cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Aggregation and fragmentation dynamics in random flows: From tracers to inertial aggregates
Creators: name: Guseva, Ksenia
name: Feudel, Ulrike
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate aggregation and fragmentation dynamics of tracers and inertial aggregates in random flows leading to steady state size distributions. Our objective is to elucidate the impact of changes in aggregation rates, due to differences in advection dynamics, especially with respect to the influence of inertial effects. This aggregation process is, at the same time, balanced by fragmentation triggered by local hydrodynamic stress. Our study employs an individual-particle-based model, tracking position, velocity and size of each aggregate. We compare the steady-state size distribution formed by tracers and inertial aggregates, characterized by different sizes and densities. On the one hand, we show that the size distributions change their shape with changes of the dilution rate of the suspension. On the other hand, we obtain that the size distributions formed with different binding strengths between monomers can be rescaled to a single form with the use of a characteristic size for both dense inertial particles and tracer monomers. Nevertheless, this last scaling relation also fails if the size distribution contains aggregates that behave as tracer-like and as inertial-like, which results in a crossover between different scalings.
description: 12 pages,11 figures
Dry Eye Syndrome: A Multifactorial Disease
Creators: name: Kottaiyan R
Publisher: name: figshare
Year: 2017
Subjects: Diseases

description: Dry eye syndrome, a multifactorial disease of the ocular surface, is the leading cause for ophthalmology office visits, affecting around 60 million people in the United States alone. Due to a variety of factors, it is challenging to make a definitive diagnosis in the early stages of the disease. The ocular examination, including the fluorescein break up time and Schirmer’s test has been a critical part of the diagnosis algorithm. But these tests are severely limited owing to their relative invasiveness and lack of specificity. To overcome the limitations of the current gold standards, there is a growing need for the use of noninvasive tear imaging technologies like the thermal imaging
Schwarzschild black-hole immersed in an electric or magnetic background in Entangled Relativity
Creators: name: Minazzoli, Olivier
name: Wavasseur, Maxime
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we present the solution for a Schwarzschild black-hole immersed in an electric or magnetic background field à la Melvin within the framework of Entangled Relativity. Previous solutions in Entangled Relativity required black-holes to be charged for the matter field to be defined everywhere. This is because the theory precludes the existence of vacuum solutions, thereby satisfying Einstein's definition of Mach's Principle. The current black-hole solutions represent the first exact and neutral black-hole solutions of Entangled Relativity discovered to date. The Schwarzschild black-hole of General Relativity emerges as a limit of these solutions when the background field approaches zero, whereas the Melvin solution of General Relativity does not emerge as a limit when the black hole's size approaches zero. This finding suggests that astrophysical black-holes in Entangled Relativity are indistinguishable from those in General Relativity, given the generally weak interstellar density of matter fields.
description: 8 pages
Electrostatic problems for arbitrary rotationally symmetric double-connected conductors and complementary structures
Creators: name: Sagradian, Martin
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: This thesis considers potential theory problems for rotationally symmetric conductors. The profile of structures is arbitrary and it allows one to model a variety of screens important in applications. Mathematically, the problem is described by the boundary value problem for the Laplace equation subject to the Dirichlet boundary conditions. We consider two types of conductors: double-connected conductors with the apertures of equal angular size and complementary structures to them. The problem is solved by the semi-analytical Method of Regularization (MoR) that provides a mathematically rigorous solution. The MoR, based on Abel’s integral transform and theory of triple series equations with the Jacobi polynomials, allows us to transform the ill-posed initial system of series equations arising from the standard formulation of the problem to a well-conditioned second kind Fredholm matrix equation. Numerical algorithms based upon the solution of the matrix equation, after truncation to a finite system of equations, converge with guaranteed and predictable accuracy. In this thesis the generalization of the solution algorithm for arbitrarily shaped double-connected screens is developed in the case of rotationally symmetric prescribed potential and the solution for the complementary structures in general case (for arbitrarily preassigned potential) is obtained.
