cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
QKD from a microsatellite: the SOTA experience
Creators: name: Carrasco-Casado, Alberto
name: Takenaka, Hideki
name: Fujiwara, Mikio
name: Kitamura, Mitsuo
name: Sasaki, Masahide
name: Toyoshima, Morio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The transmission and reception of polarized quantum-limited signals from space is of capital interest for a variety of fundamental-physics experiments and quantum-communication protocols. Specifically, Quantum Key Distribution (QKD) deals with the problem of distributing unconditionally-secure cryptographic keys between two parties. Enabling this technology from space is a critical step for developing a truly-secure global communication network. The National Institute of Information and Communications Technology (NICT, Japan) performed the first successful measurement on the ground of a quantum-limited signal from a satellite in experiments carried out on early August in 2016. The SOTA (Small Optical TrAnsponder) lasercom terminal onboard the LEO satellite SOCRATES (Space Optical Communications Research Advanced Technology Satellite) was utilized for this purpose. Two non-orthogonally polarized signals in the ~800-nm band and modulated at 10 MHz were transmitted by SOTA and received in the single-photon regime by using a 1-m Cassegrain telescope on a ground station located in an urban area of Tokyo (Japan). In these experiments, after compensating the Doppler effect induced by the fast motion of the satellite, a QKD-enabling QBER (Quantum Bit Error Rate) below 5% was measured with estimated key rates in the order of several Kbit/s, proving the feasibility of quantum communications in a real scenario from space for the first time.
description: 10 pages, 14 figures
Step Patterns on Vicinal Reconstructed Surfaces
Creators: name: Vilfan, Igor
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Step patterns on vicinal $(2\times1)$ reconstructed surfaces of noble metals Au(110) and Pt(110), miscut towards the (100) orientation, are investigated. The free energy of the reconstructed surface with a network of crossing opposite steps is calculated in the strong chirality regime when the steps cannot make overhangs. It is explained why the steps are not perpendicular to the direction of the miscut but form in equilibrium a network of crossing steps which make the surface to look like a fish skin. The network formation is the consequence of competition between the -- predominantly elastic -- energy loss and entropy gain. It is in agreement with recent scanning-tunnelling-microscopy observations on vicinal Au(110) and Pt(110) surfaces.
description: 11 pages with 5 eps figures in text. Uses psfig and elsart.sty (ELSEVIER Science). To be published in Surf. Sci
HPV Article Content Validity.pdf
Creators: name: S, Sudha Rani
name: A, Raja
name: N, Balasubramanian
Publisher: name: figshare
Year: 2021
Subjects: subject: 111002 Clinical Nursing: Primary (Preventative)
subject: FOS: Health sciences

description: Introduction: The significant stage in research is the construction of the tool. Validity is the initial stepin standardization of the tool. Content validity is the subjective agreement of professional experts thatthe content of the scale logically appears to accurately reflect what it is intended to measure. This articleelaborates the significance and sequential steps of content validity.Materials and Methods: The knowledge questionnaire on HPV infections, HPV vaccinations and cervicalcancers is a newly developed tool by the authors. It is a part of larger study. Eight experts have been selectedpurposively after their consent. The experts were in the field of Nursing and OBG medicine. Based on theexperts opinion content value index (CVI) and content validity ratio (CVR) was computed.Results: The computed value of content validity index is found to be anexcellent in both item interval andscale interval. Content value ratio of the computed value is one. Hence, all the items has not been changedand kept as it is for further process. This findings show that this knowledge questionnaire shows acceptablevalidity.Conclusion: This structured knowledge questionnaire isa significant tool in medical, nursing and healthsciences. It is mandatory to compute reliability for the further use. In this article, content validity procedurewas explained in detail which will be useful for the researchers in future.
Winding Angle Distributions for Random Walks and Flux Lines
Creators: name: Drossel, Barbara
name: Kardar, Mehran
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study analytically and numerically the winding of a flux line around a columnar defect. Reflecting and absorbing boundary conditions apply to marginal or repulsive defects, respectively. In both cases, the winding angle distribution decays exponentially for large angles, with a decay constant depending only on the boundary condition, but not on microscopic features. New {\it non-universal} distributions are encountered for {\it chiral} defects which preferentially twist the flux line in one direction. The resulting asymmetric distributions have decay constants that depend on the degree of chirality. In particular, strong chirality encourages entanglements and leads to broad distributions. We also examine the windings of flux lines in the presence of point impurities (random bonds). Our results suggest that pinning to impurities reduces entanglements, leading to a narrow (Gaussian) distribution.
description: 12 pages Revtex and 9 postscript figures
Chiral Symmetry Breaking in the Nambu-Jona-Lasinio Model in External Constant Electromagnetic Field
Creators: name: Babansky, A. Yu.
