cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
First Demonstration of Robust Tri-Gate \b{eta}-Ga2O3 Nano-membrane Field-Effect Transistors Operated Up to 400 °C
Creators: name: Bae, Hagyoul
name: Park, Tae Joon
name: Noh, Jinhyun
name: Chung, Wonil
name: Si, Mengwei
name: Ramanathan, Shriram
name: Ye, Peide D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Nano-membrane tri-gate beta-gallium oxide (\b{eta}-Ga2O3) field-effect transistors (FETs) on SiO2/Si substrate fabricated via exfoliation have been demonstrated for the first time. By employing electron beam lithography, the minimum-sized features can be defined with a 50 nm fin structure. For high-quality interface between \b{eta}-Ga2O3 and gate dielectric, atomic layer-deposited 15-nm-thick aluminum oxide (Al2O3) was utilized with Tri-methyl-aluminum (TMA) self-cleaning surface treatment. The fabricated devices demonstrate extremely low subthreshold slope (SS) of 61 mV/dec, high drain current (IDS) ON/OFF ratio of 1.5 X 109, and negligible transfer characteristic hysteresis. We also experimentally demonstrated robustness of these devices with current-voltage (I-V) characteristics measured at temperatures up to 400 °C.
description: 5 pages, 6 figures
Relative velocities among accreting planetesimals in binary systems: the circumbinary case
Creators: name: Scholl, Hans
name: Marzari, Francesco
name: Thebault, Philippe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We numerically investigate the possibility of planetesimal accretion in circumbinary disks, under the coupled influence of both stars' secular perturbations and friction due to the gaseous component of the protoplanetary disk. We focus on one crucial parameter: the distribution of encounter velocities between planetesimals in the 0.5 to 100km size range. An extended range of binary systems with differing orbital parameters is explored. The resulting encounter velocities are compared to the threshold velocities below which the net outcome of a collision is accumulation into a larger body instead of mass erosion. For each binary configuration, we derive the critical radial distance from the binary barycenter beyond which planetesimal accretion is possible. This critical radial distance is smallest for equal-mass binaries on almost circular orbits. It shifts to larger values for increasing eccentricities and decreasing mass ratio. The importance of the planetesimals' orbital alignments of planetesimals due to gas drag effects is discussed.
description: accepted for publication in MNRAS
Interference effects in the counting statistics of electron transfers through a double quantum dot
Creators: name: Welack, Sven
name: Esposito, Massimiliano
name: Harbola, Upendra
name: Mukamel, Shaul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of quantum interferences and Coulomb interaction on the counting statistics of electrons crossing a double quantum dot in a parallel geometry using a generating function technique based on a quantum master equation approach. The skewness and the average residence time of electrons in the dots are shown to be the quantities most sensitive to interferences and Coulomb coupling. The joint probabilities of consecutive electron transfer processes show characteristic temporal oscillations due to interference. The steady-state fluctuation theorem which predicts a universal connection between the number of forward and backward transfer events is shown to hold even in the presence of Coulomb coupling and interference.
description: 11 pages, 12 figures
Stripe order and diode effect in two-dimensional Rashba superconductors
Creators: name: Aoyama, Kazushi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In two-dimensional superconductors with a Rashba-type spin-orbit coupling, it is known that an in-plane magnetic field can induce a helical superconducting (SC) state with a phase modulation $e^{i {\bf q}\cdot {\bf r}}$. Here, we theoretically investigate the stability of a stripe order, a weight-biased superposition state composed of $+{\bf q}$ and $-{\bf q}$ modes taking the form of $Δ_+ e^{i{\bf q}\cdot{\bf r}}+Δ_- e^{-i{\bf q}\cdot{\bf r}}$ with $|Δ_+|\neq|Δ_-|\neq 0$, assuming that the spin-singlet pairing channel is dominant. Based on the Ginzburg-Landau theory, we show that for both s-wave and d-wave pairing symmetries, the stripe order can appear in the high-field and low-temperature region inside the helical phase and that the transition between the helical and stripe phases is of second order. It is noteworthy that for the d-wave pairing, the stability region of the stripe phase shrinks when the in-plane field is rotated from the nodal direction to the anti-nodal direction. It is also found that the nonreciprocity of the critical current, the so-called SC diode effect, emerges not only in the helical phase but also in the stripe phase, with no clear nonreciprocity anomaly at the helical-stripe transition due to its second-order nature.
