cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Near-infrared Variability among YSOs in the Star Formation Region Cygnus OB7
Creators: name: Wolk, Scott J.
name: Rice, Thomas S.
name: Aspin, Colin A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of near-infrared time-series photometry in J, H, and K bands for about 100 epochs of a 1 square degree region of the Lynds 1003/1004 dark cloud in the Cygnus OB7 region. Augmented by data from the Wide-field Infrared Survey Explorer (WISE), we identify 96 candidate disk bearing young stellar objects (YSOs) in the region. Of these, 30 are clearly Class I or earlier. Using the Wide-Field imaging CAMera (WFCAM) on the United Kingdom InfraRed Telescope (UKIRT), we were able to obtain photometry over three observing seasons, with photometric uncertainty better than 0.05 mag down to J ~17. We study detailed light curves and color trajectories of ~50 of the YSOs in the monitored field. We investigate the variability and periodicity of the YSOs and find the data are consistent with all YSOs being variable in these wavelengths on time scales of a few years. We divide the variability into four observational classes: 1) stars with periodic variability stable over long timescales, 2) variables which exhibit short-lived cyclic behavior, 3) long duration variables, and 4) stochastic variables. Some YSO variability defies simple classification. We can explain much of the observed variability as being due to dynamic and rotational changes in the disk, including an asymmetric or changing blocking fraction, changes to the inner disk hole size, as well as changes to the accretion rate. Overall, we find that the Class I:Class II ratio of the cluster is consistent with an age of < 1Myr, with at least one individual, wildly varying, source ~ 100,000 yr old. We have also discovered a Class II eclipsing binary system with a period of 17.87 days.
description: ApJ accepted: 44 pages includes 5 tables and 16 figures. Some figures condensed for Astro/ph
title: Operation and Process Control Development for a Pilot-Scale Leaching and Solvent Extraction Circuit Recovering Rare Earth Elements from Coal-Based Sources
Creators: name: Addo, Douglas
Publisher: name: University of Kentucky Libraries
Year: 2019

description: The US Department of Energy in 2010 has identified several rare earth elements as critical materials to enable clean technologies. As part of ongoing research in REEs (rare earth elements) recovery from coal sources, the University of Kentucky has designed, developed and is demonstrating a ¼ ton/hour pilot-scale processing plant to produce high-grade REEs from coal sources. Due to the need to control critical variables (e.g. pH, tank level, etc.), process control is required. To ensure adequate process control, a study was conducted on leaching and solvent extraction control to evaluate the potential of achieving low-cost REE recovery in addition to developing a process control PLC system. The overall operational design and utilization of Six Sigma methodologies is discussed. Further, the application of the controls design, both procedural and electronic for the control of process variables such as pH is discussed. Variations in output parameters were quantified as a function of time. Data trends show that the mean process variable was maintained within prescribed limits. Future work for the utilization of data analysis and integration for data-based decision-making will be discussed.
description: Copyright © Douglas Kweku Addo 2019
Antikaons and higher order couplings in relativistic-mean field study of neutron stars
Creators: name: Gupta, Neha
name: Arumugam, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the role of higher order couplings, along with the condensation of antikaons ($K^-$ and $\bar K^0$), on the properties of neutron star (NS). We employ extended versions of the relativistic mean-field model, in which kaon-nucleon and nucleon-nucleon interactions are taken on the same footing. We find that the onset of condensation of $K^-$ and $\bar K^0$ highly depends not only on the strength of optical potential but also on the new couplings. The presence of antikaons leads to a softer equation of state and makes the neutron star core symmetric and lepton-deficient. We show that these effects strongly influence the mass-radius relation as well as the composition of neutron star. We also show that the recently observed 1.97$\pm$.04 solar mass NS can be explained in three ways: (i) a stiffer EoS with both antikaons, (ii) a relatively soft EoS with $K^-$ and (iii) a softer EoS without antikaons.
title: Wolfgang Hübener: Absatzgebiete frühgeschichtlicher Töpfereien in der Zone nördlich der Alpen. Beiträge zur Keramik der Merowingerzeit. Antiquitas Reihe 3 Bd. 6. Bonn 1969
Creators: name: Koch, Ursula
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Wolfgang Hübener: Absatzgebiete frühgeschichtlicher Töpfereien in der Zone nördlich der Alpen. Beiträge zur Keramik der Merowingerzeit. Antiquitas Reihe 3 Bd. 6. Rudolf Habelt Verlag, Bonn 1969. Textband IX, 308 Seiten, Tafelband 240 Tafeln, 69 (Verbreitungs-)Karten.
