cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Large-scale nuclear structure calculations for spin-dependent WIMP scattering with chiral effective field theory currents
Creators: name: Klos, P.
name: Menéndez, J.
name: Gazit, D.
name: Schwenk, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We perform state-of-the-art large-scale shell-model calculations of the structure factors for elastic spin-dependent WIMP scattering off 129,131Xe, 127I, 73Ge, 19F, 23Na, 27Al, and 29Si. This comprehensive survey covers the non-zero-spin nuclei relevant to direct dark matter detection. We include a pedagogical presentation of the formalism necessary to describe elastic and inelastic WIMP-nucleus scattering. The valence spaces and nuclear interactions employed have been previously used in nuclear structure calculations for these mass regions and yield a good spectroscopic description of these isotopes. We use spin-dependent WIMP-nucleus currents based on chiral effective field theory (EFT) at the one-body level and including the leading long-range two-body currents due to pion exchange, which are predicted in chiral EFT. Results for all structure factors are provided with theoretical error bands due to the nuclear uncertainties of WIMP currents in nuclei.
description: 25 pages, 13 figures. Version v4 with small typos corrected in Eqs.(8),(10),(20) and in the Appendix
Archäologische Befunde zur Entsorgung mittelalterlicher Städte am Beispiel Freiburgs
Creators: name: Schmidt-Thomé, Peter
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 7, Nr. 2 (1984): Archäologische Informationen
Top quark mass measurements at and above threshold at CLIC
Creators: name: Seidel, Katja
name: Simon, Frank
name: Tesar, Michal
name: Poss, Stephane
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a study of the expected precision of the top quark mass determination, measured at a linear e+ e- collider based on CLIC technology. GEANT4-based detector simulation and full event reconstruction including realistic physics and beam-induced background levels are used. Two different techniques to measure the top mass are studied: The direct reconstruction of the invariant mass of the top quark decay products and the measurement of the mass together with the strong coupling constant in a threshold scan, in both cases including first studies of expected systematic uncertainties. For the direct reconstruction, experimental uncertainties around 100 MeV are achieved, which are at present not matched by a theoretical understanding on a similar level. With a threshold scan, total uncertainties of around 100 MeV are achieved, including theoretical uncertainties in a well-defined top mass scheme. For the threshold scan, the precision at ILC is also studied to provide a comparison of the two linear collider technologies.
description: 14 pages, 8 figures, published in EPJ C
title: Χαρτογράφηση fMRI σε 3Δ πρότυπο άτλαντα για ταυτοποίηση ενεργοποίησης σε λειτουργικές περιοχές εγκεφάλου
title: Registration of fMRI on a 3D brain atlas for matching of functional activation compontments
Creators: name: Κλαδος Γεωργιος
Publisher: name: Technical University of Crete
Year: 2019

description: Πολλές μελέτες έχουν εξετάσει τη σχέση μεταξύ των διαφορετικών περιοχών του εγκεφάλου σε ασθενείς με κάποια εγκεφαλική βλάβη (εγκεφαλικό επεισόδιο, εγκεφαλικό τραύμα, αφαίρεση ιστού νευροχειρουργικής επέμβασης) και τις επιπτώσεις τους στις γνωστικές, κινητικές και αισθητηριακές λειτουργίες. Στις μέρες μας είναι πλέον εδραιωμένο ότι ο εγκέφαλος λειτουργεί ως δίκτυο. Για αυτό τα συμπτώματα που παρουσιάζονται σε ένα άτομο προκύπτουν ως συνδυασμός της επίδρασης της βλάβης σε μια εγκεφαλική περιοχή και της συνδεσιμότητας αυτής με άλλες υγιείς. Σκοπός της παρούσας εργασίας είναι η ανάπτυξη προγράμματος φιλικό προς το χρήστη, το οποίο θα αναζητεί τις λειτουργίες που σχετίζονται με κάποια δοθείσα περιοχή και τον τρόπο που εκείνες την επηρεάζουν. Επιπλέον, το λογισμικό θα επιχειρήσει την αναζήτηση των περιοχών που ενεργοποιούνται μαζί(συν-ενεργοποιούνται) με την δοθείσα περιοχή. Επίσης, θα παράσχει δύο διαφορετικούς τρόπους οπτικοποίησης των δεδομένων για καλύτερη παρατήρηση και κατανόηση. Έτσι, εγκεφαλικές περιοχές θα συνδεθούν με λειτουργικούς όρους και θα εκτιμηθούν πιθανές ελλείψεις στις ανθρώπινες λειτουργίες. Τέλος, οι εξαγόμενες πληροφορίες από κάποια συγκεκριμένη εγκεφαλική περιοχή, πιθανότατα να βοηθήσουν τους γιατρούς στην λήψη αποφάσεων σε περίπτωση χειρουργικής τομής. Πλέον, οι γιατροί με τη χρήση του συγκεκριμένου προγράμματος θα προειδοποιούνται για πιθανές επιπτώσεις στις λειτουργίες του ασθενή μετά από χειρουργική επέμβαση στον εγκέφαλο.
