cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Some Inclusion Relations for Fuzzy Sets
Creators: name: Someyama, Norihiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 03E72

description: We give some inclusion relations for arbitrary fuzzy sets with reference to famous inequalities. In particular, we can know that the bounded sum and the algebraic product go well together. We would like to propose the concept of `Fuzzy Set Inequalities' through the present note.
description: 15 pages
Detection of [OI] 6300 and Other Diagnostic Emission Lines in the Diffuse Ionized Gas of M33 with Gemini-North
Creators: name: Voges, E. S.
name: Walterbos, R. A. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectroscopic observations of diffuse ionized gas (DIG) in M33 near the HII region NGC 604. We present the first detection of [OI] 6300 in the DIG of M33, one of the critical lines for distinguishing photo- from shock ionization models. We measure [OI]/Ha in the range of 0.04 to 0.10 and an increase in this ratio with decreasing emission measure. Our measurements of [SII]/Ha and [NII]/Ha also rise with decreasing emission measure, while our [OIII]/Hb measurements remain fairly constant. We have one tentative detection of He I in the region of brightest emission measure, with a ratio of He I/Ha = 0.033 +- 0.019, indicating that the helium is at least partially ionized. We compare our observed emission line ratios to photoionization models and find that field star ionization models do not fit our data well. Leaky HII region models are consistent with our data, without the need to invoke additional ionization mechanisms to fit our [OI] or [OIII] measurements. The closest large HII region is NGC 604 and is therefore a likely candidate for the source of the ionizing photons for the gas in this region.
description: 12 pages, 4 figures, accepted by ApJL
Integrating Data-driven Control Methods with Motion Planning: A Deep Reinforcement Learning-based Approach
Creators: name: Prabu, Avinash
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 400703
subject: Autonomous vehicle systems
classificationCode: 461105
subject: Reinforcement learning
classificationCode: 400705
subject: Control engineering
classificationCode: 350902
subject: Intelligent mobility
classificationCode: 460205
subject: Intelligent robotics
classificationCode: 460207
subject: Modelling and simulation

description: Path-tracking control is an integral part of motion planning in autonomous vehicles, in which the vehicle's lateral and longitudinal positions are controlled by a control system that will provide acceleration and steering angle commands to ensure accurate tracking of longitudinal and lateral movements in reference to a pre-defined trajectory. Extensive research has been conducted to address the growing need for efficient algorithms in this area. In this dissertation, a scenario and machine learning-based data-driven control approach is proposed for a path-tracking controller. Firstly, a Deep Reinforcement Learning model is developed to facilitate the control of longitudinal speed. A Deep Deterministic Policy Gradient algorithm is employed as the primary algorithm in training the reinforcement learning model. The main objective of this model is to maintain a safe distance from a lead vehicle (if present) or track a velocity set by the driver. Secondly, a lateral steering controller is developed using Neural Networks to control the steering angle of the vehicle with the main goal of following a reference trajectory. Then, a path-planning algorithm is developed using a hybrid A* planner. Finally, the longitudinal and lateral control models are coupled together to obtain a complete path-tracking controller that follows a path generated by the hybrid A* algorithm at a wide range of vehicle speeds. The state-of-the-art path-tracking controller is also built using Model Predictive Control and Stanley control to evaluate the performance of the proposed model. The results showed the effectiveness of both proposed models in the same scenario, in terms of velocity error, lateral yaw angle error, and lateral distance error. The results from the simulation show that the developed hybrid A* algorithm has good performance in comparison to the state-of-the-art path planning algorithms.
Elicitation on sluicing and reconstruction
Creators: name: Rudolph, Johnny (Soni)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: nkr

description: Elicitation on some voice mismatches in sluicing, followed by tests for pseudosluicing (non-linguistic antecedents, adjunct wh-questions, implicit arguments, mention-some, else-modification) and reconstruction tests (strong and weak crossover, scope). Corresponds to pages 82-86 in Notebook 3.
