cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Machine Learning-based Generalized Multiscale Finite Element Method and its Application in Reservoir Simulation
Creators: name: Choubineh, Abouzar
Publisher: name: University of Liverpool Repository
Year: 2024

description: In multiscale modeling of subsurface fluid flow in heterogeneous porous media, standard polynomial basis functions are replaced by multiscale basis functions, which are used to predict pressure distribution. To produce such functions in the mixed Generalized Multiscale Finite Element Method (GMsFEM), a number of Partial Differential Equations (PDEs) must be solved, leading to significant computational overhead. The main objective of the work presented in this thesis was to investigate the efficiency of Machine Learning (ML)/Deep Learning (DL) models in reconstructing the multiscale basis functions (Basis 2, 3, 4, and 5) of the mixed GMsFEM. To achieve this, four standard models named SkiplessCNN models were first developed to predict four different multiscale basis functions. These predictions were based on two distinct datasets (initial and extended) generated, with the permeability field being the sole input. Subsequently, focusing on the extended dataset, three distinct skip connection schemes (FirstSkip, MidSkip, and DualSkip) were incorporated into the SkiplessCNN architecture. Following this, the four developed models - SkiplessCNN, FirstSkipCNN, MidSkipCNN, and DualSkipCNN - were separately combined using linear regression and ridge regression within the framework of Deep Ensemble Learning (DEL). Furthermore, the reliability of the DualSkipCNN model was examined using Monte Carlo (MC) dropout. Ultimately, two Fourier Neural Operator (FNO) models, operating on infinite-dimensional spaces, were developed based on a new dataset for directly predicting pressure distribution. Based on the results, sufficient data for the validation and testing subsets could help decrease overfitting. Additionally, all three skip connections were found to be effective in enhancing the performance of SkiplessCNN, with DualSkip being the most effective among them. As evaluated on the testing subset, the combined models using linear regression and ridge regression significantly outperformed the individual models for all basis functions. The results also confirmed the robustness of MC dropout for DualSkipCNN in terms of epistemic uncertainty. Regarding the FNO models, it was discovered that the inclusion of a MultiLayer Perceptron (MLP) in the original Fourier layers significantly improved the prediction performance on the testing subset. Looking at this work as an image (matrix)-to-image (matrix) problem, the developed data-driven models through various techniques could find applications beyond reservoir engineering.
Collaborative Augmented Reality for Virtual Reality Display Wall Environments
Creators: name: Nishimoto, Arthur
Publisher: name: University of Illinois at Chicago
Year: 2023

