cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
From Hadronic Parity Violation to Parity-Violating Electron Scattering and Tests of the Standard Model
Creators: name: van Oers, Willem T. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: After almost five decades of study of parity violation in hadronic systems, the determination of the seven weak meson-nucleon couplings is still incomplete. Whereas parity violation in nuclear systems is complicated by the intricacies of QCD, measurements of parity violation in the much simpler proton-proton system are more straightforward to interpret. We now have three such precision pp experiments at 13.6, at 45, and 221 MeV. Today there are also better possibilities for theoretical interpretation using effective field theory. In electron-proton scattering, parity violating ep experiments such as SAMPLE, G0, HAPPEX, and PVA4 have already shown that the strange quark contributions to the charge and magnetization distributions of the nucleon are tiny. When analyzed together, the results have also greatly improved knowledge of the proton's "weak charge" (Q^p_weak = 1-4sin^2θ_W at tree level). The Q^p_weak experiment at JLab will further improve this, determining the proton's weak charge to a precision of about 4%. Such a precision will either establish conformity with the Standard Model of quarks and leptons or point to New Physics. Following the upgrade of CEBAF at JLab to 12 GeV, a parity violating electron-electron (Moller) scattering experiment similar to SLAC E158, will measure the weak charge of the electron and hence sin^2θ_W at low energy with a precision comparable to the most precise individual measurements at the Z0 pole (to about +/- 0.00025). This experiment will be complementary to Q^p_weak in terms of sensitivity to New Physics.
description: 12 pages, 8 figures, LaTeX. Invited talk at the International Symposium on Cosmology and Particle Astrophysics (CosPA07), Taipei, Taiwan, Nov 13-15, 2007
Αξιολόγηση της όρασης ασθενών μετά από εγχείρηση καταρράκτη με τη χρήση ερωτηματολογίου:
Creators: name: Βλαβιανός, Ανθιμος Αναστασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: καταρράκτης
χειρουργείο καταρράκτη
cataract
cataract surgery
VFQ-25

description: Ο σκοπός αυτής της προοπτικής μελέτης κοορτής είναι να αξιολογήσει την όραση και την σχετιζόμενη με την όραση ποιότητα ζωής (QOL) σε ασθενείς που υποβλήθηκαν σε διαδοχική αμφοτερόπλευρη χειρουργική επέμβαση καταρράκτη με την ελληνική έκδοση του 25-στοιχείων ερωτηματολογίου λειτουργίας της όρασης VFQ-25 του Εθνικού Ινστιτούτου Οφθαλμού των ΗΠΑ (NEI VFQ-25). Οι ασθενείς ήταν 14 (7 άνδρες και 7 γυναίκες) 73 + / - 8,8 (μέσος όρος + / - τυπική απόκλιση) ετών. Το VFQ-25 καταγράφηκε 1 εβδομάδα πριν και 1 μήνα μετά την φακοθρυψία και την εμφύτευση αναδιπλούμενου ενδοφθάλμιου φακού. Η χειρουργική επέμβαση καταρράκτη βελτίωσε όλες τις βαθμολογίες του VFQ-25. Στατιστικά σημαντικές βελτιώσεις παρατηρήθηκαν στις υποκλίμακες γενικής υγείας (p = 0,0024), γενικής όρασης (p = 0,0011), μακρινής όρασης (p = 0,0008), κοντινής όρασης (p = 0,00002), κοινωνικής λειτουργίας (p = 0,03), εξάρτησης (p = 0,0041), δυσκολιών ρόλου (p = 0,0046), ψυχική υγείας (p = 0,0006), περιφερικής όρασης (p = 0,01), έγχρωμης όρασης (p = 0,0443), και συνολικής βαθμολογίας (p = 0,0001). Οι υποκλίμακα του οφθαλμικού πόνου (p = 0,17) δεν βελτιώθηκε στατιστικά σημαντικά. Η παρούσα μελέτη έδειξε ποσοτικά ότι η σχετιζόμενη με την όραση ποιότητα ζωής είναι σημαντικά μειωμένη σε ασθενείς με καταρράκτη, καθώς και ότι η χειρουργική επέμβαση καταρράκτη βελτιώνει δραματικά την όραση των ασθενών και την ποιότητα ζωής.
description: The purpose of this prospective cohort study is to evaluate the vision and vision-related quality of life (QOL) in patients undergoing sequential bilateral cataract surgery with the Greek version of the 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25). The patients were 14 (7 men and 7 women) 73 +/- 8.8 (mean +/- standard deviation) years old. The VFQ-25 was recorded 1 week before and 1 month after phacoemulsification and foldable intraocular lens implantation. Cataract surgery improved all VFQ-25 scores. Statistically significant improvements were observed in the subscales general health (p=0,0024), general vision (p=0,0011), distance vision (p=0,0008), near vision (p=0,00002), social functioning (p=0,03), dependency (p=0,0041), role difficulties (p=0,0046), mental health (p=0,0006), peripheral vision (p=0,01), color vision(p=0,0443), and total score (p=0,0001). The subscale ocular pain (p=0,17) did not improve statistically significantly. The current study quantitatively demonstrated that vision-related QOL is significantly impaired in patients with cataract, and that cataract surgery dramatically improves patients' vision and QOL.
The subtlety of Ly-a photons: changing the expected range of the 21-cm signal
Creators: name: Reis, Itamar
name: Fialkov, Anastasia
name: Barkana, Rennan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the evolution of the 21-cm signal from cosmic dawn and the epoch of reionization (EoR) in an upgraded model including three subtle effects of Ly-a radiation: Ly-a heating, CMB heating (mediated by Ly-a photons), and multiple scattering of Ly-a photons. Taking these effects into account we explore a wide range of astrophysical models and quantify the impact of these processes on the global 21-cm signal and its power spectrum at observable scales and redshifts. We find that, in agreement with the literature, Ly-a and CMB heating raise the gas temperature by up to $\mathcal{O}(100)$ degrees in models with weak X-ray heating and, thus, suppress the predicted 21-cm signals. Varying the astrophysical parameters over broad ranges, we find that in the upgraded model the absorption trough of the global signal reaches a lowest floor of $-165$ mK at redshifts $z\approx 15-19$. This is in contrast with the predictions for a pure adiabatically cooling Universe, for which the deepest possible absorption is a monotonically decreasing function of cosmic time and is $-178$ mK at $z = 19$ and $-216$ mK at $z=15$, dropping to even lower values at lower redshifts (e.g. $-264$ mK at $z = 10$). With the Ly-a and CMB heating included we also observe a strong suppression in the low-redshift power spectra, with the maximum possible power (evaluated over the ensemble of models) attenuated by a factor of $6.6$ at $z=9$ and $k = 0.1$ Mpc$^{-1}$. Finally, we find that at high redshifts corresponding to cosmic dawn, the heating terms have a subdominant effect while multiple scattering of Ly-a photons is important, leading to an amplification of the power spectrum by a factor of $\sim 2-5$.
Chiral anomalies and rooted staggered fermions
Creators: name: Creutz, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A popular approximation in lattice gauge theory is an extrapolation in the number of fermion species away from the four fold degeneracy natural with the staggered fermion formulation. I show that the extrapolation procedure mutilates the expected continuum holomorphic behavior in the quark masses. The conventional resolution proposes canceling the unphysical singularities with a plethora of extra states appearing at finite lattice spacing. This unproven conjecture requires an explicit loss of unitarity and locality. Even if correct, the approach implies large cutoff effects in the low-energy flavor-neutral sector.
description: 10 pages, no figures; revision includes various clarifications, a changed title, and an additional reference; version to appear in Physics Letters B
title: Eng verwoben: Staatskasse und Religion
title: Finanzierung der Religionsgemeinschaften in der Slowakei
titleType: Subtitle
Creators: name: Weingartler, Julia
Year: 2023
Subjects: Kanonisches Recht
Canon law
ÖFOS 2012 -- GEISTESWISSENSCHAFTEN (6) -- Philosophie, Ethik, Religion (603) -- Theologie (6032) -- Kanonisches Recht (603209)
ÖFOS 2012 -- HUMANITIES (6) -- Philosophy, Ethics, Religion (603) -- Theology (6032) -- Canon law (603209)
Religionsrecht
Kirchenfinanzierung
Slowakei

