cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mindestlohn und Tariftreue im Landesvergaberecht der Freien Hansestadt Bremen
Creators: name: Klocke, Daniel
Publisher: name: Arbeitnehmerkammer Bremen
Year: 2021
Subjects: subject: Wirtschaftsrecht
subject: Tarifvertrag
subject: Mindestlohn
subject: 80

description: Die Tarifbindung ist auch im Land Bremen in den letzten Jahren gesunken. Nur noch 18 Prozent der Betriebe und 57 Prozent der Beschäftigten sind tarifgebunden. Die rückläufige Tarifbindung hat negative Auswirkungen für die Beschäftigten. So verdienen Vollzeitbeschäftigte im Land Bremen rund zehn Prozent weniger, wenn ihr Betrieb nicht tarifgebunden ist. Um die Tarifbindung wieder zu stärken, sollte auch die Landespolitik ihre Möglichkeiten zur Stärkung der Tarifbindung ausschöpfen. Wichtigster Ansatzpunkt wäre eine umfassende Tariftreuepflicht für Betriebe bei öffentlichen Aufträgen. Inwieweit dies rechtlich möglich ist, ist ein bundesweit vieldiskutiertes Thema. Daher hat die Arbeitnehmerkammer ein Rechtsgutachten in Auftrag gegeben. Das Gutachten kommt zu dem Ergebnis, dass eine umfassende Tariftreueregelung bei Bau- und Dienstleistungen möglich und rechtlich zulässig ist.
Poisson-Lie T-duals of the bi-Yang-Baxter models
Creators: name: Klimcik, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove the conjecture of Sfetsos, Siampos and Thompson that suitable analytic continuations of the Poisson-Lie T-duals of the bi-Yang-Baxter sigma models coincide with the recently introduced generalized lambda models. We then generalize this result by showing that the analytic continuation of a generic sigma model of "universal WZW-type" introduced by Tseytlin in 1993 is nothing but the Poisson-Lie T-dual of a generic Poisson-Lie symmetric sigma model introduced by Klimcik and Severa in 1995.
description: 15 pages, we present an additional result that the analytic continuation of a generic sigma model of "universal WZW-type" introduced by Tseytlin in 1993 is nothing but the Poisson-Lie T-dual of a generic Poisson-Lie symmetric sigma model introduced by Klimcik and Severa in 1995
Gut beraten, vielfältig fördern, Armut verhindern
Creators: name: Geraedts, Regine
Publisher: name: Arbeitnehmerkammer Bremen
Year: 2021
Subjects: subject: Erwerbslosigkeit
subject: Armut
subject: Förderung
subject: Beratung
subject: 360

description: spiegeln sich konjunkturelle Dellen, kleine und große Krisen, technologische Neuerungen, sich ändernde Qualifi kationsanforderungen und über allem ein Defi zit an sozialversicherter Arbeit. Von den Folgen des strukturellen Wandels sind am Ende Einzelne betroff en: Individuell führt Arbeitslosigkeit zu Einkommensverlusten, oft zur Entwertung der im Laufe des Arbeits lebens erreichten berufl ichen Erfahrungen und bei langer Dauer droht der soziale Ausschluss. Die vorliegende Studie zeigt, wie sich die Arbeitslosigkeit und ihre Folgen in das Sozialgefüge von Bremen und Bremerhaven eingeschrieben haben – von der Borgward-Pleite über die Werftenkrise bis zur aktuellen Corona- Pandemie. Sie skizziert zudem die arbeitsmarktpolitischen Herausforderungen der Zukunft und unterbreitet konkrete Vorschläge für eine nachhaltige Arbeitsmarktstrategie. Dabei geht es darum, Beschäftigung zu sichern, durch Investitionen in Aus- und Weiterbildung Ein- und Umstiege zu ermöglichen, Abstiege zu verhindern und denen sozialen Geleitschutz zu bieten, denen ein regionaler Arbeitsmarkt ohne ausreichende Beschäftigungsmöglichkeiten kaum mehr Chancen bietet.
Misaligned Disks in the Binary Protostar IRS 43
Creators: name: Brinch, Christian
name: Jørgensen, Jes K.
name: Hogerheijde, Michiel R.
name: Nelson, Richard P.
name: Gressel, Oliver
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent high angular resolution ($\sim$0.2") ALMA observations of the 1.1 mm continuum and of HCO+ J=3-2 and HCN J=3-2 gas towards the binary protostar IRS 43 reveal multiple Keplerian disks which are significantly misaligned ($\gt$ 60$^\circ$), both in inclination and position angle and also with respect to the binary orbital plane. Each stellar component has an associated circumstellar disk while the binary is surrounded by a circumbinary disk. Together with archival VLA measurements of the stellar positions over 25 years, and assuming a circular orbit, we use our continuum measurements to determine the binary separation, a = 74 $\pm$ 4 AU, and its inclination, i $\lt$ 30$^\circ$. The misalignment in this system suggests that turbulence has likely played a major role in the formation of IRS 43.
description: 7 pages, 4 figures
Andrena minutula
Creators: name: Pauly, Alain
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena minutula

