cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Surfactant assisted synthesis of Co and Li doped ZnO nanocrystalline samples showing room temperature ferromagnetism
Creators: name: Jayakumar, onattu D.
name: Gopalakrishnan, Iyyani K.
name: Kulshreshtha, Shailendra K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have developed a simple, surfactant assisted synthesis route for the preparation, in gram quantities, of Co and Li doped ZnO nanocrystalline samples showing robust room temperature ferromagnetism. Our studies show that RTF is intrinsic to Zn0.85Co0.05Li0.10O and not due to any segregated secondary phases. In addition, it has been shown that the defects play an important role in activating RTF in these oxide systems. This also provide an explanation for the widely varying results observed in the literature. The method can also be extended for the synthesis of other transition metal doped ZnO.
description: 16 pages, 4 figures
Detection of Transition Times from Single-particle-tracking Trajectories
Creators: name: Akimoto, Takuma
name: Yamamoto, Eiji
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In heterogeneous environments, the diffusivity is not constant but changes with time. It is important to detect changes in the diffusivity from single-particle-tracking trajectories in experiments. Here, we devise a novel method for detecting the transition times of the diffusivity from trajectory data. A key idea of this method is the introduction of a characteristic time scale of the diffusive states, which is obtained by a fluctuation analysis of the time-averaged mean square displacements. We test our method in silico by using the Langevin equation with a fluctuating diffusivity. We show that our method can successfully detect the transition times of diffusive states and obtain the diffusion coefficient as a function of time. This method will provide a quantitative description of the fluctuating diffusivity in heterogeneous environments and can be applied to time series with transitions of states.
description: 11 pages, 4 figures
Energy optimization of bioethanol production via gasification of switchgrass
Creators: name: Martin, Mariano
name: Grossmann, Ignacio E.
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: In this article, we address the conceptual design of the bioethanol process from switchgrass via gasification. A superstructure is postulated for optimizing energy use that embeds direct or indirect gasification, followed by steam reforming or partial oxidation. Next, the gas composition is adjusted with membrane-PSA or water gas shift. Membrane separation, absorption with ethanol-amines and PSA are considered for the removal of sour gases. Finally, two synthetic paths are considered, high alcohols catalytic process with two possible distillation sequences, and syngas fermentation with distillation, corn grits, molecular sieves and pervaporation as alternative dehydration processes. The optimization of the superstructure is formulated as an mixed-integer nonlinear programming problem using short-cut models, and solved through a special decomposition scheme that is followed by heat integration. The optimal process consists of direct gasification followed by steam reforming, removal of the excess of hydrogen and catalytic synthesis, yielding a potential operating cost of $0.41/gal.
Additional file 1 of Global metabolomic and lipidomic analysis reveals the potential mechanisms of hemolysis effect of Ophiopogonin D and Ophiopogonin D' in vivo
Creators: name: Xu, Huan-Hua
name: Jiang, Zhen-Hong
name: Huang, Cong-Shu
name: Sun, Yu-Ting
name: Xu, Long-Long
name: Tang, Xiang-Ling
name: Tan, Hong-Ling
name: Ma, Zeng-Chun
name: Gao, Yue
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1: Figure S1. Volcano graph for screening differential metabolites. Figure S2. Volcano graph for screening differential lipids.
High Power Operations of LEDA
Creators: name: Young, L. M.
name: Rybarcyk, L. J.
name: Schneider, J. D.
name: Schulze, M. E.
name: Smith, H. V.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The LEDA RFQ, a 350-MHz continuous wave (CW) radio-frequency quadrupole (RFQ), successfully accelerated a 100-mA CW proton beam from 75 keV to 6.7 MeV. We have accumulated 111 hr of beam on time with at least 90 mA of CW output beam current. The 8-m-long RFQ accelerates a dc, 75-keV, ~106-mA H+ beam from the LEDA injector with ~94% transmission. When operating the RFQ at the RF power level for which it was designed, the peak electrical field on the vane tips is 33 MV/m. However, to maintain the high transmission quoted above with the CW beam, it was necessary to operate the RFQ with field levels ~10% higher than design. The RFQ dissipates 1.5 MW of RF power when operating with this field. Three klystrons provide the 2.2 MW of RF power required by the RFQ to accelerate the 100-mA beam. The beam power is 670 kW. Some of the challenges that were met in accelerating a 100-mA CW proton beam to 6.7 MeV, will be discussed.
description: 5 pages, 5 figures, submitted to the LINAC 2000 Conference, Paper TU201
Classification of binary self-dual [76, 38, 14] codes with an automorphism of order 9
Creators: name: Yankov, Nikolay
name: Russeva, Radka
name: Karatash, Emine
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Using the method for constructing binary self-dual codes with an automorphism of order square of a prime number we have classified all binary self-dual codes with length 76 having minimum distance $d=14$ and automorphism of order 9. Up to equivalence, there are six self-dual $[76, 38, 14]$ codes with an automorphism of type $9$-$(8,0,4)$. All codes obtained have new values of the parameter in their weight enumerator thus more than doubling the number of known values.
