• Title/Summary/Keyword: 지도모델

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Ehtiopiam Agricultural Extension System -The Past Experience, Present Status and Future Direction- (에티오피아 농촌지도사업의 현재와 미래)

  • Besha, Dagnachew Bekele;Park, Duk-Byeong
    • Journal of Agricultural Extension & Community Development
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    • v.21 no.1
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    • pp.219-244
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    • 2014
  • Agricultural extension service in Ethiopia was started in early 1950s with mandate of transferring local research outputs and technologies to farmers, and importing technologies and improved practices from abroad. Extension service provided in this early time was limited to areas surrounding the experiment stations. Since then, Ethiopian Agricultural extension service has passed through at least five stages: the land grant extension system, the Comprehensive Package Programs, the Minimum Package Projects, the Peasant Agricultural Development Program, and the Participatory Demonstration and Training Extension System (PADETS). The comprehensive package extension program was initially implemented in selected pilot areas and eventually to be scaled up to cover about 90% of the farming community within 15-20 years time. The program used demonstration plots managed by development agents and used to train farmers organized through various field days. However, since all of these programs were operational in only small areas, the vast majority of the country was out of their reach. Through Participatory Demonstration and Training Extension System, the extension service in Ethiopia has come under the spotlight and government debates and external reviews are putting additional scrutiny on the system. Despite this long history, the system is still in its infancy in terms of coverage, communication and institutional pluralism. Currently in Ethiopia the Agricultural extension is provided primarily by the public sector, operating in a decentralized manner through which extension is implemented at the district level. Therefore, the main focus of this paper is to scrutinize the past, the present and the future Agricultural extension system in Ethiopia.

Modeling Group Mobility from Individual Mobility Model (개별 이동성 모델부터의 집단 이동성 모델 도출)

  • Kim, Dong-Yup;Choi, Dong-Yun;Song, Ha Yoon
    • Proceedings of the Korea Information Processing Society Conference
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    • 2014.11a
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    • pp.376-379
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    • 2014
  • 본 논문에서는 사람의 이동정보인 위치데이터를 바탕으로 위치분석(Location Analysis)을 통해 나타난 개개인의 이동성 모델을 바탕으로 각 개인의 이동성 모델에서 나타난 군집들의 관계를 분석해 개인이 속한 집단의 이동성 모델을 만든다. 집단 이동성 모델은 개인의 모델에서 나타난 군집을 이용하는데, 각 군집을 만드는데 필요한 위치 정보들과 군집의 중심, 군집간의 거리의 값을 계산하여 새로운 통합 군집을 만든다. 새로 만드는 군집은 각 특징에 따라 Micro Cluster, Macro Cluster의 2가지로 분류하였다. 실제 수년간 수집한 2명의 통합 개인 이동성 모델을 바탕으로 집단 이동성 모델을 생성한다. 집단 이동성 모델 생성에는 R Language를 사용하였고 결과 모델을 지도상에 표시할 수 있다.

The Efficient Mobile GIS Service Model for Location Based Services (위치기반서비스를 위한 효율적인 Mobile GIS 서비스 모델)

  • 박성석;김종우;김창수
    • Proceedings of the Korea Multimedia Society Conference
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    • 2004.05a
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    • pp.843-846
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    • 2004
  • 최근 차세대 이동통신서비스로 부각되고 있는 위치기반서비스 응용의 핵심기술로 Mobile GIS 서비스에 대한 관심이 증가하고 있으며, 처리능력, 저장공간, 디스플레이, 데이터통신 환경에서 제한적인 환경을 가진 이동 컴퓨팅 환경에서 지리정보를 효율적으로 처리하기 위한 Mobile GIS 서비스 모델에 관한 연구 및 개발이 이루어지고 있다. 본 논문에서는 이러한 이동 컴퓨팅 환경의 제한된 환경에서 효율적인 Mobile GIS 서비스를 제공하기 위한 방법으로 지리정보 좌표의 바이너리화와 Base-Offset 구조를 사용하는 초경량 수치지도 모델을 제안한다.

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Range Detection of Wa/Kwa Parallel Noun Phrase using a Probabilistic Model and Modification Information (확률모형과 수식정보를 이용한 와/과 병렬사구 범위결정)

  • Choi, Yong-Seok;Shin, Ji-Ae;Choi, Key-Sun
    • Journal of KIISE:Software and Applications
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    • v.35 no.2
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    • pp.128-136
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    • 2008
  • Recognition of parallel structure at early stage of sentence parsing can reduce the complexity of parsing. In this paper, we propose an unsupervised language-independent probabilistic model for recongition of parallel noun structures. The proposed model is based on the idea of swapping constituents, which replies the properties of symmetry (two or more identical constituents are repeated) and of reversibility (the order of constituents is inter-changeable) in parallel structures. The non-symmetric patterns that cannot be captured by the general symmetry rule are resolved additionally by the modifier information. In particular this paper shows how the proposed model is applied to recognize Korean parallel noun phrases connected by "wa/kwa" particle. Our model is compared with other models including supervised models and performs better on recongition of parallel noun phrases.

