cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Density of states of a graphene in the presence of strong point defects
Creators: name: Huang, Bor-Luen
name: Chang, Ming-Che
name: Mou, Chung-Yu
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The density of states near zero energy in a graphene due to strong point defects with random positions are computed. Instead of focusing on density of states directly, we analyze eigenfunctions of inverse T-matrix in the unitary limit. Based on numerical simulations, we find that the squared magnitudes of eigenfunctions for the inverse T-matrix show random-walk behavior on defect positions. As a result, squared magnitudes of eigenfunctions have equal {\it a priori} probabilities, which further implies that the density of states is characterized by the well-known Thomas-Porter type distribution. The numerical findings of Thomas-Porter type distribution is further derived in the saddle-point limit of the corresponding replica field theory of inverse T-matrix. Furthermore, the influences of the Thomas-Porter distribution on magnetic and transport properties of a graphene, due to its divergence near zero energy, are also examined.
description: 6 figures
Geomorphology and substrate of Galway Bay, Western Ireland
Creators: name: McCullagh, Denise
name: Benetti, Sara
name: Plets, Ruth
name: Sacchetti, Fabio
name: O’Keeffe, Eimear
name: Lyons, Kieran
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: A combination of multibeam bathymetry and backscatter, LiDAR altimetry and bathymetry, satellite images, and hydrodynamic model outputs were used to map the seafloor and coastline of Galway Bay (western Ireland). This is the first time these multiple datasets have been integrated into a single combined geomorphological and substrate map. The substrate of the bay is predominantly mud and sand with bedrock outcropping extensively around the coastline. The main depositional features are dunes, while the main erosional features are scours and outcropping bedrock. Hydrodynamic model outputs show good correlation between the direction and intensity of prevailing currents and the location and shape of the features in the bay. This indicates that although Galway Bay was shaped glacially through the passage of the British-Irish Ice Sheet across the bay and ensuing glacial and marine sediment deposition, many of the mapped seafloor landforms are modern and current-induced.
Terminal harmony: Rituals of death and social cohesion in colonial Puebla de los Ángeles
Creators: name: Hosselkus, Erika
Publisher: name: University of Notre Dame
Year: 2023

description: Colonial Puebla de los Ángeles’ mixed population of Spaniards, creoles, Native Americans, and groups of African descent confronted death frequently. Epidemic disease combined with mundane illnesses and infirmities made dying a quotidian and familiar experience among all social groups. The city’s religious and secular officials recognized death as an important rite of passage and sponsored and supported scripted rituals of death designed to guide the soul to its final resting place. As they aided individual souls, priests, city council members, and cathedral representatives in Puebla also used the sacraments, spiritual and practical charity, and elaborate ceremonies including royal exequies (exequias reales), to unite the diverse city of Puebla in a common Catholic faith. This article explores these official attempts to encourage and promote a Catholic unity at death while also demonstrating how repeated bouts of epidemic disease, limited resources, and racial and socioeconomic differences served to nuance and temper the vision of a shared “terminal harmony” promoted and encouraged by the city’s officials.
Riemannian submersions from almost contact metric manifolds
Creators: name: Ianus, Stere
name: Ionescu, Adrian Mihai
name: Mocanu, Raluca
name: Vilcu, Gabriel Eduard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper we obtain the structure equation of a contact-complex Riemannian submersion and give some applications of this equation in the study of almost cosymplectic manifolds with Kaehler fibres.
description: Abh. Math. Semin. Univ. Hamb., to appear
Multi-dimensional invariant detection for cyber-physical system security : a case study of smart meters and smart medical devices.
Creators: name: Raiyat Aliabadi, Maryam
Publisher: name: University of British Columbia
Year: 2018

