cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vortical light bullets in second-harmonic-generating media supported by a trapping potential
Creators: name: Sakaguchi, Hidetsugu
name: Malomed, Boris A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce a three-dimensional (3D) model of optical media with the quadratic ($χ^{(2)}$) nonlinearity and an effective 2D isotropic harmonic-oscillator (HO) potential. While it is well known that 3D χ^2 solitons with embedded vorticity ("vortical light bullets") are unstable in the free space, we demonstrate that they have a broad stability region in the present model, being supported by the HO potential against the splitting instability. The shape of the vortical solitons may be accurately predicted by the variational approximation (VA). They exist above a threshold value of the total energy (norm) and below another critical value, which determines a stability boundary. The existence threshold vanishes is a part of the parameter space, depending on the mismatch parameter, which is explained by means of the comparison with the 2D counterpart of the system. Above the stability boundary, the vortex features shape oscillations, periodically breaking its axisymmetric form and restoring it. Collisions between vortices moving in the longitudinal direction are studied too. The collision is strongly inelastic at relatively small values of the velocities, breaking the two colliding vortices into three, with the same vorticity. The results suggest a possibility of the creation of stable 3D optical solitons with the intrinsic vorticity.
description: 9 pahes, 7 figures, Optics Express to appear
Process-parallel center deviation measurement of a BTA deep-hole drilling tool
Creators: name: Denkena, Berend
name: Bergmann, Benjamin
name: Kaiser, Sebastian
name: Mücke, Markus
name: Bolle, Dieter
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: center deviation
subject: deep-hole drilling
subject: fiber Bragg grating
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: The BTA deep-hole drilling process is used to manufacture holes with a high length-to-diameter ratio of up to 100. A major quality criteria is the difference between the drilled hole axis and the desired, ideal straight hole axis, called center deviation. A novel measuring system is being investigated in order to measure the center deviation simultaneously to the drilling process. The deviation is determined by calculating the bending line of the boring bar using a newly developed algorithm. The measuring system consists of four subsystems: Optical fiber Bragg grating (FBG) sensors, four eddy current sensors, a rotary encoder and a displacement encoder. These subsystems enable a spatial measurement visualization of the bending line and the center deviation at the head of the boring bar. A major challenge is the separation of the bending strain from other undesired strain fractions. This is done by using an arrangement of two FBG sensors and a digital band pass filter. Experimental investigations show sufficiently good agreement between the calculated and the actual center deviation. Furthermore, drilling experiments reveal that the measurement setup can be used for additional process monitoring by using frequency analysis. Therefore, the investigated system is able to visualize and observe the center deviation. The visualization can be used to derive adequate countermeasures in order to ensure a better process control for the machine operator. The objective of the investigation is to increase the process reliability and productivity by preventing scrap parts. Within this paper, the investigated measuring system, the calculation of the center deviation and first experimental results are described.
Ausgepreist: Zur Bedeutung von Proberäumen in der musikalischen Produktion und deren strukturellen Verknappung in Städten
Creators: name: Merkel, Janet
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften
subject: Arbeitsräume
subject: Musikwirtschaft
subject: Stadtentwicklung
subject: Kulturraumschutz
subject: Kulturpolitik
subject: rehearsal spaces
subject: music industry
subject: urban development
subject: cultural planning
subject: cultural policy

description: Proberäume als Räume der Musikwirtschaft erhalten bislang nur wenig Aufmerksamkeit, ob in der wirtschaftsgeografischen Forschung oder in infrastrukturellen Maßnahmen zur Unterstützung kultureller Produktion in Städten. Dabei erleben viele Städte eine strukturelle Verknappung von künstlerischen Arbeits- und Probenräumen durch Nutzungskonkurrenzen mit dem intensivierten Wohnungs- und Büroneubau in gegenwärtigen Stadtentwicklungsprozessen. Insbesondere die preiswerten lärmintensiven Nischen in ehemaligen Industrie- und Gewerbebauten verschwinden zunehmend. Der Artikel diskutiert Proberäume als kritische Infrastrukturen musikalischer Produktion und identifiziert verschiedene Aspekte für eine infrastrukturelle Förderung in den Städten. Der Grundlage des Artikels sind eine Literaturauswertung sowie sekundäranalytische Auswertungen aktueller Umfragen und Erhebungen zu Proberaumbedarfen unter Berliner Musikschaffenden von 2014 und 2021 durch die Senatsverwaltung für Kultur und Europa und das Musicboard sowie verschiedene Planungen und Beteiligungsverfahren zu künstlerischen Arbeitsräumen in Berlin. Dabei wird deutlich, dass die Verfügbarkeit, Bezahlbarkeit und die Angemessenheit von Proberäumen für Musikschaffende zu den zentralen Herausforderungen zählen und Städte bislang kaum Antworten auf die wachsende Raumkrise für künstlerische Arbeits- und Probenräume entwickelt haben.
title: Electronic Literature Translation: Translation as Process, Experience and Mediation
Creators: name: Portela, Manuel
name: Mencía, María
name: Pold, Søren
Publisher: name: Electronic Book Review
Year: 2018

