cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Feedback Control: How to use Verification Theorems and Viscosity Solutions to Find Optimal Protocols
Creators: name: Jacobs, Kurt
name: Shabani, Alireza
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: While feedback control has many applications in quantum systems, finding optimal control protocols for this task is generally challenging. So-called "verification theorems" and "viscosity solutions" provide two useful tools for this purpose: together they give a simple method to check whether any given protocol is optimal, and provide a numerical method for finding optimal protocols. While treatments of verification theorems usually use sophisticated mathematical language, this is not necessary. In this article we give a simple introduction to feedback control in quantum systems, and then describe verification theorems and viscosity solutions in simple language. We also illustrate their use with a concrete example of current interest.
description: 12 pages, revtex4
แนวทางการออกแบบเพื่อการระบายอากาศโดยวิธีธรรมชาติสำหรับห้องปฏิบัติการเคมีเขียว
Creators: name: นุกูล  กันเกตุ
name: ชนิกานต์  ยิ้มประยูร
name: ภัทรนันท์ ทักขนนท์
Publisher: name: มหาวิทยาลัยเกษตรศาสตร์
Year: 2014
Subjects: การระบายอากาศโดยวิธีธรรมชาติ, ห้องปฏิบัติการเคมี, แนวทางการออกแบบ, การคำนวณพลศาสตร์ของไหล

description: 1, 8, วารสารวิชาการและวิจัย มทร.พระนคร
Quantum Informational Dark Energy: Dark energy from forgetting
Creators: name: Lee, Jae-Weon
name: Lee, Jungjai
name: Kim, Hyeong-Chan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We suggest that dark energy has a quantum informational origin. Landauer's principle associated with the erasure of quantum information at a cosmic horizon implies the non-zero vacuum energy having effective negative pressure. Assuming the holographic principle, the minimum free energy condition, and the Gibbons-Hawking temperature for the cosmic event horizon we obtain the holographic dark energy with the parameter $d\simeq 1$, which is consistent with the current observational data. It is also shown that both the entanglement energy and the horizon energy can be related to Landauer's principle.
description: revtex,8 pages, 2 figures more detailed arguments added
Velocity Statistics Distinguish Quantum Turbulence from Classical Turbulence
Creators: name: Paoletti, M. S.
name: Fisher, Michael E.
name: Sreenivasan, K. R.
name: Lathrop, D. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: By analyzing trajectories of solid hydrogen tracers, we find that the distributions of velocity in decaying quantum turbulence in superfluid $^4$He are strongly non-Gaussian with $1/v^3$ power-law tails. These features differ from the near-Gaussian statistics of homogenous and isotropic turbulence of classical fluids. We examine the dynamics of many events of reconnection between quantized vortices and show by simple scaling arguments that they produce the observed power-law tails.
description: 4 pages, 4 figures
A comprehensive revisit of select Galileo/NIMS observations of Europa
Creators: name: Mishra, Ishan
name: Lewis, Nikole
name: Lunine, Jonathan
name: Hand, Kevin P.
name: Helfenstein, Paul
name: Carlson, R. W.
name: MacDonald, Ryan J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Galileo Near Infrared Mapping Spectrometer (NIMS) collected spectra of Europa in the 0.7-5.2 $μ$m wavelength region, which have been critical to improving our understanding of the surface composition of this moon. However, most of the work done to get constraints on abundances of species like water ice, hydrated sulfuric acid, hydrated salts and oxides have used proxy methods, such as absorption strength of spectral features or fitting a linear mixture of laboratory generated spectra. Such techniques neglect the effect of parameters degenerate with the abundances, such as the average grain-size of particles, or the porosity of the regolith. In this work we revisit three Galileo NIMS spectra, collected from observations of the trailing hemisphere of Europa, and use a Bayesian inference framework, with the Hapke reflectance model, to reassess Europa's surface composition. Our framework has several quantitative improvements relative to prior analyses: (1) simultaneous inclusion of amorphous and crystalline water ice, sulfuric-acid-octahydrate (SAO), CO$_2$, and SO$_2$; (2) physical parameters like regolith porosity and radiation-induced band-center shift; and (3) tools to quantify confidence in the presence of each species included in the model, constrain their parameters, and explore solution degeneracies. We find that SAO strongly dominates the composition in the spectra considered in this study, while both forms of water ice are detected at varying confidence levels. We find no evidence of either CO$_2$ or SO$_2$ in any of the spectra; we further show through a theoretical analysis that it is highly unlikely that these species are detectable in any 1-2.5 $μ$m Galileo NIMS data.
description: 30 pages, 12 figures. Published in the Planetary Science Journal
The Ramsey number for a triple of large cycles
Creators: name: Figaj, Agnieszka
name: Luczak, Tomasz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C55, 05C38

description: We find the asymptotic value of the Ramsey number for a triple of long cycles, where the lengths of the cycles are large but may have different parity.
