cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How (Not) to Palatini
Creators: name: Iglesias, Alberto
name: Kaloper, Nemanja
name: Padilla, Antonio
name: Park, Minjoon
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit the problem of defining non-minimal gravity in the first order formalism. Specializing to scalar-tensor theories, which may be disguised as `higher-derivative' models with the gravitational Lagrangians that depend only on the Ricci scalar, we show how to recast these theories as Palatini-like gravities. The correct formulation utilizes the Lagrange multiplier method, which preserves the canonical structure of the theory, and yields the conventional metric scalar-tensor gravity. We explain the discrepancies between the naïve Palatini and the Lagrange multiplier approach, showing that the naïve Palatini approach really swaps the theory for another. The differences disappear only in the limit of ordinary General Relativity, where an accidental redundancy ensures that the naïve Palatini works there. We outline the correct decoupling limits and the strong coupling regimes. As a corollary we find that the so-called `Modified Source Gravity' models suffer from strong coupling problems at very low scales, and hence cannot be a realistic approximation of our universe. We also comment on a method to decouple the extra scalar using the chameleon mechanism.
description: 18 pages, LaTeX; added references and minor improvements in sec 4
Multi-wavelength Observations of a Metric Type-II Event
Creators: name: Alissandrakis, C. E.
name: Nindos, A.
name: Patsourakos, S.
name: Hillaris, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have studied a complex metric radio event which originated in a compact flare, observed with the ARTEMIS-JLS radiospectro-graph on February 12, 2010. The event was associated with a surge observed at 195 and 304 Å and with a coronal mass ejection observed by instruments on-board STEREO A and B near the East and West limbs respectively. On the disk the event was observed at 10 frequencies by the Nancay Radioheliograph, in Ha by the Catania observatory, in soft x-rays by GOES SXI and Hinode XRT and in hard x-rays by RHESSI. We combined these data, together with MDI longitudinal magnetograms, to get as complete a picture of the event as possible. Our emphasis is on two type-II bursts that occurred near respective maxima in the GOES light curves. The first, associated with the main peak of the event, showed an impressive F-H structure, while the emission of the second consisted of three well-separated bands with superposed pulsations. Using positional information for the type-IIs from the NRH and triangulation from STEREO A and B, we found that the type IIs were associated neither with the surge nor with the disruption of a nearby streamer, but rather with an EUV wave probably initiated by the surge. The fundamental-harmonic structure of the first type II showed a band split corresponding to a magnetic field strength of 18G, a frequency ratio of 1.95 and a delay of 0.23-0.65s of the fundamental with respect to the harmonic; moreover it became stationary shortly after its start and then drifted again. The pulsations superposed on the second type II were broadband and had started before the burst. In addition, we detected another pulsating source, also before the second type II, polarized in the opposite sense; the pulsations in the two sources were out of phase and hence hardly detectable in the dynamic spectrum. The pulsations had a measurable reverse frequency drift of about 2/s.
description: Accepted for Publication in A&A, Article Number: aa41672-21
Constraints on the IR behavior of the ghost propagator in Yang-Mills theories
Creators: name: Cucchieri, Attilio
name: Mendes, Tereza
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present rigorous upper and lower bounds for the momentum-space ghost propagator G(p) of Yang-Mills theories in terms of the smallest nonzero eigenvalue (and of the corresponding eigenvector) of the Faddeev-Popov matrix. We apply our analysis to data from simulations of SU(2) lattice gauge theory in Landau gauge, using the largest lattice sizes to date. Our results suggest that, in three and in four space-time dimensions, the Landau-gauge ghost propagator is not enhanced as compared to its tree-level behavior. This is also seen in plots and fits of the ghost dressing function. In the two dimensional case, on the other hand, we find that G(p) diverges as p^{-2-2 kappa} with kappa \approx 0.15, in agreement with Ref. [1]. We note that our discussion is general, although we make an application only to pure gauge theory in Landau gauge. Most of our simulations have been performed on the IBM supercomputer at the University of Sao Paulo.
description: 6 pages, 5 tables, 2 figures (6 plots); added plots and fits of the ghost dressing function
HeII Reionization and its Effect on the IGM
Creators: name: McQuinn, Matthew
name: Lidz, Adam
name: Zaldarriaga, Matias
name: Hernquist, Lars
name: Hopkins, Philip F.
