cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Uniform Polynomial Equations Providing Higher-order Multi-dimensional Models in Lattice Boltzmann Theory
Creators: name: Shim, Jae Wan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a set of polynomial equations that provides models of the lattice Boltzmann theory for any required level of accuracy and for any dimensional space in a general form. We explicitly derive two- and three-dimensional models applicable to describe thermal compressible flows of the level of the Navier-Stokes equations.
Experimental demonstration of phase-remapping attack in a practical quantum key distribution system
Creators: name: Xu, Feihu
name: Qi, Bing
name: Lo, Hoi-Kwong
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Unconditional security proofs of various quantum key distribution (QKD) protocols are built on idealized assumptions. One key assumption is: the sender (Alice) can prepare the required quantum states without errors. However, such an assumption may be violated in a practical QKD system. In this paper, we experimentally demonstrate a technically feasible "intercept-and-resend" attack that exploits such a security loophole in a commercial "plug & play" QKD system. The resulting quantum bit error rate is 19.7%, which is below the proven secure bound of 20.0% for the BB84 protocol. The attack we utilize is the phase-remapping attack (C.-H. F. Fung, et al., Phys. Rev. A, 75, 32314, 2007) proposed by our group.
description: 16 pages, 6 figures
Invariant Differential Operators for the Real Exceptional Lie Algebra $F'_4$
Creators: name: Dobrev, V. K.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In the present paper we continue the project of systematic construction of invariant differential operators on the example of the non-compact exceptional Lie algebra $F'_4=F_{4(4)}$ which is split real form of the exceptional Lie algebra $F_4$. We consider induction from a maximal parabolic algebra. We classify the reducible Verma modules over $F_4$ which are compatible with this induction. Thus, we obtain the classification of the corresponding invariant differential operators.
description: 12 pages, 1 figure, LaTex. arXiv admin note: text overlap with arXiv:2109.08395, arXiv:1903.11511
A manifestly gauge-invariant description of interaction of atomic systems with strong fields in the dipole approximation
Creators: name: Bechler, A.
name: Ślȩczka, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose a new type of gauge-invariant expansion of the ionization probability amplitudes of atoms by short pulses of electromagnetic radiation. Contrary to previous gauge-invariant approaches to this problem it does not require different partitions of the total Hamiltonian depending on the choice of gauge. In a natural way the atomic potential is treated as perturbation acting on an electron interacting with strong pulse. Whereas this is a standard assumption of strong field approximation (SFA), we show that grouping consequently together \textit{all} terms of the same order in the atomic potential results in the expansion of the amplitude which is gauge invariant \textit{order by order}, and not only in the limit of infinite series. In this approach, which is illustrated by numerical examples, the "direct ionization" and "rescattering" contributions are different from those commonly used in SFA - calculations.
description: 7 pages, 4 figures
Stationary Points for Parametric Stochastic Frontier Models
Creators: name: Horrace, William C.
name: Wright, Ian A.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Hematology

description: Stationary point results on the normal–half-normal stochastic frontier model are generalized using the theory of the Dirac delta, and distribution-free conditions are established to ensure a stationary point in the likelihood as the variance of the inefficiency distribution goes to zero. Stability of the stationary point and “wrong skew” results are derived or simulated for common parametric assumptions on the model. We discuss identification and extensions to more general stochastic frontier models.
DF2023: The Digital Forensics 2023 Dataset for Image Forgery Detection
Creators: name: Fischinger, David
name: Boyer, Martin
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The deliberate manipulation of public opinion, especially through altered images, which are frequently disseminated through online social networks, poses a significant danger to society. To fight this issue on a technical level we support the research community by releasing the Digital Forensics 2023 (DF2023) training and validation dataset, comprising one million images from four major forgery categories: splicing, copy-move, enhancement and removal. This dataset enables an objective comparison of network architectures and can significantly reduce the time and effort of researchers preparing datasets.
description: Published at the 25th Irish Machine Vision and Image Processing Conference (IMVIP) --- Proceedings: https://iprcs.github.io/pdf/IMVIP2023_Proceeding.pdf --- Dataset download: https://zenodo.org/records/7326540/files/DF2023_train.zip https://zenodo.org/records/7326540/files/DF2023_val.zip Kaggle: https://www.kaggle.com/datasets/davidfischinger/df2023-digital-forensics-2023-dataset/data
Local Parametric Estimation in High Frequency Data*
Creators: name: Potiron, Yoann
name: Mykland, Per
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: In this paper, we give a general time-varying parameter model, where the multidimensional parameter possibly includes jumps. The quantity of interest is defined as the integrated value over time of the parameter processΘ=T−1∫0Tθt*dt. We provide a local parametric estimator (LPE) of Θ and conditions under which we can show the central limit theorem. Roughly speaking those conditions correspond to some uniform limit theory in the parametric version of the problem. The framework is restricted to the specific convergence raten1/2. Several examples of LPE are studied: estimation of volatility, powers of volatility, volatility when incorporating trading information and time-varying MA(1).
