cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gas Dynamics in the Barred Seyfert Galaxy NGC4151 - II. High Resolution HI Study
Creators: name: Mundell, C. G.
name: Pedlar, A.
name: Shone, D. L.
name: Robinson, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present sensitive, high angular resolution (6" x 5") 21-cm observations of the neutral hydrogen in the nearby barred Seyfert galaxy, NGC4151. These HI observations, obtained using the VLA in B-configuration, are the highest resolution to date of this galaxy, and reveal hitherto unprecedented detail in the distribution and kinematics of the HI on sub-kiloparsec scales. A complete analysis and discussion of the HI data are presented and the global properties of the galaxy are related to the bar dynamics presented in Paper I.
description: 13 pages including 9 figures and 3 tables; accepted for publication in MNRAS
Identification Via Quantum Channels
Creators: name: Winter, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We review the development of the quantum version of Ahlswede and Dueck's theory of identification via channels. As is often the case in quantum probability, there is not just one but several quantizations: we know at least two different concepts of identification of classical information via quantum channels, and three different identification capacities for quantum information. In the present summary overview we concentrate on conceptual points and open problems, referring the reader to the small set of original articles for details.
description: Review article for the LNCS volume in memory of Rudolf Ahlswede. 17 pages, requires Springer llncs class. V2 corrects a few annoying little errors and reports on recent progress regarding simultaneous vs non-simultaneous ID
A sharper energy method for the localization of the support to some stationary Schr{ö}dinger equations with a singular nonlinearity
Creators: name: Bégout, Pascal
name: Díaz, Jesús Ildefonso
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove the compactness of the support of the solution of some stationary Schr{ö}dinger equations with a singular nonlinear order term. We present here a sharper version of some energy methods previously used in the literature and, in particular, by the authors.
The origin of scatter in the star formation rate - stellar mass relation
Creators: name: Matthee, Jorryt
name: Schaye, Joop
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Observations have revealed that the star formation rate (SFR) and stellar mass (M$_{\rm star}$) of star-forming galaxies follow a tight relation known as the galaxy main sequence. However, what physical information is encoded in this relation is under debate. Here, we use the EAGLE cosmological hydrodynamical simulation to study the mass dependence, evolution and origin of scatter in the SFR-M$_{\rm star}$ relation. At $z=0$, we find that the scatter decreases slightly with stellar mass from 0.35 dex at M$_{\rm star} \approx 10^9$ M$_{\odot}$ to 0.30 dex at M$_{\rm star} \gtrsim 10^{10.5}$ M$_{\odot}$. The scatter decreases from $z=0$ to $z=5$ by 0.05 dex at M$_{\rm star} \gtrsim 10^{10}$ M$_{\odot}$ and by 0.15 dex for lower masses. We show that the scatter at $z=0.1$ originates from a combination of fluctuations on short time-scales (ranging from 0.2-2 Gyr) that are presumably associated with self-regulation from cooling, star formation and outflows, but is dominated by long time-scale ($\sim 10$ Gyr) variations related to differences in halo formation times. Shorter time-scale fluctuations are relatively more important for lower-mass galaxies. At high masses, differences in black hole formation efficiency cause additional scatter, but also diminish the scatter caused by different halo formation times. While individual galaxies cross the main sequence multiple times during their evolution, they fluctuate around tracks associated with their halo properties, i.e. galaxies above/below the main sequence at $z = 0.1$ tend to have been above/below the main sequence for $\gg1$ Gyr.
description: Accepted for publication in MNRAS. Updated comparison to observations. More detailed investigation of the relative importance of SFH-fluctuation time-scales on the SFR(Mstar) scatter (S 4.3, Figs. 6 & 7)
Heteroatom and bridged-ring π-conjugated polymers and their use in organic electronics
Creators: name: Hurhangee, Michael
Publisher: name: Imperial College London
Year: 2016

description: Organic semiconductors have attracted much interest over the last two decades for their potential to replace inorganic semiconductors in a range of applications. This work focuses on the design, synthesis, analysis and characterisation of new semiconducting polymers, and their use as the semiconducting layer in organic field effect transistors. This thesis reports and analyses fourteen novel semiconducting polymers. The substitution of thiophene for thiazole and has led to the synthesis and characterisation of isostructural thiazole containing polymers. We have observed that thiazole can induce extra crystallinity and molecular ordering, but have also noted that thiazole incorporation can lead to increased instability and disorder in polymers. The substitution of protons for fluorines has led to isostructural fluorinated polymers. We have observed that fluorination can stabilise energy levels and does not significantly impact disorder, the solid-state or optical properties. But fluorination does have an adverse impact on the charge transport properties. Through the synthesis of IDT-BT and other IDT copolymers, we have developed an understanding of how molecular design, purification, and annealing can affect its preferential disorder and morphological properties. Furthermore, we have the developed the idea that charge-transport along the rigid planar backbone of IDT-BT is a major charge transport pathway, and that by extending the bridged IDT motif with fused rings we could enforce even greater rigidity and planarity and reduce alkyl chain density along the polymer backbone. The idea increasing the bridge donor length has culminated with the synthesis of TIF. TIF-BT has achieved high charge carrier mobilities and high on-currents of 3.0 cm2 V-1 s-1 and 0.8 mA, respectively. TIF-BT was judiciously designed through applying molecular design criteria, which have been developed throughout this work by improving increasing our understanding of the relationship between chemical structure and charge-transport.
