cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Epitaxial growth and transport properties of Nb-doped SrTiO$_{3}$ thin films
Creators: name: Takahashi, K. S.
name: Jaccard, D.
name: Shibuya, K.
name: Ohnishi, T.
name: Lippmaa, M.
name: Triscone, J. -M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nb-doped SrTiO$_{3}$ epitaxial thin films have been prepared on (001) SrTiO$_{3}$ substrates using pulsed laser deposition. A high substrate temperature ($>1000^{\circ}{C}$) was found to be necessary to achieve 2-dimensional growth. Atomic force microscopy reveals atomically flat surfaces with 3.9 Å$ $ steps. The films show a metallic behavior, residual resistivity ratios between 10 and 100, and low residual resistivity of the order of 10$^{-4}$$Ω$cm. At 0.3 K, a sharp superconducting transition, reaching zero resistance, is observed.
description: 4 pages, 4 figures
Comparison of simulated backgrounds with in-orbit observations for HE, ME and LE onboard Insight-HXMT
Creators: name: Zhang, Juan
name: Li, Xiaobo
name: Ge, Mingyu
name: Zhao, Haisheng
name: Tuo, Youli
name: Xie, Fei
name: Li, Gang
name: Zheng, Shijie
name: Nie, Jianyin
name: Song, Liming
name: Zhang, Aimei
name: Yang, Yanji
name: Chen, Yong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1\,keV to 250\,keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME) and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreement is shown for all three telescopes. For HE, 1) the deviation of the simulated background rate after two years of operation in space is $\sim5\%$ from the observation; 2) the total background spectrum and the relative abundance of the $\sim$67\,keV line show long-term increases both in simulations and observations. For ME, 1) the deviation of simulated background rate is within $\sim15\%$ from the observation, and 2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e. space environment components and models adopted, physics processes selected and detector constructions built, is reasonable. However, the line features at $\sim$7.5\,keV and 8.0\,keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.
description: 12 pages, 12 figures, accepted for publication in Astrophysics and Space Science
Gigahertz Clocked Quantum Key Distribution in Passive Optical Networks
Creators: name: Fernandez, Veronica
name: Collins, Robert J.
name: Gordon, Karen J.
name: Townsend, Paul D.
name: Buller, Gerald S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two multi-user approaches to fiber-based quantum key distribution systems operating at gigahertz clock frequencies are presented, both compatible with standard telecommunications fiber.
description: IEEE LEOS Summer Topical 2006 - Quantum Communications in Telecom Networks - July 17-19 2006 - Quebec City, Canada
Discussion of the eta to pi^0 gamma gamma decay within a chiral unitary approach
Creators: name: Oset, E.
name: Pelaez, J. R.
name: Roca, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We improve the calculations of the $η\to π^0 γγ$ decay within the context of meson chiral lagrangians. We use a chiral unitary approach for the meson-meson interaction, thus generating the $a_0(980)$ resonance and fixing the longstanding sign ambiguity on its contribution. This also allows us to calculate the loops with one vector meson exchange, thus removing a former source of uncertainty. In addition we ensure the consistency of the approach with other processes. First, by using vector meson dominance couplings normalized to agree with radiative vector meson decays. And, second, by checking the consistency of the calculations with the related $γγ\to π^0 η$ reaction. We find an $η\to π^0 γγ$ decay width of $0.47\pm 0.10$ eV, in clear disagreement with published data but in remarkable agreement with the most recent measurement.
description: Talk at the eta05 Workshop on production and decay of eta and eta' mesons, Krakow, September05. Includes discussion on a proper comparison of data with old chiral perturbation results
"Volk Gottes, das aus den unterdrückten Kulturen wiedergeboren wird"
Creators: name: Tiel, Gerhard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 42 Nr. 1 (1993): Ökumenische Rundschau, Band 42, Heft 1
Bound-States of the Spinless Salpeter Equation for the PT-Symmetric Generalized Hulthen Potential by the Nikiforov-Uvarov Method
Creators: name: Ikhdair, Sameer M.
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The one-dimensional spinless Salpeter equation has been solved for the PT-symmetric generalized Hulthén potential. The Nikiforov-Uvarov {NU) method which is based on solving the second-order linear differential equations by reduction to a generalized equation of hypergeometric type is used to obtain exact energy eigenvalues and corresponding eigenfunctions. We have investigated the positive and negative exact bound states of the s-states for different types of complex generalized Hulthen potentials.
description: 24 pages
Variational principle for time-periodic quantum systems
Creators: name: Krüger, Nils
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A variational principle enabling one to compute individual Floquet states of a periodically time-dependent quantum system is formulated, and successfully tested against the benchmark system provided by the analytically solvable model of a linearly driven harmonic oscillator. The principle is particularly well suited for tracing individual Floquet states through parameter space, and may allow one to obtain Floquet states even for very high-dimensional systems which cannot be treated by the known standard numerical methods.
