cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evanescent Wave Approximation for Non-Hermitian Hamiltonians
Creators: name: Militello, Benedetto
name: Napoli, Anna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The counterpart of the rotating wave approximation for non-Hermitian Hamiltonians is considered, which allows for the derivation of a suitable effective Hamiltonian for systems with some states undergoing decays. In the limit of very high decay rates, on the basis of this effective description we can predict the occurrence of a quantum Zeno dynamics which is interpreted as the removal of some coupling terms and the vanishing of an operatorial pseudo-Lamb shift.
Per l’edizione del Primo dei Libri medicinales di Aezio Amideno
For the edition of the First of the Libri Medicinales by Aetius of Amida
Creators: name: Calà, Irene <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: L-FIL-LET/07 Civiltà Bizantina

description: La ricerca è dedicata allo studio propedeutico ad una nuova edizione critica del primo dei Libri medicinales di Aezio Amideno, medico vissuto nel VI secolo e attivo alla corte di Costantinopoli. 
Sono stati oggetto principale di studio 35 manoscritti contenenti, in parte o integralmente, il primo libro di Aezio; la collazione ha permesso di individuare numerosi codices descripti  e soprattutto di procedere ad una nuova classificazione dei codici. 
Riguardo alla modalità di utilizzo delle fonti da parte di Aezio si è potuto non solo accertare l’uso indiretto del testo galenico ed escludere la mediazione di Oribasio, ma sono state individuate nuove fonti, oltre a quelle tradizionalmente conosciute. 
Per la prima volta sono stati presi in esame sia il commento di Cristobal de Horozco  ai sedici libri di Aezio che la traduzione latina di Giovanbattista Montano. 
Presente è infine un saggio di edizione dei capitoli 1-10 e 124 dell’edizione Olivieri, il testo proposto presenta significative differenze rispetto a quello edito nel CMG.
description: The research is a preparatory study for the new critical edition of the first of the Libri Medicinales by Aetius of Amida,
a doctor at Costantinople’s court in the 6th century B.C.
Thirty-five manuscripts have been studied, either partially or fully containing Aetius’ first book; their collation has led to the identification of several codices descripti and to a new codex classification.
Concerning the use of sources by Aetius, not only the indirect use of Galen has been confirmed whereas Oribasius’ has been ruled out, but also new sources have been identified. 
For the first time both Cristobal de Horozco’s commentary to Aetius’ 16 books and Giovanbattista Montano’s latin translation have been taken into consideration.
Finally, a sample of the edition of chapters1to 10 and 124 of Olivieri’s edition is proposed, with significant differences compared to the text in CMG.
Bioetica femminista ed etica della cura: un approccio alle questioni di fine vita
Feminist Bioethics and The Ethics of Care: Approaching End-of-Life Issues
Creators: name: Tarchini, Luisa <1983>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: IUS/20 Filosofia del diritto

description: Scopo di tale lavoro è indagare la valenza dell'etica femminista e dell'etica della cura all'interno del campo della bioetica, in particolar modo rispetto ai dilemmi morali attinenti alle questioni di fine vita. Nell'intento di far emergere l'importanza dell'approccio femminista alla bioetica, ci occuperemo inizialmente dell'analisi dell'etica femminista, individuando i tratti caratteristici e le peculiarità proprie di tale pensiero. Secondariamente illustreremo la nascita dell'etica della cura e tratteremo delle differenti correnti che la costituiscono, al fine di mettere in evidenza le caratteristiche principali ascrivibili al pensiero della cura di tipo femminista. Dopo aver preso in considerazione l'etica femminista e l'etica della cura, esamineremo in che termini il concetto di autonomia possa essere interpretato dalla riflessione femminista nel suo complesso, cominciando a riflettere intorno al ruolo che l'etica della cura e l'etica femminista possono avere all'interno del campo della bioetica. In tal senso, prenderemo in esame le caratteristiche e gli obiettivi della bioetica femminista, soffermandoci ad indagare l'apporto che l'approccio femminista può fornire alla discussione intorno alle questioni di fine vita. Al riguardo, esamineremo in che modo l'etica femminista e l'etica della cura possano espandere il discorso bioetico intorno al fine vita, vagliando i timori e le preoccupazioni espresse dalla riflessione femminista e considerando i nuovi scenari e le nuove prospettive tracciate dall'etica della cura.
description: The focus of this work is about feminist ethics, the ethics of care and the importance of feminist bieothics respect on end-of-life issues. Our aim is to analyse feminist ethics and the ethics of care in order to broader the discussion about feminist bioethics. To deepen the reflection about the value of feminist ethics and the ethics of care inside bioethics, we will examine the feminist perspective about end-of life issue, in particular we will discuss about autonomy and physician assisted suicide.
