cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dentists and the institutionalized elderly : issues in long term care dental services
Creators: name: Weiss, Rachel Tobiasz
Publisher: name: University of British Columbia
Year: 2010

description: A recent survey of the oral health of the institutionalized elderly in Greater Vancouver revealed that despite a number of dental problems amongst the chronically ill, few had been seen by a dentist since their admission to the facilities. A major issue in establishing dental services is the willingness of dentists to provide services in the long term care facilities. Three theoretical models were developed to predict dentists' interest in long term care dental practice. The socio-cultural model, which emphasizes cultural prejudices towards the elderly, was based on a number of attitudinal studies of the profession(eg.the belief that the elderly are uncommunicative and ungrateful or the aversion to depressing atmospheres of facilities). The professional model focused on professional training and socialization and the ideological focus of dentistry on reparative therapy(eg.undergraduate training with the disabled, or the perception of limited treatment options for the chronically ill). The economic model predicted that opportunity costs, that is, private practice and leisure time, would be critical in the decision to treat the institutionalized elderly. Questions relating to each of these models were included in a survey questionnaire. The survey, mailed to 603 dentists in the greater Vancouver area, asked dentists about their experience and interest in working with both the well and disabled elderly. Over half the population responded to the survey, and the results were analyzed to determine which model best predicted interest in institutional dental delivery. In the findings, 37% of the dentists indicated definite interest in practising at a facility if called upon by the administrator, and 19% of the survey respondents had practised at a facility previously.lt was concluded from a multiple classification analysis that both professional and economic, but not socio-cultural, forces guide the servicing decisions of dentists with respect to long term care service. Professional satisfaction in treating the elderly was the most significant predictor of interest. This satisfaction was linked to several enabling factors, such as the availability of a dental operatory at an institution, and experience and training with medically compromised patients. Those dentists who had extensive institutional experience, and young dentists who were beginning a practice and who were not busy, were the dentists most likely to be interested in extending their practice to long term care facilities. Conversely, those dentists who were busy in their private practice, and who had little training in treating the chronically ill, were the least likely to show interest in this area. The findings indicate that in order to extend dental services to those elderly in nursing homes and hospitals, an appropriate education, both didactic and clinical, and an acceptable financial arrangement for such specialized services should be introduced into the dental community.
The correlations between the spin frequencies and kHz QPOs of Neutron Stars in LMXBs
Creators: name: Yin, H. X.
name: Zhang, C. M.
name: Zhao, Y. H.
name: Lei, Y. J.
name: Qu, J. L.
name: Song, L. M.
name: Zhang, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We studied the correlations between spin frequencies and kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low mass X-ray binaries. The updated data of kHz QPOs and spin frequencies are statistically analyzed. We found that when two simultaneous kHz QPOs are present in the power spectrum, the minimum frequency of upper kHz QPO is at least 1.3 times larger than the spin frequency, i.e. ν_{s}
description: 4 pages, 2 figures, accepted for publication in A&A
A two-colour heterojunction unipolar nanowire light-emitting diode by tunnel injection
Creators: name: Zimmler, Mariano A.
name: Bao, Jiming
name: Shalish, Ilan
name: Yi, Wei
name: Narayanamurti, Venkatesh
name: Capasso, Federico
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a systematic study of the current-voltage characteristics and electroluminescence of gallium nitride (GaN) nanowire on silicon (Si) substrate heterostructures where both semiconductors are n-type. A novel feature of this device is that by reversing the polarity of the applied voltage the luminescence can be selectively obtained from either the nanowire or the substrate. For one polarity of the applied voltage, ultraviolet (and visible) light is generated in the GaN nanowire, while for the opposite polarity infrared light is emitted from the Si substrate. We propose a model, which explains the key features of the data, based on electron tunnelling from the valence band of one semiconductor into the conduction band of the other semiconductor. For example, for one polarity of the applied voltage, given a sufficient potential energy difference between the two semiconductors, electrons can tunnel from the valence band of GaN into the Si conduction band. This process results in the creation of holes in GaN, which can recombine with conduction band electrons generating GaN band-to-band luminescence. A similar process applies under the opposite polarity for Si light emission. This device structure affords an additional experimental handle to the study of electroluminescence in single nanowires and, furthermore, could be used as a novel approach to two-colour light-emitting devices.
description: 9 pages, 11 figures
Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides
Creators: name: Si, Qimiao
name: Abrahams, Elihu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the iron pnictides in terms of a proximity to a Mott insulator. The superexchange interactions contain competing nearest-neighbor and next-nearest-neighbor components. In the undoped parent compound, these frustrated interactions lead to a two-sublattice collinear antiferromagnet (each sublattice forming a Neel ordering), with a reduced magnitude for the ordered moment. Electron or hole doping, together with the frustration effect, suppresses the magnetic ordering and allows a superconducting state. The exchange interactions favor a d-wave superconducting order parameter; in the notation appropriate for the Fe square lattice, its orbital symmetry is $d_{xy}$. A number of existing and future experiments are discussed in light of the theoretical considerations.
