cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Migranti a Lampedusa: cronaca di un’emergenza
Creators: name: Morcellini, Mario
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: L'informazione sull’immigrazione, nonostante l’Italia abbia oramai su
questo tema una storia trentennale, conosce negli anni modalità narrative
sostanzialmente simili, quasi a rappresentare staticamente un
fenomeno che di fatto si distingue per l’eterno movimento. Le recenti ricerche
sull’immagine dell’immigrazione nei media d’informazione italiani1 confermano
le tendenze e i risultati raccolti negli anni: lo spazio giornalistico
dedicato al tema è prevalentemente quello della cronaca nera e la cornice interpretativa continua ad essere quella dell’emergenza.
Le vicende di Lampedusa sono proposte dai media, appunto, come cronache
di un’emergenza caratterizzata dal flusso costante di barconi colmi di
migranti che giungono disperati sulle coste italiane in un generale clima di
preoccupazione e di allarme. Sembra che vi sia una tendenza a soffermarsi
sui particolari, sui “numeri” del fenomeno, definito nelle prime battute dei
giornalisti e della politica “esodo biblico” o “tsunami umano”, sottolineando
così la drammaticità dell’evento: il tutto a discapito dell’approfondimento e
dell’interpretazione dei fatti che aiuterebbero il pubblico a comprendere meglio
la situazione.
description: Semestrale di studi e ricerche di geografia, N. 2 (2011): Unità d'Italia e trasformazioni territoriali a cura di Riccardo Morri
Il sistema sociale ed economico della Corsica alla fine del XVIII secolo
Creators: name: Dal Passo, Fabrizio
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2018

description: Le fonti storiche relative alla società corsa ed al suo sviluppo tra l'XI ed il XIX secolo sono scarse e solo recentemente sono stati affrontati studi in grado di fornire un quadro esauriente delle realtà isolane in età moderna. Le forme d'organizzazione sociale del lavoro agricolo hanno sempre avuto una struttura dualista: coltura ed organizzazione familiare da un lato; dall'altro, gestione-regolamentazione comunitaria dei beni, dei mezzi di produzione e degli spazi agrari, nella scala della pieve, del villaggio e della pieve ed, in seguito, solo del villaggio. Questi sono i poli opposti della vita sociale nelle campagne corse. Con un'evoluzione fatta sia di permanenze, che di mutazioni e di tensioni, questa struttura si ripete dall'XI al XIX secolo; tuttavia, sia la proprietà ed i modi di gestione familiare, sia i diritti e le regolamentazioni comunitarie, nei loro rispettivi rapporti, subiscono dei cambiamenti nel lungo periodo. Il processo si accompagna all'evoluzione dei rapporti tra le classi, che si organizzano nel quadro della struttura dualista. Questa struttura subisce, a sua volta, una trasformazione interna, come accade per i conflitti agrari di cui essa è, ad un tempo, causa ed effetto: nel corso dei secoli, infatti, il lavoro produttivo si perfeziona ed acquista maggiore complessità. Le tappe sono lunghe e diverse a seconda delle regioni, con grande disparità tra il Diquà ed il Dilà.
description: Semestrale di studi e ricerche di geografia, N. 1 (2002): Il sistema sociale ed economico della Corsica alla fine del XVIII secolo
CFL Optimized Forward-Backward Runge-Kutta Schemes for the Shallow Water Equations
Creators: name: Lilly, Jeremy R.
name: Engwirda, Darren
name: Capodaglio, Giacomo
name: Higdon, Robert L.
name: Petersen, Mark R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present the formulation and optimization of a Runge-Kutta-type time-stepping scheme for solving the shallow water equations, aimed at substantially increasing the effective allowable time-step over that of comparable methods. This scheme, called FB-RK(3,2), uses weighted forward-backward averaging of thickness data to advance the momentum equation. The weights for this averaging are chosen with an optimization process that employs a von Neumann-type analysis, ensuring that the weights maximize the admittable Courant number. Through a simplified local truncation error analysis and numerical experiments, we show that the method is at least second order in time for any choice of weights and exhibits low dispersion and dissipation errors for well-resolved waves. Further, we show that an optimized FB-RK(3,2) can take time-steps up to 2.8 times as large as a popular three-stage, third-order strong stability preserving Runge-Kutta method in a quasi-linear test case. In fully nonlinear shallow water test cases relevant to oceanic and atmospheric flows, FB-RK(3,2) outperforms SSPRK3 in admittable time-step by factors between roughly between 1.6 and 2.2, making the scheme approximately twice as computationally efficient with little to no effect on solution quality.