The build-up of mass in UV-selected sub-L* galaxies at z~2
Creators: name: Sawicki, Marcin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Broadband spectral energy distribution (SED) fitting is used to study a deep sample of UV-selected sub-L* galaxies at z~2. They are found to be less dusty than L* galaxies, and to contribute more mass to the cosmic mass budget at this epoch than is inferred from shallower high-z surveys. Additionally, SFRs are found to be proportional to stellar masses over three orders of magnitude in mass; this phenomenon can be explained by assuming that new stars form out of gas that co-accretes along with dark matter onto the galaxies' dark matter halos, a scenario that naturally leads to SFRs that gradually increase with time.
description: Proceedings of "Tracing the Ancestry of Galaxies on the Land of our Ancestors", C. Carignan, K. Freeman & F. Combes, eds
How corporate social responsibility affects firms’ strategic decisions : examining links among corporate social responsibility, vertical integration, and new product introductions
Creators: name: Murcia, Maria Jose
Publisher: name: University of British Columbia
Year: 2018

description: Firms seek competitive advantages either through cost leadership or product differentiation strategies. Cost leadership may be achieved by shifting away from vertical integration (VI) to vertical de-integration through outsourcing that often results in significant cost and flexibility gains. Product differentiation can be achieved through new product introductions (NPI) that can help firm enter new markets and meet changing consumer needs. However, modern firms not only face pressure to be competitive, but also to be socially responsible. As firms increasingly incorporate corporate social responsibility (CSR) in their operations, a key question emerges about the effect of CSR on fundamental strategic decisions related to vertical integration (VI) and new product introductions (NPI). The primary aim of this thesis is to address this question. Toward that end, the thesis is divided into three main sections described below. First, it takes stock of the extant literature on VI, especially because this construct has grown in numerous disparate directions that has led not only to conceptual ambiguity, but also rendered a bewildering array of empirical findings. The first section of this thesis, therefore, synthesizes VI literature before analyzing the effect of CSR on VI. In contrast, NPI -the other construct used in this thesis- is relatively well understood and hence the NPI based empirical section does not need a theoretical precursor. The second section comprises an examination of the link between CSR and VI. Consistent with transaction costs economics theory, panel data regression results show that higher CSR performance is associated to higher VI. In other words, socially responsible firms tend to vertically integrate, i.e., outsource less. The third section comprises the analysis of the link between CSR engagement and NPI. In this section, I consider CSR as a multidimensional construct that bundles multiple and even dissimilar activities together. Drawing on the knowledge based view of the firm, panel data regression results show that while discretionary activities concerning environmental and social engagement (labeled as informal CSR) directly and positively affect the rate of NPI, compliance-oriented corporate governance activities (labeled as formal CSR) do not directly affect the rate of NPI.
Charged Lifshitz Black Holes
Creators: name: Dehghani, M. H.
name: Pourhasan, R.
name: Mann, R. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate modifications of the Lifshitz black hole solutions due to the presence of Maxwell charge in higher dimensions for arbitrary $z$ and any topology. We find that the behaviour of large black holes is insensitive to the topology of the solutions, whereas for small black holes significant differences emerge. We generalize a relation previously obtained for neutral Lifshitz black branes, and study more generally the thermodynamic relationship between energy, entropy, and chemical potential. We also consider the effect of Maxwell charge on the effective potential between objects in the dual theory.
description: Latex, 28 pages, 14 figures, some references added
Empirical likelihood for high frequency data
Creators: name: Camponovo, Lorenzo
name: Matsushita, Yukitoshi
name: Otsu, Taisuke
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: This paper introduces empirical likelihood methods for interval estimation and hypothesis testing on volatility measures in some high frequency data environments. We propose a modified empirical likelihood statistic that is asymptotically pivotal under infill asymptotics, where the number of high frequency observations in a fixed time interval increases to infinity. The proposed statistic is extended to be robust to the presence of jumps and microstructure noise. We also provide an empirical likelihood-based test to detect the presence of jumps. Furthermore, we study higher-order properties of a general family of nonparametric likelihood statistics and show that a particular statistic admits a Bartlett correction: a higher-order refinement to achieve better coverage or size properties. Simulation and a real data example illustrate the usefulness of our approach.
An investigation of how chronic pain has affected individuals' personally significant activities
Creators: name: Murray, John W.