A new radio census of neutron star X-ray binaries
Creators: name: Eijnden, J. van den
name: Degenaar, N.
name: Russell, T. D.
name: Wijnands, R.
name: Bahramian, A.
name: Miller-Jones, J. C. A.
name: Santisteban, J. V. Hernández
name: Gallo, E.
name: Atri, P.
name: Plotkin, R. M.
name: Maccarone, T. J.
name: Sivakoff, G.
name: Miller, J. M.
name: Reynolds, M.
name: Russell, D. M.
name: Maitra, D.
name: Heinke, C. O.
name: Padilla, M. Armas
name: Shaw, A. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report new radio observations of a sample of thirty-six neutron star (NS) X-ray binaries, more than doubling the sample in the literature observed at current-day sensitivities. These sources include thirteen weakly-magnetised ($B<10^{10}$ G) and twenty-three strongly-magnetised ($B\geq10^{10}$ G) NSs. Sixteen of the latter category reside in high-mass X-ray binaries, of which only two systems were radio-detected previously. We detect four weakly and nine strongly-magnetised NSs; the latter are systematically radio fainter than the former and do not exceed $L_R \approx 3\times10^{28}$ erg/s. In turn, we confirm the earlier finding that the weakly-magnetized NSs are typically radio fainter than accreting stellar-mass black holes. While an unambiguous identification of the origin of radio emission in high-mass X-ray binaries is challenging, we find that in all but two detected sources (Vela X-1 and 4U 1700-37) the radio emission appears more likely attributable to a jet than the donor star wind. The strongly-magnetised NS sample does not reveal a global correlation between X-ray and radio luminosity, which may be a result of sensitivity limits. Furthermore, we discuss the effect of NS spin and magnetic field on radio luminosity and jet power in our sample. No current model can account for all observed properties, necessitating the development and refinement of NS jet models to include magnetic field strengths up to $10^{13}$ G. Finally, we discuss jet quenching in soft states of NS low-mass X-ray binaries, the radio non-detections of all observed very-faint X-ray binaries in our sample, and future radio campaigns of accreting NSs.
description: Accepted for publication in MNRAS; 31 pages, 8 figures, 8 tables (including online supplementary materials)
Examinations of CO completeness based on three independent CO surveys
Creators: name: Sun, Yan
name: Yang, Ji
name: Yan, Qing-Zeng
name: Lin, Zehao
name: Zhang, Shaobo
name: Su, Yang
name: Xu, Ye
name: Chen, Xuepeng
name: Wang, Hongchi
name: Zhou, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the global properties recovered by an ongoing CO survey of the Milky Way Imaging Scroll Painting (MWISP) toward the Galactic outskirts. %To better understand the observational biases, Our results are also compared to those extracted by a uniform decomposition method from the CfA 1.2 m CO survey and the FCRAO 14 m outer Galaxy survey (OGS). We find that more extended and unseen structures are present in the MWISP data. The total flux across the disk recovered by the MWISP survey is 1.6 times larger than those recovered by the CfA and OGS surveys in the case of the same resolution. The discrepancies are scaling with distance. For example, in the outermost OSC arm, the flux ratios for MWISP-to-CfA and MWISP-to-OGS increase up to 43.8 and 7.4, respectively. Nonetheless, the census of molecular gas in our Galaxy is still far from complete by the MWISP, with flux completeness of $
description: 27 pages, 9 figures, 10 tables, accepted to ApJS
Mining a medieval social network by kernel SOM and related methods
Creators: name: Villa, Nathalie
name: Rossi, Fabrice
name: Truong, Quoc-Dinh
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: Statistics Theory (math.ST)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper briefly presents several ways to understand the organization of a large social network (several hundreds of persons). We compare approaches coming from data mining for clustering the vertices of a graph (spectral clustering, self-organizing algorithms. . .) and provide methods for representing the graph from these analysis. All these methods are illustrated on a medieval social network and the way they can help to understand its organization is underlined.
