cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Asymptotics of stream-wise Reynolds stress in wall turbulence
Creators: name: Monkewitz, Peter A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The scaling of different features of stream-wise normal stress profiles $\langle uu\rangle^+(y^+)$ in turbulent wall-bounded flows, in particular in truly parallel flows, such as channel and pipe flows, is the subject of a long running debate. Particular points of contention are the scaling of the "inner" and "outer" peaks of $\langle uu\rangle^+$ at $y^+\approxeq 15$ and $y^+ =\mathcal{O}(10^3)$, respectively, their infinite Reynolds number limit, and the rate of logarithmic decay in the outer part of the flow. Inspired by the landmark paper of Chen and Sreenivasan (2021), two terms of the inner asymptotic expansion of $\langle uu\rangle^+$ in the small parameter $Re_τ^{-1/4}$ are extracted for the first time from a set of direct numerical simulations (DNS) of channel flow. This inner expansion is completed by a matching outer expansion, which not only fits the same set of channel DNS within 1.5\% of the peak stress, but also provides a good match of laboratory data in pipes and the near-wall part of boundary layers, up to the highest $Re_τ$'s of order $10^5$. The salient features of the new composite expansion are first, an inner $\langle uu\rangle^+$ peak, which saturates at 11.3 and decreases as $Re_τ^{-1/4}$, followed by a short "wall loglaw" with a slope that becomes positive for $Re_τ\gtrapprox 20'000$, leading up to an outer peak, and an outer logarithmic overlap with a negative slope continuously going to zero for $Re_τ\to\infty$.
description: 10 pages, 4 figures
A Survey on Bio-inspired Routing Algorithms in Wireless Sensor Network
Creators: name: Shivani S Bhasgi, Sujatha Terdal
Publisher: name: TuEngr Group
Year: 2021
Subjects: Bio-inspired algorithm
Wireless network
Artificial fish swarm optimization (ASFO)
Routing optimization
Routing algorithm
Optimization problem
ASFO technique.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 2, 12A2Q: 1-13
Socio-Economic Nonlinear Dynamics Processes for Forecast and Pre-Forecast Information Based on Time Series
Creators: name: Alfira Kumratova, Elena Popova
Publisher: name: TuEngr Group
Year: 2021
Subjects: Phase portrait
Dimensional rectangle
Phase analysis
Quasicycle
R/S analysis
Hurst exponent
Tourist flows.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 2, 12A2R: 1-9
A hybrid percolation transition at a finite transition point in scale-free networks
Creators: name: Choi, K.
name: Choi, Wonjun
name: Kahng, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: G.3; J.2
subject: 82-10

description: Percolation transition (PT) means the formation of a macroscopic-scale large cluster, which exhibits a continuous transition. However, when the growth of large clusters is globally suppressed, the type of PT is changed to a discontinuous transition for random networks. A question arises as to whether the type of PT is also changed for scale-free (SF) network, because the existence of hubs incites the formation of a giant cluster. Here, we apply a global suppression rule to the static model for SF networks, and investigate properties of the PT. We find that even for SF networks with the degree exponent $2 < λ<3$, a hybrid PT occurs at a finite transition point $t_c$, which we can control by the suppression strength. The order parameter jumps at $t_c^-$ and exhibits a critical behavior at $t_c^+$.
description: 9 pages, 9 figures, 2 tables
Der Olympiapark in München – ein „Gebrauchsgegenstand“ unter Denkmalschutz?
Creators: name: Bergande, Bettina
name: Schulze, Katrin
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
The Heritage of Sport in Rome and Its Conservation: Some Examples
Creators: name: Bellanca, Calogero
name: Mora, Susana
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Facing the Inevitable Change – Does Conservation Still Make Sense? The Case of the Helsinki Olympic Stadium
Creators: name: Salastie, Riitta
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Rückblick und Ausblick: Das Berliner Olympiastadion und Olympiagelände von 1936
Creators: name: Odenthal, Anna Maria
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
“Bringing the World to Los Angeles”: The Los Angeles Memorial Coliseum and the Rise of a Global City
Creators: name: Guridy, Frank Andre
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Aggregation of P-terphenyl along with PMMA/SA at the Langmuir and Langmuir-Blodgett Films
Creators: name: Hussain, Syed Arshad
name: Leeman, Hugo
name: Bhattacharjee, Debajyoti
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Molecular aggregation and monolayer characteristics of non-amphiphilic p-terphenyl (TP) mixed with either polymethyl methacrylate (PMMA) or stearic acid (SA) at the air-water interface were investigated. The miscibility of the two components was evaluated by measuring and analyzing surface pressure versus area per molecule (pi-A) isotherm. Both attractive and repulsive interactions between the sample (TP) and the matrix (PMMA or SA) were observed depending on the composition and microenvironment. TP and PMMA/SA were not completely miscible in the mixed monolayer. Aggregation and phase separation between sample TP and matrix molecule was revealed by UV-Vis absorption spectroscopic studies and confirmed by scanning electron micrograpgh of LB films.