description: Cyber-Physical Systems (CPSes) are being widely deployed in security- critical scenarios such as smart homes and medical devices. Unfortunately, the connectedness of these systems and their relative lack of security measures makes them ripe targets for attacks. Specification-based Intrusion Detection Systems (IDS) have been shown to be effective for securing CPSs. Unfortunately, deriving invariants for capturing the specifications of CPS systems is a tedious and error-prone process. Therefore, it is important to dynamically monitor the CPS system to learn its common behaviors and formulate invariants for detecting security attacks. Existing techniques for invariant mining only incorporate data and events, but not time. However, time is central to most CPSes, and hence incorporating time in addition to data and events, is essential for achieving low false positives and false negatives. This thesis proposes ARTINALI : A Real-Time-specific Invariant iNfer- ence ALgorIthm, which mines dynamic system properties by incorporating time as a first-class property of the system. We build ARTINALI-based Intrusion Detection Systems (IDSes) for two CPSes, namely smart meters and smart medical devices, and measure their efficacy. We find that the ARTINALI-based IDS significantly reduces the ratio of false positives and false negatives by 16 to 48% (average 30.75%) and 89 to 95% (average 93.4%) respectively over other dynamic invariant detection tools. Furthermore, it incurs about 32% performance overhead, which is comparable to other invariant detection techniques.
Coulomb Gas Partition Function of a Layered Loop Model
Creators: name: Shimada, Hirohiko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a two-dimensional bi-layered loop model with a certain interlayer coupling and study its spectrum on a torus. Each layer consists of an $O(n)$ model on a honeycomb lattice with periodic boundary conditions; these layers are stacked such that the links of the lattice intersect each other. A complex Boltzmann weight $λ$ with unit modulus is assigned to each intersection of two loops each from each layer. The model is reduced to an inhomogeneous vertex model at a special point of parameters. The continuum partition function is represented, based on the idea of the Coulomb gas, by a path integral over two compact bosonic fields. The modular invariance of the partition function follows naturally. Further, because of the topological nature of the interlayer coupling, the fluctuation of loops decomposes into a local and a global part. The existence of the latter leads to a sum over all the pairs of torus knots, which can be Poisson ressummed by the Möbius inversion formula. This reveals the operator content of the theory. The multiplicity of each operator is explicitly given by a combination of two Ramanujan sums. We calculate each scaling dimension as a function of $λ$. We present the flow of dimensions which connects the decoupled-$O(1)$ models at $λ=1$ and the layered-$O(1)$ model with the non-trivial coupling $λ=-1$. The lower spectrum in the latter model is related to that of a known coset model.
description: 22 pages, 7 figures, uses iopart.cls
Novel dynamical symmetries of asymmetrically doubly excited two-electron-atoms
Creators: name: Richter, Klaus
name: Wintgen, Dieter
name: Briggs, J.
name: Solov'ev, E. A.
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik

description: The authors study a new class of long-lived resonances of doubly excited two-electron atoms. The states are characterized by a highly polarized inner electron located near the axis between the nucleus and a dynamically localized outer electron. Classical mechanics studies prove the stability of the corresponding classical motion and allow for EBK quantization to obtain semiclassical energies. The resonance states are treated further within the framework of a single- channel adiabatic approximation, where the inner electron is prescribed by a polarized molecular type wavefunction. The adiabatic energies as well as the semiclassical results are in good agreement with resonance energies obtained by highly accurate solutions of the full three-body Schrodinger equation. There is a one-to-one correspondence between approximate quantum numbers derived from the semiclassical and from the adiabatic approach, both of which explain the nodal structures of the ab initio quantum wavefunctions reflecting the approximate dynamical symmetries of the problem.
Thermal photons in QGP and non-ideal effects
Creators: name: Bhatt, Jitesh R.
name: Mishra, Hiranmaya
name: Sreekanth, V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the thermal photon production-rates using one dimensional boost-invariant second order relativistic hydrodynamics to find proper time evolution of the energy density and the temperature. The effect of bulk-viscosity and non-ideal equation of state are taken into account in a manner consistent with recent lattice QCD estimates. It is shown that the \textit{non-ideal} gas equation of state i.e $ε-3\,P\,\neq 0$ behaviour of the expanding plasma, which is important near the phase-transition point, can significantly slow down the hydrodynamic expansion and thereby increase the photon production-rates. Inclusion of the bulk viscosity may also have similar effect on the hydrodynamic evolution. However the effect of bulk viscosity is shown to be significantly lower than the \textit{non-ideal} gas equation of state. We also analyze the interesting phenomenon of bulk viscosity induced cavitation making the hydrodynamical description invalid. We include the viscous corrections to the distribution functions while calculating the photon spectra. It is shown that ignoring the cavitation phenomenon can lead to erroneous estimation of the photon flux.
description: 11 pages, 13 figures; accepted for publication in JHEP
Geomorphology of the upper Kalguty Basin, Ukok Plateau, Russian Altai mountains
Creators: name: Deline, Philip
name: Ravanel, Ludovic
name: Delannoy, Jean-Jacques
name: Le Roy, Melaine
name: Molodin, Vyacheslav I.
name: Cheremisim, Dimitri V.
name: Zotkina, Lydia V.
name: Cretin, Catherine
name: Geneste, Jean-Michel
name: Plisson, Hugues
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Cancer
subject: Plant Biology

