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Papers - Yan, Wanglin

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住民ワークショップによるSWOT分析と震災復興計画の策定の試み

厳網林, 小林知記, 大場章弘, ウイリアムガロウエイ, 中田謙太郎, 池下智之, 村杉汐音

地理情報システム学会講演論文集 (地理情報システム学会) 22 2013.10

Joint Work

Monitoring shoreline change o Djerba Island using GIS and multi-temporal satellite data

Bouchahama Majed and YAN Wanglin

Arabian Journal of Geosciences (Springer) 6 ( August ) 2013.08

Research paper (scientific journal), Joint Work, Accepted

Design of livestock management tool for climate change risk in Mongolia

A. Oba, W. Yan

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 39 437 - 438 2012

Accepted, ISSN 1682-1750

© 2012 ISPRS. In Mongolia, from 1999 to 2001 and 2009 to 2010, about 10 million livestock animals were seriously died due to starvation and the cold by effects of overgrazing and Zud: extreme snow in winter season. Thus, it is required to reduce its risk by controlling number of overwinter livestock animals. In order to do that, it is required to simulate how many animals do herders have to sell followed by carrying capacity. In order to avoid climate risk, it is necessary to manage farming comprehensively and control livestock numbers. Nevertheless it needs to consider about management, we have to research information about each management under different conditions of each area in all Mongolia. Thus, it needs to survey livestock management workflows of regional administration and GIS data about rangeland areas and their attributes in order to evaluate their nomadic life and their livestock objectively. It is essential to use some tools that have the function of processing the spatial data. It could cover wide areas and have different abilities for spatial relations. To solve this problem; we analyzed management workflows of herder and regional administration working in Mongolia, and designed a hierarchical structure of tables and data layers with the relational database. With this structure, we developed the structure of a WebGIS tool on the Adobe Flex platform for livestock management visually. It will be also useful for them to improve the accountability of activities. This system is a versatile WebGIS tool which can interact with various spatial scales.

Long-term coastal changes detection system based on remote sensing and image processing around an island.

Maged Bouchahma, Wanglin Yan

Proceedings - 2012 20th International Conference on Geoinformatics, Geoinformatics 2012 (IEEE) 1 - 5 2012

Accepted

As an island ecosystem, Djerba, a region of Tunisia located on the southern shore of the Mediterranean Sea, is characterized by limited natural resources and threatened by land degradation due to rapid socio-economic development and heavy human-induced changes to the landscape. The objective of this study is to build a system based on computer vision and remote sensing data for monitoring changes in the coastal zones of an island. We employed monthly Landsat Thematic Mapper (TM) satellite images of the study area ranging from 1984 to 2009. The images were preprocessed using the Speeded Up Robust Features (SURF) algorithm to superimpose remote sensing images at exactly the same coordinates. We then used comparison technique to auto-validate the detection of changes. The technique is based on a window-to-window comparison of the coastal zones. Three highly affected regions were identified. The Bin El-Ouidiane (in the southeast) and Rass Errmal (in the north) regions underwent deposition during the study period, whereas the region of Rass El Kastil (in the north) underwent high erosion. © 2012 IEEE.

Access to Document (DOI)

Integration of flood forecasting model with the web-based system for improving flood monitoring, and the alert system

Ponthip Limlahapun, Hiromichi Fukui, Wanglin Yan, Tomohiro Ichinose

2011 11TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS (ICCAS) (IEEE) 767 - 772 2011

Accepted, ISSN 1598-7833

Limited flood disaster information causes insufficient justification for public awareness, therefore, improving flood practice management is needed. This paper applies the flood forecasting model and atmospheric model to identify rainfall distribution and to investigate the threshold values for alert system. The entire system aims to improve flood monitoring, information distribution and an alert system. The geospatial web based system is established to facilitate public awareness by allocating information in timely manner without cumbersome software installation.The process to obtain rainfall and river discharge data, input and transfer data, through the database can be launched after other parameters i.e. elevation, soil, land cover, and basin boundary are set. The entire process takes approximately 15 minutes. The flood warning system and the geospatial web based system are connected to the database and promptly alert in the case of emergency.The yields prove promising results, based on the amount of time and viable function. The existing rainfall spatial based pattern, received from the atmospheric model, takes about 72 minutes to achieve one hourly image. It is a suitable model for observing regional rainfall distribution. It does not serve immediate alert purpose in the emergency situation due to it is too time consuming.