description: "[T]ranslation is merely a preliminary way of coming to terms with the foreignness of languages to each other." (Walter Benjamin, "The Task of the Translator" [1921])
Estimation of Dynamic Grinding Wheel Wear in Plunge Grinding
Creators: name: Ahrens, M.
name: Damm, J.
name: Dagen, M.
name: Denkena, Berend
name: Ortmaier, T.
Publisher: name: Amsterdam : Elsevier BV
Year: 2017
Subjects: subject: Grinding
subject: Modelling
subject: Monitoring
subject: Regenerative Chatter
subject: Actuators
subject: Grinding (machining)
subject: Grinding wheels
subject: Machining centers
subject: Models
subject: Vibrations (mechanical)
subject: Wear of materials
subject: Wheels
subject: Conventional grinding wheel
subject: Cylindrical plunge grinding
subject: Electromagnetic actuators
subject: Grinding wheel wear
subject: On-line estimation
subject: Regenerative chatters
subject: Self-excited vibrations
subject: Workpiece vibrations
subject: Cutting tools
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Using conventional grinding wheels, self-excited vibrations are one of the most limiting factors in terms of productivity and process stability in cylindrical plunge grinding. Depending on the dynamic behavior of the workpiece and machine, vibrations of the workpiece copy on the grinding wheel's surface, caused by uneven wear. This results in increasing waviness of the grinding wheel and by that, increasing workpiece vibration. Electromagnetic actuators are capable of influencing the dynamic process forces and therefore, the wear. The authors pursue the objective, to achieve an active control of the tool wear for low workpiece vibration and high workpiece quality. Therefore, a tool-wear-model which enables the estimation of the grinding wheel's surface is proposed. The parameterization of the model is realized carrying out a set of reference processes with subsequent identification. Aside from the dynamic tool wear, the workpiece oscillation is simulated by the model. A Kalman Filter is utilized to adjust the model onto the current process using the measured workpiece oscillation. Thus, it is possible to achieve an online estimation of the wave amplitude and phase angle on the grinding wheel's surface as well as their progression. © 2017 The Authors.
Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation
Creators: name: Yang, Yupeng
name: Yang, Guilin
name: Zong, Hongshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Compared with that of standard dark matter halos, the density profile of the recently proposed new kind of dark matter structure named ultracompact minihalos (UCMHs) is steeper and its formation time is earlier. If the dark matter is composed of weakly interactive massive particles (WIMP), the potential signals, e.g. neutrinos, from UCMHs due to the dark matter annihilation would be detected by IceCube/DeepCore or other detectors and such signals would have a very useful complementarity of gamma rays observations. On the other hand, the formation of UCMHs is related to primordial curvature perturbations on the smaller scales. So constraints on the abundance of UCMHs can be used to give a limit on the perturbations on these scales. In previous works in the literature, the authors focused on the γ-ray signals from UCMHs due to dark matter annihilation. In this work, we investigate the neutrino signals from nearby UCMHs. Although no excess of neutrino signals the dark matter annihilation has been observed, the constraints on the abundance of UCMHs can be obtained and these constraints can be translated into the limit on the primordial curvature perturbations on small scales.
description: 7 pages, 3 figures. Comments still welcome!!
title: Arbeitsmarktchancen von gering Qualifizierten
Creators: name: Kalina, Thorsten
name: Weinkopf, Claudia
Publisher: name: DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany
Year: 2018

description: Auf den Punkt ...
Die schlechten Chancen von gering Qualifizierten auf dem deutschen Arbeitsmarkt werden häufig angeführt, um Forderungen nach Ausnahmen vom gesetzlichen Mindestlohn zu rechtfertigen oder dessen Erhöhung ab Anfang 2017 auszusetzen. Alternativ oder ergänzend wird auch gefordert, die Ausnahmeregelung für Langzeitarbeitslose vom Mindestlohn von sechs Monaten auf zwölf Monate zu verlängern.

Unberücksichtigt bleibt dabei, dass von den Beschäftigten mit Stundenlöhnen unter 8,50 € nach Berechnungen des Statistischen Bundesamtes in den Jahren 2014 und 2015 jeweils nur deutlich weniger als ein Drittel formal gering qualifiziert war. Die große Mehrheit der Beschäftigten mit Stundenlöhnen unterhalb des gesetzlichen Mindestlohns verfügte über eine abgeschlossene Berufsausbildung oder sogar einen akademischen Abschluss.

Auch die Beschäftigungschancen von formal gering Qualifizierten haben sich keineswegs so ungünstig entwickelt, wie mitunter angenommen wird. Die Arbeitslosigkeit ist leicht rückläufig und es gab zuletzt durchaus Branchen und Tätigkeitsbereiche, in denen formal gering Qualifizierte teils deutliche Beschäftigungszuwächse zu verzeichnen hatten.

