cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Soft X-ray components in the hard state of accreting black holes
Creators: name: D'Angelo, Caroline
name: Giannios, Dimitrios
name: Dullemond, Cornelis
name: Spruit, Henk
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent observations of two black hole candidates (GX 339-4 and J1753.5-0127) in the low-hard state (L_X/L_Edd ~ 0.003-0.05) suggest the presence of a cool accretion disk very close to the innermost stable orbit of the black hole. This runs counter to models of the low-hard state in which the cool disk is truncated at a much larger radius. We study the interaction between a moderately truncated disk and a hot inner flow. Ion-bombardment heats the surface of the disk in the overlap region between a two-temperature advection-dominated accretion flow and standard accretion disk, producing a hot (kT_e ~70 keV) layer on the surface of the cool disk. The hard X-ray flux from this layer heats the inner parts of the underlying cool disk, producing a soft X-ray excess. Together with interstellar absorption these effects mimic the thermal spectrum from a disk extending to the last stable orbit. The results show that soft excesses in the low-hard state are a natural feature of truncated disk models.
description: 12 pages, 8 figures, accepted by Astronomy & Astrophysics, reference added, minor typos corrected
Water evaporation from solute-containing aerosol droplets: effects of internal concentration and diffusivity profiles and onset of crust formation
Creators: name: Rezaei, Majid
name: Netz, Roland R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Saliva is primarily composed of water, but additionally includes a variety of organic and inorganic substances such as salt, proteins, peptides, mucins, virions, etc. The presence of such solutes affects the evaporation time of respiratory droplets that are sedimenting in air, and thereby the airborne transmission of infections. From solutions of the coupled heat-conduction and water-diffusion equations within the droplet and in the ambient vapor phase, we find that the solute-induced water vapor-pressure reduction considerably slows down the evaporation process and dominates the solute-concentration dependence of the droplet evaporation time. The evaporation-induced solute-concentration gradient near the droplet surface, which is accounted for using a two-stage evaporation model, is found to further intensify the slowing down of the drying process. On the other hand, the presence of solutes is found to reduce evaporation cooling of the droplet, which causes a slight decrease in the evaporation time. Overall, the first two effects are dominant, meaning that the droplet evaporation time increases in the presence of solutes. The solute-concentration dependence of the water diffusivity inside the droplet does not significantly change the evaporation time. Finally, crust formation on the droplet surface is found to increase the final equilibrium size of the droplet.
description: 40 pages, 8 figures
Data acquisition system for the TUNKA-133 array
Creators: name: Budnev, N. M.
name: Chvalaev, O. B.
name: Gress, O. A.
name: Kalmykov, N. N.
name: Kozhin, V. A.
name: Korosteleva, E. E.
name: Kuzmichev, L. A.
name: Lubsandorzhiev, B. K.
name: Mirgazov, R. R.
name: Navarra, G.
name: Panasyuk, M. I.
name: Pankov, L. V.
name: Prosin, V. V.
name: Ptuskin, V. S.
name: Semeney, Y. A.
name: Skurikhin, A. V.
name: Shaibonov, B. A.
name: Spiering, Ch.
name: Wischnewski, R.
name: Yashin, I. V.
name: Zablotsky, A. Z.
name: Zagorodnikov, A. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The new EAS Cherenkov array TUNKA-133, with about 1 km**2 sensitive area, is being installed in the Tunka Valley. The investigated energy range is 10**15-10**18 eV. It will consist of 133 optical detectors based on EMI9350 PMTs. Optical detectors are grouped into 19 clusters with 7 detectors each. The detectors are connected to the cluster box with RG-58 cables. Every PMT signal is digitized in the cluster box with 200 MHz FADC. The cluster boxes are connected to the data acquisition center with a 1 Gb/s optical link. A detailed description of the data acquisition system (DAQ) is presented.
description: 5 pages, 4 figures, Proceedings of the 10th ICATPP Conference,Como Italy, 8-12 October 2007
An examination of the collusion hypothesis using Canadian horizontal mergers
Creators: name: Smistad, Rikard Englund
Publisher: name: University of British Columbia
Year: 2010

description: The objective of this thesis is to examine the traditional structure-conduct-performance (SCP) paradigm as it applies to current Canadian merger policy and to Canadian merger activity during the period January 1964 to December 1983. The SCP paradigm postulates that with increasing industry concentration there will be increased incentives for firms within the industry to engage in anti-competitive, collusive behavior. Since successful collusion increases product prices, the SCP paradigm implies that horizontal mergers, which by definition increase concentration, will generate increased industry-wide profits. Thus, horizontal mergers should benefit not only the merger participants, but also the product market rivals of the merging firms. This hypothesis is examined using a sample of Canadian horizontal mergers in oil and gas, mining and manufacturing industries and a "control" sample of non-horizontal mergers taking place in the same industries. The results do not support the collusion hypothesis postulated by the SCP paradigm but are consistent with the theory that Canadian mergers are motivated by perceived economic efficiencies.
