cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Experimental and numerical investigations of the development of residual stresses in thermo-mechanically processed Cr-alloyed steel 1.3505
Creators: name: Behrens, Bernd-Arno
name: Schröder, Jörg
name: Brands, Dominik
name: Scheunemann, Lisa
name: Niekamp, Rainer
name: Chugreev, Alexander
name: Sarhil, Mohammad
name: Uebing, Sonja
name: Kock, Christoph
Publisher: name: Basel : MDPI AG
Year: 2019
Subjects: subject: Distortions
subject: Fe2-method
subject: Martensite transformation
subject: Microstructure
subject: Multi-phase-field
subject: Multiscale simulation
subject: Residual stresses
subject: Thermo-mechanical forming process
subject: X-ray diffraction
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Residual stresses in components are a central issue in almost every manufacturing process, as they influence the performance of the final part. Regarding hot forming processes, there is a great potential for defining a targeted residual stress state, as many adjustment parameters, such as deformation state or temperature profile, are available that influence residual stresses. To ensure appropriate numerical modeling of residual stresses in hot forming processes, comprehensive material characterization and suitable multiscale Finite Element (FE) simulations are required. In this paper, experimental and numerical investigations of thermo-mechanically processed steel alloy 1.3505 (DIN 100Cr6) are presented that serve as a basis for further optimization of numerically modeled residual stresses. For this purpose, cylindrical upsetting tests at high temperature with subsequently cooling of the parts in the media air or water are carried out. Additionally, the process is simulated on the macroscale and compared to the results based on the experimental investigations. Therefore, the experimentally processed specimens are examined regarding the resulting microstructure, distortions, and residual stresses. For the investigation on a smaller scale, a numerical model is set up based on the state-data of the macroscopic simulation and experiments, simulating the transformation of the microstructure using phase-field theory and FE analysis on micro- and meso-scopic level.
Freiformabrollbiegen
Creators: name: Nebeling, Daniel
name: Engel, Bernd
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Umformtechnik
subject: Biegen
subject: Freiformbiegen
subject: Freiformabrollbiegen
subject: Biegen

description: Current and future requirements for bending technology are identified and it is shown why these requirements cannot be met by current bending methods. The newly developed Free Form Unroll Bending (FFUB) is presented as a possible solution. Forming simulations are used to show that the process is, in principle, suitable for the bending of profile components. It is also shown that the process can be used to re-bend previously bent components, which is an important prerequisite for the cascading use of bent components. A process variant is presented in which the tool kinematics can be implemented using industrial robots. Due to the widespread use of industrial robots, this process variant offers a flexible and cost-effective entry into bending technology.
title: Jean M. Auel, Das Tal der Pferde - Ein Roman aus der Frühzeit des Menschen, München 1984
Creators: name: Auler, Jost
Publisher: name: University Library Heidelberg
Year: 2016

description: Jean M. Auel, Das Tal der Pferde - Ein Roman aus der Frühzeit des Menschen, München 1984 (Meyster Verlag), Original: The Valley of Horses, New York 1982 (Crown Publishers), 600 Seiten, keine Abbildungen, Abriß des Jungpaläolithikums und Zeittafel im Anhang
The CP(N-1) model on a Disc and Decay of a Non-Abelian String
Creators: name: Gorsky, A.
name: Milekhin, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the role of quantum effects in the non-perturbative decay of non-abelian string with orientational moduli in non-supersymmetric D=4 gauge theory. To this aim the effective action in the $CP(N-1)$ model on a disc at large N has been calculated. It exhibits phase transition at some radius, the "wrong sign" Luscher term and large boundary boojum-like negative contribution. The effect of $θ$ - term and the possibility of the spontaneous creation of the non-abelian string are briefly discussed.
Berücksichtigung der Umformhistorie gezogener Drähte bei der Simulation des Federwindens
Creators: name: Rethmann, Philipp
name: Grodotzki, Joshua
name: Tekkaya, A. Erman
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Federwinden
subject: Bauschingereffekt
subject: kinematische Verfestigung
subject: Eigenspannungen
subject: Biegen

