Jian-Ting Zhang

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In the present study, we investigated the spatiotemporal properties of locomotor activity after administration of CNS sedatives (pentobarbital and diazepam) and stimulants (theophylline and caffeine) in an open field test. The absolute and relative distances traveled in central or peripheral regions within 2 h were analyzed. We found that both pentobarbital(More)
Normalized difference vegetation index (NDVI) Beta diversity Bray–Cutis dissimilarity index Taxonomic rank Ecoregion Phenology Mantel test a b s t r a c t Finding an effective method to quantify species compositional changes in time and space has been an important task for ecologists and biogeographers. Recently, exploring regional floristic patterns using(More)
Volumes of GPS recorded trajectory data in ubiquitous urban sensing applications are increasing fast. Many trajectory queries are both I/O and computing intensive. In this study, we propose to develop the U 2 STRA prototype system to efficiently manage large-scale GPS trajectory data using General Purpose computing on Graphics Processing Units (GPGPU)(More)
Spatially joining GPS recorded locations with infrastructure data, such as points of interests, road network, land cover and different types of zones, and assigning a point with its nearest polyline or polygon is a prerequisite for trip related analysis, which is becoming increasingly important in ubiquitous computing. However, existing spatial databases(More)
—Species distribution data are becoming increasingly available over the past few years and the availability is likely to increase significantly in the near future due to technological advances. While traditionally GIS are used to visualize the distributions of a limited number of species and to generate biodiversity indices in predefined regions in an(More)
Many proteins exist and function as oligomers. While hydrophobic interactions have been recognized as the major driving force for oligomerization, detailed molecular mechanisms for the assembly are unknown. Here, we used 14-3-3σ as a model protein and investigated the role of hydrophobic residues at the dimeric interface using MD simulations and(More)
Global remote sensing and large-scale environmental modeling have generated huge amounts of raster geospatial data. While the inherent data parallelism of large-scale raster geospatial data allows straightforward coarse-grained parallelization at the chunk level on CPUs, it is largely unclear how to effectively exploit such data parallelism on massively(More)
Analyzing how species are distributed on the Earth has been one of the fundamental questions in the intersections of environmental sciences, geosciences and biological sciences. With worldwide data contributions, more than 375 million species occurrence records for nearly 1.5 million species have been deposited to the Global Biodiversity Information(More)