Accretion of cool stellar winds on Sgr A*: another puzzle of the Galactic Centre?
Creators: name: Cuadra, J.
name: Nayakshin, S.
name: Springel, V.
name: Di Matteo, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Sgr A* is currently being fed by winds from a cluster of gravitationally bound young mass-loosing stars. Using observational constraints on the orbits, mass loss rates and wind velocities of these stars, we numerically model the distribution of gas in the ~ 0.1--10'' region around Sgr A*. We find that radiative cooling of recently discovered slow winds leads to the formation of many cool filaments and blobs, and to a thin and rather light accretion disc of about an arcsecond scale. The disc however does not extend all the way to our inner boundary. Instead, hot X-ray emitting gas dominates the inner arcsecond. In our simulations, cool streams of gas frequently enter this region on low angular momentum orbits, and are then disrupted and heated up to the ambient hot gas temperature. The accreting gas around Sgr A* is thus two-phase, with a hot component, observable at X-ray wavelengths, and a cool component, which may be responsible for the majority of time variability of Sgr A* emission on hundred and thousand years time-scales. We obtain an accretion rate of a few times 10^-6 msun/year, consistent with Chandra estimates, but variable on time-scales even shorter than hundred years. These results strongly depend on the chosen stellar orbits and wind parameters. Further observational input is thus key to a better modelling of Sgr A* wind accretion.
description: 5 pages, 2 figures. MNRAS Letter, accepted. For associated movies, see http://www.mpa-garching.mpg.de/~jcuadra/Winds . (v2: extended discussion and description of the numerical method.)
Structural and chemical mechanisms governing stability of inorganic Janus nanotubes
Creators: name: Bölle, Felix Tim
name: Mikkelsen, August E. G.
name: Thygesen, Kristian S.
name: Vegge, Tejs
name: Castelli, Ivano E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One-dimensional inorganic nanotubes hold promise for technological applications due to their distinct physical/chemical properties, but so far advancements have been hampered by difficulties in producing single-wall nanotubes with a well-defined radius. In this work we investigate, based on Density Functional Theory (DFT), the formation mechanism of 135 different inorganic nanotubes formed by the intrinsic self-rolling driving force found in asymmetric 2D Janus sheets. We show that for isovalent Janus sheets, the lattice mismatch between inner and outer atomic layers is the driving force behind the nanotube formation, while in the non-isovalent case it is governed by the difference in chemical bond strength of the inner and outer layer leading to steric effects. From our pool of candidate structures we have identified more than 100 tubes with a preferred radius below 35 Å, which we hypothesize can display unique properties compared to their parent 2D monolayers. Simple descriptors have been identified to accelerate the discovery of small-radius tubes and a Bayesian regression approach has been implemented to assess the uncertainty in our predictions on the radius.
description: 26 pages, 8 figures
New Physics in B and K Decays
Creators: name: Fleischer, Robert
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Flavour physics offers interesting probes for the exploration of the Standard Model and the search for new physics. In these lectures, we focus on B- and K-meson decays, introduce the concept of low-energy effective Hamiltonians to describe them theoretically, and discuss how physics beyond the Standard Model may generically affect the roadmap of quark-flavour physics. We address then both the implications of the B-factory data for the B_d -> J/psi K_S channel and the prospects of B_s -> J/psi phi modes for hadron colliders, and discuss how the Standard Model may be challenged through B_d -> phi K_S. Finally, as an example of a systematic flavour strategy to search for new physics, we analyze puzzling patterns in the B -> pi pi, pi K data and study their interplay with rare K and B decays.
description: 44 pages, 10 figures, invited lectures given at the Lake Louise Winter Institute "Fundamental Interactions", Chateau Lake Louise, Alberta, Canada, 20-26 February 2005
The Role of Language in Addressing Nigeria's Multifarious Challenges
Creators: name: Bamidele, Gbenga Samuel
name: Adama, Grace Aye
Publisher: name: Zenodo
Year: 2019

description: The multifarious challenges confronting Nigeria are as old as the existence of the country. Since Nigeria got her independence in 1960, she has been bedeviled by one challenge or the other which have become both multidimensional and multi-faceted in scope and magnitude because they are not properly managed and curtailed. It can be argued that the various interventions and attempts to solve these challenges have yielded little or no positive effect.