description: Many studies have focused on the association between different human brain regions in patients with brain lesion (stroke, traumatic brain injury, neurosurgery tissue removal) and their effects on cognitive, motor and sensitive functions. Nowadays, it is well established that the brain works as network and the symptoms in a person are a combination of the direct impact of the lesion in a single region and its connectivity with other healthy brain regions. The purpose of this work is to develop a user-friendly application that will attempt to find these physiological functions and psychological terms which are associated with given brain region (ROI) and the way that physiological terms affect the given brain region. In addition, it will attempt to find the brain regions that are activated together (co-activated) with the given brain region. Finally, it will provide two different ways of visualizing data for better observation and understanding. Thus, brain regions will be linked to functional terms and possible deficiencies in human operations will be estimated. The extracted information may provide information about the brain region that can help the doctors decide about a surgical incision. Finally, our application will warn the doctor about the cognitive deficits after Neurosurgery.
Dixmier approximation and symmetric amenability for C*-algebras
Creators: name: Ozawa, Narutaka
Publisher: name: arXiv
Year: 2013
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We study some general properties of tracial C*-algebras. In the first part, we consider Dixmier type approximation theorem and characterize symmetric amenability for C*-algebras. In the second part, we consider continuous bundles of tracial von Neumann algebras and classify some of them.
description: 19 pages; minor update (v2)
Exact spectral function of the Tonks-Girardeau gas at finite temperature
Creators: name: Patu, Ovidiu I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the derivation of determinant representations for the Green's functions and spectral function of the trapped Tonks-Girardeau gas on the lattice and in the continuum. Our results are valid for any type of statistics of the constituent particles, at zero and finite temperature and arbitrary confining potentials, including nonequilibrium scenarios induced by sudden changes of the external potential. In addition, they are also extremely efficient and easy to implement numerically with the main computational effort being represented by the calculation of partial overlaps of the dynamically evolved single particle wavefunctions. In the lattice case we show that the spectral function of a system with a strong harmonic potential presents only two singular lines compared with three singular lines in the case of a homogeneous system.
description: 20 pages, 2 figures, RevTeX 4.2, Eq. 91 corrected
Der Verein Bandkeramisches Aktionsmuseum e.V. stellt vor: "Die Bandkeramiker - Erste Steinzeitbauern in Deutschland"
Creators: name: Ramminger, Britta
name: Engelbrecht, Tessa
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 28, Nr. 1&2 (2005): Archäologische Informationen
Precious Resource: An Analysis on the Workload of Stage Managers
Creators: name: Ho, Dennis
Publisher: name: Columbia University
Year: 2020
Subjects: Stage management
Stage managers
Theater
Theater--Production and direction

description: Contradictory to labor acts that formed unions within the United States, the workers still permeate an unhealthy culture of exhaustion and burnouts for the sake of professional dignity and pride; especially in the world of performing arts where a majority of stage managers uphold themselves to a high pedestal of overwork with lacking support. In this analysis, I argue that the career of stage management has laid out circumstances where one feels like they must remain complacent in the ongoing sacrifices they make to fulfill the “show must go on” motto. This paper analyses the possible origins of this overwork culture that America created and flourished under capitalism which later adapted to meet the demands of current theatrical productions. Under these demands are faced by stage managers whom are asked to give a lot with little backing.
title: Σχεδίαση ηλεκτρονικού συστήματος ελέγχου για την μεγιστοποίηση της παραγωγής ενέργειας φωτοβολταϊκών συστοιχιών, βασισμένου σε τεχνικές τεχνητής νοημοσύνης
title: Design of an electronic control system for maximizing the energy production of photovoltaic arrays, based on artificial intelligence techniques
Creators: name: Καλογερακης Χρηστος
Publisher: name: Technical University of Crete
Year: 2019

description:  The subject of this thesis is the design of an electronic energy management system for maximizing the power generated by a photovoltaic (PV) array. For that purpose, an innovative Maximum Power Point Tracking (MPPT) algorithm was developed, which is based on reinforcement learning, in order to operate the PV array at the Maximum Power Point (MPP) under uniform and non-uniform incident solar irradiation conditions. The PV system under study consists of an MPPT control unit, a DC/DC Boost-type power converter and a battery. For the implementation of the MPPT control system, four different Q-learning-based MPPT methods and a Particle Swarm Optimization-based (PSO) MPPT method were implemented. The Qlearning-based MPPT algorithms were simulated for multiple alternative shading patterns of the PV array and their performance was compared to that of the PSO-based MPPT method. The simulation results demonstrated that the Q-learning-based methods exhibit faster convergence to the global MPP (GMPP) than the PSO-based MPPT method when an appropriate learning process has been applied before their execution.