name: Dutta, Suvendra
name: Faucher-Giguere, C. -A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of the intergalactic medium (IGM) suggest that quasars reionize HeII in the IGM at z ~ 3. We have run a set of 190 and 430 comoving Mpc simulations of HeII being reionized by quasars to develop an understanding of the nature of HeII reionization and its potential impact on observables. We find that HeII reionization heats regions in the IGM by as much as 25,000 K above the temperature that is expected otherwise, with the volume-averaged temperature increasing by ~ 12,000 K and with large temperature fluctuations on ~ 50 Mpc scales. Much of the heating occurs far from QSOs by hard photons. We find a temperature-density equation of state of gamma -1 ~ 0.3 during HeII reionization, but with a wide dispersion in this relation having sigma ~ 10^4 K. HeII reionization by the observed population of quasars cannot produce an inverted relation (gamma - 1 < 0). Our simulations are consistent with the observed evolution in the mean transmission of the HeII Ly-alpha forest. We argue that the heat input due to HeII reionization is unable to cause the observed depression at z = 3.2 in the HI Ly-alpha forest opacity as has been suggested. We investigate how uncertainties in the properties of QSOs and of HeII Lyman-limit systems influence our predictions.
description: 19 pages, 15 figures, plus 9 pages of Appendix. accepted by ApJ
Cortado---An Interactive Tool for Data-Driven Process Discovery and Modeling
Creators: name: Schuster, Daniel
name: van Zelst, Sebastiaan J.
name: van der Aalst, Wil M. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Process mining aims to diagnose and improve operational processes. Process mining techniques allow analyzing the event data generated and recorded during the execution of (business) processes to gain valuable insights. Process discovery is a key discipline in process mining that comprises the discovery of process models on the basis of the recorded event data. Most process discovery algorithms work in a fully automated fashion. Apart from adjusting their configuration parameters, conventional process discovery algorithms offer limited to no user interaction, i.e., we either edit the discovered process model by hand or change the algorithm's input by, for instance, filtering the event data. However, recent work indicates that the integration of domain knowledge in (semi-)automated process discovery algorithms often enhances the quality of the process models discovered. Therefore, this paper introduces Cortado, a novel process discovery tool that leverages domain knowledge while incrementally discovering a process model from given event data. Starting from an initial process model, Cortado enables the user to incrementally add new process behavior to the process model under construction in a visual and intuitive manner. As such, Cortado unifies the world of manual process modeling with that of automated process discovery.
The soft-energy region in the radiative decay of bound states
Creators: name: Ruiz-Femenia, Pedro D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The orthopositronium decay to three photons is studied in the phase-space region where one of the photons has an energy comparable to the relative three-momentum of the e+e- system (w ~ m alpha). The NRQED computation in this regime shows that the dominant contribution arises from distances ~ 1/(mw)^(1/2), which allows to treat the Coulomb interaction perturbatively. The small-photon energy expansion of the 1-loop decay spectrum from full QED yields the same result as the effective theory. By doing the threshold expansion of the 1-loop QED amplitude we confirm that the leading term arises from a loop-momentum region where q^0 ~ q^2/m ~ w. This corresponds to a new non-relativistic loop-momentum region, which has to be taken into account for the description of a non-relativistic particle-antiparticle system that decays through soft photon emission.
description: 28 pages, 5 figures; typos corrected, one reference added, published version
On the effective exploitation of distributed information for cooperative network security and routing optimization
Creators: name: Oliviero, Francesco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: The wide deployment of more and more sophisticated services and application over Internet imposes to careful project solutions for face the threats that this spreading involved. Unfortunately, the computer networks were de-
signed neglecting the problem of security, since they ware thinking as \open systems" where anyone could use them as it liked, and malicious users was not considered.
The lack of security requires to study alternative solutions that integrate the existing network technologies. The interest in computer network security is growing in the last year and new ideas have been proposed.
In this thesis we present a cooperative approach to network security. By sharing information about evidence of anomalous user's activities it is possible to improve the e®ectiveness of the overall system by a careful prevention
and detection of attacks. In this way the cooperation is able to overcome the intrinsic design limits of existing computer networks. By analyzing several collaborative systems, we de ne a general framework for the design and implementation of a reliable cooperative solution.
Based on this framework, we implement two systems that share common project's principles: a cooperative DoS detection system and a new secure routing protocol for wireless networks.
The results prove the goodness of design and the capability of framework proposed to be extended to several problems of network security.
Data management plans
Creators: name: Smaele, Madeleine De
name: Velden, Yasemin Turkyilmaz-Van Der
Publisher: name: Zenodo
Year: 2019
Subjects: Research Data Management
Data stewardship
Data Management Plan
DMPonline
TU Delft Research Data Framework

description: These are slides the slides of the presentation on Data Management Plans given by Madeleine de Smaele and Yasemin Türkyilmaz-van der Velden during the 2nd ARMA-NL Meeting on 17 June 2019. The following topics are covered in this presentation:

	Research Data Management Support and Data Stewardship at TU Delft
	DMPonline demonstration
	A closer look to Data Management Plans
	TU Delft Research Data Framework
Piana Campana: geomorfologia e armatura urbana
Creators: name: Sibilio, Paolo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La tesi analizza i principi insediativi antropici della Piana Campana usando quale strumento la lettura delle cartografie e iconografie antiche in rapporto alla struttura geomorfologica dell’area in esame, ricostruendo una storia del territorio campano. La crescita e l’evoluzione dell’armatura urbana condizionata, oltre che dalle trasformazioni sociali, dalla evoluzione morfologica e dalla connotazione geotettonica.
