cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Low-Luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
Creators: name: Bentz, Misty C.
name: Denney, Kelly D.
name: Grier, Catherine J.
name: Barth, Aaron J.
name: Peterson, Bradley M.
name: Vestergaard, Marianne
name: Bennert, Vardha N.
name: Canalizo, Gabriela
name: De Rosa, Gisella
name: Filippenko, Alexei V.
name: Gates, Elinor L.
name: Greene, Jenny E.
name: Li, Weidong
name: Malkan, Matthew A.
name: Pogge, Richard W.
name: Stern, Daniel
name: Treu, Tommaso
name: Woo, Jong-Hak
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an updated and revised analysis of the relationship between the Hbeta broad-line region (BLR) radius and the luminosity of the active galactic nucleus (AGN). Specifically, we have carried out two-dimensional surface brightness decompositions of the host galaxies of 9 new AGNs imaged with the Hubble Space Telescope Wide Field Camera 3. The surface brightness decompositions allow us to create "AGN-free" images of the galaxies, from which we measure the starlight contribution to the optical luminosity measured through the ground-based spectroscopic aperture. We also incorporate 20 new reverberation-mapping measurements of the Hbeta time lag, which is assumed to yield the average Hbeta BLR radius. The final sample includes 41 AGNs covering four orders of magnitude in luminosity. The additions and updates incorporated here primarily affect the low-luminosity end of the R-L relationship. The best fit to the relationship using a Bayesian analysis finds a slope of alpha = 0.533 (+0.035/-0.033), consistent with previous work and with simple photoionization arguments. Only two AGNs appear to be outliers from the relationship, but both of them have monitoring light curves that raise doubt regarding the accuracy of their reported time lags. The scatter around the relationship is found to be 0.19(+/-0.02) dex, but would be decreased to 0.13 dex by the removal of these two suspect measurements. A large fraction of the remaining scatter in the relationship is likely due to the inaccurate distances to the AGN host galaxies. Our results help support the possibility that the R-L relationship could potentially be used to turn the BLRs of AGNs into standardizable candles. This would allow the cosmological expansion of the Universe to be probed by a separate population of objects, and over a larger range of redshifts.
description: Accepted for publication in ApJ; 25 pages, 11 figures; PDF version with all figures (5.1MB) can be downloaded from http://www.chara.gsu.edu/~bentz/rl2013.pdf
Groundwater N2O emission factors of nitrate-contaminated aquifers as derived from denitrification progress and N2O accumulation
Creators: name: Weymann, D.
name: Well, R.
name: Flessa, H.
name: Heide, Carolin Von Der
name: Deurer, M.
name: Meyer, K.
name: Konrad, C.
name: Walther, W.
Publisher: name: Göttingen : Copernicus GmbH
Year: 2008
Subjects: subject: nitrous-oxide emission
subject: atlantic coastal-plain
subject: sandy aquifer
subject: excess air
subject: water
subject: soil
subject: solubility
subject: seawater
subject: fate
subject: dynamics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: We investigated the dynamics of denitrification and nitrous oxide (N2O) accumulation in 4 nitrate (NO3-) contaminated denitrifying sand and gravel aquifers of northern Germany (Fuhrberg, Sulingen, Thulsfelde and Gottingen) to quantify their potential N2O emission and to evaluate existing concepts of N2O emission factors. Excess N-2 - N-2 produced by denitrification - was determined by using the argon (Ar) concentration in groundwater as a natural inert tracer, assuming that this noble gas functions as a stable component and does not change during denitrification. Furthermore, initial NO3- concentrations (NO3- that enters the groundwater) were derived from excess N-2 and actual NO3- concentrations in groundwater in order to determine potential indirect N2O emissions as a function of the N input. Median concentrations of N2O and excess N-2 ranged from 3 to 89 mu g N L-1 and from 3 to 10 mg N L-1, respectively. Reaction progress (RP) of denitrification was determined as the ratio between products (N2O-N + excess N-2) and starting material (initial NO3- concentration) of the process, characterizing the different stages of denitrification. N2O concentrations were lowest at RP close to 0 and RP close to 1 but relatively high at a RP between 0.2 and 0.6. For the first time, we report groundwater N2O emission factors consisting of the ratio between N2O-N and initial NO3--N concentrations (EF1). In addition, we determined a groundwater emission factor (EF2) using a previous concept consisting of the ratio between N2O-N and actual NO3--N concentrations. Depending on RP, EF(1) resulted in smaller values compared to EF(2), demonstrating (i) the relevance of NO3- consumption and consequently (ii) the need to take initial NO3--N concentrations into account. In general, both evaluated emission factors were highly variable within and among the aquifers. The site medians ranged between 0.00043-0.00438 for EF(1) and 0.00092-0.01801 for EF(2), respectively. For the aquifers of Fuhrberg and Sulingen, we found EF(1) median values which are close to the 2006 IPCC default value of 0.0025. In contrast, we determined significant lower EF values for the aquifers of Thulsfelde and Gottingen. Summing the results up, our study supports the substantial downward revision of the IPCC default EF5-g from 0.015 (1997) to 0.0025 (2006).
