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Modeling urban structures using graph-based spatial patterns

Emel Dogrusoz, Selim Aksoy
2007 2007 IEEE International Geoscience and Remote Sensing Symposium  
Next, this graph is clustered by thresholding its minimum spanning tree.  ...  We introduce a new method for modeling the spatial arrangements of geospatial objects.  ...  Building groups are formed by thresholding the minimum spanning tree of this graph.  ... 
doi:10.1109/igarss.2007.4423941 dblp:conf/igarss/DogrusozA07 fatcat:6frjw2krerb5nkhsqaedprn7ue

Climate tolerances and trait choices shape continental patterns of urban tree biodiversity

G. Darrel Jenerette, Lorraine W. Clarke, Meghan L. Avolio, Diane E. Pataki, Thomas W. Gillespie, Stephanie Pincetl, Dave J. Nowak, Lucy R. Hutyra, Melissa McHale, Joseph P. McFadden, Michael Alonzo
2016 Global Ecology and Biogeography  
Methods We examined variation in tree community taxonomic diversity, origins and production of an aesthetic ecosystem service trait in a cross-section of urban field surveys.  ...  Variation among urban tree communities in richness, origins and the provisioning of an aesthetic ecosystem service were all correlated with minimum winter temperature.  ...  We appreciate the help of the many research teams who helped collect the tree sample data.  ... 
doi:10.1111/geb.12499 fatcat:ashafpj45jeefckg2vmnfayyoi

The backbone of a city

S. Scellato, A. Cardillo, V. Latora, S. Porta
2006 European Physical Journal B : Condensed Matter Physics  
By using as sample cases the cities of Bologna and San Francisco, we show how the obtained trees are radically different from those based on edge lengths, and allow an extended comprehension of the "skeleton  ...  Here we show how it is possible to extract the backbone of a city by deriving spanning trees based on edge betweenness and edge information.  ...  A Minimum Length Spanning Tree (mLST) is then a spanning tree with weight (cost) smaller than or equal to the weight of every other spanning tree of the graph.  ... 
doi:10.1140/epjb/e2006-00066-4 fatcat:iobmdye7rnak7ihgxgpsq4t4nq

A multi-scale method of mapping urban influence

Timothy G. Wade, James D. Wickham, Nicola Zacarelli, Kurt H. Riitters
2009 Environmental Modelling & Software  
The method presented here uses a clustering approach to look beyond the extant urban area at multiple scales.  ...  Many methods to map urban areas have been developed and used in the past, but most have simply tried to map existing extent of urban development, and all have been single-scale techniques.  ...  This manuscript has been subjected to the EPA's peer and administrative review and has been approved for  ... 
doi:10.1016/j.envsoft.2009.03.006 fatcat:qphenby5jjewtmu57ui7twuzni

Characterization and Detection of Building Patterns in Cartographic Data: Two Algorithms [chapter]

Xiang Zhang, Tinghua Ai, Jantien Stoter
2012 Lecture Notes in Geoinformation and Cartography  
Many previous work has however focused on a few specific patterns (i.e. collinear pattern), while many others are less discussed.  ...  Building patterns are important features in applications like automated generalization and spatial data mining.  ...  International Institute for GeoInformation Science and Earth Observation (ITC), University of Twente, which funds the first author as a PhD student is gratefully acknowledged.  ... 
doi:10.1007/978-3-642-25926-5_8 fatcat:ruedqb4llfdchgregonjwc6ssu

Phenological data series of cherry tree flowering in Kyoto, Japan, and its application to reconstruction of springtime temperatures since the 9th century

Yasuyuki Aono, Keiko Kazui
2008 International Journal of Climatology  
linear regression over time spans of 31 years.  ...  Changes in springtime temperature in Kyoto, Japan, since the 9th century were reconstructed, using the phenological data series for cherry tree (Prunus jamasakura), deduced from old diaries and chronicles  ...  Kodera of the Meteorological Research Institute, Tsukuba, Japan, for information on previous climatic proxies and for comments on the relationship between solar variation and climate change.  ... 
doi:10.1002/joc.1594 fatcat:3nzto246krdelo2u7hoo4e2qvu

Relationships between urban tree communities and the biomes in which they reside

Benjamin S. Ramage, Lara A. Roman, Jeffrey S. Dukes, Aaron Moody
2012 Applied Vegetation Science  
O'Hara for providing valuable feedback on the manuscript, as well as all telephone survey participants for their time and willingness to participate in this study.  ...  We are also grateful for the thoughtful comments of three anonymous reviewers; their input greatly improved the quality of this paper.  ...  Our specific objectives were to: (1) determine whether urban tree communities are influenced by the biomes in which cities are located, after controlling for minimum temperature; (2) determine if patterns  ... 
doi:10.1111/j.1654-109x.2012.01205.x fatcat:mh3nvwtmdfbhhc2c3qzqvxk6s4

Voronoi distance based prospective space-time scans for point data sets: a dengue fever cluster analysis in a southeast Brazilian town

