cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: How processing of visual symmetry relates to preference for regular patterns, and the role of attention on preference formation
Creators: name: Rampone, Giulia
Publisher: name: University of Liverpool Repository
Year: 2016

description: The process of preference formation is influenced by many factors. These include intrinsic stimulus attributes as well as contextual factors, which are not directly related with the stimulus itself. In this PhD thesis I present seven studies that give significant new insights about how human preference is affected by intrinsic stimulus properties, as well as contextual factors. The common denominator is the use of abstract shapes forming regular patterns (reflectional symmetry). The presence of symmetry within the stimuli predicts preference, and there is behavioural evidence of an association between symmetry and positive valence. The first study shows the neural basis of this association (Part 1, Chapter 2). The thesis proceeds with four studies (Part 2, Chapters 3 – 6) exploring the role of (exogenous) attention on preference evaluation of abstract shapes that already contain intrinsic valence (symmetry/random). Previous research has demonstrated that attention plays a major role on preference formation. These studies showed that exogenous orienting of attention led to more positive evaluation of stimuli at cued locations, although this effect was sensitive to endogenous control. In the last part (Part 3), Chapter 7 explored preference devaluation of abstract symmetry with increasing visual eccentricity, as a potential consequence of reduced perceived regularity at farther locations. Random shapes, which do not lend themselves to coherent interpretation at fovea, were similarly evaluated at all eccentricities. Chapter 8 did not focus on preference. With a novel design, it explored how symmetry detection speed in the periphery was affected by the way attention was deployed in visual space. Overall these findings confirm the role of symmetry in aesthetic appreciation of abstract shapes. Importantly, they highlight a role of attention orienting and gazing in preference modulation. Defining what factors determine preference is key to understanding human behaviour and decisions. This thesis provides a significant contribution towards this goal.
Computational Analysis of Factors Influencing Enhancement of Thermal Conductivity of Nanofluids
Creators: name: Okeke, George
name: Witharana, Sanjeeva
name: Antony, Joseph
name: Ding, Yulong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Numerical investigations are conducted to study the effect of factors such as particle clustering and interfacial layer thickness on thermal conductivity of nanofluids. Based on this, parameters including Kapitza radius, and fractal and chemical dimension which have received little attention by previous research are rigorously investigated. The degree of thermal enhancement is analysed for increasing aggregate size, particle concentration, interfacial thermal resistance, and fractal and chemical dimensions. This analysis is conducted for water-based nanofluids of Alumina (Al2O3), CuO and Titania (TiO2) nanoparticles where the particle concentrations are varied up to 4vol%. Results from the numerical work are validated using available experimental data. For the case of aggregate size, particle concentration and interfacial thermal resistance; the aspect ratio (ratio of radius of gyration of aggregate to radius of primary particle, Rg/a) is varied between 2 to 60. It was found that the enhancement decreases with interfacial layer thickness. Also the rate of decrease is more significant after a given aggregate size. For a given interfacial resistance, the enhancement is mostly sensitive to Rg/a <20 indicated by the steep gradients of data plots. Predicted and experimental data for thermal conductivity enhancement are in good agreement.
Towards Measuring The Ground State Hyperfine Splitting Of Antihydrogen - A Progress Report
Creators: name: Sauerzopf, Clemens
name: Abo, Y.
name: Capon, A.
name: Diermaier, M.
name: Dupré, P.
name: Higashi, Y.
name: Ishikawa, S.
name: Kaga, C.
name: Kolbinger, B.
name: Leali, M.
name: Lehner, S.
name: Malbrunot, C.
name: Mascagna, V.
name: Massiczek, O.
name: Murtag, D. J.
name: Nagata, Y.
name: Radics, B.
name: Simon, M. C.
name: Suzuki, K.
name: Tajima, M.
name: Ulmer, S.
name: Vamosi, S.
name: von Gorp, S.
name: Venturelli, L.
name: Zmeskal, J.
name: Breuker, H.
name: Higaki, H.
name: Kanai, Y.
name: Kuroda, N.
name: Lodi Rizzini, E.
name: Matsuda, Y.
name: Widmann, E.
name: Yamazaki, Y.
Publisher: name: Zenodo
Year: 2015
Subjects: Antihydrogen
ASACUSA
Antiproton Decelerator (AD)
hyperfine structure

description: The matter - anti matter asymmetry observed in the universe today still lacks a quantitative explanation. One possibility that could contribute to the observed state could be a violation of the combined Charge-, Partiy- and Timesymmetries (CPT). To test if the CPT symmetry is broken the ASACUSA collaboration (Atomic Spectroscopy And Collisions Using Slow Antiprotons) at the CERN AD (Antiproton Decelerator) tries to produce a low temperature beam of antihydrogen - the most simple atomic system built only of anti particles.

The ground state hyperfine splitting of hydrogen is one of the most precisely determined quantities in physics. Therefore it follows naturally to test CPT invariance by comparing the ground state hyperfine splitting of hydrogen and antihydrogen at zero B field.