Charge Exchange Spectra of Hydrogenic and He-like Iron
Creators: name: Wargelin, B. J.
name: Beiersdorfer, P.
name: Neill, P. A.
name: Olson, R. E.
name: Scofield, J. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present H-like Fe XXVI and He-like Fe XXV charge-exchange spectra resulting from collisions of highly charged iron with N2 gas at an energy of 10 eV/amu in an electron beam ion trap. Although individual high-n emission lines are not resolved in our measurements, we observe that the most likely level for Fe25+ --> Fe24+ electron capture is n~9, in line with expectations, while the most likely value for Fe26+ --> Fe25+ charge exchange is significantly higher. In the Fe XXV spectrum, the K-alpha emission feature dominates, whether produced via charge exchange or collisional excitation. The K-alpha centroid is lower in energy for the former case than the latter (6666 versus 6685 eV, respectively), as expected because of the strong enhancement of emission from the forbidden and intercombination lines, relative to the resonance line, in charge-exchange spectra. In contrast, the Fe XXVI high-n Lyman lines have a summed intensity greater than that of Ly-alpha, and are substantially stronger than predicted from theoretical calculations of charge exchange with atomic H. We conclude that the angular momentum distribution resulting from electron capture using a multi-electron target gas is significantly different from that obtained with H, resulting in the observed high-n enhancement. A discussion is presented of the relevance of our results to studies of diffuse Fe emission in the Galactic Center and Galactic Ridge, particularly with ASTRO-E2/Suzaku.
description: 16 pages, 4 figures (3 color), accepted by ApJ
A quantum magnetic analogue to the critical point of water
Creators: name: Jiménez, J. Larrea
name: Crone, S. P. G.
name: Fogh, E.
name: Zayed, M. E.
name: Lortz, R.
name: Pomjakushina, E.
name: Conder, K.
name: Läuchli, A. M.
name: Weber, L.
name: Wessel, S.
name: Honecker, A.
name: Normand, B.
name: Rüegg, Ch.
name: Corboz, P.
name: Rønnow, H. M.
name: Mila, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: At the familiar liquid-gas phase transition in water, the density jumps discontinuously at atmospheric pressure, but the line of these first-order transitions defined by increasing pressures terminates at the critical point, a concept ubiquitous in statistical thermodynamics. In correlated quantum materials, a critical point was predicted and measured terminating the line of Mott metal-insulator transitions, which are also first-order with a discontinuous charge density. In quantum spin systems, continuous quantum phase transitions (QPTs) have been investigated extensively, but discontinuous QPTs have received less attention. The frustrated quantum antiferromagnet SrCu$_2$(BO$_3$)$_2$ constitutes a near-exact realization of the paradigmatic Shastry-Sutherland model and displays exotic phenomena including magnetization plateaux, anomalous thermodynamics and discontinuous QPTs. We demonstrate by high-precision specific-heat measurements under pressure and applied magnetic field that, like water, the pressure-temperature phase diagram of SrCu$_2$(BO$_3$)$_2$ has an Ising critical point terminating a first-order transition line, which separates phases with different densities of magnetic particles (triplets). We achieve a quantitative explanation of our data by detailed numerical calculations using newly-developed finite-temperature tensor-network methods. These results open a new dimension in understanding the thermodynamics of quantum magnetic materials, where the anisotropic spin interactions producing topological properties for spintronic applications drive an increasing focus on first-order QPTs.
description: 8+4 pages, 4+3 figures
Exactly-solvable models of proton and neutron interacting bosons
Creators: name: H., S. Lerma
name: Errea, B.
name: Dukelsky, J.
name: Pittel, S.
name: Van Isacker, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We describe a class of exactly-solvable models of interacting bosons based on the algebra SO(3,2). Each copy of the algebra represents a system of neutron and proton bosons in a given bosonic level interacting via a pairing interaction. The model that includes s and d bosons is a specific realization of the IBM2, restricted to the transition regime between vibrational and gamma-soft nuclei. By including additional copies of the algebra, we can generate proton-neutron boson models involving other boson degrees of freedom, while still maintaining exact solvability. In each of these models, we can study not only the states of maximal symmetry, but also those of mixed symmetry, albeit still in the vibrational to gamma-soft transition regime. Furthermore, in each of these models we can study some features of F-spin symmetry breaking. We report systematic calculations as a function of the pairing strength for models based on s, d, and g bosons and on s, d, and f bosons. The formalism of exactly-solvable models based on the SO(3,2) algebra is not limited to systems of proton and neutron bosons, however, but can also be applied to other scenarios that involve two species of interacting bosons.
description: 8 pages, 3 figures. Submitted to Phys.Rev. C
Stable double-heavy tetraquarks: spectrum and structure
Creators: name: Meng, Q.
name: Hiyama, E.
name: Hosaka, A.
name: Oka, M.
name: Gubler, P.
name: Can, K. U.
name: Takahashi, T. T.
name: Zong, H. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity I(J^P ) = 0(1^+) in the bb\bar{u}\bar{d} channel. One is deeply bound and compact made of colored diquarks, while the other is shallow and extended as a BB^* molecule. The former agrees well with lattice QCD results. A systematic decrease in the binding energy is seen by replacing one of the heavy quarks to a lighter one. Altogether we find ten bound states. It is shown for the first time that hadrons with totally different natures emerge from a single Hamiltonian.