Comparative Study Of Visual Outcomes Following Corrective Vitrectomy: Non-Traumatic Versus Traumatic Etiologies
Creators: name: Shah MA
name: Shah SM
name: PJ, Kalyani
name: Shah AH
name: Shah PD
name: Patel KB
Publisher: name: figshare
Year: 2017
Subjects: Diseases

description: Introduction: Nucleus drop is a rare and serious complication. We investigated visual outcomes following corrective surgery, and compared outcomes between surgeries that followed traumatic injuries and those where the etiology was nontraumatic. Method: A retrospective cohort study was performed using information collected from medical records regarding cases of vitrectomy performed for nucleus drop. Patients were grouped into traumatic and non-traumatic cases. After pars plana vitrectomy and nucleus removal with use of a phacofragmatome, all data were collected according to a standard follow-up format. Results: Our cohort consisted of 37 eyes of 37 patients. Mean patient age was 58.8+/-9.35, ranging from 31 to 75 years (Table1). Of these cases, 12 (32.4%) were traumatic and 25 (67.6%) followed cataract surgeries. We found that vision in 15 (40.4%) cases improved to more than 6/24 and in 5 (13.5%) it did not improve (>1/60). Conclusion: Visual outcome following corrective vitrectomy for nucleus drop may be satisfactory if managed well; no significant difference in outcome was noted based on etiology
Non-thermalization in trapped atomic ion spin chains
Creators: name: Hess, P. W.
name: Becker, P.
name: Kaplan, H. B.
name: Kyprianidis, A.
name: Lee, A. C.
name: Neyenhuis, B.
name: Pagano, G.
name: Richerme, P.
name: Senko, C.
name: Smith, J.
name: Tan, W. L.
name: Zhang, J.
name: Monroe, C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Linear arrays of trapped and laser cooled atomic ions are a versatile platform for studying emergent phenomena in strongly-interacting many-body systems. Effective spins are encoded in long-lived electronic levels of each ion and made to interact through laser mediated optical dipole forces. The advantages of experiments with cold trapped ions, including high spatiotemporal resolution, decoupling from the external environment, and control over the system Hamiltonian, are used to measure quantum effects not always accessible in natural condensed matter samples. In this review we highlight recent work using trapped ions to explore a variety of non-ergodic phenomena in long-range interacting spin-models which are heralded by memory of out-of-equilibrium initial conditions. We observe long-lived memory in static magnetizations for quenched many-body localization and prethermalization, while memory is preserved in the periodic oscillations of a driven discrete time crystal state.
description: 14 pages, 5 figures, submitted for edition of Phil. Trans. R. Soc. A on "Breakdown of ergodicity in quantum systems"
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 254
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: Petot, Frédéric
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 254, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 254, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
A metamodel for confined yield stress flows and parameters' estimation
Creators: name: Berger, Clément
name: Coulette, David
name: Vigneaux, Paul
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: Classical Physics (physics.class-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: With the growing demand of mineral consumption, the management of the mining waste is crucial. Cemented paste backfill (CPB) is one of the techniques developed by the mining industry to fill the voids generated by the excavation of underground spaces. The CPB process is the subject of various studies aimed at optimizing its implementation in the field. In this article, we focus on the modelling of the backfill phase where it has been shown in [Vigneaux et al., Cem. Concr. Res. 164 (2023) 107038] that a viscoplastic lubrication model can be used to describe CPB experiments. The aim here is to propose an accelerated method for performing the parameters' estimation of the properties of the paste (typically its rheological properties), with an inverse problem procedure based on observed height profiles of the paste. The inversion procedure is based on a metamodel built from an initial partial differential equation model, thanks to a Polynomial Chaos Expansion coupled with a Principal Component Analysis.
description: Rheologica Acta, 2024
Exploring the genome rearrangement system, SCRaMbLE, to introduce DNA into Saccharomyces cerevisiae
Creators: name: Wightman, Elizabeth Louise Izolde
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: A novel genome rearrangement tool, SCRaMbLE (synthetic chromosome rearrangement and modification by loxP mediated evolution), has been designed for the synthetic genome of S. cerevisiae. Collaborators of the 'yeast 2.0' project initially construct one version of the synthetic genome. However, SCRaMbLE can rapidly generate billions of unique genomes in even a small culture. Only one of the 16 chromosomes is currently complete, limiting full genome rearrangement by SCRaMbLE. As a contribution to the international project, I constructed and integrated a 'megachunk' of synthetic chromosome 14 into S. cerevisiae. Currently, SCRaMbLE is limited to S. cerevisiae DNA only. I aimed to explore SCRaMbLE in a novel application: as a tool to introduce foreign DNA into S. cervisiae. To develop protocols, the S. cerevisiae marker gene URA3 was used to SCRaMbLE into yeast. SCRaMbLEing URA3 increasing the transformation efficiency significantly compared to non-SCRaMbLEd URA3.gDNA from the filamentous fungus Trichoderma reesei was used as an example of SCRaMbLEing large libraries of foreign DNA into yeast. Successful attachment of SCRaMbLE recombination sites to gDNA fragments was achieved using a cloning approach, gDNA fragments were SCRaMbLEd into yeast and cellulase activity was screened.
