cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 2 of Prevalence of G6PD deficiency and diagnostic accuracy of a G6PD point-of-care test among a population at risk of malaria in Myanmar
Creators: name: Aung, Than Htike
name: Suansomjit, Chayanut
name: Tun, Zaw Min
name: Hlaing, Tin Maung
name: Kaewkungwal, Jaranit
name: Cui, Liwang
name: Sattabongkot, Jetsumon
name: Roobsoong, Wanlapa
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Computational Biology

description: Additional file 2: Table S2. Primersset for amplification of different exons of G6PD encoding gene.
Near-infrared spectroscopy of EX Lupi in outburst
Creators: name: Kóspál, Á.
name: Ábrahám, P.
name: Goto, M.
name: Regály, Zs.
name: Dullemond, C. P.
name: Henning, Th.
name: Juhász, A.
name: Sicilia-Aguilar, A.
name: Ancker, M. van den
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: EX Lup is the prototype of the EXor class of young eruptive stars: objects showing repetitive brightenings due to increased accretion from the circumstellar disk to the star. In this paper, we report on medium-resolution near-infrared spectroscopy of EX\,Lup taken during its extreme outburst in 2008, as well as numerical modeling with the aim of determining the physical conditions around the star. We detect emission lines from atomic hydrogen, helium, and metals, as well as first overtone bandhead emission from carbon monoxide. Our results indicate that the emission lines are originating from gas located in a dust-free region within ~ 0.2 AU of the star. The profile of the CO bandhead indicates that the CO gas has a temperature of 2500 K, and is located in the inner edge of the disk or in the outer parts of funnel flows. The atomic metals are probably co-located with the CO. Some metallic lines are fluorescently excited, suggesting direct exposure to ultraviolet photons. The Brackett series indicates emission from hot (10000 K) and optically thin gas. The hydrogen lines display a strong spectro-astrometric signal, suggesting that the hydrogen emission is probably not coming from an equatorial boundary layer; a funnel flow or disk wind origin is more likely. This picture is broadly consistent with the standard magnetospheric accretion model usually assumed for normally accreting T Tauri stars. Our results also set constraints on the eruption mechanism, supporting a model where material piles up around the corotation radius and episodically falls onto the star.
description: 12 pages, 8 figures, 1 table, accepted for publication in ApJ
Laelaps schatzi Lareschi & Savchenko 2021, sp. nov.
Creators: name: Lareschi, Marcela
name: Savchenko, Ekaterina
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Laelapidae
Laelaps
Laelaps schatzi