Onigokko: a pervasive tag game for spatial thinking.

Wanglin Yan, Tatsuya Maeda, Akihiro Oba, Chisho Ueda

ACM International Conference Proceeding Series (ACM) 40 - 2 2011

Accepted

This article considers the development of a traditional Japanese tag game, Onigokko in terms of critical spatial thinking. Cameraembedded GPS mobile phones are used as a tool for positioning, touching, and communicating. A web server is used for planning games, monitoring the movements of teams and sharing information among players. Using city streets or country villages as playgrounds, team members collect points by visiting checkpoints and touching (i.e. taking photographs) enemy teams. Real-time communications by mobile phones enable players to think spatially and move strategically. The experiment demonstrates that the system functions well. The game is perceived as thrilling and is therefore able to foster a remarkable improvement in critical spatial thinking.

Access to Document (DOI)

中国の都市システム

YAN Wanglin

統計 (日本統計協会) 2010 ( 8 ) 21-28 - 28 2010.08

Research paper (scientific journal), Single Work, ISSN 0285-7677

Mashing up geospatial data services: Implications of acceptable use policies

Songnian Li, Wanglin Yan

Geomatica 64 ( 1 ) 111 - 122 2010

Accepted, ISSN 1195-1036

On average, mashups tagged with the keyword "mapping" account for about 40% of the total mashups currently developed. One major cause for this phenomenon are the widely-available, free, online mapping services provided by mainstream IT firms. For example, Google has developed easy-to-use map application programming interfaces (APIs) and estimates over 150 million visitors to its map services as of May 2009. However, this unprecedented development of Web 2.0 functionality has been subject to existing acceptable use policies accompanying the services and service APIs. This paper reviews and analyzes the existing Terms of Use or Terms of Service from a number of private online mapping service providers, and presents observations on the potential social, organizational, and technical implications of the current acceptable use policies in developing map mashups and related applications. It argues that existing acceptable use policies may not support a healthy mashup ecosystem.

New Origin of Tianfu: an Ecological Reconstruction Plan of the Dujiangyan City after the Sichuan Earthquake

ISHIKAWA Mikiko, YAN Wanglin, CUI Hang, KATO Takaaki and ZHAO Wei

Ideal Space (同済大学出版社：中国上海) 30 115-120 2008.12

Research paper (scientific journal), Joint Work

A study on the spatial distribution and factors of the farmland diversion for parking field or dump-site in suburban area

INABA Yoshiyuki and YAN Wanglin

Journal of Environmental Information Science (環境情報科学センター) 22 547-552 2008.12

Research paper (scientific journal), Joint Work, Accepted

This paper aims to investigate the spatial distribution and the factors of the farmland diversion for parking field or dump-site using GIS and statistical analysis. The results are described as follows: 1) These type of farmland diversion has increased since 2000 in the urbanization control area in the suburb. 2) It is shown that there are different types of special distribution between the farmland diversion and the cultivation abandonment. 3) This phenomenon is caused by agricultural and urbanized factors especially intensive horticulture.

ALOS/PRISM画像を用いた地震による建物倒壊状況の抽出

YAN Wanglin

第38回土木計画学年次学術発表会 38 2008

Research paper (conference, symposium, etc.), Joint Work

Development of method for detection of grazing activities with time-series satellite images in Plateau Region

Hiroyuki Miyazaki, Ryosuke Shibasaki, Wanglin Yan

28th Asian Conference on Remote Sensing 2007, ACRS 2007 2 794 - 799 2007

Accepted

There are serious land degradations caused by overgrazing in Qinghai-Tibet Plateau. Regional planning to preserve the plateau ecosystem is urgently needed. In this study, multi polynomial regression between EVI derived from MODIS satellite images and natural conditions for each pixel in time-series is taken at grazing land and conservation area. The result shows the response of EVI to land surface temperature and precipitation has a strong spatial auto correlation, and has significant relationships with elevation. The relationship expects the affection of grazing activities. In addition, the residuals are associated to the existence of grazing activities. This knowledge will be useful for mapping of grazing activities and the affection.

