cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
La storia ambientale in laboratorio: un itinerario didattico sulla curtis altomedievale
Creators: name: Casella, Zeno
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2024

description: Questo lavoro di ricerca indaga l’impatto dell’insegnamento della storia ambientale sulle disposizioni ad agire degli allievi di scuola media. Attraverso la somministrazione di due questionari in entrata ed in uscita da un itinerario didattico della durata di circa un mese, sono stati raccolti ed analizzati vari dati sulla loro percezione del rapporto tra essere umano ed ambiente. L’itinerario didattico si è concentrato sullo sviluppo del sistema curtense in Europa e sul suo rapporto con l’ambiente circostante, di cui si sono affrontate le differenze tra epoca romana e Alto Medioevo. Svoltosi in un contesto sperimentale ad effettivo ridotto, tale percorso è stato concepito e proposto in chiave laboratoriale, attraverso un lavoro a gruppi relativo a vari ambiti del sistema curtense e la realizzazione di un cartellone finale da esporre al resto della classe. I dati raccolti attraverso i questionari hanno evidenziato uno sviluppo positivo delle disposizioni ad agire degli allievi, con un passaggio da una concezione individuale ed unidirezionale della relazione uomo-ambiente ad una concezione più globale e sistemica di tale rapporto. Gli allievi hanno anche dimostrato capacità riflessiva e critica sull’argomento, confrontandosi con l’attualità di tale rapporto e sviluppando una certa consapevolezza della sua complessità. Relatore: Daniele Bollini.
Additional file 1 of Does China’s Equalization of Basic Public Health Services policy improve delivery care for migrant women?
Creators: name: Zou, Hong
name: Xiao, Han
name: Xu, Hongwei
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 1: Table S1. List of treatment cities and control cities. Table S2. Tests of the differences-in-difference parallel trends. Table S3. Differences-in-difference regression estimates from robust check. Table S4. Differences-in-difference regression estimates from placebo tests. Figure S1. Geographic distribution of number of births in destination cities per year from the 2010–2016 China Migrants Dynamic Survey. Figure S2. Trends of average birth rates at migration destination.
Complex room temperature ferrimagnetism induced by zigzag oxygen-vacancy stripes in Sr3YCo4O10.72
Creators: name: Khalyavin, D. D.
name: Chapon, L. C.
name: Suard, E.
name: Parker, J. E.
name: Thompson, S. P.
name: Yaremchenko, A. A.
name: Kharton, V. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The high temperature ferromagnetism in Sr3YCo4O10+delta perovskite, whose origin has been the subject of a considerable debate, has been studied by neutron powder diffraction and synchrotron X-ray diffraction measurements. Oxygen vacancy ordering creates a complex pattern of zigzag stripes in the oxygen-deficient CoO4+delta layers, where the Co ions are found in three distinct coordinations. The symmetry of this unprecedented structural modulation, in conjunction with the existence of different Co spin states, provide a straightforward explanation for the appearance of ferrimagnetism. A model for the magnetic structure compatible with these structural features is proposed, based on the refinement of powder neutron data. The macroscopic moment as a function of temperature that can be calculated from the values of the ordered spins extracted from refinements, is in excellent agreement with bulk magnetization. Unlike previous models, a collinear G-type magnetic structure with uncompensated moments due to distinct spin-states of Co imposed by different coordination is found.
Gas emission from debris disks around A and F stars
Creators: name: Zagorovsky, Kyryl
name: Brandeker, Alexis
name: Wu, Yanqin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Gas has been detected in a number of debris disk systems. This gas may have arisen from grain sublimation or grain photodesorption. It interacts with the surrounding dust grains through a number of charge and heat exchanges. Studying the chemical composition and physical state of this gas can therefore reveal much about the dust component in these debris disks. We have produced a new code, ontario, to address gas emission from dusty gas-poor disks around A--F stars. This code computes the gas ionization and thermal balance self-consistently, with particular care taken of heating/cooling mechanisms. Line emission spectra are then produced for each species (up to zinc) by statistical equilibrium calculations of the atomic/ionic energy levels. For parameters that resemble the observed beta Pictoris gas disk, we find that the gas is primarily heated by photoelectric emission from dust grains, and primarily cooled through the CII 157.7 micron line emission. The gas can be heated to a temperature that is warmer than that of the dust and may in some cases reach temperature for thermal escape. The dominant cooling line, CII 157.7 micron, should be detectable by Herschel in these disks, while the OI 63.2 micron line will be too faint. We also study the dependence of the cooling line fluxes on a variety of disk parameters, in light of the much improved sensitivity to thermal line emission in the mid/far infrared and at sub-millimeter wavelengths provided by, in particular, Herschel, SOFIA and ALMA. These new instruments will yield much new information about dusty debris disks.
description: 18 pages, Accepted to ApJ
Tool wear prediction and monitoring in edge trimming of carbon fiber reinforced polymer using machine learning methods
Creators: name: Jin, Fan
Publisher: name: University of British Columbia
Year: 2021

