cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Machine Learning for Security in Vehicular Networks: A Comprehensive Survey
Creators: name: Talpur, Anum
name: Gurusamy, Mohan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Machine Learning (ML) has emerged as an attractive and viable technique to provide effective solutions for a wide range of application domains. An important application domain is vehicular networks wherein ML-based approaches are found to be very useful to address various problems. The use of wireless communication between vehicular nodes and/or infrastructure makes it vulnerable to different types of attacks. In this regard, ML and its variants are gaining popularity to detect attacks and deal with different kinds of security issues in vehicular communication. In this paper, we present a comprehensive survey of ML-based techniques for different security issues in vehicular networks. We first briefly introduce the basics of vehicular networks and different types of communications. Apart from the traditional vehicular networks, we also consider modern vehicular network architectures. We propose a taxonomy of security attacks in vehicular networks and discuss various security challenges and requirements. We classify the ML techniques developed in the literature according to their use in vehicular network applications. We explain the solution approaches and working principles of these ML techniques in addressing various security challenges and provide insightful discussion. The limitations and challenges in using ML-based methods in vehicular networks are discussed. Finally, we present observations and lessons learned before we conclude our work.
description: Submitted in IEEE Communications Surveys & Tutorials
Enhanced Half-Metallicity in Edge-Oxidized Zigzag Graphene Nanoribbons
Creators: name: Hod, Oded
name: Barone, Veronica
name: Peralta, Juan E.
name: Scuseria, Gustavo E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a novel comprehensive first-principles theoretical study of the electronic properties and relative stabilities of edge-oxidized zigzag graphene nanoribbons. The oxidation schemes considered include hydroxyl, carboxyl, ether, and ketone groups. Using screened exchange density functional theory, we show that these oxidized ribbons are more stable than hydrogen-terminated nanoribbons except for the case of the etheric groups. The stable oxidized configurations maintain a spin-polarized ground state with antiferromagnetic ordering localized at the edges, similar to the fully hydrogenated counterparts. More important, edge oxidation is found to lower the onset electric field required to induce half-metallic behavior and extend the overall field range at which the systems remain half-metallic. Once the half-metallic state is reached, further increase of the external electric field intensity produces a rapid decrease in the spin magnetization up to a point where the magnetization is quenched completely. Finally, we find that oxygen containing edge groups have a minor effect on the energy difference between the antiferromagnetic ground state and the above-lying ferromagnetic state.
description: 5 pages,5 figures, 1 table
Vertices from replica in a random matrix theory
Creators: name: Brezin, E.
name: Hikami, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Kontsevitch's work on Airy matrix integrals has led to explicit results for the intersection numbers of the moduli space of curves. In a subsequent work Okounkov rederived these results from the edge behavior of a Gaussian matrix integral. In our work we consider the correlation functions of vertices in a Gaussian random matrix theory, with an external matrix source, in a scaling limit in which the powers of the matrices and their sizes go to infinity simultaneously in a specified scale. We show that the replica method applied to characteristic polynomials of the random matrices, together with a duality exchanging N and the number of points, allows one to recover Kontsevich's results on the intersection numbers, through a simple saddle-point analysis.
On the Symmetric Space Sigma-Model Kinematics
Creators: name: Yilmaz, Nejat Tevfik
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The solvable Lie algebra parametrization of the symmetric spaces is discussed. Based on the solvable Lie algebra gauge two equivalent formulations of the symmetric space sigma model are studied. Their correspondence is established by inspecting the normalization conditions and deriving the field transformation laws.
description: 17 pages
Higgs Bosons, Electroweak Symmetry Breaking, and the Physics of the Large Hadron Collider
Creators: name: Quigg, Chris
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Large Hadron Collider, a 7 + 7 TeV proton-proton collider under construction at CERN (the European Laboratory for Particle Physics in Geneva), will take experiments squarely into a new energy domain where mysteries of the electroweak interaction will be unveiled. What marks the 1-TeV scale as an important target? Why is understanding how the electroweak symmetry is hidden important to our conception of the world around us? What expectations do we have for the agent that hides the electroweak symmetry? Why do particle physicists anticipate a great harvest of discoveries within reach of the LHC?
description: 15 pages, 6 figures, uses Contemporary Physics macros (included)
Combinatorial structure of Kirillov-Reshetikhin crystals of type D_n(1), B_n(1), A_{2n-1}(2)
Creators: name: Schilling, Anne
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 17B37; 81R50; 22E65; 05E99

description: We provide the explicit combinatorial structure of the Kirillov-Reshetikhin crystals B^{r,s} of type D_n(1), B_n(1), and A_{2n-1}(2). This is achieved by constructing the crystal analogue sigma of the automorphism of the D_n(1) (resp. B_n(1) or A_{2n-1}(2)) Dynkin diagram that interchanges the 0 and 1 node. The involution sigma is defined in terms of new plus-minus diagrams that govern the D_n to D_{n-1} (resp. B_n to B_{n-1}, or C_n to C_{n-1}) branching. It is also shown that the crystal B^{r,s} is perfect. These crystals have been implemented in MuPAD-Combinat; the implementation is discussed in terms of many examples.