Surface melting of the vortex lattice
Creators: name: De Col, A.
name: Menon, G. I.
name: Geshkenbein, V. B.
name: Blatter, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We discuss the effect of an (ab)-surface on the melting transition of the pancake-vortex lattice in a layered superconductor within a density functional theory approach. Both discontinuous and continuous surface melting are predicted for this system, although the latter scenario occupies the major part of the low-field phase diagram. The formation of a quasi-liquid layer below the bulk melting temperature inhibits the appearance of a superheated solid phase, yielding an asymmetric hysteretic behavior which has been seen in experiments.
description: 4 pages, 3 figures
Extracting Electron Scattering Cross Sections from Swarm Data using Deep Neural Networks
Creators: name: Jetly, Vishrut
name: Chaudhury, Bhaskar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Electron-neutral scattering cross sections are fundamental quantities in simulations of low temperature plasmas used for many technological applications today. From these microscopic cross sections, several macro-scale quantities (called "swarm" parameters) can be calculated. However, measurements as well as theoretical calculations of cross sections are challenging. Since the 1960s researchers have attempted to solve the inverse swarm problem of obtaining cross sections from swarm data; but the solutions are not necessarily unique. To address this issues, we examine the use of deep learning models which are trained using the previous determinations of elastic momentum transfer, ionization and excitation cross sections for different gases available on the LXCat website and their corresponding swarm parameters calculated using the BOLSIG+ solver for the numerical solution of the Boltzmann equation for electrons in weakly ionized gases. We implement artificial neural network (ANN), convolutional neural network (CNN) and densely connected convolutional network (DenseNet) for this investigation. To the best of our knowledge, there is no study exploring the use of CNN and DenseNet for the inverse swarm problem. We test the validity of predictions by all these trained networks for a broad range of gas species and we deduce that DenseNet effectively extracts both long and short term features from the swarm data and hence, it predicts cross sections with significantly higher accuracy compared to ANN. Further, we apply Monte Carlo dropout as Bayesian approximation to estimate the probability distribution of the cross sections to determine all plausible solutions of this inverse problem.
Ichnofabric of tidal deposit in Balikpapan Formation, Kutai Basin (Indonesia)
Creators: name: Arifullah, Ery
name: Zaim, Yahdi
name: Aswan, Aswan
name: Djuhaeni, Djuhaeni
Publisher: name: Zenodo
Year: 2017

description: In Indonesia, the use of ichnology in sedimentological study is generally lacking. Ichnofabric aspects (e.g. bioturbation index, ichnofossil diversity, burrow diameter, penetration depth, ethology and tiering style) are a potential approach to scrutinize the environmental processes in tidal setting. In this context, penetration depth is used as an independent aspect and other ones as dependent aspects. The response of this approach to ancient tidal deposit has been studied for an outcrop of Balikpapan Formation, Kutai Basin (Indonesia). In this contribution, the nature examples of these applications are presented. The observation showing the penetration depth is unrelated to bioturbation index, ichnofossil diversity and ethology. Conversely, the correlation of penetration depth and burrow diameter and its disparity are indicated in the 4th tiering style (i.e. multiple of vertical partition, ethologies and ichnofossil diversity). The correlation may suggest the control of (i) biological aspect (e.g. consequences of deeper penetration by the bigger organism than the little one) and/or (ii) physico-chemical aspect (e.g. substrate consistency, water turbidity, oxygenation) in uppermost and lower tier. Skolithos and Ophiomorpha commonly is fabricated in uppermost tier. Conversely, Thallasinoides, Planolites, Teichicnus-Rhizocorallium and Chondrites are fabricated in the lower tier. Moreover, the ichnofabric model is an indicator of environmental conditions in tidal setting during colonization
Nambu-Goto Like Action for the AdS_5 x S^5 Superstrings in the Generalized Light-Cone Gauge
Creators: name: Itoyama, Hiroshi
name: Oota, Takeshi
name: Yoshioka, Reiji
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reinvestigate the kappa-symmetry-fixed Green-Schwarz action in the AdS_5 x S^5 background in a version of the light-cone gauge. In the generalized light-cone gauge, the action has been written in the phase space variables. We convert it into the standard action written in terms of the fields and their derivatives. We obtain a Nambu-Goto type action which has the correct flat-space limit.
