cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Throughput Scaling Laws for Wireless Networks with Fading Channels
Creators: name: Ebrahimi, Masoud
name: Maddah-Ali, Mohammad A.
name: Khandani, Amir K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A network of n communication links, operating over a shared wireless channel, is considered. Fading is assumed to be the dominant factor affecting the strength of the channels between transmitter and receiver terminals. It is assumed that each link can be active and transmit with a constant power P or remain silent. The objective is to maximize the throughput over the selection of active links. By deriving an upper bound and a lower bound, it is shown that in the case of Rayleigh fading (i) the maximum throughput scales like $\log n$ (ii) the maximum throughput is achievable in a distributed fashion. The upper bound is obtained using probabilistic methods, where the key point is to upper bound the throughput of any random set of active links by a chi-squared random variable. To obtain the lower bound, a decentralized link activation strategy is proposed and analyzed.
description: Submitted to IEEE Transactions on Information Theory (Revised)
A Tribute to Dr. Jack Taunton
Creators: name: Scott, Robert
Publisher: name: The Health & Fitness Journal of Canada
Year: 2021

description: Over the years, Dr. Taunton’s excellence in academics and with various sports teams continues to be an inspiration to all the people who know him.
description: The Health & Fitness Journal of Canada, Vol. 13 No. 4 (2020): Special Tribute to Dr. Jack and Cheryl Taunton (Part Two)
On the Mapping of Time-Dependent Densities onto Potentials in Quantum Mechanics
Creators: name: Baer, Roi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The mapping of time-dependent densities on potentials in quantum mechanics is critically examined. The issue is of significance ever since Runge and Gross (Phys. Rev. Lett. 52, 997 (1984)) established the uniqueness of the mapping, forming a theoretical basis for time-dependent density functional theory. We argue that besides existence (so called v-representability) and uniqueness there is an important question of stability and chaos. Studying a 2-level system we find innocent, almost constant densities that cannot be constructed from any potential (non-existence). We further show via a Lyapunov analysis that the mapping of densities on potentials has chaotic regions in this case. In real space the situation is more subtle. V-representability is formally assured but the mapping is often chaotic making the actual construction of the potential almost impossible. The chaotic nature of the mapping, studied for the first time here, has serious consequences regarding the possibility of using TDDFT in real-time settings.
Passing the Torch
Creators: name: Damji, Faraz
Publisher: name: The Health & Fitness Journal of Canada
Year: 2021

description: This article highlights the significant impact that Dr. Jack Taunton had on the life of an aspiring medical student.
description: The Health & Fitness Journal of Canada, Vol. 13 No. 4 (2020): Special Tribute to Dr. Jack and Cheryl Taunton (Part Two)
Jack and Cheryl: Dynamic Team
Creators: name: Mahony, Mike
Publisher: name: The Health & Fitness Journal of Canada
Year: 2021

description: Straight from the heart is my tribute to an incredible duo that have taught and given so much to all of us! Thank you, Jack and Cheryl!
description: The Health & Fitness Journal of Canada, Vol. 13 No. 4 (2020): Special Tribute to Dr. Jack and Cheryl Taunton (Part Two)
Towards a New Standard Theory for Astrophysical Disk Accretion
Creators: name: Kuncic, Zdenka
name: Bicknell, Geoffrey V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We briefly review recent developments in black hole accretion disk theory, placing new emphasis on the vital role played by magnetohydrodynamic (MHD) stresses in transporting angular momentum. The apparent universality of accretion-related outflow phenomena is a strong indicator that vertical transport of angular momentum by large-scale MHD torques is important and may even dominate radial transport by small-scale MHD turbulence. This leads to an enhanced overall rate of angular momentum transport and allows accretion of matter to proceed at an interesting rate. Furthermore, we argue that when vertical transport is important, the radial structure of the accretion disk is modified and this affects the disk emission spectrum. We present a simple model demonstrating that energetic, magnetically-driven outflows give rise to a disk spectrum that is dimmer and redder than a standard accretion disk accreting at the same rate. We briefly discuss the implications of this key result for accreting black holes in different astrophysical systems.
description: Accepted for publication as brief review in Mod. Phys. Let. A
In Appreciation of Cheryl and Jack Taunton: Role Models and Mentors
Creators: name: Warburton, Declan
name: Warburton, Aedan
Publisher: name: The Health & Fitness Journal of Canada
Year: 2021

description: This commentary outlines our experiences over the years with the Tauntons. We highlight how much they have done for us and the examples that they continue to provide for excellence in research, exercise, medicine, and life in general. We also comment on how the Tauntons have helped shape our lives and how they have been great role models for us, our parents, and many of our friends. We are honoured to know the Tauntons and look forward to learning from them for years to come.
