cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On moment map and bigness of tangent bundles of $G$-varieties
Creators: name: Liu, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M17, 14M27, 14J45

description: Let $G$ be a connected algebraic group and let $X$ be a smooth projective $G$-variety. In this paper, we prove a sufficient criterion to determine the bigness of the tangent bundle $TX$ using the moment map $Φ_X^G:T^*X\rightarrow \mathfrak{g}^*$. As an application, the bigness of the tangent bundles of certain quasi-homogeneous varieties are verified, including symmetric varieties, horospherical varieties and equivariant compactifications of commutative linear algebraic groups. Finally, we study in details the Fano manifolds $X$ with Picard number $1$ which is an equivariant compactification of a vector group $\mathbb{G}_a^n$. In particular, we will determine the pseudoeffective cone of $\mathbb{P}(T^*X)$ and show that the image of the projectivised moment map along the boundary divisor $D$ of $X$ is projectively equivalent to the dual variety of the VMRT of $X$.
description: 30 pages. Minor changes. Any comments and questions are welcome
Energy and momentum transfer in one-dimensional trapped gases by stimulated light scattering
Creators: name: Fabbri, N.
name: Fort, C.
name: Modugno, M.
name: Rosi, S.
name: Inguscio, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In ultracold atoms settings, inelastic light scattering is a preeminent technique to reveal static and dynamic properties at nonzero momentum. In this work, we investigate an array of one-dimensional trapped Bose gases, by measuring both the energy and the momentum imparted to the system via light scattering experiments. The measurements are performed in the weak perturbation regime, where these two quantities - the energy and momentum transferred - are expected to be related to the dynamical structure factor of the system. We discuss this relation, with special attention to the role of in-trap dynamics on the transferred momentum.
Carbon capture or hazard release? Geoscience opportunities, strategic assets, and a couple of headaches
Creators: name: Fracassi, Umberto
Publisher: name: Zenodo
Year: 2023
Subjects: CCUS
Permafrost thawing
Coastal exposure
Multi-hazard
Population growth

description: EU and global commitments for CO2 reduction include removal of major volumes, to be captured and stored underground. For such efforts to affect current concentrations, CCUS at colossal scale is required, far greater than current pilot projects, and upscaled in the future, as population growth will drive construction, thereby cement and steel, whose emissions are inherently hard-to-abate. However, although promising and needed, massive-scale CCUS is not devoid of potential associated hazards (including induced seismicity), requires unevenly distributed subsurface conditions, and dictates major understanding of pre-existing geophysical processes. Geoscientists must then be centerstage to drive energy policies in these efforts.
Spectral multipliers for sub-Laplacians on solvable extensions of stratified groups
Creators: name: Martini, Alessio
name: Ottazzi, Alessandro
name: Vallarino, Maria
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 22E30, 42B15, 42B20, 43A22

description: Let $G = N \rtimes A$, where $N$ is a stratified group and $A = \mathbb{R}$ acts on $N$ via automorphic dilations. Homogeneous sub-Laplacians on $N$ and $A$ can be lifted to left-invariant operators on $G$ and their sum is a sub-Laplacian $Δ$ on $G$. We prove a theorem of Mihlin-Hörmander type for spectral multipliers of $Δ$. The proof of the theorem hinges on a Calderón-Zygmund theory adapted to a sub-Riemannian structure of $G$ and on $L^1$-estimates of the gradient of the heat kernel associated to the sub-Laplacian $Δ$.
description: 31 pages
Co-universality and controlled maps on product systems over right LCM-semigroups
Creators: name: Kakariadis, Evgenios T. A.
name: Katsoulis, Elias G.
name: Laca, Marcelo
name: Li, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46L08, 46L05

description: We study the structure of C*-algebras associated with compactly aligned product systems over group embeddable right LCM-semigroups. Towards this end we employ controlled maps and a controlled elimination method that associates the original cores to those of the controlling pair, and we combine with applications of the C*-envelope theory for cosystems of nonselfadjoint operator algebras recently produced. We derive several applications of these methods that generalize results on single C*-correspondences. First we show that if the controlling group is exact then the co-universal C*-algebra of the product system coincides with the quotient of the Fock C*-algebra by the ideal of strong covariance relations. We show that if the controlling group is amenable then the product system is amenable. In particular if the controlling group is abelian then the co-universal C*-algebra is the C*-envelope of the tensor algebra. Secondly we give necessary and sufficient conditions for the Fock C*-algebra to be nuclear and exact. When the controlling group is amenable we completely characterize nuclearity and exactness of any equivariant injective Nica-covariant representation of the product system. Thirdly we consider controlled maps that enjoy a saturation property. In this case we induce a compactly aligned product system over the controlling pair that shares the same Fock representation, and preserves injectivity. By using co-universality, we show that they share the same reduced covariance algebras. If in addition the controlling pair is a total order then the fixed point algebra of the controlling group induces a super-product system that has the same reduced covariance algebra and is moreover reversible.
description: 40 pages
Heinz-type mean curvature estimates in Lorentz-Minkowski space
Creators: name: Honda, Atsufumi
name: Kawakami, Yu
name: Koiso, Miyuki
name: Tori, Syunsuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53A10, 53B30, 53C24, 53C42