Publisher: name: University of British Columbia
Year: 2018

description: The emergence of chronic pain is often a disruptive event across multiple dimensions of individuals’ lives. Several models have been suggested in efforts to identify mediating factors between pain and disability, as well as helpful psychological interventions. Much of this recent research has examined the efficacy of acceptance and commitment therapy (ACT). The current study used inductive thematic analysis to examine participant narratives of the effects of chronic pain on the personally significant activities of individuals living with chronic pain. Eight participants (5 female, 3 male) were interviewed using a combination of autobiographical lifelines and qualitative narrative interviews. Results of the analysis showed two main themes: Activity Loss and Interruption, and Activity Gain and Maintenance. There were 18 sub-themes gathered under Activity Loss and Interruption, and 17 sub-themes gathered under Activity Gain and Maintenance. These themes exhibited that participants experienced the effects of chronic pain across somatic, psychological, interpersonal, behavioural, and environmental domains. In turn, these effects either contributed directly or indirectly to the loss or interruption of their personally significant activities, or the participants expressed adaptive responses or facilitating environmental factors that helped them gain activities or maintain their current activity levels. The findings of this study subsumed the constructs of Psychological Flexibility (PF) and Psychological Inflexibility, pain catastrophizing, and self-efficacy, all of which were present in the lives of the participants in the context of living with chronic pain and experiencing its effects on their personally significant activities. Additionally, the findings showed how participants were able to engage behaviourally with activities even while expressing statements reflective ofiv Psychological Inflexibility. Finally, the findings also highlighted the importance of facilitating and inhibiting environmental factors, which are not currently accounted for in the ACT model of treatment for chronic pain. The clinical and research implication of these findings are discussed.
Type III and N Einstein spacetimes in higher dimensions: general properties
Creators: name: Ortaggio, Marcello
name: Pravda, Vojtech
name: Pravdova, Alena
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Sachs equations governing the evolution of the optical matrix of geodetic WANDs (Weyl aligned null directions) are explicitly solved in n-dimensions in several cases which are of interest in potential applications. This is then used to study Einstein spacetimes of type III and N in the higher dimensional Newman-Penrose formalism, considering both Kundt and expanding (possibly twisting) solutions. In particular, the general dependence of the metric and of the Weyl tensor on an affine parameter r is obtained in a closed form. This allows us to characterize the peeling behaviour of the Weyl "physical" components for large values of r, and thus to discuss, e.g., how the presence of twist affects polarization modes, and qualitative differences between four and higher dimensions. Further, the r-dependence of certain non-zero scalar curvature invariants of expanding spacetimes is used to demonstrate that curvature singularities may generically be present. As an illustration, several explicit type N/III spacetimes that solve Einstein's vacuum equations (with a possible cosmological constant) in higher dimensions are finally presented.
description: 19 pages
A new class of change point test statistics of Rényi type
Creators: name: Horváth, Lajos
name: Miller, Curtis
name: Rice, Gregory
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: A new class of change point test statistics is proposed that utilizes a weighting and trimming scheme for the cumulative sum (CUSUM) process inspired by Rényi (1953). A thorough asymptotic analysis and simulations both demonstrate that this new class of statistics possess superior power compared to traditional change point statistics based on the CUSUM process when the change point is near the beginning or end of the sample. Generalizations of these “Rényi” statistics are also developed to test for changes in the parameters in linear and non-linear regression models, and in generalized method of moments estimation. In these contexts we applied the proposed statistics, as well as several others, to test for changes in the coefficients of Fama-French factor models. We observed that the Rényi statistic was the most effective in terms of retrospectively detecting change points that occur near the endpoints of the sample.
Automatic determination of the different control mechanisms in upright position by a wavelet method
Creators: name: Bertrand, Pierre R.
name: Bardet, Jean-Marc
name: Dabonneville, Michel
name: Mouzat, A.
name: Vaslin, Philippe
Publisher: name: arXiv
Year: 2025
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: A recent model to analyze the Center of Pressure trajectories is based on the fractional Brownian motion. By doing so, one note that standing still is describe by different mechanisms following the frequency. Previous studies exhibit the existence of a control mechanism which stabilize the upright position at a large enough time scales (from 0.3 s to 1.2 s depending on the method and on the authors) or equivalently at low frequencies. The different mechanisms are separated by a critical time scale or equivalently a critical frequency. This critical frequency is fundamental to understand the control mechanism of upright position : only physiological phenomenon at frequencies larger than this critical frequency could contribute to the task of maintaining equilibrium. A new statistical method is introduced based onto the recent progress in signal processing : the wavelets analysis. The algorithm is entirely automatic. Seventeen healthy young subjects were studied under quiet-standing conditions, the mean value of critical frequency is 1.8 Hz corresponding to a mean critical time scale 0.68 s. The algorithm is entirely automatic.