description: The Health & Fitness Journal of Canada, Vol. 13 No. 4 (2020): Special Tribute to Dr. Jack and Cheryl Taunton (Part Two)
Perturbation theory for solitons of the Fokas--Lenells equation : Inverse scattering transform approach
Creators: name: Lashkin, V. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present perturbation theory based on the inverse scattering transform method for solitons described by an equation with the inverse linear dispersion law $ω\sim 1/k$, where $ω$ is the frequency and $k$ is the wave number, and cubic nonlinearity. This equation, first suggested by Davydova and Lashkin for describing dynamics of nonlinear short-wavelength ion-cyclotron waves in plasmas and later known as the Fokas--Lenells equation, arises from the first negative flow of the Kaup--Newell hierarchy. Local and nonlocal integrals of motion, in particular the energy and momentum of nonlinear ion-cyclotron waves, are explicitly expressed in terms of the discrete (solitonic) and continuous (radiative) scattering data. Evolution equations for the scattering data in the presence of a perturbation are presented. Spectral distributions in the wave number domain of the energy emitted by the soliton in the presence of a perturbation are calculated analytically for two cases: (i) linear damping that corresponds to Landau damping of plasma waves, and (ii) multiplicative noise which corresponds to thermodynamic fluctuations of the external magnetic field (thermal noise) and/or the presence of a weak plasma turbulence.
The Legacy of Cheryl and Jack Taunton in Sports and Exercise Medicine: Pioneers, Mentors, and Friends
Creators: name: Warburton, Darren
name: Bredin, Shannon
Publisher: name: The Health & Fitness Journal of Canada
Year: 2021

description: This commentary outlines the remarkable contributions of Cheryl and Jack Taunton to the exercise sciences, kinesiology, high performance sport, and sports and exercise medicine. We also highlight the role that the Tauntons have played in our lives. We outline our more than 20 year relationship with the Tauntons beginning as colleagues progressing to trusting friends. We emphasize how many of our achievements and that of our trainees and children can be attributed directly to the mentorship, guidance, and friendship provided by Cheryl and Jack. We discuss our experiences working together with Cheryl and Jack during important international events (such as the 2010 Winter and Paralympic Games and the Masters Games), working with various professional teams and Olympic athletes, and various other initiatives that they have spearheaded over the years. Through these experiences, we have seen first-hand the influence that this dynamic duo has had on the lives of others and elite sport, clinical physiology, and sports and exercise medicine (to name just a few areas). We are honoured to call them friends and mentors.
description: The Health & Fitness Journal of Canada, Vol. 13 No. 4 (2020): Special Tribute to Dr. Jack and Cheryl Taunton (Part Two)
Multi-hole models for deterministically placed acceptor arrays in silicon
Creators: name: Zhu, Jianhua
name: Wu, Wei
name: Fisher, Andrew J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We compute the electronic structure of acceptor clusters in silicon by using three methods to include electron correlations: the full configuration interaction, the Heitler-London approximation, and the unrestricted Hartree-Fock method. We show both the HL approach and the UHF method are good approximations to the ground state of the full CI calculation for a pair of acceptors and for finite linear chains. The total energies for finite linear chains show the formation of a 4-fold degenerate ground state when there is a weak bond at the end of the chain, which is shown to be a manifold of topological edge states. We identify a change in the angular momentum composition of the ground state at a critical pattern of bond lengths and show it is related to a crossing in the Fock matrix eigenvalues. We also test the symmetry of the UHF solution and compare it to the full CI; the symmetry is broken under almost all the arrangements by the formation of a magnetic state in UHF, and we find further broken symmetries for some particular arrangements related to crossings or potential crossings between the Fock-matrix eigenvalues. We also compute the charge distributions across the acceptors obtained from the eigenvectors of the Fock matrix: with weak bonds at the chain ends, two holes are localized at either end of the chain while the others have a nearly uniform distribution over the middle; this implies the existence of the non-trivial edge states. We apply the UHF method to treat an infinite linear chain with periodic boundary conditions. We find the band structures in the UHF approximation and compute the Zak phases for the occupied Fock-matrix eigenvalues; we find they do not correctly predict the topological edge states in this interacting system. We find direct study of the quantum numbers characterising the edge states provides a better insight into their topological nature.
description: 18 pages, 17 figures
Stable recovery of non-compactly supported electromagnetic potentials in unbounded domain
Creators: name: Kian, Yavar
name: Soussi, Yosra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R30

description: We consider the inverse problem of determining an electromagnetic potential appearing in an infinite cylindrical domain from boundary measurements. More precisely, we prove the stable recovery of some general class of magnetic field and electric potential from boundary measurements. Assuming some knowledge of the unknown coefficients close to the boundary, we obtain also some results of stable recovery with measurements restricted to some portion of the boundary. Our approach combines construction of complex geometric optics solutions and Carleman estimates suitably designed for our stability results stated in an unbounded domain.