title: Datenraum Wald: Konzeption und Durchführung eines Proof of Concept
Creators: name: Schabarum, Maximilian
name: Hünemohr, Holger
name: Beckmann, Markus
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2024
Subjects: subject: Datenraum
subject: Wald und Forst
subject: Luft- und Satellitenbilder
subject: Datenintegration
subject: Prozessketten
subject: Eclipse Dataspace Components
subject: Open Source Architektur

description: Für einen souveränen, standardisierten Datenaustausch wird seit 2015 intensiv am Konzept der Datenräume gearbeitet. In diesem Beitrag wird das Konzept der Datenräume vorgestellt, der Aufbau erläutert und auf das Themengebiet Wald übertragen. Für den entwickelten Datenraum Wald werden die Gestaltungs- und Designentscheidungen sowie die Open Source IT-Architektur beschrieben. Der konzipierte Datenraum Wald wurde in Zusammenarbeit mit der Nordwestdeutschen Forstlichen Versuchsanstalt, Hessen-Forst sowie der Hessischen Zentrale für Datenverarbeitung (HZD) im Rahmen eines Proof of Concepts für die Bearbeitung und den Austausch von Satellitenbilder-Daten in einer minimalen Version aufgebaut, erprobt und evaluiert.
title: Investigation of мicrocreep of construckional materials at reduced temperature
Creators: name: Garanikov, V.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The paper present the results of microcreep at a temperature of -50°С. The tests were carried out on solid cylindrical samples with a threaded head on alloys Amg6, 01570, A1-19 and tubular samples for metal composite A1-B. The tests were carried out on a kinematic machine FPZ-100/1 in the device for deep cooling.
title: Improving the quality of high-quality billets through the use of electromagnetic stirring of metal
Creators: name: Kerimov, R.I.
name: Bayramov, A.T.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article discusses the issues of improving the quality of high-quality billets of electric steel through the use of electromagnetic mixing of liquid metal. A scheme of an electromagnetic stirrer mold for casting varietal billets is proposed. The distribution of the magnetic induction along the length of the mold is studied - the electromagnetic is mixed in its pointed section. At various parameters mixed investigated the rate of the melted surface. The influence of the nominal mixing current on the size of the subcortical bladder, the maximum depth of its occurrence and the number of surface bladder has been determined.
Stacked reverberation lags at high redshift
Creators: name: Fine, S.
name: Shanks, T.
name: Green, P.
name: Kelly, B. C.
name: Croom, S. M.
name: Webster, R. L.
name: Berger, E.
name: Chornock, R.
name: Burgett, W. S.
name: Chambers, K. C.
name: Kaise, N.
name: Price, P. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Over the past 20years reverberation mapping has proved one of the most successful techniques for studying the local (<1pc) environment of super-massive black holes that drive active galactic nuclei. Key successes of reverberation mapping have been direct black hole mass estimates, the radius-luminosity relation for the Hbeta line and the calibration of single-epoch mass estimators commonly employed up to z~7. However, observing constraints mean that few studies have been successful at z>0.1, or for the more-luminous quasars that make up the majority of current spectroscopic samples, or for the rest-frame ultra-violet emission lines available in optical spectra of z>0.5 objects. Previously we described a technique for stacking cross correlations to obtain reverberation mapping results at high z. Here we present the first results from a campaign designed for this purpose. We construct stacked cross-correlation functions for the CIV and MgII lines and find a clear peak in both. We find the peak in the MgII correlation is at longer lags than CIV consistent with previous results at low redshift. For the CIV sample we are able to bin by luminosity and find evidence for increasing lags for more-luminous objects. This CIV radius-luminosity relation is consistent with previous studies but with a fraction of the observational cost.
description: 5 pages, 5 figures, accepted for publication in MNRAS letters
title: Study of the influence of machining strategies on surface roughness when milling spherocylindrical tool
Creators: name: Fedotov, D.I.
name: Gimadeev, M.R.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article presents studies of the influence of processing strategies on the roughness of curved surfaces when milling with a spherical end tool. Comparative analysis of the roughness of the obtained surfaces shows the advantages of the strategy «in the radial direction from the bottom up» in the parameters Ra and Rz regulated by GOST R ISO 4287-2014.
title: Digitale Kompetenzen in der öffentlichen Verwaltung: Ein Überblick über Anforderungen an Mitarbeitende und bestehende Maßnahmen
Creators: name: Bellmer, Ariane
name: Becker, Till
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2024
Subjects: subject: Digitale Kompetenzen
subject: Öffentliche Verwaltung
subject: Digitaler Wandel
subject: DigiComp
subject: Weiterbildung
subject: Stellenanzeigen

description: Diese Arbeit betrachtet die Fragestellung, welche digitalen Kompetenzen die Mitarbeitenden der öffentlichen Verwaltung benötigen, um den digitalen Wandel gestalten zu können, und welche Maßnahmen hierfür bereits ergriffen wurden. Zu diesem Zweck wurden Interviews mit Mitarbeitenden der öffentlichen Verwaltung in unterschiedlichen Positionen durchgeführt. Weiterhin wurden Stellenanzeigen des Bundesland Bremen ausgewertet und mit einer Studie verglichen, die Ausschreibungen aus NRW und dem Bund zu digitalen Kompetenzen analysiert. Des Weiteren wurden
Interviews mit Leitungen und Mitarbeitenden aus Projekten in der öffentlichen Verwaltung geführt, die darauf abzielen, dem Bestandspersonal und auch den künftigen Mitarbeitenden im öffentlichen Dienst digitale Kompetenzen zu vermitteln. Alle Interviews wurden im Hinblick auf die im DigComp Framework genannten digitalen Kompetenzen bezüglich ihrer Nennung als relevant und/oder fehlend ausgewertet. Aus der Häufigkeit der Nennung wird auf die am dringendsten benötigten Kompetenzen für den digitalen Wandel geschlossen.
