지고 있다. 따라서 본 연구에서는 데이터 구조는 복잡하지만 지형특성을 잘 살릴 수 있고 여러 응용분야에 있어서 유용한 비정규삼각망 데이터 구조를 연구, 개선함으로써 좀더 효율적인 수치지형모델을 구축하고자 하였다.

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"만기요람(萬機要覽)" "재용편(財用篇)"의 지리적 해석 (Geographical interpretation of the Chapter on Economy in (財用篇) the Mangiyoram)

  • 손용택
    • 한국경제지리학회지
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    • 제12권2호
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    • pp.195-214
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    • 2009
  • 만기요람은 조선후기 왕명에 의하여 편찬된 국정운용 지침서로서 엮어진 책이다. 특별히 재용 편을 통해서는 당시의 조선후기 국가재정의 이모저모를 일목요연하게 엿볼 수 있다. 만기요람 재용 편에서 오늘날에도 중시되고 있는 비철금속 자원으로 금, 은, 구리, 납의 생산지 분포와 성쇠 및 종류별 용도를 자세히 설명하였다. 농업지리 내용으로 연간 곡물 총생산량과 전답 및 전세(田稅) 부과와 그 기준 뿐만 아니라, 고금을 통해 외부세계에 널리 알려진 인삼에 대해, 그리고 수리(水利)를 위한 제언(堤堰)의 분포와 기능 등을 밝히고 있다, 한편, 소나무의 종류, 분포 및 봉산(封山)정책 등의 내용은 임업지리 관련내용이라 할 수 있다. 상업지리 관련내용으로 육의전(六矣廛), 시전(市廛), 평시서(平市署), 난전(亂廛), 향시(鄕市) 등 여러 장시(場市)의 종류와 북쪽 변방의 국경시장인 회령개시(會寧開市)와 경원개시(慶源開市)의 분포와 규모, 성쇠 등에 대해 설명하고 있다. 교통지리와 관련한 내용으로 조창(漕倉)의 분포와 기능 등 다양한 당시의 지리관련 내용들이 들어있다. 이들 내용들은 현대 지리적 분류체계와 연결시켜 해석하여 보면 대단히 의미 있는 지리정보들임을 알 수 있다. 당시 나라의 임금이 비망록처럼 지척에 두고 읽는 책자 속에, 실용적 지리관련 지식과 필요한 정보들이 국왕의 국정운용에 직결되는 요체로서 정리되어 매우 중요하게 쓰이고, 커다란 영향을 미쳤음을 짐작할 수 있다.

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도시정보시스템 활성화를 위한 모바일 GIS 시스템 (A Mobile Geographical Information System to Enhance the Use of Urban Information System)

  • 조혜경;김상은
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2003년도 추계학술발표논문집 (상)
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    • pp.447-450
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    • 2003
  • 지방자치단체 업무를 지원하기 위해 구축된 지리정보 활용 시스템을 UIS (Urban Information System : 도시정보시스템)라 한다. 본 논문은 각 지방자치단체가 많은 비용을 투자하여 개발한 UIS 활용을 극대화하기 위해 지방자치단체의 현장업무 중심의 UIS에 GPS와 PDA을 결합한 LBS(Location-Based Service:위치기반서비스) 시스템을 제시한다. 본 연구에서 제시된 시스템을 개발하여 활용한다면 현재 UIS의 가장 큰 문제점인 데이터베이스 유지보수 비용을 절감할 것이라 기대된다.

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LiDAR 데이터의 Quad Tree 구조 표현과 압축에 관한 연구 (Quad Tree Representation and Compression for LiDAR Data)

  • 이효종;우승용;조기성
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2008년도 하계종합학술대회
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    • pp.753-754
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    • 2008
  • LiDAR data are acknowledged as very useful method to represent 3-D geographical information. In this paper aquad tree has been utilized to represent the 3-D spatial information. Compression algorithm is implemented based on a given threshold. The efficiency of compress is very high with large threshold values.