Balty, Slavjane, pribaltijskie Finny. Etnogenetičeskie processy
Creators: name: Udolph, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 4 (1997)
Employing Agent Beliefs during Fault Diagnosis for IEC 61499 Industrial Cyber-Physical Systems
Creators: name: Dowdeswell, Barry
name: Sinha, Roopak
name: Jarvis, Dennis
name: Jarvis, Jacqueline
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: We have come to rely on industrial-scale cyber-physical systems more and more to manage tasks and machinery in safety-critical situations. Efficient, reliable fault identification and management has become a critical factor in the design of these increasingly sophisticated and complex devices. Teams of co-operating software agents are one way to coordinate the flow of diagnostic information gathered during fault-finding. By wielding domain knowledge of the software architecture used to construct the system, agents build and refine their beliefs about the location and root cause of faults. This paper examines how agents constructed within the GORITE Multi-Agent Framework create and refine their beliefs. We demonstrate three different belief structures implemented within our Fault Diagnostic Engine, showing how each supports a distinct aspect of the agent's reasoning. Using domain knowledge of the IEC 61499 Function Block architecture, agents are able to examine and rigorously evaluate both individual components and entire subsystems.
description: Conference paper, 6 pages, 6 figures
Extending Density Matrix Embedding: A Static Two-Particle Theory
Creators: name: Scott, Charles J. C.
name: Booth, George H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We introduce Extended Density Matrix Embedding Theory (EDMET), a static quantum embedding theory explicitly self-consistent with respect to local two-body physics. This overcomes the biggest practical and conceptual limitation of more traditional one-body embedding methods, namely the lack of screening and treatment of longer-range interactions. This algebraic zero-temperature embedding augments a local interacting cluster model with a minimal number of bosons from a description of the full system correlations via the random phase approximation, and admits an analytic approach to build a self-consistent Coulomb-exchange-correlation kernel. For extended Hubbard models with non-local interactions, this leads to the accurate description of phase transitions, static quantities and dynamics. We also move towards ab initio systems via the Parriser--Parr--Pople model of conjugated coronene derivatives, finding good agreement with experimental optical gaps.
New X-ray observations of the hot subdwarf binary HD49798 / RXJ0648.0-4418
Creators: name: Mereghetti, S.
name: Pintore, F.
name: Rauch, T.
name: La Palombara, N.
name: Esposito, P.
name: Geier, S.
name: Pelisoli, I.
name: Rigoselli, M.
name: Schaffenroth, V.
name: Tiengo, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: HD49798 / RXJ0648.0-4418 is the only confirmed X-ray binary in which the mass donor is a hot subdwarf star of O spectral type and, most likely, it contains a massive white dwarf (1.28$\pm$0.05 M$_{\rm SUN}$) with a very fast spin period of 13.2 s. Here we report the results of new XMM-Newton pointings of this peculiar binary, carried out in 2018 and in 2020, together with a reanalysis of all the previous observations. The new data indicate that the compact object is still spinning-up at a steady rate of $(-2.17\pm0.01)\times10^{-15}$ s s$^{-1}$, consistent with its interpretation in terms of a young contracting white dwarf. Comparison of observations obtained at similar orbital phases, far from the ecplise, shows evidence for long term variability of the hard ($>$0.5 keV) spectral component at a level of $\sim$(70$\pm$20)\%, suggesting the presence of time-dependent inhomogeneities in the weak stellar wind of the HD49798 subdwarf. To investigate better the soft spectral component that dominates the X-ray flux from this system, we computed a theoretical model for the thermal emission expected from an atmosphere with element abundances and surface gravity appropriate for this massive white dwarf. This model gives a best fit with effective temperature of T$_{\rm eff}$=2.25$\times$10$^5$ K and an emitting area with radius of $\sim$1600 km, larger than that found with blackbody fits. This model also predicts a contribution of the pulsed emission from the white dwarf in the optical band significantly larger than previously thought and possibly relevant for optical variability studies of this system.
description: Accepted for publication on MNRAS
Daunothrips NG & AIN & RAFTI & LAU 2023, gen. n.
Creators: name: NG, Y. F.
name: AIN, N.
name: RAFTI, N. S.
name: LAU, K. H.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Thripidae
Daunothrips

description: Daunothrips gen. n.