description: In der Slowakei spielt der Staat eine zentrale Rolle bei der Finanzierung der 18 anerkannten Religionsgemeinschaften. Neben direkten Staatsbeiträgen, die 2020 neu geregelt wurden, erhalten Kirchen auch Steuererleichterungen und zusätzliche Zuschüsse für Bildungs- und Sozialleistungen. Auch indirekte finanzielle Vorteile wie Steuerbefreiungen und Subventionen tragen zur Unterstützung bei.
Contributions to the theory of almost-constant mean curvature hypersurfaces
Creators: name: Weser, Daniel J.
name: 0000-0002-1847-6686
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Geometric analysis
Geometric measure theory

description: We study the qualitative and quantitative properties of sets with boundaries of almost-constant mean curvature. For open subsets of ℝⁿ⁺¹, we will prove L²- quantitative stability estimates in the presence of bubbling. In the case of droplets adhering to a substrate, we will classify their shapes in the small mass regime and prove a compactness theorem for droplets with boundaries of almost-constant mean curvature and almost-constant angle of contact with the substrate.
Dataset Augmentation and Dimensionality Reduction of Pinna-Related Transfer Functions
Creators: name: Guezenoc, Corentin
name: Seguier, Renaud
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Efficient modeling of the inter-individual variations of head-related transfer functions (HRTFs) is a key matterto the individualization of binaural synthesis. In previous work, we augmented a dataset of 119 pairs of earshapes and pinna-related transfer functions (PRTFs), thus creating a wide dataset of 1005 ear shapes and PRTFsgenerated by random ear drawings (WiDESPREaD) and acoustical simulations. In this article, we investigate thedimensionality reduction capacity of two principal component analysis (PCA) models of magnitude PRTFs, trainedon WiDESPREaD and on the original dataset, respectively. We find that the model trained on the WiDESPREaDdataset performs best, regardless of the number of retained principal components.
description: Audio Engineering Society Convention, May 2020, Vienna, Austria
On F-term contribution to effective action
Creators: name: Shadchin, Sergey
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply equivariant integration technique, developed in the context of instanton counting, to two dimensional N=2 supersymmetric Yang-Mills models. Twisted superpotential for U(N) model is computed. Connections to the four dimensional case are discussed. Also we make some comments about the eight dimensional model which manifests similar features.
description: 31 pages
Heavy Quarkonia Production in p+p Collisions from the PHENIX Experiment
Creators: name: Bickley, Abigail
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Quarkonia provide a sensitive probe of the properties of the hot dense medium created in high energy heavy ion collisions. Hard scattering processes result in the production of heavy quark pairs that interact with the collision medium during hadronization. These in-medium interactions convey information about the fundamental properties of the medium itself and can be used to examine the modification of the QCD confining potential in the collision environment. Baseline measurements from p+p and d+Au collision systems are used to distinguish cold nuclear matter effects while measurements from heavy ion collision systems are used to quantify in-medium effects. The PHENIX experiment has the capability of detecting heavy quarkonia at $1.2
description: 4 pages, 2 figures, Proceedings for Quark Matter 2006
Atmospheric circulation of brown dwarfs and directly imaged exoplanets driven by cloud radiative feedback: global and equatorial dynamics
Creators: name: Tan, Xianyu
name: Showman, Adam P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Brown dwarfs and directly imaged exoplanets exhibit observational evidence for active atmospheric circulation, raising critical questions about mechanisms driving the circulation, its fundamental nature, and time variability. Our previous work demonstrated the crucial role of cloud radiative feedback on driving a vigorous atmospheric circulation using local models that assume a Cartesian geometry and constant Coriolis parameters. In this study, we explore the properties of the global dynamics. We show that, under relatively strong dissipation in the bottom layers of the model, horizontally isotropic vortices are prevalent at mid-to-high latitudes while large-scale zonally propagating waves are dominant at low latitudes near the observable layers. The equatorial waves have both eastward and westward phase speeds, and the eastward components with typical speeds of a few hundred m/s usually dominate the equatorial time variability. Lightcurves of the global simulations show variability with amplitudes from 0.5 percent to a few percent depending on the rotation period and viewing angle. The time evolution of simulated lightcurves is critically affected by the equatorial waves, showing wave beating effects and differences in the lightcurve periodicity to the intrinsic rotation period. The vertical extent of clouds is the largest at the equator and decreases poleward due to the increasing influence of rotation with increasing latitude. Under weaker bottom dissipation, strong and broad zonal jets develop and modify wave propagation and lightcurve variability. Our modeling results help to explain the puzzling time evolution of observed lightcurves, a slightly shorter period of variability in IR than in radio wavelengths, and the viewing angle dependence of variability amplitude and IR colors.