Stray-fields-based magnetoresistance mechanism in Ni80Fe20-Nb-Ni80Fe20 trilayers
Creators: name: Stamopoulos, D.
name: Manios, E.
name: Pissas, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the transport and magnetic properties of hybrid trilayers and bilayers that consist of low spin-polarized Ni80Fe20 exhibiting in-plane but no uniaxial anisotropy and low-Tc Nb. We reveal a magnetoresistance effect that is pronounced. In our trilayers the magnetoresistance exhibits an increase of two orders of magnitude when the superconducting state is reached: from the conventional normal-state values 0.6 % it goes up to 1000 % for temperatures below Tc. In contrast, in the bilayers the effect is only minor since from 3% in the normal state increases only to 70 % for temperatures below Tc. Magnetization data of both the longitudinal and transverse magnetic components are presented. Most importantly, we present data not only for the normal state of Nb but also in its superconducting state. Strikingly, these data show that below its Tc SC the Nb interlayer under the influence of the outer Ni80Fe20 layers attains a magnetization component transverse to the external field. By comparing the transport and magnetization data we propose a candidate mechanism that could motivate the pronounced magnetoresistance effect observed in the trilayers. Adequate magnetostatic coupling of the outer Ni80Fe20 layers is motivated by stray fields that emerge naturally in their whole surface due to the multidomain magnetic structure that they attain near coercivity. Atomic force microscopy is employed in order to examine the possibility that such magnetostatic coupling could be promoted by interface roughness. Referring to the bilayers, although out-of-plane rotation of the magnetization of the single Ni80Fe20 layer is still observed, in these structures magnetostatic coupling does not occur due to the absence of a second Ni80Fe20 one so that the observed magnetoresistance peaks are only modest.
description: 9 pages, 7 figures
Sistemi di gestione informatizzata integrata dei dati archeologici. Protocolli operativi, Quality Management, processi di trasferimento tecnologico. Linee di intervento presso l’Heraion alla Foce del Sele e il sito di Cuma.
Creators: name: Cantone, Francesca
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La genesi di questo lavoro si inserisce nel filone di ricerca e approfondimento dell’ampio ed articolato spettro di innovazioni metodologiche in archeologia che nella letteratura scientifica sono definite con denominazioni varie: Archeoinformatica, Informatica Archeologica, Archeologia Computazionale, Archeologia Digitale, Archeologia Virtuale.
Tali espressioni fanno riferimento a linee di indagine che vanno assumendo una sempre maggiore specificità, pur nell’articolazione e ricchezza interna delle applicazioni.
In particolare il piano di ricerca elaborato è stato finalizzato alla sperimentazione di protocolli operativi per la gestione di dati archeologici e per il controllo e miglioramento qualitativo del flusso di lavoro (workflow) della prassi archeologica.
In tal senso le metodologie e le strumentazioni informatiche elaborate, testate, acquisite, messe a punto, personalizzate, sono state intese e finalizzate ad un arricchimento metodologico piuttosto che come un mero supporto strumentale.
Partendo da tale cornice metodologica si è impostata una ricerca finalizzata alla elaborazione di protocolli di gestione di dati archeologici il più possibile standardizzati, user-friendly, flessibili, efficienti, modulari, fruibili on line.
Gli scavi archeologici condotti dal Dipartimento di Discipline Storiche E. Lepore dell’Università degli Studi di Napoli hanno costituito l’oggetto principale delle sperimentazioni metodologiche affrontate.
In particolare sono oggetto della ricerca le problematiche specifiche di gestione, archiviazione, interpretazione degli interventi presso i siti archeologici dell’Heraion alla Foce del Sele e di Cuma .
Appendix A Search Strategy Medline Ovid
Creators: name: Sattelmayer, Martin
Publisher: name: figshare
Year: 2021
Subjects: subject: 110321 Rehabilitation and Therapy (excl. Physiotherapy)
subject: FOS: Clinical medicine
subject: 110317 Physiotherapy

description: File containing the search terms used to search for relevant records in Medline (OVID)
Fast Conversion Algorithms for Orthogonal Polynomials
Creators: name: Bostan, Alin
name: Salvy, Bruno
name: Schost, Éric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: We discuss efficient conversion algorithms for orthogonal polynomials. We describe a known conversion algorithm from an arbitrary orthogonal basis to the monomial basis, and deduce a new algorithm of the same complexity for the converse operation.
