Results 1 to 10 of about 1,846,894 (263)

Physical bases for determination of scattering kernels from incomplete data in grid-less X-ray imaging [PDF]

open access: yesЯдерна фізика та енергетика, 2021
A mathematical model for the determination of X-ray scattering kernels’ shapes based on incomplete simulation or measurement data was introduced and tested using a mathematical phantom.
A. Yu. Danyk, O. O. Sudakov
doaj   +1 more source

Comparative research on thunderstorms identification based on three clustering methods

open access: yes暴雨灾害, 2023
In order to evaluate the recognition effect of different clustering algorithms on thunderstorm system, further improve the ability of lightning nowcasting, in this study, with the ground-based lightning location data and radar reflectivity data, three ...
Zheng SHI   +4 more
doaj   +1 more source

Recovery of Forest Vegetation in a Burnt Area in the Republic of Korea: A Perspective Based on Sentinel-2 Data

open access: yesApplied Sciences, 2021
Forest fires are severe disasters that cause significant damage in the Republic of Korea and the entire world, and an effort is being made to prevent forest fires internationally.
Yunhee Kim   +4 more
doaj   +1 more source

Survival cluster analysis [PDF]

open access: yesProceedings of the ACM Conference on Health, Inference, and Learning, 2020
Conventional survival analysis approaches estimate risk scores or individualized time-to-event distributions conditioned on covariates. In practice, there is often great population-level phenotypic heterogeneity, resulting from (unknown) subpopulations with diverse risk profiles or survival distributions. As a result, there is an unmet need in survival
Chapfuwa, Paidamoyo   +4 more
openaire   +2 more sources

Data Mining-Based Collision Scenarios of Vehicles and Two Wheelers for the Safety Assessment of Intelligent Driving Functions

open access: yesWorld Electric Vehicle Journal, 2023
The safety performance test of intelligent driving vehicles needs to rely on the collision scenarios in a real road traffic environment. In order to study the collision scenarios and accident characteristics of vehicles and two wheelers (TWs) in line ...
Rong Wang   +3 more
doaj   +1 more source

Representing and Inferring Massive Network Traffic Condition: A Case Study in Nashville, Tennessee

open access: yesAlgorithms, 2023
Intelligent transportation systems (ITSs) usually require monitoring of massive road networks and gathering traffic data at a high spatial and temporal resolution.
Hairuilong Zhang   +2 more
doaj   +1 more source

Cluster Correspondence Analysis [PDF]

open access: yesPsychometrika, 2017
A method is proposed that combines dimension reduction and cluster analysis for categorical data by simultaneously assigning individuals to clusters and optimal scaling values to categories in such a way that a single between variance maximization objective is achieved.
van de Velden, M.   +2 more
openaire   +5 more sources

The Number and Distinct Clustering Patterns of Voltage-Gated Calcium Channels in Nerve Terminals

open access: yesFrontiers in Neuroanatomy, 2022
Upon the arrival of action potentials at nerve terminals, neurotransmitters are released from synaptic vesicles (SVs) by exocytosis. CaV2.1, 2.2, and 2.3 are the major subunits of the voltage-gated calcium channel (VGCC) responsible for increasing ...
Kohgaku Eguchi   +3 more
doaj   +1 more source

Abnormal Dynamic Functional Networks in Subjective Cognitive Decline and Alzheimer's Disease

open access: yesFrontiers in Computational Neuroscience, 2022
Subjective cognitive decline (SCD) is considered to be the preclinical stage of Alzheimer's disease (AD) and has the potential for the early diagnosis and intervention of AD.
Jue Wang   +9 more
doaj   +1 more source

Variability of the Red River Plume in the Gulf of Tonkin as Revealed by Numerical Modeling and Clustering Analysis

open access: yesFrontiers in Marine Science, 2021
We study the daily to interannual variability of the Red River plume in the Gulf of Tonkin from numerical simulations at high resolution over 6 years (2011–2016). Compared with observational data, the model results show good performance.
Tung Nguyen-Duy   +13 more
doaj   +1 more source

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