Integration of spatial data context into machine learning models
Creators: name: Liu, Wendi
name: 0000-0003-0233-4672
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Geostatistics
Machine learning
Neural network

description: The oil and gas industry, over its long history, has accumulated a large volume of spatial data from various resources like seismic surveys, well logs and production information, which provide a huge potential for data analytics and machine learning application to assist physics-based models. The ongoing digitalization transformation in the oil and gas industry also emphasizes this opportunity. In addition, the nature of unconventional resources poses the challenges of high uncertainty among the data measurements and less well-understood production mechanisms. The challenges bring data-driven solutions like machine learning to our attention to support reservoir modeling and decision-making. However, the data-driven tools tend to ignore essential spatial contexts when they are directly used for subsurface data, which may cause unrealistic results and high-cost risk. The spatial context mentioned here refers to the spatial continuity, heterogeneity, sampling bias, data sparsity relative to the reservoir scale, etc. Also, in traditional workflows, machine learning especially deep learning are used as a black-box tool that is hard for domain experts to interrogate and the data sparsity renders the models with a large number of parameters prone to overfit. Due to the high value of subsurface development decisions, models must be understandable to be used to support decision making. Therefore, it is critical to customize the current machine learning and data analytics techniques to account for the spatial, multivariate, and multiscale information among the data as well as bring domain knowledge and physics constraints into the workflow, providing model interpretability. This dissertation bridges the gap between the widely applied data-driven workflows and complex spatial context among subsurface data. This dissertation presents interpretable, data-driven workflows specifically designed for spatial, multivariate, multiscale data with domain expertise and physics constraints for more accurate subsurface predictions with greater confidence to decision-support. The proposed workflows improve classical data-driven predictions in subsurface applications by integrating the spatial context, physics constraints and domain expertise with innovative use of geostatistics and graph neural networks. The novel, comprehensive workflows cover spatial data analytics steps from data pre-processing, including sampling bias mitigation, spatial feature engineering, anomaly segmentation, to production forecasting to support decision-making.
Large Interferometer For Exoplanets (LIFE): VI. Detecting rocky exoplanets in the habitable zones of Sun-like stars
Creators: name: Kammerer, Jens
name: Quanz, Sascha P.
name: Dannert, Felix
name: Collaboration, the LIFE
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: While previous studies have shown a strong preference for a future mid-infrared nulling interferometer space mission to detect planets within the HZ around M dwarfs, we here focus on a more conservative approach toward the concept of habitability and present yield estimates for two stellar samples consisting of nearby (d<20 pc) Sun-like stars (4800-6300 K) and nearby FGK-type stars (3940-7220 K) accessible to such a mission. Our yield estimates are based on recently derived occurrence rates of rocky planets from the Kepler mission and our LIFE exoplanet observation simulation tool LIFEsim, which includes all main astrophysical noise sources, but no instrumental noise sources as yet. Depending on a pessimistic or optimistic extrapolation of the Kepler results, we find that during a 2.5-year search phase, LIFE could detect between ~10-16 (average) or ~5-34 (including 1$σ$ uncertainties) rocky planets (0.5-1.5 R${}_\rm{Earth}$) within the optimistic HZ of Sun-like stars and between ~4-6 (average) or ~1-13 (including 1$σ$ uncertainties) exo-Earth candidates (EECs) assuming four collector spacecraft equipped with 2 m mirrors and a conservative instrument throughput of 5%. With D=3.5 m or 1 m mirrors, the yield $Y$ changes strongly, following approximately $Y \propto D^{3/2}$. With the larger sample of FGK-type stars, the yield increases to ~16-22 (average) rocky planets within the optimistic HZ and ~5-8 (average) EECs. Furthermore, we find that in addition to the mirror diameter, the yield depends strongly on the total throughput, but only weakly on the exozodiacal dust level and the accessible wavelength range of the mission. When the focus lies entirely on Sun-like stars, larger mirrors (~3 m with 5% total throughput) or a better total throughput (~20% with 2 m mirrors) are required to detect a statistically relevant sample of ~30 rocky planets within the optimistic HZ.
description: 19 pages, 13 figures, accepted for publication in A&A
The VIMOS Public Extragalactic Redshift Survey (VIPERS). A Support Vector Machine classification of galaxies, stars and AGNs
Creators: name: Malek, K.
name: Solarz, A.
name: Pollo, A.
name: Fritz, A.
name: Garilli, B.
name: Scodeggio, M.
name: Iovino, A.
name: Granett, B. R.
name: Abbas, U.
name: Adami, C.
name: Arnouts, S.
name: Bel, J.
name: Bolzonella, M.
name: Bottini, D.
name: Branchini, E.
name: Cappi, A.
name: Coupon, J.
name: Cucciati, O.
name: Davidzon, I.
name: De Lucia, G.
name: de la Torre, S.
name: Franzetti, P.
name: Fumana, M.
name: Guzzo, L.
name: Ilbert, O.
name: Krywult, J.
name: Brun, V. Le
name: Fevre, O. Le
name: Maccagni, D.
name: Marulli, F.
name: McCracken, H. J.
name: Paioro, L.
name: Polletta, M.
name: Schlagenhaufer, H.
name: Tasca, L. A. M.
name: Tojeiro, R.
name: Vergani, D.
name: Zanichelli, A.