description: 23 pages; version 3: references added, role of [27] clarified
Weiss oscillations in the electronic structure of modulated graphene
Creators: name: Tahir, M
name: Sabeeh, K
name: MacKinnon, A
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a theoretical study of the electronic structure of modulated graphene in the presence of a perpendicular magnetic field. The density of states and the bandwidth for the Dirac electrons in this system are determined. The appearance of unusual Weiss oscillations in the bandwidth and density of states is the main focus of this work.
description: 8 pages, 2 figures, accepted in J. Phys.: Conden. matt
Dark Energy from structure: a status report
Creators: name: Buchert, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The effective evolution of an inhomogeneous universe model in any theory of gravitation may be described in terms of spatially averaged variables. In Einstein's theory, restricting attention to scalar variables, this evolution can be modeled by solutions of a set of Friedmann equations for an effective volume scale factor, with matter and backreaction source terms. The latter can be represented by an effective scalar field (`morphon field') modeling Dark Energy. The present work provides an overview over the Dark Energy debate in connection with the impact of inhomogeneities, and formulates strategies for a comprehensive quantitative evaluation of backreaction effects both in theoretical and observational cosmology. We recall the basic steps of a description of backreaction effects in relativistic cosmology that lead to refurnishing the standard cosmological equations, but also lay down a number of challenges and unresolved issues in connection with their observational interpretation. The present status of this subject is intermediate: we have a good qualitative understanding of backreaction effects pointing to a global instability of the standard model of cosmology; exact solutions and perturbative results modeling this instability lie in the right sector to explain Dark Energy from inhomogeneities. It is fair to say that, even if backreaction effects turn out to be less important than anticipated by some researchers, the concordance high-precision cosmology, the architecture of current N-body simulations, as well as standard perturbative approaches may all fall short in correctly describing the Late Universe.
description: Invited Review for a special Gen. Rel. Grav. issue on Dark Energy, 59 pages, 2 figures; matches published version
Quantum transport of Dirac electrons in graphene in the presence of a spatially modulated magnetic field
Creators: name: Tahir, M.
name: Sabeeh, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated the electrical transport properties of Dirac electrons in a monolayer graphene sheet in the presence of a perpendicular magnetic field that is modulated weakly and periodically along one direction.We find that the Landau levels broaden into bands and their width oscillates as a function of the band index and the magnetic field.We determine the $σ_{yy}$ component of the magnetoconductivity tensor for this system which is shown to exhibit Weiss oscillations.We also determine analytically the asymptotic expressions for $σ_{yy}$.We compare these results with recently obtained results for electrically modulated graphene as well as those for magnetically modulated conventional two-dimensional electron gas (2DEG) system.We find that in the magnetically modulated graphene system cosidered in this work,Weiss oscillations in $σ_{yy}$ have a reduced amplitude compared to the 2DEG but are less damped by temperature while they have a higher amplitude than in the electrically modulated graphene system. We also find that these oscillations are out of phase by $π$ with those of the electrically modulated system while they are in phase with those in the 2DEG system.
description: Accepted in PRB: 10 pages, 3 figures
Magnetosonic solitons in a Fermionic quantum plasma
Creators: name: Marklund, M.
name: Eliasson, B.
name: Shukla, P. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Starting from the governing equations for a quantum magnetoplasma including the quantum Bohm potential and electron spin-1/2 effects, we show that the system of quantum magnetohydrodynamic (QMHD) equations admit rarefactive solitons due to the balance between nonlinearities and quantum diffraction/tunneling effects. It is found that the electron spin-1/2 effect introduces a pressure-like term with negative sign in the QMHD equations, which modifies the shape of the solitary magnetosonic waves and makes them wider and shallower. Numerical simulations of the time-dependent system shows the development of rarefactive QMHD solitary waves that are modified by the spin effects.
description: 8 pages, 3 figures, version to appear in Physical Review E
A duality approach to representations of Baumslag-Solitar groups
Creators: name: Dutkay, Dorin Ervin
name: Jorgensen, Palle E. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 22D20, 22D30, 37A15, 37A55, 42C40, 43A65, 46G15, 47D07

description: We give an operator theoretic approach to the constructions of multiresolutions as they are used in a number of basis constructions with wavelets, and in Hilbert spaces on fractals. Our approach starts with the following version of the classical Baumslag-Solitar relations $u t = t^2 u$ where $t$ is a unitary operator in a Hilbert space $\mathcal H$ and $u$ is an isometry in $\mathcal H$. There are isometric dilations of this system into a bigger Hilbert space, relevant for wavelets. For a variety of carefully selected dilations, the ``bigger'' Hilbert space may be $L^2(\br)$, and the dilated operators may be the unitary operators which define a dyadic wavelet multiresolutions of $L^2(\br)$ with the subspace $\mathcal H$ serving as the corresponding resolution subspace. That is, the initialized resolution which is generated by the wavelet scaling function(s). In the dilated Hilbert space, the Baumslag-Solitar relations then take the more familiar form $u t u^{-1} = t^2$. We offer an operator theoretic framework including the standard construction; and we show how the representations of certain discrete semidirect group products serve to classify the possibilities. For this we analyze and compare several types of unitary representations of these semidirect products: the induced representations in Mackey's theory, the wavelet representations on $L^2(\br)$, the irreducible representation on the dual, the finite dimensional representations, and the the regular representation.