A REDUÇÃO DA MAIORIDADE PENAL E O PRINCÍPIO DA PROTEÇÃO INTEGRAL DA CRIANÇA E DO ADOLESCENTE
Creators: name: André Boaz Mott
Publisher: name: Zenodo
Year: 2023

description: RESUMO

O tema proposto do presente trabalho é a redução da maioridade penal bastante clamada pela sociedade. Este artigo tem por objetivo analisar se a redução da maioridade penal viola o princípio da proteção integral da criança e do adolescente. Realizou-se uma pesquisa bibliográfica considerando livros de vários autores e artigos científicos publicados na internet, os quais buscaram trazer discussões acerca da (in)constitucionalidade da redução da maioridade penal, assim como argumentos a favor e contra a sua diminuição, enfatizando, por fim, sobre a trajetória das crianças e adolescentes e o princípio da proteção integral. Concluiu-se pela importância do bem- estar do menor enquanto indivíduo, sendo dever do Estado, da família e da sociedade.

Palavras-chave: Criança. Adolescente. Redução da maioridade. Proteção integral.
Formation of polar terrestrial circumbinary planets
Creators: name: Childs, Anna
name: Martin, Rebecca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: All circumbinary planets currently detected are in orbits that are almost coplanar to the binary orbit. While misaligned circumbinary planets are more difficult to detect, observations of polar aligned circumbinary gas and debris disks around eccentric binaries suggest that polar planet formation may be possible. A polar aligned planet has a stable orbit that is inclined by 90 degrees to the orbital plane of the binary with an angular momentum vector that is aligned to the binary eccentricity vector. With n- body simulations we model polar terrestrial planet formation using hydrodynamic gas disk simulations to motivate the initial particle distribution. Terrestrial planet formation around an eccentric binary is more likely in a polar alignment than in a coplanar alignment. Similar planetary systems form in a polar alignment around an eccentric binary and a coplanar alignment around a circular binary. The polar planetary systems are stable even with the effects of general relativity. Planetary orbits around an eccentric binary exhibit tilt and eccentricity oscillations at all inclinations, however, the oscillations are larger in the coplanar case than the polar case. We suggest that polar aligned terrestrial planets will be found in the future.
description: 8 pages, 4 figures, 1 table. Accepted for publication in ApJL. arXiv admin note: text overlap with arXiv:2108.09257
GREAT D3.2 MVP Analytics Tools Module
Creators: name: Egenfeldt Nielsen, Simon
name: Schuur, Joost
Publisher: name: Zenodo
Year: 2024
Subjects: Minimum viable analytics
Data collection
Survey system
Data sharing
Case studies
Agile methodology
Stakeholder collaboration
Iterative development
Open access
Data quality monitoring
Research questions
Platform extension
Policy-makers
Technical specification
Data segmentation
Flexibilty
GREAT Project

description: This document describes the Minimum Viable Analytics (MVP) Module that combines data sources from the proprietary technology platforms DiBL and PlayMob. The Analytics Module is the realisation of what was specified in D3.1, where most of the features envisioned are available in the MVP. This can be summarised in the following:

● Ensure collected data is organised in a sufficiently segmented way for later analysis.

● Create tools to monitor recent data quality/volume to validate data collection.

● Share access to the data in a suitable format for in depth analysis.

● Implement reasonable solutions for both PlanetyPlay survey system data as well as SGI DiBL data The key areas that are on the roadmap are refinements to the survey system for improving data analysis and the data export flow for in-depth analysis and data sharing. As the MVP analytics module is further used for research on the first case studies, we expect that new feature requests will emerge that will enhance the Analytics Module at a later stage. The flexible and agile approach we envisioned in D2.1 and D3.1 has been mostly successful as we have continuously involved partners in user requirements and shared data samples. However, we are still waiting for the data collection from the first cycles to complete, which will allow GREAT partners to seriously work with the data towards answering research questions, and then get further feedback in regards to how effective the Analytics module is. Based on this input further refinement and adjustments will be made.
Flavour Violation in Gauge-Mediated Supersymmetry Breaking Models: Experimental Constraints and Phenomenology at the LHC
Creators: name: Fuks, B.
name: Herrmann, B.
name: Klasen, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an extensive analysis of gauge-mediated supersymmetry breaking models with minimal and non-minimal flavour violation. We first demonstrate that low-energy, precision electroweak, and cosmological constraints exclude large "collider-friendly" regions of the minimal parameter space. We then discuss various possibilities how flavour violation, although naturally suppressed, may still occur in gauge-mediation models. The introduction of non-minimal flavour violation at the electroweak scale is shown to relax the stringent experimental constraints, so that benchmark points, that are also cosmologically viable, can be defined and their phenomenology, i.e. squark and gaugino production cross sections with flavour violation, at the LHC can be studied.