Closing the Gap between Teaching and Assessment
Creators: name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Evidence-based teaching is based upon a model of learning in which assessment plays a central role.
description: written for the report of the Association of American Universities (AAU) Workshop on Effective Evaluation of Teaching and Learning with an invited presentation titled: Closing the gap between teaching and assessment
Anatomical Differences of Corneal Surface Parameters
Creators: name: Benes P
name: Holoubková Z
name: Petrová, Sylvie
Publisher: name: figshare
Year: 2017
Subjects: Diseases

description: Purpose: The aim of this study was to analyze possible anatomical differences of corneal surface parameters in the sample of population and between the genders. Methods: This study is presenting the sample of population which has consisted of 1354 subjects, 794 female and 560 male eyes. Subjects were chosen randomly. To determine and evaluate all values of corneal surface parameters, auto refractor keratometer with Placido disc (KR 8100P, Topcon, Japan) and the program Software Corneal Analyzer, Version 3.0 were used. The results were registered and then processed statistically. Results: From a large amounts of data, tere are chosen only the results in this study that showed statistically significant (p<0. 05) differences between right and left eye and between the genders. Found variations are in: the steepest meridian, the axis of the steepest meridian, corneal astigmatism, astigmatic difference and corneal diameter (HVID). Conclusion: The study shows that in optometric practice is also important to pay attention not only to functional but also individual anatomical parameters of corneal surface.
title: ADCO, Cartulaire de Fontenay, premier fragment (XIIIe siècle), Cart. 201 (15 H 9), 175 folios, f. 047v
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de Fontenay, premier fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), 175 folios. Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Fontenay, premier fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), 175 folios, f. 047v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Fontenay
description: Provenance: http://www.wikidata.org/entity/Q464918
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb119679755
description: Provenance: https://www.geonames.org/7874015
description: Provenance: http://www.idref.fr/027691802/id
Can Spectral-Domain Optical Coherence Tomography Findings Forecast Visual Outcome in the Case of Macular Edema?
Creators: name: Shah M
name: Shah S
name: Upadhyay P
name: P, Kalyani
name: P, Ritu
Publisher: name: figshare
Year: 2017
Subjects: Diseases

description: Purpose: To evaluate the relationship between visual outcome and the photoreceptor inner segment/outer segment (IS/ OS) layer status in patients with macular edema of any etiology. Design: Cross-sectional study Patients with macular edema of any etiology and who did not present with a disrupted IS/OS line were enrolled. We obtained simultaneous visual acuity and optical coherence tomography (OCT) of patients with macular edema using a spectral-domain (SD) OCT system. The device recorded retinal thickness on tomography. SD OCT was recorded repeatedly in patients before and after treatment with an anti-vascular endothelial growth factor agent or triamcinolone, and the central thickness, IS, and OS were measured. The IS/OS ratio was calculated, and the data were analyzed statistically. We also reviewed the OCT scans to determine the type of macular edema, i.e., cystoid macular edema or diffuse macular edema (absence of any cysts). Results: Forty-eight patients (48 eyes: 21 male and 27 female; median age, 58.50 ± 10.8 years) with macular edema were enrolled. Twenty-seven eyes had cystoid macular edema, and 10 eyes had diffuse macular edema. The median central subfield thickness was 462 ± 150.3 μm. The IS/OS layer was observed in all 48 eyes, and the IS/OS ratio was calculated. Eight (16.7%), 11 (22.9%), and 29 (60.4%) eyes had venous tributary occlusion, post-cataract cystoid macular edema, and diabetic macular edema, respectively. There was a significant difference between pre- and post-treatment vision (p = 0.001, Table 2). When we compared the pre and post treatment IS, OS, and IS/OS ratio with t test (p = 0.000 with 95% CI). The presenting vision differed significantly according to the IS/OS ratio (p = 0.010, Table 3). Conclusion: This study demonstrated that the IS/OS ratio is not significantly correlated with final visual acuity following treatment for macular edema.
