cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards real-time and energy efficient Siamese tracking -- a hardware-software approach
Creators: name: Przewlocka-Rus, Dominika
name: Kryjak, Tomasz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Siamese trackers have been among the state-of-the-art solutions in each Visual Object Tracking (VOT) challenge over the past few years. However, with great accuracy comes great computational complexity: to achieve real-time processing, these trackers have to be massively parallelised and are usually run on high-end GPUs. Easy to implement, this approach is energy consuming, and thus cannot be used in many low-power applications. To overcome this, one can use energy-efficient embedded devices, such as heterogeneous platforms joining the ARM processor system with programmable logic (FPGA). In this work, we propose a hardware-software implementation of the well-known fully connected Siamese tracker (SiamFC). We have developed a quantised Siamese network for the FINN accelerator, using algorithm-accelerator co-design, and performed design space exploration to achieve the best efficiency-to-energy ratio (determined by FPS and used resources). For our network, running in the programmable logic part of the Zynq UltraScale+ MPSoC ZCU104, we achieved the processing of almost 50 frames-per-second with tracker accuracy on par with its floating point counterpart, as well as the original SiamFC network. The complete tracking system, implemented in ARM with the network accelerated on FPGA, achieves up to 17 fps. These results bring us towards bridging the gap between the highly accurate but energy-demanding algorithms and energy-efficient solutions ready to be used in low-power, edge systems.
description: Accepted for DASIP 2022 workshop
Variability in some Nilotic lithic assemblages of the late Pleistocene and early Holocene
Creators: name: Mohamed, Amal Abu Bakr, 1954-
Publisher: name: University of Calgary
Year: 1985
Subjects: subject: DT 159.6 N83 M63 1986
subject: Nubia - Antiquities
subject: Excavations (Archaeology) - Nubia
subject: Nilotic tribes

description: Bibliography: p. 135-143.
title: Inhaltliche Validierung des „Comprehensive ICF Core Set for Head and Neck Cancer“: Die Perspektive der Logopäden
Creators: name: Engelbarts, Matthias
name: Harréus, Ulrich
name: Strieth, Sebastian
name: Becker, Sven
name: Holtfreter, Vanessa
name: Kisser, Ulrich
name: Sabariego, Carla
name: Stier-Jarmer, Marita
name: Cieza, Alarcos
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Patienten mit einem Kopf-Hals-Tumor (KHT) erleben über die Erkrankung hinaus Veränderungen, welche neben der (Selbst-) Wahrnehmung, alltägliche Funktionen, soziale Interaktion und die Psyche betreffen. Das „Comprehensive ICF Core Set for HNC“ ist ein diagnosespezifisches[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Unifying Kitaev magnets, kagome dimer models and ruby Rydberg spin liquids
Creators: name: Verresen, Ruben
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The exploration of quantum spin liquids (QSLs) has been guided by different approaches including the resonating valence bond (RVB) picture, deconfined lattice gauge theories and the Kitaev model. More recently, a spin liquid ground state was numerically established on the ruby lattice, inspired by the Rydberg blockade mechanism. Here we unify these varied approaches in a single parent Hamiltonian, in which local fluctuations of anyons stabilize deconfinement. The parent Hamiltonian is defined on kagomé triangles -- each hosting four RVB-like states -- and includes only Ising interactions and single-site transverse fields. In the weak-field limit, the ruby spin liquid and exactly soluble kagomé dimer models are recovered, while the strong-field limit reduces to the Kitaev honeycomb model, thereby unifying three seemingly different approaches to QSLs. We similarly obtain the chiral Yao-Kivelson model, honeycomb toric code and a new spin-1 quadrupolar Kitaev model. The last is shown to be in a QSL phase by a non-local mapping to the kagomé Ising antiferromagnet. We demonstrate various applications of our framework, including (a) an adiabatic deformation of the ruby lattice model to the exactly soluble kagomé dimer model, conclusively establishing the QSL phase in the former; and (b) demystifying the dynamical protocol for measuring off-diagonal strings in the Rydberg implementation of the ruby lattice spin liquid. More generally, we find an intimate connection between Kitaev couplings and the repulsive interactions used for emergent dimer models. For instance, we show how a spin-1/2 XXZ model on the ruby lattice encodes a Kitaev honeycomb model, providing a new route toward realizing the latter in cold-atom or solid-state systems.