description: Schraubendruckfedern werden in der Regel aus hochfesten Stahldrähten hergestellt. Viele der verwendeten Stahlsorten erhalten ihre hohe Festigkeit aus der Kaltverfestigung durch große plastische Umformung während des Drahtziehens. Diese kaltgezogenen Stahldrähte weisen während der Umformung ein anisotropes Verfestigungsverhalten auf, das einen erheblichen Einfluss auf die Entwicklung von Eigenspannungen beim Wickeln der Feder hat. Es wird gezeigt, dass die Rückfederungs- und Eigenspannungsvorhersage in der Prozesssimulation des Federwickelns durch die Verwendung des Chaboche Verfestigungsmodells mit einem nicht-sättigenden Rückspannungsanteil im Vergleich zu rein isotropen Verfestigungsmodellen erheblich verbessert werden kann. Untersucht werden wärmebehandelte (patentierte) kaltgezogene unlegierte Federstahldrähte sowie kaltgezogene Drähte aus austenitischen, rostfreiem Stahl. Die Materialparameter für die kinematischen Verfestigungsmodelle werden invers auf der Grundlage der Ergebnisse von Zug- und Druckversuchen an den Drähten bestimmt. Zur Validierung der Simulationsergebnisse werden Biegeversuche durchgeführt. Die Verformungsgeschichte des Werkstoffs wurde durch die Bestimmung einer initialen Fließflächenverschiebung erfolgreich berücksichtigt.
Heterogeneous Perspectives of Urban Resilience - Dealing with Flood and Heat Events in European Cities
Creators: name: Menking, Kendra
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Climate Change
subject: Resilience
subject: Urbanism
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung

description: Numerous threats, stresses and shocks occurring from both natural hazards and human-made events are not only put on our ecosystems but further concern our urban and regional systems. Global warming has reached European cities and city-regions with its alarming impacts such as enduring heat waves and heavy flash floods. To react to these challenges and to reduce vulnerabilities in response to rapidly changing climatic conditions and growing urban complexities, various planning concepts have been introduced to urban and regional development.
Segmentierung von Biegeformen als Grundlage für die Entwicklung von Transformer-Werkzeugen
Creators: name: Reuter, Jonas
name: Aslanidis, Apostolos
name: Engel, Bernd
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Flexible Profile Bending
subject: Flexible Profile Forming
subject: Adjustable Forming Tools
subject: Segmented Forming Tools
subject: Transformer Tools
subject: Biegen