description: (v2) 4+ pages, 4 figures, discussions on several points expanded; references added. To appear in Phys. Rev. Lett
Coupled-channel evaluations of cross sections for scattering involving particle-unstable resonances
Creators: name: Fraser, P.
name: Amos, K.
name: Canton, L.
name: Pisent, G.
name: Karataglidis, S.
name: Svenne, J. P.
name: van der Knijff, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: How does the scattering cross section change when the colliding bound-state fragments are allowed particle-emitting resonances? This question is explored in the framework of a multi-channel algebraic scattering method of determining nucleon-nucleus cross sections at low energies. Two cases are examined, the first being a gedanken investigation in which n + carbon-12 scattering is studied with the target states assigned artificial widths. The second is a study of neutron scattering from beryllium-8; a nucleus that is particle unstable. Resonance character of the target states markedly varies evaluated cross sections from those obtained assuming stability in the target spectrum.
description: 4 pages, 3 figures
Experimental Study on Interceptor's Efectiveness
Creators: name: De Luca, Fabio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: La tesi affronta lo studio degli interceptor. La principale funzione di questi è la riduzione della resistenza all'avanzamento delle navi veloci. Dispositivi basati su principi simili sono stati applicati in altri contesti (aeronautici, automobilistici, ecc.). Si è ritenuto utile affrontare questo studio per la insufficiente conoscenza della dinamica determinata dall'interferenza interceptor-carena, diversa a causa della presenza dell'interfaccia aria-acqua. Ad oggi, in ambito navale, l'argomento non è mai stato affrontato con procedure sperimentali sistematiche. I risultati ottenuti hanno evidenziato e giustificato la grande efficacia di questi dispositivi se applicati correttamente. La quantità di dati sperimentali ottenuti ha consentito un sostanziale arricchimento della banca dati disponibile in letteratura. In fine, la comprensione del modello fisico ha permesso l’elaborazione di geometrie non convenzionali ed innovative che magnificano le caratteristiche proprie del dispositivo.
Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New $^{22}$Mg$(α,p)^{25}$Al Reaction Rate Determined at Gamow Energy
Creators: name: Hu, J.
name: Yamaguchi, H.
name: Lam, Y. H.
name: Heger, A.
name: Kahl, D.
name: Jacobs, A. M.
name: Johnston, Z.
name: Xu, S. W.
name: Zhang, N. T.
name: Ma, S. B.
name: Ru, L. H.
name: Liu, E. Q.
name: Liu, T.
name: Hayakawa, S.
name: Yang, L.
name: Shimizu, H.
name: Hamill, C. B.
name: Murphy, A. St J.
name: Su, J.
name: Fang, X.
name: Chae, K. Y.
name: Kwag, M. S.
name: Cha, S. M.
name: Duy, N. N.
name: Uyen, N. K.
name: Kim, D. H.
name: Pizzone, R. G.
name: La Cognata, M.
name: Cherubini, S.
name: Romano, S.
name: Tumino, A.
name: Liang, J.
name: Psaltis, A.
name: Sferrazza, M.
name: Kim, D.
name: Li, Y. Y.
name: Kubono, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report the first (in)elastic scattering measurement of $^{25}\mathrm{Al}+p$ with the capability to select and measure in a broad energy range the proton resonances in $^{26}$Si contributing to the $^{22}$Mg$(α,p)$ reaction at type I x-ray burst energies. We measured spin-parities of four resonances above the $α$ threshold of $^{26}$Si that are found to strongly impact the $^{22}$Mg$(α,p)$ rate. The new rate advances a state-of-the-art model to remarkably reproduce light curves of the GS 1826$-$24 clocked burster with mean deviation $<9$ % and permits us to discover a strong correlation between the He abundance in the accreting envelope of photospheric radius expansion burster and the dominance of $^{22}$Mg$(α,p)$ branch.
description: accepted by Physical Review Letters on 5 August 2021, published 19 October 2021
New Approach and Results on the Stability and Control of Airship
Creators: name: Acanfora, Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Il rinnovato interesse per l’utilizzo dei dirigibili ha evidenziato la necessità di sviluppare nuovi metodi e tecniche per valutarne le caratteristiche di stabilità ed il comportamento dinamico. Inizialmente è stato ricercato un metodo per analizzare la stabilità del dirigibile a partire dalle equazioni linearizzate del moto. E’ stato sviluppato il modello dinamico teorico per un piccolo dirigibile, l’AIUX15, e successivamente implementato in ambiente Matlab/Simulink per due diverse configurazioni di impennaggi d’interesse. Analisi ingegneristiche ed test preliminari condotti sul prototipo del dirigibile AIUX15 hanno evidenziato la significativa influenza degli impennaggi in termini di peso e assetto. Uno degli obiettivi perseguiti è stato lo sviluppo di diversi approcci di controllo in aria calma ed in turbolenza, con la finalità di controllare i moti oscillatori di rollio; tali oscillazioni rappresentano una fonte di disturbo per i sistemi di acquisizione dati che costituiscono il principale carico pagante di questa tipologia di dirigibili.  Infine è stato condotto uno studio preliminare per il calcolo delle derivative di stabilità del dirigibile mediante prove sperimentali nella vasca navale, basato sul metodo delle oscillazioni forzate.