Economic evaluation of Cytosponge®-trefoil factor 3 for Barrett esophagus: A cost-utility analysis of randomised controlled trial data.
Creators: name: Swart, Nicholas
name: Maroni, Roberta
name: Muldrew, Beth
name: Sasieni, Peter
name: Fitzgerald, Rebecca C
name: Morris, Stephen
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Esophagus
Screening
Early Detection
Cancer Prevention
Neoplasia

description: BackgroundEsophageal adenocarcinoma has a very poor prognosis unless detected early. The Cytosponge-trefoil factor 3 (TFF3) is a non-endoscopic test for Barrett esophagus, a precursor of esophageal adenocarcinoma. Randomised controlled trial data from the BEST3 trial has shown that an offer of Cytosponge-TFF3 in the primary care setting in England to individuals on medication for acid reflux increases detection of Barrett esophagus 10-fold over a year compared with standard care. This is an economic evaluation of Cytosponge-TFF3 screening versus usual care using data from the BEST3 trial which took place between 20th March 2017 and 21st March 2019.MethodsA Markov model with a one-year cycle-length and a lifetime time horizon was created, adapting previous modeling work on Cytosponge screening. The impact of one round of Cytosponge screening was modelled in patients with a median age of 69 years (based on BEST3 trial population). Cost-effectiveness was expressed as an incremental cost-effectiveness ratio (ICER). Deterministic and probabilistic sensitivity analyses were conducted on model parameters.FindingsPer person, one round of Cytosponge-TFF3 screening, including confirmatory endoscopy and treatment, in the intervention arm costed £82 more than usual care and generated an additional 0.015 quality-adjusted life-years (QALYs) at an ICER of £5,500 per QALY gained. Probabilistic sensitivity analysis gave an ICER of £5,405 (95% CI -£6,791 to £17,600). The average QALY gain per person is small because the majority of patients in the model will not develop BE and therefore will have no resulting change in their utility, however the small proportion of patients who are identified with BE dysplasia or cancer derive large benefit. At a willingness-to-pay threshold of £20,000 per QALY, the probability that Cytosponge-TFF3 was cost-effective was over 90%.InterpretationUsing data from a pragmatic randomised trial, one-off Cytosponge-TFF3 screen is cost-effective relative to usual care for patients with gastro-esophageal reflux disease, despite relatively low uptake and an older population in this trial setting than previously modelled. Improving Cytosponge-TFF3 uptake and targeting younger patients is likely to further improve cost-effectiveness.
Geometry for the accelerating universe
Creators: name: Punzi, Raffaele
name: Schuller, Frederic P.
name: Wohlfarth, Mattias N. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Lorentzian spacetime metric is replaced by an area metric which naturally emerges as a generalized geometry in quantum string and gauge theory. Employing the area metric curvature scalar, the gravitational Einstein-Hilbert action is re-interpreted as dynamics for an area metric. Without the need for dark energy or fine-tuning, area metric cosmology explains the observed small acceleration of the late Universe.
description: 4 pages, 1 figure
title: Town of Rowley
Creators: name: (:Unkn) Unknown
Publisher: name: University of Massachusetts Amherst
Year: 1999
Subjects: subject: Public Safety
subject: Cultural Resources
subject: Natural Resources
subject: Housing
subject: Land Use
subject: Economics
subject: Growth and Development
subject: Urban, Community and Regional Planning
subject: Urban Studies and Planning

description: The Center for Economic Development at the University of Massachusetts, in Amherst, is part of the Landscape Architecture and Regional Planning Department, and is funded by the Economic Development Administration of the U.S. Department of Commerce, and the University of Massachusetts.
description: Rowley, Massachusetts is an attractive residential community striving to find a balance between residential growth that compliments its small town ambience and commercial development that can offset the high cost associated with an increasing population. With 80% of the land within its boundaries forested and well over 2,000 acres permanently protected, Rowley sees its rural character as a major asset.