Vor dem Hintergrund zunehmender Probleme bei der Besetzung offener Stellen müssen Unternehmen neue Wege gehen, um ihren Personalbedarf auch künftig decken zu können. Neben einer deutlichen Ausweitung von abschlussbezogenen Aus- und Weiterbildungsmaßnahmen seitens der Unternehmen und der öffentlich geförderten Arbeitsmarktpolitik sollten besondere Anstrengungen darauf gerichtet werden, die Aufstiegsmobilität von unterwertig Beschäftigten gezielt zu fördern, um mehr Einstiegspositionen für gering Qualifizierte und Langzeitarbeitslose zu erschließen.
Martin Straßburger: Montanarchäologie und Wirtschaftsgeschichte des Bergbaus im Schauinsland vom 13. Jahrhundert bis um 1800
Creators: name: Haasis-Berner, Andreas
Publisher: name: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege
Year: 2016

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 45, Nr. 4 (2016)
Fibre Optic Sensors for the Structural Health Monitoring of Building Structures
Creators: name: Bremer, K.
name: Wollweber, M.
name: Weigand, F.
name: Rahlves, Maik
name: Kuhne, M.
name: Helbig, R.
name: Roth, B.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: SHM
subject: fibre optic sensor
subject: humidity sensor
subject: crack sensor
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: In this work different fibre optic sensors for the structural health monitoring of civil engineering structures are reported. A fibre optic crack sensor and two different fibre optic moisture sensors have been designed to detect the moisture ingress in concrete based building structures. Moreover, the degeneration of the mechanical properties of optical glass fibre sensors and hence their long-term stability and reliability due to the mechanical and chemical impact of the concrete environment is discussed as well as the advantage of applying a fibre optic sensor system for the structural health monitoring of sewerage tunnels is demonstrated.
Image data analysis of high resolution μCT data for the characterization of pore orientation and pore space interconnectivity in freeze cast ceramics
Creators: name: Ilzig, Thomas
name: Schumacher, Daniel
name: Wilhelm, Michaela
name: Günther, Stefan
name: Odenbach, Stefan
Publisher: name: Elsevier
Year: 2021
Subjects: subject: Pore space characterization
subject: Pore space interconnectivity
subject: Pore space orientation
subject: High-resolution μCT
subject: Freeze-casting
subject: Porous monoliths
subject: Mimenima
subject: 620

description: Unidirectional and non-unidirectional freeze cast SiOC monoliths were characterized by means of digital image processing. For this purpose a novel method of pore segmentation in complex dendritic pore morphologies was developed. For the first time, the proposed method made it possible to perform an extensive geometrical and structural pore space characterization and analysis on single pore level. The orientation of the primary dendritic channels was obtained from high resolution μCT images. Based on the mean directional vector distribution, the pore space was segmented. As a result, 95% (unidirectional) and 88% (non-unidirectional) of the original binary pore volume could be allocated to individual pores. The pore interconnectivity could be derived from this segmented pore space. It has been shown that the degree of interconnectivity between pores of the same orientation is higher than between pores of different orientation. This could be the reason for peculiar wicking behavior in non-unidirectional samples.
Rapidly growing entire functions with three singular values
Creators: name: Merenkov, Sergei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We settle the problem of finding an entire function with three singular values whose Nevanlinna characteristic dominates an arbitrarily prescribed function.
description: 20 pages
TIJORAT BANKLARIDA MHXSNI QO'LLASH NATIJALARINI TAHLIL QILISH
Creators: name: Begiyev, Sherzod
Publisher: name: Zenodo
Year: 2024

