cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rippling of Graphene
Creators: name: Thompson-Flagg, Rebecca C.
name: Moura, Maria J. B.
name: Marder, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Meyer et al (2007) found that free-standing graphene sheets, just one atom thick, display spontaneous ripples. The ripples are of order 2-20 Å high and 20-200 Å wide. The sheets in which they appear are only one atom thick, and extend for around 5000 Å through vacuum between metal struts that support them. Other groups have since created free-standing graphene as well (Garcia-Sanchez 2008 ; Bolotin et al. 2008), and similar ripples have been found for graphene on a glass substrate (Geringer et al. 2008). Here we show that these ripples can be explained as a consequence of adsorbed molecules sitting on random sites. The adsorbates cause the bonds between carbon atoms to lengthen slightly. Static buckles then result from a mechanism like the one that leads to buckling of leaves; buckles caused by roughly 20% coverage of adsorbates are consistent with experimental observations. We explain why this mechanism is more likely to explain rippled than thermal fluctuations or the Mermin-Wagner theorem, which have previously been invoked.
description: 5 pages and 5 figures
Typer la dé-sérialisation sans sérialiser les types
Creators: name: Henry, Grégoire
name: Mauny, Michel
name: Chailloux, Emmanuel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: In this paper, we propose a way of assigning static type information to unmarshalling functions and we describe a verification technique for unmarshalled data that preserves the execution safety provided by static type checking. This technique, whose correctness is proven, relies on singleton types whose values are transmitted to unmarshalling routines at runtime, and on an efficient checking algorithm able to deal with sharing and cycles.
Many Body Quantum Chaos and Dual Unitarity Round-a-Face
Creators: name: Prosen, Tomaz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new type of locally interacting quantum circuits which are generated by unitary interactions round-a-face (IRF). Specifically, we discuss a set (or manifold) of dual-unitary IRFs with local Hilbert space dimension $d$ (DUIRF$(d)$) which generate unitary evolutions both in space and time directions of an extended 1+1 dimensional lattice. We show how arbitrary dynamical correlation functions of local observables can be evaluated in terms of finite dimensional completely positive trace preserving unital maps, in complete analogy to recently studied circuits made of dual unitary brick gates (DUBG). In fact, we show that the simplest non-trivial (non-vanishing) local correlation functions in dual-unitary IRF circuits involve observables non-trivially supported on at least two sites. We completely characterise the 10-dimensional manifold of DUIRF$(2)$ for qubits ($d=2$) and provide, for $d=3,4,5,6,7$, empirical estimates of its dimensionality based on numerically determined dimensions of tangent spaces at an ensemble of random instances of dual-unitary IRF gates. In parallel, we apply the same algorithm to determine ${\rm dim}\,{\rm DUBG}(d)$ and show that they are of similar order though systematically larger than ${\rm dim}\,{\rm DUIRF}(d)$ for $d=2,3,4,5,6,7$. It is remarkable that both sets have rather complex topology for $d\ge 3$ in the sense that the dimension of the tangent space varies among different randomly generated points of the set. Finally, we provide additional data on dimensionality of the chiral extension of DUBG circuits with distinct local Hilbert spaces of dimensions $d\neq d'$ residing at even/odd lattice sites.
description: 11 pages in RevTeX, 10 figures, submitted to Chaos, focus issue "Dissipative Quantum Chaos"
Compact groups from semi-analytical models of galaxy formation -- II: Different assembly channels
Creators: name: Diaz-Gimenez, Eugenia
name: Zandivarez, Ariel
name: Mamon, Gary
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the formation of over 6000 compact groups (CGs) of galaxies identified in mock redshift-space galaxy catalogues built from semi-analytical models of galaxy formation (SAMs) run on the Millennium Simulations. We select CGs of 4 members in our mock SDSS galaxy catalogues and, for each CG, we trace back in time the real-space positions of the most massive progenitors of their 4 galaxies. By analysing the evolution of the distance of the galaxy members to the centre of mass of the group, we identify 4 channels of CG formation. The classification of these assembly channels is performed with an automatic recipe inferred from a preliminary visual inspection and based on the orbit of the galaxy with the fewest number of orbits. Most CGs show late assembly, with the last galaxy arriving on its first or second passage, while only 10-20 per cent form by the gradual contraction of their orbits by dynamical friction, and only a few per cent forming early with little subsequent contraction. However, a SAM from a higher resolution simulation leads to earlier assembly. Assembly histories of CGs also depend on cosmological parameters. At similar resolution, CGs assemble later in SAMs built on parent cosmological simulations of high density parameter. Several observed properties of mock CGs correlate with their assembly history: early-assembling CGs are smaller, with shorter crossing times, and greater magnitude gaps between their brightest two members, and their brightest galaxies have smaller spatial offsets and are more passive.