description: 9 pages, 5 figures, 1 table
Montréal Olympic Park (1976). A Living Heritage (or the Rediscovery of an Unloved Giant that Hosted Heroic Moments)
Creators: name: Bumbaru, Dinu
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
Creators: name: Hu, Wayne
name: Sawicki, Ignacy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a class of metric-variation f(R) models that accelerates the expansion without a cosmological constant and satisfies both cosmological and solar-system tests in the small-field limit of the parameter space. Solar-system tests alone place only weak bounds on these models, since the additional scalar degree of freedom is locked to the high-curvature general-relativistic prediction across more than 25 orders of magnitude in density, out through the solar corona. This agreement requires that the galactic halo be of sufficient extent to maintain the galaxy at high curvature in the presence of the low-curvature cosmological background. If the galactic halo and local environment in f(R) models do not have substantially deeper potentials than expected in LCDM, then cosmological field amplitudes |f_R| > 10^{-6} will cause the galactic interior to evolve to low curvature during the acceleration epoch. Viability of large-deviation models therefore rests on the structure and evolution of the galactic halo, requiring cosmological simulations of f(R) models, and not directly on solar-system tests. Even small deviations that conservatively satisfy both galactic and solar-system constraints can still be tested by future, percent-level measurements of the linear power spectrum, while they remain undetectable to cosmological-distance measures. Although we illustrate these effects in a specific class of models, the requirements on f(R) are phrased in a nearly model-independent manner.
description: 13 pages, 10 figures. Submitted to Phys. Rev. D
Accelerating Neural Network Training with Distributed Asynchronous and Selective Optimization (DASO)
Creators: name: Coquelin, Daniel
name: Debus, Charlotte
name: Götz, Markus
name: von der Lehr, Fabrice
name: Kahn, James
name: Siggel, Martin
name: Streit, Achim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: With increasing data and model complexities, the time required to train neural networks has become prohibitively large. To address the exponential rise in training time, users are turning to data parallel neural networks (DPNN) to utilize large-scale distributed resources on computer clusters. Current DPNN approaches implement the network parameter updates by synchronizing and averaging gradients across all processes with blocking communication operations. This synchronization is the central algorithmic bottleneck. To combat this, we introduce the Distributed Asynchronous and Selective Optimization (DASO) method which leverages multi-GPU compute node architectures to accelerate network training. DASO uses a hierarchical and asynchronous communication scheme comprised of node-local and global networks while adjusting the global synchronization rate during the learning process. We show that DASO yields a reduction in training time of up to 34% on classical and state-of-the-art networks, as compared to other existing data parallel training methods.
1/Nc Expansion in QCD: Double-Line Counting Rules and the Undeservingly Discarded U(1) Ghost
Creators: name: Matevosyan, Hrayr H.
name: Thomas, Anthony W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The 1/Nc expansion is one of the very few methods we have for generating a systematic expansion of QCD at the energy scale relevant to hadron structure. The present formulation of this theory relies on the double-line notation for calculating the leading order of a diagram in the 1/Nc expansion, where the local SU(Nc) gauge symmetry is substituted by a U(Nc) symmetry and the associated U(1) ghost field is ignored. In the current work we demonstrate the insufficiency of this formulation for describing certain non-planar diagrams. We derive a more complete set of Feynman rules that include the U(1) ghost field and provide a useful tool for calculating both color factors and 1/Nc orders of all color-singlet diagrams.
Measurement of CP-Violating Asymmetries in B0->D(*)+D-
Creators: name: BaBar Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present updated measurements of \CP-violating asymmetries in the decays $\Bz\to\Dstarpm\Dmp$ and $\Bz\to\Dp\Dm$ using $(383\pm 4) \times 10^{6} \BB$ pairs collected by the \babar detector at the PEP-II $B$ factory. We determine the time-integrated \CP asymmetry ${\mathcal{A}}_{\Dstarpm\Dmp}=0.12\pm 0.06\pm 0.02$, and the time-dependent asymmetry parameters to be $C_{\Dstarp\Dm} =0.18\pm 0.15\pm 0.04$, $S_{\Dstarp\Dm}=-0.79\pm 0.21\pm 0.06$, $C_{\Dstarm\Dp} =0.23\pm 0.15\pm 0.04$, $S_{\Dstarm\Dp} =-0.44\pm 0.22\pm 0.06$, $C_{\Dp\Dm} =0.11\pm 0.22\pm 0.07$, and $S_{\Dp\Dm} =-0.54\pm 0.34\pm 0.06$, where the first uncertainty is statistical and the second is systematic.