description: 11 pages, 8 figures
Creative elements: network-based predictions of active centres in proteins, cellular and social networks
Creators: name: Csermely, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Active centres and hot spots of proteins have a paramount importance in enzyme action, protein complex formation and drug design. Recently a number of publications successfully applied the analysis of residue networks to predict active centres in proteins. Most real-world networks show a number of properties, such as small-worldness or scale-free degree distribution, which are rather general features of networks, from molecules to society at large. Using analogy I propose that existing findings and methodology already enable us to detect active centres in cells, and can be expanded to social networks and ecosystems. Members of these active centres are termed here as creative elements of their respective networks, which may help them to survive unprecedented, novel challenges, and play a key role in the development, survival and evolvability of complex systems.
description: This contribution extends the content of a Nature Journal Club paper (Nature 454:5) having 10 pages, 1 Figure and 50 references. It is the cover story of the 2008 December Trends in Biochemical Sciences issue
Werner Schwarz, Pommersche Musikgeschichte. Teil II: Lebensbilder von Musikern in und aus Pommern
Creators: name: Unverricht, Hubert
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Data Augmentation Using Many-To-Many RNNs for Session-Aware Recommender Systems
Creators: name: Alonso, Martín Baigorria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The ACM WSDM WebTour 2021 Challenge organized by Booking.com focuses on applying Session-Aware recommender systems in the travel domain. Given a sequence of travel bookings in a user trip, we look to recommend the user's next destination. To handle the large dimensionality of the output's space, we propose a many-to-many RNN model, predicting the next destination chosen by the user at every sequence step as opposed to only the final one. We show how this is a computationally efficient alternative to doing data augmentation in a many-to-one RNN, where we consider every subsequence of a session starting from the first element. Our solution achieved 4th place in the final leaderboard, with an accuracy@4 of 0.5566.
Locarno und Osteuropa. Fragen eines europäischen Sicherheitssystems in den 20er Jahren
Creators: name: Obermeier, Jan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Mass gap for gravity localized on Weyl thick branes
Creators: name: Barbosa-Cendejas, N.
name: Herrera-Aguilar, A.
name: Reyes, M. A.
name: Schubert, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the properties of a previously found family of thick brane configurations in a pure geometric Weyl integrable 5D space time, a non-Riemannian generalization of Kaluza-Klein (KK) theory involving a geometric scalar field. Thus the 5D theory describes gravity coupled to a self-interacting scalar field which gives rise to the structure of the thick branes. Analyzing the graviton spectrum for this class of models, we find that a particularly interesting situation arises for a special case in which the 4D graviton is separated from the KK gravitons by a mass gap. The corresponding effective Schroedinger equation has a modified Poeschl-Teller potential and can be solved exactly. Apart from the massless 4D graviton, it contains one massive KK bound state, and the continuum spectrum of delocalized KK modes. We discuss the mass hierarchy problem, and explicitly compute the corrections to Newton's law in the thin brane limit.
description: 6 pages in Revtex, no figures, journal version, significately revised and extended
"No Information Without Disturbance": Quantum Limitations of Measurement
Creators: name: Busch, Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this contribution I review rigorous formulations of a variety of limitations of measurability in quantum mechanics. To this end I begin with a brief presentation of the conceptual tools of modern measurement theory. I will make precise the notion that quantum measurements necessarily alter the system under investigation and elucidate its connection with the complementarity and uncertainty principles.
description: Invited contribution, "Quantum Reality, Relativistic Causality, and Closing the Epistemic Circle: An International Conference in Honour of Abner Shimony", Perimeter Institute, Waterloo, Ontario, Canada, July 18-21, 2006, Editors J. Christian, W.Myrvold, Springer-Verlag, 2008, ISSN: 978-1-4020-9106
I Policrati ibicei. Ibico, Anacreonte, Policrate e la cronografia dei poeti della "corte" di Samo
Creators: name: Ornaghi, Massimiliano
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Ancient chronography is a stratified kind of literature: the texts which  preserve informations about (archaic or classic) poets and their times  are, nearly always, Hellenistic and post Hellenistic and take forms of  datation and year-reckoning (or epoch-reckoning) very different from  those used in archaic Greece. The Olympic quadriennium, for instance, is  fixed as chronographic element only by Eratosthenes; in archaic and  classic Greek poleis official kinds of datation were above all eponymic  and intervals from events (and people) of the past were determined by  synchronizations and connections with other events (and people),  well-known. Chronographic sources (Eusebius, Suda etc.) preserve a large  amount of informations which join "ancient" and "new" forms of  datation. The informations about Ibycus, Anacreon and Polycrates (and  his father), in particular, show that the different olympic datations  result from the same chronological relationships, applied to different  points of synchronization; and distortions could derive from mutual  attraction of these unequal chronological grids. The ancient  informations about the two poets were, very probably, the  synchronization between Ibycus and the father of Polycrates and between  Anacreon and the great tyrant.