Implementation strategies for hyperspectral unmixing using Bayesian source separation
Creators: name: Schmidt, Frederic
name: Schmidt, Albrecht
name: Treguier, Erwan
name: Guiheneuf, Mael
name: Moussaoui, Said
name: Dobigeon, Nicolas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Bayesian Positive Source Separation (BPSS) is a useful unsupervised approach for hyperspectral data unmixing, where numerical non-negativity of spectra and abundances has to be ensured, such in remote sensing. Moreover, it is sensible to impose a sum-to-one (full additivity) constraint to the estimated source abundances in each pixel. Even though non-negativity and full additivity are two necessary properties to get physically interpretable results, the use of BPSS algorithms has been so far limited by high computation time and large memory requirements due to the Markov chain Monte Carlo calculations. An implementation strategy which allows one to apply these algorithms on a full hyperspectral image, as typical in Earth and Planetary Science, is introduced. Effects of pixel selection, the impact of such sampling on the relevance of the estimated component spectra and abundance maps, as well as on the computation times, are discussed. For that purpose, two different dataset have been used: a synthetic one and a real hyperspectral image from Mars.
description: 10 pages, 6 figures, submitted to IEEE Transactions on Geoscience and Remote Sensing in the special issue on Hyperspectral Image and Signal Processing (WHISPERS)
Search for pairs and groups in the 2006 Geminid meteor shower
Creators: name: Koten, Pavel
name: Čapek, David
name: Spurný, Pavel
name: Štork, Rostislav
name: Vojáček, Vlastimil
name: Bednář, Jan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The question of the existence of pairs and groups among the meteor showers is opened for a long time. The double station video observation of the 2006 Geminid meteor shower, one of the most active annual showers, is used for the search of such events. The atmospheric trajectories of the observed meteors, photometric masses, and both time and spatial distances of meteoroids in the atmosphere were determined using a double station video observation. Time gaps among them were analysed statistically. The Monte Carlo simulation was used for the determination of the probability of random pairings. Higher than expected number of candidates for pairs was found among 2006 Geminids. Evaluation of Poisson distribution shows that a significant fraction of them may be real cases. However, the Monte Carlo simulation did not confirm this result and provided a different view. Analysis of geometrical positions of candidate pairs also did not support the presence of real pairs and groups. Although we cannot exclude that some of them may be physically connected pairs, all the observed cases can be explained as the coincidental appearance of unrelated meteors.
description: 8 pages, 7 figures, 3 tables, accepted for publication in A&A
Paesaggi monastici nel Ravennate tra fonti scritte e dati archeologici (VIII – XIII secolo)
Monastic Landscapes in Ravenna between written sources and archaeological records (VIII – XIII century)
Creators: name: Bondi, Mila <1973>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: M-STO/01 Storia medievale

description: Il progetto di ricerca ha come oggetto di studio cinque monasteri ravennati (urbani e suburbani, maschili e femminili) di cui si volevano conoscere le strutture monastiche, le dotazioni patrimoniali (di cui è stata effettuata la mappatura) e le forme di economia sviluppate, utilizzando le fonti scritte provenienti dagli archivi monastici e i dati archeologici disponibili. Nello specifico, i monasteri selezionati (da intendersi come sede di monaci organizzati secondo una Regola) sono: Sant’Apollinare in Classe, San Severo, Santa Maria in cereseo, San Martino post ecclesiam maiorem, Sant’Andrea maggiore. L’arco cronologico preso in esame è compreso tra il secolo VIII e il XIII.
Dall’elaborazione dei dati si è tentato di ricostruire la storia della comunità monastica così come è deducibile dalle fonti scritte, di conoscere le strutture dei monasteri e delle loro dipendenze, in base alle informazioni desumibili dalle fonti scritte, dagli scavi archeologici quando disponibili e dalle fonti iconografiche, di comprendere la formazione dei patrimoni monastici, la loro gestione e il ruolo svolto dai monasteri nel territorio in cui si concentravano i beni e di ricostruire il contesto naturale e le forme insediative in cui tali beni erano inseriti.
description: The object of the research is the study of five monasteries (urban and suburban, male and female) in the area of Ravenna. The aim was to understand the nature of monastic buildings, endowments (which have been mapped) and economic activities, using written sources from monastic archives and archaeological records.
The monasteries chosen were: Sant’Apollinare in Classe and San Severo (both male and set in Classe), Santa Maria in Cereseo, San Martino post Ecclesiam maiorem, Sant’Andrea maggiore, which are all set in Ravenna and female.
The history of the each monastery was reconstructed in order to know the monastic buildings and their annexes in the territory (using also iconographical and cartographical sources), as well as to understand how  monastic community formed their endowments, which was the assets administration, which role monasteries performed in the territory where their estates were concentrated, and also to reconstruct the environment and settlement shapes where those properties were set.
