cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Big-Data-Handling bei nicht-invasiver hochpräziser Beschleunigungssensor-Herzfunktionsdiagnostik
Creators: name: Wolf, Marie Cathrine
name: Jähne-Raden, Nico
name: Kulau, Ulf
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Bei der Ballistokardiographie (BCG) handelt es sich um die Messung von Bewegungen des Körpers, die durch die Bewegungen des Herzens im kardialen Zyklus ausgelöst werden und den Körper in Bewegung versetzen [ref:1]. Da durch die Untersuchungen der BCG die mechanische[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
title: Big Data in health promotion and prevention of vulnerable groups – A Delphi survey
Creators: name: Spranger, Julia
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: big data
subject: vulnerable groups
subject: health promotion
subject: 610 Medical sciences; Medicine

description: Is Big Data an instrument to promote or maintain the health of specific target groups? Experts have answered this question. The results of the online expert survey are the subject of this talk. There are great expectations associated with Big Data. The use of large and diverse amounts[for full text, please go to the a.m. URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
Radiative Transfer Limits of Two-Frequency Wigner Distribution for Random Parabolic Waves
Creators: name: Fannjiang, Albert
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The present note establishes the self-averaging, radiative transfer limit for the two-frequency Wigner distribution for classical waves in random media. Depending on the ratio of the wavelength to the correlation length the limiting equation is either a Boltzmann-like integral equation or a Fokker-Planck-like differential equation in the phase space. The limiting equation is used to estimate three physical parameters: the spatial spread, the coherence length and the coherence bandwidth. In the longitudinal case, the Fokker-Planck-like equation can be solved exactly.
description: typos corrected
Particle Acceleration in Supernova Remnants and the Production of Thermal and Nonthermal Radiation
Creators: name: Ellison, Donald C.
name: Patnaude, Daniel J.
name: Slane, Patrick
name: Blasi, Pasquale
name: Gabici, Stefano
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If highly efficient, cosmic ray production can have a significant effect on the X-ray emission from SNRs as well as their dynamical evolution. Using hydrodynamical simulations including diffusive shock acceleration, we produce spectra for both the thermal and nonthermal forward shock emission. For a given ambient density and explosion energy, we find that the position of the forward shock at a given age is a strong function of the acceleration efficiency, providing a signature of cosmic-ray production. Using an approximate treatment for the ionization state of the plasma, we investigate the effects of slow vs. rapid heating of the postshock electrons on the ratio of thermal to nonthermal X-ray emission at the forward shock. We also investigate the effects of magnetic field strength on the observed spectrum for efficient cosmic-ray acceleration. The primary effect of a large field is a considerable flattening of the nonthermal spectrum in the soft X-ray band. Spectral index measurements from X-ray observations may thus be indicators of the postshock magnetic field strength. The predicted gamma-ray flux from inverse-Compton (IC) scattering and neutral pion decay is strongly affected by the ambient conditions and, for the particular parameters used in our examples, the IC emission at E ~ 1 TeV exceeds that from pion decay, although at both lower and higher energies this trend is reversed for cases of high ambient density. More importantly, high magnetic fields produce a steepening of the electron spectrum over a wide energy range which may make it more difficult to differentiate between IC and pion-decay emission solely by spectral shape.
description: 30 pages, 12 figures, submitted to ApJ January 2007
Η θέση του επενδυτή στη σύμβαση παραγγελίας για την παροχή επενδυτικών υπηρεσιών:
Creators: name: Αντωνιάδης, Γεώργιος Βύρωνα
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Ε.Π.Ε.Υ.
επενδυτής
παραγγελία
investment firms
investor
order

description: Σκοπός της διπλωματικής εργασίας ήταν η μελέτη της νομικής θέσης του επενδυτή στη σύμβαση παραγγελίας παροχής επενδυτικών υπηρεσιών, ήτοι στη σύμβαση που καταρτίζεται μεταξύ εταιρίας παροχής επενδυτικών υπηρεσιών, η οποία είναι μέλος οργανωμένης αγοράς (παραγγελιοδόχος), και ενός υποψήφιου πελάτη-επενδυτή (παραγγελέας), με αντικείμενο την παροχή μίας επενδυτικής υπηρεσίας. Αφού παρουσιάσαμε κάποια βασικά στοιχεία σχετικά με τη λειτουργία των οργανωμένων αγορών και την παροχή επενδυτικών υπηρεσιών εν γένει, ασχοληθήκαμε ειδικότερα με τη λειτουργία της σύμβασης παραγγελίας παροχής επενδυτικών υπηρεσιών με ιδιαίτερη αναφορά και ανάλυση στις υποχρεώσεις και την ευθύνη των μερών. Το μεγαλύτερο βάρος δόθηκε στη θέση του επενδυτή, τις υποχρεώσεις που υπέχει αλλά και τα δικαιώματα που του δίνει ο νόμος και την έννομη προστασία που δικαιούται έναντι των εταιριών παροχής επενδυτικών υπηρεσιών.