description: Annali Online  Lettere - Ferrara, III 1 (2008)
Bacteria hinder large-scale transport and enhance small-scale mixing in time-periodic flows
Creators: name: Ran, Ranjiangshang
name: Brosseau, Quentin
name: Blackwell, Brendan C.
name: Qin, Boyang
name: Winter, Rebecca
name: Arratia, Paulo E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Understanding mixing and transport of passive scalars in active fluids is important to many natural (e.g. algal blooms) and industrial (e.g. biofuel, vaccine production) processes. Here, we study the mixing of a passive scalar (dye) in dilute suspensions of swimming Escherichia coli in experiments using a two-dimensional (2D) time-periodic flow and in a simple simulation. Results show that the presence of bacteria hinders large scale transport and reduce overall mixing rate. Stretching fields, calculated from experimentally measured velocity fields, show that bacterial activity attenuates fluid stretching and lowers flow chaoticity. Simulations suggest that this attenuation may be attributed to a transient accumulation of bacteria along regions of high stretching. Spatial power spectra and correlation functions of dye concentration fields show that the transport of scalar variance across scales is also hindered by bacterial activity, resulting in an increase in average size and lifetime of structures. On the other hand, at small scales, activity seems to enhance local mixing. One piece of evidence is that the probability distribution of the spatial concentration gradients is nearly symmetric with a vanishing skewness. Overall, our results show that the coupling between activity and flow can lead to nontrivial effects on mixing and transport.
description: Supplementary Information added
Kontakte und Konflikte. Böhmen, Mähren und Österreich: Aspekte eines Jahrtausends gemeinsamer Geschichte
Creators: name: Prinz, Friedrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 1 (1995)
Guadua weberbaueri
Creators: name: Sherer, Alexander
name: Raghuraman, Savitri
name: Nakahara, Shinichi
name: Gallice, Geoffrey
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Poales
Poaceae
Guadua
Guadua weberbaueri

description: Host plant Guadua weberbaueri
Immature stages of X. orchamus, D. dubia, and T. canta were collected from a stand of G. weberbaueri plants found on property adjacent to FLP (Figure 5). Guadua weberbaueri is a large, clumping bamboo species that grows in open, disturbed tropical lowland forest throughout the region, as well as in large stands embedded within less disturbed forest areas. The stand of G. weberbaueri on which immature butterflies were found in this study was located near a fragment of swamp habitat dominated by the palm Mauritiua flexuosa and surrounded by heavily disturbed agricultural land with sparse tree cover. Other similarly-sized and larger stands of G. weberbaueri are also present in the area surrounding FLP.
The larva of X. orchamus was collected from the abaxial side of a moderately damaged leaf approximately 0.5 meters above the ground, positioned evenly between the midrib and the margin near the apex of the leaf. The larva of D. dubia was found approximately 1.6 meters above the ground on the abaxial side of an undamaged leaf, and the individual was situated at the apex of the leaf along the midrib. Finally, the larva of T. canta was collected from a leaf with light damage approximately 0.4 meters above the ground, positioned adaxially along the margin between the apex and base of the leaf. Larvae of all three species were found on mature leaves.
description: Published as part of Sherer, Alexander, Raghuraman, Savitri, Nakahara, Shinichi & Gallice, Geoffrey, 2025, Immature stages and host plant records for the skipper butterflies Xeniades orchamus (Cramer, 1777), Dubia dubia (Bell, 1932), and Tricrista canta (Evans, 1955) in the Peruvian Amazon (Lepidoptera: Hesperiidae: Hesperiinae: Hesperiini), pp. 390-404 in Zootaxa 5609 (3) on page 398, DOI: 10.11646/zootaxa.5609.3.5, http://zenodo.org/record/15215282
Wilhelm Zeil, Slawistik in Deutschland. Forschungen und Informationen über die Sprachen, Literaturen und Volkskulturen slawischer Völker bis 1945
Creators: name: Schaller, Helmut Wilhelm
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Arm-Locking Frequency Noise Suppression for Astronomical Middle-Frequency Interferometric Gravitational Wave Observatory
Creators: name: Nian, Jun
name: Ni, Wei-Tou
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For space gravitational wave (GW) detection, arm locking is a proposal useful in decreasing the frequency noise of the laser sources for current developing space missions LISA and Taiji/TianQin. In this paper, we study the application of arm locking to the Astrodynamical Middle-frequency Interferometric Gravitational wave Observatory (AMIGO) to decrease the frequency noise of laser sources. For AMIGO, the arm-locking technique can suppress the laser frequency noise by three orders of magnitude. The advantage of this is to make the auxiliary noise assignment for AMIGO easier and more relaxed. For the first-generation time-delay interferometry (TDI) configuration, the laser frequency noise contribution is already below the core noise contribution. For the simple Michelson TDI configuration (X0), the arm locking makes the acceleration-thrust scheme, the delay-line scheme, or the combined scheme easier to implement. Within a relatively short period of less than a day (compared to less than twenty days for LISA/Taiji), the Doppler frequency pulling can be efficiently reduced to within $\pm$ 0.001 Hz and does not affect the mission duty cycle much.