description: The transformation of manufacturing technology from mass production to individualized production or individualized mass production requires agile and flexible processes on the part of forming technology. To overcome the flexibility limitations of toolbound processes, adjustable tools are needed. To this end, this paper presents a finite element (FE) simulation-based parameter study of the segmentation of bending tools in modified compression bending. The bending dies were segmented into a fixed number, and the intersegment spacing, bending factor, and wall thickness factor are varied according to a full factorial experimental design. The effect of the segmentation is investigated based on strain contours, the histories of contact pressure, the histories of the longitudinal strains at the inner and outer arcs and based on the part geometry deviations from the geometry produced by conventional closed die surfaces. The main finding is that the (negative) effect of segmentation decreases with decreasing segment space and wall thickness factor and increases with increasing bending factor. Finally, these results were discussed in the light of the subordinate objective of the research project. The results allow us to conclude that the segmentation of bending dies, even for small bending radii, is a suitable approach to flexibilize bending processes through adjustable tools, so called transformer tools.
A systematic survey for eruptive young stellar objects using mid-infrared photometry
Creators: name: Scholz, Aleks
name: Froebrich, Dirk
name: Wood, Kenneth
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Accretion in young stellar objects (YSOs) is at least partially episodic, i.e. periods with high accretion rates ('bursts') are interspersed by quiescent phases. These bursts manifest themselves as eruptive variability. Here we present a systematic survey for eruptive YSOs aiming to constrain the frequency of accretion bursts. We compare mid-infrared photometry from Spitzer and WISE separated by ~5 yr for two samples of YSOs, in nearby star forming regions and in the Galactic plane, each comprising about 4000 young sources. All objects for which the brightness at 3.6 and 4.5 mu is increased by at least 1 mag between the two epochs may be eruptive variables and burst candidates. For these objects, we carry out follow-up observations in the near-infrared. We discover two new eruptive variables in the Galactic plane which could be FU Ori-type objects, with K-band amplitudes of more than 1.5 mag. One object known to undergo an accretion burst, V2492 Cyg, is recovered by our search as well. In addition, the young star ISO-Oph-50, previously suspected to be an eruptive object, is found to be better explained by a disk with varying circumstellar obscuration. In total, the number of burst events in a sample of 4000 YSOs is 1-4. Assuming that all YSOs undergo episodic accretion, this constraint can be used to show that phases of strong accretion (>10^-6 Msol/yr) occur in intervals of about 10^4 yr, most likely between 5000 and 50000 yr. This is consistent with the dynamical timescales for outflows, but not with the separations of emission knots in outflows, indicating that episodic accretion could either trigger or stop collimated large-scale outflows.
description: 14 pages, 10 figures, 1 appendix. Accepted for publication in MNRAS
title: The History of Cokeville, Wyoming
Creators: name: Lloyd, Errol Jack
Publisher: name: Utah State University
Year: 1970

description: Cokeville, Wyoming, is situated at the confluence of the Bear River and Smiths Fork valleys in southwestern Wyoming. Settled in 1874, the Cokeville area has experienced much the same political, economic, and social developments typical of other small rural towns in the western United States; but it is unlike neighboring settlements in that it was not dominated by the Church of Jesus Christ of Latter-day Saints during its early growth.

Depending upon an agricultural economic base, Cokeville has been the center of the Lincoln County sheep industry since the early 1900's. Mining has played a minor part in the economy, but never to the extent that it ever seriously threatened the livestock industry. During the last three decades there has been a resurgence of the cattle industry.

Cokeville developed in three principal stages: settlement, the boom period of growth, and finally maturity and subsequent decline. Technological improvements in communication and transportation have widened the field of association of local residents causing decline in community spirit.
Metodo dinamico de determinacion de parametros de Stokes y matrices de Mueller por analisis de Fourier
Creators: name: Gil, Jose J.
Publisher: name: Zenodo
Year: 1979
Subjects: Mueller polarimeter, dual rotating retarder, PSG-PSA, Mueller matrices, Stokes polarimeter

description: Dynamic measurement of Stokes parameters and Mueller matrices by Fourier analysis Master Degree Dissertation. University of Zaragoza. October 1979 José J. Gil The design and experimental development of a dual rotating retarder Mueller and Stokes polarimeter is described. The speed ratio of the rotating retarders is 3/2, providing 15 independent parameters of the Mueller matrix of the sample under measurement.
title: Pioneer Harmonies: Mormon Women and Music in Utah, 1847-1900
Creators: name: Fife, Jennifer L.
Publisher: name: Utah State University
Year: 1994

description: By drawing on local newspapers and the diaries, journals, and autobiographies of nearly fifty pioneers, this thesis examined the varied musical experiences of Utah's Latter-day Saint women during the years 1847-1900, and sought to determine whether they followed national gender trends in music during this era. Women in nineteenth-century Utah participated in a wide variety of musical activities, including using music in their homes, taking lessons, and teaching. Women also composed and wrote song lyrics. Many women performed in community musical events, such as concerts and operas. Despite their accomplishments, women did face conflict over the demands of family responsibility and the desire to pursue public musical careers. In some cases, women retreated from performance or even abandoned their interest.