Isolation of a strong constitutive promoter from Euglena gracilis
Creators: name: Khatiwada, Bishal
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Euglena gracilis is a unicellular protist currently used to produce nutraceuticals, cosmeceuticals and biofuel. Full exploitation of the organisms requires the development of genetic engineering tools. Chloroplast transformation using the non-native promoter (CaMV 35S) has been reported, but there is no published information about the use of native promoters for recombinant gene expression in Euglena. The aim of this research was to isolate a strong constitutive promoter with a view to establish an expression vector for E. gracilis. Proteins produced during dark cultivation were separated using 2D SDS-PAGE and identified by mass spectrometry. One of the highly expressed proteins was glyceraldehyde 3-phosphate dehydrogenase (GAPDH). The gapC gene encoding GAPDH was identified using BLAST. The 5’ UTR region of the gene was amplified by PCR using gDNA of E. gracilis as a template and inserted into a promoterless E. coli and yeast plasmids containing a reporter gene (β-gal or eGFP). Promoter activity was verified by successful expression of EGFP in yeast. Sequence analysis of the putative Euglena promoter revealed the presence of eukaryotic promoter elements like CAAT box, GC Box and myb-like transcriptional activator. Final confirmation of the promoter activity will be carried out in Euglena after a suitable transformation method has been established.
Van der Waals interaction between a moving nano-cylinder and a liquid thin film
Creators: name: Ledesma-Alonso, René
name: Raphaël, Elie
name: Salez, Thomas
name: Tordjeman, Philippe
name: Legendre, Dominique
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We study the static and dynamic interaction between a horizontal cylindrical nano-probe and a thin liquid film. The effects of the physical and geometrical parameters, with a special focus on the film thickness, the probe speed, and the distance between the probe and the free surface are analyzed. Deformation profiles have been computed numerically from a Reynolds lubrication equation, coupled to a modified Young-Laplace equation, which takes into account the probe/liquid and the liquid/substrate non-retarded van der Waals interactions. We have found that the film thickness and the probe speed have a significant effect on the threshold separation distance below which the jump-to-contact instability is triggered. These results encourage the use of horizontal cylindrical nano-probes to scan thin liquid films, in order to determine either the physical or geometrical properties of the latter, through the measurement of interaction forces.
Digging Into Normal Incorporated Stereo Matching
Creators: name: Liu, Zihua
name: Zhang, Songyan
name: Wang, Zhicheng
name: Okutomi, Masatoshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Despite the remarkable progress facilitated by learning-based stereo-matching algorithms, disparity estimation in low-texture, occluded, and bordered regions still remains a bottleneck that limits the performance. To tackle these challenges, geometric guidance like plane information is necessary as it provides intuitive guidance about disparity consistency and affinity similarity. In this paper, we propose a normal incorporated joint learning framework consisting of two specific modules named non-local disparity propagation(NDP) and affinity-aware residual learning(ARL). The estimated normal map is first utilized for calculating a non-local affinity matrix and a non-local offset to perform spatial propagation at the disparity level. To enhance geometric consistency, especially in low-texture regions, the estimated normal map is then leveraged to calculate a local affinity matrix, providing the residual learning with information about where the correction should refer and thus improving the residual learning efficiency. Extensive experiments on several public datasets including Scene Flow, KITTI 2015, and Middlebury 2014 validate the effectiveness of our proposed method. By the time we finished this work, our approach ranked 1st for stereo matching across foreground pixels on the KITTI 2015 dataset and 3rd on the Scene Flow dataset among all the published works.
Improved larval diets for mass rearing of Queensland fruit fly (Bactrocera tryoni)
Creators: name: Moadeli, Tahereh
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Queensland fruit fly (Bactrocera tryoni, (Froggatt), aka Q-fly), is one of the most damaging horticultural pests in Australia. Sustainable methods are needed for Q-fly management. Sterile insect technique (SIT), in which millions of sterile flies are released to reduce pest reproduction, is effective. However, more efficient larval diet formulations are needed for production of high quality flies in a cost-effective mass rearing system. This thesis was conducted with the aim of developing high productivity larval diets for Q-fly mass rearing, and providing new insights into economical and nutritional aspects of larval diet formulation and Q-fly nutritional requirements. Two formulations of 'gel diet' were developed, and these new diets outperformed both traditional solid diets and more recently developed liquid diets, with outstanding benefits for rearing both at laboratory and factory scale. Subsequent investigations improved these formulations by identifying economical and effective yeasts (a source of amino acids) and plant oils (a source of lipids), as well as exploring the roles of specific nutritional components of yeasts and plant oils (fatty acid, vitamin E and amino acid contents). The initial and refined formulations were then investigated over multiple generations, providing further demonstration of the effectiveness of gel diets for mass rearing. In conclusion, the aims of the project were achieved and the gel diets that were developed have been implemented in the new SIT plus fruit fly mass-rearing facility in Port Augusta (South Australia), where they are already producing more than 20 million flies each week. The formulations of gel diet that have been developed for mass rearing of Q-fly could be modified and further developed for mass rearing of other fruit flies around the world, providing an efficient and economical solution for other SIT programs as well as providing a valuable tool for basic studies of nutrition.