description: 27 pages, 21 figures; V2: More details are added, and the main results remain the same
Efficiently Simulating Higher-Order Arithmetic by a First-Order Theory Modulo
Creators: name: Burel, Guillaume
Publisher: name: arXiv
Year: 2008
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: cs.CC

description: In deduction modulo, a theory is not represented by a set of axioms but by a congruence on propositions modulo which the inference rules of standard deductive systems---such as for instance natural deduction---are applied. Therefore, the reasoning that is intrinsic of the theory does not appear in the length of proofs. In general, the congruence is defined through a rewrite system over terms and propositions. We define a rigorous framework to study proof lengths in deduction modulo, where the congruence must be computed in polynomial time. We show that even very simple rewrite systems lead to arbitrary proof-length speed-ups in deduction modulo, compared to using axioms. As higher-order logic can be encoded as a first-order theory in deduction modulo, we also study how to reinterpret, thanks to deduction modulo, the speed-ups between higher-order and first-order arithmetics that were stated by Gödel. We define a first-order rewrite system with a congruence decidable in polynomial time such that proofs of higher-order arithmetic can be linearly translated into first-order arithmetic modulo that system. We also present the whole higher-order arithmetic as a first-order system without resorting to any axiom, where proofs have the same length as in the axiomatic presentation.
Influence of a single defect on the conductance of a tunnel point contact between a normal metal and a superconductor
Creators: name: Avotina, Ye. S.
name: Kolesnichenko, Yu. A.
name: van Ruitenbeek, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated theoretically the conductance of a Normal-Superconductor point-contact in the tunnel limit and analyzed the quantum interference effects originating from the scattering of quasiparticles by point-like defects. Analytical expressions for the oscillatory dependence of the conductance on the position of the defect are obtained for the defect situated either in the normal metal, or in the superconductor. It is found that the amplitude of oscillations significantly increases when the applied bias approaches the gap energy of the superconductor. The spatial distribution of the order parameter near the surface in the presence of a defect is also obtained.
description: 13 pages, 4 figures
Model for monitoring of a charge qubit using a radio-frequency quantum point contact including experimental imperfections
Creators: name: Oxtoby, Neil P.
name: Gambetta, Jay
name: Wiseman, H. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The extension of quantum trajectory theory to incorporate realistic imperfections in the measurement of solid-state qubits is important for quantum computation, particularly for the purposes of state preparation and error-correction as well as for readout of computations. Previously this has been achieved for low-frequency (dc) weak measurements. In this paper we extend realistic quantum trajectory theory to include radio frequency (rf) weak measurements where a low-transparency quantum point contact (QPC), coupled to a charge qubit, is used to damp a classical oscillator circuit. The resulting realistic quantum trajectory equation must be solved numerically. We present an analytical result for the limit of large dissipation within the oscillator (relative to the QPC), where the oscillator slaves to the qubit. The rf+dc mode of operation is considered. Here the QPC is biased (dc) as well as subjected to a small-amplitude sinusoidal carrier signal (rf). The rf+dc QPC is shown to be a low-efficiency charge-qubit detector, that may nevertheless be higher than the dc-QPC (which is subject to 1/f noise).
description: 12 pages, 2 colour figures. v3 is published version (minor changes since v2)
Assessment of luggage compartment parameters based on the preferences of a heterogeneous driver group
Creators: name: Hruška, M.
Publisher: name: Agronomy Research
Year: 2019
Subjects: driver
luggage space
vehicle
gender
age
article

description: This work deals with the assessment of driver preferences in the area of passenger car luggage compartments. The data collected is compared to that of real vehicles from the full range of passenger cars available on the European market. The data used for the research described in this work was obtained using a questionnaire survey on a large heterogeneous group of drivers in the Czech Republic. All of the research participants had three categories of vehicles available during testing - for better imagination and the possibility of personal comparison of parameters. The collected data was subsequently subjected to statistical evaluation, where mainly statistically significant dependencies in the preferences of individual drivers were sought out given their personal and anthropometric parameters. On the basis of the statistical evaluation of the obtained data, a difference was found in the preferences of the types and dimensions of the individual luggage compartments for the individual respondents depending on the selected parameters. The results of this work can be used in the process of designing luggage compartments of passenger cars, in particular with regard to the specific needs of drivers. The results of the work could thus contribute to improving the safety in handling cargo in the luggage compartments of vehicles and to improving health protection.