description: Laelaps schatzi sp. nov.
 Laelaps schatzi Savchenko & Lareschi, 2019: 105146, Figs 2–3 (unavailable name).
 Laelaps schatzi was described on the basis of the female. The species is unique in having short genitoventral setae (≤114 μm), reticulated surface pattern on the genital shield from the level of Zv1 to the posterior margin, and by the presence of one or two additional unpaired setae between J4 on the dorsal shield. See Savchenko & Lareschi (2019) for the full description.
 Type material. HOLOTYPE: female (MLP-CNP6316 /M7) ex Oligoryzomys flavescens, Pereyra, Partido de Berazategui, Buenos Aires, Argentina (34°50′13.84″S, 58°5′23.40″W). PARATYPES: 14 females ex Oligoryzomys flavescens, Pereyra, Partido de Berazategui, Buenos Aires, Argentina (34°50′13.84″S, 58°5′23.40″W) (MLP-CNP6314 / M1-M5, MLP-CNP6315 /M6, MLP-CNP6316 /M8, MLP-CNP6318 /M09-10, MLP-CNP6311 /M11-12, MLP-CNP6312 / M12-13, MLP-CNP6313 /M14, MLP-CNP6317 /M15).
 Etymology. The new species was named in honour of Heinrich Schatz (Innsbruck, Austria) renowned soil ecologist and acarologist who advised E. Savchenko during her bachelor studies and stayed as a true friend over the years.
 Type host. Oligoryzomys flavescens Waterhouse (Cricetidae: Sigmodontinae) (CNP 6316, housed at the Anexos de la Colección de Mamíferos del Centro Nacional Patagónico (CNP), Puerto Madryn, Chubut, Argentina).
 Type locality. Pereyra, Partido de Berazategui, Buenos Aires, Argentina (34°50′13.84″S, 58°5′23.40″W).
description: Published as part of Lareschi, Marcela & Savchenko, Ekaterina, 2021, Validation of the names of four species of laelapid mites (Mesostigmata: Laelapidae) parasitic on sigmodontine rodents (Rodentia: Cricetidae), pp. 298-300 in Zootaxa 5072 (3) on page 298, DOI: 10.11646/zootaxa.5072.3.7, http://zenodo.org/record/5744764
Influence of classical resonances on chaotic tunneling
Creators: name: Mouchet, Amaury
name: Eltschka, Christopher
name: Schlagheck, Peter
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: Dynamical tunneling between symmetry-related stable modes is studied in the periodically driven pendulum. We present strong evidence that the tunneling process is governed by nonlinear resonances that manifest within the regular phase-space islands on which the stable modes are localized. By means of a quantitative numerical study of the corresponding Floquet problem, we identify the trace of such resonances not only in the level splittings between near-degenerate quantum states, where they lead to prominent plateau structures, but also in overlap matrix elements of the Floquet eigenstates, which reveal characteristic sequences of avoided crossings in the Floquet spectrum. The semiclassical theory of resonance-assisted tunneling yields good overall agreement with the quantum-tunneling rates, and indicates that partial barriers within the chaos might play a prominent role.
Quaternionic Formulation of the Dirac Equation
Creators: name: Colladay, Don
name: McDonald, Patrick
name: Mullins, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Dirac equation with Lorentz violation involves additional coefficients and yields a fourth-order polynomial that must be solved to yield the dispersion relation. The conventional method of taking the determinant of $4\times 4$ matrices of complex numbers often yields unwieldy dispersion relations. By using quaternions, the Dirac equation may be reduced to $2 \times 2$ form in which the structure of the dispersion relations become more transparent. In particular, it is found that there are two subsets of Lorentz-violating parameter sets for which the dispersion relation is easily solvable. Each subset contains half of the parameter space so that all parameters are included.
description: Presented at the Fifth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 28-July 2, 2010
Overlap Dirac operator at nonzero chemical potential and random matrix theory
Creators: name: Bloch, Jacques
name: Wettig, Tilo
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We$^{ }$show how to introduce a quark chemical potential in the$^{ }$overlap Dirac operator. The resulting operator satisfies a Ginsparg-Wilson relation$^{ }$and has exact zero modes. It is no longer $\gamma$$_{5}$$^{ }$Hermitian, but its nonreal eigenvalues still occur in pairs. We$^{ }$compute the spectral density of the operator on the lattice$^{ }$and show that, for small eigenvalues, the data agree with$^{ }$analytical predictions of non-Hermitian chiral random matrix theory for both$^{ }$trivial and nontrivial topology. We also explain an observed change$^{ }$in the number of zero modes as a function of$^{ }$chemical potential.
Harmonization of SNP identifiers
Creators: name: Tripathi, Chhavi
Publisher: name: University of British Columbia
Year: 2018

description: While data generation has been, and will remain crucial to making scientific discoveries, our ability to analyze data has not been at par with data generation. Therefore, it is important to direct our efforts towards making sense of the data already produced. In this thesis, the harmonization of single nucleotide polymorphism (SNP) identifiers is investigated. Harmonization of SNP identifiers means having the same identifier for a SNP every time it occurs. Harmonizing SNP identifiers would allow the genetic data from different datasets to become comparable, which would allow re-purposing of existing datasets in public repositories. Genetic data helps in associating genetic alterations with disease and health. Genetic data is being generated at a rate faster than Moore’s law. With the intention of making generated data available to all researchers in the world, public repositories like the UK Biobank, European Genome-phenome archive (EGA), and database of Genotypes and Phenotypes (dbGaP) have been set up to host public data and disseminate it according to protocols established. The data in these repositories is from different time points, is generated using different genotyping arrays, and is submitted by researchers all over the world. This leads to a large degree of heterogeneity in the data. In order to make the most of the data, they need to be harmonized. The greater the overlap between two datasets, the easier it is to harmonize them. Thus, in order to assess the extent to which datasets can be harmonized, it is important to perform an overlap between them. SNPs are of most interest in genetic datasets. Because of the numerous kinds of identifiers a SNP may have, determining the number and identity of overlapping SNPs between datasets is challenging and increases in complexity with the number of comparisons (SNPs and datasets). There is no tool available to perform on-the-fly harmonization of SNP identifiers. The SNP Overlap Tool (SPOT) was designed to harmonize SNP identifiers using the SNP chromosomal locations, and subsequently calculate the overlap of SNPs between two datasets. It is a web-based tool, coded in Java programming language.
The interplay between dopants and oxygen vacancies in the magnetism of V-doped TiO2
Creators: name: Grau-Crespo, Ricardo
name: Schwingenschlögl, Udo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Density functional theory calculations indicate that the incorporation of V into Ti lattice positions of rutile TiO2 leads to magnetic V4+ species, but the extension and sign of the coupling between dopant moments confirm that ferromagnetic order cannot be reached via low-concentration doping in the non-defective oxide. Oxygen vacancies can introduce additional magnetic centres, and we show here that one of the effects of vanadium doping is to reduce the formation energies of these defects. In the presence of both V dopants and O vacancies all the spins tend to align with the same orientation. We conclude that V doping favours the ferromagnetic behaviour of TiO2 not only by introducing spins associated with the dopant centres but also by increasing the concentration of oxygen vacancies with respect to the pure oxide.
description: 11 pages, including 1 table and 3 figures. To appear in the Journal of Physics Condensed Matter (special issue on Semiconducting Oxides)
title: Bioprinting Cell- and Spheroid-Laden Protein-Engineered Hydrogels as Tissue-on-Chip Platforms
Creators: name: Duarte Campos, Daniela F.
name: Lindsay, Christopher D.
name: Roth, Julien G.
name: LeSavage, Bauer L.
name: Seymour, Alexis J.
name: Krajina, Brad A.
name: Ribeiro, Ricardo
name: Costa, Pedro F.
name: Blaeser, Andreas
name: Heilshorn, Sarah C.
Publisher: name: Frontiers Media S.A.
Year: 2023