description: We provide a unified description of Heinz-type mean curvature estimates under an assumption on the gradient bound for space-like graphs and time-like graphs in the Lorentz-Minkowski space. As a corollary, we give a unified vanishing theorem of mean curvature for these entire graphs of constant mean curvature.
description: 11 pages, no figure, minor revision
Spin-dependent thermoelectric effects in transport through a nanoscopic junction involving spin impurity
Creators: name: Misiorny, Maciej
name: Barnaś, Józef
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Conventional and spin-related thermoelectric effects in transport through a magnetic tunnel junction with a large-spin impurity, such as a magnetic molecule or atom, embedded into the corresponding barrier are studied theoretically in the linear-response regime. The impurity is described by the giant spin Hamiltonian, with both uniaxial and transverse magnetic anisotropy taken into account. Owing to the presence of transverse component of magnetic anisotropy, spin of a tunneling electron can be reversed during scattering on the impurity, even in the low temperature regime. This reversal appears due to exchange interaction of tunneling electrons with the magnetic impurity. We calculate Seebeck and spin Seebeck coefficients, and analyze their dependence on various parameters of the spin impurity and tunnel junction. In addition, conventional and spin figures of merit, as well as the electronic contribution to heat conductance are considered. We also show that pure spin current can be driven by a spin bias applied to the junction with spin impurity, even if no electron transfer between the electrodes can take place. The underlying mechanism employs single-electrode tunneling processes (electrode-spin exchange interaction) and the impurity as an intermediate reservoir of angular momentum.
description: 24 pages with 7 figures, version as published
On the Spectral Gap of a Quantum Graph
Creators: name: Kennedy, James B.
name: Kurasov, Pavel
name: Malenova, Gabriela
name: Mugnolo, Delio
Publisher: name: arXiv
Year: 2015
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We consider the problem of finding universal bounds of "isoperimetric" or "isodiametric" type on the spectral gap of the Laplacian on a metric graph with natural boundary conditions at the vertices, in terms of various analytical and combinatorial properties of the graph: its total length, diameter, number of vertices and number of edges. We investigate which combinations of parameters are necessary to obtain non-trivial upper and lower bounds and obtain a number of sharp estimates in terms of these parameters. We also show that, in contrast to the Laplacian matrix on a combinatorial graph, no bound depending only on the diameter is possible. As a special case of our results on metric graphs, we deduce estimates for the normalised Laplacian matrix on combinatorial graphs which, surprisingly, are sometimes sharper than the ones obtained by purely combinatorial methods in the graph theoretical literature.
Design, Implementation, and Deployment of IoT/M2M Smart City Applications Based on MCNs
Creators: name: Djehaiche, Rania
name: Aidel, Salih
name: Belazzoug, Massinissa
name: Saeed, Nasir
Publisher: name: figshare
Year: 2023
Subjects: Electronic sensors

description: Recently, the widespread adoption of the Internet of Things (IoT) and machine-to-machine (M2M) has led to a significant influx of smart services and applications. This research paper addresses the deployment and implementation of IoT/M2M technologies in the smart city, one of its most popular applications. The proposed solution presents a complete system for IoT/M2M smart cities based on different mobile cellular networks (MCNs) such as 2G, 4G, or 5G; to provide safety, convenience, energy saving, and urban quality of life improvement by using efficient and low-cost components such as Arduino microcontroller and NodeMCU board with several compatible sensors, actuators, and shields. The purpose of this paper is to present a practical example of an IoT/M2M smart city system; that contains several smart applications such as smart safety that consists of three services (fire and gas detection, air quality monitoring system, and automatic railway crossing system), smart agriculture and smart parking. All these applications are designed and implemented to control and monitor the city remotely via our mobile application called "Raniso,” which provides citizens with essential daily urban services in a simple and accessible way. The app also serves as a communication platform between citizens and city authorities, facilitating collaborative processes and digital participation within the smart city.
Australian taipan (Oxyuranus spp.) envenoming: clinical effects and potential benefits of early antivenom therapy – Australian Snakebite Project (ASP-25)
Creators: name: Johnston, Christopher I.
name: Ryan, Nicole M.
name: O’Leary, Margaret A.
name: Brown, Simon G. A.
name: Isbister, Geoffrey K.
Publisher: name: Figshare
Year: 2016
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Virology