Il concetto di regione nella storia del pensiero geografico del XX secolo
Creators: name: Muscarà, Calogero
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2018

description: Un anno dopo la pubblicazione del saggio dello Schaefer sull'"eccezionalismo" in geografia, da cui si fa tradizionalmente incominciare la cosiddetta "rivoluzione quantitativa" della disciplina, una commissione di geografi americani licenziava alle stampe un esteso rapporto sul concetto di regione e sul metodo della geografia regionale, che può essere considerato a ragione lo spartiacque tra le due concezioni della geografia che si dividono il XX secolo (Schaefer 1953, Whittlesey 1954).
description: Semestrale di studi e ricerche di geografia, N. 2 (2001): Il concetto di regione nella storia del pensiero geografico del XX secolo
PET monitoring of cancer therapy with He-3 and C-12 beams: a study with the GEANT4 toolkit
Creators: name: Pshenichnov, Igor
name: Larionov, Alexei
name: Mishustin, Igor
name: Greiner, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We study the spatial distributions of $β^+$-activity produced by therapeutic beams of $^3$He and $^{12}$C ions in various tissue-like materials. The calculations were performed within a Monte Carlo model for Heavy-Ion Therapy (MCHIT) based on the GEANT4 toolkit. The contributions from $^{10,11}$C, $^{13}$N, $^{14,15}$O, $^{17,18}$F and $^{30}$P positron-emitting nuclei were calculated and compared with experimental data obtained during and after irradiation. Positron emitting nuclei are created by $^{12}$C beam in fragmentation reactions of projectile and target nuclei. This leads to a $β^+$-activity profile characterised by a noticeable peak located close to the Bragg peak in the corresponding depth-dose distribution. On the contrary, as the most of positron-emitting nuclei are produced by $^3$He beam in target fragmentation reactions, the calculated total $β^+$-activity during or soon after the irradiation period is evenly distributed within the projectile range. However, we predict also the presence of $^{13}$N, $^{14}$O, $^{17,18}$F created in charge-transfer reactions by low-energy $^3$He ions close to the end of their range in several tissue-like media. The time evolution of $β^+$-activity profiles was investigated for both kinds of beams. Due to the production of $^{18}$F nuclide the $β^+$-activity profile measured 2 or 3 hours after irradiation with $^{3}$He ions will have a distinct peak correlated with the maximum of depth-dose distribution. We found certain advantages of low-energy $^{3}$He beams over low-energy proton beams for reliable PET monitoring during particle therapy of shallow located tumours. In this case the distal edge of $β^+$-activity distribution from $^{17}$F nuclei clearly marks the range of $^{3}$He in tissues.
La Via degli Abruzzi nella struttura viaria della regione
Creators: name: De Santis, Giovanni
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: Via degli Abruzzi in the regional road routes path
The geomorphological structure of a territory may be critical for the location of road routes. Such is the case with the historical Via degli Abruzzi that in its path takes advantage of the physical conditions along paths which run in the valleys of Abruzzo and Molise. The Abruzzo, in fact, has four fundamental axis, two longitudinal and two transverse colon that have always made possible communications with the rest of Italy. The route used by Via degli Abruzzi runs within the region and connects Florence with Naples passing through Perugia, L’Aquila, Sulmona, Isernia and Capua.

Via degli Abruzzi dans le chemin régional des itinéraires
La structure géomorphologique d’un territoire peut être très importante pour localiser les itinéraires routiers. C’est le cas de la fameuse Via degli Abruzzi qui, tout le long du trajet, profite des conditions physiques des chemins qui traversent les vallées des Abruzzes et du Molise. Les Abruzzes présentent, en effet, quatre axes routiers fondamentaux, deux longitudinaux et deux transversaux, qui ont toujours assuré la communication avec le reste de l’Italie. L’itinéraire utilisé par la Via degli Abruzzi traversait le coeur de la région et la reliait avec Florence et avec Naples en passant par Péruse, l’Aquila, Sulmona, Isernia et Capoue.
description: Semestrale di studi e ricerche di geografia, N. 2 (2016)
Maximally Supersymmetric Planar Yang-Mills Amplitudes at Five Loops
Creators: name: Bern, Z.
name: Carrasco, J. J. M.
name: Johansson, H.
name: Kosower, D. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an ansatz for the planar five-loop four-point amplitude in maximally supersymmetric Yang-Mills theory in terms of loop integrals. This ansatz exploits the recently observed correspondence between integrals with simple conformal properties and those found in the four-point amplitudes of the theory through four loops. We explain how to identify all such integrals systematically. We make use of generalized unitarity in both four and D dimensions to determine the coefficients of each of these integrals in the amplitude. Maximal cuts, in which we cut all propagators of a given integral, are an especially effective means for determining these coefficients. The set of integrals and coefficients determined here will be useful for computing the five-loop cusp anomalous dimension of the theory which is of interest for non-trivial checks of the AdS/CFT duality conjecture. It will also be useful for checking a conjecture that the amplitudes have an iterative structure allowing for their all-loop resummation, whose link to a recent string-side computation by Alday and Maldacena opens a new venue for quantitative AdS/CFT comparisons.
description: 52 pages, 20 figures, revtex
Il problema della longitudine: Vespucci e Verrazzano
Creators: name: Negri, Mario
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: The Problem of Longitude: Vespucci and Verrazzano
The aim of this study is to delineate the theoretical and methodological principles of two pioneering attempts to solve the longitude problem in the Atlantic Ocean, in the light of available documentation. As the great transoceanic voyages began, between the end of the XV century and Cook’s time, the problem of accurate measurement of longitude at sea, on long voyages out of sight of land, became crucial and its astronomical solution highly desirable. Vespucci adopted the “lunar distance” method, while Verrazzano’s method was based on the observation of the elevation of the sun.
