cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hybrid mesons and auxiliary fields
Creators: name: Buisseret, Fabien
name: Mathieu, Vincent
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hybrid mesons are exotic mesons in which the color field is not in the ground state. Their understanding deserves interest from a theoretical point of view, because it is intimately related to nonperturbative aspects of QCD. Moreover, it seems that some recently detected particles, such as the $π_1(1600)$ and the Y(4260), are serious hybrid candidates. In this work, we investigate the description of such exotic hadrons by applying the auxiliary fields technique to the widely used spinless Salpeter Hamiltonian with appropriate linear confinement. Instead of the usual numerical resolution, this technique allows to find simplified analytical mass spectra and wave functions of the Hamiltonian, which still lead to reliable qualitative predictions. We analyse and compare two different descriptions of hybrid mesons, namely a two-body $q\bar q$ system with an excited flux tube, or a three-body $q\bar q g$ system. We also compute the masses of the $1^{-+}$ hybrids. Our results are shown to be in satisfactory agreement with lattice QCD and other effective models.
description: 19 pages, 4 figures
Photoionized Herbig-Haro objects in the Orion Nebula through deep high-spectral resolution spectroscopy II: HH204
Creators: name: Méndez-Delgado, J. E.
name: Henney, W. J.
name: Esteban, C.
name: García-Rojas, J.
name: Mesa-Delgado, A.
name: Arellano-Córdova, K. Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze the physical conditions, chemical composition and other properties of the photoionized Herbig-Haro object HH~204 through Very Large Telescope (VLT) echelle spectroscopy and Hubble Space Telescope (\textit{HST}) imaging. We kinematically isolate the high-velocity emission of HH~204 from the emission of the background nebula and study the sub-arcsecond distribution of physical conditions and ionic abundances across the HH object. We find that low and intermediate-ionization emission arises exclusively from gas at photoionization equilibrium temperatures, whereas the weak high-ionization emission from HH~204 shows a significant contribution from higher temperature shock-excited gas. We derive separately the ionic abundances of HH~204, the emission of the Orion Nebula and the fainter Diffuse Blue Layer.In HH~204, the O$^{+}$ abundance determined from Collisional Excited Lines (CELs) matches the one based on Recombination Lines (RLs), while the O$^{2+}$ abundance is very low, so that the oxygen abundance discrepancy is zero. The ionic abundances of Ni and Fe in HH~204 have similar ionization and depletion patterns, with total abundances that are a factor of 3.5 higher than in the rest of the Orion Nebula due to dust destruction in the bowshock. We show that a failure to resolve the kinematic components in our spectra would lead to significant error in the determination of chemical abundances (for instance, 40\% underestimate of O), mainly due to incorrect estimation of the electron density.
description: 37 pages, 17 tables, 25 figures
An Ultra-Rare Disease? Where Do We Go From Here?
Creators: name: Irvine, Glenn
name: Irvine, Ginger
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2013

description: When people are diagnosed with rare, incurable disorders, they and their families suffer both from the disease itself and from the lack of information and resources available. They become acutely aware that research can only be conducted when it is funded. This article presents our experiences following the diagnosis of our daughter with chorea‐acanthocytosis, and describes how we established a not‐for‐profit organization to fund and facilitate research into this rare disease. Personal relationships with clinicians and scientists, and with friends who were willing to help, have played an essential part in moving the field of neuroacanthocytosis research forward.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Sull’importanza dei sistemi di riferimento per l’ambiente GIS: un focus su ArcGIS Pro e sulle trasformazioni grid-based
Creators: name: Pavia, Davide
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Il Decreto interministeriale del 10 novembre 2011 ha stabilito l’adozione del sistema di riferimento “RDN2008” per il posizionamento dei geodati nazionali. All’articolo quattro della normativa si precisa che le pubbliche amministrazioni del Paese, alle diverse scale, «rendono disponibili […] i dati pregressi» nel nuovo sistema di riferimento, utilizzando per la conversione «i dati e le procedure messi […] a disposizione» dall’Istituto Geografico Militare. In considerazione dell’effetto retroattivo del provvedimento, la conoscenza e applicazione delle linee guida appare rilevante soprattutto per gli utenti dei Geographic Information Systems, chiamati a vigilare sull’adeguatezza di quelle trasformazioni che, in una mappa o scena tridimensionale, consentono la giusta sovrapposizione tra diversi strati informativi. Focalizzando l’attenzione su ArcGIS Pro, l’applicazione desktop più recente di ESRI Inc., lo scopo del lavoro è quello di descrivere i passaggi operativi necessari al corretto passaggio da un sistema di riferimento nazionale all’altro, evidenziando alcune ambiguità incontrate nell’acquisizione dei grid file richiesti dalle linee guida e nella loro successiva applicazione.
description: Semestrale di studi e ricerche di geografia, N. 2 (2023)
A Scavenger Hunt for Service Robots
Creators: name: Yedidsion, Harel
name: Suriadinata, Jennifer
name: Xu, Zifan
name: Debruyn, Stefan
name: Stone, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Creating robots that can perform general-purpose service tasks in a human-populated environment has been a longstanding grand challenge for AI and Robotics research. One particularly valuable skill that is relevant to a wide variety of tasks is the ability to locate and retrieve objects upon request. This paper models this skill as a Scavenger Hunt (SH) game, which we formulate as a variation of the NP-hard stochastic traveling purchaser problem. In this problem, the goal is to find a set of objects as quickly as possible, given probability distributions of where they may be found. We investigate the performance of several solution algorithms for the SH problem, both in simulation and on a real mobile robot. We use Reinforcement Learning (RL) to train an agent to plan a minimal cost path, and show that the RL agent can outperform a range of heuristic algorithms, achieving near optimal performance. In order to stimulate research on this problem, we introduce a publicly available software stack and associated website that enable users to upload scavenger hunts which robots can download, perform, and learn from to continually improve their performance on future hunts.