Observations with the Differential Speckle Survey Instrument. X. Preliminary Orbits of K Dwarf Binaries and Other Stars
Creators: name: Horch, Elliott P.
name: Broderick, Kyle G.
name: Casetti-Dinescu, Dana I.
name: Henry, Todd J.
name: Fekel, Francis C.
name: Muterspaugh, Matthew W.
name: Willmarth, Daryl W.
name: Winters, Jennifer G.
name: van Belle, Gerard T.
name: Clark, Catherine A.
name: Everett, Mark E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This paper details speckle observations of binary stars taken at the Lowell Discovery Telescope, the WIYN Telescope, and the Gemini telescopes between 2016 January and 2019 September. The observations taken at Gemini and Lowell were done with the Differential Speckle Survey Instrument (DSSI), and those done at WIYN were taken with the successor instrument to DSSI at that site, the NN-EXPLORE Exoplanet Star and Speckle Imager (NESSI). In total, we present 378 observations of 178 systems and we show that the uncertainty in the measurement precision for the combined data set is ~2 mas in separation, ~1-2 degrees in position angle depending on the separation, and $\sim$0.1 magnitudes in magnitude difference. Together with data already in the literature, these new results permit 25 visual orbits and one spectroscopic-visual orbit to be calculated for the first time. In the case of the spectroscopic-visual analysis, which is done on the trinary star HD 173093, we calculate masses with precision of better than 1% for all three stars in that system. Twenty-one of the visual orbits calculated have a K dwarf as the primary star; we add these to the known orbits of K dwarf primary stars and discuss the basic orbital properties of these stars at this stage. Although incomplete, the data that exist so far indicate that binaries with K dwarf primaries tend not to have low-eccentricity orbits at separations of one to a few tens of AU, that is, on solar-system scales.
Opportunities for Neutrino Physics at the Spallation Neutron Source (SNS)
Creators: name: Efremenko, Yu
name: Hix, W R
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this paper we discuss opportunities for a neutrino program at the Spallation Neutrons Source (SNS) being commissioning at ORNL. Possible investigations can include study of neutrino-nuclear cross sections in the energy rage important for supernova dynamics and neutrino nucleosynthesis, search for neutrino-nucleus coherent scattering, and various tests of the standard model of electro-weak interactions.
description: Paper submitted for the 2008 Carolina International Symposium on Neutrino Physics
Strongly Interacting Low Viscosity Matter Created in Heavy Ion Collisions
Creators: name: Kapusta, Joseph I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Substantial collective flow is observed in collisions between large nuclei at high energy, as evidenced by single-particle transverse momentum distributions and by azimuthal correlations among the produced particles. The data are well-reproduced by perfect fluid dynamics. In a separate development, calculation of the dimensionless ratio of shear viscosity eta to entropy density s by Kovtun, Son and Starinets within AdS/CFT yields eta/s = 1/4pi, and they conjectured that this is a lower bound for any physical system. It is shown that the transition from hadrons to quarks and gluons has behavior similar to helium, nitrogen, and water at and near their phase transitions in the ratio eta/s. Therefore it is possible that experimental measurements can pinpoint the location of this transition or rapid crossover in QCD via the viscosity to entropy ratio in addition to and independently of the equation of state.
description: Plenary talk at Quark Matter 2006 in Shanghai
Global Properties of the Globular Cluster Systems of Four Spiral Galaxies
Creators: name: Rhode, Katherine L.
name: Zepf, Stephen E.
name: Kundu, Arunav
name: Larner, Aaron N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results from a wide-field imaging study of the globular cluster (GC) systems of a sample of edge-on, Sb-Sc spiral galaxies ~7-20 Mpc away. This study is part of a larger survey of the ensemble properties of the GC populations of giant galaxies. We imaged the galaxies in BVR filters with large-format CCD detectors on the WIYN 3.5-m telescope, to projected radii of ~20-40 kpc. For four galaxies (NGC 2683, NGC 3556, NGC 4157, and NGC 7331), we quantify the radial distributions of the GC systems and estimate the total number, luminosity- and mass-normalized specific frequencies (S_N and T), and blue (metal-poor) fraction of GCs. A fifth galaxy (NGC 3044) was apparently too distant for us to have detected its GC system. Our S_N for NGC 2683 is 2.5 times smaller than the previously-published value, likely due in part to reduced contamination from non-GCs. For the spiral galaxies analyzed for the survey to date, the average number of GCs is 170+/-40 and the weighted mean values of S_N and T are 0.8+/-0.2 and 1.4+/-0.3. We use the survey data to derive a relationship between radial exent of the GC system and host galaxy mass over a factor of 20 in mass. Finally, we confirm the trend, identified in previous survey papers, of increasing specific frequency of metal-poor GCs with increasing galaxy mass. We compare the data with predictions from a simple model and show that carefully quantifying the numbers of metal-poor GCs in galaxies can constrain the formation redshifts of the GCs and their host galaxies.
