cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Self-Supervised Feature Map Augmentation (FMA) Loss and Combined Augmentations Finetuning to Efficiently Improve the Robustness of CNNs
Creators: name: Kapoor, Nikhil
name: Yuan, Chun
name: Löhdefink, Jonas
name: Zimmermann, Roland
name: Varghese, Serin
name: Hüger, Fabian
name: Schmidt, Nico
name: Schlicht, Peter
name: Fingscheidt, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep neural networks are often not robust to semantically-irrelevant changes in the input. In this work we address the issue of robustness of state-of-the-art deep convolutional neural networks (CNNs) against commonly occurring distortions in the input such as photometric changes, or the addition of blur and noise. These changes in the input are often accounted for during training in the form of data augmentation. We have two major contributions: First, we propose a new regularization loss called feature-map augmentation (FMA) loss which can be used during finetuning to make a model robust to several distortions in the input. Second, we propose a new combined augmentations (CA) finetuning strategy, that results in a single model that is robust to several augmentation types at the same time in a data-efficient manner. We use the CA strategy to improve an existing state-of-the-art method called stability training (ST). Using CA, on an image classification task with distorted images, we achieve an accuracy improvement of on average 8.94% with FMA and 8.86% with ST absolute on CIFAR-10 and 8.04% with FMA and 8.27% with ST absolute on ImageNet, compared to 1.98% and 2.12%, respectively, with the well known data augmentation method, while keeping the clean baseline performance.
description: Accepted at ACM CSCS 2020 (8 pages, 4 figures)
Uncovering the mechanisms of RPPH1 polyadenylation and exploring how non-canonical polyadenylation influences the RNA landscape in breast cancer
Creators: name: Kavanagh-Beck, Kiarna
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 320505
subject: Medical biochemistry - nucleic acids

description: Alternative polyadenylation is a widespread gene regulation mechanism often overlooked for non-protein coding genes. Here, investigations into alternative polyadenylation of the non-coding gene RPPH1 was performed in breast cancer models. Our findings reveal two different mechanisms are involved in generating the alternative forms. We propose dysregulation of these mechanisms can result in alternative gene expression that is worth further therapeutic consideration. We used transcriptomics to provide further evidence of dysregulated polyadenylation, especially in mitochondrial RNA and suggest a link to the Warburg effect.
Production of K+ and of K- Mesons in Heavy-Ion Collisions from 0.6 to 2.0 AGeV Incident Energy
Creators: name: Foerster, A.
name: Uhlig, F.
name: Boettcher, I.
name: Brill, D.
name: Debowski, M.
name: Dohrmann, F.
name: Grosse, E.
name: Koczon, P.
name: Kohlmeyer, B.
name: Lang, S.
name: Laue, F.
name: Mang, M.
name: Menzel, M.
name: Muentz, C.
name: Naumann, L.
name: Oeschler, H.
name: Ploskon, M.
name: Scheinast, W.
name: Schmah, A.
name: Schuck, T. J.
name: Schwab, E.
name: Senger, P.
name: Shin, Y.
name: Speer, J.
name: Stroebele, H.
name: Sturm, C.
name: Surowka, G.
name: Wagner, A.
name: Walus, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: This paper summarizes the yields and the emission patterns of K+ and of K- mesons measured in inclusive C+C, Ni+Ni and Au+Au collisions at incident energies from 0.6 AGeV to 2.0 AGeV using the Kaon Spectrometer KaoS at GSI. For Ni+Ni collisions at 1.5 and at 1.93 AGeV as well as for Au+Au at 1.5 AGeV detailed results of the multiplicities, of the inverse slope parameters of the energy distributions and of the anisotropies in the angular emission patterns as a function of the collision centrality are presented. When comparing transport-model calculations to the measured K+ production yields an agreement is only obtained for a soft nuclear equation of state (compression modulus KN ~ 200 MeV). The production of K- mesons at energies around 1 to 2 AGeV is dominated by the strangeness-exchange reaction K- N pi Y (Y = Lambda, Sigma) which leads to a coupling between the K- and the K+ yields. However, both particle species show distinct differences in their emission patterns suggesting different freeze-out conditions for K+ and for K- mesons.
description: accepted for publication in Phys. Rev. C 22 pages, 26 figures
Linear theory of wave generation by a moving bottom
Creators: name: Dutykh, Denys
name: Dias, Frédéric
name: Kervella, Youen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: The computation of long wave propagation through the ocean obviously depends on the initial condition. When the waves are generated by a moving bottom, a traditional approach consists in translating the ``frozen'' sea bed deformation to the free surface and propagating it. The present study shows the differences between the classical approach (passive generation) and the active generation where the bottom motion is included. The analytical solutions presented here exhibit some of the drawbacks of passive generation. The linearized solutions seem to be sufficient to consider the generation of water waves by a moving bottom.
description: 9 pages, 2 figures
Radiation Belt Response to Fast Reverse Shock at Geosynchronous Orbit
Creators: name: Bhaskar, Ankush
name: Sibeck, David
name: Kanekal, Shrikanth G.
name: Singer, Howard J.
name: Reeves, Geoffrey
name: Oliveira, Denny M.
name: Kang, Suk-Bin
name: Komar, Colin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Fast reverse shocks (FRSs) cause the magnetosphere to expand, by contrast to the well-known compressions caused by the impact of fast forward shocks (FFS). Usually, FFSs are more geoeffective than FRSs, and consequently, the inner magnetosphere dynamic responses to both shock types can be quite different. In this study, we investigate for the first time the radiation belt response to an FRS impact using multi-satellite observations and numerical simulations. Spacecraft on the dayside observed decreases in magnetic field strength and energetic (~ 40-475 keV) particle fluxes. Timing analysis shows that the magnetic field signature propagated from the dayside to the nightside magnetosphere. Particles with different energies vary simultaneously at each spacecraft, implying a non-dispersive particle response to the shock. Spacecraft located at lower L-shells did not record any significant signatures. The observations indicate a local time dependence of the response associated with the shock inclination, with the clearest signatures being observed in the dusk-midnight sector. Simulations underestimate the amplitude of the magnetic field variations observed on the nightside. The observed decreases in the electron intensities result from a combination of radial gradient and adiabatic effects. The radial gradients in the spectral index appear to be the dominant contributor to the observed variations of electrons seen on the dayside (near noon and dusk) and on the nightside (near midnight). This study shows that even an FRS can affect the radiation belts significantly and provides an opportunity to understand their dynamic response to a sudden expansion of the magnetosphere.
description: 14 pages, 8 figures
K^- p scattering length from scattering experiments
Creators: name: Borasoy, B.
name: Meißner, U. -G.
name: Nißler, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The strong K^- p scattering length is extracted within chiral SU(3) unitary approaches from a very large variety of fits to low-energy K^- p scattering data. Very good overall agreement with available scattering data is obtained and the resulting scattering length is compared with the new accurate kaonic hydrogen data from DEAR. The pole structures of the obtained fits to experiment are critically examined.
description: 21 pages, 8 figures, 3 tables
การทดแทนเนื้อตาลผงในผลิตภัณฑ์บะหมี่สด
Creators: name: พรทวี ธนสัมบัณณ์
name: จันทร์จนา ศิริพันธ์วัฒนา
name: สาวิตรี ประสิ่งชอบ
name: นิตยา งามเสงี่ยม
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2557
Subjects: บะหมี่สด,เนื้อตาลผง,แป้งสาลี,คุณค่าทางโภชนาการ

