Results 11 to 20 of about 55,984 (113)

Backpack satellite transmitters reduce survival but not nesting propensity or success of greater sage‐grouse

open access: yesEcology and Evolution, 2023
Telemetry technology is ubiquitous for studying the behavior and demography of wildlife, including the use of traditional very high frequency (VHF) radio telemetry and more recent methods that record animal locations using global positioning systems (GPS)
Bryan S. Stevens   +5 more
doaj   +1 more source

Pulse Characteristics of a Direct Antenna Modulation Transmitter

open access: yesIEEE Access, 2019
Direct antenna modulation (DAM) methods using time-varying matching networks offer the possibility to reduce the detrimental effects on broadband signal transmission from a narrowband antenna.
Kurt Schab   +2 more
doaj   +1 more source

Are grassland passerines especially susceptible to negative transmitter impacts?

open access: yesWildlife Society Bulletin, 2011
Assessing the impacts of manipulative research can be hard when few animals are affected in any one study. Collating information across studies, however, can identify vulnerable organisms and allow researchers to tailor research to reduce, and possibly ...
Jason M. Hill, Chris S. Elphick
doaj   +1 more source

Comparative study on earthquake and ground based transmitter induced radiation belt electron precipitation at middle latitudes [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2011
We examined (peak-to-background flux ratio <i>p/b</i> > 20) energetic electron bursts in the presence of VLF activity, as observed from the DEMETER satellite at low altitudes (~700 km). Our statistical analysis of measurements during two 6-
N. F. Sidiropoulos   +2 more
doaj   +1 more source

A metal object detection system for electric vehicle wireless charging with quadrupole detection coils

open access: yesEnergy Reports, 2023
In the practical application of magnetic coupling wireless charging technology, the absence of direct contact between the receiver and transmitter usually leads to metal objects (MOs) entering the charging area.
Yiming Zhang   +4 more
doaj   +1 more source

On the Effects of Code Cardinality for TH-PPM Ultra Wideband Systems

open access: yesJournal of Telecommunications and Information Technology, 2023
This paper demonstrates the effects of code cardinality at transmitter section on bit error rate (BER) performance of time hopping pulse position modulation (TH-PPM) based ultra wideband (UWB) indoor radio communication.
Mohammad Upal Mahfuz   +2 more
doaj   +1 more source

Spinal botulinum neurotoxin B: effects on afferent transmitter release and nociceptive processing. [PDF]

open access: yesPLoS ONE, 2011
Botulinum neurotoxin B (BoNT-B) mediates proteolytic cleavage of VAMP I/II (synaptobrevins I/II), which prevents vesicle-membrane fusion and blocks neurotransmitter release.
Polly P Huang   +4 more
doaj   +1 more source

Effect of Generalized Improper Gaussian Noise and In-Phase/Quadrature-Phase Imbalance on Quadrature Spatial Modulation

open access: yesIEEE Open Journal of Signal Processing, 2021
Quadrature spatial modulation (QSM) isa recently proposed multiple-input multiple-output (MIMO) wireless transmission paradigm that has garnered considerable research interest owing to its relatively high spectral efficiency. QSM essentially enhances the
Malek M. Alsmadi   +3 more
doaj   +1 more source

Time-Efficient Simulation of Free-Space Optical Communication Systems Under Atmospheric Turbulence, Pointing Error, and Angle-of-Arrival Fluctuations

open access: yesIEEE Photonics Journal, 2023
Computer simulation is a powerful and convenient tool for the design and performance evaluation of free-space optical (FSO) communication systems. In this article, we present two simulation frameworks that incorporate not only the effects of atmospheric ...
Mat T. Nguyen, Vuong Mai, Hoon Kim
doaj   +1 more source

An evaluation of transmitter effects on the return rate of adult and juvenile Common Terns to a breeding colony

open access: yesJournal of Field Ornithology
Advancements in technology have facilitated a rapid expansion in the range of species for which tracking studies can be implemented. Such efforts often require unique attachment methods or materials for which careful evaluation is required to fully ...
Jeffery D Sullivan   +8 more
doaj   +1 more source

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