description: The aim of this thesis was to investigate the legal status of the investor in order contract to provide investment services, namely in the contract drawn up between investment firms, which is a member of an organized market (freight forwarders), and a prospective client-investor (Order) for the provision of an investment service. After presenting some basic information on the operation of regulated markets and investment services in general, dealt specifically with the operation of the contract order to provide investment services with special reporting and analysis on responsibilities and liabilities of the parties. The major focus has been on of the investor, the obligations and rights that gives the law and the legal protection of the right against investment firms.
A topological interpretation of the color charge
Creators: name: Minguzzi, E.
name: Prieto, C. Tejero
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop a theory on a topologically non-trivial manifold which leads to different vacuum backgrounds at the field level. The different colors of the same quark flavor live in different backgrounds generated by the action of the torsion subgroup of H^2(M,2πZ) on H^2(M,2πZ) itself. This topological separation leads to a quark confinement mechanism which does not apply to the baryons as they turn out to live on the same vacuum state. The theory makes some topological assumptions on the spacetime manifold which are compared with the available data on the topology of the Universe.
description: Revtex4, 5 pages
Mask Guided Attention For Fine-Grained Patchy Image Classification
Creators: name: Wang, Jun
name: Yu, Xiaohan
name: Gao, Yongsheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4

description: In this work, we present a novel mask guided attention (MGA) method for fine-grained patchy image classification. The key challenge of fine-grained patchy image classification lies in two folds, ultra-fine-grained inter-category variances among objects and very few data available for training. This motivates us to consider employing more useful supervision signal to train a discriminative model within limited training samples. Specifically, the proposed MGA integrates a pre-trained semantic segmentation model that produces auxiliary supervision signal, i.e., patchy attention mask, enabling a discriminative representation learning. The patchy attention mask drives the classifier to filter out the insignificant parts of images (e.g., common features between different categories), which enhances the robustness of MGA for the fine-grained patchy image classification. We verify the effectiveness of our method on three publicly available patchy image datasets. Experimental results demonstrate that our MGA method achieves superior performance on three datasets compared with the state-of-the-art methods. In addition, our ablation study shows that MGA improves the accuracy by 2.25% and 2% on the SoyCultivarVein and BtfPIS datasets, indicating its practicality towards solving the fine-grained patchy image classification.
description: Accepted to ICIP2021
title: Big data research potential and methods in health promotion and prevention
Creators: name: Hocke-Bolte, Zora
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: big data
subject: digital epidemiology
subject: data mining
subject: 610 Medical sciences; Medicine

description: Background: “Big Data” is a collective term for various digital techniques that are “big” in several aspects, including large quantities of data, processing speed and different types of data. In health promotion and prevention are various possibilities for Big Data projects.[for full text, please go to the a.m. URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
Reciprocity of gauge operators in N=4 SYM
Creators: name: Beccaria, Matteo
name: Forini, Valentina
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A recently discovered generalized Gribov-Lipatov reciprocity holds for the anomalous dimensions of various twist operators in N=4 SYM. Here, we consider a class of scaling psu(2,2|4) operators that reduce at one-loop to twist-3 maximal helicity gluonic operators. We extract from the asymptotic long-range Bethe Ansatz a closed expression for the spin dependent anomalous dimension at four loop order and provide a complete proof of reciprocity. We comment about the interplay with possible, yet unknown, wrapping corrections.
description: Latex, JHEP style, 36 pages, v2: references added
Wither the sliding Luttinger liquid phase in the planar pyrochlore
Creators: name: Arlego, Marcelo
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using series expansion based on the flow equation method we study the zero temperature properties of the spin-1/2 planar pyrochlore antiferromagnet in the limit of strong diagonal coupling. Starting from the limit of decoupled crossed dimers we analyze the evolution of the ground state energy and the elementary triplet excitations in terms of two coupling constants describing the inter dimer exchange. In the limit of weakly coupled spin-1/2 chains we find that the fully frustrated inter chain coupling is critical, forcing a dimer phase which adiabatically connects to the state of isolated dimers. This result is consistent with findings by O. Starykh, A. Furusaki and L. Balents (Phys. Rev. B 72, 094416 (2005)) which is inconsistent with a two-dimensional sliding Luttinger liquid phase at finite inter chain coupling.