description: Context: Taipans (Oxyuranus spp.) are medically important venomous snakes from Australia and Papua New Guinea. The objective of this study was to describe taipan envenoming in Australian and its response to antivenom. Methods: Confirmed taipan bites were recruited from the Australian Snakebite Project. Data were collected prospectively on all snakebites, including patient demographics, bite circumstances, clinical effects, laboratory results, complications and treatment. Blood samples were taken and analysed by venom specific immunoassay to confirm snake species and measure venom concentration pre- and post-antivenom. Results: There were 40 confirmed taipan bites: median age 41 years (2–85 years), 34 were males and 21 were snake handlers. Systemic envenoming occurred in 33 patients with neurotoxicity (26), complete venom induced consumption coagulopathy (VICC) (16), partial VICC (15), acute kidney injury (13), myotoxicity (11) and thrombocytopenia (7). Venom allergy occurred in seven patients, three of which had no evidence of envenoming and one died. Antivenom was given to 34 patients with a median initial dose of one vial (range 1–4), and a median total dose of two vials (range 1–9). A greater total antivenom dose was associated with VICC, neurotoxicity and acute kidney injury. Early antivenom administration was associated with a decreased frequency of neurotoxicity, acute kidney injury, myotoxicity and intubation. There was a shorter median time to discharge of 51 h (19–432 h) in patients given antivenom <4 h post-bite, compared to 175 h (27–1104 h) in those given antivenom >4 h. Median peak venom concentration in 25 patients with systemic envenoming and a sample available was 8.4 ng/L (1–3212 ng/L). No venom was detected in post-antivenom samples, including 20 patients given one vial initially and five patients bitten by inland taipans. Discussion: Australian taipan envenoming is characterised by neurotoxicity, myotoxicity, coagulopathy, acute kidney injury and thrombocytopenia. One vial of antivenom binds all measurable venom and early antivenom was associated with a favourable outcome.
Bounding the Greedy Strategy in Finite-Horizon String Optimization
Creators: name: Liu, Yajing
name: Chong, Edwin K. P.
name: Pezeshki, Ali
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We consider an optimization problem where the decision variable is a string of bounded length. For some time there has been an interest in bounding the performance of the greedy strategy for this problem. Here, we provide weakened sufficient conditions for the greedy strategy to be bounded by a factor of $(1-(1-1/K)^K)$, where $K$ is the optimization horizon length. Specifically, we introduce the notions of $K$-submodularity and $K$-GO-concavity, which together are sufficient for this bound to hold. By introducing a notion of \emph{curvature} $η\in(0,1]$, we prove an even tighter bound with the factor $(1/η)(1-e^{-η})$. Finally, we illustrate the strength of our results by considering two example applications. We show that our results provide weaker conditions on parameter values in these applications than in previous results.
description: This paper has been accepted by 2015 IEEE CDC
A one-pot synthesis of omarigliptin and its analogues through stabilized beta-amino ketone intermediate
Creators: name: Li, You
name: Tongchao Liu
name: Chungang Li
name: Xiong, Bing
name: Dongmei Zhao
name: Maosheng Cheng
name: Guohua Chen
name: Jingkang Shen
name: Yue-Lei Chen
Publisher: name: Figshare
Year: 2017
Subjects: subject: Biophysics
subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Infectious Diseases
subject: FOS: Health sciences

description: We have discovered a unique stabilization condition for beta-amino ketone 7. With compound 7 as an unprecedented intermediate, omarigliptin 1 could be prepared in a highly efficient one-pot procedure with good yield. Also with this intermediate 7, some analogues of omarigliptin 1 were readily prepared for the first time.
A cooperative paradigm for task-space control of multilateral nonlinear teleoperation with bounded inputs and time-varying delays
Creators: Amir Zakerimanesh
Farzad Hashemzadeh
Ali Torabi
Mahdi Tavakoli
Publisher: name: University of Alberta Library
Year: 2022