Nonetheless, music allowed these women to enrich their personal and social lives, express their feelings on a variety of topics, bond together in both religious and political sisterhood, and involve themselves more fully in their communities. In their many musical activities, women in Utah, often regarded as a singular or isolated population because of their affiliation with the Church of Jesus Christ of Latter-day Saints, reflected changing trends for women throughout the United States. This became especially noticed as music became less a social accomplishment and more an expression of serious study through which women redefined their roles and society's acceptable standards for work and public performance.
title: Pullout Resistance of Welded Wire Mats Embedded in Soil
Creators: name: Nielsen, Mark R.
Publisher: name: Utah State University
Year: 1984

description: Welded wire mesh has been used in the past as soil reinforcement in the construction of reinforced soil embankments. Involved in the design of these embankments is the external and internal stability. The internal stability has two failure mechanisms; tension failure and pullout failure of the welded wire mesh.

This paper presents the results of laboratory tests on different sizes of welded wire mats embedded in different types of soils. These tests were performed on mats that are much larger than in previous tests. These tests measured the pullout resistance as a function of the number of embedded wires, the diameter of the wire, and the overburden pressure. This data is plotted to allow design of reinforced soil embankments in various types of soils and to compare the results with theoretical relationships.
Verfahrensentwicklung 3D Schwenkbiegen
Creators: name: Schiller, Michael
name: Frohn-Sörensen, Peter
name: Engel, Bernd
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: 3D-Schwenkbiegen
subject: Leichtbau
subject: querschnittsangepasst
subject: belastungsangepasst
subject: Umformtechnik
subject: Flexibilität
subject: Skalierbarkeit
subject: Biegen

description: Im Zuge der Individualisierung wird sich die Massenproduktion zu einer personalisierten Produktion verändern, mit zum Teil geringeren Losgrößen bei erheblicher Zunahme von Varianten. Daraus formulieren sich Forderungen nach Flexibilität in der Fertigungstechnik. Das Schwenkbiegen eignet sich als flexibles und werkzeugarmes Verfahren zur Herstellung variabler Querschnittsgeometrien. Die für das 3D Schwenkbiegen entwickelte Fertigungstechnik erweitert die Anwendungsmöglichkeiten des Basisverfahrens erheblich, indem sie die Herstellung nichtlinearer, dreidimensionaler Biegekanten zur Herstellung querschnittsvariabler und belastungsangepasster Bauteile ermöglicht. Derartige Bauteile finden sich häufig in Entwicklungen für Karosserie- und Strukturbauteile, z. B. in der Automobil- und Luftfahrtindustrie. Das Verfahren ist skalierbar und damit auf die Verarbeitung variabler Werkstückgeometrien, Werkstoffe und Rückfederungsverhalten einstellbar. Im vorliegenden Paper wird ein Verfahrensüberblick gegeben und das Arbeitsdiagramm der Fertigungstechnik 3D Schwenkbiegen vorgestellt, welches zur Bewertung und Auslegung künftiger Geometrien herangezogen werden kann.
title: Evaluation of a Welded Wire Retaining Wall
Creators: name: Bishop, Jerold Albert
Publisher: name: Utah State University
Year: 1979