description: Edge trimming is a necessary machining operation to achieve the required dimension and surface quality of carbon fiber reinforced polymer (CFRP) components. Rapid tool wear occurs during the edge trimming process owing to the high strength and abrasive nature of the carbon fibers, leading to potential surface damage. To satisfy the production efficiency and part quality requirements, prediction and monitoring of tool wear progression are essential in edge trimming of CFRP. This thesis presents the tool wear prediction and monitoring in edge trimming of unidirectional (UD) and multidirectional (MD) CFRPs using the artificial neural network (ANN) and random forest (RF) algorithms. The objective is to achieve the tool wear prediction and monitoring under various process conditions with limited training data. For edge trimming of UD CFRP, the feature parameters of the machine learning models consist of the instantaneous process parameters, such as the instantaneous radial force, fiber cutting angle, and uncut chip thickness. As a result, the training data obtained at one radial and axial depth of cut are applicable for tool wear prediction at other radial cutting depths. The experimental data shows a high correlation between the instantaneous radial force and the tool flank wear length. The proposed method achieves the tool wear length prediction within 10% error under various edge trimming conditions. The experimental data from UD CFRP is used for tool wear monitoring in edge trimming of MD CFRP. The tool wear length ratios among the tool edge portions corresponding to different UD layers of the MD CFRP are experimentally identified. The overall radial force is predicted by individual force components from each UD layer, which are influenced by the cutting speed, feed rate, tool helix angle, and wear length distribution along the tool edge. The results show that the proposed model predicts the radial force in edge trimming of MD CFRP with different layer-up sequences within 20% error including the tool wear effect. The proposed method is able to perform tool wear monitoring in edge trimming of MD CFRP based on the force prediction with the predefined maximum tool wear length.
Repulsive nature of optical potentials for high-energy heavy-ion scattering
Creators: name: Furumoto, T.
name: Sakuragi, Y.
name: Yamamoto, Y.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The recent works by the present authors predicted that the real part of heavy-ion optical potentials changes its character from attraction to repulsion around the incident energy per nucleon E/A = 200 - 300 MeV on the basis of the complex G-matrix interaction and the double-folding model (DFM) and revealed that the three-body force plays an important role there. In the present paper, we have precisely analyzed the energy dependence of the calculated DFM potentials and its relation to the elastic-scattering angular distributions in detail in the case of the $^{12}$C + $^{12}$C system in the energy range of E/A = 100 - 400 MeV. The tensor force contributes substantially to the energy dependence of the real part of the DFM potentials and plays an important role to lower the attractive-to-repulsive transition energy. The nearside and farside (N/F) decomposition of the elastic-scattering amplitudes clarifies the close relation between the attractive-to-repulsive transition of the potentials and the characteristic evolution of the calculated angular distributions with the increase of the incident energy. Based on the present analysis, we propose experimental measurements of the predicted strong diffraction phenomena of the elastic-scattering angular distribution caused by the N/F interference around the attractive-to-repulsive transition energy together with the reduced diffractions below and above the transition energy.
description: 35 pages, 13 figures, accepted for publication in Phys. Rev. C
Type Mismatch: Variabili, errori e progettazione grafica
Creators: name: Türkyilmaz, Kerem
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2018

description: La programmazione non è solo una tecnologia, e non è solo uno strumento informatico, ma può anche essere un modo di immaginare, un modo di vivere la propria creatività dal mondo delle idee che prendono forma i contenuti del mondo reale. Il mio progetto di tesi si concentra inizialmente sulle fondamentali tappe storiche che hanno portato alla nascita e all’impiego della programmazione come strumento di sviluppo e produzione e secondariamente come mezzo di espressione. In questa riflessione si inserisce il mio progetto di tesi:Type Mismatch non ha come intento quello di giungere ad un risultato assoluto e definitivo, ma vuole piuttosto dimostrare quali nuove strade e possibili strumenti esistono per realizzare artefatti di comunicazione visiva. Questo percorso vuole dunque mostrare una metodologia di progettazione alternativa a quella tradizionale e fornire ai comunicatori visivi, tramite la condivisione della ricerca e soprattutto del codice, una serie di spunti teorici e pratici.
Kerndatensatz Forschung: Entwicklungen und Strukturen
Creators: name: Biesenbender, Sophie
Publisher: name: Zenodo
Year: 2023
Subjects: KDSF-Standard
Forschungsinformationen
Forschungsberichterstattung
Kommission für Forschungsinformationen in Deutschland
KFiD
KDSF-Mappings