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GIS를 활용한 대기오염분포도 작성에 관한 연구 (Study of the Air Quality Mapping Using GIS)

  • 최병길;라영우
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2003년도 춘계학술발표회 논문집
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    • pp.415-420
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    • 2003
  • GIS technique was applied to the analysis of ambient air quality information. For this study, the air quality information was imported with the geographical information in Capital Area. This study well proves that GIS technique has a great deal of potential to analyze those air quality information, to produce useful information, and to ease the efforts for air quality improvement. Concerning about the data interpolation, the discrepancy caused by applying different method was ignorable, although Kriging method is further developed.

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조선왕조(朝鮮王朝)의 읍지연구(邑誌硏究) (A Study on the Eubj(邑誌) in the Yi Dynasty -Based upon the existing Eubjis-)

  • 김전배
    • 한국비블리아학회지
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    • 제2권1호
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    • pp.211-235
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    • 1974
  • A. The principal geographical descriptions compiled by the government during Yi dynasty started from the Shinchan-Paldo-Chiriji(新撰八道地理志) which was compiled by the royal decree in the sixth year (1424) of King Sejong(世宗) and it ended in the Jungbo-Munhonbiko(增補文獻備考) which was published in the second year(1908) of Yunghyi(隆熙). The process of their compilations can be divided into four steps according to the compilatory work's contents of the principal geographical descriptions which were compiled through the Yi dynasty. We can say that the first step (1424-1454) of those works began at the date of the compilation of the Shinchan-Paldochiriji and it ended in the date of the compilation of the "Sejongsilok-Chiriji"(世宗實錄地理志), and during that period the Kyonsangdo-Chiriji(慶尙道地理志) was published. In the second step(1455-1531), were published the Paldochiriji,(八道地理志), Kyongsangdosokchanchiriji(慶尙道續撰地理志), DonggukYojisungnam(東國與地勝覽) and the third step (1532-1769) began at the date of the compilation of the Dongguk-Munhonbiko(東國文獻備考) and it ended in the date of the publication of the Jungbo-Munhonbiko(東國文獻備考), and in that period the Jongjung-Munhonbiko(訂增文獻備考) was published. The works of compilation of the Eubjis in the period of King Kojong(高宗) came within the category of the fourth step. B. Generally speaking, the state geographical descriptions were composed of the regional data of the country which were collected and arranged. In other words, firstly, the Eubjis were compiled in each county, secondly, the Dojis(道誌) were compiled based upon the collections of all the Kunjis(郡誌), lastly, the government collected all the Dojis and compiled them into the state geographical descriptions. The Eubjis in the early days of Yi dynasty were compiled as the data for the compilation of the nation-wide geographical descriptions, but the Eubjis in the age of King Kojong were compiled as the administrative data. C. The main contents of the Eubjis were composed of the descriptions on the geography, history, industry, naval and military affairs, traffics, communication, administration, economy and society, and of the matters on the prose and poetry, persons of loyalty, historic remains, social customs and schools. Consequently, the above-mentioned data will be contributed to the study on the structures of the geography, history, economy, administration, education, naval and military affairs and traffics as well as the study on the literature, social customs and bibliography. Especially, they will be important data for the arrangement of cultural assets of our country. Furthermore, because the traditional study of national literature was centered around the study on the central government ignoring the study on the regional matters, the study of the Eubjis will be worthy of being valued.

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Telecommunications Infrastructures and Services Development and Challenges in Nepal