(Figs 2–10)
Type species: D. striatus sp. n.
Head wider than long; mouthcone short, pointed at apex, with 3-segmented maxillary palpi. Ocellar setae I present, setae III arising at mid-point between hind ocelli (Fig. 2). Five pairs of postocular setae, parallel to compound eye, pairs I and II subequal in length to ocellar setae III. Antennae 8-segmented, segment I without median dorsal apical setae, segment II with rows of microtrichia on dorsal surface and none on ventral surface, III and IV with sense cones forked, III–VI with some rows of microtrichia on both dorsal and ventral surfaces (Fig. 9). Pronotum with two pairs of long posteroangular setae (Fig. 2). Mesonotum with median pair setae arising at middle of segment. Metascutum with median pair of setae at or close to anterior margin (Fig. 3). Prosternal ferna divided medially; basantra absent. Prospinasternum variable in thickness and slightly convex (Fig. 5). Mesosternum with sternopleural sutures incomplete. Spinula present on mesosternal and metasternal endofurca. Fore wing first vein with long gap between setae on distal half, second vein with 3 setae; clavus with one discal setae and 4 veinal setae (Fig. 10); posteromarginal fringe cilia straight, except a few cilia slightly undulated near base. Fore tibia without any stout apical setae; tarsi 2-segmented. Abdominal tergites median area covered with irregular sculpture lines, without ctenidia, II–VII with lobed craspedum medially, and lateral area with rows of microtrichia (Fig. 6); tergite II with 2 lateral setae. Setae S1 on tergites II–VII short, distance between their bases almost the same length as the setae. Tergite VIII posteromarginal comb complete; tergite IX without CPS, tergite X without longitudinal median split distally (Fig. 4); sternites without posteromarginal craspeda; II–VI with rows of microtrichia laterally, with 3 pairs of posteromarginal setae, all arising from posterior margin (Fig. 7); pleurotergites without discal setae. Ovipositor developed.
Comments.
Although generally similar to Scirtothrips, this new genus differs from others in the Scirtothrips genus-group in having a posteromarginal craspedum medially on tergites II–VII. Moreover, abdominal tergites II–VIII are covered medially with irregular lines.
description: Published as part of NG, Y. F., AIN, N., RAFTI, N. S. & LAU, K. H., 2023, A new genus and species of Scirtothrips genus-group (Thysanoptera, Thripidae), with two new species of Scirtothrips, from Dipterocarp Forest canopy in Malaysia, pp. 586-594 in Zootaxa 5306 (5) on pages 587-588, DOI: 10.11646/zootaxa.5306.5.6, http://zenodo.org/record/8073305
Tropilaelaps mercedesae Anderson & Morgan 2007
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 63. Tropilaelaps mercedesae Anderson & Morgan, 2007
 Host/Habitat. Apis mellifera (Western honey bee).
 Distribution. Yuncheng (as Yunchen [sic]), Changzhi, Yangquan (Luo et al. 2011).
 Remarks. The Tropilaelaps mite in China had long been incorrectly called Tropilaelaps clareae. Its identity was recently clarified by Luo et al. (2011). There is only one species, T. mercedesae present in China.
 Macrochelidae Vitzthum, 1930 (8 species in 2 genera)
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 12, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
The Period-Modulated Harmonic Locked Loop (PM-HLL): A low-effort algorithm for rapid time-domain multi-periodicity estimation
Creators: name: Hohmann, Volker
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Many speech and music analysis and processing schemes rely on an estimate of the fundamental frequency $f_0$ of periodic signal components. Most established schemes apply rather unspecific signal models such as sinusoidal models to the estimation problem, which may limit time resolution and estimation accuracy. This study proposes a novel time-domain locked-loop algorithm with low computational effort and low memory footprint for $f_0$ estimation. The loop control signal is directly derived from the input time signal, using a harmonic signal model. Theoretically, this allows for a noise-robust and rapid $f_0$ estimation for periodic signals of arbitrary waveform, and without the requirement of a prior frequency analysis. Several simulations with short signals employing different types of periodicity and with added wide-band noise were performed to demonstrate and evaluate the basic properties of the proposed algorithm. Depending on the Signal-to-Noise Ratio (SNR), the estimator was found to converge within 3-4 signal repetitions, even at SNR close to or below 0dB. Furthermore, it was found to follow fundamental frequency sweeps with a delay of less than one period and to track all tones of a three-tone musical chord signal simultaneously. Quasi-periodic sounds with shifted harmonics as well as signals with stochastic periodicity were robustly tracked. Mean and standard deviation of the estimation error, i.e., the difference between true and estimated $f_0$, were at or below 1 Hz in most cases. The results suggest that the proposed algorithm may be applicable to low-delay speech and music analysis and processing.
