Results 41 to 50 of about 90,878 (176)

Transthyretin amyloid cardiomyopathy: Literature review and red‐flag symptom clusters for each cardiology specialty

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 955-967, April 2025.
Abstract Wild‐type transthyretin amyloid cardiomyopathy (ATTRwt‐CM) is a progressive and infiltrative cardiac disorder that may cause fatal consequences if left untreated. The estimated survival time from diagnosis is approximately 3–6 years. Because of the non‐specificity of initial symptom manifestation and insufficient awareness among treating ...
Yasuhiro Izumiya   +9 more
wiley   +1 more source

Maximum likelihood time-of-arrival estimation using antenna arrays: Application to global navigation satellite systems [PDF]

open access: yes, 1998
The problem of estimating the time-of-arrival (TOA) of a known signal in the presence of interferences and multipath propagation is addressed. This problem, is essential in high precision receivers of the Global Navigation Satellite Systems.
Fernández Rubio, Juan Antonio   +1 more
core  

Multiple Parameter Estimation With Quantized Channel Output

open access: yes, 2010
We present a general problem formulation for optimal parameter estimation based on quantized observations, with application to antenna array communication and processing (channel estimation, time-of-arrival (TOA) and direction-of-arrival (DOA) estimation)
Antreich, Felix   +2 more
core   +1 more source

A General Bayesian Framework for Ellipse-based and Hyperbola-based Damage Localisation in Anisotropic Composite Plates [PDF]

open access: yes, 2015
This paper focuses on Bayesian Lamb wave-based damage localization in structural health monitoring of anisotropic composite materials. A Bayesian framework is applied to take account for uncertainties from experimental time-of-flight measurements and ...
FENDZI, Claude   +3 more
core   +3 more sources

Management Control Systems, Bricolage, and Frugal Innovation: Effects on Value Creation in Startups With a Social Mission

open access: yesKnowledge and Process Management, EarlyView.
ABSTRACT This study analyzes the effects of the management control systems (social networking and organic innovative culture), via bricolage and frugal innovation, in the social and economic value creation of startups with a social mission. Data from 118 Brazilian startups with a social mission were analyzed using structural equation modeling and fuzzy‐
Anderson Betti Frare, Ilse Maria Beuren
wiley   +1 more source

Bayesian CRLB for hybrid ToA and DoA based wireless localization with anchor uncertainty [PDF]

open access: yes, 2015
In this paper, we derive the Bayesian Cramér-Rao lower bound for three dimensional hybrid localization using time-of-arrival (ToA) and direction-of-arrival (DoA) types of measurements.
Abreu, Guiseppe   +2 more
core  

Ultra Wideband Channel Characterization and Ranging in Data Centers [PDF]

open access: yes, 2007
This paper presents a detailed measurement based characterization of the Ultra Wideband (UWB) channels in a data center environment and examines the accuracy of direct ranging using Time of Arrival (ToA) measurements. Modern data centers present a unique
Cheung, D.   +3 more
core   +2 more sources

A pilot variational coupled reanalysis based on the CESAM climate model

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Variational data assimilation of in‐situ and satellite ocean data and reanalysis atmospheric data into an intermediate complexity Earth system model is possible by adjusting the surface fluxes and internal model parameters. This pilot application requires nearly complete information on the atmospheric state for synchronization.
Armin Köhl   +6 more
wiley   +1 more source

Particle Emission-dependent Timing Noise of Pulsars?

open access: yes, 2010
Though pulsars spin regularly, the differences between the observed and predicted ToA (time of arrival), known as "timing noise", can still reach a few milliseconds or more. We try to understand the noise in this paper.
Bailes M   +13 more
core   +1 more source

Micro‐Corrugated Hydrogel Electrodes for High‐Performance Biofuel Cells via Capillary Force and Ligand Exchange‐Induced Metal Nanoparticle Assembly

open access: yesSmall, EarlyView.
We present a high‐performance enzymatic biofuel cell based on a micro‐corrugated hydrogel electrode engineered via capillary force and ligand exchange‐induced assembly of tetra(octylammonium) (TOA)‐stabilized Au nanoparticles (Au NPs). The resulting metallic TOA‐Au NPs hydrogel structure enables seamless electron transfer and stable enzyme ...
Eunju Choi   +10 more
wiley   +1 more source

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