However, despite some inaccuracy, the two Italian navigators succeeded in
identifying correct theoretical principles, providing a fundamental contribution to
the solution of the longitude problem. This was solved many years later, thanks to more accurate astronomical data and careful observation.

Le problème de la longitude: Vespucci et Verrazzano
Le but de cette étude est de définir les principes théoriques et méthodologiques de deux tentatives novatrices, pour l’époque, finalisées à résoudre le problème de la longitude dans l’océan Atlantique, à la lumière de la documentation disponible. Lors des premiers grands voyages transocéaniques, entre la fin du XVe siècle et l’époque de Cook, le problème de la mesure précise de la longitude en mer est devenu crucial pour les navigations hors de la vue de la terre et la solution envisagée, hautement souhaitable, impliquait l’astronomie. Vespucci a adopté la méthode dite de la «distance lunaire», tandis que Verrazzano a mis au point une méthode basée sur l’observation de l’élévation solaire. Malgré quelques inexactitudes, les deux navigateurs italiens ont réussi à identifier les principes théoriques corrects, fournissant une contribution fondamentale à la solution du problème de la longitude. Ce n’est que plusieurs années plus tard que le problème a été définitivement résolu, grâce à l’observation attentive de données astronomiques plus précises.
description: Semestrale di studi e ricerche di geografia, N. 2 (2016)
On extended homogenization formalisms for nanocomposites
Creators: name: Mackay, Tom G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In a long wavelength regime, the effective properties of particulate composites, including nanocomposites, may be estimated using one of various homogenization formalisms, such as the Bruggeman and Maxwell Garnett formalisms, and the approach of the strong--property--fluctuation theory (SPFT). In the conventional implementations of these formalisms, the constituent particles are treated as point--like scattering centres. However, extended formalisms have been established--which involve integral formulations--that take account of the spatial extent of the constituent particles. In particular, the extended second--order SPFT takes account of both the size of the constituent particles and their statistical distributions. We derive explicit representations of the extended second--order SPFT appropriate to isotropic chiral and uniaxial dielectric homogenized composite mediums. These results may also be employed in extended versions of the Bruggeman and Maxwell Garnett formalisms.
XV Edizione Giornate della Geografia: Geografie d’Italia e d’Europa Roma, 26-28 maggio 2011
Creators: name: Zacheo, Annalisa
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: Nei giorni 26-28 maggio 2011, si è svolta a Roma, nell’ambito delle
iniziative promosse dall’Università di Roma “Tor Vergata” per le celebrazioni
del 150° dell’Unità d’Italia, la XV Edizione delle Giornate delle Geografia, dal titolo “Geografie d’Italia e d’Europa”. Il Convegno annuale dell’Associazione dei Geografi Italiani (AGeI) – organizzato dal Dipartimento di Economia e Territorio (DET) e coordinato da Maria Prezioso –, è stato inscritto dagli stessi organizzatori nell’ambito di «un progetto culturale che vede nella Geografia il territorio, complessità e “filo rosso” capace di unire, anticipare ed indirizzare lo sviluppo (infraregionale, interregionale, sovranazionale)». La Conferenza, inoltre, ha rappresentato una piattaforma privilegiata per la conoscenza e la diffusione dell’apporto dato dalla Geografia allo sviluppo di alcune ricerche e progetti promossi dal Programma European Spatial Planning Observation Network (ESPON) 2013 e finalizzati a sostenere la Commissione nella migliore attuazione delle politiche territoriali nello spazio nazionale, regionale e metropolitano dell’Unione europea.
description: Semestrale di studi e ricerche di geografia, N. 2 (2011): Unità d'Italia e trasformazioni territoriali a cura di Riccardo Morri
An efficient and straightforward online quantization method for a data stream through remove-birth updating
Creators: name: Fujita, Kazuhisa
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: The growth of network-connected devices has led to an exponential increase in data generation, creating significant challenges for efficient data analysis. This data is generated continuously, creating a dynamic flow known as a data stream. The characteristics of a data stream may change dynamically, and this change is known as concept drift. Consequently, a method for handling data streams must efficiently reduce their volume while dynamically adapting to these changing characteristics. This paper proposes a simple online vector quantization method for concept drift. The proposed method identifies and replaces units with low win probability through remove-birth updating, thus achieving a rapid adaptation to concept drift. Furthermore, the results of this study show that the proposed method can generate minimal dead units even in the presence of concept drift. This study also suggests that some metrics calculated from the proposed method will be helpful for drift detection.