Charge fluctuations in open chaotic cavities
Creators: name: Buttiker, M.
name: Polianski, M. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a discussion of the charge response and the charge fluctuations of mesoscopic chaotic cavities in terms of a generalized Wigner-Smith matrix. The Wigner-Smith matrix is well known in investigations of time-delay of quantum scattering. It is expressed in terms of the scattering matrix and its derivatives with energy. We consider a similar matrix but instead of an energy derivative we investigate the derivative with regard to the electric potential. The resulting matrix is then the operator of charge. If this charge operator is combined with a self-consistent treatment of Coulomb interaction, the charge operator determines the capacitance of the system, the non-dissipative ac-linear response, the RC-time with a novel charge relaxation resistance, and in the presence of transport a resistance that governs the displacement currents induced into a nearby conductor. In particular these capacitances and resistances determine the relaxation rate and dephasing rate of a nearby qubit (a double quantum dot). We discuss the role of screening of mesoscopic chaotic detectors. Coulomb interaction effects in quantum pumping and in photon assisted electron-hole shot noise are treated similarly. For the latter we present novel results for chaotic cavities with non-ideal leads.
description: 29 pages, 13 figures;v.2--minor changes; contribution for the special issue of J. Phys. A on "Trends in Quantum Chaotic Scattering"
MUSE Analysis of Gas around Galaxies (MAGG) -- II: Metal-enriched halo gas around z~1 galaxies
Creators: name: Dutta, Rajeshwari
name: Fumagalli, Michele
name: Fossati, Matteo
name: Lofthouse, Emma K.
name: Prochaska, J. Xavier
name: Battaia, Fabrizio Arrigoni
name: Bielby, Richard M.
name: Cantalupo, Sebastiano
name: Cooke, Ryan J.
name: Murphy, Michael T.
name: O'Meara, John M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the metal-enriched cool halo gas traced by MgII absorption around 228 galaxies at z~0.8-1.5 within 28 quasar fields from the MUSE Analysis of Gas around Galaxies (MAGG) survey. We observe no significant evolution in the MgII equivalent width versus impact parameter relation and in the MgII covering fraction compared to surveys at z
description: Published in MNRAS
Gravitons in a Casimir box
Creators: name: Alessio, Francesco
name: Barnich, Glenn
name: Bonte, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The partition function of gravitons with Casimir-type boundary conditions is worked out. The simplest box that allows one to achieve full analytical control consists of a slab geometry with two infinite parallel planes separated by a distance d. In this setting, linearized gravity, like electromagnetism, is equivalent to two free massless scalar fields, one with Dirichlet and one with Neumann boundary conditions, which in turn may be combined into a single massless scalar with periodic boundary conditions on an interval of length 2d. When turning on a chemical potential for suitably adapted spin angular momentum, the partition function is modular covariant and expressed in terms of an Eisenstein series. It coincides with that for photons. At high temperature, the result provides in closed form all subleading finite-size corrections to the standard (gravitational) black body result. More interesting is the low-temperature/small distance expansion where the leading contribution to the partition function is linear in inverse temperature and given in terms of the Casimir energy of the system, whereas the leading contribution to the entropy is proportional to the area and originates from gravitons propagating parallel to the plates.
description: Reference added
Mobility management for mobile computing over wide-area wireless networks
Creators: name: Ng, Kin Weng
Publisher: name: University of British Columbia
Year: 2009

description: The growth of global networking together with the development of wide-area wireless networks and portable terminals have made host mobility support in the computing environment an important issue. To enable seamless roaming and efficient delivery of datagrams to mobile hosts, an effective means of distributing the location information of mobile hosts is needed so as to allow a computer to maintain normal communication with any nodes on the Internet regardless of its point-of-attachment. Mobile IP, designed within the IETF is the current standard mobility management protocol for mobile computing. One of the concerns raised with Mobile IP is the large amount of signaling traffic generated for highly mobile computers. This thesis addresses this issue by proposing a scheme developed over Mobile IP with several extensions and modifications. The proposed scheme integrates location tracking with routing operation by utilizing the client-server interaction inherent in most application to provide the correspondent host with the mobile host's location. To evaluate the performance of the proposed scheme, simulations of typical Internet application sessions involving a mobile host were carried out to examine the amount of control traffic generated and the costs associated with routing packets to the mobile host. Results obtained show a substantial reduction in the mobility management overhead for the proposed scheme compared to Mobile IP, without adversely affecting the routing efficiency.
Weyl geometry, topology of space-time and reality of electromagnetic potentials, and new perspective on particle physics
Creators: name: Tiwari, S. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Consistency of Weyl natural gauge, Lorentz gauge and nonlinear gauge is studied in Weyl geometry. Field equations in generalized Weyl-Dirac theory show that spinless electron and photon are topological defects. Statistical metric and fluctuating metric in 3D space with time as a measure of spatial relations are discussed to propose a statistical interpretation of Maxwell field equations. It is argued that physical geometry is an approximation to mathematical geometry, and 4D relativistic spacetime is essentially 3D space with changing spatial relations. The present work is suggested to have radical new outlook on elementary particle physics.