Characterisation of nongrowing Salmonella during macrophage infection
Creators: name: Fisher, Robbie Andrew
Publisher: name: Imperial College London
Year: 2017

description: Persisters are antibiotic tolerant cells thought to be responsible for the recalcitrance and the recurrence of many bacterial infections. Salmonella has been shown to form persisters during macrophage infection, the source of which is a reservoir of nongrowing bacteria. This thesis describes the use of dual RNA-seq, combined with fluorescence dilution and FACS, to analyse the transcriptomes of nongrowing and growing Salmonella as well as the transcriptomes of their respective host macrophages during infection. Interestingly, nongrowing Salmonella were found to express the SPI-2 type three secretion system (T3SS) and infected macrophages were found to be polarised towards an M2 phenotype compared to uninfected bystander cells. Further activity in nongrowing Salmonella was uncovered using fluorescence dilution combined with DAPI-staining, which provided evidence of DNA synthesis during infection. In addition, the toxin-antitoxin module yhfG-fic was investigated in Salmonella after a deletion mutant in this module was found to have a defect during infection, however this was discovered to be due to a polar effect of the deletion on the expression of the downstream gene pabA. Heterogeneity in the lag distributions of growing and nongrowing Salmonella post-infection was also investigated in this study, using the ScanLag technique. Deletion of TA modules, which have previously been linked to persister formation, had a minimal effect of the lag distributions of nongrowing Salmonella, however the lag times of growing bacteria were increased. The SOS response was found to affect lag times and is important for Salmonella recovery post-infection, regardless of growth state.
Weak reaction freeze-out constraints on primordial magnetic fields
Creators: name: Suh, In-Saeng
name: Mathews, G. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore constraints on the strength of the primordial magnetic field based upon the weak reaction freeze-out in the early universe. We find that limits on the strength of the magnetic field found in other works are recovered simply by examining the temperature at which the rate of weak reactions drops below the rate of universal expansion ($Γ_{w} \le$ H). The temperature for which the $n/p$ ratio at freeze-out leads to acceptable helium production implies limits on the magnetic field. This simplifies the application of magnetic fields to other cosmological variants of the standard big-bang. As an illustration we also consider effects of neutrino degeneracy on the allowed limits to the primordial magnetic field.
description: Submitted to Phys. Rev. D., 6 pages, 2 figures
Physically-coupled bimanual coordination in children
Creators: name: Abdul Mutalib, Sharah
Publisher: name: Imperial College London
Year: 2018

description: This thesis explores physically-coupled bimanual coordination amongst typically developing (TD) children, as well as children with unilateral spastic cerebral palsy (USCP). Unlike TD children, who acquire bimanual skills through activities of daily living (ADLs), children with USCP exhibit sensorimotor impairments to half side of their body, that impede their ability to learn and adapt two-handed skills into ADLs. While bimanual training is increasingly being incorporated into rehabilitation, the evidence for its effectiveness in improving the functional capacity of children with USCP against standard care is modest at best. This thesis argues that there is a fundamental gap in the knowledge, thus impeding our understanding, of how bimanual skills develop and manifest under both TD and USCP conditions. Specifically, much of what we know about bimanual development in children comes from studies on uncoupled bimanual tasks, where the hands control two independent objects. Conversely, there has been a minimal effort to systematically quantify the behaviours underlying ubiquitous physically-coupled bimanual coordination, where the hands manipulate a common shared object. Bimanual coordination of TD children and children with USCP was explored through four experiments that incorporated different forms of physical coupling (visual and haptic feedback), mechanics (modulating object stiffness), and congruence. This was achieved using instrumented objects, a robotic interface and novel metrics developed within this thesis that enable the elucidation of various synergies between the two hands to be quantified. The findings from this thesis provide important implications for understanding the normal and impaired behaviour of bimanual action amongst TD children and children with USCP, as well as amongst healthy adults. Specific contributions of this thesis come from (1) development and application of a suite of instrumented objects and robotic interfaces to study the broader spectrum of physically-coupled bimanual tasks, (2) development of novel metrics, e.g. grip-load monotonicity to quantify and stratify normal and pathological behaviours in early childhood development, and (3) a deeper understanding of the interplay between haptic and visual feedback in shared object manipulation tasks. The results provide evidence that physical coupling may facilitate bimanual coordination, especially in the presence of haptic feedback. Therefore, this thesis proposes that true physical interaction during bimanual activities may provide a new opportunity for the rehabilitation of children with USCP.