Snapshots for intra- and inter-ocular differences at retinal proteins levels
Creators: name: TC, Lam
name: Ka-Man Chun R
name: KK, Li
name: CH, To
Publisher: name: figshare
Year: 2017
Subjects: Diseases

description: We attempted to study the intra- and inter-animal variations of protein expressions in chick retina using two-dimensional electrophoresis (2-DE). The posterior retinas of 10 day-old chicks were harvested. The proteins were extracted and 2-DE protein profiles between two eyes of the same individual and among different animals were compared and analysed using Melanie gel analysis software. Computerised Melanie gel analysis showed a high similarity of 83.1 ± 2.1% (mean ± SEM, n=3) between the protein profiles of right and left retinas from the same animal. However, this percentage dropped to 64.1 ± 3.1% (Mean ± SEM, n=3) when comparing between different animal samples. We have shown that there were good similarities in intra-animal comparison but poor in inter-animal comparison. We have documented the caveat in comparing the protein profiles between different animals where apparent differentially display protein could actually be a false positive signal. The finding highlighted the potential usefulness of the proteomic approach in basic eye research where comparison between control and experimental tissues could be carried out in the same animal, rather than using different animals.
Son of Zorn's Lemma: Targeted Style Transfer Using Instance-aware Semantic Segmentation
Creators: name: Castillo, Carlos
name: De, Soham
name: Han, Xintong
name: Singh, Bharat
name: Yadav, Abhay Kumar
name: Goldstein, Tom
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Style transfer is an important task in which the style of a source image is mapped onto that of a target image. The method is useful for synthesizing derivative works of a particular artist or specific painting. This work considers targeted style transfer, in which the style of a template image is used to alter only part of a target image. For example, an artist may wish to alter the style of only one particular object in a target image without altering the object's general morphology or surroundings. This is useful, for example, in augmented reality applications (such as the recently released Pokemon GO), where one wants to alter the appearance of a single real-world object in an image frame to make it appear as a cartoon. Most notably, the rendering of real-world objects into cartoon characters has been used in a number of films and television show, such as the upcoming series Son of Zorn. We present a method for targeted style transfer that simultaneously segments and stylizes single objects selected by the user. The method uses a Markov random field model to smooth and anti-alias outlier pixels near object boundaries, so that stylized objects naturally blend into their surroundings.
Self-Supervised Spatially Variant PSF Estimation for Aberration-Aware Depth-from-Defocus
Creators: name: Wu, Zhuofeng
name: Monno, Yusuke
name: Okutomi, Masatoshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we address the task of aberration-aware depth-from-defocus (DfD), which takes account of spatially variant point spread functions (PSFs) of a real camera. To effectively obtain the spatially variant PSFs of a real camera without requiring any ground-truth PSFs, we propose a novel self-supervised learning method that leverages the pair of real sharp and blurred images, which can be easily captured by changing the aperture setting of the camera. In our PSF estimation, we assume rotationally symmetric PSFs and introduce the polar coordinate system to more accurately learn the PSF estimation network. We also handle the focus breathing phenomenon that occurs in real DfD situations. Experimental results on synthetic and real data demonstrate the effectiveness of our method regarding both the PSF estimation and the depth estimation.
Willingness to Pay for Cataract Surgery Among Outreach Site Patients in South West Ethiopia: A Cross-Sectional Study
Creators: name: Gessesse GW
Publisher: name: figshare
Year: 2017
Subjects: Diseases

description: Background: Cost recovery for cataract surgery will have significant input towards a sustainable eye care system; therefore it is important to assess the willingness to pay of patients with cataract blindness for cataract surgery. Methods: A cross sectional survey was conducted in two outreach sites in South West Ethiopia to determine their willingness to pay for cataract surgery. Consecutive patients who had mature senile cataract and came to two outreach program sites were included in the study. Results: A total of 134 patients were included in the study. The mean age was 62.5years (SD=9.4). The majority, 86 (64.2 %), were males making the male to female ratio 1.79:1. A total of 102 (76.1%) participants of the study said that they were willing to pay for their cataract surgery. Males were more willing to pay as compared to females (83.7% vs. 62.5%, p=0.006). Those with low socio-economic conditions were less willing to pay (p< 0.05). Willingness to pay was not associated with the age (p= 0.25), literacy (p=0.66), religion (0.3), or family size (0.43) of the participants. On multiple logistic regression analysis, however, only being a female and also having a low socioeconomic status were significantly associated with not willing to pay. Conclusions: A good proportion of the rural residents were willing to pay for their cataract surgery. Being female and having lower socioeconomic status are associated with not willingness to pay.