name: Burden, A.
name: Di Porto, C.
name: Marchetti, A.
name: Marinoni, C.
name: Mellier, Y.
name: Moscardini, L.
name: Nichol, R. C.
name: Peacock, J. A.
name: Percival, W. J.
name: Phleps, S.
name: Wolk, M.
name: Zamorani, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The aim of this work is to develop a comprehensive method for classifying sources in large sky surveys and we apply the techniques to the VIMOS Public Extragalactic Redshift Survey (VIPERS). Using the optical (u*, g', r', i') and NIR data (z', Ks), we develop a classifier, based on broad-band photometry, for identifying stars, AGNs and galaxies improving the purity of the VIPERS sample. Support Vector Machine (SVM) supervised learning algorithms allow the automatic classification of objects into two or more classes based on a multidimensional parameter space. In this work, we tailored the SVM for classifying stars, AGNs and galaxies, and applied this classification to the VIPERS data. We train the SVM using spectroscopically confirmed sources from the VIPERS and VVDS surveys. We tested two SVM classifiers and concluded that including NIR data can significantly improve the efficiency of the classifier. The self-check of the best optical + NIR classifier has shown a 97% accuracy in the classification of galaxies, 97 for stars, and 95 for AGNs in the 5-dimensional colour space. In the test on VIPERS sources with 99% redshift confidence, the classifier gives an accuracy equal to 94% for galaxies, 93% for stars, and 82% for AGNs. The method was applied to sources with low quality spectra to verify their classification, and thus increasing the security of measurements for almost 4 900 objects. We conclude that the SVM algorithm trained on a carefully selected sample of galaxies, AGNs, and stars outperforms simple colour-colour selection methods, and can be regarded as a very efficient classification method particularly suitable for modern large surveys.
description: 14 pages, 11 figures, 9 tables, published in A&A
Quantized fields for optimal control in the strong coupling regime
Creators: name: Lindel, Frieder
name: Carnio, Edoardo G.
name: Buhmann, Stefan Yoshi
name: Buchleitner, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We tailor the quantum statistics of a bosonic field to deterministically drive a quantum system into a target state. Experimentally accessible states of the field achieve good control of multi-level or -qubit systems, notably also at coupling strengths beyond the rotating-wave approximation. This extends optimal control theory to the realm of fully quantized, strongly coupled control and target degrees of freedom.
Motifs in Triadic Random Graphs based on Steiner Triple Systems
Creators: name: Winkler, Marco
name: Reichardt, Joerg
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Conventionally, pairwise relationships between nodes are considered to be the fundamental building blocks of complex networks. However, over the last decade the overabundance of certain sub-network patterns, so called motifs, has attracted high attention. It has been hypothesized, these motifs, instead of links, serve as the building blocks of network structures. Although the relation between a network's topology and the general properties of the system, such as its function, its robustness against perturbations, or its efficiency in spreading information is the central theme of network science, there is still a lack of sound generative models needed for testing the functional role of subgraph motifs. Our work aims to overcome this limitation. We employ the framework of exponential random graphs (ERGMs) to define novel models based on triadic substructures. The fact that only a small portion of triads can actually be set independently poses a challenge for the formulation of such models. To overcome this obstacle we use Steiner Triple Systems (STS). These are partitions of sets of nodes into pair-disjoint triads, which thus can be specified independently. Combining the concepts of ERGMs and STS, we suggest novel generative models capable of generating ensembles of networks with non-trivial triadic Z-score profiles. Further, we discover inevitable correlations between the abundance of triad patterns, which occur solely for statistical reasons and need to be taken into account when discussing the functional implications of motif statistics. Moreover, we calculate the degree distributions of our triadic random graphs analytically.
description: 13 pages, 10 figures
Neutrino search from γ-ray bursts during the prompt and X-ray afterglow phases using 10 years of IceCube public data
Creators: name: Lucarelli, Francesco
name: Oganesyan, Gor
name: Montaruli, Teresa
name: Branchesi, Marica
name: Mei, Alessio
name: Ronchini, Samuele
name: Brighenti, Francesco
name: Banerjee, Biswajit
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Neutrino emission from gamma-ray bursts (GRBs) has been sought for a long time, and stringent limits on the most accredited GRB emission models have been obtained from IceCube. Multi-wavelength GRB observations of the last decades improved our knowledge of the GRB emission parameters, such as the Lorentz factor and the luminosity, which can vary from one GRB to another by several orders of magnitude. Empirical correlations among such parameters have been identified during the prompt phase, with direct implications on GRB models. In this work, we use the PSLab open-access code, developed for IceCube data analyses, to search for individual neutrino emission from the prompt and afterglow phases of selected GRBs, and for stacking emission from the ensemble of such GRBs. For the afterglow phase, we focus in particular on GRBs with X-ray flares and plateaus. While past stacking searches assumed the same GRB fluence at Earth, we present a stacking scheme based on physically motivated GRB weights. Moreover, we conceive a new methodology for the prompt phase that uses the empirical correlations to infer the GRB luminosity and Lorentz factor, when redshift measurements are not available. We do not observe any significant neutrino excess. Hence, we set constraints on the GRB neutrino fluxes and on relevant GRB parameters, including the magnetic field in the jet. Notably, the baryon loading is found to be <10 for typical GRB prompts, thus disfavoring a baryonic-dominated origin of the GRB ejecta.