High fidelity all-optical control of quantum dot spins: detailed study of the adiabatic approach
Creators: name: Gauger, Erik M.
name: Benjamin, Simon C.
name: Nazir, Ahsan
name: Lovett, Brendon W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Confined electron spins are preferred candidates for embodying quantum information in the solid state. A popular idea is the use of optical excitation to achieve the ``best of both worlds'', i.e. marrying the long spin decoherence times with rapid gating. Here we study an all-optical adiabatic approach to generating single qubit phase gates. We find that such a gate can be extremely robust against the combined effect of all principal sources of decoherence, with an achievable fidelity of 0.999 even at finite temperature. Crucially this performance can be obtained with only a small time cost: the adiabatic gate duration is within about an order of magnitude of a simple dynamic implementation. An experimental verification of these predictions is immediately feasible with only modest resources.
Anthophylax attenuatus
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Anthophylax
Anthophylax attenuatus

description: Anthophylax attenuatus (Haldeman, 1847) Prince Edward Island: Queens Co., Prince Edward Island National Park, 18.VII.2002, G. Smith, Lindgren funnel trap, lure; UHR Ethanol and UHR alpha-pinene (1, AFC).
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on page 293, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
Il Massiccio del Monte Velino. Un itinerario geomorfologico nell'Appennino Centrale
Creators: name: Consoli, Alessio
name: Salvatore, M. Cristina
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2018

description: Nel 1989 la Regione Abruzzo, con la L.R. n° 54 del 13 - 7 - 1989, istituì il Parco Naturale Regionale (PNR) "Sirente - Velino". I 60.000 ettari che costituiscono l'area del Parco includono il Massiccio del Monte Velino, facente parte della più lunga catena omonima che si estende in direzione appenninica NW - SE nell'Italia Centrale per circa 40 km, il Massiccio del Monte Sirente (2.348 m), la media Valle dell' Aterno e l'Altopiano delle Rocche, che comprende l'altopiano di Rocca di Mezzo (1 .260 m), quello di Rovere (1.310 m) e quello di Ovindoli (1.350 m).
description: Semestrale di studi e ricerche di geografia, N. 1 (2001): Il Massiccio del Monte Velino. Un itinerario geomorfologico nell'Appennino Centrale
Effects of dissipation on a quantum critical point with disorder
Creators: name: Hoyos, J. A.
name: Kotabage, Chetan
name: Vojta, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the effects of dissipation on a disordered quantum phase transition with O$(N)$ order parameter symmetry by applying a strong-disorder renormalization group to the Landau-Ginzburg-Wilson field theory of the problem. We find that Ohmic dissipation results in a non-perturbative infinite-randomness critical point with unconventional activated dynamical scaling while superohmic damping leads to conventional behavior. We discuss applications to the superconductor-metal transition in nanowires and to Hertz' theory of the itinerant antiferromagnetic transition.
description: 4 pages, 1 figure, final version, as published
Dead Zone Accretion Flows in Protostellar Disks
Creators: name: Turner, N. J.
name: Sano, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Planets form inside protostellar disks in a dead zone where the electrical resistivity of the gas is too high for magnetic forces to drive turbulence. We show that much of the dead zone nevertheless is active and flows toward the star while smooth, large-scale magnetic fields transfer the orbital angular momentum radially outward. Stellar X-ray and radionuclide ionization sustain a weak coupling of the dead zone gas to the magnetic fields, despite the rapid recombination of free charges on dust grains. Net radial magnetic fields are generated in the magneto-rotational turbulence in the electrically conducting top and bottom surface layers of the disk, and reach the midplane by Ohmic diffusion. A toroidal component to the fields is produced near the midplane by the orbital shear. The process is similar to the magnetization of the Solar tachocline. The result is a laminar, magnetically-driven accretion flow in the region where the planets form.
description: 12 pages, 4 figures
La Via Cassia - Francigena e l'Alto Lazio nella Seconda metà del XVIII secolo
Creators: name: Bordini, Carlo
name: Dal Passo, Fabrizio
name: Ferri, Pamela
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2018

description: Lo studio della via Cassia nel secolo XVIII, svolto per la ricerca "La cartografia tematica nelle scienze storiche e geografiche", è stato realizzato con il contributo del Ministero dell'Università e della ricerca scientifica e tecnologica, e sotto la direzione del Prof. Cosimo Palagiano. L'importanza della via Cassia nei secoli proviene dal fatto che essa costituisce il collegamento naturale di Roma con il resto dell'Europa; importanza che si accresce nel basso medioevo, dal momento in cui la Cassia diviene, con l'istituzione dei giubilei, la principale via di accesso per i pellegrini.