description: 6 pages + references + Appendix
Dopamine Transporter Imaging in Psychogenic Parkinsonism and Neurodegenerative Parkinsonism with Psychogenic Overlay: A Report of Three Cases
Creators: name: Umeh, Chizoba C.
name: Szabo, Zsolt
name: Pontone, Gregory M.
name: Mari, Zoltan
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2013

description: Background: Differentiating psychogenic parkinsonism from neurodegenerative Parkinson's disease (PD) with psychogenic features is a diagnostic challenge. Case report: We report a detailed longitudinal clinical description of three cases presenting with suspected psychogenic parkinsonism. Dopamine transporter single-photon emission computed tomography (DAT-SPECT) was used as a supplemental diagnostic study and influenced clinical management. Discussion: DAT-SPECT quantified the integrity of the striatal dopaminergic system in these cases of clinically uncertain parkinsonism and supported clinical decision-making.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Paesaggio, turismo, sostenibilità. Una parabola geografica di Stefania Cerutti
Creators: name: La Foresta, Daniela
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: La narrazione geografico-territoriale e la rappresentazione matematica si uniscono nel volume, edito da FrancoAngeli nella collana Scienze Geografiche, di Stefania Cerutti: il fulcro del lavoro, frutto anche delle riflessioni maturate nell’ambito del Centro Studi Upontourism, è rappresentato dall’ utilizzo in termini geografici del luogo geometrico della parabola, dove i classici coefficienti a, b e c dell’equazione sono sostituiti dai concetti di paesaggio, turismo e sostenibilità. Le variabili x e y completano l’espressione, indicando rispettivamente attori – ossia la soggettività multipla che si occupa di turismo – e territorio – il contesto spaziale e dinamico dove hanno luogo le diverse iniziative.
description: Semestrale di studi e ricerche di geografia, N. 2 (2023)
A Possible Solution of the Cosmological Constant Problem based on Minimal Length Uncertainty and GW170817 and PLANCK Observations
Creators: name: Diab, Abdel Magied
name: Tawfik, Abdel Nasser
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We propose the generalized uncertainty principle (GUP) with an additional term of quadratic momentum motivated by string theory and black hole physics as a quantum mechanical framework for the minimal length uncertainty at the Planck scale. We demonstrate that the GUP parameter, $β_0$, could be best constrained by the the gravitational waves observations; GW170817 event. Also, we suggest another proposal based on the modified dispersion relations (MDRs) in order to calculate the difference between the group velocity of gravitons and that of photons. We conclude that the upper bound reads $β_0 \simeq 10^{60}$. Utilizing features of the UV/IR correspondence and the obvious similarities between GUP (including non-gravitating and gravitating impacts on Heisenberg uncertainty principle) and the discrepancy between the theoretical and the observed cosmological constant $Λ$ (apparently manifesting gravitational influences on the vacuum energy density), known as {\it catastrophe of non-gravitating vacuum}, we suggest a possible solution for this long-standing physical problem, $Λ\simeq 10^{-47}~$GeV$^4/\hbar^3 c^3$.
description: 15 pages, submitted to JCAP
Περιοδική τροφοδοσία υγρού σε στήλη διφασικής ομορροής: χαρακτηριστικά ροής και μεταφοράς μάζας
Creators: name: Τριβιζαδάκης, Μιχαήλ Ε.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Στήλη στάζουσας ροής(ΣΣΡ)
Επιβαλλόμενη παλμική ροή
Ρευστομηχανικά χαρακτηριστικά
Τοπικοί συντελεστές μεταφοράς μάζας
Επίδραση σχήματος/μέγεθος σωματιδίων
Υψηλή συχνότητα τροφοδοσίας υγρού
Trickle Bed Reactor(TBR)
Induced pulsing flow
Hydrodynamic characteristics
Local liquid/solid unass transfer
Particle shape/size effects
"Fast" mode of publishing

description: Μελετάται η περιοδική τροφοδοσία υγρού σε στήλη δι-φασικής ομορροής("επιβαλλόμενη παλμική ροή" υγρού) υπό συνθήκες σχετικής υψηλής συχνότητας. Δίνεται έμφαση στην επίδραση που ασκεί το σχήμα συνήθων σωματιδίων πληρωτικού υλικού που χρησιμοποιούνται στην πράξη, δηλαδή κυλινδρικών(extrudates)και σφαιρικών. Για τη μελέτη των ρευστομηχανικών χαρακτηριστικών χρησιμοποιούνται κυλινδρικοί(διαμ.1,5mm)και οι μετρήσεις συγκρίνονται με πρόσφατα αποτελέσματα από κλίνες σφαιρικών σωματιδίων (6mm και 3mm). Όλες οι μετρήσεις διεξάγονται υπό συνθήκη πίεσης κοντά στην ατμοσφαιρική, ενώ μελετώνται τόσο η ομορροή με περιοδική τροφοδοσία υγρού("επιβαλλόμενη παλμική" ροή)όσο και η αντίσταση με σταθερή παροχή και των δύο φάσεων("στάζουσα" ροή). Αναφορική με τα ρευστομηχανικά χαρακτηριστικά μελετώνται η οριοθέτηση των περιοχών ροής(στάζουσα-παλμική), η συγκράτηση υγρού σε διάφορες θέσεις, η πτώση πίιεσης, αλλά και βασικά χαρακτηριστικά της χρονικής και χωρικής εξέλιξης των παλμών(ταχύτητα, ένταση, απόκληση παλμών). Οι μετρήσεις μεταφοράς μάζας, διεξήχθησαν υπό παρόμοιες συνθήκες παροχής υγρού. Γενικά, διαπιστώθηκε ότι η επιβαλλόμενη παλμική ροή υγρού πλεονεκτεί έναντι της συμβατικής. Επίσης το ομοιόμορφο σφαιρικό σχήμα φαίνεται να πλεονεκτεί έναντι του κυλινδρικού, τόσο ως προς τα ρευστομηχανικά χαρακτηριστικά, όσο και ως προς τους τοπικούς συντελεστές μεταφοράς μάζας
