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Driver based statistical model for simulating land use/land cover change in Indus river basin, India

Yajnaseni Palchowdhuri, Parth Sarathi Roy
2018 Remote Sensing of Land  
A statistical driver-based model was used to simulate the land use scenarios for 2015 and 2025. The model output was validated by comparing the simulated maps with reference ones for 2005 and 2015.  ...  Remote sensing sources from Landsat (MSS), LISS-I and LISS-III (1985-2005), were used to assess the past land use at a scale of 1:250,000.  ...  The authors are thankful to Director, IIRS for all necessary support.  ... 
doi:10.21523/gcj1.18020102 fatcat:yufzhch6fzfbfndht5sbwjlr5i

Species Richness and Taxonomic Distinctness of Zooplankton in Ponds and Small Lakes from Albania and North Macedonia: The Role of Bioclimatic Factors

Giorgio Mancinelli, Sotir Mali, Genuario Belmonte
2019 Water  
Noticeably, waterbodies' area showed a generally low prediction power for both S and Δ+.  ...  Here, we assessed the species richness S and taxonomic distinctness Δ+ (used a proxy of phylogenetic diversity) of crustacean zooplankton assemblages from 40 ponds and small lakes located in Albania and  ...  To this end, multivariate approaches that are based on a canonical analysis of principal coordinates were used to model the changes in the structure of the assemblages as affected by bioclimatic variables  ... 
doi:10.3390/w11112384 fatcat:lwvt3nnvxza2leqmdwn7gloe5u

OPTIMAL PLACEMENT OF BASE STATION FOR CELLULAR NETWORK EXPANSION

2016 Issues in Information Systems  
For an optimized cellular network, the location of a base station is paramount importance which should be considered by geographic as well as topographic features.  ...  A cellular network optimization is extremely important to provide consumers with satisfactory signal strength and high coverage.  ...  The towers are placed in such a way that multiple cells form a tight knit mesh (Harris, 2011) .  ... 
doi:10.48009/2_iis_2016_215-221 fatcat:3olnk5pxwfaw3msr632twwj6fi

Retrieval of Land-Use/Land Cover Change (LUCC) Maps and Urban Expansion Dynamics of Hyderabad, Pakistan via Landsat Datasets and Support Vector Machine Framework

Shaker Ul Din, Hugo Wai Leung Mak
2021 Remote Sensing  
In particular, radiometric and atmospheric corrections were applied to these raw images, then the Gaussian-based Radial Basis Function (RBF) kernel was used for training, within the 10-fold support vector  ...  of the proposed satellite-based retrieval mechanism.  ...  This study has opened a new window of detecting LUCC changes in developing cities via remotely sensed and pixel-based classification approaches, and can provide insights for conducting impact assessments  ... 
doi:10.3390/rs13163337 fatcat:mtqjm24vcfcsdpnzsp2glethha

COMPARATIVE ACCURACY EVALUATION OF FINE-SCALE GLOBAL AND LOCAL DIGITAL SURFACE MODELS: THE TSHWANE CASE STUDY I

A. Breytenbach
2016 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Although all three DSMs displayed significantly more vertical errors where solid waterbodies, dense natural and/or alien woody vegetation and, in a lesser degree, urban residential areas with significant  ...  VHR digital mapping camera stereo-pairs, tri-stereo imagery collected by a Pléiades satellite and data detected from the Tandem-X InSAR satellite configuration were fundamental in the construction of seamless  ...  free use of their expansive archived aerial photography resources; Airbus Defence and Space for supplying the WorldDEM™ sample for this assessment permissible under a Technical Evaluation License Agreement  ... 
doi:10.5194/isprs-annals-iv-2-w1-211-2016 fatcat:4g7dcvghsfbv5cibpwipeheqeu

Semi-automatic conversion from OSG to CityGML [article]

Pranjal Swarup
2021 arXiv   pre-print
There are several ways to generate 3D models for applications such as gaming, media content for movies and TV, and 3D printing among others.  ...  Topological aspects are considered for the mesh segmentation to allow users to easily select and map semantic information to the geometric model.  ...  regenerate a graph representation of the mesh while creating links between faces which do not share a vertex but their vertices are close enough as discussed in GRAPH GENERATION FOR PRE-PROCESSING AND  ... 
arXiv:2109.14643v1 fatcat:3445k6rnwbdf3b3amiyeqfxij4

The Role of Sewer Network Structure on the Occurrence and Magnitude of Combined Sewer Overflows (CSOs)

Julian D. Reyes-Silva, Emmanuel Bangura, Björn Helm, Jakob Benisch, Peter Krebs
2020 Water  
Furthermore, the present approach of reducing CSO frequency may provide a new gray solution that can be integrated in the development of hybrid mitigation strategies for the CSO management.  ...  Results indicate that more meshed structures are associated to a decrease on the occurrence and magnitude of CSO.  ...  Results indicate a general reduction on the NCSO, AMV and AML with increasing meshness, for almost all the analyzed catchments.  ... 
doi:10.3390/w12102675 fatcat:af72v4f2z5guhctpyqgtgknrgu

LiDAR DEM Smoothing and the Preservation of Drainage Features

John B. Lindsay, Anthony Francioni, Jaclyn M. H. Cockburn
2019 Remote Sensing  
for de-noising three-dimensional (3D) meshes.  ...  The FPDEMS method has been optimized for application with raster DEM data.  ...  DEMs, following the approach that is commonly used for 3D mesh model smoothing.  ... 
doi:10.3390/rs11161926 fatcat:r2jtxj7s35fdnkpmt737qwklam