description: 22 pages + appendix; v2 is the published version which contains additional models (Sec V.E) and a protocol for efficiently gauging $Z_2$ and $Z_2 \times Z_2$ symmetries (Appendix B)
A Semi-Supervised Adaptive Discriminative Discretization Method Improving Discrimination Power of Regularized Naive Bayes
Creators: name: Wang, Shihe
name: Ren, Jianfeng
name: Bai, Ruibin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Recently, many improved naive Bayes methods have been developed with enhanced discrimination capabilities. Among them, regularized naive Bayes (RNB) produces excellent performance by balancing the discrimination power and generalization capability. Data discretization is important in naive Bayes. By grouping similar values into one interval, the data distribution could be better estimated. However, existing methods including RNB often discretize the data into too few intervals, which may result in a significant information loss. To address this problem, we propose a semi-supervised adaptive discriminative discretization framework for naive Bayes, which could better estimate the data distribution by utilizing both labeled data and unlabeled data through pseudo-labeling techniques. The proposed method also significantly reduces the information loss during discretization by utilizing an adaptive discriminative discretization scheme, and hence greatly improves the discrimination power of classifiers. The proposed RNB+, i.e., regularized naive Bayes utilizing the proposed discretization framework, is systematically evaluated on a wide range of machine-learning datasets. It significantly and consistently outperforms state-of-the-art NB classifiers.
description: Accepted by Expert System with Applications
Twisted Affine Integrable Hierarchies and Soliton Solutions
Creators: name: Adans, Y. F.
name: Gomes, J. F.
name: Lobo, G. V.
name: Zimerman, A. H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A systematic construction of a class of integrable hierarchy is discussed in terms of the twisted affine $A_{2r}^{(2)}$ Lie algebra. The zero curvature representation of the time evolution equations are shown to be classified according to its algebraic structure and according to its vacuum solutions. It is shown that a class of models admit both zero and constant (non zero) vacuum solutions. Another, consists essentially of integral non-local equations and can be classified into two sub-classes, one admitting zero vacuum and another of constant, non zero vacuum solutions. The two dimensional gauge potentials in the vacuum plays a crucial ingredient and are shown to be expanded in powers of the vacuum parameter $v_0$. Soliton solutions are constructed from vertex operators, which for the non zero vacuum solutions, correspond to deformations characterized by $v_0$.
description: Latex 24 pages
M.F.A. graduating paper / The Extended Moments of Photographic Still Life: an accompaniment to the thesis exhibition, “Extended Moments”
Creators: name: Morrish, David Malcolm, 1953-
Publisher: name: University of Calgary
Year: 1985
Subjects: subject: NR 656.5 M65 1986
subject: Still-life photography
subject: Morrish, David Malcolm, 1953

description: This paper is an exploration of the roots behind the photographic still lifes that I have created for my thesis exhibition. It begins with a description of the historical development of the still life genre and explores the work of artists which has influenced my own. The paper concludes with a detailed analysis of several specific photographs within the exhibition. The exhibition of forty-nine black and white photographs, many of which are toned and hand tinted, consists of a series which deals with preservation, memory, and mortality. Various stages of decay and preservation are juxtaposed within much of the work. The exhibition title, "Extended Moments", describes those inert plateaus which are preserved on film and mirror the actual extension of time within the print.
Predicting Defect Stability and Annealing Kinetics in Two-Dimensional PtSe$_2$ Using Steepest Entropy Ascent Quantum Thermodynamics
Creators: name: Younis, Aimen
name: Baniasadi, Fazel
name: von Spakovsky, Michael R.
name: Reynolds, William T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The steepest-entropy-ascent quantum thermodynamic (SEAQT) framework was used to calculate the stability of a collection of point defects in 2D PtSe$_2$ and predict the kinetics with which defects rearrange during thermal annealing. The framework provides a non-equilibrium, ensemble-based framework with a self-consistent link between mechanics (both quantum and classical) and thermodynamics. It employs an equation of motion derived from the principle of steepest entropy ascent (maximum entropy production) to predict the time evolution of a set of occupation probabilities that define the states of a system undergoing a non-equilibrium process. The system is described by a degenerate energy landscape of eigenvalues, and the entropy is found from the occupation probabilities and the eigenlevel degeneracies. Scanning tunneling microscopy was used to identify the structure and distribution of point defects observed experimentally in a 2D PtSe$_2$ film. A catalog of observed defects included six unique point defects (vacancies and anti-site defects on Pt and Se sublattices) and twenty combinations of multiple point defects in close proximity. The defect energies were estimated with density functional theory (DFT), while the degeneracies, or density of states, for the 2D film with all possible combinations or arrangements of cataloged defects was constructed using a non-Markovian Monte-Carlo approach (i.e., the Replica-Exchange-Wang-Landau algorithm) with a q-state Potts model. The energy landscape and associated degeneracies were determined for a 2D PtSe$_2$ film two molecules thick and $30 \times 30$ unit cells in area (total of 5400 atoms). The SEAQT equation of motion was applied to the energy landscape to determine how an arbitrary density and arrangement of the six defect types evolve during annealing.