description: Preprint (2nd version), accepted for publication at acta acustica
Multiband and array effects in matter-wave-based waveguide QED
Creators: name: Lanuza, Alfonso
name: Kwon, Joonhyuk
name: Kim, Youngshin
name: Schneble, Dominik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recent experiments on spontaneous emission of atomic matter waves open a new window into the behavior of quantum emitters coupled to a waveguide. Here we develop an approach based on infinite products to study this system theoretically, without the need to approximate the band dispersion relation of the waveguide. We solve the system for a one-dimensional array of one, multiple and an infinite number of quantum emitters and compare with the experiments. This leads to a detailed characterization of the decay spectrum, with a family of in-gap bound states, new mechanisms for enhanced Markovian emission different from superradiance, and the emergence of matter-wave polaritons.
Glyptholaspis confusa Foa 1900
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 64. Glyptholaspis confusa (Foà, 1900)
 Host/Habitat. Salix sp. (willow) bark.
 Distribution. Datong (Bai & Ma 2013).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 12, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
Effect of the density of pillar-patterned substrates on the contact mechanics: Transition from top to mixed contact with a detailed pressure-field description
Creators: name: Ledesma-Alonso, Rene
name: Raphael, Elie
name: Restagno, Frederic
name: Poulard, Christophe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Different contact regimes between a spherical lens and a periodically patterned substrate are observed, when they are pressed against each other. Top contact occurs when only the highest substrate sections touch the lens, whereas mixed contact implies that both the highest and the lowest substrate sections come into contact with the lens. In this paper, we study how the pattern density of the substrate, along with its physical properties and those of the lens, determine the transition from top contact to mixed contact. Experiments and numerical simulations had been performed, as complementary approaches to obtain data, and a theoretical analysis has been developed to gain insight on the effect of the physical parameters on the contact transition. As a result, a phase diagram is presented, in terms of the load and the contact radius, that combines the observations of the three approaches (experimental, numerical, and theoretical), unveiling the boundaries of three contact regimes: (1) deterministic-driven contact, (2) top contact, and (3) mixed contact.
description: 23 pages, 5 figures
Applying the Wang-Landau Algorithm to Lattice Gauge Theory
Creators: name: Bringoltz, Barak
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We implement the Wang-Landau algorithm in the context of SU(N) lattice gauge theories. We study the quenched, reduced version of the lattice theory and calculate its density of states for N=20,30,40,50. We introduce a variant of the original algorithm in which the weight function used in the update does not asymptote to a fixed function, but rather continues to have small fluctuations which enhance tunneling. We formulate a method to evaluate the errors in the density of states, and use the result to calculate the dependence of the average action density and the specific heat on the `t Hooft coupling lambda. This allows us to locate the coupling lambda_t at which a strongly first order transition occurs in the system. For N=20 and 30 we compare our results to those obtained using Ferrenberg-Swendsen multi-histogram reweighting and find agreement with errors of 0.2 % or less. Extrapolating our results to N=oo we find 1/lambda_t = 0.3148(2). We remark on the significance of this result for the validity of quenched large-$N$ reduction of SU(N) lattice gauge theories.
description: 40 pages, 13 figures. Added discussions on the way the Wang-Landau algorithm that we use differs from other implementations in the literature, added references, corrected typos, published version
An optimization problem with volume constrain in Orlicz spaces
Creators: name: Martinez, Sandra
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the optimization problem of minimizing $\int_ΩG(|\nabla u|) dx$ in the class of functions $W^{1,G}(Ω)$, with a constrain on the volume of $\{u>0\}$. The conditions on the function $G$ allow for a different behavior at 0 and at $\infty$. We consider a penalization problem, and we prove that for small values of the penalization parameter, the constrained volume is attained. In this way we prove that every solution $u$ is locally Lipschitz continuous and that the free boundary, $\partial\{u>0\}\cap Ω$, is smooth.