name: Gorbar, E. V.
name: Shchepanyuk, G. V.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dynamical chiral symmetry breaking (D$χ$SB) is studied in the Nambu-Jona-Lasinio model for an arbitrary combination of external constant electric and magnetic fields. In 3+1 dimensions it is shown that the critical coupling constant increases with increasing of the value of the second invariant of electromagentic field $\vec{E}\cdot\vec{B}$, i.e. the second invariant inhibits $DχSB$. The case of 2+1 dimensions is simpler because there is only one Lorentz invariant of electromagnetic field and any combination of constant fields can be reduced to cases either purely magnetic or purely electric field.
description: final version which will appear in Physics Letters B, we show that the second invariant of electromagnetic field inhibits D$\chi$SB. 11 pages. LaTeX. 2 figures included
Reconfigurable Photonic Circuit for Controlled Power Delivery to Laser-Driven Accelerators on a Chip
Creators: name: Hughes, Tyler W.
name: England, R. Joel
name: Fan, Shanhui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Accelerator Physics (physics.acc-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Dielectric laser acceleration (DLA) represents a promising approach to building miniature particle accelerators on a chip. However, similar to conventional RF accelerators, an automatic and reconfigurable control mechanism is needed to scale DLA technology towards high energy gains and practical applications. We present a system providing control of the laser coupling to DLA using integrated optics and introduce a novel component for power distribution using a reconfigurable mesh of Mach-Zehnder interferometers. We show how such a mesh may be sequentially and efficiently tuned to optimize power distribution in the circuit and find that this strategy has favorable scaling properties with respect to size of the mesh.
description: 10 pages, 6 Figures
Many-body theory of pump-probe spectra for highly excited semiconductors
Creators: name: Inagaki, T. J.
name: Iida, T.
name: Aihara, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a unified theory for pump-probe spectra in highly excited semiconductors, which is applicable throughout the whole density regime including the high-density electron-hole BCS state and the low-density excitonic Bose-Einstein condensate (BEC). The analysis is based on the BCS-like pairing theory combined with the Bethe-Salpeter (BS) equation, which first enables us to incorporate the state-filling effect, the band-gap renormalization and the strong/weak electron-hole pair correlations in a unified manner. We show that the electron-hole BCS state is distinctly stabilized by the intense pump-light, and this result strongly suggests that the macroscopic quantum state can be observed under the strong photoexcitation. The calculated spectra considerably deviate from results given by the BCS-like mean field theory and the simple BS equation without electron-hole pair correlation especially in the intermediate density states between the electron-hole BCS state and the excitonic BEC state. In particular, we find the sharp stimulated emission and absorption lines which originate from the optical transition accompanied by the collective phase fluctuation mode in the electron-hole BCS state. From the pump-probe spectral viewpoint, we show that this fluctuation mode changes to the exciton mode with decreasing carrier density
description: RevTeX 11 pages, 10 figures. To appear in Phys.Rev.B15
Anomalous behaviour of S/N mesoscopic structures near T_c
Creators: name: Shapira, S.
name: Linfield, E. H.
name: Lambert, C. J.
name: Seviour, R.
name: Volkov, A. F.
name: Zaitsev, A. V.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We observe a maximum in the conductance of Aluminum / n-GaAs junctions at temperatures 20 mK lower than the superconducting transition temperature. This is the first observation of a non- monotonic behavior of the conductance near the superconducting transition in superconducting normal junctions. To accommodate this effect we calculate the full temperature dependence of the conductance of these structures, invoking quasiclassical Green's functions in the diffusive limit. In addition to the well-known low temperature peak at temperatures on the order of the Thouless energy, we find a maximum near the critical temperature. This peak has the same origin as the subgap conductance observed in superconducting-normal junctions at low temperatures. Its calculated magnitude and position are in good agreement with our experimental observation.
description: 4 pages, 4 figures. To be published in PRL. Resubmission contains minor changes in line with refferee's recomendations
Phenomenological prediction of the properties of the B_{C} system
Creators: name: Fulcher, Lewis P.
Publisher: name: arXiv
Year: 1998
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: We present a comprehensive calculation of the energies, splittings and electromagnetic decay rates of the bottom charmed meson system. Our calculated result for the ground state lifetime is 0.38 \pm 0.03 ps, in good agreement with the recent CDF measurement. In order to incorporate running coupling constant effects, we choose Richardson's potential for the central potential and take the spin-dependent potentials from the radiative one-loop expressions of Pantaleone, Tye and Ng. The effects of a nonperturbative spin-orbit potential are also included. Our parameters are determined from the low-lying levels of the upsilon system (avg. dev. of 4.3 MeV) and charmonium (avg. dev. of 19.9 MeV). We carry out detailed comparison with the earlier work of Eichten and Quigg and lattice calculations. Our predicted result for the ground state energy is 6286_{-6}^{+15} MeV. Our results are generally in agreement with the earlier calculations. However, we find the two lowest 1^{+} states to be very close to the j-j limit, in agreement with the NRQCD lattice calculations, but at odds with many of the earlier phenomenological calculations. The implications of this finding for the photon spectra of the 1P and 2S states are discussed in some detail. Some strategies for the observation of these states are discussed, and a table of their cascades to the ground state are presented.