In this article, a novel multilateral teleoperation structure is presented for cooperative control of a redundant remote robot in the task-space. In the structure, each local robot is assigned a real number between zero and one, as its dominance factor. The sum of all the assigned factors is equal to one, and a greater dominance factor implies that its corresponding operator will have more power in controlling the remote robot. The time-varying delays in the communication channels, the actuators saturation, and the nonlinear dynamics are incorporated into the controller development. Using Barbalat’s lemma and a Lyapunov-Krasovskii functional, the asymptotic stability analysis of the closed-loop dynamics are shown, and the performance claims are delivered. Simulation and experimental results are provided to verify the theoretical findings.
A Highly Efficient Implementation of Multiple Precision Sparse Matrix-Vector Multiplication and Its Application to Product-type Krylov Subspace Methods
Creators: name: Kouya, Tomonori
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We evaluate the performance of the Krylov subspace method by using highly efficient multiple precision sparse matrix-vector multiplication (SpMV). BNCpack is our multiple precision numerical computation library based on MPFR/GMP, which is one of the most efficient arbitrary precision floating-point arithmetic libraries. However, it does not include functions that can manipulate multiple precision sparse matrices. Therefore, by using benchmark tests, we show that SpMV implemented in these functions can be more efficient. Finally, we also show that product-type Krylov subspace methods such as BiCG and GPBiCG in which we have embedded SpMV, can efficiently solve large-scale linear systems of equations provided in the UF sparse matrix collections in a memory-restricted computing environment.
Docking accuracy enhanced by QM-derived protein charges
Creators: name: Dawei Zhang
name: Haisheng Li
name: Huixian Wang
name: Liben Li
Publisher: name: Figshare
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Effects of protein polari sation on docking accuracy were investigated using molecular docking programme AutoDock 4 in which topology-specific empirical Gasteiger charges were replaced with Polarised protein-specific charges (PPC) to represent quantum mechanics- polarised protein. Docking was successfully conducted for 50 diverse protein–ligand complexes. The docking with PPC charges shows a decrease in the root-mean-square deviation (RMSD) values of ligands compared to those from the docking with Gasteiger charges. Ligand binding orientations and their key interactions such as hydrogen bonding interactions in X-ray structures were substantially reproduced in complexes docked using PPC scheme with 98% of the RMSDs of the best docking poses less than 2 Å compared to 74% in the docking with Gasteiger charges. Considerable improvements in docking accuracy were observed by simply altering the atomic partial charges in the scoring function, which reflects the importance of protein polarisation in molecular docking. Further research can be carried out to (1) include polarisation of both ligands and proteins to account for polarisation effects within protein and between protein and ligand, and (2) develop a PPC-based scoring function to increase the docking accuracies for protein–ligand complexes from a larger variety of protein families.
Upper bound theorem for odd-dimensional flag triangulations of manifolds
Creators: name: Adamaszek, Michal
name: Hladký, Jan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We prove that among all flag triangulations of manifolds of odd dimension 2r-1 with sufficiently many vertices the unique maximizer of the entries of the f-, h-, g- and gamma-vector is the balanced join of r cycles. Our proof uses methods from extremal graph theory.
description: Clarifications and new references, title has changed
On the admissibility of finite groups over semi-global fields in the bad characteristic case
Creators: name: Davidov, Yael
Publisher: name: No Publisher Supplied
Year: 2023

description: In the last 20 years, a method of constructing various algebraic objects over semi-global fields by patching together compatible objects constructed on a network of field extensions has been introduced and developed by Harbater, Hartmann, and Krashen. For example, field patching can be used to study central simple algebras and Galois extensions over these fields. This has been a powerful tool in considering the problem of admissibility over these fields. Given a finite group G and a field F we say that G is admissible over F if there is a division algebra central over F with a maximal subfield that is a Galois extension of F with group G. In this thesis we build on their work and results of Guico (2020) to completely characterize admissible groups over function fields of curves over equicharacteristic complete discretely valued fields with algebraically closed residue fields.
Protocole additionnel de Nagoya-Kuala Lumpur sur la responsabilité et la réparation relatif au protocole de cartaghène sur la prévention des risques biotechnologiques: approche internationale et européenne
Creators: name: Hannequart, Isabelle
Publisher: name: Revista de Ciências Empresariais e Jurídicas / Review of Business and Legal Sciences
Year: 2014

