cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Homomorphic-Encrypted Volume Rendering
Creators: name: Mazza, Sebastian
name: Patel, Daniel
name: Viola, Ivan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences
subject: I.3.6
subject: 68U05

description: Computationally demanding tasks are typically calculated in dedicated data centers, and real-time visualizations also follow this trend. Some rendering tasks, however, require the highest level of confidentiality so that no other party, besides the owner, can read or see the sensitive data. Here we present a direct volume rendering approach that performs volume rendering directly on encrypted volume data by using the homomorphic Paillier encryption algorithm. This approach ensures that the volume data and rendered image are uninterpretable to the rendering server. Our volume rendering pipeline introduces novel approaches for encrypted-data compositing, interpolation, and opacity modulation, as well as simple transfer function design, where each of these routines maintains the highest level of privacy. We present performance and memory overhead analysis that is associated with our privacy-preserving scheme. Our approach is open and secure by design, as opposed to secure through obscurity. Owners of the data only have to keep their secure key confidential to guarantee the privacy of their volume data and the rendered images. Our work is, to our knowledge, the first privacy-preserving remote volume-rendering approach that does not require that any server involved be trustworthy; even in cases when the server is compromised, no sensitive data will be leaked to a foreign party.
description: Paper accepted for presentation at IEEE VIS (SciVis) 2020
Capillary-scale solid rebounds: experiments, modelling and simulations
Creators: name: Galeano-Rios, Carlos A.
name: Cimpeanu, Radu
name: Bauman, Isabelle A.
name: MacEwen, Annika
name: Milewski, Paul A.
name: Harris, Daniel M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A millimetre-size superhydrophobic sphere impacting on the free surface of a quiescent bath can be propelled back into the air by capillary effects and dynamic fluid forces, whilst transferring part of its energy to the fluid. We report the findings of a thorough investigation of this phenomenon, involving different approaches. Over the range from minimum impact velocities required to produce rebounds to impact velocities that cause the sinking of the solid sphere, we focus on the dependence of the coefficient of restitution, contact time and maximum surface deflection on the different physical parameters of the problem. Experiments, simulations and asymptotic analysis reveal trends in the rebound metrics, uncover new phenomena at both ends of the Weber number spectrum, and collapse the data. Direct numerical simulations using a pseudo-solid sphere successfully reproduce experimental data whilst also providing insight into flow quantities that are challenging to determine from experiments. A model based on matching the motion of a perfectly hydrophobic impactor to a linearised fluid free surface is validated against direct numerical simulations and used in the low Weber number regime. The hierarchical and cross-validated models in this study allow us to explore the entirety of our target parameter space within a challenging multi-scale system.
description: 31 pages, 16 figures
Superdiffusivity of two dimensional lattice gas models
Creators: name: Landim, C.
name: Ramirez, J. A.
name: Yau, H. -T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: It was proved \cite{EMYa, QY} that stochastic lattice gas dynamics converge to the Navier-Stokes equations in dimension $d=3$ in the incompressible limits. In particular, the viscosity is finite. We proved that, on the other hand, the viscosity for a two dimensional lattice gas model diverges faster than $\log \log t$. Our argument indicates that the correct divergence rate is $(\log t)^{1/2}$. This problem is closely related to the logarithmic correction of the time decay rate for the velocity auto-correlation function of a tagged particle.
Nonequilibrium many-body dynamics along a dissipative Hubbard chain: Symmetries and Quantum Monte Carlo simulations
Creators: name: Muehlbacher, Lothar
name: Ankerhold, Joachim
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The nonequilibrium dynamics of correlated charge transfer along a one-dimensional chain in presence of a phonon environment is investigated within a dissipative Hubbard model. For this generalization of the ubiquitous spin-boson model the crucial role of symmetries is analysed in detail and corresponding invariant subspaces are identified. It is shown that the time evolution typically occurs in each of the disjunct subspaces independently leading e.g. asymptotically to a non-Boltzmann equilibrium state. Based on these findings explicit results are obtained for two interacting electrons by means of a substantially improved real-time quantum Monte Carlo approach. In the incoherent regime an appropriate mapping of the many-body dynamics onto an isomorphic single particle motion allows for an approximate description of the numerical data in terms of rate equations. These results may lead to new control schemes of charge transport in tailored quantum systems as e.g. molecular chains or quantum dot arrays.
description: 13 pages, 9 figures submitted to Phys. Rev. B
Moebjergarctus clarionclippertonensis Bai, X. Wang, Zhou, Lin, Meng & Fontoura 2020
Creators: name: Trokhymchuk, Roman
name: Schmidt-Rhaesa, Andreas
name: Utevsky, Serge
name: Kristensen, Reinhardt Møbjerg
name: Kieneke, Alexander
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Tardigrada
Heterotardigrada
Arthrotardigrada
Halechiniscidae
Moebjergarctus
Moebjergarctus clarionclippertonensis

description: Moebjergarctus clarionclippertonensis Bai, Wang, Zhou, Lin, Meng & Fontoura, 2020
N= 4 specimens: 2 females, 2 with undetermined sex occurrence: ANDEEP 1, ANDEEP-SYSTCO; 3,551–3,650 m bsl.