description: v2, technical problem around Corollary 7.5 was corected
The modular multiplication operator and the quantized bakers maps
Creators: name: Lakshminarayan, Arul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The modular multiplication operator, a central subroutine in Shor's factoring algorithm, is shown to be a coherent superposition of two quantum bakers maps when the multiplier is 2. The classical limit of the maps being completely chaotic, it is shown that there exist perturbations that push the modular multiplication operator into regimes of generic quantum chaos with spectral fluctuations that are those of random matrices. For the initial state of relevance to Shor's algorithm we study fidelity decay due to phase and bit-flip errors in a single qubit and show exponential decay with shoulders at multiples or half-multiples of the order. A simple model is used to gain some understanding of this behavior.
$pp \to ppπ^0$ near threshold in pionless effective theory
Creators: name: Ando, Shung-ichi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The total cross section of the $pp\to ppπ^0$ reaction near threshold is calculated in pionless effective field theory with a di-baryon and external pions. The amplitudes for a leading one-body and subleading contact neutral pion production vertex are obtained including the initial and final state interactions. After estimating a low-energy constant in the contact vertex, we compare our results for the total cross section with the experimental data.
description: 15 pages, 7 figures; 6 references added, minor revision
Constraints on transmission, dispersion, and density of states in dielectric multilayers and stepwise potential barriers with arbitrary layer arrangement
Creators: name: Zhukovsky, S. V.
name: Gaponenko, S. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Normal-incidence transmission and dispersion properties of optical multilayers and one-dimensional stepwise potential barriers in the non-tunneling regime are analytically investigated. The optical paths of every constituent layer in a multilayer structure, as well as the parameters of every step of the stepwise potential barrier, are constrained by a generalized quarter-wave condition. No other restrictions on the structure geometry is imposed, i.e., the layers are arranged arbitrarily. We show that the density of states (DOS) spectra of the multilayer or barrier in question are subject to integral conservation rules similar to the Barnett-Loudon sum rule but ocurring within a finite frequency or energy interval. In the optical case, these frequency intervals are regular. For the potential barriers, only non-periodic energy intervals can be present in the spectrum of any given structure, and only if the parameters of constituent potential steps are properly chosen. Abstract The integral conservation relations derived analytically have also been verified numerically. The relations can be used in dispersion-engineered multilayer-based devices, e.g., ultrashort pulse compressors or ultracompact optical delay lines, as well as to design multiple-quantum-well electronic heterostructures with engineered DOS.
description: 10 pages, 5 figures, to be submitted to PRE
Sums of polynomial-type exceptional units modulo $n$
Creators: name: Zhao, Junyong
name: Hong, Shaofang
name: Zhu, Chaoxi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $f(x)\in\mathbb{Z}[x]$ be a nonconstant polynomial. Let $n, k$ and $c$ be integers such that $n\ge 1$ and $k\ge 2$. An integer $a$ is called an $f$-exunit in the ring $\mathbb{Z}_n$ of residue classes modulo $n$ if $\gcd(f(a),n)=1$. In this paper, we use the principle of cross-classification to derive an explicit formula for the number ${\mathcal N}_{k,f,c}(n)$ of solutions $(x_1,...,x_k)$ of the congruence $x_1+...+x_k\equiv c\pmod n$ with all $x_i$ being $f$-exunits in the ring $\mathbb{Z}_n$. This extends a recent result of Anand {\it et al.} [On a question of $f$-exunits in $\mathbb{Z}/{n\mathbb{Z}}$, {\it Arch. Math. (Basel)} {\bf 116} (2021), 403-409]. We derive a more explicit formula for ${\mathcal N}_{k,f,c}(n)$ when $f(x)$ is linear or quadratic.
description: 8 pages. Final version
Millimeter and Radio Observations of z~6 Quasars
Creators: name: Wang, Ran
name: Carilli, Chris
name: Beelen, Alexandre
name: Bertoldi, Frank
name: Fan, Xiaohui
name: Walter, Fabian
name: Menten, Karl M.
name: Omont, Alain
name: Cox, Pierre
name: Strauss, Michael A.