description: 6 pages, 4 Postscript figures, 1 table
Symmetry-Aware Reservoir Computing
Creators: name: Barbosa, Wendson A. S.
name: Griffith, Aaron
name: Rowlands, Graham E.
name: Govia, Luke C. G.
name: Ribeill, Guilhem J.
name: Nguyen, Minh-Hai
name: Ohki, Thomas A.
name: Gauthier, Daniel J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We demonstrate that matching the symmetry properties of a reservoir computer (RC) to the data being processed dramatically increases its processing power. We apply our method to the parity task, a challenging benchmark problem that highlights inversion and permutation symmetries, and to a chaotic system inference task that presents an inversion symmetry rule. For the parity task, our symmetry-aware RC obtains zero error using an exponentially reduced neural network and training data, greatly speeding up the time to result and outperforming hand crafted artificial neural networks. When both symmetries are respected, we find that the network size $N$ necessary to obtain zero error for 50 different RC instances scales linearly with the parity-order $n$. Moreover, some symmetry-aware RC instances perform a zero error classification with only $N=1$ for $n\leq7$. Furthermore, we show that a symmetry-aware RC only needs a training data set with size on the order of $(n+n/2)$ to obtain such performance, an exponential reduction in comparison to a regular RC which requires a training data set with size on the order of $n2^n$ to contain all $2^n$ possible $n-$bit-long sequences. For the inference task, we show that a symmetry-aware RC presents a normalized root-mean-square error three orders-of-magnitude smaller than regular RCs. For both tasks, our RC approach respects the symmetries by adjusting only the input and the output layers, and not by problem-based modifications to the neural network. We anticipate that generalizations of our procedure can be applied in information processing for problems with known symmetries.
description: 10 pages, 7 Figures
title: Korrelationen und partielle Korrelationen zwischen Multimorbidität, Polypharmazie und Alter in der Vertragsärztlichen Versorgung unter Verwendung Jacobischer Elliptischer Funktionen
Creators: name: Schuster, Reinhard
name: Emcke, Timo
name: Ostermann, Thomas
name: Schuster, Martin
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: Vertragsärztliche Versorgung
subject: Jacobische Elliptische Funktionen
subject: Multimorbidität und Polypharmazie
subject: Korrelationen und partielle Korrelationen
subject: 610 Medical sciences; Medicine

description: Leitlinien sind in der Regel auf eine Erkrankung ausgerichtet. Gerade ältere Patienten sind häufig multimorbid und in der medikamentösen Therapie liegt bei ihnen häufig Polypharmazie vor. Entscheidungen bezüglich der Risiken der Behandlung und Risiken der Nebenwirkungen sind[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
Enhancement of protein flocculant properties through carboxyl group methylation and the relationship with protein structural changes
Creators: name: Garcia, Rafael A.
name: Qi, Phoebe X.
name: Essandoh, Matthew
name: Bumanlag, Lorelie P.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Some proteins will function as flocculants to clear water of suspended particles. Prior work has shown that covalent methylation of a protein’s carboxyl groups can enhance that protein’s flocculant activity; this effect is usually attributed to the reduction in negative charges on the protein. We present results generated using four proteins which show that much of the flocculant activity enhancement occurs in a very short time at the beginning of the methylation reaction, before most of the carboxyl groups have been methylated. A variety of techniques are used to show that the methylation reaction has unintended effects on protein structure and aggregation, and that these effects may play an important role in enhancing protein flocculant activity. The observed enhancement in flocculant activity results from both charge and structural modification.
Directed mutagenesis and gene fusion analysis of the Rhodobacter capsulatus puc operon
Creators: name: LeBlanc, Heidi
Publisher: name: University of British Columbia
Year: 2009

description: The puc operon of Rhodobacter capsulatus encodes the genes for the pigment binding peptides of the light harvesting (LH) II complex, pucB and pucA, followed by three open reading frames named pucC, pucD and pucE. RNA blot analysis and promoter mapping experiments using translational fusions of lac’Z to the distal gene, pucE, showed that all five genes are primarily transcribed from a promoter upstream of pucB. The primary transcript from this promoter is of low abundance and is processed to give a 1.0 kb transcript containing pucDE sequences. A minor promoter was detected between the 3’ end of pucC and the middle of pucD; a 0.5 kb RNA molecule detected by hybridisation probes to the pucDE region could be the transcription product of this minor promoter. The most abundant transcript detected was the previously characterised 0.55 kb pucBA mRNA. Strain ΔLHII, which lacked the LHII complex, was created by replacement of the five chromosomal puc genes with the spectinomycin cartridge. This strain was complemented by plasmids carrying deletions of the pucCDE genes. The pucC gene was required for the presence of the LHII complex, and deletion of the pucE gene, which encodes ƴthe subunit of the LHII complex, led to a reduced level of the complex. Deletion of the pucD gene had no discernable effect on LHII complex levels. Photosynthetic growth of strain ALHII was similar to that of wild type cells at light levels greater than 30 µE m-2.s-1, but strains containing deletions of pucC or pucE were significantly impaired for photosynthetic growth at all light levels tested. In the case of pucC-deleted cells, chromosomal suppressor mutations frequently arose that restored the LHII complex and/or photosynthetic growth ability. A model for the trans-membrane topology of the PucC protein was derived by theoretical analyses and tested using the genetic system of alkaline phosphatase fusions. The model predicts 12 transmembrane domains, with both the N and C termini on the cytoplasmic side of the membrane. The fusions were also used for a deletion analysis of pucC. None of the truncated alleles allowed the cells to synthesize the LHII complex, but several had unexpected pleiotropic effects on LHI and RC complex levels.