Effective temperature and Gilbert damping of a current-driven localized spin
Creators: name: Nunez, A. S.
name: Duine, R. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Starting from a model that consists of a semiclassical spin coupled to two leads we present a microscopic derivation of the Langevin equation for the direction of the spin. For slowly-changing direction it takes on the form of the stochastic Landau-Lifschitz-Gilbert equation. We give expressions for the Gilbert damping parameter and the strength of the fluctuations, including their bias-voltage dependence. At nonzero bias-voltage the fluctuations and damping are not related by the fluctuation-dissipation theorem. We find, however, that in the low-frequency limit it is possible to introduce a voltage-dependent effective temperature that characterizes the fluctuations in the direction of the spin, and its transport-steady-state probability distribution function.
description: 8 pages, 2 figures. v2: published version
A CHEOPS White Dwarf Transit Search
Creators: name: Morris, Brett M.
name: Heng, Kevin
name: Brandeker, Alexis
name: Swan, Andrew
name: Lendl, Monika
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: White dwarf spectroscopy shows that nearly half of white dwarf atmospheres contain metals that must have been accreted from planetary material that survived the red giant phases of stellar evolution. We can use metal pollution in white dwarf atmospheres as flags, signalling recent accretion, in order to prioritize an efficient sample of white dwarfs to search for transiting material. We present a search for planetesimals orbiting six nearby white dwarfs with the CHEOPS spacecraft. The targets are relatively faint for CHEOPS, $11$ mag $< G < 12.8$ mag. We use aperture photometry data products from the CHEOPS mission as well as custom PSF photometry to search for periodic variations in flux due to transiting planetesimals. We detect no significant variations in flux that cannot be attributed to spacecraft systematics, despite reaching a photometric precision of $<2$ ppt in 60 s exposures on each target. We simulate observations to show that the small survey is sensitive primarily to Moon-sized transiting objects with periods $3$ hr $< P < 10$ hr, with radii $R \gtrsim 1000$ km.
description: 10 pages, accepted as a Letter to the Editor in A&A
Dayton House Kitchen
Creators: name: Falconer, John Mackie
Publisher: name: Unknown
Year: 0
Subjects: Chalk drawings
Charcoal drawings
Drawings
Pastels (Visual works)
Kitchens
Stoves
Fireplaces

description: This is a photographic copy of a pastel type drawing done by John Mackie Falconer in 1880 of the Stratton Dayton Kitchen located in East Hampton. This was collected sometime from 1970 to 1982 as part of the East Hampton’s Heritage Photo Collection.
description: Images within East Hampton Heritage Photo Collection seem to have been taken or collected in relation to the East Hampton Heritage project, but not all of them were included in the final publication. Several photographer are included in this collection.
An optical spectroscopic H-R diagram for low-mass stars and brown dwarfs in Orion
Creators: name: Riddick, F. C.
name: Roche, P. F.
name: Lucas, P. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The masses and temperatures of young low mass stars and brown dwarfs in star- forming regions are not yet well established because of uncertainties in the age of individual objects and the spectral type vs. temperature scale appropriate for objects with ages of only a few Myr. Using multi-object optical spectroscopy, 45 low-mass stars and brown dwarfs in the Trapezium Cluster in Orion have been classified and 44 of these confirmed as bona fide cluster members. The spectral types obtained have been converted to effective temperatures using a temperature scale intermediate between those of dwarfs and giants, which is suitable for young pre-main sequence objects. The objects have been placed on an H-R diagram overlaid with theoretical isochrones. The low mass stars and the higher mass substellar objects are found to be clustered around the 1 Myr isochrone, while many of the lower mass substellar objects are located well above this isochrone. An average age of 1 Myr is found for the majority of the objects. Assuming coevality of the sources and an average age of 1 Myr, the masses of the objects have been estimated and range from 0.018 to 0.44Msun. The spectra also allow an investigation of the surface gravity of the objects by measurement of the sodium doublet equivalent width. With one possible exception, all objects have low gravities, in line with young ages, and the Na indices for the Trapezium objects lie systematically below those of young stars and brown dwarfs in Chamaeleon, suggesting that the 820 nm Na index may provide a sensitive means of estimating ages in young clusters.