description: 16 pages, revised version published in Physica Scripta
title: Modernizacja rynków małych i średnich miast wobec wyzwań adaptacji do zmian klimatu
Creators: name: Januchta-Szostak, Anna
name: Ogorzelska, Agata
name: Peplińska, Sonia
Publisher: name: Publishing House of Poznan University of Technology
Year: 2023

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura Wnętrz, 15, 243-260
Simultaneous Multicolor Observations of Starlink's Darksat by The Murikabushi Telescope with $MITSuME$
Creators: name: Horiuchi, Takashi
name: Hanayama, Hidekazu
name: Ohishi, Masatoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the $g'$-, $R_{\rm c}$-, and $I_{\rm c}$-band magnitudes and associated colors of the Starlink's STARLINK-1113 (one of the standard Starlink satellites) and 1130 (Darksat) with a darkening treatment to its surface. By the 105 cm Murikabushi telescope/$\it{MITSuME}$, simultaneous multicolor observations for the above satellites were conducted four times: on April 10, 2020, May 18, 2020 (for Darksat), and June 11, 2020 (for Darksat and STARLINK-1113). We found that (1) $g'$-band apparent magnitudes of Darksat ($6.95~\pm~0.11-7.65~\pm~0.11$ mag) are comparable to or brighter than that of STARLINK-1113 ($7.69~\pm~0.16$ mag), (2) the shorter the observed wavelength is, the fainter the satellite magnitudes tend to become, (3) the reflected flux by STARLINK-1113 is extremely ($> 1.0$ mag) redder than that of Darksat, (4) there is no clear correlation between the solar phase angle and orbital-altitude-scaled magnitude, (5) by flux-model fitting of the satellite trails with the blackbody radiation, it is found that the albedo of Darksat is about a half of that of STARLINK-1113. Especially, the result (1) is inconsistent with the previous studies. However, considering both solar and observer phase angles and atmospheric extinction, the brightness of STARLINK-1113 can be drastically reduced in the $g'$ and $R_{\rm c}$ band. Simultaneous multicolor-multispot observations more than three colors would give us more detailed information regarding the impact by the low Earth orbit satellite constellations.
description: accepted to ApJ. 18 pages, 10 figures
Competing effects of surface phonon softening and quantum size effects on the superconducting properties of nanostructured Pb
Creators: name: Bose, Sangita
name: Galande, Charudatta
name: Chockalingam, S. P.
name: Banerjee, Rajarshi
name: Raychaudhuri, Pratap
name: Ayyub, Pushan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The superconducting transition temperature (TC) in nanostructured Pb remains nearly constant as the particle size is reduced from 65 to 7nm, below which size the superconductivity is lost rather abruptly. In contrast, there is a large enhancement in the upper critical field (HC2) in the same size regime. We explore the origin of the unusual robustness of the TC over such a large particle size range in nanostructured Pb, by measuring the temperature dependence of the superconducting energy gap in planar tunnel junctions of Al/Al2O3/nano-Pb. We show that below 22nm, the electron phonon coupling strength increases monotonically with decreasing particle size, and almost exactly compensates for the quantum size effect, which is expected to suppress TC.
description: pdf file with figures
Multi-Dimensional Solution of Fast Neutrino Conversions in Binary Neutron Star Merger Remnants
Creators: name: Padilla-Gay, Ian
name: Shalgar, Shashank
name: Tamborra, Irene
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Fast pairwise conversions of neutrinos are predicted to be ubiquitous in neutron star merger remnants with potentially major implications on the nucleosynthesis of the elements heavier than iron. We present the first sophisticated numerical solution of the neutrino flavor evolution above the remnant disk within a (2+1+1) dimensional setup: two spatial coordinates, one angular variable, and time. We look for a steady-state flavor configuration above the remnant disk. Albeit the linear stability analysis predicts flavor instabilities at any location above the remnant disk, our simulations in the non-linear regime show that fast pairwise conversions lead to minimal neutrino mixing (<1%); flavor equilibration is never achieved in our models. Importantly, fast neutrino conversions are more prominent within localized regions near the edges of the (anti)neutrino decoupling surfaces and almost negligible in the polar region of the remnant. Our findings on the role of fast pairwise conversions should be interpreted with caution because of the approximations intrinsic to our setup and advocate for further work within a more realistic framework.