description: 14 pages Revtex plus 4 postscript figures, now includes calculation of ground state decay rate and justification for use of perturbation theory with contact potentials
Temperature dependence of the electron chemical potential in YBa2Cu3O
Creators: name: Dotsenko, A. V.
name: Sushkov, O. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the behaviour of the electronic chemical potential in YBa2Cu3O near the superconducting transition using the spin-wave exchange theory of pairing. We find that the experimental value of the jump in the temperature derivative of the chemical potential is inconsistent with the theoretical value calculated under the assumption of constant hole concentration. It is suggested that charge transfer between chains and planes takes place and corresponding calculations are done.
description: 8 pages, REVTeX 3.0, PostScript figures. (Minor revisions made.)
Order 1/N corrections to the time-dependent Hartree approximation for a system of N+1 oscillators
Creators: name: Mihaila, Bogdan
name: Dawson, John F.
name: Cooper, Fred
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We solve numerically to order 1/N the time evolution of a quantum dynamical system of N oscillators of mass m coupled quadratically to a massless dynamic variable. We use Schwinger's closed time path (CTP) formalism to derive the equations. We compare two methods which differ by terms of order 1/N^2. The first method is a direct perturbation theory in 1/N using the path integral. The second solves exactly the theory defined by the effective action to order 1/N. We compare the results of both methods as a function of N. At N=1, where we expect the expansion to be quite innacurate, we compare our results to an exact numerical solution of the Schroedinger equation. In this case we find that when the two methods disagree they also diverge from the exact answer. We also find at N=1 that the 1/N corrected evolutions track the exact answer for the expectation values much longer than the mean field (N= \infty) result.
description: 14 pages, 11 figures. Submitted to Phys. Rev. D
Anaticola anseris
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Anaticola
Anaticola anseris

description: Anaticola anseris (Linnaeus, 1758)
 Pediculus anseris Linnaeus, 1758: 612. Nomen novum for “Pollini dell oca reale Redi, 1668.
 Esthiopterum anseris Linnaeus, 1758 [sic]; Harrison 1916: 130.
 Anaticola anseris (Linnaeus, 1758); Clay & Hopkins 1950: 239, figs 18–21; pl. 2: fig. 1.
 Anaticola anseris (Linnaeus, 1758); Hopkins & Clay 1952: 31.
 Anaticola anseris (Linnaeus, 1758); Price et al. 2003: 142.
 Anaticola anseris (Linnaeus, 1758); González-Acuña et al. 2009: 182.
Neotype ♂ in NHML (see Clay & Hopkins 1950: 239).
 Type host: Anser anser (Linnaeus, 1758).
 Chilean host: Anser anser domesticus (Linnaeus, 1758).
 Other hosts: Anser brachyrhynchus Baillon, 1834; Anser caerulescens (Linnaeus, 1758); Anser canagicus (Sevastianov, 1802); Anser fabalis (Latham, 1787); Anser indicus (Latham, 1787); Branta canadensis (Linnaeus, 1758); Branta leucopsis (Bechstein, 1803); Branta sandvicensis (Vigors, 1803).
Chilean locality: Bulnes: Region XVI.
Geographic distribution: All continents, except Antarctica.
 Chilean reference: González-Acuña et al. (2009).
 Other significant references: Clay & Hopkins (1950); Price et al. (2003).
 Remarks: Anaticola anseris was introduced to Chile and other countries by human agency with domestic geese.
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 47, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Ambient Effects on Photogating in MoS2 Photodetectors
Creators: name: Han, Peize
name: Adler, Eli
name: Liu, Yijing
name: Marie, Luke St.
name: Fatimy, Abdel El
name: Melis, Scott
name: Van Keuren, Edward
name: Barbara, Paola
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Atomically thin transition metal dichalcogenides (TMDs) are ideal candidates for ultrathin optoelectronics that is flexible and semitransparent. Photodetectors based on TMDs show remarkable performance, with responsivity and detectivity higher than 10^3 A/W and 10^12 Jones, respectively, but they are plagued by response times as slow as several tens of seconds. Although it is well established that gas adsorbates such as water and oxygen create charge traps and significantly increase both the responsivity and the response time, the underlying mechanism is still unclear. Here we study the influence of adsorbates on MoS2 photodetectors under ambient conditions, vacuum and illumination at different wavelengths. We show that, for wavelengths sufficiently short to excite electron-hole pairs in the MoS2, light illumination causes desorption of water and oxygen molecules. The change in the molecular gating provided by the physisorbed molecules is the dominant contribution to the device photoresponse in ambient conditions.