Indagine sui testi regolativi prodotti da allievi di seconda media: analisi linguistica, confronto con altre tipologie testuali e ricerca di tracce del pensiero cognitivo
Creators: name: Agosti, Sandro
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2019
Subjects: testo regolativo
livelli linguistici
linguaggio telematico giovanile
pensiero narrativo

description: La ricerca consiste in un'analisi linguistica su testi regolativi di allievi di seconda media. In primo luogo, questo studio osserva se gli scritti soddisfino le esigenze informativo-regolative e linguistiche della sunnominata tipologia testuale. I risultati sono poi stati confrontati con quelli di un precedente lavoro sui generis, condotto però su una raccolta di testi narrativi. In seguito, il confronto si è esteso al linguaggio telematico giovanile (LTG). Da ultimo, è stato preso in considerazione un concetto teorico, quello del pensiero narrativo, per cercare di spiegare i processi cognitivi, sociali, emotivi ed esperienziali che sostengono la redazione degli scritti. In generale, gli allievi hanno mostrato una buona padronanza del testo regolativo; le maggiori difficoltà (molte delle quali peraltro condivise con i coetanei cimentatisi nei testi narrativi) si avvertono nella pochezza del bagaglio lessicale, nella gestione della virgola e, a livello sintattico, nel controllo dei periodi ipotattici, in cui la confusione dell'allievo investe anche gli altri livelli linguistici. I testi esaminati si dimostrano impermeabili al LTG, di cui accolgono pochissime forme. Da ultimo, negli elaborati sono stati evidenziati elementi personali che sottolineano l'esigenza di comunicare con il prossimo ben oltre le specificità del testo narrativo e legati al vissuto esperienziale degli allievi. Relatore: Wolfgang Sahlfeld. Materia: Educazione fisica.
Energy and Water Optimization in Biofuel Plants
Creators: name: Grossmann, Ignacio E.
name: Martin, Mariano
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: In this paper we address the topic of energy and water optimization in the production of bioethanol from corn and switchgrass. We show that in order for these manufacturing processes to be attractive, there is a need to go beyond traditional heat integration and water recycling techniques. Thus, we propose a strategy based on mathematical programming techniques to model and optimize the structure of the processes, and perform heat integration including the use of multi-effect distillation columns and integrated water networks to show that the energy efficiency and water consumption in bioethanol plants can be significantly improved. Specifically, under some circumstances energy can even be produced and the water consumption can be reduced below the values required for the production of gasoline.
A third-order discrete unified gas kinetic scheme for continuum and rarefied flows: low-speed isothermal case
Creators: name: Wu, Chen
name: Shu, Chang
name: Shi, Baochang
name: Chen, Zhen
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An efficient third-order discrete unified gas kinetic scheme (DUGKS) with efficiency is presented in this work for simulating continuum and rarefied flows. By employing two-stage time-stepping scheme and the high-order DUGKS flux reconstruction strategy, third-order of accuracy in both time and space can be achieved in the present method. It is also analytically proven that the second-order DUGKS is a special case of the present method. Compared with the high-order lattice Boltzmann equation {LBE} based methods, the present method is capable to deal with the rarefied flows by adopting the Newton-Cotes quadrature to approximate the integrals of moments. Instead of being constrained by the second-order (or lower-order) of accuracy in time splitting scheme as in the conventional high-order Runge-Kutta (RK) based kinetic methods, the present method solves the original BE, which overcomes the limitation in time accuracy. Typical benchmark tests are carried out for comprehensive evaluation of the present method. It is observed in the tests that the present method is advantageous over the original DUGKS in accuracy and capturing delicate flow structures. Moreover, the efficiency of the present third-order method is also shown in simulating rarefied flows.
Likelihood-based estimation of substructure content from single-wavelength anomalous diffraction (SAD) intensity data.
Creators: name: Hatti, Kaushik S
name: McCoy, Airlie J
name: Read, Randy J
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Phasing
Likelihood
Substructure
Single-wavelength Anomalous Diffraction

description: SAD phasing can be challenging when the signal-to-noise ratio is low. In such cases, having an accurate estimate of the substructure content can determine whether or not the substructure of anomalous scatterer positions can successfully be determined. Here, a likelihood-based target function is proposed to accurately estimate the strength of the anomalous scattering contribution directly from the measured intensities, determining a complex correlation parameter relating the Bijvoet mates as a function of resolution. This gives a novel measure of the intrinsic anomalous signal. The SAD likelihood target function also accounts for correlated errors in the measurement of intensities from Bijvoet mates, which can arise from the effects of radiation damage. When the anomalous signal is assumed to come primarily from a substructure comprising one anomalous scatterer with a known value of f'' and when the protein composition of the crystal is estimated correctly, the refined complex correlation parameters can be interpreted in terms of the atomic content of the primary anomalous scatterer before the substructure is known. The maximum-likelihood estimation of substructure content was tested on a curated database of 357 SAD cases with useful anomalous signal. The prior estimates of substructure content are highly correlated to the content determined by phasing calculations, with a correlation coefficient (on a log-log basis) of 0.72.