description: Andrena minutula (Kirby, 1802)
 7.V.1979, 1♀, Streupas, lande, au sol; 7.V.1979, 1♀, boulaie, Vaccinium myrtillus; 22.VI-20.VII.1988, 16 ex, lisière, bac jaune; 22.VI-20.VII.1988, 12 ex, lande brûlée, bac jaune; 22.VI-20.VII.1988, 6 ex, boulaie, bac jaune; 22.VI-20.VII.1988, 11 ex, lande à bruyère, bac jaune; 24.VII.2004, 6♀, entrée lande, Apiaceae; 21.VII.2013, 1♀, lande, Campanula rotundifolia, 2♀, clairière, Apiaceae.
description: Published as part of Pauly, Alain, 2018, Les abeilles sauvages de la lande de Streupas (Hymenoptera: Apoidea), pp. 1-36 in Belgian Journal of Entomology 60 on page 14, DOI: 10.5281/zenodo.13619251
Rebar counting detection
Creators: name: Wang, Seunghyeon
Publisher: name: figshare
Year: 2023
Subjects: Architectural engineering
Deep learning
Image processing

description: A high-precision DJI Phantom 4 Pro drone was commissioned at five unique construction sites in South Korea during peak productivity hours. Construction supervisors manually controlled the drone, thus ensuring the capture of clearly visible images of the rebars. Representative samples from the original dataset are displayed in Figure 3. The drone's path was methodically guided in a vertical trajectory above each column, positioning it directly above the rebars at an estimated altitude of 1 to 2 meters. At each position, still images were captured with the columns nearly centred in each frame. To underscore the pragmatic viability of the proposed method, rebar images were sourced under authentic operational conditions, thus encapsulating the complexities and challenges that typify bustling construction sites. This dataset contained a diverse array of variations in factors such as illumination, scale, and perspective. Moreover, other construction equipment such as scaffolding, timber and moulding were also observed in the images. In total, 728 images of rebars with a resolution of 1,500 × 900 pixels were captured.
Studentisches Wohnen in Bremen : Zur Wohnsituation der Studentinnen und Studenten an der Universität Bremen 2014/15 im Vergleich zu 2009/10
Creators: name: Mossig, Ivo
name: Andreas, Verena
name: Kirschner, Kevin
name: Schrader, Jörn-Henning
name: Wienstroer, Jonas
Publisher: name: Universität Bremen
Year: 2015
Subjects: subject: Wohnsituation
subject: Studierende
subject: 300

description: Im folgenden Abschnitt werden zunächst die methodische Vorgehensweise der Untersuchung und die Zusammensetzung der Stichprobe dargelegt (Kapitel 2). Anschließend werden in Kapitel 3 die Ergebnisse zum ersten Fragenkomplex nach den konkreten Wohnstandorten der Studierenden vorgestellt. Kapitel 4 widmet sich den Fragen zur jeweiligen Wohnform, während im Kapitel 5 die finanziellen Aspekte bearbeitet werden, die mit der Wohnsituation der Studierenden verbunden sind. Die zentralen Ergebnisse werden in Kapitel 6 zusammengefasst.
Organisational predictors of formal and informal work-family practices
Creators: name: Bardoel., Elizabeth Anne
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Kramers escape of a self-propelled particle
Creators: name: Geiseler, Alexander
name: Hänggi, Peter
name: Schmid, Gerhard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the escape rate of an overdamped, self-propelled spherical Brownian particle on a surface from a metastable potential well. Within a modeling in terms of a 1D constant speed of the particle's active dynamics we consider the associated rate using both numerical and analytical approaches. Regarding the properties of the stationary state in the potential well, two major timescales exist, each governing the translational and the rotational dynamics of the particle, respectively. The particle radius is identified to present the essential quantity in charge of regulating the ratio between those timescales. For very small and very large particle radii, approximate analytic expressions for the particle's escape rate can be derived, which, within their respective range of validity, compare favorably with the precise escape numerics of the underlying full two-dimensional Fokker-Planck description.
description: 7 pages, 6 figures
Andrena nigroaenea
Creators: name: Pauly, Alain
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena nigroaenea

