cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rhopalidae
Creators: name: Swanson, Daniel R.
name: Taylor, Steven J.
name: Heads, Sam W.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Rhopalidae

description: Key to the Rhopalidae of Illinois  1 Lateral pronotal margins distinctly notched behind anterior margin (Serinethinae); conspicuously colored, black and red; length 11 mm or more................................................................................ 2
- Lateral pronotal margins straight or slightly sinuate, without distinct notch behind anterior margin (Rhopalinae); generally inconspicuously colored; length usually a little more than 9 mm............................................... 3
 2 (1) Bucculae short, not extending beyond middle of head (Boisea); red dorsal markings present on pronotum and hemelytra............................................................................................ Boisea trivittata
 - Bucculae long, reaching base of head (Jadera); red dorsal markings limited to lateral margins of pronotum, hemelytra com- pletely black........................................................................ Jadera haematoloma
3 (1') Metafemur incrassate, bearing a series of prominent spines (Harmostini)........................................ 4
- Metafemur not incrassate, lacking prominent spines......................................................... 6
 4 (3) Connexiva widened, distinctly exposed laterally beyond margins of hemelytra................... Aufeius impressicollis
- Connexiva not widened, completely covered by hemelytra in dorsal view........................................ 5
 5 (4') Scape short, slender, barely reaching apex of tylus; costal margin of hemelytra with fuscous spots... Harmostes fraterculus
 - Scape long, thickened, surpassing apex of tylus; costal margin of hemelytra unicolorous, pale........ Harmostes reflexulus
 6 (3') Metatibia distinctly annulated with black; rostrum reaching, or often surpassing, third sternite....... Niesthrea louisianica
- Metatibia without black rings, although often speckled with fuscous spots; rostrum not surpassing third sternite......... 7
 7 (6') Apical margin of male genital capsule somewhat emarginated; female with ultimate tergite broadly triangular; coloration lighter, pale dull yellow to reddish......................................................... Arhyssus lateralis
 - Apical margin of male genital capsule more or less straight; female with ultimate tergite acutely triangular; coloration darker, dark gray-white to red-brown or fuscous-black............................................ Arhyssus nigristernum
description: Published as part of Swanson, Daniel R., Taylor, Steven J. & Heads, Sam W., 2017, Nine true bugs (Heteroptera) newly-discovered in Illinois, pp. 571-585 in Zootaxa 4269 (4) on page 582, DOI: 10.11646/zootaxa.4269.4.10, http://zenodo.org/record/582799
Probing the initial conditions of high-mass star formation. II. Fragmentation, stability, and chemistry
Creators: name: Pillai, T.
name: Kauffmann, J.
name: Wyrowski, F.
name: Hatchell, J.
name: Gibb, A. G.
name: Thompson, M. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new high-resolution study of pre-protocluster regions in tracers exclusively probing the coldest and dense gas (NH_2D). The data are used to constrain the chemical, thermal, kinematic, and physical conditions (i.e., densities) in G29.96e and G35.20w. NH_3, NH_2D, and continuum emission were mapped using the VLA, and PdBI. In particular, NH_2D is a unique tracer of cold, precluster gas at high densities, while NH_3 traces both the cold and warm gas of modest-to-high densities. In G29.96e, Spitzer images reveal two massive filaments, one of them in extinction (infrared dark cloud). We observe very low line widths in NH_3 (FWHM <1km/s). These multi-wavelength, high-resolution observations of high-mass pre-protocluster regions show that the target regions are characterized by (i) turbulent Jeans fragmentation of massive clumps into cores (from a Jeans analysis); (ii) cores and clumps that are "over-bound/subvirial", i.e. turbulence is too weak to support them against collapse, meaning that (iii) some models of monolithic cloud collapse are quantitatively inconsistent with data; (iv) accretion from the core onto a massive star, which can (for observed core sizes and velocities) be sustained by accretion of envelope material onto the core, suggesting that (similar to competitive accretion scenarios) the mass reservoir for star formation is not necessarily limited to the natal core; (v) high deuteration ratios ([NH_2D/NH_3]>6%), which make the above discoveries possible; (vi) and the destruction of NH_2D toward embedded stars. [abridged]
description: accepted to A&A; Table 5 is affected by non-trivial arXiv typesetting problems
Multiscale and upscaling methods for geophysical electromagnetic forward modeling
Creators: name: Caudillo Mata, Luz Angélica
Publisher: name: University of British Columbia
Year: 2017