A New Semiclassical Picture of Vacuum Decay
Creators: name: Braden, Jonathan
name: Johnson, Matthew C.
name: Peiris, Hiranya V.
name: Pontzen, Andrew
name: Weinfurtner, Silke
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We introduce a new picture of vacuum decay which, in contrast to existing semiclassical techniques, provides a real-time description and does not rely on classically-forbidden tunneling paths. Using lattice simulations, we observe vacuum decay via bubble formation by generating realizations of vacuum fluctuations and evolving with the classical equations of motion. The decay rate obtained from an ensemble of simulations is in excellent agreement with existing techniques. Future applications include bubble correlation functions, fast decay rates, and decay of non-vacuum states.
description: v2: supplemental material added, accepted to PRL. v1: 5 pages
A Candidate Substellar Companion to CoD -33 7795 (TWA 5)
Creators: name: Lowrance, P. J.
name: McCarthy, C.
name: Becklin, E. E.
name: Zuckerman, B.
name: Schneider, G.
name: Webb, R. A.
name: Hines, D. C.
name: Kirkpatrick, J. D.
name: Koerner, D. W.
name: Low, F.
name: Meier, R.
name: Rieke, M.
name: Smith, B. A.
name: Terrile, R. J.
name: Thompson, R. I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the discovery of a candidate substellar object in a survey of young stars in the solar vicinity using the sensitivity and spatial resolution afforded by the NICMOS coronagraph on the Hubble Space Telescope. The H=12.1 mag object was discovered approximately 2 arcsec from the TW Hydrae Association member CoD -33 7795 (TWA 5), and the photometry implies a spectral type M8-M8.5, with a temperature of approximately 2600K. We estimate that the probability of a chance alignment with a background objectof this nature is < 2 X 10^(-5), and therefore postulate the object (TWA 5B) is physically associated at a projected separation of 100 AU. Given the likely youth of the primary (~ 10 Myr), current brown dwarf cooling models predict a mass of approximately 20 Jupiter masses for TWA 5B.
description: LATEX, 10 pages, 2 figures, accepted for publication in ApJ Letters
SCAIGATE: Science Gateway for Scientific Computing with Artificial Intelligence and Reconfigurable Architectures
Creators: name: Ojika, David
name: Lam, Herman
name: Gordon-Ross, Ann
name: Bhavesh Patel
Publisher: name: figshare
Year: 2018
Subjects: subject: 80199 Artificial Intelligence and Image Processing not elsewhere classified
subject: FOS: Computer and information sciences
subject: Artificial Intelligence and Image Processing
subject: Computer Software
subject: 80302 Computer System Architecture
subject: Distributed Computing
subject: 80599 Distributed Computing not elsewhere classified
subject: 80501 Distributed and Grid Systems
subject: Information Systems
subject: 80107 Natural Language Processing
subject: 80306 Open Software
subject: 80307 Operating Systems
subject: 80110 Simulation and Modelling

description: SCAIGATE is an ambitious project to design the first artificial intelligence (AI)-centric science gateway based on field-programmable gate arrays (FPGAs). The goal is to democratize access to FPGAs and AI in scientific computing and related applications. When completed, the project will enable the large-scale deployment and use of machine learning models on AI-centric FPGA platforms, allowing increased performance efficiency, reduced development effort, and customization at an unprecedented scale, all while simplifying ease-of-use in science domains that were previously AI-lagging. SCAIGATE was an incubation project at the Science Gateway Community Institute (SGCI) boot camp held in Austin, Texas in 2018.
Existence of weak solutions to some stationary Schr{ö}dinger equations with singular nonlinearity
Creators: name: Bégout, Pascal
name: Díaz, Jesús Ildefonso
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove some existence (and sometimes also uniqueness) of weak solutions to some stationary equations associated to the complex Schr\''{o}dinger operator under the presence of a singular nonlinear term. Among other new facts, with respect some previous results in the literature for such type of nonlinear potential terms, we include the case in which the spatial domain is possibly unbounded (something which is connected with some previous localization results by the authors), the presence of possible non-local terms at the equation, the case of boundary conditions different to the Dirichlet ones and, finally, the proof of the existence of solutions when the right-hand side term of the equation is beyond the usual $L^2$-space.
