Results 41 to 50 of about 4,191 (134)

On stability of generalized (affine) phase retrieval in the complex case

Journal of Inequalities and Applications, 2019
In this paper, we discuss the stability of generalized phase retrieval and generalized affine phase retrieval in the complex case. By the realification method, we obtain the bi-Lipschitz property in the absence of noise case and Cramer–Rao lower bound ...
Zhitao Zhuang
doaj   +1 more source

Supercritical Angle Fluorescence and Raman Techniques in Biophotonics

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
Supercritical angle fluorescence (SAF) microscopy and supercritical angle Raman (SAR) spectroscopy have emerged as powerful tools in the field of biophotonics, enabling high‐resolution imaging and spectroscopy of biological specimens near interfaces. This review article provides a comprehensive overview of the principles, techniques, applications, and ...
Subir Das, Nathalia Simea Münch, Stefan Seeger   +2 more
wiley   +1 more source

Quantum Metrology in the Finite-Sample Regime

PRX Quantum
In quantum metrology, a major application of quantum technologies, the ultimate precision of estimating an unknown parameter is often stated in terms of the Cramér-Rao bound.
Johannes Jakob Meyer, Sumeet Khatri, Daniel Stilck França, Jens Eisert, Philippe Faist   +4 more
doaj   +1 more source

Semiparametric estimation for incoherent optical imaging

Physical Review Research, 2019
The theory of semiparametric estimation offers an elegant way of computing the Cramér-Rao bound for a parameter of interest in the midst of infinitely many nuisance parameters.
Mankei Tsang
doaj   +1 more source

Effect of Water Suppression and Metabolite Cycling on Quantification of 1H MRS Spectra in the Human Brain at 3 Tesla

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 542-547, August 2026.
ABSTRACT Purpose This study investigates the effect of VAPOR water suppression and metabolite cycling on metabolite quantification and macromolecules in proton magnetic resonance spectroscopy. Methods Single‐voxel semi‐LASER spectra (TR/TE = 3000/28 ms) and metabolite‐nulled spectra (macromolecules) were acquired in five healthy subjects in the ...
Dinesh K. Deelchand, Pierre‐Gilles Henry   +1 more
wiley   +1 more source

MR Spectroscopy Without Water Suppression Using the Gradient Impulse Response Function

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 530-541, August 2026.
ABSTRACT PurposeNon‐water‐suppressed proton spectroscopy, 1H‐MRS, is desirable, as retaining the strong water resonance can facilitate automated online data corrections, internal concentration referencing, and monitoring of line narrowing effects in functional MRS. Removal of the water suppression module can also mitigate magnetization transfer effects
James B. Bacon, Peter Jezzard, William T. Clarke   +2 more
wiley   +1 more source

A Systems Pharmacology Model of Aging Identifies Optimal Combination Therapies With Secondary Benefits on Weight Loss and Metabolic Health

CPT: Pharmacometrics &Systems Pharmacology, Volume 15, Issue 8, August 2026.
ABSTRACT Aging is a systems‐level process linking metabolic dysfunction, inflammation, impaired repair, frailty, and multimorbidity, whereas existing pharmacological strategies usually optimize disease‐specific endpoints such as weight loss or HbA1c rather than aging‐related trajectories. We developed an SBML‐compliant quantitative systems pharmacology
Igor Goryanin, Bob Damms, Irina Goryanin
wiley   +1 more source

Parallel time-delay estimation algorithm for GMSK mixing signals

Tongxin xuebao, 2011
Parallel time-delay estimation algorithm was proposed for GMSK mixing signals based on linear approxima-tion approach.Parallel estimation equations were built in flat-fading channel according to autocorrelation of over-sampling based mixing signals and ...
RUI Guo-sheng1, XU Bin2, ZHANG Song2
doaj   +2 more sources

Improving polarized neutron reflectometry experiments on soft‐matter samples: optimization of the solid substrate structure

Journal of Applied Crystallography, Volume 59, Issue 4, Page 1192-1199, August 2026.
We demonstrate a Fisher‐information‐based strategy for optimizing the solid substrate structure in polarized neutron reflectometry experiments on soft‐matter samples. The approach identifies magnetic reference layer designs that improve experimentally accessible information and provides a general framework for more efficient reflectometry experiment ...
Ivan P. Yakimenko, Alessandra Luchini, Joshaniel F. K. Cooper, Sebastian Köhler, Tommy Nylander, Sean Langridge, Christy J. Kinane, Andrew J. Caruana, Björgvin Hjörvarsson, Max Wolff, Alexei Vorobiev, Sergiy Valyukh, Fredrik Eriksson, Jens Birch, Kenneth Järrendahl   +14 more
wiley   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, Volume 13, Issue 7, Page 1452-1466, July 2026.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source