description: Given the adoption of many variations of virtual and augmented reality devices such as CAVE/CAVE2, large virtual reality (VR) capable displays walls/domes, and a growing set of increasingly capable and affordable head mounted displays (HMD) in both commercial and industrial applications, it has become apparent that not one platform will be appropriate for every use case scenario. HMDs are becoming increasingly more lightweight and powerful, but in collaborative settings there always will be a need for a shared display or environment to bring discussions together. The goal of this dissertation is to leverage the best of current augmented reality (AR) head mounted display technologies: 360 degree field of regard visuals, rendering of graphics over the real world, and personalized views with the best of large display wall environments: high resolution and contrast, shared visual environment, and more accurate tracking. A collaborative user study was conducted to evaluate how two participants wearing AR HMDs (HoloLens 1 and 2) in CAVE2 work with each other and the combination of visuals on the CAVE2 shared display and the AR HMD in completing a building network wiring task in3D spatial AR. With fully immersive HMDs blocking our natural sense of communication and AR still limited by resolution and field of view, combining large VR display walls and AR may provide a middle ground to maximize the growing benefits of interacting together in virtual worlds.
The VIMOS Public Extragalactic Redshift Survey (VIPERS). Exploring the dependence of the three-point correlation function on stellar mass and luminosity at 0.5
Creators: name: Moresco, M.
name: Marulli, F.
name: Moscardini, L.
name: Branchini, E.
name: Cappi, A.
name: Davidzon, I.
name: Granett, B. R.
name: de la Torre, S.
name: Guzzo, L.
name: Abbas, U.
name: Adami, C.
name: Arnouts, S.
name: Bel, J.
name: Bolzonella, M.
name: Bottini, D.
name: Carbone, C.
name: Coupon, J.
name: Cucciati, O.
name: De Lucia, G.
name: Franzetti, P.
name: Fritz, A.
name: Fumana, M.
name: Garilli, B.
name: Ilbert, O.
name: Iovino, A.
name: Krywult, J.
name: Brun, V. Le
name: Fèvre, O. Le
name: Małek, K.
name: McCracken, H. J.
name: Polletta, M.
name: Pollo, A.
name: Scodeggio, M.
name: Tasca, L. A. M.
name: Tojeiro, R.
name: Vergani, D.
name: Zanichelli, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The three-point correlation function (3PCF) is a powerful probe to investigate the clustering of matter in the Universe in a complementary way with respect to lower-order statistics, providing additional information with respect to the two-point correlation function and allowing us to shed light on biasing, nonlinear processes, and deviations from Gaussian statistics. In this paper, we analyse the first data release of the VIMOS Public Extragalactic Redshift Survey (VIPERS), determining the dependence of the three-point correlation function on luminosity and stellar mass at $z=[0.5,1.1]$. We exploit the VIPERS Public Data Release 1, consisting of more than 50,000 galaxies with B-band magnitudes in the range $-21.6\lesssim M_{\rm B}-5\log(h)\lesssim-19.9$ and stellar masses in the range $9.8\lesssim\log(M_\star[h^{-2}\,M_\odot])\lesssim 10.7$. We measure both the connected 3PCF and the reduced 3PCF in redshift space, probing different configurations and scales, in the range $2.5
description: 12 pages, 11 figures, 2 tables, accepted for publication in A&A
Supplementary document for Broadband coherent modulation imaging with no knowledge of the illumination spectrum - 6510939.pdf
Creators: name: Lin, Huixiang
name: Xu, Wenhui
name: Zhao, Jiangtao
name: Zhang, Fucai
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: The supplementary material provides information about the modulator used in the experimental , including its specifications and the calibration method employed. Additionally, we present all the diffraction patterns obtained from the experiments.
Measurement of the Higgs boson mass and $e^+e^- \to ZH$ cross section using $Z \to μ^+μ^-$ and $Z \to e^+ e^-$ at the ILC
Creators: name: Yan, Jacqueline
name: Watanuki, Shun
name: Fujii, Keisuke
name: Ishikawa, Akimasa
name: Jeans, Daniel
name: Strube, Jan
name: Tian, Junping
name: Yamamoto, Hitoshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper presents a full simulation study of the measurement of the production cross section ($σ_{\mathrm{ZH}}$) of the Higgsstrahlung process $\mathrm{e^{+}e^{-}\rightarrow ZH}$ and the Higgs boson mass ($M_{\mathrm{H}}$) at the International Linear Collider (ILC), using events in which a Higgs boson recoils against a Z boson decaying into a pair of muons or electrons. The analysis is carried out for three center-of-mass energies $\sqrt{s}$ = 250, 350, and 500 GeV, and two beam polarizations $\mathrm{e_{L}^{-}e_{R}^{+}}$ and $\mathrm{e_{R}^{-}e_{L}^{+}}$, for which the polarizations of $\mathrm{e^{-}}$ and $\mathrm{e^{+}}$ are $\left(P\mathrm{e^{-}},P\mathrm{e^{+}}\right)$ =($-$80\%, +30\%) and (+80\%, $-$30\%), respectively. Assuming an integrated luminosity of 250 $\mathrm{fb^{-1}}$ for each beam polarization at $\sqrt{s}$ = 250 GeV, where the best lepton momentum resolution is obtainable, $σ_{\mathrm{ZH}}$ and $M_{\mathrm{H}}$ can be determined with a precision of 2.5\% and 37 MeV for $\mathrm{e_{L}^{-}e_{R}^{+}}$ and 2.9\% and 41 MeV for $\mathrm{e_{R}^{-}e_{L}^{+}}$, respectively. Regarding a 20 year ILC physics program, the expected precisions for the $\mathrm{HZZ}$ coupling and $M_{\mathrm{H}}$ are estimated to be 0.4\% and 14 MeV, respectively. The event selection is designed to optimize the precisions of $σ_{\mathrm{ZH}}$ and $M_{\mathrm{H}}$ while minimizing the bias on the measured $σ_{\mathrm{ZH}}$ due to discrepancy in signal efficiencies among Higgs decay modes. For the first time, model independence has been demonstrated to a sub-percent level for the $σ_{\mathrm{ZH}}$ measurement at each of the three center-of-mass energies. The results presented show the impact of center-of-mass energy and beam polarization on the evaluated precisons and serve as a benchmark for the planning of the ILC run scenario.
description: arXiv admin note: substantial text overlap with arXiv:1601.06481; v3: Fix typo in Table I
On Rings of Differential Rota-Baxter Operators
Creators: name: Gao, Xing
name: Guo, Li
name: Rosenkranz, Markus
Publisher: name: arXiv
Year: 2015
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16S32, 13N10, 16W99, 45N05, 47G10, 12H20