A class of Rényi information estimators for multidimensional densities
Creators: name: Leonenko, Nikolai
name: Pronzato, Luc
name: Savani, Vippal
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: A class of estimators of the Rényi and Tsallis entropies of an unknown distribution $f$ in $\mathbb{R}^m$ is presented. These estimators are based on the $k$th nearest-neighbor distances computed from a sample of $N$ i.i.d. vectors with distribution $f$. We show that entropies of any order $q$, including Shannon's entropy, can be estimated consistently with minimal assumptions on $f$. Moreover, we show that it is straightforward to extend the nearest-neighbor method to estimate the statistical distance between two distributions using one i.i.d. sample from each. (Wit Correction.)
description: Published in at http://dx.doi.org/10.1214/07-AOS539 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
A high performance likelihood reconstruction of gamma-rays for Imaging Atmospheric Cherenkov Telescopes
Creators: name: de Naurois, Mathieu
name: Rolland, Loic
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a sophisticated gamma-ray likelihood reconstruction technique for Imaging Atmospheric Cerenkov Telescopes. The technique is based on the comparison of the raw Cherenkov camera pixel images of a photon induced atmospheric particle shower with the predictions from a semi-analytical model. The approach was initiated by the CAT experiment in the 1990's, and has been further developed by a new fit algorithm based on a log-likelihood minimisation using all pixels in the camera, a precise treatment of night sky background noise, the use of stereoscopy and the introduction of first interaction depth as parameter of the model. The reconstruction technique provides a more precise direction and energy reconstruction of the photon induced shower compared to other techniques in use, together with a better gamma efficiency, especially at low energies, as well as an improved background rejection. For data taken with the H.E.S.S. experiment, the reconstruction technique yielded a factor of ~2 better sensitivity compared to the H.E.S.S. standard reconstruction techniques based on second moments of the camera images (Hillas Parameter technique).
description: 43 pages, 33 figures, Astroparticle Physics 32 (2009) Fixed typos in equations 11 and 14
Frequency shift of light emitted from growing and shrinking black holes
Creators: name: Guzman, F. S.
name: Alvarez-Rios, I.
name: Gonzalez, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper we present a method to study the frequency shift of signals sent from near a Schwarzschild black hole that grows or shrinks through accretion. We construct the numerical solution of Einstein's equations sourced by a spherical shell of scalar field, with positive energy density to simulate the growth and with negative energy density to simulate the shrink of the black hole horizon. We launch a distribution of null rays at various time slices during the accretion and estimate their energy along their own trajectories. Spatially the bundles of photons are distributed according to the distribution of dust, whose dynamics obeys Euler equations in the test field limit during the evolution of the black hole. With these elements, we construct the frequency shift of photons during the accretion process of growth or contraction of the hole, which shows a variability that depends on the thickness of the scalar field shell or equivalently the time scale of the accretion.
description: 11 pages, 9 figures. Accepted for publication in Phys. Rev. D
The Complexity of Infinite Computations In Models of Set Theory
Creators: name: Finkel, Olivier
Publisher: name: arXiv
Year: 2009
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Computational Complexity (cs.CC)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.1.1; F.1.3; F.4.1; F.4.3

description: We prove the following surprising result: there exist a 1-counter Büchi automaton and a 2-tape Büchi automaton such that the ω-language of the first and the infinitary rational relation of the second in one model of ZFC are π_2^0-sets, while in a different model of ZFC both are analytic but non Borel sets. This shows that the topological complexity of an ω-language accepted by a 1-counter Büchi automaton or of an infinitary rational relation accepted by a 2-tape Büchi automaton is not determined by the axiomatic system ZFC. We show that a similar result holds for the class of languages of infinite pictures which are recognized by Büchi tiling systems. We infer from the proof of the above results an improvement of the lower bound of some decision problems recently studied by the author.
Novel Multifunctional Materials Based on Oxide Thin Films and Artificial Heteroepitaxial Multilayers
Creators: name: Opel, Matthias
name: Gepraegs, Stephan
name: Menzel, Edwin P.
name: Nielsen, Andrea
name: Reisinger, Daniel
name: Nielsen, Karl-Wilhelm
name: Brandlmaier, Andreas
name: Czeschka, Franz D.
name: Althammer, Matthias
name: Weiler, Mathias
name: Goennenwein, Sebastian T. B.
name: Simon, Juergen
name: Svete, Matthias
name: Yu, Wentao
name: Huehne, Sven-Martin
name: Mader, Werner
name: Gross, Rudolf
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Transition metal oxides show fascinating physical properties such as high temperature superconductivity, ferro- and antiferromagnetism, ferroelectricity or even multiferroicity. The enormous progress in oxide thin film technology allows us to integrate these materials with semiconducting, normal conducting, dielectric or non-linear optical oxides in complex oxide heterostructures, providing the basis for novel multi-functional materials and various device applications. Here, we report on the combination of ferromagnetic, semiconducting, metallic, and dielectric materials properties in thin films and artificial heterostructures using laser molecular beam epitaxy. We discuss the fabrication and characterization of oxide-based ferromagnetic tunnel junctions, transition metal-doped semiconductors, intrinsic multiferroics, and artificial ferroelectric/ferromagetic heterostructures - the latter allow for the detailed study of strain effects, forming the basis of spin-mechanics. For characterization we use X-ray diffraction, SQUID magnetometry, magnetotransport measurements, and advanced methods of transmission electron microscopy with the goal to correlate macroscopic physical properties with the microstructure of the thin films and heterostructures.