description: As part of an archaeological research project, we investigate the geomorphology of the cold and arid study area by combining field mapping with use of orthoimages and DEM. To the north of a broad trunk valley floor, gentle slopes continuously vegetated culminate around 3000 m, while to the south steep slopes reaching to 3500 m are deeply incised and covered mainly by regolith. The basin has been intensively glaciated as evidenced by the till covering the gentler slopes, several morainic complexes, kame terraces and roches moutonnées. The present morphodynamics of this permafrost-affected basin is mainly periglacial, with blockfields, solifluction lobes, patterned ground and rock glaciers on gentle slopes to high-elevated flat terrain, and block slopes and rockfall talus on steeper slopes. Large alluvial fans at the outlet of the steep lateral valleys constrain the anastomosing channel of the Kalguty river. Active braided channels in those valleys evidence seasonal high peak discharge.
Holography and the Coleman-Mermin-Wagner theorem
Creators: name: Anninos, Dionysios
name: Hartnoll, Sean A.
name: Iqbal, Nabil
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In 2+1 dimensions at finite temperature, spontaneous symmetry breaking of global symmetries is precluded by large thermal fluctuations of the order parameter. The holographic correspondence implies that analogous effects must also occur in 3+1 dimensional theories with gauged symmetries in certain curved spacetimes with horizon. By performing a one loop computation in the background of a holographic superconductor, we show that bulk quantum fluctuations wash out the classical order parameter at sufficiently large distance scales. The low temperature phase is seen to exhibit algebraic long range order. Beyond the specific example we study, holography suggests that IR singular quantum fluctuations of the fields and geometry will play an interesting role for many 3+1 dimensional asymptotically AdS spacetimes with planar horizon.
description: 1+24 pages. 1 figure
Geodynamic model and tectono-structural framework of the Bengal Basin and its surroundings
Creators: name: Hossain, Md. Sakawat
name: Xiao, Wenjiao
name: Khan, Md. Sharif Hossain
name: Chowdhury, Khalil R.
name: Ao, Songjian
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: We present a brief, but precise description of the geodynamic evolution, and tectono-structural framework of the Bengal Basin. The tectonic map (Main Map) at 1:12,50,000 scale should be considered as a first attempt to provide a more comprehensive and accurate geotectonic cartography of the entire region, with respect to the available maps in the published literatures, and in the light of scientific advances in geodynamics, tectonics and structures reached in the last decades plus new geological field works carried out in some key sectors of the Bengal Basin. The tectonic map of the Bengal Basin improves the knowledge of the geometry of the basin boundary, tectonic settings and relevant structures, and its relation to the collision of the Indian and the Burmese plates. Three schematic geological cross-sections illustrate the tectonic architecture of the basin in depth as well as surroundings. The latest understanding of the present-day geodynamics would help to develop advanced kinematic and dynamic modelling of the Bengal Basin in relation to the pre- and post-collisional stages of the Indian Plate.
The dressed atom as binary phase modulator: towards attojoule/edge optical phase-shift keying
Creators: name: Kerckhoff, Joseph
name: Armen, Michael A.
name: Pavlichin, Dmitri S.
name: Mabuchi, Hideo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nanophotonic technologies offer great promise for ultra-low power optical signal processing, but relatively few nonlinear-optical phenomena have yet been explored as bases for robust digital modulation/switching~\cite{Yang07,Fara08,Liu10,Noza10}. Here we show that a single two-level system (TLS) coupled strongly to an optical resonator can impart binary phase modulation on a saturating probe beam. Our experiment relies on spontaneous emission to induce occasional transitions between positive and negative phase shifts---with each such edge corresponding to a dissipated energy of just one photon ($\approx 0.23$ aJ)---but an optical control beam could be used to trigger additional phase switching at signalling rates above this background. Although our ability to demonstrate controlled switching in our atom-based experiment is limited, we discuss prospects for exploiting analogous physics in a nanophotonic device incorporating a quantum dot as the TLS to realize deterministic binary phase modulation with control power in the aJ/edge regime.
description: 7 pages, 4 figures
The multi-levelled organization of cell migration : from individual cells to tissues
Creators: name: Knutsdottir, Hildur
Publisher: name: University of British Columbia
Year: 2018