description: This study is focused on the effect of periodic liquid feeding on trickle bed fluid mechanical and mass transfer characteristics and on the effect of packing particle shape by comparing data obtained with cylidrical extrudates and with spherical particles. Periodic liquid feeding is investigated-at sufficient high frequencies("fast" mode). Detailed information is obtained, on the axial propagation and attentiation of pulses. Key fluid mechanical parameters studied include dynamic holdup, pressure drop, pulse celerity and intensity. For the mass transfer study experiments aimed at determining local and global liquid/solid mass transfer rates, mainly pulsing flow appears to improve distribution of fluids. Moreover, for comparable particle size and mean packing viod fraction ε, the uniform spherical shape display clear advantages over the cylindrical extrudates, both with respect to fluid mechanical parameters and to mass transfer rates
Quantitative Methods for Evaluating the Efficacy of Thalamic Deep Brain Stimulation in Patients with Essential Tremor
Creators: name: Wastensson, Gunilla
name: Holmberg, Björn
name: Johnels, Bo
name: Barregard, Lars
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2013

description: Background: Deep brain stimulation (DBS) of the thalamus is a safe and efficient method for treatment of disabling tremor in patient with essential tremor (ET). However, successful tremor suppression after surgery requires careful selection of stimulus parameters. Our aim was to examine the possible use of certain quantitative methods for evaluating the efficacy of thalamic DBS in ET patients in clinical practice, and to compare these methods with traditional clinical tests. Methods: We examined 22 patients using the Essential Tremor Rating Scale (ETRS) and quantitative assessment of tremor with the stimulator both activated and deactivated. We used an accelerometer (CATSYS tremor Pen) for quantitative measurement of postural tremor, and a eurythmokinesimeter (EKM) to evaluate kinetic tremor in a rapid pointing task. Results: The efficacy of DBS on tremor suppression was prominent irrespective of the method used. The agreement between clinical rating of postural tremor and tremor intensity as measured by the CATSYS tremor pen was relatively high (rs = 0.74). The agreement between kinetic tremor as assessed by the ETRS and the main outcome variable from the EKM test was low (rs = 0.34). The lack of agreement indicates that the EKM test is not comparable with the clinical test. Discussion: Quantitative methods, such as the CATSYS tremor pen, could be a useful complement to clinical tremor assessment in evaluating the efficacy of DBS in clinical practice. Future studies should evaluate the precision of these methods and long‐term impact on tremor suppression, activities of daily living (ADL) function and quality of life.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Σύνθεση και φαρμακοχημική μελέτη νέων α,β-ακόρεστων καρβοξυλικών οξέων και παραγώγων τους με πιθανή δράση κατά της φλεγμονής: εφαρμογή της μεθόδου QSAR
Creators: name: Ποντίκη, Ελένη Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Λιποξυγονάση
α,β ακόρεστα οξέα
Lipoxygenase
α,β-aryl acetic acids

description: Η φλεγμονή είναι η φυσιολογική απάντηση του οργανισμού σε βλάβη των ιστών. Το αραχιδονικό οξύ που απελευθερώνεται μεταβολίζεται από την προσταγλανδινικής συθετάσης και την λιποξυγονάση. Συντίθεται νέα α,β-ακόρεστα οξέα, υδροξαμικά οξέα και παράγωγα τους με πιθανή δράση κατά της φλεγμονής. Οι νέες ενώσεις μελετώνται για την αντιοξειδωτική τους δράση, για την αναστολή του ενζύμου λιποξυγονάση και PGHS-1, για την κυτταροτοξικότητα και την αλληλεπίδραση με γλουταθειόνη. Επίσης in vivo για την αναστολή του οιδήματος από καρραγενίνης και της ελκώδους κολίτιδας. Συσχετίζονται οι βιολογικές δράσεις με επιλεγμένες φυσικοχημικές ιδιότητες. Από δεδομένα της βιβλιογραφίας για την αναστολή του ενζύμου λιποξυγονάση γίνεται προσπάθεια εξαγωγής ποσοτικών σχέσεων δομής-δράσης
description: Inflammation is the biological response of living organisms to tissue dammage. It involves prostaglandin synthase and lypoxygenase. New aryl-acetic acids, hydroxamic acids and amides have been synthesized. The compounds have been inverstigated for their antioxidant activity in vitro for the inhibition of LOX and PGHS-1 stability studies and incubation with GSH and cytotoxic and antiproliferative activity and colitis. The biological data were correlated with some physicochemical parameters. lso from the literature data for lox inhibitors were correlated using the C-QSAR program of Biobyte
TREC 2020 Podcasts Track Overview
Creators: name: Jones, Rosie
name: Carterette, Ben
name: Clifton, Ann
name: Eskevich, Maria
name: Jones, Gareth J. F.