Two-component Analogue of Two-dimensional Long Wave-Short Wave Resonance Interaction Equations: A Derivation and Solutions
Creators: name: Ohta, Yasuhiro
name: Maruno, Ken-ichi
name: Oikawa, Masayuki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The two-component analogue of two-dimensional long wave-short wave resonance interaction equations is derived in a physical setting. Wronskian solutions of the integrable two-component analogue of two-dimensional long wave-short wave resonance interaction equations are presented.
description: 16 pages, 9 figures, revised version; The pdf file including all figures: http://www.math.utpa.edu/kmaruno/yajima.pdf
Fiber-pigtailing quantum-dot cavity-enhanced light emitting diodes
Creators: name: Rickert, Lucas
name: Schröder, Frederik
name: Gao, Timm
name: Schneider, Christian
name: Höfling, S.
name: Heindel, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report on a process for the fiber-coupling of electrically driven cavity-enhanced quantum dot light emitting devices. The developed technique allows for the direct and permanent coupling of p-i-n-doped quantum dot micropillar cavities to single-mode optical fibers. The coupling process, fully carried out at room temperature, involves a spatial scanning technique, where the fiber facet is positioned relative to a device with a diameter of 2 $μ$m using the fiber-coupled electroluminescence of the cavity emission as a feedback parameter. Subsequent gluing and UV curing enables a rigid and permanent coupling between micropillar and fiber core. Comparing our experimental results with finite element method simulations indicates a cavity-to-fiber mode-coupling efficiency of ~46%. Furthermore, we demonstrate pulsed current injection at a repetition rate exceeding 200 MHz as well as low-temperature operation down to 77 K of the fiber-coupled micropillar device. The technique presented in this work is an important step in the quest for efficient and practical quantum light sources for applications in quantum information.
description: 12 pages, 4 figures, revised including additional low-temperature data, to be published in APL
Enhanced adsorption and desorption of Cr(VI) from aqueous solution using hydrous Ce1–xZrxO2: Isotherm, kinetics and thermodynamic evaluation
Creators: name: Dobrosz-Gómez, Izabela
name: Gómez-García, Miguel-Ángel
name: Rynkowski, Jacek Michał
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Cancer
subject: Inorganic Chemistry
subject: Plant Biology

description: Hydrous Ce1–xZrxO2 (x = 0.25; 0.5; 0.75) mixed oxides were used as potential Cr(VI) adsorbents, expecting to take an advantage of benefits of their corresponding single oxides (e.g. high adsorption capacity) and to eliminate their weaknesses (e.g. limited reusability, long adsorption time). Chemical incorporation of ZrO2 into CeO2 lattice significantly changed the texture and the morphology of hydrous single oxides, enhancing their adsorptive and desorptive properties. Cr(VI) removal efficiency depended on Ce/Zr molar ratio, increasing in the following order: CeO20.75Zr0.25O20.5Zr0.5O2< ZrO20.25Zr0.75O2. Hydrous Ce0.25Zr0.75O2 showed the highest adsorption capacity (ca. 35.5 mg g−1), desorption efficiency (ca. 34.5 mg g−1), short time needed to attain adsorption equilibrium (30 min) and chemical stability (90% of original Cr(VI) adsorption capacity in the third cycle). Cr(VI) adsorption on hydrous Ce1–xZrxO2 oxides obeyed the Langmuir isotherm model and followed a pseudo-second-order kinetic model. The values of thermodynamic parameters indicated exothermic and spontaneous adsorption. For hydrous Ce–Zr oxides, adsorption was governed mainly by physisorption and ion exchange, making possible effective and fast regeneration. For hydrous CeO2 and ZrO2, Cr(VI) adsorption was not completely reversible. Reduction of Cr(VI) to Cr(III), on CeO2 surface, and formation of ≡Zr–OH2+–HCrO4− complex on ZrO2 surface, were also considered as suppliers of Cr(VI) removal. Successive Cr(VI) adsorption/desorption capacity on hydrous Ce1–xZrxO2
title: A device agnostic analysis framework for wearables' data – learnings from a PhIIb trial
Creators: name: Ahrens, Maike
name: Voss, Sebastian
name: Kramer, Frank
name: Kunz, Michael
name: Koechert, Karl
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: wearables
subject: time series
subject: clinical development
subject: 610 Medical sciences; Medicine

description: Background: Wearables aka direct patient sensor data are a promising new type of data in interventional clinical trials. These data with heart rate as an example often come with an unprecedented resolution in the time domain and are therefore promising candidates to measure the complex dynamics of either[for full text, please go to the a.m. URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
Self-Averaging Scaling Limits of Two-Frequency Wigner Distribution for Random Paraxial Waves