description: Using the language of operated algebras, we construct and investigate a class of operator rings and enriched modules induced by a derivation or Rota-Baxter operator. In applying the general framework to univariate polynomials, one is led to the integro-differential analogs of the classical Weyl algebra. These are analyzed in terms of skew polynomial rings and noncommutative Groebner bases.
description: 30 pages
Determinantal sets, singularities and application to optimal control in medical imagery
Creators: name: Bonnard, Bernard
name: Faugère, Jean-Charles
name: Jacquemard, Alain
name: Din, Mohab Safey El
name: Verron, Thibaut
Publisher: name: arXiv
Year: 2016
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: Control theory has recently been involved in the field of nuclear magnetic resonance imagery. The goal is to control the magnetic field optimally in order to improve the contrast between two biological matters on the pictures. Geometric optimal control leads us here to analyze mero-morphic vector fields depending upon physical parameters , and having their singularities defined by a deter-minantal variety. The involved matrix has polynomial entries with respect to both the state variables and the parameters. Taking into account the physical constraints of the problem, one needs to classify, with respect to the parameters, the number of real singularities lying in some prescribed semi-algebraic set. We develop a dedicated algorithm for real root classification of the singularities of the rank defects of a polynomial matrix, cut with a given semi-algebraic set. The algorithm works under some genericity assumptions which are easy to check. These assumptions are not so restrictive and are satisfied in the aforementioned application. As more general strategies for real root classification do, our algorithm needs to compute the critical loci of some maps, intersections with the boundary of the semi-algebraic domain, etc. In order to compute these objects, the determinantal structure is exploited through a stratifi-cation by the rank of the polynomial matrix. This speeds up the computations by a factor 100. Furthermore, our implementation is able to solve the application in medical imagery, which was out of reach of more general algorithms for real root classification. For instance, computational results show that the contrast problem where one of the matters is water is partitioned into three distinct classes.
Supplementary document for Hyperspectral confocal microscopy in the short-wave infrared range - 6507491.pdf
Creators: name: Sung, Yongjin
name: Wang, Weizhong
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: classificationCode: 90604
subject: Microelectronics and Integrated Circuits

description: Supplementary Figure
Almost gentle algebras and their trivial extensions
Creators: name: Green, Edward L.
name: Schroll, Sibylle
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper we define almost gentle algebras. They are monomial special multiserial algebras generalizing gentle algebras. We show that the trivial extension of an almost gentle algebra by its minimal injective co-generator is a symmetric special multiserial algebra and hence a Brauer configuration algebra. Conversely, we show that any almost gentle algebra is an admissible cut of a unique Brauer configuration algebra and as a consequence, we obtain that every Brauer configuration algebra with multiplicity function identically one, is the trivial extension of an almost gentle algebra. We show that to every almost gentle algebra A is associated a hypergraph, and that this hypergraph induces the Brauer configuration of the trivial extension of A. Amongst other things, this gives a combinatorial criterion to decide when two almost gentle algebras have isomorphic trivial extensions.
description: Added new Sections on hypergraphs and Brauer configurations associated to almost gentle algebras
Vacuum Stability and Radiative Electroweak Symmetry Breaking in an SO(10) Dark Matter Model
Creators: name: Mambrini, Yann
name: Nagata, Natsumi
name: Olive, Keith A.
name: Zheng, Jiaming
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Vacuum stability in the Standard Model is problematic as the Higgs quartic self-coupling runs negative at a renormalization scale of about $10^{10}$ GeV. We consider a non-supersymmetric SO(10) grand unification model for which gauge coupling unification is made possible through an intermediate scale gauge group, $G_{\text{int}}=\text{SU}(3)_C\otimes \text{SU}(2)_L\otimes \text{SU}(2)_R \otimes \text{U}(1)_{B-L}$. $G_{\text{int}}$ is broken by the vacuum expectation value of a 126 of SO(10) which not only provides for neutrino masses through the seesaw mechanism but also preserves a discrete $\mathbb{Z}_2$ that can account for the stability of a dark matter candidate, here taken to be the Standard Model singlet component of a bosonic 16. We show that in addition to these features the model insures the positivity of the Higgs quartic coupling through its interactions to the dark matter multiplet and 126. We also show that the Higgs mass squared runs negative triggering electroweak symmetry breaking. Thus, the vacuum stability is achieved along with radiative electroweak symmetry breaking and captures two more important elements of supersymmetric models without low-energy supersymmetry. The conditions for perturbativity of quartic couplings and for radiative electroweak symmetry breaking lead to tight upper and lower limits on the dark matter mass, respectively, and this dark matter mass region (1.35-2 TeV) can be probed in future direct detection experiments.
description: 5 pages, 3 figures; journal version
Irreducible modules for equivariant map superalgebras and their extensions
Creators: name: Calixto, Lucas
name: Macedo, Tiago
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B10, 17B55, 17B56, 17B65

description: Let $Γ$ be a group acting on a scheme $X$ and on a Lie superalgebra $\mathfrak{g}$, both defined over an algebraically closed field of characteristic zero $\Bbbk$. The corresponding equivariant map superalgebra $M(\mathfrak{g}, X)^Γ$ is the Lie superalgebra of equivariant regular maps from $X$ to $\mathfrak{g}$. In this paper we complete the classification of finite-dimensional irreducible $M(\mathfrak{g}, X)^Γ$-modules when $\mathfrak{g}$ is a finite-dimensional simple Lie superalgebra, $X$ is of finite type and $Γ$ is a finite abelian group acting freely on the rational points of $X$, by classifying these $M(\mathfrak{g},X)^Γ$-modules in the case where $\mathfrak{g}$ is a periplectic Lie superalgebra. We also describe extensions between irreducible modules in terms of homomorphisms and extensions between modules for certain finite-dimensional Lie superalgebras.
EFECTIVIDAD DE LA AURICULOTERAPIA Y ACUPUNTURA PARA EL TRATAMIENTO DE LA OBESIDAD: UNA REVISIÓN SISTEMÁTICA DE REVISIONES SISTEMÁTICAS PROTOCOLO
Creators: name: Minaya, Rudolf
name: Laredo López, Edwin Oswaldo
Publisher: name: figshare
Year: 2023
Subjects: Traditional Chinese medicine and treatments