description: 14 pages, 11 figures, 3 tables, accepted for publication in MNRAS
Arbuscular Mycorrhizal fungi restore normal growth and alter polyamine content and gene expression in AL35 poplar clone grown on highly heavy metal contaminated soil
Creators: name: Cicatelli, Angela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Heavy metal (HM) pollution is a major worldwide environmental concern. Phytoremediation has become a promising remediation technique that include the use of selected plant species to remove or to stabilize a range of pollutants. Plant tolerance to HM stress is improved by arbuscular mycorrhizal (AM) fungi. Thus, suitable plant fungus combinations may contribute to the success of phytoremediation of HM polluted soil. Metallothioneins (MTs) and polyamines (PAs) are implicated in the response and tolerance to HM stress in several plant species, but whether the response is modulated by AM fungi remains to be clarified. Populus alba AL35 plants were grown in pots containing either soil collected from a HM polluted or unpolluted soil; they were pre-inoculated or not with Glomus mosseae or G. intraradices. At the first and the second growth season, the expression of MT and PA biosynthetic genes was analysed in leaves using quantitative RT-PCR, and free and conjugated foliar PA concentrations were detected. Results indicate that on polluted soil, AM fungi restored plant biomass despite higher Cu and Zn accumulation in plant organs. P. alba mycorrhizal plants exhibit increased capacity for stabilization of soil HMs, and improved stress tolerance through the transcriptional up-regulation of stress-related genes and the protective role of PAs.
Strumenti per la verifica della sostenibilità dei prodotti edilizi con materiali avanzati. Confronto tra i livelli di ecosostenibilità, biocompatibilità e convenienza del fotovoltaico a film sottile e di quello a celle organiche.
Creators: name: Filagrossi Ambrosino, Cristian
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Il presente lavoro di ricerca nasce dall’interesse personale nei confronti delle promettenti tecnologie fotovoltaiche di terza generazione e dalla volontà di testarle in una visione a 360 gradi, cercando di considerare ogni aspetto e relazione tra ambiente, tecnica fotovoltaica, salute umana, economia ed architettura, e si innesta nel filone di ricerca dipartimentale sulla valutazione della sostenibilità degli edifici e dei prodotti per l’edilizia.
In particolare il risultato della ricerca consiste nell'elaborazione di un metodo di valutazione con il quale si effettua un confronto, in termini di ecosostenibilità, biocompatibilità e convenienza, tra la tecnologia a film sottile (CIGS) e quella a celle organiche (DSSC).
Triaxial magnetic anisotropy in the two-dimensional ferromagnetic semiconductor CrSBr
Creators: name: Yang, Ke
name: Wang, Guangyu
name: Liu, Lu
name: Lu, Di
name: Wu, Hua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two-dimensional (2D) ferromagnets have recently drawn extensive attention, and here we study the electronic structure and magnetic properties of the bulk and monolayer of CrSBr, using first-principles calculations and Monte Carlo simulations. Our results show that bulk CrSBr is a magnetic semiconductor and has the easy magnetization b-axis, hard c-axis, and intermediate a-axis. Thus, the experimental triaxial magnetic anisotropy (MA) is well reproduced here, and it is identified to be the joint effects of spin-orbit coupling (SOC) and magnetic dipole-dipole interaction. We find that bulk CrSBr has a strong ferromagnetic (FM) intralayer coupling but a marginal interlayer one. We also study CrSBr monolayer in detail and find that the intralayer FM exchange persists and the shape anisotropy has a more pronounced contribution to the MA. Using the parameters of the FM exchange and the triaxial MA, our Monte Carlo simulations show that CrSBr monolayer has Curie temperature Tc = 175 K. Moreover, we find that a uniaxial tensile (compressive) strain along the a (b) axis would further increase the Tc.
description: 7 pages, 9 figures, 4 tables
Intermittent millisecond X-ray pulsations from the neutron-star X-ray transient SAX J1748.9-2021 in the globular cluster NGC 6440
Creators: name: Altamirano, D.
name: Casella, P.
name: Patruno, A.
name: Wijnands, R.
name: van der Klis, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on intermittent X-ray pulsations with a frequency of 442.36 Hz from the neutron-star X-ray binary SAX J1748.9--2021 in the globular cluster NGC 6440. The pulsations were seen during both 2001 and 2005 outbursts of the source, but only intermittently, appearing and disappearing on timescales of hundreds of seconds. We find a suggestive relation between the occurrence of type-I X-ray bursts and the appearance of the pulsations but the relation is not strict. This behavior is very similar to that of the intermittent accreting millisecond X-ray pulsar HETE J1900.1--2455. The reason for the intermittence of the pulsations remains unclear. However it is now evident that a strict division between pulsating and non-pulsating does not exist. By studying the Doppler shift of the pulsation frequency we determine an orbit with a period of 8.7 hrs and an projected semi major axis of 0.39 lightsec. The companion star might be a main--sequence or a slightly evolved star with a mass of $\sim$1 $M_\odot$. Therefore, SAX J1748.9--2021 has a longer period and may have a more massive companion star than all the other accreting millisecond X-ray pulsars except for Aql X-1.