Yukawa-Lorentz symmetry of interacting non-Hermitian birefringent Dirac fermions
Creators: name: Murshed, Sk Asrap
name: Roy, Bitan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The energy spectra of linearly dispersing gapless spin-3/2 Dirac fermions display birefringence, featuring two effective Fermi velocities, thus breaking the space-time Lorentz symmetry. Here, we consider a non-Hermitian (NH) generalization of this scenario by introducing a masslike anti-Hermitian birefringent Dirac operator to its Hermitian counterpart. At the microscopic level, a generalized $π$-flux square lattice model with imbalance in the hopping amplitudes in the opposite directions among spinless fermions between the nearest-neighbor sites gives rise to pseudospin-3/2 NH Dirac fermions in terms of internal, namely sublattice, degrees of freedom. The resulting NH operator shows real eigenvalue spectra over an extended NH parameter regime, and a combination of non-spatial and discrete rotational symmetries protects the gapless nature of such quasiparticles. However, at the brink of dynamic mass generation, triggered by Hubbardlike local interactions, the birefringent parameter always vanishes under coarse grain due to the Yukawa-type interactions with scalar bosonic order-parameter fluctuations. The resulting quantum critical state is, therefore, described by two decoupled copies of spin-1/2 Dirac fermions with a unique terminal Fermi velocity, which is equal to the bosonic order-parameter velocity, thereby fostering an emergent space-time Lorentz symmetry. Furthermore, depending on the internal algebra between the anti-Hermitian birefringent Dirac operator and the candidate mass order, the system achieves the emergent Yukawa-Lorentz symmetry either by maintaining its non-Hermiticity or by recovering a full Hermiticity. We discuss the resulting quantum critical phenomena and possible microscopic realizations of the proposed scenarios.
description: Published version: 23 Pages, 4 Figures and 2 Tables
A short review on graphonometric evaluation tools in children
Creators: name: Aleman, Belen Esther
name: Diaz, Moises
name: Ferrer, Miguel Angel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Handwriting is a complex task that involves the coordination of motor, perceptual and cognitive skills. It is a fundamental skill for the cognitive and academic development of children. However, the technological, and educational changes in recent decades have affected both the teaching and assessment of handwriting. This paper presents a literature review of handwriting analysis in children, including a bibliometric analysis of published articles, the study participants, and the methods of evaluating the graphonometric state of children. The aim is to synthesize the state of the art and provide an overview of the main study trends over the last decade. The review concludes that handwriting remains a fundamental tool for early estimation of cognitive problems and early intervention. The article analyzes graphonometric evaluation tools. Likewise, it reflects on the importance of graphonometric evaluation as a means to detect possible difficulties or disorders in learning to write. The article concludes by highlighting the need to agree on an evaluation methodology and to combine databases.
Spin self-organization in an optical cavity facilitated by inhomogeneous broadening
Creators: name: Nairn, Marc
name: Giannelli, Luigi
name: Morigi, Giovanna
name: Slama, Sebastian
name: Olmos, Beatriz
name: Jäger, Simon B.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the onset of collective spin-self-organization in a thermal ensemble of driven two-level atoms confined in an optical cavity. The atoms spontaneously form a spin-pattern above a critical driving strength that sets a threshold and is determined by the cavity parameters, the initial temperature, and the transition frequency of the atomic spin. Remarkably, we find that inhomogeneous Doppler broadening facilitates the onset of spin-self-organization. In particular, the threshold is non-monotonic when increasing the spin transition frequency and reaches a minimum when the Doppler broadening is of similar magnitude. This feature emerges due to Doppler-induced resonances. Above the threshold, we find cooperative dynamics of spin, spatial, and momentum degrees of freedom leading to density modulations, fast reduction of kinetic energy, and the emergence of non-thermal states. More broadly, our work demonstrates how broadening can facilitate strong light-matter interactions in many-body systems.