Normality criteria for a family of meromorphic functions with multiple zeros
Creators: name: Datt, Gopal
name: Li, Yuntong
name: Rani, Poonam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D45, 30D35

description: In this article, we prove some normality criteria for a family of meromorphic functions having zeros with some multiplicity. Our main result involves sharing of a holomorphic function by certain differential polynomials. Our results generalize some of the results of Fang and Zalcman and Chen et al to a great extent.
Discovery of seven T Tauri stars and a brown dwarf candidate in the nearby TW Hydrae Association
Creators: name: Webb, R. A.
name: Zuckerman, B.
name: Platais, I.
name: Patience, J.
name: White, R. J.
name: Schwartz, M. J.
name: McCarthy, C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of five T Tauri star systems, two of which are resolved binaries, in the vicinity of the nearest known region of recent star formation, the TW Hydrae Association. The newly discovered systems display the same signatures of youth (namely high X-ray flux, large Li abundance and strong chromospheric activity) and the same proper motion as the original five members. These similarities firmly establish the group as a bona fide T Tauri association, unique in its proximity to Earth and its complete isolation from any known molecular clouds. At an age of ~10 Myr and a distance of ~50 pc, the association members are excellent candidates for future studies of circumstellar disk dissipation and the formation of brown dwarfs and planets. Indeed, as an example, our speckle imaging revealed a faint, very likely companion 2" north of CoD-33 7795 (TWA 5). Its color and brightness suggest a spectral type ~M8.5 which, at an age of ~10^7 years, implies a mass ~20 M(Jupiter).
description: 6 pages, 4 figures and 1 table. AAS LaTeX aas2pp4.sty. To be published in ApJ
Game Development-Based Learning Experience: Gender Differences in Game Design
Creators: name: Spieler, Bernadette
name: Slany, Wolfgang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computers and Society (cs.CY)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Learning theories emphasize the importance of intrinsic and extrinsic motivators in curricula, and games are a promising way to provide both while constructing the game and presenting or sharing it in public or with a community. New technologies and the emerging mobile gaming sector further the case that learning should be promoted everywhere and anytime. What seems to be a promising opportunity for all pupils to learn coding in an entertaining way raises the question of whether such game based concepts also help to fix the gender gap of women in IT related fields. Gender differences are already present in secondary schools. These are the years where first career choices but also low levels of participation in technical subjects occur. To address this gender bias, a goal of the European project No One Left Behind (NOLB) was to integrate Pocket Code, an app developed by Catrobat, a free open source non-profit project at the University of Technology in Graz/Austria, into different school subjects, thus making coding more accessible and attractive to female pupils. During the period of this project (2015-2017), teachers were supported to guide their pupils in the learning processes by constructing ideas and realizing them through game design. For this paper an analysis of submitted programs according to their game design has been performed. In detail, the evaluation considered formal game elements, gaming structures, and used graphics, as well as Pocket Code specific aspects. The programs analysis showed commonly used design patterns by genders and suggests preferred game design characteristics of female teenagers. This analysis helps to build a more creative and inclusive Game Development-Based Learning (GDBL) environment that provides room for self-expression and inspires by building on intrinsic and extrinsic motivators by constructing personal experiences.
description: 10 pages, 8 figures, ECGBL 2018
The development and application of liquid chromatography/tandem mass spectrometry (LC-MS/MS) methods for the quantification of the gut hormones peptide YY, glucagon-like peptide-1 and oxyntomodulin
Creators: name: Clarke, Rosemary Emily Jane
Publisher: name: Imperial College London
Year: 2018

description: Our current understanding of gut hormones is limited by our inability to measure their concentration with sufficient specificity and sensitivity. Liquid chromatography tandem mass spectrometry (LC-MS/MS) has already been applied to glucagon quantification and offers a potential solution. This PhD aimed to develop LC-MS/MS methods for the quantification of five peptide gut hormones: glucagon-like peptide-1 (GLP-1) 7-36 amide, GLP-1 9-36 amide, oxyntomodulin, peptide YY (PYY) 1-36 and PYY 3-36. The optimised extraction of the gut hormones from plasma comprised protein precipitation, followed by solid phase extraction using the Oasis MAX µElution plate. Sample extraction was customised to reduce protein and lipid interferents, with recoveries of 21-32%. Extraction was into a surrogate matrix of 20µg/mL bovine serum albumin, 20% acetic acid and 10% methanol developed to minimise non-specific adsorption. Stable-isotopically labelled internal standards for each gut hormone were used. The ultra performance liquid chromatography method on a Waters Peptide BEH C18 130Å column demonstrated good separation of the gut hormones from each other. The mobile phases were water (A), and acetonitrile (B), both with 0.1% formic acid. The flow rate was 0.35mL/min and the elution gradient 80-65% A over 9 minutes. A Waters Xevo TQ-S triple quadrupole mass spectrometer was used in multiple reaction monitoring mode. Ionisation was in positive mode using atmospheric pressure electrospray ionisation. Specific precursor and product ions were measured for each gut hormone and internal standard. Spiked plasma samples for calibration line standards and quality control samples were measured. The method was imprecise with coefficients of variation >15%. The method could not be validated. Non-specific adsorption of the peptide gut hormones occurred despite optimisation of container type, temperature, solvent and sample handling. Specificity was improved in comparison to immunoassay. Future work will concentrate on PYY species and aim to improve the sample extraction recovery and precision.