description: Die 2021 eingerichtete Kommission für Forschungsinformationen (KFiD) verfolgt das Ziel, den KDSF – Standard für Forschungsinformationen in Deutschland im deutschen Wissenschaftssystem zu etablieren und auf diesem Weg die Forschungsberichterstattung weiterzuentwickeln. Damit verbindet sich die Erwartung, nicht nur die Informationsverarbeitung effizienter zu gestalten, sondern auch die Nutzbarkeit von Forschungsinformationen nachhaltig zu stützen und so die Auskunftsfähigkeit in den Forschungseinrichtungen zu stärken. Der Vortrag gibt Einblicke in die Ansätze und die Struktur des KDSF und zeigt anhand eines Abgleichs mit der Hochschulpersonalstatistik beispielhaft auf, in welchem Zusammenhang der KDSF mit bestehenden Berichtslegungsverpflichtungen von Hochschulen steht.
Phase Mixing of Nonlinear Visco-resistive Alfvén Waves
Creators: name: McLaughlin, J. A.
name: De Moortel, I.
name: Hood, A. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate the behaviour of nonlinear, nonideal Alfvén wave propagation within an inhomogeneous magnetic environment. The governing MHD equations are solved in 1D and 2D using both analytical techniques and numerical simulations. We find clear evidence for the ponderomotive effect and visco-resistive heating. The ponderomotive effect generates a longitudinal component to the transverse Alfvén wave, with a frequency twice that of the driving frequency. Analytical work shows the addition of resistive heating. This leads to a substantial increase in the local temperature and thus gas pressure of the plasma, resulting in material being pushed along the magnetic field. In 2D, our system exhibits phase mixing and we observe an evolution in the location of the maximum heating, i.e. we find a drifting of the heating layer. Considering Alfvén wave propagation in 2D with an inhomogeneous density gradient, we find that the equilibrium density profile is significantly modified by both the flow of density due to visco-resistive heating and the nonlinear response to the localised heating through phase mixing.
description: 16 pages, 17 figures
Neuere Entwicklungen rund um den KDSF-Standard
Creators: name: Biesenbender, Sophie
Publisher: name: Zenodo
Year: 2023
Subjects: KDSF-Standard
Forschungsinformationssysteme
Forschungsberichterstattung
Kommission für Forschungsinformationen in Deutschland
KFiD

description: Die 2021 eingerichtete Kommission für Forschungsinformationen (KFiD) verfolgt das Ziel, den KDSF – Standard für Forschungsinformationen in Deutschland im deutschen Wissenschaftssystem zu etablieren und auf diesem Weg die Forschungsberichterstattung weiterzuentwickeln. Damit verbindet sich u.a. die Erwartung, die Informationsverarbeitung in Hochschulen und außeruniversitären Forschungseinrichtungen effizienter zu gestalten. Obwohl eine flächendeckende Einführung und Nutzung des KDSF noch aussteht, gibt es bereits stellenweise Erfahrungen und bewährte Ansätze zur Anwendung des KDSF – bspw. über das Forschungsinformationssystem HISinOne RES. Der Vortrag befasst sich mit aktuellen Entwicklungen rund um den KDSF und gibt einen Ausblick auf dessen Weiterentwicklung sowie weitere Aktivitäten der KFiD.
"From Nowhere to Somewhere" : the desires of a black transman's futurity
Creators: name: Williams, Savoy Whitney
Publisher: name: University of British Columbia
Year: 2023

description: The demand for scholarly works concerning black transmen’s experience within the fields of Transgender Studies, black feminist thought and Critical Race Studies continues to be longed for. As an immediate attendance to this longing for the concern of black trans beings, this work comes as a provisional glimpse into the complex relationships between race and gender as social categories, and as analytics concerning the figuring of being black and trans. Five works by black trans scholars presenting inquiries into the status’ of blackness, gender and being are analyzed, compared and ultimately grounded, to set my foundation for a creative method of practice for black transmen to augment their futurity towards one that is hoped for.
C Implementation & comparison of companding & silence audio compression techniques
Creators: name: Dangarwala, Kruti
name: Shah, Jigar
Publisher: name: arXiv
Year: 2010
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Just about all the newest living room audio-video electronics and PC multimedia products being designed today will incorporate some form of compressed digitized-audio processing capability. Audio compression reduces the bit rate required to represent an analog audio signal while maintaining the perceived audio quality. Discarding inaudible data reduces the storage, transmission and compute requirements of handling high-quality audio files. This paper covers wave audio file format & algorithm of silence compression method and companding method to compress and decompress wave audio file. Then it compares the result of these two methods.
description: International Journal of Computer Science Issues online at http://ijcsi.org/articles/C-Implementation-comparison-of-companding-silence-audio-compression-techniques.php
Bounds for Completely Decomposable Jacobians
Creators: name: Duursma, Iwan
name: Enjalbert, Jean-Yves
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G20, 14G10, 14G15

description: A curve over the field of two elements with completely decomposable Jacobian is shown to have at most six rational points and genus at most 26. The bounds are sharp. The previous upper bound for the genus was 145. We also show that a curve over the field of $q$ elements with more than $q^{m/2}+1$ rational points has at least one Frobenius angle in the open interval $(π/m,3π/m)$. The proofs make use of the explicit formula method.
description: 9 pages, first appeared in 2002, posted for greater accessibility, with an addendum on X(11) mod 2
Total variation superiorization schemes in proton computed tomography image reconstruction
Creators: name: Penfold, S. N.
name: Schulte, R. W.
name: Censor, Y.
name: Rosenfeld, A. B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Medical Physics (physics.med-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Purpose: Iterative projection reconstruction algorithms are currently the preferred reconstruction method in proton computed tomography (pCT). However, due to inconsistencies in the measured data arising from proton energy straggling and multiple Coulomb scattering, noise in the reconstructed image increases with successive iterations. In the current work, we investigated the use of total variation superiorization (TVS) schemes that can be applied as an algorithmic add-on to perturbation-resilient iterative projection algorithms for pCT image reconstruction. Methods: The block-iterative diagonally relaxed orthogonal projections (DROP) algorithm was used for reconstructing Geant4 Monte Carlo simulated pCT data sets. Two TVS schemes added on to DROP were investigated; the first carried out the superiorization steps once per cycle and the second once per block. Simplifications of these schemes, involving the elimination of the computationally expensive feasibility proximity checking step of the TVS framework, were also investigated. The modulation transfer function and contrast discrimination function were used to quantify spatial and density resolution, respectively. Results: With both TVS schemes, superior spatial and density resolution was achieved compared to the standard DROP algorithm. Eliminating the feasibility proximity check improved the image quality, in particular image noise, in the once-per-block superiorization, while also halving image reconstruction time. Overall, the greatest image quality was observed when carrying out the superiorization once-per-block and eliminating the feasibility proximity check. Conclusions: The low contrast imaging made possible with TVS holds a promise for its incorporation into our future pCT studies.
description: 26pp, Medical Physics, accepted for publication
Neuere Entwicklungen rund um den KDSF-Standard
Creators: name: Biesenbender, Sophie
Publisher: name: Zenodo
Year: 2023
Subjects: KDSF-Standard
Kommission für Forschungsinformationen in Deutschland
KFiD
Forschungsinformationen
Forschungsberichterstattung