description: Human tissues, both in health and disease, are exquisitely organized into complex three-dimensional architectures that inform tissue function. In biomedical research, specifically in drug discovery and personalized medicine, novel human-based three-dimensional (3D) models are needed to provide information with higher predictive value compared to state-of-the-art two-dimensional (2D) preclinical models. However, current in vitro models remain inadequate to recapitulate the complex and heterogenous architectures that underlie biology. Therefore, it would be beneficial to develop novel models that could capture both the 3D heterogeneity of tissue (e.g., through 3D bioprinting) and integrate vascularization that is necessary for tissue viability (e.g., through culture in tissue-on-chips). In this proof-of-concept study, we use elastin-like protein (ELP) engineered hydrogels as bioinks for constructing such tissue models, which can be directly dispensed onto endothelialized on-chip platforms. We show that this bioprinting process is compatible with both single cell suspensions of neural progenitor cells (NPCs) and spheroid aggregates of breast cancer cells. After bioprinting, both cell types remain viable in incubation for up to 14 days. These results demonstrate a first step toward combining ELP engineered hydrogels with 3D bioprinting technologies and on-chip platforms comprising vascular-like channels for establishing functional tissue models.
Photon Self-Induced Spin to Orbital Conversion in TGG crystal at high laser power
Creators: name: Mosca, S.
name: Canuel, B.
name: Karimi, E.
name: Piccirillo, B.
name: Marrucci, L.
name: De Rosa, R.
name: Genin, E.
name: Milano, L.
name: Santamato, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper, we present experimental evidence of a newly discovered third-order nonlinear optical process Self-Induced Spin-to-Orbital Conversion (SISTOC) of the photon angular momentum. This effect is the physical mechanism at the origin of the depolarization of very intense laser beams propagating in isotropic materials. The SISTOC process, like self-focusing, is triggered by laser heating leading to a radial temperature gradient in the medium. In this work we tested the occurrence of SISTOC in a terbium gallium garnet (TGG) rod for an impinging laser power of about 100~W. To study the SISTOC process we used different techniques: polarization analysis, interferometry and tomography of the photon orbital angular momentum. Our results confirm, in particular, that the apparent depolarization of the beam is due to the occurrence of maximal entanglement between the spin and orbital angular momentum of the photons undergoing the SISTOC process. This explanation of the true nature of the depolarization mechanism could be of some help in finding novel methods to reduce or to compensate for this usually unwanted depolarization effect in all cases where very high laser power and good beam quality are required.
description: 6 pages, 10 figures, submitted
Characterizing cortical-cerebellar neurophysiology during visuomotor adaptation in chronic middle cerebral artery stroke
Creators: name: Feldman, Samantha Jean
Publisher: name: University of British Columbia
Year: 2018