This contribution will focus on presenting the current state of the fully assembled spectroscopy beamline, including a field-ioniser chamber, a strip-line resonator microwave cavity, a super conducting sextupole magnet and a detector for counting antihydrogen annihilations. We will put a spotlight on the performance of the beamline and on the detection part of the spectrometer. Our spectroscopy apparatus was tested with a beam of cold hydrogen and these tests lead to a measurement of the GS-HFS of hydrogen whose precision is in good agreement with simulation. The newly developed detector is composed of a position sensitive Bismutgermanat (BGO) disc in the centre and a two layer hodoscope made of plastic scintillators that is read via silicon photo multipliers (SiPM) with self developed frontend electronics.

In addition, our first preliminary results of the detector performance with the fully assembled beamline from the 2014 beamtime at CERN are discussed.
description: Grant-in-Aid for Specially Promoted Research (No. 24000008) of  the Japan Society for the Promotion of Science (JSPS), and Pioneering Project of RIKEN, European Research Council under European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement (291242), the Austrian Ministry of Science and Research, Austrian Science Fund (FWF) DK PI (W 1252),  Università di Brescia and Istituto Nazionale di Fisica Nucleare.
title: Genotyping of Pseudomonas aeruginosa isolates from pulmonary infections in non-cystic fibrosis bronchiectasis patients
Creators: name: Hilliam, Yasmin
Publisher: name: University of Liverpool Repository
Year: 2016

description: Non-cystic fibrosis bronchiectasis (NCFBr) is a chronic, progressive respiratory disease characterised by irreversible widening of the airways and thickening of the bronchial walls. There have been large amounts of research into cystic fibrosis (CF) and very little into NCFBr, despite its prevalence in the UK having been predicted to be >10 times that of CF. The leading cause of mortality in CF is chronic bacterial lung infection, particularly with Pseudomonas aeruginosa. Transmissible strains of P. aeruginosa are associated with increased morbidity and mortality in CF. Chronic P. aeruginosa infections are also known to adversely affect the health of NCFBr patients although very little in-depth research has been performed. This work aims to investigate the diversity of populations of P. aeruginosa in NCFBr patients attending bronchiectasis services throughout England and Wales. The maintenance of P. aeruginosa strains in long-term infections in the lungs of NCFBr patients were investigated using an array tube genotyping system. The majority (15) of the 20 patients studied were found to maintain the same strain of P. aeruginosa throughout the course of infection. The population structure of P. aeruginosa isolates from NCFBr patients was investigated using both the array tube system and whole genome sequencing. The population of isolates from NCFBr patients was found to be distributed evenly throughout the general population of P. aeruginosa. Whole genome sequencing was also used to investigate the diversity of P. aeruginosa isolates from 23 individual patients and it was shown that in the majority of these (16) that all isolates were the same strain and closely related to one another. Only one of the 157 NCFBr patients was found to harbour a transmissible strain of P. aeruginosa which is a significantly lower prevalence than in CF. There is still a large disparity between our knowledge regarding CF and NCFBr and so further research into P. aeruginosa infections in NCFBr is required.
Asymptotic analysis of mode-coupling theory of active nonlinear microrheology
Creators: name: Gnann, Manuel Victor
name: Voigtmann, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We discuss a schematic model of mode-coupling theory for force-driven active nonlinear microrheology, where a single probe particle is pulled by a constant external force through a dense host medium. The model exhibits both a glass transition for the host, and a force-induced delocalization transition, where an initially localized probe inside the glassy host attains a nonvanishing steady-state velocity by locally melting the glass. Asymptotic expressions for the transient density correlation functions of the schematic model are derived, valid close to the transition points. There appear several nontrivial time scales relevant for the decay laws of the correlators. For the nonlinear friction coeffcient of the probe, the asymptotic expressions cause various regimes of power-law variation with the external force, and two-parameter scaling laws.
description: 17 pages, 12 figures
Walking in the footsteps of the Guru: Sikhs and seekers in the Indian Himalayas
Creators: name: Michaud, Heather
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: BL2018.5 .P55 M53 1998
subject: Sikhism - Doctrines.
subject: Pilgrims and pilgrimages - India.

description: Bibliography: p. 147-157
description: UARC
Willi Wegewitz, Der Urnenfriedhof von Hamburg-Marmstorf
Creators: name: Hinz, Hermann
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Willi Wegewitz, Der Urnenfriedhof von Hamburg-Marmstorf. Die Urnenfriedhöfe in Niedersachsen, Bd. 7. Hildesheim 1964. 81 Seiten, 15 Textabbildungen, 11 Grablisten, 57 Tafeln, eine Falttafel
description: Bonner Jahrbücher, Bd. 165.1965: Bonner Jahrbücher
Untitled Item
Creators: name: Ke, Feng
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 449999
subject: Other human society not elsewhere classified
classificationCode: 360304
subject: Music performance
classificationCode: 360305
subject: Music technology and recording
classificationCode: 360303
subject: Music education
classificationCode: 360302
subject: Music composition and improvisation
classificationCode: 360301
subject: Music cognition