description: Submitted for publication to A&A. Comments are welcome
The correlation between WISE 12 $μ$m emission and molecular gas tracers on sub-kpc scales in nearby star-forming galaxies
Creators: name: Gao, Yang
name: Tan, Qing-Hua
name: Gao, Yu
name: Fang, Min
name: Chown, Ryan
name: Jiao, Qian
name: Luo, Chun-Sheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We complement the MALATANG sample of dense gas in nearby galaxies with archival observations of $^{12}\rm CO$ and its isotopologues to determine scaling relations between Wide-field Infrared Survey Explorer (WISE) 12 $μ$m emission and molecular gas tracers at sub-kiloparsec scales. We find that 12 $μ$m luminosity is more tightly correlated with $^{12}\rm CO$ than it is with $^{13}\rm CO$ or dense gas tracers. Residuals between predicted and observed $^{12}\rm CO$ are only weakly correlated with molecular gas mass surface density ($Σ_{\rm mol}$) in regions where $Σ_{\rm mol}$ is very low ($\sim 10~{\rm M_{\odot}~pc^{-2}}$). Above this limit, the $^{12}\rm CO$ residuals show no correlations with physical conditions of molecular gas, while $^{13}\rm CO$ residuals depend on the gas optical depth and temperature. By analyzing differences from galaxy to galaxy, we confirm that the $^{12}\rm CO$-12 $μ$m relation is strong and statistically robust with respect to star forming galaxies and AGN hosts. These results suggest that WISE 12 $μ$m emission can be used to trace total molecular gas instead of dense molecular gas, likely because polycyclic aromatic hydrocarbons (PAHs, a major contributor to WISE 12 $μ$m~emission) may be well-mixed with the gas that is traced by $^{12}\rm CO$. We propose that WISE 12 $μ$m luminosity can be used to estimate molecular gas surface density for statistical analyses of the star formation process in galaxies.
description: 16 pages, 7 figures, accepted for publication in ApJ
การจำแนกหมวดหมู่สินค้าบนระบบอีคอมเมิร์ซโดยใช้เทคนิคการเรียนรู้เชิงลึกวิเคราะห์ภาพสินค้า
Creators: name: ฐิติรัตน์ ศิริบวรรัตนกุุล
Publisher: name: King Mongkut’s University of Technology Thonburi
Year: 2023
Subjects: Deep Learning
Image Classification
Categorizing products
E-commerce

description: KMUTT Research and Development Journal, 46, 2, 153-172
CD and PMD Effect on Cyclostationarity-Based Timing Recovery for Optical Coherent Receivers
Creators: name: Wang, Dawei
name: Qiao, Meng
name: Lian, Kunjian
name: Li, Zhaohui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Timing recovery is critical for synchronizing the clocks at the transmitting and receiving ends of a digital coherent communication system. The core of timing recovery is to determine reliably the current sampling error of the local digitizer so that the timing circuit may lock to a stable operation point. Conventional timing phase detectors need to adapt to the optical fiber channel so that the common effects of this channel, such as chromatic dispersion (CD) and polarization mode dispersion (PMD), on the timing phase extraction must be understood. Here we exploit the cyclostationarity of the optical signal and derive a model for studying the CD and PMD effect. We prove that the CD-adjusted cyclic correlation matrix contains full information about timing and PMD, and the determinant of the matrix is a timing phase detector immune to both CD and PMD. We also obtain other results such as a completely PMD-independent CD estimator, etc. Our analysis is supported by both simulations and experiments over a field implemented optical cable.
Linear confinement in the partially-deconfined phase
Creators: name: Gautam, Vaibhav
name: Hanada, Masanori
name: Holden, Jack
name: Rinaldi, Enrico
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the partially-deconfined saddle of large-$N$ pure Yang-Mills theory lying between confined and deconfined phases, in which the color degrees of freedom split into confined and deconfined sectors. Based on the microscopic mechanism of deconfinement, we argue that a flux tube is formed in the confined sector and a linear confinement potential is generated. The string tension should not depend on the size of the confined sector. We provide evidence by studying the finite-temperature strong-coupling lattice gauge theory. In particular, we make analytic predictions assuming linear confinement in the confined sector, and then confirm these by numerical simulations. We discuss some implications of the conjecture to QCD and holography.