description: 5 pages, 4 figures, Accepted by ApJL - Uses emulateapj.cls - New figure added: "Pulse frequency as a function of orbital phase". Figure 4 has changed. Text has been rewritten as to fit the 4 pages limit
Spin Berry points as crucial for ultrafast demagnetization
Creators: name: Zhang, G. P.
name: Bai, Y. H.
name: George, Thomas F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Laser-induced ultrafast demagnetization has puzzled researchers around the world for over two decades. Intrinsic complexity in electronic, magnetic, and phononic subsystems is difficult to understand microscopically. So far it is not possible to explain demagnetization using a single mechanism, which suggests a crucial piece of information still missing. In this paper, we return to a fundamental aspect of physics: spin and its change within each band in the entire Brillouin zone. We employ fcc Ni as an example and use an extremely dense {\bf k} mesh to map out spin changes for every band close to the Fermi level along all the high symmetry lines. To our surprise, spin angular momentum at some special {\bf k} points abruptly changes from $\pm \hbar/2$ to $\mp \hbar/2$ simply by moving from one crystal momentum point to the next. This explains why intraband transitions, which the spin superdiffusion model is based upon, can induce a sharp spin moment reduction, and why electric current can change spin orientation in spintronics. These special {\bf k} points, which are called spin Berry points, are not random and appear when several bands are close to each other, so the Berry potential of spin majority states is different from that of spin minority states. Although within a single band, spin Berry points jump, when we group several neighboring bands together, they form distinctive smooth spin Berry lines. It is the band structure that disrupts those lines. Spin Berry points are crucial to laser-induced ultrafast demagnetization and spintronics.
description: 19 pages and nine figures, Invited paper to Modern Physics Letters B
Large spin-to-charge conversion at room temperature in extended epitaxial Sb2Te3 topological insulator chemically grown on Silicon
Creators: name: Longo, Emanuele
name: Belli, Matteo
name: Alia, Mario
name: Rimoldi, Martino
name: Cecchini, Raimondo
name: Longo, Massimo
name: Wiemer, Claudia
name: Locatelli, Lorenzo
name: Gubbiotti, Gianluca
name: Fanciulli, Marco
name: Mantovan, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Spin-charge interconversion phenomena at the interface between magnetic materials and topological insulators (TIs) are attracting enormous interest in the research effort towards the development of fast and ultra-low power devices for the future information and communication technology. We report a large spin-to-charge conversion efficiency in Au/Co/Au/Sb2Te3/Si(111) heterostructures based on Sb2Te3 TIs grown by metal organic chemical vapor deposition on 4 inches Si(111) substrates. By conducting room temperature spin pumping ferromagnetic resonance, we measure an inverse Edelstein Effect length λIEE up to 0.75 nm, a record value for 3-dimensional chalcogenide-based TIs heterostructures. Our results open the path toward the use of chemical methods to produce TIs on large area Si substrates and characterized by highly performing spin-charge conversion, thus marking a milestone toward future technology-transfer.
description: Main text: 28 pages, 5 figures and 2 tables. Supplementary information are also included in the file with additional 12 pages
On the construction of Fermi-Walker transported frames
Creators: name: Maluf, J. W.
name: Faria, F. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider tetrad fields as reference frames adapted to observers that move along arbitrary timelike trajectories in spacetime. By means of a local Lorentz transformation we can transform these frames into Fermi-Walker transported frames, which define a standard of non-rotation for accelerated observers. Here we present a simple prescription for the construction of Fermi-Walker transported frames out of an arbitrary set of tetrad fields.
description: 16 pages, no figures
title:  Considerazioni sulla nozione di sostituibilità a partire dal “prodotto marginale netto” di Marshall
Creators: name: Trabucchi  ,  Paolo
Publisher: name: RomaTrE-Press
Year: 2023

description: The paper looks at the reactions that Marshall’s highly controversial notion of a ‘marginal net product’ has elicited among neoclassical economists from the 1930s to the 1970s. The immediate purpose is to highlight the radically different responses that traditional neoclassical theory, on the one hand, and its neo-Walrasian reformulation, on the other, have given to the problem that seems to underlie Marshall’s notion, namely, the difficulty in grounding the notion of factor substitution on purely ‘empirical’ considerations. It is further suggested that not only the traditional position, based as it is on the notion of capital as a ‘single quantity’, cannot be accepted, but that the same applies, though for different reasons, to the neo-Walrasian position.
description: Giornate della Ricerca del Dipartimento di Economia di Roma Tre
GPU-Accelerated Hierarchical Bayesian Inference with Application to Modeling Cosmic Populations: CUDAHM
Creators: name: Szalai-Gindl, János M.
name: Loredo, Thomas J.
name: Kelly, Brandon C.