description: The purpose of this paper is to evaluate the performance of a Welded Wire Retaining Wall and present design recommendations for its future use. Field data from the instrumentation of a Welded Wire Retaining Wall as well as laboratory data from a study of welded wire fabric as a reinforcing agent for soil was gathered. A study of the theory and practice of reinforced soil construction was made. On the basis of this study and the experimental data obtained, the wall is evaluated and design recommendations presented.
Laborvergleich IEC 61000-4-3: Konsequenzen für die Normung?
Creators: name: Paulwitz, Christian
name: Scheck, Simon
name: Weber, Stefan
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Der verwendete Musterprüfling entspricht dem Prüfling aus [1]. Es handelt sich um ein LED-Modul mit Anschlussleitungen, das so modifiziert wurde, dass es für elektromagnetische Felder eine ge-wisse Empfindlichkeit aufweist. Es weist vier pfeilähnliche LED-Anordnungen auf, von denen im normalen Betriebsmodus zwei leuchten. Im Falle einer Beeinflussung beginnen weitere LEDs zu leuchten oder LEDs hören auf zu leuchten. Ähnlich wie in [1] bereits beschrieben wird ein einheit-licher Prüfablauf und der genaue Aufbau des Prüflings auf einem Tisch (Bild 1) nach [2] festgelegt, das Monitoring und die Ausfallkriterien beschrieben und ein einheitliches Auswerteformular zur Verfügung gestellt. Anders als in [1] beschrieben wird die horizontale Leitungsführung auf einem Styrodurträger fixiert, um mögliche Variationen der Leitungsführung so gut wie möglich auszuschließen. Die Versor-gungsleitung wird etwa 80 cm horizontal und dann 80 cm vertikal auf den Boden geführt, wo sie anschließend mit einer CMAD (common mode absorbing device) zur Impedanzvereinheitlichung abgeschlossen wird. Eine zweite horizontale Leitung wird nur horizontal geführt. Es werden Prüfungen in beiden Antennenpolarisationen mit einer Prüfschärfe von 10 V/m im Fre-quenzband 80 MHz bis 1 GHz durchgeführt (gesucht: Frequenzgrenzen bei Prüflingsausfall) so-wie die Ausfallschwelle in V/m bei festgelegten Einzelfrequenzen (83, 110 und 200 MHz) bis ma-ximal 20 V/m. Das Testsignal wurde jeweils mit der üblichen Amplitudenmodulation von 80 % mit 1 kHz gebildet und mit einer Verweilzeit von 0,5 sec. beaufschlagt.
Proton decay and $μ\to e+γ$ Connection in a Renormalizable SO(10) GUT for Neutrinos
Creators: name: Dutta, Bhaskar
name: Mimura, Yukihiro
name: Mohapatra, Rabindra N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Supersymmetric SO(10) grand unified models with renormalizable Yukawa couplings involving {\bf 10}, {\bf 126} and {\bf 120} Higgs fields have been shown to give a very economical theory for understanding quark-lepton flavor in a unified framework. In previous papers, we showed how nucleon decay can be suppressed in these models without invoking cancellation, by choice of Yukawa flavor texture within a type II seesaw framework for neutrinos that explains all mixings and masses including the recently observed "large" $θ_{13}$. In this follow-up paper, we extend our earlier work to the case of type I seesaw and show that the recently measured "large" $θ_{13}$ can be accommodated in this case while suppressing proton decay. We then point out that the two cases (type I and II) lead to different testable predictions for $B(μ\to e+γ)$ and $B(τ\to μ(e) +γ)$ as well as different flavor final states in nucleon decay. In particular, we find that for the type I seesaw case, $B(τ\to μ+γ)$ can be observable while at the same time suppressing $B(μ\to e+γ)$, whereas in the type II seesaw case, $B(τ\to μ+γ)$ is always suppressed whereas $B(μ\to e+γ)$ is observable.
description: 27 pages, 2 figures
ASAS Photometry of ROSAT Sources. II.New Variables from the ASAS North Survey
Creators: name: Kiraga, M.
name: Stepien, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a catalog of 307 optical counterparts of the bright ROSAT X-ray sources, identified with the ASAS North survey data and showing periodic brightness variations. They all have declination north of -25 deg. Other data available from the literature for the listed stars are also included. All the tabulated stars are new variables, except for 13 previously known, for which the revised values of periods are given.
description: 14 pages, 5 figures
Alternative Werkzeugtechnik – holzbasierte Umformwerkzeuge
Creators: name: Geueke, Michael
name: Nebeling, Daniel
name: Engel, Bernd
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Umformtechnik
subject: Biegen
subject: Leichtbau
subject: Nachhaltigkeit
subject: Werkzeugtechnik
subject: Holz
subject: Biegen