description: The acquisition of complex motor skills shapes our behavior and ability to adapt in everyday life. The underlying biological processes are complex, involving multiple neuroanatomic pathways and efficient communication within functional brain networks. Understanding the neural underpinnings of motor learning and adaptation within the context of health and disease is fundamental, and particularly relevant to brain injury, recovery, and rehabilitation. Following middle cerebral artery (MCA) stroke, individuals often experience upper limb motor impairment that continues into the chronic phase. Motor recovery is influenced by the reorganization of brain networks compensating for tissue damage and by well-designed motor rehabilitation programs that promote use of the remaining motor output. However, predicting the outcome of rehabilitation has been difficult and recovery is often incomplete. Impairments in cortical-cerebellar pathways may underlie motor deficits and influence motor function, yet, to date, little work has examined the influence of cortical-cerebellar relationships in relation to motor adaptation in chronic MCA stroke. The overall objective of the present thesis was to investigate the impact of MCA stroke on cortical-cerebellar neurophysiology and motor adaptation using transcranial magnetic stimulation (TMS). TMS was employed to investigate cortical-cerebellar excitability at baseline, and then during a sensorimotor adaptation task in a group of chronic MCA stroke and a group healthy older controls. Both groups had similar cortical-cerebellar excitability before and during the adaptation task. However, individuals with MCA stroke are impaired compared to healthy age matched controls in sensorimotor adaptation. This suggests that adaptation deficits after MCA stroke may be influenced by motor network substrates beyond the cerebellum. The present thesis contributes new knowledge towards understanding the impact of chronic MCA stroke on cortical-cerebellar pathways and sensorimotor adaptation. The finding of sufficient cortical-cerebellar connectivity suggests that it may be a candidate pathway for TMS stimulation to modulate motor related networks for stroke rehabilitation.
A Lightweight and Attack Resistant Authenticated Routing Protocol for Mobile Adhoc Networks
Creators: name: Babu, M. Rajesh
name: Selvan, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In mobile ad hoc networks, by attacking the corresponding routing protocol, an attacker can easily disturb the operations of the network. For ad hoc networks, till now many secured routing protocols have been proposed which contains some disadvantages. Therefore security in ad hoc networks is a controversial area till now. In this paper, we proposed a Lightweight and Attack Resistant Authenticated Routing Protocol (LARARP) for mobile ad hoc networks. For the route discovery attacks in MANET routing protocols, our protocol gives an effective security. It supports the node to drop the invalid packets earlier by detecting the malicious nodes quickly by verifying the digital signatures of all the intermediate nodes. It punishes the misbehaving nodes by decrementing a credit counter and rewards the well behaving nodes by incrementing the credit counter. Thus it prevents uncompromised nodes from attacking the routes with malicious or compromised nodes. It is also used to prevent the denial-of-service (DoS) attacks. The efficiency and effectiveness of LARARP are verified through the detailed simulation studies.
description: 14 Pages, IJWMN
Additional file 1 of Exploring healthcare staff narratives to gain an in-depth understanding of changing multidisciplinary team power dynamics during the COVID-19 pandemic
Creators: name: Rogers, Lisa
name: De Brún, Aoife
name: McAuliffe, Eilish
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Supplementary Material 1
Numerical study of anharmonic vibrational decay in amorphous and paracrystalline silicon
Creators: name: Fabian, Jaroslav
name: Feldman, Joseph L.
name: Hellberg, C. Stephen
name: Nakhmanson, S. M.
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 530 Physik

description: The anharmonic decay rates of atomic vibrations in amorphous silicon (a-Si) and paracrystalline silicon (p-Si), containing small crystalline grains embedded in a disordered matrix, are calculated using realistic structural models. The models are 1000-atom four-coordinated networks relaxed to a local minimum of the Stillinger-Weber interatomic potential. The vibrational decay rates are calculated numerically by perturbation theory, taking into account cubic anharmonicity as the perturbation. The vibrational lifetimes for a-Si are found to be on picosecond time scales, in agreement with the previous perturbative and classical molecular dynamics calculations on a 216-atom model. The calculated decay rates for p-Si are similar to those of a-Si. No modes in p-Si reside entirely on the crystalline cluster, decoupled from the amorphous matrix. The localized modes with the largest (up to 59%) weight on the cluster decay primarily to two diffusons. The numerical results are discussed in relation to a recent suggestion by van der Voort et al. [Phys. Rev. B 62, 8072 (2000)] that long vibrational relaxation inferred experimentally may be due to possible crystalline nanostructures in some types of a-Si.
Plasma Wakefield Acceleration with a Modulated Proton Bunch
Creators: name: Caldwell, Allen
name: Lotov, Konstantin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The plasma wakefield amplitudes which could be achieved via the modulation of a long proton bunch are investigated. We find that in the limit of long bunches compared to the plasma wavelength, the strength of the accelerating fields is directly proportional to the number of particles in the drive bunch and inversely proportional to the square of the transverse bunch size. The scaling laws were tested and verified in detailed simulations using parameters of existing proton accelerators, and large electric fields were achieved, reaching 1 GV/m for LHC bunches. Energy gains for test electrons beyond 6 TeV were found in this case.
description: 9 pages, 7 figures
Mean-field limit for the stochastic Vicsek model
Creators: name: Bolley, François
name: Cañizo, José A.
name: Carrillo, José A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the continuous version of the Vicsek model with noise, proposed as a model for collective behavior of individuals with a fixed speed. We rigorously derive the kinetic mean-field partial differential equation satisfied when the number N of particles tends to infinity, quantifying the convergence of the law of one particle to the solution of the PDE. For this we adapt a classical coupling argument to the present case in which both the particle system and the PDE are defined on a surface rather than on the whole space. As part of the study we give existence and uniqueness results for both the particle system and the PDE.
Additional file 2 of Exploring healthcare staff narratives to gain an in-depth understanding of changing multidisciplinary team power dynamics during the COVID-19 pandemic
Creators: name: Rogers, Lisa
name: De Brún, Aoife
name: McAuliffe, Eilish
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Supplementary Material 2
Proposal for a spin-polarized solar battery
Creators: name: Zutic, Igor
name: Fabian, Jaroslav
name: Sarma, S. Das
Publisher: name: Universität Regensburg
Year: 2001
Subjects: subject: 530 Physik