description: 19 pages, accepted by MNRAS
COVID-19's impact on Agile Software Development
Creators: name: Knoph, Eli
name: Ågren, Pernilla
Publisher: name: Zenodo
Year: 2021
Subjects: Agile Software Development
Agile Development
COVID-19
Master Thesis
Survey
Questionnaire
Chalmers

description: 'COVID-19's impact on Agile Software Development' is a Master Thesis conducted during the Spring 2021 at Chalmers University of Technology, Sweden. It will consist of a questionnaire with additional interviews. In this version of the Master Thesis you can find a link to the survey, and a pdf of how we handle and store the collected data from the questionnaire. ------------ The survey is up and running! If you are an agile software practitioner you are very welcome to fill out the survey and/or register your interest for an interview below. LINK TO SURVEY LINK TO REGISTRATION OF INTEREST FOR INTERVIEWS ------------ We will upload the result from the survey and interviews here at Zenodo in June 2021, look out for a newer version of this work by then. If you have any questions, please feel free to contact us at knoph@student.chalmers.se or agrenp@student.chalmers.se.
Adding Charges to N=4 Dyons
Creators: name: Banerjee, Nabamita
name: Jatkar, Dileep P.
name: Sen, Ashoke
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The spectrum of dyons in a class of N=4 supersymmetric string theories has been found for a specific set of electric and magnetic charge vectors. We extend the analysis to more general charge vectors by considering various charge carrying collective excitations of the original system.
description: LaTeX file, 16 pages
title: Generation of micro/nano metallic nanostructures using self-assembled monolayers as template and electrochemistry
Creators: name: She, Zhe
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2012

description: This thesis studies a scheme to fabricate small-scaled metal structures by electrochemical metal deposition and lift off. The key point is the use of self-assembled monolayers (SAMs) to control both interfacial charge transfer in electrodeposition and adhesion of the deposit to the substrate. Patterned SAMs exhibiting blocking and non-blocking areas are applied as templates in electrochemical deposition of Cu or Au. Thiol SAMs on Au substrates are used, namely alkane thiols and thiols combining an aliphatic chain with a biphenyl or biphenyl analogous pyridine-phenyl moieties. The patterning of SAMs is realised with microcontact printing (μCP) and electron beam lithography. Electrochemical deposition based on defects in the SAMs is optimised towards generating small nanostructures and depending on the system single or stepped potential procedures are applied. Generated metal structures are transferred to an insulator by lift off. Au microstructures (~10 μm) have been made with microcontact printing and transferred onto epoxy glue, which can potentially be used as microelectrodes in electroanalytical chemistry. Sub-100 nm Cu features and sub-40 nm Au features have been created with electron beam lithography respectively. Lift off process has successfully transferred Cu nanostructures onto epoxy glue with high precision. In contrast to the deposition mediated by defects, Cu deposition mediated by discharging Pd²⁺ coordinated to a pyridine terminated SAM directly through the SAM molecules has been explored as a new approach. This new approach has potential to decrease the size of the metal structure further and the preliminary results show possibility of sub-10 nm features. SAMs prepared with a newly synthesised molecule, 3-(4'-(methylthio)-[1,1'-biphenyl]-4-yl)propane-1-thiol, are characterised by STM, XPS and NEXAFS. The metal structures are investigated by SEM, AFM and STM.
Jamming transition in thermal and non-thermal systems
Creators: name: Pastore, Raffaele
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: The non-equilibrium transition from a fluid–like state to a disordered solid–like state, known as Jamming, occurs in a wide variety of physical systems as diverse as simple liquids, colloidal suspensions, molecular fluids, foams and granular material by varying the control parameters.
A part of my research work was devoted to the case of glass-former liquids. When a liquid is cooled fast enough avoiding crystallization, its relaxation time increases by many orders of magnitude, and overcomes any experimentally available time-scale: then we get a glass. The slowing down has been related to the presence of Dynamical Heterogeneities, i.e. clusters of particles dynamically correlated during time and over length, whose typical size grows on approaching the glassy phase. In this context, I have investigated via Monte Carlo simulations a popular glass former model.  I find that, contrary to current expectations,  the relaxation process and the dynamical heterogeneities are characterized by different time scales. This implies that they have a distinct physical origin. Indeed, I show that the relaxation time is related to a reverse percolation transition, whereas the time of maximum heterogeneity is related to the spatial correlation between particles, one can rationalized using theories for diffusing defects. This investigation leads to a geometrical interpretation of the relaxation process of glassy systems, and of the different observed time scales.
Another part of my work focuses on the Jamming of non-thermal systems. In particular, I have investigated the case of frictional Granular materials via molecular dynamics
simulations, reporting the existence of new rheological regimes, which are conveniently described in a jamming
phase diagram with axes density, shear stress, and friction coefficient. The resulting jammed states
are characterized by different mechanical and structural properties and appear not to be `fragile'
as speculated. In particular, I find  a regime, characterized by extremely long processes, with a
diverging timescale, whereby a suspension first flows but then suddenly jams. I have related this sudden jamming transition to the presence of impeded dilatancy.