SLM using GIS data formats for 3D virtual model of research (SLM 포맷을 이용한 GIS 데이터의 3D 가상모델에 대한 연구)

  • Han, Jeong-Ah;Seo, Laiwon
    • Journal of Digital Contents Society
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    • v.15 no.1
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    • pp.113-120
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    • 2014
  • In recent years, devices using the smart ponwa IT service is activated, to research how the fusion of two or more devices will be able to be interest in the soybeans. One of them in the mobile sector through the development of network and hardware digital geo-spatial map of the rapid advances being made and the computer, how do you map data to efficiently simulate a 3D environment, providing services through a virtual environment focused on whether be. In this study, augmented reality and GIS (Geographic Information System), SLM (Static LOD Model) that combines augmented reality technology on the basis of the basic concepts and approaches in geographic space and how Augmented Reality Based on this interpretation of the relevant content What to do in the development and utilization has a purpose. In this study, the conventional SLM 3DS model data structure of a data format conversion of the proposed possibilities for analyzing and, SLM model generation and format of the existing three-dimensional visualization tools SLM model format for converting a format to a model function, and visualization features. In addition, 3D virtual model to propose a format for efficiently making.

A Study on the Web-based Map Algebraic Processor (웹 기반 지도대수 처리기에 관한 연구)

  • 박기호
    • Spatial Information Research
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    • v.5 no.2
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    • pp.147-160
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    • 1997
  • "The "Map Algebra", beeing recognized as a viable theoretical framework for GIS (Geographica Infonnation System), models map layers as "operands" which are the basic unit of geo-processing, and a variety of GIS commands as "operators." In this paper, we attempt at lifting some limitations of map algebras proposed in GIS literature. First, we model map layer as "function" such that we may employ the notion of meta operator (or, higher-order funtion) available in the functional programming paradigm. This approach provides map algebraic language with "programmability" needed in GIS user language. Second, we extend the semantics of, and improve on the sytactic structure of map algebraic language. Mer the data model and language associated with map algebra are formalized, we proceed to design and implement a prototype of map algebraic processor. The parser of the language in our prototype plays the role of transforming the native and heterogeneous user language of current GISs into a canonical map algebraic language. The prototype, named "MapSee" is a proof-of-concept system for the ideas we propsed in this paper. We believe that the uniform interface based on the map algebraic language will make promising infrastructure to support "Internet GIS." This is because the uniform but powerful interface through the Web clients allow access to both geo-data and geo-processing resources distributed over the network.to both geo-data and geo-processing resources distributed over the network.

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Design and Implementation of a Mapping Middleware for Wireless Internet Map Service (무선인터넷 지도서비스를 위한 매핑 미들웨어의 설계와 구현)

  • 이양원;박기호
    • Spatial Information Research
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    • v.12 no.2
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    • pp.165-179
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    • 2004
  • With the spread of wireless internet, the interest in mobile applications and services is increasing. Korea Wireless Internet Standardization Forum has been establishing the standards for mobile platform and map service in the wireless internet environment. This study aims to present a paragon of mapping middleware that plays the role of broker for wireless internet map service: in particular, it focuses on the interoperability with generic map servers. In this study, we developed a method for applying current map servers to the wireless internet map service, and analyzed the request/response structure of the map servers which have different operation characteristics in order to allow our middleware to fully utilize the functionalities of the map servers. The middleware we developed is composed of .NET-based XML Web Services: it has a lightweight module for image map and a map representation module for choropleth map, symbol map, chart map, etc. This mapping middleware is a broker between mobile client and generic map server, and supports .NET clients and Java clients as well. Its component-based interoperability grants the extensibility for the wireless internet dedicated map servers of the future in addition to the current generic map servers.

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Development of Climate Analysis Seoul(CAS) Maps Based on Landuse and Meteorogical Model (토지이용도와 기상모델을 이용한 서울기후분석(CAS)지도 개발)

  • Yi, Chae-Yeon;Eum, Jeong-Hee;Choi, Young-Jean;Kim, Kyu-Rang;Scherer, Dieter;Fehrenbach, Ute;Kim, Geun-Hoi
    • Journal of the Korean Association of Geographic Information Studies
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    • v.14 no.1
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    • pp.12-25
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    • 2011
  • It is needed to preserve good effects and to prevent bad influences on local climate in urban and environmental planning. This study seeks to develop climate analysis maps to provide realistic information considering local air temperature and wind flows. Quantitative analyses are conducted by CAS for the production, transportation, and stagnation of cold air, wind flow and thermal conditions by incorporating GIS analysis on land cover and elevation and meteorological analysis from MetPhoMod - a mesoscale weather model. The CAS helps The easier analysis and assessment of urban development on local climate. It will contribute to the better life of the people in cities by providing better understanding of the local climate to the urban space planners.

Development of Coordinate Transformation Tool for Existing Digital Map (수치지도 좌표계 변환 도구 개발)

  • 윤홍식;조재명;송동섭;김명호;조흥묵
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.22 no.1
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    • pp.29-36
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    • 2004
  • This study describes the development of coordinate transformation tool for transforming the digital map using newly derived transformation parameters which are determined from the data referred to the local geodetic datum and the geocentric datum (ITRF2000) and the distortion modelling derived from collocation method. We prepared 190 common points and used 107 points to calculate 7 transformation parameters. In order to evaluate an accuracy of coordinate transformation, 83 common points were tested. In this study, we used Molodensky-Badekas model to derive the 7 transformation Parameters. An accuracy of 0.22m was obtained applying 7 Parameters transformation and the distortion modelling together. It shows that the accuracy of coordinate transformation is improved 72% against the result of 7 parameters transformation only. We developed the transformation tool, GDKtrans, which can be transformed the digital map of scales 1/50,000, 1/25,000 and 1/5,000. We also analyzed the digital map of l/5,000 at six urban areas by GPS observations. The result shows less RMSE of about 1.9 m and large disagreement at position and features. Consequently, we suggests that l/5,000 digital map is necessary of whole revision.