Enantioselectivity on Surfaces with Chiral Nanostructures
Creators: name: Rampulla, David M
name: Gellman, Andrew J
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: Chirality is a critical property of amino acids that form proteins, the building blocks of life, and of DNA, which encodes the genetic traits passed from one generation to the next. Furthermore, chirality can be observed throughout nature in objects ranging from spiral seashells to the human hands. If an object and its mirror image are nonsuperimposable, then they have the property of chirality. This property is found in nearly every biological molecule and in many synthetic bioactive molecules such as pharmaceuticals and agrochemicals. From a practical perspective, the importance of molecular chirality arises from the fact that the two mirror images of a chiral molecule, known as enantiomers, can have vastly different physiological impacts when ingested by living organisms. As a result, it is necessary to produce many chiral compounds in enantiomerically pure form.[1] Understanding chirality and enantioselectivity is critical to the development of the separations and reactions used to achieve enantiopurity. Many processes used in chemical production involve solid surfaces and can be made enantioselective by using chiral surfaces. There are three common types of chiral surfaces: surfaces modified by chiral organic adsorbates, surfaces of any naturally chiral bulk crystalline solid, and chiral surfaces prepared from achiral bulk crystals. A number of studies have shown that such chiral surfaces exhibit enantiospecific properties when exposed to chiral species in either the gas phase or in solution. Although chirality is simply a symmetry property of an object or an extended lattice, the enantiospecificity of surfaces is derived from the local structure of nanoscale features such as molecular adsorbates, or specific arrangements of atoms at a crystal surface. Experimental and theoretical work to elucidate the properties of these nanostructured surfaces is an active area of research in surface chemistry. Although a number of aspects of the enantioselectivity of chiral surfaces are now understood, many unanswered questions remain as topics of ongoing research in the field.
Applicare il pensiero critico attraverso un artefatto: l'argomentazione come punto di partenza per sviluppare un pensiero critico e riflessivo
Creators: name: Pura, Kevin
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021
Subjects: geografia
pensiero critico
plastico
argomentazione

description: La seguente Tesi di Bachelor è stata progettata con lo scopo di indagare le modalità di applicazione del pensiero critico dei bambini, dell’età di dieci anni, in relazione all’assenza e alla presenza della rappresentazione fisica dell’oggetto di studio, nel caso specifico: di un plastico. La ricerca indaga un numero di campioni limitato, la classe è composta da soli diciassette allievi, i quali hanno svolto tutte le attività del percorso suddivisi in quattro gruppi di lavoro. Al fine di raccogliere delle informazioni il più complete possibile, le diverse attività proposte alla classe sono state filmate e le discussioni sono state trascritte. In aggiunta, attraverso un’intervista sono state raccolte le considerazioni dei bambini in merito a quale discussione, se con o senza il plastico, ha permesso loro di argomentare meglio le idee esposte ai compagni. L’analisi dei dati raccolti ha confermato le mie ipotesi portandomi alla seguente conclusione: la disponibilità di una rappresentazione fisica dell’oggetto di studio sostiene i bambini nell’atto di comunicare e, di conseguenza, agevola la messa in gioco del pensiero critico. Relatore: Marco Lupatini.
title: ADCO, Cart. 186 (11 H 71), f. 0249r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0249r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Diffusional Kurtosis Imaging in the Diffusion Imaging in Python Project
Creators: name: Henriques, Rafael Neto
name: Correia, Marta M.
name: Marrale, Maurizio
name: Huber, Elizabeth
name: Kruper, John
name: Koudoro, Serge
name: Yeatman, Jason D.