description: Protocolo para la realizacion de una revision sistematica que evalua la metodologia de revisiones sistematicas sobre la eficacia de la acupuntura para la reduccion de medidas antropometricas en pacientes con obesidad.
Effective potentials in a bidimensional vibrated granular gas
Creators: name: Velázquez-Pérez, Stephanie
name: Pérez-Ángel, Gabriel
name: Nahmad-Molinari, Yuri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a numerical study of the spatial correlations of a quasi-two-dimensional granular fluid kept in a non-static steady state via vertical shaking. The simulations explore a wide range of packing fractions, vertical accelerations and restitution coefficients, always staying below the crystallization limit. From the simulations we obtain the relevant Pair Distribution Functions (PDFs), and effective potentials for the interparticle interaction are extracted from these PDFs via the Ornstein-Zernike equation with the Percus-Yevick closure. The correlations in the granular structures originating from these effective potentials are checked against the originating PDF using standard Monte Carlo simulations, and we find in general an excellent agreement. The resulting effective potentials show an increase of the spatial correlation at contact with the decreasing values of the restitution coefficient, and a general tendency of the potentials to display deeper wells for more dissipative dynamics. An exception to this general trend appears for certain combinations of density and forcing, where resonant bouncing increases correlations.
description: 22 pages, 11 figures, submitted to Physical Review E
Generalized Sparse Precision Matrix Selection for Fitting Multivariate Gaussian Random Fields to Large Data Sets
Creators: name: Tajbakhsh, Sam Davanloo
name: Aybat, Necdet Serhat
name: del Castillo, Enrique
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We present a new method for estimating multivariate, second-order stationary Gaussian Random Field (GRF) models based on the Sparse Precision matrix Selection (SPS) algorithm, proposed by Davanloo et al. (2015) for estimating scalar GRF models. Theoretical convergence rates for the estimated between-response covariance matrix and for the estimated parameters of the underlying spatial correlation function are established. Numerical tests using simulated and real datasets validate our theoretical findings. Data segmentation is used to handle large data sets.
Coordinated Eye and Head Movements for Gaze Interaction in 3D Environments
Creators: name: Sidenmark, Ludwig
Publisher: name: Lancaster University
Year: 2023

description: Gaze is attractive for interaction, as we naturally look at objects we are interested in. As a result, gaze has received significant attention within human-computer interaction as an input modality. However, gaze has been limited to only eye movements in situations where head movements are not expected to be used or as head movements in an approximation of gaze when an eye tracker is unavailable. From these observations arise an opportunity and a challenge: we propose to consider gaze as multi-modal in line with psychology and neuroscience research to more accurately represent user movements. The natural coordination of eye and head movements could then enable the development of novel interaction techniques to further the possibilities of gaze as an input modality. However, knowledge of the eye and head coordination in 3D environments and its usage for interaction design is limited. This thesis explores eye and head coordination and their potential for interaction in 3D environments by developing interaction techniques that aim to tackle established gaze-interaction issues. We study fundamental eye, head, and body movements in virtual reality during gaze shifts. From the study results, we design interaction techniques and applications that avoid the Midas touch issue, allow expressive gaze- based interaction, and handle eye tracking accuracy issues. We ground the evaluation of our interaction techniques through empirical studies. From the techniques and study results, we define three design principles for coordinated eye and head interaction from these works that distinguish between eye- only and head-supported gaze shifts, eye-head alignment as input, and distinguishing head movements for gestures and head movements that naturally occur to support gaze. We showcase new directions for gaze-based interaction and present a new way to think about gaze by taking a more comprehensive approach to gaze interaction and showing that there is more to gaze than just the eyes.
External control of qubit-photon interaction and multi-qubit reset in a dissipative quantum network
Creators: name: Zhang, Xian-Peng
name: Shen, Li-Tuo
name: Yin, Zhang-Qi
name: Sun, Luyan
name: Wu, Huai-Zhi
name: Yang, Zhen-Biao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum network is a promising quantum many-body system because of its tailored geometry and controllable interaction. Here, we propose an external control scheme for the qubit-photon interaction and multiqubit reset in a dissipative quantum network, which comprises superconducting circuit chains with microwave drives and filter-filter couplings. The traditional multiqubit reset of the quantum network requires physically disconnected qubits to prevent their entanglement. However, we use an original effect of dissipation, i.e., consuming the entanglement generated by qubits' interaction, to achieve an external control of the multiqubit reset in an always-connected superconducting circuit. The reset time is independent of the number of qubits in the quantum network. Our proposal can tolerate considerable fluctuations in the system parameters and can be applicable to higher-dimensional quantum networks.
description: Comments are welcome!
Personale, classico, manifesto
Creators: name: Angeleri, Micol
Publisher: name: La Rivista di Engramma
Year: 2008
Subjects: Advertising
Visual Arts
Classic tradition
Classico Manifesto