description: 1, 7, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Ανάλυση Δεδομένων Πάλης
Creators: name: Μιγκιπή, Αναστασία Ορέστη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ανάλυση Δεδομένων-Πάλη
Στατιστική-Πάλη
Data analysis-Wrestling
Statistics-Wrestling

description: Η Εξόρυξη Δεδομένων στον Αθλητισμό Data Mining in Sports – ή Sports Data Mining – εξελίσσεται συνεχώς τα τελευταία χρόνια σε μια πληθώρα αθλημάτων, τόσο ατομικών όσο και ομαδικών, από το τζούντο ως το μπέιζμπολ. Η Εξόρυξη Δεδομένων στο άθλημα της Πάλης είναι μια περιοχή πολύ λίγο χαρτογραφημένη, αν όχι ανεξερεύνητη. Η Γυναικεία Πάλη, ή Ελευθέρα Πάλη Γυναικών, Ολυμπιακό άθλημα μόλις από το 2004, δεν έτυχε καλύτερης αντιμετώπισης με ελάχιστες εξαιρέσεις.Η παρούσα εργασία επιχειρεί να προσφέρει στον τομέα αυτό. Γίνεται ανάλυση των Δεδομένων του Παγκοσμίου Πρωταθλήματος Ελευθέρας Πάλης Γυναικών του 2011 που διεξήχθη στην Κωνσταντινούπολη της Τουρκίας, με το δείγμα να περιλαμβάνει τις αθλήτριες που κατέκτησαν από την 1η ως και την 10η θέση σε όλες τις τότε κατηγορίες βάρους, με μια σωρεία διαφορετικών τεχνικών της Εξόρυξης Δεδομένων και της Στατιστικής Επιστήμης. Εφαρμόζονται τεχνικές Περιγραφικής Στατιστικής, μέθοδοι Διερευνητικής Ανάλυσης, εξετάζεται η Μεταβλητότητα και οι Συσχετίσεις ανάμεσα στις μεταβλητές, γίνεται Ανάλυση της Συνδιασποράς τους δημιουργείται Μοντέλο Πρόβλεψης της Τελικής Κατάταξης των αθλητριών, υλοποιούνται Factor Analysis και Συσταδοποίηση (Clustering) τόσο Ιεραρχική (Hierarchical) όσο και Two-Step και Discriminant. Γίνεται Frequent Set Mining τόσο με χρήση του αλγορίθμου Apriori , όσο και της παραλλαγής του Apriori-WQ [].
description: Data Mining in Sports – or Sports Data Mining – has been developing in the last years in a plethora of sports, both individual and team ones, ranging from judo to baseball. Data Mining in Sports in the sport of Wrestling is an area more or less not mapped, if not undiscovered. Women’s Wrestling, or Freestyle Wrestling of Women, an Olympic sport only as of 2004, has not had better treatment, with very few exceptions. The current thesis attempts to distribute in this sector. An analysis is made on the Data of the World Championship of Freestyle Wrestling of Women of 2011, which was held in Istanbul, Turkey, with the sample consisting of the athletes who were in the 1st to 10th places in all the then weight categories, with many different techniques of Data Mining and Statistics. Descriptive Statistics and Exploration Analysis methods are implemented, the Changeability and Correlations are tested, the Covariance is analyzed and a Predictive Model of the final ranking of the athletes is structured, multiple Factor Analyses and Clustering, both Hierarchical and Two-Step and Discriminant are applied. Frequent Set Mining is enacted, both with the Apriori algorithm, as well as its alternation, the Apriori-WQ[].
Trade policy, Intellectual Property and Access to Medicines in Southeast Asia
Creators: name: Tenni, Brigitte
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 440703
subject: Economic development policy
classificationCode: 440799
subject: Policy and administration not elsewhere classified
classificationCode: 440808
subject: International relations
classificationCode: 420602
subject: Health equity
classificationCode: 420603
subject: Health promotion