Francesca Tomasi, Metodologie informatiche per le discipline umanistiche, prefazione di Dino Buzzetti. Roma. Carocci editore. Manuali universitari (Linguistica)/59. 2008. pp. 256. ISBN 978-88-430-4303-3
Creators: name: Iannucci, Alessandro
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Annali Online  Lettere - Ferrara, III 1 (2008)
Ritterorden und Region. Politische, soziale und wirtschaftliche Verbindungen im Mittelalter
Creators: name: Michels, Georg
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Idioma e trauma: alcuni esempi per un dibattito letterario intorno alla crisi della rappresentazione
Creators: name: Melotto, Raoul
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: This article attempts to address the problem of representation: in  particular the re-working of memories linked to a trauma. Regarding the collective trauma of concentration camps, two  contradictory forms of memory criticism have been employed: on the one  hand the deconstruction matrix favoured in France by Lyotard, or the  existentialist matrix used in Germany by Heidegger; on the other hand  the poetic forms connected to the personal experience of survivors  (Celan, Sebald). Therefore, the article concentrates on highlighting different strategies  assigned to the language understood as native language, national  language or traditional language.  This very language now lends itself to becoming a factor of identity and  freedom or, in other cases, a way of disguising the real contents of  existence.
description: Annali Online  Lettere - Ferrara, I 2 (2006)
Explainable Machine Learning using Real, Synthetic and Augmented Fire Tests to Predict Fire Resistance and Spalling of RC Columns
Creators: name: Naser, M. Z.
name: Kodur, V. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper presents the development of systematic machine learning (ML) approach to enable explainable and rapid assessment of fire resistance and fire-induced spalling of reinforced concrete (RC) columns. The developed approach comprises of an ensemble of three novel ML algorithms namely; random forest (RF), extreme gradient boosted trees (ExGBT), and deep learning (DL). These algorithms are trained to account for a wide collection of geometric characteristics and material properties, as well as loading conditions to examine fire performance of normal and high strength RC columns by analyzing a comprehensive database of fire tests comprising of over 494 observations. The developed ensemble is also capable of presenting quantifiable insights to ML predictions; thus, breaking free from the notion of 'blackbox' ML and establishing a solid step towards transparent and explainable ML. Most importantly, this work tackles the scarcity of available fire tests by proposing new techniques to leverage the use of real, synthetic and augmented fire test observations. The developed ML ensemble has been calibrated and validated for standard and design fire exposures and for one, two, three and four-sided fire exposures thus; covering a wide range of practical scenarios present during fire incidents. When fully deployed, the developed ensemble can analyze over 5,000 RC columns in under 60 seconds thus, providing an attractive solution for researchers and practitioners. The presented approach can also be easily extended for evaluating fire resistance and spalling of other structural members and under varying fire scenarios and loading conditions and hence paves the way to modernize the state of this research area and practice.
An Accretion-Disc Model for the Algol-Type Eclipsing Binary System AV Del
Creators: name: Ghoreyshi, Sayyed Mohammad Reza
name: Ghanbari, Jamshid
name: Salehi, Fatemeh
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This study inspects the light and radial-velocity curves of the eclipsing binary AV Del. In comparison with other studies already done, the study shows that the absolute elements, fundamental orbital and physical parameters of the system can be determined using the Wilson-Devinney code. Using these parameters, the configuration of the system is presented. Then, an accretion disc model for the system is introduced by using the SHELLSPEC code. The results indicate that AV Del is a semi-detached system in which an optically thick accretion disc is surrounding the primary star. The outer radius of the disc is 8.0 R_sun}, corresponding to a distance of 1.1 R_sun} from the surface of the secondary. Also, the temperature of the disc is calculated to be T=5700 K.
description: 11 pages, 6 figures, 6 tables. Published in "Publications of the Astronomical Society of Australia"
Topology and many-body localization
Creators: name: Bhatt, R. N.