Pulsatilla halleri AU.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: F. Halleri AU. Cat. 394. Bis 3415 m. l: Luisin (J.); Emaney (J.); Fontanabran (J.). - 3: Pointe Rande und Proz Zon ob Trient (F.); Col de Fenetre de Ferret (J.); Breney im Val de Bagnes (J.); Alpen von Riddes (Besse); LesDix (J.); PointesdeNava (Binz); Pipialp imTurtmanntal (J.); ob Törbel (Stebler); Oberrothorn bei Zermatt, 3415m (Braun-Blanquet 1919). - 3a: Bistinen (J.). - 4: Geisspfad im Binntal (Binz); Grüngufergrat an der Furka (Schmid). Var. flavescens (Hackel) -3: Gornergrat ob Zermatt, Südseite (Wilczek); ob der Britanniahütte (Saas), etwa 3050 m (Oberson). - 3a: Klusmatten-Sirwolten (Becherer). Var. intermedia Stehler et Schröter (F. rupicaprina var. intermedia Stebler et Schröter) - 2: Montagne de Fully (Garns); Gipfel des Chavalard (idem). - 3: Valsorey (Guyot); zwischen dem Rottal und dem Weisstal ob IVtattmark (Saas), etwa 2600m (Merxmüller). - 4: Moosfluh ob der Riederalp (Lüdi). Zwischenformen F. Halleri-rupicaprina nach de Litardiere (Lit. 1922) auch im Simplongebiet (Distr. 3 und 3a): StaldhornundHübschhorn(F.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A comparative analysis of conventional internal combustion vehicle and electric buses in Austin, Texas
Creators: name: Fuentes-Afflick, Tomás
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Greenhouse gas emissions
Sustainability
Electric vehicles
Electric buses
Life cycle assessment

description: This thesis project examines the life cycle and environmental impact of carbon dioxide (CO₂) and greenhouse gas emissions related to the city of Austin, Texas’ transition from conventional diesel buses to electric vehicle buses. I utilized a life cycle assessment model derived from two data sources. I conducted a comprehensive literature review to analyze the energy intensity and greenhouse gas emissions of electric buses and used this information to estimate the effects and externalities of a municipal program that incentivizes individuals to change their form of transportation from private vehicles to public buses. Second, I obtained data from the City of Austin and Austin Capital Metro and analyzed ridership and vehicles miles traveled (VMT) to estimate energy intensity, emissions per passenger mile traveled (PMT), and emissions per vehicle mile traveled. Because electric energy is derived from multiple sources, I considered various electricity production scenarios, including the Austin Energy mix, Electric Reliability Council of Texas’s (ERCOT) electricity production makeup, and scenarios using combinations of renewables, fossil fuels and nuclear energy. The goal was to utilize Austin as an example for other American cities that are considering a transition from diesel buses to electric buses. The analysis showed that electric buses significantly outperformed their diesel counterparts, on a CO2-equivalent basis, using every electricity mix that was evaluated, for the empty-load, half-load and full-load scenarios. For the electric buses, electricity mixes that used more renewable energy sources (i.e. wind, solar and hydropower) had lower emissions than other options, such as nuclear, coal and natural gas. The results of this thesis project will be available to policymakers and other stakeholders who are engaged in decisions about enhancing the environmental sustainability of Austin’s transit system. I hope that decision-makers within Austin Energy’s and ERCOT’s leadership will find this report valuable. I would like to share the results with other cities, in the hopes of encouraging transportation systems throughout the country to consider large-scale change to advance sustainability and mitigate the transportation-related aspects of climate change.
title: Kurt Gerhardt: Läuterhofen. Zur Anthropologie des Reibengräberfeldes in der Flur „Geissäcker" und des Friedhofes bei St. Martin. München 1975
Creators: name: Pahl, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Kurt Gerhardt: Läuterhofen. Zur Anthropologie des Reibengräberfeldes in der Flur „Geissäcker" und des Friedhofes bei St. Martin. München 1975. Kommissionsverlag Kiefhaber & Eibl, München 1975. 77 Seiten, 34 Tafeln.
Anisotropic conductivity and weak localization in HgTe quantum well with normal energy spectrum
Creators: name: Minkov, G. M.
name: Germanenko, A. V.
name: Rut, O. E.
name: Sherstobitov, A. A.
name: Dvoretski, S. A.
name: Mikhailov, N. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The results of experimental study of interference induced magnetoconductivity in narrow quantum well HgTe with the normal energy spectrum are presented. Analysis is performed with taking into account the conductivity anisotropy. It is shown that the fitting parameter τ_ϕcorresponding to the phase relaxation time increases in magnitude with the increasing conductivity (σ) and decreasing temperature following the 1/T law. Such a behavior is analogous to that observed in usual two-dimensional systems with simple energy spectrum and corresponds to the inelasticity of electron-electron interaction as the main mechanism of the phase relaxation. However, it drastically differs from that observed in the wide HgTe quantum wells with the inverted spectrum, in which τ_ϕbeing obtained by the same way is practically independent of σ. It is presumed that a different structure of the electron multicomponent wave function for the inverted and normal quantum wells could be reason for such a discrepancy.
