Results 41 to 50 of about 1,724,437 (198)
An Algorithm for Data Reorganization in a Multi-dimensional Index [PDF]
, 2012 In spatial databases, data are associated with spatial coordinates and are retrieved based on spatial proximity. A spatial database uses spatial indexes to optimize spatial queries.
Nair, Urvashi Samaresh
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TIP spatial index: efficient access to digital libraries in a context-aware mobile system [PDF]
, 2012 We present a framework for efficient, uniform, location-based access to digital library collections that are external to a context-aware mobile information system.
Hinze, Annika, Osborn, Wendy
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Topological Properties of Spatial Coherence Function
, 2007 Topology of the spatial coherence function is considered in details. The phase singularity (coherence vortices) structures of coherence function are classified by Hopf index and Brouwer degree in topology.
Dennis M R +9 more
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A Morse index theorem for elliptic operators on bounded domains [PDF]
, 2015 Given a selfadjoint, elliptic operator $L$, one would like to know how the spectrum changes as the spatial domain $\Omega \subset \mathbb{R}^d$ is deformed.
Cox, Graham +2 more
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Probabilistic spatial power indexes [PDF]
Social Choice and Welfare, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Benati, Stefano, G. Vittucci Marzetti
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Land, 2022 The economic and social orientation of cultivated land in underdeveloped mountainous areas is obvious. A study of the spatial agglomeration characteristics of cultivated land quality can provide guidance for regional economic and social development ...
Guanglian Luo +4 more
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Quantitative analysis of the spatial diversity of Moraceae in China
Frontiers in Ecology and Evolution, 2023 Changes in distribution patterns of economically essential forest species under global change are urgently needed in the scientific forecast, and large-scale spatial modeling is a crucial tool.
Dangui Lu +5 more
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Method for Assessing the Fidelity of Optical Diffraction Tomography Reconstruction Methods
, 2019 We use a spatial light modulator in a diffraction tomographic system to assess the accuracy of different refractive index reconstruction algorithms. Optical phase conjugation principles through complex media, allows us to quantify the error for different
Ayoub, Ahmed B. +4 more
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QUANTIFYING EFFECTS OF CHANGING SPATIAL SCALE ON SPATIAL ENTROPY INDEX: USE OF FRACTAL DIMENSION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Quantifying landscape heterogeneity and its organization at different scales is essential for understanding ecosystems and landscapes. Among hundreds of landscape metrics, entropy-related index represents an efficient tool to quantify and characterize ...
C. J. Wang +5 more
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Spatial Relationship between Land Use Patterns and Ecosystem Services Value—Case Study of Nanjing
Land, 2022 The degree of land use reflects the progress of social and economic development; however, it also has a direct impact on land resources. Maximizing the ecosystem services of land resources in a limited space is a key issue in China’s rapid urbanization ...
Ming Lu +3 more
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