name: Jiang, Linhua
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m-telescope at 250 GHz and all of them with the Very Large Array (VLA) at 1.4 GHz. Four sources are detected by MAMBO-2 and six are detected by the VLA at >=3 sigma level. These sources, together with another 6 published in previous papers,yield a submillimeter/millimeter and radio observed SDSS quasar sample at z~6. We use this sample to investigate the far-infrared (FIR) andradio properties of optically bright quasars in the early universe. We compare this sample to lower redshift samples of quasars observed inthe submillimeter and millimeter wavelengths ((sub)mm), and find that the distribution of the FIR to B band optical luminosity ratio (L_FIR/L_B) is similar from z~2 to 6. We find a weak correlation between the FIR luminosity (L_FIR) and B band optical luminosity (L_B) byincluding the (sub)mm observed samples at all redshifts. Some strong (sub)mm detections in the z~6 sample have radio-to-FIR ratios within the range defined by star forming galaxies, which suggests possible co-eval star forming activity with the powerful AGN in these sources. We calculate the rest frame radio to optical ratios (R*_1.4=L_{v, 1.4GHz}/L_{v, 4400A}) for all of the VLA observed sources in the z~6 quasar sample. Only one radio detection in this sample, J083643.85+005453.3, has R*_1.4~40 and can be considered radio loud. There are no strong radio sources (R*_1.4>=100) among these SDSS quasars at z~6. These data are consistent with, although do not set strong constraints on, a decreasing radio-loud quasar fraction with increasing redshift.
description: 27 pages including 6 figures. AJ accepted
Chemical modeling of the complex organic molecules in the extended region around Sagittarius B2
Creators: name: Wang, Yao
name: Du, Fujun
name: Semenov, Dmitry
name: Wang, Hongchi
name: Li, Juan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The chemical differentiation of seven COMs in the extended region around Sgr B2 has been observed: CH$_2$OHCHO, CH$_3$OCHO, t-HCOOH, C$_2$H$_5$OH, and CH$_3$NH$_2$ were detected both in the extended region and near the hot cores Sgr B2(N) and Sgr B2(M), while CH$_3$OCH$_3$ and C$_2$H$_5$CN were only detected near the hot cores. The density and temperature in the extended region are relatively low. Different desorption mechanisms have been proposed to explain the observed COMs in cold regions but fail to explain the deficiency of CH$_3$OCH$_3$ and C$_2$H$_5$CN. We explored under what physical conditions the chemical simulations can fit the observations and explain the different spatial distribution of these species. We used the Monte Carlo method to perform a detailed parameter space study. We investigated how different mechanisms affect the results. All gas-grain chemical models based on static physics cannot fit the observations. The results based on evolving physical conditions can fit six COMs when $T\sim30-60$ K, but the best-fit temperature is still higher than the observed dust temperature of 20 K. The best agreement at $T\sim27$ K is achieved by considering a short-duration $\sim 10^2$ yr X-ray burst with $ζ_{\mathrm{CR}}=1.3\times10^{-13}$ s$^{-1}$ when the temperature is 20 K. The reactive desorption is the key mechanism for producing these COMs and inducing the low abundances of CH$_3$OCH$_3$ and C$_2$H$_5$CN. The evolution of the extended region around Sgr~B2 may have begun with a cold, $T\le10$ K phase followed by a warm-up phase. When its temperature reached $T\sim20$ K, an X-ray flare from Sgr A* with a short duration of no more than 100 years was acquired, affecting strongly the Sgr B2 chemistry. The observed COMs retain their observed abundances only several hundred years after such a flare, which could imply that such short-term X-ray flares occur relatively often.
Target space entanglement in quantum mechanics of fermions and matrices
Creators: name: Sugishita, Sotaro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider entanglement of first-quantized identical particles by adopting an algebraic approach. In particular, we investigate fermions whose wave functions are given by the Slater determinants, as for singlet sectors of one-matrix models. We show that the upper bounds of the general Rényi entropies are $N \log 2$ for $N$ particles or an $N\times N$ matrix. We compute the target space entanglement entropy and the mutual information in a free one-matrix model. We confirm the area law: the single-interval entropy for the ground state scales as $\frac{1}{3}\log N$ in the large $N$ model. We obtain an analytical $\mathcal{O}(N^0)$ expression of the mutual information for two intervals in the large $N$ expansion.
description: 28 pages + appendices, 4 figures; v2: typos corrected
On Phases of 3d ${\cal N}=2$ Chern-Simons-Matter Theories
Creators: name: Gu, Wei
name: Pei, Du
name: Zhang, Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate phases of 3d ${\cal N}=2$ Chern-Simons-matter theories, extending to three dimensions the celebrated correspondence between 2d gauged Wess-Zumino-Witten (GWZW) models and non-linear sigma models (NLSMs) with geometric targets. We find that although the correspondence in 3d and 2d are closely related by circle compactification, an important subtlety arises in this process, changing the phase structure of the 3d theory. Namely, the effective theory obtained from the circle compactification of a phase of a 3d ${\cal N}=2$ gauge theory is, in general, different from the phase of the 3d ${\cal N}=2$ theory on ${\mathbb R}^2\times S^{1}$, which means taking phases of a 3d gauge theory does not necessarily commute with compactification. We compute the Witten index of each effective theory to check this observation. Furthermore, when the matter fields have the same non-minimal charges, the 3d ${\cal N}=2$ Chern-Simons-matter theory with a proper Chern-Simons level will decompose into several identical 2d gauged linear sigma models (GLSMs) for the same target upon reduction to 2d. To illustrate this phenomenon, we investigate how vacua of the 3d gauge theory for a weighted projective space $W\mathbb{P}_{[l,\cdots,l]}$ move on the field space when we change the radius of $S^{1}$.
description: 23 pages. v2:minor improvements and references added. v3: added footnotes 6 and 7
Promising lipid source for biodiesel production fromDesmodesmussp.RMUO8 (Sphaeropleales: Scenedesmaceae)
Creators: name: Yuwadee Insumran
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: Biodiesel
Desmodesmussp.
