Results 11 to 20 of about 266,557 (240)

On the fine vertical structure of the low troposphere over the coastal margins of East Antarctica [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
In this study, 8 years of high-resolution radiosonde data at nine Antarctic stations are analysed to provide the first large-scale characterization of the fine vertical structure of the low troposphere up to 3 km altitude over the coastal ...
É. Vignon, O. Traullé, A. Berne
doaj   +1 more source

Hydrometeor classification from two-dimensional video disdrometer data [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
The first hydrometeor classification technique based on two-dimensional video disdrometer (2DVD) data is presented. The method provides an estimate of the dominant hydrometeor type falling over time intervals of 60 s during precipitation, using ...
J. Grazioli   +5 more
doaj   +1 more source

Formal verification of LTE-UMTS and LTE–LTE handover procedures [PDF]

open access: yesComputer Standards & Interfaces, 2017
Long Term Evolution (LTE) is the most recent standard in mobile communications, introduced by 3rd Generation Partnership Project (3GPP). Most of the works in literature about LTE security analyze authentication procedures, while handover procedures are far less considered.
BETTASSA COPET, PIERGIUSEPPE   +3 more
openaire   +2 more sources

Unraveling hydrometeor mixtures in polarimetric radar measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2018
Radar-based hydrometeor classification typically comes down to determining the dominant type of hydrometeor populating a given radar sampling volume. In this paper we address the subsequent problem of inferring the secondary hydrometeor types present ...
N. Besic   +8 more
doaj   +1 more source

Solid hydrometeor classification and riming degree estimation from pictures collected with a Multi-Angle Snowflake Camera [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
A new method to automatically classify solid hydrometeors based on Multi-Angle Snowflake Camera (MASC) images is presented. For each individual image, the method relies on the calculation of a set of geometric and texture-based descriptors to ...
C. Praz, Y.-A. Roulet, A. Berne
doaj   +1 more source

RainForest: a random forest algorithm for quantitative precipitation estimation over Switzerland [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
Quantitative precipitation estimation (QPE) is a difficult task, particularly in complex topography, and requires the adjustment of empirical relations between radar observables and precipitation quantities, as well as methods to transform observations ...
D. Wolfensberger   +5 more
doaj   +1 more source

Hydrometeor classification from polarimetric radar measurements: a clustering approach [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
A data-driven approach to the classification of hydrometeors from measurements collected with polarimetric weather radars is proposed. In a first step, the optimal number of hydrometeor classes (nopt) that can be reliably identified from a large ...
J. Grazioli, D. Tuia, A. Berne
doaj   +1 more source

Base Station Power Optimization for Green Networks Using Reinforcement Learning

open access: yesSakarya University Journal of Computer and Information Sciences, 2021
The next generation mobile networks have to provide high data rates, extremely low latency, and support high connection density. To meet these requirements, the number of base stations will have to increase and this increase will lead to an energy ...
Hande Alemdar, Semih Aktaş
doaj   +1 more source

Design and implementation of MIMO-long term evolution-advanced to support larger bandwidth [PDF]

open access: yes, 2013
The migration of mobile communication technologies are divided into four generations. Long Term Evolution (LTE) is called LTE rel-8, the evolution of LTE led to new technology referred to as LTE-Advanced, is the true fourth generation (4G) evolution
Alashqer, Aws Zuheer Yonis
core   +1 more source

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