description: Micòl Angeleri, Art Director and Cool Hunter Freelance 1861 United, confronts the discussion themes proposed within the framework of the 'Classico Manifesto' exhibition: the creative process in advertising, the relationship with the classical tradition, the dynamics of visual memory.
Development and Optimization of Multiphase Alloys and Oxide Composites for Corrosive Environments
Creators: name: Obregon Machado, Javier Enrique
Publisher: name: University of Illinois at Chicago
Year: 2023

description: Nuclear energy is considered to become one of the main sources to meet the clean electricity demand. However, the storage and disposal of spent nuclear fuel is of environmental concern. Pyroprocessing is being developed to recover and recycle the spent nuclear fuel to be reused in new fast nuclear reactors. This process generates highly radioactive waste streams, some of which are processed separately producing metallic and ceramic waste forms. Combining different waste streams will benefit the waste management operations and reduce its total volume. However, the metallurgical processing of these characteristically different waste streams can be challenging, to mitigate any possible radionuclide release in a geological repository environment. In this study, representative nuclear metallic waste forms have been fabricated that incorporate metal and ceramic wastes generated by the processing of used stainless steel-clad fuels into a single composite metal/oxide waste form. Four metallic alloys were made first with the same base formulation to represent waste streams dominated by 316L stainless steel cladding with small amounts of residual zirconia. The formulations were modified slightly by adding minor amounts of passivating elements, Mo and Zr, to improve the durabilities (corrosion performance) of the primary host phases. The metallurgical effects of Mo and Zr additions to the 316L stainless steel and the impact on the corrosion performance in multiple environmental conditions, such as pH, oxidation power (redox), and temperature were investigated. A series of well-established electrochemical tests were conducted and correlated with microstructural changes to determine the optimum multiphase alloy composition. The second part of the investigation focuses on determining the maximum oxide loading capacity of the optimal multiphase alloy for fabrication of a robust multiphase alloy/oxide composite and corrosion resistance. Electrochemical tests under the same wide range of Eh-pH-T conditions were conducted to demonstrate that durable multiphase alloy/ceramic waste forms can be formulated for the range of waste streams compositions that could occur during spent fuel reprocessing. This investigation provides a range of possible compositions to produce durable multiphase alloy and robust multiphase alloy-oxide composite waste forms to reduce the high-level nuclear waste to be stored in deep geological repositories.
Electron spin resonance from NV centers in diamonds levitating in an ion trap
Creators: name: Delord, Tom
name: Nicolas, Louis
name: Schwab, Lucien
name: Hétet, Gabriel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report observations of the Electron Spin Resonance (ESR) of Nitrogen Vacancy (NV) centers in diamonds that are levitating in an ion trap. Using a needle Paul trap operating under ambient conditions, we demonstrate efficient microwave driving of the electronic spin and show that the spin properties of deposited diamond particles measured by the ESR are retained in the Paul trap. We also exploit the ESR signal to monitor the rotation of levitating monocrystals, a first step towards spin-controlled mechanical systems in scattering-free traps.
description: 6 figures, 8 pages
Mean-field SDE driven by a fractional Brownian motion and related stochastic control problem
Creators: name: Buckdahn, Rainer
name: Jing, Shuai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 93E20, 60H05, 60H35