description: Minor changes of the text and reference for the publication
Impacts of Operation Conditions on the Performance of the Fired Heater
Creators: name: Roaa Rashid Ali, Amjed Ahmed Ali
Publisher: name: TuEngr Group
Year: 2021
Subjects: Furnace optimization
HYSYS
Heat simulation
Furnance operation
Dynamic mode.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 2, 12A2S: 1-9
Frequency stability assessment of modern power systems: models definition and parameters identification
Creators: name: Conte, Francesco
name: Massucco, Stefano
name: Paolone, Mario
name: Schiapparelli, Giacomo-Piero
name: Silvestro, Federico
name: Zuo, Yihui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: One of the fundamental concerns in the operation of modern power systems is the assessment of their frequency stability in case of inertia-reduction induced by the large share of power electronic interfaced resources. Within this context, the paper proposes a framework that, by making use of linear models of the frequency response of different types of power plants, including also grid--forming and grid-following converters, is capable to infer a numerically tractable dynamical model to be used in frequency stability assessment. Furthermore, the proposed framework makes use of models defined in a way such that their parameters can be inferred from real-time measurements feeding a classical least squares estimator. The paper validates the proposed framework using a full-replica of the dynamical model of the IEEE 39 bus system simulated in a real-time platform.
Analysis of Issues on Human Resource Development in Astronomical Observatories
Creators: name: Khadijah Ismail, Mohd Hafiz Safiai
Publisher: name: TuEngr Group
Year: 2021
Subjects: Astrofiqh
Cosmofiqh
Human resource
Islamic astronomy
Science & technology
Observatory
Telescope
Falak.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 2, 12A2T: 1-10
Factors Causing Consumer Resistance to Innovation by Applying Resistance to Innovation Theory
Creators: name: Mazhar Abbas, Saliha Gul Abbasi
Publisher: name: TuEngr Group
Year: 2021
Subjects: Innovation resistance
Consumer behavior
Innovation characteristics
Product price
Consumer characteristics
Negative emotion
Consumer motivation, Complexity of product.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 2, 12A2U: 1-12
Inherited Weak Topological Insulator Signatures in Topological Hourglass Semimetal Nb3XTe6 (X = Si, Ge)
Creators: name: Wan, Q.
name: Yang, T. Y.
name: Li, S.
name: Yang, M.
name: Zhu, Z.
name: Wu, C. L.
name: Peng, C.
name: Mo, S. K.
name: Wu, W.
name: Chen, Z. H.
name: Huang, Y. B.
name: Lev, L. L.
name: Strocov, V. N.
name: Hu, J.
name: Mao, Z. Q.
name: Zheng, Hao
name: Jia, J. F.
name: Shi, Y. G.
name: Yang, Shengyuan A.
name: Xu, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using spin-resolved and angle-resolved photoemission spectroscopy and first-principles calculations, we have identified bulk band inversion and spin polarized surface state evolved from a weak topological insulator (TI) phase in van der Waals materials Nb3XTe6 (X = Si, Ge). The fingerprints of weak TI homologically emerge with hourglass fermions, as multi nodal chains composed by the same pair of valence and conduction bands gapped by spin orbit coupling. The novel topological state, with a pair of valence and conduction bands encoding both weak TI and hourglass semimetal nature, is essential and guaranteed by nonsymmorphic symmetry. It is distinct from TIs studied previously based on band inversions without symmetry protections.
description: 4 figures
Discovery of a New Dusty B[e] Star in the Small Magellanic Cloud
Creators: name: Wisniewski, John P.
name: Bjorkman, Karen S.
name: Bjorkman, Jon E.
name: Clampin, Mark
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new optical spectroscopic and archival Spitzer IRAC photometric observations of a B-type star in the SMC cluster NGC 346, NGC 346:KWBBe 200. We detect numerous Fe II, [O I], and [Fe II] lines, as well as strong P-Cygni profile H I emission lines in its optical spectrum. The star's near-IR color and optical to IR SED clearly indicate the presence of an infrared excess, consistent with the presence of gas and warm, T ~800 K, circumstellar dust. Based on a crude estimate of the star's luminosity and the observed spectroscopic line profile morphologies, we find that the star is likely to be a B-type supergiant. We suggest that NGC 346:KWBBe 200 is a newly discovered B[e] supergiant star, and represents the fifth such object to be identified in the SMC.
description: 12 pages, accepted by ApJ
Entwurf und Bauausführung der Olympiabauten, München 1972
Creators: name: Tomlow, Jos
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Monolayer Characteristics of Pyrene Mixed with Stearic Acid at the Air-Water Interface
Creators: name: Islam, Md. N.
name: Bhattacharjee, D.