Fig. 7; Supplementary Table 1.4
Short description
Large and robust tardigrade 148–283 µm long and 52.3–99.7 µm width (n=2). Buccal apparatus with stylets (Fig. 7B). Cephalic cirri with annulated base, smooth portion of the scapus and short flagellum (Fig. 7E, F). Each leg with a sensory organ (Fig. 7E). Internal and external digits are of the same size and wrinkled (Fig. 7C, G). Caudal region is covered with a thick cuticular layer shown as a bulge (Fig. 7A, E). All the females have a patched seminal receptacle opening (Fig. 7D, H).
Remarks
The identification of this species is certain because of the morphology of cephalic cirri (annulated base, smooth scapus and short flagellum). The internal and external digits of all limbs are the same size that distinguishes this species from M. okhotensis (Bai et al. 2020, Saulenko et al. 2022). This species was previously reported from Pacific deep-sea plains with a high abundance of manganese or polymetallic nodules (Bai et al. 2020). At least the sampling stations of expedition ANDEEP 1 that contained M. clarionclippertonensis (Shackleton Fracture Zone, 59°52.30′S, 59°57.63′W) at the deep sea bottom of the Drake Passage are also close to areas with polymetallic sulfide deposits and hydrothermal vent activity (see discussion for details).
description: Published as part of Trokhymchuk, Roman, Schmidt-Rhaesa, Andreas, Utevsky, Serge, Kristensen, Reinhardt Møbjerg & Kieneke, Alexander, 2024, Towards a better understanding of deep-sea tardigrade biogeography: numerous new records from the Southern Ocean, pp. 1-39 in Zootaxa 5543 (1) on page 17, DOI: 10.11646/zootaxa.5543.1.1, http://zenodo.org/record/14385085
Das schwarze Buch der Farben – Sensibilisierung der Sinne für ein inklusives Miteinander
Creators: name: Jennert, Pia
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Inklusion
subject: Zugänglichkeit
subject: Sensibilisierung
subject: 430
subject: Inklusive Pädagogik
subject: Zugang

description: DoLiMette;9. Jg. 2021, Heft 1
Semiclassical theory of the quasi two-dimensional trapped Bose gas
Creators: name: Holzmann, Markus
name: Chevallier, Maguelonne
name: Krauth, Werner
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss the quasi two-dimensional trapped Bose gas where the thermal occupation of excited states in the tightly confined direction is small but remains finite in the thermodynamic limit. We show that the semiclassical theory describes very accurately the density profile obtained by Quantum Monte Carlo calculations in the normal phase above the Kosterlitz--Thouless temperature T_KT, but differs strongly from the predictions of strictly two-dimensional mean-field theory, even at relatively high temperature. We discuss the relevance of our findings for analyzing ultra-cold-atom experiments in quasi two-dimensional traps.
description: 5 pages, 3 figures
The intensity and evolution of the extreme storms in January 1938
Creators: name: Hayakawa, Hisashi
name: Hattori, Kentaro
name: Pevtsov, Alexei A.
name: Ebihara, Yusuke
name: Shea, Margaret A.
name: McCracken, Ken G.
name: Daglis, Ioannis A.