description: Accurate and efficient simulation of electromagnetic responses in realistic geophysical settings is crucial to the exploration, imaging, and characterization of buried natural resources, such as mineral and hydrocarbon deposits. However, in practice, these simulations are computationally expensive. The geophysical settings consider highly heterogeneous media and features at multiple spatial scales that require a very large mesh to be accurately represented. This results in a system of equations to be solved that often exceeds the limits of average computers. Thus, the key is to reduce the problem size but retain the accuracy of the electromagnetic responses. Upscaling and multiscale techniques have been successfully applied to the problem of simulating fluid flow through heterogeneous porous media, where they are able to drastically reduce the size of the resulting fine-mesh system by casting it into a coarse-mesh system that is much cheaper to solve, while achieving a level of accuracy similar to that obtained with conventional discretization schemes. Recognizing the success that such techniques have had in fluid flow applications, this dissertation extends their use for application to electromagnetic modeling. In this dissertation, two new parallel simulation methods for the quasi-static Maxwell’s equations in the frequency domain are proposed: an upscaling framework for the electrical conductivity, and a multiscale finite volume with oversampling method. Both methods are combined with an adaptive mesh refinement technique (OcTree) to boost their computational performance. The performance of these methods is demonstrated by using field-inspired and synthetic examples that include a large electrical conductivity contrast. This investigation shows that both proposed methods are feasible to tackle geophysical electromagnetic problems, where being able to reduce the size of the problem can be particularly advantageous when extended domains are considered or when the mesh must capture the spatial distribution of the media heterogeneity outside the region where the electromagnetic responses are measured. Furthermore, both methods are new contributions to the literature in the field of computational methods in geophysical electromagnetics. Finally, both methods increase the current predictive and analytic capabilities by making the simulation of electromagnetic responses in larger and more complex geophysical settings more feasible than currently is possible.
Classical Topological Order in Kagome Ice
Creators: name: Macdonald, Andrew J.
name: Holdsworth, Peter C. W.
name: Melko, Roger G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We examine the onset of classical topological order in a nearest-neighbor kagome ice model. Using Monte Carlo simulations, we characterize the topological sectors of the groundstate using a non-local cut measure which circumscribes the toroidal geometry of the simulation cell. We demonstrate that simulations which employ global loop updates that are allowed to wind around the periodic boundaries cause the topological sector to fluctuate, while restricted local loop updates freeze the simulation into one topological sector. The freezing into one topological sector can also be observed in the susceptibility of the real magnetic spin vectors projected onto the kagome plane. The ability of the susceptibility to distinguish between fluctuating and non-fluctuating topological sectors should motivate its use as a local probe of topological order in a variety of related model and experimental systems.
description: 17 pages, 9 figures
Grasp Sensing for Human-Computer Interaction
Creators: name: Wimmer, Raphael
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: 004 Informatik
subject: 600 Technik

description: The way we grasp an object depends on several factors, e.g. the intended goal or the hand's anatomy. Therefore, a grasp can convey meaningful information about its context. Inferring these factors from a grasp allows us to enhance interaction with grasp-sensitive objects. This paper highlights an grasp as an important source of meaningful context for human-computer interaction and gives an overview of prior work from other disciplines. This paper offers a basis and framework for further research and discussion by proposing a descriptive model of meaning in grasps. The GRASP model combines five factors that determine how an object is grasped: goal, relationship between user and object, anatomy, setting, and properties of the object. The model is validated both from an epistemological perspective and by applying it to scenarios from related work.
Convergence Analysis of the Wolf Method for Coulombic Interactions
Creators: name: Angoshtari, Arzhang
name: Yavari, Arash
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A rigorous proof for convergence of the Wolf method for calculating electrostatic energy of a periodic lattice is presented. In particular, we show that for an arbitrary lattice of unit cells, the lattice sum obtained via Wolf method converges to the one obtained via Ewald method.
Photolysis of methylcobalamin. Nature of the reactive excited state
Creators: name: Kunkely, Horst
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 540 Chemie

description: Photolysis of methylcobalamin (Co(III)corrin(CH3)L + H2O + O2 â��> Co(III)(H2O)L + H2CO + OH-) shows a pronounced wave-length dependence. It is suggested that the reactive excited state is of the ligand-to-ligand charge transfer (LLCT) type and involves the promotion of an electron from the Co-C sigma-bond to a pi*(corrin) orbital. This LLCT transition mixes with the pipi*(corrin) transitions. Owing to this LLCT contribution, the pipi*-absorption bands are also photoactive but with reduced efficiency.
Universal rewriting via machine translation
Creators: name: Mallinson, Jonathan
Publisher: name: The University of Edinburgh
Year: 2021

description: Natural language allows for the same meaning (semantics) to be expressed in multiple different ways, i.e. paraphrasing. This thesis examines automatic approaches for paraphrasing, focusing on three paraphrasing subtasks: unconstrained paraphrasing where there are no constraints on the output, simplification, where the output must be simpler than the input, and text compression where the output must be shorter than the input. Whilst we can learn paraphrasing from supervised data, this data is sparse and expensive to create. This thesis is concerned with the use of transfer learning to improve paraphrasing when there is no supervised data. In particular, we address the following question: can transfer learning be used to overcome a lack of paraphrasing data? To answer this question we split it into three subquestions (1) No supervised data exists for a specific paraphrasing task; can bilingual data be used as a source of training data for paraphrasing? (2) Supervised paraphrasing data exists in one language but not in another; can bilingual data be used to transfer paraphrasing training data from one language to another? (3) Can the output of encoder-decoder paraphrasing models be controlled?
Sustainability rating systems for large infrastructure projects : good management practices for the inclusion of Envision in the Metro Vancouver Regional District
Creators: name: Tiffany, Kirk
Publisher: name: University of British Columbia
Year: 2017