description: 27 pages, including 14 figures. Minor changes, one appendix added, conclusions unchanged. Matches version accepted in JCAP
Re-Assessing the "Classify and Count" Quantification Method
Creators: name: Moreo, Alejandro
name: Sebastiani, Fabrizio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Learning to quantify (a.k.a.\ quantification) is a task concerned with training unbiased estimators of class prevalence via supervised learning. This task originated with the observation that "Classify and Count" (CC), the trivial method of obtaining class prevalence estimates, is often a biased estimator, and thus delivers suboptimal quantification accuracy; following this observation, several methods for learning to quantify have been proposed that have been shown to outperform CC. In this work we contend that previous works have failed to use properly optimised versions of CC. We thus reassess the real merits of CC (and its variants), and argue that, while still inferior to some cutting-edge methods, they deliver near-state-of-the-art accuracy once (a) hyperparameter optimisation is performed, and (b) this optimisation is performed by using a true quantification loss instead of a standard classification-based loss. Experiments on three publicly available binary sentiment classification datasets support these conclusions.
description: This is the final version of the paper, identical to the one that is going to appear on the Proceedings of the 43rd European Conference on Information Retrieval (ECIR 2021)
Dephasing due to electron-electron interaction in a diffusive ring
Creators: name: Texier, Christophe
name: Montambaux, Gilles
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the effect of the electron-electron interaction on the weak localization correction of a ring pierced by a magnetic flux. We compute exactly the path integral giving the magnetoconductivity for an isolated ring. The results are interpreted in a time representation. This allows to characterize the nature of the phase coherence relaxation in the ring. The nature of the relaxation depends on the time regime (diffusive or ergodic) but also on the harmonics $n$ of the magnetoconductivity. Whereas phase coherence relaxation is non exponential for the harmonic $n=0$, it is always exponential for harmonics $n\neq0$. Then we consider the case of a ring connected to reservoirs and discuss the effect of connecting wires. We recover the behaviour of the harmonics predicted recently by Ludwig & Mirlin for a large perimeter (compared to the Nyquist length). We also predict a new behaviour when the Nyquist length exceeds the perimeter.
description: 21 pages, RevTeX4, 8 eps figures; version of 10/2006 : eqs.(100-102) of section V.C corrected
Pauli crystals -- interplay of symmetries
Creators: name: Gajda, Mariusz
name: Mostowski, Jan
name: Pylak, Maciej
name: Sowiński, Tomasz
name: Załuska-Kotur, Magdalena
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently observed Pauli crystals are structures formed by trapped ultracold atoms with the Fermi statistics. Interactions between these atoms are switched off, so their relative positions are determined by joined action of the trapping potential and the Pauli exclusion principle. Numericalmodeling is used in this paper to find the Pauli crystals in a two-dimensional isotropic harmonic trap, three-dimensional harmonic trap, and a two-dimensional square well trap. The Pauli crystals do not have the symmetry of the trap -- the symmetry is broken by the measurement of positions and, in many cases, by the quantum state of atoms in the trap. Furthermore, the Pauli crystals are compared with the Coulomb crystals formed by electrically charged trapped particles. The~structure of the Pauli crystals differs from that of the Coulomb crystals, this provides evidence that the exclusion principle cannot be replaced by a two-body repulsive interaction but rather has to be considered to be a specifically quantum mechanism leading to many-particle correlations.
description: This article belongs to the Special Issue "Symmetries and the Pauli Exclusion Principle"
Time-rescaling of Dirac dynamics: shortcuts to adiabaticity in ion traps and Weyl semimetals
Creators: name: Roychowdhury, Agniva
name: Deffner, Sebastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Only very recently, rescaling time has been recognized as a way to achieve adiabatic dynamics in fast processes. The advantage of time-rescaling over other shortcuts to adiabaticity is that it does not depend on the eigenspectrum and eigenstates of the Hamiltonian. However, time-rescaling requires that the original dynamics are adiabatic, and in the rescaled time frame the Hamiltonian exhibits non-trivial time-dependence. In this work, we show how time-rescaling can be applied to Dirac dynamics, and we show that all time-dependence can be absorbed into the effective potentials through a judiciously chosen unitary transformation. This is demonstrated for two experimentally relevant scenarios, namely for ion traps and adiabatic creation of Weyl points.
description: 13 pages, 1 figure
Ion-aerosol interactions in the lower atmosphere of Venus
Creators: name: Aplin, K. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Space Physics (physics.space-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: All planetary atmospheres are electrified to some extent by cosmic ray ionisation, and Venus is no exception. There is increasing awareness that ion-aerosol interactions could modulate terrestial radiative processes, and this possibility will be investigated for the Venusian atmosphere. The likelihood of a Venusian global atmospheric electric circuit will also be discussed.