description: Henry Purcell's opera "Dido and Aeneas" is still highly appreciated by music critics and occupies an important place in the repertoire of theaters around the world. Presented for the first time in 1689 by pupils of a boarding school in Chelsea, it turned out to be the only one of its kind not only in English, but also in world opera music. Up-to-date data on the first productions of the opera are available in the Paxton article [Рaxton 1986: 6]. The composer, for whom English masks served as examples of his first works in this genre, departed in "Dido" from the so-called seven-opera with spoken dialogues and created a work that corresponded to his understanding of opera as "singing accompanied by an appropriate action"
PROJETO EXTENSÃO CIÊNCIA & CIDADANIA: A RELEVÂNCIA DE LEVAR CIÊNCIA E SAÚDE BUCAL POR MEIO DE ESTRATÉGIAS LÚDICAS EM ESCOLA MUNICIPAL
Creators: name: Camila Maria Barbosa Procópio Marques
Publisher: name: Zenodo
Year: 2024
Subjects: saúde bucal; atividade educativa; higiene oral; experimento.

description: O projeto de Ciência & Cidadania desenvolve ações em saúde bucal nas escolas e apresenta a toda a comunidade escolar a importância da ciência para o cotidiano. O projeto tem como objetivo orientar e incentivar os alunos e professores sobre a importância dos cuidados com a higiene oral, conscientizar e promover hábitos alimentares saudáveis. O projeto foi realizado por meio de intervenções educativas, que foram realizadas utilizando estratégias lúdicas como: teatro e experimentos químicos. No teatro foi utilizado um cachorrinho de pelúcia com arcada dentária para orientar a técnica de escovação e fantoches que foram usados como personagens, para dar vida a história, da importância de preservar a saúde bucal. Estavam presentes professores, monitores e alunos. O mesmo foi realizado em crianças na faixa etária de quatro a seis anos com técnicas motivacionais e educativas, visando a importância dos hábitos alimentares associados à higiene bucal, como forma de prevenção da doença cárie na infância para constituir uma referência marcante. Também teve ilustrações de experiências químicas sobre como a ciência faz parte do nosso cotidiano. E através dessas intervenções possibilitou que as crianças cresçam sendo capazes de compreender a relevância da higiene oral e dos hábitos alimentares saudáveis.
Superradiance-like Electron Transport through a Quantum Dot
Creators: name: Schuetz, Martin J. A.
name: Kessler, Eric M.
name: Cirac, J. Ignacio
name: Giedke, Geza
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically show that intriguing features of coherent many-body physics can be observed in electron transport through a quantum dot (QD). We first derive a master equation based framework for electron transport in the Coulomb-blockade regime which includes hyperfine (HF) interaction with the nuclear spin ensemble in the QD. This general tool is then used to study the leakage current through a single QD in a transport setting. We find that, for an initially polarized nuclear system, the proposed setup leads to a strong current peak, in close analogy with superradiant emission of photons from atomic ensembles. This effect could be observed with realistic experimental parameters and would provide clear evidence of coherent HF dynamics of nuclear spin ensembles in QDs.
description: 21 pages, 10 figures
Magnetohydrodynamics on an unstructured moving grid
Creators: name: Pakmor, Ruediger
name: Bauer, Andreas
name: Springel, Volker
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Magnetic fields play an important role in astrophysics on a wide variety of scales, ranging from the Sun and compact objects to galaxies and galaxy clusters. Here we discuss a novel implementation of ideal magnetohydrodynamics (MHD) in the moving mesh code AREPO which combines many of the advantages of Eulerian and Lagrangian methods in a single computational technique. The employed grid is defined as the Voronoi tessellation of a set of mesh-generating points which can move along with the flow, yielding an automatic adaptivity of the mesh and a substantial reduction of advection errors. Our scheme solves the MHD Riemann problem in the rest frame of the Voronoi interfaces using the HLLD Riemann solver. To satisfy the divergence constraint of the magnetic field in multiple dimensions, the Dedner divergence cleaning method is applied. In a set of standard test problems we show that the new code produces accurate results, and that the divergence of the magnetic field is kept sufficiently small to closely preserve the correct physical solution. We also apply the code to two first application problems, namely supersonic MHD turbulence and the spherical collapse of a magnetized cloud. We verify that the code is able to handle both problems well, demonstrating the applicability of this MHD version of AREPO to a wide range of problems in astrophysics.
description: 11 pages, 9 figures, accepted by MNRAS
Beilage
Creators: name: Morris, John
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Beilage zu: John Morris, Munatius Planens Paulinus, Bonner Jahrb. 165, 1965, 88 ff.
description: Bonner Jahrbücher, Bd. 165.1965: Bonner Jahrbücher
title: Modelling catastrophe risk bonds
Creators: name: Shao, Jia
Publisher: name: University of Liverpool Repository
Year: 2015