description: Accepted to MNRAS, 23 pages, 18 figures
Προσομοίωση της μη μόνιμης ροής υδροφορέα για την εκτίμηση του κόστους άντλησης της αρδευτικής χρήσης του υπόγειου νερού:
Creators: name: Κουκουδάκης, Κωνσταντίνος Στυλιανού
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Πτώση στάθμης
Βάθος άντλησης
Κόστος άντλησης
Drawdown
Pumping depth
Pumping cost

description: Η υπεράντληση των υπόγειων υδροφορέων τις τελευταίες δεκαετίες, λόγω της αυξημένης ζήτησης οδήγησε στην υπέρβαση των διαθέσιμων στη φύση ποσοτήτων. Η υπεράντληση σε συνδυασμό με προβλήματα ποιοτικής υποβάθμισης οδηγούν στην ανάγκη κατανόησης της αξίας του υπόγειου νερού. Η προσομοίωση μιας πραγματικής κατάστασης με τη δημιουργία κάποιου ομοιώματος (μοντέλου) συμβάλει σε αυτή την κατεύθυνση. Τα μοντέλα αποτελούν προσεγγίσεις που περιγράφουν φαινόμενα τα οποία διέπονται από κανόνες και συνδέουν το αίτιο με το αποτέλεσμα. Η διατριβή αποτελείται από δύο σκέλη. Στο πρώτο σκέλος έγινε προσομοίωση της μη μόνιμης ροής για να μελετηθούν διάφορες υποθετικές καταστάσεις (σενάρια) και για να γίνει πρόβλεψη της εξέλιξης διαφόρων φαινομένων (πιεζομετρίας, πτώσης στάθμης του υδροφορέα και βάθος άντλησης). Για την προσομοίωση χρησιμοποιήθηκε το πρόγραμμα GMS με εκτέλεση του λογισμικού MODFLOW. Στο δεύτερο σκέλος έγινε εκτίμηση του κόστους άντλησης του αρδευτικού νερού, το οποίο σχετίζεται άμεσα με το βάθος άντλησης.
description: The overexploitation of aquifers in recent decades because of increased demand led to the overcoming of the available quantities in nature. The abstraction combined with quality degradation is leading to the need to understand the value of groundwater. The simulation of a real situation by creating model contributes in this direction. The models are approaches that describe phenomena governed by rules and linking cause and effect. The thesis consists of two parts. The first part was simulated non-permanent flow to study various scenarios and to predict the evolution of various phenomena (piezometers, drawdown of the aquifer and pumping depth). GMS program was used for the simulation with the software MODFLOW. The second part was an evaluation of the cost of pumping irrigation water, which is directly related to the depth of abstraction.
Erratum: "Post-T Tauri Stars in the Nearest OB Association" (AJ, 124, 1670 [2002])
Creators: name: Mamajek, E. E.
name: Meyer, M. R.
name: Liebert, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A few typos in Mamajek, Meyer, & Liebert (2002, AJ, 124, 1670) have been corrected in this erratum (including two stellar misidentifications and an incorrect power in the units of a slope). The most significant is the correction of a sign error in the published polynomial conversion between Tycho and Johnson-Cousins (B-V) colors.
description: 1 page, to appear in April 2006 Astronomical Journal
Deep Learning for Procedural Content Generation
Creators: name: Liu, Jialin
name: Snodgrass, Sam
name: Khalifa, Ahmed
name: Risi, Sebastian
name: Yannakakis, Georgios N.
name: Togelius, Julian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Procedural content generation in video games has a long history. Existing procedural content generation methods, such as search-based, solver-based, rule-based and grammar-based methods have been applied to various content types such as levels, maps, character models, and textures. A research field centered on content generation in games has existed for more than a decade. More recently, deep learning has powered a remarkable range of inventions in content production, which are applicable to games. While some cutting-edge deep learning methods are applied on their own, others are applied in combination with more traditional methods, or in an interactive setting. This article surveys the various deep learning methods that have been applied to generate game content directly or indirectly, discusses deep learning methods that could be used for content generation purposes but are rarely used today, and envisages some limitations and potential future directions of deep learning for procedural content generation.
description: This is a pre-print of an article published in Neural Computing and Applications. The final authenticated version is available online at: https://doi.org/10.1007/s00521-020-05383-8
Two-step nilpotent Lie algebras with ad-invariant metrics and a special kind of skew-symmetric maps
Creators: name: Ovando, Gabriela
Publisher: name: arXiv
Year: 2006
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 22E25, 22E60, 53B30