description: 7 pages, 8 figures
BOUNCER: Privacy-aware Query Processing Over Federations of RDF Datasets
Creators: name: Endris, Kemele M
name: Almhithawi, Zuhair
name: Lytra, Ioanna
name: Vidal, Maria-Esther
name: Auer, Sören
Publisher: name: Heidelberg : Springer
Year: 2018
Subjects: subject: Federated Engine
subject: Access-control
subject: Semantic Web
subject: Linked Data
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Data provides the basis for emerging scientific and interdisciplinary data-centric applications with the potential of improving the quality of life for the citizens. However, effective data-centric applications demand data management techniques able to process a large volume of data which may include sensitive data, e.g., financial transactions, medical procedures, or personal data. Managing sensitive data requires the enforcement of privacy and access control regulations, particularly, during the execution of queries against datasets that include sensitive and nonsensitive data. In this paper, we tackle the problem of enforcing privacy regulations during query processing, and propose BOUNCER, a privacy-aware query engine over federations of RDF datasets. BOUNCER allows for the description of RDF datasets in terms of RDF molecule templates, i.e., abstract descriptions of the properties of the entities in an RDF dataset and their privacy regulations. Furthermore, BOUNCER implements query decomposition and optimization techniques able to identify query plans over RDF datasets that not only contain the relevant entities to answer a query, but that are also regulated by policies that allow for accessing these relevant entities. We empirically evaluate the effectiveness of the BOUNCER privacy-aware techniques over state-of-the-art benchmarks of RDF datasets. The observed results suggest that BOUNCER can effectively enforce access control regulations at different granularity without impacting the performance of query processing.
An In-Depth View of the Mid-Infrared Properties of Point Sources and the Diffuse ISM in the SMC Giant HII Region, N66
Creators: name: Whelan, David G.
name: Lebouteiller, Vianney
name: Galliano, Frederic
name: Peeters, Els
name: Bernard-Salas, Jeronimo
name: Johnson, Kelsey E.
name: Indebetouw, Remy
name: Brandl, Bernhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (abridged)The focus of this work is to study mid-infrared point sources and the diffuse interstellar medium (ISM) in the low-metallicity (~0.2 solar) giant HII region N66 using the Spitzer Space Telescope's Infrared Spectrograph. We study 14 targeted infrared point sources as well as spectra of the diffuse ISM that is representative of both the photodissociation regions (PDRs) and the HII regions. Among the point source spectra, we spectroscopically confirm that the brightest mid-infrared point source is a massive embedded young stellar object, we detect silicates in emission associated with two young stellar clusters, and we observe spectral features of a known B[e] supergiant that are more commonly associated with Herbig Be stars. In the diffuse ISM, we provide additional evidence that the very small grain population is being photodestroyed in the hard radiation field. The 11.3 um PAH complex emission exhibits an unexplained centroid shift in both the point source and ISM spectra that should be investigated at higher signal-to-noise and resolution. Unlike studies of other regions, the 6.2 um and 7.7 um band fluxes are decoupled; the data points cover a large range of I7.7/I11.3 PAH ratio values within a narrow band of I6.2/I11.3 ratio values. Furthermore, there is a spread in PAH ionization, being more neutral in the dense PDR where the radiation field is relatively soft, but ionized in the diffuse ISM/PDR. By contrast, the PAH size distribution appears to be independent of local ionization state. Important to unresolved studies of extragalactic low-metallicity star-forming regions, we find that emission from the infrared-bright point sources accounts for only 20-35% of the PAH emission from the entire region. These results make a comparative dataset to other star-forming regions with similarly hard and strong radiation fields.
description: ApJ, in press. ~60 pages, 18 figures
Impact of high renewable penetration on wholesale electricity prices and grid reliability in the ERCOT energy-only market
Creators: name: Sears-Greer, Daniel
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Renewables
Grid
Reliability
Electricity prices

description: The ever-growing interest in climate change prevention continues to promote the growth of renewable sources of electricity in our country. Texas is on the forefront of that growth with the second highest penetration of renewable resources of any state in the U.S. It is therefore imperative to understand how this growth will impact a market that was not originally designed to handle significant renewable penetration. Because ERCOT is an energy-only market, where prices are largely based on the short run marginal cost of a generator, there is a risk that, as renewable penetration increases, and low marginal costs technology are more frequently setting the wholesale electricity price, generators may not earn enough revenue to incentivize investment in new capacity to maintain grid reliability. Using a multi-model analysis, I investigate the impact of increasing renewable penetration, and whether those renewables are dispatchable versus variable, on electricity prices, capacity mix, and grid reliability. I also look at how reserve requirements and price caps further impact these results. I found that, at renewable penetrations greater than 60%, we start to see an increase in the number hours with prices at or near $0/MWh. 6 Additionally, at this penetration level, we start to see peak prices, up to $50,000/MWh in the 100% renewable scenarios. I then implemented a series of price caps at $4,500; $9,000; and $20,000/MWh, and found that, while a price cap does suppress peak prices, it also results in dropped load due to prices not being high enough to compensate new capacity to serve that load. Access to dispatchable technologies helps mitigate these issues by providing a resource with higher short run marginal costs that can be turned up or down when needed. Based on these findings, Texas and the PUCT should consider new mechanisms to compensate assets for providing long term reliability services to help encourage market participants to play a larger role in the security of the Texas grid.