description: Andrena nigroaenea (Kirby, 1802)
 27.IV.1974, 1♂, lande; 4.VI.1979, 1♀, lisière, Cytisus scoparius; 4.VI.1979, 1♀, lande, au sol.
description: Published as part of Pauly, Alain, 2018, Les abeilles sauvages de la lande de Streupas (Hymenoptera: Apoidea), pp. 1-36 in Belgian Journal of Entomology 60 on page 14, DOI: 10.5281/zenodo.13619251
One-dimensional hard-core anyon gas in a harmonic trap at finite temperature
Creators: name: Hao, Yajiang
name: Song, Yafei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the strongly interacting hard-core anyon gases in a one dimensional harmonic potential at finite temperature by extending thermal Bose-Fermi mapping method to thermal anyon-ferimon mapping method. With thermal anyon-fermion mapping method we obtain the reduced one-body density matrix and therefore the momentum distribution for different statistical parameters and temperatures. At low temperature hard-core anyon gases exhibit the similar properties as those of ground state, which interpolate between Bose-like and Fermi-like continuously with the evolution of statistical properties. At high temperature hard-core anyon gases of different statistical properties display the same reduced one-body density matrix and momentum distribution as those of spin-polarized fermions. The Tan's contact of hard-core anyon gas at finite temperature is also evaluated, which take the simple relation with that of Tonks-Girardeau gas $C_b$ as $C=\frac12(1-cosχπ)C_b$.
description: 7 pages, 6 figures
Strategic planning in the context of governance : the Papua New Guinea experience
Creators: name: Baloiloi., Misty Enosi
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
The Korean 1592--1593 Record of a Guest Star: An `impostor' of the Cassiopeia A Supernova?
Creators: name: Park, Changbom
name: Yoon, Sung-Chul
name: Koo, Bon-Chul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The missing historical record of the Cassiopeia A (Cas A) supernova (SN) event implies a large extinction to the SN, possibly greater than the interstellar extinction to the current SN remnant. Here we investigate the possibility that the guest star that appeared near Cas A in 1592--1593 in Korean history books could have been an `impostor' of the Cas A SN, i.e., a luminous transient that appeared to be a SN but did not destroy the progenitor star, with strong mass loss to have provided extra circumstellar extinction. We first review the Korean records and show that a spatial coincidence between the guest star and Cas A cannot be ruled out, as opposed to previous studies. Based on modern astrophysical findings on core-collapse SN, we argue that Cas A could have had an impostor and derive its anticipated properties. It turned out that the Cas A SN impostor must have been bright ($M_V =-14.7 \pm 2.2$ mag) and an amount of dust with visual extinction of $\ge 2.8\pm 2.2 $ mag should have formed in the ejected envelope and/or in a strong wind afterwards. The mass loss needs to have been spherically asymmetric in order to see the light echo from the SN event but not the one from the impostor event.
description: 6 pages, 3 figures, Accepted for publication in the Journal of the Korean Astronomical Society on October 27, 2016
A Smart Centrifuge for Automated Sample Processing with Liquid Handling Robots
Creators: name: Gao, Yueyang
name: Redearn, Andrew
name: Dawes, Simon
name: Shi, Jialei
name: Taylor, Alaric
name: Wurdemann, Helge
name: Guldin, Stefan
Publisher: name: Zenodo
Year: 2024

description: The recent development of automation hardware, such as liquid handling robots, offers accelerated and less labor-intensive workflows for material synthesis and assays. Furthermore, increased data redundancy is expected to contribute to higher reliability and reproducibility of communicated results. One current limitation for further deployment, especially in open hardware solutions, is the integration of centrifuges in automated workflows. Conventional centrifuges are unsuitable for modular applications and, crucially, do not offer the required positional control over the samples. This work presents a centrifuge with infrared sensor-derived positional control based on open-source design and cost-effective manufacturing, which is a prototype for integrated operation. Building with modular components, this centrifuge allows further customized adaptations with controlling from the serial port. This work presents the design, construction, validation, functionality testing, and quality control for operation. Besides, the smart centrifuge is compatible with various deck configurations due to an adaptive design, here demonstrated for the pipetting robot OT-2 (Opentrons). This accessible platform offers flexible use in automated synthesis and sample processing in various fields including life sciences, physical sciences, and engineering.
Quantum thermal transport through anharmonic systems: A self-consistent approach
Creators: name: He, Dahai
name: Thingna, Juzar
name: Wang, Jian-Sheng
name: Li, Baowen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a feasible and effective approach to study quantum thermal transport through anharmonic systems. The main idea is to obtain an {\it effective} harmonic Hamiltonian for the anharmonic system by applying the self-consistent phonon theory. Using the effective harmonic Hamiltonian we study thermal transport within the framework of nonequilibrium Green's function method using the celebrated Caroli formula. We corroborate our quantum self-consistent approach using the quantum master equation that can deal with anharmonicity exactly, but is limited to the weak system-bath coupling regime. Finally, in order demonstrate its strength we apply the quantum self-consistent approach to study thermal rectification in a weakly coupled two segment anharmonic system.
description: 7 pages, 4 figures
Ionic channels in biological membranes. Electrostatic analysis of a natural nanotube
Creators: name: Eisenberg, Bob
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: A simple theory of ion permeation through a channel is presented, in which diffusion occurs according to Fick's law and drift according to Ohm's law, in the electric field determined by all the charges present. This theory accounts for permeation in the channels studied to date in a wide range of solutions. Interestingly, the theory works because the shape of the electric field is a sensitive function of experimental conditions, e.g., ion concentration. Rate constants for flux are sensitive functions of ionic concentration because the fixed charge of the channel protein is shielded by the ions in an near it. Such shielding effects are not included in traditional theories of ionic channels, or other proteins, for that matter.
description: Spelling errors corrected
Andrena nitida
Creators: name: Pauly, Alain
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena nitida

description: Andrena nitida (Müller, 1776)
23.IV.2011, 1♀, lande, nid dans le sol; 21.IV.2014, 2♀, lande étrépée, nid dans le sol.
description: Published as part of Pauly, Alain, 2018, Les abeilles sauvages de la lande de Streupas (Hymenoptera: Apoidea), pp. 1-36 in Belgian Journal of Entomology 60 on page 14, DOI: 10.5281/zenodo.13619251
Forschendes Lernen in der geographischen Hochschullehre
Creators: name: Bornemann, Janina
Publisher: name: Universität Bremen
Year: 2021
Subjects: subject: Forschendes Lernen
subject: Fachdidaktik
subject: Geographie
subject: Hochschuldidaktik
subject: 370

description: In den letzten zwei Jahrzehnten hat „Forschendes Lernen“ (FL) zunehmende Beachtung in der Hochschullandschaft des deutschsprachigen Raumes gefunden. Das Ziel dieses Beitrags besteht darin, das Konzept des Forschenden Lernens grundlegend darzustellen, um darauf aufbauend dessen Umsetzung in der Studieneingangsphase und im Fach Geographie zu erläutern und Herausforderungen, auch im Prüfungswesen, darzustellen.
Designing Tangible User Interfaces to Support Participation -- report of a PDC 2002 workshop
Creators: name: Hornecker, Eva
name: Malmborg, Lone
name: Eden, Hal
Publisher: name: Universität Bremen
Year: 2002
Subjects: subject: Benutzerschnittstelle
subject: Mensch-Maschine-Kommunikation
subject: 0