description: Le volet responsabilité et réparation a fait partie des sujets de négociatian lors de l´'élaboration du Protocole de Carthagène à la fin des années 90, protocole qui vient lui-même développer la Convention sur la diversité biologique en visant une utilisation sécurisée des produits biotechnologiques et notamment des organismes génétiquement modifiés, qui pourraient avoir des effets néfastes sur la santé humaine et sur la conservation et l'utilisation durable de la diversité biologique.
description: Revista de Ciências Empresariais e Jurídicas / Review of Business and Legal Sciences, N.º 25 (2014): Revista de Ciências Empresariais e Jurídicas / Review of Business and Legal Sciences
Dust within the old nuclear star cluster in the Milky Way
Creators: name: Chatzopoulos, Sotiris
name: Gerhard, Ortwin
name: Fritz, Tobias
name: Wegg, Christopher
name: Gillessen, Stefan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The mean absolute extinction towards the central parsec of the Milky Way is A_K~3 mag, including both foreground and Galactic center dust. Here we present a measurement of dust extinction within the Galactic old nuclear star cluster (NSC), based on combining differential extinctions of NSC stars with their u_l proper motions along Galactic longitude. Extinction within the NSC preferentially affects stars at its far side, and because the NSC rotates, this causes higher extinctions for NSC stars with negative u_l, as well as an asymmetry in the u_l-histograms. We model these effects using an axisymmetric dynamical model of the NSC in combination with simple models for the dust distribution. Comparing the predicted asymmetry to data for ~7100 stars in several NSC fields, we find that dust associated with the Galactic center mini-spiral with extinction A_K~=0.15-0.8 mag explains most of the data. The largest extinction A_K~=0.8 mag is found in the region of the Western arm of the mini-spiral. Comparing with total A_K determined from stellar colors, we determine the extinction in front of the NSC. Finally, we estimate that for a typical extinction of A_K~=0.4 the statistical parallax of the NSC changes by ~0.4%.
description: 14 pages, 13 figures, 2 tables, submitted to MNRAS
Das contas no direito comercial
Creators: name: Vasconcelos, Paulo
Publisher: name: Revista de Ciências Empresariais e Jurídicas / Review of Business and Legal Sciences
Year: 2014

description: I. Intróito É uma honra poder tomar a palavra nesta saessão comemorativa do centésimo vigésimo oitavo aniversário do ISCAP[...]
description: Revista de Ciências Empresariais e Jurídicas / Review of Business and Legal Sciences, N.º 25 (2014): Revista de Ciências Empresariais e Jurídicas / Review of Business and Legal Sciences
Parity violating gravitational waves at the end of inflation
Creators: name: Bastero-Gil, Mar
name: Manso, António Torres
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Inflaton-vector interactions of the type $ϕF\tilde{F}$ have provided interesting phenomenology to tackle some of current problems in cosmology, namely the vectors could constitute the dark matter component. It could also lead to possible signatures imprinted in a gravitational wave spectrum. Through this coupling, a rolling inflaton induces an exponential production of the transverse polarizations of the vector field, having a maximum at the end of inflation when the inflaton field velocity is at its maximum. These gauge particles, already parity asymmetric, will source the tensor components of the metric perturbations, leading to the production of parity violating gravitational waves. In this work we examine the vector particle production with an attempt to mimic its backreaction effects on the inflation evolution in the weak coupling regime. Furthermore, we fully integrate the gauge particle amplitudes spectrum during this production epoch, studying the behavior until the end of reheating. Finally, we calculate the gravitational wave spectrum solely relying on the vector mode WKB expansion in its regime of validity.
description: Published version with \alpha-attractors potential; 21 pages, 11 figures
title: Suitability of quantitative volcanic hazard and risk assessment methods and tools for crisis management in Auckland, New Zealand
Creators: name: Wild, A. J.
name: Lindsay, Jan M.
name: Bebbington, M. S.
name: Clive, M.A.
name: Wilson, T. M.
Publisher: name: GNS Science
Year: 2020