description: 21 pages, no figure, LaTeX
Molecular beam epitaxy of superconducting Sn$_{1-x}$In$_x$Te thin films
Creators: name: Masuko, M.
name: Yoshimi, R.
name: Tsukazaki, A.
name: Kawamura, M.
name: Takahashi, K. S.
name: Kawasaki, M.
name: Tokura, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a systematic study on the growth conditions of Sn$_{1-x}$In$_x$Te thin films by molecular beam epitaxy for maximization of superconducting transition temperature $T_\mathrm{c}$. Careful tuning of the flux ratios of Sn, In, and Te enables us to find an optimum condition for substituting rich In content ($x$ = 0.66) into Sn site in a single phase of Sn$_{1-x}$In$_x$Te beyond the bulk solubility limit at ambient pressure ($x$ = 0.5). $T_\mathrm{c}$ shows a dome-shaped dependence on In content $x$ with the highest $T_\mathrm{c}$ = 4.20 K at $x$ = 0.55, being consistent to that reported for bulk crystals. The well-regulated Sn$_{1-x}$In$_x$Te films can be a useful platform to study possible topological superconductivity by integrating them into the state-of-the-art junctions and/or proximity-coupled devices.
description: 20 pages, 6 figures
Semantic and grammatical elicitation: Epistemic indefinites and complementation
Creators: name: Kipkoech, Linus
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of scopal possibilities of epistemic indefinites with respect to universal quantifiers, islands, etc. Elicitation of complementation with and without kole.
Modeling and Control of the Falling Film Evaporator Process
Creators: name: Hofmann, Julian
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021
Subjects: falling film evaporator
transport modeling
multivariable control
digital twin
loop pairing problem

description: Wegen ihres energieeffizienten Betriebs und flexiblen Designs haben Fallfilmverdampfer (FFV) eine breite Anwendung in der Industrie. Neben Fragen zur Konstruktion sind dominante Totzeiten herausfordernd bzgl. Prozessmodellierung und -regelung. Insbesondere erfordert die Automatisierung von Produktionssystemen digitale Zwillinge, d.h. Anlagenmodelle, um Betreiber zu schulen oder den Designprozess zu beschleunigen. Das Herz eines FFV besteht aus Rohren, an deren Innenseiten verdampfender Flüssigkeitsfilm hinabläuft. Daher sind die Rohre primäre Quelle für Totzeiten, welche sich vornehmlich auf den Transport wichtiger Prozessgrößen wie Liquidkonzentration und Massenstrom beziehen. Allerdings ist die Modellierung des entsprechenden dynamischen Verhaltens schwierig. Aus Sicht der Regelung erzeugen Totzeiten Schwingungen der Ausgangskonzentration - im Speziellen während der Anfahrprozesse. Zusätzlich verkomplizieren starke Kopplungen zwischen Ausgangsmassenstrom und -konzentration die in modernen Produktionen erforderliche Mehrgrößenregelung. Die vorliegende Arbeit präsentiert Lösungen für alle genannten Herausforderungen. Durch Gliederung des FFV-Prozesses in Teilsysteme sind verschiedene Designs in einfacher Weise simulierbar. In diesem Kontext erfolgt die Validierung eines bestimmtes Anlagenmodell auf Basis von Realdaten, was zum digitalen Zwilling führt. Zur Entwicklung neuer Transportmodelle verdampfender Flüssigkeitsfilme werden Bilanzgleichungen ausgewertet, sodass Systeme hyperbolischer partieller Differentialgleichungen entstehen. Mittels des Charakteristikenverfahrens gelingt eine Transformation in Totzeitgleichungen; letztere sind für Simulation und Reglerentwurf vorteilhaft. Pilotanlagenexperimente zur Identifikation und Validierung eines ausgewählten Modells unterstreichen die Eignung des Ansatzes, das gemessene Ein-/Ausgangsverhalten abzubilden. Zur Beantwortung regelungstechnischer Fragen wird ein einfaches Prozessmodell entwickelt, das Zuordnungsproblem gelöst und ein Mehrgrößenregelungskonzept entworfen.