Creators: name: Fannjiang, Albert C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Two-frequency Wigner distribution is introduced to capture the asymptotic behavior of the space-frequency correlation of paraxial waves in the radiative transfer limits. The scaling limits give rises to deterministic transport-like equations. Depending on the ratio of the wavelength to the correlation length the limiting equation is either a Boltzmann-like integral equation or a Fokker-Planck-like differential equation in the phase space. The solutions to these equations have a probabilistic representation which can be simulated by Monte Carlo method. When the medium fluctuates more rapidly in the longitudinal direction, the corresponding Fokker-Planck-like equation can be solved exactly.
description: typos corrected
title: Big Data Requires Big Caution – OMICS Data Are No Exception
Creators: name: Allmer, Jens
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: OMICS
subject: big data
subject: microRNA
subject: regulation
subject: RNA-seq
subject: transcriptomics
subject: 610 Medical sciences; Medicine

description: Background: Changes in gene expression are a hallmark of disease. Transcripts can be regulated by transcription factors (proteins) and protein abundance can be regulated by microRNAs (miRNAs). These post-transcriptional regulators of gene expression are co-transcribed with genes or originate from their[for full text, please go to the a.m. URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
title: Big Data or structured datasets – hurdles on the path towards the realization of hopes
Creators: name: Pigeot, Iris
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Background: The term “Big Data” is ubiquitous in these days: in the context of modern media, cutting-edge technologies, data protection, but also in the context of potentials and challenges in science and research. However, it is pretty obvious that there is no clear distinction between[for full text, please go to the a.m. URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
Estimation of Galactic model parameters in high latitudes with 2MASS
Creators: name: Cabrera-Lavers, A.
name: Bilir, S.
name: Ak, S.
name: Yaz, E.
name: Lopez-Corredoira, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we try to find any dependence of the Galactic structural parameters with the Galactic longitude for either the thin disc or the thick disc of the Milky Way, that would indicate to possible inhomogeneities or asymmetries in those Galactic components. Galactic model parameters obtained using a set of 36 high-latitude fields with 2MASS photometry for the different fields show that, effectively, they are Galactic longitude-dependent. The thick disc scaleheight changes from 800 pc at 150 deg < l < 230 deg to 1050 pc at |l| < 30 deg. A plausible explanation for this finding might be the effect of the flare in this Galactic component that changes the scaleheight with Galactocentric distance
description: 9 pages, 15 figures (accepted for publication in A&A)
Scattering theory with a natural regularization: Rediscovering the J-matrix method
Creators: name: Alhaidari, A. D.
name: Bahlouli, H.
name: Abdelmonem, M. S.
name: Al-Ameen, F. S.
name: Al-Abdulaal, T. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In three dimensional scattering, the energy continuum wavefunction is obtained by utilizing two independent solutions of the reference wave equation. One of them is typically singular (usually, near the origin of configuration space). Both are asymptotically regular and sinusoidal with a phase difference (shift) that contains information about the scattering potential. Therefore, both solutions are essential for scattering calculations. Various regularization techniques were developed to handle the singular solution leading to different well-established scattering methods. To simplify the calculation the regularized solutions are usually constructed in a space that diagonalizes the reference Hamiltonian. In this work, we start by proposing solutions that are already regular. We write them as infinite series of square integrable basis functions that are compatible with the domain of the reference Hamiltonian. However, we relax the diagonal constraint on the representation by requiring that the basis supports an infinite tridiagonal matrix representation of the wave operator. The hope is that by relaxing this constraint on the solution space a larger freedom is achieved in regularization such that a natural choice emerges as a result. We find that one of the resulting two independent wavefunctions is, in fact, the regular solution of the reference problem. The other is uniquely regularized in the sense that it solves the reference wave equation only outside a dense region covering the singularity in configuration space. However, asymptotically it is identical to the irregular solution. We show that this natural and special regularization is equivalent to that already used in the J-matrix method of scattering.