name: Karlgren, Jussi
name: Pappu, Aasish
name: Reddy, Sravana
name: Yu, Yongze
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The Podcast Track is new at the Text Retrieval Conference (TREC) in 2020. The podcast track was designed to encourage research into podcasts in the information retrieval and NLP research communities. The track consisted of two shared tasks: segment retrieval and summarization, both based on a dataset of over 100,000 podcast episodes (metadata, audio, and automatic transcripts) which was released concurrently with the track. The track generated considerable interest, attracted hundreds of new registrations to TREC and fifteen teams, mostly disjoint between search and summarization, made final submissions for assessment. Deep learning was the dominant experimental approach for both search experiments and summarization. This paper gives an overview of the tasks and the results of the participants' experiments. The track will return to TREC 2021 with the same two tasks, incorporating slight modifications in response to participant feedback.
Una scuola inclusiva. Azioni per contrastare i rischi di dispersione di alunne e alunni di origine straniera (a cura di) Giovanna Filosa, Emanuela Gamberoni
Creators: name: Castagnoli, Donata
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Appena pubblicati, all’interno della collana Tratti geografici, sono gli esiti del progetto nato dalla collaborazione tra l’Istituto per l’analisi delle politiche pubbliche (INAPP) e l’Associazione Italiana Insegnanti di Geografia, per la formulazione di riflessioni programmatiche sul tema dell’inclusività scolastica degli alunni di origine straniera. L’Accordo in oggetto scaturisce dalla richiesta proveniente dal Ministero del lavoro e delle politiche sociali di un monitoraggio delle attività finalizzate all’integrazione oggi in atto. Il volume è curato da Giovanna Filosa e Emanuela Gamberoni, autrici anche del capitolo introduttivo.
description: Semestrale di studi e ricerche di geografia, N. 2 (2023)
Metal to insulator transition at the surface of $V_2O_3$ thin films: an in-situ view
Creators: name: Caputo, Marco
name: Jandke, Jasmin
name: Cappelli, Edoardo
name: Chaluvadi, Sandeep Kumar
name: Guedes, Eduardo Bonini
name: Naamneh, Muntaser
name: Vinai, Giovanni
name: Fujii, Jun
name: Torelli, Piero
name: Vobornik, Ivana
name: Goldoni, Andrea
name: Orgiani, Pasquale
name: Baumberger, Felix
name: Radovic, Milan
name: Panaccione, Giancarlo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: $V_2O_3$ has long been studied as a prototypical strongly correlated material. The difficulty in obtaining clean, well ordered surfaces, however, hindered the use of surface sensitive techniques to study its electronic structure. Here we show by mean of X-ray diffraction and electrical transport that thin films prepared by pulsed laser deposition can reproduce the functionality of bulk $V_2O_3$. The same films, when transferred in-situ, show an excellent surface quality as indicated by scanning tunnelling microscopy and low energy electron diffraction, representing a viable approach to study the metal-insulator transition (MIT) in $V_2O_3$ by means of angle-resolved photoemission spectroscopy. Combined, these two aspects pave the way for the use of $V_2O_3$ thin films in device-oriented heterostructures.
Spatial Discrimination Threshold Abnormalities are not Detected in a Pilot Study of DYT6 Dystonia Mutation Carriers
Creators: name: Deik, Andres Felipe
name: O'Riordan, Sean
name: San Luciano, Marta
name: Shanker, Vicki Lynn
name: Raymond, Deborah
name: Bressman, Susan Berliner
name: Saunders-Pullman, Rachel
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: Spatial discrimination thresholds (SDTs) assess somatosensory integration, and provide a window into better understanding the pathophysiology of dystonia. They are abnormal in some focal dystonias, but normal in DYT1 dystonia. It is unknown whether SDTs are altered in DYT6 gene mutation carriers (C). Methods: SDTs were assessed in 17 DYT6 C (including eight manifesting carriers), 15 DYT1 C (including seven manifesting carriers) and 34 controls, using a standardized grating orientation task. Subjects were asked to recognize the orientation of Johnson–Van Boven–Philips (JVP) dome gratings on either index fingertip until 40% or more answers were incorrect. SDTs between indexes were calculated and averaged, with a final SDT assigned to each subject, and tertiles for control SDTs were constructed. Results: SDTs of DYT6 C or DYT1 C were comparable to those of controls, and not more likely to be in the worst tertile (p = 0.8 for DYT6 C vs. controls and p = 1.0 for DYT1 C vs. controls). This was independent of gene expression. Discussion: DYT6 carriers do not have impaired SDTs with the JVP dome paradigm. The normal SDT pattern thus suggests shared sensory physiologic patterns with DYT1 dystonia.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
On the Stability of Periodic Solutions in the Perturbed Chemostat
Creators: name: Mazenc, Frederic
name: Malisoff, Michael
name: De Leenheer, Patrick
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93D20

description: We study the chemostat model for one species competing for one nutrient using a Lyapunov-type analysis. We design the dilution rate function so that all solutions of the chemostat converge to a prescribed periodic solution. In terms of chemostat biology, this means that no matter what positive initial levels for the species concentration and nutrient are selected, the long term species concentration and substrate levels closely approximate a prescribed oscillatory behavior. This is significant because it reproduces the realistic ecological situation where the species and substrate concentrations oscillate. We show that the stability is maintained when the model is augmented by additional species that are being driven to extinction. We also give an input-to-state stability result for the chemostat tracking equations for cases where there are small perturbations acting on the dilution rate and initial concentration. This means that the long term species concentration and substrate behavior enjoys a highly desirable robustness property, since it continues to approximate the prescribed oscillation up to a small error when there are small unexpected changes in the dilution rate function.
