structural coherence
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2022 ◽  
Author(s):  
Hajer Ghodhbani ◽  
MOHAMED NEJI ◽  
Abdulrahman M. Qahtani ◽  
Omar Almutiry ◽  
habib dhahri ◽  
...  
Keyword(s):  

Our work presents a virtual fitting system called Dress-up aiming to treat the task of human appearance transfer across images while preserving texture details and structural coherence of the generated outfit.


2022 ◽  
Author(s):  
Hajer Ghodhbani ◽  
MOHAMED NEJI ◽  
Abdulrahman M. Qahtani ◽  
Omar Almutiry ◽  
habib dhahri ◽  
...  
Keyword(s):  

Our work presents a virtual fitting system called Dress-up aiming to treat the task of human appearance transfer across images while preserving texture details and structural coherence of the generated outfit.


Author(s):  
Federica Bertolotti ◽  
Anna Vivani ◽  
Fabio Ferri ◽  
Pietro Anzini ◽  
Antonio Cervellino ◽  
...  

Geophysics ◽  
2021 ◽  
pp. 1-35
Author(s):  
Jiashun Yao ◽  
Yanghua Wang

Full waveform inversion (FWI) needs a feasible starting model, because otherwise it might converge to a local minimum and the inversion result might suffer from detrimental artifacts. We built a feasible starting model from wells by applying dynamic time warping (DTW) localized rewarp and convolutional neural network (CNN) methods alternatively. We used the DTW localized rewarp method to extrapolate the velocities at well locations to the non-well locations in the model space. Rewarping is conducted based on the local structural coherence which is extracted from a migration image of an initial infeasible model. The extraction uses the DTW method. The purpose of velocity extrapolation is to provide sufficient training samples to train a CNN, which maps local spatial features on the migration image into the velocity quantities of each layer. We further designed an interactive workflow to reject inaccurate network predictions and to improve CNN prediction accuracy by incorporating the Monte Carlo dropout method. We demonstrated that the proposed method is robust against the kinematic incorrectness in the migration velocity model, and is capable to produce a feasible FWI starting model.


2021 ◽  
Vol 118 (42) ◽  
pp. e2107477118
Author(s):  
Jiseok Gim ◽  
Alden Koch ◽  
Laura M. Otter ◽  
Benjamin H. Savitzky ◽  
Sveinung Erland ◽  
...  

A pearl’s distinguished beauty and toughness are attributable to the periodic stacking of aragonite tablets known as nacre. Nacre has naturally occurring mesoscale periodicity that remarkably arises in the absence of discrete translational symmetry. Gleaning the inspiring biomineral design of a pearl requires quantifying its structural coherence and understanding the stochastic processes that influence formation. By characterizing the entire structure of pearls (∼3 mm) in a cross-section at high resolution, we show that nacre has medium-range mesoscale periodicity. Self-correcting growth mechanisms actively remedy disorder and topological defects of the tablets and act as a countervailing process to long-range disorder. Nacre has a correlation length of roughly 16 tablets (∼5.5 µm) despite persistent fluctuations and topological defects. For longer distances (>25 tablets , ∼8.5 µm), the frequency spectrum of nacre tablets follows f−1.5 behavior, suggesting that growth is coupled to external stochastic processes—a universality found across disparate natural phenomena, which now includes pearls.


2021 ◽  
pp. 231-248
Author(s):  
Amalia Amaya

This chapter discusses the concept of coherence and its role in evidential reasoning in law. It examines three main approaches to coherence, namely, structural coherence, narrative coherence, and coherence as constraint satisfaction, and argues that coherence as constraint satisfaction provides an account of the kind of coherence that is relevant to legal fact-finding that is both descriptively adequate and normatively appealing. Next, it addresses some problems concerning the relation between coherence and inference, coherence and virtue, and coherence and truth in the context of legal factfinding. More specifically, it examines three main objections facing a coherentist account of inference, i.e., conservatism, circularity and unfeasibility, and conceptualizes it as an explanatory kind of inference. Then, it articulates a problem that has not been traditionally discussed in the coherentist literature, to wit, the coherence bias, and argues that virtue coherentism has the resources to effectively counteract it. Last, it defends the coherentist approach to evidence and legal proof against three objections that put into question the truth-conduciveness of coherence, namely, the isolation or input objection, the alternative coherent systems objection, and the truth objection. The chapter concludes by suggesting some avenues for further research on coherence, evidence, and legal proof.