description: A solar cell illuminated by circularly polarized light generates charge and spin currents. We show that the spin polarization of the current significantly exceeds the spin polarization of the carrier density for the majority carriers. Based on this principle, we propose a semiconductor spin-polarized solar battery and substantiate our proposal using analytical arguments and numerical modeling.
Eigengestures for natural human computer interface
Creators: name: Gawron, Piotr
name: Głomb, Przemysław
name: Miszczak, Jarosław Adam
name: Puchała, Zbigniew
Publisher: name: arXiv
Year: 2011
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We present the application of Principal Component Analysis for data acquired during the design of a natural gesture interface. We investigate the concept of an eigengesture for motion capture hand gesture data and present the visualisation of principal components obtained in the course of conducted experiments. We also show the influence of dimensionality reduction on reconstructed gesture data quality.
description: 10 pages, 3 figures
Phonon-Induced Spin Relaxation of Conduction Electrons in Aluminum
Creators: name: Fabian, Jaroslav
name: Sarma, S. Das
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 530 Physik

description: Spin-flip Eliashberg function α2SF and temperature-dependent spin relaxation time T1(T) are calculated for aluminum using realistic pseudopotentials. The spin-flip electron-phonon coupling constant λS is found to be 2.5×10−5. The calculations agree with experiments validating the Elliott-Yafet theory and the spin-hot-spot picture of spin relaxation for polyvalent metals.
A Wireless Sensor Network Air Pollution Monitoring System
Creators: name: Khedo, Kavi K.
name: Perseedoss, Rajiv
name: Mungur, Avinash
name: Mauritius, University of
name: Mauritius
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Sensor networks are currently an active research area mainly due to the potential of their applications. In this paper we investigate the use of Wireless Sensor Networks (WSN) for air pollution monitoring in Mauritius. With the fast growing industrial activities on the island, the problem of air pollution is becoming a major concern for the health of the population. We proposed an innovative system named Wireless Sensor Network Air Pollution Monitoring System (WAPMS) to monitor air pollution in Mauritius through the use of wireless sensors deployed in huge numbers around the island. The proposed system makes use of an Air Quality Index (AQI) which is presently not available in Mauritius. In order to improve the efficiency of WAPMS, we have designed and implemented a new data aggregation algorithm named Recursive Converging Quartiles (RCQ). The algorithm is used to merge data to eliminate duplicates, filter out invalid readings and summarise them into a simpler form which significantly reduce the amount of data to be transmitted to the sink and thus saving energy. For better power management we used a hierarchical routing protocol in WAPMS and caused the motes to sleep during idle time.
description: 15 Pages, IJWMN
Quark matter conductivity in strong magnetic background
Creators: name: Kerbikov, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Applying the ideas and methods of condensed matter physics we calculate the quantum conductivity of quark matter in magnetic field. In strong field quantum conductivity is proportional to the square root of the field.
description: 4 pages, Talk at the International Conference CPOD 2010
Spin-Polarized Transport in Inhomogeneous Magnetic Semiconductors: Theory of Magnetic/Nonmagnetic p-n Junctions
Creators: name: Zutic, Igor
name: Fabian, Jaroslav
name: Sarma, S. Das
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: 530 Physik

description: A theory of spin-polarized transport in inhomogeneous magnetic semiconductors is developed and applied to magnetic/nonmagnetic p-n junctions. Several phenomena with possible spintronic applications are predicted, including spin-voltaic effect, spin valve effect, exponential and giant magnetoresistance. It is demonstrated that only nonequilibrium spin can be injected across the space-charge region of a p-n junction, so that there is no spin injection (or extraction) at low bias.
title: Acceptance and Commitment Therapy (ACT) Informed Coaching: Examining Outcomes and Mechanisms of Change
Creators: name: Skews, Rachel
Publisher: name: Goldsmiths, University of London
Year: 2018

description: This thesis presents a programme of research designed to examine the impact of Acceptance and Commitment Therapy (ACT) informed performance and development coaching. A preliminary repeated measures study tested the impact of a brief ACT-informed coaching intervention on coachee general mental health, generalised self-efficacy, life satisfaction, intrinsic motivation, goal-directed thinking, goal attainment, and psychological flexibility with 53 UK adults. Data were collected at four time points over 5 weeks. Analyses revealed significant increases in general mental health, life satisfaction, goal-directed thinking, and goal attainment.
 