description: Iqtisodiyotni modernizatsiyalash sharoitida xalqaro hisob tizimi taraqqiy ettirilishida aksiyadorlik jamiyatlari, tijorat banklari, sug’urta tashkilotlari, davlat uluhiga tegishli bo’lgan xo’jalik jamiyatlarida va yirik soliq to’lovchilarning moliyaviy hisobotlarni moliyaviy hisobotning xalqaro standartlari (MHXS) asosida tayyorlashi muhim hisoblanadi. Ushbu maqolada moliyaviy hisobotning ikkinchi shakli: moliyaviy natijalar to’g’risidagi hisobotni milliy va xalqaro standartlar asosida tuzishning o’ziga xos jihatlari ularning bir-biridan farqi ko’rib chiqilgan. MHXSga va BHMSda buxgalteriya hisobini yaqinlashtirish boʻyicha amaliy tavsiyalar ishlab chiqilgan.
Combinatorial neural codes from a mathematical coding theory perspective
Creators: name: Curto, Carina
name: Itskov, Vladimir
name: Morrison, Katherine
name: Roth, Zachary
name: Walker, Judy L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Information Theory (cs.IT)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Shannon's seminal 1948 work gave rise to two distinct areas of research: information theory and mathematical coding theory. While information theory has had a strong influence on theoretical neuroscience, ideas from mathematical coding theory have received considerably less attention. Here we take a new look at combinatorial neural codes from a mathematical coding theory perspective, examining the error correction capabilities of familiar receptive field codes (RF codes). We find, perhaps surprisingly, that the high levels of redundancy present in these codes does not support accurate error correction, although the error-correcting performance of RF codes "catches up" to that of random comparison codes when a small tolerance to error is introduced. On the other hand, RF codes are good at reflecting distances between represented stimuli, while the random comparison codes are not. We suggest that a compromise in error-correcting capability may be a necessary price to pay for a neural code whose structure serves not only error correction, but must also reflect relationships between stimuli.
description: 26 pages, 8 figures
Pore-scale analysis of axial and radial dispersion coefficients of gas flow in macroporous foam monoliths using NMR-based displacement measurements
Creators: name: Mirdrikvand, Mojtaba
name: Sadeghi, Mehrdad
name: Karim, M. Nurul
name: Thöming, Jorg
name: Dreher, Wolfgang
Publisher: name: Elsevier
Year: 2020
Subjects: subject: Dispersion coefficient
subject: Axial and radial dispersion
subject: NMR
subject: Foam catalyst support
subject: Gas
subject: Mimenima
subject: 620

description: A micro-scale analysis of mass transport in ceramic foams that are used as catalyst supports in gas phase reactions is of high interest. Although the effects of flow rate and foam parameters on the radial and axial dispersion are known for liquid flows, no pore-scale experimental analysis has been yet reported to correlate the mechanical and diffusional dispersion of gas flows to the geometry of open-cell foams. Here, a spatially resolved Pulsed Field Gradient NMR method is applied to determine dispersion coefficients of thermally polarized gas along axial and transversal directions of open-cell foams. The comparative study of three commercial foam samples with different morphologies shows the effect of open porosity, window size, and flow rate on gas dispersion. Additionally, the influence of mechanical and diffusional dispersion at each flow rate is investigated for individual samples. By observing the transition from diffusional dispersion to mechanically driven dispersion of gas, it is found that diffusional dispersion plays an important role, even at higher flow rates after a transition from Darcy to Darcy-Forchheimer regime occurs. The measured values for dispersion coefficients of methane can be directly used in pseudo-heterogeneous models for the methanation reaction.
Rückblick auf die Ausstellung »Barockes Silber aus rheinischen Sammlungen«, Aachen 1964
Creators: name: Clasen, Karl-Wilhelm
Publisher: name: Aachener Kunstblätter
Year: 2016

description: -
description: Aachener Kunstblätter, Bd. 32 (1966): Aachener Kunstblätter
Stolpersteine im Sichtfeld
Creators: name: Babendreier, Jürgen
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2016

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 21, Nr. 2 (2015): AKMB-news
Anacamptis pyramidalis L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. pyramidalis L. Cat. 294und 430. l: Cocorier (F.); Arpille (F.). - 2:Faldumalp (J.); Lötschental(F.). - 3:Mont-Chemin (F., Closuit); La Barma im Val des Dix, 2400 m (0. Meylan); Col de Torrent (Beauverd); Grimentz-Zinal (idem); Zinal (Becherer); Alpen des Turtmanntales (J.); St.Niklaus (Becherer und Kilcher); Trifttal ob Zermatt, 2300 m (Thellung). - 4: Aletschwald (Schröter);Binntal, mehrfach (Binz); Rappental (B. C.W.); Münstigertal (Zwicky); Gerental (Zahn).
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: Review of Making Literature Now by Amy Hungerford
Creators: name: Berry , Ralph M.
Publisher: name: Electronic Book Review
Year: 2018