Microalgal oil
Green microalgae

description: วารสารเกษตรพระวรุณ, 13, 1, 96-104
Improved Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant
Creators: name: MuLan Collaboration
name: Chitwood, D. B.
name: Banks, T. I.
name: Barnes, M. J.
name: Battu, S.
name: Carey, R. M.
name: Cheekatmalla, S.
name: Clayton, S. M.
name: Crnkovic, J.
name: Crowe, K. M.
name: Debevec, P. T.
name: Dhamija, S.
name: Earle, W.
name: Gafarov, A.
name: Giovanetti, K.
name: Gorringe, T. P.
name: Gray, F. E.
name: Hance, M.
name: Hertzog, D. W.
name: Hare, M. F.
name: Kammel, P.
name: Kiburg, B.
name: Kunkle, J.
name: Lauss, B.
name: Logashenko, I.
name: Lynch, K. R.
name: McNabb, R.
name: Miller, J. P.
name: Mulhauser, F.
name: Onderwater, C. J. G.
name: Ozben, C. S.
name: Peng, Q.
name: Polly, C. C.
name: Rath, S.
name: Roberts, B. L.
name: Tishchenko, V.
name: Wait, G. D.
name: Wasserman, J.
name: Webber, D. M.
name: Winter, P.
name: Zolnierczuk, P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, tau_mu = 2.197013(24) us, is in excellent agreement with the previous world average. The new world average tau_mu = 2.197019(21) us determines the Fermi constant G_F = 1.166371(6) x 10^-5 GeV^-2 (5 ppm). Additionally, the precision measurement of the positive muon lifetime is needed to determine the nucleon pseudoscalar coupling g_P.
description: As published version (PRL, July 2007)
Interacting quintessence in light of Generalized Uncertainty Principle: Cosmological perturbations and dynamics
Creators: name: Paliathanasis, Andronikos
name: Leon, Genly
name: Khyllep, Wompherdeiki
name: Dutta, Jibitesh
name: Pan, Supriya
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a cosmological scenario endowed with an interaction between the universe's dark components $-$ dark matter and dark energy. Specifically, we assume the dark matter component to be a pressure-less fluid, while the dark energy component is a quintessence scalar field with Lagrangian function modified by the quadratic Generalized Uncertainty Principle. The latter modification introduces new higher-order terms of fourth-derivative due to quantum corrections in the scalar field's equation of motion. Then we investigate asymptotic dynamics and general behaviour of solutions of the field equations for some interacting models of special interests in the literature. At the background level, the present interacting model exhibits the matter-dominated and de Sitter solutions which are absent in the corresponding quintessence model. Furthermore, to boost the background analysis, we study cosmological linear perturbations in the Newtonian gauge where we show how perturbations are modified by quantum corrected terms from the quadratic Generalized Uncertainty Principle. Depending on the coupling parameters, scalar perturbations show a wide range of behavior.
description: 24 pages, 9 compound figures, published version in EPJC
Η επίδραση της χορήγησης των Ω-3 λιπαρών οξέων και αντιοξειδωτικών στην ισχαιμική εντερίτιδα: (πειραματική μελέτη σε επιμύες)
Creators: name: Κουκουριτάκη, Ζαμπία Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ω-3 Λιπαρά οξέα
Αντιοξειδωτικά
Ισχαιμική εντερίτιδα
Ιχνοστοιχεία
Omega-3 fatty acids
Antioxidants
Ischemic enteritis
Minerals

description: Σκοπός της πειραματικής αυτής μελέτης ήταν η διερεύνηση της επίδρασης των ω3 λιπαρών οξέων και των αντιοξειδωτικών σε αλλοιώσεις που προκαλούνται από την ισχαιμία στο λεπτό έντερο μετά από ελεγχόμενη απόφραξη της άνω μεσεντερίου αρτηρίας σε επίμυες.
description: The aim of this study was to investigate the impact that n3 fatty acids and anti-oxidants have on lesions that are provoked by mesenteric ischemia induced by controlled occlusion of SMA to rats.