title: Optimization of the maintenance system of potentially hazardous machinery
Creators: name: Sugak, E.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: Discusses how to define a probability the ready state when different combinations of the parameters of the maintenance system for steady and neustanovivshegosja modes of operation. The obtained solutions are able to solve the technical condition management tasks, optimizing the reliability and safety of potentially hazardous industrial sites.
title: Tool trajectory approximation in multi-axis milling process
Creators: name: Surkov, O.S.
name: Yakunyashin, K.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The proposed article presents theoretical and practical study of influence of tool trajectory approximation parameters on the various accuracy characteristics of machined parts. The results of experimental studies on the effect of type and accuracy of approximation on the quality of the surface layer are given. A comparison of spline and linear trajectory approximation type is presented.
title: The device for hydromechanical mandrelliing of especially lengthy deep qualitative openings of small diameter
Creators: name: Batinov, I.V.
name: Gromov, A.N.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: In work the description of the device for a mandrelling of deep openings of especially lengthy pipes based on a method of a hydromechanical mandrelling is given. The device contains a mandrell-punch, front and back support with the channels executed in them for supply of lubricant under high pressure in a deformation zone.
title: Influence of the tool path approximation method on the distribution of forces during milling
Creators: name: Savelyev, K.E.
name: Yakunyashin, K.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article describes the influence of the method of setting the movement on the process of machining. Finite element calculations were carried out on the effect of the type of approximation on cutting forces.
Neuartige Randintegralmethode zur Berechnung der Portinduktivitäten in planparallelen Plattenstrukturen
Creators: name: Friedrich, Matthias
name: Bednarz, Christian
name: Leone, Marco
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Leiterplatte
subject: Portinduktivität
subject: Berechnung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Die numerische, analytische sowie messtechnische Analyse von planparallelen, leitenden Strukturen ist seit vielen Jahren für die Analyse und EMV-Optimierung auf Leiterplattenebene unverzichtbar [1–4]. Typische Beispiele sind hierbei Motherboard-Subboard-Anordnungen, Kühlkörper sowie die Versorgungslagen (Power-Bus, Electromagnetic Bandgap) auf MultilayerLeiterplatten. Für viele praktische Anwendungen genügt eine quasistatische Betrachtung der untersuchten Struktur [3–11]. Dazu können aus den quasistatischen Portinduktivitäten für die jeweiligen Anwendungen (Abstrahlung, EBG-Filter usw.) einfache Ersatzschaltbilder abgeleitet werden. Die einfachen Modelle auf der Basis von konzentrierten Bauelementen ermöglichen hierbei ein sehr gutes physikalisches Verständnis des elektromagnetischen Verhaltens der Struktur. Dies erlaubt eine zielgerichtete Optimierung sowie die Ableitung von effektiven Design-Rules. Weiterhin wurde in [6] gezeigt, dass die quasistatischen Portinduktivitäten zur Beschleunigung eines breitbandigen Foster-Ersatzschaltbildes verwendet werden können. Für die Betrachtung beliebig berandeter Strukturen muss zur Berechnung dieser Portinduktivitäten auf numerische Lösungsmethoden zurückgegriffen werden. Dafür wurden in der Literatur bisher nur differentielle Verfahren wie FEM [7] oder FDM [6, 12] genutzt. Diese benötigen jedoch die Implementierung komplexer Vernetzungsalgorithmen. Als Alternative wird in diesem Paper die Induktivitätsberechnung über eine Randintegralgleichung (Boundary Element Methode, BEM) vorgestellt [5]. Aufgrund der simplen Randvernetzung ist diese sehr einfach zu implementieren, wobei sämtliche Elemente der Systemmatrix analytisch berechnet werden können, was die Effizienz des Verfahrens noch zusätzlich erhöht.
Dynamics of the sub-Ohmic spin-boson model: a time-dependent variational study
Creators: name: Wu, Ning
name: Duan, Liwei
name: Li, Xin
name: Zhao, Yang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Dirac-Frenkel time-dependent variation is employed to probe the dynamics of the zero temperature sub-Ohmic spin-boson model with strong friction utilizing the Davydov D1 ansatz. It is shown that initial conditions of the phonon bath have considerable influence on the dynamics. Counterintuitively, even in the very strong coupling regime, quantum coherence features still manage to survive under the polarized bath initial condition, while such features are absent under the factorized bath initial condition. In addition, a coherent-incoherent transition is found at a critical coupling strength alpha ~ 0.1 for s=0.25 under the factorized bath initial condition. We quantify how faithfully our ansatz follows the Schrödinger equation, finding that the time-dependent variational approach is robust for strong dissipation and deep sub-Ohmic baths (s<<1).