Intense Mass Loss from C-rich AGB Stars at low Metallicity?
Creators: name: Mattsson, L.
name: Wahlin, R.
name: Höfner, S.
name: Eriksson, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We argue that the energy injection of pulsations may be of greater importance to the mass-loss rate of AGB stars than metallicity, and that the mass-loss trend with metallicity is not as simple as sometimes assumed. Using our detailed radiation hydrodynamical models that include dust formation, we illustrate the effects of pulsation energy on wind properties. We find that the mass-loss rate scales with the kinetic energy input by pulsations as long as a dust-saturated wind does not occur, and all other stellar parameters are kept constant. This includes the absolute abundance of condensible carbon (not bound in CO), which is more relevant than keeping the C/O-ratio constant when comparing stars of different metallicity. The pressure and temperature gradients in the atmospheres of stars, become steeper and flatter, respectively, when the metallicity is reduced, while the radius where the atmosphere becomes opaque is typically associated with a higher gas pressure. This effect can be compensated for by adjusting the velocity amplitude of the variable inner boundary (piston), which is used to simulate the effects of pulsation, to obtain models with comparable kinetic-energy input. Hence, it is more relevant to compare models with similar energy-injections than of similar velocity amplitude. Since there is no evidence for weaker pulsations in low-metallicity AGB stars, we conclude that it is unlikely that low-metallicity C-stars have a lower mass-loss rate, than their more metal-rich counterparts with similar stellar parameters, as long as they have a comparable amount of condensible carbon.
description: 4 pages, 3 figures. Accepted for publication in A&A. Updated after language editing. Additional typos fixed
Labena schausi Cushman 1922
Creators: name: Khalaim, Andrey
name: Ruiz-Cancino, Enrique
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Labena
Labena schausi

description: Labena schausi Cushman, 1922 Material examined. México, Tamaulipas, Gómez Farías, Los Cedros, Malaise trap, 20.III-12. VI.1999, coll. S. Hernández A., 4 ♀♀, 1 ♁. Cd. Victoria, Cañón del Novillo, 13.VIII.1985, coll. H. Serna T., 1 ♀. Yucatán, Corral (SMSC), June 1999, Hugo Delfin, 1 ♀. Distribution. Panama, Costa Rica, Guatemala, México (Tamaulipas, Yucatán).
description: Published as part of Khalaim, Andrey & Ruiz-Cancino, Enrique, 2009, Mexican species of Labena Cresson (Hymenoptera, Ichneumonidae) with description of a new species, pp. 65-74 in ZooKeys 5 (5) on page 72, DOI: 10.3897/zookeys.5.62, http://zenodo.org/record/576431
description: {"references": ["Cushman RA (1922) New species of Ichneumon-flies with taxonomic notes. Proceedings of the United States National Museum 60 (21): 1 - 28."]}
Pre-Holography
Creators: name: Kay, Bernard S.
name: Larkin, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct a symplectic isomorphism, h, from classical Klein Gordon solutions of mass m on (d+1)-dimensional Lorentzian Anti de Sitter space (equipped with the usual symplectic form) to a certain symplectic space of functions on its conformal boundary (only) for all integer and half-integer Delta (= d/2 + (1/2)(d^2 + 4m^2)^{1/2}). h induces a large family of new examples of Rehren's algebraic holography in which the net of local quantum Klein Gordon algebras in AdS is seen to map to a suitably defined net of local algebras for the (generalized free) scalar conformal field with anomalous dimension Delta on d-dimensional Minkowski space (the AdS boundary). Relatedly, we show for these models that Bertola et al's boundary-limit holography becomes a quantum duality (only) if the test functions for boundary Wightman distributions are restricted in a particular way.
description: 6 pages, 1 eps figure, revtex. v3: Improved figure. Error corrected in Endnote [14]; the new version of Endnote [14] points out the, in general, unusual "localization" of the boundary fields. Other minor improvements and clarifications. v3 to appear in Physical Review D (Rapid Communications)
Urotensina II:biomarcatore nel trattamento della disfunzione erettile
Creators: name: Barba, Ciro
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: il peptide urotensina II, isolato in diversi organi del genere umano, svolge un'azione vasodilatatrice endotelio dipendente, che vede coinvolto anche lo ione Calcio.
Nei corpi cavernosi dell'uomo è stato possibile riscontrare un'azione dell'urotensina II grazie al legame con un recettore specifico, legame che induce ad una vasodilatazione e quindi facilita l'afflusso di sangue penieno.