description: 19 pages, 11 pdf and png figures, uses revtex4-2. This paper employs the steepest-entropy ascent (or maximum entropy production) principle to predict the migration kinetics and stable equilibrium arrangement of point defects in a two-dimensional material (PtSe2)
title: Die transorale Lasermikrochirurgie des frühen Stimmlippenkarzinoms. Langzeitbeobachtung von 291 Patienten der Jahre 2002-2013
Creators: name: Erlenwein, Johanna
name: Fazel, Asita
name: Calibe, Amke
name: Ambrosch, Petra
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: In einer retrospektiven Studie werden die onkologischen und funktionellen Ergebnisse nach transoraler Lasermikrochirurgie (TLM) bei 291 nicht vorbehandelten Patienten mit einem frühen Stimmlippenkarzinom T1N0,T2aN0) untersucht. Bei 198 Patienten lag ein T1a-, bei 38 ein T1b- und bei 55 ein T2a-Tumor[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Subcycle resolved strong-field tunneling ionization: Identification of magnetic dipole and electric quadrupole effects
Creators: name: Mao, Xiaodan
name: Ni, Hongcheng
name: Gong, Xiaochun
name: Burgdörfer, Joachim
name: Wu, Jian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Interaction of a strong laser pulse with matter transfers not only energy but also linear momentum of the photons. Recent experimental advances have made it possible to detect the small amount of linear momentum delivered to the photoelectrons in strong-field ionization of atoms. Linear momentum transfer is a unique signature of the laser-atom interaction beyond its dipolar limit. Here, we present a decomposition of the subcycle time-resolved linear momentum transfer in term of its multipolar components. We show that the magnetic dipole contribution dominates the linear momentum transfer during the dynamical tunneling process while the post-ionization longitudinal momentum transfer in the field-driven motion of the electron in the continuum is primarily governed by the electric quadrupole interaction. Alternatively, exploiting the radiation gauge, we identify nondipole momentum transfer effects that scale either linearly or quadratically with the coupling to the laser field. The present results provide detailed insights into the physical mechanisms underlying the subcycle linear momentum transfer induced by nondipole effects.
Possible textures of the fermion mass matrices
Creators: name: Gupta, Manmohan
name: Ahuja, Gulsheen
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Texture specific fermion mass matrices have played an important role in understanding several features of fermion masses and mixings. In the present work, we have given an overview of all possible cases of Fritzsch-like as well as non Fritzsch-like texture 6 and 5 zero fermion mass matrices. Further, for the case of texture 4 zero Fritzsch-like quark mass matrices, the issue of the hierarchy of the elements of the mass matrices and the role of their phases have been discussed. Furthermore, the case of texture 4 zero Fritzsch-like lepton mass matrices has also been discussed with an emphasis on the hierarchy of neutrino masses for both Majorana and Dirac neutrinos.
description: 21 pages, 3 figures
$\mathbb{Z}_2$ topologically ordered phases on a simple hyperbolic lattice
Creators: name: Ebisu, Hiromi
name: Han, Bo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work, we consider 2D $\mathbb{Z}_2$ topologically ordered phases ($\mathbb{Z}_2$ toric code and the modified surface code) on a simple hyperbolic lattice. Introducing a 2D lattice consisting of the product of a 1D Cayley tree and a 1D conventional lattice, we investigate two topological quantities of the $\mathbb{Z}_2$ topologically ordered phases on this lattice: the ground state degeneracy on a closed surface and the topological entanglement entropy. We find that both quantities depend on the number of branches and the generation of the Cayley tree. We attribute these results to a huge number of superselection sectors of anyons.
description: 33 pages, 10 figures
Non-Uniform hyperbolicity for infinite dimensional cocycles
Creators: name: Bessa, Mario
name: Carvalho, Maria
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: primary 37H15, 37D08, secondary 47B80

description: Let H be an infinite dimensional separable Hilbert space, X a compact Hausdorff space and f : X \rightarrow X a homeomorphism which preserves a Borel ergodic measure which is positive on non-empty open sets. We prove that the non-uniformly Anosov cocycles are C0-dense in the family of partially hyperbolic f,H-skew products with non-trivial unstable bundles.
Evolution of the surface atomic structure of multielement oxide films: curse or blessing?