First- and second-order transitions of the escape rate in ferrimagnetic or antiferromagnetic particles
Creators: name: Kim, Gwang-Hee
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum-classical escape-rate transition has been studied for two general forms of magnetic anisotropy in ferrimagnetic or antiferromagnetic particles. It is found that the range of the first-order transition is greatly reduced as the system becomes ferrimagnetic and there is no first-order transition in almost compensated antiferromagnetic particles. These features can be tested experimentally in nanomagnets like molecular magnets.
description: 11 pages, 3 figures, to appear in Europhys. Lett
Electron Bessel beam diffraction for precise and accurate nanoscale strain mapping
Creators: name: Guzzinati, Giulio
name: Ghielens, Wannes
name: Mahr, Christoph
name: Béché, Armand
name: Rosenauer, Andreas
name: Calders, Toon
name: Verbeeck, Jo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Strain has a strong effect on the properties of materials and the performance of electronic devices. Their ever shrinking size translates into a constant demand for accurate and precise measurement methods with very high spatial resolution. In this regard, transmission electron microscopes are key instruments thanks to their ability to map strain with sub-nanometer resolution. Here we present a novel method to measure strain at the nanometer scale based on the diffraction of electron Bessel beams. We demonstrate that our method offers a strain sensitivity better than $2.5 \cdot 10^{-4}$ and an accuracy of $1.5 \cdot 10^{-3}$, competing with, or outperforming, the best existing methods with a simple and easy to use experimental setup.
description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 114, 243501 (2019) and may be found at https://aip.scitation.org/doi/abs/10.1063/1.5096245 Data available at: https://doi.org/10.5281/zenodo.2566137 and code available at: https://bitbucket.org/lutosensis/tem-thesis/src
title: Design of a Dual-Frequency Patch Antenna for Small Satellites
Creators: name: LOVASCIO, A.
name: GRANDE, M.
name: D'ORAZIO, A.
name: CENTONZE, V.
Publisher: name: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. Madrid, Spain, 1-4 july 2019
Year: 2019
Subjects: DESIGN
MODELLING
SIMULATION
STRUCTURES

description: In recent years, we are witnessing an exponential growth in the use of small satellites that are extremely attractive from cost reduction point of view because of their small size. However, small size makes complicated installing two antennas at different operating frequencies, especially if the frequencies have high frequency ratios (S- and X- band). In this paper, we report the design of a dualfrequency patch antenna that exploits shorting pins to optimize the frequency ratio. The effect of presence of the metal pins on antenna performance has been analyzed showing the correlation between their geometry placement and impedance matching.
Der chinesische Bankensektor im Zeichen des WTO-Beitritts - Reformrückstände und Herausforderungen
Creators: name: Huang, Daiwei
Publisher: name: Universität Bremen
Year: 2002
Subjects: subject: -
subject: 330

description: Die vorliegende Arbeit hat den chinesischen Bankensektor vor dem Hintergrund des WTO-Beitritts des Landes untersucht. Sie zeigt, dass sich der chinesische Bankensektor - gemessen sowohl an der internen Transformation als auch an der externen Liberalisierung - nur schlecht auf die WTO-Mitgliedschaft vorbereitet hat und daher mit großen Herausforderungen in der Zeit nach dem WTO-Betritt konfrontieren wird.
title: Drag and Entropy Variables
Creators: name: LOZANO RODRIGUEZ, Carlos
Publisher: name: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. Madrid, Spain, 1-4 july 2019
Year: 2019
Subjects: CFD
NUMERICAL SIMULATION

description: Aerodynamic drag can be approximated by the entropy flux across fluid domain boundaries with a formula due to Oswatitsch. The adjoint solution that corresponds to this representation of the drag is investigated. For subcritical flows, the resulting adjoint variables are identical to the entropy variables, while for shocked flows there is a significant difference that is explicitly demonstrated with analytic solutions in the quasi-1D case. The approach is also investigated for 2D and 3D flows, where the adjoint equations and boundary conditions are derived. The approach is applied to mesh adaptation, performing comparably to the conventional near-field drag adjoint approach.