Photoinjector-generation of a flat electron beam with transverse emittance ratio of 100
Creators: name: Piot, P.
name: Sun, Y. -E
name: Kim, K. -J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The generation of a flat electron beam directly from a photoinjector is an attractive alternative to the electron damping ring as envisioned for linear colliders. It also has potential applications to light sources such as the generation of ultra-short x-ray pulses or Smith-Purcell free electron lasers. In this Letter, we report on the experimental generation of a flat-beam with a measured transverse emittance ratio of $100\pm 20.2$ for a bunch charge of $\sim 0.5$ nC; the smaller measured normalized root-mean-square emittance is $\sim 0.4$ $μ$m and is limited by the resolution of our experimental setup. The experimental data, obtained at the Fermilab/NICADD Photoinjector Laboratory, are compared with numerical simulations and the expected scaling laws.
description: 5 pages, 3 figures
Yeast Protein Interactome Topology Provides Framework for Coordinated-Functionality
Creators: name: Valente, Andre X. C. N.
name: Cusick, Michael E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The architecture of the network of protein-protein physical interactions in Saccharomyces cerevisiae is exposed through the combination of two complementary theoretical network measures, betweenness centrality and `Q-modularity'. The yeast interactome is characterized by well-defined topological modules connected via a small number of inter-module protein interactions. Should such topological inter-module connections turn out to constitute a form of functional coordination between the modules, we speculate that this coordination is occurring typically in a pair-wise fashion, rather than by way of high-degree hub proteins responsible for coordinating multiple modules. The unique non-hub-centric hierarchical organization of the interactome is not reproduced by gene duplication-and-divergence stochastic growth models that disregard global selective pressures.
description: Final, revised version. 13 pages. Please see Nucleic Acids open access article for higher resolution figures
Empirical studies of noncompliance to behavioral therapy
Creators: name: Reynolds, Shawn Patrick
Publisher: name: University of British Columbia
Year: 2009

description: Two studies were performed to provide insight into the causes and effects of client noncompliance to behavioral treatments. An Analogue Study was performed in which undergraduate participants were taught about progressive muscle relaxation. Participants were randomly assigned to either a directive condition (which placed an emphasis on describing relaxation as an expert would) or a supportive condition (which emphasized incorporating relaxation into the person's daily life). Results indicated that participants in the supportive condition reported higher levels of enjoyment, satisfaction, and homework compliance than participants in the directive condition, but did not display significantly different levels of intrasession noncompliance. As well, a Clinical Study served as a naturalistic study involving six therapist-mother pairs where the mother was presenting with parenting difficulty and worked with the therapist during six sessions of behavioral parent training. This study surprisingly found that mothers were more likely to show noncompliance immediately following therapist supportive behavior than after directive behavior, but that overall levels of directive behavior resulted in less homework completion, and that overall levels of supportive therapist behavior corresponded with higher client satisfaction and lower overall levels of intra-session noncompliance. As well, therapists were more likely to respond to client noncompliance with supportive rather than directive behavior. Reconciliation of these results with previous research was discussed, along with limitations to these studies and potential areas for future research.
Collisional Properties of Cold Spin-Polarized Metastable Neon Atoms
Creators: name: Spoden, P.
name: Zinner, M.
name: Herschbach, N.
name: van Drunen, W.
name: Ertmer, W.
name: Birkl, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We measure the rates of elastic and inelastic two-body collisions of cold spin-polarized neon atoms in the metastable 3P2 state for 20^Ne and 22^Ne in a magnetic trap. From particle loss, we determine the loss parameter of inelastic collisions beta=6.5(18)x10^{-12} cm^3s^{-1} for 20^Ne and beta=1.2(3)x10^{-11}cm^3{s}^{-1} for 22^Ne. These losses are caused by ionizing (i.e. Penning) collisions %to more than and occur less frequently than for unpolarized atoms. This proves the suppression of Penning ionization due to spin-polarization. From cross-dimensional relaxation measurements, we obtain elastic scattering lengths of a=-180(40) a_0 for 20^Ne and a=+150(+80/-50) a_0 for 22^Ne, where a_0=0.0529 nm.
description: 4 pages, 3 figures
Ichnofabric of tidal deposit in Balikpapan Formation, Kutai Basin (In
Creators: name: Arifullah, Ery
name: Zaim, Yahdi
name: Aswan, Aswan
name: Djuhaeni, Djuhaeni
Publisher: name: Zenodo
Year: 2017

description: In Indonesia, the use of ichnology in sedimentological study is generally lacking. Ichnofabric aspects (e.g. bioturbation index, ichnofossil diversity, burrow diameter, penetration depth, ethology and tiering style) are a potential approach to scrutinize the environmental processes in tidal setting. In this context, penetration depth is used as an independent aspect and other ones as dependent aspects. The response of this approach to ancient tidal deposit has been studied for an outcrop of Balikpapan Formation, Kutai Basin (Indonesia). In this contribution, the nature examples of these applications are presented. The observation showing the penetration depth is unrelated to bioturbation index, ichnofossil diversity and ethology. Conversely, the correlation of penetration depth and burrow diameter and its disparity are indicated in the 4th tiering style (i.e. multiple of vertical partition, ethologies and ichnofossil diversity). The correlation may suggest the control of (i) biological aspect (e.g. consequences of deeper penetration by the bigger organism than the little one) and/or (ii) physico-chemical aspect (e.g. substrate consistency, water turbidity, oxygenation) in uppermost and lower tier. Skolithos and Ophiomorpha commonly is fabricated in uppermost tier. Conversely, Thallasinoides, Planolites, Teichicnus-Rhizocorallium and Chondrites are fabricated in the lower tier. Moreover, the ichnofabric model is an indicator of environmental conditions in tidal setting during colonization.