description: Municipalities in the Metro Vancouver Regional District are beginning to adopt sustainable rating systems for large infrastructure projects. These systems act as process tools to assess sustainable practices throughout the planning and design of a project. The dominant rating system being applied for Metro Vancouver projects is Envision. Envision is a holistic framework of 5 categories and 60 sustainability credits that is based on the sustainable triple-bottom-line principle of economy, environment and society. Despite its growing recognition as a viable assessment tool for managing sustainability in Metro Vancouver, wide spread adoption of the system is slow because there is no guide on how to include rating systems in current management systems. The objective of this thesis is to conduct a comparative analysis of the lessons learned during the planning and design of two projects – one transportation project and one wastewater facility project – to highlight good management practices for the inclusion of Envision. The methods used to conduct the research study include a literature review of sustainability management in Canada and of Envision lesson-learned case studies and a series of interviews with various members of each project team. The results are presented in tables based on the Project Management Body of Knowledge and organized by the knowledge management areas to highlight the challenges, successes, impacts and good management practices for future inclusion of Envision for other projects. The results indicate the criticality of obtaining senior leadership approval; the importance of conducting a comparative decision analysis; the significance of having experienced Envision Certified Professionals; the need for determining appropriate benchmarking systems; and the need to account for potential schedule delays in project planning using Envision. The concluded results will provide good management practices for the inclusion of Envision to plan and design sustainable, large-scale infrastructure projects.
Astronomy with Radioactivities: Chapter 9, Nuclear Reactions
Creators: name: Wiescher, M.
name: Rauscher, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nuclear reaction rates determine the abundances of isotopes in stellar burning processes. A multitude of reactions determine the reaction flow pattern which is described in terms of reaction network simulations. The reaction rates are determined by laboratory experiments supplemented by nuclear reaction and structure theory. We will discuss the experimental approach as well as the theoretical tools for obtaining the stellar reaction rates. A detailed analysis of a reaction is only possible for a few selected cases which will be highlighted in this section. The bulk of nuclear reaction processes is however described in terms of a statistical model approach, which relies on global nuclear structure and reaction parameters such as level density and mass and barrier penetration, respectively. We will discuss a variety of experimental facilities and techniques used in the field, this includes low energy stable beam experiments, measurements at radioactive beam accelerators, and neutron beam facilities.
description: 28 pages, 2 figures; appeared in "Astronomy with Radioactivities", as Chapter 9, Eds. Roland Diehl, Dieter H. Hartmann, and Nikos Prantzos, Springer Lect. Notes in Physics, Vol. 812, 2010; differences to published version: corrected Eqs. 9.6, 9.8, 9.10; updated or replaced references; modified layout
First principles calculations on structure, bonding, and vibrational frequencies of SiPsub 2
Creators: name: Bachhuber, Frederik
name: Rothballer, J.
name: Pielnhofer, F.
name: Weihrich, Richard
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: ab initio calculations; bond lengths; density functional theory; gradient methods; HF calculations; molecular configurations; Raman spectra; silicon compounds; vibrational states
subject: 540 Chemie
subject: 31.15.ae
subject: 31.15.E-
subject: 33.20.Tp
subject: 31.15.xr
subject: 33.15.Dj
subject: 33.20.Fb

description: Pyrite type SiP2 is reinvestigated by first principles calculations on various levels of functionals including local density approximation, generalized gradient approximation, Becke-Lee-Yang-Parr hybrid functional, and the Hartree-Fock method. SiP2 is seen as a model compound with molecular [P–P] entities and [SiP6] octahedra. Structure and bonding are addressed by electronic structure calculations. Special attention is spent on P–P and Si–P bonds in terms of bond lengths and respective stretching modes from simulated Raman spectra. The electronic structure is analyzed in both direct and momentum space by the electron localization function and site projected density of states. The main goals of this work are to understand the nature of chemical bonding in SiP2 and to compare and contrast the different methods of calculation.
The Resolved Stellar Halo of NGC 253
Creators: name: Bailin, Jeremy
name: Bell, Eric F.
name: Chappell, Samantha N.
name: Radburn-Smith, David J.
name: de Jong, Roelof S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have obtained Magellan/IMACS and HST/ACS imaging data that resolve red giant branch stars in the stellar halo of the starburst galaxy NGC 253. The HST data cover a small area, and allow us to accurately interpret the ground-based data, which cover 30% of the halo to a distance of 30 kpc, allowing us to make detailed quantitative measurements of the global properties and structure of a stellar halo outside of the Local Group. The geometry of the halo is significantly flattened in the same sense as the disk, with a projected axis ratio of b/a ~ 0.35 +/- 0.1. The total stellar mass of the halo is estimated to be M_halo ~ 2.5 +/- 1.5 x 10^9 M_sun, or 6% of the total stellar mass of the galaxy, and has a projected radial dependence that follows a power law of index -2.8 +/- 0.6, corresponding to a three-dimensional power law index of ~ -4. The total luminosity and profile shape that we measure for NGC 253 are somewhat larger and steeper than the equivalent values for the Milky Way and M31, but are well within the scatter of model predictions for the properties of stellar halos built up in a cosmological context. Structure within the halo is seen at a variety of scales: there is small kpc-scale density variation and a large shelf-like feature near the middle of the field. The techniques that have been developed will be essential for quantitatively comparing our upcoming larger sample of observed stellar halos to models of halo formation.
description: ApJ, in press. Version with full resolution figures available at http://www.astro.lsa.umich.edu/~jbailin/papers/bailin_n253halo.pdf
Bestimmung der Betriebsgrenzen für das Schnellladen von Lithium-Ionen Batterien
Creators: name: Dippon, Michael
Publisher: name: KIT Scientific Publishing
Year: 2022
Subjects: Lithium-Ionen Batterie
Lithium-Plating
Schnellladen
Lithium-Ion Battery
Fastcharging