title: RESOLVING LAND DISPUTES ON KOH TAO: LEGAL FRAMEWORKS, HISTORICAL CONTEXT, AND PATHWAYS TO EQUITABLE SOLUTIONS
Creators: name: Akkakorn CHAIYAPONG
Publisher: name: Asian Crime and Society Review
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Land Rights Disputes
Royal Parcel Act 2019
Tourism Development

description: Asian Crime and Society Review, 12, 1, Article 7
On Charge Conservation and The Equivalence Principle in the Noncommutative Spacetime
Creators: name: Lee, Youngone
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate one of the consequences of the twisted Poincare symmetry. We derive the charge conservation law and show that the equivalence principle is satisfied in the canonical noncommutative spacetime. We applied the twisted Poincare symmetry to the Weinberg's analysis. To this end, we generalize our earlier construction of the twisted S matrix \cite{Bu}, which apply the noncommutativity to the fourier modes, to the massless fields of integer spins. The transformation formula for the twisted S matrix for the massless fields of integer spin has been obtained. For massless fields of spin 1, we obtain the conservation of charge, and the universality of coupling constant for massless fields of spin 2, which can be interpreted as the equality of gravitational mass and inertial mass, i.e., the equivalence principle.
description: typos corrected, references added, accepted for publication in Phys. Rev. D
Lattice with a Twist : Helical Waveguides for Ultracold Matter
Creators: name: Bhattacharya, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the waveguiding properties of the optical interference pattern of two counter-propagating Laguerre-Gaussian beams. The number, helicity, radius, pitch, depth and frequencies of transverse confinement of the waveguides are simply related to the beam parameters. Quantitative connections to the familiar Gaussian optical lattice are made and an application to quantum transport is suggested.
description: Accepted for publication in Optics Communications
Direct Detection Under Tukey Signalling
Creators: name: Tasbihi, Amir
name: Kschischang, Frank R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A new direct-detection-compatible signalling scheme is proposed for fiber-optic communication over short distances. Controlled inter-symbol interference is exploited to extract phase information, thereby achieving spectral efficiencies about one bit less, per second per hertz, of those of a coherent detector.
description: Submitted to J. Lightwave Techn. on May 26th, 2021. First revision on July 11th, 2021. Second revision on August 7th, 2021
Parallelizing Quantum Circuits
Creators: name: Broadbent, Anne
name: Kashefi, Elham
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a novel automated technique for parallelizing quantum circuits via forward and backward translation to measurement-based quantum computing patterns and analyze the trade off in terms of depth and space complexity. As a result we distinguish a class of polynomial depth circuits that can be parallelized to logarithmic depth while adding only polynomial many auxiliary qubits. In particular, we provide for the first time a full characterization of patterns with flow of arbitrary depth, based on the notion of influencing paths and a simple rewriting system on the angles of the measurement. Our method leads to insightful knowledge for constructing parallel circuits and as applications, we demonstrate several constant and logarithmic depth circuits. Furthermore, we prove a logarithmic separation in terms of quantum depth between the quantum circuit model and the measurement-based model.
description: 34 pages, 14 figures; depth complexity, measurement-based quantum computing and parallel computing
Ab initio study of anisotropic mechanical and electronic properties of strained carbon-nitride nanosheet with interlayer bonding
Creators: name: Cheng, Hao
name: Zheng, Jin-Cheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Due to the noticeable structural similarity and being neighborhood in periodic table of group-IV and -V elemental monolayers, whether the combination of group-IV and -V elements could have stable nanosheet structures with optimistic properties has attracted great research interest. In this work, we performed first-principles simulations to investigate the elastic, vibrational and electronic properties of the carbon nitride (CN) nanosheet in the puckered honeycomb structure with covalent interlayer bonding. It has been demonstrated that the structural stability of CN nanosheet is essentially maintained by the strong interlayer \so\ bonding between adjacent carbon atoms in the opposite atomic layers. A negative Poisson's ratio in the out-of-plane direction under biaxial deformation, and the extreme in-plane stiffness of CN nanosheet, only slightly inferior to the monolayer graphene, are revealed. Moreover, the highly anisotropic mechanical and electronic response of CN nanosheet to tensile strain have been explored.