A randomised controlled trial (RCT) study tested the impact of a more substantial ACT-informed coaching intervention on coachee work performance, general mental health, generalised self-efficacy, job satisfaction, job motivation, goal-directed thinking, goal attainment, and psychological flexibility with 126 senior managers in the UK Civil Service. Participants were randomly allocated to either an ACT-informed coaching intervention (n = 65) or a waitlist control condition (n = 61). Data were collected at four time points over 13 weeks. Analyses showed significant increases in general mental health, generalised self-efficacy, goal-directed thinking, goal attainment, and psychological flexibility in the ACT group compared to the control condition. Consistent with ACT theory, analyses indicated that increases in psychological flexibility mediated improvements in general mental health, generalised self-efficacy, goal-directed thinking, and goal attainment.
 
A final parallel mediation study compared the effects of psychological flexibility and working alliance (a plausible alternative mediator) using data from the coaching arm of the RCT study. These analyses revealed that significant increases in psychological flexibility mediated increases in generalised self-efficacy, goal-directed thinking, and goal attainment. Despite significant increases in working alliance over time, no mediation effects for increases in study variables were found.  Overall, findings suggest that ACT-informed coaching is an effective approach to performance and development coaching, and psychological flexibility mediates the beneficial impact of the ACT coaching intervention.
The Bargmann-Wigner Formalism for Higher Spins (up to 2)
Creators: name: Dvoeglazov, Valeriy V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: On the basis of our recent modifications of the Dirac formalism we generalize the Bargmann-Wigner formalism for higher spins to be compatible with other formalisms for bosons. Relations with dual electrodynamics, with the Ogievetskii-Polubarinov notoph and the Weinberg 2(2S+1) theory are found. Next, we proceed to derive the equations for the symmetric tensor of the second rank on the basis of the Bargmann-Wigner formalism in a straightforward way. The symmetric multispinor of the fourth rank is used. It is constructed out of the Dirac 4-spinors. Due to serious problems with the interpretation of the results obtained on using the standard procedure we generalize it and obtain the spin-2 relativistic equations, which are consistent with the previous one. We introduce the dual analogues of the Riemann tensor and derive corresponding dynamical equations in the Minkowski space. Relations with the Marques-Spehler chiral gravity theory are discussed. The importance of the 4-vector field (and its gauge part) is pointed out.
description: 36 pages. No figures. Invited lecture at the V Mathematical Physics School, Belgrade, Serbia, 6-17 July, 2008. Sectional Plenary Talk at the LIII Congreso Nacional de F\'isica, Veracruz, M\'exico, Oct. 25-29, 2010. To be presented at the II Mini-Taller de Fisica-Matematica, Zacatecas, Dec. 9-11, 2010
Additional file 1 of Achieving reductions in the unmet need for contraception with postpartum family planning counselling in Ethiopia, 2019–2020: a national longitudinal study
Creators: name: Mruts, Kalayu Brhane
name: Tessema, Gizachew A
name: Kassaw, Nigussie Assefa
name: Gebremedhin, Amanuel Tesfay
name: Scott, Jane A
name: Pereira, Gavin
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: Supplementary Material 1
Theory of Sound Attenuation in Glasses: The Role of Thermal Vibrations
Creators: name: Fabian, Jaroslav
name: Allen, Philip B.
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 530 Physik

description: Sound attenuation and internal friction coefficients are calculated for a realistic model of amorphous silicon. It is found that, contrary to previous views, thermal vibrations can induce sound attenuation at ultrasonic and hypersonic frequencies that is of the same order or even larger than in crystals. The reason is the internal strain induced anomalously large Grüneisen parameters of the low-frequency resonant modes.
Scaling limits for the uniform infinite quadrangulation
Creators: name: Gall, Jean-François Le
name: Ménard, Laurent
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The uniform infinite planar quadrangulation is an infinite random graph embedded in the plane, which is the local limit of uniformly distributed finite quadrangulations with a fixed number of faces. We study asymptotic properties of this random graph. In particular, we investigate scaling limits of the profile of distances from the distinguished point called the root, and we get asymptotics for the volume of large balls. As a key technical tool, we first describe the scaling limit of the contour functions of the uniform infinite well-labeled tree, in terms of a pair of eternal conditioned Brownian snakes. Scaling limits for the uniform infinite quadrangulation can then be derived thanks to an extended version of Schaeffer's bijection between well-labeled trees and rooted quadrangulations.
description: 36 pages
Additional file 1 of Chikungunya seroprevalence in population-based studies: a systematic review and meta-analysis
Creators: name: Skalinski, Lacita Menezes
name: Santos, Aline Elena Sacramento
name: Paixão, Enny
name: Itaparica, Martha
name: Barreto, Florisneide
name: da Conceição Nascimento Costa, Maria
name: Teixeira, Maria Glória
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Supplementary Material 1
Search for the Theta^+(1540) in lattice QCD
Creators: name: Hagen, Christian
name: Hierl, Dieter
name: Schäfer, Andreas
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark sources to improve the signal and get reliable results even for small quark masses. The results of our quenched calculations, which have been done on a 12^3 x 24 lattice with a lattice spacing of a = 0.148 fm, do not provide any evidence for the existence of a Theta^+ with positive parity. We do observe, however, a signal compatible with nucleon-kaon scattering state. For the negative parity the results are inconclusive, due to the potential mixture with nucleon-kaon and N*-kaon scattering states.
Magnetotransport measurements on overgrown cleaved edge heterostructures in Hall bar geometry
Creators: name: Lermer, Markus
name: Reinwald, Elisabeth
name: Wegscheider, Werner
name: Weiss, Dieter
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Ga[Al]As; Cleaved edge overgrowth; Two-dimensional electron system; Superlattice
subject: 530 Physik