description: The workshop had several aims: generating dialog among those involved in developing hardware and software for tangible user interfaces, those involved in applying technology to collaborative processes, and those engaged in assessing the usability and efficacy of such environments; giving people the chance to experience tangible interfaces in hands-on exercises; bringing together existing design knowledge and experience; and discussing the specifics of tangible interaction, especially concerning group use.
Überleben in schwierigen Zeiten : Deutsche Umweltorganisationen im 20. Jahrhundert
Creators: name: Markham, William T.
Publisher: name: Universität Bremen
Year: 2004
Subjects: subject: Umweltorganisation
subject: Organisationssoziologie
subject: 300

description: Ich schreibe derzeit ein Buch über die deutschen Umweltorganisationen. Als Spezialist für Organisationssoziologie mit dem Schwerpunkt der Soziologie von Nicht-Regierungsorganisationen interessiere ich mich insbesondere für Umweltorganisationen, die über eine Satzung und einen Vorstand verfügen und die verhältnismäßig lange fortbestehen. Etwa ein Drittel des Buches behandelt die Geschichte solcher Organisationen; der Rest widmet sich der Analyse der aktuellen Dilemmata, mit denen diese Organisationen konfrontiert werden. In meinem heutigen Vortrag gehe ich nur auf die Geschichte der Umweltorganisationen ein und zwar nicht als Historiker, sondern als Soziologe. Ich versuche die Geschichte nicht nur zu erzählen, sondern sie soziologisch zu deuten.
Full-disk Synoptic Observations of the Chromosphere Using H$_α$ Telescope at the Kodaikanal Observatory
Creators: name: Ravindra, B.
name: Prabhu, K.
name: Rangarajan, K. E.
name: Bagare, S. P.
name: Jagdev, Singh
name: Kemkar, P. M. M.
name: Lancelot, J. P.
name: Thulasidharen, K. C.
name: Gabriel, F.
name: Selvendran, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This paper reports on the installation and observations of a new solar telescope installed on 7th October, 2014 at the Kodaikanal Observatory. The telescope is a refractive type equipped with a tunable Lyot H$_α$ filter. A CCD camera of 2k$\times$2k size makes the image of the Sun with a pixel size of 1.21$^{\prime\prime}$ pixel$^{-1}$ with a full field-of-view of 41$^{\prime}$. The telescope is equipped with a guiding system which keeps the image of the Sun within a few pixels throughout the observations. The FWHM of the Lyot filter is 0.4Å~and the filter is motorized, capable of scanning the H$_α$ line profile at a smaller step size of 0.01Å. Partial-disk imaging covering about 10$^{\prime}$, is also possible with the help of a relay lens kept in front of the CCD camera. In this paper, we report the detailed specifications of the telescope, filter unit, its installation, observations and the procedures we have followed to calibrate and align the data. We also present preliminary results with this new full-disk telescope.
description: Aceepted for publication in RAA
On isotropic Lagrangian submanifolds in the homogeneous nearly Kähler $\mathbb{S}^3\times\mathbb{S}^3$
Creators: name: Hu, Zejun
name: Zhang, Yinshan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B35, 53C30, 53C42, 53D12