description: 21 pages, 21 figures (2 figures added, typos corrected)
Analytical study on the trade relations between the People’s Republic of China and Hong Kong
Creators: name: Liu, Francis King-Yin
Publisher: name: University of British Columbia
Year: 2010

description: This study will examine the trade relations between the People's Republic of China (P.R.C.) and Hong Kong, hypothesizing that the future trade relationship with each other will be maintained and will not be changed in the near future due to the P.R.C.'s need for foreign exchange and Hong Kong's need for foodstuffs. It is further hypothesized that this economic coexistence situation will continue to exist regardless of the P.R.C.'s direct trade with the West. First, a description and analysis of the growth and development of the P.R.C.'s foreign trade with Hong Kong will be presented. Second, the role of Hong Kong's trade with the P.R.C. and their trade relationship will be evaluated. Lastly, opinions and insights will be given regarding the potential trade relationship between the P.R.C. and Hong Kong in the near future. Hong Kong's present significance in the P.R.C.'s trade is the role she plays as a major source of foreign exchange for the P.R.C, which is the result of the trade imbalance and the remittance from overseas Chinese. As the P.R.C. continues to do more business with the West, she has to obtain more foreign exchange to fulfill the payments. Therefore, the tie between the two trade partners is expected to strengthen and will not be changed in the foreseeable future.
Label it be! A large-scale study of issue labeling in modern open-source repositories
Creators: name: Júnior, Joselito
name: Boechat, Gláucya
name: Machado, Ivan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In a wave of growth, open-source projects need to modernize and change how they deal with processes, methods, and communication with their contributors. We could observe that open-source projects are constantly evolving to improve their management of the entire community. Starting with community communication, software development, managing open-source projects faces crucial challenges. One of the enabling environments that open-source communities found to achieve community communications objectives was code repositories with integration with issue trackers. Using issue trackers in their projects should encompass an infrastructure capable of hosting the project source code and community participation. Some issue trackers use a structure in which the issue's title and description are the key information. However, we have observed a slight change in this strategy over the years, as more and more data are fundamental to solving the issue. For example, labeling the issues could enable users to provide the issue with more contextual information. By understanding how modern issue trackers handle issue labeling, this study analyzes the impact, engagement, and influence that labels have on the Github repositories, based on a database of 10,673,459 issues mined from 13,280 repositories in 180 Github featured topics. We found that 78.75\% of the repositories label their issues, with more adherence from those repositories that contain big numbers of issues. The labeling practice is essential and prioritized as a first step in the issue resolution process in 65.91\% of the first events. Issues with labels draw more attention and impact by collecting more subscribers, assigns, and comments, helping to engage contributors to the resolution.
Automated Aerial Animal Detection When Spatial Resolution Conditions Are Varied
Creators: name: Brown, Jasper
name: Qiao, Yongliang
name: Clark, Cameron
name: Lomax, Sabrina
name: Rafique, Khalid
name: Sukkarieh, Salah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Knowing where livestock are located enables optimized management and mustering. However, Australian farms are large meaning that many of Australia's livestock are unmonitored which impacts farm profit, animal welfare and the environment. Effective animal localisation and counting by analysing satellite imagery overcomes this management hurdle however, high resolution satellite imagery is expensive. Thus, to minimise cost the lowest spatial resolution data that enables accurate livestock detection should be selected. In our work, we determine the association between object detector performance and spatial degradation for cattle, sheep and dogs. Accurate ground truth was established using high resolution drone images which were then downsampled to various ground sample distances (GSDs). Both circular and cassegrain aperture optics were simulated to generate point spread functions (PSFs) corresponding to various optical qualities. By simulating the PSF, rather than approximating it as a Gaussian, the images were accurately degraded to match the spatial resolution and blurring structure of satellite imagery. Two existing datasets were combined and used to train and test a YoloV5 object detection network. Detector performance was found to drop steeply around a GSD of 0.5m/px and was associated with PSF matrix structure within this GSD region. Detector mAP performance fell by 52 percent when a cassegrain, rather than circular, aperture was used at a 0.5m/px GSD. Overall blurring magnitude also had a small impact when matched to GSD, as did the internal network resolution. Our results here inform the selection of remote sensing data requirements for animal detection tasks, allowing farmers and ecologists to use more accessible medium resolution imagery with confidence.