name: Bhaskar, Ankush
name: Ribeiro, Paulo
name: Knipp, Delores J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Major solar eruptions occasionally direct interplanetary coronal mass ejections (ICMEs) to Earth and cause significant geomagnetic storms and low-latitude aurorae. While single extreme storms are of significant threats to the modern civilization, storms occasionally appear in sequence and, acting synergistically, cause 'perfect storms' at Earth. The stormy interval in January 1938 was one of such cases. Here, we analyze the contemporary records to reveal its time series on their source active regions, solar eruptions, ICMEs, geomagnetic storms, low-latitude aurorae, and cosmic-ray (CR) variations. Geomagnetic records show that three storms occurred successively on 17/18 January (Dcx ~ -171 nT) on 21/22 January (Dcx ~ -328 nT) and on 25/26 January (Dcx ~ -336 nT). The amplitudes of the cosmic-ray variations and sudden storm commencements show the impact of the first ICME as the largest (~ 6% decrease in CR and 72 nT in SSC) and the ICME associated with the storms that followed as more moderate (~ 3% decrease in CR and 63 nT in SSC; ~ 2% decrease in CR and 63 nT in SSC). Interestingly, a significant solar proton event occurred on 16/17 January and the Cheltenham ionization chamber showed a possible ground level enhancement. During the first storm, aurorae were less visible at mid-latitudes, whereas during the second and third storms, the equatorward boundaries of the auroral oval were extended down to 40.3° and 40.0° in invariant latitude. This contrast shows that the initial ICME was probably faster, with a higher total magnitude but a smaller southward component.
description: main text 28 pages, references 11 pages, 2 tables, and 8 figures. Accepted for publication in the Astrophysical Journal
A Spitzer/IRAC Search for Substellar Companions of the Debris Disk Star epsilon Eridani
Creators: name: Marengo, M.
name: Megeath, S. T.
name: Fazio, G. G.
name: Stapelfeldt, K. R.
name: Werner, M. W.
name: Backman, D. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used the InfraRed Array Camera (IRAC) onboard the Spitzer Space telescope to search for low mass companions of the nearby debris disk star epsilon Eridani. The star was observed in two epochs 39 days apart, with different focal plane rotation to allow the subtraction of the instrumental Point Spread Function, achieving a maximum sensitivity of 0.01 MJy/sr at 3.6 and 4.5 um, and 0.05 MJy/sr at 5.8 and 8.0 um. This sensitivity is not sufficient to directly detect scattered or thermal radiation from the epsilon Eridani debris disk. It is however sufficient to allow the detection of Jovian planets with mass as low as 1 MJ in the IRAC 4.5 um band. In this band, we detected over 460 sources within the 5.70 arcmin field of view of our images. To test if any of these sources could be a low mass companion to epsilon Eridani, we have compared their colors and magnitudes with models and photometry of low mass objects. Of the sources detected in at least two IRAC bands, none fall into the range of mid-IR color and luminosity expected for cool, 1 Gyr substellar and planetary mass companions of epsilon Eridani, as determined by both models and observations of field M, L and T dwarf. We identify three new sources which have detections at 4.5 um only, the lower limit placed on their [3.6]-[4.5] color consistent with models of planetary mass objects. Their nature cannot be established with the currently available data and a new observation at a later epoch will be needed to measure their proper motion, in order to determine if they are physically associated to epsilon Eridani.
description: 36 pages, to be published on The Astrophysical Journal, vol. 647, August 2006
A Bayesian joint model for multivariate longitudinal and time-to-event data with application to ALL maintenance studies
Creators: name: Kundu, Damitri
name: Sarkar, Partha
name: Das, Kiranmoy
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Retraction: A Bayesian joint model for multivariate longitudinal and time-to-event data with application to ALL maintenance studies (DOI: 10.1080/10543406.2023.2171430) We, the Publisher of the Journal of Biopharmaceutical Statistics, have retracted the following article: Damitri Kundu, Partha Sarkar & Kiranmoy Das. A Bayesian joint model for multivariate longitudinal and time-to-event data with application to ALL maintenance studies. Journal of Biopharmaceutical Statistics, Latest Articles. 2023. 10.1080/10543406.2023.2171430. This is an outdated version of a duplicate article published in March 2023 (DOI: 10.1080/10543406.2023.2187413). Although published online, this article was never compiled into an issue. We are now correcting the scholarly record.   We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.   The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted.”