Holographic superconductor with nonlinear Born - Infeld-type electrodynamics
Creators: name: Kruglov, S. I.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Holographic s-wave superconductors in the framework of nonlinear Born - Infeld-type electrodynamics is investigated in the background of Schwarzschild anti-de Sitter black holes. As particular cases, at some model parameters, we obtain results for Born - Infeld and exponential electrodynamics. We explore the analytical Sturm-Liouville eigenvalue problem in the probe limit where the scalar and electromagnetic fields do not effect on the background metric. The critical temperatures of phase transitions and the order parameter are calculated which depend on the model parameters. We show that the critical exponent near the critical temperature is 1/2. Making use of the matching method we derive analytical expressions for the condensation values and the critical temperature. The conductivity by the analytical method is calculated.
description: 22 pages, 6 figures
Classifying quantum data by dissipation
Creators: name: Marshall, Jeffrey
name: Venuti, Lorenzo Campos
name: Zanardi, Paolo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate a general class of dissipative quantum circuit capable of computing arbitrary Conjunctive Normal Form (CNF) Boolean formulas. In particular, the clauses in a CNF formula define a local generator of Markovian quantum dynamics which acts on a network of qubits. Fixed points of this dynamical system encode the evaluation of the CNF formula. The structure of the corresponding quantum map partitions the Hilbert space into sectors, according to decoherence-free subspaces (DFSs) associated with the dissipative dynamics. These sectors then provide a natural and consistent way to classify quantum data (i.e. quantum states). Indeed, the attractive fixed points of the network allow one to learn the sector(s) for which some particular quantum state is associated. We show how this structure can be used to dissipatively prepare quantum states (e.g. entangled states), and outline how it may be used to generalize certain classical computational learning tasks.
description: 13 pages, 4 figures. v2: added clarifying comments and discussions throughout, additional error bound [Eq. (17)] and definition (4), added new examples section (III B)
Taming the Penguin in the B0(t) -> Pi+Pi- CP-asymmetry: Observables and Minimal Theoretical Input
Creators: name: Charles, Jérôme
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Penguin contributions, being not negligible in general, can hide the information on the CKM angle alpha coming from the measurement of the time-dependent B0(t) -> pi+pi- CP-asymmetry. Nevertheless, we show that this information can be summarized in a set of simple equations, expressing alpha as a multi-valued function of a single theoretically unknown parameter, which conveniently can be chosen as a well-defined ratio of penguin to tree amplitudes. Using these exact analytic expressions, free of any assumption besides the Standard Model, and some reasonable hypotheses to constrain the modulus of the penguin amplitude, we derive several new upper bounds on the penguin-induced shift |2alpha-2alpha_eff|, generalizing the recent result of Grossman and Quinn. These bounds depend on the averaged branching ratios of some decays (pi0pi0, K0K0bar, K+-pi-+) particularly sensitive to the penguin. On the other hand, with further and less conservative approximations, we show that the knowledge of the B+- -> Kpi+- branching ratio alone gives sufficient information to extract the free parameter without the need of other measurements, and without knowing |V_td| or |V_ub|. More generally, knowing the modulus of the penguin amplitude with an accuracy of ~30% might result in an extraction of alpha competitive with the experimentally more difficult isospin analysis. We also show that our framework allows to recover most of the previous approaches in a transparent and simple way, and in some cases to improve them. In addition we discuss in detail the problem of the various kinds of discrete ambiguities.
description: LaTeX2e, 44 pages, 9 figures (from 18 postscript files) included with epsf. Minor changes, references updated. New CLEO results from ICHEP'98 are taken into account. To appear in Phys. Rev. D
title: Experimental and Theoretical Analysis of the Combustion Efficiency and the Heat Loads on a N2O/C2H4 Green Propellant Combustion Chamber
Creators: name: WERLING, Lukas
name: HORGER, Till
name: CIEZKI, Helmut
name: SCHLECHTRIEM, Stefan
Publisher: name: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. Madrid, Spain, 1-4 july 2019
Year: 2019
Subjects: SPACE PROPULSION
HEAT TRANSFER
COMBUSTION CHAMBERS
LIQUID ROCKET ENGINES
NEW FUELS

description: Currently several green propellants as substitute for the highly toxic hydrazine are under investigation. A possible alternative are so called nitrous oxide fuel blends. This paper presents the results of combustion tests conducted with a premixed monopropellant consisting of N2 O and C2 H4 . In four test series the influence of the mixture ratio, the chamber pressure, the chamber length and the mass flux on the combustion efficiency and on the heat flux is analyzed and discussed. Furthermore four empirical Nusselt correlations derived by Bartz, Cinjarew, Dittus-Boelter and Gnielinski are compared to the experimental results and finally modified to improve their accuracy.