description: In dieser Arbeit wird das Verhalten einer kommerziellen Pouchzelle sowohl elektrisch als auch post mortem bei Lithium-Plating untersucht. Zur Bestimmung der Betriebsgrenzen für das Schnellladen wird für die untersuchte Zelle ein elektrisches Ersatzschaltbildmodell entworfen, basierend darauf ein optimales Ladeprofil abgeleitet und validiert. Der Einfluss einer mechanischen Kraft auf die ermittelten Betriebsgrenzen wird anschließend über einen dafür entwickelten Messaufbau untersucht.
The random Blume-Capel model on cubic lattice: first order inverse freezing in a 3D spin-glass system
Creators: name: Leuzzi, L.
name: Paoluzzi, M.
name: Crisanti, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present a numerical study of the Blume-Capel model with quenched disorder in 3D. The phase diagram is characterized by spin-glass/paramagnet phase transitions of both first and second order in the thermodynamic sense. Numerical simulations are performed using the Exchange-Monte Carlo algorithm, providing clear evidence for inverse freezing. The main features at criticality and in the phase coexistence region are investigated. The whole inverse freezing transition appears to be first order. The second order transition appears to be in the same universality class of the Edwards-Anderson model. The nature of the spin-glass phase is analyzed by means of the finite size scaling behavior of the overlap distribution functions and the four-spins real-space correlation functions. Evidence for a replica symmetry breaking-like organization of states is provided.
description: 18 pages, 24 figures, 7 tables
Inozemtsev's hyperbolic spin model and its related spin chain
Creators: name: Barba, J. C.
name: Finkel, F.
name: Gonzalez-Lopez, A.
name: Rodriguez, M. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we study Inozemtsev's su(m) quantum spin model with hyperbolic interactions and the associated spin chain of Haldane-Shastry type introduced by Frahm and Inozemtsev. We compute the spectrum of Inozemtsev's model, and use this result and the freezing trick to derive a simple analytic expression for the partition function of the Frahm-Inozemtsev chain. We show that the energy levels of the latter chain can be written in terms of the usual motifs for the Haldane-Shastry chain, although with a different dispersion relation. The formula for the partition function is used to analyze the behavior of the level density and the distribution of spacings between consecutive unfolded levels. We discuss the relevance of our results in connection with two well-known conjectures in quantum chaos.
description: 22 pages, RevTeX, 7 figures
The Temperature Dependence of the Properties of Electrolyte Solutions. III. Conductance of Various Salts at High Concentrations in Propylene Carbonate at Temperatures from − 45°C to + 25°C
Creators: name: Barthel, Josef
name: Gores, H.-J.
name: Schmeer, Georg
Publisher: name: Universität Regensburg
Year: 1979
Subjects: subject: Elektrochemie; Lösungen; Transporterscheinungen
subject: 540 Chemie