description: 20 pages, 3 figures, accepted for publication in Mathematical Biosciences and Engineering on December 5, 2006
Prevalence of Essential Tremor on Arosa Island, Spain: a Community-based, Door-to-Door Survey
Creators: name: Seijo-Martinez, Manuel
name: Castro Del Rio, Maria
name: Rodriguez Alvarez, Jose Ramon
name: Suarez-Prado, Ramon
name: Torres Salgado, Eugenio
name: Paz Esquete, Javier
name: Sobrido-Gomez, Maria Jesus
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2013

description: Background: The prevalence of essential tremor (ET) is still not well understood and the various studies performed to date have generated highly variable results. Few epidemiologic studies on the prevalence of ET have been reported from Spain. Methods: A one‐stage door‐to‐door survey was conducted on Arosa Island, northwestern Spain, to determine the prevalence of ET in the population aged 65 years and older. The diagnostic criteria for ET were the presence of non‐dystonic head tremor or moderate‐ to severe‐amplitude tremor on at least four tests of the revised Washington Heights‐Inwood Genetic Study of Essential Tremor (WHIGET) Scale. Results: A total of 65 individuals with ET (28 males, 37 females) were identified, resulting in a crude prevalence of 8.63% (adjusted rate 8.42%). Prevalence increased with advancing age. There were no significant differences in prevalence between sexes in any of the age groups. Among the prevalent cases, 12.3% (n = 8) had been previously diagnosed. Only 29.2% (n = 19) reported functional disability caused by tremor. A family history of tremor was reported in 35.4% (n = 23). Discussion: The prevalence of ET was higher than that seen in similar populations in Spain and other countries. A high proportion of those with ET were previously undiagnosed. Since Arosa Island has been a relatively isolated area, these results might indicate a predominant role, at least in the elderly, for genetic factors in the development of ET.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Το αναλυτικό πρόγραμμα σπουδών της στατιστικής στο δημοτικό σχολείο και οι αντιλήψεις - γνώση, ερμηνεία και κατανόηση - των μαθητών/τριών των τελευταίων τάξεων για τις γραφικές απεικονίσεις των δεδομένων
Creators: name: Ιωάννης, Μιχάλης Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Διαχείριση δεδομένων
Αναλυτικό πρόγραμμα
Data handling
Curriculum

description: Η παρούσα διατριβή ασχολείται με δυο κύρια θέματα που είναι αλληλένδετα : το αναλυτικό πρόγραμμα σπουδών της στατιστικής στο δημοτικό σχολείο και της αντιλήψεις-γνώση, ερμηνεία και κατανόηση - των μαθητών/τριών και τριών τελευταίων τάξεων του δημοτικού σχολείου για τις γραφικές απεικονίσεις δεδομένων. Στο πρώτο μέρος της διατριβής παρουσιάζεται το γενικό πλαίσιο του αντικειμένου της στατιστικής(ή της διαχείρισης δεδομένων) στο δημοτικό σχολείο και οριοθετείται η εννοιολογική, η παιδαγωγική και η διδακτική διάστασή του. Στο δεύτερο μέρος, που αποτελεί και την εμπειρική έρευνα, διερευνάται η ερμηνεία και κατανόηση των γραφικών απεικονίσεων των δεδομένων από μαθητές/τριες της Δ', Ε' και ΣΤ' τάξης του δημοτικού σχολείου. Δείγμα 601 μαθητών/τριών από αυτές τις τάξεις απάντησε σε ερωτηματολόγιο που περιείχε απεικονίσεις-πίνακας, εικονογράφημα, ραβδόγραμμα(2), πίτα, γραφική παράσταση γραμμής, γράφημα γραμμής, ιστόγραμμα, φυλλογράφημα, θηκόγραμμα - με 6 ερωτήματα κατανόησης σε κάθε μια που αντιστοιχούσαν σε τρία επίπεδα κατανόησης : ερμηενεία και κατανόηση δεδομένων, μεταξύ των δεδομένων και πέρα από τα δεδομένα. Σε γενικές γραμμές, τα αποτελέσματα δείχνουν ότι η πλειονότητα των παιδιών(ιδίως της Ε΄και Στ' τάξης) ερμηνεύουν και κατανοούν πληροφορίες από γραφικές απεικονίσεις δεδομένων σε ικανοποιητικό επίπεδο αν και συναντούν κάποιες δυσκολίες στο 2ο και 3ο επίπεδο κατανόησης
description: This doctoral thesis deals with two main issues which are interrelated : the statistics curriculum in primary school and graph comprehension of students of 4-6 grades. In the first part, an overview of the statistics (or data handline) cirriculum in primary school is presented and basic guidelines about objectives, pedagogy, didactical methodology, content and assessment of the subject are suggested. The empirical research concerns the graph comprehension of students 10-12 years old. A sample of 601 students of that age responsed to a questionnaire that contained 10 graphical representations, equivalent to three levels of comprehension, namely, read the data, read between the data and read beyond the data. The results show, that, in general, students(especially those of 5th and 6th grade) are reading and comprehending graphical representations of data in a quite satisfactory level, although having difficulties on the second and third levels
Surface NMR using quantum sensors in diamond
Creators: name: Liu, Kristina S.