description: Submitted in total fulfillment of the requirements for the degree of Doctor of Philosophy to the School of Psychology and Public Health, La Trobe University, Victoria, Australia.
Regularization of supersymmetric theories - recent progress
Creators: name: Stöckinger, Dominik
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: General issues concerning the regularization of supersymmetric theories using dimensional regularization and dimensional reduction are reviewed. Recent progress on problems of dimensional reduction related to factorization, supersymmetry, Higgs boson mass calculations, and mathematical consistency is discussed.
description: 5 pages, talk at the 7th International Symposium on Radiative Corrections (RADCOR2005), Shonan Village, Japan, Oct. 2-7, 2005
Quantum Equivalence of NC and YM Gauge Theories in 2 D and Matrix Theory
Creators: name: Ydri, Badis
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct noncommutative U(1) gauge theory on the fuzzy sphere S^2_N as a unitary 2N x 2N matrix model. In the quantum theory the model is equivalent to a nonabelian U(N) Yang-Mills theory on a 2 dimensional lattice with 2 plaquettes. This equivalence holds in the " fuzzy sphere" phase where we observe a 3rd order phase transition between weak-coupling and strong-coupling phases of the gauge theory. In the ``matrix'' phase we have a U(N) gauge theory on a single point.
description: 13 pages, one graph
การใช้สัตว์ไม่มีกระดูกสันหลังหน้าดินขนาดใหญ่เพื่อการติดตามตรวจสอบทางชีวภาพ
Creators: name: อิสระ ธานี
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2557
Subjects: สัตว์ไม่มีกระดูกสันหลังหน้าดิน,ดัชนีชีวภาพ,การติดตามตรวจสอบทางชีวภาพ,คุณภาพน้ำ

description: 1, 7, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Topological Dynamics of Volume-Preserving Maps Without an Equatorial Heteroclinic Curve
Creators: name: Arenson, Joshua G.
name: Mitchell, Kevin A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Understanding the topological structure of phase space for dynamical systems in higher dimensions is critical for numerous applications, including the computation of chemical reaction rates and transport of objects in the solar system. Many topological techniques have been developed to study maps of two-dimensional (2D) phase spaces, but extending these techniques to higher dimensions is often a major challenge or even impossible. Previously, one such technique, homotopic lobe dynamics (HLD), was generalized to analyze the stable and unstable manifolds of hyperbolic fixed points for volume-preserving maps in three dimensions. This prior work assumed the existence of an equatorial heteroclinic intersection curve, which was the natural generalization of the 2D case. The present work extends the previous analysis to the case where no such equatorial curve exists, but where intersection curves, connecting fixed points may exist. In order to extend HLD to this case, we shift our perspective from the invariant manifolds of the fixed points to the invariant manifolds of the invariant circle formed by the fixed-point-to-fixed-point intersections. The output of the HLD technique is a symbolic description of the minimal underlying topology of the invariant manifolds. We demonstrate this approach through a series of examples.
The effect of environmental print reading on the literacy development of kindergarten children
Creators: name: Salewski, Wanda Cecile
Publisher: name: University of British Columbia
Year: 2009

description: This study examined the use of environmental print in the literacy programs of kindergarten children. The purpose of the study was to investigate whether a treatment using environmental logos would effect a transfer of learning between the reading of environmental print and conventional print. The sample of 68 kindergarten children was drawn from two elementary schools in Vancouver, British Columbia, each enrolling two morning kindergarten classes. The classes in each school were randomly assigned to control or experimental groups. A 20 item logo inventory and Clay's Word Test (1979) were administered to all subjects in order to generate pretest and posttest scores. The logo inventory was comprised of three different presentations of each logo, full context, partial context, and context free. Each context varied i n the amount of supporting, environmental cues included in the presentation. Treatment for the experimental group consisted of the presentation of two logos, a pocket chart activity , and a journal activity for each of the eight sessions. The control group participated in story telling and related journal activities for the same number of sessions as the experimental group. Analysis of variance and subsequent t-tests resulted in significantly different mean gain scores for the experimental group over the control. This treatment effect provided evidence in support of the use of environmental print reading in the literacy programs of young children.
fastNLO: Fast pQCD Calculations for PDF Fits
Creators: name: Kluge, T.
name: Rabbertz, K.
name: Wobisch, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a method for very fast repeated computations of higher-order cross sections in hadron-induced processes for arbitrary parton density functions. A full implementation of the method for computations of jet cross sections in Deep-Inelastic Scattering and in Hadron-Hadron Collisions is offered by the "fastNLO" project. A web-interface for online calculations and user code can be found at http://hepforge.cedar.ac.uk/fastnlo/ .
description: 8 pages, 5 figures, To appear in the Final Report of the QCD working group of the Tevatron-for-LHC Workshop, eds. M. Carena and S. Mrenna (2006). A slightly shorter version will appear in Proceedings of the XIV Workshop on Deep Inelastic Scattering, April 20-24, 2006 in Tsukuba, Japan
The geometry at infinity of a hyperbolic Riemann surface of infinite type
Creators: name: Haas, Andrew
name: Susskind, Perry
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30F35; 30F45