description: Insurance companies are seeking more adequate liquidity funds to cover the insured property losses related to nature and man-made disasters. Past experience shows that the losses caused by catastrophic events, such as earthquakes, tsunamis, floods or hurricanes, are extremely large. One of the alternative methods of covering these extreme losses is to transfer part of the risk to the financial markets, by issuing catastrophe-linked bonds. This thesis focuses on model and value Catastrophe (CAT) risk bonds. The findings of this thesis is twofold. First, we study the pricing process for CAT bonds with different model setups. Second, based on different framework, we structured three catastrophe based (earthquake, general and nuclear risk) bonds, estimated the parameters of the model by employing real world data and obtained numerical results using Monte Carlo simulation. Comparison between different models is also conducted. The first model employed the structure of n financial and m catastrophe-independent risks, and obtain the valuation framework. This generalized extension allows an easier application in the industry. As an illustration, a structured earthquake is considered with parametric trigger type -- annual maximum magnitude of the earthquake -- and the pricing formulas are derived. The second model presents a contingent claim model with the aggregate claims following compound forms where the claim inter-arrival times are dependent on the claim sizes by employing a two-dimensional semi-Markov process. The final model derives nuclear catastrophe (N-CAT) risk bond prices by extending the previous model. A two-coverage type trigger CAT bond is analysed by adding a perturbed state into the claims system, i.e. the system stops (N-CAT bond contract terminated) immediately after a major catastrophe.
Horst Thomas (Hrsg.), Denkmalpflege für Architekten Vom Grundwissen zur Gesamtleitung
Creators: name: Fischer, Konrad
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: Rezension zu: Horst Thomas (Hrsg.), Denkmalpflege für Architekten Vom Grundwissen zur Gesamtleitung, Autoren: Emil Hädler, Friedrich Hofinann, Siegfried Miihlbauer, Michael Neumann, Alois Peitz, Reinhard Reimer, Karl-R. Seehausen, Horst Thomas Köln: Verlagsgesellschaft Rudolf Müller 1998, 204 S., zahlreiche Fotos und Zeichnungen, Format DIN A4, geb. ISBN 3-481-01241-1
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 40 Nr. 2 (1999): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
High-J CO emission in the Cepheus E protostellar outflow observed with SOFIA/GREAT
Creators: name: Gómez-Ruiz, A. I.
name: Gusdorf, A.
name: Leurini, S.
name: Codella, C.
name: Güsten, R.
name: Wyrowski, F.
name: Requena-Torres, M. A.
name: Risacher, C.
name: Wampfler, S. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present and analyze two spectrally resolved high-J CO lines towards the molecular outflow Cep E, driven by an intermediate-mass class 0 protostar. Using the GREAT receiver on board SOFIA, we observed the CO (12--11) and (13--12) transitions (E_u ~ 430 and 500 K, respectively) towards one position in the blue lobe of this outflow, that had been known to display high-velocity molecular emission. We detect the outflow emission in both transitions, up to extremely high velocities (~ 100 km/s with respect to the systemic velocity). We divide the line profiles into three velocity ranges that each have interesting spectral features: standard, intermediate, and extremely high-velocity. One distinct bullet is detected in each of the last two. A large velocity gradient analysis for these three velocity ranges provides constraints on the kinetic temperature and volume density of the emitting gas, >~ 100 K and > ~ 10^4 cm^-3, respectively. These results are in agreement with previous ISO observations and are comparable with results obtained by Herschel for similar objects. We conclude that high-J CO lines are a good tracer of molecular bullets in protostellar outflows. Our analysis suggests that different physical conditions are at work in the intermediate velocity range compared with the standard and extremely high-velocity gas at the observed position.
description: Accepted for publication in A&A (SOFIA/GREAT special issue)
Georg Dehio, Handbuch der Deutschen Kunstdenkmäler: Sachsen-Anhalt II (Regierungsbezirke Dessau und Halle)
Creators: name: Hildebrandt, Siegfried
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: Rezension zu: Georg Dehio, Handbuch der Deutschen Kunstdenkmäler: Sachsen-Anhalt II (Regierungsbezirke Dessau und Halle), Bearb. von Ute Bednarz, Folkhard Cremer, Hans-Joachim Krause u. a. München/Berlin: Deutscher Kunstverlag 1999, 1001 S., 17 Kten, geh., ISBN 3-422-03065-4.
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 40 Nr. 3 (1999): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
La formule des traces pour les revêtements de groupes réductifs connexes. III. Le développement spectral fin
Creators: name: Li, Wen-Wei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F72 (Primary), 11F70 (Secondary)