name: Garyfallidis, Eleftherios
name: Rokem, Ariel
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Human Neuroscience
MRI
diffusion MRI
DKI
DTI
microstructure
open-source software
biophysics
python

description: Diffusion-weighted magnetic resonance imaging (dMRI) measurements and models provide information about brain connectivity and are sensitive to the physical properties of tissue microstructure. Diffusional Kurtosis Imaging (DKI) quantifies the degree of non-Gaussian diffusion in biological tissue from dMRI. These estimates are of interest because they were shown to be more sensitive to microstructural alterations in health and diseases than measures based on the total anisotropy of diffusion which are highly confounded by tissue dispersion and fiber crossings. In this work, we implemented DKI in the Diffusion in Python (DIPY) project—a large collaborative open-source project which aims to provide well-tested, well-documented and comprehensive implementation of different dMRI techniques. We demonstrate the functionality of our methods in numerical simulations with known ground truth parameters and in openly available datasets. A particular strength of our DKI implementations is that it pursues several extensions of the model that connect it explicitly with microstructural models and the reconstruction of 3D white matter fiber bundles (tractography). For instance, our implementations include DKI-based microstructural models that allow the estimation of biophysical parameters, such as axonal water fraction. Moreover, we illustrate how DKI provides more general characterization of non-Gaussian diffusion compatible with complex white matter fiber architectures and gray matter, and we include a novel mean kurtosis index that is invariant to the confounding effects due to tissue dispersion. In summary, DKI in DIPY provides a well-tested, well-documented and comprehensive reference implementation for DKI. It provides a platform for wider use of DKI in research on brain disorders and in cognitive neuroscience.
On the compared accuracy and reliability of spectroscopic and photometric redshift measurements
Creators: name: Fernandez-Soto, Alberto
name: Lanzetta, Kenneth M.
name: Chen, Hsiao-Wen
name: Pascarelle, Sebastian M.
name: Yahata, Noriaki
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comparison between the spectroscopic catalog of the HDF recently published by Cohen et al and the redshifts measured by our group for those objects using photometric techniques. We perform this comparison in order to characterize the errors associated to the photometric redshift technique. The spectroscopic sample includes over 140 objects in the HDF proper, representing the deepest, cleanest, most complete spectroscopic catalog ever compiled. We study each object for which our redshift and the one measured by Cohen et al disagree. In most cases the photometric evidence is strong enough to call for a careful review of the spectroscopic values, as they seem to be in error. It is possible to characterize the systematic errors associated to our technique, which when combined with the photometric errors allow us to obtain complete information on the redshift of each galaxy and its associated confidence interval, regardless of apparent magnitude. One of the main conclusions of this study is that, to date, all the redshifts from our published catalog that have been checked have been shown to be correct (within the stated confidence limits). This implies that our galaxy template set is a fair representation of the galaxy population at all redshifts (0
description: Accepted for publication in ApJSS. Minor changes in presentation and discussion. No changes to main results. ApJ preprint format, 27 pages, 16 embedded figures
Channel Access Method Classification For Cognitive Radio Applications
Creators: name: Laghate, Mihir
name: Urriza, Paulo
name: Cabric, Danijela
Publisher: name: arXiv
Year: 2017
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Motivated by improved detection and prediction of temporal holes, we propose a two stage algorithm to classify the channel access method used by a primary network. The first stage extends an existing fourth-order cumulant-based modulation classifier to distinguish between TDMA, OFDMA, and CDMA. The second stage proposes a novel collision detector using the sample variance of the same cumulant to detect contention-based channel access methods. Our proposed method is blind and independent of the received SNR. Simulations show that our classification of TDMA, OFDMA, and CDMA is robust to network load while detection of contention outperforms existing methods.
description: Accepted to IEEE Wireless Communications Letters
Recycled Noise Rectification: A Dumb Maxwell's Daemon
Creators: name: Borromeo, M.
name: Giusepponi, S.
name: Marchesoni, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The one dimensional motion of a massless Brownian particle on a symmetric periodic substrate can be rectified by re-injecting its driving noise through a realistic recycling procedure. If the recycled noise is multiplicatively coupled to the substrate, the ensuing feed-back system works like a passive Maxwell's daemon, capable of inducing a net current that depends on both the delay and the autocorrelation times of the noise signals. Extensive numerical simulations show that the underlying rectification mechanism is a resonant nonlinear effect: The observed currents can be optimized for an appropriate choice of the recycling parameters with immediate application to the design of nanodevices for particle transport.
description: 7 pages, 6 figures
Elasto-capillary thinning and breakup of model elastic liquids
Creators: name: Anna, Shelley
name: McKinley, Gareth H
Publisher: name: Carnegie Mellon University
Year: 2001
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: We study the elasto-capillary self-thinning and ultimate breakup of three polystyrene-based ideal elastic fluids by measuring the evolution in the filament diameter as slender viscoelastic threads neck and eventually break. We examine the dependence of the transient diameter profile and the time to breakup on the molecular weight, and compare the observations with simple theories for breakup of slender viscoelastic filaments. The evolution of the transient diameter profile predicted by a multimode FENE-P model quantitatively matches the data provided the initial stresses in the filament are taken into account. Finally, we show how the transient uniaxial extensional viscosity of a dilute polymer solution can be estimated from the evolution in the diameter of the necking filament. The resulting ‘‘apparent extensional viscosity’’ profiles are compared with similar results obtained from a filament stretching rheometer. Both transient profiles approach the same value for the steady state extensional viscosity, which increases with molecular weight in agreement with the Rouse–Zimm theory. The apparent discrepancy in the growth rate of the two transient curves can be quantitatively explained by examining the effective stretch rate in each configuration. Filament thinning studies and filament stretching experiments thus form complementary experiments that lead to consistent measures of the transient extensional viscosity of a given test fluid.