  • Shrestha, Surendra;Adhikari, Dilli Ram
    • International Journal of Internet, Broadcasting and Communication
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    • 제9권2호
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    • pp.27-36
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    • 2017
  • The world's unique geographical, multilingual, multiethnic, multiracial and multi religious Himalayan country Nepal has more than 100 years history on telephony service and it has been formulating appropriate policy and regulation for the adoption of new technology, introducing the competitive market environment for the overall development of Information and Communication Technology (ICT) infrastructures and application of ICT service and tools for socio-economic transformation. The Nepalese market seems to be continuously growing and having huge demand of mobile telephony and internet subscriptions trend. The ICT infrastructure development in difficult geographical area is quite challenging and thus operators are focusing mobile telephony and mobile internet services. Nepal has been doing its best effort on formulating policy and regulation, adoption key strategies for ICT sector development and at the same time joining hands with international and regional bodies such as ITU, SAARC etc for ICT sector development. Due to geographical diversity, policy and regulatory barriers in some extent, power supply constraints and low affordability from customers on ICT tools and services, Nepal has been facing challenges on ICT infrastructure development. However, the national statistics on ICT, Networked Readiness Index and ICT Development Index show that Nepal has done quite good progress and is keeping its pace on ICT development despite the these challenges. Moreover, there seems to be quite uncovered market segments on internet service and big opportunity on ICT sector development in Nepal in the days to come.

학습스타일과 지리교과 내용특성 (A Study on Learning Style and Geography Subject Matter)

  • 장의선
    • 대한지리학회지
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    • 제39권1호
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    • pp.132-152
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    • 2004
  • The critical point in this research is that the research on the phenomenon "teaching geography" should include how various elements consisting of the phenomenon are interrelated with each other in diverse angles, not deal with only teaching methods. This research focused on the relationships of the three components of teaching geography : contents of geography subject matter; learner; and scaffolding. Firstly, the characteristics of contents of geography subject matter were analyzed. Geographical knowledge was classified into four categories based on the way of perception. And then the selected geographic contents for this study were done didactic transposition into materials for geography education. These can be presented in a specific classification system from a context of geography education. Secondly, four categories of learning styles were divided by the way learners perceive and process information : Diverger; Assimilator; Converger; Accommodator. Each was connected with learner′s preferred contents of geography subject matter. The correlation between divergers and typical CulturalㆍHistorical Geography and Environmental Geography was high. So was between assimilators and typical Physical Geography and UrbanㆍEconomic Geography. Learners of Converger style tend to prefer GIS and Cartography. Finally, Regional Development and Regional Environmental Problems were highly correlated with accommodators.

GIS를 이용한 해도정보의 활용방안 연구 (A Study on the Application of Nautical Charts보 Information Using GIS)

  • 김종규;김정현
    • 한국해양공학회지
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    • 제17권1호
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    • pp.61-66
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    • 2003
  • A nautical chart is an essential material not only for the safety of navigation at sea, but also for the research and understanding of the ocean. Paper nautical harts have been used for navigational purposes for several hundreds years, but it was show that paper nautical charts have certain limitations, because the speed of ships has increased dramatically, and Global Positioning Systems (GPS) are now available at sea. Thus, the development of digital charts has been conducted by a number of countries. As a result, the International Hydrographic Organization (IHO) has developed a standard format, Special Publication No. 57 (S-57), as a guideline for the production of electronic navigational charts (ENC). Even though ENCs are a state-of-the-art navigational tool because they are produced on the basis of Geographical Information System (GIS) technology, they can be utilized for various purposes. in this paper, the usage of paper nautical charts, ENCs, and digital charts is reviewed. Also, the various application system that make use of electronic navigational harts and digital charts, as a basic geographical source of information, will be examined on the basis of GIS.

우리나라 광역시 인구규모의 적정성 분석 (Analyzing an Optimality of Urban Population Size for Metropolitan Area of Korea)

  • 박주형;김의준;최명섭
    • 한국경제지리학회지
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    • 제13권3호
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    • pp.487-497
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    • 2010
  • 본 연구의 목적은 도시의 소득 및 지출함수를 이용하여 우리나라 7대 광역시의 인구규모가 적정 수준에 있는 지를 분석하는 것이다. 효용극대화 가계와 이윤극대화 생산자 문제의 균형인구를 완전경쟁조건으로부터 도출한 결과, 최적인구 규모는 도시의 기술수준 및 공공서비스 수준에 의해 결정된다. 이러한 측면에서 각 도시의 인구규모 수준을 살펴보면 서울, 부산, 대구, 인천 등은 과밀한 것으로 광주, 대전, 울산 등은 과소한 것으로 나타났다.

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