description: Die 2021 eingerichtete Kommission für Forschungsinformationen (KFiD) verfolgt das Ziel, den KDSF – Standard für Forschungsinformationen in Deutschland im deutschen Wissenschaftssystem zu etablieren und auf diesem Weg die Forschungsberichterstattung weiterzuentwickeln. Damit verbindet sich die Erwartung, nicht nur die Informationsverarbeitung effizienter zu gestalten, sondern auch die Nutzbarkeit von Forschungsinformationen nachhaltig zu stützen und so die Auskunftsfähigkeit in den Forschungseinrichtungen zu stärken. Obwohl eine flächendeckende Einführung und Nutzung des KDSF noch aussteht, gibt es bereits stellenweise Erfahrungen und bewährte Ansätze zur Professionalisierung der Prozesse – bspw. über die Landesinitiative CRIS.NRW. Der Vortrag befasst sich mit aktuellen Entwicklungen rund um den KDSF und gibt einen Ausblick auf dessen Weiterentwicklung sowie weitere Aktivitäten der KFiD.
The $ρ$ meson in hot hadron matter and low mass dilepton spectra
Creators: name: Ghosh, Sabyasachi
name: Sarkar, Sourav
name: Alam, Jan-e
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The structure of the one loop self-energy graphs of the $ρ$ meson is analyzed in the real time formulation of thermal field theory. The modified spectral function of the $ρ$ meson in hot hadronic matter leads to a large enhancement of lepton pair production below the bare peak of the $ρ$. It has been shown that the effective temperature extracted from the inverse slope of the transverse momentum distributions for various invariant mass ($M$) windows of the pair can be used as an efficient tool to characterize different phases of the evolving matter.
description: Presented at the 6th International Conference on the Physics and Astrophysics of Quark Gluon Plasma, ICPAQGP2010, Dec. 6-10, Goa, India
title: Ð¡Ñ ÐµÐ¼Ñ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»ÐµÐ¹ ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² Ð±Ð¸Ð¾Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ñ ÑÑÑÑÐ¾Ð¹ÑÑÐ²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Amplifier circuits for biomedical sensors
Creators: name: Ð§Ð¶Ð°Ð½ ÐÐ°ÑÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÑÑÐ°Ð½ÑÐ¸Ð¼Ð¿ÐµÐ´Ð°Ð½ÑÐ½ÑÐ¹ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ
ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½Ñ ÑÑÐ¸Ð»ÐµÐ½Ð¸Ñ
Ð²Ñ Ð¾Ð´Ð½Ð¾Ð¹ ÑÑÐ¼
Ð³Ð°ÑÐ¼Ð¾Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¸ÑÐºÐ°Ð¶ÐµÐ½Ð¸Ñ
ÑÐ°ÑÑÐ¾ÑÐ½Ð°Ñ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ°
transimpedance amplifier
gain
input noise
harmonic distortion
frequency response

description: ÐÐ±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ â ÑÑÐµÐ¼Ñ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»ÐµÐ¹ ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² Ð±Ð¸Ð¾Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ñ ÑÑÑÑÐ¾Ð¹ÑÑÐ². Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ â ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÑÐµÐ¼Ñ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð´Ð°ÑÑÐ¸ÐºÐ° Ð±Ð¸Ð¾Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°. ÐÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ ÑÑÐµÐ¼ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÑÑÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸, Ð² ÑÐ°ÑÑÐ½Ð¾ÑÑÐ¸, ÑÐ¾ÑÐ¼Ð° ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð²Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸, ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½Ñ ÑÑÐ¸Ð»ÐµÐ½Ð¸Ñ, Ð³Ð°ÑÐ¼Ð¾Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¸ÑÐºÐ°Ð¶ÐµÐ½Ð¸Ñ Ð¸ ÑÑÐ¼Ñ. Ð­ÑÐ¸ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°ÑÑÑÑ Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ð¼Ð¸ Ð¸Ð·Ð²ÐµÑÑÐ½ÑÑ ÑÐ°Ð±Ð¾Ñ.
description: The subject of the graduate qualification work is amplifier circuits for sensors of biomedical devices. The given work is devoted to development of a biomedical device sensor signal amplifier circuit. The amplifier has been worked out. The main characteristics are simulated, in particular, the waveform in the time domain, gain, harmonic distortion and noise. These characteristics are compared with the results of known papers.
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 7/2019
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: 080