Bound State Calculations of the Three-Dimensional Yakubovsky Equations with the inclusion of Three-Body Forces
Creators: name: Hadizadeh, M. R.
name: Bayegan, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The four-body Yakubovsky equations in a Three-Dimensional approach with the inclusion of the three-body forces is proposed. The four-body bound state with two- and three-body interactions is formulated in Three-Dimensional approach for identical particles as function of vector Jacobi momenta, specifically the magnitudes of the momenta and the angles between them. The modified three dimensional Yakubovsky integral equations is successfully solved with the scalar two-meson exchange three-body force where the Malfliet-Tjon-type two-body force is implemented. The three-body force effects on the energy eigenvalue and the four-body wave function, as well as accuracy of our numerical calculations are presented.The four-body Yakubovsky equations in a Three-Dimensional approach with the inclusion of the three-body forces is proposed. The four-body bound state with two- and three-body interactions is formulated in Three-Dimensional approach for identical particles as function of vector Jacobi momenta, specifically the magnitudes of the momenta and the angles between them. The modified three dimensional Yakubovsky integral equations is successfully solved with the scalar two-meson exchange three-body force where the Malfliet-Tjon-type two-body force is implemented. The three-body force effects on the energy eigenvalue and the four-body wave function, as well as accuracy of our numerical calculations are presented.
description: 23 pages, 2 eps figures, 5 tables. Major changes; version to appear in European Physical Journal A
ผลกระทบของแรงจูงใจในการทำงานที่มีต่อการปฏิบัติงานที่ดีและคุณภาพงานของนักบัญชีสหกรณ์ในเขตสำนักงานตรวจบัญชีสหกรณ์ที่ 3
Creators: name: พัทธนันท์  เชิดสกุล
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: แรงจูงใจในการทำงาน, การปฏิบัติงานที่ดี, คุณภาพงาน, นักบัญชีสหกรณ์

description: 2, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Bar imprints on the inner gas kinematics of M33
Creators: name: Corbelli, Edvige
name: Walterbos, Rene' A. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of the stellar and gaseous velocities in the central 5' of the Local Group spiral M33. The data were obtained with the ARC 3.5m telescope. Blue and red spectra with resolutions from 2 to 4Åcovering the principal gaseous emission and stellar absorption lines were obtained along the major and minor axes and six other position angles. The observed radial velocities of the ionized gas along the photometric major axis of M33 remain flat at ~22 km s^{-1} all the way into the center, while the stellar velocities show a gradual rise from zero to 22 km s^{-1} over that same region. The central star cluster is at or very close to the dynamical center, with a velocity that is in accordance with M33's systemic velocity to within our uncertainties. Velocities on the minor axis are non-zero out to about 1' from the center in both the stars and gas. Together with the major axis velocities, they point at significant deviations from circular rotation. The most likely explanation for the bulk of the velocity patterns are streaming motions along a weak inner bar with a PA close to that of the minor axis, as suggested by previously published IR photometric images. The presence of bar imprints in M33 implies that all major Local Group galaxies are barred. The non-circular motions over the inner 200 pc make it difficult to constrain the shape of M33's inner dark matter halo profile. If the non-circular motions we find in this nearby Sc galaxy are present in other more distant late-type galaxies, they might be difficult to recognize.
description: 20 pages, 12 figures, ApJ in press
Impacts of Air Staging on NO Emission from a Conical Fluidized-bed Combustor Firing Sunflower Shells
Creators: name: Kasama Sirisomboon
Publisher: name: Mahasarakham University
Year: 2013
Subjects: air-staged combustion, fluidized-bed combustor, sunflower shells

description: 1, 32, Journal of SCIENCE and TECHNOLOGY Mahasarakham University
Structural parameters for globular clusters in M31 and generalizations for the fundamental plane
Creators: name: Barmby, P.
name: McLaughlin, D. E.
name: Harris, W. E.
name: Harris, G. L. H.
name: Forbes, D. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The structures of globular clusters (GCs) reflect their dynamical states and past histories. High-resolution imaging allows the exploration of morphologies of clusters in other galaxies. Surface brightness profiles from new Hubble Space Telescope observations of 34 globular clusters in M31 are presented, together with fits of several different structural models to each cluster. M31 clusters appear to be adequately fit by standard King models, and do not obviously require alternate descriptions with relatively stronger halos, such as are needed to fit many GCs in other nearby galaxies. The derived structural parameters are combined with corrected versions of those measured in an earlier survey to construct a comprehensive catalog of structural and dynamical parameters for M31 GCs with a sample size similar to that for the Milky Way. Clusters in M31, the Milky Way, Magellanic Clouds, Fornax dwarf spheroidal and NGC 5128 define a very tight fundamental plane with identical slopes. The combined evidence for these widely different galaxies strongly reinforces the view that old globular clusters have near-universal structural properties regardless of host environment.
description: AJ in press; 59 pages including 16 figures
Phonon-driven ultrafast exciton dissociation at donor-acceptor polymer heterojunctions
Creators: name: Tamura, Hiroyuki
name: Ramon, John G. S.
name: Bittner, Eric R.
name: Burghardt, Irene
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A quantum-dynamical analysis of phonon-driven exciton dissociation at polymer heterojunctions is presented, using a hierarchical electron-phonon model parameterized for three electronic states and 24 vibrational modes. Two interfering decay pathways are identified: a direct charge separation, and an indirect pathway via an intermediate bridge state. Both pathways depend critically on the dynamical interplay of high-frequency C=C stretch modes and low-frequency ring-torsional modes. The ultrafast, highly non-equilibrium dynamics is consistent with time-resolved spectroscopic observations.