description: We study geodesics on a planar Riemann surface of infinite type having a single infinite end. Of particular interest is the class of geodesics that go out the infinite end in a most efficient manner. We investigate properties of these geodesics and relate them to the structure of the boundary of a Dirichlet polygon for a Fuchsian group representing the surface.
description: 32 pages
Periodic unique beta-expansions: the Sharkovskii ordering
Creators: name: Allouche, Jean-Paul
name: Clarke, Matthew
name: Sidorov, Nikita
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 37B10, 11A63, 11B85, 68R15

description: Let $β\in(1,2)$. Each $x\in[0,\frac{1}{β-1}]$ can be represented in the form \[ x=\sum_{k=1}^\infty ε_kβ^{-k}, \] where $ε_k\in\{0,1\}$ for all $k$ (a $β$-expansion of $x$). If $β>\frac{1+\sqrt5}{2}$, then, as is well known, there always exist $x\in(0,\frac1{β-1})$ which have a unique $\be$-expansion. In the present paper we study (purely) periodic unique $β$-expansions and show that for each $n\ge2$ there exists $β_n\in[\frac{1+\sqrt5}{2},2)$ such that there are no unique periodic $β$-expansions of smallest period $n$ for $β\leβ_n$ and at least one such expansion for $β>β_n$. Furthermore, we prove that $β_k
description: 21 pages, 3 figures
Dynamics of ion channels via non-Hermitian quantum mechanics
Creators: name: Gulden, Tobias
name: Kamenev, Alex
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study dynamics and thermodynamics of ion channels, considered as effective 1D Coulomb systems. The long range nature of the inter-ion interactions comes about due to the dielectric constants mismatch between the water and lipids, confining the electric filed to stay mostly within the water-filled channel. Statistical mechanics of such Coulomb systems is dominated by entropic effects which may be accurately accounted for by mapping onto an effective quantum mechanics. In presence of multivalent ions the corresponding quantum mechanics appears to be non-Hermitian. In this review we discuss a framework for semiclassical calculations for corresponding non-Hermitian Hamiltonians. Non-Hermiticity elevates WKB action integrals from the real line to closed cycles on a complex Riemann surfaces where direct calculations are not attainable. We circumvent this issue by applying tools from algebraic topology, such as the Picard-Fuchs equation. We discuss how its solutions relate to the thermodynamics and correlation functions of multivalent solutions within long water-filled channels.
description: Invited review, submitted to "Entropy"
An asymptotically compatible treatment of traction loading in linearly elastic peridynamic fracture
Creators: name: Yu, Yue
name: You, Huaiqian
name: Trask, Nathaniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Meshfree discretizations of state-based peridynamic models are attractive due to their ability to naturally describe fracture of general materials. However, two factors conspire to prevent meshfree discretizations of state-based peridynamics from converging to corresponding local solutions as resolution is increased: quadrature error prevents an accurate prediction of bulk mechanics, and the lack of an explicit boundary representation presents challenges when applying traction loads. In this paper, we develop a reformulation of the linear peridynamic solid (LPS) model to address these shortcomings, using improved meshfree quadrature, a reformulation of the nonlocal dilitation, and a consistent handling of the nonlocal traction condition to construct a model with rigorous accuracy guarantees. In particular, these improvements are designed to enforce discrete consistency in the presence of evolving fractures, whose {\it a priori} unknown location render consistent treatment difficult. In the absence of fracture, when a corresponding classical continuum mechanics model exists, our improvements provide asymptotically compatible convergence to corresponding local solutions, eliminating surface effects and issues with traction loading which have historically plagued peridynamic discretizations. When fracture occurs, our formulation automatically provides a sharp representation of the fracture surface by breaking bonds, avoiding the loss of mass. We provide rigorous error analysis and demonstrate convergence for a number of benchmarks, including manufactured solutions, free-surface, nonhomogeneous traction loading, and composite material problems. Finally, we validate simulations of brittle fracture against a recent experiment of dynamic crack branching in soda-lime glass, providing evidence that the scheme yields accurate predictions for practical engineering problems.
Hematology
Creators: name: ทัศนีย์ พาณิชย์กุล
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2557
Subjects: Sanguine,Red Blood Cell,Hematocrit,Viscosity