Influence of typical environments on quantum processes
Creators: name: Ao, Ping
name: Grundberg, Staffan
name: Rammer, Jørgen
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present the results of studying the influence of different environmental states on the coherence of quantum processes. We choose to discuss a simple model which describe two electronic reservoirs connected through tunneling via a resonant state. The model could, e.g., serve as an idealization of inelastic resonant tunneling through a double barrier structure. We develop Schwinger's closed time path formulation of non-equilibrium quantum statistical mechanics, and show that the influence of the environment on a coherent quantum process can be described by the value of a generating functional at a specific force value, thereby allowing for a unified discussion of destruction of phase coherence by various environmental states: thermal state, classical noise, time dependent classical field, and a coherent state. The model allows an extensive discussion of the influence of dissipation on the coherent quantum process, and expressions for the transmission coefficient are obtained in the possible limits.
description: 46 pages, 11 post script figures. Accepted for publication in Physical Review B
Anaticola marginellus
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Anaticola
Anaticola marginellus

description: Anaticola marginellus (Piaget, 1885)
 Lipeurus marginellus Piaget, 1885: 67, pl. 7: fig. 4.
 Esthiopterum marginellum Piaget, 1885 [sic]; Harrison1916: 138.
 Anaticola marginellus (Piaget, 1885); Hopkins & Clay 1952: 33.
 Anaticola marginellus (Piaget, 1885); Eichler & Vasjukova 1980: 351, pl. 26: figs 87–89.
 Anaticola marginella [sic] (Piaget, 1885); Price et al. 2003: 143.
 Anaticola marginella [sic] (Piaget, 1885); González-Acuña et al. 2005: 88.
 Syntypes ♂ ♀ in NHML (see Shchedrina et al. 2017).
 Type host: Chloephaga picta leucoptera (Gmelin, 1789).
 Chilean host: Chloephaga picta picta (Gmelin, 1789).
 Other host: Chloephaga melanoptera (Eyton, 1838).
Chilean locality: Río Verde: Region XII.
Geographic distribution: Southern South America.
 Chilean reference: González-Acuña et al. (2005).
 Other significant references: Eichler & Vasjukova (1980); Price et al. (2003).
 Remarks: Chloephaga melanoptera is a new host record for Anaticola marginellus based on samples from Perú held in NHML (Shchedrina et al. 2017).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 48, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Research and Implementation of Face Expression Recognition Algorithm Based on Deep Learning
Creators: name: He, Shiyu
Publisher: name: Zenodo
Year: 2025
Subjects: Facial Expression Recognition
Convolutional Neural Networks (CNN)
Emotion Recognition
Model Optimization

description: With the continuous development of deep learning technology, facial expression recognition (FER) has made significant progress. Unlike traditional FER methods that rely on manually crafted features, deep learning enables models to automatically learn discriminative features from large-scale datasets, effectively reducing the influence of environmental noise. This study focuses on facial expression recognition using deep learning techniques, specifically by constructing a convolutional neural network (CNN) model. Techniques such as data augmentation and model optimization are employed to enhance performance. The model is trained and evaluated on large-scale facial expression datasets to accurately recognize emotions in complex scenarios. Experimental results demonstrate that the proposed deep learning-based approach outperforms traditional methods in terms of robustness and recognition accuracy. This work not only advances facial expression recognition but also provides a valuable reference for future research in affective computing and human-computer interaction.
title: Characterization of miniature Hall thruster plume in the 50 - 200 W power range
Creators: name: MAZOUFFRE, S.
name: HALLOUIN, T.
name: INCHINGOLO, M.
name: GURCIULLO, A.
name: LASCOMBES, P.
name: MARIA, J.-L.
Publisher: name: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. Madrid, Spain, 1-4 july 2019
Year: 2019
Subjects: ELECTRIC PROPULSION

description: After a brief introduction to micropropulsion devices for small spacecraft and low-power Hall thruster performances in terms of thrust and specific impulse, this study focuses on plasma plume properties. The plume of the 100 W-class ISCT100-v2 Hall thruster has been characterized with two types of electrostatic probes. The ion current was measured with a Faraday cup while the ion energy was determined using a 4-grid RPA. Angular distributions of ion current density and ion EDF recorded in the plume far-field for several thruster parameters are presented and commented. Besides, direct thrust measurements performed with a micro-balance are compared to thrust values inferred from plume data.
On the tautological ring of $\M _g$
Creators: name: Looijenga, Eduard
Publisher: name: arXiv
Year: 1995
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We prove among other things that any product of tautological classes of $\M_g$ of degree $d$ (in the Chow ring of $\M _g$ with rational coefficients) vanishes for $d>g-2$ and is proportional to the class of the hyperelliptic locus in degree $g-2$.
description: 6 pages, amstex 2.1
Removing Discrete Ambiguities in CP Asymmetry Measurements
Creators: name: Grossman, Yuval
name: Quinn, Helen R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss methods to resolve the ambiguities in CP violating phase angles $ϕ$ that are left when a measurement of $\sin 2 ϕ$ is made. We show what knowledge of hadronic quantities will be needed to fully resolve all such ambiguities.