description: Ordnung zur Änderung der Prüfungsordnung für den Bachelorstudiengang Wissenschaftsjournalismus der Fakultät Kulturwissenschaften an der Technischen Universität Dortmund vom 22. März 2019
description: Beschaffungsrichtlinie für die Beschaffung von Liefer- und Dienstleistungen an der Technischen Universität Dortmund
description: Geschäftsordnung des Studierendenparlaments der Technischen Universität Dortmund
description: Amtliche Mitteilungen der Technischen Universität Dortmund;2019,7
Color Image Compression Based On Wavelet Packet Best Tree
Creators: name: Kharate, G. K.
name: Patil, V. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In Image Compression, the researchers' aim is to reduce the number of bits required to represent an image by removing the spatial and spectral redundancies. Recently discrete wavelet transform and wavelet packet has emerged as popular techniques for image compression. The wavelet transform is one of the major processing components of image compression. The result of the compression changes as per the basis and tap of the wavelet used. It is proposed that proper selection of mother wavelet on the basis of nature of images, improve the quality as well as compression ratio remarkably. We suggest the novel technique, which is based on wavelet packet best tree based on Threshold Entropy with enhanced run-length encoding. This method reduces the time complexity of wavelet packets decomposition as complete tree is not decomposed. Our algorithm selects the sub-bands, which include significant information based on threshold entropy. The enhanced run length encoding technique is suggested provides better results than RLE. The result when compared with JPEG-2000 proves to be better.
description: International Journal of Computer Science Issues online at http://ijcsi.org/articles/Color-Image-Compression-Based-On-Wavelet-Packet-Best-Tree.php
Does temperature favor quantum coherence of a dissipative two-level system?
Creators: name: Lü, Zhiguo
name: Zheng, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The quantum dynamics of a two-level system coupled to an Ohmic spin- bath is studied by means of the perturbation approach based on a unitary transformation. A scattering function $ξ_k$ is introduced in the transformation to take into account quantum fluctuations. By the master equation within the Born approximation, nonequilibrium dynamics quantities are calculated. The method works well for the coupling constant $0 < α< α_c$ and a finite bare tunneling $Δ$. It is found that (i) only at zero temperature with small coupling or moderate one does the spin-spin-bath model display identical behavior as the well known spin-boson-bath model; (ii) in comparison with the known results of spin-boson-bath model, the coherence-incoherence transition point, which occurs at $α_c={1/2}[1+ηΔ/ω_c]$, is temperature independent; (iii) the nonequilibrium correlation function $P(t)=$, evolves without temperature dependence while $$ depends on temperature. Both $P(t)$ and $$ not only satisfy their initial conditions, respectively, and also have correct long time limits. Besides, the Shiba's relation and sum rule are exactly satisfied in the coherent regime for this method. Our results show that increasing temperature does not help the system suppress decoherence in the coherent regime, i.e., finite temperature does not favor the coherent dynamics in this regime. Thus, the finite-temperature dynamics induced by two kinds of baths spin-bath and boson-bath exhibit distinctly different physics.
description: 21 pages 4 figures
Il benessere a scuola: un percorso di rilassamento alla Scuola dell’infanzia
Creators: name: Paiva, Vanessa
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2017

description: La sperimentazione si svolge in una sezione di Scuola dell’Infanzia di Tesserete. Lo scopo principale del percorso è di ridurre nel bambino le proprie tensioni, permettendo così di trovare uno stato di calma e di serenità. Per fare ciò vengono proposti alcuni esercizi di rilassamento, l’obiettivo è di capire se questi influiscono positivamente sul benessere del singolo bambino. In relazione al contesto di riferimento sono stati scelti complessivamente cinque tipi di esercizi: rilassamento passivo, rilassamento attivo, yoga e visualizzazione mentale, esercizi di respirazione e infine esperienze sensoriali. Dai dati raccolti attraverso strumenti di osservazione strutturati come le interviste e le griglie osservative, si possono evidenziare notevoli evoluzioni. Analizzando a fondo tutti gli elementi è emerso che il bambino, praticando per un certo periodo di tempo esercizi di rilassamento, vive momenti di distensione e soprattutto di piacere. La tensione del corpo trasformata in movimento e in uno stato d’animo soddisfacente, porta ad un miglioramento del proprio benessere emotivo, fisico e psicologico. Il progetto pedagogico didattico ha permesso dunque di portare ognuno alla calma, all’armonia interiore e alla scoperta di sensazioni piacevoli. I bisogni fondamentali sono stati soddisfatti e il modo di agire e reagire in relazione agli altri e con l’ambiente è diventato più rispettoso.
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ¸ÑÑÐµÐ¼Ñ Ð¾ÑÑÐ»ÐµÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð·Ð³Ð»ÑÐ´Ð° Ð½Ð° ÑÐºÑÐ°Ð½ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÐºÐ°Ð¼ÐµÑÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of a camera based gaze tracking system
Creators: name: ÐÑÑÐ¾Ð¼Ð¸Ð½, ÐÐ½ÑÐ¾Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½Ð¾Ðµ Ð·ÑÐµÐ½Ð¸Ðµ
ÑÑÐµÐºÐ¸Ð½Ð³ Ð³Ð»Ð°Ð·
Ð¼Ð°ÑÐ¸Ð½Ð½Ð¾Ðµ Ð¾Ð±ÑÑÐµÐ½Ð¸Ðµ
qt
opencv
computer vision
gaze tracking
machine learning