Heterogeneity and Unemployment Dynamics
Creators: name: Ahn, Hie Joo
name: Hamilton, James D.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Many previous articles have studied the contribution of inflows and outflows to the cyclical variation in unemployment, but ignored the critical role of unobserved heterogeneity across workers. This article develops new estimates of unemployment inflows and outflows that allow for unobserved heterogeneity as well as direct effects of unemployment duration on unemployment-exit probabilities. With this approach, we can measure the contribution of different shocks to the short-run, medium-run, and long-run variance of unemployment as well as to specific historical episodes. We conclude that changes in the composition of new inflows into unemployment are the most important factor in economic recessions.
`Deterministic' quantum plasmonics
Creators: name: Cuche, Aurélien
name: Mollet, Oriane
name: Drezet, Aurélien
name: Huant, Serge
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate `deterministic' launching of propagative quantum surface-plasmon polaritons at freely chosen positions on gold plasmonic receptacles. This is achieved by using as plasmon launcher a near-field scanning optical source made of a diamond nanocrystal with two Nitrogen-Vacancy color-center occupancy. Our demonstration relies on leakage-radiation microscopy of a thin homogeneous gold film and on near-field optical microscopy of a nanostructured thick gold film. Our work paves the way to future fundamental studies and applications in quantum plasmonics that require an accurate positioning of single-plasmon sources and may open a new branch in plasmonics and nanophotonics, namely scanning quantum plasmonics.
description: Published in nanoletters: Nano Lett., 2010, 10 (11), pp 4566-4570 Publication Date (Web): October 21, 2010 Copyright \c{opyright} 2010 American Chemical Society
Sign retrieval in spaces of variable bandwidth
Creators: name: Jaming, Philippe
name: Perez, Rolando
Publisher: name: arXiv
Year: 2025
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: The aim of this paper is to get a deeper understanding of the spaces of variable bandwidth introduced by Gr{ö}chenig and Klotz (What is variable bandwidth? Comm. Pure Appl. Math., 70 (2017), 2039-2083). In particular, we show that when the variation of the bandwidth is modeled by a step function with a finite number of jumps, then, the sign retrieval principle applies.
Turbulent spectra and spectral kinks in the transition range from MHD to kinetic Alfvén turbulence
Creators: name: Voitenko, Yuriy
name: De Keyser, Johan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A weakly dispersive sub-range (WDR) of kinetic Alfvén turbulence is distinguished and investigated for the first time in the context of MHD/kinetic turbulence transition. We found perpendicular wavenumber spectra ~ k^{-3} and ~ k^{-4} formed in WDR by strong and weak turbulence of kinetic Alfvén waves (KAWs), respectively. These steep WDR spectra connect shallower spectra in the MHD and strongly dispersive KAW sub-ranges, which results in a specific double-kink (2-k) pattern often seen in observed turbulent spectra. The first kink occurs where MHD turbulence transforms into weakly dispersive KAW turbulence; the second one is between weakly and strongly dispersive KAW sub-ranges. Our analysis suggests that the partial turbulence dissipation due to amplitude-dependent super-adiabatic ion heating may occur in the vicinity of the first spectral kink. A threshold-like nature of this process results in a conditional selective dissipation affecting only largest over-threshold amplitudes and decreasing intermittency in the range below the first spectral kink. Several recent counter-intuitive observational findings can be explained by the selective dissipation coupled to the nonlinear interaction among weakly dispersive KAWs.
description: 11 pages, 3 figures
กลยุทธ์การบริหารการจัดการเรียนรู้ของสถานศึกษาสังกัดสำนักงานการศึกษา นอกระบบและการศึกษาตามอัธยาศัยจังหวัดนครสวรรค์ตามหลักอิทธิบาท 4
Creators: name: อุเทน ฮ้อสิทธิสมบูรณ์
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: กลยุทธ์การบริหาร
การจัดการเรียนรู้
สถานศึกษา
หลักอิทธิบาท 4

description: The Journal of Research and Academics, 6, 3, 241-256
High resolution stopwatch for cents
Creators: name: Gingl, Zoltan
name: Kopasz, Katalin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Physics Education (physics.ed-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A very low-cost, easy-to-make stopwatch is presented to support various experiments in mechanics. The high-resolution stopwatch is based on two photodetectors connected directly to the microphone input of the sound card. A dedicated free open-source software has been developed and made available to download. The efficiency is demonstrated by a free fall experiment.