The Collimated Jet Source in IRAS 16547-4247: Time Variation, Possible Precession, and Upper Limits to the Proper Motions Along the Jet Axis
Creators: name: Rodriguez, Luis F.
name: Moran, James M.
name: Franco-Hernandez, Ramiro
name: Garay, Guido
name: Brooks, Kate J.
name: Mardones, Diego
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The triple radio source detected in association with the luminous infrared source IRAS 16547-4247 has previously been studied with high angular resolution and high sensitivity with the Very Large Array (VLA) at 3.6-cm wavelength. In this paper, we present new 3.6 cm observations taken 2.68 years after the first epoch that allow a search for variability and proper motions, as well as the detection of additional faint sources in the region. We do not detect proper motions along the axis of the outflow in the outer lobes of this source at a 4-$σ$ upper limit of $\sim$160 km s$^{-1}$. This suggests that these lobes are probably working surfaces where the jet is interacting with a denser medium. However, the brightest components of the lobes show evidence of precession, at a rate of $0\rlap.^\circ08$ yr$^{-1}$ clockwise in the plane of the sky. It may be possible to understand the distribution of almost all the identified sources as the result of ejecta from a precessing jet. The core of the thermal jet shows significant variations in flux density and morphology. We compare this source with other jets in low and high mass young stars and suggest that the former can be understood as a scaled-up version of the latter.
description: 26 pages, 9 figures
Macrocheles decoloratus Koch 1839
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 65. Macrocheles decoloratus (Koch, 1839)
 Host/Habitat. Rat hole, passer sparrow’s nest. Distribution. Taiyuan, Wutai (Tian 1984).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 12, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
A converse approach to the calculation of NMR shielding tensors
Creators: name: Thonhauser, T.
name: Ceresoli, D.
name: Mostofi, Arash A.
name: Marzari, Nicola
name: Resta, R.
name: Vanderbilt, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We introduce an alternative approach to the first-principles calculation of NMR shielding tensors. These are obtained from the derivative of the orbital magnetization with respect to the application of a microscopic, localized magnetic dipole. The approach is simple, general, and can be applied to either isolated or periodic systems. Calculated results for simple hydrocarbons, crystalline diamond, and liquid water show very good agreement with established methods and experimental results.
description: submitted to Phys. Rev. Lett; second half completely rewritten to address referee's comments
Mitochondrial proteomics: analysis of a whole mitochondrial extract with two-dimensional electrophoresis
Creators: name: Rabilloud, Thierry
Publisher: name: arXiv
Year: 2008
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Mitochondria are complex organelles, and their proteomics analysis requires a combination of techniques. The emphasis in this chapter is made first on mitochondria preparation from cultured mammalian cells, then on the separation of the mitochondrial proteins with two-dimensional electrophoresis (2DE), showing some adjustment over the classical techniques to improve resolution of the mitochondrial proteins. This covers both the protein solubilization, the electrophoretic part per se, and the protein detection on the gels, which makes the interface with the protein identification part relying on mass spectrometry.
Synthetic gravitational horizons in low-dimensional quantum matter
Creators: name: Morice, Corentin
name: Moghaddam, Ali G.
name: Chernyavsky, Dmitry
name: van Wezel, Jasper
name: Brink, Jeroen van den
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a class of lattice models realizable in a wide range of setups whose low-energy dynamics exactly reduces to Dirac fields subjected to (1+1)-dimensional gravitational backgrounds, including (anti-)de Sitter spacetime. Wave-packets propagating on the lattice exhibit an eternal slowdown for power-law position-dependent hopping integrals $t(x)\propto x^γ$ when $γ\geq 1$, signalling the formation of black hole event horizons. For $γ< 1$ instead the wave-packets behave radically different and bounce off the horizon. We show that the eternal slowdown relates to a zero-energy spectral singularity of the lattice model and that the semiclassical wave packets trajectories coincide with the geodesics on (1+1)D dilaton gravity, paving the way for new and experimentally feasible routes to mimic black hole horizons and realize (1+1)D spacetimes as they appear in certain gravity theories.
description: 6 pages, 5 figures
SerumRNN: Step by Step Audio VST Effect Programming
Creators: name: Mitcheltree, Christopher
name: Koike, Hideki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Learning to program an audio production VST synthesizer is a time consuming process, usually obtained through inefficient trial and error and only mastered after years of experience. As an educational and creative tool for sound designers, we propose SerumRNN: a system that provides step-by-step instructions for applying audio effects to change a user's input audio towards a desired sound. We apply our system to Xfer Records Serum: currently one of the most popular and complex VST synthesizers used by the audio production community. Our results indicate that SerumRNN is consistently able to provide useful feedback for a variety of different audio effects and synthesizer presets. We demonstrate the benefits of using an iterative system and show that SerumRNN learns to prioritize effects and can discover more efficient effect order sequences than a variety of baselines.
description: Audio samples of the system can be listened to at bit.ly/serum_rnn
Quick NAT: High performance NAT system on commodity platforms
Creators: name: Li, Junfeng
name: Li, Dan
name: Huang, Yukai
name: Cheng, Yang
name: Ling, Ruilin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: NAT gateway is an important network system in today's IPv4 network when translating a private IPv4 address to a public address. However, traditional NAT system based on Linux Netfilter cannot achieve high network throughput to meet modern requirements such as data centers. To address this challenge, we improve the network performance of NAT system by three ways. First, we leverage DPDK to enable polling and zero-copy delivery, so as to reduce the cost of interrupt and packet copies. Second, we enable multiple CPU cores to process in parallel and use lock-free hash table to minimize the contention between CPU cores. Third, we use hash search instead of sequential search when looking up the NAT rule table. Evaluation shows that our Quick NAT system significantly improves the performance of NAT on commodity platforms.