description: Specific conductances of Et4NPF6, Pr4NPF6, Bu4NPF6, LiPF6, KPF6, LiClO4, and KSCN in propylene carbonate were studied at high concentrations in the temperature range from +25°C to -45°C. Data are fitted by a least-squares method to a four-parametric empirical equation, yielding the maximum specific conductance κmax and the corresponding concentration μ. Within the frame-work of a hydro-dynamic model the Stokes-radii of the ions and the solvent viscosity are found to be the most important conductance-determining parameters, affecting both κmax and μ Ionic association in solutions with propylene carbonate as the solvent is not of significant importance. Kinetic treatment of conductance yields temperature-dependent activation energies, but at any one temperature equal for all salts at concentration μ. Die spezifische Leitfähigkeit konzentrierter Lösungen von Et4NPF6, Pr4NPF6, Bu4NPF6, LiPF6, KPF6, LiClO4 und KSCN in Propylencarbonat wurde im Temperaturbereich zwischen +25°C und -45°C untersucht. Die Datenanalyse mittels eines Ausgleichs nach einer vier-parametrigen empirischen Gleichung liefert für jede Temperatur die maximale spezifische Leitfähigkeit kmax mit zugehörigem Konzentrationswert μ. Die Stokes-Radien der Ionen und die Viskosität des Lösungsimittels erweisen sich für ein hydrodynamisches Modell als die wichtigsten leitfähigkeitsbestimmenden Parameter zur Diskussion von κmax und μ. Ionenassoziation spielt in Propylencarbonat als Lösungsmittel keine hervorragende Rolle. Die Behandlung des Transportprozesses im Rahmen eines kinetischen Modells führt zu temperaturabhängigen Aktivierungsenergien, die aber bei jeder Temperatur für alle Salze bei der Konzentration μ gleich sind.
Low Velocity Granular Drag in Reduced Gravity
Creators: name: Costantino, D. J.
name: Bartell, J.
name: Scheidler, K.
name: Schiffer, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We probe the dependence of the low velocity drag force in granular materials on the effective gravitational acceleration (geff) through studies of spherical granular materials saturated within fluids of varying density. We vary geff by a factor of 20, and we find that the granular drag is proportional to geff, i.e., that the granular drag follows the expected relation Fprobe = η ρgrain geff dprobe hprobe^2 for the drag force, Fprobe on a vertical cylinder with depth of insertion, hprobe, diameter dprobe, moving through grains of density ρgrain, and where η is a dimensionless constant. This dimensionless constant shows no systematic variation over four orders of magnitude in effective grain weight, demonstrating that the relation holds over that entire range to within the precision of our data.
The influence of hydrophobic solvation on the alkaline hydrolysis of ethyl esters of polar substituted 2-methylpropionic acids in water
Creators: name: Schmeer, Georg
name: Riembauer, S.
name: Barthel, Josef
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 540 Chemie

description: The rate constants of the alkaline hydrolysis of 2-methylpropionic acid ethyl ester, alpha-hydroxy, alpha-bromo, alpha-cyano, and alpha-nitro-2-methylpropionic acid ethyl ester have been measured in water between 5-degrees-C and 45-degrees-C with the help of an appropriate conductance bridge developed in our laboratory. The influence of the polar substituents on the rate constant, a powerful probe for discussing two-particle interactions in solutions, is characterized by an intramolecular structure parameter of the activated complex and a dielectric parameter of its surroundings. The dependence of the reaction rate of the structure parameter is compared to that of substituted acetic acid derivatives. The smaller dielectric parameter of 2-methylpropionic acid esters reveals the increasing hydrophobic solvation in comparison to acetic acid derivates.
The Formation and Evolution of Virgo Cluster Galaxies - I. Broadband Optical & Infrared Colours
Creators: name: Roediger, Joel C.
name: Courteau, Stephane
name: McDonald, Michael
name: MacArthur, Lauren A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use a combination of deep optical (gri) and near-infrared (H) photometry to study the radially-resolved colours of a broad sample of 300 Virgo cluster galaxies. For most galaxy types, we find that the median g-H colour gradient is either flat (gas-poor giants and gas-rich dwarfs) or negative (i.e., colours become bluer with increasing radius; gas-poor dwarfs, spirals, and gas-poor peculiars). Later-type galaxies typically exhibit more negative gradients than early-types. Given the lack of a correlation between the central colours and axis ratios of Virgo spiral galaxies, we argue that dust likely plays a small role, if at all, in setting those colour gradients. We search for possible correlations between galaxy colour and photometric structure or environment and find that the Virgo galaxy colours become redder with increasing concentration, luminosity and surface brightness, while no dependence with cluster-centric radius or local galaxy density is detected (over a range of ~2 Mpc and ~3-16 Mpc^-2, respectively). However, the colours of gas-rich Virgo galaxies do correlate with neutral gas deficiency, such that these galaxies become redder with higher deficiencies. Comparisons with stellar population models suggest that these colour gradients arise principally from variations in stellar metallicity within these galaxies, while age variations only make a significant contribution to the colour gradients of Virgo irregulars. A detailed stellar population analysis based on this material is presented in Roediger et al (2011b; arXiv:1011.3511).
description: 34 pages, 12 figures, 1 table, submitted to MNRAS; Paper II (arXiv:1011.3511) has also been updated
An Improved Spectroscopic Analysis of DA White Dwarfs from the Sloan Digital Sky Survey Data Release 4
Creators: name: Tremblay, P. -E.
name: Bergeron, P.
name: Gianninas, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an improved spectroscopic and photometric analysis of hydrogen-line DA white dwarfs from the Sloan Digital Sky Survey Data Release 4 based on model atmospheres that include improved Stark broadening profiles with non-ideal gas effects. We also perform a careful visual inspection of all spectroscopic fits with high signal-to-noise ratios (S/N > 12) and present improved atmospheric parameters (Teff and log g) for each white dwarf. Through a comparison of spectroscopic and photometric temperatures, we report the discovery of 35 DA+DB/DC double degenerate candidates and 2 helium-rich DA stars. We also determine that a cutoff at S/N = 15 optimizes the size and quality of the sample for computing the mean mass of DA white dwarfs, for which we report a value of 0.613 Msun. In the following step, we compare our results to previous analyses of the SDSS DR4 and find a good agreement if we account for the shift produced by the improved Stark profiles. Finally, the properties of DA white dwarfs in the SDSS are weighed against those of the Villanova White Dwarf Catalog sample of Gianninas et al. We find systematically lower masses (by about 3% on average), a difference that we trace back to the data reduction procedure of the SDSS. We conclude that a better understanding of these differences will be important to determine the absolute temperature scale and mean mass of DA white dwarfs.
description: 61 pages, 21 figures, accepted for publication in the Astrophysical Journal
Media Cooperation of Turkic Speaking States
Creators: name: Arestakes; Simavoryan
Publisher: name: Zenodo
Year: 2019
Subjects: Turkey
Media
Turkish-speaking countries
"Anadolu" Agency
Media Platform of Turkic-speaking Communities
Turkish Media Training Program
Turkic World's Journalists
Turkic World
Turkic Council"