Creators: name: Franceschi, Giada
name: Heller, Renè
name: Schmid, Michael
name: Diebold, Ulrike
name: Riva, Michele
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Atomically resolved scanning tunneling microscopy (STM) and x-ray photoelectron spectroscopy (XPS) are used to gain atomic-scale insights into the heteroepitaxy of lanthanum-strontium manganite (LSMO, La$_{1-x}$Sr$_x$MnO$_{3-δ}$, $x$ $\approx$ 0.2) on SrTiO$_3$(110). LSMO is a perovskite oxide characterized by several composition-dependent surface reconstructions. The flexibility of the surface allows it to incorporate nonstoichiometries during growth, which result in composition-dependent surface atomic structures. This happens up to a critical point, where phase separation occurs, clusters rich in the excess cations form at the surface, and films show a rough morphology. To limit the nonstoichiometry introduced by non-optimal growth conditions, it proves useful to monitor the changes in surface atomic structures as a function of the PLD parameters and tune the latter accordingly.
description: 8 pages, 5 figures
The Influence of the roll degree of freedom on the directional behavior of a light articulated vehicle
Creators: name: Motriuk, Halina Urszula, 1955-
Publisher: name: University of Calgary
Year: 1985
Subjects: subject: TL 243 M66 1986
subject: Motor vehicles - Dynamics
subject: Motor vehicles - Stability
subject: Recreational vehicles - Dynamics

description: Bibliography: p. 80-81.
title: Expression von mTOR und AREG unter Everolimus, Sunitinib und Sorafenib in HPV-positiven und -negativen SCC
Creators: name: Essich, Coralie Isabel
name: Schultz, Johannes D.
name: Hörmann, Karl
name: Aderhold, Christoph
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Das Plattenepithelkarzinom des Kopf-Hals-Bereiches stellt die sechsthäufigste Krebsart weltweit dar und zeigt eine in den letzten Jahrzehnten kaum verbesserte 5-Jahres-Überlebensrate für die Patienten. Innovative Therapieansätze sind notwendig um die Situation zu verbessern.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Is the empirical out-of-sample variance an informative risk measure for the high-dimensional portfolios?
Creators: name: Bodnar, Taras
name: Parolya, Nestor
name: Thorsén, Erik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: The main contribution of this paper is the derivation of the asymptotic behaviour of the out-of-sample variance, the out-of-sample relative loss, and of their empirical counterparts in the high-dimensional setting, i.e., when both ratios $p/n$ and $p/m$ tend to some positive constants as $m\to\infty$ and $n\to\infty$, where $p$ is the portfolio dimension, while $n$ and $m$ are the sample sizes from the in-sample and out-of-sample periods, respectively. The results are obtained for the traditional estimator of the global minimum variance (GMV) portfolio, for the two shrinkage estimators introduced by \cite{frahm2010} and \cite{bodnar2018estimation}, and for the equally-weighted portfolio, which is used as a target portfolio in the specification of the two considered shrinkage estimators. We show that the behaviour of the empirical out-of-sample variance may be misleading is many practical situations. On the other hand, this will never happen with the empirical out-of-sample relative loss, which seems to provide a natural normalization of the out-of-sample variance in the high-dimensional setup. As a result, an important question arises if this risk measure can safely be used in practice for portfolios constructed from a large asset universe.
description: 21 pages, 5 figures
Nonlinear optical properties of a three-dimensional anisotropic quantum dot
Creators: name: Chen, Tairong
name: Xie, Wenfang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The linear and nonlinear optical properties in a three-dimensional anisotropic quantum dot subjected to a uniform magnetic field directed with respect to the $z-$axis have been investigated within the compact-density matrix formalism and the iterative method. The dependence of the linear and nonlinear optical properties on characteristic frequency of the parabolic potential, on the magnetic field and on the incident optical intensity is detailedly studied. Moreover, take into account the position-dependent effective mass, the dependence of the linear and nonlinear optical properties on the dot radius is investigated. The results show that the optical absorption coefficients (ACs) and refractive index (RI) changes of the anisotropic quantum dot (QD) have strongly affected by these factors, and the position effect also plays an important role in the optical ACs and RI changes of the anisotropic QD.
description: 12pages 8 figures, accpeted for publication in solid state communications
Retrieving planet formation parameters of WASP-77Ab using SimAb
Creators: name: Khorshid, N.
name: Min, M.
name: Désert, J. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The atmospheric compositions of planets offer a unique view into their respective formation processes. State-of-the-art observatories and techniques are finally able to provide high-precision data on atmospheric composition that can be used to constrain planet formation. In this context, we focus on the formation of WASP-77Ab based on previous observations of its atmosphere, which have provided precise C/O and metallicity measurements. We use the SimAb planet formation simulation to model the formation of WASP-77Ab. We assume two compositions for the disk WASP-77Ab was formed within: one of a solar composition and one that represents the composition of WASP-77A. In addition, we considered two different scenarios regarding the migration of the planet and we study the possible planet formation paths that reproduce the composition of WASP-77Ab. This work shows that the planet is expected to have formed in a disk where not many planetesimals could be accreted. Moreover, we demonstrate that the most likely migration scenario is disk-free migration, whereby the planet initiates its Type II migration within the CO ice line and ends it beyond the water ice line.