Quantum Otto heat engine based on a multiferroic chain working substance
Creators: name: Azimi, M.
name: Chotorlishvili, L.
name: Mishra, S.K.
name: Vekua, Teimuraz
name: Huebner, W.
name: Berakdar, J.
Publisher: name: Bristol : IOP Publishing Ltd.
Year: 2014
Subjects: subject: quantum heat engine
subject: quantum entanglement
subject: frustrated spin chain
subject: multiferroic system
subject: polarization
subject: colloquium
subject: physics
subject: oxides
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study a quantum Otto engine operating on the basis of a helical spin-1/2 multiferroic chain with strongly coupled magnetic and ferroelectric order parameters. The presence of a finite spin chirality in the working substance enables steering of the cycle by an external electric field that couples to the electric polarization. We observe a direct connection between the chirality, the entanglement and the efficiency of the engine. An electric-field dependent threshold temperature is identified, above which the pair correlations in the system, as quantified by the thermal entanglement, diminish. In contrast to the pair correlations, the collective many-body thermal entanglement is less sensitive to the electric field, and in the high temperature limit converges to a constant value. We also discuss the correlations between the threshold temperature of the pair entanglement, the spin chirality and the minimum of the fidelities in relation to the electric and magnetic fields. The efficiency of the quantum Otto cycle shows a saturation plateau with increasing electric field amplitude.
Excitation of a Si/SiGe quantum dot using an on-chip microwave antenna
Creators: name: Kawakami, E.
name: Scarlino, P.
name: Schreiber, L. R.
name: Prance, J. R.
name: Savage, D. E.
name: Lagally, M. G.
name: Eriksson, M. A.
name: Vandersypen, L. M. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report transport measurements on a Si/SiGe quantum dot subject to microwave excitation via an on-chip antenna. The response shows signatures of photon-assisted tunneling and only a small effect on charge stability. We also explore the use of a d.c. current applied to the antenna for generating tunable, local magnetic field gradients and put bounds on the achievable field gradients, limited by heating of the reservoirs.
Axisymmetric Bondi-Hoyle accretion onto a Schwarzschild Black Hole: shock cone vibrations
Creators: name: Lora-Clavijo, F. D.
name: Guzman, F. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study numerically the axisymmetric relativistic Bondi-Hoyle accretion of a supersonic ideal gas onto a fixed Schwarzschild background space-time described with horizon penetrating coordinates. We verify that a nearly stationary shock cone forms and that the properties of the shock cone are consistent with previous results in Newtonian gravity and former relativistic studies. The fact that the evolution of the gas is tracked on a spatial domain that contains a portion of the inner part of the black hole avoids the need to impose boundary conditions on a time-like boundary as done in the past. Thus, our approach contributes to the solution to the Bondi-Hoyle accretion problem at the length scale of the accretor in the sense that the gas is genuinely entering the black hole. As an astrophysical application, we study for a set of particular physical parameters, the spectrum of the shock cone vibrations and their potential association with QPO sources.
description: 12 pages, 34 eps figures, accepted for publication in MNRAS
Equisetum silvaticum Pal.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: B. silvaticum (Hudson) Pal. Cat. 400. l: Val du Trient (J.); Outre-Rhöne (Garns). - 2: Ob Fully und Saillon (Garns); ob St-Leonard (Besse); Lens (idem). - 3: Riddes (Besse); Törbel (Stebler); Eisten (Saastal) (Hirschmann). 3a: Gondo, mehrfach (Becherer). - 4: Twingen-Schatzturm im Binntal (Binz); Rappental (Wilczek). Denkschriften d. Schweiz. Naturf. Ges. Bd. LXXXI. A. Beeherer: Florae Vallesiacae Supplementum. 6 Var.dumosum (Vill.) Beck- 2: ObFully (Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Collision detection, isolation and identification for humanoids
Creators: name: Vorndamme, Jonathan
name: Schappler, Moritz
name: Haddadin, Sami
Publisher: name: Piscataway, NJ : Institute of Electrical and Electronics Engineers Inc.