description: We pursue Arthur's invariant trace formula for certain coverings of connected reductive groups by deducing explicit formulas for its spectral side. This is based on some results in local harmonic analysis from an earlier preprint. The arguments are due to Arthur, and we will explain the necessary fine-tunings for coverings.
description: 30 pages
[Annoncen]
Creators: name: Die Redaktion
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 40 Nr. 3 (1999): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Quantum inner-product metrics via recurrent solution of Dieudonne equation
Creators: name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A given Hamiltonian matrix H with real spectrum is assumed tridiagonal and non-Hermitian. Its possible Hermitizations via an amended, ad hoc inner-product metric are studied. Under certain reasonable assumptions, all of these metrics are shown obtainable as recurrent solutions of the hidden Hermiticity constraint called Dieudonne equation. In this framework even the two-parametric Jacobi-polynomial real- and asymmetric-matrix N-site lattice Hamiltonian is found tractable non-numerically at all N.
description: 21 pp
Generation of helical magnetic fields from inflation
Creators: name: Jain, Rajeev Kumar
name: Durrer, Ruth
name: Hollenstein, Lukas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The generation of helical magnetic fields during single field inflation due to an axial coupling of the electromagnetic field to the inflaton is discussed. We find that such a coupling always leads to a blue spectrum of magnetic fields during slow roll inflation. Though the helical magnetic fields further evolve during the inverse cascade in the radiation era after inflation, we conclude that the magnetic fields generated by such an axial coupling can not lead to observed field strength on cosmologically relevant scales.
description: 4 pages, 1 figure; Contribution to the proceedings of the International Conference on Gravitation and Cosmology (ICGC), Goa, India, December, 2011
Evidence for collapsing fields in corona and photosphere during the 15 February 2011 X2.2 flare: SDO AIA and HMI Observations
Creators: name: Gosain, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use high-resolution images of the sun obtained by the SDO/AIA instrument to study the evolution of the coronal loops in a flaring solar active region. During 15 February 2011 a X-2.2 class flare occurred in NOAA 11158, a $βγδ$ sunspot complex. We identify three distinct phases of the coronal loop dynamics during this event: (i) {\it Slow rise phase}: slow rising motion of the loop-tops prior to the flare in response to slow rise of the underlying flux rope, (ii) {\it Collapse phase}: sudden contraction of the loop-tops with lower loops collapsing earlier than the higher loops, and (iii) {\it Oscillation phase}: the loops exhibit global kink oscillations after the collapse phase at different periods, with period decreasing with decreasing height of the loops. The period of these loop oscillations is used to estimate the field strength in the coronal loops of different loop lengths in this active region. Further, we also use SDO/HMI observations to study the photospheric changes close to the polarity inversion line (PIL). The longitudinal magnetograms show step-wise permanent decrease in the magnetic flux after the flare over a coherent patch along the PIL. Further, we examine the HMI Stokes I,Q,U,V profiles over this patch and find that the Stokes-V signal systematically decreases while the Stokes-Q and U signal increases after the flare. These observations suggest that close to the PIL the field configuration became more horizontal after the flare. We also use HMI vector magnetic field observations to quantify the changes in the field inclination angle and found an inward collapse of the field lines towards the polarity inversion line (PIL) by $\sim$ 10$^\circ$. These observations are consistent with the "coronal implosion" scenario and its predictions about flare related photospheric field changes.
description: 27 pages, 7 figures, in press (Astrophysical Journal)
Dispersion stability and thermal conductivity of propylene glycol-based nanofluids
Creators: name: Palabiyik, Ibrahim
name: Musina, Zenfira
name: Witharana, Sanjeeva
name: Ding, Yulong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The dispersion stability and thermal conductivity of propylene glycol based nanofluids containing Al2O3 and TiO2 nanoparticles were studied in the temperature range of 20 to 80 °C. Nanofluids with different concentrations of nanoparticles were formulated by the two-step method without use of dispersants. In contrast to the common belief the average particle size of nanofluids was observed to decrease with increasing temperature. The nanofluids showed excellent stability over the temperature range of interest. Thermal conductivity enhancement for both of studied nanofluids was a non-linear function of concentration while was temperature independent. Theoretical analyses were performed using existing models and comparisons were made with experimental results. The model based on the aggregation theory appears to yield the best fit. Keywords: Nanofluids, Propylene glycol, Alumina nanoparticles, Titania nanoparticles, Thermal conductivity, Dispersion stability.
High Performance Controllers for Speed and Position Induction Motor Drive using New Reaching Law
Creators: name: Rezgui, Salah Eddine
name: Benalla, Hocine
Publisher: name: arXiv
Year: 2011
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper present new approach in robust indirect rotor field oriented (IRFOC) induction motor (IM) control. The introduction of new exponential reaching law (ERL) based sliding mode control (SMC) improve significantly the performances compared to the conventional SMC which are well known susceptible to the annoying chattering phenomenon, so, the elimination of the chattering is achieved while simplicity and high performance speed and position tracking are maintained. Simulation results are given to discuss the performances of the proposed control method.
description: 16 pages, 6 figures, 22 references
title: The Influence of Watershed Restoration Initiative Habitat Treatments on Mule Deer Relative Use and Fawn Production in Utah
Creators: name: Solberg, Jaylin
Publisher: name: Utah State University
Year: 2023