name: Hussain, Syed Arshad
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the present communication we report the monolayer characteristics of pyrene mixed with stearic acid (SA) at the air-water interface. The monolayer properties are investigated by recording and analyzing the surface pressure-area per molecule isotherm (pi-A) of the pyrene-SA mixed films. It is observed that the pyrene and SA are miscible in the mixed monolayer. This miscibility/nonideality leads to phase separation between the constituent components (pyrene and SA). BAM image of the mixed monolayer confirms the miscibility or nonideal mixing at the mixed monolayer.
description: 6 pages, 4 figures, 1 table
SDN-Based Intrusion Detection System for Early Detection and Mitigation of DDoS Attacks
Creators: name: Manso, Pedro
name: Moura, Jose
name: Serrao, Carlos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The current paper addresses relevant network security vulnerabilities introduced by network devices within the emerging paradigm of Internet of Things (IoT) as well as the urgent need to mitigate the negative effects of some types of Distributed Denial of Service (DDoS) attacks that try to explore those security weaknesses. We design and implement a Software-Defined Intrusion Detection System (IDS) that reactively impairs the attacks at its origin, ensuring the normal operation of the network infrastructure. Our proposal includes an IDS that automatically detects several DDoS attacks, and then as an attack is detected, it notifies a Software Defined Networking (SDN) controller. The current proposal also downloads some convenient traffic forwarding decisions from the SDN controller to network devices. The evaluation results suggest that our proposal timely detects several types of cyber-attacks based on DDoS, mitigates their negative impacts on the network performance, and ensures the correct data delivery of normal traffic. Our work sheds light on the programming relevance over an abstracted view of the network infrastructure to timely detect a Botnet exploitation, mitigate malicious traffic at its source, and protect benign traffic.
description: Published in MDPI Information
S&P 500 Stock Price Prediction Using Technical, Fundamental and Text Data
Creators: name: Zhong, Shan
name: Hitchcock, David B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We summarized both common and novel predictive models used for stock price prediction and combined them with technical indices, fundamental characteristics and text-based sentiment data to predict S&P stock prices. A 66.18% accuracy in S&P 500 index directional prediction and 62.09% accuracy in individual stock directional prediction was achieved by combining different machine learning models such as Random Forest and LSTM together into state-of-the-art ensemble models. The data we use contains weekly historical prices, finance reports, and text information from news items associated with 518 different common stocks issued by current and former S&P 500 large-cap companies, from January 1, 2000 to December 31, 2019. Our study's innovation includes utilizing deep language models to categorize and infer financial news item sentiment; fusing different models containing different combinations of variables and stocks to jointly make predictions; and overcoming the insufficient data problem for machine learning models in time series by using data across different stocks.
description: 19 pages, 10 figures
The 19th Olympic Games Celebrated in Mexico in 1968 and their Architecture
Creators: name: Alanis, Enrique Xavier De Anda
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Improved Quantum Hard-Sphere Ground-State Equations of State
Creators: name: Solís, M. A.
name: de Llano, M.
name: Clark, J. W.
name: Baker, George A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The London ground-state energy formula as a function of number density for a system of identical boson hard spheres, corrected for the reduced mass of a pair of particles in a sphere-of-influence picture, and generalized to fermion hard-sphere systems with two and four intrinsic degrees of freedom, has a double-pole at the ultimate \textit{regular} (or periodic, e.g., face-centered-cubic) close-packing density usually associated with a crystalline branch. Improved fluid branches are contructed based upon exact, field-theoretic perturbation-theory low-density expansions for many-boson and many-fermion systems, appropriately extrapolated to intermediate densities, but whose ultimate density is irregular or \textit{random} closest close-packing as suggested in studies of a classical system of hard spheres. Results show substantially improved agreement with the best available Green-function Monte Carlo and diffusion Monte Carlo simulations for bosons, as well as with ladder, variational Fermi hypernetted chain, and so-called L-expansion data for two-component fermions.
description: 15 pages and 7 figures
Tokyo 1964–2020: The Olympic Sport Facilities of 1964 and their Roles at the Olympic Games in 2020 – With a Focus on the Work of Kenzo Tange
Creators: name: Kono, Toshiyuki
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Sprengmeister und Geisterspiele. Ein Streifzug durch Olympische Stadien von 1900 bis 2016
Creators: name: Skrentny, Werner
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Das architektonische Erbe Pierre de Coubertins – eine Spurensuche
Creators: name: Brandt, Sigrid
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Perturbation theory for anisotropic dielectric interfaces, and application to sub-pixel smoothing of discretized numerical methods
Creators: name: Kottke, Chris
name: Farjadpour, Ardavan
name: Johnson, Steven G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We derive a correct first-order perturbation theory in electromagnetism for cases where an interface between two anisotropic dielectric materials is slightly shifted. Most previous perturbative methods give incorrect results for this case, even to lowest order, because of the complicated discontinuous boundary conditions on the electric field at such an interface. Our final expression is simply a surface integral, over the material interface, of the continuous field components from the unperturbed structure. The derivation is based on a "localized" coordinate-transformation technique, which avoids both the problem of field discontinuities and the challenge of constructing an explicit coordinate transformation by taking a limit in which a coordinate perturbation is infinitesimally localized around the boundary. Not only is our result potentially useful in evaluating boundary perturbations, e.g. from fabrication imperfections, in highly anisotropic media such as many metamaterials, but it also has a direct application in numerical electromagnetism. In particular, we show how it leads to a sub-pixel smoothing scheme to ameliorate staircasing effects in discretized simulations of anisotropic media, in such a way as to greatly reduce the numerical errors compared to other proposed smoothing schemes.