description: Revised with minor corrections and addition of Supplementary Material
Multi-Perspective Anomaly Detection
Creators: name: Jakob, Peter
name: Madan, Manav
name: Schmid-Schirling, Tobias
name: Valada, Abhinav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Anomaly detection is a critical problem in the manufacturing industry. In many applications, images of objects to be analyzed are captured from multiple perspectives which can be exploited to improve the robustness of anomaly detection. In this work, we build upon the deep support vector data description algorithm and address multi-perspective anomaly detection using three different fusion techniques, i.e., early fusion, late fusion, and late fusion with multiple decoders. We employ different augmentation techniques with a denoising process to deal with scarce one-class data, which further improves the performance (ROC AUC $= 80\%$). Furthermore, we introduce the dices dataset, which consists of over 2000 grayscale images of falling dices from multiple perspectives, with 5\% of the images containing rare anomalies (e.g., drill holes, sawing, or scratches). We evaluate our approach on the new dices dataset using images from two different perspectives and also benchmark on the standard MNIST dataset. Extensive experiments demonstrate that our proposed {multi-perspective} approach exceeds the state-of-the-art {single-perspective anomaly detection on both the MNIST and dices datasets}. To the best of our knowledge, this is the first work that focuses on addressing multi-perspective anomaly detection in images by jointly using different perspectives together with one single objective function for anomaly detection.
description: 20 pages, 5 figures, 8 tables
Θεός, κόσμος, άνθρωπος: σπουδή στα κείμενα του Αλέξανδρου Παπαδιαμάντη και του Νίκου Καζαντζάκη
Creators: name: Χατζηαποστόλου, Μαρία Ν.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Θεός
Κόσμος
Άνθρωπος
Καζαντζάκης-Παπαδιαμάντης
God
World
Human being
Kazantzakis-Papadiamantis

description: Σκοπός της διατριβής είναι η συγκριτική μελέτη της σκέψης και του έργου των δύο συγγραφέων, μέσα από το καθολικό έργο τους, καθώς και μέσα από τις μελέτες των ερευνητών τους. Εξετάστηκαν τα κοινά χαρακτηριστικά και οι κοινοί άξονες με επίκεντρο τη θεολογική και φιλοσοφική ματιά τους για το Θεό, τον άνθρωπο και τον κόσμο που τον περιβάλλει. Στην πορεία της επιστημονικής αυτής μελέτης αποδείχθηκε η κοινή γραμμή που ακολουθούν οι δύο συγγραφείς –πάντα με την ταυτόχρονη διατήρηση της ιδιαιτερότητάς τους– όσον αφορά την αγάπη τους και την αγωνία τους για τον άνθρωπο και τη σχέση του με το Θεό και τον κόσμο, τον οποίο κατανοούν ως Εκκλησία και Δημιουργία του Θεού. Τελικώς, επετεύχθη η κατάρριψη των στερεοτύπων γύρω από το πρόσωπο των δύο συγγραφέων με επιστημονικά επιχειρήματα και πηγές, καθώς και η άρτια έκφραση της σκέψης τους.
description: The aim of the thesis is a comparative study of the thought and the work of the two authors, through their global work and through the studies of the researchers. Examined were the common characteristics and common axes, centered on their theological and philosophical view on God, the human being and the surrounding world. In the course of this scientific study the common line followed by the two authors was proved –always maintaining their specificity– about their care and their concern for the human being and his relationship with God and the world, which is understood as Church and as God’s creation. Finally, was achieved the breaking down of stereotypes concerning the person of the two authors throughout scientific arguments and sources, as well as the excellent expression of their thought.
Nuclear energy density functionals from empirical ground-state densities
Creators: name: Accorto, Giacomo
name: Naito, Tomoya
name: Liang, Haozhao
name: Niksic, Tamara
name: Vretenar, Dario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A model is developed, based on the density functional perturbation theory and the inverse Kohn-Sham method, that can be used to improve relativistic nuclear energy density functionals towards an exact but unknown Kohn-Sham exchange-correlation functional. The improved functional is determined by empirical exact ground-state densities of finite systems. A test of the model and an illustrative calculation are performed, starting from two different approximate functionals, to reproduce the parameters and density dependence of a target functional, using exact ground-state densities of symmetric N=Z systems.
Critical Scaling of Shear Viscosity at the Jamming Transition
Creators: name: Olsson, Peter
name: Teitel, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We carry out numerical simulations to study transport behavior about the jamming transition of a model granular material in two dimensions at zero temperature. Shear viscosity ηis computed as a function of particle volume density ρand applied shear stress σ, for diffusively moving particles with a soft core interaction. We find an excellent scaling collapse of our data as a function of the scaling variable σ/|ρ_c-ρ|^Δ, where ρ_c is the critical density at σ=0 ("point J"), and Δis the crossover scaling critical exponent. Our results show that jamming is a true critical phenomenon, extending to driven steady states along the non-equilibrium σaxis of the ρ-σphase diagram.
description: replaced with published version; new references added
Stride and Translation Invariance in CNNs
Creators: name: Mouton, Coenraad
name: Myburgh, Johannes C.
name: Davel, Marelie H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Convolutional Neural Networks have become the standard for image classification tasks, however, these architectures are not invariant to translations of the input image. This lack of invariance is attributed to the use of stride which ignores the sampling theorem, and fully connected layers which lack spatial reasoning. We show that stride can greatly benefit translation invariance given that it is combined with sufficient similarity between neighbouring pixels, a characteristic which we refer to as local homogeneity. We also observe that this characteristic is dataset-specific and dictates the relationship between pooling kernel size and stride required for translation invariance. Furthermore we find that a trade-off exists between generalization and translation invariance in the case of pooling kernel size, as larger kernel sizes lead to better invariance but poorer generalization. Finally we explore the efficacy of other solutions proposed, namely global average pooling, anti-aliasing, and data augmentation, both empirically and through the lens of local homogeneity.