description: Cell migration is a complex interplay of biochemical and biophysical mechanisms. I investigate the link between individual and collective cell behaviour using mathematical and computational modelling. Specifically, I study: (1) cell-cell interactions in a discrete framework with a spatial sensing range, (2) migration of a cluster of cells during zebrafish (Danio rerio) development, and (3) collective migration of cancer cells and their interactions with the extracellular-matrix (ECM). My 1D model (1), is approximated by a continuum equation and investigated using asymptotic approximations, steady-state analysis, and linear stability analysis. Analysis and computations characterize regimes corresponding to cell clustering, and provide a link between micro and macro-scale parameters. Results suggest that drift (i.e. due to chemotaxis), can disrupt the formation of cellular aggregates. In (2), I investigate spontaneous polarization of a cell-cluster (the posterior lateral line primordium, PLLP) in zebrafish development. I use a cell-based computational framework (hybrid discrete cell model, HyDiCell3D) coupled with differential equation model to track the segregation and migration of the PLLP. My model includes mutual inhibition between the diffusible growth factors Wnt and FGF. I find that a non-uniform degradation of an extracellular chemokine (CXCL12a) and chemotaxis is essential for long-range cohesive migration. Results compare favourably with data from the Chitnis lab (NIH). I continue using HyDiCell3D in (3) to elucidate mechanisms that facilitate cancer invasion. I focus on: wound healing in a cell-sheet (2D epithelium), and cell-clusters (3D spheroids) embedded in ECM with internal signalling mediated by podocalyxin, a trans-membrane molecule. Experimental data from the Roskelley lab (UBC) motivates the model derivation. I use the models to investigate the role of cell-cell and cell-ECM adhesion in collective migration as well as the emergence of a distinct phenotype (leader-cells) that guide the migration. ECM induced disruption in the localization of podocalyxin on the cell membrane is captured in the model along with morphological changes of spheroids. The model predicts that cell polarity and cell division axis influence the invasive potential. Lastly, I developed quantitative methods for image analysis and automated tracking of cells in a densely packed environment to compare modelling results and biological data.
Evolutionary controllers for identifying viable regimes and obtaining optimal performance in precision inkjet systems
Creators: name: Snyder, Brent Andrew
name: 0000-0002-9684-0383
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Inkjet printing
Evolutionary algorithms

description: Drop on demand piezoelectric inkjets have become an important device for direct patterning and adaptive material deposition in micro- and nano-fabrication applications. Key performance, reliability, and cost metrics for piezo-jets include drop volume minimization, drop volume accuracy and precision, drop placement accuracy, drop velocity, hours of continuous operation, and throughput. Accurately predicting drop formation from an actuation waveform using physics-based models is challenging as such models require knowledge of several inkjet parameters that cannot be determined non-destructively. Current practice involves ad-hoc manual recalibration of the actuation waveform to obtain reliable jetting of a variety of materials. This prevents the use of higher order waveforms defined by large numbers of parameters, where such waveforms have been demonstrated in the literature to achieve more aggressive performance metrics than lower order waveforms. This dissertation presents automatic piezo-jet waveform tuning methods based on evolutionary algorithms and computer-vision-based monitoring drops in-flight and drops that have been dispensed onto a substrate. Actuating and monitoring a piezo-jet as part of a “machine-in-the-loop” optimization scheme circumvents the need for complex forward models, as key performance metrics are estimated from images of actual jetted drops. Automatic tuning also enables exploration of previously unachievable highly complicated higher order waveforms comprised of more than a hundred parameters. In this dissertation, three fixed waveform topologies of increasing complexity were applied to optimize waveforms using genetic algorithms (GA) for a single-nozzle inkjet based on computer vision feedback from in-flight drop monitoring. These GA experiments automatically found waveforms for water and ethyl acetate, wherein the latter is considered rheologically impossible to jet based on fluid mechanics studies in the literature, but which was jetted at drop volumes measuring 0.8 pL continuously for several hours without faults. The resulting ratio between the 11.5 µm drop diameter and the 50 µm inkjet nozzle aperture was an impressive 23%. Next, a novel optimization scheme of a GA with a variable-length or “free” topology was developed to optimize waveforms for a more complex multi-nozzle piezo-jet using top-down imaging of drops dispensed on a silicon wafer to measure performance. This free-topology GA enabled exploration of highly sophisticated controllers and resulted in waveforms with as many as 124 parameters that reduced drop volume by 22.8% to an estimated 336 fL as compared to the waveforms found by a fixed-topology GA with 13 parameters.
Quantum phase transitions in Bose-Fermi systems
Creators: name: Petrellis, D.
name: Leviatan, A.
name: Iachello, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum phase transitions in a system of N bosons with angular momentum L=0,2 (s,d) and a single fermion with angular momentum j are investigated both classically and quantum mechanically. It is shown that the presence of the odd fermion strongly influences the location and nature of the phase transition, especially the critical value of the control parameter at which the phase transition occurs. Experimental evidence for the U(5)-SU(3) (spherical to axially-deformed) transition in odd-even nuclei is presented.
description: 38 pages, 29 figures
Public Quantum Communication and Superactivation
Creators: name: Brandão, Fernando G. S. L.
name: Oppenheim, Jonathan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Is there a meaningful quantum counterpart to public communication? We argue that the symmetric-side channel -- which distributes quantum information symmetrically between the receiver and the environment -- is a good candidate for a notion of public quantum communication in entanglement distillation and quantum error correction. This connection is partially motivated by [Brandão and Oppenheim, arXiv:1004.3328], where it was found that if a sender would like to communicate a secret message to a receiver through an insecure quantum channel using a shared quantum state as a key, then the insecure quantum channel is only ever used to simulate a symmetric-side channel, and can always be replaced by it without altering the optimal rate. Here we further show, in complete analogy to the role of public classical communication, that assistance by a symmetric-side channel makes equal the distillable entanglement, the recently-introduced mutual independence, and a generalization of the latter, which quantifies the extent to which one of the parties can perform quantum privacy amplification. Symmetric-side channels, and the closely related erasure channel, have been recently harnessed to provide examples of superactivation of the quantum channel capacity. Our findings give new insight into this non-additivity of the channel capacity and its relation to quantum privacy. In particular, we show that single-copy superactivation protocols with the erasure channel, which encompasses all examples of non-additivity of the quantum capacity found to date, can be understood as a conversion of mutual independence into distillable entanglement.
description: 10 pages
Characteristics of Auditory Processing Disorders (de Wit et al., 2016)
Creators: name: de Wit, Ellen
name: Visser-Bochane, Margot I.
name: Steenbergen, Bert
name: van Dijk, Pim
name: P. van der Schans, Cees
name: Luinge, Margreet R.
Publisher: name: ASHA journals
Year: 2022
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology

description: Purpose: The purpose of this review article is to describe characteristics of auditory processing disorders (APD) by evaluating the literature in which children with suspected or diagnosed APD were compared with typically developing children and to determine whether APD must be regarded as a deficit specific to the auditory modality or as a multimodal deficit.Method: Six electronic databases were searched for peer-reviewed studies investigating children with (suspected) APD in comparison with typically developing peers. Relevant studies were independently reviewed and appraised by 2 reviewers. Methodological quality was quantified using the American Speech-Language-Hearing Association’s levels of evidence.Results: Fifty-three relevant studies were identified. Five studies were excluded because of weak internal validity. In total, 48 studies were included, of which only 1 was classified as having strong methodological quality. Significant dissimilarities were found between children referred with listening difficulties and controls. These differences relate to auditory and visual functioning, cognition, language, reading, and physiological and neuroimaging measures.Conclusions: Methodological quality of most of the incorporated studies was rated moderate due to the heterogeneous groups of participants, inadequate descriptions of participants, and the omission of valid and reliable measurements. The listening difficulties of children with APD may be a consequence of cognitive, language, and attention issues rather than bottom-up auditory processing.
The stratigraphic and structural setting of metamorphic continental units from Alpine Corsica: clues from the area between Asco and Golo valleys (Central Corsica, France)
Creators: name: Malasoma, A.
name: Morelli, G.
name: Di Rosa, M.
name: Marroni, M.
name: Pandeli, E.
name: Principi, G.
name: Pandolfi, L.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The area between the Asco and Golo valleys in Central Corsica, France (latitudes 42°47′95″N to 42°37′96″N, longitudes from 9°11′82″E to 9°20′72″E) is a key-sector to investigate the stratigraphic and tectonic setting of Alpine Corsica. This sector includes (from the structurally lowest to the highest) the Hercynian Corsica, that represents the European continental margin not deeply involved in the convergence processes, and a stack of oceanic and continental units belonging to the Alpine Corsica, i.e. the domain strongly affected by the Alpine deformation and metamorphism in the Late Cretaceous-Paleogene. The 1:15,000 scale geological map illustrates the tectonic features of Alpine Corsica stack with a special focus to the Lower Units, the units derived from the European thinned continental margin involved in the Alpine convergence.
Constraining the Outburst Properties of the SMBH in Fornax A through X-ray, Infrared, and Radio Observations
Creators: name: Lanz, Lauranne
name: Jones, Christine
name: Forman, William R.
name: Ashby, Matthew L. N.
name: Kraft, Ralph
name: Hickox, Ryan C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Combined Spitzer, Chandra, XMM-Newton, and VLA observations of the giant radio galaxy NGC 1316 (Fornax A) show a radio jet and X-ray cavities from AGN outbursts likely triggered by a merger with a late-type galaxy at least 0.4 Gyr ago. We detect a weak nucleus with an SED typical of a low-luminosity AGN with a bolometric luminosity of 2.4x10^42 erg/s. The Spitzer IRAC and MIPS images show dust emission strongest in regions with little or no radio emission. The large infrared luminosity relative to the galaxy's K-band luminosity implies an external origin for the dust. The dust mass implies that the merger spiral galaxy had a stellar mass of 1-6x10^10 M_sun and a gas mass of 2-4x10^9 M_sun. Chandra images show a small ~15"(1.6 kpc) cavity coincident with the radio jet, while the XMM-Newton image shows two large X-ray cavities lying 320"(34.8 kpc) east and west of the nucleus, each approximately 230"(25 kpc) in radius. The radio lobes lie at radii of 14.3'(93 kpc) and 15.6'(101 kcp), more distant from the nucleus than the detected X-ray cavities. The relative morphology of the large scale 1.4 GHz and X-ray emission suggests they were products of two distinct outbursts, an earlier one creating the radio lobes and a later one producing the X-ray cavities. Alternatively, if a single outburst created both the X-ray cavities and the radio lobes, this would require that the morphology is not fully defined by the 1.4 GHz emission. For the more likely two outburst scenario, we use the buoyancy rise times to estimate an age for the more recent outburst of 0.1 Gyr and use the associated PV work done by the expanding plasma to create the X-ray cavities to estimate the outburst's energy of 10^58 ergs. The present size and location of the large radio lobes implies that the AGN outburst that created them happened ~0.4 Gyr ago and released ~5x10^58 ergs. (abridged)
description: 12 emulateapj pages, 8 figures, 3 tables, accepted for publication in ApJ
D-PIL-3.13 TCO Study T-Systems
Creators: name: Jurry De La Mar
Publisher: name: Zenodo
Year: 2019
Subjects: TCO, cloud, PCP, commercial cloud