description: We prove that a 2-step nilpotent Lie algebras admitting an ad-invariant metric can be constructed from a vector space $\mathfrak v$ endowed with a inner product $$ and an injective homomorphism $ρ: \mathfrak v \to \mathfrak{so}(\mathfrak v)$ satisfying $ρ(v)v=0$ for all $v\in \mathfrak v$. The corresponding simply connected pseudo-Riemannian Lie groups are flat and any isometry fixing the identity element does not depend on $ρ$. The description allows to construct examples starting with a compact semisimple Lie algebra and it is useful to show some applications.
description: 17 pages
Educación Popular sobre el DNU
Creators: name: Bettucci, Santiago
name: Katz, Mariana
name: Visotsky, Jessica
name: Quiroga, Andrea
Publisher: name: PGI «Interseccionalidades y pedagogías críticas en derechos humanos en clave territorial:  abordajes desde la  investigación participante y las metodologías cualitativas». Universidad Nacional del Sur, Bahía Blanca, Argentina.
Year: 2023

description: Material pedagógico construido para aprender acerca de los DNU y en específico analizar el DNU presentado en Argentina.
Shear Viscosity in the Strong Interaction Regime of a p-wave Superfluid Fermi Gas
Creators: name: Moniri, Seyed Mostafa
name: Yavari, Heshmatollah
name: Darsheshdar, Elnaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The $p$-wave superfluid state is a promising spin-triplet and non $s$-wave pairing state in an ultracold Fermi gas. In this work we study the low-temperature shear viscosity of a one-component $p$-wave superfluid Fermi gas, by means of Kubo formalism. Our study is done in the strong-coupling limit where Fermi superfluid reduces into a system of composite bosons. Taking into account ${{p}_{x}}$-wave Cooper channel in the self-energy, the viscous relaxation rates are determined. The relaxation rates related to these interactions are calculated as a function of temperature. Their temperature dependence is different from the $s$-wave superfluid Fermi gas, and this is due to the anisotropic pairing interaction in the $p$-wave superfluid. Our results contribute to understand how this anisotropy affects transport properties of this unconventional superfluid Fermi gas in low temperature limit.
A simulator for maxillo-facial surgery integrating cephalometry and orthodontia
Creators: name: Bettega, Georges
name: Payan, Yohan
name: Mollard, Benoit
name: Boyer, Anthony
name: Raphaël, Bernard
name: Lavallee, Stéphane
Publisher: name: arXiv
Year: 2006
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Objectives : This paper presents a new simulator for maxillo-facial surgery, that gathers the dental and the maxillo-facial analyses together into a single computer-assisted procedure. The idea is first to propose a repositioning of the maxilla, via the introduction of a 3D cephalometry, applied to a 3D virtual model of the patient's skull. Then, orthodontic data are integrated into this model, thanks to optical measurements of teeth plaster casts. Materials and Methods : The feasibility of the maxillo-facial demonstrator was first evaluated on a dry skull. To simulate malformations (and thus to simulate a "real" patient), the skull was modified and manually cut by the surgeon, in order to generate a given maxillo-facial malformation (with asymmetries in the sagittal, frontal and axial planes). Results : The validation of our simulator consisted in evaluating its ability to propose a bone repositioning diagnosis that will put the skull as it was in its original configuration. A first qualitative validation is provided in this paper, with a 1.5-mm error in the repositioning diagnosis. Conclusions : These results mainly validate the concept of a maxillo-facial numerical simulator that integrates 3D cephalometry and guarantees a correct dental occlusion.
การศึกษาเปรียบเทียบประสิทธิภาพรอยรองเท้าแฝงจากคราบเลือดบนผ้าต่างชนิดกันด้วยเทคนิคลูโคมาลาไคท์กรีน และลูมินอล
Creators: name: ญาน์ฐิตา วรเดช
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: รอยรองเท้าแฝง
คราบเลือด
ลูโคมาลาไคท์กรีน
ลูมินอล

