Results 121 to 130 of about 111,011 (272)

“MR Fingerprinting for Imaging Brain Hemodynamics and Oxygenation”

open access: yesJournal of Magnetic Resonance Imaging, Volume 62, Issue 6, Page 1525-1545, December 2025.
ABSTRACT Over the past decade, several studies have explored the potential of magnetic resonance fingerprinting (MRF) for the quantification of brain hemodynamics, oxygenation, and perfusion. Recent advances in simulation models and reconstruction frameworks have also significantly enhanced the accuracy of vascular parameter estimation.
T. Coudert   +6 more
wiley   +1 more source

Therapeutic Approaches for Enhancing Spinal Fusion in Low Back Pain: A Review With a Focus on the Elderly

open access: yesJOR SPINE, Volume 8, Issue 4, December 2025.
The review summarizes the current clinical problems of non‐spinal fusions in orthopaedics. I refers to selected biological examples of how ossification can be better achieved in elderly patients. ABSTRACT Background Low back pain (LBP) is a prevalent cause of disability worldwide, particularly among the elderly, with degenerative spinal conditions ...
Shuimu Chen   +5 more
wiley   +1 more source

MapReduce: within, outside, or on the side-by-side with parallel DBMSs?

open access: yesТруды Института системного программирования РАН, 2018
The approaches of use of MapReduce technology together with analytical DBMSs are discussed. The paper considers approaches where one implements MapReduce within a kernel of a parallel DBMS, where MapReduce serves as a communication infrastructure of a ...
Sergey D. Kuznetsov.
doaj  

Security Issues and Their Techniques in DBMS - A Novel Survey

open access: bronze, 2014
Mohd Muntjir   +3 more
openalex   +1 more source

A 16×16 45-degree Slant-Polarized Gapwaveguide Phased Array with 65 dBm EIRP at 28 GHz [PDF]

open access: gold, 2022
Alireza Bagherimoghim   +6 more
openalex   +1 more source

Real‐time specific absorption rate supervision for a 32‐channel RF transmit system with virtual observation points

open access: yesMagnetic Resonance in Medicine, Volume 94, Issue 6, Page 2785-2793, December 2025.
Abstract Purpose Real‐time supervision is a crucial element of an RF parallel transmit (pTx) system to supervise safety of the subject during MR imaging and to utilize the full potential of the RF array. However, the computational demand for the specific absorption rate (SAR) calculation scales much greater than linearly with the number of RF channels.
Thomas M. Fiedler   +10 more
wiley   +1 more source

The Main Elements of Development of Mandatory Access Control Mechanism in DBMS MySQL based on DP-Models

open access: yesБезопасность информационных технологий, 2014
It is proposed an approach to development of mandatory access control in originally discrete DBMS MySQL based on DP-models. It is performed analysis of the existent access control mechanisms in this DBMS, it is described DP-model of MySQL, and it is ...
Denis Nikolaevich Kolegov   +2 more
doaj  

The κ−μ$$ \kappa -\mu $$/Gamma‐Rayleigh Fading Model: A Composite Fading Model for Powerline‐Wireless Communication Channels

open access: yesInternational Journal of Communication Systems, Volume 38, Issue 17, 25 November 2025.
Fading effects in radio communication systems are often modelled using statistical distributions. Some distributions are derived based on physical channel properties. In contrast, others are adapted from statistics and applied to channel modelling based on their goodness‐of‐fit to measurements or on their mathematical simplicity.
Kealeboga Mokise, Hermanus C. Myburgh
wiley   +1 more source

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