description: Updated with published version. Journal Reference: Phys. Rev. Lett. 134, 083603 (2025)
Audit Analysis Models, Security Frameworks and Their Relevance for VoIP
Creators: name: Gavilanez, Oscar
name: Gavilanez, Franklin
name: Rodriguez, Glen
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: K.6.5

description: Voice over IP (VoIP) is the transmission of voice and multimedia content over Internet Protocol (IP) networks, this paper reviews models, frameworks and auditing standards proposed to this date to manage VoIP security through a literature review, with descriptions of both the historical and philosophical evolution reflecting an adequate knowledge of related research. Three research questions are raised here: RQ1. What are the requirements to be met by a model of security audit in VoIP systems to achieve their goals? RQ2. Today, are there additional attacks that previous works have not considered? RQ3. Which security requirements in the VoIP systems are covered (and which are not covered) by security frameworks? After some discussion about VoIP Protocols, Attacks on VoIP, Information Technology (IT) audit, IT security audits, Frameworks and auditing standards, we present a unified view of VoIP Security Requirements; as well as considering the contributions and disadvantages of frameworks and auditing standards toward achieving those requirements through a comparative evaluation. It was determined that there is no security framework which considers social engineering attacks in spite of being an important aspect to consider in security management VoIP; also there is no specific framework that covers all categories of security requirements for VoIP system, therefore, a more extensive model is needed.
description: 12th International Conference on Cyber Warfare and Security - ICCWS 2017, At Dayton, USA
Reflection Removal Using Recurrent Polarization-to-Polarization Network
Creators: name: Bian, Wenjiao
name: Monno, Yusuke
name: Okutomi, Masatoshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper addresses reflection removal, which is the task of separating reflection components from a captured image and deriving the image with only transmission components. Considering that the existence of the reflection changes the polarization state of a scene, some existing methods have exploited polarized images for reflection removal. While these methods apply polarized images as the inputs, they predict the reflection and the transmission directly as non-polarized intensity images. In contrast, we propose a polarization-to-polarization approach that applies polarized images as the inputs and predicts "polarized" reflection and transmission images using two sequential networks to facilitate the separation task by utilizing the interrelated polarization information between the reflection and the transmission. We further adopt a recurrent framework, where the predicted reflection and transmission images are used to iteratively refine each other. Experimental results on a public dataset demonstrate that our method outperforms other state-of-the-art methods.
Auditory-visual perception of Mandarin lexical tone using 3D display
Creators: name: Dyball, Alyssa
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Research on lexical tone perception has identified patterns of head movements that accompany the production of Mandarin tones. The present study used 3D presentations to investigate whether greater access to depth cues could facilitate tone discrimination in native and non-native tone language listeners (Mandarin and Australian-English). Participants completed a same/different task constructed using syllables /ma/ and /na/, spoken with the 4 Mandarin tones by two different talkers. These syllables were presented in 5 modalities: Audio Only (AO), Two-dimensional AV (2D-AV), Three-dimensional AV (3D-AV), Two-dimensional visual only (2D-VO) and Three-dimensional visual only (3D-VO). Within each modality there were two speech production modes: normal speech and clear speech. Contrary to the hypotheses, performance was similar across AO, 2D- and 3D-AV as well as normal and clear speech conditions; neither 3D presentation nor clear speech improved discrimination. However, performance on the visually salient /ma/ was better than for /na/ suggesting that additional segmental visual information facilitated performance. As expected Mandarin listeners performed better than Australian English listeners. The results highlight inter-talker variation in the production of tone and generate new avenues for study including exploring tone perception with hearing impaired listeners who may rely more on and benefit more from 3D presentation.
Encompassing materials modelling for industry 4.0
Creators: name: Roscioni, Otello Maria
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Semantic web
subject: Condensed matter physics
subject: Data exchange

description: The foundations for tomorrow’s industry lie in digitalising and automating services based on data analytics, robotics, artificial intelligence, cloud services, and widespread connectivity. This transformation promises to improve efficiency, create resilient supply chains, understand weaknesses, foster innovation, and combine all these aspects to promote data-driven business decisions. The underlying force driving this change is the availability of big data. In the context of the manufacturing industry, a crucial part of digitalisation is the integration of materials modelling, that is, computer simulations using numerical models to predict the behaviour of physical systems. Materials modelling provides a practical framework for understanding the properties of complex materials. It can replace experiments in the quest for tailoring the properties of new materials and provide data that can be easily gathered, processed, stored, and retrieved. However, significant barriers still exist to efficiently deploying the most advanced simulation techniques and combining different models in even more complex workflows. This talk will describe an open innovation platform (OIP) developed in the OpenModel project [1] that uses semantic technologies to power a web interface for materials modelling. A fundamental bottleneck to model, for example, a transistor using computer-aided engineering software, is to access reliable properties of materials, which may not be available for new materials. In this case, a good source of synthetic data is electronic-structure calculations, an ab-initio methodology used to compute the properties of condensed matter starting from its atomic composition and structure. Despite this method having a high degree of maturity [2], its use requires specific training, which may hinder its use for industrial users such as engineers and technicians. The OpenModel OIP hides the complexity of materials modelling workflows and makes them a source of reliable data, thus complementing the digital ecosystem of data from experiments and physical sensors. The core functionalities of the OIP will be presented and used to document semantically a workflow to model the electronic properties of an inorganic semiconductor and make them available to commercial software for materials-to-device optimisation, covering materials discovery and maximising the device performance. The OpenModel project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 953167.