การใช้กากเอทานอลหมักยีสต์Saccharomyces cerevisiae ในสูตรอาหารผสมส าเร็จต่อปริมาณการกินได้ การย่อยได้ของโภชนะและกระบวนการหมักในกระเพาะรูเมนในโคพื้นเมือง
Creators: name: ฉลอง วชิราภากร
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: กากเอทานอลหมักยีสต์
อาหารผสมส้าเร็จ
โคพื้นเมือง

description: วารสารเกษตรพระวรุณ, 13, 1, 105-115
Renormalization group study of Bose polarons
Creators: name: Isaule, Felipe
name: Morera, Ivan
name: Massignan, Pietro
name: Juliá-Díaz, Bruno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the properties of a single impurity in a dilute Bose gas, a Bose polaron, using the functional renormalization group. We use an ansatz for the effective action motivated by a derivative expansion, and we compute the energies of the attractive and repulsive branches of excitations in both two and three spatial dimensions. Three-body correlations play an important role in the attractive branch, and we account for those by including three-body couplings between two bath bosons and the impurity. Our calculations compare very favorably with state-of-the-art experimental measurements and numerical simulations.
description: 17 pages, 15 figures; Accepted version
Improvement of Dehumidifi cation Effectiveness Prediction Models
Creators: name: Thosapon Katejanekarn
Publisher: name: Mahasarakham University
Year: 2013
Subjects: dehumidification system, liguid desiccant, packed bed, effectiveness prediction model, moisture removalrate prediction

description: 1, 32, Journal of SCIENCE and TECHNOLOGY Mahasarakham University
title: Covid-19. Veränderungen des Mobilitätsverhaltens
Creators: name: Nobis, Claudia
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2021

description: Zwischen der Mobilität von Personen und der Verbreitung des Corona-Virus besteht ein enger Zusammenhang. Nur durch das Zurücklegen von Wegen und den dabei vor allem am Zielort entstehenden zwischenmenschlichen Kontakten findet das Virus neue Wirte, um am Leben zu bleiben.
Ταξιδιωτική λογοτεχνία και διαπολιτισμικός διάλογος: το παράδειγμα του Νίκου Καζαντζάκη
Creators: name: Casamassima, Antonia
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ταξιδιωτική λογοτεχνία
Μετάφραση
Πολιτισμική Διαμεσολάβηση
Πολιτισμικός διάλογος
Travel literature
Translation
Cultural mediation
Intercultural dialogue

description: Σκοπός της διατριβής ήταν η μελέτη του ρόλου της μετάφρασης λογοτεχνικών ταξιδιωτικών κειμένων ως ευνοϊκό μέσο για τον διαπολιτισμικό διάλογο. Σε αυτό το πλαίσιο πρωταρχικό ρόλο παίζει ο μεταφραστής ο οποίος είναι διαμεσολαβητής διαφορετικών κόσμων. Η εργασία διαρθρώνεται σε τρία μέρη: το πρώτο αφορά το θέμα του ταξιδιού, τη σημασία που αυτό διατηρεί για τον άνθρωπο και, τέλος, στο δεσμό μεταξύ ταξιδιού και μετάφρασης. Στο δεύτερο μέρος μελετάται ο ρόλος της γλώσσας ως μέσο έκφρασης της αντίληψης του κόσμου, η οποία εξελίσσεται, δυνητικά, σε πολιτιστικό παράγοντα, και παρουσιάζονται το συγγραφέα, Νίκο Καζαντζάκη καθώς και το έργο του Ταξιδεύοντας Ιταλία – Αίγυπτος – Σινά – Ιερουσαλήμ – Κύπρος - Ο Μοριάς. Στο τρίτο μέρος παρουσιάζουμε ορισμένα αντιπροσωπευτικότερα σημεία του προαναφερθέντος έργου, παραθέτοντας τη μετάφραση αποσπασμάτων του πρωτοτύπου στην ελληνική γλώσσα προς την ιταλική, καθώς επίσης και σχόλια περί των ταξιδιωτικών αναφορών που ελήφθησαν υπ’ όψιν.
description: The aim of the present thesis was the study of the translation of literary travel writing, as a tool to facilitate the intercultural dialogue. In this context the primary role played by the translator who is a mediator between different worlds. The work is structured in three parts: the first concerns the issue of travel, the importance that it retains for humans and finally the link between travel and translation. The second part studied the role of language to express the perception of the world, which develops, potentially, a cultural factor, and presented the writer Nikos Kazantzakis and his work Traveling Italy - Egypt - Sinai - Jerusalem - Cyprus - Morea. In the third part we present some representative points of the aforementioned project, giving a translation of the original passages in the Greek language into Italian, as well as comments on the travel reports taken into account.