Search for Anomalous Production of Multilepton Events in p-pbar Collisions at sqrt(s) = 1.96 TeV
Creators: name: CDF Collaboration
name: Abulencia, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report a search for the anomalous production of events with multiple charged leptons in p-pbar collisions at sqrt{s} = 1.96 TeV using a data sample corresponding to an integrated luminosity of 346 pb^{-1} collected by the CDF II detector at the Fermilab Tevatron. The search is divided into three-lepton and four-or-more-lepton data samples. We observe six events in the three-lepton sample and zero events in the >=4-lepton sample. Both numbers of events are consistent with standard model background expectations. Within the framework of an R-parity violating supergravity model, the results are interpreted as mass limits on the lightest neutralino and chargino particles. For one particular choice of model parameters, the limits are M_neutralino > 110 GeV/c^{2} and M_chargino > 203 GeV/c^{2} at 95% confidence level; the variation of these mass limits with model parameters is presented.
description: 1 revtex file, 3 eps figures, 1 author list, 4 files needed for revtex (for completeness)
Ferromagnetism in a Semiconductor with Mobile Carriers via Low-Level Nonmagnetic Doping
Creators: name: Lei, Bing-Hua
name: Singh, David J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that doped cubic iron pyrite, which is a diamagnetic semiconductor, becomes ferromagnetic when $p$-type doped. We furthermore find that this material can exhibit high spin polarization both for tunneling and transport devices. These results are based on first principles electronic structure and transport calculations. This illustrates the use of $p$-type doping without magnetic impurities as a strategy for obtaining ferromagnetic semiconducting behavior, with implications for spintronic applications that require both magnetic ordering and good mobility. This is a combination that has been difficult to achieve by doping semiconductors with magnetic impurities. We show that phosphorus and arsenic may be effective dopants for achieving this behavior.
'Fuelled' motion: phoretic motility and collective behaviour of active colloids
Creators: name: Illien, Pierre
name: Golestanian, Ramin
name: Sen, Ayusman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Designing microscopic and nanoscopic self-propelled particles and characterising their motion has become a major scientific challenge over the past decades. To this purpose, phoretic effects, namely propulsion mechanisms relying on local field gradients, have been the focus of many theoretical and experimental studies. In this review, we adopt a tutorial approach to present the basic physical mechanisms at stake in phoretic motion, and describe the different experimental works that lead to the fabrication of active particles based on this principle. We also present the collective effects observed in assemblies of interacting active colloids, and the theoretical tools that have been used to describe phoretic and hydrodynamic interactions.
Detection of acoustic events in Lavender for measuring the xylem vulnerability to embolism and cellular damages
Creators: name: Lamacque, Lia
name: Sabin, Florian
name: Améglio, Thierry
name: Herbette, Stéphane
name: Charrier, Guillaume
Publisher: name: arXiv
Year: 2021
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Acoustic emission analysis is a promising technique to investigate the physiological events leading to drought-induced injuries and mortality. However, the nature and the source of the acoustic emissions are not fully understood and make the use of this technique difficult as a direct measure of the loss of xylem hydraulic conductance. In this study, acoustic emissions were recorded during severe dehydration in lavender plants and compared to the dynamics of embolism development and cell lysis. The timing and characteristics of acoustic signals from two independent recording systems were compared by principal component analysis. In parallel, changes in water potential, branch diameter, loss of hydraulic conductance and electrolyte leakage were measured to quantify drought-induced damages. Two distinct phases of acoustic emissions were observed during dehydration: the first one associated with a rapid loss of diameter and a significant increase in loss of xylem conductance (90%) and the second one with a significant increase in electrolyte leakage and slower diameter changes. This second phase corresponds to a complete loss of recovery capacity. The acoustic signals of both phases were discriminated by the third and fourth principal components. The loss of hydraulic conductance during the first acoustic phase suggests the hydraulic origin of these signals (i.e. cavitation events). For the second phase, the signals showed much higher variability between plants and acoustic systems suggesting that the sources of these signals may be plural, although likely including cellular damage. A simple algorithm was developed to discriminate hydraulic-related acoustic signals from other sources, allowing the reconstruction of dynamic hydraulic vulnerability curves. However, hydraulic failure precedes cellular damage and lack of whole plant recovery is associated to these latter.