description: 1, 7, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Giant pulses of pulsar radio emission
Creators: name: Kuzmin, A. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Review report of giant pulses of pulsar radio emission, based on our detections of four new pulsars with giant pulses, and the comparative analysis of the previously known pulsars with giant pulses, including the Crab pulsar and millisecond pulsar PSR B1937+21.
description: Proceedings of the 363. WE-Heraeus Seminar on: Neutron Stars and Pulsars (Posters and contributed talks) Physikzentrum Bad Honnef, Germany, May.14-19, 2006, eds. W.Becker, H.H.Huang, MPE Report 291, pp.72-75
Dynamics of Small Bodies in Orbits Between Jupiter and Saturn
Creators: name: Roberts, Andrew C.
name: Muñoz-Gutiérrez, Marco A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We examine the dynamics of small bodies in orbits similar to that of comet 29P/Schwassmann-Wachmann 1, i.e. near-circular orbits between Jupiter and Saturn. As of late 2019, there are 14 other known bodies in this region that lie in similar orbits. Previous research has shown that this region of the solar system, which in this work we call the "near Centaur region" (NCR), is not stable, suggesting that any bodies found in it would have very short lifetimes. We performed 20 Myr high-precision numerical simulations of the evolution of massless particles, initially located in the Kuiper belt but close to Neptune, with perihelia slightly below 33 au ("Neptune crossers"). Some of these particles quickly migrate inward, passing through the NCR before becoming Jupiter Family Comets. We find that objects in the NCR do indeed generally travel through it very quickly. However, our simulations reveal that resonant behavior in this region is somewhat common and can trap objects for up to 100 Kyr. We summarize the dynamics of 29P and other observed bodies in the region---two of which seem to be clearly exhibiting resonant behavior---and use our simulations to put limits on the reservoir size of the Neptune crossers, which at its time determines the reservoir size of the Kuiper belt. Finally, we put some constraints on the current population of Centaurs and particularly of the NCR population, based on the injection rates required to keep the observed population of Jupiter family comets in steady-state.
description: 15 pages, 11 figures
Experimental study of the competition between Kondo and RKKY interactions for Mn spins in a model alloy system
Creators: name: Prejean, J. J.
name: Lhotel, E.
name: Sulpice, A.
name: Hippert, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The quasicrystal Al-Pd-Mn is a model system for an experimental study of the competition between Ruderman-Kittel-Kasuya-Yoshida (RKKY) and Kondo interactions. First, specific of such alloys, only a few Mn atoms carry an effective spin and their concentration x is tunable over several orders of magnitude, even though the Mn amount is almost constant. Second, the characteristic energy scales for the interactions lie in the Kelvin range. Hence we could study the magnetization on both side of these energy scales, covering a range of temperatures [0.1-100 K] and magnetic fields (mu_B H/k_B= 0 to 5 K) for 22 samples and x varying over 2 decades. Using very general Kondo physics arguments, and thus carrying out the data analysis with no preconceived model, we found a very robust and simple result: The magnetization is a sum of a pure Kondo (T_K=3.35K) and a pure RKKY contributions, whatever the moment concentration is and this surprisingly up to the concentration where the RKKY couplings dominate fully and thus cannot be considered as a perturbation.
description: 18 pages, 18 figures
Proof of the multi-Regge form of QCD amplitudes with gluon exchanges in the NLA
Creators: name: Fadin, V. S.
name: Fiore, R.
name: Kozlov, M. G.
name: Reznichenko, A. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The multi--Regge form of QCD amplitudes with gluon exchanges is proved in the next-to-leading approximation. The proof is based on the bootstrap relations, which are required for the compatibility of this form with the s-channel unitarity. We show that the fulfillment of all these relations ensures the Reggeized form of energy dependent radiative corrections order by order in perturbation theory. Then we prove that all these relations are fulfilled if several bootstrap conditions on the Reggeon vertices and trajectory hold true. Now all these conditions are checked and proved to be satisfied.
description: 15 pages
Κλιματική αλλαγή και επιπτώσεις στις ανάγκες σε νερό, στην απόδοση των καλλιεργειών και στη διαθεσιμότητα των υδατικών πόρων
Creators: name: Κουκούλη, Παναγιώτα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Κλιματική αλλαγή
Ανάγκες σε νερό καλλιεργειών
Προσομοίωση ανάπτυξης καλλιεργειών
Climate change
Crop water requirements
Crop growth simulation