Topological Dipole Conserving Insulators and Multipolar Responses
Creators: name: May-Mann, Julian
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Higher order topological insulators (HOTIs) are a novel form of insulating quantum matter, which are characterized by having gapped boundaries that are separated by gapless corner or hinge states. Recently, it has been proposed that the essential features of a large class of HOTIs are captured by topological multipolar response theories. In this work, we show that these multipolar responses can be realized in interacting lattice models, which conserve both charge and dipole. In this work we study several models in both the strongly interacting and mean-field limits. In $2$D we consider a ring-exchange model which exhibits a quadrupole response, and can be tuned to a $C_4$ symmetric higher order topological phase with half-integer quadrupole moment, as well as half-integer corner charges. We then extend this model to develop an analytic description of adiabatic dipole pumping in an interacting lattice model. The quadrupole moment changes during this pumping process, and if the process is periodic, we show the total change in the quadrupole moment is quantized as an integer. We also consider two interacting $3$D lattice models with chiral hinge modes. We show that the chiral hinge modes are heralds of a recently proposed "dipolar Chern-Simons" response, which is related to the quadrupole response by dimensional reduction. Interestingly, we find that in the mean field limit, both the $2$D and $3$D interacting models we consider here are equivalent to known models of non-interacting HOTIs (or boundary obstructed versions). The self-consistent mean-field theory treatment provides insight into the connection between free-fermion (mean-field) theories having vanishing polarization and interacting models where dipole moments are microscopically conserved.
description: 28 pages, 16 figures
How trade affects the US produce industry: the case of fresh tomatoes
Creators: name: Li, Sheng
name: Wu, Feng
name: Guan, Zhengfei
name: Luo, Tianyuan
name: Li, Sheng
name: Wu, Feng
name: Guan, Zhengfei
name: Luo, Tianyuan
Publisher: name: Unknown
Year: 2021
Subjects: subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Mexican competition
subject: trade
subject: produce industry
subject: fresh tomatoes
subject: demand analysis

description: The US produce industry faces intensifying competition from imports, particularly those from Mexico, the largest exporter of produce to the United States. Fresh produce imports from Mexico have grown dramatically in recent years. This study examines the impact of increasing fresh tomato imports from Mexico on market price and revenue of US growers. Results show that tomato prices are highly sensitive to supply, suggesting a saturated market. Imports from Mexico have significant negative impacts on the prices of US domestic tomatoes. A scenario of 50% increase in tomato imports from Mexico could result in a $252 million (27%) revenue loss for American growers, thus posing great challenges to the sustainability of the declining US tomato industry.
Aerodynamic Shape Optimization with Physics-based Surrogate Models
Creators: name: Iuliano, Emiliano
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Aircraft design, as many other engineering applications, are increasingly relying on computational power. The growing need for multi-disciplinarity and high-fidelity in design optimization and industrial applications implies a huge number of repeated simulations to find an optimal design candidate. Indeed, a strong eﬀort has been done in the recent past to introduce potentially highly accurate analysis methods both in geometry and physics modelling. The main drawback is that they are computationally expensive. The solution of non-linear steady or unsteady aerodynamic flows by numerically solving the Navier-Stokes equations implies an amount of data storage, data handling and processor costs that may result very intensive even when implemented on modern state-of-art computing platforms. This turns out to be an even bigger issue when used within parametric studies, automated search or optimization loops which typically may require thousands analysis evaluations. The core issue of a design optimization problem is the search process of an optimal solution. However, when facing complex problems, the high-dimensionality of the design space and the high-multi-modality of the target functions cannot be tackled with standard techniques. Surrogate and reduced order modelling can provide a valuable alternative at a much lower computational cost. A global surrogate model is generally referred to as a low-cost model able to provide an approximation of a selected objective function over the whole design space. A reduced order model is a surrogate which is further able to capture and reproduce the physics embedded in the high-fidelity model by using a low-dimensional basis. Hence, a reduced order modelling of high-fidelity data (e.g. coming from accurate numerical solvers) with limited computational cost is a highly desirable feature. This is particularly true in CFD-based aerodynamic optimization. Commonly used RANS solvers are still time-consuming when complex fluid dynamics cases have to be faced, e.g. a wing-body aircraft configuration including engine and tail-planes. In this perspective, the present research aims at making a step towards bridging the gap between design stages through the coupling and exploitation of advanced analysis methods, reduced order/meta-modelling, optimization techniques and CAD-based tools towards the aero- dynamic design of innovative aircraft configurations with reasonable computational resources. The introduction of physics-based surrogate models will allow to correctly drive the design process since the very early stages and, hence, to refine the evaluation of potentially cost/environment saving concepts.