Bathymetry Development and Flow Analyses Using Two-Dimensional Numerical Modeling Approach for Lake Victoria

Seema Paul, Jesper Oppelstrup, Roger Thunvik, John Mango Magero, David Ddumba Walakira, Vladimir Cvetkovic
2019 Fluids  
Old depth soundings taken in smaller parts of the lake were combined with more recent extensive data to produce a smooth topographical model.  ...  Thanks also to Tabu Munyalo, NaFIRRI, Jinja, and Uganda for providing us with bathymetry data for the entire lake.  ...  We wish to acknowledge LVBC for their useful cooperation.  ... 
doi:10.3390/fluids4040182 fatcat:3wirpwbwlberfkkwrzlg5t3weq

Impact of modelling scale on probabilistic flood risk assessment: the Malawi case

Roberto Rudari, Joost Beckers, Silvia De Angeli, Lauro Rossi, Eva Trasforini, M. Lang, F. Klijn, P. Samuels
2016 E3S Web of Conferences  
Flood hazard maps obtained with both approaches are combined with flood impact models at the same resolution to generate indicators for flood risk.  ...  The second method applies a full 2D hydraulic model to propagate water discharge into the flood plains and best suites for small areas where assets are concentrated.  ...  D-Flow FM uses a flexible mesh and a variable grid resolution.  ... 
doi:10.1051/e3sconf/20160704015 fatcat:lxbhzh2wvjgp5fdbee5cncbxxm

Utilizing Geospatial Tools to Assign Unique Identifiers to Water Bodies in a Low-Income Country

Abubakarr S. Mansaray, Abdulai Barrie, Eva B. M. Jabati, Mohamed S. E. Juanah, Kyran J. Ganda
2021 Journal of Water Resource and Protection  
Each stream segment was given a UID based on its region and Strahler's stream order system.  ...  These will lay the foundation for a nationwide coding exercise and provide a useful reference for water resource practitioners.  ...  Acknowledgements The physical and chemical water quality data were provided by the National A. S. Mansaray et al.  ... 
doi:10.4236/jwarp.2021.133014 fatcat:pi2rxypyfngt5eyy4xwqhdatgy

Generalisation in Practice Within National Mapping Agencies [chapter]

Cécile Duchêne, Blanca Baella, Cynthia A. Brewer, Dirk Burghardt, Barbara P. Buttenfield, Julien Gaffuri, Dominik Käuferle, François Lecordix, Emmanuel Maugeais, Ron Nijhuis, Maria Pla, Marc Post (+7 others)
2014 Lecture Notes in Geoinformation and Cartography  
The chapter finishes with a synthesis of recent achievements, as well as future challenges that NMAs have begun to tackle.  ...  A contribution by the European Joint Research Center reports on the use of multiple representation and generalisation in the context of the implementation of the European INSPIRE directive.  ...  the rich exchanges they enabled regarding current practices of generalisation and future challenges for NMAs.  ... 
doi:10.1007/978-3-319-00203-3_11 fatcat:3yw2mb5thzelzih64dbfnoojse

Proposed approaches to systematic planning of research and monitoring to support a South African inland fisheries policy

S Hugo, OLF Weyl
2021 Water S.A  
Such covariates are required for a model-based process to select a subset of state-owned dams for a long-term fishery survey programme.  ...  Approaches to systematic planning of research and monitoring are demonstrated herein, based on a fishery-independent gillnet dataset covering 44 dams, and geographic information system maps of monthly  ...  McCafferty (2012) modelled CPUE of 26 dams across South Africa based on a gillnet fleet with a matching range of mesh sizes (see also Weyl et al., 2007; Winker, 2010) .  ... 
doi:10.17159/wsa/2021.v47.i3.11865 fatcat:jkjvc5p6jnfthc664njbjgc3ni

Development of a new emission reallocation method for industrial sources in China

Yun Fat Lam, Chi Chiu Cheung, Xuguo Zhang, Joshua S. Fu, Jimmy Chi Hung Fung
2021 Atmospheric Chemistry and Physics  
In this study, a new reallocation method based on blue-roof industrial buildings was developed to replace the conventional method of using population density for the Chinese emission development.  ...  An accurate emission inventory is a crucial part of air pollution management and is essential for air quality modelling.  ...  The authors would like to acknowledge Willy Ying, Sairy Wang, and Stephen Chan for their supports in the research and the Hong Kong Environmental Protection Department for providing emission inputs.  ... 
doi:10.5194/acp-21-12895-2021 fatcat:lgvh4vzd4jap7hwfkfayxcocjm

Distribution of Charophyte Oospores in the Curonian Lagoon and their Relationship to Environmental Forcing

Vaiva Stragauskaitė, Martynas Bučas, Georg Martin
2021 Water  
Viable fructifications showed a clear pattern of filling the oospore bank after the vegetation season and a depletion during the summer as they germinated.  ...  Tiškus for assistance in sediment collection, and J. Mėžinė for providing hydrometeorological data for analysis. Valuable comments of the two anonymous reviewers improved the manuscript.  ...  The indirect approach was based on a comparison of means of each environmental factor among several groups of the study sites, i.e., the sites with and without charophyte fructifications and delineated  ... 
doi:10.3390/w13020117 fatcat:icrdiqwznbe27erf4sddukgaiq
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