description: 10 pages, 9 figures
"Mangez en francais": a model for teaching culture in senior high core French programs
Creators: name: Mueller, Katherine Elizabeth, 1960-
Publisher: name: University of Calgary
Year: 1985
Subjects: subject: PC 2068 C3 M83 1986
subject: French language - Study and teaching (Secondary) - Canada
subject: French language - Study and teaching as a second language
subject: French language - Study and teaching - Canada - Non-French-speaking students
subject: Culture - Study and teaching (Higher)

description: Bibliography: p. 303-313.
description: One of the on-going struggles in the field of second- and foreign-language education is the effort to make culture a more stimulating and valuable component of the language curriculum. In an attempt to encourage renewed efforts in this direction and to provide some ideas and inspiration for the integration of culture into the language curriculum, this thesis: - reviews culture's role in the second- and foreign-language classroom. - reformulates goals of cultural instruction to allow them to be readily applied in the classroom. - proposes a list of requirements of cultural materials and of approaches to cultural instruction. - introduces, in Chapter 4, a model for cultural instruction in the French classroom, entitled "Mangez en francais! • This 178 page unit was designed for use in advanced Alberta Grade 11 Core French programs. By drawing on the students' experiences and their knowledge about their own culture, "Mangez en francais ! teaches new cultural knowledge about France and Quebec, focusing on four topics: a) "La nourriture de taus les jours" b) "Allons faire les courses!" c) "Mangez bien ! " d) "Au restaurant" "Mangez en francais ! 11 was originally supplemented by slides, overhead transparencies and plates which provide visual stimulation and, when accompanied by the exercises and activities provided in the unit, allow the student to "visit" the target cultures. This unit puts particular emphasis on increasing students' ability to function in the target culture and on contributing to the development of their communicative competence. In order to determine its quaIity and effectiveness both as a unit in its own right and as a model for similar units for use at other levels, 11 Mangez en francais ! 11 was tested and evaluated by teachers at local high schools. The evaluation , of which an analysis forms Chapter 5 of this thesis, showed that the unit is an appropriate and effective one when used with its intended audience and that it will prove to be valuable as a model for similar culture units for various levels of instruction. The creation of materials for cultural instruction which integrate language and culture in their design will allow culture to play a significant role in the language curriculum and will be of immesurable benefit to students' second- or foreign-language education.
Cosmography in f(T)-gravity
Creators: name: Capozziello, S.
name: Cardone, V. F.
name: Farajollahi, H.
name: Ravanpak, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Being based on the only assumption that the universe is homogenous and isotropic on large scales, cosmography is an ideal tool to investigate the cosmic expansion history in a almost model-independent way. Fitting the data on the luminosity distance and Baryon Acoustic Oscillations allows to determine the confidence ranges for the cosmographic parameters hence giving some quantitative constraints that a whatever theory has to fulfill. As an application, we consider here the case of teleparallel gravity (TEGR) also referred to as f(T)-gravity. To this end, we first work out analytical expressions to express the present day values of f(T)-derivatives as a function of the cosmographic parameters which hold under quite general and physically motivated conditions. We then use the constraints coming from cosmography to find out the confidence ranges for f(T)-derivatives up to the fifth order and show how these can be used to check the viability of given TEGR models without the need to explicitly solve the second order dynamic equations.
description: 12 pages, 1 figure, to appear in Phys. Rev. D
On the Geometry of Forms on Supermanifolds
Creators: name: Noja, Simone
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 58A50, 14F40

description: This paper provides a rigorous account on the geometry of forms on supermanifolds, with a focus on its algebraic-geometric aspects. First, we introduce the de Rham complex of differential forms and we compute its cohomology. We then discuss three intrinsic definitions of the Berezinian sheaf of a supermanifold - as a quotient sheaf, via cohomology of the super Koszul complex or via cohomology of the total de Rham complex. Further, we study the properties of the Berezinian sheaf, showing in particular that it defines a right $\mathcal{D}$-module. Then we introduce integral forms and their complex and we compute their cohomology, by providing a suitable Poincaré lemma. We show that the complex of differential forms and integral forms are quasi-isomorphic and their cohomology computes the de Rham cohomology of the reduced space of the supermanifold. The notion of Berezin integral is then introduced and put to the good use to prove the superanalog of Stokes' theorem and Poincaré duality, which relates differential and integral forms on supermanifolds. Finally, a different point of view is discussed by introducing the total tangent supermanifold and (integrable) pseudoforms in a new way. In this context, it is shown that a particular class of integrable pseudoforms having a distributional dependence supported at a point on the fibers are isomorphic to integral forms. Within the general overview several new proofs of results are scattered.