2021 ◽  
pp. 91-104
Author(s):  
Alina Szabová ◽  
Zuzana Porubčanová

The ceramic vessels from necropolis No. II were redocumented during the ongoing revision of archaeological material from cemeteries belonging to the Roman military fort with civil hinterland – Gerulata. This necropolis contains the highest informative value for both archaeological and anthropological material. Therefore, for the needs of this study, a set of pottery was chosen from that particular site, which consisted of approximately 120 complete various-shaped artefacts to be used for volume calculation. The vessels primarily served for offerings but were also partly used as urns. Drawing and photo documentation was used to create 3D models of the individual artefacts. These visualisations were a data source for the quantitative measurement of the volume variations. Models and volume calculations were created in Blender open-source software before identifying a correlation between vessel shape and volume and the graves in which they were found. The main subject of this research was to identify potential structural coherence within the funerary habits using the univariate statistical analysis produced in PAST 3 open-source software.


2021 ◽  
Author(s):  
Jiseok Gim ◽  
Alden Koch ◽  
Laura Otter ◽  
Benjamin Savitzky ◽  
Sveinung Erland ◽  
...  

Abstract A pearl’s distinguished beauty and toughness is attributable to the periodic stacking of aragonite tablets known as nacre. Nacre is a naturally occurring mesocrystal that remarkably arises in the absence of translational symmetry. Gleaning the inspiring biomineral design of a pearl requires quantifying its structural coherence and understanding the stochastic processes that govern formation. By characterizing the entire structure of pearls (~3 mm) in cross-section at high resolution, we show nacre is a medium-range mesocrystal formed through nanoparticle assembly processes. Self-correcting growth mechanisms actively remedy disorder and topological defects of the tablets and act as a countervailing force to paracrystallinity (i.e. long-range disorder). Nacre has a correlation length of roughly 16 tablets (~5.5 µm) despite persistent fluctuations and topological defects. For longer distances (> 25 tablets, ~8.5 µm), the frequency spectrum of nacre tablets follows f-1.5 behavior suggesting growth is coupled to external stochastic processes—a universality found across disparate natural phenomena which now includes pearls.


2021 ◽  
Vol 48 (2) ◽  
Author(s):  
Francesco Di Benedetto ◽  
Andrea Giaccherini ◽  
Maurizio Romanelli ◽  
Giordano Montegrossi ◽  
Elena Belluso ◽  
...  

AbstractWe report the results of an experimental multianalytical characterisation of industrial cristobalite powders, used as raw materials for artificial stone production. Cristobalite is considered a serious threat to human health. The study was carried out through X-ray diffraction (XRD), scanning electron microscopy with energy dispersive microanalysis (SEM/EDS), continuous-wave (cw) and pulse electron paramagnetic resonance (EPR) spectroscopy. Our results point out a sub-micrometric size of the structural coherence in cristobalite, associated with numerous stacking defects. Moreover, the material was found characterised by the presence of superoxide radicals, whose persistence appears conceivably long. Radicals in a material synthesized through a high-temperature treatment were generated during the grinding step in the industrial production of cristobalite. During this process, in fact, both superoxide generation and structural defectivity are induced. Indeed, cristobalite powders already result activated by a radical population, before any kind of process in artificial stone production.


RSC Advances ◽  
2021 ◽  
Vol 11 (57) ◽  
pp. 36242-36249
Author(s):  
Alexander Tenenbaum

In the phase space of a globular or intrinsically disordered protein, the momenta's dynamics is less chaotic than the coordinates' dynamics. When a protein is denaturated, a gain in kinetic coherence accompanies the loss of structural coherence.


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