description: Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð´Ð¸Ð¿Ð»Ð¾Ð¼Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° ÑÐ¸ÑÑÐµÐ¼Ð° Ð´Ð»Ñ
Ð¾ÑÑÐ»ÐµÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð·Ð³Ð»ÑÐ´Ð° Ð½Ð° ÑÐºÑÐ°Ð½ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÐºÐ°Ð¼ÐµÑÑ c
Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ OpenCV Ð¸ QT. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÐµÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿ÑÐµÐ´Ð¼ÐµÑÐ½Ð¾Ð¹
Ð¾Ð±Ð»Ð°ÑÑÐ¸, Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ Ð¾Ð±ÑÐµÐµ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ Ð·Ð°Ð´Ð°ÑÐ¸ Ð¸ Ð¾Ð±Ð·Ð¾Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹
Ð´Ð»Ñ Ð¿Ð¾Ð¸ÑÐºÐ° Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð·Ð³Ð»ÑÐ´Ð°. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÑÑÑÑ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÐµ
Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ñ, ÑÐ¸Ð»ÑÑÑÑ Ð¸ ÑÐ°Ð³Ð¸ Ð² ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ´ÑÑÐµÐ¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¾ÑÑÐ»ÐµÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ. Ð
ÑÑÐµÑÑÐµÐ¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÑÑÑÑ Ð²ÑÐ±ÑÐ°Ð½Ð½ÑÐµ ÑÑÐµÐ´ÑÑÐ²Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸, ÑÐµÐ¶Ð¸Ð¼Ñ ÑÐ°Ð±Ð¾ÑÑ
ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ, Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸. Ð ÑÐµÑÐ²ÑÑÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ
Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸
ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ.
description: In this thesis, the gaze tracking system with camera was created using
OpenCV and QT. The first chapter describes the analysis of the subject area, provides
a general description of the problem and a comparison of existing solutions for gaze
tracking. The second chapter describes the analysis of required algorithms, filters and
steps in work of future tracking system. The third chapter describes chosen
development tools, work modes of the developed system, implementation details. The
fourth chapter describes the testing and performance analysis of the developed
system.
A Pedagogical Evaluation and Discussion about the Lack of Cohesion in Method (LCOM) Metric Using Field Experiment
Creators: name: Okike, Ezekiel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Chidamber and Kemerer first defined a cohesion measure for object-oriented software - the Lack of Cohesion in Methods (LCOM) metric. This paper presents a pedagogic evaluation and discussion about the LCOM metric using field data from three industrial systems. System 1 has 34 classes, System 2 has 383 classes and System 3 has 1055 classes. The main objectives of the study were to determine if the LCOM metric was appropriate in the measurement of class cohesion and the determination of properly and improperly designed classes in the studied systems. Chidamber and Kemerer's suite of metric was used as metric tool. Descriptive statistics was used to analyze results. The result of the study showed that in System 1, 78.8% (26 classes) were cohesive; System 2 54% (207 classes) were cohesive; System 3 30% (317 classes) were cohesive. We suggest that the LCOM metric measures class cohesiveness and was appropriate in the determination of properly and improperly designed classes in the studied system.
description: International Journal of Computer Science Issues online at http://ijcsi.org/articles/A-Pedagogical-Evaluation-and-Discussion-about-the-Lack-of-Cohesion-in-Method-LCOM-Metric-Using-Field-Experiment.php
Verfahren zur Prädiktion des Rollwiderstands bei variablen Betriebsparametern auf Basis standardisierter Rollwiderstandsmessungen
Creators: name: Greiner, Matthias
Publisher: name: KIT Scientific Publishing
Year: 2019
Subjects: Rollwiderstand
Reifenmodell
Fahrzyklus
rolling resistance
tire model
driving cycle

description: Als Beitrag zum Umweltschutz wurde das EU-Reifenlabel eingeführt. Doch kann vom besten Labelwert nicht auf den Reifen mit dem niedrigsten Rollwiderstand im realen Betrieb geschlossen werden. Ziel dieser Arbeit ist es, ein Rollwiderstandsmodell für PKW-Reifen zu entwickeln, das mittels einfacher Rollwiderstandsmessungen bedatet werden kann. Hierzu wird der Reifen durch ein einfaches physikalisches Modell beschrieben, das den Zusammenhang zwischen Reifentemperatur und Rollwiderstand modelliert.
The Importance of Artistic Media in Supporting Sick Child « Theater Activation as a Model »
Creators: name: Science Step Journal
Publisher: name: Zenodo
Year: 2025
Subjects: subject: FINE ARTS
subject: Art
subject: Educational sciences
subject: FOS: Educational sciences
subject: Abortion, Therapeutic/education