Evolution of the Global Risk Network Mean-Field Stability Point
Creators: name: Niu, Xiang
name: Moussawi, Alaa
name: Derzsy, Noemi
name: Lin, Xin
name: Korniss, Gyorgy
name: Szymanski, Boleslaw K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: With a steadily growing human population and rapid advancements in technology, the global human network is increasing in size and connection density. This growth exacerbates networked global threats and can lead to unexpected consequences such as global epidemics mediated by air travel, threats in cyberspace, global governance, etc. A quantitative understanding of the mechanisms guiding this global network is necessary for proper operation and maintenance of the global infrastructure. Each year the World Economic Forum publishes an authoritative report on global risks, and applying this data to a CARP model, we answer critical questions such as how the network evolves over time. In the evolution, we compare not the current states of the global risk network at different time points, but its steady state at those points, which would be reached if the risk were left unabated. Looking at the steady states show more drastically the differences in the challenges to the global economy and stability the world community had faced at each point of the time. Finally, we investigate the influence between risks in the global network, using a method successful in distinguishing between correlation and causation. All results presented in the paper were obtained using detailed mathematical analysis with simulations to support our findings.
description: 11 pages, 5 figures, the 6th International Conference on Complex Networks and Their Applications
Probing inflation with precision bispectra
Creators: name: Clarke, Philip
name: Shellard, E.P.S.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: paper
inflation
non-gaussianity

description: Abstract: Calculating the primordial bispectrum predicted by a model of inflation and comparing it to what we see in the sky is very computationally intensive, necessitating layers of approximations and limiting the models which can be constrained. Exploiting the inherent separability of the tree level in-in formalism using expansions in separable basis functions provides a means by which to obviate some of these difficulties. Here, we develop this approach further into a practical and efficient numerical methodology which can be applied to a much wider and more complicated range of bispectrum phenomenology, making an important step forward towards observational pipelines which can directly confront specific models of inflation. We describe a simple augmented Legendre polynomial basis and its advantages, then test the method on single-field inflation models with non-trivial phenomenology, showing that our calculation of these coefficients is fast and accurate to high orders.
The Beam Halo Experiment at the LEDA Facility
Creators: name: Colestock, P. L.
name: Wangler, T.
name: Allen, C. K.
name: Sheffield, R. L.
name: Gilpatrick, D.
name: Thuot, M.
name: Team, the LEDA Operations
name: Schulze, M.
name: Harvey, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Due to the potentially adverse effects of the generation of halo particles in intense proton beams, it is imperative to have a clear understanding of the mechanisms that can lead to halo formation for current and proposed high- intensity linacs. To this end a theoretical model has been developed, which indicates that protons under the combined influence of strong space charge forces and periodic focussing in a linear transport channel can be kicked into halo orbits. However, no experimental measurements of beam halo in proton beams have yet been carried out. In this paper we report the progress of an effort to carry out an experiment to measure beam-halo using the existing high- intensity proton beam of the LEDA facility. A linear transport channel has been assembled with the appropriate diagnostics for measuring the expected small beam component in the beam halo as a function of beam parameters. The experiment is based on the use of an array of high-dynamic-range wire and beam scrapers to determine the halo and core profiles along the transport channel. Details of the experimental design, the expected halo measurement properties will be presented.
description: Submitted to Linac2000, Monterey, Aug. 21st-25th, 2000
Electrostatic self-interaction in the spacetime of a global monopole with finite core
Creators: name: de Mello, E. R. Bezerra
name: Saharian, A. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we calculate the induced electrostatic self-energy and self-force for an electrically charged particle placed at rest in the spacetime of a global monopole admitting a general spherically symmetric inner structure to it. In order to develop this analysis we calculate the three-dimensional Green function associated with this physical system. We explicitly show that for points outside the monopole's core the self-energy presents two distinct contributions. The first is induced by the non-trivial topology of the global monopole considered as a point-like object. The second is a correction induced by the non-vanishing inner structure attributed to it. As an illustration of the general procedure the flower-pot model for the region inside the monopole is considered. In this application it is also possible to find the electrostatic self-energy for points in the region inside the monopole. In the geometry of the global monopole with the positive solid angle deficit, we show that for the flower-pot model the electrostatic self-force is repulsive with respect to the core surface for both exterior and interior regions.