description: A version accepted for publication in JHEP
Analysis of the contribution of the quantum anomaly energy to the proton mass
Creators: name: Wang, Xiao-Yun
name: Bu, Jingxuan
name: Zeng, Fancong
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the recent Hall C and GlueX measurements of $J/ψ$ photoproduction, a systematic analysis of the contribution of quantum anomalous energy (QAE) to the proton mass is carried out under the framework of the vector meson dominance model. The results show that the effective Pomeron model and the parametrized two gluon exchange model can explain the cross section of $J/ψ$ photoproduction well. Based on the predicted cross section values given by the two models, the distribution of the QAE contribution with the energy is extracted for the first time. Finally, the average value of the QAE contribution is estimated to be (3.50$\pm$0.70)$\%$, which suggests that the QAE contribution to the proton mass is small. Accordingly, we compared this result with those of other groups and explored the causes for the differences.
description: 8 pages, 9 figures
Recommandations aux auteurs publiant à la Römisch-Germanische Kommission
Creators: name: Redaktion, Die
Publisher: name: Bericht der Römisch-Germanischen Kommission
Year: 2017

description: Bericht der Römisch-Germanischen Kommission, Bd. 94. 2013 (2016): Bericht der Römisch-Germanischen Kommission
Identifying Compiler Options to Minimise Energy Consumption for Embedded Platforms
Creators: name: Pallister, James
name: Hollis, Simon
name: Bennett, Jeremy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: This paper presents an analysis of the energy consumption of an extensive number of the optimisations a modern compiler can perform. Using GCC as a test case, we evaluate a set of ten carefully selected benchmarks for five different embedded platforms. A fractional factorial design is used to systematically explore the large optimisation space (2^82 possible combinations), whilst still accurately determining the effects of optimisations and optimisation combinations. Hardware power measurements on each platform are taken to ensure all architectural effects on the energy consumption are captured. We show that fractional factorial design can find more optimal combinations than relying on built in compiler settings. We explore the relationship between run-time and energy consumption, and identify scenarios where they are and are not correlated. A further conclusion of this study is the structure of the benchmark has a larger effect than the hardware architecture on whether the optimisation will be effective, and that no single optimisation is universally beneficial for execution time or energy consumption.
description: 14 pages, 7 figures
[Bericht über Vorstandsbeschlüsse]
Creators: name: Vorstand, Der
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 47/48 (1869): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
title: Parallel optimization algorithms for very large tensor decompositions
title: Παράλληλοι αλγόριθμοι βελτιστοποίησης για παραγοντοποιήσεις πολύ μεγάλων τανυστών
Creators: name: Παπαγιαννακος Ιωαννης-Μαριος
Publisher: name: Technical University of Crete
Year: 2019

description: Tensors are generalizations of matrices to higher dimensions and are very powerful tools that can model a wide variety of multi-way data dependencies. As a result, tensor decompositions can extract useful information out of multi-aspect data tensors and have witnessed increasing popularity in various fields, such as data mining, social network analysis, biomedical applications, machine learning etc. Many decompositions have been proposed, but in this thesis we focus on Tensor Rank Decomposition or Canonical Polyadic Decomposition (CPD) using Alternating Least Squares (ALS). The main goal of the CPD is to decompose tensors into a sum of rank-1 terms, a procedure more difficult than its matrix counterpart, especially for large-scale tensors. CP decomposition via ALS consists of computationally expensive operations which cause performance bottlenecks. In order to accelerate this method and overcome these obstacles, we developed two parallel versions of the ALS that implement the CPD. The first one uses the full tensor and runs in parallel on heterogeneous & shared memory systems (CPUs and GPUs). The second one decomposes the tensor in parallel using small random block samples and runs on homogeneous & shared memory systems (CPUs).
Deforming Geometric Transitions
Creators: name: Rossi, Michele
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J32 (Primary) 81T30, 14B07, 14J10, 53D12 (Secondary)

description: After a quick review of the wild structure of the complex moduli space of Calabi-Yau threefolds and the role of geometric transitions in this context (the Calabi-Yau web) the concept of "deformation equivalence" for geometric transitions is introduced to understand the arrows of the Gross-Reid Calabi-Yau web as deformation-equivalence classes of geometric transitions. Then the focus will be on some results and suitable examples to understand under which conditions it is possible to get "simple" geometric transitions, which are almost the only well-understood geometric transitions both in mathematics and in physics.
description: 21 pg. Minor changes following referees remarks. Remark 12 and conclusive Table corrected and updated. Final version accepted for publication in Int. J. Geom. Methods Mod. Phys
ระบบตรวจสอบการรับรองฮาลาลสำหรับผลิตภัณฑ์อาหาร
Creators: name: อรรถพล อดุลยศาสน์
Publisher: name: King Mongkut’s University of Technology Thonburi
Year: 2023
Subjects: Halal Standard
Halal Product Database
Barcode
Image Processing

description: KMUTT Research and Development Journal, 46, 2, 173-190
The Impact of Social Contexts in Testing for Alpha-1 Antitrypsin Deficiency: The Roles of Physicians and Others
Creators: name: Klitzman, Robert L.