description: The document contains a summary of a detailed TCO study of selected scientific use cases of the Helix Nebula project and is released for public dissemination. The buyers group have selected relevant use cases and provided high-level input requirements and workflow information to perform a TCO study. Based on this, T-Systems have evaluated alternative approaches how the use cases can be supported most efficiently by commercial cloud services and derived the TCO per use case.

The document includes a description of the general approach taken and how this may be used for other use cases or TCO studies in future.
Analysis of classical motion on the Wannier ridge
Creators: name: Richter, Klaus
name: Wintgen, Dieter
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 530 Physik

description: The authors study the classical electronic motion of a two-electron atom on the Wannier ridge. Stability properties of certain periodic orbits are calculated. The analysis shows that the helium atom is not ergodic. Semiclassical implications of the classical analysis are discussed.
The Nature of Angular Momentum Transport in Radiative Self-Gravitating Protostellar Discs
Creators: name: Forgan, Duncan
name: Rice, Ken
name: Cossins, Peter
name: Lodato, Giuseppe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Semi-analytic models of self-gravitating discs often approximate the angular momentum transport generated by the gravitational instability using the phenomenology of viscosity. This allows the employment of the standard viscous evolution equations, and gives promising results. It is, however, still not clear when such an approximation is appropriate. This paper tests this approximation using high resolution 3D smoothed particle hydrodynamics (SPH) simulations of self-gravitating protostellar discs with radiative transfer. The nature of angular momentum transport associated with the gravitational instability is characterised as a function of both the stellar mass and the disc-to-star mass ratio. The effective viscosity is calculated from the Reynolds and gravitational stresses in the disc. This is then compared to what would be expected if the effective viscosity were determined by assuming local thermodynamic equilibrium or, equivalently, that the local dissipation rate matches the local cooling rate. In general, all the discs considered here settle into a self-regulated state where the heating generated by the gravitational instability is modulated by the local radiative cooling. It is found that low-mass discs can indeed be represented by a local "alpha-parametrisation", provided that the disc aspect ratio is small (H/R < 0.1) which is generally the case when the disc-to-star mass ratio q <0.5. However, this result does not extend to discs with masses approaching that of the central object. These are subject to transient burst events and global wave transport, and the effective viscosity is not well modelled by assuming local thermodynamic equilibrium. In spite of these effects, it is shown that massive (compact) discs can remain stable and not fragment, evolving rapidly to reduce their disc-to-star mass ratios through stellar accretion and radial spreading.
description: 13 pages, 44 figures, accepted for publication in MNRAS
Signal mapping for bit-interleaved coded modulation with iterative decoding
Creators: name: Mohammadnavazi, Hassan
Publisher: name: University of British Columbia
Year: 2018