description: 60 pages, matches the published version. Thanks to the anonymous referee for useful comments and remarks
Antipolar transitions in GaNb$_4$Se$_8$ and GaTa$_4$Se$_8$
Creators: name: Winkler, M.
name: Prodan, L.
name: Tsurkan, V.
name: Lunkenheimer, P.
name: Kézsmárki, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present dielectric, polarization, resistivity, specific heat, and magnetic susceptibility data on single crystals of the lacunar spinels GaNb4Se8 and GaTa4Se8, tetrahedral cluster-based materials with substantial spin-orbit coupling. We concentrate on the possible occurrence of antipolar order in these compounds, as previously reported for the isoelectronic GaNb4S8, where spin-orbit coupling plays a less important role. Our broadband dielectric-spectroscopy investigations reveal clear anomalies of the intrinsic dielectric constant at the magneto-structural transitions in both systems that are in accord with the expectations for antipolar transitions. A similar anomaly is also observed at the cubic-cubic transition of the Nb compound leading to an intermediate phase. Similar to other polar and antipolar lacunar spinels, we find indications for dipolar relaxation dynamics at low temperatures. Polarization measurements on GaNb4Se8 reveal weak ferroelectric ordering below the magneto-structural transition, either superimposed to antipolar order or emerging at structural domain walls. The temperature-dependent dc resistivity evidences essentially thermally-activated charge transport with different activation energies in the different phases. A huge step-like increase of the resistivity at the magneto-structural transition of the Ta compound points to a fundamental change in the electronic structure or the mechanism of the charge transport. At low temperatures, charge transport is governed by in-gap impurity states, as also invoked to explain the resistive switching in these compounds.
description: 9 pages, 7 figures. Revised version as accepted for publication in Phys. Rev. B
About the probability distribution of a quantity with given mean and variance
Creators: name: Olivares, Stefano
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Supplement 1 to GUM (GUM-S1) recommends the use of maximum entropy principle (MaxEnt) in determining the probability distribution of a quantity having specified properties, e.g., specified central moments. When we only know the mean value and the variance of a variable, GUM-S1 prescribes a Gaussian probability distribution for that variable. When further information is available, in the form of a finite interval in which the variable is known to lie, we indicate how the distribution for the variable in this case can be obtained. A Gaussian distribution should only be used in this case when the standard deviation is small compared to the range of variation (the length of the interval). In general, when the interval is finite, the parameters of the distribution should be evaluated numerically, as suggested by I. Lira, Metrologia, 46 L27 (2009). Here we note that the knowledge of the range of variation is equivalent to a bias of the distribution toward a flat distribution in that range, and the principle of minimum Kullback entropy (mKE) should be used in the derivation of the probability distribution rather than the MaxEnt, thus leading to an exponential distribution with non Gaussian features. Furthermore, up to evaluating the distribution negentropy, we quantify the deviation of mKE distributions from MaxEnt ones and, thus, we rigorously justify the use of GUM-S1 recommendation also if we have further information on the range of variation of a quantity, namely, provided that its standard uncertainty is sufficiently small compared to the range.
An Optimal Algorithm for Finding Champions in Tournament Graphs
Creators: name: Beretta, Lorenzo
name: Nardini, Franco Maria
name: Trani, Roberto
name: Venturini, Rossano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: A tournament graph is a complete directed graph, which can be used to model a round-robin tournament between $n$ players. In this paper, we address the problem of finding a champion of the tournament, also known as Copeland winner, which is a player that wins the highest number of matches. In detail, we aim to investigate algorithms that find the champion by playing a low number of matches. Solving this problem allows us to speed up several Information Retrieval and Recommender System applications, including question answering, conversational search, etc. Indeed, these applications often search for the champion inducing a round-robin tournament among the players by employing a machine learning model to estimate who wins each pairwise comparison. Our contribution, thus, allows finding the champion by performing a low number of model inferences. We prove that any deterministic or randomized algorithm finding a champion with constant success probability requires $Ω(\ell n)$ comparisons, where $\ell$ is the number of matches lost by the champion. We then present an asymptotically-optimal deterministic algorithm matching this lower bound without knowing $\ell$, and we extend our analysis to three variants of the problem. Lastly, we conduct a comprehensive experimental assessment of the proposed algorithms on a question answering task on public data. Results show that our proposed algorithms speed up the retrieval of the champion up to $13\times$ with respect to the state-of-the-art algorithm that perform the full tournament.