von Volokolamsk, Metropolit Pitirim (Hrsg.) / Jurjev (Hrsg.), Die Russische Orthodoxe Kirche
Creators: name: Felmy, Karl Christian
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 39 Nr. 1 (1990): Ökumenische Rundschau, Band 39, Heft 1
A naturalistic justification for criminal punishment
Creators: name: Whiteley, Diane Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: In this study I tackle the problem of justifying criminal punishment. Although I take heed of a traditional line of theorizing which says that punishment is an expressive and communicative endeavour, my theory breaks away from traditional approaches. This break is motivated by a recognition that theorists working in the traditional framework have failed to resolve the tension between retributivist and consequentialist reasons for punishment. I argue that punishment is justified as a type of communication from those affected by the crime to distinct and varied audiences. My naturalistic theory is structured around two fundamental themes, naturalism and pluralism about aims. The naturalism consists in the fact that the theory takes an empirically informed descriptive approach to the problem of justifying punishment. This foundation provides the resources for developing a balanced view of the moral agent which takes into account not only cognitive but also emotional capacities. This broader, deeper view of agency permits, indeed calls for, an analysis of the moral psychologies of those involved in the social practice. That analysis leads to the explanation that punishment is a type of communication of, among other things, strong but justified moral sentiments. Further development of this view suggests that punishment's various messages are intended for a variety of audiences - not just the wrongdoer but also the victim and community. That explication supports my other fundamental theme, pluralism about aims. The social institution of punishment is a complex one involving stakeholders who have differing motives and needs. Consequently, we should reject strategies which claim that punishment's justification can be reduced to one reason such as, for example, that the criminal deserves it. I argue that punishment's justification is multifaceted and complex. The arguments I put forward to justify punishment also bring to light aspects of the existing social institution that need reform. In general, they point to the need to design penal measures that promote communication among wrongdoer, victim and community. But I also call for a specific reform. I argue that the victim, whose concerns have traditionally been disregarded, should also be given a voice within the social institution.
Medium effects on the electrical and Hall conductivities of a hot and magnetized pion gas
Creators: name: Kalikotay, Pallavi
name: Ghosh, Snigdha
name: Chaudhuri, Nilanjan
name: Roy, Pradip
name: Sarkar, Sourav
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The electrical and Hall conductivities in a uniform magnetic field are evaluated for an interacting pion gas using the kinetic theory approach within the ambit of relaxation time approximation (RTA). The in-medium cross sections vis-a-vis the relaxation time for $ππ$ scattering are obtained using a one-loop modified thermal propagator for the exchanged $ρ$ and $σ$ mesons using thermal field theoretic techniques. For higher values of the magnetic field, a monotonic increase of the electrical conductivity with the temperature is observed. However, for a given temperature the conductivity is found to decrease steadily with magnetic field. The Hall conductivity, at lower values of the magnetic field, is found to decrease with temperature more rapidly than the electrical conductivity, whereas at higher values of the magnetic field, a linear increase is seen. Use of the in-medium scattering cross-section is found to produce a significant effect on the temperature dependence of both electrical and Hall conductivities compared to the case where vacuum cross-section is used.
description: Version published in Physical Review D
title: Achieving sustainability through adaptive reuse strategies: Beijing 798 Arts District demonstrates the power of cultural and creative industry
Creators: name: Wu, Lihui
Publisher: name: VIU Press
Year: 2021
Subjects: subject: Urban renewal--China--Beijing
subject: Urban renewal--Citizen participation
subject: Factories--Remodeling for other use--China--Beijing

description: This case study demonstrates how an obsolete military factory complex, which manufactured weapon components in the industrialization period, was developed into a center of contemporary art as an example of urban renewal (Dekker, 2011). Using an adaptive reuse strategy, what is now known as the 798 Arts District survived a demolition crisis and achieved economic and cultural sustainability by transforming into a cultural epicenter (Dekker, 2011). After much negotiation between the government and the cultural industry, the district has turned into a flourishing mixed-use community that benefits the landowner, artists, neighboring residents, and tourists. The success of the 798 Arts District stems from the grassroots movement initiated by the artists and non-profit institutes. They challenged the authorities, who intended to carry out the demolition of the 798 Arts District, to preserve the cultural heritage of that area and shift power to the people. The adaptive reuse strategy also played a critical role in the process; the aim of this strategy is to retain the aesthetics of the original venues and preserve their cultural, architectural and historical values (Sasaki, 2020). Ultimately, the 798 Arts District gave voice to the cultural and creative industry and proved the economic and social viability of the cultural economy (Currier, 2008). The 798 Arts District can serve as a model of sustainability for other arts districts or redevelopment projects in urban areas.
Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600
Creators: name: Mufakharov, T.
name: Mikhailov, A.
name: Sotnikova, Yu.
name: Mingaliev, M.
name: Stolyarov, V.
name: Erkenov, A.
name: Nizhelskij, N.
name: Tsybulev, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the first detection at 4.7 and 8.2 GHz with the RATAN-600 radio telescope of the source PSO J047.4478+27.2992, which has been announced as a blazar at z=6.1. The average flux density is $12\pm3$ and $8\pm4$ mJy at 4.7 and 8.2 GHz respectively, and an upper limit is estimated as 3 mJy at 11.2 GHz. The light curve at 4.7 GHz, obtained on a time-scale of four months, exhibits moderate variability of the source (fractional variability $F_{var}=0.28\pm0.02$). The new RATAN-600 measurements extend previous literature data to higher frequencies, indicating a single power-law radio spectrum with $α_{0.147-8.2}$=$-0.51\pm0.1$. The monochromatic radio luminosity at 4.7 GHz $P_ν \sim 2 \times 10^{27}$ W Hz$^{-1}$ is consistent with values for high-redshift quasars at $z\geq 3$.
