Results 51 to 60 of about 51,223 (249)

Use of the Discrete Variable Representation Basis in Nuclear Physics

, 2013
The discrete variable representation (DVR) basis is nearly optimal for numerically representing wave functions in nuclear physics: Suitable problems enjoy exponential convergence, yet the Hamiltonian remains sparse. We show that one can often use smaller
Bulgac, Aurel, Forbes, Michael McNeil
core   +1 more source

Hyperfields, truncated DVRs, and valued fields [PDF]

Journal of Number Theory, 2020
For any two complete discrete valued fields $K_1$ and $K_2$ of mixed characteristic with perfect residue fields, we show that if the $n$-th valued hyperfields of $K_1$ and $K_2$ are isomorphic over $p$ for each $n\ge1$, then $K_1$ and $K_2$ are isomorphic.
openaire   +3 more sources

Enhanced DVR Control System Based on the Harris Hawks Optimization Algorithm

IEEE Access, 2020
The dynamic voltage restorer’s (DVR) transient, steady-state, and dynamic responses are essential requirements for protecting sensitive loads against upstream voltage disturbances via the DVR’s ride-through capabilities.
Zeinab Elkady, N. Abdel-Rahim, A. Mansour, F. Bendary   +3 more
semanticscholar   +1 more source

PQ Improvement by Moderation of Multi-Level Inverter Controlling Techniques and Intensifying the Performance of DVR

Advances in Electrical and Electronic Engineering, 2015
A novel control scheme is proposed for the enhancement of Dynamic Voltage Restorer (DVR) performance. In this paper, the moderation of inverter controlling techniques has been adopted to intensify the DVR characteristics and thereby to improve the Power ...
Vinay Kumar Awaar, Praveen Jugge, Tarakalyani S   +2 more
doaj   +1 more source

Noninvasive Measurement of [¹¹C]PiB Distribution Volume Using Integrated PET/MRI

Diagnostics, 2020
A noninvasive image-derived input function (IDIF) method using PET/MRI was applied to quantitative measurements of [11C] Pittsburgh compound-B (PiB) distribution volume (DV) and compared with other metrics.
Hidehiko Okazawa, Masamichi Ikawa, Tetsuya Tsujikawa, Akira Makino, Tetsuya Mori, Yasushi Kiyono, Hirotaka Kosaka   +6 more
doaj   +1 more source

Intelligent Controlled Dynamic Voltage Restorer for Improving Transient Voltage Quality

IEEE Access, 2023
A dynamic voltage restorer (DVR) is developed to stabilize the three-phase load voltage under the sudden grid voltage distortion conditions, including the voltage sag, swell and unbalance.
Kuang-Hsiung Tan, Jun-Hao Chen, Yih-Der Lee   +2 more
doaj   +1 more source

Conversion of Dagang Vacuum Residue into Oxygen-Containing Organic Compounds by Photo-Oxidation with H2O2 over TiO2

International Journal of Photoenergy, 2011
The photocatalytic depolymerization of Dagang vacuum residue (DVR) was carried out with H2O2 over TiO2 in a photochemical reactor. Most of the organic matter
Heng-Shen Xie, Zhi-Min Zong, Qing Wei, Tong Liu, Jian-Jun Zhao, Pei-Zhi Zhao, Shi-Hua Zhang, Xian-Yong Wei   +7 more
doaj   +1 more source

Temporal Modeling of Amyloid and Tau Trajectories in Alzheimer's Disease Using PET and Plasma Biomarkers

Annals of Neurology, EarlyView.
Objective This study aimed to compare positron emission tomography (PET) and plasma‐based temporal modeling of amyloid and tau biomarkers in Alzheimer's disease. Methods Longitudinal amyloid PET (n = 1,097, mean age ± SD = 72.5 ± 7.38 year, 51.4% male), 18F‐flortaucipir tau‐PET (n = 230, 74.3 ± 7.18 year, 52.2% female), and Fujirebio Lumipulse plasma p‐
Christopher A. Brown, Katheryn A.Q. Cousins, Magdalena Korecka, Emily McGrew, Alice Chen‐Plotkin, John A. Detre, Corey T. McMillan, Edward B. Lee, Sandhitsu R. Das, Dawn Mechanic‐Hamilton, Paul A. Yushkevich, Ilya M. Nasrallah, Leslie M. Shaw, for the Alzheimer's Disease Neuroimaging Initiative, David A. Wolk   +14 more
wiley   +1 more source

Strategies to reduce sample sizes in Alzheimer’s disease primary and secondary prevention trials using longitudinal amyloid PET imaging

Alzheimer’s Research & Therapy, 2021
Background Detecting subtle-to-moderate biomarker changes such as those in amyloid PET imaging becomes increasingly relevant in the context of primary and secondary prevention of Alzheimer’s disease (AD).
Isadora Lopes Alves, Fiona Heeman, Lyduine E. Collij, Gemma Salvadó, Nelleke Tolboom, Natàlia Vilor-Tejedor, Pawel Markiewicz, Maqsood Yaqub, David Cash, Elizabeth C. Mormino, Philip S. Insel, Ronald Boellaard, Bart N. M. van Berckel, Adriaan A. Lammertsma, Frederik Barkhof, Juan Domingo Gispert   +15 more
doaj   +1 more source

Hacking Digital Video Recorders: Potential Copyright Liability for DVR Hackers and Service Providers [PDF]

, 2001
To what extent does Sony\u27s time-shifting fair use argument extend to recent innovations that make it easier for hackers use DVR technology to generate copies of protected material?
Johnson, Ashley A.
core   +1 more source