description: 20 pages, 9 figures, 4 tables in appendix
Blindness (Diabetic Retinopathy) Severity Scale Detection
Creators: name: Bygari, Ramya
name: Naik, Rachita
name: P, Uday Kumar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Diabetic retinopathy (DR) is a severe complication of diabetes that can cause permanent blindness. Timely diagnosis and treatment of DR are critical to avoid total loss of vision. Manual diagnosis is time consuming and error-prone. In this paper, we propose a novel deep learning based method for automatic screening of retinal fundus images to detect and classify DR based on the severity. The method uses a dual-path configuration of deep neural networks to achieve the objective. In the first step, a modified UNet++ based retinal vessel segmentation is used to create a fundus image that emphasises elements like haemorrhages, cotton wool spots, and exudates that are vital to identify the DR stages. Subsequently, two convolutional neural networks (CNN) classifiers take the original image and the newly created fundus image respectively as inputs and identify the severity of DR on a scale of 0 to 4. These two scores are then passed through a shallow neural network classifier (ANN) to predict the final DR stage. The public datasets STARE, DRIVE, CHASE DB1, and APTOS are used for training and evaluation. Our method achieves an accuracy of 94.80% and Quadratic Weighted Kappa (QWK) score of 0.9254, and outperform many state-of-the-art methods.
description: 7 pages, 7 figures, 2021 8th Swiss Conference on Data Science (SDS)
Simulation of integrated hydro-electric & thermal plant systems using GPSSV
Creators: name: Riley, William V.
Publisher: name: University of British Columbia
Year: 2010

description: This thesis demonstrates the utility of computer simulation in the modelling of hydro-electric and thermal plant operations. It focuses on models of selected facilities in the British Columbia Hydro and Power Authority's integrated system. Four different simulation models are developed. Each successive model develops a variation of the basic program to accommodate the different hydro-electric and thermal plant configurations. When more than one energy producing facility is included in a particular simulation, they are operated on a coordinated basis. The purpose of the models is to assess the energy producing capabilities of alternative configurations. Two types of experiments are performed on the models: model configuration and operating coordinating policy. In terms of the hydro-electric facilities, the scope of the models extends from the simulation of river inflows to reservoirs, through the energy generation phase, to the resultant down river flow. Generally, thermal plant operation is a function of reservoir status. The IBM GPSSV computer language is used in the modelling process. By considering the simulation output over the two types of experiments, it is possible to draw conclusions concerning the ability of certain facility configurations to meet specified energy demands. These conclusions can facilitate B.C. Hydro in the management of its integrated system with respect to planning the construction of new facilities and establishing coordinating-operating policies. Additionally, the value of using GPSSV in the modelling process is discussed.
Is PKS 0625-354 another variable TeV active galactic nucleus?
Creators: name: Glawion, Dorit
name: Wierzcholska, Alicja
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The majority of the active galactic nuclei (AGN) detected at very-high-energies above 100 GeV belong to the class of blazars with a small angle between the jet-axis and the line-of-sight. Only about 10 percent of the gamma-ray AGN are objects with a larger viewing angle resulting in a smaller Doppler boosting of the emission. Originally, it was believed that gamma-ray emission can only be observed from blazars and those are variable in its brightness. Instead, the last years have shown that non-blazar active galaxies also show a fascinating variability behaviour which provide important new insights into the physical processes responsible for the gamma-ray production and especially for flaring events. Here, we report on the observation of gamma-ray variability of the active galaxy PKS 0625-354 detected with the H.E.S.S. telescopes in November 2018. The classification of PKS 0625-354 is a still matter of debate. The H.E.S.S. measurements were performed as part of a flux observing program and showed in the first night of the observation a detection of the object with >5sigma. A denser observation campaign followed for the next nine nights resulting in a decrease of the gamma-ray flux. Those observations were accompanied with Swift in the X-ray and UV/optical band allowing for the reconstruction of a multi-band broad-band spectral energy distribution. We will discuss the implications of the gamma-ray variability of the object.
description: Proceedings of the 37th International Cosmic Ray Conference (ICRC 2021)
The rank of diluted random graphs
Creators: name: Bordenave, Charles
name: Lelarge, Marc
name: Salez, Justin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We investigate the rank of the adjacency matrix of large diluted random graphs: for a sequence of graphs $(G_n)_{n\geq0}$ converging locally to a Galton--Watson tree $T$ (GWT), we provide an explicit formula for the asymptotic multiplicity of the eigenvalue 0 in terms of the degree generating function $ϕ_*$ of $T$. In the first part, we show that the adjacency operator associated with $T$ is always self-adjoint; we analyze the associated spectral measure at the root and characterize the distribution of its atomic mass at 0. In the second part, we establish a sufficient condition on $ϕ_*$ for the expectation of this atomic mass to be precisely the normalized limit of the dimension of the kernel of the adjacency matrices of $(G_n)_{n\geq 0}$. Our proofs borrow ideas from analysis of algorithms, functional analysis, random matrix theory and statistical physics.