description: 13 pages, 2 figures
The Implications of COVID-19 for Early Childhood Education in Ethiopia: Perspectives from Parents and Caregivers
Creators: name: Kim, Janice H.
name: Araya, Mesele
name: Hailu, Belay Hagos
name: Rose, Pauline M.
name: Woldehanna, Tassew
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
Early childhood education
Early learning
COVID-19
Parental involvement
Educational inequality

description: Funder: World Bank Group (US)
description: Funder: Foreign and Commonwealth Office; doi: http://dx.doi.org/10.13039/501100000617
description: Abstract: Recent research on the effects of COVID-19 on school closures has mainly focused on primary and secondary education, with extremely limited attention to early childhood education (ECE). To address this gap, we identify the extent to which parents and caregivers with pre-primary school-aged children were engaged in their children’s learning during school closures in Ethiopia. Our focus on Ethiopia is of particular relevance given that ECE provision has expanded dramatically in recent years, aimed at ensuring children are prepared for primary school. Using data collected through a phone survey with 480 parents and caregivers, the results revealed that learning disruption due to COVID-19 school closures is likely to be substantial and will probably widen existing inequalities further. Many poorer households and those where parents or caregivers are not literate, are less likely to have child-oriented learning resources, and home learning activities between parents and children in these households are limited. The study highlights that greater attention needs to be paid to mitigate the threats of COVID-19 on Ethiopia’s recent gains in ECE, to prevent the pandemic from further reinforcing inequalities between children from advantaged and disadvantaged households.
"Dimmi a cosa pensi...": teoria della mente e disturbo dello spettro autistico
Creators: name: Sakic-Marchi, Alice
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2023
Subjects: disturbo dello spettro autistico
teoria della mente
falsa credenza
funzioni esecutive
linguaggio
pensieri
test di primo e secondo ordine

description: Questo lavoro di tesi mira a indagare in che modo le abilità nella teoria della mente nei bambini con disturbo dello spettro autistico (DSA) si differenziano da quelle di bambini a sviluppo tipico. In collaborazione con un gruppo di ricerca dell’Università di Friburgo, la ricerca è stata effettuata su un campione di 5 bambini con DSA e 5 con sviluppo tipico, le cui performance sono state comparate, e su un ulteriore campione di 8 bambini a sviluppo tipico della mia sezione di pratica professionale. Sono stati svolti diversi test con l’ausilio di un gioco creato per l’iPad, che mira a testare le abilità di teoria della mente di questi bambini. L’ipotesi iniziale posta è che i bambini con DSA otterranno risultati inferiori rispetto ai bambini con sviluppo tipico nei compiti di teoria della mente. I dati raccolti non confermano l’ipotesi, in quanto i bambini con DSA hanno ottenuto risultati simili o superiori rispetto ai loro coetanei a sviluppo tipico. Relatore: Nicola Rudelli.
La Universidad | [He aquí un libro-uno de los tantos-perteneciente]
Creators: name: Carlos, Real de Azúa
name: Real De Azúa Carlos
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Pedagogía

description: Fotocopia de una versión de un manuscrito del libro titulado La Universidad, de Carlos Real de Azúa, publicado por CELADU, en Montevideo, en 1992.
description: Source: Código: AS-CB3-06
description: Source: Localización: Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
description: Bibliographic citation: Real de Azúa, Carlos, « La Universidad », Montevideo: CELADU, 1992, 204 p.
description: created: s.f.
description: available: Fecha de creación de la reseña: 2020-04-02
Magnetic properties of spin-orbital polarons in lightly doped cobaltates
Creators: name: Daghofer, M.
name: Horsch, P.
name: Khaliullin, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a numerical treatment of a spin-orbital polaron model for Na_xCoO_2 at small hole concentration (0.7 < x < 1). We demonstrate how the polarons account for the peculiar magnetic properties of this layered compound: They explain the large susceptibility; their internal degrees of freedom lead both to a negative Curie-Weiss temperature and yet to a ferromagnetic intra-layer interaction, thereby resolving a puzzling contradiction between these observations. We make specific predictions on the momentum and energy location of excitations resulting from the internal degrees of freedom of the polaron, and discuss their impact on spin-wave damping.
description: 4+ pages, 6 figures, accepted for publication in Phys. Rev. Lett
Efficient optimization algorithms for zero wait scheduling of multiproduct batch plants
Creators: name: Birewar, Deepak B.
name: Grossmann, Ignacio E.
name: Carnegie Mellon University.Engineering Design Research Center.