description: 29 pages, 1 table, 27 figures. Minor changes. Version published in Nucl. Phys. B
Projective surjectivity of quadratic stochastic operators $L_1$ and its application
Creators: name: Mukhamedov, Farrukh
name: Khakimov, Otabek
name: Embong, Ahmad Fadillah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: A nonlinear Markov chain is a discrete time stochastic process whose transitions depend on both the current state and the current distribution of the process. The nonlinear Markov chain over a infinite state space can be identified by a continuous mapping (the so-called nonlinear Markov operator) defined on a set of all probability distributions (which is a simplex). In the present paper, we consider a continuous analogue of the mentioned mapping acting on $L^1$-spaces. Main aim of the current paper is to investigate projective surjectivity of quadratic stochastic operators (QSO) acting on the set of all probability measures. To prove the main result, we study the surjectivity of infinite dimensional nonlinear Markov operators and apply them to the projective surjectivity of a QSO. Furthermore, the obtained result has been applied for the existence of positive solution of some Hammerstein integral equations.
Convex Joint Graph Matching and Clustering via Semidefinite Relaxations
Creators: name: Krahn, Maximilian
name: Bernard, Florian
name: Golyanik, Vladislav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper proposes a new algorithm for simultaneous graph matching and clustering. For the first time in the literature, these two problems are solved jointly and synergetically without relying on any training data, which brings advantages for identifying similar arbitrary objects in compound 3D scenes and matching them. For joint reasoning, we first rephrase graph matching as a rigid point set registration problem operating on spectral graph embeddings. Consequently, we utilise efficient convex semidefinite program relaxations for aligning points in Hilbert spaces and add coupling constraints to model the mutual dependency and exploit synergies between both tasks. We outperform state of the art in challenging cases with non-perfectly matching and noisy graphs, and we show successful applications on real compound scenes with multiple 3D elements. Our source code and data are publicly available.
description: 12 pages, 8 figures; source code available; project webpage: https://4dqv.mpi-inf.mpg.de/JointGMC/
Observed flux density enhancement at submillimeter wavelengths during an X-class flare
Creators: name: Cristiani, G.
name: de Castro, C. G. Giménez
name: Luoni, M. L.
name: Mandrini, C. H.
name: Rovira, M. G.
name: Kaufmann, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the 30 October, 2004, X1.2/SF solar event that occurred in AR 10691 (N13 W18) at around 11:44 UT. Observations at 212 and 405 GHz of the Solar Submillimeter Telescope (SST), with high time resolution (5 ms), show an intense impulsive burst followed by a long-lasting thermal phase. EUV images from the Extreme Ultraviolet Imaging Telescope (SOHO/EIT) are used to identify the possible emitting sources. Data from the Radio Solar Telescope Network (RSTN) complement our spectral observations below 15 GHz. During the impulsive phase the turnover frequency is above 15.4 GHz. The long-lasting phase is analysed in terms of thermal emission and compared with GOES observations. From the ratio between the two GOES soft X-ray bands, we derive the temperature and emission measure, which is used to estimate the free-free submillimeter flux density. Good temporal agreement is found between the estimated and observed profiles, however the former is larger than the latter.
description: 13 pages, 7 figures
Sigurnost informacionih sistema
Creators: name: Hilčenko, Slavoljub
name: Hilčenko, Slavoljub
Publisher: name: Zenodo
Year: 2025

description: Predgovor mentoraSa sastanka održanog na Univerzitetu u Novom Sadu 2023. godine, upućena je sugestija svim nastavnicima i profesorima strukovnih škola i na Univerzitetu da u svom radu sa studentima koriste alate veštačke inteligencije (AL) kako u nastavi i na vežbama, tako i u oblikovanju nastavnih sadržina i nastavnih materijala.Mentor, dr Slavoljub Hilčenko, koristio je alatke veštačke inteligencije (ChatGPT, Bard i Gemin) za kreiranje osnovnih sadržaja predmeta SIGURNOST INFORMACIONIH SISTEMA organizovanih u 15 tema sa idejom da studenti date sadržine nadopune, prošire i ilustruju kako bi svako od njih pojedinačno kreirao svoj priručnik za učenje i polaganje ispita.Iz nedelje u nedelju, ovaj rad smo zajedno na predavanjima i vežbama analizirali, proširivali i dopunjavali.U pisanju zaključaka za svaku od tema koristili su CRVENU BOJU. Za odgovore na vežbe (napisane u ZELENOJ BOJI), koristili su PLAVU BOJU radi preglednosti i korišćenja.Između svih pregledanih radova kao najbolji odabran je rad studentkinje Jelene Dautović koji će biti štampan u obliku priručnika i dat na koriščenje sledečoj generaciji studenata uz obavezu da bude revidiran u skladu sa novim saznanjima iz ove oblasti.Ovakav pristup u radu sa studentima je bio dodatno podsticajan i motivišući što se videlo na predavanjima i vežbama, a naročito tokom odabira najboljeg rada što je predstavljalo najteži deo zadatka.NAPOMENA:Priručnik sadrži samo osnovne teme i teze, koje treba dodatno proširivati na predavanjima i vežbama. On predstavlja okvir za dalju elaboraciju.