Analytic Models for the Mechanical Structure of the Solar Core
Creators: name: Kennedy, Dallas C.
name: Bludman, Sidney A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: All stars exhibit universal central behavior in terms of new homology variables (u,w). In terms of these variables, we obtain simple analytic fits to numerical standard solar models for the core and radiative zones of the ZAMS and present Suns, with a few global parameters. With these analytic fits, different theoretical models of the solar core, neutrino fluxes, and helioseismic observations can be parametrized and compared.
description: 16 pages, 14 PostScript figures, uses AASTeX, minor corrections; accepted by Astrophysical Journal
Comparative Evolution of Jupiter and Saturn
Creators: name: Hubbard, W. B.
name: Guillot, T.
name: Marley, M. S.
name: Burrows, A.
name: Lunine, J. I.
name: Saumon, D. S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present evolutionary sequences for Jupiter and Saturn, based on new nongray model atmospheres, which take into account the evolution of the solar luminosity and partitioning of dense components to deeper layers. The results are used to set limits on the extent to which possible interior phase separation of hydrogen and helium may have progressed in the two planets. When combined with static models constrained by the gravity field, our evolutionary calculations constrain the helium mass fraction in Jupiter to be between 0.20 and 0.27, relative to total hydrogen and helium. This is in agreement with the Galileo determination. The helium mass fraction in Saturn's atmosphere lies between 0.11 and 0.25, higher than the Voyager determination. Based on the discrepancy between the Galileo and Voyager results for Jupiter, and our models, we predict that Cassini measurements will yield a higher atmospheric helium mass fraction for Saturn relative to the Voyager value.
description: 18 pages, LaTeX, 4 figures. submitted to ``Planetary and Space Science.''
A Look At Three Different Scenarios for Bulge Formation
Creators: name: Bouwens, Rychard J.
name: Cayon, Laura
name: Silk, Joseph
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we present three qualitatively different scenarios for bulge formation: a secular evolution model in which bulges form after disks and undergo several central starbursts, a primordial collapse model in which bulges and disks form simultaneously, and an early bulge formation model in which bulges form prior to disks. We normalize our models to the local z=0 observations of de Jong & van der Kruit (1994) and Peletier & Balcells (1996) and make comparisons with high redshift observations. We consider model predictions relating directly to bulge-to-disk properties. As expected, smaller bulge-to-disk ratios and bluer bulge colors are predicted by the secular evolution model at all redshifts, although uncertainties in the data are currently too large to differentiate strongly between the models.
description: 19 pages, 6 figures, accepted for publication in the Astrophysical Journal
title: Minimal Admissible Control of Constrained Static Linear Systems with Applications to Power Systems
Creators: name: Mora Gil, Edwin Camilo
Publisher: name: UNSPECIFIED
Year: 2022

description: The path to the energy transition calls for adaptation of current decision-making algorithms in power grid operations. On this premise, novel control algorithms are desired such that the intrinsic uncertainty accompanying renewable/decentralized power generation does not jeopardize the balancing between power supply and demand. More challenging, the number of control and monitoring devices installed in the grid is growing rapidly, which inevitably introduces cyber-physical vulnerabilities. Future power systems must hence incorporate an enhanced operational resilience against unexpected, high-impact events like natural catastrophes or cyber-physical threats. With the above scope, and abstracting the power network as a constrained static linear system, this thesis contributes a novel mathematical framework for the characterization and computation of admissible control laws. An admissible control law is understood as a feedback mapping that assigns measured quantities to control actions that always result in a possibly uncertain, but feasible system state. A central part of this thesis investigates how to verify the existence of admissible control laws. Although such verification task is in general computationally challenging, we show that in some special cases it turns into solving a finite dimensional feasibility problem. We also prove that, under appropriate assumptions, an admissible control law can always be chosen to be a piecewise-affine function that is computable either online via linear programming, or offline by solving a two-stage multiparametric linear optimization problem. In addition, the existence of admissible affine control laws can in many cases be verified efficiently by solving a linear optimization problem that also yields an admissible realization for the control law if one exists. Furthermore, our framework provides algorithms for 1) the computation of lower and upper bounds for the minimal number of actuators and sensors that guarantee the existence of an admissible control law, 2) the design of admissible control laws that additionally cope with unexpected, malicious manipulation of some actuator/sensor signals, and 3) the computation of admissible affine output feedback control laws for constrained, linear time-invariant systems. We finally illustrate the potential of our ideas with various applications in power flow control. Particularly, we apply our methods to identify critical generator and sensor devices for robust active power flow control in transmission networks. Besides, we show how to design robust voltage/VAr control policies for distribution networks having a large amount of photovoltaic generation units combined with imperfect observations. The set of novel tools presented in this thesis will assist both transmission and distribution system operators in many grid operation and planning tasks towards achieving the energy transition.