description: 6 pages, 5 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society
Spitzer Uncovers Active Galactic Nuclei Missed by Optical Surveys in 7 Late-type Galaxies
Creators: name: Satyapal, S.
name: Vega, D.
name: Dudik, R. P.
name: Abel, N. P.
name: Heckman, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery using Spitzers high resolution spectrograph of 7 Active Galactic Nuclei (AGN) in a sample of 32 late-type galaxies that show no definitive signatures of AGN in their optical spectra. Our observations suggest that the AGN detection rate in late-type galaxies is possibly 4 times larger than what optical spectroscopic observations alone suggest. We demonstrate using photoionization models with an input AGN and an extreme EUV-bright starburst ionizing radiation field that the observed mid-infrared line ratios cannot be replicated unless an AGN contribution, in some cases as little as 10% of the total galaxy luminosity, is included. These models show that when the fraction of the total luminosity due to the AGN is low, optical diagnostics are insensitive to the presence of the AGN. In this regime of parameter space, the mid-infrared diagnostics offer a powerful tool for uncovering AGN missed by optical spectroscopy. The AGN bolometric luminosities in our sample range from ~3 X 10^41 - ~2 X 10^43 ergs s^-1, which, based on the Eddington limit, corresponds to a lower mass limit for the black hole that ranges from ~3 X 10^3Mdot to as high as ~1.5 X 10^5Mdot. These lower mass limits however do not put a strain on the well-known relationship between the black hole mass and the host galaxy's stellar velocity dispersion established in predominantly early-type galaxies. Our findings add to the growing evidence that black holes do form and grow in low-bulge environments and that they are significantly more common than optical studies indicate.
description: 8 figures, 17 pages, astro-ph\0801.2766 (Abel & Satyapal 2008; ApJ accepted) and this posting designed to form a two-part investigation
Theory of optically detected spin noise in nanosystems
Creators: name: Smirnov, D. S.
name: Mantsevich, V. N.
name: Glazov, M. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Theory of spin noise in low dimensional systems and bulk semiconductors is reviewed. Spin noise is usually detected by optical means, continuously measuring the rotation angle of the polarization plane of the probe beam passing through the sample. Spin noise spectra yield rich information about the spin properties of the system including, for example, $g$-factors of the charge carriers, spin relaxation times, parameters of the hyperfine interaction, spin-orbit interaction constants, frequencies and widths of the optical resonances. The review describes basic models of spin noise, methods of its theoretical description, and their relation with the experimental results. We also discuss the relation between the spin noise spectroscopy, the strong and weak quantum measurements and the spin flip Raman scattering, and analyze similar effects including manifestations of the charge, current and valley polarization fluctuations in the optical response. Possible directions for further development of the spin noise spectroscopy are outlined.
description: Accepted to Phys. Usp. The original manuscript in Russian is available in the supplementary files at arXiv and at this URL: https://www.dropbox.com/s/kz5uyz3btgocf8l/UFN_spin_noise_review_rus.pdf?dl=1
Fiorenza, Elisabeth Schüssler, Zu ihrem Gedächtnis ... Eine feministisch-theologische Rekonstruktion der christlichen Ursprünge
Creators: name: Albrecht, Ruth
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 39 Nr. 1 (1990): Ökumenische Rundschau, Band 39, Heft 1
On the Wedderburn principal theorem in conformal algebras
Creators: name: Kolesnikov, Pavel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16S32, 16S99, 16W20

description: We investigate an analogue of the Wedderburn principal theorem for associative conformal algebras with finite faithful representations. It is shown that the radical splitting property for an algebra of this kind holds if the maximal semisimple factor of this algebra is unital, but does not hold in general.
description: v2: slightly revised; 14 pages; to appear in J. Algebra and Its Applications
Scalar Casimir effect between Dirichlet spheres or a plate and a sphere
Creators: name: Bulgac, Aurel
name: Magierski, Piotr
name: Wirzba, Andreas
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a simple formalism for the evaluation of the Casimir energy for two spheres and a sphere and a plane, in case of a scalar fluctuating field, valid at any separations. We compare the exact results with various approximation schemes and establish when such schemes become useful. The formalism can be easily extended to any number of spheres and/or planes in three or arbitrary dimensions, with a variety of boundary conditions or non-overlapping potentials/non-ideal reflectors.