description: 8 pages, 6 figures
Optimising Daylight and Ventilation Performance: A Building Envelope Design Methodology
Creators: name: Riza, Rana
name: Phipps, Robyn
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 3301
subject: Architecture
subject: FOS: Civil engineering
classificationCode: 4005
subject: Civil engineering
classificationCode: 3302
subject: Building

description: No description supplied
Fluorination Effects on the Structural Stability and Electronic Properties of sp3 Type Silicon Nanotubes
Creators: name: Hever, Alon
name: Bernstein, Jonathan
name: Hod, Oded
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A density functional theory study of the structural and electronic properties and relative stability of fluorinated sp3 silicon nanotubes and their corresponding silicon nanowires built along various crystallographic orientations is presented. The structural stability is found to increase linearly with the fluorine surface coverage and for coverages exceeding 25% the tubular structures are predicted to be more stable than their wire-like counterparts. The bandgaps of the fully fluorinated systems are lower than those of their fully hydrogenated counterparts by up to 0.79 eV for systems having a relatively low silicon molar fraction. As the silicon molar fraction increases these differences appear to reduce. For mixed fluorination and hydrogenation surface decoration schemes the bandgaps usually lie between the values of the fully hydrogenated and fully fluorinated systems. Furthermore, the bandgap values of the silicon nanotubes are found to be more sensitive to the fluorine surface coverage than those of the silicon nanowires. These results indicate that surface functionalization may be used to control the stability of narrow quasi-one-dimensional silicon nanostructures and opens the way towards chemical tailoring of their electronic properties.
description: 17 pages, 6 figures
Neue EMV-Richtlinie & Funkanlagen-Richtlinie
Creators: name: Kohling, Anton
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Funktechnik
subject: R&TTE Direktive
subject: RED
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Nachdem sich auf der EMV 2014 der Bericht über die Neuausgaben noch spekulativ auf die Entwürfe der beiden Richtlinien beziehen musste, stehen wir nun unmittelbar vor dem Ablauf der Übergangsfristen bzw. dem Stichtag. Die Gültigkeit der noch bestehenden EMV-Richtlinie [1] und 7 weiter Richtlinien, darunter auch die Niederspannungsrichtlinie endet am 20 April 2016. Aus der R&TTE-Richtlinie wurde die Funkanlagen-Richtlinie (RE) [2]. Die Gültigkeit der R&TTE Richtlinie endet am 13. Juni 2016 mit einer Übergangsfrist von einem Jahr. Nach Ablauf der Übergangsfristen bzw. zum Stichtag müssen alle EU-Konformitätserklärungen auf die neuen Richtlinien umgestellt sein und der Forderung an die Ausstellung nur einer EU-Konformitätserklärung, die alle relevanten Richtlinien beinhaltet, Folge geleistet werden. Sie wird in die Sprache bzw. Sprachen übersetzt, die von dem Mitgliedstaat vorgeschrieben wird/werden, in dem das Gerät in Verkehr gebracht wird bzw. auf dessen Markt das Gerät bereitgestellt wird.
Two-dimensional simulations of temperature and current-density distribution in electromigrated structures
Creators: name: Kießig, Birgit
name: Löhneysen, Hilbert v.
name: Schäfer, Roland
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the application of a feedback-controlled electromigration technique for the formation of nanometer-sized gaps in mesoscopic gold wires and rings. The effect of current density and temperature, linked via Joule heating, on the resulting gap size is investigated. Experimentally, a good thermal coupling to the substrate turned out to be crucial to reach electrode spacings below 10 nm and to avoid overall melting of the nanostructures. This finding is supported by numerical calculations of the current-density and temperature profiles for structure layouts subjected to electromigration. The numerical method can be used for optimizing the layout so as to predetermine the location where electromigation leads to the formation of a gap.
description: 9 pages, 6 figures
Η Μελέτη της Ψυχολογίας των Επενδυτών κατά την Πανδημία Covid-19
Creators: name: Κατερτζή, Ειρήνη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: subject: Συμπεριφορική Χρηματοικονομική
subject: Ψυχολογία
subject: Χρηματοπιστωτική Αγορά
subject: Covid-19
subject: Επενδυτική Συμπεριφορά
subject: Behavioral Finance
subject: Psychology
subject: FOS: Psychology
subject: Financial Market
subject: Investment Behavior

description: Η αδυναμίας της παραδοσιακής Χρηματοοικονομικής Θεωρίας να εξηγήσει τις επενδυτικές επιλογές συμπεριλαμβάνοντας την ψυχολογία των επενδυτών, οδήγησε στη δημιουργία του κλάδου της Συμπεριφορικής Χρηματοοικονομικής. Στην παρούσα διπλωματική εργασία θα γίνει μελέτη της ψυχολογίας των επενδυτών κατά τη διάρκεια της πανδημίας Covid-19 καθώς και διερεύνηση των παραγόντων που επηρεάζουν την συμπεριφορά τους, σύμφωνα με τη θεωρία της Συμπεριφορικής Χρηματοοικονομικής. Aκόμη, θα διερευνηθούν τα συναισθηματικά σφάλματα που επηρεάζουν τους επενδυτές, όταν καλούνται να λάβουν μια απόφαση και θα γίνει ανάλυση του ρόλου των μέσων κοινωνικής δικτύωσης και της επίδρασή τους στη συμπεριφορά των επενδυτών σε περίοδο κρίση, όπως είναι η πανδημία Covid-19. Η εμπειρική προσέγγισή της, εστιάζει στη ψυχολογία και την συμπεριφορά των Ελλήνων επενδυτών κατά τη διάρκεια της πανδημίας, η οποία βρίσκεται σε εξέλιξη έως και σήμερα. Η έρευνα πραγματοποιήθηκε μέσω ανώνυμου ηλεκτρονικού ερωτηματολογίου που διανεμήθηκε σε 125 ιδιώτες επενδυτές. Τα συμπεράσματα που εξάγονται από την συγκεκριμένη έρευνα, αποτελούν τεκμήριο της υψίστης σημασίας της ψυχολογίας των επενδυτών στην πορεία των χρηματοπιστωτικών αγορών σε περιόδους έκτακτων αναγκών, όπως είναι μια πανδημία.
description: The inability of traditional Financial Theory to explain investment choices, including investors’ psychology has led to the emergence of the Behavioral Finance. In this dissertation, we will study the psychology of investors during the Covid-19 pandemic, and we will investigate the factors that influence their behavior, based on the theory of Behavioral Finance. We will also explore the behavioral biases that affect investors when they should make a decision and we analyze the role of social media and their impact on investors’ behavior during crisis periods, such as the Covid-19 pandemic. The empirical approach focuses on the psychology and behavior of Greek investors during the pandemic, which is ongoing until today. The survey was conducted through an anonymous electronic questionnaire distributed to 125 private investors. The conclusions drawn from this research are evidence of the paramount importance of investors’ psychology in financial markets in times of emergency such as a pandemic.