description: 10 pages
The Quantum Nature of a Nuclear Phase Transition
Creators: name: Bonasera, A.
name: Chen, Z.
name: Wada, R.
name: Hagel, K.
name: Natowitz, J.
name: Sahu, P.
name: Qin, L.
name: Kowalski, S.
name: Keutgen, Th.
name: Materna, T.
name: Nakagawa, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In their ground states, atomic nuclei are quantum Fermi liquids. At finite temperatures and low densities, these nuclei may undergo a phase change similar to, but substantially different from, a classical liquid gas phase transition. As in the classical case, temperature is the control parameter while density and pressure are the conjugate variables. At variance with the classical case, in the nucleus the difference between the proton and neutron concentrations acts as an additional order parameter, for which the symmetry potential is the conjugate variable. Different ratios of the neutron to proton concentrations lead to different critical points for the phase transition. This is analogous to the phase transitions occurring in $^{4}$He-$^{3}$He liquid mixtures. We present experimental results which reveal the N/Z dependence of the phase transition and discuss possible implications of these observations in terms of the Landau Free Energy description of critical phenomena.
description: 5 pages, 4 figures
Accreting corona model of the X-ray variability in soft state X-ray binaries and active galactic nuclei
Creators: name: Janiuk, A.
name: Czerny, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We develop a two-flow model of accretion onto a black hole which incorporates the effect of the local magneto-rotational instability. The flow consists of an accretion disk and an accreting corona, and the local dynamo affects the disk/corona mass exchange. The model is aimed to explain the power spectrum density of the sources in their soft, disk-dominated states. The local perturbations of the magnetic field in the disk are described as in King et al. (2004) and Mayer and Pringle (2005), but the time-dependent local magnetic field is assumed to affect the local supply of the material to the corona. Since the viscous timescale in the corona is much shorter than in the disk, the local perturbations are not smeared in the corona. Simple analytical estimates and full time-dependent computations of the disk-corona system are performed. The accreting corona model can reproduce the broad power spectra of Soft State X-ray binaries and AGN. The model, however, predicts that (i) sources undergoing radiation pressure instability (GRS 1915+105) should have systematically steeper power spectra than other sources, (ii) AGN should have systematically steeper power spectra than GBH, even if their disks are described using viscosity proportional to the gas pressure. More precise measurements of power spectra of Soft State sources are clearly needed.
description: 14 pages; 15 figures. Accepted for Astronomy & Astrophysics
Reproductive behaviour in the male rat: importance of 5-HT2 receptor activity and relation to 5-HT2-dependent serotonergic stereotypy
Creators: name: Watson, Neil Verne
Publisher: name: University of British Columbia
Year: 2009

description: It is well established that the neurotransmitter serotonin participates in the control of sexual behaviour in the male rat. Recently, it has been found that serotonergic activity may either inhibit or facilitate sexual behaviour, depending on the subtypes of serotonin receptors involved. However, the participation of 5-HT2 receptors in the control of male rat copulation has received little experimental attention, and the published data are equivocal. In Experiments 1-4, it was established that the 5- HT2/1C agonist DCI inhibits sexual behaviour in male rats; this inhibition is effectively reversed by the antagonists ritanserin, pirenperone, and ketanserin. Comparison of these effects , with reference to the binding profiles of each drug, provided strong evidence that 5-HT2/1C receptors mediate an inhibitory influence on sexual behaviour in male rats. In addition, a tentative claim may be made that the effects of these drugs may be more attributable to 5-HT2 activity than 5-UT1C activity. ‘Wet dog shake’ behaviour in rats is known to be 5-HT2- dependent. Experiments 5—7 evaluated the novel proposition that the incidence of spontaneous wet dog shaking (WDS) by male rats in mating tests may provide a behavioural assay of concurrent 5—HT2 activity. WDS was found to be associated with copulatory inhibition in noncopulating males, compared to normal copulators, and this relationship was specific to mating situations. Activating 5-HT2/1C receptors with DOl simultaneously induced WDS and inhibited copulation. Thus, the incidence of spontaneous WDS in untreated males may reflect the function of a 5—HT2—mediated neural mechanism that tonically inhibits copulation in male rats. In Experiment 8, DOl microinjection in the nucleus raphe obscurus/inferior olivary complex also induced WDS and inhibited copulation. This suggests that the hypothesized 5- flT2-dependent inhibitory mechanism is vested in the ventromedial brainstem. Recent anatomical findings support this suggestion: cells in this region have bifurcating axons, projecting collaterally to both the medial preoptic area (implicated in sexual behaviour) and to the ventral cervical spinal cord (implicated in WDS). Overall, the results of the eight experiments provide strong evidence that 5-HT2 receptors mediate some of the inhibitory effects of serotonin on male rat sexual behaviour.