description: 23 pages, revtex, no figures
Relativistic second order dissipative hydrodynamics from effective fugacity quasi particle model
Creators: name: Mitra, Sukanya
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work a second order relativistic viscous hydrodynamic model has been presented based on the effective fugacity quasi-particle model (EQPM). The hydro model has been derived from the effective relativistic second-order transport equation under EQPM for a multi-particle (two component) system and solving it in Grad's 14 moment method. The EQPM model describes the strongly interacting thermal system of QCD interactions through its fugacity parameters extracted from an updated lattice equations of state. The proper time evolution of temperature and pressure anisotropy is observed to be affected significantly due to the inclusion of EQPM model compared to an ideal system.
description: Accepted in Physical Review D
Mapping Navigation Instructions to Continuous Control Actions with Position-Visitation Prediction
Creators: name: Blukis, Valts
name: Misra, Dipendra
name: Knepper, Ross A.
name: Artzi, Yoav
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We propose an approach for mapping natural language instructions and raw observations to continuous control of a quadcopter drone. Our model predicts interpretable position-visitation distributions indicating where the agent should go during execution and where it should stop, and uses the predicted distributions to select the actions to execute. This two-step model decomposition allows for simple and efficient training using a combination of supervised learning and imitation learning. We evaluate our approach with a realistic drone simulator, and demonstrate absolute task-completion accuracy improvements of 16.85% over two state-of-the-art instruction-following methods.
description: Appeared in Conference on Robot Learning 2018
Transforming the Construction Landscape: A Literature Review on Prefabrication Advancements from Indian Perspectives
Creators: name: Dr.Surathu Teja Venkata Narayana
Publisher: name: Zenodo
Year: 2024

description: The construction industry is undergoing a paradigm shift with the increasing adoption of prefabrication techniques worldwide. This paper presents a comprehensive literature review focusing on the advancements and perspectives of prefabrication within the Indian construction landscape. Beginning with an introduction to the concept of prefabrication and its significance in modern construction practices, the paper delves into the historical evolution of prefabrication techniques and their relevance in the contemporary context. Current trends and technological advancements in prefabrication are explored, with a particular emphasis on their application in the Indian construction industry. Challenges associated with the adoption and implementation of prefabrication methods in India are discussed, encompassing factors such as regulatory frameworks, infrastructural limitations, and cultural barriers. Furthermore, the paper examines the economic, environmental, and social impacts of prefabrication within the Indian context, highlighting both the opportunities and challenges posed by this innovative construction approach. Case studies and best practices from prefabricated construction projects in India are presented to provide insights into successful implementation strategies and lessons learned.
A Monte Carlo Method for Fermion Systems Coupled with Classical Degrees of Freedom
Creators: name: Motome, Yukitoshi
name: Furukawa, Nobuo
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A new Monte Carlo method is proposed for fermion systems interacting with classical degrees of freedom. To obtain a weight for each Monte Carlo sample with a fixed configuration of classical variables, the moment expansion of the density of states by Chebyshev polynomials is applied instead of the direct diagonalization of the fermion Hamiltonian. This reduces a cpu time to scale as $O(N_{\rm dim}^{2} \log N_{\rm dim})$ compared to $O(N_{\rm dim}^{3})$ for the diagonalization in the conventional technique; $N_{\rm dim}$ is the dimension of the Hamiltonian. Another advantage of this method is that parallel computation with high efficiency is possible. These significantly save total cpu times of Monte Carlo calculations because the calculation of a Monte Carlo weight is the bottleneck part. The method is applied to the double-exchange model as an example. The benchmark results show that it is possible to make a systematic investigation using a system-size scaling even in three dimensions within a realistic cpu timescale.
description: 6 pages including 4 figures
Exact Ground-State Energy of the Ising Spin Glass on Strips
Creators: name: Kadowaki, Tadashi
name: Nonomura, Yoshihiko
name: Nishimori, Hidetoshi
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We propose a new method for exact analytical calculation of the ground-state energy of the Ising spin glass on strips. An outstanding advantage of this method over the numerical transfer matrix technique is that the energy is obtained for complex values of the probability describing quenched randomness. We study the $\pm J$ and the site-random models using this method for strips of various sizes up to $5\times\infty$. The ground-state energy of these models is found to have singular points in the complex-probability plane, reminiscent of Lee-Yang zeros in the complex-field plane for the Ising ferromagnet. The $\pm J$ Ising model has a series of singularities which may approach a limiting point around $p \sim 0.9$ on the real axis in the limit of infinite width.
description: 10 pages, 12 Postscript figures, LaTeX, uses subeqn.sty, minor changes in tex-file
Single Top Quark Production via FCNC Couplings at Hadron Colliders
Creators: name: Han, T.
name: Hosch, M.
name: Whisnant, K.