description: Due to its convenience, wireless communication systems have grown tremendously. Data rate requirements of various services/applications that are transmitted over wireless channels are increasing day by day. Bit interleaved coded modulation (BICM), which is a serial concatenation of a channel encoder, an interleaver and a symbol mapper, is a spectral efficient technique that is being used in many wireless systems. The performance of BICM can be significantly improved by using the iterative decoding technique at the receiver. This system is referred as BICM with iterative decoding (BICM-ID), and offers an improved performance over both fading and nonfading channels. It is well-known that BICM-ID performance is strongly dependent on the applied signal mapping. Signal mapping is the assignment of binary bits to complex symbols from a modulation alphabet. It is demanded to use a higher order modulation in BICM-ID to achieve a higher data rate and spectral efficiency. However, finding a mapping for a large modulation that offers an improved performance for BICM-ID is very complicated. This is because of the huge number of possible mappings for higher order modulations. This thesis focuses on the mapping problem for BICM-ID systems. In particular, novel mapping methods are developed for higher order modulations, including two-dimensional and multi-dimensional modulations. The proposed methods in this thesis consist of (i) heuristic methods and (ii) computer search techniques. In comparison with the previously known mappings, the proposed mappings significantly improve the BICM-ID performance over the considered channels. This is confirmed by various analytical and simulation results that are investigated in this thesis.
Depositional setting of the southern arms of Lago Argentino (southern Patagonia)
Creators: name: Lozano, Jorge
name: Donda, Federica
name: Bran, Donald
name: Lodolo, Emanuele
name: Baradello, Luca
name: Romeo, Roberto
name: Vilas, Juan Francisco
name: Grossi, Maurizio
name: Tassone, Alejandro
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: Lago Argentino hosts a series of calving glaciers originating from the Southern Patagonian Icefield, the largest temperate ice cap of the southern hemisphere. Brazo Rico and Brazo Sur are two basins located in the southern part of Lago Argentino, where a series of high-resolution seismic profiles have allowed reconstruction of its depositional setting and sedimentary architecture, and to produce the following maps: top of the acoustic basement, top of the glacial sequence, and thickness of the glacio-lacustrine deposits. Data reveal the role of basement highs in the complex dynamic behavior of the two main glaciers, Perito Moreno and Frías glaciers, which fluctuated along Brazo Rico and Brazo Sur since the end of the Last Glacial Maximum. Their advances and retreats are testified by the presence of several moraine fronts buried beneath a generally undisturbed, glacio-lacustrine and lacustrine sequence, which records the depositional history of the southern arms of Lago Argentino.
Controlling the Colour of Metals: Intaglio and Bas-Relief Metamaterials
Creators: name: Zhang, Jianfa
name: Ou, Jun-Yu
name: Papasimakis, Nikitas
name: Chen, Yifang
name: MacDonald, Kevin F.
name: Zheludev, Nikolay I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The fabrication of indented ('intaglio') or raised ('bas-relief') sub-wavelength metamaterial patterns on a metal surface provides a mechanism for changing and controlling the colour of the metal without employing any form of chemical surface modification, thin-film coating or diffraction effects. We show that a broad range of colours can be achieved by varying the structural parameters of metamaterial designs to tune absorption resonances. This novel approach to the 'structural colouring' of pure metals offers great versatility and scalability for both aesthetic (e.g. jewellery design) and functional (e.g. sensors, optical modulators) applications. We focus here on visible colour but the concept can equally be applied to the engineering of metallic spectral response in other electromagnetic domains.
Coupling of replicate order-parameters in incommensurate multiferroics
Creators: name: Mettout, Bruno
name: Toledano, Pierre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The specific properties of incommensurate multiferroic phases resulting from the coupling of order-parameter replicates are worked out using the illustrative example of iron vanadate. The dephasing between the order-parameter copies induces an additional broken symmetry phase corresponding to the lowest symmetry of the system and varies critically at the transition to the multiferroic phase. It reflects the temperature dependence of the angle between paired spins in the antiferromagnetic spiral structure. Expressing the transition order-parameters in terms of spin-density waves allows showing that isotropic exchange interactions contribute to the stabilization of the ferroelectric phase.
Emergence of coherence in the Mott--superfluid quench of the Bose-Hubbard model
Creators: name: Navez, Patrick
name: Schützhold, Ralf
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the quench from the Mott to the superfluid phase in the Bose-Hubbard model and investigate the spatial-temporal growth of phase coherence, i.e., phase locking between initially uncorrelated sites. To this end, we establish a hierarchy of correlations via a controlled expansion into inverse powers of the coordination number $1/Z$. It turns out that the off-diagonal long-range order spreads with a constant propagation speed, forming local condensate patches, whereas the phase correlator follows a diffusion-like growth rate.
description: 4 pages
Pediatric Audiology Report (Donald & Kelly-Campbell, 2016)
Creators: name: Donald, Ashleigh J.
name: Kelly-Campbell, Rebecca J.
Publisher: name: ASHA journals
Year: 2022
Subjects: Health Care

description: Objective: The purpose of this study was twofold: first, to evaluate a typical pediatric diagnostic audiology report to establish its readability and comprehensibility for parents and, second, to revise the report to improve its readability, as well as the comprehension, sense of self-efficacy, and positive opinions of parent readers.Method: In Experiment 1, a mock audiology report was evaluated via a readability analysis and semistructured interviews with 5 parents. In Experiment 2, the report was revised using best practice guidelines and parental recommendations from Experiment 1. The revision was verified by randomly assigning 32 new parent participants to read either the revised or unrevised report before their comprehension, self-efficacy, and opinions were assessed. Results: In Experiment 1, results confirmed that the report was difficult to read and understand. In Experiment 2, parents who read the revised report had significantly greater comprehension, self-efficacy, and opinion ratings than those who read the unrevised report. In addition, the readability of the revised report was markedly improved compared with the unrevised report.Conclusions: This study shows that pediatric diagnostic audiology reports can be revised to adhere to best practice guidelines and yield improved readability, in addition to improving the comprehension, sense of self-efficacy, and positive opinions of parents of children with hearing impairment.
Exploration of 2-aminophenol and 1,2-phenylenediamine ligands in hypervalent phosphorus(V) chemistry
Creators: name: Zhan, Chuantian
Publisher: name: University of British Columbia
Year: 2019