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 3-18
Phototactic Clustering of Swimming Micro-organisms in a Turbulent Velocity Field
Creators: name: Torney, Colin
name: Neufeld, Zoltan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the distribution of swimming micro-organisms advected by a model turbulent flow and attracted towards a localised light source through phototaxis. It is shown that particles aggregate along a dynamical attractor with fractal measure whose dimension depends on the strength of the phototaxis. Using an effective diffusion approximation for the flow we derive an analytic expression for the phototactic gain (increase in light exposure over the aggregate) and by extension an accurate prediction for the fractal dimension based on the properties of the advection dynamics and the statistics of the attracting field. This shows that the fractal characteristics of the aggregate are determined by the non-dimensional ratio of the kinetic energy of swimming to that of the turbulent flow.
The multi-time correlation functions, free white noise, and the generalized Poisson statistics in the low density limit
Creators: name: Pechen, Alexander
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the present paper the low density limit of the non-chronological multitime correlation functions of boson number type operators is investigated. We prove that the limiting truncated non-chronological correlation can be computed using only a sub-class of diagrams associated to non-crossing pair partitions and thus coincide with the non-truncated correlation functions of suitable free number operators. The independent in the limit subalgebras are found and the limiting statistics is investigated. In particular, it is found that the cumulants of certain elements coincide in the limit with the cumulants of the Poisson distribution. An explicit representation of the limiting correlation functions and thus of the limiting algebra is constructed in a special case through suitably defined quantum white noise operators.
description: 14 pages
Influences of tongue biomechanics on speech movements during the production of velar stop consonants: a modeling study
Creators: name: Perrier, Pascal
name: Payan, Yohan
name: Zandipour, Majid
name: Perkell, Joseph
Publisher: name: arXiv
Year: 2006
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: This study explores the following hypothesis: forward looping movements of the tongue that are observed in VCV sequences are due partly to the anatomical arrangement of the tongue muscles and how they are used to produce a velar closure. The study uses an anatomically based 2D biomechanical tongue model. Tissue elastic properties are accounted for in finite-element modeling, and movement is controlled by constant-rate control parameter shifts. Tongue raising and lowering movements are produced by the model with the combined actions of the genioglossus, styloglossus and hyoglossus. Simulations of V1CV2 movements were made, where C is a velar consonant and V is [a], [i] or [u]. If V1 is one of the vowels [a] and [u], the resulting trajectories describe movements that begin to loop forward before consonant closure and continue to slide along the palate during the closure. This prediction is in agreement with classical data published in the literature. If V1 is vowel [i], we observe a small backward movement. This is also in agreement with some measurements on human speakers, but it is also in contradiction with the original data published by Houde (1967). These observations support the idea that the biomechanical properties of the tongue could be the main factor responsible for the forward loops when V1 is a back vowel. In the left [i] context, it seems that additional factors have to be taken into considerations, in order to explain the observations made on some speakers
Research challenge: publishing data by schoolchildren
Creators: name: Kiessling, Tim
Publisher: name: Zenodo
Year: 2024
Subjects: citizen science
schoolkids
research challenge
data quality

description: Presentation about the challenge to be able to publish citizen science data collected by schoolchildren in the program Plastic Pirates. Given for a class held by Michelle Adams at Dalhousie University (Canada, 25th of September 2024).
The Astrophysical Distance Scale III: Distance to the Local Group Galaxy WLM using Multi-Wavelength Observations of the Tip of the Red Giant Branch, Cepheids, and JAGB Stars
Creators: name: Lee, Abigail J.
name: Freedman, Wendy L.
name: Madore, Barry F.
name: Owens, Kayla A.
name: Monson, Andrew J.
name: Hoyt, Taylor J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The local determination of the Hubble Constant sits at a crossroad. Current estimates of the local expansion rate of the Universe differ by about 1.7-sigma, derived from the Cepheid and TRGB based calibrations, applied to type Ia supernovae. To help elucidate possible sources of systematic error causing the tension, we show in this study the recently developed distance indicator, the J-region Asymptotic Giant Branch (JAGB) method (arXiv:2005.10792), can serve as an independent cross-check and comparison with other local distance indicators. Furthermore, we make the case that the JAGB method has substantial potential as an independent, precise and accurate calibrator of type Ia supernovae for the determination of H0. Using the Local Group galaxy, WLM we present distance comparisons between the JAGB method, a TRGB measurement at near-infrared (JHK) wavelengths, a TRGB measurement in the optical I band, and a multi-wavelength Cepheid period-luminosity relation determination. We find: $μ_0$ (JAGB) = 24.97 +/- 0.02 (stat) +/- 0.04 (sys) mag, $μ_0$ (TRGB NIR) = 24.98 +/- 0.04 stat) +/- 0.07 (sys) mag, $μ_0$ (TRGB F814W) = 24.93 +/- 0.02 (stat) +/- 0.06 (sys) mag, $μ_0$ (Cepheids) = 24.98 +/- 0.03 (stat) +/- 0.04 (sys) mag. All four methods are in good agreement, confirming the local self-consistency of the four distance scales at the 3% level, and adding confidence that the JAGB method is as accurate and as precise a distance indicator as either of the other three astrophysically-based methods.
description: Accepted for publication in ApJ, 21 pages, 10 figures, 5 tables
การศึกษาการคงอยู่ของลายนิ้วมือแฝงบนกระสุนปืนขนาด 9 มิลลิเมตร ที่แช่น้ำโดยวิธี Small Particle Reagent และ Perma blue
Creators: name: มนต์ทิพย์ ประเสริฐพรศักดิ์
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: ลายนิ้วมือแฝง
กระสุนปืน
Small Particle Reagent,Perma blue

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 19-29
ตู้ฟักไข่ต้นทุนต่ำสำหรับชุมชน
Creators: name: ยุธนา ศรีอุดม
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: ตู้ฟักไข่
ชุมชน
ต้นทุนตํ่า
ไข่ไก

