cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Several Problems in Particle Physics and Cosmology Solved in One SMASH
Creators: name: Ballesteros, Guillermo
name: Redondo, Javier
name: Ringwald, Andreas
name: Tamarit, Carlos
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: neutrino: oscillation
neutrino: singlet
CP: violation
mass: induced
field theory: scalar
cosmological model
dark matter
inflation
spontaneous symmetry breaking
Goldstone particle
strong interaction
Peccei-Quinn
asymmetry
axion
U(1)

description: The Standard Model (SM) of particle physics is a big success. However, it lacks explanations for cosmic inflation,  the matter-anti-matter asymmetry of the Universe,  dark matter,  neutrino oscillations, and  the feebleness of CP violation in the strong interactions. The latter may be explained by a complex scalar field charged under a spontaneously broken global U(1) Peccei-Quinn (PQ) symmetry.Moreover, the pseudo Nambu-Goldstone boson of this breaking -the axion- may play the role of the dark matter. Furthermore, the modulus of the PQ field is a candidate for driving inflation. If additionally three extra SM  singlet neutrinos (whose mass is induced by the PQ field) are included, the five aforementioned problems can be addressed at once. We review the SM extension dubbed SMASH --for SM-Axion-Seesaw-Higgs portal inflation--,  discuss its predictions  and tests in astrophysics, cosmology, and laboratory experiments. Variants of SMASH are also considered and commented on.
In the Beginning there were n Agents: Founding and Amending a Constitution
Creators: name: Abramowitz, Ben
name: Shapiro, Ehud
name: Talmon, Nimrod
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Consider n agents forming an egalitarian, self-governed community. Their first task is to decide on a decision rule to make further decisions. We start from a rather general initial agreement on the decision-making process based upon a set of intuitive and self-evident axioms, as well as simplifying assumptions about the preferences of the agents. From these humble beginnings we derive a decision rule. Crucially, the decision rule also specifies how it can be changed, or amended, and thus acts as a de facto constitution. Our main contribution is in providing an example of an initial agreement that is simple and intuitive, and a constitution that logically follows from it. The naive agreement is on the basic process of decision making - that agents approve or disapprove proposals; that their vote determines either the acceptance or rejection of each proposal; and on the axioms, which are requirements regarding a constitution that engenders a self-updating decision making process.
What does it take to be a haptician? : how community can empower designers and expose the many ways of being an expert
Creators: name: Elbaggari, Hannah Rachel Yuen
Publisher: name: University of British Columbia
Year: 2022