description: Semestrale di studi e ricerche di geografia, N. 1-2 (2000): La Via Cassia - Francigena e l'Alto Lazio nella Seconda metà del XVIII secolo
Adversarial guesswork with quantum side information
Creators: name: Avirmed, Baasanchimed
name: Niinomi, Kaito
name: Dall'Arno, Michele
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The guesswork of a classical-quantum channel quantifies the cost incurred in guessing the state transmitted by the channel when only one state can be queried at a time, maximized over any classical pre-processing and minimized over any quantum post-processing. For arbitrary-dimensional covariant classical-quantum channels, we prove the invariance of the optimal pre-processing and the covariance of the optimal post-processing. In the qubit case, we compute the optimal guesswork for the class of so-called highly symmetric informationally complete classical-quantum channels.
description: 13 pages, published version
LEA: A Learned Encoding Advisor for Column Stores
Creators: name: Cen, Lujing
name: Kipf, Andreas
name: Marcus, Ryan
name: Kraska, Tim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data warehouses organize data in a columnar format to enable faster scans and better compression. Modern systems offer a variety of column encodings that can reduce storage footprint and improve query performance. Selecting a good encoding scheme for a particular column is an optimization problem that depends on the data, the query workload, and the underlying hardware. We introduce Learned Encoding Advisor (LEA), a learned approach to column encoding selection. LEA is trained on synthetic datasets with various distributions on the target system. Once trained, LEA uses sample data and statistics (such as cardinality) from the user's database to predict the optimal column encodings. LEA can optimize for encoded size, query performance, or a combination of the two. Compared to the heuristic-based encoding advisor of a commercial column store on TPC-H, LEA achieves 19% lower query latency while using 26% less space.
WEIGHT LOSS STRATEGIES FOR YOUNG OBESE LATINA WOMEN: AN EVIDENCE-BASED TOOL KIT
Creators: name: Penuelas, Michelle Christine
Publisher: name: Zenodo
Year: 2015

description: Latina women are disproportionately affected by obesity. The prevalence rate of obesity in Latina women is 45.1% compared to a prevalence rate of 35.5% for all women (Agne et al., 2012). Given the prevalence of obesity in Latina women, the purpose of this project was to create a toolkit that provided advanced practice registered nurses (APRNs) in primary care with specific resources to assist in counseling these women about weight reduction. This toolkit was designed to include tailored, evidence-based weight loss and management strategies that incorporate easy to access resources to address facilitators and barriers to weight reduction and maintenance in Latina women. An assessment algorithm was developed to aid APRNs in determining which approaches might be effective for a particular patient. Obesity among young Latina women will continue to be a challenge in future of healthcare. APRNs specializing in women’s health and primary care have the knowledge and expertise to positively impact long-term change and promote weight loss and maintenance among this population. The findings and recommended resources from this toolkit will assist the APRN in caring for this specific population to promote weight loss and maintenance. It is imperative that the APRN performs a thorough multi-faceted assessment to plan for reasonable weight loss and assist with implementing realistic weight loss strategies that are evidence-based and culturally tailored for the young, obese Latina population. Dissemination of the toolkit is planned at professional meeting or through web publishing. A simple evaluation tool iv about the usefulness of the toolkit was developed as part of this project and APRNs receiving the toolkit will be asked to rate its usefulness and applicability to practice.
Loop effect with vector mediator in the coherent neutrino-nucleus scattering
Creators: name: Chao, Wei
name: Li, Tong
name: Liao, Jiajun
name: Su, Min
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The observation of the coherent elastic neutrino-nucleus scattering (CE$ν$NS) provides us opportunities to explore a wide class of new physics. In the Standard Model (SM), the CE$ν$NS process arises from the vector and axial-vector neutral currents through the exchange of $Z$ boson and the axial-vector current contribution turns out to be subdominant. It is thus natural to consider the extra contributions to CE$ν$NS from more generic new physics beyond the SM with (axial-)vector interactions associated with a new vector mediator $Z'$. Besides the ordinary CE$ν$NS, the active neutrinos can convert into a new exotic fermion $χ$ through the process $νN\to χN$ mediated by $Z'$ without violating the coherence. It would be interesting to consider the implication of this conversion for the new fermion sector beyond the SM. We consider the framework of a simplified neutrino model in which a new Dirac fermion $χ$ interacts with active neutrinos and a leptophobic vector mediator $Z'$. We evaluate both the tree-level and loop-level contributions to the CE$ν$NS and in particular the loop diagrams produce active neutrino elastic scattering process $νN\to νN$ with the fermion $χ$ inside the loops. When the interaction between $Z'$ and the SM quarks is vector type and axial-vector type, the CE$ν$NS processes are respectively dominated by the tree-level and loop-level contributions. We investigate the constraints on the model parameters by fitting to the COHERENT data, assuming a wide range of $m_χ$. The parameter space with $m_χ$ larger than the maximal energy of incoming neutrinos can be constrained by including the loop-level contribution. More importantly, the inclusion of loop diagrams can place constraint on axial-vector interaction whose tree-level process is absent in the coherent neutrino-nucleus scattering.