Spitzer Observations of Low Luminosity Isolated and Low Surface Brightness Galaxies
Creators: name: Hinz, J. L.
name: Rieke, M. J.
name: Rieke, G. H.
name: Willmer, C. N. A.
name: Misselt, K.
name: Engelbracht, C. W.
name: Blaylock, M.
name: Pickering, T. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the infrared properties of five low surface brightness galaxies (LSBGs) and compare them with related but higher surface brightness galaxies, using Spitzer Space Telescope images and spectra. All the LSBGs are detected in the 3.6 and 4.5um bands, representing the stellar population. All but one are detected at 5.8 and 8.0um, revealing emission from hot dust and aromatic molecules, though many are faint or point-like at these wavelengths. Detections of LSBGs at the far-infrared wavelengths, 24, 70, and 160um, are varied in morphology and brightness, with only two detections at 160um, resulting in highly varied spectral energy distributions. Consistent with previous expectations for these galaxies, we find that detectable dust components exist for only some LSBGs, with the strength of dust emission dependent on the existence of bright star forming regions. However, the far-infrared emission may be relatively weak compared with normal star-forming galaxies.
description: 20 pages, 8 figures, accepted to ApJ
ChronoR: Rotation Based Temporal Knowledge Graph Embedding
Creators: name: Sadeghian, Ali
name: Armandpour, Mohammadreza
name: Colas, Anthony
name: Wang, Daisy Zhe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: Despite the importance and abundance of temporal knowledge graphs, most of the current research has been focused on reasoning on static graphs. In this paper, we study the challenging problem of inference over temporal knowledge graphs. In particular, the task of temporal link prediction. In general, this is a difficult task due to data non-stationarity, data heterogeneity, and its complex temporal dependencies. We propose Chronological Rotation embedding (ChronoR), a novel model for learning representations for entities, relations, and time. Learning dense representations is frequently used as an efficient and versatile method to perform reasoning on knowledge graphs. The proposed model learns a k-dimensional rotation transformation parametrized by relation and time, such that after each fact's head entity is transformed using the rotation, it falls near its corresponding tail entity. By using high dimensional rotation as its transformation operator, ChronoR captures rich interaction between the temporal and multi-relational characteristics of a Temporal Knowledge Graph. Experimentally, we show that ChronoR is able to outperform many of the state-of-the-art methods on the benchmark datasets for temporal knowledge graph link prediction.
Technical Review: Imaging weak magnetic field patterns on the nanometer-scale and its application to 2D materials
Creators: name: Marchiori, Estefani
name: Ceccarelli, Lorenzo
name: Rossi, Nicola
name: Lorenzelli, Luca
name: Degen, Christian L.
name: Poggio, Martino
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: Nanometer-scale imaging of magnetization and current density is the key to deciphering the mechanisms behind a variety of new and poorly understood condensed matter phenomena. The recently discovered correlated states hosted in atomically layered materials such as twisted bilayer graphene or van der Waals heterostructures are noteworthy examples. Manifestations of these states range from superconductivity, to highly insulating states, to magnetism. Their fragility and susceptibility to spatial inhomogeneities limits their macroscopic manifestation and complicates conventional transport or magnetization measurements, which integrate over an entire sample. In contrast, techniques for imaging weak magnetic field patterns with high spatial resolution overcome inhomogeneity by measuring the local fields produced by magnetization and current density. Already, such imaging techniques have shown the vulnerability of correlated states in twisted bilayer graphene to twist-angle disorder and revealed the complex current flows in quantum Hall edge states. Here, we review the state-of-the-art techniques most amenable to the investigation of such systems, because they combine the highest magnetic field sensitivity with the highest spatial resolution and are minimally invasive: magnetic force microscopy, scanning superconducting quantum interference device microscopy, and scanning nitrogen-vacancy center microscopy. We compare the capabilities of these techniques, their required operating conditions, and assess their suitability to different types of source contrast, in particular magnetization and current density. Finally, we focus on the prospects for improving each technique and speculate on its potential impact, especially in the rapidly growing field of two-dimensional (2D) materials.
description: 24 pages, 4 figures, 3 boxes, 1 table
Diagnosing collisions in the interior of a wormhole
Creators: name: Haehl, Felix M.
name: Zhao, Ying
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two distant black holes can be connected in the interior through a wormhole. Such a wormhole has been interpreted as an entangled state shared between two exterior regions. If Alice and Bob send signals into each of the black holes, they can meet in the interior. In this letter, we interpret this meeting in terms of the quantum circuit that prepares the entangled state: Alice and Bob sending signals creates growing perturbations in the circuit, whose overlap represents their meeting inside the wormhole. We argue that such overlap in the circuit is quantified by a particular six-point correlation function. Therefore, exterior observers in possession of the entangled qubits can use this correlation function to diagnose the collision in the interior without having to jump in themselves.
description: 5 pages, 5 figures; v2: Details and calculations added; v3: Published version in PRD