description: Σκοπός της διατριβής ήταν η μελέτη των επιπτώσεων της κλιματικής αλλαγής στις ανάγκες σε νερό, στην απόδοση των καλλιεργειών και στη διαθεσιμότητα των υδατικών πόρων στην περιοχή του Αγίου Μάμα του νομού Χαλκιδικής. Χρησιμοποιήθηκαν τρία σενάρια κλιματικής αλλαγής (Α2, Α1Β και Β1) τα οποία προέκυψαν από τρία μοντέλα γενικής κυκλοφορίας για δύο περιόδους κλιματικής αλλαγής (2020-2050 και 2070-2100) και για την περίοδο αναφοράς (1977-2000). Αρχικά, με βάση τα δεδομένα που λήφθηκαν από τα μοντέλα γενικής κυκλοφορίας, έγινε παραγωγή συνθετικών χρονοσειρών επτά κλιματικών παραμέτρων με τη γεννήτρια καιρού GlimGen οι οποίες αποτυπώνουν τη μελλοντική μεταβολή τους. Στη συνέχεια, με τη βοήθεια των συνθετικών σειρών των κλιματικών παραμέτρων, προσδιορίσθηκαν η εξατμισοδιαπνοή αναφοράς, η εξατμισοδιαπνοή τριών καλλιεργειών (καλαμπόκι, βαμβάκι και ελιά) καθώς και οι καθαρές και ολικές αρδευτικές ανάγκες τους. Επίσης, έγινε εκτίμηση του υδατικού ισοζυγίου στην υδρολογική λεκάνη του ποταμού Ολυνθίου. Τέλος, για την εκτίμηση της επίδρασης της κλιματικής αλλαγής στην απόδοση του βαμβακιού χρησιμοποιήθηκε το μοντέλο προσομοίωσης ανάπτυξης καλλιεργειών CropSyst για τα σενάρια εκπομπών Α2 και Β1 των περιόδων κλιματικής αλλαγής 2070-2100 και 2020-2050 για δύο εναλλακτικές ημερομηνίες σποράς.
description: The aim of the present thesis was the study of the impacts of climate change on crop water requirements, on crop yield and on water recourses availability in Agios Mamas area in the prefecture of Chalkidiki. Three climate change scenarios were used (Α2, Α1Β and Β1) which were taken from three general circulation models for two time periods of climate change (2020-2050 and 2070-2100) and for the baseline period (1977-2000). Initially, based on the data derived from the general circulation models, synthetic time series of seven climate variables were generated using the weather generator, which depict their future change. Subsequently, the reference crop evapotranspiration and the evapotranspiration of three crops (maize, cotton and olive tree) as well as their net and total water requirements were calculated according to the synthetic series of the climate variables. Moreover, the water balance of the water basin of river Olynthios was estimated. Finally, for the assessment of the impact of climate change on cotton yield, the crop growth simulation model CropSyst was used under the A2 and B1 scenarios for the time periods 2020-2050 and 2070-2100, respectively for two different sowing dates.
Large volume behaviour of Yang-Mills propagators
Creators: name: Fischer, Christian S.
name: Maas, Axel
name: Pawlowski, Jan M.
name: von Smekal, Lorenz
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate finite volume effects in the propagators of Landau gauge Yang-Mills theory using Dyson-Schwinger equations on a 4-dimensional torus. In particular, we demonstrate explicitly how the solutions for the gluon and the ghost propagator tend towards their respective infinite volume forms in the corresponding limit. This solves an important open problem of previous studies where the infinite volume limit led to an apparent mismatch, especially of the infrared behaviour, between torus extrapolations and the existing infinite volume solutions obtained in 4-dimensional Euclidean space-time. However, the correct infinite volume limit is approached rather slowly. The typical scales necessary to see the onset of the leading infrared behaviour emerging already imply volumes of at least 10 to 15 fm in lengths. To reliably extract the infrared exponents of the infinite volume solutions requires even much larger ones. While the volumes in the Monte-Carlo simulations available at present are far too small to facilitate that, we obtain a good qualitative agreement of our torus solutions with recent lattice data in comparable volumes.
description: 34 pages, 8 figures; v2: typos corrected, refs. added, version accepted by Annals of Physics
Cities and Street Art. A Sociological Research on 1UP, Mr. Paradox Paradise, Cranio, Blu and Mr. Woodland
Creators: name: Conti, Uliano
Publisher: name: Italian Sociological Review
Year: 2024

description: The paper analyzes the phenomenon of street art and the relationship between street art, graffiti, cities and social actors, such as the audience of the artworks. The paper presents the state of the art related to phenomena of street art, graffiti, and the related subcultures. Then, the article considers original aspects and changes of the relationship between street art and graffiti. This analysis is possible thanks to reference to urban artworks of 1UP collective, Mr. Paradox Paradise, Cranio, Blu, and Mr. Woodland. These artists mark a turning point in the relationship between street art, graffiti, and social actors, and their works are considered as examples for the proposed arguments. In this sense, the global relevance of urban contexts such as Berlin, where some of these artists began their activities, emerges. The changing relationship between street art and graffiti is analyzed in the German capital from the perspective of visual sociology through photographic field research. Photographic research makes the artworks observable and analyzable ex-post. Street art emerges not as a homogeneous phenomenon, but shows different forms of expression, some closely related to traditional graffiti, others profoundly different. Emerging characters are analyzed through the concepts of audience, shock, collective innervation and aura, which refer to the sociological tradition of Walter Benjamin and Siegfried Kracauer, viewed as conceptual lenses for the study of contemporary street art.
description: Italian Sociological Review, Vol. 14 No. 3 (2024)
Ο εικονογραφικός κύκλος των Παθών του Χριστού, στους ναούς της Μακεδονίας κατά την Παλαιολόγεια περίοδο.
Creators: name: Κατσαβέλης, Δημήτριος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ναοί Μακεδονίας
Πάθος
Παλαιολόγοι
Holy Passion
Makedonia
Paleologean dynasty