description: Based on oral presentation at Venus Entry Probe Workshop, ESA/ESTEC, 19-20 January 2006
title: Programme de la Société Patriotique de Hesse-Hombourg
Creators: name: Société Patriotique De Hesse-Hombourg
Publisher: name: Philipps-Universität Marburg
Year: 1777
Subjects: General history of Europe Central Europe Germany
Geschichte Deutschlands

description: Layoutgetreues Digitalisat der Ausg.: Hombourg-ez-Monts, 1777-1777 Zentralbibliothek Sign.: VIII C 1054 s #
Preprocessing tools for transient simulation programs at UBC
Creators: name: Dai, Nan
Publisher: name: University of British Columbia
Year: 2009

description: This thesis presents three improvements on UBC's transients simulation programs. The first two are in connection with the existing off-line simulator MicroTran, while the last one is in connection with the newest frequency-dependent Z - Line model. MicroTran is a very powerful tool for power system transient analysis as well as steady-state analysis. It has been applied successfully for many years. However, it still needs improvements to extend its application. One improvement is related to statistical data analysis. This type of analysis is very helpful for applications such as insulation system design. In Chapter 1, an example of statistical analysis of switching surges during circuit breaker energization is used to implement the whole procedure of statistical analysis totally by software. Another improvement is related to the data input interface. The original data entry module mtData requires very strictly defined data formats and pre-calculations have to be made for some special components. This is inconvenient for those who are not familiar with these components or are not advanced computer users. In Chapter 2 the user interface for a graphical version (GUI) of data input cards is introduced and the data filter program being responsible for transferring data to the requirement format internally is explained. The newest frequency-dependent Z - Line model was recently developed by Dr. Castellanos and is based on space discretization. It separates the characteristics of the wave equation into two parts: constant ideal wave propagation and frequency-dependent wave distortion. For a practical implementation of the Z - Line model two questions needed to be solved. One was the development of a general fitting procedure to help the user obtain in an automatic manner the full frequency-dependent line impedance representation [Z[sup loss] ω]. The other aspect was to find a general relationship between the maximum section length and the highest frequency of interest in transient studies so that the program can automatically determine how many sections are needed for the specified accuracy of the simulation. In Chapter 3 the solutions to these two critical problems are explained in detail.
Correlated electronic structure and optical response of rare-earth-based semiconductors
Creators: name: Galler, Anna
name: Boust, James
name: Demourgues, Alain
name: Biermann, Silke
name: Pourovskii, Leonid V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Simultaneous occurrence of the Mott and band gap in correlated semiconductors results in a complex optical response with the nature of the absorption edge difficult to resolve both experimentally and theoretically. Here, we combine a dynamical mean-field theory approach to localized 4f shells with an improved description of band gaps by a semi-local exchange-correlation potential to calculate the optical properties of the light rare-earth fluorosulfides LnSF (Ln=Pr, Nd, Sm, Gd) from first principles. In agreement with experiment, we find the absorption edge in SmSF to stem from S-3p to Sm-4f transitions, while the Gd compound behaves as an ordinary p-d gap semiconductor. In the unexplored PrSF and NdSF systems we predict a rather unique occurrence of strongly hybridized 4f-5d states at the bottom of the conduction band. The nature of the absorption edge underlies a peculiar anisotropy of the optical conductivity in each system.
Strong transient flows generated by thermoplasmonic bubble nucleation
Creators: name: Jones, Steven
name: Andrén, Daniel
name: Antosiewicz, Tomasz J.
name: Stilgoe, Alexander
name: Rubinsztein-Dunlop, Halina
name: Käll, Mikael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The challenge of inducing and controlling localized fluid flows for generic force actuation and for achieving efficient mass transport in microfluidics is key to the development of next generation miniaturized systems for chemistry and life sciences. Here we demonstrate a methodology for the robust generation and precise quantification of extremely strong flow transients driven by vapor bubble nucleation on spatially isolated plasmonic nanoantennas excited by light. The system is capable of producing peak flow speeds of the order mm/s at modulation rates up to 100 Hz in water, thus allowing for a variety of high-throughput applications. Analysis of flow dynamics and fluid viscosity dependence indicate that the transient originates in the rapid bubble expansion that follows nucleation rather than being strictly thermocapillary in nature.
description: Main Text: 11 pages, 4 figures Supporting Information: 9 pages, 8 figures. Revised manuscript: further details about experiment and analysis, corrected minor analysis error, further clarification of physical understanding
Spatial fluctuations in the spectral shape of the UV background at 2
Creators: name: Bolton, James S.
name: Haehnelt, Martin G.