On the possibility of P-violation at finite baryon-number densities
Creators: name: Andrianov, A. A.
name: Espriu, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show how the introduction of a finite baryon density may trigger spontaneous parity violation in the hadronic phase of QCD. Since this involves strong interaction physics in an intermediate energy range we approximate QCD by a σmodel that retains the two lowest scalar and pseudoscalar multiplets. We propose a novel mechanism based on interplay between lightest and heavy meson states which cannot be realized solely in the Goldstone boson (pion) sector and thereby is unrelated to the one advocated by Migdal some time ago. Our approach is relevant for dense matter in an intermediate regime of few nuclear densities where quark percolation does not yet play a significant role.
description: 9 pages, reduced to publish in Phys.Lett.B, a relevant ref. is added and the title is changed as compared to previous versions
Constraining Interactions in Cosmology's Dark Sector
Creators: name: Bean, Rachel
name: Flanagan, Eanna E.
name: Laszlo, Istvan
name: Trodden, Mark
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the cosmological constraints on theories in which there exists a nontrivial coupling between the dark matter sector and the sector responsible for the acceleration of the universe, in light of the most recent supernovae, large scale structure and cosmic microwave background data. For a variety of models, we show that the strength of the coupling of dark matter to a quintessence field is constrained to be less than 7% of the coupling to gravity. We also show that long range interactions between fermionic dark matter particles mediated by a light scalar with a Yukawa coupling are constrained to be less than 5% of the strength of gravity at a distance scale of 10 Mpc. We show that all of the models we consider are quantum mechanically weakly coupled, and argue that some other models in the literature are ruled out by quantum mechanical strong coupling.
description: 13 pages, 5 figures
Interchangeability of Combined Piezoelectrooptic Effect in LiTaO3 and LiNbO3 Crystals
Creators: name: Mys, O.
name: Vlokh, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In the present paper the coefficients of piezooptic (PO), electrooptic (EO) and combined piezoelectrooptic (PEO) effects for LiNbO3 and LiTaO3 crystals are reported. It is shown that the combined PEO effect is interchangeable, i.e. its coefficients determined independ-ently from the EO and PO experiments are the same.
description: 5 pages, 3 figures
PISCOLA: a data-driven transient light-curve fitter
Creators: name: Müller-Bravo, Tomás E.
name: Sullivan, Mark
name: Smith, Mathew
name: Frohmaier, Chris
name: Gutiérrez, Claudia P.
name: Wiseman, Philip
name: Zontou, Zoe
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Forthcoming time-domain surveys, such as the Rubin Observatory Legacy Survey of Space and Time, will vastly increase samples of supernovae (SNe) and other optical transients, requiring new data-driven techniques to analyse their photometric light curves. Here, we present the "Python for Intelligent Supernova-COsmology Light-curve Analysis" (PISCOLA), an open source data-driven light-curve fitter using Gaussian Processes that can estimate rest-frame light curves of transients without the need for an underlying light-curve template. We test PISCOLA on large-scale simulations of type Ia SNe (SNe Ia) to validate its performance, and show it successfully retrieves rest-frame peak magnitudes for average survey cadences of up to 7 days. We also compare to the existing SN Ia light-curve fitter SALT2 on real data, and find only small (but significant) disagreements for different light-curve parameters. As a proof-of-concept of an application of PISCOLA, we decomposed and analysed the PISCOLA rest-frame light-curves of SNe Ia from the Pantheon SN Ia sample with Non-Negative Matrix Factorization. Our new parametrization provides a similar performance to existing light-curve fitters such as SALT2. We further derived a SN Ia colour law from PISCOLA fits over $\sim$3500 to 7000Å, and find agreement with the SALT2 colour law and with reddening laws with total-to-selective extinction ratio $R_V \lesssim 3.1$.
description: Accepted in MNRAS
Positive and negative streamers in ambient air: measuring diameter, velocity and dissipated energy
Creators: name: Briels, T. M. P.
name: Kos, J.
name: Winands, G. J. J.
name: van Veldhuizen, E. M.