description: Artistic media have long been a source of entertainment, but their role has expanded over time, particularly in the healthcare field. As the positive impact of these media on patients became more evident, many doctors began incorporating them into treatment plans. This study focuses on whether theatrical activation techniques can be used to support sick children, helping them better understand their health condition and engage positively with their treatment. The research combines a theoretical look at theatrical activation and the real-life experiences of sick children, alongside practical examples of theatrical activation programs used in hospitals. It explores previous studies, describes how these sessions were integrated into treatment plans, and assesses the effect on the treatment process. The findings reveal that theatrical activation offers children psychological comfort during their hospital stays, fosters better relationships, and enhances the overall effectiveness of their medical treatment. The study also stresses the importance of specialized training in theatrical activation to ensure its full potential is realized. A child’s natural inclination toward play is a key factor in encouraging them to accept their treatment. Based on these findings, the research recommends establishing training programs in theatrical activation for sick children at universities and institutions. It also calls for greater awareness of this approach in hospitals across the Arab world, encouraging healthcare professionals to adopt artistic media as part of the therapeutic process. This could significantly improve treatment outcomes and help empower children during their healing journey.
Approximating a geometric fractional Brownian motion and related processes via discrete Wick calculus
Creators: name: Bender, Christian
name: Parczewski, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We approximate the solution of some linear systems of SDEs driven by a fractional Brownian motion $B^H$ with Hurst parameter $H\in(\frac{1}{2},1)$ in the Wick--Itô sense, including a geometric fractional Brownian motion. To this end, we apply a Donsker-type approximation of the fractional Brownian motion by disturbed binary random walks due to Sottinen. Moreover, we replace the rather complicated Wick products by their discrete counterpart, acting on the binary variables, in the corresponding systems of Wick difference equations. As the solutions of the SDEs admit series representations in terms of Wick powers, a key to the proof of our Euler scheme is an approximation of the Hermite recursion formula for the Wick powers of $B^H$.
description: Published in at http://dx.doi.org/10.3150/09-BEJ223 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
L’esthétique du raisonnement de Lancelot (The aesthetics of Lancelot’s reasoning)
Creators: name: Ma, Shiyuan
Publisher: name: University of British Columbia
Year: 2021

description: Dans Le Chevalier de la Charrette de Chrétien de Troyes et La Mort Artu anonyme, l’analyse du raisonnement de Lancelot à travers son discours a prouvé qu’il y a une cohérence dans la manière dont il est esquissé et, de surcroît, une progression cohérente dans le développement de son intellection. De l’analyse du monologue dans Le Chevalier de la Charrette, au dialogue dans ce même livre et La Mort Artu, le raisonnement de Lancelot ne sort pas de l’orbite de la claritas et tourne autour de la forme cyclique ; il devient de plus en plus synthétique et englobant à cause de la complication accumulée à travers les événements. Ce caractère synthétique se développe jusqu’à pouvoir bouleverser l’univers du raisonnement d’Arthur et devenir comparable au raisonnement exemplaire du chef du royaume.
Non-Markovian dynamical effects and time evolution of entanglement entropy of a dissipative two-state system
Creators: name: Lü, Zhiguo
name: Zheng, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the dynamical information exchange between a two-state system and its environment which is measured by von Neumann entropy. It is found that in the underdamping regime, the entropy dynamics exhibits an extremely non-Markovian oscillation-hump feature, in which oscillations manifest quantum coherence and a hump of envelop demonstrates temporal memory of bath. It indicates that the process of entropy exchange is bidirectional. When the coupling strength increases a certain threshold, the hump along with ripple disappears, which is indicative of the coherent-incoherent dynamical crossover. The long-time limit of entropy evolution reaches the ground state value which agrees with that of numerical renormalization group.
description: 11 pages and 3 figures
Image Reconstruction with Analytical Point Spread Functions
Creators: name: Ramos, A. Asensio
name: Ariste, A. Lopez
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The image degradation produced by atmospheric turbulence and optical aberrations is usually alleviated using post-facto image reconstruction techniques, even when observing with adaptive optics systems. These techniques rely on the development of the wavefront using Zernike functions and the non-linear optimization of a certain metric. The resulting optimization procedure is computationally heavy. Our aim is to alleviate this computationally burden. To this aim, we generalize the recently developed extended Zernike-Nijboer theory to carry out the analytical integration of the Fresnel integral and present a natural basis set for the development of the point spread function in case the wavefront is described using Zernike functions. We present a linear expansion of the point spread function in terms of analytic functions which, additionally, takes defocusing into account in a natural way. This expansion is used to develop a very fast phase-diversity reconstruction technique which is demonstrated through some applications. This suggest that the linear expansion of the point spread function can be applied to accelerate other reconstruction techniques in use presently and based on blind deconvolution.
description: 10 pages, 4 figures, accepted for publication in Astronomy & Astrophysics
Numerical Evaluation of Tensor Feynman Integrals in Euclidean Kinematics
Creators: name: Gluza, Janusz
name: Kajda, Krzysztof
name: Riemann, Tord
name: Yundin, Valery
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For the investigation of higher order Feynman integrals, potentially with tensor structure, it is highly desirable to have numerical methods and automated tools for dedicated, but sufficiently 'simple' numerical approaches. We elaborate two algorithms for this purpose which may be applied in the Euclidean kinematical region and in d=4-2*epsilon dimensions. One method uses Mellin-Barnes representations for the Feynman parameter representation of multi-loop Feynman integrals with arbitrary tensor rank. Our Mathematica package AMBRE has been extended for that purpose, and together with the packages MB (M. Czakon) or MBresolve (A. V. Smirnov and V. A. Smirnov) one may perform automatically a numerical evaluation of planar tensor Feynman integrals. Alternatively, one may apply sector decomposition to planar and non-planar multi-loop epsilon-expanded Feynman integrals with arbitrary tensor rank. We automatized the preparations of Feynman integrals for an immediate application of the package sector_decomposition (C. Bogner and S. Weinzierl) so that one has to give only a proper definition of propagators and numerators. The efficiency of the two implementations, based on Mellin-Barnes representations and sector decompositions, is compared. The computational packages are publicly available.
description: 22 pages
Effects of polymer additives on Rayleigh-Taylor turbulence
Creators: name: Boffetta, G.
name: Mazzino, A.
name: Musacchio, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The role of polymers additives on the turbulent convective flow of a Rayleigh--Taylor system is investigated by means of direct numerical simulations (DNS) of Oldroyd-B viscoelastic model. The dynamics of polymers elongation follow adiabatically the self-similar evolution of the turbulent mixing layer, and shows the appearance of a strong feedback on the flow which originate a cut off for polymer elongations. The viscoelastic effects on the mixing properties of the flow are twofold. Mixing is appreciably enhanced at large scales (the mixing layer growth-rate is larger than that of the purely Newtonian case) and depleted at small scales (thermal plumes are more coherent with respect to the Newtonian case). The observed speed up of the thermal plumes, together with an increase of the correlations between temperature field and vertical velocity, contributes to a significant {\it enhancement of heat transport}. Our findings are consistent with a scenario of {\it drag reduction} between falling and rising plumes induced by polymers, and provide further evidence of the occurrence of drag reduction in absence of boundary layers. A weakly non-linear model proposed by Fermi for the growth of the mixing layer is reported in the Appendix.
description: 19 pages, 12 figures
Plane curves with prescribed triple points: a toric approach
Creators: name: Dumitrescu, Olivia
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We will use toric degenerations of the projective plane ${\mathbb{P}^ 2}$ to give a new proof of the triple points interpolation problems in the projective plane. We also give a complete list of toric surfaces that are useful as components in this degeneration.
Variable selection using a smooth information criterion for distributional regression models
Creators: name: O'Neill, Meadhbh
name: Burke, Kevin
Publisher: name: University of Limerick
Year: 2023
Subjects: Mathematical sciences