name: Henning, Alex
name: Heindl, Markus W.
name: Allert, Robin D.
name: Bartl, Johannes D.
name: Sharp, Ian D.
name: Rizzato, Roberto
name: Bucher, Dominik B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Characterization of the molecular properties of surfaces under ambient or chemically reactive conditions is a fundamental scientific challenge. Moreover, many traditional analytical techniques used for probing surfaces often lack dynamic or molecular selectivity, which limits their applicability for mechanistic and kinetic studies under realistic chemical conditions. Nuclear magnetic resonance spectroscopy (NMR) is a widely used technique and would be ideal for probing interfaces due to the molecular information it provides noninvasively. However, it lacks the sensitivity to probe the small number of spins at surfaces. Here, we use nitrogen vacancy (NV) centers in diamond as quantum sensors to optically detect nuclear magnetic resonance signals from chemically modified aluminum oxide surfaces, prepared with atomic layer deposition (ALD). With the surface NV-NMR technique, we are able to monitor in real-time the formation kinetics of a self assembled monolayer (SAM) based on phosphonate anchoring chemistry to the surface. This demonstrates the capability of quantum sensors as a new surface-sensitive tool with sub-monolayer sensitivity for in-situ NMR analysis with the additional advantage of a strongly reduced technical complexity.
Harmaline-Induced Tremor in Mice: Videotape Documentation and Open Questions About the Model
Creators: name: Cheng, Melody Ming-Hui
name: Tang, Guomei
name: Kuo, Sheng-Han
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2013

description: Background: Harmaline‐induced tremor in rodents has been extensively used as an animal model for essential tremor (ET). However, there is no visual documentation in the published literature. Methods: We injected mice subcutaneously with either 20 mg/kg of harmaline hydrochloride or saline and then videotaped the responses. Results: Action and postural tremor in the mouse began 5 minutes after subcutaneous harmaline injection and peaked at approximately 30 minutes. The tremor involved the head, trunk, tail, and four limbs and lasted for approximately 2 hours. The forelimb tremor was postural or action tremor, similar to that observed in ET. Discussion: This video segment provides the first visual documentation of the phenomenology of harmaline‐induced tremor in a mouse. We also raise several unanswered questions regarding the use of harmaline‐induced tremor to model ET.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Quasifolds, Diffeology and Noncommutative Geometry
Creators: name: Iglesias-Zemmour, Patrick
name: Prato, Elisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary: 53. Secondary: 58B34

description: After embedding the objects quasifolds into the category {Diffeology}, we associate a C*-agebra with every atlas of any quasifold, and show how different atlases give Morita equivalent algebras. This builds a new bridge between diffeology and noncommutative geometry (beginning with the today classical example of the irrational torus) which associates a Morita class of C*-algebras with a diffeomorphic class of quasifolds.
description: 21 pages, 3 figures, final version to appear in J. Noncommut. Geom., notes added in introduction
Scoprirsi italiani. I viaggi delle radici in Italia (a cura di) Marina Gabrieli, Riccardo Giumelli, Delfina Licata, Giuseppe Sommario
Creators: name: Di Lello, Giovanna
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Scoprirsi italiani. I viaggi delle radici in Italia, edito da Rubbettino nel 2022, è un volume che nasce da un progetto di ricerca sul turismo delle radici, un settore indirizzato agli emigranti e ai loro discendenti con un potenziale di circa 80 milioni di persone, a cui il Ministero degli Affari Esteri e della Cooperazione Internazionale sta lavorando da tempo introducendo una strategia integrata per il rilancio del turismo, nell’ambito dell’investimento per l’Attrattività dei Borghi del PNRR, che coinvolgerà tutto Paese nel 2024, “Anno del turismo delle radici italiane”.
description: Semestrale di studi e ricerche di geografia, N. 2 (2023)
Landau level spectroscopy of PbSnSe topological crystalline insulator
Creators: name: Tikuišis, Kristupas Kazimieras
name: Wyzula, Jan
name: Ohnoutek, Lukáš
name: Cejpek, Petr
name: Uhlířová, Klára
name: Hakl, Michael
name: Faugeras, Clément
name: Výborný, Karel
name: Ishida, Akihiro
name: Veis, Martin
name: Orlita, Milan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on an infrared magneto-spectroscopy study of Pb$_{1-x}$Sn$_x$Se, a topological crystalline insulator. We have examined a set of samples, all in the inverted regime of electronic bands, with the tin composition varying from $x=0.2$ to $0.33$. Our analysis shows that the observed response, composed of a series of interband inter-Landau level excitations, can be interpreted and modelled using the relativistic-like Hamiltonian for three-dimensional massive Dirac electrons, expanded to include diagonal quadratic terms that impose band inversion. In our data, we have not found any clear signature of massless electron states that are present on the surface of Pb$_{1-x}$Sn$_x$Se crystals in the inverted regime. Reasons for this unexpected result are discussed.
description: 11 pages, 7 figures, to be published in Phys. Rev. B
Rivoli: La nascita di un condottiero di Andrea Rispoli
Creators: name: De Giovanni, Sacha Mauro
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Sin dalle prime pagine, l’affondo letterario, storico e geografico di Andrea Rispoli racconta la vita del più noto dei fratelli Bonaparte, il perno principale insostituibile; quel Napoleone che, proprio durante la cerimonia d’incoronazione del 2 dicembre 1804, sussurra al fratello Giuseppe: «se potesse vederci nostro padre!». Ed è pure intorno alla Tomba di Napoleone nel Mausoleo de Les invalides a Paris, nel cuore de l’Église du Dôme, che risalta la battaglia di Rivoli del 14 gennaio 1797 a cui l’Autore dedica tutto l’intero libro per parlare, infine, di un uomo, di un militare, che, a buon diritto e sicuramente, può essere paragonato ai pochi grandi condottieri dell’antichità, da Giulio Cesare ad Alessandro Magno.