description: Published in at http://dx.doi.org/10.1214/10-AOP567 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Conformally covariant quantization of Maxwell field in de Sitter space
Creators: name: Faci, S.
name: Huguet, E.
name: Queva, J.
name: Renaud, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this article, we quantize the Maxwell ("massless spin one") de Sitter field in a conformally invariant gauge. This quantization is invariant under the SO$_0(2,4)$ group and consequently under the de Sitter group. We obtain a new de Sitter invariant two-points function which is very simple. Our method relies on the one hand on a geometrical point of view which uses the realization of Minkowski, de Sitter and anti-de Sitter spaces as intersections of the null cone in $\setR^6$ and a moving plane, and on the other hand on a canonical quantization scheme of the Gupta-Bleuler type.
description: v2 is is the definitive (improved compare to v1) version
Psoriasis as netopathy. Model of pathogenesis with unique netosis role. Supplements at monograph.
Creators: name: Peslyak, Mikhail
name: Korotky, Nikolay
Publisher: name: Zenodo
Year: 2021
Subjects: bacterial DNA
bacterial products
cytokines
dendritic cells
innate and adaptive response
keratinocytes
kPAMP-carriage
lipopolysaccharide
microbiome
model of pathogenesis
muramyl dipeptide
netosis
neutrophils
PAMP-nemia
peptidoglycan
phagocytes
psoriagenic bacteria
psoriasis
small intestine permeability
systemic psoriatic process
T-lymphocytes

description: Creative Commons License CC-BY-NC-ND.

 This is Supplements to "Psoriasis as netopathy. Model of pathogenesis with unique netosis role."
 (10.5281/zenodo.4483169).

 There is Russian original of this text: 10.5281/zenodo.4310082

 Content A1. Small intestine permeability at psoriasis.
 A2. Small intestine microbiome at healthy persons, SIBO (without psoriasis) and psoriasis.
 A2.1. Small intestine microbiome (culture).
 A2.2. Small intestine microbiome (works of specialists from Ulyanovsk).
 A2.3. Helicobacter pylori, SIBO and psoriasis.
 A2.4. TLR4-activity of LPS.
 A2.5. Antibiotic treatment.
 A2.6. Role of fecal microbiome. Ileocecal valve dysfunction.
 A2.7. Small intestine metagenome. Compartaments and composition.
 A2.8. REIMAGINE study.
 A2.9. Risk factors of SIBO.
 A3. Bile acids role at psoriasis. Study results.
 A4. PAMP-nemia and other changes in blood at psoriasis.
 A5. Definition of concept of PAMP-loads on phagocytes.
 A6. Pharynx microbiome at psoriasis. Study results.
 A7. Bacterial metagenome of skin.
 A8. Comparison Y-model and YN-model.
 A9. Development phases of psoriatic plaque.
 Phase N0. Prepsoriasis. Y-priming.
 Phase N1. Prepsoriasis. Marker – homeostatic L1.
 Phase N2. Prepsoriasis. Markers - L2 and L3r.
 Phase N3. Prepsoriasis. Markers - L2 and L3.
 Phase N4. Prepsoriasis. Markers – L2, L3 and L4.
 Phase N5. Psoriasis. Markers – L2, L3 and L8.
 Phase N6. Prepsoriasis. Marker - L3.
 Phase N7. Prepsoriasis. Markers – L3 and L4.
 Phase N8. Psoriasis. Markers L3 and self-sufficient L8.
 Phases. Additions.
 A10. Bacterial products with chemokine properties and AMP.
 A11. Bacterial products and AMP with chemokine properties, and also their ligands - chemokine receptors, involved in traffic of neutrophils and PDC.
 A12. Chemokines and their ligands - chemokine receptors, involved in traffic of neutrophils. 35
 A13. Cytokines which are actively secreted by immunocytes in dermis.
 A14. Figures in supplements
 A15. Bibliography of supplements.
ESCC-TME-raw
Creators: name: 袁静楠(Jingnan Yuan)
Publisher: name: CNGB
Year: 2025
Subjects: Exome
Monoisolate
Medical

description: Overall survival (OS) benefits of neoadjuvant immunotherapy remain elusive in locally advanced esophageal squamous cell carcinomas (ESCC). Here we reported the results of a phase Ib trial of neoadjuvant PD-L1 blockade with adebrelimab in resectable ESCC. Patients received two neoadjuvant doses of adebrelimab followed by surgery. The primary endpoints were safety and feasibility, secondary endpoint included pathologic complete response (pCR) and OS. Of 30 patients enrolled, 25 patients underwent successful resection without surgery delay and 24% had major pathologic responses including pCR of 8%. The common treatment-related adverse events were anorexia (32%) and fatigue (16%), without grade 3 or more adverse events. The 2-year OS was 92%. Responsive patients had an immune-enriched tumor microenvironment phenotype, whereas nonresponsive patients had greater infiltration of cancer-associated fibroblasts at baseline. Clonotypic dynamics of pre-existing intratumoral T cells was hallmark of responsive patients. These findings provide a rational for neoadjuvant anti-PD-L1 monotherapy as a therapeutic strategy for patients with resectable ESCC.