Integrable extensions of classical elliptic integrable systems
Creators: name: Olshanetsky, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37J35

description: In this article we consider two particular examples of general construction proposed in arXiv:2012.15529. We consider the integrable extensions of the classical elliptic Calogero-Moser model of N particles with spin and the integrable Euler-Arnold top related to the group SL(N,C). The extended systems has additional N-1 degrees of freedom and can be described in terms of the Darboux variables.
description: 14 pages. Contribution in the TMP volume dedicated to the ninetieth anniversary of M.K. Polivanov's birth
Search for Effect of Influence from Future in Large Hadron Collider
Creators: name: Nielsen, Holger B.
name: Ninomiya, Masao
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We propose an experiment which consists of drawing a card and using it to decide restrictions on the running of Large Hadron Collider (LHC for short) at CERN, such as luminosity, and beam energy. There may potentially occur total shut down. The purpose of such an experiment is to search for influence from the future, that is, backward causation. Since LHC will produce particles of a mathematically new type of fundamental scalars, i.e., the Higgs particles, there is potentially a chance to find unseen effects, such as on influence going from future to past, which we suggest in the present paper.
description: 18pp, comments added, change of title and corrections of main text; v4:minor typos corrected
Variation reduction of brightness and pH of pulp sent to a paper mill
Creators: name: Napassavong Rojanarowan
name: Nattaporn Sookpom
Publisher: name: Faculty of Engineering, Khon Kaen University
Year: 2015
Subjects: Design of experiment,Response surface design,Variation reduction,Pulp to paper mill

description: 1, 42, KKU Engineering Journal
Interlacing inequalities for eigenvalues of sums of matrices
Creators: name: Afari, Ernest
Publisher: name: University of British Columbia
Year: 2010

description: We begin with some historical remarks in section 1, where we present the basic interlacing inequalities. In the rest of the thesis we discuss R.C.Thompson's contributions to the subject. His main concern is to extend the inequalities to include more than just one of the (n — 1) x (n — 1) principal submatrices. It is clear that for each such submatrix, the interlacing inequalities are valid, but the resulting set of inequalities is not sufficient to guarantee the existence of a matrix whose principal submatrices have eigenvalues satisfying these inequalities. We have included two examples to show that Thompson's inequalities are necessary.
Stochastic periodic orbits in fast-slow systems with self-induced stochastic resonance
Creators: name: Zhu, Jinjie
name: Nakao, Hiroya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Noise is ubiquitous in various systems. In systems with multiple timescales, noise can induce various coherent behaviors. Self-induced stochastic resonance (SISR) is a typical noise-induced phenomenon identified in such systems, wherein noise acting on the fast subsystem causes stochastic resonancelike boundary crossings. In this paper, we analyze the stochastic periodic orbits caused by SISR in fast-slow systems. By introducing the notion of the mean first passage velocity toward the boundary, a distance matching condition is established, through which the critical transition position of boundary crossing can be calculated. The theoretical stochastic periodic orbit can be accordingly obtained via gluing the dynamics along the slow manifolds. It is shown that the theoretical predictions are in excellent agreement with the results of Monte Carlo simulations for a piecewise linear FitzHugh-Nagumo system even for large noise. Furthermore, the proposed method is extended to the original FitzHugh-Nagumo system and also found to exhibit consistent accuracy. These results provide insights into the mechanisms of coherent behaviors in fast-slow systems and will shed light on the coherent behaviors in more complex systems and large networks.
description: 25 pages, 15 figures
Relativistic spin sum rules and the role of the pivot
Creators: name: Lorcé, Cédric
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Spin sum rules depend on the choice of a pivot, i.e. the point about which the angular momentun is defined, usually identified with the center of the nucleon. The latter is however not unique in a relativistic theory and has led to apparently contradictory results in the literature. Using the recently developed phase-space approach, we compute for the first time the contribution associated with the motion of the center of the nucleon, and we derive a general spin sum rule which reduces to established results after appropriate choices for the pivot and the spin component.