name: Csabai, István
name: Budavári, Tamás
name: Dobos, László
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computation (stat.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We describe a computational framework for hierarchical Bayesian inference with simple (typically single-plate) parametric graphical models that uses graphics processing units (GPUs) to accelerate computations, enabling deployment on very large datasets. Its C++ implementation, CUDAHM (CUDA for Hierarchical Models) exploits conditional independence between instances of a plate, facilitating massively parallel exploration of the replication parameter space using the single instruction, multiple data architecture of GPUs. It provides support for constructing Metropolis-within-Gibbs samplers that iterate between GPU-accelerated robust adaptive Metropolis sampling of plate-level parameters conditional on upper-level parameters, and Metropolis-Hastings sampling of upper-level parameters on the host processor conditional on the GPU results. CUDAHM is motivated by demographic problems in astronomy, where density estimation and linear and nonlinear regression problems must be addressed for populations of thousands to millions of objects whose features are measured with possibly complex uncertainties. We describe a thinned latent point process framework for modeling such demographic data. We demonstrate accurate GPU-accelerated parametric conditional density deconvolution for simulated populations of up to 300,000 objects in ~1 hour using a single NVIDIA Tesla K40c GPU. Supplementary material provides details about the CUDAHM API and the demonstration problem.
description: 28 pages, 7 figures, 2 appendices
Anchoring and traffic effects in the virtual market platform of FIFA 20
Creators: name: Popescu, Andrei
name: Fiedler, Klaus
Publisher: name: Journal of Dynamic Decision Making
Year: 2023

description: An Internet-based competitive marketing game, FIFA 20, served to investigate the effectiveness of two opposite strategies in soccer-player auctions under semi-naturalistic conditions. Granting the validity of both causal principles, the anchoring principle giving an advantage to starting with a high price (Ritov, 1996) and the traffic principle underlying the starting-low advantage (Ku, Galinsky, & Murnighan, 2006), we nevertheless expected starting low strategies to produce higher end-prices under FIFA 20 conditions. Two experiments, each using multiple copies of two players from the lowest price segment (Kramaric, Pizzi) and from an elevated price segment (Laporte, Martial), corroborated these expectations. A starting-low advantage was evident in two utility aspects, enhanced average (profit) and reduced variance (uncertainty aversion) of end prices obtained for player copies offered at lower starting prices. However, when the causal impact of the manipulated starting value was overshadowed by extraneous media influences, these findings were reduced or disappeared but never reversed.
description: Journal of Dynamic Decision Making, Vol. 9 (2023)
Valutazione della genotossicità in suoli a diverso grado di contaminazione
Creators: name: Rocco, Annamaria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Obiettivo principale di questo lavoro di ricerca è stato valutare la genotossicita’ di suoli a diverso grado di contaminazione. A tale scopo è stata selezionata e messa a punto una batteria di test di genotossicità composta dal test dei micronuclei mediante Vicia faba e dal test della cometa mediante V. faba ed Eisenia veneta. Tale batteria di test è stata applicata a suoli campionati, in due campagne di prelievo, in siti dell'area urbana di Napoli sottoposti a diverso impatto antropico al fine di evidenziare eventuali relazioni tra gli effetti genotossici e la concentrazione di alcuni metalli nei suoli, e tra gli effetti genotossici e le principali caratteristiche chimico-fisiche dei suoli. Inoltre, al fine di poter effettuare un confronto spazio-temporale e di attribuire un giudizio di rischio genotossico ai suoli campionati è stato sviluppato e proposto un indice di genotossicità, che integra i risultati ottenuti dalla batteria di test. I metalli pesanti possono provocare, oltre al danno genotossico, anche altri effetti a livello sub-cellulare. A tale scopo è stato condotto uno studio preliminare sui lombrichi della specie Eisenia fetida volto a testare la capacità del saggio “stabilità della membrana lisosomiale” di risposta alla contaminazione da rame.
I risultati ottenuti hanno evidenziato che la batteria di test selezionata si è rivelata uno strumento di facile applicazione e sensibile nell’identificazione della genotossicità dei suoli studiati. L’indice di genotossicità proposto (GBI), ottenuto dall’integrazione in un unico valore dei risultati della batteria di test applicati, ha permesso di attribuire un giudizio relativo al rischio genotossico di ogni suolo. Anche l’indice, così come si era evidenziato per i singoli test della batteria applicata, non mostra correlazione con i metalli presenti nei suoli studiati. Pertanto, gli effetti genotossici rilevati nei suoli non sembrerebbero dovuti alla contaminazione dai metalli indagati, probabilmente a causa del fatto che le componenti colloidali e la sostanza organica del suolo possono svolgere un’azione di mitigazione e la genotossicità misurata potrebbe essere attribuita alla presenza di altri contaminanti non indagati o di miscele complesse di essi.
Il test sulla stabilità della membrana lisosomiale si è mostrato un biomarker molto sensibile alla contaminazione da rame e come tale potrebbe essere utilizzato in ricerche future per valutarne la sensibilità ad altri contaminanti, al fine ultimo di inserire questo test in una batteria.