Nanoscale-electrical and optical properties of iii-nitrides
Creators: name: Minj, Albert <1986>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: FIS/03 Fisica della materia

description: III-nitrides are wide-band gap materials that have applications in both electronics and optoelectronic devices. Because to their inherent strong polarization properties, thermal stability and higher breakdown voltage in Al(Ga,In)N/GaN heterostructures, they have emerged as strong candidates for high power high frequency transistors. Nonetheless, the use of (Al,In)GaN/GaN in solid state lighting has already proved its success by the commercialization of light-emitting diodes and lasers in blue to UV-range. However, devices based on these heterostructures suffer problems associated to structural defects. This thesis primarily focuses on the nanoscale electrical characterization and the identification of these defects, their physical origin and their effect on the electrical and optical properties of the material. Since, these defects are nano-sized, the thesis deals with the understanding of the results obtained by nano and micro-characterization techniques such as atomic force microscopy(AFM), current-AFM, scanning kelvin probe microscopy (SKPM), electron beam induced current (EBIC) and scanning tunneling microscopy (STM). This allowed us to probe individual defects (dislocations and cracks) and unveil their electrical properties. Taking further advantage of these techniques,conduction mechanism in two-dimensional electron gas heterostructures was well understood and modeled. Secondarily, origin of photoluminescence was deeply investigated. Radiative transition related to confined electrons and photoexcited holes in 2DEG heterostructures was identified and many body effects in nitrides under strong optical excitations were comprehended.
A Quantum Algorithm to Calculate Band Structure at the EOM Level of Theory
Creators: name: Fan, Yi
name: Liu, Jie
name: Li, Zhenyu
name: Yang, Jinlong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Band structure is a cornerstone to understand electronic properties of materials. Accurate band structure calculations using a high-level quantum-chemistry theory can be computationally very expensive. It is promising to speed up such calculations with a quantum computer. In this study, we present a quantum algorithm for band structure calculation based on the equation-of-motion (EOM) theory. First, we introduce a new variational quantum eigensolver algorithm named ADAPT-C for ground-state quantum simulation of solids, where the wave function is built adaptively from a complete set of anti-Hermitian operators. Then, on top of the ADAPT-C ground state, quasiparticle energies and the band structure can be calculated using the EOM theory in a quantum-subspace-expansion (QSE) style, where the projected excitation operators guarantee that the killer condition is satisfied. As a proof of principle, such an EOM-ADAPT-C protocol is used to calculate the band structures of silicon and diamond using a quantum computer simulator.
comparing mNGS with CMT for the identification of pathogens in patients with severe infections
Creators: name: 侯菲(Hou Fei)
Publisher: name: CNGB
Year: 2025
Subjects: Genome sequencing
Other
pathogens
微生物检测

description: A retrospective analysis comparing metagenomic next-generation sequencing with conventional microbiology testing for the identification of pathogens in patients with severe infections
Nonnormal approximation by Stein's method of exchangeable pairs with application to the Curie--Weiss model
Creators: name: Chatterjee, Sourav
name: Shao, Qi-Man
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let $(W,W')$ be an exchangeable pair. Assume that \[E(W-W'|W)=g(W)+r(W),\] where $g(W)$ is a dominated term and $r(W)$ is negligible. Let $G(t)=\int_0^tg(s)\,ds$ and define $p(t)=c_1e^{-c_0G(t)}$, where $c_0$ is a properly chosen constant and $c_1=1/\int_{-\infty}^{\infty}e^{-c_0G(t)}\,dt$. Let $Y$ be a random variable with the probability density function $p$. It is proved that $W$ converges to $Y$ in distribution when the conditional second moment of $(W-W')$ given $W$ satisfies a law of large numbers. A Berry-Esseen type bound is also given. We use this technique to obtain a Berry-Esseen error bound of order $1/\sqrt{n}$ in the noncentral limit theorem for the magnetization in the Curie-Weiss ferromagnet at the critical temperature. Exponential approximation with application to the spectrum of the Bernoulli-Laplace Markov chain is also discussed.
description: Published in at http://dx.doi.org/10.1214/10-AAP712 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Thermodynamic origin of quantum time-energy uncertainty relation
Creators: name: Roupas, Zacharias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The problem of time is a notable obstacle towards the recognition of quantum theory as the ultimate fundamental description of nature. Quantum theory may not be complete if founded upon classical notions. Louis de Broglie, seeming to be more or less convinced about the ontology of his proposed matter waves, tried to develop a theory of sub-quantum degrees of freedom relying on statistical thermodynamics. He realized a quantum particle as a fluctuating dense corpuscle formed via non-linear effects from a sub-quantum medium. A wave on the medium guides the vibrating corpuscle. He argued that an intrinsic clock of a quantum particle is related to its Brownian motion at the sub-quantum level. This led him to conjecture a relation between the de Broglie clock frequency $m c^2/h$ and its implicit temperature, which equals that of the surrounding sub-quantum medium. About the same time, Mandelbrot was the first to derive in a classical setting a thermodynamic uncertainty relation between energy and temperature, that was, coincidentally or not, anticipated by Bohr and Heisenberg in the first years of development of quantum theory. We show here that, when the de Broglie temperature-time conjecture is assumed, the thermodynamic temperature-energy uncertainty relation leads to the quantum time-energy uncertainty relation.