description: Haptic design practices have grown from an engineering sub-field in the 90's to encompass areas of robotics, human-computer interaction, the creative arts, and more. Yet designing in the haptic medium remains complex and difficult to learn regardless of one’s training, in part because access to specific knowledge, skill, and tools is currently limited outside academia and certain industries. Within academia, there has been haptic design and knowledge sharing but these efforts are often accessible only to designers in the STEM-aligned, technical sphere. Technological feats have enabled the field of haptics to grow; we are hearing it discussed in our everyday devices, courses, and projects. With the barrier to entry in the field lowering, challenges of haptic design are also shifting. We explore the opportunity opening at this crux, one where we want to enable and empower hapticians to create and understand touch sensations by expanding the contexts of haptic design. We do so through a design justice framework and a feminist, participatory qualitative approach. Individuals remain experts in their own lived experiences, whether that be topical, experiential, or technical, but is there a way to embolden this specialized haptics knowledge for larger collaboration and knowledge sharing? We hypothesize that a suitably structured community resource could provide an empowering, inclusive, and reflexive design ecosystem for hapticians of diverse backgrounds. Our research took two parallel paths: understanding the perspectives of “peripheral” hapticians and designing an online resource for community building for haptic design (N=6). In our understanding path, we learned that underrepresented hapticians need support in their interest areas, specifically through a welcoming community space. Additionally, we described obstacles still faced in the field and presented eight social principles for haptic design. In our designing path, we applied our findings to create a haptic design resource (Haptics Commons) which we evaluated in a pilot study (N=6). We found that representing perspective hapticians as both practitioners (people with specialized skill) and explorers (people looking to learn) on a community platform gives promise to inclusivity and empowerment.
On the Kodaira dimension of Hurwitz spaces
Creators: name: Farkas, Gavril
name: Mullane, Scott
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We show that the canonical bundle of the Hurwitz stack classifying covers of genus g>1 and degree k>2 of the projective line is big. We show that all coarse moduli spaces of trigonal curves of genus g>1 are of general type.
description: 16 pages. Final version, to appear in a special issue of Mathematische Zeitschrift in honor of Olivier Debarre
Non-Local Thermodynamic Equilibrium Radiative Transfer Simulations of Sub-Chandrasekhar-Mass White Dwarf Detonations
Creators: name: Shen, Ken J.
name: Blondin, Stéphane
name: Kasen, Daniel
name: Dessart, Luc
name: Townsley, Dean M.
name: Boos, Samuel
name: Hillier, D. John
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Type Ia supernovae (SNe Ia) span a range of luminosities and timescales, from rapidly evolving subluminous to slowly evolving overluminous subtypes. Previous theoretical work has, for the most part, been unable to match the entire breadth of observed SNe Ia with one progenitor scenario. Here, for the first time, we apply non-local thermodynamic equilibrium radiative transfer calculations to a range of accurate explosion models of sub-Chandrasekhar-mass white dwarf detonations. The resulting photometry and spectra are in excellent agreement with the range of observed non-peculiar SNe Ia through 15 d after the time of B-band maximum, yielding one of the first examples of a quantitative match to the entire Phillips (1993) relation. The intermediate-mass element velocities inferred from theoretical spectra at maximum light for the more massive white dwarf explosions are higher than those of bright observed SNe Ia, but these and other discrepancies likely stem from the one-dimensional nature of our explosion models and will be improved upon by future non-local thermodynamic equilibrium radiation transport calculations of multi-dimensional sub-Chandrasekhar-mass white dwarf detonations.
description: Published in ApJL. This version corrects the previous version, which erroneously contained the R-band light curve of SN 1999dq in the I-band panels of Figures 2 and 6
Chiral and deconfinement phase transitions of two-flavour QCD at finite temperature and chemical potential
Creators: name: Fischer, Christian S.
name: Luecker, Jan
name: Mueller, Jens A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results for the chiral and deconfinement transition of two flavor QCD at finite temperature and chemical potential. To this end we study the quark condensate and its dual, the dressed Polyakov loop, with functional methods using a set of Dyson-Schwinger equations. The quark-propagator is determined self-consistently within a truncation scheme including temperature and in-medium effects of the gluon propagator. For the chiral transition we find a crossover turning into a first order transition at a critical endpoint at large quark chemical potential, $μ_{EP}/T_{EP} \approx 3$. For the deconfinement transition we find a pseudo-critical temperature above the chiral transition in the crossover region but coinciding transition temperatures close to the critical endpoint.
description: 4 pages, 4 figures. v2: minor changes, comments added
Transfer of Fully Convolutional Policy-Value Networks Between Games and Game Variants
Creators: name: Soemers, Dennis J. N. J.
name: Mella, Vegard
name: Piette, Eric
name: Stephenson, Matthew
name: Browne, Cameron
name: Teytaud, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we use fully convolutional architectures in AlphaZero-like self-play training setups to facilitate transfer between variants of board games as well as distinct games. We explore how to transfer trained parameters of these architectures based on shared semantics of channels in the state and action representations of the Ludii general game system. We use Ludii's large library of games and game variants for extensive transfer learning evaluations, in zero-shot transfer experiments as well as experiments with additional fine-tuning time.
The Superfluid Universe
Creators: name: Volovik, G. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss phenomenology of quantum vacuum. Phenomenology of macroscopic systems has three sources: thermodynamics, topology and symmetry. Thermodynamics of the self-sustained vacuum allows us to treat the problems related to the vacuum energy: the cosmological constant problems. The natural value of the energy density of the equilibrium the self-sustained vacuum is zero. Cosmology is discussed as the process of relaxation of vacuum towards the equilibrium state. The present value of the cosmological constant is very small compared to the Planck scale, because the present Universe is very old and thus is close to equilibrium. Momentum space topology determines the universality classes of fermionic vacua. The Standard Model vacuum both in its massless and massive states is topological medium. The vacuum in its massless state shares the properties of superfluid 3He-A, which is topological superfluid. It belongs to the Fermi-point universality class, which has topologically protected fermionic quasiparticles. At low energy they behave as relativistic massless Weyl fermions. Gauge fields and gravity emerge together with Weyl fermions at low energy. This allows us to treat the hierarchy problem in Standard Model: the masses of elementary particles are very small compared to the Planck scale because the natural value of the quark and lepton masses is zero. The small nonzero masses appear in the infrared region, where the quantum vacuum acquires the properties of another topological superfluid, 3He-B, and 3+1 topological insulators. The other topological media in dimensions 2+1 and 3+1 are also discussed. In most cases, topology is supported by discrete symmetry of the underlying microscopic system, which indicates the important role of discrete symmetry in Standard Model.
description: 51 pages, 13 figures, prepared as Chapter XI of the book "Novel Superfluids", K. H. Bennemann and J. B. Ketterson editors
Democratic Forking: Choosing Sides with Social Choice
Creators: name: Abramowitz, Ben
name: Elkind, Edith
name: Grossi, Davide
name: Shapiro, Ehud
name: Talmon, Nimrod
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Any community in which membership is optional may eventually break apart, or fork. For example, forks may occur in political parties, business partnerships, social groups, cryptocurrencies, and federated governing bodies. Forking is typically the product of informal social processes or the organized action of an aggrieved minority, and it is not always amicable. Forks usually come at a cost, and can be seen as consequences of collective decisions that destabilize the community. Here, we provide a social choice setting in which agents can report preferences not only over a set of alternatives, but also over the possible forks that may occur in the face of disagreement. We study this social choice setting, concentrating on stability issues and concerns of strategic agent behavior.
Shapes of a filament on the surface of a bubble
Creators: name: Prasath, S Ganga
name: Marthelot, Joel
name: Govindarajan, Rama
name: Menon, Narayanan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The shape assumed by a slender elastic structure is a function both of the geometry of the space in which it exists and the forces it experiences. We explore by experiments and theoretical analysis, the morphological phase-space of a filament confined to the surface of a spherical bubble. The morphology is controlled by varying bending stiffness and weight of the filament, and its length relative to the bubble radius. When the dominant considerations are geometry of confinement and elastic energy, the filament lies along a geodesic and when gravitational energy becomes significant, a bifurcation occurs, with a part of the filament occupying a longitude and the rest along a curve approximated by a latitude. Far beyond the transition, when the filament is much longer than the diameter, it coils around the selected latitudinal region. A simple model with filament shape as a composite of two arcs captures the transition well and for better quantitative agreement with the subcritical nature of bifurcation, we study the morphology by numerical energy minimization. Our analysis of filament's morphological space spanned by a geometric parameter, and one that compares elastic energy with body forces, may provide guidance for packing slender structures on complex surfaces.
Prospects for X(3872) Detection at Panda
Creators: name: Lange, Jens Sören
name: Galuska, Martin
name: Geßler, Thomas
name: Kühn, Wolfgang
name: Künze, Stephanie
name: Liang, Yutie
name: Münchow, David
name: Spruck, Björn
name: Ullrich, Matthias
name: Werner, Marcel
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Monte-Carlo simulations for a resonance scan of the charmonium-like state X(3872) at Panda are performed. Final state radiation hadronic background reactions are taken into account. The signal reconstruction uses a realistic pattern recognition (track finder and track fitter) and electron/pion discrimination.
description: Conference Talk presented at MENU10, 12th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, 05/31-06/04, 2010, College of William and Mary, Williamsburg, Virginia
Lectures on nonlinear sigma-models in projective superspace
Creators: name: Kuzenko, Sergei M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: N = 2 supersymmetry in four space-time dimensions is intimately related to hyperkahler and quaternionic Kahler geometries. On one hand, the target spaces for rigid supersymmetric sigma-models are necessarily hyperkahler manifolds. On the other hand, when coupled to N = 2 supergravity, the sigma-model target spaces must be quaternionic Kahler. It is known that such manifolds of restricted holonomy are difficult to generate explicitly. Projective superspace is a field-theoretic approach to constructing general N = 2 supersymmetric nonlinear sigma-models, and hence to generate new hyperkahler and quaternionic Kahler metrics. Intended for a mixed audience consisting of both physicists and mathematicians, these lectures provide a pedagogical introduction to the projective-superspace approach.
description: 56 pages. Lectures given at the 30th Winter School Geometry and Physics, Srni, Czech Republic, 16--23 January, 2010. V2: typos corrected, comments added; V3: almost published version (quotation from Osip Mandelstam was removed by J. Phys. A from published article)
M-M.E.S.S.-2.0 The "Matrix Equations, Sparse Solvers"-toolbox for MATLAB® and GNU Octave
Creators: name: Saak, Jens
Publisher: name: Zenodo
Year: 2019
Subjects: algebraic Lyapunov equation
algebraic Riccati equation
autonomous differential Riccati equation
non-autonomous differential Riccati equation
backward differentiation formulae
Rosenbrock scheme
splitting scheme
alternating directions implicit
Newton-Kleinman iteration

description: The Poster describes the core philosophy and features of the M-M.E.S.S.-2.0 toolbox for the solution of large-scale symmetric matrix equations, with some sample applications in model order reduction of complex dynamical systems.
Effect of the pion field on the distributions of pressure and shear in the proton
Creators: name: Owa, Shiryo
name: Thomas, A. W.
name: Wang, X. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In light of recent experimental progress in determining the pressure and shear distributions in the proton, these quantities are calculated in a model with confined quarks supplemented by the pion field required by chiral symmetry. The incorporation of the pion contributions is shown to account for the long-range distributions, in general agreement with the experimentally extracted quark contributions. The results of the model are also compared with lattice QCD results at unphysically large quark mass.
description: 5 pages, 4 figures
Application of Benefits / Costs Analysis to the Subsidization of Transport Operations with Speical Reference to Air Carriers
Creators: name: Studnicki-Gizbert, Konrad W.
name: Studnicki-Gizbert, Konrad W.
Publisher: name: Unknown
Year: 1968
Subjects: Public Economics

description: Presented at the 9th Transportation Research Forum meeting, Sept. 4-6, 1968, Kansas City, MO
On tensor decompositions, maximum likelihood estimation, and causal inference
Creators: name: Semnani, Pardis
Publisher: name: University of British Columbia
Year: 2022

description: In this thesis, we study three problems, each of which concerns inferring certain pieces of information from some observed data. We apply tools arising from algebraic geometry, statistics, and combinatorics to approach these problems. In Chapter 2, we consider data that can be recorded in the form of a tensor admitting a special type of decomposition called an orthogonal tensor-train decomposition. Finding equations defining varieties of low-rank tensors is generally a hard problem, however, the set of orthogonally-decomposable tensors is defined by appealing quadratic equations. The tensors we consider are an extension of orthogonally-decomposable tensors. We show that they are defined by similar quadratic equations, as well as linear equations and a higher-degree equation. In Chapter 3, we study the problem of maximum likelihood estimation of log-concave densities that lie in the graphical model of a given undirected graph G, and factorize according to this graph with log-concave factors. We show that the maximum likelihood estimate (MLE) is the product of the exponentials of several tent functions, one for each maximal clique of G. While the family of densities in question is infinite-dimensional, our results imply the MLE can be found by solving a finite-dimensional convex optimization problem. We provide an implementation. Furthermore, when G is chordal, we prove that the MLE exists and is unique with probability 1 as long as the number of sample points is larger than the size of the largest clique of G. Finally, we discuss the conditions under which a log-concave density in the graphical model of G has a log-concave factorization according to G. In Chapter 4, we study the problem of inferring causality from an observed i.i.d. sample arising from a distribution faithful to a directed graph G which can possibly have directed cycles. In particular, our goal is to recover the Markov equivalence class of G. We propose an algorithm, and conjecture that it is consistent, i.e., if the set of conditional independence relations satisfied by the distribution is precisely inferred from the observed data, then the output of the algorithm is Markov equivalent to G.
Crossover from adiabatic to antiadiabatic quantum pumping with dissipation
Creators: name: Pellegrini, Franco
name: Negri, Carlotta
name: Pistolesi, Fabio
name: Manini, Nicola
name: Santoro, Giuseppe E.
name: Tosatti, Erio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Quantum pumping, in its different forms, is attracting attention from different fields, from fundamental quantum mechanics, to nanotechnology, to superconductivity. We investigate the crossover of quantum pumping from the adiabatic to the anti-adiabatic regime in the presence of dissipation, and find general and explicit analytical expressions for the pumped current in a minimal model describing a system with the topology of a ring forced by a periodic modulation of frequency omega. The solution allows following in a transparent way the evolution of pumped DC current from much smaller to much larger omega values than the other relevant energy scale, the energy splitting introduced by the modulation. We find and characterize a temperature-dependent optimal value of the frequency for which the pumped current is maximal.
description: 5 pages, 3 figures
Relativistic Dynamical Stability Criterion of Multi-Planet Systems with a Distant Companion
Creators: name: Wei, Lingfeng
name: Naoz, Smadar
name: Faridani, Thea
name: Farr, Will M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Multi-planetary systems are prevalent in our Galaxy. The long-term stability of such systems may be disrupted if a distant inclined companion excites the eccentricity and inclination of the inner planets via the eccentric Kozai-Lidov mechanism. However, the star-planet and the planet-planet interactions can help stabilize the system. In this work, we extend the previous stability criterion that only considered the companion-planet and planet-planet interactions by also accounting for short-range forces or effects, specifically, relativistic precession induced by the host star. A general analytical stability criterion is developed for planetary systems with $N$ inner planets and a relatively distant inclined perturber by comparing precession rates of relevant dynamical effects. Furthermore, we demonstrate as examples that in systems with $2$ and $3$ inner planets, the analytical criterion is consistent with numerical simulations using a combination of Gauss's averaging method and direct N-body integration. Finally, the criterion is applied to observed systems, constraining the orbital parameter space of a possible undiscovered companion. This new stability criterion extends the parameter space in which an inclined companion of multi-planet systems can inhabit.
description: 16 pages, 10 figures, 3 tables, accepted by the Astrophysical Journal
Symmetries, Safety, and Self-Supervision
Creators: name: Dillon, Barry M.
name: Kasieczka, Gregor
name: Olischlager, Hans
name: Plehn, Tilman
name: Sorrenson, Peter
name: Vogel, Lorenz
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Collider searches face the challenge of defining a representation of high-dimensional data such that physical symmetries are manifest, the discriminating features are retained, and the choice of representation is new-physics agnostic. We introduce JetCLR to solve the mapping from low-level data to optimized observables though self-supervised contrastive learning. As an example, we construct a data representation for top and QCD jets using a permutation-invariant transformer-encoder network and visualize its symmetry properties. We compare the JetCLR representation with alternative representations using linear classifier tests and find it to work quite well.
Model Order Reduction for Structured Second Order DAE Systems
Creators: name: Ahmad, Mian Iljas
name: Saak, Jens
name: Uddin, M. Monir
name: Voigt, Matthias
Publisher: name: Zenodo
Year: 2014
Subjects: Model Order Reduction
Balanced Truncation
Differential Algebraic System
Constrained Mechanical System

description: We present implicit index-reduction based model reduction for constrained mechanical systems.
description: Presented at Tegernsee Workshop 2014
Triage of urology service to cope with COVID-19 pandemic: A single institution study
Creators: name: Waqar, Muhammad
name: Ong, Kelly
name: Moubasher, Amr
name: Rehman, Omer Farooq
name: Bhopal, Kamran Faisal
name: Makanjuola, Jonathan
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: COVID-19
bladder cancer
kidney cancer
testicular cancer

description: Almost a year ago, no one has ever heard of COVID-19 but now, every individual in the world is familiar with this term. It is far from over and yet, it has affected every aspect of human life. The Department of Urology at King’s College Hospital London provides all types of urology care ranging from benign to cancer treatments to the community. However, this service was badly affected by COVID-19. Policies were made by the experts in the field to reduce patient traffic in the hospital and at the same time, attempting to ensure appropriate and timely treatment was provided to patients suffering from urological conditions requiring urgent attention. In this article, we discuss the triage guidelines set up at our centre. Treatments for benign conditions such as kidney stones were delayed for 3-6 months. For the first time, telephone and video clinics were setup to follow-up patients with benign conditions. Urological emergencies such as acute urinary retention and priapism were discharged from accidental and emergency department after treatment. Small T1 renal cancers were put on surveillance, whereas T2 and T3 renal cancers were offered nephrectomy at a COVID-free specialized center. Transurethral removal of bladder tumor was offered only for solid or actively bleeding tumor. High risk prostate cancer patients were started on hormonal therapy and radiotherapy was only offered for spinal cord compression secondary to metastasis. Low and intermediate non-metastatic prostate cancers were placed on active surveillance. Patients with testicular tumor continued to have immediate inguinal orchidectomy. The multi-disciplinary meetings were done remotely using blue jeans software®. These steps not only strive to provide adequate and timely urology care to patients but also protect health care workers and prevent the spread of COVID-19.
description: EXCLI Journal; 20:Doc46; ISSN 1611-2156
Improving the quality of critical tractor parts through the dynamic stabilisation of the manufacturing process in regard to CNC machines
Creators: name: Olt, Jüri
name: Maksarov, V.
name: Efimov, A.
Publisher: name: Agronomy Research
Year: 2019
Subjects: production process
local laser impact
metastable structure
machining process system
chip formation
auto-oscillation processes
surface roughness
article

description: This article focuses on the evaluation of a rod improvement which is considered in detail below. The rod in question is part of an hydraulic cylinder manufacturing process which takes place on CNC machines. The need for ensuring a process improvement in this area arose because the rod often breaks down under operational conditions. It was found that the cause of this is a finishing operation in the existing production process. The effect of charging which occurred during the grinding process brings about the embedding of abrasive particles into the workpiece surface layer. Therefore, at the running-in stage, the mating surfaces on the rod and the system being used to seal the rings both experience intense wear in their contact areas, with this being caused by abrasive microparticles which serves to reduce the performance characteristics of the part in question. However, even if we dispense with the grinding process, ensuring the necessary roughness of Ra = 0.63 μm at the machining stage alone will present problems of their own for a number of reasons. First and foremost is the connection with the phenomenon that results in an autooscillation processes which is generated by the manufacturing system, as well as the formation of flow chips during machining on CNC machines. In this regard, in order to avoid any negative factors creeping into the process, we propose that a new approach be taken in achieving the necessary surface roughness, one which is based on the suppression of the auto-oscillation process during machining by means of creating a selective metastable structure. At the machining stage, any inhomogeneous structure in the local chip formation area will be destroyed, thereby suppressing the auto-oscillation process and reducing the surface roughness. Eventually, the proposed method will allows the grinding operation to be dispensed with entirely from the manufacturing process.
Protention and retention in biological systems
Creators: name: Longo, Giuseppe
name: Montévil, Maël
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences

description: This paper proposes an abstract mathematical frame for describing some features of cognitive and biological time. We focus here on the so called "extended present" as a result of protentional and retentional activities (memory and anticipation). Memory, as retention, is treated in some physical theories (relaxation phenomena, which will inspire our approach), while protention (or anticipation) seems outside the scope of physics. We then suggest a simple functional representation of biological protention. This allows us to introduce the abstract notion of "biological inertia".
description: This paper was made possible only as part of an extended collaboration with Francis Bailly (see references), a dear friend and "ma\^itre \'a penser", who contributed to the key ideas. Francis passed away in february 2008: we continue here our inspiring discussions and joint work
Analysis of plant materials pre-treated by steam explosion technology for their usability as insulating materials
Creators: name: Schnabel, T.
name: Huber, H.
name: Petutschnigg, A.
name: Jäger, A.
Publisher: name: Agronomy Research
Year: 2019
Subjects: thermal-hydro treatment
thermal conductivity
maize straw
miscanthus
article

description: Raw materials of annual plants fibres are not easily usable for industrial production applications. Pre-treatment of the annual plant fibres is necessary to increase the homogeneity of the material and to improve the material properties. This study deals with the influence of steam explosion treatment on the quality of annual plant fibres used as insulating material. Maize and wheat straw were selected for production of insulating panels. To clarify the changes within the structure of the plants due to the pre-treatment process material analysis was carried out using FT-IR spectroscopy and raster electron microscope. Furthermore, the bulk density and the thermal conductivity were analysed as important values for insulating materials. The results showed that the pre-treatment process homogenizes the materials and the processes could be used for the production of bulk insulation.
RIPTIDE: a novel recoil-proton track imaging detector for fast neutrons
Creators: name: Musumarra, Agatino
name: Leone, Franco
name: Massimi, Cristian
name: Pellegriti, Maria Grazia
name: Romano, Francesco
name: Spighi, Roberto
name: Villa, Mauro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Neutron detectors are an essential tool for the development of many research fields, as nuclear, particle and astroparticle physics as well as radiotherapy and radiation safety. Since neutrons cannot directly ionize, their detection is only possible via nuclear reactions. Consequently, neutron-based experimental techniques are related to the detection of charged particle or electromagnetic radiation originating from neutron-induced reactions. The study of fast neutrons is often based on the neutron-proton elastic scattering reaction. In this case, the ionization induced by the recoil protons in a hydrogenous material constitutes the basic information for the design and development of neutron detectors. Although experimental techniques have continuously improved and refined, so far, proton-recoil track imaging is still weak in laboratory rate environments because of the extremely small detection efficiency. To address this deficiency, we propose a novel recoil-proton track imaging system in which the light deriving from a fast scintillation signal is used to perform a complete reconstruction in space and time of the event. In particular, we report the idea of RIPTIDE (RecoIl Proton Track Imaging DEtector): an innovative system which combines a plastic scintillator coupled to imaging devices, based on CMOS technology, or Micro Channel Plate sensors. The proposed apparatus aims at providing neutron spectrometry capability by stereoscopically imaging the recoil-protons tracks, correlating the spatial information with the time information.
The pointwise behavior of Riemann's function
Creators: name: Broucke, Frederik
name: Vindas, Jasson
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 26A16, 26A27, 11F30, 11J70, 42A16, 42A55

description: We present a new and simple method for the determination of the pointwise Hölder exponent of Riemann's function $\sum_{n=1}^{\infty} n^{-2}\sin(πn^{2} x)$ at every point of the real line. In contrast to earlier approaches, where wavelet analysis and the theta modular group were needed for the analysis of irrational points, our method is direct and elementary, being only based on the following tools from number theory and complex analysis: the evaluation of quadratic Gauss sums, the Poisson summation formula, and Cauchy's theorem.
description: 14 pages. An appendix on fractional integrals of modular forms was added
Additional file 1: of Integrative omics analyses broaden treatment targets in human cancer
Creators: name: Sengupta, Sohini
name: Sun, Sam
name: Huang, Kuan-lin
name: Oh, Clara
name: Bailey, Matthew
name: Varghese, Rajees
name: Wyczalkowski, Matthew
name: Ning, Jie
name: Tripathi, Piyush
name: McMichael, Joshua
name: Johnson, Kimberly
name: Kandoth, Cyriac
name: Welch, John
name: Ma, Cynthia
name: Wendl, Michael
name: Payne, Samuel
name: FenyĂś, David
name: Townsend, Reid
name: Dipersio, John
name: Chen, Feng
name: Ding, Li
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Supplementary Materials and Methods. (PDF 33 kb)
Constraint programming models for real-world examination scheduling
Creators: name: Hamilton, Stephanie
Publisher: name: University of British Columbia
Year: 2022

description: Educational timetabling consists of various scheduling problems, one of which is the examination scheduling problem. This problem requires assigning exams to rooms and timeslots in such a way that no students are required to write two exams at one time. In addition, other restrictions can be imposed so as to improve the quality of the schedule for the participants (i.e., students and faculty). We introduce a new general formulation of a student hardship, which, when minimized, constrains the maximum number of exams students write within a specified length of time. This definition of hardship is incorporated into a two-phase constraint programming model which has a timeslot assignment phase and a room assignment phase. Within the timeslot assignment model, a set of cuts are added to the model to assist in generating solutions that will lead to feasible room assignments by restricting the sizes of exams scheduled in a timeslot. The set of cuts is shown to be a necessary condition for a timeslot assignment solution to have a corresponding room assignment such that the exams can be assigned rooms based on size. If rooms are limited to only hosting one exam in a timeslot, then this set of cuts is shown to be sufficient. The room assignment model then uses such a solution to generate a complete exam schedule. We also provide a unified approach which combines the timeslot and room assignment models. The combined model ensures that a feasible solution is generated, but at a cost of the size and performance. The models presented in this thesis were used to generate the exam schedules for the University of British Columbia’s Okanagan campus in the 2021/2022 academic year. The optimized schedules were well received and exhibited historically low numbers of student hardships. We use these datasets in the experiments of this thesis, as well as international benchmark datasets, to illustrate the effectiveness of the cuts approach versus the unified approach and to position this model in the context of the work done by other researchers in this field.
Approximate symmetries and quantum error correction
Creators: name: Liu, Zi-Wen
name: Zhou, Sisi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum error correction (QEC) is a key concept in quantum computation as well as many areas of physics. There are fundamental tensions between continuous symmetries and QEC. One vital situation is unfolded by the Eastin--Knill theorem, which forbids the existence of QEC codes that admit transversal continuous symmetry actions (transformations). Here, we systematically study the competition between continuous symmetries and QEC in a quantitative manner. We first define a series of meaningful measures of approximate symmetries motivated from different perspectives, and then establish a series of trade-off bounds between them and QEC accuracy utilizing multiple different methods. Remarkably, the results allow us to derive general quantitative limitations of transversally implementable logical gates, an important topic in fault-tolerant quantum computation. As concrete examples, we showcase two explicit types of quantum codes, obtained from quantum Reed--Muller codes and thermodynamic codes, respectively, that nearly saturate our bounds. Finally, we discuss several potential applications of our results in physics.
description: 19 pages, 2 figures, published version, concise version of arXiv:2111.06360
ByzRev 03.2021.001: Dimiter Angelov, The Byzantine Hellene: The Life of Emperor Theodore Laskaris and Byzantium in the Thirteenth Century.
Creators: name: Katsoni, Polymnia
Publisher: name: The Byzantine Review
Year: 2021

description: Dimiter Angelov, The Byzantine Hellene: The Life of Emperor Theodore Laskaris and Byzantium in the Thirteenth Century. Cambridge: Cambridge University Press 2019. 460 pp. – ISBN: 978-1-108-48071-0 (€40,30)
description: The Byzantine Review, Bd. 3 (2021)
Resonating color state and emergent chromodynamics in the kagome antiferromagnet
Creators: name: Cepas, O.
name: Ralko, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We argue that the spin-wave breakdown in the Heisenberg kagome antiferromagnet signals an instability of the ground state and leads, through an emergent local constraint, to a quantum dynamics described by a gauge theory similar to that of chromodynamics. For integer spins, we show that the quantum fluctuations of the gauge modes select the sqrt(3)xsqrt(3) Neel state with an on-site moment renormalized by color resonances. We find non-magnetic low-energy excitations that may be responsible for a deconfinement "transition" at experimentally accessible temperatures which we estimate.
description: 4 pages, 4 figures, v2: printable figs, v3: publ. version
Approximate Modeling of Spherical Membrane
Creators: name: Koskinen, Pekka
name: Kit, Oleg O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spherical symmetry is ubiquitous in nature. It's therefore unfortunate that spherical system simulations are so hard, and require complete spheres with millions of interacting particles. Here we introduce an approach to model spherical systems, using revised periodic boundary conditions adapted to spherical symmetry. Method reduces computational costs by orders of magnitude, and is applicable for both solid and liquid membranes, provided the curvature is sufficiently small. We demonstrate the method by calculating the bending and Gaussian curvature moduli of single- and multi-layer graphene. Method works with any interaction (ab initio, classical interactions), with any approach (molecular dynamics, Monte Carlo), and with applications ranging from science to engineering, from liquid to solid membranes, from bubbles to balloons.
description: 4 pages, 2 figures, 1 table
A consistent test of independence based on a sign covariance related to Kendall's tau
Creators: name: Bergsma, Wicher
name: Dassios, Angelos
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The most popular ways to test for independence of two ordinal random variables are by means of Kendall's tau and Spearman's rho. However, such tests are not consistent, only having power for alternatives with ``monotonic'' association. In this paper, we introduce a natural extension of Kendall's tau, called $τ^*$, which is non-negative and zero if and only if independence holds, thus leading to a consistent independence test. Furthermore, normalization gives a rank correlation which can be used as a measure of dependence, taking values between zero and one. A comparison with alternative measures of dependence for ordinal random variables is given, and it is shown that, in a well-defined sense, $τ^*$ is the simplest, similarly to Kendall's tau being the simplest of ordinal measures of monotone association. Simulation studies show our test compares well with the alternatives in terms of average $p$-values.
description: Published in at http://dx.doi.org/10.3150/13-BEJ514 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
The smash product for derived categories in stable homotopy theory
Creators: name: Mandell, Michael A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P43, 18D10, 18D50

description: An E_1 (or A-infinity) ring spectrum R has a derived category of modules D_R. An E_2 structure on R endows D_R with a monoidal product. An E_3 structure on R endows the monoidal product with a braiding. If the E_3 structure extends to an E_4 structure then the braided monoidal product is symmetric monoidal.
description: Minor corrections
Additional file 3: of Integrative omics analyses broaden treatment targets in human cancer
Creators: name: Sengupta, Sohini
name: Sun, Sam
name: Huang, Kuan-lin
name: Oh, Clara
name: Bailey, Matthew
name: Varghese, Rajees
name: Wyczalkowski, Matthew
name: Ning, Jie
name: Tripathi, Piyush
name: McMichael, Joshua
name: Johnson, Kimberly
name: Kandoth, Cyriac
name: Welch, John
name: Ma, Cynthia
name: Wendl, Michael
name: Payne, Samuel
name: FenyĂś, David
name: Townsend, Reid
name: Dipersio, John
name: Chen, Feng
name: Ding, Li
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Figure S1. Fusions in the TCGA cohort. Figure S2. Druggable protein expression outliers using mass spectrometry. Figure S3. Co-occurring druggable mutations represent opportunities for combinational and alternative therapy. Figure S4. Druggability and Demographics. Figure S5. Potential Druggability by Cancer Type. (PDF 514Â KB) (PDF 501 kb)
SERVICE QUALITY AND CUSTOMER SATISFACTION FOR BANKING SYSTEM.pdf
Creators: name: HARALAYYA, BHADRAPPA
Publisher: name: figshare
Year: 2023
Subjects: Banking, finance and securities law
Marketing management (incl. strategy and customer relations)

description: The paper deals the service quality and customer satisfaction about the Indian banking system and data analysis we used the ANOVA for testing of hypothesis. Finally we illustrate the data are fit or not with verification on market strategy. It is more helpful for young researchers.
Non-Markovian behavior of small and large complex quantum systems
Creators: name: Znidaric, Marko
name: Pineda, Carlos
name: Garcia-Mata, Ignacio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The channel induced by a complex system interacting strongly with a qubit is calculated exactly under the assumption of randomness of its eigenvectors. The resulting channel is represented as an isotropic time dependent oscillation of the Bloch ball, leading to non-Markovian behavior, even in the limit of infinite environments. Two contributions are identified: one due to the density of states and the other due to correlations in the spectrum. Prototype examples, one for chaotic and the other for regular dynamics are explored.
description: 7 pages, 4 figures. Version 2 is closer to what was published. In particular, a typo in Eq. (8) and in Wg([2^2]) at ref 11 were fixed. Other very minor corrections were done as well