description: In this paper, we show that isotropic Lagrangian submanifolds in a $6$-dimensional strict nearly Kähler manifold are totally geodesic. Moreover, under some weaker conditions, a complete classification of the $J$-isotropic Lagrangian submanifolds in the homogeneous nearly Kähler $\mathbb{S}^3\times \mathbb{S}^3$ is also obtained. Here, a Lagrangian submanifold is called $J$-isotropic, if there exists a function $λ$, such that $g((\nabla h)(v,v,v),Jv)=λ$ holds for all unit tangent vector $v$.
description: 18 pages. This article has been accepted for publication in SCIENCE CHINA Mathematics
Accurate Polarization Calibration at 800 MHz with the Green Bank Telescope
Creators: name: Liao, Yu-Wei
name: Chang, Tzu-Ching
name: Kuo, Cheng-Yu
name: Masui, Kiyoshi Wesley
name: Oppermann, Niels
name: Pen, Ue-Li
name: Peterson, Jeffrey B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Polarization leakage of foreground synchrotron emission is a critical issue in HI intensity mapping experiments. While the sought-after HI emission is unpolarized, polarized foregrounds such as Galactic and extragalactic synchrotron radiation, if coupled with instrumental impurity, can mimic or overwhelm the HI signals. In this paper we present the methodology for polarization calibration at 700-900 MHz, applied on data obtained from the Green Bank Telescope (GBT). We use astrophysical sources, both polarized and unpolarized sources including quasars and pulsars, as calibrators to characterize the polarization leakage and control systematic effects in our GBT HI intensity mapping project. The resulting fractional errors on polarization measurements on boresight are well controlled to within 0.6%-0.8% of their total intensity. The polarized beam patterns are measured by performing spider scans across both polarized quasars and pulsars. A dominant Stokes I to V leakage feature and secondary features of Stokes I to Q and I to U leakages in the 700-900 MHz frequency range are identified. These characterizations are important for separating foreground polarization leakage from the HI 21 cm signal.
description: 12 pages, 12 figures, accepted for publication in ApJ
Effect of magnetic field on the photon radiation from quark-gluon plasma in heavy ion collisions
Creators: name: Zakharov, B. G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We develop a formalism for the photon emission from the quark-gluon plasma with an external electromagnetic field. We then use it to investigate the effect of magnetic field on the photon emission from the quark-gluon plasma created in $AA$ collisions. We find that even for very optimistic assumption on the magnitude of the magnetic field generated in $AA$ collisions its effect on the photon emission rate is practically negligible. For this reason the magnetic field cannot generate a significant azimuthal asymmetry in the photon spectrum.
description: 17 pages, 6 figures
Wirkung eines quantenoptischen Realexperiments auf das physikalische Reasoning
Creators: name: Waitzmann, Moritz
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: quantum physics
subject: reasoning
subject: mixed-methods
subject: Quantenphysik
subject: Reasoning
subject: Mixed-Methods
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Quantenphysikalische und klassische Erklärungen unterscheiden sich fundamental hinsichtlich ihres Reasoning, da sich die Theorien in ihren physikalischen Grundprinzipien unterscheiden. Die Schulquantenphysik benötigt daher eine klare, eindeutige und nicht- klassische Sprache, um klassisch geprägte Alternativkonzepte zu vermeiden (McNeill und Krajcik, 2008; Müller, 2003; Scholz et al., 2020). In dieser Arbeit wird ein quantenphysikalisches Reasoning mit den Grundprinzipien Probabilistik, Superposition und Interferenz (PSI) betrachtet. PSI ist ein Satz gedanklicher und sprachlicher Werkzeuge, mit deren Hilfe die prototypischen Phänomene der Schulquantenphysik erklärt werden können, ohne Rückgriff auf Konzepte der klassischen Physik (Scholz et al., 2020). Um quantenphysikalisches Reasoning zu motivieren, braucht es ein geeignetes Schlüsselexperiment. Dieses muss sowohl einen eindeutigen Widerspruch zu den bestehenden Konzepten aufzeigen als auch einen neuen, fruchtbaren Erklärungsansatz motivieren (Laumann et al., 2019). Die Kombination aus einem Strahlteilerexperiment und einem Michelson Interferometer mit Einzelphotonen könnte ein solches Experiment sein, da die zeitgleiche Beobachtung von Unteilbarkeit und Interferenz des Photons klassisch nicht erklärt werden kann. Erst durch quantenphysikalisches Reasoning kann das Phänomen widerspruchsfrei erklärt werden (Scholz et al., 2020). Die antizipierte Schlüsselwirkung ist jedoch bisher nicht untersucht. Diese Arbeit nimmt sich dem Desiderat an. Um das Reasoning der Lernenden zu untersuchen, wurde ein Mixed-Format Test mit 26 Items entwickelt und mit Hilfe eines Gruppeninterviews, eines Expertenratings, der Methode des lauten Denkens sowie einer Feldstudie mit 84 Studierenden (1. und 3. Semester Physik), mit einer anschließenden Rasch Analyse und einer explorativen Faktorenanalyse validiert. Weiterhin wurde ein Interviewleitfaden entwickelt, welcher die Charakterisierung des Photons sowie die Erklärung der Teilexperimente in den Fokus nimmt. In einer abschließenden Mixed-Methods-Pre-Post Studie im Eingruppendesign wurden 80 Studierende im (2. Semester Physik) untersucht (36 Studierende interviewt). Die Auswertung zeigt eine signifikante Zunahme der mittleren Personenfähigkeit von Pre nach Post. Ebenso zeigt sich, dass die Studierenden zum Post-Zeitpunkt ein quanten- physikalisches Reasoning für die Erklärung der Interferenz von einzelnen Quantenobjekten favorisierten. Für die Erklärung des Strahlteilerexperiments wurde jedoch ein klassisches sowie ein dualistisches Teilchen-basiertes Reasoning attraktiver. Das Experiment scheint dennoch eine grundsätzliche Schlüsselwirkung zu besitzen.
A penalized method for multivariate concave least squares with application to productivity analysis
Creators: name: Keshvari, Abolfazl
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computation (stat.CO)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We propose a penalized method for the least squares estimator of a multivariate concave regression function. This estimator is formulated as a quadratic programming (QP) problem with $O(n^2)$ constraints, where n is the number of observations. Computing such an estimator is a very time-consuming task, and the computational burden rises dramatically as the number of observations increases. By introducing a quadratic penalty function, we reformulate the concave least squares estimator as a QP with only non-negativity constraints. This reformulation can be adapted for estimating variants of shape restricted least squares, i.e. the monotonic-concave/convex least squares. The experimental results and an empirical study show that the reformulated problem and its dual are solved significantly faster than the original problem. The Matlab and R codes for implementing the penalized problems are provided in the paper.
Andrena ovatula
Creators: name: Pauly, Alain
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena ovatula