The Green's Function of the Holstein Polaron
Creators: name: Goodvin, Glen L.
name: Berciu, Mona
name: Sawatzky, George A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a novel, highly efficient yet accurate analytical approximation for the Green's function of a Holstein polaron. It is obtained by summing all the self-energy diagrams, but with each self-energy diagram averaged over the momenta of its free propagators. The result becomes exact for both zero bandwidth and for zero electron-phonon coupling, and is accurate everywhere in the parameter space. The resulting Green's function satisfies exactly the first six spectral weight sum rules. All higher sum rules are satisfied with great accuracy, becoming asymptotically exact for coupling both much larger and much smaller than the free particle bandwidth. Comparison with existing numerical data also confirms this accuracy. We use this approximation to analyze in detail the redistribution of the spectral weight as the coupling strength varies.
description: 21 pages, 54 figures
Finding long cycles in graphs
Creators: name: Marinari, Enzo
name: Semerjian, Guilhem
name: Van Kerrebroeck, Valery
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Complexity (cs.CC)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We analyze the problem of discovering long cycles inside a graph. We propose and test two algorithms for this task. The first one is based on recent advances in statistical mechanics and relies on a message passing procedure. The second follows a more standard Monte Carlo Markov Chain strategy. Special attention is devoted to Hamiltonian cycles of (non-regular) random graphs of minimal connectivity equal to three.
Correlated transport of FQHE quasiparticles in a double-antidot system
Creators: name: Averin, Dmitri V.
name: Nesteroff, James A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have calculated the linear conductance associated with tunneling of individual quasiparticles of primary quantum Hall liquids with filling factors $ν=1/(2m+1)$ through a system of two antidots in series. On-site Coulomb interaction simulates the Fermi exclusion and makes the quasiparticle dynamics similar to that of tunneling electrons. The liquid edges serve as the quasiparticle reservoirs, and also create the dissipation mechanism for tunneling between the antidots. In the regime of strong dissipation, the conductance should exhibit resonant peaks of unusual form and a width proportional to the quasiparticle interaction energy $U$. In the weakly-damped regime, the shape of the resonant conductance peaks reflects coherent tunnel coupling of the antidots. The Luttinger-liquid singularity in the rates of quasiparticle tunneling to/from the liquid edges manifests itself as an additional weak resonant structure in the conductance curves.
description: 9 pages including 5 figures
Winning the pressing down game but not Banach Mazur
Creators: name: Kellner, Jakob
name: Pauna, Matti
name: Shelah, Saharon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03E35;03E55

description: Let $S$ be the set of those $α\inω_2$ that have cofinality $ω_1$. It is consistent relative to a measurable that the nonempty player wins the pressing down game of length $ω_1$, but not the Banach Mazur game of length $ω+1$ (both games starting with $S$).
description: New version: some improvements in presentation, references, history; main theorem slightly strengthened; some typos removed
Super-resolving Herschel imaging: a proof of concept using Deep Neural Networks
Creators: name: Lauritsen, Lynge
name: Dickinson, Hugh
name: Bromley, Jane
name: Serjeant, Stephen
name: Lim, Chen-Fatt
name: Gao, Zhen-Kai
name: Wang, Wei-Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Wide-field sub-millimetre surveys have driven many major advances in galaxy evolution in the past decade, but without extensive follow-up observations the coarse angular resolution of these surveys limits the science exploitation. This has driven the development of various analytical deconvolution methods. In the last half a decade Generative Adversarial Networks have been used to attempt deconvolutions on optical data. Here we present an autoencoder with a novel loss function to overcome this problem in the sub-millimeter wavelength range. This approach is successfully demonstrated on Herschel SPIRE 500$μ$m COSMOS data, with the super-resolving target being the JCMT SCUBA-2 450$μ$m observations of the same field. We reproduce the JCMT SCUBA-2 images with high fidelity using this autoencoder. This is quantified through the point source fluxes and positions, the completeness and the purity.