description: The article refers to Turkey's cooperation with Turkish-speaking countries in the media sphere.
description: {"references": ["Simavoryan, A. (2018). \u0539\u0578\u0582\u0580\u0584\u056b\u0561\u0576 \u0587 \u0569\u0575\u0578\u0582\u0580\u0584\u0561\u056c\u0565\u0566\u0578\u0582 \u0565\u0580\u056f\u0580\u0576\u0565\u0580\u056b \u057d\u0583\u0575\u0578\u0582\u057c\u0584\u0565\u0580\u056b \u0570\u0561\u0574\u0561\u0563\u0578\u0580\u056e\u0561\u056f\u0581\u0578\u0582\u0569\u0575\u0578\u0582\u0576\u0568. GLOBUS ANALYTICAL BULLETIN, 92(3), 10-17. DOI:10.5281/zenodo.5559004"]}
Large-x PDFs and the Drell-Yan Process
Creators: name: Peng, J. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dimuon production has been studied in a series of fixed-target experiments at Fermilab during the last two decades. Highlights from these experiments, together with recent results from the Fermilab E866 experiment, are presented. Future prospects for studying the parton distributions in the nucleons and nuclei using dimuon production are also discussed.
description: 9 pages, 3 figurs, to appear in the Proceedings of the HiX2010 Workshop
Spin-chirality decoupling and critical properties of a two-dimensional fully frustrated XY model
Creators: name: Okumura, Soichirou
name: Yoshino, Hajime
name: Kawamura, Hikaru
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the ordering of the spin and the chirality in the fully frustrated XY model on a square lattice by extensive Monte Carlo simulations. Our results indicate unambiguously that the spin and the chirality exhibit separate phase transitions at two distinct temperatures, i. e. , the occurrence of the spin-chirality decoupling. The chirality exhibits a long-range order at T_c=0.45324(1) via a second-order phase transition, where the spin remains disordered with a finite correlation length ξ_s(T_c) \sim 120. The critical properties of the chiral transition determined from a finite-size scaling analysis for large enough systems of linear size L > ξ_s(T_c) are well compatible with the Ising universality. On the other hand, the spin exhibits a phase transition at a lower temperature T_s=0.4418(5) into the quasi-long-range-ordered phase. We found η(T_s)=0.201(1), suggesting that the universality of the spin transition is different from that of the conventional Kosterlitz-Thouless (KT) transition.
description: 11pages, 16 figures
Lasting impact : the compassion of strangers
Creators: name: Selman, Jennifer M.
Publisher: name: University of British Columbia
Year: 2017

description: The purpose of this study was to explore and understand the lasting impact of compassion from strangers. Eight participants graciously shared their experience of a period of suffering, the unexpected compassion they received from a stranger, and the lasting impact it had on them. Six people participated in a single interview with the researcher and two participants chose to write letters to describe their experience. Each interview was transcribed. An arts-based methodology was used. I approached the study as an a/r/tographer, utilizing poetic inquiry, photography, contemplative spaces and life-writing as ways to explore, describe, and understand the multi-faceted experiences of the participants. The compassion of strangers was unexpected and had a lasting impact on the participants. It broadened their perspectives about strangers, helped build feelings of gratitude, and positively altered their sense of self. Inherent in the eight experiences were threads of suffering, compassion, unexpectedness, interconnectedness, gratitude, and self.
Absorption and emission spectra of a single-crystal (maleonitriledithiolato)palladate(II) complex
Creators: name: Güntner, W.
name: Gliemann, G.
name: Kunkely, Horst
name: Reber, C.
name: Zink, J. I.
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 540 Chemie