description: 19 pages, 4 figures. version published in PRD
An investigation into the effectiveness of two strategy training approaches on the reading achievement of grade one native Indian children
Creators: name: Bryant, Harriet Willis
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of the study was to determine whether instruction in specific cognitive strategies, based on an information processing paradigm, could affect the reading achievement of grade one Native Indian children. One type of strategies dealt with simultaneous and sequential processing which have been shown to improve achievement in older children. The other type of strategies dealt directly with development of specific reading strategies. The study was basically an Experimental/Control by Pre/Post design. Three interventions were designed: teaching information processing strategies based on the Luria/Das model of information processing, teaching reading related tasks felt to improve linguistic awareness, a combination of the strategy and linguistic awareness programs. A fourth group was included to control for experimenter effect. All interventions were taught by certified teachers trained by the experimenter. The 36 subjects were taught in small groups for a total of 15 hours over three months. All continued to receive regular reading instruction in their classrooms. No significant group effect was found on the overall reading measure. At both the pre- and post-testings the simultaneous processing scores were significantly higher than the sequential processing scores. No group effects were found on the information processing scores. The results showed a sex difference for information processing
Parametrizzazione di modelli idrologici per la gestione dei sistemi agro-forestali
Creators: name: Ceres, Francesca
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: This thesis aims at developing appropriate tools for a quantitative description of space-time dynamics of the main hydrological processes evolving in the soil-vegetation-atmosphere (SVA) system at a local scale (pèdon or field scales). In this study we discuss two basic aspects of the problem: (i) to set-up techniques for a suitable parameterization of hydrologic models with a particular reference to the environmental conditions of the Mediterranean ecosystems, (ii) to implement and compare simulation models that describe the various processes with different levels of complexity.
The techniques traditionally proposed for evaluating the field water capacity, FWC, have been critically analyzed in order to highlight their limitations, especially with respect to the texture classes of soils and the vertical layering of the soil profiles. Regarding uniform soil profiles, the water content at field capacity as determined by using the Richards equation has been compared to the simplified practice of calculating FWC as the soil water content at a given value of the matric pressure head, h (usually h=-1/3 bar). The results obtained show that appropriate field capacity values are obtained only by selecting the matric pressure head h appropriately in relation to the soil texture. Instead, in case of layered soil profiles, the vertical heterogeneities can affect the FWC value, even in a remarkable manner. Specifically, this study has shown that FWC can significantly depend on the hydraulic conductivity characteristic of the soil near the lower boundary of the layered soil profile.
A section of the study then focused on comparisons between simulations of water balance obtained using different hydrological models. Simulations from models that use the Richards equation or simplified bucket-type models have been compared. It is shown that the climatic seasonality, typical of the Mediterranean environments, exerts on the dynamics of surficial water contents in the soil. Rainfall variability during the vegetative season and that one evolving during the quiescent phase is responsible for different transpiration conditions and for evolutions of the water content in the soil characterized by specific trends. During the vegetative season, major controlling factors are the transpiration trend with respect to rainfall which assumes low values. During the quiescent season, on the other hand, the main controlling factor is rainfall trend.
Dalla Via Cassia alla strada Francigena nell'Alto Lazio
Creators: name: Bellezza, Giuliano
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2018

description: Le strade hanno costituito per i Romani una delle maggiori e più efficaci forme di presa di possesso e controllo del territorio, e la rete delle vie consolari dimostra la loro visione tendenzialmente "imperiale", innovativa nell'ambito della penisola: essi furono i primi a ragionare e fare progetti in termini decisamente più vasti di quelli cui si erano limitati fino allora i possibili competitori confinanti. Lo dimostra proprio il fatto che molte consolari sono state tracciate in gran parte non tanto innovando, quanto collegando il percorso di numerosi tratti di strade preesistenti più brevi, i cui costruttori avevano, evidentemente, orizzonti più limitati. Le pagine che seguono sono dedicate in prevalenza alle vie lungo la direttrice NNO, cioè la Cassia e la Clodia, due vie sulla cui origine si sono avute notevoli discussioni, già tra i due maggiori studiosi dell'Etruria dell'inizio del XX secolo: lo storico italiano Tomassetti (1910) riteneva senza alcun dubbio precedente la Cassia, mentre secondo il classicista inglese (meglio definibile anglo-romano) Ashby ( 1929) la più antica delle due era probabilmente la Clodia, che pure è la meno nota, oggi ancor più di quanto lo fosse all'inizio del '900.