System-level fractionation of carbon from disk and planetesimal processing
Creators: name: Lichtenberg, Tim
name: Krijt, Sebastiaan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Finding and characterizing extrasolar Earth analogs will rely on interpretation of the planetary system's environmental context. The total budget and fractionation between C-H-O species sensitively affect the climatic and geodynamic state of terrestrial worlds, but their main delivery channels are poorly constrained. We connect numerical models of volatile chemistry and pebble coagulation in the circumstellar disk with the internal compositional evolution of planetesimals during the primary accretion phase. Our simulations demonstrate that disk chemistry and degassing from planetesimals operate on comparable timescales and can fractionate the relative abundances of major water and carbon carriers by orders of magnitude. As a result, individual planetary systems with significant planetesimal processing display increased correlation in the volatile budget of planetary building blocks relative to no internal heating. Planetesimal processing in a subset of systems increases the variance of volatile contents across planetary systems. Our simulations thus suggest that exoplanetary atmospheric compositions may provide constraints on $when$ a specific planet formed.
description: Accepted for publication in ApJL; 10 pages, 4 figures; summaries available at https://bit.ly/LichtenbergKrijt21blog (blog) and https://bit.ly/LichtenbergKrijt21video (video)
NJL with eight quark interactions: Chiral phases at finite T
Creators: name: Hiller, B.
name: Osipov, A. A.
name: Moreira, J.
name: Blin, A. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The thermodynamic potential and thermal dependence of low lying mass spectra of scalars and pseudoscalars are evaluated in a generalized Nambu -- Jona-Lasinio model, which incorporates eight-quark interactions. These are necessary to stabilize the scalar effective potential for the light and strange quark flavors, which would be otherwise unbounded from below. In addition it turns out that they are also crucial to i) lower the temperature of the chiral transition, in conformity with lattice calculations, ii) sharpen the temperature interval in which the crossover occurs, iii) or even allow for first order transitions to occur with realistic quark mass values, from certain critical values of the parameters. These are unprecedented results which cannot be obtained within the NJL approaches restricted to quartic and six-quark interactions.
description: 6 pages, 3 figures, Talk presented at SCADRON 70 Workshop on Scalar Mesons and Related Topics, Lisbon, 11-16 February 2008
Mitigation of Laser Beam Perturbations in the Virgo and Advanced-Virgo Gravitational Waves Detectors
Creators: name: Parisi, Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: The present work has been carried out in the framework of the interferometric detection of gravitational waves (GWs), specifically in the Virgo detector and in the Advanced Virgo (Adv-Virgo) project.
Adv-Virgo project is an overall improvement of the sensitivity for the Virgo antenna, a power recycled Michelson interferometer with 3 km arms length, located within the site of EGO, European Gravitational Observatory, based at Cascina (Pisa, Italy). The advanced detector will be dual recycled and will use high power laser in order to increase the signal-to-noise ratio (SNR).
The GWs are perturbations in the curvature of space-time propagating at speed of light.
Actually, research is focused on achieving direct detection of GWs but because of the weak nature of gravity only astronomical scale sources are likely to produce waves of sufficient amplitude to be detected on Earth. In the frequency band of a few Hz to a few kHz, the expected strain amplitude for violent sources is of the order of .
Virgo is near the design curve of sensitivity; in this condition the interferometer, to be limited by only the fundamental noises, must work in condition of extremely precision, especially in terms of alignments. For example, the fluctuations in position and direction of the laser beam (beam jitter) are a critical technical noise source that can limit the dark fringe sensitivity.
The first part of my PhD work has been addressed to model analytically the all chain of beam jitter noise propagation from the laser to the set requirements for various sub systems and propose new improvements and up-grade of the detector. Starting from the Virgo optical layout, it evaluated how the seismic vibrations of the optical injection system are propagated in the main interferometer and affect the dark-fringe carrying the GW signal. Moreover this study has contributed to set parameters and requirements to constrain a beam jitter noise to be compliant with Adv-Virgo sensitivity.
The second part of my PhD work, has been dedicated to the effects of thermal deformations of the Adv-Virgo injection optics caused by the use of high power laser (200W) and the non zero absorption coefficient of the optics. It follows a local heating of the optics and consequently a wavefront geometric deformation of the reflected and transmitted beams. In particular an active system to control and correct the wavefront distortions has been performed. The system proposed has been a deformable mirrors with an heater array used as possible actuators in order to compensate these thermal effects. The system has shown performances in terms of efficiency, checking the system stability, linearity and measurements repeatability.
Dynamical approach to chains of scatterers
Creators: name: Horvat, Martin
name: Prosen, Tomaz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Linear chains of quantum scatterers are studied in the process of lengthening, which is treated and analysed as a discrete dynamical system defined over the manifold of scattering matrices. Elementary properties of such dynamics relate the transport through the chain to the spectral properties of individual scatterers. For a single-scattering channel case some new light is shed on known transport properties of disordered and noisy chains, whereas translationally invariant case can be studied analytically in terms of a simple deterministic dynamical map. The many-channel case was studied numerically by examining the statistical properties of scatterers that correspond to a certain type of transport of the chain i.e. ballistic or (partially) localised.
description: 16 pages, 7 figures
KAM Theory for PDEs
Creators: name: Magistrelli, Elisa
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: This thesis is concerned with KAM theory for Hamiltonian partial differential equations. This theory answers to the following matter: since the solutions of a linear equation are periodic, quasi periodic or almost periodic (for they are superpositions of periodic motions), the problem is to investigate what happens when we add a (sufficiently) small nonlinearity.