Hidden Yangian symmetry in sigma model on squashed sphere
Creators: name: Kawaguchi, Io
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss a hidden symmetry of a two-dimensional sigma model on a squashed S^3. The SU(2) current can be improved so that it can be regarded as a flat connection. Then we can obtain an infinite number of conserved non-local charges and show the Yangian algebra by directly checking the Serre relation. This symmetry is also deduced from the coset structure of the squashed sphere. The same argument is applicable to the warped AdS_3 spaces via double Wick rotations.
description: 11 pages, 1 figure, typos corrected, references added
Phase retrieval for solutions of the Schr{ö}dinger equations
Creators: name: Jaming, Philippe
Publisher: name: arXiv
Year: 2025
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this note we present several questions about the phase retrieval problem for the Schr{ö}dinger equation. Some partial answers are given as well as some of the heuristics behind these questions.
การพัฒนาผลิตภัณฑ์ชุมชนเพื่อส่งเสริมการท่องเที่ยว อำเภอเนินมะปราง จังหวัดพิษณุโลก
Creators: name: ณัฏยาณี บุญทองคำ
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: การท่องเที่ยว
การพัฒนา
ผลิตภัณฑ์ชุมชน

description: The Journal of Research and Academics, 6, 3, 257-276
Comparing parallel and simulated tempering enhanced sampling algorithms at phase transition regimes
Creators: name: Fiore, Carlos E.
name: da Luz, M. G. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Two important enhanced sampling algorithms, simulated (ST) and parallel (PT) tempering, are commonly used when ergodic simulations may be hard to achieve, e.g, due to a phase space separated by large free-energy barriers. This is so for systems around first-order phase transitions, a case still not fully explored with such approaches in the literature. In this contribution we make a comparative study between the PT and ST for the Ising (a lattice-gas in the fluid language) and the BEG (a lattice-gas with vacancies) models at phase transition regimes. We show that although the two methods are equivalent in the limit of sufficiently long simulations, the PT is more advantageous than the ST with respect to all the analysis performed: convergence towards the stationarity; frequency of tunneling between phases at the coexistence; and decay of time-displaced correlation functions of thermodynamic quantities. Qualitative arguments for why one may expect better results from the PT than the ST near phase transitions conditions are also presented.
Estimation and Selection of Spatial Weight Matrix in a Spatial Lag Model
Creators: name: Lam, Clifford
name: Souza, Pedro C.L.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Spatial econometric models allow for interactions among variables through the specification of a spatial weight matrix. Practitioners often face the risk of misspecification of such a matrix. In many problems a number of potential specifications exist, such as geographic distances, or various economic quantities among variables. We propose estimating the best linear combination of these specifications, added with a potentially sparse adjustment matrix. The coefficients in the linear combination, together with the sparse adjustment matrix, are subjected to variable selection through the adaptive least absolute shrinkage and selection operator (LASSO). As a special case, if no spatial weight matrices are specified, the sparse adjustment matrix becomes a sparse spatial weight matrix estimator of our model. Our method can therefore, be seen as a unified framework for the estimation and selection of a spatial weight matrix. The rate of convergence of all proposed estimators are determined when the number of time series variables can grow faster than the number of time points for data, while oracle properties for all penalized estimators are presented. Simulations and an application to stocks data confirms the good performance of our procedure.
The crystal and magnetic structure of the magnetocaloric compound FeMnP0.5Si0.5
Creators: name: Höglin, Viktor
name: Hudl, Matthias
name: Sahlberg, Martin
name: Nordblad, Per
name: Beran, Premysl
name: Andersson, Yvonne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The crystal and magnetic structure of the magnetocaloric compound FeMnP0.5Si0.5 have been studied by means of neutron and X-ray powder diffraction. Single phase samples of nominal composition FeMnP0.5Si0.5 have been prepared by the drop synthesis method. The compound crystallizes in the Fe2P-type structure (P-62m) with the magnetic moments aligned along the aaxis. It is found that the Fe atoms are mainly situated in the tetrahedral 3g site while the Mn atoms prefer the pyramidal 3f position. The material is ferromagnetic (TC = 382 K) and at 296 K the total magnetic moment is 4.4 μB/f.u. It is shown that the magnetic moment in the 3f site is larger (2.5 μB) than in the 3g site (1.9 μB).