description:  In the lead up to the next Auckland Volcanic Field (AVF) eruption, it is likely decision-makers will need to determine when and where to call an evacuation. Over the past two decades there has been a growing body of research aimed at exploring the use of quantitative hazard and risk models to support decision-makers. There is a wide range of existing quantitative approaches for assessing risk and its components: hazard, exposure and vulnerability. A detailed understanding of the differences between these approaches is needed in order to select the most appropriate one for a specific decision-making context. In this report quantitative volcanic hazard models for assessing eruption probability and vent location distribution are compared, along with relevant exposure, vulnerability, impact and cost-benefit analysis approaches. A selection framework for each of these components is presented for a range of assessment requirements. The selection framework presented in this report aims to support any risk scientist in selecting an approach to use when developing a quantitative volcanic hazard and risk model. This selection framework is then applied in the context of an AVF eruption evacuation decision-support framework. The criteria for selection of approaches used for the AVF example are informed by the outcomes of a stakeholder engagement workshop that was carried out to understand requirements for AVF decision-support. For the AVF hazard assessment, two pre-developed event tree tools were identified as appropriate, BET_EF and ST_HASSET. The models were both run based on published examples and tested against simulated event data from a 2008 tabletop AVF eruption exercise, Exercise Ruaumoko. This highlighted some functionality differences between BET_EF and ST_HASSET, with BET_EF using predefined thresholds and inputs for monitoring observations, and ST_HASSET relying on subjective selection for any changes in monitoring observations. Due to these differences and the wider experience in New Zealand for both the AVF and other New Zealand volcanoes, BET_EF is selected as a more appropriate quantitative volcanic hazard assessment tool for the purposes of an AVF eruption context. The availability of detailed population and road spatial data for Auckland and suitable vulnerability functions allow for the development of an evacuation decision-support tool for an appropriate scale. The findings from this report will support ongoing research developing a quantitative hazard and risk model to support decision-makers in the event of an evacuation during an AVF event. (auth)
Role of initial system-bath correlation on coherence trapping
Creators: name: Zhang, Ying-Jie
name: Han, Wei
name: Xia, Yun-Jie
name: Yu, Yan-Mei
name: Fan, Heng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the coherence trapping of a qubit correlated initially with a non-Markovian bath in a pure dephasing channel. By considering the initial qubit-bath correlation and the bath spectral density, we find that the initial qubit-bath correlation can lead to a more efficient coherence trapping than that of the initially separable qubit-bath state. The stationary coherence in the long time limit can be maximized by optimizing the parameters of the initially correlated qubit-bath state and the bath spectral density. In addition, the effects of this initial correlation on the maximal evolution speed for the qubit trapped to its stationary coherence state are also explored.
description: 5 pages,3 figures, welcome to comment
Ferroelectricity and Rashba effect in GeTe
Creators: name: Rinaldi, C.
name: Di Sante, D.
name: Giussani, A.
name: Wang, R. -N.
name: Bertoli, S.
name: Cantoni, M.
name: Baldrati, L.
name: Vobornik, I.
name: Panaccione, G.
name: Calarco, R.
name: Picozzi, S.
name: Bertacco, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: GeTe has been proposed as the father compound of a new class of functional materials displaying bulk Rashba effects coupled to ferroelectricity: ferroelectric Rashba semiconductors. In nice agreement with first principle calculations, we show by angular resolved photoemission and piezo-force microscopy that GeTe displays surface and bulk Rashba bands arising from the intrinsic inversion symmetry breaking provided by the remanent ferroelectric polarization. This work points to the possibility to control the spin chirality of bands in GeTe by acting on its ferroelectric polarization.
description: 10 pages, 4 figures
Finite quadratic modules and lattices
Creators: name: Zhu, Xiao-Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E12 (Primary), 16D70 (Secondary)

description: We give a new proof of the fact that any finite quadratic module can be decomposed into indecomposable ones. For any indecomposable finite quadratic module, we construct a lattice, and a positive definite lattice, both of which are of the least rank, whose discriminant module is the given one. The resulting lattices are given by their Gram matrices explicitly.
description: 33 pages
Examining motor vehicle crash involvement and readiness to change on drinking and driving behaviors among injured emergency department patients
Creators: name: Baird, Janette
name: Yang, Eunice
name: Strezsak, Valerie
name: Mello, Michael J.
Publisher: name: Figshare
Year: 2016
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Objective: To measure the effect of motor vehicle crash (MVC) involvement and readiness to change drinking and driving behaviors on subsequent driving and drinking behaviors among injured emergency department (ED) patients who use alcohol at harmful levels. Methods: This was a secondary analysis of a randomized controlled trial of injured ED patients who screened positive for harmful alcohol use, who at recruitment reported driving in the past 12 months and received at least one of the intended intervention sessions (brief behavioral intervention versus attention placebo control; N = 407). Outcome variables were as follows: (1) change in 6 impaired driving behaviors and (2) report of MVCs and traffic violations in the 12 months following recruitment; predictor variables were as follows: (1) treatment assignment, (2) MVC involvement at recruitment, and (3) baseline readiness to change alcohol use and drinking and driving. Results: Modeling of change in the 6 impaired driving variables indicated that neither the recruitment visits being MVC related nor baseline readiness to change alcohol use and drinking and driving behaviors predicted greater changes in impaired driving over time. Baseline reports of past moving traffic violations and the ED visit being MVC related predicted a greater likelihood of each behavior at 12 months following study recruitment. Conclusions: This study and others have demonstrated that ED patients with harmful alcohol use are willing to engage in behavioral interventions directed at changing risky behaviors. However, this study did not demonstrate that patients considered having the potential to be more engaged with the intervention because their ED visit was MVC related and/or they had expressed intent to change their risky alcohol use and drinking and driving behaviors were more likely to change these risky behaviors.
Socializing the Semantic Gap: A Comparative Survey on Image Tag Assignment, Refinement and Retrieval
Creators: name: Li, Xirong
name: Uricchio, Tiberio
name: Ballan, Lamberto
name: Bertini, Marco
name: Snoek, Cees G. M.
name: Del Bimbo, Alberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Retrieval (cs.IR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: H.3.1; H.3.3