This thesis contains two new results: an abstract KAM theorem for degenerate infinite--dimensional systems, with an application to the nonlinear wave equation, and a KAM theorem for a completely resonant nonlinear Schr\"odinger equation.
Nuovi marcatori nella diagnosi citologica dl nodulo tiroideo
Creators: name: Iaccarino, Antonino
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Questa Tesi ha  dimostrato:

L’efficacia di una nuova applicazione clinica delle Cicline tipo D nella diagnosi pre-operatoria del nodulo tiroideo; la valutazione della espressione di tali proteine può essere utile per distinguere in prima istanza, su campione pre-operatorio, le neoplasie a cellule di Hurtlhe maligne da quelle benigne senza ricorrere ad un intervento chirurgico diagnostico di lobectomia tiroidea.

La possibilità di includere UbcH10 come componente del panel immunocitochimico per la diagnosi citologica del nodulo tiroideo. Abbiamo dimostrato come l’espressione di questa proteina sia scarsamente rilevabile nei tessuti normali della tiroide, nei gozzi e negli adenomi, mentre è stato osservato un suo aumento di espressione in carcinomi papillari e follicolari tiroidei. Tale caratteristica biologica è particolarmente utile dal punto di vista diagnostico  utilizzando di UbcH10 come marker  molecolare da associare ad altri geni come  PCSK2 e CCND2 in analisi effettuate mediate qQRT-PCR.

La possibilità di includere CBX7 come componente del panel immunocitochimico per la diagnosi citologica del nodulo tiroideo. I risultati hanno evidenziato un progressivo decremento nella espressione di CBX7 con l’aumentare del grado di malignità e lo stadio patologico della neoplasia. Inoltre, tale decremento è riscontrabile in una percentuale di casi sempre maggiore dall’adenoma al carcinoma papillifero (PTC), follicolare ed anaplstico (ATC), suggerendo che esiste una significativa correlazione tra la perdita di espressione di CBX7 e malignità, correlazione utile per utilizzare CBX7 come marker di malignità su ago-aspirato.
Estimation of galactic model parameters in high latitudes with SDSS
Creators: name: Bilir, S.
name: Cabrera-Lavers, A.
name: Karaali, S.
name: Ak, S.
name: Yaz, E.
name: López-Corredoira
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We estimated the Galactic model parameters for a set of 36 high-latitude fields included in the currently available Data Release 5 (DR 5) of the Sloan Digital Sky Survey ({\em SDSS}), to explore their possible variation with the Galactic longitude. The thick disc scaleheight moves from $\sim$550 pc at $120^{\circ}
description: 18 pages, including 16 figures and 3 tables, accepted for publication in PASA
Accumulo e caratterizzazione del C organico nella lettiera e nel suolo minerale di pinete e faggete Mediterranee
Creators: name: Giordano, Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: In questo studio è stato valutato l’accumulo di C nel suolo sia come quantità totale che come forma labile (C solubile) e frazione attiva (biomassa e respirazione microbica), cercando di migliorare le conoscenze sul sequestro del C e sul turnover della sostanza organica. Le valutazioni realizzate negli strati organici (lettiera indecomposta e lettiera decomposta) e nel suolo minerale (fino a 40 cm di profondità) hanno interessato tre pinete (P. pinea) di differenti età (40, 70 e 100 anni) e due faggete (Fagus sylvatica), una dell’ Appennino Tosco-Emiliano e l’altra dell’ Appennino Campano.
Nello studio condotto nella cronosequenza di P. pinea del Monte Vesuvio, i risultati hanno evidenziato un maggiore accumulo di C negli strati organici e nello strato superficiale del suolo minerale della pineta più matura, in accordo con la maggiore produzione di lettiera di questa foresta rispetto a quelle più giovani. Negli strati più profondi del suolo minerale è la pineta con età intermedia a far registrare i valori più elevati. Le due faggete oggetto di studio non mostrano sempre differenze significative per la quantità di C accumulato nell’intero profilo. Tuttavia nello strato organico si osserva un maggiore accumulo di C nella faggeta di Parma mentre nel suolo minerale è maggiore l’accumulo nella faggeta di Laceno. I dati sono confermati da entrambi i campionamenti effettuati. Il contenuto di C cala significativamente dalla lettiera allo strato superficiale di suolo nella faggeta di Parma e si riduce lungo il profilo. Per la faggeta di Laceno lo strato di lettiera e lo strato più superficiale di suolo hanno valori di C simili ed il declino lungo il profilo è più graduale.