نتایج جستجو برای: mwi
تعداد نتایج: 150 فیلتر نتایج به سال:
Dry microwave imaging (MWI) systems are more practical, hygienic, and fast to operate since they do not require immersion liquid. However, the dielectric contrast between air part of body under examination is larger, causing larger refraction effects. Including in image reconstruction algorithm significantly increases computational effort, especially when nonuniform shapes. Hence, our systemati...
Abstract Background Wolf-Parkinson-White Syndrome (WPW) has been associated with reduced local myocardium deformation during systole. According to guidelines, when the left ventricle (LV) dysfunction is present catheter ablation of accessory pathway may be required, even in asymptomatic patients. Purpose The study aimed assess diagnostic value non-invasive myocardial work predicting subtle abno...
Theological engagement with quantum mechanics has been dominated by the Copenhagen interpretation, failing to reflect fact that philosophers and physicists alike are increasingly moving away from interpretation in favor of other approaches. One such approach, Hugh Everett's so-called Many Worlds Interpretation (MWI), is being taken seriously. As MWI's credibility grows, it imperative metaphysic...
A median graph is a connected graph, such that for any three vertices u, v, w there is exactly one vertex x that lies simultaneously on a shortest (u, v)-path, a shortest (v,w)-path and a shortest (w, u)path. Examples of median graphs are trees, grids and hypercubes. We introduce and study a generalisation of tree decompositions, to be called median decompositions, where instead of decomposing ...
Karl Popper proposed a way to test whether a proposed relation of a quantum-mechanical state to perceived reality in the Copenhagen interpretation (CI) of quantum mechanics-namely that the state of a particle is merely an expression of " what is known " about the system-is in agreement with all experimental facts. A conceptual flaw in Popper's proposal is identified and an improved version of h...
The visual properties of an object provide many cues as to the tensile strength, compliance, and density of the material from which it is made. However, it is not well understood how these implicit associations affect our perceptions of these properties and how they determine the initial forces that are applied when an object is picked up. Here we examine the effects of these cues on such force...
2,5-Diformylfuran (DFF) is an important biorenewable building block, namely for the manufacture of new polymers that may replace existing materials derived from limited fossil fuel resources. The current reported methods for the preparation of DFF are mainly derived from the oxidation of 5-hydroxymethylfurfural (HMF) and, to a lesser extent, directly from fructose. 5-Chloromethylfurfural (CMF) ...
Microwave imaging (MWI) systems are usually enclosed within casings in order to contain the utilized coupling liquid or help mount antenna system. On other hand, inverse scattering algorithms often assume that background medium of system extends infinity (i.e., unbounded assumption). Thus, they typically do not consider reflections occurring at enclosure. For such yield successful images, these...
Badger and Volker (1) claim that our paper (2) incorrectly estimates the wind energy resource and underestimates it bymore than 50%. However, a detailed reading of their work (3) reveals that their estimates are consistent with ours (and others; table 2 of ref. 2), yet their extrapolation to larger scales is flawed and so are their implications. In contrast to ref. 1, we used an atmospheric gen...
This paper presents a full-wave, whole-system modeling of Microwave Imaging Tomography (MWT) systems, to be used as forward model in reconstruction (inverse) algorithms. The full geometry including antennas and their ports is simulated via a Finite Element Method (FEM) approach. A new technique is used to compute the antenna operation in the system, which provides a general method to enforce th...
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