description: Um die Flexibilität in einem Produktionszeitalter zu erhöhen, das durch Massenfertigung und Individualisierung gekennzeichnet ist, und gleichzeitig den geopolitischen Klimazielen gerecht zu werden, sind nachhaltigere Ansätze für die Blechumformung und das Profilbiegen erforderlich, die an die jeweiligen Fertigungsprozesse angepasst sind. Starre, metallbasierte Werkzeugsysteme erfordern große Material- und Energieressourcen, wenn hohe Flexibilität, kleine Losgrößen oder Individualisierung angestrebt werden. Um den Gesamtressourcenverbrauch zu reduzieren und den Klimaanforderungen gerecht zu werden, können nichtmetallische Werkzeugansätze diesen Problemen entgegenwirken und gleichzeitig Flexibilität und Individualisierung beim Profil und Rohrbiegen anstreben. Im Vergleich zu konventionellen Werkzeugansätzen auf Metallbasis können Umformwerkzeuge auf Holzbasis potenzielle Ressourceneinsparungen (z.B. CO2-Fußabdruck) ermöglichen und eine nachhaltige Werkzeugalternative für das Biegen von Rohren und Profilen darstellen. Obwohl die mechanische Leistungsfähigkeit von Holz geringer ist als die von konventionellem Werkzeugstahl, können bestimmte Umformwerkzeuge auf Holzbasis für diese Biegeanwendungen eingesetzt werden. Um Werkzeuge für die Umformung von Verbundwerkstoffen auf Holzbasis auslegen zu können, ist ein tieferes Verständnis der mechanischen Eigenschaften erforderlich. Diese Arbeit gibt einen Prozessüberblick für biobasierte Werkzeugalternativen in einer Machbarkeitsstudie für holzbasierte Werkzeugwerkstoffe, um die mechanische Leistungsfähigkeit von Metallrohren und -profilen für das Rotationsziehen und Freiformbiegen zu untersuchen. Zur Bestimmung der Leistungsfähigkeit werden verschiedene Verbundstrukturen (Dicke, Orientierung, Basismaterial) und Geometrien für holzbasierte Formwerkzeuge aus Robinie (Robinia pseudoacacia) untersucht. Abschließend wird festgestellt, dass die Ergebnisse ein potenzielles Prozessfenster für holzbasierte Umformwerkzeuge zum Rohr- und Profilbiegen aufzeigen.
The relation of H2CO, 12CO, and 13CO in molecular clouds
Creators: name: Di Tang, Xin
name: Esimbek, Jarken
name: Zhou, Jian Jun
name: Wu, Gang
name: Ji, Wei Guang
name: Okoh, Daniel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims. We seek to understand how the 4.8 GHz formaldehyde absorption line is distributed in the MON R2, S156, DR17/L906, and M17/M18 regions. More specifically, we look for the relationship among the H2CO, 12CO, and 13CO spectral lines. Methods. The four regions of MON R2 (60'x90'), S156 (5'0x70'), DR17/L906 (40'x60'), and M17 /M18 (70'x80')were observed for H2CO (beam 10'), H110a recombination (beam 10'), 6 cm continuum (beam 10'), 12CO (beam 1'), and 13CO (beam 1'). We compared the H2CO,12CO,13CO, and continuum distributions, and also the spectra line parameters of H2CO,12CO, and 13CO. Column densities of H2CO,13CO, and H2 were also estimated. Results. We found out that the H2CO distribution is similar to the 12CO and the 13CO distributions on a large scale. The correlation between the 13 CO and the H2CO distributions is better than between the 12CO and H2CO distributions. The H2CO and the 13CO tracers systematically provide consistent views of the dense regions. T heir maps have similar shapes, sizes, peak positions, and molecular spectra and present similar centr al velocities and line widths. Such good agreement indicates that the H2CO and the 13CO arise from similar regions.
description: 21 pages, 12 figures published, 2013
title: Ernst-Rainer Hönes, Denkmalschutz und Denkmalpflege in Rheinland-Pfalz, 1984
Creators: name: Wegner, Hans-Helmut
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Ernst-Rainer Hönes Denkmalschutz und Denkmalpflege in Rheinland-Pfalz Deutscher Gemeindeverlag Köln, Hannover, Kiel, Mainz, München 1984, Kommunale Schriften für Rheinland-Pfalz 44, 224 Seiten
Identification, cloning and characterization of the novel tenascin family member tenascin-N and conditional gene targeting of tenascin-R
Creators: name: Neidhardt, John
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Extracellular matrix
subject: tenascin family
subject: conditional knockout
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Sagina procumbens L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. procumbens L. Cat. 48. Verbreitet in allen Distrikten. Forma intermixta Beck - 3: Verbier (P.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Erweiterung der Prozessgrenzen für hochfestes mikrolegiertes Kaltband durch inkrementelles Profil-Schwenkbiegen
Creators: name: Gösling, Marco
name: Fruhstorfer, Stephanie
name: von Prondzinski, Jörg
name: Frohn-Sörensen, Peter
name: Engel, Bernd
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Stahl
subject: AHSLA
subject: mikrolegiert
subject: Profilumformung
subject: Inkrementelles Biegen
subject: Biegen