description: Σκοπός της εργασίας ήταν η μελέτη του εικονογραφικού κύκλου των Παθών του Χριστού σε ναούς της Μακεδονίας κατά την Παλαιολόγεια περίοδο. Παρατίθενται γενικά στοιχεία περί του Ιερού Πάθους και των δημιουργών των τοιχογραφιών, ενώ στην συνέχεια ακολουθεί μία συνοπτική περιγραφή των μνημείων που φιλοξενούν τον εικονογραφικό κύκλο. Το σώμα κειμένου συνεχίζεται με λεπτομερή περιγραφή και ανάλυση των σκηνών του κύκλου, προσθέτοντας όπου απαιτείται συγκρίσεις περί των σπαραγμάτων. Τέλος περιλαμβάνεται ένα παράρτημα με φωτογραφίες για τις συνθέσεις όπου στην βιβλιογραφία η απεικόνισή τους ήταν ελλιπής ή προγενέστερη της συντήρησής τους από τις αρμόδιες υπηρεσίες.
description: The aim of the present survey was the study of the iconographic cycle of the Holy Passion as it was preserved in the churches of Makedonia (Greece) during the Paleologean ages of 1261- 1453. Into the main body there are general clues about the Holy Passion and the painters of the murals, while in another chapter there is a synopsis about the monumental buildings that someone can see these frescoes. Moreover, a detailed description of the painted scenes leads to a comparison between their differences and the whole study ends with an annex that includes photographs of murals that in general bibliography were either missing or if present, were taken before the suitable maintenance of competent authorities.
Do long-duration GRBs follow star formation?
Creators: name: Guetta, Dafne
name: Piran, Tsvi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the luminosity function and rate inferred from the BATSE long bursts peak flux distribution with those inferred from the Swift peak flux distribution. We find that both the BATSE and the Swift peak fluxes can be fitted by the same luminosity function and the two samples are compatible with a population that follows the star formation rate. The estimated local long GRB rate (without beaming corrections) varies by a factor of five from 0.05 Gpc^(-3)yr^(-1) for a rate function that has a large fraction of high redshift bursts to 0.27 Gpc^(-3)yr^(-1) for a rate function that has many local ones. We then turn to compare the BeppoSax/HETE2 and the Swift observed redshift distributions and compare them with the predictions of the luminosity function found. We find that the discrepancy between the BeppoSax/HETE2 and Swift observed redshift distributions is only partially explained by the different thresholds of the detectors and it may indicate strong selection effects. After trying different forms of the star formation rate (SFR) we find that the observed Swift redshift distribution, with more observed high redshift bursts than expected, is inconsistent with a GRB rate that simply follows current models for the SFR. We show that this can be explained by GRB evolution beyond the SFR (more high redshift bursts). Alternatively this can also arise if the luminosity function evolves and earlier bursts were more luminous or if strong selection effects affect the redshift determination.
description: 15 pages, 8 figures, accepted for publication in JCAP
An Observational Study of Engineering Online Education During the COVID-19 Pandemic
Creators: name: Asgari, Shadnaz
name: Trajkovic, Jelena
name: Rahmani, Mehran
name: Zhang, Wenlu
name: Lo, Roger C.
name: Sciortino, Antonella
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Although online education has become a viable and major component of higher education in many fields, its employment in engineering disciplines has been limited. COVID-19 pandemic compelled the global and abrupt conversion of conventional face-to-face instruction to the online format. The negative impact of such sudden change is undeniable. Urgent and careful planning is needed to mitigate pandemic negative effects on engineering education, especially for vulnerable, disadvantaged, and underrepresented students who have to deal with additional challenges (e.g. digital equity gap). To enhance engineering online instruction during the pandemic era, we conducted an observational study at California State University, Long Beach (a minority-serving institution). 110 faculty and 627 students from six engineering departments participated in our surveys and answered quantitative and qualitative questions to highlight the challenges they experienced during the online instruction in Spring 2020. In this work, we present the results of these surveys in detail and propose solutions to address the identified issues including logistical, technical, learning/teaching challenges, assessment methods, and hands-on training. As the pandemic continues, sharing these results with other educators can help with more effective planning and choice of best practices to improve the online engineering education during COVID-19 and beyond.
description: 10 pages, 3 figures, 2 tables
The Hikikomori Phenomenon and Its Evolution in Modern Society: A Systematic Literature Review
Creators: name: Esposito, Vincenzo
Publisher: name: Italian Sociological Review
Year: 2024

description: This paper intends to thoroughly examine the phenomenon called Hikikomori., which was initially studied in Japan in the late 1990s (Saito, 1998). Importantly, in recent years there has been a significant surge in current research efforts aimed at investigating the many aspects of this complex phenomenon.

This article’s objective is to effectively organize and classify various articles discussing the Hikikomori phenomenon. It considers critical factors such as the type of researcher involved, the specific angle or focus of the article, and the disciplinary perspective underpinning it. By examining these elements, readers can gain a more comprehensive and nuanced understanding of this complex and often misunderstood phenomenon.