A Temperature and Abundance Retrieval Method for Exoplanet Atmospheres
Creators: name: Madhusudhan, N.
name: Seager, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a new method to retrieve molecular abundances and temperature profiles from exoplanet atmosphere photometry and spectroscopy. We run millions of 1D atmosphere models in order to cover the large range of allowed parameter space, and present error contours in the atmospheric properties, given the data. In order to run such a large number of models, we have developed a parametric pressure-temperature (P-T) profile coupled with line-by-line radiative transfer, hydrostatic equilibrium, and energy balance, along with prescriptions for non-equilibrium molecular composition and energy redistribution. We apply our temperature and abundance retrieval method to the atmospheres of two transiting exoplanets, HD 189733b and HD 209458b, which have the best available Spitzer and HST observations. For HD 189733b, we find efficient day-night redistribution of energy in the atmosphere, and molecular abundance constraints confirming the presence of H2O, CO, CH4, and CO2. For HD 209458b, we confirm and constrain the day-side thermal inversion in an average 1D temperature profile. We also report independent detections of H$_2$O, CO, CH$_4$ and CO$_2$ on the dayside of HD 209458b, based on six-channel Spitzer photometry. We report constraints for HD 189733b due to individual data sets separately; a few key observations are variable in different data sets at similar wavelengths. Moreover, a noticeably strong carbon dioxide absorption in one data set is significantly weaker in another. We must, therefore, acknowledge the strong possibility that the atmosphere is variable, both in its energy redistribution state and in the chemical abundances.
description: 20 pages in emulateapj format, 11 figures. Final version, after proof corrections
Knowing When to Quit: Selective Cascaded Regression with Patch Attention for Real-Time Face Alignment
Creators: name: Shapira, Gil
name: Levy, Noga
name: Goldin, Ishay
name: Jevnisek, Roy J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Facial landmarks (FLM) estimation is a critical component in many face-related applications. In this work, we aim to optimize for both accuracy and speed and explore the trade-off between them. Our key observation is that not all faces are created equal. Frontal faces with neutral expressions converge faster than faces with extreme poses or expressions. To differentiate among samples, we train our model to predict the regression error after each iteration. If the current iteration is accurate enough, we stop iterating, saving redundant iterations while keeping the accuracy in check. We also observe that as neighboring patches overlap, we can infer all facial landmarks (FLMs) with only a small number of patches without a major accuracy sacrifice. Architecturally, we offer a multi-scale, patch-based, lightweight feature extractor with a fine-grained local patch attention module, which computes a patch weighting according to the information in the patch itself and enhances the expressive power of the patch features. We analyze the patch attention data to infer where the model is attending when regressing facial landmarks and compare it to face attention in humans. Our model runs in real-time on a mobile device GPU, with 95 Mega Multiply-Add (MMA) operations, outperforming all state-of-the-art methods under 1000 MMA, with a normalized mean error of 8.16 on the 300W challenging dataset.
description: Accepted to the 29th ACM International Conference on Multimedia (MM 21)
Strain-relaxed GeSn-on-Insulator (GeSnOI) microdisks
Creators: name: Burt, Daniel
name: Joo, Hyo-Jun
name: Jung, Yongduck
name: Kim, Youngmin
name: Huang, Yi-Chiau
name: Nam, Donguk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: GeSn alloys offer a promising route towards a CMOS compatible light source and the realization of electronic-photonic integrated circuits. One tactic to improve the lasing performance of GeSn lasers is to use a high Sn content, which improves the directness. Another popular approach is to use a low to moderate Sn content with either compressive strain relaxation or tensile strain engineering, but these strain engineering techniques generally require optical cavities to be suspended in air, which leads to poor thermal management. In this work, we develop a novel dual insulator GeSn-on-insulator (GeSnOI) material platform that is used to produce strain-relaxed GeSn microdisks stuck on a substrate. By undercutting only one insulating layer (i.e., Al2O3), we fabricate microdisks sitting on SiO2, which attain three key properties for a high-performance GeSn laser: removal of harmful compressive strain, decent thermal management, and excellent optical confinement. We believe that an increase in the Sn content of GeSn layers on our platform can allow achieving improved lasing performance.
description: 9 pages, 5 Figures, Journal paper