description: Andrena ovatula (Kirby, 1802)
20.VII.1988, 1♂, lisière, bac jaune; 20.VII.1988, 1♂, 2♀, lande brûlée, bac jaune; 20.VII.1988, 1♂, 1♀, lande à bruyères, bac jaune.
description: Published as part of Pauly, Alain, 2018, Les abeilles sauvages de la lande de Streupas (Hymenoptera: Apoidea), pp. 1-36 in Belgian Journal of Entomology 60 on page 14, DOI: 10.5281/zenodo.13619251
Market and governance : a study of the market-based reforms in the input delivery system of the agriculture sector in Bangladesh
Creators: name: Azmat., Fara
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Struktur- und Entwicklungsanalyse der Arbeitsmarktregionen in Deutschland 2001 - 2009
Creators: name: Mossig, Ivo
name: Smets, Florian
name: Scheibner, Matthias
Publisher: name: Universität Bremen
Year: 2013
Subjects: subject: Regionalentwicklung
subject: Regionale Wirtschaftsstruktur
subject: Arbeitsmarkt
subject: 910

description: Regionale Strukturpolitik zielt darauf ab, Standortnachteile strukturschwacher Regionen durch Fördermaßnahmen auszugleichen und regionale Entwicklungsunterschiede abzubauen. Zudem soll das generelle Wachstumsziel unterstützt werden. Doch anhand welcher Kennziffern lassen sich strukturelle Unterschiede identifizieren und wie dynamisch ist die Beschäftigtenentwicklung auf regionaler Ebene? Vor diesem Hintergrund werden in diesem Beitrag drei zentrale Fragestellungen bearbeitet: 1. In welchen Arbeitsmarktregionen haben zwischen 2001 und 2009 überdurchschnittlich positive sowie besonders negative Beschäftigtenentwicklungen stattgefunden? 2. Welche räumlichen und sektoralen Konzentrationsprozesse lassen sich feststellen? Stehen die Konzentrationsmaße in einem direkten Zusammenhang zur Beschäftigtenentwicklung? 3. Welchen Einfluss übt die Wachstumsdynamik der einzelnen Wirtschaftszweige auf die Beschäftigtenentwicklung in den Arbeitsmarktregionen aus? Weisen Arbeitsmarktregionen mit überproportional wachstumsstarken Branchen auch ein überproportionales Beschäftigtenwachstum auf?
Low energy electron beam to support safe whole dried insect products
Creators: name: Peguero, D.A.
name: Gold, M.
name: Duewell, T.
name: Waser, A.
name: Dubovcova, B.
name: Vandeweyer, D.
name: Zurbrügg, C.
name: Mathys, A.
Publisher: name: Brill Online
Year: 2023
Subjects: classificationCode: 309999
subject: Other agricultural, veterinary and food sciences not elsewhere classified

description: Product safety is a major concern when using edible insects and insect-derived products due to insects’ diverse microbial community. Therefore, development of reliable post-processing treatments are required. Commonly used thermal treatments are effective against microorganisms but can have negative effects on product quality and nutritional value. Low-energy electron beam (LEEB) is an emerging non-thermal surface treatment technology for microbial decontamination of low water activity goods while preserving product quality. However, its potential application as an insect post-processing treatment has not been explored. To assess the effectiveness of LEEB treatment (250 keV and 12 kGy), three separate experiments were conducted with dried black soldier fly larvae (BSFL) and yellow mealworm (YMW). First, to assess LEEB’s potential in inactivating microorganisms in insect products, LEEB treatment was conducted on dried BSFL inoculated with Escherichia coli K-12. Secondly, the effect of LEEB treatment on reducing naturally occurring microbial populations after microwave drying was evaluated. Finally, a six-month controlled shelf-life study (24 ℃, 65% RH) was conducted to assess the long-term efficacy of LEEB treatment by monitoring physical, chemical and microbiological parameters. LEEB achieved a 4-log10 reduction of inoculated E. coli K-12 on dried BSFL and was effective in reducing numbers of all microbiological parameters (aerobic and anaerobic counts) in YMW. Specifically, in non-inoculated samples, aerobic and anaerobic total viable counts (TVC) were reduced by approximately 4-log10 colony forming units per gram (cfu/g) in YMW. In contrast, LEEB treatment moderately reduced microbial numbers in BSFL, with aerobic and anaerobic TVC reduced by approximately 1–2-log10 cfu/g following LEEB treatment. Microbial counts in both BSFL and YMW remained lower than the control throughout the shelf-life. LEEB treatment did not have an influence on the peroxide value Therefore, LEEB can be an effective and gentle processing technique to support safe dried insect products.
Regularity and a priori error analysis of a Ventcel problem in polyhedral domains
Creators: name: Nicaise, Serge
name: Li, Hengguang
name: Mazzucato, Anna
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35J25, 65N30, 46E35, 52B70, 58J05

description: We consider the regularity of a mixed boundary value problem for the Laplace operator on a polyhedral domain, where Ventcel boundary conditions are imposed on one face of the polyhedron and Dirichlet boundary conditions are imposed on the complement of that face in the boundary. We establish improved regularity estimates for the trace of the variational solution on the Ventcel face, and use them to derive a decomposition of the solution into a regular and a singular part that belongs to suitable weighted Sobolev spaces. This decomposition, in turn, via interpolation estimates both in the interior as well as on the Ventcel face, allows us to perform an a priori error analysis for the Finite Element approximation of the solution on anisotropic graded meshes. Numerical tests support the theoretical analysis.
description: 18 pages, 2 figures
Milchproduktion und Milchviehbetrieb als außerschulischer Lernort für die Sekundarstufe II : Eine handlungs- und schülerorientierte Konzeptionierung zum Regionalen Lernen (2., überarbeitete Auflage)
Creators: name: Meyer Zu Erbe, Fried
name: Fingerhut, Nils
name: Müller, Nicklas
Publisher: name: Universität Bremen
Year: 2018
Subjects: subject: Forschendes Lernen
subject: Fachdidaktik
subject: Geographie
subject: Regionales Lernen
subject: 370