Publisher: name: Carnegie Mellon University
Year: 1989
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: Abstract: "This paper deals with the scheduling of multiproduct batch plants consisting of one unit per stage and involving the production of large number of batches of relatively few products (e. g. 10-50) with the Zero-Wait policy. An aggregation procedure based on a compact linear programming model is proposed for determining the minimum cycle time and the family of schedules with the optimum cycle time. It is shown that schedules can be easily derived from the LP solution using an aggregated graph representation. It is also shown that using this representation an approximate MILP model that yields very good near optimal solutions can be derived for the makespan minimization problem and for which very tight bounds can be established. The insights gained with this approximate method are used to formulate a rigorous MILP model which can be solved as an LP in most cases. The effectiveness of the proposed procedures is illustrated with several example problems."
The Onset of Methane in L Dwarfs
Creators: name: Noll, Keith S.
name: Geballe, T. R.
name: Leggett, S. K.
name: Marley, Mark S.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have detected weak absorption features produced by the strong nu(3) methane band at 3.3 microns in two L dwarfs, 2MASSW J1507476-162738 and 2MASSI J0825196+211552, classified by Kirkpatrick et al. (2000) as spectral types L5 and L7.5 respectively. These absorptions occur in objects warmer than any in which methane previously has been detected, and mark the first appearance of methane in the ultracool star-to-brown dwarf spectral sequence.
description: 12 pages, 2 figures; accepted by ApJ Letters
Quantum Scattering in an Optical Collider for Ultracold Atoms
Creators: name: Thomas, Ryan
name: Chilcott, Matthew
name: Chisholm, Craig
name: Deb, Amita B.
name: Horvath, Milena
name: Sawyer, Bianca J.
name: Kjærgaard, Niels
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on experiments investigating the collisional properties of atoms at ultralow collision energies using an all-optical atom collider. By using a pair of optical tweezers, we can manipulate two ultracold atom clouds and collide them together at energies up to three orders of magnitude larger than their thermal energy. Our experiments measure the scattering of $\rm ^{87}Rb$, $\rm ^{40}K$, and $\rm ^{40}K$-$\rm ^{87}Rb$ collisions. The versatility of our collider allows us to probe both shape resonances and Feshbach resonances in any partial wave. As examples, we present experiments demonstrating p-wave scattering with indistinguishable fermions, inelastic scattering at non-zero energies near a homonuclear Feshbach resonance, and partial wave interference in heteronuclear collisions.
description: Proceedings of ICPEAC XXX, to appear in J. Phys. Conf. Ser
The risk factors of diabetic ketosis and diabetic ketoacidosis among patients with type 2 diabetes mellitus treated with SGLT2 inhibitors: a retrospective study
Creators: name: Zhao, Qingnan
name: Tan, Yijiong
name: Wu, Qinqin
name: Xiao, Xiangqin
name: Wei, Xinyi
name: Nian, Mengqing
name: Yao, Jie
name: Fan, Nengguang
name: Wang, Ruiping
name: Fan, Guorong
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Medicine
Pharmacology
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Virology

description: There is limited evidence on the safety of sodium-glucose co-transporter-2 inhibitor (SGLT2i) use in the real world of China. We conducted this two-center, retrospective study to assess the incidence rate and risk factors of Dapagliflozin-associated DK/DKA among patients with type 2 diabetes mellitus (T2DM) in China. Patients with T2DM treated with Dapagliflozin in Shanghai General Hospital were included in this retrospective analysis. Univariate and multivariate logistic regression was performed, and odds ratio (OR) and 95% confidence interval (CI) were calculated to identify the influencing factors associated with the occurrence of DK/DKA. A total of 1985 T2DM patients received Dapagliflozin for the first time were included. The prevalence of DK and DKA was 2.47% and 0.35%, respectively. Multivariate logistic regression identified age <45 years [OR = 2.99, 95% CI (1.45–6.17)], concomitant use of Acarbose [OR = 2.18, 95% CI (1.06–3.38)], Metformin [OR = 1.84, 95% CI (1.01–3.38)], and Insulin [OR = 1.93, 95% CI (1.02–3.66)] as participating factors for DK/DKA. The 1:4 matched subset sensitivity analysis further confirmed the risk factors of Dapagliflozin-associated DK/DKA. Age less than 45 years, concomitant use of Acarbose and insulin were risk factors for Dapagliflozin-associated DK/DKA. Clinicians should watch out for high-risk features among patients with SGLT2i prescription.