description: Abstract We present new methods to pattern and characterize the overgrown cleaved egde (CE) of GaAs/AlGaAs heterostructures. Four point measurements, which allow a direct measurement of the magnetotransport coefficients rxx and rxy of a two- dimensional electron system on the CE, have been out of reach so far. By means of novel preparation techniques a contacted Hall bar structure can be created on the edge of the cleavage plane. The potential of the new method is first tested on a system which is density modulated in a direction parallel to the current flow due to an underlying GaAs/AlGaAs superlattice. To create a two- dimensional electric modulation we managed to pattern the active area of the Hall bar with periodically arranged lines in the direction perpendicular to the MBE-grown superlattice. The resulting unit cells are reflected in magnetoresistance oscillations associated with the most prominent one-dimensional Fermi contours along x- and y-direction.
Additional file 2 of Chikungunya seroprevalence in population-based studies: a systematic review and meta-analysis
Creators: name: Skalinski, Lacita Menezes
name: Santos, Aline Elena Sacramento
name: Paixão, Enny
name: Itaparica, Martha
name: Barreto, Florisneide
name: da Conceição Nascimento Costa, Maria
name: Teixeira, Maria Glória
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Supplementary Material 2
Study of the inactivation of microorganisms using UV-LEDs
Creators: name: Kheyrandish, Ataollah
Publisher: name: University of British Columbia
Year: 2019