name: Krishna, Akshay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the problem of localization in two dimensional electron systems in the quantum Hall (single Landau level) regime. After briefly summarizing the well-studied problem of Anderson localization in the non-interacting case, we concentrate on the problem of disorder induced many-body localization (MBL) in the presence of electron-electron interactions using numerical exact diagonalization and eigenvalue spacing statistics as a function of system size. We provide evidence showing that MBL is not attainable in a single Landau level with short range (white noise) disorder in the thermodynamic limit. We then study the interplay of topology and localization, by contrasting the behavior of topological and nontopological subbands arising from a single Landau level in two models - (i) a pair of extremely flat Hofstadter bands with an optimally chosen periodic potential, and (ii) a Landau level with a split-off nontopological impurity band. Both models provide convincing evidence for the strong effect of topology on the feasibility of many-body localization as well as slow dynamics starting from a nonequilibrium state with charge imbalance.
description: This is the preprint of an article that has been accepted to a forthcoming Special Issue of the Annals of Physics. The Special Issue will contain Proceedings of the Localisation 2020 conference and is dedicated to Philip W. Anderson. The DOI links to the final version in press
Compound databases
Creators: name: Schulze, Tobias
Publisher: name: Zenodo
Year: 2019
Subjects: Compound database
Environmental chemistry
Compound identification
NORMAN Suspect List Exchange
CompTox Dashboard
PubChem
Ecotox Knowledgebase
Open Data
WikiData
NaToxAq

description: This presentation contains a lecture about compound databases given at the NaToxAq Summerschool in Leipzig (Germany). The presentation includes an overview of major existing compound databases relevant for environmental sciences. I discuss the upcoming role of Wikipedia and WikiData as a good source for chemical compound identification and information. In some examples, the access to PubChem, CompTox Dashboard and to the Ecotox Knowledgbase is shown. In the next part I introduce basicallly API functions for automated retrieval of the databases. Finally, the presentation raises the question of Open Data and FAIR and how to contribute to Open Data community. I suggest here to submit lists of environmental relevant compounds to the NORMAN suspect list exchange (https://www.norman-network.com/nds/SLE/). SLE will register the compounds in CompTox Dashboard.
Adaptive Latent Diffusion Model for 3D Medical Image to Image Translation: Multi-modal Magnetic Resonance Imaging Study
Creators: name: Kim, Jonghun
name: Park, Hyunjin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Multi-modal images play a crucial role in comprehensive evaluations in medical image analysis providing complementary information for identifying clinically important biomarkers. However, in clinical practice, acquiring multiple modalities can be challenging due to reasons such as scan cost, limited scan time, and safety considerations. In this paper, we propose a model based on the latent diffusion model (LDM) that leverages switchable blocks for image-to-image translation in 3D medical images without patch cropping. The 3D LDM combined with conditioning using the target modality allows generating high-quality target modality in 3D overcoming the shortcoming of the missing out-of-slice information in 2D generation methods. The switchable block, noted as multiple switchable spatially adaptive normalization (MS-SPADE), dynamically transforms source latents to the desired style of the target latents to help with the diffusion process. The MS-SPADE block allows us to have one single model to tackle many translation tasks of one source modality to various targets removing the need for many translation models for different scenarios. Our model exhibited successful image synthesis across different source-target modality scenarios and surpassed other models in quantitative evaluations tested on multi-modal brain magnetic resonance imaging datasets of four different modalities and an independent IXI dataset. Our model demonstrated successful image synthesis across various modalities even allowing for one-to-many modality translations. Furthermore, it outperformed other one-to-one translation models in quantitative evaluations.
description: 8 pages, 7 figures, WACV 2024 Accepted
Monte Carlo evaluation of the continuum limit of the two-point function of two Euclidean Higgs real scalar fields subject to affine quantization
Creators: name: Fantoni, Riccardo
name: Klauder, John R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study canonical and affine versions of the quantized covariant Euclidean Higgs scalar field-theory for two real fields on four dimensional lattices through the Monte Carlo method. We calculate the two-point function near the continuum limit at finite volume.
description: 18 pages, 6 figures. arXiv admin note: text overlap with arXiv:2103.06746
"Due persone che ballano insieme lentamente": immagine e suono nell'ultimo cinema di Wong Kar-wai
Creators: name: Pavesi, Diletta
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Even if the critics usually emphasize Wong's visual skills, his ability  to catch the public in an elegant and refined universe, we must say that  also music plays a leading role in these films. The importance of music  in the author's cinema, as the literary influences, hasn't been  completely investigated. In every opera Wong tries to realize a  soundtrack able, on one side, to recreate the atmosphere of the period,  and, on the other side, to evoke the melodramatic tune of the sad love  stories he tells. In this way Wong Kar-wai creates not only great visual  paintings, but also great musical mosaics.
description: Annali Online  Lettere - Ferrara, I 2 (2006)
Body and Head Orientation Estimation from Low-Resolution Point Clouds in Surveillance Settings
Creators: name: Tepencelik, Onur N.
name: Wei, Wenchuan
name: Cosman, Pamela C.