Publisher: name: Columbia University
Year: 2009
Subjects: Alpha 1-antitrypsin deficiency
Genetic disorders--Diagnosis
Genetic counseling--Social aspects
Physician and patient
Self-disclosure--Health aspects

description: Aims: To elucidate psychosocial and ethical issues faced by adults at risk for alpha-1 antitrypsin deficiency (AATD) that have received little attention. Methods: Eleven individuals with AATD were interviewed in detail for 2 hours each. Results: Several specific aspects of AATD created critical, socially dynamic issues that shaped the patients' responses. The disease being relatively newly discovered, physicians do not know much about it and thus often do not consider or recommend testing for it. Hence, patients who may benefit from diagnosis and treatment are not always diagnosed. General practitioners, when they do diagnose patients, often refer them to specialists and thus remain inexperienced in treating the disorder. As a result, many individuals, too, remain unaware of this disease in their families and thus do not consider mentioning its possibility to doctors or family members. Thus, intrafamilial disclosures by patients become critical. Patients may be shocked and upset at diagnosis, as they might possibly already have transmitted the mutation to offspring, which further impedes disclosure to family members. Conclusions: These issues highlight how patients' interactions with doctors and others concerning genetics are critical, and need to be further explored and addressed. Several aspects of physician education and practice (e.g., regarding disclosures to at-risk family members) need to be improved.
At the Intersection of Social Work, Technology, Innovation, and Ethics: Keynote speech for the Network for Social Work Management’s Virtual Emerging Leaders Institute
Creators: name: Marquart, Matthea S.
Publisher: name: Columbia University
Year: 2020
Subjects: Technology--Moral and ethical aspects
Social service
Information technology
Technological innovations
Social media

description: Slides from the keynote speech for the Network for Social Work Management’s Virtual Emerging Leaders Institute, June 3, 2020. Info about the NSWM Emerging Leaders Institute: https://socialworkmanager.org/programs/annual-management-conference/emerging-leaders-institute/
Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks II: Dust Ring Formation Mediated by Backreaction and Fragmentation
Creators: name: Tominaga, Ryosuke T.
name: Tanaka, Hidekazu
name: Kobayashi, Hiroshi
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In our previous work (Paper I), we demonstrated that coagulation instability results in dust concentration against depletion due to the radial drift and accelerates dust growth locally. In this work (Paper II), we perform numerical simulations of coagulation instability taking into account effects of backreaction to gas and collisional fragmentation of dust grains. We find that the slowdown of the dust drift due to backreaction regulates dust concentration in the nonlinear growth phase of coagulation instability. The dust-to-gas surface density ratio increases from $10^{-3}$ up to $\sim10^{-2}$. Each resulting dust ring tends to have mass of $\simeq0.5M_{\oplus}-1.5M_{\oplus}$ in our disk model. In contrast to Paper I, the dust surface density profile shows a local plateau structure at each dust ring. In spite of the regulation at the nonlinear growth, the efficient dust concentration reduces their collision velocity. As a result, dust grains can grow beyond the fragmentation barrier, and the dimensionless stopping time reaches unity as in Paper I. The necessary condition for the efficient dust growth is (1) weak turbulence of $α<1\times10^{-3}$ and (2) a large critical velocity for dust fragmentation ($> 1$ m/s). The efficient dust concentration in outer regions will reduce the inward pebble flux and is expected to decelerate the planet formation via the pebble accretion. We also find that the resulting rings can be unstable to secular gravitational instability (GI). The subsequent secular GI promotes planetesimal formation. We thus expect that a combination of these instabilities is a promising mechanism for dust-ring and planetesimal formation.
description: 23 pages, 17 figures, accepted for publication in ApJ
Towards topology optimization of pressure-driven soft robots
Creators: name: Kumar, Prabhat
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Soft robots are made of compliant materials that perform their tasks by deriving motion from elastic deformations. They are used in various applications, e.g., for handling fragile objects, navigating sensitive/complex environments, etc., and are typically actuated by Pneumatic/hydraulic loads. Though demands for soft robots are continuously increasing in various engineering sectors, due to the lack of systematic approaches, they are primarily designed manually. This paper presents a systematic density-based topology optimization approach to designing soft robots while considering the design-dependent behavior of the actuating loads. We use the Darcy law with the conceptualized drainage term to model the design-dependent nature of the applied pressure loads. The standard finite element is employed to evaluate the consistent nodal loads from the obtained pressure field. The robust topology optimization formulation is used with the multi-criteria objective. The success of the presented approach is demonstrated by designing a member/soft robot of the pneumatic networks (PneuNets). The optimized member is combined in several series to get different PneuNets. Their CAD models are generated, and they are studied with high-pressure loads in a commercial software. Depending upon the number of members in the PneuNets, different output motions are noted.
description: 13 pages, 6 Figures
Reducing the numerical effort of finite-temperature density matrix renormalization group transport calculations
Creators: name: Karrasch, C.
name: Bardarson, J. H.
name: Moore, J. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Finite-temperature transport properties of one-dimensional systems can be studied using the time dependent density matrix renormalization group via the introduction of auxiliary degrees of freedom which purify the thermal statistical operator. We demonstrate how the numerical effort of such calculations is reduced when the physical time evolution is augmented by an additional time evolution within the auxiliary Hilbert space. Specifically, we explore a variety of integrable and non-integrable, gapless and gapped models at temperatures ranging from T=infty down to T/bandwidth=0.05 and study both (i) linear response where (heat and charge) transport coefficients are determined by the current-current correlation function and (ii) non-equilibrium driven by arbitrary large temperature gradients. The modified DMRG algorithm removes an 'artificial' build-up of entanglement between the auxiliary and physical degrees of freedom. Thus, longer time scales can be reached.