description: published version; 13 pages, 2 figures; add. material (in Sec.VI) and corrections (esp. in App.B)
Ultrasonic determination of the residual wall thickness of glass furnace refractories
Creators: name: Fleischmann, Bernhard
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: The determination of the corrosion progress of refractory blocks on operating glass furnaces is of great interest to the glass industry. Several European glass research Institutes collaborated within the European SPRINT programme to develop an ultrasonic method of measuring the residual thickness of refractory blocks. The experience of the Hüttentechnische Vereinigung der Deutschen Glasindustrie and the TNO Institute of Applied Physics in the field of ultrasonic testing of materials as well as high-temperature applications of ultrasound were used to develop a device that was tested under laboratory conditions and in first industrial tests. After scaling up the equipment a number of industrial measurements were carried out on different furnace types in Europe. These tests showed that reliable results can be obtained with this device.
General cut method for computing Szeged-like topological indices with applications to molecular graphs
Creators: name: Brezovnik, Simon
name: Tratnik, Niko
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C09 05C92 05C12 05C22 92E10

description: Szeged, PI and Mostar indices are some of the most investigated distance-based molecular descriptors. Recently, many different variations of these topological indices appeared in the literature and sometimes they are all together called Szeged-like topological indices. In this paper, we formally introduce the concept of a general Szeged-like topological index, which includes all mentioned indices and also infinitely many other topological indices that can be defined in a similar way. As the main result of the paper, we provide a cut method for computing a general Szeged-like topological index for any strength-weighted graph. This greatly generalizes various methods known for some of the mentioned indices and therefore rounds off such investigations. Moreover, we provide applications of our main result to benzenoid systems, phenylenes, and coronoid systems, which are well-known families of molecular graphs. In particular, closed-form formulas for some subfamilies of these graphs are deduced.
Nonequilibrium Central Limit Theorem for a Tagged Particle in Symmetric Simple Exclusion
Creators: name: Jara, M. D.
name: Landim, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We prove a nonequilibirum central limit theorem for the position of a tagged particle in the one-dimensional nearest-neighbor symmetric simple exclusion process under diffusive scaling starting from a Bernoulli product measure associated to a smooth profile $ρ_0:\bb R\to [0,1]$.
Modeling of bubble removal from glassmelts at fining temperatures
Creators: name: Itoh, Eiji
name: Yoshikawa, Hidemi
name: Kawase, Yoshinori
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Α new model based on the quasi-stationary approximation is developed for removal of gas bubbles from glassmelts due to buoyant rise of bubbles. The growth and rising of multicomponent gas bubbles in glassmelts are examined from the view point of interfacial mass transfer. It is shown that the models for rising bubbles in glassmelts available in the literature are based on the quasi-steady approximation which is not very reasonable. The growth of a gas bubble initially consisting of nitrogen only is studied in a glassmelt whose diffusing gases are oxygen, water, carbon dioxide, sulfide and nitrogen. The proposed model based on the unsteady-state mass transfer (the quasi-stationary approximation) is compared with the model based on the steady-state mass transfer (the quasisteady approximation). The former, which provides more rational and better descriptions of bubble behavior in refming processes compared with the latter, predicts rather shorter refming times than the latter.
Higher-order vector Peregrine solitons and asymptotic estimates for the multi-component nonlinear Schrödinger equations
Creators: name: Zhang, Guoqiang
name: Ling, Liming
name: Yan, Zhenya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We first report the first- and higher-order vector Peregrine solitons (alias rational rogue waves) for the any multi-component NLS equations based on the loop group theory, an explicit (n + 1)-multiple eigenvalue of a characteristic polynomial of degree (n + 1) related to the condition of Benjamin-Feir instability, and inverse functions. Particularly, these vector rational rogue waves are parity-time symmetric for some parameter constraints. A systematic and effective approach is proposed to study the asymptotic behaviors of these vector rogue waves such that the decompositions of rogue waves are related to the so-called governing polynomials, which pave a powerful way in the study of vector rogue wave structures of the multi-component integrable systems. The vector rogue waves with maximal amplitudes can be determined via the parameter vectors, which is interesting and useful in the multi-component physical systems.
description: 42 pages, 7 figures
Automated Data Acquisition for Low-Volume Road Inventory and Management
Creators: name: Hopwood, Theodore
name: Sharpe, Gary W.
name: Hutchinson, John W.
name: Deen, Robert C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: Local governments need suitable inventories and condition surveys to accurately determine and prioritize their funding needs. An efficient method of performing an inventory of the roads and subsequently determining the condition of major system components is to use an automated data-acquisition system to measure and record essential data. The data may be collected and processed by a central inventory management group. The inventory should include pavement characteristics, roadway geometries, and roadside features. Pavement condition may include structural integrity, road roughness, and skid resistance. Roadway geometries include horizontal curvature, length, width, superelevation, and grade. Roadside features include signing, intersections, guardrails, and obstacles.  This paper presents a concept for a second-generation vehicle-mounted photologging system that may, in a single-pass, photolog the roadway and automatically record measurements necessary for inventoring and rating. Also, major functions of a central inventory management group are described.