description: 16 pages, 1 figure, 1 table
Ορυκτολογία, πετρολογία και κοιτασματολογία οφειολίθων Ξερολίβαδου, Βούρινου της Δυτικής Μακεδονίας
Creators: name: Τζάμος, Ευάγγελος Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Χρωμίτης
Χρωμιτίτης
Οφειόλιθοι
Βούρινος
Chromite
Chromitite
Ophiolites
Vourinos

description: Η παρούσα εργασία έχει ως σκοπό την μελέτη της ορυκτολογίας, της πετρολογίας και της κοιτασματολογίας των οφειολίθων του μεταλλείου Ξερολίβαδου του οφειολιθικού συμπλέγματος του Βούρινου. Η περιοχή έρευνας ανήκει στο οφειολιθικό σύμπλεγμα του Βούρινου. Η οφειολιθική ακολουθία αποτελείται κυρίως από μανδυακά πετρώματα, καθώς και από μία διατηρημένη μαγματική ακολουθία. Η μανδυακή ενότητα περιλαμβάνει χαρτσβουργίτες και δουνίτες με πολύ συχνή μεταλλοφορία χρωμίτη, ενώ η σωρειτική ενότητα αποτελείται από δουνίτες, γάββρους, νορίτες και βερλίτες. Στα ανώτερα επίπεδα της σωρειτικής ενότητας, εμφανίζονται διορίτες, διαβάσες, δακίτες και γρανοφύρες. Το μεταλλείο Ξερολίβαδου βρίσκεται στο Νότιο Βούρινο (Όρος Φλάμπουρο) και ανήκει στην βάση της οφειολιθικής ακολουθίας του Βούρινου. Το κοίτασμα χρωμίτη φιλοξενείται σε σερπεντινίτες οι οποίοι έχουν προκύψει από δουνιτικής αρχικής σύστασης υπερβασικά πετρώματα. Το δουνιτικό σώμα του Ξερολίβαδου είναι το μεγαλύτερο του Βούρινου και εμφανίζεται επιφανειακά σε έκταση περίπου 3 επί 1 χλμ. Ο δουνίτης περιβάλλεται από τον κύριο σχηματισμό της περιοχής, τον χαρτσβουργίτη. Τρεις (3) κύριες ομάδες ρηγμάτων (F1, F2 και Fm) χωρίζουν το μεταλλείο σε 4 τομείς: το Βόρειο, τον Κεντρικό, το Νότιο και το Νοτιοδυτικό. Ο τελευταίος δεν εκμεταλλεύτηκε ποτέ. Η μεταλλοφορία χρωμίτη εντοπίζεται σε επτά (7) κύρια λοβόμορφα χρωμιτικά σώματα που διατρέχουν το μεταλλείο κατά μήκος και φιλοξενούν μεταλλοφορία μορφής πλακών ή ταινιών.
description: The present thesis studies the mineralogy, petrology and ore geology of the Xerolivado Mine ophiolites which belong to the Vourinos ophiolitic complex.The investigated area belongs to the Vourinos ophiolitic complex. The ophiolitic sequence consists of mantle rocks (mainly) and of a well preserved magmatic sequence. The mantle unit consists of hartzburgites and dunites which very often host chrome ores, whereas the magmatic sequence consists of dunites, gabbros, norites and wherlites. At the upper part of the magmatic sequence, diorites, diabases, dacites and granophyres are found. The Xerolivado Mine is located at Southern Vourinos (Mountain Flampouro) and it belongs to the base of the ophiolitic sequence of Vourinos. The chrome ore is hosted by serpentines which have occurred by ultramafic rocks that had originally dunitic composition. The Xerolivado dunitic body is the largest in Vourinos and it exposed surficial at an area of 3 x 1 km. Dunite is surrounded by hartzburgite, the dominating geologic formation of the area. Three (3) main fault groups (F1, F2 and Fm) divide the mine in 4 sectors: Northern, Central, Southern and Southwestern. The latter was never exploited. Chrome ores are located at seven (7) main podiform chromite bodies that traverse the mine by length and host schlieren (or banded) chromite ores.
Tests of Bayesian Model Selection Techniques for Gravitational Wave Astronomy
Creators: name: Cornish, Neil J.
name: Littenberg, Tyson B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The analysis of gravitational wave data involves many model selection problems. The most important example is the detection problem of selecting between the data being consistent with instrument noise alone, or instrument noise and a gravitational wave signal. The analysis of data from ground based gravitational wave detectors is mostly conducted using classical statistics, and methods such as the Neyman-Pearson criteria are used for model selection. Future space based detectors, such as the \emph{Laser Interferometer Space Antenna} (LISA), are expected to produced rich data streams containing the signals from many millions of sources. Determining the number of sources that are resolvable, and the most appropriate description of each source poses a challenging model selection problem that may best be addressed in a Bayesian framework. An important class of LISA sources are the millions of low-mass binary systems within our own galaxy, tens of thousands of which will be detectable. Not only are the number of sources unknown, but so are the number of parameters required to model the waveforms. For example, a significant subset of the resolvable galactic binaries will exhibit orbital frequency evolution, while a smaller number will have measurable eccentricity. In the Bayesian approach to model selection one needs to compute the Bayes factor between competing models. Here we explore various methods for computing Bayes factors in the context of determining which galactic binaries have measurable frequency evolution. The methods explored include a Reverse Jump Markov Chain Monte Carlo (RJMCMC) algorithm, Savage-Dickie density ratios, the Schwarz-Bayes Information Criterion (BIC), and the Laplace approximation to the model evidence. We find good agreement between all of the approaches.