description: Modern variable selection procedures make use of penalization methods to execute simultaneous model selection and estimation. A popular method is the least absolute shrinkage and selection operator, the use of which requires selecting the value of a tuning parameter. This parameter is typically tuned by minimizing the cross-validation error or Bayesian information criterion, but this can be computationally intensive as it involves fitting an array of different models and selecting the best one. In contrast with this standard approach, we have developed a procedure based on the so-called “smooth IC” (SIC) in which the tuning parameter is automatically selected in one step. We also extend this model selection procedure to the distributional regression framework, which is more flexible than classical regression modelling. Distributional regression, also known as multiparameter regression, introduces flexibility by taking account of the effect of covariates through multiple distributional parameters simultaneously, e.g., mean and variance. These models are useful in the context of normal linear regression when the process under study exhibits heteroscedastic behaviour. Reformulating the distributional regression estimation problem in terms of penalized likelihood enables us to take advantage of the close relationship between model selection criteria and penalization. Utilizing the SIC is computationally advantageous, as it obviates the issue of having to choose multiple tuning parameters
GRB 081029: Understanding Multiple Afterglow Components
Creators: name: Holland, S. T.
name: De Pasquale, M.
name: Mao, J.
name: Sakamoto, T.
name: Schady, P.
name: Covino, S.
name: D'Avanzo, P.
name: Antonelli, A.
name: D'Elia, V.
name: Chincarini, G.
name: Fiore, F.
name: Pandey, S. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present an analysis of the unusual optical light curve of the gamma-ray burst GRB~081029, which occurred at a redshift of z = 3.8479$. We combine X-ray and optical observations from the Swift X-Ray Telescope and the Swift UltraViolet/Optical Telescope with optical and infrared data obtained using the REM and ROTSE telescopes to construct a detailed data set extending from 86 s to approximately 100,000 s after the BAT trigger. Our data also cover a wide energy range, from 10 keV to 0.77 eV (1.24 Angstrom to 16,000 Angstrom). The X-ray afterglow shows a shallow initial decay followed by a rapid decay starting at about 18,000s. The optical and infrared afterglow, however, shows an uncharacteristic rise at about 5000 s that does not correspond to any feature in the X-ray light curve. Our data are not consistent with synchrotron radiation from a single-component jet interacting with an external medium. We do, however, find that the observed light curve can be explained using multi-component model for the jet.
description: 4 pages, 3 figures, to appear in the AIP Conference Proceedings for the Gamma-Ray Burst 2010 Conference, Annapolis, MD, USA, November 2010