name: Dey, Sujit
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose a system that estimates people's body and head orientations using low-resolution point cloud data from two LiDAR sensors. Our models make accurate estimations in real-world conversation settings where subjects move naturally with varying head and body poses, while seated around a table. The body orientation estimation model uses ellipse fitting while the head orientation estimation model combines geometric feature extraction with an ensemble of neural network regressors. Our models achieve a mean absolute estimation error of 5.2 degrees for body orientation and 13.7 degrees for head orientation. Compared to other body/head orientation estimation systems that use RGB cameras, our proposed system uses LiDAR sensors to preserve user privacy, while achieving comparable accuracy. Unlike other body/head orientation estimation systems, our sensors do not require a specified close-range placement in front of the subject, enabling estimation from a surveillance viewpoint which produces low-resolution data. This work is the first to attempt head orientation estimation using point clouds in a low-resolution surveillance setting. We compare our model to two state-of-the-art head orientation estimation models that are designed for high-resolution point clouds, which yield higher estimation errors on our low-resolution dataset. We also present an application of head orientation estimation by quantifying behavioral differences between neurotypical and autistic individuals in triadic (three-way) conversations. Significance tests show that autistic individuals display significantly different behavior compared to neurotypical individuals in distributing attention between conversational parties, suggesting that the approach could be a component of a behavioral analysis or coaching system.
description: This file corresponds to the accepted version of the manuscript published in IEEE ACCESS, 2024
A revised view of the linear polarization in the subparsec core of M87 at 7 mm
Creators: name: Park, Jongho
name: Asada, Keiichi
name: Nakamura, Masanori
name: Kino, Motoki
name: Pu, Hung-Yi
name: Hada, Kazuhiro
name: Kravchenko, Evgeniya V.
name: Giroletti, Marcello
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The linear polarization images of the jet in the giant elliptical galaxy M87 have previously been observed with Very Long Baseline Array at 7 mm. They exhibit a complex polarization structure surrounding the optically thick and compact subparsec-scale core. However, given the low level of linear polarization in the core, it is required to verify that this complex structure does not originate from residual instrumental polarization signals in the data. We have performed a new analysis of the same data sets observed in four epochs by using the Generalized Polarization CALibration pipeline (GPCAL). This novel instrumental polarization calibration pipeline overcomes the limitations of LPCAL, a conventional calibration tool used in the previous M87 studies. The resulting images show a compact linear polarization structure with its peak nearly coincident with the total intensity peak, which is significantly different from the results of previous studies. The core linear polarization is characterized as fractional polarization of $\sim0.2-0.6$% and polarization angles of $\sim66-92^\circ$, showing moderate variability. We demonstrate that, based on tests with synthetic data sets, LPCAL using calibrators having complex polarization structures cannot achieve sufficient calibration accuracy to obtain the true polarization image of M87 due to a breakdown of the "similarity approximation". We find that GPCAL obtains more accurate D-terms than LPCAL by using observed closure traces of calibrators that are insensitive to both antenna gain and polarization leakage corruptions. This study suggests that polarization imaging of very weakly polarized sources has become possible with the advanced instrumental polarization calibration techniques.
description: 22 pages, 13 figures, 4 tables, accepted for publication in ApJ
Self-dual projective toric varieties
Creators: name: Bourel, Mathias
name: Dickenstein, Alicia
name: Rittatore, Alvaro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14M25, 14N05, 52B20, 14L30

description: Let T be a torus over an algebraically closed field k of characteristic 0, and consider a projective T-module P(V). We determine when a projective toric subvariety X of P(V) is self-dual, in terms of the configuration of weights of V.
description: 26 pages, 1 figure. Minor changes
Revivals in One-dimensional Quantum Walks with a Time and Spin-dependent Phase Shift
Creators: name: Sajid, Muhammad
name: Ain, Qurat ul
name: Qureshi, Hanifa
name: Tayyeba, Tulva
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the role of a time and spin-dependent phase shift on the evolution of one-dimensional discrete-time quantum walks. By employing Floquet engineering, a time and spin-dependent phase shift ($ϕ$) is imprinted onto the walker's wave function while it shifts from one lattice site to another. For a quantum walk driven by the standard protocol we show with our numerical simulations that complete revivals with equal periods occur in the probability distribution of the walk for rational values of the phase factor, i.e., $ϕ/2π= p/q$. For an irrational value of $ϕ/2π$ our results show partial revivals in the probability distribution with unpredictable periods, and the walker remains localized in a small region of the lattice. We further investigate revivals in a split-step quantum walk with a time and spin-dependent phase shift for rational values of $ϕ/2π$. In contrast to the case of standard protocol, the split-step quantum walk shows partial revivals in the probability distribution. Furthermore, in view of an experimental realization we investigate the robustness of revivals against noise in the phase shift. Our results show that signatures of revivals persist for smaller values of the noise parameter, while revivals vanish for larger values. Our work is important in the context of quantum computation where quantum walks with a time and spin-dependent phase shift can be used to control and manipulate a desired quantum state on demand.