Oriented mica glass-ceramic by extrusion and subsequent heat treatment
Creators: name: Habelitz, Stefan
name: Carl, Gunter
name: Rüssel, Christian
name: Marchetti, Kurt
name: Roeder, Erwin
name: Eifler, Dieter
name: Hergt, Rudolph
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Glass-ceramics with oriented mica crystals have been produced by extruding a fluorophlogopite glass and subsequent therma treatment. During extrusion predominantly the intermediate phase norbergite (Mg₃F₂SiO₄) and besides small quantities of phlogo pite mica crystals (Na/KMg₃F₂Si₃AlO₁₀) crystallized. Heat treatments at temperatures around the maximum crystallization rat resulted in an oriented crystallization of phlogopite as proved by electron microscopy and XRD analysis. The plate-like crystals ar aligned with their basal planes parallel to the direction of extrusion. The degree of orientation was studied by X-ray pole figur measurements. The (003) planes show strong ring-fibre texture. The degree of orientation decreased if the crystallization was realize at lower temperatures and lower crystallization rates. The alignment mechanism is discussed.
Time as a quantum observable
Creators: name: Olkhovsky, V. S.
name: Recami, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Some results are reviewed and developments are presented on the study of Time in quantum mechanics as an observable, canonically conjugate to energy. Operators for the observable Time are investigated in particle and photon quantum theory. In particular, this paper deals with the hermitian (more precisely, maximal hermitian, but non-selfadjoint) operator for Time which appears: (i) for particles, in ordinary non-relativistic quantum mechanics; and (ii) for photons, in first-quantization quantum electrodynamics.
description: 19 pages, including two Figures. [The source-file is in Word]
Performance Survey of Silicone-Sealed Concrete Pavement Joints
Creators: name: Hunsucker, David Q.
name: Courtney, Edgar E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: This report summarizes field inspections of various silicone-sealed concrete pavement joints. A list of silicone sealant projects was provided by the Kentucky Transportation Cabinet. Observations of performance were subjective and qualitative.
Invariant Neural Network Ansatz for weakly symmetric Open Quantum Lattices
Creators: name: Nigro, Davide
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider $d$-dimensional open quantum lattices whose time evolution is governed by a master equation which is weakly symmetric under the action of a finite group $G$ that is a subgroup of all the possible permutations of the lattice sites. We show that, whenever the steady state is unique, one can introduce a neural network representation for the system density operator that explicitly accounts for the system symmetries and can be efficiently optimized by exploring only a relevant subspace of the parameter space. In particular, as a proof of principle, we demonstrate the validity of our approach by determining the steady state structure of the one dimensional dissipative XYZ model in the presence of a uniform magnetic field.
Treatment of cooling waters containing glass from glass manufacturing plants for recycling
Creators: name: Vitolo, Sandra
name: Bresci, Bruno
name: Pini, Roberto
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: The removal of the fme particles of glass in Suspension in cooling waters having different solids content has been conducted by flocculation with two different additives, Sedimentation and filtration. The process proposed allows the recycling of these waters; it may suggest a more efficient management and use of water in the glass industry. Among the different types of additives investigated, a particular type of Polyacrylamide has shown the best results, both in the capacity of clarification and Sedimentation of the fme suspended particles, and in the feasibility of the filtration process.
Acoustic Emission Monitoring of In-Service Bridges
Creators: name: Hopwood, Theodore
name: Prine, David W.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: An experimental acoustic emission (AE) device, the GARD Acoustic Emission Weld Monitor (AEWM), has been field tested on six bridges during this study. In addition, the device was used to test three other bridges under separate contracts from state highway agencies. The device was evaluated to determine if it could detect fatigue-crack growth on in-service steel bridges.  The AEWM employs a proprietary three-step model (filter) to reject noise-related AE activity and detect and locate defects subject to varying stress conditions. The unit uses built-in microprocessors to compare incoming data to the model. If defect-related AE activity is detected, the AEWM will notify the operator and locate the defect in relation to AE sensors placed on the test specimen.  The device rejects high background noise rates typical of bridges and detects and locates AE activity from known defects such as cracks and subsurface flaws. The AEWM functioned properly in every field test situation to which it was applied.  The device has demonstrated capability to perform AE tests on in-service bridges. It may be used to detect hidden defects or to assist in making repair decisions concerning detected discontinuities. The AEWM and AE testing have the potential for low-cost inspection of critical bridge members.