description: Application of ultraviolet (UV) radiation for water treatment has been increasing steadily in the past two decades. Further, significant improvements in semiconductor technology have made ultraviolet light emitting diodes (UV-LEDs) a viable alternative to conventional UV sources for water treatment. However, utilizing UV-LEDs for water disinfection comes with challenges related to their radiation measurements due to their specific structure, operation, and radiation pattern. Without a standardized measurement method, the efficacy of this new radiation source on the inactivation of waterborne microorganisms could not be determined accurately. In this study, in order to determine the fluence delivered to a microorganism’s solution, first, a method was developed to properly operate, control, and measure the output of the UV-LEDs. It was found that, not only the operational conditions affect the UV-LEDs output, but also the measurement techniques were critical in obtaining accurate results. Then, the radiation distribution was simulated. The radiation model was validated by two common measurement techniques, chemical actinometry and radiometry. Using the validated model, common radiation modeling presumptions such as the point source assumption and symmetry assumption for radiation profile of UV-LEDs were evaluated. Subsequently the radiation model and the operational method were implemented to develop a protocol for fluence determination of UV-LED systems. In this protocol, the average fluence was estimated by measuring the irradiance at a few points for a collimated and uniform radiation on a petri dish surface containing microorganism solution. Finally, the developed fluence determination protocol was tested in different setups to evaluate the radiation distribution and its effect on microbial inactivation kinetics measurements. A novel setup was presented for UV-LED kinetics studies; further, the inactivation kinetics of a common waterborne microorganism, E. coli, was measured. This study includes a fundamental holistic insight for fluence determination of UV-LED systems. The developed protocols for UV-LED operation and fluence determination studies help researchers to perform reliable UV-LED inactivation studies and obtain precise kinetics data.
Can coronal hole spicules reach coronal temperatures?
Creators: name: Madjarska, M. S.
name: Vanninathan, K.
name: Doyle, J. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We aim with the present study to provide observational evidences on whether coronal hole spicules reach coronal temperatures. We combine multi-instrument co-observations obtained with the SUMER/SoHO and with the EIS/SOT/XRT/Hinode. The analysed three large spicules were found to be comprised of numerous thin spicules which rise, rotate and descend simultaneously forming a bush-like feature. Their rotation resembles the untwisting of a large flux rope. They show velocities ranging from 50 to 250 km/s. We clearly associated the red- and blue-shifted emissions in transition region lines with rotating but also with rising and descending plasmas, respectively. Our main result is that these spicules although very large and dynamic, show no presence in spectral lines formed at temperatures above 300 000 K. The present paper brings out the analysis of three Ca II H large spicules which are composed of numerous dynamic thin spicules but appear as macrospicules in EUV lower resolution images. We found no coronal counterpart of these and smaller spicules. We believe that the identification of phenomena which have very different origins as macrospicules is due to the interpretation of the transition region emission, and especially the He II emission, wherein both chromospheric large spicules and coronal X-ray jets are present. We suggest that the recent observation of spicules in the coronal AIA/SDO 171 A and 211 A channels is probably due to the existence of transition region emission there.
description: 4 pages, 4 figures, accepted for publication in A&A
Confined acoustic and optical plasmons in double-layered quantum-wire arrays with strong tunneling
Creators: name: Dethlefsen, A. F.
name: Heyn, Christian
name: Heitmann, Detlef
name: Schüller, Christian
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We investigate electronic excitations in GaAs-AlxGa1-xAs double-layered quantum wire arrays with strong tunneling coupling by resonant inelastic light scattering. By applying an external electric field, we can change the one-dimensional (1D) electron density and the symmetry of the double quantum-well (DQW) structure at the same time. We identify confined optical 1D intersubband plasmons (COP) and confined acoustic 1D intersubband plasmons (CAP). Due to the tunneling coupling, the energies of the CAP exhibit a minimum for a symmetric DQW potential, whereas the energies of the COP are dominated by the total carrier density, and are nearly insensitive to the symmetry of the potential.
Effects of Random Link Removal on the Photonic Band Gaps of Honeycomb Networks
Creators: name: Florescu, Marian
name: Torquato, Salvatore
name: Steinhardt, Paul J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We explore the effects of random link removal on the photonic band gaps of honeycomb networks. Missing or incomplete links are expected to be common in practical realizations of this class of connected network structures due to unavoidable flaws in the fabrication process. We focus on the collapse of the photonic band gap due to the defects induced by the link removal. We show that the photonic band gap is quite robust against this type of random decimation and survives even when almost 58% of the network links are removed.
Additional file 4 of Chikungunya seroprevalence in population-based studies: a systematic review and meta-analysis
Creators: name: Skalinski, Lacita Menezes
name: Santos, Aline Elena Sacramento
name: Paixão, Enny
name: Itaparica, Martha
name: Barreto, Florisneide
name: da Conceição Nascimento Costa, Maria
name: Teixeira, Maria Glória
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Supplementary Material 4
Tuning the thermal conductivity of graphene nanoribbons by edge passivation and isotope engineering: a molecular dynamics study
Creators: name: Hu, Jiuning
name: Schiffli, Stephen
name: Vallabhaneni, Ajit
name: Ruan, Xiulin
name: Chen, Yong P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using classical molecular dynamics simulation, we have studied the effect of edge-passivation by hydrogen (H-passivation) and isotope mixture (with random or supperlattice distributions) on the thermal conductivity of rectangular graphene nanoribbons (GNRs) (of several nanometers in size). We found that the thermal conductivity is considerably reduced by the edge H-passivation. We also find that the isotope mixing can reduce the thermal conductivities, with the supperlattice distribution giving rise to more reduction than the random distribution. These results can be useful in nanoscale engineering of thermal transport and heat management using GNRs.
description: 4 pages, 4 figures
Energy and Link Quality Based Routing for Data Gathering Tree in Wireless Sensor Networks Under TINYOS - 2.X
Creators: name: Sivagami, A.
name: Pavai, K.
name: Sridharan, D.
name: Murty, S. A. V. Satya
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Energy is one of the most important and scarce resources in Wireless Sensor Networks (WSN). WSN nodes work with the embedded operating system called TinyOS, which addresses the constrains of the WSN nodes such as limited processing power, memory, energy, etc and it uses the collection Tree Protocol (CTP) to collect the data from the sensor nodes. It uses either the four-bit link estimation or Link Estimation Exchange Protocol (LEEP) to predict the bi directional quality of the wireless link between the nodes and the next hop candidate is based on the estimated link quality. The residual energy of the node is an important key factor, which plays a vital role in the lifetime of the network and hence this has to taken as one of the metric in the parent selection. In this work, we consider the remaining energy of the node as one of the metric to decide the parent in addition to the link quality metrics. The proposed protocol was compared with CTP protocol in terms of number of packets forwarded by each node and packet reception ratio (PRR) of the network. This work was simulated in TOSSIM simulator and the same was tested in Crossbow IRIS radio test bed. The results show that our algorithm performs better than CTP in terms of load distribution and hence the increased lifetime
description: 14 Pages, IJWMN
The subgroup growth spectrum of virtually free groups
Creators: name: Schlage-Puchta, Jan-Christoph
Publisher: name: arXiv
Year: 2011
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E07

description: For a finitely generated group $Γ$ denote by $μ(Γ)$ the growth coefficient of $Γ$, that is, the infimum over all real numbers $d$ such that $s_n(Γ)