Results 11 to 20 of about 9,368,018 (162)

Optimal Constructions of Low-Hit Zone Frequency-Hopping Sequence Set Based on m-Sequence

open access: yesMathematics
Quasi-Synchronous Frequency hopping (FH) Multiple Access (QS-FHMA) systems feature high communication efficiency, strong flexibility, and low operational costs, and they have been widely used in various FH communication scenarios such as satellite ...
Changyuan Wang   +3 more
doaj   +3 more sources

Constructions of optimal low hit zone frequency hopping sequence sets with large family size

open access: yesAdvances in Mathematics of Communications
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xianhua Niu
exaly   +4 more sources

The percentage occupancy hit or miss transform [PDF]

open access: yes, 2009
The Hit or Miss Transform (HMT) is a well known morphological technique which can be used for shape and object recognition in digital image processing. The standard HMT is a particularly powerful tool for locating objects which are noise free in both the
Bullinger, E., Marshall, S., Murray, P.
core   +5 more sources

Construction of Optimal or Near Optimal Frequency-Hopping Sequence Set with Low Hit Zone

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2016
Limengnan Zhou, Daiyuan Peng
exaly   +3 more sources

Families of Optimal Low-Hit-Zone Frequency-Hopping Sequence Sets Under the Periodic Partial Hamming Correlation Properties

open access: yesIEEE Access, 2020
For the sake of meeting the variable requirements of different quasi-synchronous (QS) frequency-hopping multiple-access (FHMA) communication systems, low-hit-zone (LHZ) frequency-hopping sequence (FHS) sets with flexible parameters and optimal Hamming ...
Limengnan Zhou, Xing Liu
doaj   +1 more source

New Classes of Optimal Low Hit Zone Frequency Hopping Sequences with New Parameters by Interleaving Technique

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2012
Zhengchun Zhou   +2 more
exaly   +3 more sources

Contrasting changes in hydrological processes of the Volta River basin under global warming [PDF]

open access: yesHydrology and Earth System Sciences, 2022
A comprehensive evaluation of the impacts of climate change on water resources of the West Africa Volta River basin is conducted in this study, as the region is expected to be hardest hit by global warming.
M. Dembélé   +14 more
doaj   +1 more source

Metabarcoding of the phytotelmata of Pseudalcantarea grandis (Bromeliaceae) from an arid zone [PDF]

open access: yesPeerJ, 2022
Background Pseudalcantarea grandis (Schltdl.) Pinzón & Barfuss is a tank bromeliad that grows on cliffs in the southernmost portion of the Chihuahuan desert. Phytotelmata are water bodies formed by plants that function as micro-ecosystems where bacteria,
José Alan Herrera-García   +5 more
doaj   +2 more sources

Synoptic environment associated with heavy rainfall events on the coastland of Northeast Brazil [PDF]

open access: yesAdvances in Geosciences, 2013
Northeast Brazil (NEB) has an extensive coastal area, often hit by natural disasters that bring many social and economic losses. The objective of this work was to study the synoptic environment associated with a heavy rainfall event (HRE) on the ...
P. T. Oliveira   +2 more
doaj   +1 more source

Possible Correlations between the ULF Geomagnetic Signature and Mw6.4 Coastal Earthquake, Albania, on 26 November 2019

open access: yesEntropy, 2021
An earthquake of Mw6.4 hit the coastal zone of Albania on 26 November 2019, at 02:54:11 UTC. It was intensively felt at about 34 km away, in Tirana City, where damages and lives lost occurred.
Dragoș Armand Stănică   +1 more
doaj   +1 more source

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