description: Where previous reviews on content-based image retrieval emphasize on what can be seen in an image to bridge the semantic gap, this survey considers what people tag about an image. A comprehensive treatise of three closely linked problems, i.e., image tag assignment, refinement, and tag-based image retrieval is presented. While existing works vary in terms of their targeted tasks and methodology, they rely on the key functionality of tag relevance, i.e. estimating the relevance of a specific tag with respect to the visual content of a given image and its social context. By analyzing what information a specific method exploits to construct its tag relevance function and how such information is exploited, this paper introduces a taxonomy to structure the growing literature, understand the ingredients of the main works, clarify their connections and difference, and recognize their merits and limitations. For a head-to-head comparison between the state-of-the-art, a new experimental protocol is presented, with training sets containing 10k, 100k and 1m images and an evaluation on three test sets, contributed by various research groups. Eleven representative works are implemented and evaluated. Putting all this together, the survey aims to provide an overview of the past and foster progress for the near future.
description: to appear in ACM Computing Surveys
Diffiner: A Versatile Diffusion-based Generative Refiner for Speech Enhancement
Creators: name: Sawata, Ryosuke
name: Murata, Naoki
name: Takida, Yuhta
name: Uesaka, Toshimitsu
name: Shibuya, Takashi
name: Takahashi, Shusuke
name: Mitsufuji, Yuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Although deep neural network (DNN)-based speech enhancement (SE) methods outperform the previous non-DNN-based ones, they often degrade the perceptual quality of generated outputs. To tackle this problem, we introduce a DNN-based generative refiner, Diffiner, aiming to improve perceptual speech quality pre-processed by an SE method. We train a diffusion-based generative model by utilizing a dataset consisting of clean speech only. Then, our refiner effectively mixes clean parts newly generated via denoising diffusion restoration into the degraded and distorted parts caused by a preceding SE method, resulting in refined speech. Once our refiner is trained on a set of clean speech, it can be applied to various SE methods without additional training specialized for each SE module. Therefore, our refiner can be a versatile post-processing module w.r.t. SE methods and has high potential in terms of modularity. Experimental results show that our method improved perceptual speech quality regardless of the preceding SE methods used.
description: Accepted by Interspeech 2023
Inverse approach to solutions of the Dirac equation for space-time dependent fields
Creators: name: Oertel, Johannes
name: Schützhold, Ralf
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Exact solutions of the Dirac equation in external electromagnetic background fields are very helpful for understanding non-perturbative phenomena in quantum electrodynamics (QED). However, for the limited set of known solutions, the field often depends on one coordinate only, which could be the time $t$, a spatial coordinate such as $x$ or $r$, or a light-cone coordinate such as $ct-x$. By swapping the roles of known and unknown quantities in the Dirac equation, we are able to generate families of solutions of the Dirac equation in the presence of genuinely space-time dependent electromagnetic fields in $1+1$ and $2+1$ dimensions.
description: 7 pages, 2 figures
Electroweak corrections to $Z$-boson hadroproduction at finite transverse momentum
Creators: name: Hollik, W.
name: Kniehl, B. A.
name: Shcherbakova, E. S.
name: Veretin, O. L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate the full one-loop electroweak radiative corrections, of ${\cal O}(α^2α_s)$, to the cross section of single $Z$-boson inclusive hadroproduction at finite transverse momentum ($p_T$). This includes the ${\cal O}(α)$ corrections to $Z+j$ production, the ${\cal O}(α_s)$ corrections to $Z+γ$ production, and certain QCD-electroweak interference contributions involving a single quark trace. We recover the QCD and purely weak corrections and study the QED corrections and the QCD-electroweak interference contributions for the first time. We also consider direct and resolved photoproduction in elastic and inelastic scattering. We present $p_T$ and rapidity distributions for the experimental conditions at the Fermilab Tevatron and the CERN LHC and assess the significance of the various contributions.
description: 31 pages, 11 figures; discussion enhanced, figures added, references added and updated; accepted for publication in Nucl. Phys. B
State-Specific Configuration Interaction for Excited States
Creators: name: Kossoski, Fábris
name: Loos, Pierre-François
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We introduce and benchmark a systematically improvable route for excited-state calculations, state-specific configuration interaction ($Δ$CI), \alert{which is a particular realization of multiconfigurational self-consistent field and multireference configuration interaction.} Starting with a reference built from optimized configuration state functions, separate CI calculations are performed for each targeted state (hence state-specific orbitals and determinants). Accounting for single and double excitations produces the $Δ$CISD model, which can be improved with second-order Epstein-Nesbet perturbation theory ($Δ$CISD+EN2) or a posteriori Davidson corrections ($Δ$CISD+Q). These models were gauged against a vast and diverse set of 294 reference excitation energies. We have found that $Δ$CI is significantly more accurate than standard ground-state-based CI, whereas close performances were found between $Δ$CISD and EOM-CC2, and between $Δ$CISD+EN2 and EOM-CCSD. For larger systems, $Δ$CISD+Q delivers more accurate results than EOM-CC2 and EOM-CCSD. The $Δ$CI route can handle challenging multireference problems, singly- and doubly-excited states, from closed- and open-shell species, with overall comparable accuracy, and thus represents a promising alternative to more established methodologies. In its current form, however, it is only reliable for relatively low-lying excited states.
description: 14 pages, 3 figures (supplementary information available)
Efficient Adaptive Ensembling for Image Classification
Creators: name: Bruno, Antonio
name: Moroni, Davide
name: Martinelli, Massimo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In recent times, with the exception of sporadic cases, the trend in Computer Vision is to achieve minor improvements compared to considerable increases in complexity. To reverse this trend, we propose a novel method to boost image classification performances without increasing complexity. To this end, we revisited ensembling, a powerful approach, often not used properly due to its more complex nature and the training time, so as to make it feasible through a specific design choice. First, we trained two EfficientNet-b0 end-to-end models (known to be the architecture with the best overall accuracy/complexity trade-off for image classification) on disjoint subsets of data (i.e. bagging). Then, we made an efficient adaptive ensemble by performing fine-tuning of a trainable combination layer. In this way, we were able to outperform the state-of-the-art by an average of 0.5$\%$ on the accuracy, with restrained complexity both in terms of the number of parameters (by 5-60 times), and the FLoating point Operations Per Second (FLOPS) by 10-100 times on several major benchmark datasets.
title: Философия в современном мире
Creators: name: ELS IPR BOOKS
Publisher: name: Новосибирский государственный университет экономики и управления «НИНХ»
Year: 2021