DWEB: A Data Warehouse Engineering Benchmark
Creators: name: Darmont, Jérôme
name: Bentayeb, Fadila
name: Boussaïd, Omar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data warehouse architectural choices and optimization techniques are critical to decision support query performance. To facilitate these choices, the performance of the designed data warehouse must be assessed. This is usually done with the help of benchmarks, which can either help system users comparing the performances of different systems, or help system engineers testing the effect of various design choices. While the TPC standard decision support benchmarks address the first point, they are not tuneable enough to address the second one and fail to model different data warehouse schemas. By contrast, our Data Warehouse Engineering Benchmark (DWEB) allows to generate various ad-hoc synthetic data warehouses and workloads. DWEB is fully parameterized to fulfill data warehouse design needs. However, two levels of parameterization keep it relatively easy to tune. Finally, DWEB is implemented as a Java free software that can be interfaced with most existing relational database management systems. A sample usage of DWEB is also provided in this paper.
MANNANOLIGOSACCARIDI COME ALTERNATIVA AGLI ANTIBIOTICI NELL'ALIMENTAZIONE DEL CONGILIO
Creators: name: Marono, Stefania
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Il periodo intorno allo svezzamento, risulta essere particolarmente delicato per i coniglietti, che si trovano a dover far fronte a forti stress, spesso causa di patologie enteriche che non di rado hanno un esito letale.
La prevenzione di tali patologie, così come la cura, viene effettuata attraverso la somministrazione di antibiotici a scopo profilattico, ma lo smoderato utilizzo di questi farmaci, ha fatto nascere l’esigenza di limitarne l’uso, anche in seguito alla resistenza che batteri patogeni hanno mostrato nei confronti di tali medicamenti.
In seguito al divieto sancito dalla Comunità Europea nel 2006, all’utilizzo degli antibiotici come promotori della crescita, è nata l’esigenza di ricercare molecole alternative che potessero sostituire gli antibiotici negli allevamenti zootecnici.
Tra i rimedi alternativi agli antibiotici si annoverano probiotici, prebiotici, enzimi, acidi organici ed estratti vegetali.
Nella presente tesi, sono stati condotti studi sui prebiotici, in particolare i mannano-oligosaccaridi, il cui meccanismo di azione si basa su una sorta di esclusione competitiva, in quanto numerosi batteri patogeni intestinali posseggono fimbrie di tipo 1, che sono specifiche per il mannosio e che determinano l’attacco ai mannosio-recettori sulle cellule intestinali. I mannani quindi possono impedire l’associazione mediata da fimbrie di tipo 1 alla mucosa intestinale legandosi alle fimbrie di questi microrganismi.
I risultati ottenuti nelle varie prove sperimentali sopra riportate hanno evidenziato come i MOS possano rappresentare una valida alternativa agli antibiotici durante l’intero ciclo produttivo del coniglio da carne.
Weak lensing mass modeling bias and the impact of miscentring
Creators: name: Sommer, Martin W.
name: Schrabback, Tim
name: Applegate, Douglas E.
name: Hilbert, Stefan
name: Ansarinejad, Behzad
name: Floyd, Benjamin
name: Grandis, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Parametric modeling of galaxy cluster density profiles from weak lensing observations leads to a mass bias, whose detailed understanding is critical in deriving accurate mass-observable relations for constraining cosmological models. Drawing from existing methods, we develop a robust framework for calculating this mass bias in one-parameter fits to simulations of dark matter halos. We show that our approach has the advantage of being independent of the absolute noise level, so that only the number of halos in a given simulation and the representativeness of the simulated halos for real clusters limit the accuracy of the bias estimation. While we model the bias as a log-normal distribution and the halos with a Navarro-Frenk-White profile, our method can be generalized to any bias distribution and parametric model of the radial mass distribution. We find that the log-normal assumption is not strictly valid in the presence of miscentring of halos. We investigate the use of cluster centers derived from weak lensing in the context of mass bias, and tentatively find that such centroids can yield sensible mass estimates if the convergence peak has a signal-to-noise ratio approximately greater than four. In this context we also find that the standard approach to estimating the positional uncertainty of weak lensing mass peaks using bootstrapping severely underestimates the true positional uncertainty for peaks with low signal-to-noise ratios. Though we determine the mass and redshift dependence of the bias distribution for a few experimental setups, our focus remains providing a general approach to computing such distributions.
description: 19 pages, 12 fiures, 2 tables, submitted to MNRAS
Cascode voltage switch logic circuits
Creators: name: Chu, Kan Man
Publisher: name: University of British Columbia
Year: 2010

description: Cascode voltage switch (CVS) logic is a CMOS circuit technique which has potential advantages over conventional NAND/NOR logic in terms of circuit delay, layout density, power dissipation and logic flexibility. This thesis presents two new procedures for constructing differential CVS circuits to perform random logic functions. The first procedure makes use of a Karnaugh map and the second procedure is a tabular method based on the Quine-McCluskey approach. Both static and dynamic circuit techniques employing the CVS logic concept are discussed. Some wiring and layout methods based on theoretical graph models are presented to ensure the wirability of CVS circuits. An 8x8 NORA CVS multiplier has been designed using the 3μm CMOS technology of Northern Telecom. The chip measures 4mm by 4mm and simulations indicate that it can be run at a throughput rate of 50MHz.