Deep energy method in topology optimization applications
Creators: name: He, Junyan
name: Kushwaha, Shashank
name: Chadha, Charul
name: Koric, Seid
name: Abueidda, Diab
name: Jasiuk, Iwona
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: This paper explores the possibilities of applying physics-informed neural networks (PINNs) in topology optimization (TO) by introducing a fully self-supervised TO framework that is based on PINNs. This framework solves the forward elasticity problem by the deep energy method (DEM). Instead of training a separate neural network to update the density distribution, we leverage the fact that the compliance minimization problem is self-adjoint to express the element sensitivity directly in terms of the displacement field from the DEM model, and thus no additional neural network is needed for the inverse problem. The method of moving asymptotes is used as the optimizer for updating density distribution. The implementation of Neumann, Dirichlet, and periodic boundary conditions are described in the context of the DEM model. Three numerical examples are presented to demonstrate framework capabilities: (1) Compliance minimization in 2D under different geometries and loading, (2) Compliance minimization in 3D, and (3) Maximization of homogenized shear modulus to design 2D meta material unit cells. The results show that the optimized designs from the DEM-based framework are very comparable to those generated by the finite element method, and shed light on a new way of integrating PINN-based simulation methods into classical computational mechanics problems.
Prediction of Large Magnetic Moment Materials With Graph Neural Networks and Random Forests
Creators: name: Kaba, Sékou-Oumar
name: Groleau-Paré, Benjamin
name: Gauthier, Marc-Antoine
name: Tremblay, André-Marie
name: Verret, Simon
name: Gauvin-Ndiaye, Chloé
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: J.2

description: Magnetic materials are crucial components of many technologies that could drive the ecological transition, including electric motors, wind turbine generators and magnetic refrigeration systems. Discovering materials with large magnetic moments is therefore an increasing priority. Here, using state-of-the-art machine learning methods, we scan the Inorganic Crystal Structure Database (ICSD) of hundreds of thousands of existing materials to find those that are ferromagnetic and have large magnetic moments. Crystal graph convolutional neural networks (CGCNN), materials graph network (MEGNet) and random forests are trained on the Materials Project database that contains the results of high-throughput DFT predictions. For random forests, we use a stochastic method to select nearly one hundred relevant descriptors based on chemical composition and crystal structure. This gives results that are comparable to those of neural networks. The comparison between these different machine learning approaches gives an estimate of the errors for our predictions on the ICSD database. Validating our final predictions by comparisons with available experimental data, we found 15 materials that are likely to have large magnetic moments and have not been yet studied experimentally.
title: Koinzidenz eines fortgeschrittenen Nasenkarzinoms bei bestehender langjähriger Silberintoxikation: Ein Fallbericht
Creators: name: Eyth, Christian P.
name: Lang, Stephan
name: Kasper, Stefan
name: Abu Jawad, Jehad
name: Frahm, Uta
name: Dominas, Nina
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Kolloidales Silber, dessen Einsatz heute als obsolet gilt, erfreut sich in der Paramedizin wieder zunehmender Beliebtheit. Längerfristige Anwendung führt zu irreversibler Silberakkumulation in diversen Organsystemen. Zellkultur- und Tiermodell-Studien geben erste Hinweise auf eine[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Operator growth and Krylov construction in dissipative open quantum systems
Creators: name: Bhattacharya, Aranya
name: Nandy, Pratik
name: Nath, Pingal Pratyush
name: Sahu, Himanshu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Inspired by the universal operator growth hypothesis, we extend the formalism of Krylov construction in dissipative open quantum systems connected to a Markovian bath. Our construction is based upon the modification of the Liouvillian superoperator by the appropriate Lindbladian, thereby following the vectorized Lanczos algorithm and the Arnoldi iteration. This is well justified due to the incorporation of non-Hermitian effects due to the environment. We study the growth of Lanczos coefficients in the transverse field Ising model (integrable and chaotic limits) for boundary amplitude damping and bulk dephasing. Although the direct implementation of the Lanczos algorithm fails to give physically meaningful results, the Arnoldi iteration retains the generic nature of the integrability and chaos as well as the signature of non-Hermiticity through separate sets of coefficients (Arnoldi coefficients) even after including the dissipative environment. Our results suggest that the Arnoldi iteration is meaningful and more appropriate in dealing with open systems.