description: Semestrale di studi e ricerche di geografia, N. 1-2 (1999)
Geografia della complessità e complessità dell'educazione nell'ambito dell'autonomia
Creators: name: Cecioni Bellezza, Ester
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2018

description: Nella premessa del documento del gennaio 1998 redatto su incarico del Ministro della Pubblica Istruzione dalla "Commissione dei Saggi'', la geografia viene definita come "luogo di transizione tra temporalità naturale e temporalità umana": in tal modo essa sembra assumere, almeno a prima vista, un'imprescindibile funzione di disciplina di raccordo tra natura e società.
description: Semestrale di studi e ricerche di geografia, N. 1-2 (1999)
Anthophylax viridis LeConte 1850
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Anthophylax
Anthophylax viridis

description: Anthophylax viridis LeConte, 1850 New Brunswick: Albert Co., Alma, 3.VII.2001, R.P. Webster, coastal spruce forest (1, RWC). Charlotte Co., Seeleys Cove, 7.VII.1990, R.P. Webster, in coastal raised black spruce bog (1, RWC). Kings Co., Shoales Dam, 9.VI.1981, Pinus banksiana, 81-2- 2281-01 (1, AFC). Albert Co., Fundy National Park, 8.VII.1994, J. Edsall (1, NBM).
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on page 293, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
La percezione del mondo di Francesco Costantino Marmocchi, geografo preunitario
Creators: name: Romagnoli, Luca
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2019

description: Le tre lezioni (166 pagine) del Libro Primo del Corso di Geografia
Commerciale di Francesco Costantino Marmocchi, costituiscono un campione
didatticamente e cognitivamente rappresentativo dell'intero lavoro del geografo
toscano. Questo essenzialmente per due ordini di ragioni:
queste pagine sono in massime parti centrate sui resoconti dei viaggiatori,
dei commercianti e degli esploratori coevi all'autore e quindi offrono un
quadro cognitivo di contesti territoriali all'epoca poco noti, seppure
frammentari e filtrati attraverso resoconti d' oggettività non facilmente
comparabile;
esse presentano in tutta la loro evidenza, i differenti livelli di conoscenza,
percezione e descrizione della Terra, nota nelle sue regioni in misura assai
diversa.
description: Semestrale di studi e ricerche di geografia, N. 1-2 (1998): La percezione del mondo di Francesco Costantino Marmocchi, geografo preunitario
Dermoscopic Dark Corner Artifacts Removal: Friend or Foe?
Creators: name: Pewton, Samuel William
name: Cassidy, Bill
name: Kendrick, Connah
name: Yap, Moi Hoon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: One of the more significant obstacles in classification of skin cancer is the presence of artifacts. This paper investigates the effect of dark corner artifacts, which result from the use of dermoscopes, on the performance of a deep learning binary classification task. Previous research attempted to remove and inpaint dark corner artifacts, with the intention of creating an ideal condition for models. However, such research has been shown to be inconclusive due to lack of available datasets labelled with dark corner artifacts and detailed analysis and discussion. To address these issues, we label 10,250 skin lesion images from publicly available datasets and introduce a balanced dataset with an equal number of melanoma and non-melanoma cases. The training set comprises 6126 images without artifacts, and the testing set comprises 4124 images with dark corner artifacts. We conduct three experiments to provide new understanding on the effects of dark corner artifacts, including inpainted and synthetically generated examples, on a deep learning method. Our results suggest that introducing synthetic dark corner artifacts which have been superimposed onto the training set improved model performance, particularly in terms of the true negative rate. This indicates that deep learning learnt to ignore dark corner artifacts, rather than treating it as melanoma, when dark corner artifacts were introduced into the training set. Further, we propose a new approach to quantifying heatmaps indicating network focus using a root mean square measure of the brightness intensity in the different regions of the heatmaps. This paper provides a new guideline for skin lesions analysis with an emphasis on reproducibility.
Orbital Ordering Structures in (Nd,Pr)0.5Sr0.5MnO3 Manganite Thin Films on Perovskite (011) Substrates
Creators: name: Wakabayashi, Y.
name: Bizen, D.
name: Kubo, Y.
name: Nakao, H.
name: Murakami, Y.
name: Nakamura, M.
name: Ogimoto, Y.
name: Miyano, K.
name: Sawa, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Structural study of orbital-ordered manganite thin films has been conducted using synchrotron radiation, and a ground state electronic phase diagram is made. The lattice parameters of four manganite thin films, Nd0.5Sr0.5MnO3 (NSMO) or Pr0.5Sr0.5MnO3 (PSMO) on (011) surfaces of SrTiO3 (STO) or [(LaAlO3){0.3}(SrAl0.5Ta0.5O3){0.7}] (LSAT), were measured as a function of temperature. The result shows, as expected based on previous knowledge of bulk materials, that the films' resistivity is closely related to their structures. Observed superlattice reflections indicate that NSMO thin films have an antiferro-orbital-ordered phase as their low-temperature phase while PSMO film on LSAT has a ferro-orbital-ordered phase, and that on STO has no orbital-ordered phase. A metallic ground state was observed only in films having a narrow region of A-site ion radius, while larger ions favor ferro-orbital-ordered structure and smaller ions stabilize antiferro-orbital-ordered structure. The key to the orbital-ordering transition in (011) film is found to be the in-plane displacement along [0-1 1] direction.