description: Am Institut für Geographie der Universität Bremen wurde im Jahr 2013 in Zusammenarbeit mit dem Milchhof Kück in Gnarrenburg (Landkreis Rotenburg) und dem Verein Bauer e.V. eine aus EU-Mitteln finanzierte, handlungsorientierte Unterrichtseinheit zur Milchproduktion entwickelt. Die Unterrichtseinheit zum außerschulischen Lernort ist für Schülerinnen und Schüler der Sekundarstufe II als Stationenarbeit mit entsprechenden Arbeitsblättern und Materialien konzipiert. Im Zentrum steht das schülerorientierte Lernen an regionalwirtschaftlichen Prozessen im Milchviehbetrieb. Die Unterrichtseinheit verfolgt die Zielsetzung, über die Interessensorientierung durch ein forschendes und entdeckendes Lernen regionale landwirtschaftliche Themen zu vermitteln. Der nachfolgende Beitrag fasst die wesentlichen Konzeptionen und Erkenntnisse aus dem Pilotprojekt und der begleitenden Evaluationsstudie, vor dem didaktischen Hintergrund eines Regionalen Lernens, zusammen. Im Rahmen einer geographiedidaktischen Lehrveranstaltung wird der außerschulische Lernort nochmals erprobt, evaluiert und modifiziert. Dabei wird ein qualitatives Feedback erhoben und in einer anschließenden Gruppendiskussion ausgewertet. Im Sinne eines Design-Based-Research (DBR) werden die Erkenntnisse der Aktionsforschung diskutiert und in entwicklungsorientierte Handlungsempfehlungen übertragen.
Influence of the Magnetic Field on Oscillation Spectra in Solar Faculae
Creators: name: Chelpanov, Andrei A.
name: Kobanov, Nikolai I.
name: Kolobov, Dmitry Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this work, we studied oscillation parameters in faculae above magnetic knots and in the adjacent to them areas. Using SDO data we analysed oscillations in magnetic strength, Doppler velocity, and intensity signals for the lower photosphere, and in intensity for the higher levels. We found that in the magnetic field strength oscillation spectra in magnetic knots, peaks at a frequency of about 4.8 mHz appear, while there are no such frequencies in the adjacent facular patches of a moderate field strength. On the contrary, Doppler velocity photospheric oscillation spectra are similar for these types of regions: in both cases, the significant peaks are in the 2.5--4.5 mHz range, though the oscillations in magnetic knots are 2--3 times weaker than those at the facular periphery. At the upper photosphere, the dominant frequencies in magnetic knots are 0.5--1 mHz higher than in the medium-field regions. The transition region oscillations above magnetic knots mainly concentrate in the 3--6 mHz range, and those above moderate-field patches concentrate below 3 mHz.
description: 16 pages, 9 figures
Konzeptualisierung zwischenstaatlicher Interdependenzen als Netzwerke
Creators: name: Lischka, Michael
name: Mossig, Ivo
Publisher: name: Universität Bremen
Year: 2018
Subjects: subject: Interdependenz
subject: Globalisierung
subject: Internationale Beziehungen
subject: 320

description: Parallel zur fortschreitenden Entwicklung der Kommunikations-, Informations- und Transporttechnologien relativieren sich räumliche und zeitliche Aspekte der Distanzüberwindung von Menschen, Informationen sowie Waren und Kapital jeglicher Art (Dicken 2015, 83ff.). Einhergehend mit diesen Prozessen des ‚Time-Space Shrinking‘, haben sich die Austauschprozesse zwischen Staaten, Unternehmen, Institutionen, Organisationen und Einzelpersonen beschleunigt und intensiviert (Coe et al. 2013, 266ff.; Dicken 2015; 83ff.; Giese et al. 2011, 77ff.). Infolgedessen haben sich transnationale wirtschaftliche, politische und soziale Netzwerke entwickelt, deren Akteure über nationale Grenzen hinweg interagieren (Castells 2000a, 7ff.; Nölke 2005, 67). Die Verdichtung und Dynamik der zugrundeliegenden Verflechtungen prägen das politische und ökonomische Verständnis der Globalisierung (Held et al. 1999, 27 f.; Keohane 2001, 1). Auf zwischenstaatlicher Ebene sind vielfältige Stabilisierungen dieser Verflechtungen beobachtbar, die sich in Form eines reziproken internationalen Austauschsystems offenbaren und im Allgemeinen als Interdependenzen bezeichnet werden. Dieser Begriff wird in verschiedenen Kontexten genannt und schlagwortartig genutzt. Jedoch liegen seiner Benutzung unterschiedliche Verständnisebenen zugrunde. Dementsprechend besteht die erste Zielsetzung dieses Beitrags darin, den Interdependenzbegriff zu schärfen und seine Bedeutung für den geographischen Globalisierungsdiskurs herauszustellen. Darauf aufbauend sollen zweitens Möglichkeiten der empirischen Erfassung zwischenstaatlicher Interdependenzen aufgezeigt und einer kritischen Reflektion unterzogen werden.
Rapid change in agricultural policies. The BSE-crisis in Germany (2000-2001)
Creators: name: Lange, Hellmuth
Publisher: name: Universität Bremen
Year: 2004
Subjects: subject: Landwirtschaft
subject: Agrarpolitik
subject: BSE-Krise
subject: 320