description: 30 pages, including 14 figures and 13 tables; accepted for publication in The Astronomical Journal, Oct 2007 issue
Stability of a Rolled-Up Conformation State for Two-Dimensional Materials in Aqueous Solutions
Creators: name: Trushin, Maxim
name: Neto, A. H. Castro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional (2D) materials can roll up, forming stable scrolls under suitable conditions. However, the great diversity of materials and fabrication techniques has resulted in a huge parameter space significantly complicating the theoretical description of scrolls. In this Letter, we describe a universal binding energy of scrolls determined solely by their material parameters, the bending stiffness, and the Hamaker coefficient. Aiming to predict the stability of functionalized scrolls in water solutions, we consider the electrostatic double-layer repulsion force that may overcome the binding energy and flatten the scrolls. Our predictions are represented as comprehensive maps indicating the stable and unstable regions of a rolled-up conformation state in the space of material and external parameters. While focusing mostly on functionalized graphene in this work, our approach is applicable to the whole range of 2D materials able to form scrolls.
description: The main text is as published in PRL with the supplemental material added
Preservation of Positivity by Dynamical Coarse-Graining
Creators: name: Schaller, Gernot
name: Brandes, Tobias
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We compare different quantum Master equations for the time evolution of the reduced density matrix. The widely applied secular approximation (rotating wave approximation) applied in combination with the Born-Markov approximation generates a Lindblad type master equation ensuring for completely positive and stable evolution and is typically well applicable for optical baths. For phonon baths however, the secular approximation is expected to be invalid. The usual Markovian master equation does not generally preserve positivity of the density matrix. As a solution we propose a coarse-graining approach with a dynamically adapted coarse graining time scale. For some simple examples we demonstrate that this preserves the accuracy of the integro-differential Born equation. For large times we analytically show that the secular approximation master equation is recovered. The method can in principle be extended to systems with a dynamically changing system Hamiltonian, which is of special interest for adiabatic quantum computation. We give some numerical examples for the spin-boson model of cases where a spin system thermalizes rapidly, and other examples where thermalization is not reached.
description: 18 pages, 7 figures, reviewers suggestions included and tightened presentation; accepted for publication in PRA
title:  Sulla dominanza fiscale e monetaria: un’analisi Markov-switching per l’Italia
Creators: name: Ionta ,  Serena
name: Giuli, Francesco
Publisher: name: RomaTrE-Press
Year: 2023

description: This article constructs an empirical Markov-switching narrative for the history of Italian economic policy, focusing on the interaction between fiscal and monetary policy from 1964 to 2021. Estimates of fiscal and monetary policy rules reveal frequent regime shifts. The 1990s were a significant turning point for fiscal policy, as the 1980s were for monetary policy with the transition from de facto to de jure monetary independence. Regarding coordination, the study shows that when monetary policy is active, fiscal policy tends to be passive and vice versa. This indicates an alternation in the stabilisation of debt dynamics between fiscal policy and monetary policy as suggested by the Fiscal Theory of Price Level.
description: Giornate della Ricerca del Dipartimento di Economia di Roma Tre
Architettura contemporanea in Sicilia: sul disegno
Creators: name: De Simone, Raffaella
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: L’oggetto della ricerca è il disegno concepito come testo, attraverso cui rileggere ed osservare l’architettura, circoscrivendo l’osservazione ad uno specifico campo di applicazione, coincidente nella nostra ricerca con i confini geografici della Sicilia.
La ricerca si avvale della formulazione di elenchi  e della loro combinazione. Si mette a punto  un metodo di lavoro strutturato tramite la selezione del materiale, ordinato attraverso la compilazione selettiva degli elenchi. In questa struttura, si è collocato il lavoro producendo un’osservazione critica del disegno, quale strumento specifico dell’architettura.
Si è scelto di lavorare all’architettura contemporanea e, per questo, è stata individuata una soglia temporale che a partire dal 1968 arriva ai nostri giorni.
Lo studio individua così,  in questi anni, nuovi luoghi di sperimentazione (concorsi, laboratori di progettazione, pubblicazioni), che riguardano condizioni di lavoro collettive e che rispondono a proposte di temi specifici; ciò consente di assumerli come luoghi dell’osservazione cioè delle costanti a partire dalle quali è possibile costruire un sistema di confronti e riflessioni.
Supplementary information from Resilience of cold-water coral holobionts to thermal stress
Creators: name: Chapron, Leila
name: Galand, Pierre E.
name: Pruski, Audrey M.
name: Peru, Erwan
name: Vétion, Gilles
name: Robin, Sarah
name: Lartaud, Franck
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Environmental Science

description: The supplementary information document contains supplementary figures, tables and supplementary materials and methods
“Nuove prospettive molecolari nella diagnosi  citologica preoperatoria del nodulo tiroideo”
Creators: name: Caleo, Alessia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Lo studio si basa sull'applicazione di metodiche di biologia molecolare a campioni citologici di neoplasie tiroidee al fine di valutare l'ausilio diagnostico dell'analisi di alcuni oncogeni coinvolti nella cancerogenesi tiroidea.