description: We study a class of mean-field stochastic differential equations driven by a fractional Brownian motion with Hurst parameter $H\in(1/2,1)$ and a related stochastic control problem. We derive a Pontryagin type maximum principle and the associated adjoint mean-field backward stochastic differential equation driven by a classical Brownian motion, and we prove that under certain assumptions, which generalise the classical ones, the necessary condition for the optimality of an admissible control is also sufficient.
description: 34 pages
Gauge-covariant decomposition and magnetic monopole for G(2) Yang-Mills field
Creators: name: Matsudo, Ryutaro
name: Kondo, Kei-Ichi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a gauge-covariant decomposition of the Yang-Mills field with an exceptional gauge group $G(2)$, which extends the field decomposition invented by Cho, Duan-Ge, and Faddeev-Niemi for the $SU(N)$ Yang-Mills field. As an application of the decomposition, we derive a new expression of the non-Abelian Stokes theorem for the Wilson loop operator in an arbitrary representation of $G(2)$. The resulting new form is used to define gauge-invariant magnetic monopoles in the $G(2)$ Yang-Mills theory. Moreover, we obtain the quantization condition to be satisfied by the resulting magnetic charge. The method given in this paper is general enough to be applicable to any semi-simple Lie group other than $SU(N)$ and $G(2)$.
description: 20 pages, 4 figures, minor changes (Appendix C and references added), a version accepted for publication in Physical Review D
Quantum coherent three-terminal thermoelectrics: maximum efficiency at given power output
Creators: name: Whitney, Robert S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the nonlinear scattering theory for three-terminal thermoelectric devices, used for power generation or refrigeration. Such systems are quantum phase-coherent versions of a thermocouple, and the theory applies to systems in which interactions can be treated at a mean-field level. We consider an arbitrary three-terminal system in any external magnetic field, including systems with broken time-reversal symmetry, such as chiral thermoelectrics, as well as systems in which the magnetic field plays no role. We show that the upper bound on efficiency at given power output is of quantum origin and is stricter than Carnot's bound. The bound is exactly the same as previously found for two-terminal devices, and can be achieved by three-terminal systems with or without broken time-reversal symmetry, i.e. chiral and non-chiral thermoelectrics.
description: 22 pages (final version)
Room-temperature quantum transport signatures in graphene/LaAlO3/SrTiO3 heterostructures
Creators: name: Jnawali, Giriraj
name: Huang, Mengchen
name: Hsu, Jen-Feng
name: Lee, Hyungwoo
name: Lee, Jung-Woo
name: Irvin, Patrick
name: Eom, Chang-Beom
name: D'Urso, Brian
name: Levy, Jeremy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The pseudospin quantum degree of freedom is one of the most remarkable properties of graphene that distinguishes it from ordinary two-dimensional metals and semiconductors. Pseudospin quantum interference leads to weak antilocalization (WAL) and is influenced strongly by point defects and thermal perturbations that break chirality and destroy phase coherence. Preserving and manipulating quantum transport properties up to room temperature is key to realizing practical pseudospin-based graphene devices. Here we report fabrication and transport characterization of graphene field-effect devices on a complex-oxide heterostructure, LaAlO3/SrTiO3. Signatures of WAL, a consequence of pseudospin quantum interference, persist up to room temperature. The LaAlO3/SrTiO3 substrate plays a critical role in suppressing short-range impurity scattering and electron-phonon coupling. The observation of quantum transport signatures at room temperature is unique to this system and presents new opportunities for the development of pseudospin-based devices and novel multifunctional devices that couple to the complex-oxide interface.
description: 38 pages, 5 figures (Suppl. Info. 17 pages, 10 figures, 1 table)
Ragas in Bollywood music A microscopic view through multrifractal cross-correlation method
Creators: name: Sanyal, Shankha
name: Banerjee, Archi
name: Roy, Souparno
name: Nag, Sayan
name: Sengupta, Ranjan
name: Ghosh, Dipak
Publisher: name: arXiv
Year: 2016
Subjects: subject: Sound (cs.SD)
subject: FOS: Computer and information sciences

description: Since the start of Indian cinema, a number of films have been made where a particular song is based on a certain raga. These songs have been taking a major role in spreading the essence of classical music to the common people, who have no formal exposure to classical music. In this paper, we look to explore what are the particular features of a certain raga which make it understandable to common people and enrich the song to a great extent. For this, we chose two common ragas of Hindustani classical music, namely "Bhairav" and "Mian ki Malhar" which are known to have widespread application in popular film music. We have taken 3 minute clips of these two ragas from the renderings of two eminent maestros of Hindustani classical music. 3 min clips of ten (10) widely popular songs of Bollywood films were selected for analysis. These were analyzed with the help of a latest non linear analysis technique called Multifractal Detrended Cross correlation Analysis (MFDXA). With this technique, all parts of the Film music and the renderings from the eminent maestros are analyzed to find out a cross correlation coefficient (γx) which gives the degree of correlation between these two signals. We hypothesize that the parts which have the highest degree of cross correlation are the parts in which that particular raga is established in the song. Also the variation of cross correlation coefficient in the different parts of the two samples gives a measure of the modulation that is executed by the singer. Thus, in nutshell we try to study scientifically the amount of correlation that exists between the raga and the same raga being utilized in Film music. This will help in generating an automated algorithm through which a naïve listener will relish the flavor of a particular raga in a popular film song. The results are discussed in detail.
description: 7 pages, 5 figures
All $SL_2$-tilings come from infinite triangulations
Creators: name: Bessenrodt, Christine
name: Holm, Thorsten
name: Jorgensen, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E15, 13F60