To achieve our goal, we followed a structured process. Firstly, we extracted articles through Sciilit academic indexing platform. Then, we created an analysis form to enter the collected data. Finally, we analyzed the data using various techniques.
description: Italian Sociological Review, Vol. 14 No. 3 (2024)
Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies
Creators: name: Braun, H.
name: Ditlevsen, P.
name: Chialvo, D. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: North Atlantic climate during glacial times was characterized by large-amplitude switchings, the Dansgaard-Oeschger (DO) events, with an apparent tendency to recur preferably in multiples of about 1470 years. Recent work interpreted these intervals as resulting from a subharmonic response of a highly nonlinear system to quasi-periodic solar forcing plus noise. This hypothesis was challenged as inconsistent with the observed variability in the phase relation between proxies of solar activity and Greenland climate. Here we reject the claim of inconsistency by showing that this phase variability is a robust, generic feature of the nonlinear dynamics of DO events, as described by a model. This variability is expected from the fact that the events are threshold crossing events, resulting from a cooperative process between the periodic forcing and the noise. This process produces a fluctuating phase relation with the periodic forcing, consistent with proxies of solar activity and Greenland climate.
"Favourites of yesterday and today" : Popular radio and risk management
Creators: name: Barry, Graham Dean
Publisher: name: University of British Columbia
Year: 2009

description: This thesis investigates from a social-institutional perspective, the rationale for the dominance of one type of format over another in commercial radio. I argue that the panoptic sorting and selecting of target markets is responsible for the present status quo - radio which is dominated by particular formats and which has come to exclude the diversity that characterized popular radio in the past. In addition, the increasing reliance on information access and control as facilitated by technology, has led many commercial stations to follow the most important demographic group, i.e., the market most sought after by advertisers. Currently, this group is the "baby-boomers", and the proliferation of A/C, Classic Rock, Oldies and "Soft Favourites" stations reflect this strategy. This marketing emphasis also effectively marginalizes the great majority of new, non-mainstream music to non-commercial formats. The Vancouver radio market is investigated in respect to these issues. I present data from interviews with local radio programmers to understand 1. How do the perspectives of station executives affect format decisions? 2. What factors are most influential in determining format and to what degree are these factors standardized? 3\ To what degree is information shared and distributed (i.e., an open market) among competing radio stations? 4. How have format considerations changed over the past twenty years? and 5. To what degree do station executives rely on standardized information collection techniques to influence and/or determine decisions regarding the format? The data from commercial sources are compared with public, college and co-op radio material to highlight the importance of economics in formatting decisions. I suggest that an economically-based rationality characteristic of media operations in a "risk society" largely determines the format possibilities in commercial radio/This in turn, limits the choices available to the radio listener. Although cultural implications-are not discussed in detail, this thesis will provide substance for arguments examining the effects of the exclusion of an important cultural-expressive form from mass distribution.
Magnetic phase diagrams of the generalized spin-one-half Falicov-Kimball model
Creators: name: Zonda, Martin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A combination of small-cluster exact-diagonalization calculations and a well-controlled approximative method is used to examine the ground-state phase diagrams of the spin-one-half Falicov-Kimball model extended by the spin-dependent on-site interaction ($J$) between localized spins and itinerant ($d$) electrons, as well as by external magnetic field ($h$). Both the magnetic ordering and metamagnetic transitions are analysed as functions of $h$ and the number of itinerant electrons ($N_d$) at selected $J$. Various magnetic superstructures including axial and diagonal spin stripes are observed for nonzero values of $J$ and $h$. Moreover, it is shown that increasing $h$ strongly stabilizes the fully and partially polarized states, while the non polarized state is reduced.
description: 11 pages, 4 figures
The Objects and Ikea’s Environmental Imaginary
Creators: name: Barbalace, Francesco
Publisher: name: Italian Sociological Review
Year: 2024

description: The purpose of this article is to illustrate the sociological implications of everyday objects, highlighting the social connections they establish within the collective imaginary. Through theoretical research on the role of objects, it examines the social imaginaries created and institutionalized by specific objects and the community of consumers involved. Ikea, the narratives crafted by corporate marketing, and its products are the specific focus of this study. In the conclusions, the meanings associated with the environmentalism imaginary (of which Ikea is an example) are explored to understand current social dynamics.
description: Italian Sociological Review, Vol. 14 No. 3 (2024)
Cosmic eggs to relax the cosmological constant
Creators: name: Hertog, Thomas
name: Tielemans, Rob
name: Van Riet, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In theories with extra dimensions, the cosmological hierarchy problem can be thought of as the unnaturally large radius of the observable universe in Kaluza-Klein units. We sketch a dynamical mechanism that relaxes this. In the early universe scenario we propose, three large spatial dimensions arise through tunneling from a 'cosmic egg', an effectively one-dimensional configuration with all spatial dimensions compact and of comparable, small size. If the string landscape is dominated by low-dimensional compactifications, cosmic eggs would be natural initial conditions for cosmology. A quantum cosmological treatment of a toy model egg predicts that, in a variant of the Hartle-Hawking state, cosmic eggs break to form higher dimensional universes with a small, but positive cosmological constant or quintessence energy. Hence cosmic egg cosmology yields a scenario in which the seemingly unnaturally small observed value of the vacuum energy can arise from natural initial conditions.
description: 11 pages, 4 figures, 1 appendix