description: Berry, who with ebr editor Joseph Tabbi initiated the Fictions Present thread (circa 2006), finds few intersections of that project with Hungerford’s celebrated Making Literature Now, not least because Hungerford shows little interest in the question of how her titular concept, when applied to commercial and cultural productions, indie and alt endeavors, “manages to mean what those trying to make literature are trying to make.”
Numerical verification of random phase-and-amplitude formalism of weak turbulence
Creators: name: Tanaka, Mitsuhiro
name: Yokoyama, Naoto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The Random Phase and Amplitude Formalism (RPA) has significantly extended the scope of weak turbulence studies. Because RPA does not assume any proximity to the Gaussianity in the wavenumber space, it can predict, for example, how the fluctuation of the complex amplitude of each wave mode grows through nonlinear interactions with other modes, and how it approaches the Gaussianity. Thus, RPA has a great potential capability, but its validity has been assessed neither numerically nor experimentally. We compare the theoretical predictions given by RPA with the results of direct numerical simulation (DNS) for a three-wave Hamiltonian system, thereby assess the validity of RPA. The predictions of RPA agree quite well with the results of DNS in all the aspects of statistical characteristics of mode amplitudes studied here.
Additional file 2 of Identifying and ranking causal biochemical biomarkers for breast cancer: a Mendelian randomisation study
Creators: name: Tang, Sonja N.
name: Zuber, Verena
name: Tsilidis, Konstantinos K.
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 2: STROBE-MR Checklist.
Microstructure and Magnetic Properties of Cobalt and Zinc Containing Magnesium Alloys
Creators: name: Demminger, Christian
name: Klose, Christian
name: Maier, Hans Jürgen
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: magnesium
subject: cobalt
subject: magnetic materials
subject: load-sensitive materials
subject: die-casting
subject: sand-casting
subject: eddy-current measurements
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The magnetic properties of lightweight alloys based on magnesium and cobalt offer a novel way to measure mechanical loads throughout the entire structural component using the magnetoelastic effect. Since the solubility of cobalt in the magnesium matrix is negligible, the magnetic properties mainly originate from Co-rich precipitates. Size and distribution of the Co-containing phases within the alloy's microstructure can be influenced during the initial processing method of the alloy. Specifically, the cooling rate in the casting processes has a major influence on the resulting magnetic properties. In this study, Mg-Co-based alloys were produced by several casting methods which feature substantially different cooling rates, i.e. gravity sand casting, gravity die casting and high-pressure die casting. The differences between the manufactured alloys’ micro- and phase structures are compared and the superior magnetic and mechanical properties of the high-pressure die cast material are demonstrated.
The 2011 Periastron Passage of the Be Binary delta Scorpii
Creators: name: Miroshnichenko, A. S.
name: Pasechnik, A. V.
name: Manset, N.
name: Carciofi, A. C.
name: Rivinius, Th.
name: Stefl, S.
name: Gvaramadze, V. V.
name: Ribeiro, J.
name: Fernando, A.
name: Garrel, T.
name: Knapen, J. H.
name: Buil, C.
name: Heathcote, B.
name: Pollmann, E.
name: Mauclaire, B.
name: Thizy, O.
name: Martin, J.
name: Zharikov, S. V.
name: Okazaki, A. T.
name: Gandet, T. L.
name: Eversberg, T.
name: Reinecke, N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We describe the results of the world-wide observing campaign of the highly eccentric Be binary system delta Scorpii 2011 periastron passage which involved professional and amateur astronomers. Our spectroscopic observations provided a precise measurement of the system orbital period at 10.8092+/- 0.0005 years. Fitting of the He II 4686A line radial velocity curve determined the periastron passage time on 2011 July 3, UT 9:20 with a 0.9--day uncertainty. Both these results are in a very good agreement with recent findings from interferometry. We also derived new evolutionary masses of the binary components (13 and 8.2 Msun) and a new distance of 136 pc from the Sun, consistent with the HIPPARCOS parallax. The radial velocity and profile variations observed in the H_alpha line near the 2011 periastron reflected the interaction of the secondary component and the circumstellar disk around the primary component. Using these data, we estimated a disk radius of 150 Rsun. Our analysis of the radial velocity variations measured during the periastron passage time in 2000 and 2011 along with those measured during the 20th century, the high eccentricity of the system, and the presence of a bow shock-like structure around it suggest that delta Sco might be a runaway triple system. The third component should be external to the known binary and move on an elliptical orbit that is tilted by at least 40 degree with respect to the binary orbital plane for such a system to be stable and responsible for the observed long-term radial velocity variations.
description: 35 pages, 6 figures, 3 tables, accepted to ApJ
title: O rozczarowaniu utopią i myśleniu krytycznym
Creators: name: Włodarczyk, Rafał
Publisher: name: Instytut Pedagogiki Uniwersytetu Wrocławskiego
Year: 2017