description: Phosphoranes P(OC₆H₄NR)₂(OC₆H₄NHR) [R = Me (2.2a), Ph (2.2b), C6F5 (2.2c)] were synthesized by treating PCl5 with the respective 2–aminophenol derivative (2.1a–c, 3.1 equiv). In one instance, an intermediate species, P(OC₆H₄NR)₂Cl [R = Me (2.3a)], was isolated and structurally characterized. Deprotonation of the amine moieties (–NHR) in phosphoranes 2.2a and 2.2b with a strong alkali–metal base (e.g. n–BuLi) in the presence of a strong–donor solvent (e.g. THF) afforded salts composed of the hexacoordinate P(V)–anions [P(OC₆H₄NR)₃]– (R = Me, [2.4a]– ; Ph, [2.4b]–). Employing precursor 2.2a, the salt Li(THF)₃fac–[2.4a] was isolated. The X–ray crystal of each enantiomer was determined and, to our knowledge, represents the first structurally characterized example of a salt containing a hexacoordinate P(V)N₃O₃ anion featuring P(V)–N bonds. Efforts have also been made to synthesize analogous hypervalent P(V)–derivatives with 1,2–phenylenediamine ligands. Following the synthetic methodology to prepare phosphoranes 2.2a, 2.2b and 2.2c, preliminary investigations with three symmetrical 1,2–phenylenediamine derivatives (3.1a–c) were conducted. No evidence for the formation of five– or six–coordinate product was observed. Instead, an interesting phosphonium cation featuring a four–coordinate phosphorus(V) moiety was isolated as a chloride salt, P(OC₆H₄NR)₂Cl [R = Me (3.2b)], which was characterized spectroscopically.
Strain splitting of nitrogen acceptor levels in ZnSe
Creators: name: Mayer, H.
name: Rössler, Ulrich
name: Wolf, K.
name: Elstner, A.
name: Stanzl, H.
name: Reisinger, T.
name: Gebhardt, Wolfgang
Publisher: name: Universität Regensburg
Year: 1995
Subjects: subject: 530 Physik

description: We report on the experimental and theoretical study of the strain splitting of nitrogen acceptor levels in epitaxially grown ZnSe on GaAs substrate. The crystal strain is due to the different lattice constants and thermal expansion coefficients and is determined by x-ray diffractometry. The binding energies of the acceptor ground and excited states have been determined by temperature-dependent and resonant photoluminescence measurements involving two-hole transitions for three differently strained levels. A consistent theoretical description of the experimental data is given in terms of the model of Baldereschi and Lipari, augmented by the Bir-Pikus Hamiltonian to account for the strain splitting of the valence-band edge. An empirical ansatz for the central-cell correction is used in order to reproduce the chemical shift of the nitrogen acceptor.
FIR response of quantum dots: filling factor dependence at high magnetic fields
Creators: name: Darnhofer, T.
name: Suhrke, Michael
name: Rössler, Ulrich
Publisher: name: Universität Regensburg
Year: 1996
Subjects: subject: 530 Physik

description: In recent experiments by Bollweg et al. (Phys. Rev. Lett., (1996) 2774) a novel feature was observed in the far-infrared absorption spectra of quantum dots: the resonance frequency of the low-lying $\omega$$_{-}$ mode exhibits small oscillations in dependence on the magnetic field. By calculating the self-consistent far-infrared response of electrons in quantum dots, we can give an explanation for this behavior. For high magnetic fields, the occupation of electron states in the quantum dot can be related to a filling factor defined for the density in the center of the dot. We trace back the oscillations in the $\omega$$_{-}$ mode to an oscillatory filling factor dependence of the radial extension of the electron density.
Exciton transfer in asymmetric double quantum wells: the one-LO phonon process
Creators: name: Michl, F. C.
name: Winkler, R.
name: Rössler, Ulrich
Publisher: name: Universität Regensburg
Year: 1996
Subjects: subject: A. semiconductors; A. quantum wells; D. tunnelling
subject: 530 Physik

description: We propose a novel mechanism for the transfer of excitons as an entity through barriers in quantum well structures, namely by the emission of a single longitudinal optical (LO) phonon. The process arises from a combination of the Fröhlich coupling of electrons and holes to the LO phonons and the admixture of different subband states to the wave function of the excitons due to the Coulomb interaction. For the case of an asymmetric double quantum well, a numerical calculation of the resulting relaxation rates is given. We show that the process can dominate over the separate transfer of electrons and holes.