The assessment of ecosystem services of"satoyama" in suburban area - A case study in north west fujisawa area

Yoshiyuki Inaba, Wanglin Yan

Proceedings of 10th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2007 1 - 12 2007

Accepted

This paper aims to estimate the economic value of ecosystem services in the suburban Satoyama area. First, we have grouped ecosystem services into 13 indices based on Millennium Ecosystem Assessment. Land use data at 1/2500 scale is used for mapping ecosystems and 12 categories were classified, in consideration of the characteristic of the suburban Satoyama region such as paddy field and abandoned cultivation. Then, we have made 5 terms of land use maps(1955-2005) with GIS and traced the transition of the land use for 50 years. Agricultural productive service was estimated from statistical data. Regulating services were estimated from models of research in the past that is applicable to Satoyama region. Cultural service and supporting service were surveyed with questionnaires and estimated by Contingent Valuation Method (CVM). Consequently, productive service value of 3 billion yen and Regulating and cultural service of 0.6 billion yen were estimated.

Mapping the spatial structure of urban canopy layers with GIS and remotely sensed TIR images

Wanglin Yan

Proceedings of 10th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2007 1 - 13 2007

Accepted

This study, conducted to support for urban thermal environment planning, developed a new method for mapping the spatial structure of urban canopy layers. The technique, called Raster-Patch-Cluster Scheme, employs landscape and ecological indicators combined with thermal characteristics identified by use of thermal satellite images. It was found that the urban thermal environment develops at the local scale and exhibits differences in density and forms of canopy layers. ASTER/TIR with 90 m resolution was found to be a useful data source for elucidating such local climatic phenomena. The intensities of local heat or cool islands exhibit significant logarithmic relationships with the size of urban canopy features. This means that the extent and intensity of urban heat islands increases with the expansion of urbanized areas of a city as well as with the agglomeration of land use intensity. The conclusions suggest that mitigation measures for the prevention of urban island development are likely to be effective if implemented at early stages of urbanization.

Analysis of the geographical process of land degradations in plateau region with time-sereies satellite images

Hiroyuki Miyazaki, Ryosuke Shibasaki, Wanglin Yan

Asian Association on Remote Sensing - 27th Asian Conference on Remote Sensing, ACRS 2006 806 - 811 2006

Accepted

There are serious land degradations caused by overgrazing in Qinghai-Tibet Plateau. Regional planning to preserve the plateau ecosystem is urgently needed. In this study, we develop a method to detect land degradations using time-series satellite images with a concept of resistance and resilience. A case study on plain field in Qinghai-Tibet plateau shows significant relationships between land degradation and topographical factors. In addition, the tendency of grazing activities had changed over the drought year. This knowledge will assist to predict the process of land degradations caused by grazing activity and prevent grazing activity to invade preserved area.

住民主体とした里山景観保全活動のためのGISモデルの開発と実証実験

YAN Wanglin

第３回研究助成事業成果報告会資料集 (財団法人日本建設情報総合センター) 193-414 2005.11

Research paper (other academic), Single Work

環境時代の都市再生戦略－自然資本に立つ地域自立へのみち、

YAN Wanglin

個性かがやく都市の再生 (全国市長会) 41-44 2005.10

Research paper (conference, symposium, etc.), Single Work

総合政策学による環境ガバナンスの実践－東アジアにおける環境問題と国際政策協調スキームの構築－

YAN Wanglin

総合政策学ワーキングペーパー (慶應義塾大学) ( 79 ) 1-36 2005.08

Research paper (bulletin of university, research institution), Joint Work

地域の環境特性がヒートアイランドの空間構造に与える影響に関する景観生態的分析

YAN Wanglin

平成15〜16年度科学研究費助成金研究成果報告書 88 2005.03

Research paper (other academic), Single Work

京都議定書クリーン開発メカニズム（CDM）による持続可能な植林スキームの構築－慶應義塾大学と中国瀋陽市林業局の共同実験－

厳網林, 小島朋之, 早見均

総合政策学ワーキングペーパー (慶應義塾大学) ( 56 ) 1-20 2005.01

Research paper (bulletin of university, research institution), Joint Work

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