Untersuchungen an Smart Metern mit G3-Kommunikation
Creators: name: Malek, Mararethe
name: Ketel, Daniel
name: Hirsch, Holger
name: Trautmann, Mike
name: Ponzelar, Sebastian
name: Koch, Michael
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Intelligenter Zähler
subject: G3-PLC
subject: Elektrizitätszähler
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Bei Smart Metern handelt es sich um Energieverbrauchszähler, welche die verbrauchte Energie zur tatsächlichen Nutzungszeit erfassen und mithilfe einer Kommunikationsanbindung an die Energieversorger und die Verbraucher übertragen. Dies dient einerseits dazu den Versorgungsunternehmen die schwer vorhersehbare dezentrale Energieeinspeisung, durch zum Beispiel Photovoltaikoder Windkraftanlagen, sichtbar zu machen, andererseits Spitzenlasten durch eine Tarifsteuerung zu senken. Die Daten können zum Beispiel via Glasfaser, Funk oder Power Line Communication (PLC) übertragen werden. Die powerline-basierte Datenübertragung als Kommunikationsvariante bietet den Vorteil das bereits vorhandene Energienetz zu nutzen und somit eine einfache und kostengünstige Datenübertagung sowohl für die Verbraucher als auch für die Erzeuger zu schaffen. Derzeit nutzen Smart Meter zur Kommunikation oft den Frequenzbereich zwischen 3 kHz und 148,5 kHz, die sogenannten CENELEC-Bänder (nach EN 50065-1 [1]). Die Kommunikation kann aber auch mit Hilfe des G3-Standards in dem Frequenzbereich zwischen 150 kHz und 500 kHz erfolgen. Dabei handelt es sich um ein offenes Protokoll für Smart Grids, das auf dem orthogonalen Frequenzmultiplexverfahren (OFDM) basiert. Voraussetzung für diese Technik ist, dass Zähler mittels G3-PLC in diesem Frequenzbereich kommunizieren können, ohne dass hierdurch die Energiezählung gestört wird. Zudem dürfen andererseits die netzseitigen Störer in diesem Frequenzbereich weder die Energiezählung noch die Kommunikation beeinträchtigen.
The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. II. M66 and M96 in the Leo I Group
Creators: name: Lee, Myung Gyoon
name: Jang, In Sung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: M66 and M96 in the Leo I Group are nearby spiral galaxies hosting Type Ia Supernovae (SNe Ia). We estimate the distances to these galaxies from the luminosity of the tip of the red giant branch (TRGB). We obtain $VI$ photometry of resolved stars in these galaxies from $F555W$ and $F814W$ images in the {\it Hubble Space Telescope} archive. From the luminosity function of these red giants we find the TRGB $I$-band magnitude to be $I_{\rm TRGB}=26.20\pm0.03$ for M66 and $26.21\pm0.03$ for M96. These values yield distance modulus $(m-M)_0=30.12\pm0.03 ({\rm random})\pm0.12 ({\rm systematic})$ for M66 and $(m-M)_0=30.15\pm0.03 ({\rm random})\pm0.12 ({\rm systematic})$ for M96. These results show that they are indeed the members of the same group. With these results we derive absolute maximum magnitudes of two SNe (SN 1989B in M66 and SN 1998bu in M96). $V$-band magnitudes of these SNe Ia are $\sim$0.2 mag fainter than SN 2011fe in M101, the nearest recent SN Ia. We also derive near-infrared magnitudes for SN 1998bu. Optical magnitudes of three SNe Ia (SN 1989B, SN 1998bu, and SN 2011fe) based on TRGB analysis yield a Hubble constant, $H_0=67.6\pm1.5 ({\rm random})\pm 3.7({\rm systematic})$ \kmsMpc. This value is similar to the values derived from recent WMAP9 results, $H_0=69.32\pm0.80$ \kmsMpc. % and from Planck results, $H_0=67.3\pm1.2$ \kmsMpc, but smaller than other recent determinations based on Cepheid calibration for SNe Ia luminosity, $H_0 = 74 \pm3$ km s$^{-1}$ Mpc$^{-1}$.
description: 10 pages, 4 figures, 8 tables, accepted for publication in ApJ
Building a searchable database of OLS projects
Creators: name: Maineri, Angelica Maria
Publisher: name: Zenodo
Year: 2023

description: This is the presentation I prepared for the OLS-7 graduation call. Open Life Science - OLS is a mentorship programme to learn more about Open Science and Open Leadership, and mentees carry out individual or group projects. With over 200 projects, the list is now very rich yet also difficult to navigate. The aim of my project is to build a searchable database of OLS projects, for future, current and past OLS participants. Thanks to my database, it will be possible to browse all projects from one page, filter them based on keywords and/or project members, and track the projects progress and outputs. If you have ideas or comments, please open an issue or reach out to Angelica Maineri The prototype of the database can be seen at https://angelicamaineri.github.io/OLS-project-database/
description: I am really grateful to Lena Karvovskaya, an inspiring mentor, and Bérénice Batut, a skilled expert, as they helped me throughout the project.