description: Multiple factors could be the cause of mule deer (Odocoileus hemionus) population decline across the West such as an increase in non-native vegetation, human expansion, climate change, or a combination of these. Populations of mule deer generate substantial revenue for local communities and hold ecological, cultural, and social value. Therefore, wildlife researchers are increasing their efforts in improving environmental conditions that support mule deer growth. The Utah Department of Natural Resources and partners have taken proactive measures through the Utah Watershed Restoration Initiative (WRI) to improve mule deer habitats by restoring these environments to improve their quality for humans and wildlife. The purpose of my research was to determine which restoration efforts have the greatest impact on deer use (Chapter 2) and fawn production (Chapter 3). Chapter 2 showed that patterns in the types of available vegetation surrounding WRI restoration treatments out to multiple kilometer extents influence mule deer use. During both summer and winter seasons, deer use was higher on restoration sites that had greater amounts of herbicide treatments (both seasons), and greater amounts of fuels management treatment areas (summer only) in the larger landscape. Furthermore, we predict that the highest mule deer use would be seen in areas where 100% of the landscape is made up of entirely herbicide treatments restoration treatments. In Chapter 3, while we saw a negative relationship between the total acreage of WRI treatments completed in deer hunt units and fawn production, it appears as though the relative amount of one specific type of treatment, herbicide treatments, may improve fawn production. These discoveries can provide wildlife researchers with the necessary tools to help strategically plan habitat restoration efforts in the future for mule deer in the intermountain-west to eventually reverse broad population declines.
{mctq}: An R Package for the Munich ChronoType Questionnaire
Creators: name: Vartanian, Daniel
name: Benedito-Silva, Ana Amelia
Publisher: name: Zenodo
Year: 2021
Subjects: sleep
chronobiology
mctq
data wrangling
reproducibility

description: Poster for the XVI Latin American Symposium on Chronobiology (LASC). Learn more about {mctq} by visiting the package website: gipso.github.io/mctq.
Tampering with digital evidence is hard: The case of main memory images
Creators: name: Schneider, Janine
name: Wolf, Julian
name: Freiling, Felix
Publisher: name: CISPA
Year: 2024

description: Tampered digital evidence may jeopardize its correct interpretation. To assess the risks in a court of law, it is helpful to quantify the necessary effort to perform a convincing manipulation of digital evidence. Based on a sequence of controlled experiments with graduate students and digital forensics professionals, we study the effort to manipulate copies of main memory taken during a digital investigation. Confirming previous results on hard disc image tampering, manipulating main memory dumps can be considered hard in the sense that most forgeries were successfully detected. However, while the effort to detect a manipulation is generally bounded by the tampering effort, some forgeries fooled the analysts and caused analysis effort that was higher than the manipulation effort. The detection effort by graduate students, however, was generally higher than that of professionals. We study different manipulation and detection approaches and their success. Overall, tampering with main memory dumps appears to be harder than tampering with hard disc images but the probability to fool an analyst is higher too.
Structural evolution of the Isaac Lake synclinorium, Cariboo Mountains, British Columbia
Creators: name: Reid, Leslie
Publisher: name: University of Calgary
Year: 1997
Subjects: subject: QE607.5 .C3 R45 1997
subject: Geology, Structural - British Columbia - Cariboo Mountains
subject: Geosynclines - British Columbia

description: Bibliography: p. 153-166.
Yukawas, G-flux, and Spectral Covers from Resolved Calabi-Yau's
Creators: name: Marsano, Joseph
name: Schafer-Nameki, Sakura
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the resolution procedure of Esole and Yau arXiv:1107.0733 to study Yukawa couplings, G-flux, and the emergence of spectral covers from elliptically fibered Calabi-Yau's with a surface of A_4 singularities. We provide a global description of the Esole-Yau resolution and use it to explicitly compute Chern classes of the resolved 4-fold, proving the conjecture of arXiv:0908.1784 for the Euler character in the process. We comment on the physical implications of the surprising singular fibers in codimension 2 and 3 in arXiv:1107.0733 and emphasize a group theoretic interpretation based on the A_4 weight lattice. We then construct explicit G-fluxes by brute force in one of the 6 birationally equivalent Esole-Yau resolutions, quantize them explicitly using our result for the second Chern class, and compute the spectrum and flux-induced 3-brane charges, finding agreement with results and conjectures of local models in all cases. Finally, we provide a precise description of the spectral divisor formalism in this setting and sharpen the procedure described in arXiv:1107.1718 in order to explicitly demonstrate how the Higgs bundle spectral cover of the local model emerges from the resolved Calabi-Yau geometry. Along the way, we demonstrate explicitly how the quantization rules for fluxes in the local and global models are related.
description: 68 pages (41 pages + 4 appendices)
A variational approach for the Quantum Inverse Scattering Method
Creators: name: Birrell, A.
name: Isaac, P. S.
name: Links, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce a variational approach for the Quantum Inverse Scattering Method to exactly solve a class of Hamiltonians via Bethe ansatz methods. We undertake this in a manner which does not rely on any prior knowledge of integrability through the existence of a set of conserved operators. The procedure is conducted in the framework of Hamiltonians describing the crossover between the low-temperature phenomena of superconductivity, in the Bardeen-Cooper-Schrieffer (BCS) theory, and Bose-Einstein condensation (BEC). The Hamiltonians considered describe systems with interacting Cooper pairs and a bosonic degree of freedom. We obtain general exact solvability requirements which include seven subcases which have previously appeared in the literature.
description: 18 pages, no eps figures
Handout / Intermedialität
Creators: name: Peter Oberosler
Publisher: name: Zenodo
Year: 2023