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 30-40
Μελέτη των χαρακτηριστικών ενός μέσης κλίμακας νεφικού συστήματος κατακόρυφης ανάπτυξης με τη χρήση δορυφορικών εικόνων
Creators: name: Κέππας, Σταύρος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Δορυφορική μετεωρολογία
Ελλάδα
Σύστημα κατακόρυφης ανάπτυξης
Satellite meteorology
Greece
Mesoscale Convective System

description: Στην παρούσα εργασία μελετώνται, αρχικά, τα συνοπτικά και δυναμικά χαρακτηριστικά της δομής της τροπόσφαιρας πριν και κατά τη διάρκεια της δράσης ενός MCS που δημιουργήθηκε (και διαλύθηκε) πάνω από τον ελλαδικό χώρο στις 5 Ιουνίου του 2010. Ο βασικός σκοπός της εργασίας αυτής είναι η αναγνώριση του εξεταζόμενου καταιγιδοφόρου νεφικού συστήματος και η ανάδειξη της χρήσης των δορυφορικών προϊόντων, που προέρχονται από τον δορυφόρο Meteosat 2ης γενιάς, μεμονωμένα αλλά και συνδυαστικά, ώστε να προσδιοριστούν με τον καλύτερο δυνατό τρόπο τα χαρακτηριστικά ενός MCS. Σημαντική για την εξέλιξη του MCS θεωρείται η θέση του υποτροπικού αεροχειμάρρου, αλλά και του αυλώνα, όπως αυτός αποτυπώνεται στα 500 hPa. Όσον αφορά τη χρήση των δορυφορικών προϊόντων, τα κανάλια των υδρατμών (μεμονωμένα ή σε συνδυασμό μεταξύ τους ή και με άλλα κανάλια) συνεισέφεραν σημαντικά στον προσδιορισμό των συνοπτικών και δυναμικών χαρακτηριστικών της ατμόσφαιρας, ενώ πολύ σημαντικές πληροφορίες για το ύψος των νεφών και την ύπαρξη ισχυρών ανοδικών ρευμάτων μπορούν να ληφθούν με τη μέθοδο παράθεσης εικόνων (sandwich product) μεταξύ του ορατού υψηλής ευκρίνειας και εικόνων στην περιοχή του υπερύθρου, συνδυαστικές εικόνες μεθοδολογίας RGB ή εικόνες από διαφορές καναλιών, οι οποίες υποδεικνύουν τις περιοχές με σημαντική κατακόρυφη ανάπτυξη. Τέλος, ιδιαίτερα λεπτομερειακή ανάλυση για την ερμηνεία των χαρακτηριστικών και της εξέλιξης του MCS προσφέρεται από τους συνδυασμούς Storm Day και Air Mass αντίστοιχα.
description: The main objective of this work is the study of a Mesoscale Convective System (MCS) which was born and dissipated) over Greece on June 5th, 2010, and the examination of the potential of using - separately or in combination - satellite products derived from the Meteosat Second Generation satellite in order to determine the most important characteristics of the MCS. First, synoptic and dynamic characteristics of the troposphere are investigated before and during the occurrence of the MCS. The position of subtropical jetstream (at 300 hPa) and upper trough (at 500 hPa) was found to be very important for the evolution of the MCS. With regards to the satellite products, water vapor channels (separately and combined) contributed significantly to the determination of synoptic and dynamic characteristics of atmosphere. In addition, the sandwich product between High Resolution Visible channel (HRV) and infrared or RGB or brightness temperature difference images can give much information about the height of cloud tops and the existence of strong updrafts. The sandwich product can indicate regions of a cloud in which important vertical development occurs. Finally, RGB combinations of Storm Day and Air Mass are very useful for a detailed interpretation of the characteristics and the evolution of MCS.
คุณสมบัติการกำบังรังสีแกมมา ของอิฐมวลเบาที่ผสมเถ้าแกลบบดละเอียด
Creators: name: กิตติศักดิ์ ศรีวงค์ษา
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: อิฐมวลเบา
สัมประสิทธิ์การลดทอนเชิงมวล
ค่าความหนาครึ่งค่า
ค่าเส้นทางอิสระเฉลี่ย

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 41-50
The empirical Earth rotation model from VLBI observations
Creators: name: Petrov, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AIMS: An alternative to the traditional method for modeling kinematics of the Earth's rotation is proposed. The purpose of developing the new approach is to provide a self-consistent and simple description of the Earth's rotation in a way that can be estimated directly from observations without using intermediate quantities. METHODS: Instead of estimating the time series of pole coordinates, the UT1--TAI angles, their rates, and the daily offsets of nutation, it is proposed to estimate coefficients of the expansion of a small perturbational rotation vector into basis functions. The resulting transformation from the terrestrial coordinate system to the celestial coordinate system is formulated as a product of an a priori matrix of a finite rotation and an empirical vector of a residual perturbational rotation. In the framework of this approach, the specific choice of the a priori matrix is irrelevant, provided the angles of the residual rotation are small enough to neglect their squares. The coefficients of the expansion into the B-spline and Fourier bases, together with estimates of other nuisance parameters, are evaluated directly from observations of time delay or time range in a single least square solution. RESULTS: This approach was successfully implemented in a computer program for processing VLBI observations. The dataset from 1984 through 2006 was analyzed. The new procedure adequately represents the Earth's rotation, including slowly varying changes in UT1--TAI and polar motion, the forced nutations, the free core nutation, and the high frequency variations of polar motion and UT1.
description: 15 pages, 10 figures, Published in Astronomy and Astrophysics. For numerical tables see http://vlbi.gsfc.nasa.gov/erm
title: Αναδιαμόρφωση ενός συμπιεσμένου αστικού κενού: Εγχείρημα ενοποίησης του βιομηχανικού, αστικού, τουριστικού και παραθαλάσσιου τοπίου της Κω
title: Reconfiguration of a compressed urban void: A project for the unification of the industrial, urban, touristic, and coastal landscape of Kos island
Creators: name: Δρεμπελα Μαρια
Publisher: name: Technical University of Crete
Year: 2024