description: 8 pages, 4 figures
การศึกษาปัญหาการใช้งานพื้นที่ภายในอาคารเรียนสาขาวิชาภาพพิมพ์ วิทยาลัยช่างศิลป สถาบันบัณฑิตพัฒนศิลป์ กรุงเทพมหานคร จากมุมมองของผู้ใช้อาคาร
Creators: name: อันนาลิน สังข์ศิริ
Publisher: name: บัณฑิตศึกษา สถาบันบัณฑิตพัฒนศิลป์ กระทรวงวัฒนธรรม
Year: 2023
Subjects: ปัญหาการใช้งานพื้นที่ภายใน
การประเมินอาคารหลังการใช้งาน
ความพึงพอใจ
อาคารเรียนภาพพิมพ์

description: วิพิธพัฒนศิลป์, 3, 1, 1-20
ภาวะผู้นำของผู้หญิงแต่ละวัฒนธรรมในศตวรรษที่ 21
Creators: name: ชุติมา สุดจรรยา
Publisher: name: บัณฑิตศึกษา สถาบันบัณฑิตพัฒนศิลป์ กระทรวงวัฒนธรรม
Year: 2023
Subjects: ภาวะผู้นำหญิง
เอกลักษณ์ทางวัฒนธรรม
ความท้าทายในศตวรรษที่ 21

description: วิพิธพัฒนศิลป์, 3, 1, 21-39
VHE Gamma-Ray Induced Pair Cascades in Blazars and Radio Galaxies: Application to NGC 1275
Creators: name: Sh., Parisa Roustazadeh
name: Boettcher, Markus
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recent blazar detections by HESS, MAGIC, and VERITAS suggest that very-high-energy (VHE, E > 100 GeV) gamma-rays may be produced in most, if not all, types of blazars, including those that possess intense circumnuclear radiation fields. In this paper, we investigate the interaction of nuclear VHE gamma-rays with the circumnuclear radiation fields through gamma-gamma absorption and pair production, and the subsequent Compton-supported pair cascades. We have developed a Monte-Carlo code to follow the spatial development of the cascade in full 3-dimensional geometry, and calculate the radiative output due to the cascade as a function of viewing angle with respect to the primary VHE gamma-ray beam (presumably the jet axis of the blazar). We show that even for relatively weak magnetic fields, the cascades can be efficiently isotropized, leading to substantial off-axis cascade emission peaking in the Fermi energy range at detectable levels for nearby radio galaxies. We demonstrate that this scenario can explain the Fermi flux and spectrum of the radio galaxy NGC 1275.
description: Accepted for publication in The Astrophysical Journal
การสืบทอดและความคลี่คลายของนาฏกรรมราชสำนักไทยในพม่า
Creators: name: ธัชกร นันทรัตนชัย
Publisher: name: บัณฑิตศึกษา สถาบันบัณฑิตพัฒนศิลป์ กระทรวงวัฒนธรรม
Year: 2023
Subjects: โยเดีย
นาฏกรรมไทยในพม่า
นาฏกรรมพม่า

description: วิพิธพัฒนศิลป์, 3, 1, 40-54
Low- and high-level visual perception in adults with autism spectrum disorder
Creators: name: Shafai, Fakhri
Publisher: name: University of British Columbia
Year: 2018

description: Descriptions of atypical visual processing have been associated with Autism Spectrum Disorder (ASD). Pinpointing the source of altered perception has been challenging. It is possible that the divergence occurs early in visual processing. There have been reports of higher prevalence of refractive errors for children with ASD, but few studies assessing refractive error status of adults on the spectrum. We contribute to this gap by providing complete optometric eye exams to assess refractive status in a group of adults with ASD and Controls. We find no significant differences between our ASD and Control groups for presence or severity of refractive errors, but higher rates of myopia for both groups compared to prevalence in the general population. Results from behavioural studies suggest altered visual functioning may occur further downstream, possibly in the earliest cortical visual areas. The Enhanced Perceptual Functioning (EPF) model proposes that behavioural results can be explained as a consequence of superior perception for “simple visual material”. This model suggests that low-level properties of images may be processed differently in ASD. We examine this assertion for aspects of orientation processing, which is associated with low-level perception. In three behavioural psychophysical tasks, we examine the status of orientation discrimination, veridical perception, and orientation detection in adults with and without ASD. We find no significant differences between our ASD and Control groups for any aspect of orientation perception tested. As social difficulties are a criterion for diagnosis of ASD, various aspects of face processing have been studied in this population, with mixed results. The social motivation hypothesis and amygdala dysfunction hypothesis both suggest face processing abilities may be associated with social competency difficulties in ASD. We examine two different aspects of face processing: identification and recognition of expression, and compare performance to measures of ASD symptom severity and social competence. We find impaired identity and expression perception across all tasks for our ASD group, but only expression processing was associated with social competence. These results have implications for our understanding of visual perception differences in ASD and offer recommendations for future research directions and intervention tools.