Year: 2017
Subjects: subject: collision detection
subject: collision isolation
subject: collision identification
subject: humanoid robots
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: High-performance collision handling, which is divided into the five phases detection, isolation, estimation, classification and reaction, is a fundamental robot capability for safe and sensitive operation/interaction in unknown environments. For complex humanoid robots collision handling is obviously significantly more complex than for classical static manipulators. In particular, the robot stability during the collision reaction phase has to be carefully designed and relies on high fidelity contact information that is generated during the first three phases. In this paper, a unified realtime algorithm is presented for determining unknown contact forces and contact locations for humanoid robots based on proprioceptive sensing only, i.e. joint position, velocity and torque, as well as force/torque sensing along the structure. The proposed scheme is based on nonlinear model-based momentum observers that are able to recover the unknown contact forces and the respective locations. The dynamic loads acting on internal force/torque sensors are also corrected based on a novel nonlinear compensator. The theoretical capabilities of the presented methods are evaluated in simulation with the Atlas robot. In summary, we propose a full solution to the problem of collision detection, collision isolation and collision identification for the general class of humanoid robots.
title: Decomposing a Watershed's Nitrate Signal Using Spatial Sampling and Continuous Sensor Data
Creators: name: Clare, Evan
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Watershed features, physiographic setting, geology, climate, and hydrologic processes combine to produce a time-variant nutrient concentration signal at the watershed outlet. Anthropogenic influences, such as increased agricultural pressures and urbanization, have increased overall nutrient loadings delivered to the fluvial network. The impact of such increased nutrient loadings on Kentucky’s drinking water remains a potential threat to the region.
By coupling spatial sampling of nitrate concentrations in surface water with contemporary nutrient and water quality sensor technology, a decomposition of the Upper South Elkhorn watershed’s nitrate signal and an estimation of source timing and loading in the watershed was completed. The goal of the project was the decomposition of the integrated nitrate signal observed at the outlet of the Upper South Elkhorn watershed into contributing runoff and groundwater sources from agricultural/pasture and urban/suburban land-uses.
Decomposing the watershed’s nitrate signal yielded new knowledge learned about nitrate source, fate and transport in immature fluviokarst. This thesis discusses how mean, seasonal, and fluctuating nitrate behavior is related to soil processes, groundwater transfer, streambed removal, and event dynamics. It is expected that the decomposition of the nitrate signal will allow for the targeting of both the timing and sources for nutrient reductions in a watershed.
description: Copyright ©Evan Cole Clare 2019
description: Funding information: Robert A. and Maywin S. Lauderdale Fellowship
Probing atom-surface interactions by diffraction of Bose-Einstein condensates
Creators: name: Bender, Helmar
name: Stehle, Christian
name: Zimmermann, Claus
name: Slama, Sebastian
name: Fiedler, Johannes
name: Scheel, Stefan
name: Buhmann, Stefan Yoshi
name: Marachevsky, Valery N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In this article we analyze the Casimir-Polder interaction of atoms with a solid grating and an additional repulsive interaction between the atoms and the grating in the presence of an external laser source. The combined potential landscape above the solid body is probed locally by diffraction of Bose-Einstein condensates. Measured diffraction efficiencies reveal information about the shape of the Casimir-Polder interaction and allow us to discern between models based on a pairwise-summation (Hamaker) approach and Lifshitz theory.
description: 5 pages, 4 figures
MPEC 2023-M28 : 2023 MC
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 MC

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: On unit sum numbers of rational groups
Creators: name: Goldsmith, Brendan
name: Meehan, Christopher
name: Wallutis, S
Publisher: name: Technological University of Dublin
Year: 2002

description: The unit sum numbers of rational groups are investigated: the importance of the prime 2 being an automorphism of the rational group is discussed and other results are achieved by considering the number and distribution of rational primes which are, or are not, automorphisms of the group. Proof is given of the existence of rational groups with unit sum numbers greater than 2 but of finite value .
Optical Validation of Precast and Reinforced Concrete
Creators: name: Munderloh, Marco
name: Dedjouong, Armel
name: Suraja, K.P.
name: Bahlau, Sascha
name: Klemt-Albert, Katharina
name: Östermann, Jörn
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: Building Information Modeling
subject: Automatic Optical Validation
subject: Reinforcement Bar
subject: Precast Concrete
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Poster Presentation at the SVCP 2018
Avoiding dissipation in a system of three quantum harmonic oscillators
Creators: name: Manzano, Gonzalo
name: Galve, Fernando
name: Zambrini, Roberta
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the symmetries in an open quantum system composed by three coupled and detuned harmonic oscillators in the presence of a common heat bath. It is shown analytically how to engineer the couplings and frequencies of the system so as to have several degrees of freedom unaffected by decoherence, irrespective of the specific spectral density or initial state of the bath. This partial thermalization allows observing asymptotic entanglement at moderate temperatures, even in the nonresonant case. This latter feature cannot be seen in the simpler situation of only two oscillators, highlighting the richer structural variety of the three-body case. When departing from the strict conditions for partial thermalization, a hierarchical structure of dissipation rates for the normal modes is observed, leading to a long transient where quantum correlations such as the quantum discord are largely preserved, as well as to synchronous dynamics of the oscillators quadratures.