description: 19pages, 11 figures
A first-principles investigation of the origin of superconductivity in TlBi$_2$
Creators: name: Yang, Aiqin
name: Tao, Xiangru
name: Quan, Yundi
name: Zhang, Peng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The intermetallic compound TlBi$_2$ crystallizes in the MgB$_2$ structure and becomes superconducting below 6.2 K. Considering that both Tl and Bi have heavy atomic masses, it is puzzling why TlBi$_2$ is a conventional phonon-mediated superconductor. We have performed comprehensive first-principles calculations of the electronic structures, the phonon dispersions and the electron-phonon couplings for TlBi$_2$. The $6p$ orbitals of bismuth dominate over the states near the Fermi level, forming strong intra-layer $p_{x/y}$ and inter-layer $p_z$ $σ$ bonds which is known to have strong electron-phonon coupling. In addition, the large spin-orbit coupling interaction in TlBi$_2$ increases its electron-phonon coupling constant significantly. As a result, TlBi$_2$, with a logarithmic phonon frequency average one tenth that of MgB$_2$, is a phonon-mediated superconductor.
MODELING AND CONTROL OF FLEXIBLE STRUCTURES WITH WEAKNESSES
Creators: name: Coppola, Alessandro
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: The modeling and control of flexible structures with weaknesses is investigated. First a modular, computationally efficient, and numerically stable method is presented, which allows to obtain the dynamic model of a robot constituted by flexible links having variable cross-section and subjected to generic ending forces and torques and to the gravity actions. Then a variation to the assumed mode method is presented which allows to obtain the analytical model of a flexible robot and which results drastically more efficient, from a computational point of view, than the classic assumed modes method. Finally a methodology for trajectory planning in the workspace and for the robot control has been developed.
Brachyleptura champlaini Casey 1913
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Brachyleptura
Brachyleptura champlaini

description: Brachyleptura champlaini Casey, 1913 New Brunswick: Kent Co., Kouchibouguac National Park, 11.VII.1978, H. Goulet (1, CNC). Northumberland Co., 5 km W of Renous River and Rt. 108, 3.VIII.2000, on Spiraea, D.F. McAlpine. Queens Co., Grand Lake near Scotchtown, 45.8946°N, 66.1383°W, 28.VII.2005, L. R. Capozi & R.P. Webster, on flowers of Cephalanthus occidentalis (3, NBM, RWC); Douglas Harbour, 45.9055°N, 66.1034°W, 23.VII.2007, R.P. Webster, margin of oak forest near lakeshore, on flowers of Spiraea alba (2, RWC). All individuals are the dark form with yellowish brown lateral margins.
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on page 293, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
An Exploratory study of the behaviors and attitudes of regular class teachers toward special needs pupils integrated in their classes
Creators: name: Perner, Darlene Elizabeth
Publisher: name: University of British Columbia
Year: 2010

description: Integrated special needs pupils may adjust better in the regular class if teachers' interactive behaviors are positive and supportive with these children and if their attitudes are favorable toward integration. The purpose of this investigation was to compare regular class teachers' interactions with special and nonspecial needs pupils and to determine whether teachers' attitudes were related to their interactive behaviors. Sixteen special and 16 nonspecial needs pupils matched for gender and in the same class, and their regular class teachers (n=16) were observed on three consecutive days. The observation of teacher-student interactions were made using a modified version of the Brophy-Good Teacher-Child Dyadic System (1969). Teacher attitudes toward special needs children were assessed using a scale developed and pilot-tested for this investigation. The analysis of the teacher attitude scores indicated that the teachers expressed predominantly favorable attitudes toward special needs children. Consequently, it was not possible to form two distinct teacher attitude groups, namely, more and less favorably disposed teachers, for statistical analysis purposes. Instead, a qualitative analysis was conducted and for some interaction variables, teacher feedback responses appeared to relate to teachers' attitudes. The results of the dependent t-test analyses on the 44 interaction variables revealed eight differentiated teacher interactions between the special and nonspecial needs pupils. The teachers gave a higher percentage of praise and verbal feedback during group instruction and positive feedback and nurture responses during seat work activities to the special needs pupils than to the nonspecial needs pupils. Also, the teachers provided more work-related contacts and direct questions to the special needs pupils than to the nonspecial needs pupils. The nonspecial needs pupils, however, received a greater percentage of direct questions and opportunities to respond than the special needs pupils. The nondifferentiated findings indicated that for 36 variables, the teachers interacted similarly with the special and nonspecial needs pupils. The teachers gave a similar percentage of most feedback responses and types of contacts to both groups of pupils.