Location-Routing models and methods for Freight Distribution and Infomobility in City Logistics
Creators: name: Sterle, Claudio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: In this thesis two City Logistics problems have been tackled. The first is a design problem for a two-echelon freight distribution system. The aim is to define the structure of a system optimizing the location and the number of two different kinds of facilities, the size of two different vehicle fleets and the related routes on each echelon. The problem has been modeled as a two-echelon location-routing problem (2E-LRP). It is NP-hard and the results obtained with the proposed models, in terms of quality of solution and computation time, confirmed the need of approaching it with a heuristic method. To this aim a Tabu Search heuristic has been proposed and implemented. It is based on the decomposition of the whole problem in four subproblems, one FLP and one VRP for each echelon. The four sub-problems are sequentially and iteratively solved and their solutions are opportunely combined in order to determine a good global solution. Tabu Search has been experienced on three set instances. Experimental results prove that the proposed TS is effective in terms of quality of solutions and computation times in the most of the solved instances. The second problem concerns the location of flow intercepting facilities (FIFLP). Differently to what happens in classical location problems, in this case facilities do not generate and/or attract flows, but they intercept flows traveling on the network. The aim is to define the locations of the facilities which optimize a performance criterion related to the flow values on each path. This is a path-covering problem which finds many applications in City Logistics. Four problems of flow intercepting facility location have been treated with several models and methods, some of them present in literature and other proposed by us. An extensive computational experimentation of them has been carried out in terms of quality of solutions and computation times. FIFLP models have been successfully applied to transportation and communication networks.
A novel large-volume Spherical Detector with Proportional Amplification read-out
Creators: name: Giomataris, I.
name: Irastorza, I.
name: Savvidis, I.
name: Andriamonje, S.
name: Aune, S.
name: Chapelier, M.
name: Charvin, Ph.
name: Colas, P.
name: Derre, J.
name: Ferrer, E.
name: Gros, M.
name: Navick, X. F.
name: Salin, P.
name: Vergados, J. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A new type of radiation detector based on a spherical geometry is presented. The detector consists of a large spherical gas volume with a central electrode forming a radial electric field. Charges deposited in the conversion volume drift to the central sensor where they are amplified and collected. We introduce a small spherical sensor located at the center acting as a proportional amplification structure. It allows high gas gains to be reached and operates in a wide range of gas pressures. Signal development and the absolute amplitude of the response are consistent with predictions. Sub-keV energy threshold with good energy resolution is achieved. This new concept has been proven to operate in a simple and robust way and allows reading large volumes with a single read-out channel. The detector performance presently achieved is already close to fulfill the demands of many challenging projects from low energy neutrino physics to dark matter detection with applications in neutron, alpha and gamma spectroscopy.
description: 13 pages, 13 figures
Scanning Probe Techniques for the Characterization of Electronic Properties of Transition Metal Oxide Surfaces and Interfaces
Creators: name: Ristic, Zoran
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Scanning tunneling spectroscopy has been a window into the (sub)atomic world for more than two decades now, but the wealth of information that this technique offers seem yet to be exploited to it's maximum. In this thesis it is tried to optimize STM and, more precisely, STS techniques for the investigation of transition metal oxides, especially ones that exhibit interesting correlated structural and electronic phenomena like Pr$_{1-x}$Ca$_{x}$MnO$_{3}$ and  LaAlO$_{3}$/SrTiO$_{3}$ system; the first is an insulator characterized by intriguing magnetic and charge-ordered phases, and the second is unique example of 2D electron gas, confined to the buried interface between two band-insulators. To this purpose, different numerical methods are proposed, which greatly help the handling of the data obtained in STS measurements. This approach allowed to determine important correlations between structural and electronic properties of the TMO surfaces/interfaces
A study of the National Trust's inclusion in and use of the World Wide Web: including the feasibility of extending this use to further promote their individual properties
Creators: name: Westhead, Michael H.