description: 14 pages, 8 figures
Pulsed electron source for atmospheric pressure chemical ionization in ion mobility spectrometry
Creators: name: Bunert, Erik
name: Heptner, Andre
name: Kirk, Ansgar T.
name: Käbein, Oliver
name: Zimmermann, Stefan
name: Kusch, Alexander
name: Wurz, Marc Christopher
Publisher: name: Piscataway, NJ : IEEE
Year: 2017
Subjects: subject: non-radioacitve electron source
subject: ion mobility spectrometry
subject: APCI
subject: pulsed electron emission
subject: thermionic emission
subject: field emission
subject: emission current control
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Ion mobility spectrometers (IMS) are measurement devices for fast and ultra-sensitive trace gas analysis. Most IMS employ radioactive electron sources, such as 3 H or 63 Ni, to provide free electrons with high kinetic energy at atmospheric pressure for initiating a chemical gas phase ionization of the analytes. The disadvantage of these radioactive materials are legal restrictions and the electron emission cannot be adjusted or turned off. Therefore, we developed a non-radioactive electron source and replaced the 3 H-source of our existing IMS, leading to comparable spectra. An advantage of our non-radioactive electron source is that it can operate in a fast pulsed mode. By optimizing the geometric parameters and developing fast control electronics, we can achieve short electron emission pulses with high intensities and adjustable pulse width down to a few nanoseconds. This allows to control the ionization process, which can enhance the analytical performance of the IMS. Furthermore, a miniaturized non-radioactive electron source is desirable, e.g. for hand-held IMS devices. Therefore, we developed an emission current control for field emitter cathodes and investigated their suitability for this application.
WEAKLY SUPERVISED CHARACTERIZATION OF DISCOURSES ON SOCIAL AND POLITICAL MOVEMENTS ON ONLINE MEDIA
Creators: name: Roy, Shamik
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Natural language processing

description: Nowadays an increasing number of people consume, share, and interact with information online. This results in posting and counter-posting on online media by different ideological groups on various polarized topics. Consequently, online media has become the primary platform for political and social influencers to directly interact with the citizens and share their perspectives, views, and stances with the goal of gaining support for their actions, bills, and legislation. Hence, understanding the perspectives and the influencing strategies in online media texts is important for an individual to avoid misinformation and improve trust between the general people and the influencers and the authoritative figures such as the government.
 Automatically understanding the perspectives in online media is difficult because of two major challenges. Firstly, the proper grammar or mechanism to characterize the perspectives is not available. Recent studies in Natural Language Processing (NLP) have leveraged resources from social science to explain perspectives. For example, Policy Framing and Moral Foundation Theory are used for understanding how issues are framed and the moral appeal expressed in texts to gain support. However, these theories often fail to capture the nuances in perspectives and cannot generalize over all topics and events. Our research in this dissertation is one of the first studies that adapt social science theories in Natural Language Processing for understanding perspectives to the extent that they can capture differences in ideologies or stances. The second key challenge in understanding perspectives in online media texts is that annotated data is difficult to obtain to build automatic methods to detect the perspectives, that can generalize over the large corpus of online media text on different topics. To tackle this problem, in this dissertation, we used weak sources of supervision such as social network interaction of users who produce and interact with the messages, weak human interaction, or artificial few-shot data using Large Language Models.
 Our insight is that various tasks such as perspectives, stances, sentiments toward entities, etc. are interdependent when characterizing online media messages. As a result, we proposed approaches that jointly model various interdependent problems such as perspectives, stances, sentiments toward entities, etc., and perform structured prediction to solve them jointly. Our research findings showed that the messaging choices and perspectives on online media in response to various real-life events and their prominence and contrast in different ideological camps can be efficiently captured using our developed methods.