description: 10 pages
Random changes of flow topology in two dimensional and geophysical turbulence
Creators: name: Bouchet, Freddy
name: Simonnet, Eric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study the two dimensional (2D) stochastic Navier Stokes (SNS) equations in the inertial limit of weak forcing and dissipation. The stationary measure is concentrated close to steady solutions of the 2D Euler equation. For such inertial flows, we prove that bifurcations in the flow topology occur either by changing the domain shape, the nonlinearity of the vorticity-stream function relation, or the energy. Associated to this, we observe in SNS bistable behavior with random changes from dipoles to unidirectional flows. The theoretical explanation being very general, we infer the existence of similar phenomena in experiments and in models of geophysical flows.
description: 4 pages, 3 figures
De la norme olympique au modèle architectural Les années pionnières des édifices sportifs (1894–1924)
Creators: name: Blay, Jean-Pierre
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Long-time stability of the quantum hydrodynamic system on irrational tori
Creators: name: Feola, Roberto
name: Iandoli, Felice
name: Murgante, Federico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the quantum hydrodynamic system on a $d$-dimensional irrational torus with $d=2,3$. We discuss the behaviour, over a "non trivial" time interval, of the $H^s$-Sobolev norms of solutions. More precisely we prove that, for generic irrational tori, the solutions, evolving from $\varepsilon$-small initial conditions, remain bounded in $H^s$ for a time scale of order $O(\varepsilon^{-1-1/(d-1)+})$, which is strictly larger with respect to the time-scale provided by local theory. We exploit a Madelung transformation to rewrite the system as a nonlinear Schrödinger equation. We therefore implement a Birkhoff normal form procedure involving small divisors arising from three waves interactions. The main difficulty is to control the loss of derivatives coming from the exchange of energy between high Fourier modes.This is due to the irrationality of the torus which prevent to have "good separation" properties of the eigenvalues of the linearized operator at zero. The main steps of the proof are: (i) to prove precise lower bounds on small divisors; (ii) to construct a modified energy by means of a suitable \emph{high/low} frequencies analysis, which gives an \emph{a priori} estimate on the solutions.
description: 21 pag
Olympische Stadtkronen – Der Beitrag von München 1972 zur modernen Sportarchitektur
Creators: name: Spieker, Elisabeth
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2021

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 76 (2020): ICOMOS – Hefte des Deutschen Nationalkomitees
Finite baryon and isospin chemical potential in AdS/CFT with flavor
Creators: name: Erdmenger, Johanna
name: Kaminski, Matthias
name: Kerner, Patrick
name: Rust, Felix
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the thermodynamics of a thermal field theory in presence of both a baryon and an isospin chemical potential. For this we consider a probe of several D7-branes embedded in the AdS-Schwarzschild black hole background. We determine the structure of the phase diagram and calculate the relevant thermodynamical quantities both in the canonical and in the grand canonical ensemble. We discuss how accidental symmetries present reflect themselves in the phase diagram: In the case of two flavors, for small densities, there is a rotational symmetry in the plane spanned by the baryon and isospin density which breaks down at large densities, leaving a Z_4-symmetry. Finally, we calculate vector mode spectral functions and determine their dependence on either the baryon or the isospin density. For large densities, a new excitation forms with energy below the known supersymmetric spectrum. Increasing the density further, this excitation becomes unstable. We speculate that this instability indicates a new phase of condensed mesons.
description: 62 pages, 32 figures. references and paragraph about non-Abelian DBI action added
Curved momentum space, locality, and generalized space-time
Creators: name: Carmona, José Manuel
name: Cortés, José Luis
name: Relancio, José Javier
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We establish the correspondence between two apparently unrelated but in fact complementary approaches of a relativistic deformed kinematics: the geometric properties of momentum space and the loss of absolute locality in canonical spacetime, which can be restored with the introduction of a generalized spacetime. This correspondence is made explicit for the case of $κ$-Poincaré kinematics and compared with its properties in the Hopf algebra framework.
description: 18 pages
ОПИСАТЕЛЬНАЯ ХАРАКТЕРИСТИКА ЛАРИНГОТРАХЕАЛЬНЫХ СТЕНОЗОВ
Creators: name: Шарипов, У.А.