Wolters, Reinhard: Die Römer in Germanien
Creators: name: Wölke, Hnasjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Wolters, Reinhard: Die Römer in Germanien. München: Beck 2000. 128 S. (Beck Wissen in der Beck‘schen Reihe. 2141; ISBN 3-404-44736-8).
description: Forum Classicum, Nr. 1 (2001): Forum Classicum
NS Three-form Flux Deformation for the Critical Non-Abelian Vortex String
Creators: name: Yung, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been shown that non-Abelian solitonic vortex string supported in four-dimensional (4D) N = 2 supersymmetric QCD (SQCD) with the U(2) gauge group and $N_f = 4$ quark flavors becomes a critical superstring. This string propagates in the ten-dimensional space formed by a product of the flat 4D space and an internal space given by a Calabi-Yau noncompact threefold, namely, the conifold. The spectrum of low lying closed string states in the associated type IIA string theory was found and interpreted as a spectrum of hadrons in 4D N = 2 SQCD. In particular, the lowest string state appears to be a massless BPS baryon associated with the deformation of the complex structure modulus $b$ of the conifold. In the previous work the deformation of the 10-dimensional background with nonzero Neveu-Schwarz 3-form flux was considered and interpreted as a switching on a particular choice of quark masses in 4D SQCD. This deformation was studied to the leading order at small 3-form flux. In this paper we study the back reaction of the nonzero 3-form flux on the metric and the dilaton introducing ansatz with several warp factors and solving gravity equations of motion. We show that 3-form flux produces a potential for the conifold complex structure modulus $b$, which leads to the runaway vacuum. At the runaway vacuum warp factors disappear, while the conifold degenerates. In 4D SQCD we relate this to the flow to the U(1) gauge theory upon switching on quark masses and decoupling of two flavors.
description: 35 pages, no figures. arXiv admin note: substantial text overlap with arXiv:2105.02645
Duden. Das große Wörterbuch der deutschen Sprache in zehn Bänden. 3., völlig neub. Und erw. Aufl. Hrsg. v. Wissenschaftlichen Rat der Dudenredaktion
Creators: name: Werner, Jürgen
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Duden. Das große Wörterbuch der deutschen Sprache in zehn Bänden. 3., völlig neub. Und erw. Aufl. Hrsg. v. Wissenschaftlichen Rat der Dudenredaktion. Mannheim usw., Dudenverlag. 1999. 4800 S. Gr. 8°. (ISBN 3-411-04733-X).
description: Forum Classicum, Nr. 1 (2002): Forum Classicum
The Ultimate Fate of Cosmic Rays from Galaxies and their Role in the Intergalactic Medium
Creators: name: Lacki, Brian C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The majority of cosmic rays (CRs) generated by star-forming galaxies escape them and enter the intergalactic medium (IGM). Galactic wind termination shocks might also accelerate CRs. I show that the mean pressure of these CRs can reach to within an order of magnitude of the mean Lyman-alpha forest thermal pressure. At z >~ 1, their pressure may have even been dominant. I also demonstrate that, whichever IGM phase the CRs reside in, they contribute significantly to its pressure if its temperature is ~$10^4$ K, as long as pionic and Coulomb losses are negligible. Where CRs end up depends on the structure and strength of intergalactic magnetic fields. I argue that CRs end up at least 30 kpc from their progenitor galaxies. CRs may self-confine in the IGM to the sound speed, generating >~ $10^{-13}$ G magnetic fields. These considerations imply the existence and importance of a nonthermal IGM.
description: Published in MNRAS Letters; 5 pages, 1 figure
Voluntariness of Consent to Research: A Preliminary Empirical Investigation
Creators: name: Appelbaum, Paul S.
name: Lidz, Charles W.
name: Klitzman, Robert L.
Publisher: name: Columbia University
Year: 2009
Subjects: Clinical medicine--Research
Medical ethics
Research--Moral and ethical aspects

description: Providing informed consent to participate in research—a primary pillar of the ethical conduct of research—is based on three components: adequate information, a competent decision-maker, and a voluntary decision process . Techniques have been developed to assess the content and adequacy of information disclosures during the informed consent process and the decisional capacity of people recruited to participate in research. But voluntariness of consent has been more resistant to investigation, leaving policy-makers with little guidance for their efforts to insure that prospective research subjects are able to exercise meaningful choice about whether to participate in research. Given the absence of accepted measures of voluntariness in research settings and the limited amount of available data, our study was designed to develop a more comprehensive approach to assessing voluntariness of consent to research and to generate preliminary data on the extent and correlates of limitations on voluntariness across diverse areas of research.