DCAT RT plan improved with a combination of VMAT one in radiotherapy of the Lung
Creators: name: Palvolgyi, Jeno
Publisher: name: Zenodo
Year: 2023
Subjects: radiotherapy

description: Abstract: VMAT RT plans for 14 patients with lung cancer were prepared with the traditional 60Gy /2Gy fractionation. The feasibility of treating half of the treatment fractions with DCAT method, and correcting the heterogenity in DCAT plans with VMAT bias dose plans was investigated. The composite plans showed low heterogenity indices and the majority were performed with lower total MUs compared to the VMAT plan
Fast Image Scanning with Deep Max-Pooling Convolutional Neural Networks
Creators: name: Giusti, Alessandro
name: Cireşan, Dan C.
name: Masci, Jonathan
name: Gambardella, Luca M.
name: Schmidhuber, Jürgen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Deep Neural Networks now excel at image classification, detection and segmentation. When used to scan images by means of a sliding window, however, their high computational complexity can bring even the most powerful hardware to its knees. We show how dynamic programming can speedup the process by orders of magnitude, even when max-pooling layers are present.
description: 11 pages, 2 figures, 3 tables, 21 references, submitted to ICIP 2013
title: EDUKACJA I ZABAWA POPRZEZ KONTAKT ZE ZWIERZĘTAMI JAKO METODA KSZTAŁTOWANIA POSTAW ZRÓWNOWAŻONYCH WŚRÓD NAJMŁODSZYCH
Creators: name: Kleszcz, Justyna
Publisher: name: Politechnika Białostocka
Year: 2019

description: Keywords:  nature’s  deficiency;  poly  -  species  architecture;  animal  assisted  education;  natural  playscapes;  junk  play-grounds
Słowa kluczowe: deficyt natury; przestrzeń międzygatunkowa; edukacja wspomagana przez kontakt ze zwierzętami; naturalne place zabaw; przygodowe place zabaw
A CHIROPTERAN SURVEY OF THE LAC KINKONY-MAHAVAVY AREA IN WESTERN MADAGASCAR
Creators: name: Rakotoarivelo, Andrinajoro R
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Mammalia
Chiroptera
Chordata
Animalia
bats
bat

description: (Uploaded by Plazi for the Bat Literature Project) No abstract provided.
Optical orientation of electron spins in GaAs quantum wells
Creators: name: Pfalz, S.
name: Winkler, R.
name: Nowitzki, T.
name: Reuter, D.
name: Wieck, A.D.
name: Hägele, D.
name: Oestreich, Michael
Publisher: name: College Park, MD : American Physical Society
Year: 2005
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We present a detailed experimental and theoretical analysis of the optical orientation of electron spins in GaAs/AlAs quantum wells. Using time and polarization resolved photoluminescence excitation spectroscopy, the initial degree of electron-spin polarization is measured as a function of excitation energy for a sequence of quantum wells with well widths between 63 and 198 Å. The experimental results are compared with an accurate theory of excitonic absorption taking fully into account electron-hole Coulomb correlations and heavy-hole–light-hole coupling. We find in wide quantum wells that the measured initial degree of polarization of the luminescence follows closely the spin polarization of the optically excited electrons calculated as a function of energy. This implies that the orientation of the electron spins is essentially preserved when the electrons relax from the optically excited high-energy states to quasithermal equilibrium of their momenta. Due to initial spin relaxation, the measured polarization in narrow quantum wells is reduced by a constant factor that does not depend on the excitation energy. © 2005 The American Physical Society.
Helical edge resistance introduced by charge puddles
Creators: name: Väyrynen, Jukka I.
name: Goldstein, Moshe
name: Glazman, Leonid I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the influence of electron puddles created by doping of a 2D topological insulator on its helical edge conductance. A single puddle is modeled by a quantum dot tunnel-coupled to the helical edge. It may lead to significant inelastic backscattering within the edge because of the long electron dwelling time in the dot. We find the resulting correction to the perfect edge conductance. Generalizing to multiple puddles, we assess the dependence of the helical edge resistance on temperature and doping level, and compare it with recent experimental data.
description: 5 pages, 1 figure
title: W POSZUKIWANIU FORMY – ANTONI GAUDI I DOŚWIADCZALNE MODELOWANIE KONSTRUKCJI
Creators: name: Liżewska, Milena
Publisher: name: Politechnika Białostocka
Year: 2019

description: Keywords: prototype; form finding; truth of architecture; construction of architecture; Antoni Gaudi
Słowa kluczowe: prototyp; poszukiwanie formy; szczerość konstrukcji; architektura konstrukcji; Antoni Gaudi
Dynamical generation of the weak and Dark Matter scale
Creators: name: Hambye, Thomas
name: Strumia, Alessandro
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Assuming that naturalness should be modified by ignoring quadratic divergences, we propose a simple extension of the Standard Model where the weak scale is dynamically generated together with an automatically stable vector. Identifying it as thermal Dark Matter, the model has one free parameter. It predicts one extra scalar, detectable at colliders, which triggers a first-order dark/electroweak cosmological phase transition with production of gravitational waves. Vacuum stability holds up to the Planck scale.