name: Viel, Matteo
name: Carswell, Robert F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The low density hydrogen and helium in the IGM probed by QSO absorption lines is sensitive to the amplitude and spectral shape of the metagalactic UV background. We use realistic HI and HeII Ly-alpha forest spectra, constructed from state-of-the-art hydrodynamical simulations of a Lambda-CDM Universe, to confirm the reliability of using line profile fitting techniques to infer the ratio of the metagalactic HI and HeII ionization rates. We further show that the large spatial variations and the anti-correlation with HI absorber density observed in the ratio of the measured HeII to HI column densities can be explained in a model where the HI ionization rate is dominated by the combined UV emission from young star forming galaxies and QSOs and the HeII ionization rate is dominated by emission from QSOs only. In such a model the large fluctuations in the column density ratio are due to the small number of QSOs expected to contribute at any given point to the HeII ionization rate. A significant contribution to UV emission at the HeII photoelectric edge from hot gas in galaxies and galaxy groups would decrease the expected fluctuations in the column density ratio. Consequently, this model appears difficult to reconcile with the large increase in HeII opacity fluctuations towards higher redshift. Our results further strengthen previous suggestions that observed HeII Ly-alpha forest spectra at z~2-3.5 probe the tail end of the reionization of HeII by QSOs.
description: 14 pages, 7 figures, accepted for publication in MNRAS. Minor changes to submitted version, most notably an extra section (5.2) and figure (fig.6)
Electron Acceleration during Macroscale Magnetic Reconnection
Creators: name: Arnold, Harry
name: Drake, James
name: Swisdak, Marc
name: Guo, Fan
name: Dahlin, Joel
name: Chen, Bin
name: Fleishman, Gregory
name: Glesener, Lindsay
name: Kontar, Eduard
name: Phan, Tai
name: Shen, Chengcai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The first self-consistent simulations of electron acceleration during magnetic reconnection in a macroscale system are presented. Consistent with solar flare observations the spectra of energetic electrons take the form of power-laws that extend more than two decades in energy. The drive mechanism for these nonthermal electrons is Fermi reflection in growing and merging magnetic flux ropes. A strong guide field is found to suppress the production of nonthermal electrons by weakening the Fermi drive mechanism. For a weak guide field the total energy content of nonthermal electrons dominates that of the hot thermal electrons even though their number density remains small. Our results are benchmarked with the hard x-ray, radio and extreme ultra-violet (EUV) observations of the X8.2-class solar flare on September 10, 2017.
Learning by message-passing in networks of discrete synapses
Creators: name: Braunstein, Alfredo
name: Zecchina, Riccardo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Machine Learning (cs.LG)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: We show that a message-passing process allows to store in binary "material" synapses a number of random patterns which almost saturates the information theoretic bounds. We apply the learning algorithm to networks characterized by a wide range of different connection topologies and of size comparable with that of biological systems (e.g. $n\simeq10^{5}-10^{6}$). The algorithm can be turned into an on-line --fault tolerant-- learning protocol of potential interest in modeling aspects of synaptic plasticity and in building neuromorphic devices.
description: 4 pages, 3 figures; references updated and minor corrections; accepted in PRL
title: Zieleń na osiedlach deweloperskich
Creators: name: Osiak, Aleksandra
name: Kasińska-Andruszkiewicz, Agnieszka
Publisher: name: Publishing House of Poznan University of Technology
Year: 2023

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura Wnętrz, 15, 261-280
Deterministic force-free resonant activation
Creators: name: Capała, Karol
name: Dybiec, Bartłomiej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Combined action of noise and deterministic force in dynamical systems can induce resonant effects. Here, we demonstrate a minimal, deterministic-force-free, setup allowing for occurrence of resonant, noise induced effects. We show that in the archetypal problem of escape from finite intervals driven by $α$-stale noise with the periodically modulated stability index, depending on the initial direction of the modulation, resonant-activation-like or noise-enhanced-stability-like phenomena can be observed.
description: 8 pages
A note on synthesizing geodesic based contact curves
Creators: name: Kumar, Rajesh
name: Mukherjee, Sudipto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The paper focuses on synthesizing optimal contact curves that can be used to ensure a rolling constraint between two bodies in relative motion. We show that geodesic based contact curves generated on both the contacting surfaces are sufficient conditions to ensure rolling. The differential geodesic equations, when modified, can ensure proper disturbance rejection in case the system of interacting bodies is perturbed from the desired curve. A corollary states that geodesic curves are generated on the surface if rolling constraints are satisfied. Simulations in the context of in-hand manipulations of the objects are used as examples.
Characterization of strain fields in Si1-xGex island structures by means of quantitative high-resolution electron microscopy
Creators: name: Tham, Anh Tuan
name: Otto, Reinhard
name: Neumann, Wolfgang
name: Wawra, Herbert
name: Strunk, H. P.
