Results 261 to 270 of about 399,398 (280)
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2011
A severe thunderstorm morphs into a tornado that cuts a swath of destruction through Oklahoma. How do we study the storm’s mutation into a deadly twister? Avian flu cases are reported in China. How do we characterize the spread of the flu, potentially preventing an epidemic? The way to answer important questions like these is to analyze the spatial and
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A severe thunderstorm morphs into a tornado that cuts a swath of destruction through Oklahoma. How do we study the storm’s mutation into a deadly twister? Avian flu cases are reported in China. How do we characterize the spread of the flu, potentially preventing an epidemic? The way to answer important questions like these is to analyze the spatial and
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Spatiotemporal Analysis of Regional Systems
International Regional Science Review, 2016This article contributes to the recent literature in spatial econometrics that focuses on space–time data modeling implementing a multilocation time-series statistical framework to analyze a regional system. Drawing on the global vector autoregression approach introduced in Pesaran, Schuermann, and Weiner, a multiregional spatial vector autoregressive
Julián Ramajo +2 more
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Spatiotemporal Network Analysis and Visualization
International Journal of Applied Geospatial Research, 2015Spatiotemporal social network analysis shows relationships among people at a particular time and location. This paper presents an algorithm that mines text for person and location words and creates connections among words. It shows how this algorithm output, when chunked by time intervals, may be visualized by third-party social network analysis ...
Judith Gelernter, Kathleen M. Carley
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Lyapunov Analysis of Spatiotemporal Intermittency
Europhysics Letters (EPL), 1993Lyapunov exponents and vectors are investigated for a chain of locally coupled maps known to exhibit a continuous transition to spatio-temporal intermittency regimes. The accompanying critical behaviour (e.g., the divergence of the coherence scales) is not reflected in the behaviour of the largest Lyapunov exponent, which remains constant, but rather ...
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Analysis of Menger’s ‘spatiotemporal hypothesis’
Tetrahedron Letters, 2008Abstract Ab initio at HF/6-31G and HF/6-31G(d,p) levels, AM1 and molecular mechanics calculations of thermodynamic and kinetic parameters for Menger’s system 1 – 3 (an important enzyme model) indicate that the remarkable enhancement in the proton transfer process is largely the result of a strain effect, and this strain is a function of the bond ...
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Master stability analysis in transient spatiotemporal chaos
Physical Review E, 2007The asymptotic stability of spatiotemporal chaos is difficult to determine, since transient spatiotemporal chaos may be extremely long lived. A master stability analysis reveals that the asymptotic state of transient spatiotemporal chaos in the Gray-Scott system and in the Bär-Eiswirth system is characterized by negative transverse Lyapunov exponents ...
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Regional Air Pollution Spatiotemporal Analysis with Spatiotemporal Graph Clustering
2023 9th International Conference on Big Data and Information Analytics (BigDIA), 2023Lihong Pei +5 more
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