description: Semestrale di studi e ricerche di geografia, N. 2 (2023)
Numerical study of finite size effects in the one-dimensional two-impurity Anderson model
Creators: name: Costamagna, S.
name: Riera, J. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the two-impurity Anderson model on finite chains using numerical techniques. We discuss the departure of magnetic correlations as a function of the interimpurity distance from a pure 2k_F oscillation due to open boundary conditions. We observe qualitatively different behaviors in the interimpurity spin correlations and in transport properties at different values of the impurity couplings. We relate these different behaviors to a change in the relative dominance between the Kondo effect and the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction. We also observe that when RKKY dominates there is a definite relation between interimpurity magnetic correlations and transport properties. In this case, there is a recovery of 2k_F periodicity when the on-site Coulomb repulsion on the chain is increased at quarter-filling. The present results could be relevant for electronic nanodevices implementing a non-local control between two quantum dots that could be located at variable distance along a wire.
description: final version to appear in Phys. Rev. B
Does Pramipexole Treatment Improve Headache in Patients with Concomitant Migraine and Restless Legs Syndrome?
Creators: name: Suzuki, Keisuke
name: Suzuki, Shiho
name: Miyamoto, Masayuki
name: Miyamoto, Tomoyuki
name: Numao, Ayaka
name: Watanabe, Yuka
name: Takashima, Ryotaro
name: Hirata, Koichi
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2013

description: Background: Recent studies have suggested a strong link between migraines and restless legs syndrome (RLS). It is possible that these disorders share a dopaminergic dysfunction in the hypothalamic A11 nucleus that contributes to this association. However, there have been no clinical studies to evaluate the effect of dopaminergic treatment on migraine symptoms in patients with concomitant migraines and RLS. Methods: We present an illustrative patient with concomitant RLS and migraine who showed improvement in her headache frequency and RLS symptoms following immediate‐release pramipexole (P‐IR) treatment and provide review results from the medical records of patients who experienced both migraines and RLS in our previous cross‐sectional study. Results: Ten patients (nine patients from the previously completed single‐center study) received P‐IR treatment were included in the study. RLS symptoms improved markedly in all of the subjects. Five out of the 10 patients (50%) reported improvement in migraine headaches. Of these five patients, four (80%) had reported morning headaches before P‐IR treatment. Discussion: Our results indicate that the identification of RLS in migraine patients is clinically significant and that dopaminergic treatment may improve both migraines, particularly morning headache (80% improvement in this study), and RLS symptoms. However, further clinical studies are warranted to verify our results.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Fiumicino. Storia e misteri del territorio di Ernesto Benelli
Creators: name: Fatigati, Franco
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Ernesto Benelli, già nella sua presentazione, mette le mani avanti: «Questo scritto è ambizioso, spericolato e appassionato». Questione da prendere assolutamente sul serio, a cui aggiunge poco avanti: «non sono uno storico, sono solo uno storiografo…Anzi a dire il vero e a voler essere sincero, io non sono neppure uno storiografo ma un semplice cantastorie, quasi un moderno trovadore medievale»: è un abito in cui si sente a suo agio e non gli si può dare torto.
description: Semestrale di studi e ricerche di geografia, N. 2 (2023)
The effect of a multicultural art program on students' art appreciation and attitudes towards other cultures
Creators: name: Paul, Diane Elizabeth
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this research study was threefold: to determine if a multicultural art program would have a positive effect on students' appreciation of their own art work, art from other cultures and attitudes towards other cultures. The program supported a multicultural view of art which emphasized the cultural similarities and values which were common to all students. A nonequivalent control-group design was used within a quasi-experimental framework. One grade eight class participated in the Multicultural Program while the other served as the control group. Both classes were pre- and posttested with the Borgardus Social Distance Scale and a Cultural Appreciation Measure to determine if there was an attitude or appreciation change as a result of the treatment. Student journals and a Journal Posttest also provided data for analysis and reflection. No significant statistical differences were found between experimental and control groups on the pre- and posttest. However, student journals and the Journal Posttest provided data to indicate a significant positive change in students' attitudes towards their own art and the art of other cultures. This was complemented by the researcher's journal which described the classroom proceedings. The results from the journals and the Journal Posttest indicate that teaching art through a multicultural perspective, which emphasizes the similarities across cultures, can change attitudes about art.