name: Ebert, Ute
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Positive and negative streamers are studied in ambient air at 1 bar; they emerge from a needle electrode placed 40 mm above a planar electrode. The amplitudes of the applied voltage pulses range from 5 to 96 kV; most pulses have rise times of 30 ns or shorter. Diameters, velocities and energies of the streamers are measured. Two regimes are identified; a low voltage regime where only positive streamers appear and a high voltage regime where both positive and negative streamers exist. Below 5 kV, no streamers emerge. In the range from 5 to 40 kV, positive streamers form, while the negative discharges only form a glowing cloud at the electrode tip, but no streamers. For 5 to 20 kV, diameters and velocities of the positive streamers have the minimal values of d=0.2 mm and v \approx 10^5 m/s. For 20 to 40 kV, their diameters increase by a factor 6 while the voltage increases only by a factor 2. Above the transition value of 40 kV, streamers of both polarities form; they strongly resemble each other, though the positive ones propagate further; their diameters continue to increase with applied voltage. For 96 kV, positive streamers attain diameters of 3 mm and velocities of 4*10^6 m/s, negative streamers are about 20 % slower and thinner. An empirical fit formula for the relation between velocity v and diameter d is v=0.5 d^2/(mm ns) for both polarities. Streamers of both polarities dissipate energies of the order of several mJ per streamer while crossing the gap.
description: 20 pages, 9 figures, accepted for J. Phys. D
Fractional Shapiro steps without fractional Josephson effect
Creators: name: Galaktionov, Artem V.
name: Zaikin, Andrei D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: It is widely believed that superconducting junctions involving topological insulators and hosting Majorana-like bound states may exhibit unusual "fractional" ($4π$-periodic) ac Josephson effect. Accordingly, "fractional" Shapiro steps on the current-voltage characteristics of such junctions are expected to occur under external microwave radiation. Here, we microscopically evaluate Shapiro steps in topologically trivial highly transparent superconducting weak links. The key features recovered within our analysis -- including, e.g., the so-called "missing" Shapiro steps -- turn out to be similar to those observed in topological Josephson junctions. Our results demonstrate that caution is needed while interpreting experimental results for superconducting weak links in terms of Majorana physics.
description: 19 pages, 9 figures
Land use and hydrologic soil group classification for the Yang River basin in Northeast Thailand
Creators: name: Naroumon  Poomkhonsan
name: Supasit  Konyai
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2013
Subjects: Geographic information system (GIS), Hydrologic soil groups (HSG), Water resource management

description: 4, 40, KKU Engineering Journal
Cut-off point development for the Everyday Memory Questionnaire – Revised in perimenopausal women
Creators: name: Zhu, Chen
name: Thomas, Elizabeth H. X.
name: Li, Qi
name: Arunogiri, Shalini
name: Gurvich, Caroline
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: Subjective cognitive complaints have been reported in women during perimenopause and the Everyday Memory Questionnaire – Revised (EMQ-R) has been recently evaluated as a standardized instrument to measure subjective cognitive changes. The purpose of this study was to identify potential cut-off points for the EMQ-R retrieval subscale and attentional subscale, and to assess the validity of these cut-off points in detecting objective cognitive changes associated with reported subjective cognitive complaints. After screening, 232 perimenopausal women were included in the analyses. The supervised classification and regression tree was applied to identify optimal cut-off points. Its performance was evaluated by the value of the receiver operating characteristics curve, sensitivity and specificity. Findings revealed that the optimal cut-off point for the attentional subscale was 7, and for the retrieval subscale was 13. Both cut-off points presented acceptable discrimination performance. An independent t-test indicated that both cut-off points were associated with significant differences in scores on neuropsychological measures of retrieval (episodic memory and verbal fluency) as well as neuropsychological measures of higher-level attention (working memory). The identified cut-off points may be helpful for women to track or quantify their subjective experiences of brain fog or cognitive symptoms during the menopause transition.
The impact of accretion heating and thermal conduction on the dead zone of protoplanetary disks
Creators: name: Schobert, B. N.
name: Peeters, A. G.
name: Rath, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The paper investigates the influence of accretion heating and turbulent heat conduction on the equilibrium of protoplanetary disks, extending the 2D axis-symmetric passive disk model of Flock (Flock et al. 2016, ApJ 827, 144). The model includes dust sublimation and radiative transfer with the flux-limited diffusion approximation, and predicts the density and temperature profiles as well as the dust to gas ratio of the disk. It is shown that the accretion heating can have a large impact: For accretion rates above 5*10^(-8) M_solar /yr a zone forms behind the silicate condensation front with sufficiently high temperature to sublimate the dust and form a gaseous cavity. Assuming a Prandtl number ~ 0.7, it is furthermore shown that the turbulent heat conduction cannot be neglected in the evaluation of the temperature profile. While the inner rim position is not affected by viscous heating, the dead zone edge shifts radially outward for higher accretion rates.