Minimal Flavor Violation in the Lepton Sector of the Randall-Sundrum Model
Creators: name: Chen, Mu-Chun
name: Yu, Hai-Bo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a realization of Minimal Flavor Violation in the lepton sector of the Randall-Sundrum model. With the MFV assumption, the only source of flavor violation are the 5D Yukawa couplings, and the usual two independent sources of flavor violation are related. In the limit of massless neutrinos, the bulk mass matrices and 5D Yukawa matrices are simultaneously diagonalized, and hence the absence of FCNCs. In the case of massive neutrinos, the contributions to FCNCs in the charged lepton sector are highly suppressed, due to the smallness of neutrino masses. In addition, the MFV assumption also allows suppressing one-loop charged current contributions to flavor changing processes by reducing the size of the Yukawa couplings, which is not possible in the generic anarchical case. We found that the first KK mass scale as low as ~ 3 TeV can be allowed. In both cases, we present a set of numerical results that give rise to realistic lepton masses and mixing angles. Mild hierarchy in the 5D Yukawa matrix of O(25) in our numerical example is required to be consistent with two large and one small mixing angles. This tuning could be improved by having a more thorough search of the parameter space.
description: 12 pages, no figure; v2: clarifying remarks and references added; v3: version to appear in Phys. Lett. B
New biomolecular prognostic and predictive factors of response to treatment in colo-rectal cancer
Creators: name: Della Vittoria Scarpati, Giuseppina
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: microRNAs are small single-stranded RNA molecules of approximately 22 nucleotides that function as post-transcriptional gene regulators. MiRNAs play important roles in the control of many biological processes, such as cellular development, differentiation, proliferation, apoptosis and metabolism. miRNA expression is aberrant in several human tumors.
The biologic roles of miRNAs in cancer suggest a correlation with prognosis and therapeutic outcome.
In our study, we examined by microarray the expression of 939 miRNArole in fresh biopsies of 39 patients affected by local advanced rectal cancer, treated with neoadjuvant chemoradiotherapy and surgery, with the aim to investigate the possible predictive and prognostic role.
We have identified 14 miRNA which correlate significantly with Tumor Regression Grade 1.
Our results suggest that miRNA expression profile could have relevance as prognostic and predictive factor of response to chemo-radiotherapy in colo-rectal cancer.
La ricostruzione del castello nel contesto del paese di Lauro fra Ottocento e Novecento
Creators: name: Krasilnikova, Tatiana
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: La ricostruzione del castello nel contesto del paese di Lauro fra Ottocento e Novecento da don Filippo Massimo Lancellotti
PESQUISADORES DAS PRÓPRIAS VIDAS
Creators: name: Zarucki Tabac, Sara Esther Dias
name: Mandelert, Diana
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 390203
subject: Sociology of education

description: INTRODUÇÃO
O livro traz a discussão sobre o papel da Sociologia da Educação na formação de professores. É o resultado do meu trabalho como professora da disciplina na Faculdade de Educação da Uerj, em parceria com Sara Zarucki Tabac, professora de Sociologia da Universidade Federal de Alfenas. Reunimos 26 trabalhos de alunos de licenciatura, nos quais eles relataram suas trajetórias escolares até a universidade e as analisaram com a teoria da reprodução de Pierre Bourdieu. Assim, não são apenas narrativas. Poderiam ser chamados de relatos de pesquisa. Só que a empiria, os dados, os sujeitos das pesquisas são eles e seus respectivos olhares sobre os desafios no ingresso, permanência e conhecimento no ensino superior. Para entender melhor o contexto dos trabalhos, descrevo como tem sido o desenvolvimento da disciplina de Sociologia da Educação, ministrada por mim desde 2014 no campus Maracanã.
Alunos de Artes Visuais, Ciências Sociais, Ciências Biológicas, Educação Física, Filosofia, Física, Geografia, História, Letras, Matemática, Psicologia e Química têm em seus currículos Sociologia da Educação como uma disciplina obrigatória. Poderia dizer que essa característica é um dos desafios da matéria. Muitos não entendem de pronto a sua validade para a sua formação como professor. Vindos de outros cursos, a expectativa é aprender os conteúdos que os encantaram no ensino médio. Nem sempre as “disciplinas do 12” — como eles chamam o andar da Faculdade de Educação — têm um significado claro. Por isso, ao longo do curso, preciso fazer com que entendam que, em um país tão desigual como o Brasil, aprender Sociologia é condição sine qua non para que eles possam se tornar bons professores. Afinal, não são poucos os obstáculos sociais que eles encontrarão em suas salas de aula.