description: Handout for the Seminar: Intermedialtiät at University Innsbruck / Musicology / SS 2014;
Instructor: Prof. Dr. Monika Fink-Naumann / Speaker: Peter Oberosler;
Topic: Intermedialität / Franz Liszt / program music
Type III factors with unique Cartan decomposition
Creators: name: Houdayer, Cyril
name: Vaes, Stefaan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove that for any free ergodic nonsingular nonamenable action Γ \actson (X,μ) of all Γ in a large class of groups including all hyperbolic groups, the associated group measure space factor $L^\infty(X) \rtimes Γ$ has L^\infty(X) as its unique Cartan subalgebra, up to unitary conjugacy. This generalizes the probability measure preserving case that was established in [PV12]. We also prove primeness and indecomposability results for such crossed products, for the corresponding orbit equivalence relations and for arbitrary amalgamated free products $M_1 *_B M_2$ over a subalgebra B of type I.
description: v2: we only fixed a LaTeX issue
The effects of cognitive learning styles on human-computer interaction: implications for computer-aided learning
Creators: name: Ross, Jonathan Lewis
Publisher: name: University of Calgary
Year: 1997
Subjects: subject: LB1028.43 .R67 1997
subject: Additonal Copy: 370 EDC 1997 ROS
subject: Cognitive styles
subject: Learning, Psychology of
subject: Human-computer interaction
subject: Computer-assisted instruction

description: Bibliography: p. 100-112.
The Complexity of the Empire Colouring Problem
Creators: name: McGrae, Andrew R. A.
name: Zito, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: We investigate the computational complexity of the empire colouring problem (as defined by Percy Heawood in 1890) for maps containing empires formed by exactly $r > 1$ countries each. We prove that the problem can be solved in polynomial time using $s$ colours on maps whose underlying adjacency graph has no induced subgraph of average degree larger than $s/r$. However, if $s \geq 3$, the problem is NP-hard even if the graph is a forest of paths of arbitrary lengths (for any $r \geq 2$, provided $s < 2r - \sqrt(2r + 1/4+ 3/2)$. Furthermore we obtain a complete characterization of the problem's complexity for the case when the input graph is a tree, whereas our result for arbitrary planar graphs fall just short of a similar dichotomy. Specifically, we prove that the empire colouring problem is NP-hard for trees, for any $r \geq 2$, if $3 \leq s \leq 2r-1$ (and polynomial time solvable otherwise). For arbitrary planar graphs we prove NP-hardness if $s<7$ for $r=2$, and $s < 6r-3$, for $r \geq 3$. The result for planar graphs also proves the NP-hardness of colouring with less than 7 colours graphs of thickness two and less than $6r-3$ colours graphs of thickness $r \geq 3$.
description: 23 pages, 12 figures
Determining All Universal Tilers
Creators: name: Wang, David G. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B45, 52C20

description: A universal tiler is a convex polyhedron whose every cross-section tiles the plane. In this paper, we introduce a certain slight-rotating operation for cross-sections of pentahedra. Based on a selected initial cross-section and by applying the slight-rotating operation suitably, we prove that a convex polyhedron is a universal tiler if and only if it is a tetrahedron or a triangular prism.
description: 18 pages, 12 figures
Solutions For A Generalized Fractional Anomalous Diffusion Equation
Creators: name: Lv, Long-jin
name: Xiao, Jian-Bin
name: Zhang, Lin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate the solutions for a generalized fractional diffusion equation that extends some known diffusion equations by taking a spatial time-dependent diffusion coefficient and an external force into account, which subjects to the natural boundaries and the generic initial condition. We obtain explicit analytical expressions for the probability distribution and study the relation between our solutions and those obtained within the maximum entropy principle by using the Tsallis entropy.
description: 10 pages, LaTeX, 3 figures
Mkh1, a novel MAP kinase kinase in schizosaccharomyces pombe
Creators: name: Sengar, Ameet Singh
Publisher: name: University of Calgary
Year: 1997
Subjects: subject: QD623 .S23 S46 1997
subject: Schizosaccharomyces pombe
subject: Protein kinases