Spectral Energy Distributions of Passive T Tauri Disks: Inclination
Creators: name: Chiang, E. I.
name: Goldreich, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute spectral energy distributions (SEDs) for passive T Tauri disks viewed at arbitrary inclinations. Semi-analytic models of disks in radiative and hydrostatic equilibrium are employed. Over viewing angles for which the flared disk does not occult the central star, the SED varies negligibly with inclination. For such aspects, the SED shortward of ~80 microns is particularly insensitive to orientation, since short wavelength disk emission is dominated by superheated surface layers which are optically thin. The SED of a nearly edge-on disk is that of a class I source. The outer disk occults inner disk regions, and emission shortward of ~30 microns is dramatically extinguished. Spectral features from dust grains may appear in absorption. However, millimeter wavelength fluxes decrease by at most a factor of 2 from face-on to edge-on orientations. We present illustrative applications of our SED models. The class I source 04108+2803B is considered a T Tauri star hidden from view by an inclined circumstellar disk. Fits to its observed SED yield model-dependent values for the disk mass of ~0.015 solar masses and a disk inclination of ~65 degrees relative to face-on. The class II source GM Aur represents a T Tauri star unobscured by its circumstellar disk. Fitted parameters include a disk mass of \~0.050 solar masses and an inclination of ~60 degrees.
description: Accepted to ApJ, 20 pages, 7 figures, aaspp4.sty
Normality and Sharing Functions
Creators: name: Datt, Gopal
name: Kumar, Sanjay
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D45

description: In this article, we prove a normality criterion for a family of meromorphic functions which involves sharing of holomorphic functions. Our result generalizes some of the results of H. H. Chen, M. L. Fang and M. Han, Y. Gu.
title: ADCO, Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Cart. 178 (11 H 80), 82 folios, f. 0112
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 178 (11 H 80), 82 folios, f. 0112, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 178 (11 H 80), 82 folios, f. 0112, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
On a Theorem of Schwick
Creators: name: Datt, Gopal
name: Kumar, Sanjay
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D45

description: Let D be a domain, n, k be positive integers and n >= K+3. Let F be a family of functions meromorphic in D. If each f in F satisfies (f^n)^(k) not equal to 1 for z in D, then F is normal family. This result was proved by Schwick. In this paper we extend this result.
description: Comments are welcome
Additional file 9: of Longitudinal associations of in utero and early life near-roadway air pollution with trajectories of childhood body mass index
Creators: name: Kim, Jeniffer
name: Alderete, Tanya
name: Zhanghua Chen
name: Lurmann, Fred
name: Rappaport, Ed
name: Habre, Rima
name: Kiros Berhane
name: Gilliland, Frank
Publisher: name: figshare
Year: 2018
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Independent effects of in utero or first year of life near-road freeway NOx exposure on 4-year childhood BMI trajectories in movers and non-movers. (DOCX 15 kb)
Some Normality Criteria
Creators: name: Datt, Gopal
name: Kumar, Sanjay
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D45

description: In this article we prove some normality criteria for a family of meromorphic functions which involves sharing of a non-zero value by certain differential monomials generated by the members of the family. These results generalizes some of the results of Schwick.
description: 16 Pages. Comments are welcome, Communicated
Coronae of product spaces and the Coarse Baum-Connes conjecture
Creators: name: Fukaya, Tomohiro
name: Oguni, Shin-ichi
Publisher: name: arXiv
Year: 2014
Subjects: subject: K-Theory and Homology (math.KT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: Primary 58J22, Secondary 20F65, 20F67

description: We study the coarse Baum-Connes conjecture for product spaces and product groups. We show that a product of CAT(0) groups, polycyclic groups and relatively hyperbolic groups which satisfy some assumptions on peripheral subgroups, satisfies the coarse Baum-Connes conjecture. For this purpose, we construct and analyze an appropriate compactification and its boundary, "corona", of a product of proper metric spaces.
description: 35 pages
POTENT Reconstruction from Mark III Velocities
Creators: name: Dekel, A.