description: An $SL_2$-tiling is a bi-infinite matrix of positive integers such that each adjacent 2 by 2 submatrix has determinant 1. Such tilings are infinite analogues of Conway-Coxeter friezes, and they have strong links to cluster algebras, combinatorics, mathematical physics, and representation theory. We show that, by means of so-called Conway-Coxeter counting, every $SL_2$-tiling arises from a triangulation of the disc with two, three or four accumulation points. This improves earlier results which only discovered $SL_2$-tilings with infinitely many entries equal to 1. Indeed, our methods show that there are large classes of tilings with only finitely many entries equal to 1, including a class of tilings with no 1's at all. In the latter case, we show that the minimal entry of a tiling is unique.
description: 47 pages, 29 figures. This is the Final Accepted Version which is to appear in Advances in Mathematics
Chromosome 9p21 polymorphism is associated with myocardial infarction but not with clinical outcome in Han Chinese
Creators: name: Zhang, Qi
name: Zhang, Rui Yan
name: Wang, Ling Jie
name: Yan, Xiao Xiang
name: Chen, Qiu Jing
name: Shen, Wei Feng
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Background: rs1333049 polymorphism on chromosome 9p21 has been shown to affect susceptibility to coronary artery disease (CAD) in Caucasians. This study examined the association of rs1333049 with myocardial infarction (MI), angiographic severity of CAD and clinical outcome after a first acute MI in Han Chinese. Methods: rs1333049 polymorphism was genotyped in 520 patients with a first acute MI and in 560 controls. The number of angiographically documented diseased coronary arteries (luminal diameter stenosis ≥50%), echocardiographic left ventricular ejection fraction (LVEF), and major adverse cardiac events (MACE) during follow-up (mean, 29±15 months) were recorded. Results: Patients with MI had higher frequencies of the CC genotype (30.0% vs. 20.7%) or C allele (55.5% vs. 46.2%) compared with controls (all p<0.01). rs1333049 polymorphism was strongly associated with MI [odds ratio (OR) 1.48, 95% confidence interval (CI) 1.22–1.79] after adjusting for traditional risk factors. Although longer hospitalization stay was observed in patients with the rs1333049-C allele, this polymorphism was not related to angiographic severity of CAD, LVEF, and occurrence of MACE after MI. Conclusions: This study demonstrates an association of rs1333049 polymorphism locus on chromosome 9p21 with risk for MI, but not with post-MI prognosis in Han Chinese. Clin Chem Lab Med 2009;47:917–22.
Pseudogap and superconductivity in two-dimensional doped charge-transfer insulators
Creators: name: Fratino, L.
name: Sémon, P.
name: Sordi, G.
name: Tremblay, A. -M. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: High-temperature superconductivity emerges in the CuO$_2$ plane upon doping a Mott insulator. To ascertain the influence of Mott physics plus short-range correlations, we solve a three-band copper-oxide model in the charge-transfer regime using cellular dynamical mean-field theory with continuous-time quantum Monte Carlo as an impurity solver. We report the normal and superconducting phase diagram of this model as a function of doping, interaction strength and temperature. Upon hole doping of the charge-transfer insulator, the phase boundary between pseudogap and correlated metal consists of a first-order transition line at finite doping ending at a critical point, as in the one-band model. Beyond the endpoint, the phase boundary continues as a Widom crossover line, across which thermodynamic quantities peak. This phase boundary determines changes in the pairing mechanism and is an emergent phenomenon characteristic of doped Mott insulators, independent of many microscopic details. Broader implications are discussed.
description: 6 pages, 4 figures and supplementary information; published version
title: Translation and Feminism in Twentieth- and Twenty-First Century China
title: A Case Study on Charlotte Brontë’s Jane Eyre
titleType: Subtitle
Creators: name: Zhang, Lei
Publisher: name: Lancaster University
Year: 2023
Subjects: Feminism
Translation
Chinese

description: As the circuitry of literature grows increasingly international, translation studies of women writers have in recent years attracted great critical attention. This thesis will explore the Chinese translation and the power of feminism expressed in the translated text. This thesis will mainly focus on the reception of Charlotte Brontë’s Jane Eyre, which is one of the most popular English novels in China. The 20th century is an important period for China when Chinese society developed from a feudalist to modern society. And the 21st century is a new period for China when achievements came into being following two decades of reform and opening-up policies. The translations of Western writers’ works bringing feminism, a new trend of thought in China, provided a new figure and image of women and prompted Chinese women’s ideas of liberation and independence. In this thesis, I enquire after the connection between the development of feminism and translations. I research how women’s agency and feminist thought are presented through the comparison between translations by both feminist-leaning and non-feminist translators. The ideology of translators is evaluated and classified with an analysis of their prefaces, academic study, and life experience. I build the corpora of translated texts and collect data to study the language features of texts. Comparative analysis is directed towards the actual language used consciously or unconsciously in texts by translators with different feminist thoughts. The findings address three issues: firstly, feminism tends to be presented through strong-woman models in the Chinese context; secondly, feminist translations have contributed to the reconstruction of Chinese femininity; and finally, feminist strategies are used as special tendencies in the Chinese context.
Variation of singing styles within a particular Gharana of Hindustani classical music A nonlinear multifractal study
Creators: name: Banerjee, Archi
name: Sanyal, Shankha
name: Sengupta, Ranjan
name: Ghosh, Dipak
Publisher: name: arXiv
Year: 2016
Subjects: subject: Sound (cs.SD)
subject: FOS: Computer and information sciences