description: 6 figures, 1 table, + 2 supplementary figures and 1 supplementary table
Mechanochemical action of the dynamin protein
Creators: name: Lenz, Martin
name: Prost, Jacques
name: Joanny, Jean-François
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Dynamin is a ubiquitous GTPase that tubulates lipid bilayers and is implicated in many membrane severing processes in eukaryotic cells. Setting the grounds for a better understanding of this biological function, we develop a generalized hydrodynamics description of the conformational change of large dynamin-membrane tubes taking into account GTP consumption as a free energy source. On observable time scales, dissipation is dominated by an effective dynamin/membrane friction and the deformation field of the tube has a simple diffusive behavior, which could be tested experimentally. A more involved, semi-microscopic model yields complete predictions for the dynamics of the tube and possibly accounts for contradictory experimental results concerning its change of conformation as well as for plectonemic supercoiling.
description: 17 pages, 4 figures; typos corrected, reference added
Nonlinear thermal control in an N-terminal junction
Creators: name: Segal, Dvira
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate control over heat flow in an N-terminal molecular junction. Using simple model Hamiltonians we show that the heat current through two terminals can be tuned, switched, and amplified, by the temperature and coupling parameters of external gating reservoirs. We discuss two models: A fully harmonic system, and a model incorporating anharmonic interactions. For both models the control reservoirs induce thermal fluctuations of the transition elements between molecular vibrational states. We find that a fully harmonic model does not show any controllability, while for an anharmonic system the conduction properties of the junction strongly depend on the parameters of the gates. Realizations of the model system within nanodevices and macromolecules are discussed.
A Holographic Superfluid Symphony
Creators: name: Arean, Daniel
name: Baggioli, Matteo
name: Grieninger, Sebastian
name: Landsteiner, Karl
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the hydrodynamic excitations of backreacted holographic superfluids by computing the full set of quasinormal modes (QNMs) at finite momentum and matching them to the existing hydrodynamic theory of superfluids. Additionally, we analyze the behavior of the low-energy excitations in real frequency and complex momentum, going beyond the standard QNM picture. Finally, we carry out a novel type of study of the model by computing the support of the hydrodynamic modes across the phase diagram. We achieve this by determining the support of the corresponding QNMs on the different operators in the dual theory, both in complex frequency and complex momentum space. From the support, we are able to reconstruct the hydrodynamic dispersion relations using the hydrodynamic constitutive relations. Our analysis rules out a role-reversal phenomenon between first and second sound in this model, contrary to results obtained in a weakly coupled field theory framework.
description: v3: matches version published in JHEP; v2: added fig. 7 and discussion about incoherent limit plus new appendix C; 26 pages + 10, 15 figures
Macrocheles glaber Muller 1860
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 66. Macrocheles glaber (Müller, 1860)
 Host/Habitat. Pig hair.
 Distribution. Pingding: Niangziguan (Tian 1984).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 13, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
The dynamics of capital structure choice
Creators: name: Yu, Albert Chun-Ming
Publisher: name: University of British Columbia
Year: 2010

description: This thesis employs two-period state-contingent model based upon the "tax shield plus bankruptcy costs" approach to examine the dynamic capital structure decision. By allowing recapitalization at the end of period one, we can analyse the dynamics of the firm's capital structure choice. Also, the effect of a call provision on bonds can be examined. Simulated results show that the firm will recapitalize at the end of period one only if the gain in firm value, with- or ex-dividend, resulting from recapitalization exceeds the after-tax flotation costs. There exists a tolerable recapitalization boundary within which the firm will not recapitalize. This implies that the empirically observed capital structure is not necessarily at the acme of the firm value function, as most empirical studies assume. Another important result is that a call provision on bonds may be wealth reducing; the call provision may reduce the wealth of shareholders by inducing recapitalization in states which is suboptimal if there is no call provision, and incurs flotation costs which could have been avoided. The gain in firm value resulting from recapitalization may be too small to justify the extra flotation costs and thus reduces the overall firm value.