description: Η πρώην βιομηχανική περιοχή της Κω βρίσκεται στο παραλιακό μέτωπο του οικισμού της Λάμπης και αποτελεί μία τοποθεσία με σημαντική ιστορική αξία και έντονη συναισθηματική σημασία για τους κατοίκους. Διασώζονται τέσσερα εγκαταλελειμμένα βιομηχανικά κτήρια, από διαφορετικές φάσεις της βιομηχανικής ανάπτυξης του νησιού καθώς και τμήματα του εξοπλισμού τους. Το αστικό κενό μέσα στο οποίο βρίσκονται τα ερειπωμένα εργοστάσια λειτουργεί ως αυστηρό όριο μεταξύ της μετάβασης από την μικροκλίμακα της γειτονιάς σε αυτή των μεγάλων ξενοδοχειακών εγκαταστάσεων.
Η παρούσα εργασία στοχεύει στην η ενεργοποίηση του παλιού εργοστασιακού αποθέματος καθώς και στην ενοποίηση του βιομηχανικού, αστικού, τουριστικού και παραθαλάσσιου τοπίου μέσω του επανασχεδιασμού και της ένταξης νέων χρήσεων ως μέσο μετάβασης. Για την ανάπλαση της περιοχής επιλέχθηκαν χρήσεις πολιτισμού, εκπαίδευσης, αναψυχής καθώς και χρήσεις κατοικίας με στόχο την αύξηση επισκεψιμότητας της περιοχής καθ’όλη τη διαρκεια του χρόνου και την πολιτιστική αναβάθμισή της. Παράλληλα, γίνεται ανάπλαση της παραλιακής ζώνης μέσω αστικού και τοπιακού σχεδιασμού καθώς και  επιμέρους σημειακές επεμβάσεις αστικού χαρακτήρα στην κλίμακα της γειτονιάς.
Magnetic modelling and tomography: First steps towards a consistent reconstruction of the solar corona
Creators: name: Wiegelmann, T.
name: Inhester, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We undertake a first attempt towards a consistent reconstruction of the coronal magnetic field and the coronal density structure. We consider a stationary solar corona which has to obey the equations of magnetohydrostatics. We solve these equations with help of a newly developed optimization scheme. As a first step we illustrate how tomographic information can be included into the reconstruction of coronal magnetic fields. In a second step we use coronal magnetic field information to improve the tomographic inversion process. As input the scheme requires magnetic field measurements on the photosphere from vector-magnetographs and the line-of-sight integrated density distribution from coronagraphs. We test our codes with well known analytic magnetohydrostatic equilibria and models. The program is planed for use within the STEREO mission.
description: 29 pages, 6 figures
The effects of three-dimensional radiative transfer on the resonance polarization of the Ca I 4227 $\mathrm{Å}$ line
Creators: name: Bestard, J. Jaume
name: Bueno, J. Trujillo
name: Štěpán, J.
name: Alemán, T. del Pino
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The sizable linear polarization signals produced by the scattering of anisotropic radiation in the core of the Ca I 4227 $\mathrm{Å}$ line constitute an important observable for probing the inhomogeneous and dynamic plasma of the lower solar chromosphere. Here we show the results of a three-dimensional (3D) radiative transfer complete frequency redistribution (CRD) investigation of the line's scattering polarization in a magneto-hydrodynamical 3D model of the solar atmosphere. We take into account not only the Hanle effect produced by the model's magnetic field, but also the symmetry breaking caused by the horizontal inhomogeneities and macroscopic velocity gradients. The spatial gradients of the horizontal components of the macroscopic velocities produce very significant forward scattering polarization signals without the need of magnetic fields, while the Hanle effect tends to depolarize them at the locations where the model's magnetic field is stronger than about 5 G. The standard 1.5D approximation is found to be unsuitable for understanding the line's scattering polarization, but we introduce a novel improvement to this approximation that produces results in qualitative agreement with the full 3D results. The instrumental degradation of the calculated polarization signals is also investigated, showing what can we expect to observe with the Visible Spectro-Polarimeter at the upcoming Daniel K. Inouye Solar Telescope.
description: 18 pages, 12 figures; accepted in ApJ
Hubble Meets Planck: A Cosmic Peek at Quantum Foam
Creators: name: Ng, Y. Jack
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: If spacetime undergoes quantum fluctuations, an electromagnetic wavefront will acquire uncertainties in direction as well as phase as it propagates through spacetime. These uncertainties can show up in interferometric observations of distant quasars as a decreased fringe visibility. The Very Large Telescope and Keck interferometers may be on the verge of probing spacetime fluctuations which, we also argue, have repercussions for cosmology, requiring the existence of dark energy/matter, the critical cosmic energy density, and accelerating cosmic expansion in the present era.
description: 5 pages, LaTeX; talk given at the 11th Marcel Grossman Meeting (Berlin, 2006 summer)
Synthesis and reactivity of macrocyclic β-keto lactones
Creators: name: Sharadendu, Anurag
Publisher: name: University of British Columbia
Year: 2009