name: Young, Bing-Lin
name: Zhang, X.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate single top-quark production at hadron colliders via the chromo-magnetic flavor-changing neutral current couplings $\bar tcg$ and $\bar tug$. We find that the strength for the anomalous $\bar tcg$ ($\bar tug$) coupling may be probed to $κ_c / Λ= 0.092 {TeV}^{-1}$ ($κ_u / Λ= 0.026 {TeV}^{-1}$) at the Tevatron with $2 {fb}^{-1}$ of data and $κ_c / Λ= 0.013 {TeV}^{-1}$ ($κ_u / Λ= 0.0061 {TeV}^{-1}$) at the LHC with $10 {fb}^{-1}$ of data. The two couplings may be distinguished by a comparision of the single top signal with the direct top and top decay signals for these couplings.
description: 18 pages, 6 figures, 3 tables
Thermopower and thermal conductance of a superconducting quantum point contact
Creators: name: Pershoguba, Sergey S.
name: Glazman, Leonid I.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We find the charge and heat currents caused by a temperature difference applied to a superconducting point contact or to a quantum point contact between a superconducting and normal conductors. The results are formulated in terms of the properties of the electron scattering matrix of the quantum point contact in its normal state, and are valid at any transmission coefficient. In the low-transmission limit, the new theory provides reliable results, setting the limits for the use of the popular method of tunnel Hamiltonian.
description: 12+8 pages, 8 figures; v.3; updated text and references; corresponds to the published version
Phase relations in superconductor-normal metal-superconductor tunnel junctions
Creators: name: Barash, Yu. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The phase difference $ϕ$, between the superconducting terminals in superconductor-normal metal-superconductor tunnel junctions (SINIS), incorporates the phase differences $χ_{1,2}$ across thin interfaces of constituent $SIN$ junctions and the phase incursion $φ$ between the side faces of the central electrode of length $L$. It is demonstrated here that $χ_{1,2}$ pass through over their proximity-reduced domain twice, there and back, while $ϕ$ changes over the single period. Two corresponding solutions, that describe the double-valued order-parameter dependence on $χ_{1,2}$, jointly form the single-valued dependence on $ϕ$, operating in two adjoining regions of $ϕ$. The phase incursion $φ$ plays a crucial role in creating such a behavior. The current-phase relation $j(ϕ,L)$ is composed of the two solutions and, at a fixed small $L$, is characterized by the phase-dependent effective transmission coefficient.
description: 11 pages, 4 figures
Various ordered states in a 2D interacting electron system close to an electronic topological transition
Creators: name: Bouis, F.
name: Kiselev, M. N.
name: Onufrieva, F.
name: Pfeuty, P.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider a 2D electron system on a square lattice with hopping beyond nearest neighbors. The existence of the quantum critical point associated with an electronic topological transition in the noninteracting system results in density wave (DW) and high temperature d-wave superconducting (dSC) instabilities in the presence of an exchange interaction J. We analyse different DW ordering such as isotropic Spin DW (SDW), d-wave SDW, isotropic Charge DW (CDW) and d-wave CDW. The coexistence of dSC and SDW orders leads necessary to the existence of a third order which is a pi triplet superconducting (PTS) order. A new phase diagram with a mixed phase of SDW, dSC and PTS order is found. The theory is applied to high-Tc cuprates.
description: 2 pages, 1 figure, submitted to LT22 (Physica B)
Measurements of the pp $\to$ WZ inclusive and differential production cross section and constraints on charged anomalous triple gauge couplings at $\sqrt{s} =$ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy $\sqrt{s} =$ 13 TeV using data collected with the CMS detector, corresponding to an integrated luminosity of 35.9 fb$^{-1}$. The inclusive cross section is measured to be $σ_{\text{tot}}$(pp $\to$ WZ$)$ = 48.09 $^{+1.00}_{-0.96}$ (stat) $^{+0.44}_{-0.37}$ (theo) $^{+2.39}_{-2.17}$ (syst) $\pm$ 1.39 (lumi) pb, resulting in a total uncertainty of $-$2.78/$+$2.98 pb. Fiducial cross section and ratios of charge-dependent cross section measurements are provided. Differential cross section measurements are also presented with respect to three variables: the Z boson transverse momentum $p_\mathrm{T}$, the leading jet $p_\mathrm{T}$, and the $m$(WZ) variable, defined as the invariant mass of the system composed of the three leptons and the missing transverse momentum. Differential measurements with respect to the W boson $p_\mathrm{T}$, separated by charge, are also shown. Results are consistent with standard model predictions, favouring next-to-next-to-leading-order predictions over those at next-to-leading order. Constraints on anomalous triple gauge couplings are derived via a binned maximum likelihood fit to the $m$(WZ) variable.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-18-002 (CMS Public Pages)