description: Hindustani classical music is entirely based on the "Raga" structures. In Hindustani music, a "Gharana" or school refers to the adherence of a group of musicians to a particular musical style. Gharanas have their basis in the traditional mode of musical training and education. Every Gharana has its own distinct features; though within a particular Gharana, significant differences in singing styles are observed between generations of performers, which can be ascribed to the individual creativity of that singer. This work aims to study the evolution of singing style among four artists of four consecutive generations from Patiala Gharana. For this, alap and bandish parts of two different Ragas sung by the four artists were analyzed with the help of non linear multifractal analysis (MFDFA) technique. The multifractal spectral width obtained from the MFDFA method gives an estimate of the complexity of the signal. The observations from the variation of spectral width give a cue towards the scientific recognition of Guru-Shisya Parampara (teacher-student tradition) - a hitherto much-heard philosophical term. From a quantitative approach this study succeeds in analyzing the evolution of singing styles within a particular Gharana over generations of artists as well as the effect of globalization in the field of classical music.
description: 11 pages, 8 figures
Integral manifolds for nonautonomous slow-fast systems without dichotomy
Creators: name: Shchetinina, Ekaterina
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II
Year: 2004
Subjects: subject: Integralmannigfaltigkeiten
subject: langsamen und schnellen Variablen
subject: Canard-Trajektorien
subject: fehlende Dichotomie
subject: integral manifolds
subject: slow-fast systems
subject: canard-trajectories
subject: missing dichotomy
subject: 510 Mathematik
subject: 27 Mathematik

description: In der vorliegenden Arbeit betrachten wir ein System nichtautonomer gewöhnlicher Differentialgleichungen, das aus zwei gekoppelten Teilsystemen besteht. Die Teilsysteme bestehen aus langsamen bzw. schnellen Variablen, wobei die Zeitskalierung durch Multiplikation der rechten Seite eines Teilsystems mit einem kleinen Faktor erzeugt wird. Das Ziel unserer Untersuchungen besteht im Nachweis der Existenz einer Integralmannigfaltigkeit, mit deren Hilfe die schnellen Variablen eliminiert werden können. Dabei verzichten wir auf die übliche Annahme einer Dichotomiebedingung und ersetzen diese durch die Hinzunahme eines zusätzlichen Steuervektors. Wir beweisen, dass unter gewissen Voraussetzungen über die rechten Seiten der Teilsysteme ein eindeutiger Steuervektor existiert, der die Existenz der gewünschten Integralmannigfaltigkeit impliziert. Das Prinzip des Nachweises einer solchen beschränkten Integralmannigfaltigkeit basiert auf dem Zusammenkleben von anziehenden und abstossenden invarianten Mannigfaltigkeiten. In der Arbeit wird die Glattheit dieser Mannigfaltigkeit sowie deren asymptotische Entwicklung nach dem kleinen Parameter untersucht.
description: This work is devoted to nonautonomous slow-fast systems of ordinary differential equation without dichotomy. We are interested in the existence of a slow integral manifold in order to eliminate the fast variables. The peculiarity of the problem under consideration is that the right hand side of the system depends on some parameter vector which can be considered as a control to be determined in order to guarantee the existence of an integral manifold consisting of canard trajectories. We call the vector function as gluing function. We prove that under some conditions on the right hand side of the system there exists a unique gluing function such that the system has a slow integral manifold. We investigate the problems of asymptotic expansions of the integral manifold and the gluing function, and study their smoothness.
A survey on Heegaard Floer homology and concordance
Creators: name: Hom, Jennifer
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57N70, 57R58

description: In this survey article, we discuss several different knot concordance invariants coming from the Heegaard Floer homology package of Ozsvath and Szabo. Along the way, we prove that if two knots are concordant, then their knot Floer complexes satisfy a certain type of stable equivalence.
description: 20 pages, 6 figures, 1 table; v2: minor revisions throughout; v3: added Remark 3.15
Mean Absolute Percentage Error for regression models
Creators: name: De Myttenaere, Arnaud
name: Golden, Boris
name: Grand, Bénédicte Le
name: Rossi, Fabrice
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We study in this paper the consequences of using the Mean Absolute Percentage Error (MAPE) as a measure of quality for regression models. We prove the existence of an optimal MAPE model and we show the universal consistency of Empirical Risk Minimization based on the MAPE. We also show that finding the best model under the MAPE is equivalent to doing weighted Mean Absolute Error (MAE) regression, and we apply this weighting strategy to kernel regression. The behavior of the MAPE kernel regression is illustrated on simulated data.
Online Appendix-Chapter 4. Collegial versus Personal Parliaments
Creators: name: Friedman, Avital
name: zamir, shahaf
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440803
subject: Comparative government and politics
classificationCode: 440899
subject: Political science not elsewhere classified

description: this is the online appendix for Chapter 4: Collegial versus Personal Parliaments in the edited book: Collegial Democracy versus Personal Democracy, edited by Gideon Rahat and Chen Friedberg (Routledge)it includes the questionnaire for the expert survey of which the data is deprived.
Online Appendix-Chapter 4. Collegial versus Personal Parliaments
Creators: name: zamir, shahaf
name: Friedman, Avital
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440803
subject: Comparative government and politics
classificationCode: 440899
subject: Political science not elsewhere classified

description: this is the online appendix for Chapter 4: Collegial versus Personal Parliaments in the edited book: Collegial Democracy versus Personal Democracy, edited by Gideon Rahat and Chen Friedberg (Routledge)it includes the questionnaire for the expert survey of which the data is deprived.