name: Eldar, A.
name: Kolatt, T.
name: Yahil, A.
name: Willick, J. A.
name: Faber, S. M.
name: Courteau, S.
name: Burstein, D.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an improved POTENT method for reconstructing the velocity and mass density fields from radial peculiar velocities, test it with mock catalogs, and apply it to the Mark III Catalog. Method improvments: (a) inhomogeneous Malmquist bias is reduced by grouping and corrected in forward or inverse analyses of inferred distances, (b) the smoothing into a radial velocity field is optimized to reduce window and sampling biases, (c) the density is derived from the velocity using an improved nonlinear approximation, and (d) the computational errors are made negligible. The method is tested and optimized using mock catalogs based on an N-body simulation that mimics our cosmological neighborhood, and the remaining errors are evaluated quantitatively. The Mark III catalog, with ~3300 grouped galaxies, allows a reliable reconstruction with fixed Gaussian smoothing of 10-12 Mpc/h out to ~60 Mpc/h. We present maps of the 3D velocity and mass-density fields and the corresponding errors. The typical systematic and random errors in the density fluctuations inside 40 Mpc/h are \pm 0.13 and \pm 0.18. The recovered mass distribution resembles in its gross features the galaxy distribution in redshift surveys and the mass distribution in a similar POTENT analysis of a complementary velocity catalog (SFI), including the Great Attractor, Perseus-Pisces, and the void in between. The reconstruction inside ~40 Mpc/h is not affected much by a revised calibration of the distance indicators (VM2, tailored to match the velocities from the IRAS 1.2Jy redshift survey). The bulk velocity within the sphere of radius 50 Mpc/h about the Local Group is V_50=370 \pm 110 km/s (including systematic errors), and is shown to be mostly generated by external mass fluctuations. With the VM2 calibration, V_50 is reduced to 305 \pm 110 km/s.
description: 60 pages, LaTeX, 3 tables and 27 figures incorporated (may print the most crucial figures only, by commenting out one line in the LaTex source)
Post transcriptional regulation of microRNAs in embryonic stem cells
Creators: name: Alexieva, Diana
Publisher: name: Imperial College London
Year: 2017

description: In this project a block in processing of primary miRNA transcripts (pri-miRNAs) in human embryonic stem cells was demonstrated. Pri-miRNAs for 15 out of 24 tested intergenic miRNAs were detected by RT-PCR in the H1 cell line despite a lack of detection of their mature form in deep sequencing data. By contrast, only 2 out of 16 pri-miRNAs for which expression of the mature form was not reported were successfully amplified by RT-PCR in HEK293T cells. A reduction in the pri-miRNA levels was observed upon blocking transcription in H1 cells and the vast majority of the same pri-miRNAs were detected by RT-PCR using nascent RNA, indicative of their active transcription and degradation. To test whether hESCs cells vigorously transcribe yet degrade more mRNA transcripts in general than differentiated cells we isolated nascent and total RNA samples from H1 and HEK293T cells and performed a microarray analysis using the Illumina HT-12 v4 platform. There were no significant differences in the number of genes transcribed in the two cell lines and across both types of RNA samples. These results suggested that a similar proportion of the coding part of the genome is actively or vigorously transcribed in both hESCs and differentiated cell types. It is generally thought that ESCs have a higher level of background transcription than normal, due to the more open chromatin in this cell type. We therefore suggest that background transcription might be responsible for our detection of immature miRNA transcripts in hESCs instead of vigorous transcription and that enhanced background transcription has a measurable impact perhaps because pri-miRNAs are normally only transcribed at relatively low rates compared to other genes. We still need to explain why some pri-miRNA transcripts are degraded in ESCs. One possibility is that such miRNAs express both sense and antisense transcripts.
Additional file 8: of Longitudinal associations of in utero and early life near-roadway air pollution with trajectories of childhood body mass index
Creators: name: Kim, Jeniffer
name: Alderete, Tanya
name: Zhanghua Chen
name: Lurmann, Fred
name: Rappaport, Ed
name: Habre, Rima
name: Kiros Berhane
name: Gilliland, Frank
Publisher: name: figshare
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Effects of in utero/first year of life and childhood ambient PM2.5 exposure on 4-year childhood BMI trajectories. (DOCX 14 kb)
The spectrum and term analysis of singly-ionised manganese
Creators: name: Liggins, Florence
Publisher: name: Imperial College London
Year: 2017

description: This thesis reports on the term analysis of singly-ionised manganese carried out in order to improve the accuracy and completeness of available Mn II atomic wavelengths and energy levels, for astrophysical applications. An extensive analysis of the Mn spectrum was carried out using high-resolution Fourier Transform (FT) spectra, supplemented with grating measurements, of Mn(Ne) and Mn(Ar) hollow cathode discharge sources, over the range 1820 – 121728 cm-1. The analysis of these spectra has resulted in accurate wavelength measurements for a total of 2360 Mn II lines of which 1219 are measured through FTS. These wavelengths are given to at least an order of magnitude greater accuracy compared with previous measurements. Energy level values have been revised for a total of 477 levels with typical uncertainties found to ~few mK (0.001 cm-1). In addition, 27 new energy level values of Mn II have been found from which 213 Mn II lines have been newly classified. This analysis has also enabled 56 Mn II energy levels, previously established through observation of stellar spectra alone, to be verified using laboratory-measured high-resolution FTS wavelengths.