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten

description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Dark Matter as a Solution to Muonic Puzzles
Creators: name: Perelstein, Maxim
name: San, Yik Chuen
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a simple model in which dark matter particle exchanges mediate a new quantum force between muons and nucleons, resolving the proton charge radius puzzle. At the same time, the discrepancy between the measured anomalous magnetic moment of the muon and the Standard Model prediction can be accommodated, and thermal relic abundance of the dark matter candidate is consistent with observations. The dark matter particle mass is in the MeV range. We show that the model is consistent with a variety of experimental and observational constraints.
description: 7 pages, 7 figures. Version 2: updated constraints, new benchmark point, conclusions unchanged
Is there a Jordan geometry underlying quantum physics?
Creators: name: Bertram, Wolfgang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There have been several propositions for a geometric and essentially non-linear formulation of quantum mechanics. From a purely mathematical point of view, the point of view of Jordan algebra theory might give new strength to such approaches: there is a ``Jordan geometry'' belonging to the Jordan part of the algebra of observables, in the same way as Lie groups belong to the Lie part. Both the Lie geometry and the Jordan geometry are well-adapted to describe certain features of quantum theory. We concentrate here on the mathematical description of the Jordan geometry and raise some questions concerning possible relations with foundational issues of quantum theory.
description: 30 pages
A self-consistency motivation analysis of employee reaction to job insecurity
Creators: name: Lin, Xiaosong
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: HD5708.4 .L56 2010
subject: Job security
subject: Employee motivation

description: This study contrasts a social exchange explanation of job insecurity's negative effect on outcomes with an explanation based on self-consistency motivational theory. Specifically, I examined job insecurity's effect on employee outcomes (job performance, affective commitment and mental health) as mediated by organization-based self-esteem, based on self-consistency motivational theory, after controlling for the effect of perceived psychological contract breach, based on social exchange theory. I also proposed and tested perceived supervisor support as a moderator of the relationship between job insecurity and organization-based self-esteem. In a sample of 176 subordinate-supervisor dyads from China, results supported the unique mediating effect of organization-based self-esteem supporting self-consistency motivational theory explanation. Perceived supervisor support was found to mitigate the negative effect of job insecurity on organization-based self-esteem.
Elicitation on sluicing and movement diagnostics
Creators: name: Rudolph, Johnny (Soni)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: nkr

description: An elicitation on sluicing with argument remnants and voice mismatches, followed by diagnostics for movement, including conditions A and C, idioms, and participant number. Corresponds to pages 70-81 in Notebook 3.
Equilibrium Positions and Eigenfunctions of Shape Invariant (`Discrete') Quantum Mechanics
Creators: name: Odake, S.
name: Sasaki, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Certain aspects of the integrability/solvability of the Calogero-Sutherland-Moser systems and the Ruijsenaars-Schneider-van Diejen systems with rational and trigonometric potentials are reviewed. The equilibrium positions of classical multi-particle systems and the eigenfunctions of single-particle quantum mechanics are described by the same orthogonal polynomials: the Hermite, Laguerre, Jacobi, continuous Hahn, Wilson and Askey-Wilson polynomials. The Hamiltonians of these single-particle quantum mechanical systems have two remarkable properties, factorization and shape invariance.
description: 30 pages, 1 figure. Contribution to proceedings of RIMS workshop "Elliptic Integrable Systems" (RIMS, Nov. 2004)
Müller, Beda, de la Trinité Kervingant, M.: Einheit wächst im Herzen
Creators: name: Vo.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 36 Nr. 1 (1987): Ökumenische Rundschau, Band 36, Heft 1
Control of single phase parallel inverter systems
Creators: name: Vorell, Kourosh
Publisher: name: University of British Columbia
Year: 2009

description: We have proposed two new control methods which allow two or more single phase PWM inverter modules to operate in parallel. Our main goals are to achieve balanced load sharing among all inverter modules and to eliminate any circulating currents in the system. The first proposed control technique is the current imbalance method in which each inverter module is provided with a current imbalance signal. The current imbalance signal is calculated for each module as the difference between the expected module current an the actual module current. Inverter modules use the current imbalance signal to deliver the expected current to the load; thus, the system can achieve balanced load sharing. Computer simulations of this control method provides satisfactory results for typical load values. However, at low loads, inverters do not share the load current and the system suffers from circulating currents. The prototype testing of the current imbalance method indicates more problems with this technique. Due to low noise immunity and sensitivity of the system, the load current is not fully shared among modules even for typical loads. The second proposed control technique is the single voltage control method which is similar to a conventional current mode control, with the exception of having two or more current loops (inverter modules). This technique uses a single voltage control block which provides a reference current for all the inverter modules. The effect of adding or removing inverter modules on the stability of the system has been studied. The system can be designed to tolerate a few faulty modules. Both the computer simulation and prototype testing of this technique give satisfactory results: good load sharing, no circulating currents, and stable operation over a large range of loads. Therefore, we recommend using the single voltage control method in most applications.