Βελτιστοποίηση της ηλεκτροχημικής ανίχνευσης και του διαχωρισμού των αμινοξέων με υγρή χρωματογραφία (HPLC)
Creators: name: Αγραφιώτου, Παναγιώτα
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Ηλεκτροχημική ανίχνευση
Μικροηλεκτρόδιο
Electrochemical detection
Microelectrodes

description: Στο διδακτορικό αυτό βρέθηκαν οι βέλτιστες συνθήκες ανίχνευσης και διαχωρισμού μιας σειράς ελεύθερων αμινοξέων καθώς και παραγωγοποιημένων αμινοξέων με τον καρδαμιδικό εστέρα της 6-αμινο-κινολίνης και του Ν-υδροξυσουκιμιδίου (AQC) με τη μέθοδο της υγρής χρωματογραφίας υψηλής πίεσης (HPLC). Προς το σκοπό αυτό : 1)βρέθηκαν οι βέλτιστες συνθήκες μεταβολής του οργανικού διαλύτη που οδηγούν στο καλύτερο διαχωρισμό των αναλυόμενων ουσιών με τη χρήση κατάλληλων αλγορίθμων που αναπτύχθηκαν στα πλαίσια του διδακτορικού αυτού, και 2)διορθώθηκε η πρόβλεψη της συγκράτησης ουσιών σε στήλες αντίστροφης φάσης HPLC όταν δεν υπάρχει ισορροπία κατά τη διάρκεια της βαθμωτής έκλουσης. Στη συνέχεια, βελτιστοποιήθηκε η ανίχνευση με τη χρήση τριών ανιχνυετών σε σειρά : UV, φθορισμομετρικού και ηλεκτροχημικού ανιχνευτή, και την καταγραφή 5 σημάτων ανίχνευσης : δύο σημάτων απορρόφησης στο UV σε δύο μήκη κύματος, ενός σήματος φθορισμού και 2 ηλεκτροχημικών σημάτων σε μακρο- και μικροηλεκτρόδιο άνθρακα, αντίστοιχα. Τέλος έγινε μία σύγκριση της έμμεσης ανάλυσης των αμινοξέων, δηλ. της ανάλυσης τους με και χωρίς παραγωγοποίηση
description: In the present PhD, it was found the optimal conditions of detection and separation of a set of free amino acids as well as of derivatized amino acids with 6-aminoquinolyl-N-hydroxy-succinimidy carbanate(AQC) using high performance liquid chromatography (HPLC). For this purpose : 1. it was found the best gradient profile that leads to the optimum separation of the mixture of solutes under consideration by using adequate algorithms developed during the present PhD, and 2. it was corrected the prediction of gradient elution times of sample solutes when there is no equilibrium of the reversed-phase column during the gradient elution. Next it was optimized the detection of free amino acids and ACQ amino acids derivatives by using in series a system of three detectors : a UV, fluometric and a multiple electrochemical detector. Thus it was simultaneously recorded the UV absorbance at two different wavelengths, the fluorescence emission as well as two electrochemical responses on macro and a micro carbon electrode, respectively. Finally it was extensively compared the detection of amino acids in their underivatized form and after derivatization with AQC reagent
Heavy+light pseudoscalar meson semileptonic transitions
Creators: name: Xu, Zhen-Ni
name: Cui, Zhu-Fang
name: Roberts, Craig D.
name: Xu, Chang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A symmetry-preserving regularisation of a vector$\times$vector contact interaction (SCI) is used to deliver a unified treatment of semileptonic transitions involving $π$, $K$, $D_{(s)}$, $B_{(s,c)}$ initial states. The framework is characterised by algebraic simplicity, few parameters, and the ability to simultaneously treat systems from Nambu-Goldstone modes to heavy+heavy mesons. Although the SCI form factors are typically somewhat stiff, the results are comparable with experiment and rigorous theory results. Hence, predictions for the five unmeasured $B_{s,c}$ branching fractions should be a reasonable guide. The analysis provides insights into the effects of Higgs boson couplings via current-quark masses on the transition form factors; and results on $B_{(s)}\to D_{(s)}$ transitions yield a prediction for the Isgur-Wise function in fair agreement with contemporary data.
description: 17 pages, 13 figures, 3 tables
Bar-like galaxies in IllustrisTNG
Creators: name: Lokas, Ewa L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study a sample of bar-like galaxies in the Illustris TNG100 simulation, in which almost the whole stellar component is in the form of a prolate spheroid. The sample is different from the late-type barred galaxies studied before. In addition to the requirement of a high enough stellar mass and resolution, the 277 galaxies were selected based on the single condition of a low enough ratio of the intermediate to long axis of the stellar component. We followed the mass and shape evolution of the galaxies as well as their interactions with other objects and divided them into three classes based on the origin of the bar and the subsequent history. In galaxies of class A (comprising 28% of the sample), the bar was induced by an interaction with a larger object, most often a cluster or group central galaxy, and the galaxies were heavily stripped of dark matter and gas. In classes B and C (27% and 45% of the sample, respectively) the bars were induced by a merger or a passing satellite, or they were formed by disk instability. Class B galaxies were then partially stripped of mass, while those of class C evolved without strong interactions, thus retaining their dark matter and gas in the outskirts. We illustrate the properties of the different classes with three representative examples of individual galaxies. In spite of the different evolutionary histories, the bars are remarkably similar in strength, length, and formation times. The gas fraction in the baryonic component within two stellar half-mass radii at the time of bar formation is always below 0.4 and usually very low, which confirms in the cosmological context the validity of this threshold, which has previously been identified in controlled simulations. Observational counterparts of these objects can be found among early-type fast rotators, S0 galaxies, or red spirals with bars.
description: 10 pages, 8 figures, 1 table, accepted for publication in A&A
Positivity of the Bondi mass in Bondi's radiating spacetimes
Creators: name: Huang, Wen-ling
name: Yau, Shing Tung
name: Zhang, Xiao
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C50, 83C35

description: We find two conditions related to the {\it news functions} of the Bondi's radiating vacuum spacetimes. We provide a complete proof of the positivity of the Bondi mass by using Schoen-Yau's method under one condition and by using Witten's method under another condition.
description: 18 pages, final version. Rendiconti Lincei - Matematica E Applicazioni, to appear in 2006