description: As a part of a continuing study of the chemistry and conformational behaviour of macrocyclic β-keto lactones, 3-oxo-13-tetradecanolide (74) and 3-oxo-15-hexadecanolide (84) were synthesized via intra- and intermolecular alcoholysis of hydroxy Meldrum's acid derivatives. A number of 14- and 16-membered lactones, derived from 74 and 84 were used to investigate a series of alkylation and reduction reactions. [more abstract available in pdf]
Big Green at WNUT 2020 Shared Task-1: Relation Extraction as Contextualized Sequence Classification
Creators: name: Miller, Chris
name: Vosoughi, Soroush
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Relation and event extraction is an important task in natural language processing. We introduce a system which uses contextualized knowledge graph completion to classify relations and events between known entities in a noisy text environment. We report results which show that our system is able to effectively extract relations and events from a dataset of wet lab protocols.
description: Proceedings of the 6th Workshop on Noisy User-generated Text (W-NUT) at EMNLP 2020
Evidence for stellar driven outflows from the Classical T Tauri star RY Tau
Creators: name: de Castro, Ana I. Gomez
name: Verdugo, Eva
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: RY Tau is a rapidly rotating Classical T Tauri star observed close to edge-on. The combination of new HST/STIS observations obtained in 2001 with HST/GHRS Archive data from 1993 has allowed us to get, for the first time, information on the thermal structure and the velocity law of the wind. The repeated observations of the Si III] and C III] lines show a lack of changes with time in the blue side of the profile(dominated by the wind contribution). Very high temperature plasma (log Te = 4.8) is detected at densities of 9.5
description: 11pages, 3 figures
Τεχνικές Υποχώρων με Χρήση Λαπλασιανής Διακριτικής Ανάλυσης Εδραίων Διανυσμάτων.:
Creators: name: Μπουζάς, Δημήτριος Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Μείωση Διάστασης Δείγματος
Λαπλασιανές Μηχανές Εδραίων Διανυσμάτων
Μετασχηματισμός Αποπλυθωρισμού
Dimensionality Reduction
Laplacian Support Vector Machines
Deflation Transformation

description: Στην παρούσα εργασία προτείνεται μια νέα μέθοδος μείωσης διάστασης δείγματος που βασίζεται σε διαδοχικές προβολές Λαπλασιανών μηχανών εδραίων διανυσμάτων (Laplacian Support Vector Machines) σε ορθογώνιους αποπληθωρισμένους υπόχωρους (Deflated Sub-Spaces). Η προτεινόμενη μέθοδος, που ονομάζεται Λαπλασιανή ∆ιακριτική Ανάλυση Εδραίων ∆ιανυσμάτων (Laplacian Support Vector Analysis), παράγει διανύσματα προβολής που διατηρούν τη διακριτική πληροφορία μεταξύ των κλάσεων του δείγματος, η οποία βρίσκεται σε ορθογώνιους υπόχωρους σε σχέση με τον αρχικό διανυσματικό χώρο του δείγματος. Στην παρούσα εργασία αποδεικνύουμε ότι τα βέλτιστα διανύσματα προβολής σε αυτούς τους αποπληθωρισμένους υποχώρους μπορούν να υπολογιστούν με τη διαδοχική εκπαίδευση μιας κλασικής μηχανής εδραίων διανυσμάτων (Support Vector Machine) με ειδικά σχεδιασμένους αποπληθωρισμένους πυρήνες (Deflated Kernels). Τα διανύσματα προβολής που προκύπτουν διατηρούν και ενισχύουν τη διακριτική πληροφορία μεταξύ των κλάσεων του δείγματος. Στην ανάλυσή μας, αποδεικνύεται ότι η τεχνική μας μπορεί να εφαρμοστεί και στον αρχικό χώρο του δείγματος αλλά και σε χώρους Hilbert (Hilbert Spaces) χρησιμοποιώντας το τέχνασμα πυρήνα (Kernel Trick), επεκτείνοντας έτσι την τεχνική μας για παραγωγή μη γραμμικών προβολών. Επίσης, επεκτείνουμε την τεχνική μας στη διαχείριση δειγμάτων με περισσότερες από δύο κλάσεις. Εκτεταμένα πειραματικά αποτελέσματα σε διάφορα σύνολα δεδομένων αναφοράς δείχνουν τη δύναμη του προτεινόμενου αλγορίθμου.
description: In this master thesis we propose a novel dimensionality reduction method that is based on successive Laplacian SVM projections in orthogonal deflated subspaces. The proposed method, called Laplacian Support Vector Analysis, produces projection vectors that capture the discriminant information that lies in the sub- space orthogonal to the standard Laplacian SVMs. We show that the optimal vectors on these deflated subspaces can be computed by successively training a standard SVM with specially designed deflation kernels. The resulting normal vectors contain discriminative information that can be used for feature extraction. In our analysis, we derive an explicit form for the deflation matrix of the mapped features in both the initial and the Hilbert space by using the kernel trick and thus, we can handle linear and non-linear deflation transformations. Furthermore, we extend our method to handle multi-class problems. Experimental results in several benchmark datasets illustrate the strength of the proposed algorithm.
Low-cost Active Dry-Contact Surface EMG Sensor for Bionic Arms
Creators: name: Naim, Asma M.
name: Wickramasinghe, Kithmin
name: De Silva, Ashwin
name: Perera, Malsha V.
name: Lalitharatne, Thilina Dulantha
name: Kappel, Simon L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Surface electromyography (sEMG) is a popular bio-signal used for controlling prostheses and finger gesture recognition mechanisms. Myoelectric prostheses are costly, and most commercially available sEMG acquisition systems are not suitable for real-time gesture recognition. In this paper, a method of acquiring sEMG signals using novel low-cost, active, dry-contact, flexible sensors has been proposed. Since the active sEMG sensor was developed to be used along with a bionic arm, the sensor was tested for its ability to acquire sEMG signals that could be used for real-time classification of five selected gestures. In a study of 4 subjects, the average classification accuracy for real-time gesture classification using the active sEMG sensor system was 85%. The common-mode rejection ratio of the sensor was measured to 59 dB, and thus the sensor's performance was not substantially limited by its active circuitry. The proposed sensors can be interfaced with a variety of amplifiers to perform fully wearable sEMG acquisition. This satisfies the need for a low-cost sEMG acquisition system for prostheses.
description: Paper accepted to IEEE International Conference on Systems, Man, and Cybernetics (SMC) 2020