description: The polarized optical absorption and emission of single crystals of [(C2H5)4N]2[Pd(mnt)2] (mnt = [S2C2(CN)2]2-) at temperatures 3 K less-than-or-equal-to T less-than-or-equal-to 295 K are reported. The lowest excited states are due to 1,3B3g and 1,3B2u terms with metal-to-ligand charge-transfer and ligand-centered character, respectively. Vibronic structure is observed on the lowest energy absorption band and on the emission band. The energy spacings and the intensities of the vibronic bands are analyzed.
Revisiting the double-binary-pulsar probe of non-dynamical Chern-Simons gravity
Creators: name: Ali-Haïmoud, Yacine
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One of the popular modifications to the theory of general relativity is non-dynamical Chern-Simons (CS) gravity, in which the metric is coupled to an externally prescribed scalar field. Setting accurate constraints to the parameters of the theory is important owing to their implications for the scalar field and/or the underlying fundamental theory. The current best constraints rely on measurements of the periastron precession rate in the double-binary-pulsar system and place a very tight bound on the characteristic CS lengthscale k_cs^{-1}
description: 12 pages, 4 figures, to be submitted to PRD. Comments are welcome
Conductance of electrolytes in 1-propanol solutions from −40 to 25°C
Creators: name: Barthel, Josef
name: Wachter, R.
name: Schmeer, Georg
name: Hilbinger, H.
Publisher: name: Universität Regensburg
Year: 1986
Subjects: subject: Electrolyte conductance - single ion conductance - ion-pair formation - non-coulombic interactions - 1-propanol solutions - alkali metal salts - tetraalkylammonium salts
subject: 540 Chemie

description: Conductance data for solutions of LiCl, NaBr, NaI, KI, KSCN, RbI, Et4NI, Pr4NI, Bu4NI, Bu4NClO4, n-Am4NI, i-Am4NI, n-Hept4NI, Me2Bu2NI, MeBu3NI, EtBu3NI, i-Am3BuNI, and i-Am3BuNBPh4 in 1-propanol at –40, –30, –20, –10, 0, 10, and 25°C are communicated and discussed. Evaluation of the data is performed on the basis of a conductance equation that includes a term in c3/2. Single ion conductances at 25 and 10°C are determined with the help of transference numbers t o + (KSCN/PrOH); the data are compared to data estimated by other methods. Ion-pair association constants and their temperature dependence are discussed in terms of contact and solvent separated ion pairs, and the role of non-coulombic forces is shown with the help of an appropriate splitting of the Gibbs energy of ion-pair formation.
Differential rotation measurement of soft X-Ray corona
Creators: name: Chandra, Satish
name: Vats, Hari Om
name: Iyer, K. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The aim of this paper is to study the latitudinal variation in the solar rotation in soft X-ray corona. The time series bins are formed on different latitude regions of the solar full disk (SFD) images that extend from 80 degree South to 80 degree North. These SFD images are obtained with the soft X-ray telescope (SXT) on board the Yohkoh solar observatory. The autocorrelation analyses are performed with the time series that track the SXR flux modulations in the solar corona. Then for each year, extending from 1992 to 2001, we obtain the coronal sidereal rotation rate as a function of the latitude. The present analysis from SXR radiation reveals that; (i) the equatorial rotation rate of the corona is comparable to the rotation rate of the photosphere and the chromosphere, (ii) the differential profile with respect to the latitude varies throughout the period of the study; it is more in the year 1999 and least in 1994 and (iii) the equatorial rotation period varies systematically with sunspot numbers and indicates its dependence on the phases of the solar activity cycle.
description: 9 Pages, 4 Figures, Accepted for Publication in MNRAS
The behavioural and neural science of motor skill learning in healthy individuals and people with stroke
Creators: name: Wadden, Katie P.
Publisher: name: University of British Columbia
Year: 2017