Magnetocaloric effect in the intermetallic compound DyNi
Creators: name: Tripathy, S. K.
name: Suresh, K. G.
name: Nirmala, R.
name: Nigam, A. K.
name: Malik, S. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic and heat capacity measurements have been carried out on the polycrystalline sample of DyNi which crystallizes in the orthorhombic FeB structure (space group Pnma). This compound is ferromagnetic with a Curie temperature of 59 K. Magnetization-field isotherms at low temperatures shows a step-like behavior characteristic of metamagnetic transitions. The magnetocaloric effect has been measured both in terms of isothermal magnetic entropy change and adiabatic temperature change for various applied magnetic fields. The maximum values of the entropy change and the temperature change are found to be 19 Jkg-1K-1 and 4.5 K, respectively, for a field of 60 kOe. The large magnetocaloric effect is attributed to the field-induced spin-flop metamagnetism occurring in this compound, which has a noncollinear magnetic structure at low fields.
description: 11 pages
Multiphase tin equation of state using density functional theory
Creators: name: Rehn, Daniel A.
name: Greeff, Carl W.
name: Burakovsky, Leonid
name: Sheppard, Daniel G.
name: Crockett, Scott D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform density functional theory (DFT) calculations of five solid phases and the liquid phase of tin. The calculations include cold curves of the five solid phases, phonon calculations in the quasi-harmonic approximation over a range of volumes for each solid phase, and DFT-based molecular dynamics (DFT-MD) calculations of the liquid phase. Using the DFT results, we construct a tabular multiphase SESAME equation of state for tin, referred to as SESAME 2162. Comparisons to experimental data are made and show a high level of agreement in isobaric data, isothermal data, shock data, and phase boundary measurements, including measurements of the melt curve. The 2162 EOS will be useful for hydrodynamics simulations and has been designed with an eye toward hydrodynamics simulations that incorporate materials strength models and allow for modeling of the kinetics of phase transitions.
On a recursive equation over $p$-adic field
Creators: name: Mukhamedov, Farrukh
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 46S10, 12J12

description: In the paper we completely describe the set of all solutions of a recursive equation, arising from the Bethe lattice models over $p$-adic numbers.
description: 6 pages. Appear in Appl. Math. Lett
Elicitation on scope and wh-questions
Creators: name: Rudolph, Johnny (Soni)
name: Rudolph, Ruth (Analidele)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: nkr

description: After a recap on ina and object position, an elicitation on scope judgments in transitives and ditransitives, particulary indefinites, and wh-questions for passives and ditransitives. Corresponds to pages 62-69 in Notebook 3.
Phase diagram of generalized fully frustrated XY model in two dimensions
Creators: name: Minnhagen, Petter
name: Kim, Beom Jun
name: Bernhardsson, Sebastian
name: Cristofano, Gerardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is shown that the phase diagram of the two-dimensional generalized fully-frustrated XY model on a square lattice contains a crossing of the chirality transition and the Kosterlitz-Thouless (KT) transition, as well as a stable phase characterized by a finite helicity modulus $Υ$ and an unbroken chirality symmetry. The crossing point itself is consistent with a critical point without any jump in $Υ$, with the size ($L$) scaling $% Υ\sim L^{-0.63}$ and the critical index $ν\approx0.77$. The KT transition line remains continuous beyond the crossing but eventually turns into a first-order line. The results are established using Monte-Carlo simulations of the staggered magnetization, helicity modulus, and the fourth-order helicity modulus.
description: 5 pages, 5 figures, in two columns
Structural precursor to the metal-insulator transition in V_2O_3
Creators: name: Pfalzer, P.
name: Obermeier, G.
name: Klemm, M.
name: Horn, S.
name: denBoer, M. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The temperature dependence of the local structure of V_2O_3 in the vicinity of the metal to insulator transition (MIT) has been investigated using hard X-ray absorption spectroscopy. It is shown that the vanadium pair distance along the hexagonal c-axis changes abruptly at the MIT as expected. However, a continuous increase of the tilt of these pairs sets in already at higher temperatures and reaches its maximum value at the onset of the electronic and magnetic transition. These findings confirm recent theoretical results which claim that electron-lattice coupling is important for the MIT in V_2O_3. Our results suggest that interactions in the basal plane play a decisive role for the MIT and orbital degrees of freedom drive the MIT via changes in hybridization.
description: 6 pages, 5 figures, 2 tables