description: „Utopie roztrzaskane, marzenia przekreślone” to istotny zdaniem Bronisława Baczki trop do badań wyobrażeń społecznych przełomu XX i XXI wieku, w tym odczytania współczesnego kryzysu świadomości utopijnej i jego znaczenia dla pedagogiki. Odczytanie to wymaga rozwinięcia kilku kwestii związanych z rozumieniem relacji utopii i krytyki, co również stanowić będzie przedmiot tego artykułu.
CN Anomalies in the Halo System and the Origin of Globular Clusters in the Milky Way
Creators: name: Carollo, Daniela
name: Martell, Sarah
name: Beers, Timothy
name: Freeman, Ken
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the kinematics and orbital properties of a sample of red giants in the halo system of the Milky Way that are thought to have formed in globular clusters, based on their anomalously strong UV/blue CN bands. The orbital parameters of the CN-strong halo stars are compared to those of the inner- and outer-halo populations as described by Carollo et al., and to the orbital parameters of globular clusters with well-studied Galactic orbits. The CN-strong field stars and the globular clusters both exhibit kinematics and orbital properties similar to the inner-halo population, indicating that stripped or destroyed globular clusters could be a significant source of inner-halo field stars, and suggesting that both the CN-strong stars and the majority of globular clusters are primarily associated with this population.
description: 15 pages, 5 figures, Accepted for publication on the astrophysical journal
Dequantizing read-once quantum formulas
Creators: name: Cosentino, Alessandro
name: Kothari, Robin
name: Paetznick, Adam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum formulas, defined by Yao [FOCS '93], are the quantum analogs of classical formulas, i.e., classical circuits in which all gates have fanout one. We show that any read-once quantum formula over a gate set that contains all single-qubit gates is equivalent to a read-once classical formula of the same size and depth over an analogous classical gate set. For example, any read-once quantum formula over Toffoli and single-qubit gates is equivalent to a read-once classical formula over Toffoli and NOT gates. We then show that the equivalence does not hold if the read-once restriction is removed. To show the power of quantum formulas without the read-once restriction, we define a new model of computation called the one-qubit model and show that it can compute all boolean functions. This model may also be of independent interest.
description: 14 pages, 8 figures, to appear in proceedings of TQC 2013
Statistical analysis of the determinations of the Sun's Galactocentric distance
Creators: name: Malkin, Zinovy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based on several tens of Ro measurements made during the past decades, several studies have been performed to derive the best estimate of Ro. Some used just simple averaging to derive a result, whereas others provided comprehensive analyses of possible errors in published results. In either case, detailed statistical analyses of data used were not performed. However, a computation of the best estimates of the Galactic rotation constants is not only an astronomical but also a metrological task. Here we perform an analysis of 53 Ro measurements (published in the past 20 years) to assess the consistency of the data. Our analysis shows that they are internally consistent. It is also shown that any trend in the Ro estimates from the last 20 years is statistically negligible, which renders the presence of a bandwagon effect doubtful. On the other hand, the formal errors in the published Ro estimates improve significantly with time.
description: Updated and abridged version of arxiv:1202.6128 conforming to the proceedings page limit
Improved Microtransformer Design Utilizing Fe-Co Magnetic Core
Creators: name: Dinulovic, Dragan
name: Gerfer, Alexander
name: Haug, Martin
name: Kaiser, Matthias
name: Wurz, Marc Christopher
name: Rissing, Lutz
Publisher: name: Amsterdam : Elsevier
Year: 2015
Subjects: subject: Magnetic
subject: MEMS
subject: Microinductor
subject: Microtransformer
subject: Thin-film Fabrication
subject: Physics
subject: Current capability
subject: Electrical resistances
subject: High-frequency power applications
subject: Micro inductors
subject: Micro-transformer
subject: Stable characteristics
subject: Magnetism
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: This paper presents the design, fabrication, and characterization of on silicon integrated micro-transformers for high frequency power applications. This device has stable characteristic of L versus f up to frequencies higher as 50 MHz. The design is improved, so that the electrical resistance of coils is reduced and current capability is increased. The microtransformer shows an inductivity of about 50 nH, resistance of 350 mΩ and can be applied for current up to 1.5 A.
Integers without large prime factors: from Ramanujan to de Bruijn
Creators: name: Moore, Pieter
Publisher: name: Zenodo
Year: 2014