description: Background: Due to a high occurrence of motor impairment following stroke, motor learning is fundamentally important for stroke rehabilitation. Motor learning interventions can be difficult to deliver by clinicians and researchers due to individual differences in motor abilities that are compounded by neural changes associated with an ischemic insult. To enhance motor learning, interventions must be grounded in understanding patterns of performance change, both behaviourally and neurologically. Methods: In Chapters 2 and 3, performance data were fitted to exponential curves to measure performance change during skill acquisition. In Chapter 2, curve parameters were used to create an individualized learner-adapted algorithm to manipulate the level of difficulty of motor practice conditions. In Chapter 3, curve parameters were used to measure the rate of skill acquisition in healthy individuals and stroke populations. Chapter 4 explored the functional connectivity of motor-related brain networks before and after skill acquisition in healthy individuals and individuals with stroke. In Chapter 5, residual white matter in a motor-related brain network was used to examine individual responses following an intervention combining non-invasive brain stimulation and motor skill practice in individuals with stroke. Findings: In Chapter 2, skill acquisition under a learner-adapted algorithm, developed from curve parameters, showed that higher individualized levels of difficulty in practice were better for skill retention. In Chapter 3, individuals with stroke showed a slower rate of skill acquisition compared to healthy individuals, which was associated with worse motor performance-related change at a delayed retention test. In Chapter 4, individuals with stroke did not activate motor learning–related functional brain networks in the same manner as healthy individuals following motor skill practice. In Chapter 5, the integrity of white matter in the motor-related brain network was higher in individuals who positively responded to the intervention. Conclusions: The findings from this dissertation highlight the importance of modelling performance data to advance the evaluation of stroke rehabilitative interventions. This dissertation contributes new knowledge of a gray matter motor network associated with motor learning, and a white matter motor network biomarker that characterizes the response to non-invasive brain stimulation paired with motor practice in individuals with stroke.
Primary and secondary eclipse spectroscopy with JWST: exploring the exoplanet parameter space
Creators: name: Belu, A. R.
name: Selsis, F.
name: Morales, J-C.
name: Ribas, I.
name: Cossou, C.
name: Rauer, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Eclipse exoplanet spectroscopy has yielded detection of H_2O, CH_4, CO_2 and CO in the atmosphere of hot jupiters and neptunes. About 40 large terrestrial planets are announced or confirmed, two of which are transiting, and another deemed habitable. Hence the potential for eclipse spectroscopy of terrestrial planets with James Webb Space Telescope (JWST) has become an active field of study. We explore the parameter space (type of stars, planet orbital periods and types, and instruments/wavelengths) in terms of the signal-to-noise ratio (S/N) achievable on the detection of spectroscopic features. We use analytic formula and model data for both the astrophysical scene and the instrument, to plot S/N contour maps, while indicating how the S/N scales with the fixed parameters. We systematically compare stellar photon noise-only figures with ones including detailed instrumental and zodiacal noises. Likelihood of occurring targets is based both on model and catalog star population of the solar neighborhood. The 9.6 micron ozone band is detectable (S/N = 3) with JWST, for a warm super-earth 6.7 pc away, using ~2% of the 5-year nominal mission time (summing observations, M4V and lighter host star for primary eclipses, M5V for secondary). If every star up to this mass limit and distance were to host a habitable planet, there should be statistically ~1 eclipsing case. Investigation of systematic noises in the co-addition of 5 years worth-, tens of days separated-, hours-long observations is critical, complemented by dedicated characterisation of the instruments, currently in integration phase. The census of nearby transiting habitable planets must be complete before the beginning of science operations.
description: Accepted for publication in A&A, 16 pages, 19 figures
The magnetic field in the NGC 2024 FIR 5 dense core
Creators: name: Alves, Felipe de O.
name: Girart, Josep M.
name: Lai, Shih-Ping
name: Rao, Ramprasad
name: Zhang, Qizhou
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We used the Submillimeter Array (SMA) to observe the thermal polarized dust emission from the protostellar source NGC 2024 FIR 5. The polarized emission outlines a partial hourglass morphology for the plane-of-sky component of the core magnetic field. Our data are consistent with previous BIMA maps, and the overall magnetic field geometries obtained with both instruments are similar. We resolve the main core into two components, FIR 5A and FIR 5B. A possible explanation for the asymmetrical field lies in depolarization effects due to the lack of internal heating from FIR 5B source, which may be in a prestellar evolutionary state. The field strength was estimated to be 2.2 mG, in agreement with previous BIMA data. We discuss the influence of a nearby H{\sc ii} region over the field lines at scales of $\sim 0.01$ pc. Although the hot component is probably compressing the molecular gas where the dust core is embedded, it is unlikely that the radiation pressure exceeds the magnetic tension. Finally, a complex outflow morphology is observed in CO (3 $\rightarrow$ 2) maps. Unlike previous maps, several features associated with dust condensations other than FIR 5 are detected.
description: 48 pages, 12 figures, accepted for publication in The Astrophysical Journal
Ion-beam mixing in crystalline and amorphous germanium isotope multilayers
Creators: name: Bracht, H.
name: Radek, M.
name: Kube, R.
name: Knebel, S.
name: Posselt, M.
name: Schmidt, B.
name: Haller, E. E.
name: Bougeard, Dominique
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: amorphous semiconductors; diffusion; elemental semiconductors; gallium; germanium; ion beam mixing; ion implantation; isotopes; mixing; molecular beam epitaxial growth; multilayers; secondary ion mass spectra; semiconductor doping; semiconductor epitaxial layers; silicon
subject: 530 Physik
subject: 61.72.uf
subject: 66.30.J-
subject: 61.80.Jh
subject: 81.05.Cy
subject: 81.05.Gc
subject: 82.80.Ms

description: Gallium (Ga) implantation induced self-atom mixing in crystalline and amorphous germanium (Ge) is investigated utilizing isotopically controlled Ge multilayer structures grown by molecular beam epitaxy. The distribution of the Ga ions and the ion-beam induced depth-dependent mixing of the isotope structure was determined by means of secondary ion mass spectrometry. Whereas the distribution of Ga in the crystalline and amorphous Ge is very similar and accurately reproduced by computer simulations based on binary collision approximation (BCA), the ion-beam induced self-atom mixing is found to depend strongly on the state of the Ge structure. The experiments reveal stronger self-atom mixing in crystalline than in amorphous Ge. Atomistic simulations based on BCA reproduce the experimental results only when unphysically low Ge displacement energies are assumed. Analysis of the self-atom mixing induced by silicon implantation confirms the low displacement energy deduced within the BCA approach. This demonstrates that thermal spike mixing contributes significantly to the overall mixing of the Ge isotope structures. The disparity observed in the ion-beam mixing efficiency of crystalline and amorphous Ge indicates different dominant mixing mechanisms. We propose that self-atom mixing in crystalline Ge is mainly controlled by radiation enhanced diffusion during the early stage of mixing before the crystalline structure turns amorphous, whereas in an already amorphous state self-atom mixing is mediated by cooperative diffusion events.