Showing papers in "Computers & Geosciences in 2007"

TL;DR: This paper discusses the characteristics of regression-kriging (RK), its strengths and limitations, and illustrates these with a simple example and three case studies, and addresses pragmatic issues: implementation of RK in existing software packages, comparison ofRK with alternative interpolation techniques, and practical limitations to using RK.

TL;DR: Remote sensing and Geographic Information Science techniques developed within the framework of GLIMS are addressed in order to fulfill the goals of this distributed project.

TL;DR: This work shows how ontology-based geospatial semantics are used in a prototype system for enabling the automatic discovery, access, and chaining ofGeospatial Web services by employing geosp spatial semantics in the service-oriented architecture (SOA).

TL;DR: This work presents algorithms for analytically calculating the displacements, strains, and stresses associated with slip on a triangular dislocation element (TDE) in a homogeneous elastic half space and gives explicit formulas for the strains due to slip on an angular dislocation.

TL;DR: The effects of strength criteria and residual strength on the performance of this damage-softening statistical constitutive model of rock are studied to lay a good foundation for further application of this model in geotechnics and geosciences.

TL;DR: A GIS extension, RockFall Analyst (RA), which is capable of effectively handling large amounts of geospatial information relative to rockfall behaviors, has been developed in ArcGIS using ArcObjects and C#.

TL;DR: SELEN as mentioned in this paper is a Fortran 90 computer program for solving the "sea-level equation" that governs the sea-level variations associated with the melting of the Pleistocene ice sheets.

TL;DR: Artificial neural networks clearly outperformed all other classifiers and are effective tools for this particular classification problem in the Panoma gas field.

TL;DR: SRTM 03'' proved to be a good resource for geomorphological analysis, up to the semi-detail scale, and showed the correlation of landscape within the massif with NE-SW and NW-SE structures, as well as landforms related with recent tectonic influence.

TL;DR: A new, precise and adaptive method for the implicit reconstruction of faulted surfaces with complex geometry from scattered, unorganized points as obtained from seismic data or laser scanners is introduced.

TL;DR: The interpretation of the spatial distribution of clusters assisted by the interpretation of cluster centroids, allows for the identification of the building class, as well as building sub-classes with different geomorphometric characteristics.

TL;DR: Mirone is a Windows MATLAB-based framework tool developed by the author that allows the display and manipulation of a large number of grid formats through its interface with the Geospatial Data Abstraction Library (GDAL).

TL;DR: A novel general component substitution (GCOS) image fusion framework is proposed, which could be used in three aspects: comparative analysis to existing algorithms, providing a fast technique for current COS fusion methods, and guiding the development of the new COS algorithm.

TL;DR: On the basis of the error estimates two methods: R/S analysis and WT are suggested for calculation of H for short/long datasets and WT method is applied to geophysical data of the Bay of Bengal.

TL;DR: A user-friendly system called coastal modeling system (SMC), developed by the Spanish Ministry of Environment and the University of Cantabria, has a dynamic design and allows the incorporation of future new databases and morphodynamic models.

TL;DR: Data Uncertainty Engine (DUE) provides a conceptual framework for structuring an uncertainty analysis, allowing users without direct experience of uncertainty methods to develop realistic uncertainty models for their data.

TL;DR: Examples are presented which use the Venice lagoon as a benchmark shallow tidal basin characterized by a complex interplay of channels and marshes to better illustrate problems still remaining in this branch of computational fluid dynamics.

TL;DR: The predicted spatial pattern of surface runoff was strongly affected by the presence of interpolation artefacts in the DEM, with completely unrealistic predictions in the case of the worst quality DEMs.

TL;DR: The result shows that 97% of currently productive geothermal wells in Akita and Iwate prefectures are located within the first priority zone selected by the GM-GRE, consisting of geoprocessing tools and a modelbuilder.

TL;DR: The plurigaussian model is discussed, an application to a Chilean porphyry copper deposit is presented, and a set of computer programs are provided to perform its inference and conditional simulation.

TL;DR: The new linear pixel-swapping method led to an increase in the accuracy of mapping fine linear features of approximately 5% compared with the conventional pixel- Swapping method.

TL;DR: This paper takes an important health metric in Kenya (the proportion of outpatient treatments for malaria (MP) from the national HMIS database and predicts the values of MP at facilities where monthly records are missing, using three different kriging methodologies to make cross-validation predictions of MP.

TL;DR: This work proposed the variance quadtree algorithm for sampling in an area with prior information represented as ancillary or secondary environmental data, and the covariance structure of the anCillary variable is non-stationary.

TL;DR: In this article, physically representative network models created from computer-generated sphere packings are coupled to adjacent continuum-scale models, which reflect the heterogeneity of the packed bed as well as the resistance of the adjacent medium.

TL;DR: A universal algorithm for polygon clipping, which is a frequent operation in GIS, based on so-called entry/exit intersection point property, which has to be explicitly determined only at the first calculated intersection point is introduced.

TL;DR: The research focus of this study presents a development of computational fuzzy topology, which is based on the interior operator and closure operator, and is applicable for computing the values of fuzzy topological relations, such as defined conceptually by the 9-intersection model.

TL;DR: A novel drainage delineation algorithm specially designed for mapping the valley networks from digital elevation data is presented, which argues that delineated networks are indeed of better quality than the networks manually mapped from images.

TL;DR: The objective of this paper was to investigate the utility of non-stationary geostatistics for optimal sampling design, and it was demonstrated that the global design was inadequate, grossly over-sampled some segments while under-sampling others.

TL;DR: bh_tomo as mentioned in this paper is an open source 2D tomography software package developed at the Ecole Polytechnique of Montreal (EPoM) in Quebec, Canada.

TL;DR: Results of employing a fuzzy c-means classification for a sample DEM from Snowdonia, Wales, with a number of morphometric measures at different resolutions as input, and morphometric classification of landforms at each resolution as output reveal that different landscape components or morphometric classes are important at differentResolution dependency in their geographical extents is revealed.