Results 1 to 10 of about 374,167 (276)

The First Fermi-LAT SNR Catalog: SNR and Cosmic Ray Implications [PDF]

open access: yesProceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016
8 pages, 10 figures; in Proceedings of the 34th International Cosmic Ray Conference (ICRC 2015), The Hague (The Netherlands)
Brandt, T.J.   +4 more
openaire   +5 more sources

Efficient Image Transmission Over OFDM Channel with Energy Conservation and LS Channel Estimation with Various Modulation Schemes [PDF]

open access: yesE3S Web of Conferences, 2023
To send data like text, images, music, and videos, packetization procedures are commonly used in communication apps. Just a portion of carriers in OFDM systems may be suitable for transmitting images due to channel fading.
Shilpa Bagade   +3 more
doaj   +1 more source

Spectral Enhancement of a SiPM Array-Based Radiation Detector [PDF]

open access: yesEPJ Web of Conferences, 2021
Silicon Photomultipliers (SiPMs) have many advantages when used in radiation detectors. Low bias voltage, compactness and immunity to electromagnetic interference are among their prominent benefits.
Harn R.   +5 more
doaj   +1 more source

Comparison of Image Quality According To Application of CT Algorithms for Acquisition of Clinical Information: A Phantom Study [PDF]

open access: yesIranian Journal of Medical Physics, 2023
Introduction: While various algorithms are applied in acquiring diagnostic information during computed tomography, such algorithms may affect image quality.
gui chul Lee, Dongkyoon Han, Joowan Hong
doaj   +1 more source

COVID-19 Vaccination Associated Bilateral Pulmonary Embolism: Cause or Coincidence

open access: yesCase Reports in Pulmonology, 2022
Background. Acute pulmonary embolism (APE) is a common cause of morbidity and mortality all over the world. Sudden onset dyspnea and chest pain are characteristic.
John Omotola Ogunkoya   +3 more
doaj   +1 more source

Use the Frequency Domain to Hide in Some Audio Files [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
In this work, anew hiding algorithm is proposed that depends on using two deferent domain (spatial and frequency) to achieve and provide security and protection for transformed data, which is represented in a text message encrypted using a key of direct ...
Zahraa Tarik   +3 more
doaj   +1 more source

Digital Information Hiding Techniques [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2010
Information hiding, a form of watermark, embeds data into digital media for the purpose of identification and copyright. Several constraints affect this process: the size of data to be hidden, the need for robustness of these data under conditions where ...
Alyaa Abdul Majeed Haleem   +1 more
doaj   +1 more source

Intravoxel Incoherent Motion Quantification Dependent on Measurement SNR and Tissue Perfusion: A Simulation Study [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2023
Background: The intravoxel incoherent motion (IVIM) model extracts both functional and structural information of a tissue using motion-sensitizing gradients.Objective: The Objective of the present work is to investigate the impact of signal to noise ...
Sam Sharifzadeh Javidi   +2 more
doaj   +1 more source

Low-Dose Dopamine in the Management of Intradialysis Hypotension: A Retrospective Cohort Study in Nigeria

open access: yesEuropean Medical Journal Nephrology, 2022
Introduction: Intradialytic hypotension (IDH) still remains a common finding in maintenance haemodialysis despite improvements in dialysis delivery. Measures are needed to minimise some aftermath of IDH like dialysis termination, which can impact poorly
Peter Uduagbamen   +3 more
doaj   +1 more source

Image reconstruction in SNR units: A general method for SNR measurement† [PDF]

open access: yesMagnetic Resonance in Medicine, 2005
AbstractThe method for phased array image reconstruction of uniform noise images may be used in conjunction with proper image scaling as a means of reconstructing images directly in SNR units. This facilitates accurate and precise SNR measurement on a per pixel basis.
Peter, Kellman, Elliot R, McVeigh
openaire   +2 more sources

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