Publisher: name: Zenodo
Year: 2025

description: Ларинготрахеальные стенозы (ЛТС) представляют собой группу заболеваний с поражением дыхательной трубки, с её сужением, тяжелая патология, которая затрагивает взрослых и детей. Он имеет множество причин и лечится разными способами. Интервенционные эндоскопические процедуры конкурируют с хирургическими подходами, и различные новые методы лечения в настоящее время проверяются на эффективность и безопасность. Нет многоцентровых исследований по описанию расширения дыхательных путей с описанием типа, места и степени сужения. Единая классификация отсутствует, существуют несколько классификаций, которые в той или иной мере характеризуют определенные стороны стенозы, однако они не имеют собирательный характер. Для характеристики хирургических подходов нами была поставлена цель провести описание существующих стенозов с различных аспектов, включая механизм их развития, причину, место расположения, её качественные структурные характеристики, степень сужения и ее продленность.
Solar large-scale magnetic field and cycle patterns in solar dynamo
Creators: name: Obridko, V. N.
name: Pipin, V. V.
name: Sokoloff, D. D.
name: Shibalova, A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We compare spectra of the zonal harmonics of the large-scale magnetic field of the Sun using observation results and solar dynamo models. The main solar activity cycle as recorded in these tracers is a much more complicated phenomenon than the eigen solution of solar dynamo equations with the growth saturated by a back reaction of the dynamo-driven magnetic field on solar hydrodynamics. The nominal 11(22)-year cycle as recorded in each mode has a specific phase shift varying from cycle to cycle; the actual length of the cycle varies from one cycle to another and from tracer to tracer. Both the observation and the dynamo model show an exceptional role of the axisymmetric $\ell_{5}$ mode. Its origin seems to be readily connected with the formation and evolution of sunspots on the solar surface. The results of observations and dynamo models show a good agreement for the low $\ell_{1}$ and $\ell_{3}$ modes. The results for these modes do not differ significantly for the axisymmetric and nonaxisymmetric models. Our findings support the idea that the sources of the solar dynamo arise as a result of both the distributed dynamo processes in the bulk of the convection zone and the surface magnetic activity.
description: 12 pages, 12 Figures, accepted in MNRAS
Extracting common signal components from the X-ray and optical light curves of GX 339-4: new view for anti-correlation
Creators: name: Omama, Tomoki
name: Uemura, Makoto
name: Ikeda, Shiro
name: Morii, Mikio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Simultaneous X-ray and optical observations of black hole X-ray binaries have shown that the light curves contain multiple correlated and anti-correlated variation components when the objects are in the hard state. In the case of the black hole X-ray binary, GX 339-4, the cross correlation function (CCF) of the light curves suggests a positive correlation with an optical lag of 0.15 s and anti-correlations with an optical lag of 1 s and X-ray lag of 4 s. This indicates the two light curves have some common signal components with different delays. In this study, we extracted and reconstructed those signal components from the data for GX 339-4. The results confirmed that correlation and anti-correlation with the optical lag are two common components. However, we found that the reconstructed light curve for the anti-correlated component indicates a positively correlated variation with an X-ray lag of ~ +1 s. In addition, the CCF for this signal component shows anti-correlations not only with the optical lag, but also with the X-ray lag, which is consistent with the CCF for the data. Therefore, our results suggest that the combination of the two positively correlated components, that is, the X-ray preceding signal with the 0.15-s optical lag and the optical preceding signal with the 1-s X-ray lag, can make the observed CCF without anti-correlated signals. The optical preceding signal may be caused by synchrotron emission in a magnetically dominated accretion flow or in a jet, while further study is required to understand the mechanism of the X-ray time lag.