description: Published by MNRAS in Volume 507 issue 1 October 2021, 12 pages, 7 figures. https://doi.org/10.1093/mnras/stab2195
title: Fitness for use of EHR data: lessons learned from a study using histology data
Creators: name: Richter, Adrian
name: Chenot, Jean-Francois
name: Sierocinski, Elizabeth
name: Schmidt, Carsten Oliver
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Background: Big data is often conceived as real-world-data such as electronic health records (EHR) (1). A common hope is the use of EHR data for a better care and personalized medicine. Ideally, data should be accessible and analyzed in real-time. Yet, a vast number of proprietary electronic data capturing[for full text, please go to the a.m. URL]
description: 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)
The MicroMegas detector as Muon Detector for Trigger and Tracking in the New Small Wheel of the ATLAS upgrade at HL-LHC at CERN – A Feasibility study:
Creators: name: Σιδηροπούλου, Ουρανία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Ανιχνευτές ΜicroMegas
ΑΤΛΑΣ
Νέο Φασματοσκόπιο Μιονίων
MicroMegas detector
ATLAS
New Small Wheel

description: O σκοπός αυτής της διπλωματικής εργασίας είναι oι μελέτες απόδοσης των ανιχνευτών MicroMegas, ως ανιχνευτές τροχιών και σκανδαλισμού, που θα εγκατασταθούν στο New Small Wheel (NSW) του μιονικού φασματομέτρου στο πείραμα ATLAS στο CERN στα πλαίσια της αναβάθμισης HL-LHC. Οι μελέτες που έχουν πραγματοποιηθεί αφορούν την αποδοτικότητα και αποδοχή των ανιχνευτών του NSW, η οποία μετρήθηκε σε δύο στάδια της προσομείωσης, πρώτον στο επίπεδο των σημείων στο χώρο από όπου πέρασε η τροχιά και δεύτερον μετά το στάδιο όπου αυτά τα σημεία στο χώρο μεταφράζονται στην αναμενόμενη απόκριση του σήματος του ανιχνευτή. Η αποδοτικότητα και αποδοχή των ανιχνευτών MicroMegas η οποία μετρήθηκε για το πρώτο επίπεδο επιλογής (σκανδαλισμού) στη διαδικασία επιλογής και αποδοχής της λήψης δεδομένων του ATLAS. Τέλος πραγματοποιήθηκαν τεστ σε ένα συγκεκριμένο σύστημα ανάγνωσης προκειμένου να διαβαστούν τα δεδομένα από τους ανιχνευτές MicroMegas μαζί με το υπόλοιπο σύστημα ανάγνωσης που χρησιμοποιείται στο ATLAS. Για το σκοπό αυτό αναπτύχθηκε ένας ειδικός αλγόριθμος προκειμένου να επαληθευτεί η ακεραιότητα των δεδομένων που μεταβιβάζονταν στα διάφορα υποσυστήματα του ATLAS.
description: The purpose of this thesis is the study of the performance of the MicroMegas detectors as muon tracking and triggering detectors that will be placed in the New Small Wheel (NSW), the innermost end-cap layer of the muon spectrometer in the ATLAS experiment at CERN, for the HL-LHC upgrade. The studies that have been performed concern the NSW muon acceptance and efficiency which was measured at two stages of the simulation chain; once at the level of the simulated hits, namely the space points that were recorded in the sensitive detector volume and once after those hits were translated into the expected signal response of the MicroMegas detector technology. The acceptance and efficiency of the Micromegas detectors was also measured for the Level 1 trigger in the ATLAS TDAQ chain. Finally a ReadOutDriver was tested to readout the MicroMegas detectors together with all the other ATLAS subsystems. A dedicated algorithm has been developed to validate the integrity of the raw data that were transmitted to the ATLAS TDAQ system.
Optical lattice quantum Hall effect
Creators: name: Palmer, Rebecca N.
name: Klein, Alexander
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We explore the behavior of interacting bosonic atoms in an optical lattice subject to a large artificial magnetic field. We extend earlier investigations of this system where the number of magnetic flux quanta per unit cell alpha is close to a simple rational number [Phys. Rev. Lett. 96, 180407 (2006)]. Interesting topological states such as the Laughlin and Read-Rezayi states can occur even if the atoms experience a weak trapping potential in one direction. An explicit numerical calculation near alpha = 1/2 shows that the system exhibits a striped vortex lattice phase of one species, which is analogous to the behavior of a two-species system for small alpha. We also investigate methods to probe the encountered states. These include spatial correlation functions and the measurement of noise correlations in time of flight expanded atomic clouds. Characteristic differences arise which allow for an identification of the respective quantum Hall states. We furthermore discuss that a counterintuitive flow of the Hall current occurs for certain values of alpha.
description: 14 pages, 5 figures, slight changes in the Introduction, typos corrected