description: Today, „governance“ is regarded as the most effective tool to work on and to solve civil political conflicts between competing social claims (Grote/Mbikpi2001). This applies for the field of agricultural and rural problems, too (Berkes/Folke/Colding 1998; Lance/Gunderson/Holling 2001). Governance is considered to compensate the weaknesses of traditional forms of political-administrative interventions (state failure due to continuous functional differentiation and individualisation). On the other hand, governance mostly enables incremental changes only. Such a change usually proceeds slowly. But in view of the dramatic potential of non-sustainable practices and routines and there is a strong demand for a more substantial and rather rapid change. Agriculture represents in many respects a perfect example for this expectation. However, the more substantial and rapid the intended changes are being conceived the more they inevitably get in conflict with more or less firmly established power structures. Thus, the question arises: How do such hierarchies of power get moving? Or even better: How can rapid and substantial change in favour of more sustainable practices and orientations can be stimulated? Metaphorically speaking: Are there examples to be found where the focus was not primarily on modifying the distribution of a given cake but where the recipe of the cake is fixed anew? The political conflict regarding the reorientation of agricultural policy in Germany which came up in connection with the BSE scandal in the year 2000 may be seen as an example of this kind of change. In this case, the political power of an bb-industrial cluster which had been very stable over decades was shaken to its foundations within just a few weeks time. This process is being described within the scope of an analysis of beliefs, discourses and story-lines (Hajer 1996) of the relevant actors in politics and associations as well as in the press. The decisive point is seen in a rapid process of de-legitimation of the actor discourses having been dominant until then. On this basis existing discourse alliances can be dismantled and new alliances can be formed. The process of de-legitimation is mainly a result of two interrelated elements: The specific logic of more or less voluntarily chosen discourses (about “good agriculture” and the character of BSE) on the one hand and real incidents (identification of an infected cow with undoubtedly German origin) on the other hand. Finally, it will be discussed what are the limits of such processes of rapid dismantling of power positions and political concepts (Kingdon 2001).
Verspannungen im Rücken direkt am Arbeitsplatz selbst behandeln – Ergebnisse einer Anwendungsbeobachtung
Creators: name: Crepaz, Marc Philipp
Publisher: name: Zenodo
Year: 2022
Subjects: Verspannungen
Rückenschmerzen
Arbeitsplatz
Triggerpunktbehandlung
Faszienbehandlung
Gesundheitsförderung
Prävention.

description: Diese Präsentation befasst sich mit dem Thema "Verspannungen im Rücken direkt am Arbeitsplatz selbst behandeln". Es wird eine Möglichkeiten vorgestellt, wie man Rückenschmerzen und Verspannungen mittels eines Rückentherapiegerätes am Arbeitsplatz vorbeugen und behandeln kann. Die Präsentation zeigt auf, wie eine gesunde Arbeitsumgebung die Konzentrationsfähigkeit, Stimmung, Schlaf und Lebensfreude positiv beeinflussen kann. Die vorgestellten Maßnahmen wurden im Rahmen einer Anwendungsbeobachtung des Tirol Instituts für Qualität im Gesundheitswesen getestet und evaluiert.
International Regulation of Work in Times of Globalisation. The International Labour Organisation (ILO) in the Perspective of Organisational Learning
Creators: name: Dirks, Jan
name: Liese, Andrea
name: Senghaas-Knobloch, Eva
Publisher: name: Universität Bremen
Year: 2002
Subjects: subject: International Labour Organization (ILO)
subject: Arbeitspolitik
subject: Globalisierung
subject: 320

description: In our research perspective we regard the ILO as an international forum for the development of common understandings about problems and policies as well as collective actor. We thereby analyse ILO documents about context-specific situations and decision-making processes and we investigate into the significance of different national and social interest-constellations, perspectives and experiences in the political processes by carrying out expert interviews and explorative problem-centred interviews with staff members in the International Labour Office as well as representatives of the constituents (governments, trade unions, employers’ associations).
Andrena similis Smith 1849
Creators: name: Pauly, Alain
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena similis

description: Andrena similis Smith, 1849
 19.VIII.1978, 1♂, lande, Calluna vulgaris; 7.V.1979, 1♂, lande, au sol; 7.V.1979, 1♂, boulaie, Vaccinium myrtillus; 7.V.1979, 5♂, lande, au sol.
description: Published as part of Pauly, Alain, 2018, Les abeilles sauvages de la lande de Streupas (Hymenoptera: Apoidea), pp. 1-36 in Belgian Journal of Entomology 60 on page 14, DOI: 10.5281/zenodo.13619251
The use of an information criterion for assessing asymptotic approximations in econometrics
Creators: name: Atukorala., Ranjani
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Finite element fatigue stress modelling for large vacuum chamber
Creators: name: Nejati, Shahin
Publisher: name: Zenodo
Year: 2023
Subjects: Fatigue analysis, Fracture mechanics, Vacuum chamber, Finite element analysis, Crack growth, Numerical study, Topology optimization, Hot spot

description: This thesis signifies the successful end of my Master of Science program in Civil Engineering at the University of Luxembourg. It was written during my time as an R&D intern at Guardian Industries, which took place from March to September 2023. The primary thrust of this study is to extend the fatigue life of entry/exit vacuum chambers within glass production facilities.