Results 141 to 150 of about 5,483,277 (408)

An Entropy Maximizing Geohash for Distributed Spatiotemporal Database Indexing [PDF]

open access: yesarXiv, 2015
We present a modification of the standard geohash algorithm based on maximum entropy encoding in which the data volume is approximately constant for a given hash prefix length. Distributed spatiotemporal databases, which typically require interleaving spatial and temporal elements into a single key, reap large benefits from a balanced geohash by ...
arxiv  

Comparative single‐cell transcriptomic profiling of patient‐derived renal carcinoma cells in cellular and animal models of kidney cancer

open access: yesFEBS Open Bio, EarlyView.
We generated and characterized clear cell renal cell carcinoma models using the patient‐derived RCC243 cell line—including cell culture, orthotopic, and metastatic tumors—via single‐cell RNA‐sequencing for comparisons between models and patient tumor datasets.
Richard Huang   +9 more
wiley   +1 more source

Detection of Premature Ventricular Contractions Using Densely Connected Deep Convolutional Neural Network with Spatial Pyramid Pooling Layer [PDF]

open access: yesarXiv, 2018
Premature ventricular contraction(PVC) is a type of premature ectopic beat originating from the ventricles. Automatic method for accurate and robust detection of PVC is highly clinically desired.Currently, most of these methods are developed and tested using the same database divided into training and testing set and their generalization performance ...
arxiv  

An Updating System for the Gridded Population Database of China Based on Remote Sensing, GIS and Spatial Database Technologies

open access: yesItalian National Conference on Sensors, 2009
The spatial distribution of population is closely related to land use and land cover (LULC) patterns on both regional and global scales. Population can be redistributed onto geo-referenced square grids according to this relation.
Xiaohuan Yang   +4 more
semanticscholar   +1 more source

Current Research: Toward a Collaborative Development of a Truly Comprehensive Multi-State Material Culture Database [PDF]

open access: yes, 2018
Throughout the past several years, I have been compiling, with the help of several Caddo researchers, a comprehensive multi-state database primarily composed of whole Caddo vessels from published excavations, private collections, and archaeological ...
McKinnon, Duncan P.
core   +1 more source

A review of artificial intelligence in brachytherapy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Artificial intelligence (AI) has the potential to revolutionize brachytherapy's clinical workflow. This review comprehensively examines the application of AI, focusing on machine learning and deep learning, in various aspects of brachytherapy.
Jingchu Chen   +4 more
wiley   +1 more source

Ranking of Illegal Buildings Close to Rivers: A Proposal, Its Implementation and Preliminary Validation

open access: yesISPRS International Journal of Geo-Information, 2019
Illegal buildings (IBs) are a dramatic problem in developing countries due to the population explosion, but, at the same time, they represent an unsolved issue in several states usually called advanced (as, for instance, Italy).
Paolino Di Felice
doaj   +1 more source

Stereotactic radiosurgery for multiple small brain metastases using gamma knife versus single‐isocenter VMAT: Normal brain dose based on lesion number and size

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The study evaluates rapid linear accelerator (Linac) single isocenter stereotactic radiosurgery (SRS) with Hyperarc for large target numbers. We compared to Gamma Knife (GK), which suffers from long treatment times and investigated causes of differences. Methods Linac SRS and GK treatment plans for patients receiving 18 Gy to the gross
Abram Abdou   +4 more
wiley   +1 more source

The Integrated Management of Information about the Geodetic Point Fields—A Case of the Czech Republic

open access: yesGeosciences, 2019
The geodetic point fields play a crucial role in measuring a terrain, in surveying, and mapping applications. Due to the rapid development in the domain of information technologies, it makes sense to consider using the database and web technologies to ...
Karel Janečka
doaj   +1 more source

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