Bernini: O Êxtase de Santa Teresa
Creators: name: Gil, Francisco Baptista
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 360102
subject: Art history

description: O Êxtase de Santa Teresa é considerado por muitos como o apogeu da obra de Bernini e é notável pelas qualidades estéticas e rigor nos mais ínfimos detalhes. A obra é muitas vezes descrita como obra de arte total, pela incorporação de uma grande diversidade de elementos visuais: escultura, pintura e efeitos de iluminação, todos apresentados num cenário teatral.
Die spezifische Wärme des flüssigen Schwefels
Creators: name: Braune, H.
name: Möller, O.
Publisher: name: Berlin, Boston : De Gruyter
Year: 1954
Subjects: subject: Kalorimeter
subject: Schwefel
subject: spezifischen Wärme
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Mit Hilfe eines adiabatischen Kalorimeters wurden erstmals die wahren spezifischen Wärmen des flüssigen Schwefels von 120 bis 420°C gemessen; aus den Ergebnissen wurden die Wärmeinhalte berechnet, die mit früheren Angaben verglichen wurden. Der Temperaturverlauf der spezifischen Wärme läßt sich mit großer Wahrscheinlichkeit nicht auf Grund der Annahme eines Gleichgewichts Sλ ⇄ Sμ deuten, sondern man wird wohl Gebrauch machen müssen von der durch den Viskositätsverlauf nahegelegten Hypothese, daß im flüssigen Schwefel Polymerisation eintritt, wobei Menge und Länge der Ketten eine Funktion der Temperatur sind.
Populus alba L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. alba L. Cat. 380. Bis 2536m: Stellisee bei Zermatt (Thellung 1922). Andere hohe Fundorte sind: Gemmi, nahe der Passhöhe,2300m (Oberson1940); Val des Dix,2250m (J.). Var. genuina (Schur) Godron Subvar. flavida (Schur) A. et G. - l: Collonges (Garns). Subvar. decumbens Gaudin - 2: Gegend von Branson-Fully (Garns). - 4: Eginental (Jaquet). Var. major Gaudin (var. gigantea G. F. W. Meyer) - 2: Gegend von Branson-Fully (Garns). Var. patula Gaudin - l: Salanfe (Coquoz); Outre-Rhone (Garns). - 2: Montagne de Fully (Garns); Saillon (idem). -4: Rappental (B. C.W.); Blmdental (B. C.W.); Gerental (B.C.W.). Var. coarctata (Ehrh.) Blytt - 2: Saillon (Garns). Var. prorepens (Koch) Ascherson - l: Dorenaz (Garns). - 2: An der Sarvaz bei Saillon (Garns). An diesen beiden Orten auch die f. fluitans Schröter (Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: The influence of composite coatings on the wear of carbide cutting tool
Creators: name: Mukhamadeev, V.R.
name: Mukhamadeev, I.R.
name: Balysheva, E.G.
name: Kiseleva, M.A.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The influence of composite coatings on the wear resistance of the cutting tool made of hard alloy VK8 is considered. Experimental studies have shown an increase in the wear resistance of the cutting tool with multilayer composite coatings in comparison with the base.
Untersuchungen zu TEM Hornantennen für Störfestigkeitsprüfungen im Nahbereich
Creators: name: Heinrich, Ralf
name: Hirsch, Holger
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Hornstrahler
subject: Störsicherheit
subject: Messtechnik
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Im Normentwurf der geplanten IEC 61000-4-39 [1] ist für den Bereich von 385 MHz bis 6 GHz der Einsatz von TEM Hornantennen vorgesehen. Im Rahmen der Arbeiten am Normentwurf wurden verschiedene Entwicklungsmuster von TEM Hornantennen entwickelt, um die technisch realisierbaren Parameter zu erforschen und zu erproben und um Erfahrungen zum Einsatz von TEM Hornantennen für die Störfestigkeitsprüfungen im Nahbereich zu gewinnen. Von besonderem Interesse waren dabei die Parameter Feldhomogenität, Frequenzabhängigkeit und der Vergleich mit anderen Antennen.
LEVIS Project D8.3 LEVIS Implementation Quality Guidelines
Creators: name: Instituto Tecnológico de Aragón
Publisher: name: Zenodo
Year: 2021

description: The LEVIS Implementation Quality Guidelines show how quality aspects are taken into account in all processes and activities within the LEVIS project as the interrelated quality processes – planning, assurance and control – that will have an impact on the project work from its start to its end. It includes aspects such as Quality Planning that refers to quality policies like meeting, deliverable or publication policies; Quality Assurance, that involves the establishment of Interim Management Reports and regular meetings; and an internal review process that supports the Quality Assurance of deliverables. Quality Assurance and Risk Management issues constitute a monitoring process that will run during the lifetime of the project in order to continuously evaluate the quality of the work and the deliverables as well as to assess technical and management risks.