description: A small survey of work done on estimating the number of integers without large prime factors up to around the year 1950 is provided. Around that time N.G. de Bruijn published results that dramatically advanced the subject and started a new era in this topic.
Energy Efficiency in Machining of Aircraft Components
Creators: name: Denkena, Berend
name: Dittrich, Marc-André
name: Jacob, Stefan
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Aerospace Industry
subject: Energy Efficiency
subject: Recycling
subject: Titanium
subject: Aerospace industry
subject: Economics
subject: Life cycle
subject: Machining
subject: Manufacture
subject: Titanium alloys
subject: Aircraft components
subject: Competitive pressure
subject: Environmental aspects
subject: Influencing parameters
subject: Machining Process
subject: Manufacturing process
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: High production costs and material removal rates characterize the manufacturing of aircraft components made of titanium. Due to competitive pressure, the manufacturing processes are highly optimized from an economical perspective, whereas environmental aspects are usually not considered. One example is the recycling of titanium chips. Because of process-induced contaminations they do not meet the quality required for recycling in high-grade titanium alloys. Thus the components need to be manufactured from primary material, which leads to a poor energy balance. This paper describes a methodology to increase the recycling rate and energy efficiency of the manufacturing process by investigating the influencing parameters on chip quality of the machining process with the aim to increase the chip quality to a recyclable degree under monetary aspects. The analysis shows that the recycling rate can be significantly increased through dry cutting, which also brings economic benefits.
Implementation of GTN Model in Dual-horizon Peridynamics
Creators: name: Ren, H.
name: Zhuang, X.
name: Rabczuk, T.
Publisher: name: London : Elsevier Ltd.
Year: 2017
Subjects: subject: dual-horizon
subject: Ductile fracture
subject: GTN model
subject: Calculations
subject: Constrained optimization
subject: Continuum mechanics
subject: Fracture
subject: Numerical methods
subject: Variational techniques
subject: Bulk behavior
subject: Discontinuum
subject: Gtn models
subject: Penalty methods
subject: Peridynamics
subject: State based
subject: Zero energy modes
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: In this paper we present a dual-horizon peridynamics (DH-PD) for ductile fracture. The dual-horizon non-ordinary state-based PD is derived based on variational calculus and accounts for large deformation. The GTN model is employed to model the bulk behavior while DH-PD can naturally capture the transition from continuum to discontinuum. The penalty method is employed to suppress the zero-energy mode. Three numerical examples in three-dimensional are tested to demonstrate the capability of the method. © 2017 The Authors.
Fabrication and Sensing Applications of Multilayer Polymer Optical Waveguides
Creators: name: Rezem, Maher
name: Günther, Axel
name: Rahlves, Maik
name: Roth, Bernd
name: Reithmeier, Eduard
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: polymer optical waveguide
subject: production technology
subject: hot embossing
subject: optical sensing
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: For sensing applications in structural health monitoring, process technology or life sciences polymer micro-optical sensors are highly promising as they offer several advantages in comparison to other sensor types. In this work, a fabrication process of low-cost planar polymer optical waveguides based on hot embossing and doctor blading is presented. Such waveguides represent one of the main building blocks of micro-optical systems. The refractive index and propagation losses of several waveguide materials are characterized. In order to increase the integration density of optical components, the fabrication of multilayer waveguides is investigated. Finally, potential applications of the fabricated waveguides are outlined.
Material Removal Mechanisms in Grinding of Mixed Oxide Ceramics
Creators: name: Denkena, Berend
name: Busemann, Sarah
name: Gottwik, Lukas
name: Grove, Thilo
name: Wippermann, Andi
Publisher: name: Amsterdam : Elsevier BV
Year: 2017
Subjects: subject: active abrasive grains
subject: grinding
subject: material removal mechanism
subject: oxide ceramic
subject: Bending strength
subject: Ceramic materials
subject: Cost effectiveness
subject: Oxides
subject: Zirconia
subject: Abrasive grains
subject: Grinding mechanism
subject: Grinding process
subject: Material removal mechanisms
subject: Oxide ceramics
subject: Quick-stop device
subject: Tetragonal to monoclinic phase transformations
subject: Zirconia-based ceramics
subject: Grinding (machining)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The technological basis for a cost-effective and reliable grinding process of mixed oxide ceramics requires a fundamental understanding of the prevailing grinding mechanisms to maintain surface quality and strength requirements. However, these material removal mechanisms are not yet fully understood. This paper presents an innovative quick stop device for the interruption of cut during grinding. This appropriate method allows a detailed analysis of the interactions of grains along the contact zone. The results reveal correlations between the prevailing grinding mechanisms, the tetragonal to monoclinic phase transformation of the zirconia based ceramics as well as the resulting bending strength. © 2016 The Authors. Published by Elsevier B.V.
Prediction of the Principal Stress Direction for 5-axis Ball End Milling
Creators: name: Böß, Volker
name: Grove, Thilo
name: Denkena, Berend
name: Mücke, A.
name: Nespor, D.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Milling
subject: Principal Stress Direction
subject: Residual Stress
subject: Titanium
subject: Forecasting
subject: Milling (machining)
subject: Residual stresses
subject: Ball end milling
subject: Compressor blades
subject: Damaged components
subject: Micro topography
subject: Principal stress
subject: Residual stress state
subject: Stress characteristics
subject: Surface integrity
subject: Ball milling
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: While regenerating damaged components, e.g. compressor blades, the removal of excess weld material called re-contouring often determines the surface integrity including the residual stress state. A load-specific residual stress state is beneficial for lifetime. This leads to the necessity to predict the resulting residual stress state after machining. The paper describes two models, which predict the principal stress direction as a residual stress characteristic for 5-axis ball nose end milling of Ti-6Al-4 V. One model uses process force components, the other is based on the microtopography of the workpiece, which is influenced by the kinematics of the process.
Transmission degradation and preservation for tapered optical fibers in rubidium vapor
Creators: name: Lai, M. M.
name: Franson, J. D.
name: Pittman, T. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The use of sub-wavelength diameter tapered optical fibers (TOF's) in warm rubidium vapor has recently been identified as a promising system for realizing ultra-low-power nonlinear optical effects. However, at the relatively high atomic densities needed for many of these experiments, rubidium atoms accumulating on the TOF surface can cause a significant loss of overall transmission through the fiber. Here we report direct measurements of the time-scale associated with this transmission degradation for various rubidium density conditions. Transmission is affected almost immediately after the introduction of rubidium vapor into the system, and declines rapidly as the density is increased. More significantly, we show how a heating element designed to raise the TOF temperature can be used to reduce this transmission loss and dramatically extend the effective TOF transmission lifetime.
description: 10 pages, 8 figures
Spielräume im Unbestimmten
Creators: name: Buchert, Margitta
Publisher: name: Berlin : Jovis
Year: 2006
Subjects: subject: architecture and art
subject: body and space
subject: perceptual diversity
subject: sense and sensuality
subject: cultural dynamics
subject: Architektur und Kunst
subject: Körper und Raum
subject: Wahrnehmungsvielfalt
subject: Sinn und Sinnlichkeit
subject: kulturelle Dynamik
subject: Konferenzschrift
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: Auf der Suche nach Schnittstellen von Architektur und Kunst geht Margitta Buchert mit ihrem Beitrag für die Publikation `Inklusiv. Architektur und Kunst´ der Frage nach den Relationen von Körper und Raum nach. Aus transdisziplinären Blickwinkeln befragt sie das zeitgenössische Potential und die Transfermöglichkeiten der mit diesem historisch bedeutsamen Thema einhergehenden Phänomene und ihrer anthropologischen Bedeutungen. Der menschliche Körper mit seiner spezifischen Wahrnehmungsvielfalt und seinen Fähigkeiten (kulturell) zu gestalten wird dabei als das eigentlich kreative Potential hervorgehoben, mit dem Architektur- und Kunstschaffende, Theoretiker und Praktiker zugleich auf die Herausforderungen der chaotischen und unbestimmten Gegenwart 21. Jahrhunderts reagieren können; auf eine befreite wie auch spielerische Art und Weise.
description: Seeking interfaces between architecture and art, Margitta Buchert‘s contribution to the publication `Inclusive. Architecture and Art‘ explores the question of the relations between body and space.From transdisciplinary perspectives, she questions the contemporary potential and transfer possibilities of the phenomena associated with this historically significant theme and their anthropological meanings. The human body, with its specific perceptual diversity and its abilities to (culturally) shape, is thereby highlighted as the actual creative potential with which architectural and artistic practitioners, theorists and practitioners alike, can respond to the challenges of the chaotic and indeterminate present 21st century; in a way that is both liberated and playful.
Measurements of top-quark properties at the Tevatron
Creators: name: Jung, A. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Recent measurements of top-quark properties at the Tevatron are presented. CDF uses data corresponding up to 9.0 fb^{-1} to measure the ratio R of the branching fractions B(t \rightarrow Wb) / B(t \rightarrow Wq), the branching fraction for top-quarks decaying into τleptons and the cross section for the production of an additional γin t\bar{t} production. The results from all these measurements agree well with their respective Standard Model expectation. D0 uses 5.3 fb^{-1} of data to measure the t\bar{t} cross section as a function of the time. A time dependency would imply Lorentz invariance violation as implemented by the Standard Model extension. No time dependency is observed and D0 sets first limits in the top-quark sector for Lorentz invariance violation. D0 also determines indirectly the top quark width using the results of earlier measurements at D0. The measured top quark width is in agreement with the SM expectation and does not show any hints for new physics contributions.
description: 5 pages, 5 figures, To appear in Proceedings of Top 2012
title: Forms of Censorship; Censorship As Form
Creators: name: McElroy, Joseph
Publisher: name: Electronic Book Review
Year: 2018