The evolution of a supermassive binary caused by an accretion disc
Creators: name: Ivanov, P. B.
name: Papaloizou, J. C. B.
name: Polnarev, A. G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The interaction of a massive binary and a non-self-gravitating circumbinary accretion disc is considered. The shape of the stationary twisted disc produced by the binary is calculated. It is shown that the inner part of the disc must lie in the binary orbital plane for any value of viscosity. When the inner disc midplane is aligned with the binary orbital plane on the scales of interest and it rotates in the same sense as the binary, the modification of the disc structure and the rate of decay of the binary orbit, assumed circular, due to tidal exchange of angular momentum with the disc, are calculated. It is shown that the modified disc structure is well described by a self-similar solution of the non-linear diffusion equation governing the evolution of the disc surface density. The calculated time scale for decay of the binary orbit is always smaller than the "accretion" time $t_{acc}=m/{\dot M}$ ($m$ is the mass of the secondary component, and $\dot M$ is the disc accretion rate), and is determined by ratio of secondary mass $m$, assumed to be much smaller than the primary mass, the disc mass inside the initial binary orbit, and the form of viscosity in the disc.
description: to be published in MNRAS
Spatial Mapping of Torques within a Spin Hall Nano-oscillator
Creators: name: Spicer, Timothy M
name: Keatley, Paul S
name: Loughran, Thomas H J
name: Dvornik, Mykola
name: Awad, A. A.
name: Dürrenfeld, Philipp
name: Houshang, Afshin
name: Ranjbar, Mojtaba
name: Åkerman, Johan
name: Kruglyak, Volodymyr V.
name: Hicken, Robert J
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Time-resolved scanning Kerr microscopy (TRSKM) was used to study precessional magnetization dynamics induced by a radio frequency (RF) current within a Al$_2$O$_3$/Py(5 nm)/Pt(6 nm)/Au(150 nm) spin Hall nano-oscillator structure. The Au layer was formed into two needle-shaped electrical contacts that concentrated the current in the centre of a Py/Pt mesa of 4 $μ$m diameter. Due to the spin Hall effect, current within the Pt layer drives a spin current into the Py layer, exerting a spin transfer torque (STT). By injecting RF current, and exploiting the phase-sensitivity of TRSKM and the symmetry of the device structure, the STT and Oersted field torques have been separated and spatially mapped. The STT and torque due to the in-plane Oersted field are observed to exhibit minima at the device centre that is ascribed to spreading of RF current that is not observed for DC current. Torques associated with the RF current may destabilise the position of the self-localised bullet mode excited by the DC current, and inhibit injection locking. The present study demonstrates the need to characterise both DC and RF current distributions carefully.
Quantum physics meets biology
Creators: name: Arndt, Markus
name: Juffmann, Thomas
name: Vedral, Vlatko
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum physics and biology have long been regarded as unrelated disciplines, describing nature at the inanimate microlevel on the one hand and living species on the other hand. Over the last decades the life sciences have succeeded in providing ever more and refined explanations of macroscopic phenomena that were based on an improved understanding of molecular structures and mechanisms. Simultaneously, quantum physics, originally rooted in a world view of quantum coherences, entanglement and other non-classical effects, has been heading towards systems of increasing complexity. The present perspective article shall serve as a pedestrian guide to the growing interconnections between the two fields. We recapitulate the generic and sometimes unintuitive characteristics of quantum physics and point to a number of applications in the life sciences. We discuss our criteria for a future quantum biology, its current status, recent experimental progress and also the restrictions that nature imposes on bold extrapolations of quantum theory to macroscopic phenomena.
description: 26 pages, 4 figures, Perspective article for the HFSP Journal
Local root numbers of elliptic curves over dyadic fields
Creators: name: Imai, Naoki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G07, 11S40

description: We consider an elliptic curve over a dyadic field with additive, potentially good reduction. We study the finite Galois extension of the dyadic field generated by the three-torsion points of the elliptic curve. As an application, we give a formula to calculate the local root number of the elliptic curve over the dyadic field.
description: 11 pages