description: 10 pages, 2 figures
title: TRADYCYJNE ZDOBNICTWO STARYCH DOMÓW OKOLIC WSI KANIUKI WE WSPOMNIENIACH LUDOWEGO RZEŹBIARZA WŁODZIMIERZA NAUMIUKA
Creators: name: Naumiuk-Jakuc, Anna
Publisher: name: Politechnika Białostocka
Year: 2019

description: Keywords: vernacular architecture; timber architecture; farmhouses; architectural ornamentation; Podlasie region; Białystok region
Słowa kluczowe: budownictwo ludowe; budownictwo drewniane; budownictwo wiejskie; drewniane zdobnictwo architektoniczne; Podlasie, Białostocczyzna
Cyperus fuscus L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C. fuscus L. Cat. 358. l: Vernayaz (Coquoz). -2: Buitonne obFully, etwa 900m, verschleppt (Garns 1915); zwischen dem BahnhofGranges-Lensund Noes, unter Ollon (Villaret). - 3: Bagnes (M:iUer). Var. virescens (Hoffm.) Vahl - l: Illarsaz (J.); Vionnaz (J.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Comparing alternatives
Creators: name: Li, Ang
Publisher: name: No Publisher Supplied
Year: 2023

description: I present a new analysis of the meaning of comparatives. While many semanticists who study gradation in natural language employ degrees to analyze comparatives, I contend that comparatives fundamentally involve the comparison of two structurally derived alternatives along a given measurement dimension, rather than an orderingrelation directly imposed on two degrees. The motivation for this new analysis comes from the context dependency of comparatives that lack an overt standard phrase/clause. While the traditional approach predicts that this dependency is no different from degree anaphora, I present evidence to suggest that these incomplete comparatives are actually sensitive to a broader linguistic context that the intended antecedent degree is contained in. The empirical pattern automatically follows if there is an additional requirement, namely that the antecedent degree is the measurement of the alternative we make the comparison to. This alternative-based meaning turns out to be the key to unlocking a unified account of incomplete comparatives that brings together a class of phenomena, which have led to wildly different comparative meanings in existing proposals. In addition to the infelicity condition in discourse anaphoric comparatives, the alternative-based meaning can also provide a compositional account of the recurrent ambiguities between comparison, additivity, and continuation across languages, as well as the so-called internal reading. For explicit comparative constructions, the alternative-based new analysis challenges a long-held assumption in the literature that the comparative marker takes the than-clause as its internal argument, similar to a transitive construction. In my theory, this transitive relation is replaced by an anaphoric binding between the comparative marker and the semantic objects introduced in the than-clause. By treating explicit comparatives as intrasentential anaphora, I demonstrate that the theory can handle all kinds of comparative constructions while offering new and superior solutions to some long-standing problems in comparative semantics. Throughout this dissertation, I aim to show that the new analysis provides better empirical coverage for each of phenomenon under discussion. More importantly, I make the case for a uniform approach: by conceptualizing comparatives as a comparison of alternatives, we gain insight into how seemingly disparate phenomena share a common core and how differences arise from the process of identifying the appropriate alternative for comparison.
Does the perception of fairness and standard of care in the health system depend on the field of study? Results of an empirical analysis
Creators: name: Damm, Kathrin
name: Prenzler, Anne
name: Zuchandke, Andy
Publisher: name: London : BioMed Central Ltd
Year: 2014
Subjects: subject: Fairness
subject: Standard of care
subject: Health care
subject: Perception
subject: Field of study
subject: Germany
subject: Study
subject: Gerechtigkeit
subject: Pflegestandard
subject: Gesundheitswesen
subject: Wahrnehmung
subject: Wissenschaftsdisziplin
subject: Forschungsbereich
subject: Forschungsgebiet
subject: Deutschland
subject: Studie
subject: Gerechtigkeit
subject: Krankenpflege
subject: Norm
subject: Gesundheitswesen
subject: Reform
subject: Wahrnehmung
subject: Disziplin
subject: Deutschland
subject: Befragung
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Background: The main challenge in the context of health care reforms and priority setting is the establishment and/or maintenance of fairness and standard of care. For the political process and interdisciplinary discussion, the subjective perception of the health care system might even be as important as potential objective criteria. Of special interest are the perceptions of academic disciplines, whose representatives act as decision makers in the health care sector. The aim of this study is to explore and compare the subjective perception of fairness and standard of care in the German health care system among students of medicine, law, economics, philosophy, and religion. Methods: Between October 2011 and January 2012, we asked freshmen and advanced students of the fields mentioned above to participate in a paper and pencil survey. Prior to this, we formulated hypotheses. The data were analysed by micro econometric regression techniques. Results: Data from 1,088 students were included in the study. Medical students, freshmen, and advanced students perceive the standard of care significantly as being better than non-medical students. Differences in the perception of fairness are not significant between the freshmen of the academic disciplines; however, they increase with the number of study terms. Besides the field of study, further variables such as gender and health status have a significant impact on perceptions. Conclusions: Our results show that there are differences in the perception of fairness and standard of care between academic disciplines, which might influence the interdisciplinary discussion on health care reforms and priority setting.