Rheological investigations in the decomposition ränge of the system Na₂O-B₂O₃-SiO₂
Creators: name: Eberstein, Markus
name: Habeck, Andreas
name: Brückner, Rolf
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Three glass melts from the Vycor-type widely distributed along the mixing gap of the pseudobinary line SiO₂-(B₂O₃:Na₂O = 84:16) were invesdgated each one with three different thermal histories. The following rheological properties were determined by the cylinder compression method: the Newtonian and non-Newtonian flow behaviour, the stress generadon modulus as a measure of the stiffness, the high-temperature tensile strength and the critical deformation rate at which the first crack appears. The influences of the fundamental glass compositions (SiO₂ content) as well as the thermal pretreatments on these properties are demonstrated and discussed on the basis of isochomal conditions (equal Newtonian viscosities). The results can be interpreted by means of the knowledge about the demixing rules and processes which lead to various rheological two-phase Systems. Most drastical changes of the rheological properties are observed in the middle of the mixing gap where spinodal decomposidon has its optimum and where he differentation between the matrix phase and decomposed phase is lost.
A Survey of States' Aggregate Soundness Specifications and Test Methods
Creators: name: Hunsucker, David Q.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: This report summarizes findings of a national survey to determine aggregate durability test methods and specification requirements of the various states. Also included are specifications and test methods concerning allowable shale contents in aggregates and requirements for percentages of crushed particles in aggregates.
Zeroth Law in Quantum Thermodynamics at Strong Coupling: `in Equilibrium', not `Equal Temperature'
Creators: name: Hsiang, Jen-Tsung
name: Hu, Bei-Lok
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The zeroth law of thermodynamics involves a transitivity relation (pairwise between three objects) expressed either in terms of `equal temperature' (ET), or `in equilibrium' (EQ) conditions. In conventional thermodynamics conditional on vanishingly weak system-bath coupling these two conditions are commonly regarded as equivalent. In this work we show that for thermodynamics at strong coupling they are inequivalent: namely, two systems can be in equilibrium and yet have different effective temperatures. A recent result \cite{NEqFE} for Gaussian quantum systems shows that an effective temperature $T^{*}$ can be defined at all times during a system's nonequilibrium evolution, but because of the inclusion of interaction energy, after equilibration the system's $T^*$ is slightly higher than the bath temperature $T_{\textsc{b}}$, with the deviation depending on the coupling. A second object coupled with a different strength with an identical bath at temperature $T_{\textsc{b}}$ will not have the same equilibrated temperature as the first object. Thus $ET \neq EQ $ for strong coupling thermodynamics. We then investigate the conditions for dynamical equilibration for two objects 1 and 2 strongly coupled with a common bath $B$, each with a different equilibrated effective temperature. We show this is possible, and prove the existence of a generalized fluctuation-dissipation relation under this configuration. This affirms that `in equilibrium' is a valid and perhaps more fundamental notion which the zeroth law for quantum thermodynamics at strong coupling should be based on. Only when the system-bath coupling becomes vanishingly weak that `temperature' appearing in thermodynamic relations becomes universally defined and makes better physical sense.
description: 22 pages, 2 figures
Level Density and Radiative Strength functions of Dipole gamma-Transitions in Ba-139 and Dy-165
Creators: name: Khitrov, V. A.
name: Sukhovoj, A. M.
name: Khang, Pham Dinh
name: Tan, Vuong Huu
name: Hai, Nguyen Xuan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Level density and radiative strength functions which allow precise reproduction of the two-step cascade intensity, gamma width of compound state and cascade population of levels up to excitation energy of about 3.5 MeV were determined using experimental data on the (n,2gamma) reaction. Level density in these nuclei (like in other even-odd nuclei studied earlier) in wide excitation energy interval is considerably less than that predicted by Fermi-gas model. Enhancement of the radiative strength functions, caused by strong correlations between cascade gamma-decay parameters, most probably, relates with the change in ratio between the quasi-particle and collective components of the wave functions of the cascade intermediate levels in the region of most strong change in their density.
description: 7 pages, 5 figures