Cost reduction and data conflation in monitoring land change II
Creators: name: Stickler, Therese
name: Wannemacher, Karin
name: Birli, Barbara
name: Banko, Gebhard
name: Olteanu-Raimond, Ana-Maria
name: Schrammeijer, Bep
name: Schultz, Michael
Publisher: name: Zenodo
Year: 2021
Subjects: data conflation
cost reduction
engagement
open data
citizen science

description: This deliverable outlines the activities across the four demonstration pilots within Demo 1: Cost reduction and data conflation in monitoring land change while highlighting the respective target groups, type of data collected, methods of data collection, approaches towards data conflation as well as in their contribution to citizen engagement. Data from three of the four pilots are already openly accessible and available in Zenodo. In addition, the pilots can be categorized into two main groups: the ones that focus on engagement with the broad public with a rather low-threshold approach (i.e. Vienna, Amsterdam) and the other two pilots (Toulouse and Heidelberg) that focus on an expert-oriented approach with dedicated mapathons. One main topic of this report is data conflation, which was the primary focus of the Toulouse pilot, where data from IGN-FRANCE was commented on and validated by users and - after a quality check – went directly into the databases of IGN-FRANCE and local authorities. Additionally, the deliverable provides an overview on the broad range of activities to get users onboard and to make their engagement as sustainable as possible. The most successful approaches to engage citizens were in the Heidelberg and the Toulouse pilots via mapathons and for the Vienna and the Amsterdam pilots, press releases and announcements via media were effective. In the last months of the project, opportunities for continued sustainability of the pilots will be explored.
IDENTIFICATION OF DISEASE GENES FOR RARE AUTOSOMAL RECESSIVE EPILEPTIC SYNDROMES BY HOMOZYGOSITY MAPPING
Creators: name: Coppola, Antonietta
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Introduction: The genetics of the most common neurological disorders, including epilepsy, with mendelian inheritance has been dissected in the last twenty years. However the genetic etiology of some rare epileptic conditions is still unknown. This research project focuses on rare autosomal recessive (AR) epileptic conditions. The genetic data obtained so far indicate that about half of cases affected by autosomal recessive disorders carry a homozygous mutation descending from a unique ancestor (founder effect). The putative mutation is contained within a segment of the DNA, called “identical by descent” (IBD), that is transmitted along the generations. This segment is characterized by a set of contiguous homozygous polymorphisms (SNP) and may be detected using a genome wide genotyping approach, namely the “homozygosity mapping” which allows the typing of a great number of SNP   in order to detect very small IBD segments. Thus nuclear families (sib-pairs) originating from restricted areas can be genotyped in order to identify a new AR disease genes. In addition the novel sequencing methods can further follow up these regions allowing the rapid screening of hundreds genes.
Material and methods: Families with at least two affected siblings affected by a rare epileptic condition sharing the same clinical pictures have been selected. Parental ancestors should have originated from the same geographical area. The affected relatives, their parents and unaffected siblings have been genotyped using the Axiom Genome wide human assay (Affymetrix). A classical linkage analysis has been performed in case of a negative result from the homozygosity mapping approach for families with more than two affected relatives. Homozygosity regions have been then analyzed using a classical Sanger sequencing  or using a next generation sequencing approach.
Results and discussion: homozygosity mapping allowed the identification of homozygosity stretches in one out of four families. Combined analysis (homozygosity mapping plus linkage) allowed the identification of narrow homozygosity areas in two families. The analysis of the genes included in the isolated stretches is ongoing. The negative result in family 3 and the eventuality of a negative result for the ongoing sequencing analysis can be explained hypothesizing a different inheritance pattern (X-linked, low penetrance heterozygosity, non mendelian and digenic inheritance, compound heterozygousity) or methodology limiting issue (mutation contained in a segment shorter than the homozygosity mapping cut off).
A New Family of Multistep Methods with Improved Phase Lag Characteristics for the Integration of Orbital Problems
Creators: name: Vlachos, D. S.
name: Anastassi, Z. A.
name: Simos, T. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L06; 70-08; 70F05; 70F10; 70F15

description: In this work we introduce a new family of ten-step linear multistep methods for the integration of orbital problems. The new methods are constructed by adopting a new methodology which improves the phase lag characteristics by vanishing both the phase lag function and its first derivatives at a specific frequency. The efficiency of the new family of methods is proved via error analysis and numerical applications.
description: 21 pages, 3 figures, 1 table
Control of the Onset of Filamentation in Condensed Media
Creators: name: Dharmadhikari, A. K.
name: Alti, K.
name: Dharmadhikari, J. A.
name: Mathur, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Propagation of intense, ultrashort laser pulses through condensed media like crystals of BaF$_2$ and sapphire results in the formation of filaments. We demonstrate that the onset of filamentation may be controlled by rotating the plane of polarization of incident light. We directly visualize filamentation in BaF_2 via six-photon absorption-induced fluorescence and, concomitantly, by probing the spectral and spatial properties of white light that is generated.
description: To appear in Phys. Rev. A
DOEF: A Dynamic Object Evaluation Framework
Creators: name: He, Zhen
name: Darmont, Jérôme
Publisher: name: arXiv
Year: 2007
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In object-oriented or object-relational databases such as multimedia databases or most XML databases, access patterns are not static, i.e., applications do not always access the same objects in the same order repeatedly. However, this has been the way these databases and associated optimisation techniques like clustering have been evaluated up to now. This paper opens up research regarding this issue by proposing a dynamic object evaluation framework (DOEF) that accomplishes access pattern change by defining configurable styles of change. This preliminary prototype has been designed to be open and fully extensible. To illustrate the capabilities of DOEF, we used it to compare the performances of four state of the art dynamic clustering algorithms. The results show that DOEF is indeed effective at determining the adaptability of each dynamic clustering algorithm to changes in access pattern.