description: Настоящее пособие представляет собой коллективный труд, авторы которого занимаются разработкой ряда направлений современной философии, таких как онтология, аксиология, гносеология, философская антропология и социальная философия, этика (включая биоэтику), герменевтика, постмодернизм, философия техники, феноменология и экзистенциализм. В каждой главе рассмотрено одно из этих направлений с точки зрения проблемного подхода. Книга предназначена для студентов нефилософских специальностей, включая бакалавров, магистрантов и аспирантов, а также для всех, кто интересуется современными философскими проблемами.
Comparison of Bayesian predictive methods for model selection
Creators: name: Piironen, Juho
name: Vehtari, Aki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The goal of this paper is to compare several widely used Bayesian model selection methods in practical model selection problems, highlight their differences and give recommendations about the preferred approaches. We focus on the variable subset selection for regression and classification and perform several numerical experiments using both simulated and real world data. The results show that the optimization of a utility estimate such as the cross-validation (CV) score is liable to finding overfitted models due to relatively high variance in the utility estimates when the data is scarce. This can also lead to substantial selection induced bias and optimism in the performance evaluation for the selected model. From a predictive viewpoint, best results are obtained by accounting for model uncertainty by forming the full encompassing model, such as the Bayesian model averaging solution over the candidate models. If the encompassing model is too complex, it can be robustly simplified by the projection method, in which the information of the full model is projected onto the submodels. This approach is substantially less prone to overfitting than selection based on CV-score. Overall, the projection method appears to outperform also the maximum a posteriori model and the selection of the most probable variables. The study also demonstrates that the model selection can greatly benefit from using cross-validation outside the searching process both for guiding the model size selection and assessing the predictive performance of the finally selected model.
description: A few minor changes; added a few sentences, corrected some grammatical errors and modified Figure 7