description: 11 pages, 6 figures
Magnetic Flux Effects in Statistical Magnetism of Electron Gas
Creators: name: Lin, De-Hone
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The effects of magnetic flux in statistical magnetisms, including Pauli paramagnetism, Landau diamagnetism, and De Hass-van Alphen oscillation, are discussed. It is shown that the diamagnetism could be much increased by the fractional magnetic flux, and the amplitude of the magnetic oscillation of De Hass-van Alphen can be amplified by the quantum effect of the flux.
Defining Utility Functions for Multi-Stakeholder Self-Adaptive Systems
Creators: name: Wohlrab, Rebekka
name: Garlan, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: [Context and motivation:] For realistic self-adaptive systems, multiple quality attributes need to be considered and traded off against each other. These quality attributes are commonly encoded in a utility function, for instance, a weighted sum of relevant objectives. [Question/problem:] The research agenda for requirements engineering for self-adaptive systems has raised the need for decision-making techniques that consider the trade-offs and priorities of multiple objectives. Human stakeholders need to be engaged in the decision-making process so that the relative importance of each objective can be correctly elicited. [Principal ideas/results:] This research preview paper presents a method that supports multiple stakeholders in prioritizing relevant quality attributes, negotiating priorities to reach an agreement, and giving input to define utility functions for self-adaptive systems. [Contribution:] The proposed method constitutes a lightweight solution for utility function definition. It can be applied by practitioners and researchers who aim to develop self-adaptive systems that meet stakeholders' requirements. We present details of our plan to study the application of our method using a case study.
description: REFSQ 2021: Requirements Engineering: Foundation for Software Quality
Reconfigurable Logic Gates Using Single-Electron Spin Transistors
Creators: name: Hai, Pham Nam
name: Sugahara, Satoshi
name: Tanaka, Masaaki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose and numerically analyze novel reconfigurable logic gates using "single-electron spin transistors" (SESTs), which are single-electron transistors (SETs) with ferromagnetic electrodes and islands. The output characteristics of a SEST depend on the relative magnetization configuration of the ferromagnetic island with respect to the magnetization of the source and the drain, i.e., high current drive capability in parallel magnetization and low current drive capability in antiparallel magnetization. The summation of multiple input signals can be achieved by directly coupling multiple input gate electrodes to the SEST island, without using a floating gate. A Tucker-type inverter with a variable threshold voltage, a reconfigurable AND/OR logic gate, and a reconfigurable logic gate for all symmetric Boolean functions are proposed and simulated using the Monte Carlo method.
title: PATHWAYS TO SUCCESS: EXAMINING THE INFLUENCE OF ENTREPRENEURIAL POTENTIAL AND BUSINESS MANAGEMENT ON SOUTHERN THAI AGRI-FOOD COMMUNITY ENTERPRISE PERFORMANCE
Creators: name: Sasadee KAMPHAENGDEE
Publisher: name: Asian Interdisciplinary and Sustainability Review
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Entrepreneurial Potential
Business Management
Performance
Community Enterprises
Thailand

description: Asian Interdisciplinary and Sustainability Review, 14, 1, Article 7
A Cascade Model for Particle Concentration and Enstrophy in Fully Developed Turbulence with Mass Loading Feedback
Creators: name: Hogan, Robert C.
name: Cuzzi, Jeffrey N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A cascade model is described based on multiplier distributions determined from 3D direct numerical simulations (DNS) of turbulent particle laden flows, which include two-way coupling between the phases at global mass loadings equal to unity. The governing Eulerian equations are solved using pseudo-spectral methods on up to 512**3 computional grid points. DNS results for particle concentration and enstrophy at Taylor microscale Reynolds numbers in the range 34 - 170 were used to directly determine multiplier distributions (PDFs) on spatial scales 3 times the Kolmogorov length scale. The width of the PDFs, which is a measure of intermittency, decreases with increasing mass loading within the local region where the multipliers are measured. The functional form of this dependence is not sensitive to Reynolds numbers in the range considered. A partition correlation probability is included in the cascade model to account for the observed spatial anticorrelation between particle concentration and enstrophy. Joint probability distribution functions of concentration and enstrophy generated using the cascade model are shown to be in excellent agreement with those derived directly from our 3D simulations. Probabilities predicted by the cascade model are presented at Reynolds numbers well beyond what is achievable by direct simulation. These results clearly indicate that particle mass loading significantly reduces the probabilities of high particle concentration and enstrophy relative to those resulting from unloaded runs. Particle mass density appears to reach a limit at around 100 times the gas density. This approach has promise for significant computational savings in certain applications.