References[1] https://open-model.eu/[2] R. Dovesi, B. Civalleri, R. Orlando, C. Roetti, V.R. Saunders; Rev. Comput. Chem., 2005, 21, 1-125.
Kinetic description of Bose-Einstein condensation with test particle simulations
Creators: name: Zhou, Kai
name: Xu, Zhe
name: Zhuang, Pengfei
name: Greiner, Carsten
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a kinetic description of Bose-Einstein condensation for particle systems being out of thermal equilibrium, which may happen for gluons produced in the early stage of ultra-relativistic heavy-ion collisions. The dynamics of bosons towards equilibrium is described by a Boltzmann equation including Bose factors. To solve the Boltzmann equation with the presence of a Bose-Einstein condensate we make further developments of the kinetic transport model BAMPS (Boltzmann Approach of MultiParton Scatterings). In this work we demonstrate the correct numerical implementations by comparing the final numerical results to the expected solutions at thermal equilibrium for systems with and without the presence of Bose-Einstein condensate. In addition, the onset of the condensation in an over-populated gluon system is studied in more details. We find that both expected power-law scalings denoted by the particle and energy cascade are observed in the calculated gluon distribution function at infrared and intermediate momentum regions, respectively. Also, the time evolution of the hard scale exhibits a power-law scaling in a time window, which indicates that the distribution function is approximately self-similar during that time.
description: 15 pages,14 figures
When things speak
Creators: name: Wheeler, Penelope Jane
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: In this study four cases of "speaking things" are investigated, with selections from the "consumables" of everyday, commercial contexts, who demand "Eat me!"; from art history, inscriptions which "speak" to their audience; and from literature, where the participants in two extended narratives, the cross in The dream of the rood and the stone in The story of the stone, project alternative models for human experience. Using analytical tools appropriate to these instances, and supported by literature from these various fields, this study locates these different but overlapping linguistic constructions of objects against the speech role network fundamental to systemic functional linguistics, and outlines the semantic patterns in which these "things" operate. In each case, when things speak, they cross network boundaries and re-shape participant interactions around them: but this investigation shows that these disruptive functions of speaking things do not break but, rather, powerfully strengthen and duplicate the cultural and ideological meanings of these texts.
Casimir Force and its Relation to Surface Tension
Creators: name: Høye, J. S.
name: Brevik, I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: From energy considerations there is reason to expect that the work done by Casimir forces during a slow displacement of the parallel plates reflects the free energy of the surface tension of the adjacent surfaces. We show this explicitly, for a one-component ionic fluid or plasma with $q_c$ as ionic charge, where the particles are neutralized by a uniform continuous oppositely charged background. For two equal half-planes, the surface-associated free energy for one half-plane turns out to be just one half of the total Casimir energy for the conventional Casimir setup. We also comment, from a wider perspective, on the intriguing possibility that knowledge about the magnitude of the surface tension coefficient obtained from statistical mechanics or experiments may give insight into the value of the conventional cutoff time-splitting parameter $τ=t-t'$ occurring in quantum field theory. A simple analysis suggests that the minimal distance $τc$ is of the order of atomic dimensions, which is a physically natural result.
description: 13 pages, no figures. To appear in Phys. Rev. A
Are policy tools and governance modes coupled? Analysing welfare-to-work reform at the frontline
Creators: name: Lewis, Jenny M
name: Nguyen, Phuc
name: Considine, Mark
Publisher: name: La Trobe
Year: 2022
Subjects: classificationCode: 440799
subject: Policy and administration not elsewhere classified
classificationCode: 440899
subject: Political science not elsewhere classified

description: No description supplied