Peacock Exploration: A Lightweight Exploration for UAV using Control-Efficient Trajectory
Creators: name: Lee, EungChang Mason
name: Choi, Duckyu
name: Myung, Hyun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Unmanned Aerial Vehicles have received much attention in recent years due to its wide range of applications, such as exploration of an unknown environment to acquire a 3D map without prior knowledge of it. Existing exploration methods have been largely challenged by computationally heavy probabilistic path planning. Similarly, kinodynamic constraints or proper sensors considering the payload for UAVs were not considered. In this paper, to solve those issues and to consider the limited payload and computational resource of UAVs, we propose "Peacock Exploration": A lightweight exploration method for UAVs using precomputed minimum snap trajectories which look like a peacock's tail. Using the widely known, control efficient minimum snap trajectories and OctoMap, the UAV equipped with a RGB-D camera can explore unknown 3D environments without any prior knowledge or human-guidance with only O(logN) computational complexity. It also adopts the receding horizon approach and simple, heuristic scoring criteria. The proposed algorithm's performance is demonstrated by exploring a challenging 3D maze environment and compared with a state-of-the-art algorithm.
description: 10 pages
Spectral density of the Hubbard-model by the continued fraction method
Creators: name: Hayn, R.
name: Lombardo, P.
name: Matho, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present the continued fraction method (CFM) as a new microscopic approximation to the spectral density of the Hubbard model in the correlated metal phase away from half filling. The quantity expanded as a continued fraction is the single particle Green function. Leading spectral moments are taken into account through a set of real expansion coefficients, as known from the projection technique. The new aspect is to add further stages to the continued fraction, with complex coefficients, thus defining a terminator function. This enables us to treat the entire spectral range of the Green function on equal footing and determine the energy scale of the Fermi liquid quasiparticles by minimizing the total energy. The solution is free of phenomenological parameters and remains well defined in the strong coupling limit, near the doping controlled metal-insulator transition. Our results for the density of states agree reasonably with several variants of the dynamical mean field theory. The CFM requires minimal numerical effort and can be generalized in several ways that are interesting for applications to real materials.
description: 11 pages, 4 figures
Money, output and the United States’ inter-war financial crisis : an empirical analysis
Creators: name: Coe, Patrick James
Publisher: name: University of British Columbia
Year: 2009

description: In the first essay of this thesis I test long-run monetary neutrality (LRMN) using the longhorizon approach of Fisher and Seater [18]. Using United States' data on M 2 and Net National Product they reject LRMN for the sample 1869-1975. However, I show that this result is not robust to the use of the monetary base instead of M2. Nor is it robust to the use of United Kingdom data instead of United States data. These results are consistent with the interpretation that Fisher and Seater's result is a consequence of the financial crisis of the 1930s causing inside money and output to move together. Using a Monte Carlo study I show that Fisher and Seater's rejection of LRMN can also be accounted for by size distortion in their test statistic. This study also shows that at longer horizons, power is very low. In the second essay I consider the financial crisis of the 1930s in the United States as change in regime. Using a bivariate version of Hamilton's [24] Markov switching model I estimate the probability that the underlying regime was one of financial crisis at each point in time. I argue that there was a shift to the financial crisis regime following the first banking crisis of 1930. The crucial reform in ending the financial crisis appears to have been the introduction of the Federal Deposit Insurance Corporation in January 1934.1 also find that the time series of probabilities over the state of the financial sector contain marginal explanatory power for output fluctuations in the inter-war period. A problem when testing the null hypothesis of a linear model against the alternative of the Markov switching model is the presence of nuisance parameters. Consequently, the likelihood ratio test statistic does not possess the standard chi-squared distribution. In my third essay I perform a Monte Carlo experiment to explore the small sample properties of the pseudo likelihood ratio test statistic under the non-standard conditions. I find no evidence of size distortion. However, I do find that size adjusted power is very poor in small samples.