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: A study of the National Trust's inclusion in and use of the World Wide Web: including the feasibility of extending this use to further promote their individual properties
Revisiting the post-glitch relaxation of the 2000 Vela glitch with the neutron star equation of states in the Brueckner and relativistic Brueckner theories
Creators: name: Shang, Xinle
name: Li, Ang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We revisit the short-term post-glitch relaxation of the Vela 2000 glitch in the simple two-component model of pulsar glitch by making use of the latest realistic equations of states from the microscopic Brueckner and the relativistic Brueckner theories for neutron stars, which can reconcile with the available astrophysical constraints. We show that to fit both the glitch size and the post-glitch jumps in frequency derivatives approximately one minute after the glitch, the mass of the Vela pulsar is necessarily small, and there may be demands for a stiff equation of state (which results in a typical stellar radius larger than $\sim\negthickspace12.5\,\rm km$) and a strong suppression of the pairing gap in the nuclear medium. We discuss the implications of this result on the understanding of pulsar glitches.
description: 13 pages, 5 figures, 1 table, version accepted for publication in ApJ
Key elements to achieve FAIR outcomes in international multi-disciplinary groups
Creators: name: Specht, A.
Publisher: name: Zenodo
Year: 2021
Subjects: environmental science
earth science
FAIR
multi-disciplinary
international
data workflow

description: This presentation is part of a webinar sponsored by the Research Data Alliance as an outcome of the International Network of Networks meeting in Philadelphia in 2019, funded by the National Science Foundation. The webinar had five speakers, Bob Downs (Center for International Earth Science Information Network (CIESIN), USA), Stephanie Hagstrom (CBS International Business School, Cologne, Germany), Kathleen Shearer (Confederation of Open Access Repositories, Canada) and the author of this presentation, Alison Specht. The full seminar can be viewed here. Global data communities are primed for considerable progress in accelerating discovery and advancing research through open science. However, navigating data sharing in the context of international collaborations can be extremely complex and very challenging. The International Network-of-Networks (iN2N) Data Expert Workshop1 was convened to address the social and technical challenges in making data shareable and interoperable internationally. The workshop brought together a multidisciplinary group of experts to identify the biggest challenges related to data sharing in international scientific collaborations and to identify solutions to address these issues. Based on the meeting discussions, a high-level framework was developed with the aim of helping to guide international research projects in dealing with research data management and sharing. This talk focusses on the author's experience with multi-disciplinary and transnational Environmental and Earth Science working groups, discussing key elements that help these groups be productive, and that motivate most of the members. Using that knowledge, a metaphor is used to track useful steps that will achieve a FAIR outcome from such groups, culminating in a version of the PARSEC group checklist for good data practice and transparent communication.
On the Newtonian origin of the spin motive force in ferromagnetic atomic wires
Creators: name: Stamenova, Maria
name: Todorov, Tchavdar N.
name: Sanvito, Stefano
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate numerically the existence of a spin-motive force acting on spin-carriers when moving in a time and space dependent internal field. This is the case of electrons in a one-dimensional wires with a precessing domain wall. The effect can be explained solely by considering adiabatic dynamics and it is shown to exist for both classical and quantum systems.
description: 5 pages, 7 figures, added figure 7 and text
X-ray emissions from two-temperature accretion flows within a dipole magnetic funnel
Creators: name: Saxton, Curtis J.
name: Wu, Kinwah
name: Canalle, Joao. B. G.
name: Cropper, Mark
name: Ramsay, Gavin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the hydrodynamics of accretion channelled by a dipolar magnetic field (funnel flows). We consider situations in which the electrons and ions in the flow cannot maintain thermal equilibrium (two-temperature effects) due to strong radiative loss, and determine the effects on the keV X-ray properties of the systems. We apply this model to investigate the accretion shocks of white dwarfs in magnetic cataclysmic variables. We have found that the incorporation of two-temperature effects could harden the keV X-rays. Also, the dipolar model yields harder X-ray spectra than the standard planar model if white dwarf is sufficiently massive (>~1M_sun). When fitting observed keV X-ray spectra of magnetic cataclysmic variables, the inclusion of two-temperature hydrodynamics and a dipolar accretion geometry lowers estimates for white-dwarf masses when compared with masses inferred from models excluding these effects. We find mass reductions
description: MNRAS accepted; 13 pages, 10 figures, 2 tables
The VLA 1.4GHz Survey of the Extended Chandra Deep Field South: First Data Release
Creators: name: Miller, Neal A.
name: Fomalont, E. B.
name: Kellermann, K. I.
name: Mainieri, V.
name: Norman, C.
name: Padovani, P.
name: Rosati, P.
name: Tozzi, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed the Extended Chandra Deep Field South (E-CDF-S) using a mosaic of six deep Very Large Array (VLA) pointings at 1.4GHz. In this paper, we present the survey strategy, description of the observations, and the first data release. The observations were performed during June through September of 2007 and included from 15 to 17 ``classic'' VLA antennas and 6 to 11 that had been retrofitted for the Expanded VLA (EVLA). The first data release consists of a 34.1' x 34.1' image and the attendant source catalog. The image achieves an rms sensitivity of 6.4 uJy per 2.8" x 1.6" beam in its deepest regions, with a typical sensitivity of 8 uJy. The catalog is conservative in that it only lists sources with peak flux densities greater than seven times the local rms noise, yet it still contains 464 sources. Nineteen of these are complex sources consisting of multiple components. Cross matching of the catalog to prior surveys of the E-CDF-S confirms the linearity of the flux density calibration, albeit with a slight possible offset (a few percent) in scale. Improvements to the data reduction and source catalog are ongoing, and we intend to produce a second data release in January 2009.