description: Accepted by Phys. Rev. E; in press; 9 pages, 8 figures; the research is relevant to turbulent concentration of chondrules and other small particles in protoplanetary nebulae. Solid/gas mass ratios as large as 100 are possible before turbulence is damped, for particles in this size range
Bulk private curves require large conditional mutual information
Creators: name: May, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove a theorem showing that the existence of "private" curves in the bulk of AdS implies two regions of the dual CFT share strong correlations. A private curve is a causal curve which avoids the entanglement wedge of a specified boundary region $\mathcal{U}$. The implied correlation is measured by the conditional mutual information $I(\mathcal{V}_1:\mathcal{V}_2\,|\,\mathcal{U})$, which is $O(1/G_N)$ when a private causal curve exists. The regions $\mathcal{V}_1$ and $\mathcal{V}_2$ are specified by the endpoints of the causal curve and the placement of the region $\mathcal{U}$. This gives a causal perspective on the conditional mutual information in AdS/CFT, analogous to the causal perspective on the mutual information given by earlier work on the connected wedge theorem. We give an information theoretic argument for our theorem, along with a bulk geometric proof. In the geometric perspective, the theorem follows from the maximin formula and entanglement wedge nesting. In the information theoretic approach, the theorem follows from resource requirements for sending private messages over a public quantum channel.
description: typo fixes, minor clarifications
Hopping Conduction and Bacteria: Transport in Disordered Reaction-Diffusion Systems
Creators: name: Missel, Andrew R.
name: Dahmen, Karin A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We report some basic results regarding transport in disordered reaction-diffusion systems with birth (A->2A), death (A->0), and binary competition (2A->A) processes. We consider a model in which the growth process is only allowed to take place in certain areas--"oases"--while the rest of space--the "desert"--is hostile to growth. In the limit of low oasis density, transport is mediated through rare "hopping" events, necessitating the inclusion of discreteness effects in the model. By first considering transport between two oases, we are able to derive an approximate expression for the average time taken for a population to traverse a disordered medium.
description: 4 pages, 2 figures
Collagenase Nanocapsules: An Approach to Fibrosis Treatment
Creators: name: Villegas, MR
name: Baeza, A
name: Usategui, A
name: Ortiz-Romero, PL
name: Pablos, JL
name: Vallet-Regi, M
Publisher: name: arXiv
Year: 2021
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Fibrosis is a common lesion in different pathologic diseases and is defined by the excessive accumulation of collagen. Different approaches have been used to treat different conditions characterized by fibrosis. FDA and EMA approved collagenase to treat palmar fibromatosis, Dupuyten disease. EMA approved additionally its use in severe Peyronie disease, but it has been used off label in other conditions.1, 2. Approved treatment includes up to 3, in palmar fibromatosis or up to 8, in penile fibromatosis, injections followed by finger extension or penile modelling procedures, typically causing severe pain. Frequently single injections are enough to treat palmar fibromatosis. 3, The need to inject repeatedly doses of this enzyme can be originated by by the labile nature of collagenase which exhibits a complete activity loss after short periods of time. Herein, a novel strategy to manage this enzyme based on the synthesis of polymeric nanocapsules which contains collagenase housed within their matrix is presented. These nanocapsules have been engineered for achieving a gradual release of the encapsulated enzyme for longer times which can be up to ten days. The efficacy of these nanocapsules have been tested in murine model of local dermal fibrosis yielding higher fibrosis reduction in comparison with the injection of free enzyme which represent a significant improvement over conventional therapy.
description: 32 pages, 5 figures
Unifying Evolutionary and Network Dynamics
Creators: name: Swarup, Samarth
name: Gasser, Les
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Many important real-world networks manifest "small-world" properties such as scale-free degree distributions, small diameters, and clustering. The most common model of growth for these networks is "preferential attachment", where nodes acquire new links with probability proportional to the number of links they already have. We show that preferential attachment is a special case of the process of molecular evolution. We present a new single-parameter model of network growth that unifies varieties of preferential attachment with the quasispecies equation (which models molecular evolution), and also with the Erdos-Renyi random graph model. We suggest some properties of evolutionary models that might be applied to the study of networks. We also derive the form of the degree distribution resulting from our algorithm, and we show through simulations that the process also models aspects of network growth. The unification allows mathematical machinery developed for evolutionary dynamics to be applied in the study of network dynamics, and vice versa.
description: 11 pages, 12 figures, Accepted for publication in Physical Review E