Rotation and Turbulence of the Hot ICM in Galaxy Clusters
Creators: name: Fang, Taotao
name: Humphrey, Philip J.
name: Buote, David A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cosmological simulations of galaxy clusters typically find that the weight of a cluster at a given radius is not balanced entirely by the thermal gas pressure of the hot ICM, with theoretical studies emphasizing the role of random turbulent motions to provide the necessary additional pressure support. Using a set of high-resolution, hydrodynamical simulations of galaxy clusters that include radiative cooling and star formation, we find instead that in the most relaxed clusters rotational support exceeds that from random turbulent motions for radii 0.1 - 0.5 r_500, and that the observed clusters are much rounder than the simulated, relaxed clusters within ~ 0.4 r_500. Moreover, while the observed clusters display an average ellipticity profile that does not vary significantly with radius, the ellipticity of the relaxed CDM clusters declines markedly with increasing radius, suggesting that the ICM of the observed clusters rotates less rapidly than that of the relaxed CDM clusters out to ~ 0.6 r_500. We also find the ellipticity profile of a simulated cluster without radiative cooling is in much better agreement with the observations, implying that over-cooling has a substantial impact on the gas dynamics and morphology out to larger radii than previously recognized. It also suggests that the 10%-20% systematic errors from non-thermal gas pressure support reported for simulated cluster masses, obtained from fitting simulated X-ray data over large radial ranges within r_500, may need to be revised downward. These results demonstrate the utility of X-ray ellipticity profiles as a probe of ICM rotation and over-cooling which should be used to constrain future cosmological cluster simulations.
description: 13 pages, 8 figures, accepted for publication in ApJ
Measuring the rationality in evacuation behavior with deep learning
Creators: name: Hou, Huaidian
name: Wang, Lingxiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The bounded rationality is a crucial component in human behaviors. It plays a key role in the typical collective behavior of evacuation, in which the heterogeneous information leads to the deviation of rational choices. In this study, we propose a deep learning framework to extract the quantitative deviation which emerges in a cellular automaton (CA) model describing the evacuation. The well-trained deep convolutional neural networks (CNNs) accurately predict the rational factors from multi-frame images generated by the CA model. In addition, it should be noted that the performance of this machine is robust to the incomplete images corresponding to global information loss. Moreover, this framework provides us with a playground in which the rationality is measured in evacuation and the scheme could also be generalized to other well-designed virtual experiments.
description: 11 pages, 6 figures, and comments welcome
Reflected spectroscopy of small exoplanets I: determining the atmospheric composition of sub-Neptunes planets
Creators: name: Damiano, Mario
name: Hu, Renyu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Direct imaging of widely separated exoplanets from space will obtain their reflected light spectra and measure their atmospheric properties, and small and temperate planets will be the focus of the next generation telescopes. In this work, we used our Bayesian retrieval algorithm ExoReL$^{\Re}$ to determine the constraints on the atmospheric properties of sub-Neptune planets from observations taken with a HabEx-like telescope. Small and temperate planets may have a non-H$_2$-dominated atmosphere, and therefore, we introduced the compositional analysis technique in our framework to explore the bulk atmospheric chemistry composition without any prior knowledge about it. We have developed a novel set of prior functions for the compositional analysis free parameters. We compared the performances of the framework with the flat prior and the novel prior and we reported a better performance when using the novel priors set. We found that the retrieval algorithm can not only identify the dominant gas of the atmosphere but also to constraint other less abundant gases with high statistical confidence without any prior information on the composition. The results presented here demonstrates that reflected light spectroscopy can characterize small exoplanets with diverse atmospheric composition. The Bayesian framework should be applied to design the instrument and the observation plan of exoplanet direct imaging experiments in the future.
description: 16 pages, 12 figures, 4 tables, accepted for publication in AJ
Electrooptic Effect in Non-Centrosymmetric CsLiB6O10 Borate Crystals
Creators: name: Mys, O.
name: Adamiv, V.
name: Martunyuk-Lototska, I.
name: Vlokh, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Electrooptic coefficient of CsLiB6O10 crystals has been experimentally determined as r63=3.3*10-12m/V. The half-wave voltage for CsLiB6O10 (Ul/2=26 kV) is three orders of magnitude larger than that of the known KDP crystals.
description: 2 pages, 1 figure
Letter from Kathleen Raine to Robin Skelton, [between 1955 and 1989]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine responds to Skelton's writing; transcribing two passages for him to reference and discussing Plato, Yeats, and archetypes of the poetic landscape and Eden.