Inscriptis -- A Python-based HTML to text conversion library optimized for knowledge extraction from the Web
Creators: name: Weichselbraun, Albert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.3.1; H.4.3

description: Inscriptis provides a library, command line client and Web service for converting HTML to plain text. Its development has been triggered by the need to obtain accurate text representations for knowledge extraction tasks that preserve the spatial alignment of text without drawing upon heavyweight, browser-based solutions such as Selenium. In contrast to related software packages, Inscriptis (i) provides a layout-aware conversion of HTML that more closely resembles the rendering obtained from standard Web browsers; and (ii) supports annotation rules, i.e., user-provided mappings that allow for annotating the extracted text based on structural and semantic information encoded in HTML tags and attributes. These unique features ensure that downstream knowledge extraction components can operate on accurate text representations, and may even use information on the semantics and structure of the original HTML document.
description: Preprint of the published version, which includes all improvements made during the review process
Vagueness as a political strategy: weasel words in security council resolutions relating to the second gulf war
Creators: name: Scotto Di Carlo, Giuseppina
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Over the last few years the diplomatic language of UN resolutions has repeatedly been questioned for the excessive presence of vagueness.
In an era of expanding international contacts between different legal systems, international institutions such as the UN are constantly faced with the need to overcome cultural divergences of their recipient countries.  In order to meet these requirements, UN diplomatic texts may use vague words quite extensively. Such terms, whose meaning is very flexible, variable and strictly dependent on context and interpretation, have been defined by Mellinkoff (1963: 21) as “weasel words”.
The use of vague terms could be connected to the genre of diplomatic texts, as resolutions should be applicable to every international contingency. However, excessive vagueness could also lead to biased or even strategically-motivated interpretations of resolutions, undermining their legal impact and triggering conflicts instead of diplomatic solutions.

This doctoral thesis is based on two main research aims:
A first section aims at investigating on whether the use of strategic vagueness in Security Council resolutions relating to Iraq has contributed to the breakout of the second Gulf war instead of a diplomatic solution of the controversy.
     Using the qualitative Discourse-Historical approach (Wodak 2000) and quantitative analysis tools (Antconc and Sketch Engine), special attention is given to the historical/political consequences of vagueness used in that framework, and to the study of vague ‘weasel words’ (Mellinkoff 1963), modals, and  adjectives contained in the corpus.
The hypothesis of intentional vagueness is further reinforced through an analysis of the American legislation related to the outbreak of the war, to reveal how the U.S. has interpreted UN legislation and to understand the purposes and consequences of vague language contained in it.
     A second section of the study was originated by the desire to understand whether the same patterns would be used in resolutions relating to the Iranian 2010 nuclear crises revealing a relationship between the choice of vague linguistic features and intent to use intentional vagueness as a political strategy.
     The findings indicate that:
- Vagueness in resolutions has triggered the Iraqi conflict instead of diplomatic solutions.
- Similar patterns can also be found in resolutions relating to the Iranian 2010 nuclear crises: although being less vague than the resolutions relating to Iraq in order to avoid the same historical consequences, the legislation related to the Iranian nuclear controversy still suggests the UN intentional use of some vague linguistic patterns as a political strategy.
Applying matrix product operators to model systems with long-range interactions
Creators: name: Crosswhite, Gregory M.
name: Doherty, Andrew C.
name: Vidal, Guifre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An algorithm is presented which computes a translationally invariant matrix product state approximation of the ground state of an infinite 1D system; it does this by embedding sites into an approximation of the infinite ``environment'' of the chain, allowing the sites to relax, and then merging them with the environment in order to refine the approximation. By making use of matrix product operators, our approach is able to directly model any long-range interaction that can be systematically approximated by a series of decaying exponentials. We apply our techniques to compute the ground state of the Haldane-Shastry model and present results.
description: 7 pages, 3 figures; manuscript has been expanded and restructured in order to improve presentation of the algorithm
Scaling in rupture of polymer chains
Creators: name: Fugmann, S.
name: Sokolov, I. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the rupture dynamics of a homopolymer chain pulled at one end at a constant loading rate r. Compared to single bond breaking, the existence of the chain introduces two new aspects into rupture dynamics: the non-Markovian aspect in the barrier crossing and the slow-down of the force propagation to the breakable bond. The relative impact of both these processes is investigated, and the second one was found to be the most important at moderate loading rates. The most probable rupture force is found to decrease with the number of bonds as f_{max} const-(ln(N/r))^(2/3) and finally to approach a saturation value independent on N. All our analytical findings are confirmed by extensive numerical simulations.