description: 10 pages, 4 figures
Mapas de Idoneidad de Hábitat Fluvial Combinada (C) para las especies y estadios seleccionados y los caudales simulados con IberHABITAT dentro del proyecto DRAINAGE
Creators: name: Díaz-Redondo, María
Publisher: name: Zenodo
Year: 2021

description: Documento en el que se incluyen los mapas generados mediante el programa IberHABITAT de la Idoneidad de Hábitat Fluvial Combinada (C) de calados y velocidades. El área de estudio es el tramo del río Duero en el meandro de Argañas (aguas arriba de Zamora); las especies y estadios seleccionados incluyen: barbo adulto, juvenil y alevín, bordallo adulto y alevín, y boga del Duero alevín; los caudales simulados incluyen: caudal medio anual (98,16 m3/s), caudal mínimo anual (37,17 m3/s), valor inferior de los caudales mínimos en condiciones ordinarias (16 m3/s) y Valor inferior de los caudales mínimos en situación de sequía (8 m3/s).
description: This research was funded by the project DRAINAGE, CGL2017–83546–C3–R (MINECO/AEI/FEDER,UE), and it is specifically part of the assessments carried out under the coverage of the sub–project DRAINAGE–2–R (CGL2017–83546–C3–2–R).
Mesoscopic fluctuations of spin currents
Creators: name: Nazarov, Yuli V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin currents may be generated by applying bias voltages V to the nanostructures even in the absence of spin-active ferromagnetic interfaces. Most theoretical proposals concentrate on a concrete spin-orbit interaction and on the disorder-averaged effect. It remains underappreciated that any spin-orbit interaction produces random spin currents with a typical amplitude e^2 V/\hbar not affected by disorder. This work addresses such mesoscopic fluctuations of spin currents for generic model of a nanostructure where several quantum connectors meet in a single node. The analysis is performed in the framework of recently developed quantum circuit theory of G_Q corrections and reveals four distinct mechanisms of spin current fluctuations. The results are elaborated for simple models of tunnel and ballistic connectors.
description: 13 pages, submitted to New J.P
FlowPG: Action-constrained Policy Gradient with Normalizing Flows
Creators: name: Brahmanage, Janaka Chathuranga
name: Ling, Jiajing
name: Kumar, Akshat
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Action-constrained reinforcement learning (ACRL) is a popular approach for solving safety-critical and resource-allocation related decision making problems. A major challenge in ACRL is to ensure agent taking a valid action satisfying constraints in each RL step. Commonly used approach of using a projection layer on top of the policy network requires solving an optimization program which can result in longer training time, slow convergence, and zero gradient problem. To address this, first we use a normalizing flow model to learn an invertible, differentiable mapping between the feasible action space and the support of a simple distribution on a latent variable, such as Gaussian. Second, learning the flow model requires sampling from the feasible action space, which is also challenging. We develop multiple methods, based on Hamiltonian Monte-Carlo and probabilistic sentential decision diagrams for such action sampling for convex and non-convex constraints. Third, we integrate the learned normalizing flow with the DDPG algorithm. By design, a well-trained normalizing flow will transform policy output into a valid action without requiring an optimization solver. Empirically, our approach results in significantly fewer constraint violations (upto an order-of-magnitude for several instances) and is multiple times faster on a variety of continuous control tasks.
Dynamic Spin-Polarized Resonant Tunneling in Magnetic Tunnel Junctions
Creators: name: Miller, Casey W.
name: Li, Zhi-Pan
name: Schuller, Ivan K.
name: Dave, R. W.
name: Slaughter, J. M.
name: Akerman, Johan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Precisely engineered tunnel junctions exhibit a long sought effect that occurs when the energy of the electron is comparable to the potential energy of the tunneling barrier. The resistance of metal-insulator-metal tunnel junctions oscillates with an applied voltage when electrons that tunnel directly into the barrier's conduction band interfere upon reflection at the classical turning points: the insulator-metal interface, and the dynamic point where the incident electron energy equals the potential barrier inside the insulator. A model of tunneling between free electron bands using the exact solution of the Schroedinger equation for a trapezoidal tunnel barrier qualitatively agrees with experiment.
description: 4pgs, 3 figs