description: Beginning as a talk delivered at the National University of Kyiv-Mohyla Academy, Ukraine May 17, 2017, now edited and amplified for publication in the electronic book review and the 2018 collection of ebr essays forthcoming from Bloomsbury Press.
title: Kreativität. Wissen
title: Creativity. Knowledge
titleType: AlternativeTitle
Creators: name: Buchert, Margitta
Publisher: name: Berlin : Jovis
Year: 2014
Subjects: subject: Reflexive design
subject: Design Research
subject: Reflexivity
subject: Design and Research in architecture and landscape architecture
subject: Design knowledge
subject: Tacit knowledge
subject: Knowledge genesis and knowledge communication in architecture
subject: Forms of knowledge
subject: Research networks in architecture
subject: Reflexives Entwerfen
subject: Entwurfsforschung
subject: Reflexivität
subject: Entwerfen und Forschen in Architektur und Landschaftsarchitektur
subject: Entwurfswissen
subject: Implizites Wissen
subject: Wissensgenese und Wissenskommunikation in der Architektur
subject: Wissensformen
subject: Forschungsnetzwerke der Architektur
subject: Konferenzschrift
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: Die Einleitung gibt einen Überblick, wie in den dazugehörigen Beiträgen des Kapitels gestaltendes Entwerfen, das durch eine kreative Wissensproduktion und projektive Praxis gekennzeichnet ist, als integrative und kreative Wissenskultur verstanden wird, die vielfältige Wissensformen mit Reflektion und Produktion verbindet.
description: The introduction gives an overview of how design, which is characterized by creative knowledge production and projective practice, is understood in the constributions of the chapter as an integrative and creative knowledge culture that combines diverse forms of knowledge with reflection and production.