description: To appear in ApJS, 46 pages with 6 figures, see http://taltos.pha.jhu.edu/~nmiller/vlaecdfs_main.html
Turbulent Proton Heating Rate in the Solar Wind from $5$ to $45~R_{\odot}$
Creators: name: Raja, K. Sasikumar
name: Subramanian, Prasad
name: Ingale, Madhusudan
name: Ramesh, R.
name: Maksimovic, Milan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Various remote sensing observations have been used so far to probe the turbulent properties of the solar wind. Using the recently reported density modulation indices that are derived using angular broadening observations of Crab Nebula during 1952 - 2013, we measured the solar wind proton heating using the kinetic $\rm Alfv\acute{e}n$ wave dispersion equation. The estimated heating rates vary from $\approx 1.58 \times 10^{-14}$ to $1.01 \times 10^{-8} ~\rm erg~ cm^{-3}~ s^{-1}$ in the heliocentric distance range 5 - 45 $\rm R_{\odot}$. Further, we found that heating rates vary with the solar cycle in correlation with density modulation indices. The models derived using in-situ measurements (for example, electron/proton density, temperature, and magnetic field) that the recently launched Parker Solar Probe observes (planned closest perihelia $\rm 9.86~ R_{\odot}$ from the center of the Sun) are useful in the estimation of the turbulent heating rate precisely. Further, we compared our heating rate estimates with the one derived using previously reported remote sensing and in-situ observations.
description: 18 Pages, 4 Figures, 1 Table - accepted for publication in the Astrophysical Journal
Co-existing chiral and collinear phases in a distorted triangular antiferromagnet
Creators: name: Smirnov, A. I.
name: Svistov, L. E.
name: Prozorova, L. A.
name: Zheludev, A.
name: Lumsden, M. D.
name: Ressouche, E.
name: Petrenko, O. A.
name: Nishikawa, K.
name: Kimura, S.
name: Hagiwara, M.
name: Kindo, K.
name: Shapiro, A. Ya.
name: Demianets, L. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The entire magnetic phase diagram of the quasi two dimensional (2D) magnet on a distorted triangular lattice KFe(MoO4)2 is outlined by means of magnetization, specific heat, and neutron diffraction measurements. It is found that the spin network breaks down into two almost independent magnetic subsystems. One subsystem is a collinear antiferromagnet that shows a simple spin-flop behavior in applied fields. The other is a helimagnet that instead goes through a series of exotic commensurate-incommensurate phase transformations. In the various phases one observes either true 3D order or quasi-2D order. The experimental findings are compared to theoretical predictions found in literature
description: 4 pages, 4 figures
microRNA in cellular senescence
Creators: name: Sedia, Carla
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Senescence is recognized as a permanent arrest of cell proliferation triggered by telomere shortening or various stresses. Senescence imposes a barrier to tumorigenesis and contributes to aging. It represents a cell response that encompasses gene expression regulation at transcriptional and post-transcriptional levels. MicroRNAs (miRNAs or miRs) are small non-coding RNAs that regulate diverse biological processes through their control of mRNA degradation or translation.
In this work, we have analyzed the expression profiles of 284 known microRNAs in senescent relative to early-passage IMR90 human diploid fibroblasts. We found that 179 microRNAs were expressed at significant level and that in senescent cells 47% were downregulated (at least 2-fold) and 19% were upregulated at same extent.
With only few exceptions, a similar expression profile was observed in human senescent BJ fibroblasts, as well as in young IMR90 fibroblasts treated with a mild chronic oxidative stress or with etoposide.The upregulated microRNAs, validated by Quantitative Real Time PCR, included miR-23b, miR-30e-5p, miR-126*, miR-134, miR-200c, miR-210, miR-376a*, miR-369-5p, miR-379, miR-410, miR-432, miR-485-5p, miR-486, miR-494, miR-542-5p, miR-654, miR-656 and some of them (miR-134, miR-369-3p, miR-376a*, miR-379, miR-410, miR-432, miR-485-5p, miR-494, miR-654 and miR-656) are members of an imprinted region of human chromosome 14.
We found that ectopic expression of some of the upregulated microRNAs (miR-210, miR-376a*, miR-486, miR-494, miR-542-5p, miR-654) in young proliferating fibroblasts triggers a premature senescent phenotype showing typical markers of senescence and accompanied also by the appearance of molecular complexes involved in different patterns of DDR (DNA damage response).