Three-Prong Distribution of Massive Narrow QCD Jets
Creators: name: Field, Matan
name: Gur-Ari, Guy
name: Kosower, David A.
name: Mannelli, Lorenzo
name: Perez, Gilad
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the planar-flow distributions of narrow, highly boosted, massive QCD jets. Using the factorization properties of QCD in the collinear limit, we compute the planar-flow jet function from the one-to-three splitting function at tree-level. We derive the leading-log behavior of the jet function analytically. We also compare our semi-analytic jet function with parton-shower predictions using various generators.
description: 59 pages, 9 figures
Luminosity profiles and sizes of massive star clusters in NGC 7252
Creators: name: Bastian, Nate
name: Schweizer, Francois
name: Goudfrooij, Paul
name: Larsen, Soeren S.
name: Kissler-Patig, Markus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present Hubble Space Telescope (HST) Wide-Field Camera 3 (WFC3) images of the merger remnant NGC 7252. In particular, we focus on the surface brightness profiles and effective radii, Reff, of 36 young massive clusters (YMCs) within the galaxy. All the clusters have masses exceeding 10^5 Msun and are, despite the 64 Mpc distance to the galaxy, (partly) resolved on the HST images. Effective radii can be measured down to ~2.5 pc, and the largest clusters have Reff approaching 20 pc. The median Reff of our sample clusters is ~6-7 pc, which is larger than typical radii of YMCs (~2.5 pc). This could be due to our sample selection (only selecting resolved sources) or to an intrinsic mass--radius relation within the cluster population. We find at least three clusters that have power-law profiles of the Elson, Fall, & Freeman (1987, "EFF") type extending out to >150 pc. Among them are the two most massive clusters, W3 and W30, which have profiles that extend to at least 500 and 250 pc, respectively. Despite their extended profiles, the effective radii of the three clusters are 17.2, 12.6 and 9.1 pc for W3, W26 and W30, respectively. We compare these extended profiles with those of YMCs in the LMC (R136 in 30 Dor), the Antennae galaxies (Knot S) and in the nearby spiral galaxy NGC 6946. Extended profiles seem to be a somewhat common feature, even though many nearby YMCs show distinct truncations. A continuous distribution between these two extremes, i.e. truncated or extremely extended, is the most likely interpretation. We suggest that the presence or absence of an extended envelope in {\em very young clusters} may be due to the gas distribution of the proto-cluster giant molecular cloud, in particular if the proto-cluster core becomes distinct from the surrounding gas before star formation begins.
description: 12 pages, MNRAS in press
A long-term X-ray monitoring of the ultraluminous X-ray source NGC 5408 X-1 with Swift reveals the presence of dips but no orbital period
Creators: name: Grisé, Fabien
name: Kaaret, Philip
name: Corbel, Stéphane
name: Cseh, Dávid
name: Feng, Hua
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: NGC 5408 X-1 is a well-studied ultraluminous X-ray source (ULX) that has been seen to emit in X-rays persistently above the Eddington limit of a stellar-mass black hole for years. In this paper we report on the most extensive X-ray monitoring of a ULX, using more than four years of observations from the Swift satellite. We find that the 115 day periodicity reported by Strohmayer (2009) disappeared after only a few cycles, confirming the suspicion of Foster et al. (2010) that the periodicity is most likely super-orbital and not the orbital period of the system. We also report on a clear dipping behaviour of the source that may be related to a (super)-orbital phenomenon. All these features are reminiscent of Galactic X-ray binaries and strengthen their link with ULXs. Deeper observations of a dip could help resolve the ambiguity about the interpretation of the spectral components of ULXs.
description: 18 pages, 9 figures, accepted for publication in MNRAS
Recent scientific research on electrothermal metallurgical processes
Creators: name: Baake, Egbert
name: Shpenst, Vadim A.
Publisher: name: Saint-Petersburg : Saint-Petersburg Mining University
Year: 2019
Subjects: subject: Electromagnetic processing
subject: Electrotechnology
subject: Electrothermal processes
subject: Induction heating
subject: Induction melting
subject: Metallurgy
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: A wide range of industrial metallurgical heating and melting processes are carried out using electrothermal technologies. The application of electrothermal processes offers many advantages from technological, ecological and economical point of view. Although the technology level of the electro heating and melting installations and processes used in the industry today is very high, there are still potentials for improvement and optimization due to the increasing complexity of the applications and the strong requirements regarding the performance and quality of the products but also regarding the reduction of time and costs for the development of new processes and technologies. In this paper recent applications and future development trends for efficient heating and melting by electrothermal technologies in metallurgical processes are described along selected examples like induction heating for forging or rolling of billets, heat treatment of strips and plates, press-hardening processes, induction surface hardening of complex geometries, induction welding as well as induction melting processes.
IQTISODIY KOMPETENTLIK BOZOR SHAROITIDA MUVAFFAQIYATGA ERISHISHNING ASOSIY OMILI SIFATIDA
Creators: name: Usanov, Zafar
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada iqtisodiy kompetentlik bozor iqtisodiyoti sharoitida muvaffaqiyatga erishishning asosiy omili sifatida ko‘rib chiqiladi. Iqtisodiy bilim va ko‘nikmalarning qaror qabul qilish jarayonida, moliyaviy barqarorlikni ta'minlashda, raqobatbardoshlikni oshirishda va bozor holatini to‘g‘ri tushunishda qanday muhim ahamiyatga ega ekanligi tahlil qilinadi. Tadqiqot natijalari shuni ko‘rsatadiki, iqtisodiy kompetentlikning yuqori darajasi bozor o‘zgarishlariga tez moslashish va barqaror muvaffaqiyatga erishishda muhim rol o‘ynaydi.