Stall force of polymerizing microtubules and filament bundles
Creators: name: Krawczyk, Jaroslaw
name: Kierfeld, Jan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We investigate stall force and polymerization kinetics of rigid protofilaments in a microtubule or interacting filaments in bundles under an external load force in the framework of a discrete growth model. We introduce the concecpt of polymerization cycles to describe the stochastic growth kinetics, which allows us to derive an exact expression for the stall force. We find that the stall force is independent of ensemble geometry and load distribution. Furthermore, the stall force is proportional to the number of filaments and increases linearly with the strength of lateral filament interactions. These results are corroborated by simulations, which also show a strong influence of ensemble geometry on growth kinetics below the stall force.
description: 6 pages
Comparison of covariant and orthogonal Lyapunov vectors
Creators: name: Yang, Hong-liu
name: Radons, Günter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Two sets of vectors, covariant and orthogonal Lyapunov vectors (CLVs/OLVs), are currently used to characterize the linear stability of chaotic systems. A comparison is made to show their similarity and difference, especially with respect to the influence on hydrodynamic Lyapunov modes (HLMs). Our numerical simulations show that in both Hamiltonian and dissipative systems HLMs formerly detected via OLVs survive if CLVs are used instead. Moreover the previous classification of two universality classes works for CLVs as well, i.e. the dispersion relation is linear for Hamiltonian systems and quadratic for dissipative systems respectively. The significance of HLMs changes in different ways for Hamiltonian and dissipative systems with the replacement of OLVs by CLVs. For general dissipative systems with nonhyperbolic dynamics the long wave length structure in Lyapunov vectors corresponding to near-zero Lyapunov exponents is strongly reduced if CLVs are used instead, whereas for highly hyperbolic dissipative systems the significance of HLMs is nearly identical for CLVs and OLVs. In contrast the HLM significance of Hamiltonian systems is always comparable for CLVs and OLVs irrespective of hyperbolicity. We also find that in Hamiltonian systems different symmetry relations between conjugate pairs are observed for CLVs and OLVs. Especially, CLVs in a conjugate pair are statistically indistinguishable in consequence of the micro- reversibility of Hamiltonian systems. Transformation properties of Lyapunov exponents, CLVs and hyperbolicity under changes of coordinate are discussed in appendices.
Exes and why Z? Some charming and beautiful observations
Creators: name: van Beveren, Eef
name: Rupp, George
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Threshold enhancements like the X(4660) and depletion effects as the X(4260) are listed as c-cbar resonances in the Particle Data Group tables. We will discuss these observations, and present a list of further c-cbar enhancements, which are more likely to represent true vector charmonium excitations. We will furthermore discuss the importance of the observed Z resonances, viz. Z(4050), Z(4250), and Z(4430), for the family of charm-strange mesons. Another piece of very important information that can be extracted from the present data is the universal, flavor independent frequency of 190 MeV for mesons, due to the quark-antiquark oscillations within the glue environment. Finally, we will show hints from the data at a further flavor-independent quantity, having a value of 76 +-2 MeV, the origin of which is not yet understood. Talk available at http://cft.fis.uc.pt/eef/Frascati2010start.htm
description: plain LaTeX, 6 pages, 2 figures
การใช้โน้ตร่วมเพื่อสร้างสรรค์การประสานเสียงในดนตรีสมัยนิยม
Creators: name: ธีรเดช แพร่คุณธรรม
Publisher: name: บัณฑิตศึกษา สถาบันบัณฑิตพัฒนศิลป์ กระทรวงวัฒนธรรม
Year: 2023
Subjects: โน้ตร่วม
การประสานเสียงในดนตรีสมัยนิยม
ดนตรีสมัยนิยม

description: วิพิธพัฒนศิลป์, 3, 1, 55-71
The motion of whips and chains
Creators: name: Preston, Stephen C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the motion of an inextensible string (a whip) fixed at one point in the absence of gravity, satisfying the equations $$ η_{tt} = \partial_s(ση_s), \qquad σ_{ss}-\lvert η_{ss}\rvert^2 = -\lvert η_{st}\rvert^2, \qquad \lvert η_s\rvert^2 \equiv 1 $$ with boundary conditions $η(t,1)=0$ and $σ(t,0)=0$. We prove local existence and uniqueness in the space defined by the weighted Sobolev energy $$ \sum_{\ell=0}^m \int_0^1 s^{\ell} \lvert \partial_s^{\ell}η_t\rvert^2 \, ds + \int_0^1 s^{\ell+1} \lvert \partial_s^{\ell+1}η\rvert^2 \, ds, $$ when $m\ge 3$. In addition we show persistence of smooth solutions as long as the energy for $m=3$ remains bounded. We do this via the method of lines, approximating with a discrete system of coupled pendula (a chain) for which the same estimates hold.
description: 47 pages, 8 figures
Linear independence measures for values of certain q-series
Creators: name: Rochev, Igor
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11J72, 11J82

description: We prove, in a quantitative form, linear independence results for values of a certain class of q-series, which generalize classical q-hypergeometric series. These results refine our recent estimates.