Prevention of dealloying in manganese aluminium bronze propeller: Part II
Creators: name: Napachat Tareelap
name: Kaysinee Sriraksasin
name: Nakorn Srisukhumbowornchai
name: Swieng Thuanboon
name: Choochat  Nitipanyawong
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2014
Subjects: Dealloying corrosion,Corrosion prevention,Cathodic protection,Manganese aluminium bronze (MAB), Sacrificial anode

description: 1, 41, KKU Engineering Journal
Subcritical dynamos in shear flows
Creators: name: Rincon, F.
name: Ogilvie, G. I.
name: Proctor, M. R. E.
name: Cossu, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Identifying generic physical mechanisms responsible for the generation of magnetic fields and turbulence in differentially rotating flows is fundamental to understand the dynamics of astrophysical objects such as accretion disks and stars. In this paper, we discuss the concept of subcritical dynamo action and its hydrodynamic analogue exemplified by the process of nonlinear transition to turbulence in non-rotating wall-bounded shear flows. To illustrate this idea, we describe some recent results on nonlinear hydrodynamic transition to turbulence and nonlinear dynamo action in rotating shear flows pertaining to the problem of turbulent angular momentum transport in accretion disks. We argue that this concept is very generic and should be applicable to many astrophysical problems involving a shear flow and non-axisymmetric instabilities of shear-induced axisymmetric toroidal velocity or magnetic fields, such as Kelvin-Helmholtz, magnetorotational, Tayler or global magnetoshear instabilities. In the light of several recent numerical results, we finally suggest that, similarly to a standard linear instability, subcritical MHD dynamo processes in high-Reynolds number shear flows could act as a large-scale driving mechanism of turbulent flows that would in turn generate an independent small-scale dynamo.
description: 12 pages. Submitted to Astronomische Nachrichten (2007 Catania MHD Workshop special issue)
HEMP: High-order Entropy Minimization for neural network comPression
Creators: name: Tartaglione, Enzo
name: Lathuilière, Stéphane
name: Fiandrotti, Attilio
name: Cagnazzo, Marco
name: Grangetto, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We formulate the entropy of a quantized artificial neural network as a differentiable function that can be plugged as a regularization term into the cost function minimized by gradient descent. Our formulation scales efficiently beyond the first order and is agnostic of the quantization scheme. The network can then be trained to minimize the entropy of the quantized parameters, so that they can be optimally compressed via entropy coding. We experiment with our entropy formulation at quantizing and compressing well-known network architectures over multiple datasets. Our approach compares favorably over similar methods, enjoying the benefits of higher order entropy estimate, showing flexibility towards non-uniform quantization (we use Lloyd-max quantization), scalability towards any entropy order to be minimized and efficiency in terms of compression. We show that HEMP is able to work in synergy with other approaches aiming at pruning or quantizing the model itself, delivering significant benefits in terms of storage size compressibility without harming the model's performance.
Large-scale structure of time evolving citation networks
Creators: name: Leicht, E. A.
name: Clarkson, Gavin
name: Shedden, Kerby
name: Newman, M. E. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we examine a number of methods for probing and understanding the large-scale structure of networks that evolve over time. We focus in particular on citation networks, networks of references between documents such as papers, patents, or court cases. We describe three different methods of analysis, one based on an expectation-maximization algorithm, one based on modularity optimization, and one based on eigenvector centrality. Using the network of citations between opinions of the United States Supreme Court as an example, we demonstrate how each of these methods can reveal significant structural divisions in the network, and how, ultimately, the combination of all three can help us develop a coherent overall picture of the network's shape.
description: 10 pages, 6 figures; journal names for 4 references fixed
Construíndo ruínas: relações entre imagem, dados e ecologia em arte, ciência e tecnologia
Creators: name: Oliveira, Fernanda de Souza
name: Filho, Claudio de Melo
Publisher: name: Labfront/UEMG
Year: 2023

description: No século XXI tornou-se extremamente difícil abordar assuntos relacionados à mudança social, política, cultural, tecnológica e econômica sem tecer referência sobre as mudanças ou crises ambientais.  Se anteriormente a mentalidade da sociedade não estava atenta à penetração do discurso ambiental dentro dos sistemas que fazem o mundo, atualmente as mudanças climáticas, junto aos sistemas tecnológicos, tornam-se um vetor de mudança planetária colocada diretamente na própria essência dos sistemas complexos que envolvem o mundo. Esta proposta de comunicação busca investigar as relações entre imagem, dados e ecologia no pensamento e na produção prática do coletivo Kōdos (formado pelos autores), cujo principal eixo de ação configura-se na visibilidade das ruínas do pensamento sistêmico. Nosso objetivo é especular importantes disparadores que colocam em movimento outras possibilidades de se pensar ciência e tecnologia na prática artística com a consciência das crises ambientais.