Frustration-induced supersolids in the absence of intersite interactions
Creators: name: Mishra, Tapan
name: Greschner, Sebastian
name: Santos, Luis
Publisher: name: College Park, MD : American Physical Society
Year: 2015
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We discuss a mechanism for the realization of supersolids in lattices in the absence of intersite interactions that surprisingly works as well at unit filling. This mechanism, that we study for the case of the sawtooth lattice, is based on the existence of frustrated and unfrustrated plaquettes. For sufficiently large interactions and frustration the particles gather preferentially at unfrustrated plaquettes breaking spontaneously translational invariance, resulting in a supersolid. We show that for the sawtooth lattice the supersolid exists for a large region of parameters for densities above half filling. Our results open a feasible path for realizing supersolids in existing ultracold atomic gases in optical lattices without the need for long-range interactions. © 2015 American Physical Society.
Schnelle Simulation von Funkkoexistenz-Verhalten im 2,45-GHz-ISM-Band in großflächigen intralogistischen Szenarien
Creators: name: Haake, Kai
name: Gisch, Alexander
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Funkortung
subject: Datenübertragung
subject: Simulations-Software
subject: Ortungssystem
subject: Zeitverzögerung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Für eine extrem schnelle Simulation des Koexistenz-Verhaltens von Funkteilnehmern im 2,45-GHz-ISM-Band im Zusammenspiel mit einem Funkortungssystem in großflächigen intralogistischen Szenarien ist eine spezielle Simulations-Software entwickelt worden. Die Ergebnisse bieten Aussagen zu Zeitverzögerungen der WLAN-Datenübertragung und der Ortungsgenauigkeit von nanoLOC. Es kann den Funkteilnehmern des Ortungssystems ein Koexistenz-Verhalten über spezielle Algorithmen aufgeprägt werden. Diese Algorithmen können dann durch Analyse der Simulationsdaten bewertet und optimiert werden.
Supervised detection of bomb craters in historical aerial images using convolutional neural networks
Creators: name: Clermont, D.
name: Kruse, C.
name: Rottensteiner, F.
name: Heipke, C.
Publisher: name: Göttingen : Copernicus
Year: 2019
Subjects: subject: Aerial Wartime Images
subject: Bomb Craters
subject: Convolutional Neural Networks
subject: Object Detection
subject: Antennas
subject: Convolution
subject: Military operations
subject: Neural networks
subject: Object detection
subject: Remote sensing
subject: Aerial images
subject: Automatic Detection
subject: Blob detectors
subject: Class distributions
subject: Convolutional neural network
subject: Explosion hazards
subject: Loss functions
subject: Two-class classification problems
subject: Bombs (ordnance)
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The aftermath of the air strikes during World War II is still present today. Numerous bombs dropped by planes did not explode, still exist in the ground and pose a considerable explosion hazard. Tracking down these duds can be tackled by detecting bomb craters. The existence of a dud can be inferred from the existence of a crater. This work proposes a method for the automatic detection of bomb craters in aerial wartime images. First of all, crater candidates are extracted from an image using a blob detector. Based on given crater references, for every candidate it is checked whether it, in fact, represents a crater or not. Candidates from various aerial images are used to train, validate and test Convolutional Neural Networks (CNNs) in the context of a two-class classification problem. A loss function (controlling what the CNNs are learning) is adapted to the given task. The trained CNNs are then used for the classification of crater candidates. Our work focuses on the classification of crater candidates and we investigate if combining data from related domains is beneficial for the classification. We achieve a F1-score of up to 65.4% when classifying crater candidates with a realistic class distribution. © Authors 2019. CC BY 4.0 License.
The Chandra-COSMOS survey IV: X-ray spectra of the bright sample
Creators: name: Lanzuisi, G.
name: Civano, F.
name: Elvis, M.
name: Salvato, M.
name: Hasinger, G.
name: Vignali, C.
name: Zamorani, G.
name: Aldcroft, T.
name: Brusa, M.
name: Comastri, A.
name: Fiore, F.
name: Fruscione, A.
name: Gilli, R.
name: Ho, L. C.
name: Mainieri, V.
name: Merloni, A.
name: Siemiginowska, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the X-ray spectral analysis of the 390 brightest extragalactic sources in the Chandra-COSMOS catalog, showing at least 70 net counts in the 0.5-7 keV band. This sample has a 100% completeness in optical-IR identification, with 75% of the sample having a spectroscopic redshift and 25% a photometric redshift. Our analysis allows us to accurately determine the intrinsic absorption, the broad band continuum shape (Γ) and intrinsic L(2-10) distributions, with an accuracy better than 30% on the spectral parameters for 95% of the sample. The sample is equally divided in type-1 (49.7%) and type-2 AGN (48.7%) plus few passive galaxies at low z. We found a significant difference in the distribution of Γ of type-1 and type-2, with small intrinsic dispersion, a weak correlation of Γ with L(2-10) and a large population (15% of the sample) of high luminosity, highly obscured (QSO2) sources. The distribution of the X ray/Optical flux ratio (Log(FX /Fi)) for type-1 is narrow (0 < X/O < 1), while type-2 are spread up to X/O = 2. The X/O correlates well with the amount of X-ray obscuration. Finally, a small sample of Compton thick candidates and peculiar sources is presented. In the appendix we discuss the comparison between Chandra and XMM-Newton spectra for 280 sources in common. We found a small systematic difference, with XMM-Newton spectra that tend to have softer power-laws and lower obscuration.
description: 20 pages, 16 figures. Accepted for Pubblication in MNRAS, 2013 February 5