description: 11 pages
The Creation of Abstract Paintings Inspired from Nature by Yarn Embroidery Process
Creators: name: Chutima Promdecha
Publisher: name: บัณฑิตศึกษา สถาบันบัณฑิตพัฒนศิลป์ กระทรวงวัฒนธรรม
Year: 2023
Subjects: abstract art
embroidery
punch needle

description: วิพิธพัฒนศิลป์, 3, 1, 72-93
Study of a Narrow pi+ pi- Peak at about 755 MeV/c**2 in pbar n --> 2 pi+ 3 pi- Annihilation at Rest
Creators: name: Gaspero, Mario
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A narrow peak in the pi+ pi- mass distribution was seen by the Rome-Syracuse Collaboration in pbar n --> 2 pi+ 3 pi- annihilation at rest in 1970. It was ignored for 40 years. The reanalysis of this peak finds that it has the mass 757.4 +- 2.8_stat +- 1.1_sys MeV/c**2 and a width consistent with the experimental resolution. The evidence of the peak is 5.2 standard deviations. The peak is generated in (1.03 +- 0.21_stat +- 0.21_sys)% of the pbar n annihilations at rest. No spin analysis is possible with the statistics of the experiment but there are arguments suggesting that it has JP = 0+.
description: 8 pages, 3 figures, talk given at the 13.th International Conference on Hadron Spectroscopy, Tallahassee, FL, USA, November 29 - December 4, 2009. Superseeds arXiv:0902.1126 [hep-ex].
The Vital Role of Machine Learning in Developing Advanced and Emerging Technologies
Creators: name: Amrouch, Hussam
Publisher: name: Zenodo
Year: 2021
Subjects: Machine Lerning
Emerging Technologies

description: In this talk, we demonstrate how Machine Learning (ML) approaches can play a major role when it comes to developing emerging technologies that go beyond the existing CMOS technology. As an example of such emerging technologies, we focus on the Negative Capacitance Field-Effect Transistor (NC-FET) technology, which is rapidly evolving and attracting a significant attention from both industry and academia. The vital role that machine learning will play stems from overcoming the following key challenges. (1) The secrecy of foundries with respect to their new transistor compact models and standard cell information, (2) The difficulties in creating mature physics-based models for emerging technologies especially at the early stages of the development cycle, and (3) accelerating the Design-Technology Co-Optimization (DTCO) process especially in the area of design-for-reliability for advanced sub-10nm technology nodes.
Science drivers and requirements for an Advanced Technology Large Aperture Space Telescope (ATLAST): Implications for technology development and synergies with other future facilities
Creators: name: Postman, Marc
name: Brown, Tom
name: Sembach, Kenneth
name: Giavalisco, Mauro
name: Traub, Wesley
name: Stapelfeldt, Karl
name: Calzetti, Daniela
name: Oegerle, William
name: Rich, R. Michael
name: Stahl, H. Phillip
name: Tumlinson, Jason
name: Mountain, Matt
name: Soummer, Rémi
name: Hyde, Tupper
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Advanced Technology Large-Aperture Space Telescope (ATLAST) is a concept for an 8-meter to 16-meter UVOIR space observatory for launch in the 2025-2030 era. ATLAST will allow astronomers to answer fundamental questions at the forefront of modern astronphysics, including "Is there life elsewhere in the Galaxy?" We present a range of science drivers that define the main performance requirements for ATLAST (8 to 16 milliarcsec angular resolution, diffraction limited imaging at 0.5 μm wavelength, minimum collecting area of 45 square meters, high sensitivity to light wavelengths from 0.1 μm to 2.4 μm, high stability in wavefront sensing and control). We will also discuss the synergy between ATLAST and other anticipated future facilities (e.g., TMT, EELT, ALMA) and the priorities for technology development that will enable the construction for a cost that is comparable to current generation observatory-class space missions.
description: 12 pages, 4 figures, to appear in "Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave," edited by Jacobus M. Oschmann Jr., Mark C. Clampin, Howard A. MacEwen, Proc. of SPIE, Vol. 7731, 77312K
Ophidia: High Performance Data Analytics framework for Climate Change at scale
Creators: name: Elia, Donatello
Publisher: name: Zenodo
Year: 2021

description: Presentation about "Ophidia: High Performance Data Analytics framework for Climate Change at scale" given by D. Elia at the "IS-ENES3 Virtual workshop on requirements for a fast and scalable evaluation workflow", 19 May 2021
Casimir interactions in graphene systems
Creators: name: Sernelius, Bo E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The non-retarded Casimir interaction (van der Waals interaction) between two free standing graphene sheets as well as between a graphene sheet and a substrate is determined. An exact analytical expression is given for the dielectric function of graphene along the imaginary frequency axis within the random phase approximation for arbitrary frequency, wave vector, and doping.
description: 4 pages, 4 figures