Luiz H Duczmal, Gladston JP Moreira, Denise Burgarelli, Ricardo HC Takahashi, Flávia CO Magalhães, Emerson C Bodevan
2011 International Journal of Health Geographics  
Recently, the concept of Minimum Spanning Tree (MST) was applied to specify the set of potential clusters, through the Density-Equalizing Euclidean MST (DEEMST) method, for the detection of arbitrarily  ...  An application for dengue fever in a small Brazilian city is presented.  ...  Acknowledgements We thank the editor and the three reviewers for their valuable suggestions.  ... 
doi:10.1186/1476-072x-10-29 pmid:21513556 pmcid:PMC3118312 fatcat:3zuq55tln5awzfyiyrqgs5r3sy

A dominance tree approach to systems of cities [article]

Thomas Louail, Marc Barthelemy
2022 arXiv   pre-print
We propose a non-parametric method that goes beyond standard tools of point pattern analysis and which is based on a mapping between the points and a "dominance tree", constructed from a recursive analysis  ...  Characterizing the spatial organization of urban systems is a challenge which points to the more general problem of describing marked point processes in spatial statistics.  ...  / 2414405 for the French data.  ... 
arXiv:2202.13906v2 fatcat:jthijbfmvvgntbl4a6tbj54x5u

Temperature Variability Differs in Urban Agroecosystems across Two Metropolitan Regions

Monika Egerer, Brenda Lin, Dave Kendal
2019 Climate  
Thus, gardens can serve as sites where people build their knowledge of local weather patterns and adaptive capacity to climate change and urban heat.  ...  Climate-focused studies in urban landscapes should consider how habitat-scale temperature variability is a background for interesting and meaningful social-ecological interactions.  ...  We received an exception from the Institutional Review Board for human subject research through the University of California Santa Cruz (UCSC IRB Protocol #3025; DHHS Office for Human Research Protections  ... 
doi:10.3390/cli7040050 fatcat:mwtepef46ran5nxnxzfvr26rra

Patterns of Linguistic Diffusion in Space and Time: The Case of Mazatec [article]

Jean Leo Leonard, Els Heinsalu, Marco Patriarca, Kiran Sharma and Anirban Chakraborti
2016 arXiv   pre-print
between the Mazatec dialects, an endangered Otomanguean language spoken in south-east Mexico.  ...  The results are interpreted in the light of linguistics as well as statistical considerations and used to infer the history of the development of the observed pattern of diversity.  ...  forest of growing minimum spanning trees. • Prim -This algorithm extends the minimum spanning tree by one edge at every discrete time interval by adding a minimal edge which links a node in the growing  ... 
arXiv:1612.02994v1 fatcat:uzrnyobifrczjo3ddc6dwgbjqq

Sustainable urban greening strategies for compact cities in developing and developed economies

C. Y. Jim
2012 Urban Ecosystems  
Outstanding trees could receive high-order conservation efforts, and trees in construction sites warrant enhanced protection. Tree transplanting demands an overhaul in concepts and skills.  ...  Innovative public policies and greening technologies are needed for sustained improvements.  ...  At the urban edge where developments interface with natural areas, tongues or wedges of peri-urban natural areas could extend into built-up areas in an interfingering pattern (Frey 2000; Caspersen and  ... 
doi:10.1007/s11252-012-0268-x fatcat:yhvito44yvdzriej74nthb67jq

Variations in Atmospheric CO2 Mixing Ratios across a Boston, MA Urban to Rural Gradient

Brittain Briber, Lucy Hutyra, Allison Dunn, Steve Raciti, J. Munger
2013 Land  
In this study, we characterize observed atmospheric CO 2 mixing ratios and estimated CO 2 fluxes at three sites across an urban-to-rural gradient in Boston, MA, USA.  ...  Published Version Abstract: Urban areas are directly or indirectly responsible for the majority of anthropogenic CO 2 emissions.  ...  We thank Eli Melaas for his assistance in extracting the Landsat-based phenological dates.  ... 
doi:10.3390/land2030304 fatcat:jzeriefs5rhkvoanouwmejhw44

Scale-dependent interactions between tree canopy cover and impervious surfaces reduce daytime urban heat during summer

Carly D. Ziter, Eric J. Pedersen, Christopher J. Kucharik, Monica G. Turner
2019 Proceedings of the National Academy of Sciences of the United States of America  
Results suggest strategies for managing urban land-cover patterns to enhance resilience of cities to climate warming.  ...  A bicycle-mounted measurement system was used to sample air temperature every 5 m along 10 transects (∼7 km length, sampled 3–12 times each) spanning a range of impervious and tree canopy cover (0–100%  ...  Schatz for helpful comments on the development of these ideas.  ... 
doi:10.1073/pnas.1817561116 pmid:30910972 pmcid:PMC6462107 fatcat:rqesk4mobvfsnpzh2azwikdot4

Profiling microbial strains in urban environments using metagenomic sequencing data

Moreno Zolfo, Francesco Asnicar, Paolo Manghi, Edoardo Pasolli, Adrian Tett, Nicola Segata
2018 Biology Direct  
The microbial communities populating human and natural environments have been extensively characterized with shotgun metagenomics, which provides an in-depth representation of the microbial diversity within  ...  It is thus currently unclear whether such methods, that have proven successful at distinguishing even closely related strains in human microbiomes, are also effective in urban settings for tasks such as  ...  The computational methods used are referenced in the manuscript.  ... 
doi:10.1186/s13062-018-0211-z pmid:29743119 pmcid:PMC5944035 fatcat:qrxp5qa4zfhydpz4bqoaxtzwfu
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