description: v3: Major updates, arguments on imaginary diagonals and the form of Arnoldi matrix added in sec 4 and Appendix C, to appear in JHEP
Control core of undirected complex networks
Creators: name: Yuan, Zhengzhong
name: Li, Jingwen
name: Zhao, Chen
name: Hu, Li
name: Shen, Zhesi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: With the development of complex networks, many researchers have paid greater attention to studying the control of complex networks over the last decade. Although some theoretical breakthroughs allow us to identify all driver nodes, we still lack an efficient method to identify the driver nodes and understand the roles of individual nodes in contributing to the control of a large complex network. Here, we apply a leaf removal process (LRP) to find a substructure of an undirected network, which is considered as the control core of the original network. Based on a strict mathematical proof, the control core obtained by the LRP has the same controllability as the original network, and it contains at least one set of driver nodes. With this method, we systematically investigate the structural property of the control core with respect to different average degrees of the original networks ($\langle k \rangle$). We denote the node density ($n_\text{core}$) and link density ($l_\text{core}$) to characterize the control core when applying the LRP, and we study the impact of $\langle k \rangle$ on $n_\text{core}$ and $l_\text{core}$ in two artificial networks: undirected Erdös-Rényi (ER) random networks and undirected scale-free (SF) networks. We find that $n_\text{core}$ and $l_\text{core}$ both change nonmonotonously with increasing $\langle k \rangle$ in the two typical undirected networks. With the aid of core percolation theory, we can offer the theoretical predictions for both $n_\text{core}$ and $l_\text{core}$ as a function of $\langle k \rangle$. Then, we recognize that finding the driver nodes in the control core is much more efficient than in the original network by comparing $n_{\text{D}}$, the controllability of the original network, and $n_{\text{core}}$, regardless of how $\langle k \rangle$ increases.
description: 8 pages,5 figures
Spectral and Timing Studies of Cyg X-1 in the Low/Hard State with Suzaku
Creators: name: Torii, Shunsuke
name: Yamada, Shin'ya
name: Makishima, Kazuo
name: Sakurai, Soki
name: Nakazawa, Kazuhiro
name: Noda, Hirofumi
name: Done, Chris
name: Takahashi, Hiromitsu
name: Gandhi, Poshak
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: From 2005 to 2009, 25 observations of Cyg X-1 were performed with Suzaku, achieving a total exposure of 446 ks. In all observations, the source was found in the low/hard state, while the 1.5--12.0 keV count rate of the All-Sky Monitor onboard RXTE varied by a factor of ~ 3. In each observation, the 10--60 keV HXD-PIN spectrum and the 60--400 keV HXD-GSO spectrum were fitted successfully by a thermal Comptonization model plus reflection by a thick neutral material. As the soft X-ray intensity increased, the Compton y-parameter was found to decrease from 1.0 to 0.6, while the solid angle of reflection to increase by ~ 30%. Also conducted was timing analysis over a frequency range of 0.001--10 Hz. As the source became brighter in soft X-rays, the characteristic frequency of hard X-ray variation increased from 0.03 to 0.3 Hz, while the fractional hard X-ray variation integrated over 0.001--0.01 Hz decreased by a factor of ~ 5. The signals in the 60--200 keV band were generally found to vary on shorter time scales than those in the 10--60 keV band. These spectral and timing results can be consistently interpreted by presuming that increases in the mass accretion rate cause the Comptonizing hot corona to shrink, while the optically-thick disk to intrude deeper therein.
description: 28 pages, 14 figures
Charge doping to flat AgF2 monolayers in a chemical capacitor setup
Creators: name: Jezierski, Daniel
name: Grzelak, Adam
name: Liu, XiaoQiang
name: Pandey, Shishir Kumar
name: Gastiasoro, Maria N.
name: Lorenzana, José
name: Feng, Ji
name: Grochala, Wojciech
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Flat monolayers of silver II fluoride, which could be obtained by epitaxial deposition on an appropriate substrate, have been recently predicted to exhibit very strong antiferromagnetic superexchange and to have large potential for ambient pressure superconductivity if doped to an optimal level. It was shown that AgF2 could become a magnetic glue based superconductor with a critical superconducting temperature approaching 200 K at optimum doping. In the current work we calculate the optimum doping to correspond to 14% of holes per formula unit, i.e. quite similar to that for oxocuprates II. Furthermore, using DFT calculations we show that flat AgF2 single layers can indeed be doped to a controlled extent using a recently proposed chemical capacitor setup. Hole doping associated with formation of Ag III proves to be difficult to achieve in the setup explored in this work as it falls at verge of charge stability of fluoride anions and does not affect the d x2 minus y2 manifold . However, in the case of electron doping, manipulation of different factors, such as number of dopant layers and the thickness of the separator, permits fine tuning of the doping level - and concomitantly TC - all the way from underdoped to overdoped regime (in a similar manner as chemical doping for the Nd2CuO4 analogue).
description: 23 pages, 18 figures
title: Onkologische Ergebnisse nach chirurgischer Behandlung von Karzinomen des Vestibulum nasi
Creators: name: Federspil, Philippe A.
name: Zaoui, Karim
name: Plinkert, Peter K.
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Karzinomen des Vestibulum nasi können eine aggressive Tumorbiologie zeigen.     Material und Methoden: Von 2005 bis 2013 wurde 27 Patienten (18 Männer und 9 Frauen) im Alter von 37 bis 79 Jahren (im Mittel 59 Jahre) chirurgisch behandelt.  Die T-Kategorie verteilte sich nach der[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie