cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CLIP-It! Language-Guided Video Summarization
Creators: name: Narasimhan, Medhini
name: Rohrbach, Anna
name: Darrell, Trevor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: A generic video summary is an abridged version of a video that conveys the whole story and features the most important scenes. Yet the importance of scenes in a video is often subjective, and users should have the option of customizing the summary by using natural language to specify what is important to them. Further, existing models for fully automatic generic summarization have not exploited available language models, which can serve as an effective prior for saliency. This work introduces CLIP-It, a single framework for addressing both generic and query-focused video summarization, typically approached separately in the literature. We propose a language-guided multimodal transformer that learns to score frames in a video based on their importance relative to one another and their correlation with a user-defined query (for query-focused summarization) or an automatically generated dense video caption (for generic video summarization). Our model can be extended to the unsupervised setting by training without ground-truth supervision. We outperform baselines and prior work by a significant margin on both standard video summarization datasets (TVSum and SumMe) and a query-focused video summarization dataset (QFVS). Particularly, we achieve large improvements in the transfer setting, attesting to our method's strong generalization capabilities.
description: Neurips 2021. Website at https://medhini.github.io/clip_it/
เทคโนโลยีชีวโมเลกุลเพื่อการปรับปรุงพันธุ์มันสำปะหลัง
Creators: name: จรัญญา ณรงคะชวนะ
Publisher: name: Genetics Society of Thailand
Year: 2010
Subjects: เทคโนโลยีชีวโมเลกุล, การปรับปรุงพันธุ์, มันสำปะหลัง

description: 2, 3, Thai Journal of Genetics
Likelihood ratios in asymptotic statistical theory
Creators: name: Leroux, Brian Gilbert
Publisher: name: University of British Columbia
Year: 2010

description: This thesis deals with two topics in asymptotic statistics. A concept of asymptotic optimality for sequential tests of statistical hypotheses is introduced. Sequential Probability Ratio Tests are shown to have asymptotic optimality properties corresponding to their usual optimality properties. Secondly, the asymptotic power of Pearson's chi-square test for goodness of fit is derived in a new way. The main tool for evaluating asymptotic performance of tests is the likelihood ratio of two hypotheses. In situations examined here the likelihood ratio based on a sample of size ⁿ has a limiting distribution as ⁿ → ∞ and the limit is also a likelihood ratio. To calculate limiting values of various performance criteria of statistical tests the calculations can be made using the limiting likelihood ratio.
The Information Bottleneck: A Unified Information Theoretic View
Creators: name: Zaidi, A.
name: Auguerri, I. E.
name: Caire, G.
name: Simeone, O.
name: Park, S-H
name: Shamai, S.
Publisher: name: Zenodo
Year: 2020

description: 2020 Workshop on Machine Learning for Communication (MLCOM-2020)
 Israel, September 7/8, 2020
An Interferometry-Free Protocol for Demonstrating Topological Order
Creators: name: Bombin, H.
name: Martin-Delgado, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a protocol to demonstrate the topological order of a spin-1/2 lattice model with four-body interactions. Unlike other proposals, it does not rely on the controlled movement of quasiparticles, thus eliminating the addressing, decoherence and dynamical phase problems related to them. Rather, the protocol profits from the degeneracy of the ground state. It involves the addition of Zeeman terms to the original Hamiltonian that are used to create holes and move them around in the system.
description: revtex4, 6 color figures
Welcome to the New Taylorism! Teacher Education Meets Itinerant Curriculum Theory
Creators: name: Price, Todd Alan
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2017

description: The scholarly, discursive work of João Paraskeva goes deep into theory and broad into curriculum study, so broad that in fact it becomes necessary to anchor to shore his sweeping articulation of “Itinerant Curriculum Theory (ICT)” to make meaning. Allowing “progressive curriculum scholars” the chance to come out from the “critical curriculum river” where they have long traveled, Paraskeva’s (2011) germinal volume, Conflicts in Curriculum Theory, attempts a radical departure, and most assuredly sets forth a political agenda. Taken at face value, Paraskeva brazenly advances the idea to decanonize and deterritorialize the curriculum studies field as a whole. My purpose and political agenda is to advance Paraskeva’s work through this book review, and in the effort, make ICT more accessible and perhaps even plausible, by specifically calling for curricularists to unbridle curriculum study from teacher education institutions.

Todd Alan Price is Director of Policy Studies and Chair of Educational Foundations and Inquiry in the National College of Education, National Louis University. He has authored and co-authored several books, chapters, and articles concerning curriculum study, teacher education, educational policy, technology in education, service learning pedagogy and civic engagement curriculum. He is a contributing member to the American Association for the Advancement of Curriculum Studies (AAACS), working in 2015-16 as nominations chair and currently as the conference program chair, 2018-20. Price is a steady and enthusiastic contributor to the Internationalization of Curriculum Studies Taskforce. He has lectured internationally in Northern Cyprus (2016), Adana, Turkey (2015-16); Ottawa, Canada (2015); Braga, Portugal (2013); Rio de Janeiro, Brazil (2012); Hanzhou, P.R.C. (2014), Beijing, P.R.C. (2006, 10), Shanghai, P.R.C. (2005, 06), Chifeng, P.R.C. (2010), and Qingdao, P.R.C. (2010), Hanoi, Vietnam (2010); Oxford, Great Britain (2006, 10); Tutzing, Germany (2003); and Miramar/Havana, Cuba (2003).
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 1 (2017)
First-order formalism for thick branes in $f(T,\mathcal{T})$ gravity
Creators: name: Moreira, A. R. P.
name: Lima, F. C. E.
name: Silva, J. E. G.
name: Almeida, C. A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study the thick brane scenario constructed in the recently proposed $f(T,\mathcal{T})$ theories of gravity, where $T$ is called the torsion scalar, and $\mathcal{T}$ is the trace of the energy-momentum tensor. We use the first-order formalism to find analytical solutions for models that include a scalar field as a source. In particular, we describe two interesting cases in which, in the first, we obtain a double-kink solution, which generates a splitting in the brane. In the second case, proper management of a kink solution obtained generates a splitting in the brane intensified by the torsion parameter, evinced by the energy density components satisfying the weak and strong energy conditions. In addition, we investigate the behavior of the gravitational perturbations in this scenario. The parameters that control the torsion and the trace of the energy-momentum tensor tend to shift the massive modes to the core of the brane, keeping a gapless non-localizable and stable tower of massive modes and producing more localized massless modes.
description: 31 pages, 49 figures. Revised version to match published version in EPJC
Electrostatics in Periodic Boundary Conditions and Real-space Corrections
Creators: name: Dabo, Ismaila
name: Kozinsky, Boris
name: Singh-Miller, Nicholas E.
name: Marzari, Nicola
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We address periodic-image errors arising from the use of periodic boundary conditions to describe systems that do not exhibit full three-dimensional periodicity. The difference between the periodic potential, as straightforwardly obtained from a Fourier transform, and the potential satisfying any other boundary conditions can be characterized analytically. In light of this observation, we present an efficient real-space method to correct periodic-image errors, based on a multigrid solver for the potential difference, and demonstrate that exponential convergence of the energy with respect to cell size can be achieved in practical calculations. Additionally, we derive rapidly convergent expansions for determining the Madelung constants of point-charge assemblies in one, two, and three dimensions.
Positive disclination in a thin elastic sheet with boundary
Creators: name: Pandey, Animesh
name: Singh, Manish
name: Gupta, Anurag
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: An isolated positive wedge disclination deforms an initially flat elastic sheet into a perfect cone when the sheet is of infinite extent and is elastically inextensible. The latter requires the elastic stretching strains to be vanishingly small. In this paper, rigorous analytical and numerical results are obtained for the disclination induced deformed shape and stress field of a bounded F{ö}ppl-von K{á}rm{á}n elastic sheet with finite extensibility, while emphasising the deviations from the perfect cone solution. In particular, the Gaussian curvature field is no longer localised as a Dirac singularity at the defect location whenever elastic extensibility is allowed and is necessarily negative in large regions away from the defect. The stress field, similarly, has no Dirac singularity in the presence of elastic extensibility. However, with increasing Young's modulus of the sheet, while keeping the bending modulus and the domain size fixed, both of these fields tend to develop a Dirac singularity. Noticeably, in this limiting behaviour, inextensibility eludes the bounded elastic sheet due to persisting regions of non-trivial Gaussian curvature away from the defect. Other results in the paper include studying the effect of specific boundary conditions (free, simply supported, or partially clamped) on the Gaussian curvature field away from the defect and on the buckling transition from the flat to a conical solution.
Simulations of ionospheric refraction on radio interferometric data
Creators: name: Chege, J. Kariuki
name: Jordan, C. H.
name: Lynch, C.
name: Line, J. L. B.
name: Trott, C. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Epoch of Reionisation (EoR) is the period within which the neutral universe transitioned to an ionised one. This period remains unobserved using low-frequency radio interferometers which target the 21 cm signal of neutral hydrogen emitted in this era. The Murchison Widefield Array (MWA) radio telescope was built with the detection of this signal as one of its major science goals. One of the most significant challenges towards a successful detection is that of calibration, especially in the presence of the Earth's ionosphere. By introducing refractive source shifts, distorting source shapes and scintillating flux densities, the ionosphere is a major nuisance in low-frequency radio astronomy. We introduce SIVIO, a software tool developed for simulating observations of the MWA through different ionospheric conditions estimated using thin screen approximation models and propagated into the visibilities. This enables us to directly assess the impact of the ionosphere on observed EoR data and the resulting power spectra. We show that the simulated data captures the dispersive behaviour of ionospheric effects. We show that the spatial structure of the simulated ionospheric media is accurately reconstructed either from the resultant source positional offsets or from parameters evaluated during the data calibration procedure. In turn, this will inform on the best strategies of identifying and efficiently eliminating ionospheric contamination in EoR data moving into the Square Kilometre Array era.
description: Accepted for publication in Publications of the Astronomical Society of Australia (PASA). 10 pages, 9 figures, 1 table
Rayleigh-Ritz variation method and connected-moments polynomial approach
Creators: name: Fernandez, Francisco M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that the connected-moments polynomial approach proposed recently is equivalent to the well known Rayleigh-Ritz variation method in the Krylov space. We compare the latter with one of the original connected-moments methods by means of a numerical test on an anharmonic oscillator
Negocios digitales y usabilidad. La utilización de los videojuegos por los estudiantes universitarios en la Comunidad de Madrid
Creators: name: Martin-de-Santos, Ines
Publisher: name: Zenodo
Year: 2019
Subjects: Negocios digitales - Videojuegos - Universidad - España - Madrid - Digital Business - Video Games - University - Spain

description: El comercio de los videojuegos es una de las principales actividades económicas en el mundo que está provocando unos usos y costumbres distintos de los tradicionales. Este fenómeno afecta a todas las personas pero en especial a los jóvenes. La presente investigación es de carácter descriptivo. Interesa conocer cómo esta tendencia puede afectar a los estudiantes universitarios, para ello se ha tomado una muestra, mediante el procedimiento de cuestionarios, en las universidades de la Comunidad de Madrid con el objeto de analizar el consumo de videojuegos por este colectivo. Se observan notorias diferencias de uso por sexo, tiempo empleado, tipo de software y temas favoritos de los videojuegos. Los resultados obtenidos corrigen y actualizan estudios previos realizados anteriormente.
Axionic symmetry gaugings in N=4 supergravities and their higher-dimensional origin
Creators: name: Derendinger, Jean-Pierre
name: Petropoulos, P. Marios
name: Prezas, Nikolaos
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the class of four-dimensional N=4 supergravities obtained by gauging the axionic shift and axionic rescaling symmetries. We formulate these theories using the machinery of embedding tensors, characterize the full gauge algebras and discuss several specific features of this family of gauged supergravities. We exhibit in particular a generalized duality between massive vectors and massive two-forms in four dimensions, inherited from the gauging of the shift symmetry. We show that these theories can be deduced from higher dimensions by a Scherk-Schwarz reduction, where a twist with respect to a non-compact symmetry is required. The four-dimensional generalized duality plays a crucial role in identifying the higher-dimensional ascendent.
description: 21+1 pages; v2 minor corrections, version to appear in NPB; v3 acknowledgment added
Spectral properties of the non-hermitian Wilson-Dirac operator in the Schroedinger functional
Creators: name: Witzel, Oliver
name: Takeda, Shinji
name: Wolff, Ulli
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report on some preparatory investigations for the simulation of the QCD Schroedinger functional with a non-hermitian polynomial hybrid Monte Carlo algorithm. The complex spectrum of the non-hermitean free operator with SF boundary condititons is computed semianalytically. Then it is shown how one can obtain relevant information on the boundary of the spectral domain also in the presence of nontrivial gaugefields by monitoring the behavior of polynomials in the Wilson operator applied on random vectors.
description: 7 pages, 5 figures, 2 tables, poster presented at Lattice 2007, Regensburg, Germany
Living in a Void: Testing the Copernican Principle with Distant Supernovae
Creators: name: Clifton, Timothy
name: Ferreira, Pedro G.
name: Land, Kate
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A fundamental presupposition of modern cosmology is the Copernican Principle; that we are not in a central, or otherwise special region of the Universe. Studies of Type Ia supernovae, together with the Copernican Principle, have led to the inference that the Universe is accelerating in its expansion. The usual explanation for this is that there must exist a `Dark Energy', to drive the acceleration. Alternatively, it could be the case that the Copernican Principle is invalid, and that the data has been interpreted within an inappropriate theoretical frame-work. If we were to live in a special place in the Universe, near the centre of a void where the local matter density is low, then the supernovae observations could be accounted for without the addition of dark energy. We show that the local redshift dependence of the luminosity distance can be used as a clear discriminant between these two paradigms. Future surveys of Type Ia supernovae that focus on a redshift range of ~0.1-0.4 will be ideally suited to test this hypothesis, and hence to observationally determine the validity of the Copernican Principle on new scales, as well as probing the degree to which dark energy must be considered a necessary ingredient in the Universe.
description: 4 pages, 3 figures. Published version
Entangled Quantum Memristors
Creators: name: Kumar, Shubham
name: Cárdenas-López, Francisco A.
name: Hegade, Narendra N.
name: Chen, Xi
name: Albarrán-Arriagada, Francisco
name: Solano, Enrique
name: Barrios, Gabriel Alvarado
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose the interaction of two quantum memristors via capacitive and inductive coupling in feasible superconducting circuit architectures. In this composed system the input gets correlated in time, which changes the dynamic response of each quantum memristor in terms of its pinched hysteresis curve and their nontrivial entanglement. In this sense, the concurrence and memristive dynamics follow an inverse behavior, showing maximal values of entanglement when the hysteresis curve is minimal and vice versa. Moreover, the direction followed in time by the hysteresis curve is reversed whenever the quantum memristor entanglement is maximal. The study of composed quantum memristors paves the way for developing neuromorphic quantum computers and native quantum neural networks, on the path towards quantum advantage with current NISQ technologies.
description: 6+3 pages, 6 figures
Alignment of Stakeholder Expectations about User Involvement in Agile Software Development
Creators: name: Buchan, Jim
name: Bano, Muneera
name: Zowghi, Didar
name: MacDonell, Stephen
name: Shinde, Amrita
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: User involvement is generally considered to contributing to user satisfaction and project success and is central to Agile software development. In theory, the expectations about user involvement, such as the PO's, are quite demanding in this Agile way of working. But what are the expectations seen in practice, and are the expectations of user involvement aligned among the development team and users? Any misalignment could contribute to conflict and miscommunication among stakeholders that may result in ineffective user involvement. Objective: Our aim is to compare and contrast the expectations of two stakeholder groups (software development team, and software users) about user involvement in order to understand the expectations and assess their alignment. Method: We have conducted an exploratory case study of expectations about user involvement in an Agile software development. Qualitative data was collected through interviews to design a novel method for the assessing the alignment of expectations about user involvement by applying Repertory Grids (RG). Results: By aggregating the results from the interviews and RGs, varying degrees of expectation alignments were observed between the development team and user representatives. Conclusion: Alignment of expectations can be assessed in practice using the proposed RG instrument and can reveal misalignment between user roles and activities they participate in Agile software development projects. Although we used RG instrument retrospectively in this study, we posit that it could also be applied from the start of a project, or proactively as a diagnostic tool throughout a project to assess and ensure that expectations are aligned.
description: Conference paper, 10 pages, 1 figure, 7 tables
Polycyclic extensions of semigroups
Creators: name: Gutik, Oleg
name: Khylynskyi, Pavlo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 20M15, 20M50, 18B40, 22A15

description: In the paper we introduce a notion of the Bruck-Reilly $λ$-polycyclic extension of a monoid $S$ with a homomorphism $θ$ which is an analogue of the Bruck-Reilly extension of a monoid $S$. We describe idempotens of the semigroup $\left(\mathscr{P}_λ(θ,S),*\right)$ and Green's relations on $\left(\mathscr{P}_λ(θ,S),*\right)$. It is proved that $\left(\mathscr{P}_λ(θ,S),*\right)$ is a $0$-simple semigroup for any semigroup $S$. We find necessary and sufficient conditions on a monoid $S$ and a homomorphism $θ$ under which the semigroup $\left(\mathscr{P}_λ(θ,S),*\right)$ is regular, inverse, $0$-bisimple, combinatorial, congruence free, or inverse 0-E-unitary. Also we study topologizations of the semigroup $\left(\mathscr{P}_λ(θ,S),*\right)$.
description: 22 pages, in Ukrainian
XMM-Newton observations of the first unidentified TeV gamma-ray source TeV J2032+4130
Creators: name: Horns, D.
name: Hoffmann, A. I. D.
name: Santangelo, A.
name: Aharonian, F. A.
name: Rowell, G. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) The first unidentified very high energy gamma ray source (TeV J2032+4130) in the Cygnus region has been the subject of intensive search for a counterpart source at other wavelengths. A deep ($\approx 50$ ksec) exposure of TeV J2032+4130 with \textit{XMM-Newton} has been obtained. The contribution of point sources to the observed X-ray emission from TeV J2032+4130 is subtracted from the data. The point-source subtracted X-ray data are analyzed using blank sky exposures and regions adjacent to the position of TeV J2032+4130 in the field of view covered by the XMM-Newton telescopes to search for diffuse X-ray emission. An extended X-ray emission region with a full width half maximum (FWHM) size of $\approx 12$ arc min is found. The centroid of the emission is co-located with the position of TeV J2032+4130.The energy spectrum of the emission coinciding with the position and extension of TeV J2032+4130 can be modeled by a power-law model with a photon index $Γ=1.5\pm0.2_\mathrm{stat}\pm0.3_\mathrm{sys}$ and an energy flux integrated between 2 and 10 keV of $f_{2-10 \mathrm{keV}} \approx 7\cdot 10^{-13}$ ergs/(cm$^2$ s) which is lower than the very high energy gamma-ray flux observed from TeV J2032+4130. We conclude that the faint extended X-ray emission discovered in this observation is the X-ray counterpart of TeV J2032+4130. Formally, it can not be excluded that the extended emission is due to an unrelated population of faint, hot ($k_BT\approx 10$ keV) unresolved point-sources which by chance coincides with the position and extension of TeV J2032+4130. We discuss our findings in the frame of both hadronic and leptonic gamma-ray production scenarios.
description: 5 Pages, 3 Figures, accepted for publication in A&A
Granger Causality Based Hierarchical Time Series Clustering for State Estimation
Creators: name: Tan, Sin Yong
name: Saha, Homagni
name: Jacoby, Margarite
name: Henze, Gregor P.
name: Sarkar, Soumik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Clustering is an unsupervised learning technique that is useful when working with a large volume of unlabeled data. Complex dynamical systems in real life often entail data streaming from a large number of sources. Although it is desirable to use all source variables to form accurate state estimates, it is often impractical due to large computational power requirements, and sufficiently robust algorithms to handle these cases are not common. We propose a hierarchical time series clustering technique based on symbolic dynamic filtering and Granger causality, which serves as a dimensionality reduction and noise-rejection tool. Our process forms a hierarchy of variables in the multivariate time series with clustering of relevant variables at each level, thus separating out noise and less relevant variables. A new distance metric based on Granger causality is proposed and used for the time series clustering, as well as validated on empirical data sets. Experimental results from occupancy detection and building temperature estimation tasks show fidelity to the empirical data sets while maintaining state-prediction accuracy with substantially reduced data dimensionality.
description: 6 pages, 6 figures, 1 table
Factorizations of one dimensional classical systems
Creators: name: Kuru, S.
name: Negro, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A class of one dimensional classical systems is characterized from an algebraic point of view. The Hamiltonians of these systems are factorized in terms of two functions that together with the Hamiltonian itself close a Poisson algebra. These two functions lead directly to two time-dependent integrals of motion from which the phase motions are derived algebraically. The systems so obtained constitute the classical analogues of the well known factorizable one dimensional quantum mechanical systems.
description: 19 pages, 7 figures
On some generalization of the bicyclic monoid
Creators: name: Gutik, Oleg
name: Mykhalenych, Mykola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M15, 20M50, 18B40

description: We introduce an algebraic extension $\boldsymbol{B}_ω^{\mathscr{F}}$ of the bicyclic monoid for an arbitrary $ω$-closed family $\mathscr{F}$ subsets of $ω$ which generalizes the bicyclic monoid, the countable semigroup of matrix units and some other combinatorial inverse semigroups. It is proved that $\boldsymbol{B}_ω^{\mathscr{F}}$ is a combinatorial inverse semigroup and Green's relations, the natural partial order on $\boldsymbol{B}_ω^{\mathscr{F}}$, and its set of idempotents are described. We provide criteria of simplicity, $0$-simplicity, bisimplicity, $0$-bisimplicity of the semigroup $\boldsymbol{B}_ω^{\mathscr{F}}$ and when $\boldsymbol{B}_ω^{\mathscr{F}}$ has the identity, is isomorphic to the bicyclic semigroup or the countable semigroup of matrix units.
description: 13 pages, in Ukrainian
Security, Performance and Energy Implications of Hardware-assisted Memory Protection Mechanisms on Event-based Streaming Systems
Creators: name: Göttel, Christian
name: Pires, Rafael
name: Rocha, Isabelly
name: Vaucher, Sébastien
name: Felber, Pascal
name: Pasin, Marcelo
name: Schiavoni, Valerio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Major cloud providers such as Amazon, Google and Microsoft provide nowadays some form of infrastructure as a service (IaaS) which allows deploying services in the form of virtual machines, containers or bare-metal instances. Although software-based solutions like homomorphic encryption exit, privacy concerns greatly hinder the deployment of such services over public clouds. It is particularly difficult for homomorphic encryption to match performance requirements of modern workloads. Evaluating simple operations on basic data types with HElib, a homomorphic encryption library, against their unencrypted counter part reveals that homomorphic encryption is still impractical under realistic workloads.
description: European Commission Project: LEGaTO - Low Energy Toolset for Heterogeneous Computing (EC-H2020-780681)
Growing Curriculum Studies: Contributions of João M. Paraskeva
Creators: name: Schubert, William H.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2017

description: William H. Schubert provides an interpretative context of curriculum history for considering the recent work of Joao Paraskeva and the commentaries and extensions of it by authors included in this issue. He begins by offering commentary on his life in the curriculum field. The historical context includes perspective on curriculum scholarship throughout the 20th Century, with special emphasis on ways in which the field has been reconceptualized from the 1960s to present, moving from focus on curriculum development, to scientific research, to a wide range of scholarly efforts, to attempts to be more inclusive of diverse contributions, to internationalization, and more. Schubert’s review also sets the stage for discussion of Paraskeva’s contributions by reviewing attempts by curriculum scholars to characterize the field’s status at different junctures. Schubert addresses Paraskeva’s inclusion of sources rarely used in Western, particularly US, versions of curriculum studies as part of a new characterization of curriculum studies that includes more ideas and practices from the Global South. In doing so, Schubert discusses Paraskeva’s contribution to the tradition of expanding curricular languages and substantive dimensions of study, along with possibilities for itinerant curriculum theory and valuable caveat of epistemicide, and notes on potential for expansion of these ideas.

William H. Schubert is Professor Emeritus of Curriculum and Instruction at the University of Illinois - Chicago, where he was University Scholar, Chair of Curriculum & Instruction, Coordinator of the Ph.D. Program in Curriculum Studies, and a faculty member for 36 years. He is a Fellow of the International Academy of Education, a member of Professors of Curriculum, and in 2004 received the Lifetime Achievement Award in Curriculum Studies from the American Educational Research Association (AERA). He is author of 18 books and over 250 articles and chapters on curriculum history, theory, and development in and out of schools, had has consulted and lectured in many countries on these topics. Schubert has been president of the Society of Professors of Education, the John Dewey Society, and The Society for the Study of Curriculum History, and a vice president of AERA. Before his professorial career he was an elementary school teacher for eight years.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 1 (2017)
MCMC generation of cosmological fields far beyond Gaussianity
Creators: name: Braspenning, Joey R.
name: Sellentin, Elena
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Structure formation in our Universe creates non-Gaussian random fields that will soon be observed over almost the entire sky by the Euclid satellite, the Vera-Rubin observatory, and the Square Kilometre Array. An unsolved problem is how to analyze best such non-Gaussian fields, e.g. to infer the physical laws that created them. This problem could be solved if a parametric non-Gaussian sampling distribution for such fields were known, as this distribution could serve as likelihood during inference. We therefore create a sampling distribution for non-Gaussian random fields. Our approach is capable of handling strong non-Gaussianity, while perturbative approaches such as the Edgeworth expansion cannot. To imitate cosmological structure formation, we enforce our fields to be (i) statistically isotropic, (ii) statistically homogeneous, and (iii) statistically independent at large distances. We generate such fields via a Monte Carlo Markov Chain technique and find that even strong non-Gaussianity is not necessarily visible to the human eye. We also find that sampled marginals for pixel pairs have an almost generic Gauss-like appearance, even if the joint distribution of all pixels is markedly non-Gaussian. This apparent Gaussianity is a consequence of the high dimensionality of random fields. We conclude that vast amounts of non-Gaussian information can be hidden in random fields that appear nearly Gaussian in simple tests, and that it would be short-sighted not to try and extract it.
description: Accepted by the Open Journal of Astrophysics
Similarities between Arabic Dialects: Investigating Geographical Proximity
Creators: name: Alsudais, Abdulkareem
name: Alotaibi, Wafa
name: Alomary, Faye
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The automatic classification of Arabic dialects is an ongoing research challenge, which has been explored in recent work that defines dialects based on increasingly limited geographic areas like cities and provinces. This paper focuses on a related yet relatively unexplored topic: the effects of the geographical proximity of cities located in Arab countries on their dialectical similarity. Our work is twofold, reliant on: 1) comparing the textual similarities between dialects using cosine similarity and 2) measuring the geographical distance between locations. We study MADAR and NADI, two established datasets with Arabic dialects from many cities and provinces. Our results indicate that cities located in different countries may in fact have more dialectical similarity than cities within the same country, depending on their geographical proximity. The correlation between dialectical similarity and city proximity suggests that cities that are closer together are more likely to share dialectical attributes, regardless of country borders. This nuance provides the potential for important advancements in Arabic dialect research because it indicates that a more granular approach to dialect classification is essential to understanding how to frame the problem of Arabic dialects identification.
Choline metabolism in Nb 2 rat node lymphoma cells
Creators: name: Ko, Kerry Woon Sing
Publisher: name: University of British Columbia
Year: 2010

description: Phosphatidylcholine metabolism was investigated in Nb 2 node rat lymphoma, a cell line which is dependant on prolactin for growth in culture. Treatment of stationary cultures with prolactin stimulated the incorporation of [Me-³H] choline into phosphatidylcholine (1.7-fold after 4 h) and its aqueous precursors, mainly phosphocholine (2-fold after 4 h and 3-fold after 10 h). These effects were blocked by cycloheximide. Pulse-chase studies demonstrated that the reaction catalyzed by CTP:phosphocholine cytidylyltransferase (EC 2.7.7.15) was rate-limiting for phosphatidylcholine synthesis in Nb 2 cells. The specific activity of choline kinase (EC 2.7.1.32) increased 1.9-fold after 4 h of prolactin treatment, in correspondence with the increase in choline incorporation mentioned above, and this was also blocked by cycloheximide. The activities of the other enzymes of phosphatidylcholine synthesis were unchanged. These results suggested that phosphatidylcholine biosynthesis was not altered in Nb 2 cells after prolactin treatment. However, phosphatidylcholine levels increased in prolactin treated-cells (1.4-fold after 16 h). Turnover of labeled phosphatidylcholine was reduced 3.4-fold in prolactin treated cells. Calculated turnover rates for phosphatidylcholine averaged 3.2-fold lower in prolactin treated cells whereas the synthetic rates were similar in prolactin treated and stationary cells. Thus, Nb 2 cells utilize a novel mechanism, inhibition of turnover, to regulate the cellular levels of phosphatidylcholine during growth
Large deviations for metastable states of Markov processes with absorbing states with applications to population models in stable or randomly switching environment
Creators: name: Monthus, Cecile
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The large deviations at Level 2.5 are applied to Markov processes with absorbing states in order to obtain the explicit extinction rate of metastable quasi-stationary states in terms of their empirical time-averaged density and of their time-averaged empirical flows over a large time-window $T$. The standard spectral problem for the slowest relaxation mode can be recovered from the full optimization of the extinction rate over all these empirical observables and the equivalence can be understood via the Doob generator of the process conditioned to survive up to time $T$. The large deviation properties of any time-additive observable of the Markov trajectory before extinction can be derived from the Level 2.5 via the decomposition of the time-additive observable in terms of the empirical density and the empirical flows. This general formalism is described for continuous-time Markov chains, with applications to population birth-death model in a stable or in a switching environment, and for diffusion processes in dimension $d$.
description: v2 : 25 pages (corrected typos + new comment on the application to other types of metastable states+added references)
Kapazitiv gekoppelte Streifenleitungsantennen für Millimeterwellenanwendungen
Creators: name: Mayer, Jonathan
Publisher: name: KIT Scientific Publishing
Year: 2021
Subjects: Streifenleitungsantennen
Materialeigenschaften
Umweltbedingungen
Patch antenna
material properties
environmental conditions

description: Radar ist ein wichtiger Baustein für autonomes Fahren und ermöglicht eine genaue Erkennung des Umfelds. Die vorliegende Arbeit stellt dazu eine neuartige, kapazitiv gekoppelte Streifenleitungsantenne vor und untersucht 15 aktuelle Hochfrequenzmaterialien unter verschiedenen Umweltbedingungen. Die gemeinsame Betrachtung von Substrat und Antenne ermöglicht dabei ein optimales Zusammenwirken, sodass die Anforderungen an Zuverlässigkeit und Bandbreite erfüllt werden können.
Hate in the Classroom
Creators: name: Block, Alan A.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2017

description: What I want to think about at this moment is the teacher in the classroom, and I want to think about the presence and effect of hate in the classroom. I want to suggest that hate exists there, but not hate as it might be thought of as an emotion that exists irrationally as active antagonism—sometimes violently enacted¾between racial or ethnic or religious groups; or between boys and girls; or even between Packer and Viking fans. That presence I will refer to as rage that stems from anger! Rather, I am going to talk about the important and necessary hate (that also, indeed, stems from anger) that is experienced between teachers and students even as that similar hate necessarily manifests itself between parents and children. In the classroom, teachers exist in relationship with students, and so I think now to explore the nature of that relationship, some of which is obvious and some of which—the part I mean to consider here¾ remains significant but often unacknowledged.

Alan Block enters his 28th year in the Department of Education at the University of Wisconsin-Stout after teaching for eighteen years in the high schools of suburban New York. He has published eight books, numerous articles and book chapters on curriculum and teaching.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 1 (2017)
Inducing micromechanical motion by optical excitation of a single quantum dot
Creators: name: Kettler, Jan
name: Vaish, Nitika
name: de Lépinay, Laure Mercier
name: Besga, Benjamin
name: de Assis, Pierre-Louis
name: Bourgeois, Olivier
name: Auffèves, Alexia
name: Richard, Maxime
name: Claudon, Julien
name: Gérard, Jean-Michel
name: Pigeau, Benjamin
name: Arcizet, Olivier
name: Verlot, Pierre
name: Poizat, Jean-Philippe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hybrid quantum optomechanical systems offer an interface between a single two-level system and a macroscopical mechanical degree of freedom. In this work, we build a hybrid system made of a vibrating microwire coupled to a single semiconductor quantum dot (QD) via material strain. It was shown a few years ago, that the QD excitonic transition energy can thus be modulated by the microwire motion. We demonstrate here the reverse effect, whereby the wire is set in motion by the resonant drive of a single QD exciton with a laser modulated at the mechanical frequency. The resulting driving force is found to be almost 3 orders of magnitude larger than radiation pressure. From a fundamental aspect, this state dependent force offers a convenient strategy to map the QD quantum state onto a mechanical degree of freedom.
description: 16 pages, 12 figures
Deeper Purposes
Creators: name: Mayer, Susan Jean
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2018

description: Perhaps more clearly than most, our spring issue reflects the deeper purposes that have drawn Reconceptualist curriculum scholars together into a lasting community of practice. Throughout, spiritual, social-historical, and psychoanalytic understandings are brought to bear on the work of being present to others, to ourselves, and to the larger realities of our lives.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 2 (2018)
A Review of Folk Phenomenology
Creators: name: Leonard, Timothy
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2018

description: Samuel Rocha, author of Folk Phenomenology: Education, Study, and the Human Person, spent many of his intellectual development years honing his oratorical skills on debate teams. It is not surprising, therefore, to find this book to be an act of rhetoric, not in the narrow sense of the arts of persuasion, but in the broader sense of rhetoric found in the works of Kenneth Burke (1970), Giambattista Vico (1990) and twentieth century Vico scholar Ernesto Grassi (2001).
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 2 (2018)
The Other other in Difficult Knowledge: Thinking with Jim Garrett’s Learning to be in the World with Others
Creators: name: Di Paolantonio, Mario
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2018

description: At the close of the twentieth century, a number of scholars in education began to focus their work on how pedagogy might address a legacy of historical violence and injustices that continue to haunt and define our present. Extending from Shoshana Felman’s groundbreaking work (1992) on the vexed relationship between historical trauma, testimony, witnessing and pedagogy, a general concern was forged around how learning from traumatic events involves a break down in meaning, a crisis, and an encounter with what Deborah Britzman (1998) terms, “the failure of knowledge” (p. 265). Whereas, conventionally, learning is understood as the cumulative and progressive acquisition of knowledge leading to “mastery,” at issue for these thinkers is how the encounter with traumatic histories necessarily implies grappling with that which cannot be mastered as knowledge, with what defies and dispossess us of epistemological certainty (see: Kincheloe and Pinar, 2001). Britzman (1998b) crystalized the issue when she coined the term “difficult knowledge,” particularly accentuating the internal conflicts and psychical defences against knowing that learners erect as they become un-done by the difficult stories of others.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 2 (2018)
Incidence of Debt Interest Deduction in Computing Corporate Income Tax-CIT
Creators: name: AGOSSADOU, Stanislas Théodule Médard Dèwanou Comlan
Publisher: name: Zenodo
Year: 2023
Subjects: Deduction of financial expenses; earnings before interest and tax-EBIT; debt-related tax savings; legal tax rate; effective tax rate; financial leverage.

description: This paper focuses on tax incidence, looking for "real" loser or winner of debt interest deduction in computing CIT. The first sample is a case study of two identical firms, one indebted and the other unindebted, with the same profitable investment project over a period of time. The second sample contains 20 indebted firms in France over a 5-year period. The non-free cost and revenue assumption is used. The stylized case study of two hypothetical firms and the empirical analysis of 20 firms in France lead to the same result. In fact, Debt interest deduction in computing CIT, has as “true” losing the firm with zero financial leverage and as “true” winning the firm with non-zero financial leverage. This paper is one of the first to expand the literature by looking for the "real" loser or winner of debt interest deduction in computing CIT.
From N M2's to N D2's
Creators: name: Pang, Yi
name: Wang, Tower
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this short note, we reduce the N=6, U(N)xU(N) Chern-Simons gauge theories to N=8, U(N) Yang-Mills gauge theories. This process corresponds to recovering the world-volume theory of N D2-branes from that of N M2-branes in an intermediate energy range. The supersymmetries are enhanced because in this limit the branes localize far away from the orbifold singularity. Our main scheme is exactly in accordance with Mukhi and Papageorgakis's earlier work, although the Higgs mechanism becomes trickier in the present case. We also speculate on applying the scheme to a large class of new Bagger-Lambert models more generally.
description: 11 pages, 1 printable figure, close to the version published in PhysRevD