Low-cost Fredkin gate with auxiliary space
Creators: name: Liu, Wen-Qiang
name: Wei, Hai-Rui
name: Kwek, Leong-Chuan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Effective quantum information processing is tantamount in part to the minimization the quantum resources needed by quantum logic gates. Here, we propose an optimization of an n-controlled-qubit Fredkin gate with a maximum of 2n+1 two-qubit gates and 2n single-qudit gates by exploiting auxiliary Hilbert spaces. The number of logic gates required improves on earlier results on simulating arbitrary n-qubit Fredkin gates. In particular, the optimal result for one-controlled-qubit Fredkin gate (which requires three qutrit-qubit partial-swap gates) breaks the theoretical nonconstructive lower bound of five two-qubit gates. Furthermore, using an additional spatial-mode degree of freedom, we design a possible architecture to implement a polarization-encoded Fredkin gate with linear optical elements.
description: 11 pages,5 figures,1 table
Three-dimensional Electromagnetic Void Space
Creators: name: Xu, Changqing
name: Chu, Hongchen
name: Luo, Jie
name: Hang, Zhi Hong
name: Wu, Ying
name: Lai, Yun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report a realization of three-dimensional (3D) electromagnetic void space. Despite occupying a finite volume of space, such a medium is optically equivalent to an infinitesimal point where electromagnetic waves experience no phase accumulation. The 3D void space is realized by constructing all-dielectric 3D photonic crystals such that the effective permittivity and permeability vanish simultaneously, forming a six-fold Dirac-like point with Dirac-like linear dispersions at the center of the Brillouin Zone. We demonstrate, both theoretically and experimentally, that such a 3D void space exhibits unique properties and rich functionalities absent in any other electromagnetic media, such as boundary-control transmission switching and 3D perfect wave-steering mechanisms. Especially, contrary to the photonic "doping" effect in its two-dimensional counterpart, the 3D void space exhibits an amazing property of "impurity-immunity". Our work paves a road towards the realization of 3D void space where electromagnetic waves can be manipulated in unprecedented ways.
CS1302 Code Style Guide: v2019su
Creators: name: Cotterell, Michael E.
name: Barnes, Bradley J.
Publisher: name: Zenodo
Year: 2019

description: This document serves as the complete definition of CSCI 1302's coding standards for Java source code. For the purposes of this course, a Java source file is described as being in valid style if and only if it adheres to the rules herein. This document not only contains the specific guidelines that must be followed, but also includes editor configuration reccomendations as well information about how to use the checkstyle tool to check your code for compliance.
Semantic elicitation: Epistemic indefinites
Creators: name: Kipkoech, Linus
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of scopal possibilities of epistemic indefinites with respect to universal quantifiers, islands, etc.
Charge and Spin Currents Generated by Dynamical Spins
Creators: name: Takeuchi, Akihito
name: Tatara, Gen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate theoretically that a charge current and a spin current are generated by spin dynamics in the presence of spin-orbit interaction in the perturbative regime. We consider a general spin-orbit interaction including the spatially inhomogeneous case. Spin current due to spin damping is identified as one origin of generated charge current, but other contributions exist, such as the one due to an induced conservative field and the one arising from the inhomogeneity of spin-orbit interaction.
description: 14 pages, 4 figures
Nucleon longitudinal spin structure at COMPASS
Creators: name: Bedfer, Yann
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The nucleon spin structure is studied at COMPASS via the measurement of the spin dependent properties of deep inelastic muon-deuteron scattering. Both inclusive and semi-inclusive observables are investigated, with the emphasis put on the latter. This allows to access, in particular, the gluon polarization ($ΔG/G$) and the flavor decomposition of the quark helicity distributions. Results from measurements with longitudinal target polarization are presented, as well as uncertainties expected from the first 3 years of data taking.
description: 4 pages, 2 figures. Prepared for 10th International Baryons Conference (Baryons 2004). To be published with the conference proceedings in Nuclear Physics A
DEs-Experimental data
Creators: name: Dung, Tuan
Publisher: name: figshare
Year: 2021
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Dielectric elastomers (DEs) are polymer materials consisting of a network of polymer chains connected by covalent cross-links. It is challenging to model these DE materials owing to their nonlinear electromechanical coupling and time-dependent viscoelastic behavior. Therefore, this research conducted experiments with DE actuator under step and alternating voltage excitation. The experimental results can be used as an effective basic for model verification.
Stability of Holomorphic Foliations with Split Tangent Sheaf
Creators: name: Cukierman, Fernando
name: Pereira, Jorge Vitorio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 32S65; 32G13; 37F75

description: We show that the set of singular holomorphic foliations of the projective spaces with split tangent sheaf and with good singular set is open in the space of holomorphic foliations. As applications we present a generalization of a result by Camacho-Lins Neto about linear pull-back foliations, we give a criterium for the rigidity of $\mathcal L$-foliations of codimension $k \ge 2$ and prove a conjecture by Cerveau-Deserti about the rigidity of a codimension one $\mathcal L$-foliation of $\mathbb P^4$. These results allow us to exhibit some previously unknown irreducible components of the spaces of singular holomorphic foliations.
description: Final version, to appear in American Journal of Math