description: Bibliography: p. 81-94.
Assessing the Significance of Apparent Correlations Between Radio and Gamma-ray Blazar Fluxes
Creators: name: Pavlidou, V.
name: Richards, J. L.
name: Max-Moerbeck, W.
name: King, O. G.
name: Pearson, T. J.
name: Readhead, A. C. S.
name: Reeves, R.
name: Stevenson, M. A.
name: Angelakis, E.
name: Fuhrmann, L.
name: Zensus, J. A.
name: Giroletti, M.
name: Reimer, A.
name: Healey, S. E.
name: Romani, R. W.
name: Shaw, M. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Whether a correlation exists between the radio and gamma-ray flux densities of blazars is a long-standing question, and one that is difficult to answer confidently because of various observational biases which may either dilute or apparently enhance any intrinsic correlation between radio and gamma-ray luminosities. We introduce a novel method of data randomization to evaluate quantitatively the effect of these biases and to assess the intrinsic significance of an apparent correlation between radio and gamma-ray flux densities of blazars. The novelty of the method lies in a combination of data randomization in luminosity space (to ensure that the randomized data are intrinsically, and not just apparently, uncorrelated) and significance assessment in flux space (to explicitly avoid Malmquist bias and automatically account for the limited dynamical range in both frequencies). The method is applicable even to small samples that are not selected with strict statistical criteria. For larger samples we describe a variation of the method in which the sample is split in redshift bins, and the randomization is applied in each bin individually; this variation is designed to yield the equivalent to luminosity-function sampling of the underlying population in the limit of very large, statistically complete samples. We show that for a smaller number of redshift bins, the method yields a worse significance, and in this way it is conservative in that it does not assign a stronger, artificially enhanced significance. We demonstrate how our test performs as a function of number of sources, strength of correlation, and number of redshift bins used, and we show that while our test is robust against common-distance biases and associated false positives for uncorrelated data, it retains the power of other methods in rejecting the null hypothesis of no correlation for correlated data.
description: (corrected affiliations) 14 pages, 11 figures, accepted for publication in ApJ
The effects of a hot gaseous halo on disc thickening in galaxy minor mergers
Creators: name: Moster, Benjamin P.
name: Maccio', Andrea V.
name: Somerville, Rachel S.
name: Naab, Thorsten
name: Cox, Thomas J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We employ hydrodynamical simulations to study the effects of dissipational gas physics on the vertical heating and thickening of disc galaxies during minor mergers. For the first time we present a suite of simulations that includes a diffuse, rotating, cooling, hot gaseous halo, as predicted by cosmological hydrodynamical simulations as well as models of galaxy formation. We study the effect of this new gaseous component on the vertical structure of a Milky Way-like stellar disc during 1:10 and 1:5 mergers. For 1:10 mergers we find no increased final thin disc scale height compared to the isolated simulation, leading to the conclusion that thin discs can be present even after a 1:10 merger if a reasonable amount of hot gas is present. The reason for this is the accretion of new cold gas, leading to the formation of a massive new thin stellar disc that dominates the surface brightness profile. In a previous study, in which we included only cold gas in the disk, we showed that the presence of cold gas decreased the thickening by a minor merger relative to the no-gas case. Here, we show that the evolution of the scale height in the presences of a cooling hot halo is dominated by the formation of the new stellar disc. In this scenario, the thick disc is the old stellar disc that has been thickened in a minor merger at z>1, while the thin disc is the new stellar disc that reforms after this merger. In addition, we study the evolution of the scale height during a 1:5 merger and find that a thin disc can be present even after this merger, provided enough hot gas is available. The final scale height in our simulations depends on the mass of the hot gaseous halo, the efficiency of the winds and the merger mass ratio. We find post-merger values in the range 0.5
description: 14 pages, 10 figures, 2 tables, submitted to MNRAS
Regenerating a Symmetry in Asymmetric Dark Matter
Creators: name: Buckley, Matthew R.
name: Profumo, Stefano
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Asymmetric dark matter theories generically allow for mass terms that lead to particle-antiparticle mixing. Over the age of the Universe, dark matter can thus oscillate from a purely asymmetric configuration into a symmetric mix of particles and antiparticles, allowing for pair-annihilation processes. Additionally, requiring efficient depletion of the primordial thermal (symmetric) component generically entails large annihilation rates. We show that unless some symmetry completely forbids dark matter particle-antiparticle mixing, asymmetric dark matter is effectively ruled out for a large range of masses, for almost any oscillation time-scale shorter than the age of the Universe.
description: 5 pages, 2 figures
title: Trader and his son: how a trader taught his son how to handle the ups and downs of commerce
Creators: name: Michaud, Alexis
Publisher: name: Pangloss
Year: 2014
Subjects: subject: Linguistique
subject: Na

description: A narrative about how a trader taught his son to manage trade wisely. To his son’s surprise, the father asked him to collect stories along the way, as gifts to the father, instead of buying presents. The father’s message was that traders must avoid being left without sufficient stocks of food when they come back, and therefore should not spend their money hastily on pretty objects on sale at distant places.