title: Professional communication in the legal sphere
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐ¾Ð±Ð¸ÑÐµÐ²Ð°, ÐÐ»ÐµÐºÑÐ°Ð½Ð´ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½ÑÐ¹ ÑÐ·ÑÐº
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description: Ð£ÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²Ð»ÐµÐ½Ð¾ Ð² ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ð¸ Ñ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼Ð¸ ÑÐ°Ð±Ð¾ÑÐµÐ¹ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ Â«ÐÐ½Ð¾ÑÑÑÐ°Ð½Ð½ÑÐ¹ ÑÐ·ÑÐº (Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¸Ð¹) Ð² ÑÑÐµÑÐµ ÑÑÐ¸ÑÐ¿ÑÑÐ´ÐµÐ½ÑÐ¸Ð¸Â» Ð´Ð»Ñ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð², ÐºÐ¾ÑÐ¾ÑÐ°Ñ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐµÑ Ð³Ð»Ð°Ð²Ð½ÑÑ ÑÐµÐ»Ñ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ, ÐºÐ°Ðº ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾ Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ Ð¸Ð½Ð¾ÑÐ·ÑÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð²Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸, Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾Ð¹ Ð´Ð»Ñ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÐµÐ½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð¸ Ð½Ð°ÑÑÐ½Ð¾-Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð²ÑÐ¿ÑÑÐºÐ½Ð¸ÐºÐ°. Ð£ÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ Ð´Ð²ÐµÐ½Ð°Ð´ÑÐ°ÑÑ ÑÐ°Ð·Ð´ÐµÐ»Ð¾Ð² Ð´Ð»Ñ Ð°ÑÐ´Ð¸ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð¿Ð¾Ð´ ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ²Ð¾Ð¼ Ð¿ÑÐµÐ¿Ð¾Ð´Ð°Ð²Ð°ÑÐµÐ»Ñ, Ð² ÐºÐ¾ÑÐ¾ÑÑÐµ Ð²ÐºÐ»ÑÑÐµÐ½Ñ Ð·Ð°Ð´Ð°Ð½Ð¸Ñ Ð½Ð° Ð¾ÑÑÐ°Ð±Ð¾ÑÐºÑ ÑÐ¾Ð½ÐµÑÐ¸ÑÐµÑÐºÐ¸Ñ, Ð³ÑÐ°Ð¼Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¸ Ð»ÐµÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð½Ð°Ð²ÑÐºÐ¾Ð², ÑÐ²Ð»ÑÑÑÐ¸ÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð¾Ð¹ Ð»ÑÐ±Ð¾Ð¹ ÑÐµÑÐµÐ²Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸: Ð¿Ð¸ÑÑÐ¼Ð°, ÑÑÐµÐ½Ð¸Ñ, Ð°ÑÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð¿ÐµÑÐµÐ²Ð¾Ð´Ð° Ð¸ Ð³Ð¾Ð²Ð¾ÑÐµÐ½Ð¸Ñ.
Non-thermal emission from the reverse shock of the youngest galactic Supernova remnant G1.9+0.3
Creators: name: Brose, R.
name: Sushch, I.
name: Pohl, Martin
name: Luken, K. J.
name: Filipovic, M. D.
name: Lin, R.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: subject: 520

description: Context. The youngest Galactic supernova remnant G1.9+0.3 is an interesting target for next generation gamma-ray observatories. So far, the remnant is only detected in the radio and the X-ray bands, but its young age of ~100 yrs and inferred shock speed of ~14,000 km/s could make it an efficient particle accelerator. Aims. We aim to model the observed radio and X-ray spectra together with the morphology of the remnant. At the same time, we aim to estimate the gamma-ray flux from the source and evaluated the prospects of its detection with future gamma-ray experiments. Methods. We performed spherical symmetric 1-D simulations with the RATPaC code, in which we simultaneously solve the transport equation for cosmic rays, the transport equation for magnetic turbulence, and the hydro-dynamical equations for the gas flow. Separately computed distributions of the particles accelerated at the forward and the reverse shock are then used to calculate the spectra of synchrotron, inverse Compton, and pion-decay radiation from the source. Results. The emission from G1.9+0.3 can be self-consistently explained within the test-particle limit. We find that the X-ray flux is dominated by emission from the forward shock while most of the radio emission originates near the reverse shock, which makes G1.9+0.3 the first remnant with non-thermal radiation detected from the reverse shock. The flux of very-high-energy gamma-ray emission from G1.9+0.3 is expected to be close to the sensitivity threshold of the Cherenkov Telescope Array, CTA. The limited time available to grow large-scale turbulence limits the maximum energy of particles to values below 100 TeV, hence G1.9+0.3 is not a PeVatron.
Inducement of Spin-pairing and Correlated Semi-metallic State in Mott-Hubbard Quantum Dot Array
Creators: name: Goswami, Partha
name: Kapoor, Avinashi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We model a quantum dot-array (with one electron per dot) comprising of two (or more than two) coupled dots by an extended Hubbard Hamiltonian to investigate the role played by the inter-dot tunneling amplitude td, together with intra-dot (U) and inter-dot(U1) coulomb repulsions, in the singlet / triplet bound state formation and evolution of the system from the Mott-insulator-like state to a correlated semi-metallic state via charge-bond-order route. In the presence of magnetic field, td is complex due to the appearance of Peierls phase factor. We introduce a short-ranged inter-dot capacitive coupling U0, assumed to be non-zero for nearest-neighbor dots only, for the bound state analysis. The study indicates that, while for the tunable parameter d = (2td/U0) greater than unity only the possibility of the triplet bound state formation exists, for d less than one both triplet and singlet states are possible. The bound states are formed due to tunneling and capacitive dot-bondings with coulomb interactions (U,U1) playing marginal role. The interaction U, however, is found to play, together with complex td, an important role in the evolution of the double quantum dot system from the insulator-like state to that of a correlated semi-metallic state through charge-bond-ordering route.
