Results 1 to 10 of about 2,247,992 (298)

Energy recovery linac based fully coherent light source [PDF]

open access: yesScientific Reports, 2021
Energy recovery linac (ERL) holds great promise for generating high repetition-rate and high brightness electron beams. The application of ERL to drive a free-electron laser is currently limited by its low peak current.
Z. T. Zhao   +4 more
doaj   +5 more sources

Partially coherent phase imaging with simultaneous source recovery. [PDF]

open access: yesBiomed Opt Express, 2015
We propose a new method for phase retrieval that uses partially coherent illumination created by any arbitrary source shape in Köhler geometry. Using a stack of defocused intensity images, we recover not only the phase and amplitude of the sample, but also an estimate of the unknown source shape, which describes the spatial coherence of the ...
Jingshan Z, Tian L, Dauwels J, Waller L.
europepmc   +5 more sources

Nonparametric Simultaneous Sparse Recovery: an Application to Source Localization [PDF]

open access: yes2015 23rd European Signal Processing Conference (EUSIPCO), 2015
We consider multichannel sparse recovery problem where the objective is to find good recovery of jointly sparse unknown signal vectors from the given multiple measurement vectors which are different linear combinations of the same known elementary ...
Ollila, Esa
core   +5 more sources

Structured dissociative PCA methods for high dimensional neuroimaging signal decomposition [PDF]

open access: yesScientific Reports
Sparse principal component analysis (SPCA) and independent component analysis (ICA) pipelines are widely used for fMRI blind source separation. However,  applying sparsity and independence constraints in isolation can distort spatial coherence and ...
Muhammad Usman Khalid   +4 more
doaj   +2 more sources

Digestate-Derived Ammonium Fertilizers and Their Blends as Substitutes to Synthetic Nitrogen Fertilizers

open access: yesApplied Sciences, 2022
Nutrient recovery from biomass streams generates novel recycling-derived fertilizers (RDFs). The effect of RDFs depends on their nutrient content and variability, which can aid or hinder their use by end-users.
Amrita Saju   +5 more
doaj   +1 more source

ENTERPRISES INVESTMENT ACTIVITY: SOURCES OF RECOVERY [PDF]

open access: yesHerald of Kyiv National University of Trade and Economics, 2021
Background. The article examines the essence and main factors influencing the investment activity of economic entities, identifies the main means of stimulating it. The directions of attracting investments by the sectors of Ukraine’s economy are considered.
GULIAIEVA Nataliia, VAVDIICHYK Iryna
openaire   +1 more source

Problem of describing the function of a GPR source

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
In this paper, we consider the problem of determining the source h(t)δ(x) of electromagnetic waves from GPR data. The task of electromagnetic sensing is to find the pulse characteristic of the medium r(t) and consists in calculating the response of the ...
S.I. Kabanikhin   +4 more
doaj   +1 more source

ENERGY RECOVERY OF BONE WASTE AS HEAT SOURCE [PDF]

open access: yesActa Tecnología, 2019
Modern food industry concerning meat producers produce high amounts of bone waste. Bones represent biggest portion of zoo-mass waste which must be destroyed for hygienically reasons.
Juraj Trnka   +2 more
doaj   +1 more source

Sparse Component Analysis (SCA) Based on Adaptive Time—Frequency Thresholding for Underdetermined Blind Source Separation (UBSS)

open access: yesSensors, 2023
Blind source separation (BSS) recovers source signals from observations without knowing the mixing process or source signals. Underdetermined blind source separation (UBSS) occurs when there are fewer mixes than source signals. Sparse component analysis (
Norsalina Hassan, Dzati Athiar Ramli
doaj   +1 more source

Analysis of energy-saving effect of fresh air heat recovery system for residential buildings in severe cold area [PDF]

open access: yesE3S Web of Conferences, 2022
In recent years, the tightness of residential buildings has been continuously enhanced, causing the problem of indoor air quality degradation. Therefore, it is necessary to introduce fresh air that meets the air quality requirements from the outside, and
Hao Yuxiang   +3 more
doaj   +1 more source

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