Boris Meissner, Die baltischen Staaten im weltpolitischen und völkerrechtlichen Wandel. Beiträge 1954-1994
Creators: name: Meyer, Klaus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 4 (1998)
Macrocheles matrius Hull 1925
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 67. Macrocheles matrius Hull, 1925
 Host/Habitat. Meriones unguiculatus (Mongolian gerbil) hole. Distribution. Taiyuan, Wutai (Tian 1984).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 13, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
The PG-RQS survey. Building the radio spectral distribution of radio-quiet quasars. I. The 45-GHz data
Creators: name: Baldi, R. D.
name: Laor, A.
name: Behar, E.
name: Horesh, A.
name: Panessa, F.
name: McHardy, I.
name: Kimball, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin of the radio emission in radio-quiet quasars (RQQs) remains unclear. Radio emission may be produced by a scaled-down version of the relativistic jets observed in radio-loud (RL) AGN, an AGN-driven wind, the accretion disc corona, AGN photon-ionisation of ambient gas (free-free emission), or star formation (SF). Here, we report a pilot study, part of a radio survey (`PG-RQS') aiming at exploring the spectral distributions of the 71 Palomar-Green (PG) RQQs: high angular resolution observations ($\sim$50 mas) at 45~GHz (7 mm) with the Karl G. Jansky Very Large Array of 15 sources. Sub-mJy radio cores are detected in 13 sources on a typical scale of $\sim$100 pc, which excludes significant contribution from galaxy-scale SF. For 9 sources the 45-GHz luminosity is above the lower frequency ($\sim$1-10 GHz) spectral extrapolation, indicating the emergence of an additional flatter-spectrum compact component at high frequencies. The X-ray luminosity and black hole (BH) mass, correlate more tightly with the 45-GHz luminosity than the 5-GHz. The 45 GHz-based radio-loudness increases with decreasing Eddington ratio and increasing BH mass M$_{\rm BH}$. These results suggest that the 45-GHz emission from PG RQQs nuclei originates from the innermost region of the core, probably from the accretion disc corona. Increasing contributions to 45-GHz emission from a jet at higher M$_{\rm BH}$ and lower Eddington ratios and from a disc wind at large Eddington ratios are still consistent with our results. Future full radio spectral coverage of the sample will help us investigating the different physical mechanisms in place in RQQ cores.
description: Accepted for publication on MNRAS (17 pages, 9 figures)
Classification, Slippage, Failure and Discovery
Creators: name: Böhlen, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This text argues for the potential of machine learning infused classification systems as vectors for a technically-engaged and constructive technology critique. The text describes this potential with several experiments in image data creation and neural network based classification. The text considers varying aspects of slippage in classification and considers the potential for discovery - as opposed to disaster - stemming from machine learning systems when they fail to perform as anticipated.
Stable and efficient FEM-BEM coupling with OSRC regularisation for acoustic wave transmission
Creators: name: Wout, Elwin van 't
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The finite element method (FEM) and the boundary element method (BEM) can numerically solve the Helmholtz system for acoustic wave propagation. When an object with heterogeneous wave speed or density is embedded in an unbounded exterior medium, the coupled FEM-BEM algorithm promises to combine the strengths of each technique. The FEM handles the heterogeneous regions while the BEM models the homogeneous exterior. Even though standard FEM-BEM algorithms are effective, they do require stabilisation at resonance frequencies. One such approach is to add a regularisation term to the system of equations. This algorithm is stable at all frequencies but also brings higher computational costs. This study proposes a regulariser based on the on-surface radiation conditions (OSRC). The OSRC operators are also used to precondition the boundary integral operators and combined with incomplete LU factorisations for the volumetric weak formulation. The proposed preconditioning strategy improves the convergence of iterative linear solvers significantly, especially at higher frequencies.
An examination of the factors affecting international container traffic
Creators: name: Valdes, Gonzalo C.
Publisher: name: University of British Columbia
Year: 2010

description: The objective of this study is to examine the factors affecting international container traffic, with special reference to the Port of Vancouver. In order to achieve this objective, a number of topics are examined. First, background information about West Coast container ports and trade flows and patterns of economic activity are provided. This is followed by an examination of the transportation system concept and by a presentation of important characteristics of current container ports. Then, the economics of container vessel size are discussed. The present institutional frameworks in Canada and in the United States are examined, followed by an examination of current trends of shipping services that may have an impact on container movements through the West Coast. Some of the factors that are relevant to shipping lines when assessing different route configurations are identified and a computer model is used to evaluate the attractiveness of two different configurations involving ports in the Pacific Northwest. The sensitivity of route choice to different parameters is examined. Finally, general conclusions are presented. It is suggested that the development of sophisticated intermodal services in the United States may have an important impact in the routing of Canadian cargo through American ports; the trend towards an increase in vessel size is also a factor that favours the concentration of services through the United States.