description: 18 pages,4 figures
Generalized Kaehler Potentials from Supergravity
Creators: name: Halmagyi, Nick
name: Tomasiello, Alessandro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider supersymmetric N=2 solutions with non-vanishing NS three-form. Building on worldsheet results, we reduce the problem to a single generalized Monge-Ampere equation on the generalized Kaehler potential K recently interpreted geometrically by Lindstrom, Rocek, Von Unge and Zabzine. One input in the procedure is a holomorphic function w that can be thought of as the effective superpotential for a D3 brane probe. The procedure is hence likely to be useful for finding gravity duals to field theories with non-vanishing abelian superpotential, such as Leigh-Strassler theories. We indeed show that a purely NS precursor of the Lunin-Maldacena dual to the beta-deformed N=4 super-Yang-Mills falls in our class.
description: "38 pages. v3: improved exposition and minor mistakes corrected in sec. 4"
Coping behaviours in myocardial infarction rehabilitation
Creators: name: Dawson, Lynn Gail
Publisher: name: University of British Columbia
Year: 2010

description: This study was designed to discover the coping behaviours used by patients six to twelve months following a myocardial infarction (MI). The conceptualization of coping behaviours was based on the UBC Model for Nursing which directed the researcher to examine coping behaviours used to meet the patients' basic human needs. The specific research question was, "What new or already established coping behaviours have patients utilized after an MI in an attempt to satisfy their basic human needs?" Seven participants who had experienced an MI six to twelve months previously, were recruited from cardiologists. Data were collected from the participants during interviews using semi-structured open-ended questioning technique. Data were coded and analyzed using the constant comparative method developed by Glaser and Strauss. Three themes that emerged from the data were: 1) coping behaviours related to risk reduction, 2) coping behaviours related to returning to normal, 3) coping behaviours related to reaching a new normal. The findings supported the need for lifestyle changes involving the use of existing coping behaviours and/or the development of new coping behaviours to meet subjects' basic human needs. Certain unmet basic human needs were identified following an MI which required the development of new coping behaviours to meet them. Nurses are in a unique position to assist MI patients in developing coping behaviours to meet their basic human needs. The descriptions and explanations of coping behaviours identified in this study may serve as a useful guide for nurses to help patients deal with changes in their lives and develop necessary coping behaviours to meet their basic human needs.
Deflection of Slow Light by Magneto-Optically Controlled Atomic Media
Creators: name: Zhou, D. L.
name: Zhou, Lan
name: Wang, R. Q.
name: Yi, S.
name: Sun, C. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a semi-classical theory for light deflection by a coherent $Λ$-type three-level atomic medium in an inhomogeneous magnetic field or an inhomogeneous control laser. When the atomic energy levels (or the Rabi coupling by the control laser) are position-dependent due to the Zeeman effect by the inhomogeneous magnetic field (or the inhomogeneity of the control field profile), the spatial dependence of the refraction index of the atomic medium will result in an observable deflection of slow signal light when the electromagnetically induced transparency happens to avoid medium absorption. Our theoretical approach based on Fermat's principle in geometrical optics not only provides a consistent explanation for the most recent experiment in a straightforward way, but also predicts the new effects for the slow signal light deflection by the atomic media in an inhomogeneous off-resonant control laser field.
description: 4 pages, 3 figures
Spectroscopic characterizations of the mixed Langmuir-Blodgett (LB) films of 2,2'-biquinoline molecules: evidence of dimer formation
Creators: name: Deb, S.
name: Biswas, S.
name: Hussain, S. A.
name: Bhattacharjee, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This communication reports the -A isotherms and spectroscopic characterizations of mixed Langmuir and Langmuir-Blodgett (LB) films of nonamphiphilic 2, -biquinoline (BQ) molecules, mixed with polymethyl methacrylate (PMMA) and stearic acid (SA). The pi-A isotherms and molefraction versus area per molecule studies indicate complete immiscibility of sample (BQ) and matrix (PMMA or SA) molecules. This immiscibility may lead to the formation of microcrystalline aggregates of BQ molecules in the mixed LB films. The scanning electron micrograph gives the visual evidence of microcrystalline aggregates of BQ molecules in the mixed LB films. UV-Vis absorption, fluorescence and excitation spectroscopic studies reveal the nature of these microcrystalline aggregates. LB films lifted at higher surface pressure indicate the formation of dimer or higher order n-mers.
description: 21 pages, 5 figures