description: Mikrolegiertes Kaltband im Zugfestigkeitbereich zwischen 500 und 1000 MPa ist seit langem ein etablierter Werkstoff im Bereich automobiler Anwendungen. Die als CR500LA bis CR1000LA bezeichneten Werkstoffe werden aufgrund ihres hohen Streckgrenzenverhältnisses z.B. für Profil-Anwendungen wie Sitzschienen verwendet. Im Rahmen des hier vorgestellten Projektes wurde untersucht, in wieweit durch eine Kombination aus inkrementellem Schwenkbiegen und hochfestem mikrolegierten Kaltband die Prozessgrenzen für Stahlprofile erweitert werden können. Durch das vergleichsweise gute Lochaufweitverhältnis der mikrolegierten Sorten sind schon beim kontinuierlichen Biegen von Profilen gute Ergebnisse erzielbar. Durch die inkrementelle Verfahrensvariante und das sehr gute lokale Umformvermögen dieser Werkstoffgruppe konnten die Prozessgrenzen noch einmal erheblich erweitert werden.
title: Effects of Student Self-Management on Generalization of Student Performance to Regular Classes
Creators: name: Peterson, Lloyd Douglas
Publisher: name: Utah State University
Year: 1999

description: The use of a student self-monitoring and self-rating/teacher matching strategy to assist generalization of social skills use and decrease off-task behavior of five inner-city at-risk middle school students was investigated. A multiple-baseline design was used to assess the effects of the intervention in up to six different class settings. Results indicated that the self-monitoring and self-rating/teacher matching intervention led to an increase in correct social skills use and a decrease in off-task behaviors with all five students. These data add to the existing literature, suggesting self-monitoring with self-rating/teacher matching is an effective procedure to promote generalization of behavior. Implications for research and practice are discussed.
title: Growth and Water Relations of Native Wheatgrass Populations
Creators: name: Bell, Brian P.
Publisher: name: Utah State University
Year: 2008

description: Screening populations for development into released plant materials can be done inexpensively and in a timely manner. A common approach has been to quantify the amount of shoot dry mass produced as a surrogate for competitiveness. Besides dry mass production , other morphological characteristics have been employed , but physiological parameters have received less emphasis. Dry mass production may be an important characteristic, but identifying the traits responsible can be just as imperative . Populations with greater drought tolerance may be less impacted by competition for water from weeds, which could lead to greater establishment of desirable grasses on disturbed landscapes.

The objective for chapter 2 was to evaluate the effects of cheatgrass competition on the growth and water relations of three Snake River wheatgrass (Elymus wawawaiensis) populations and two bluebunch wheatgrass (Pseudoroegneria spicata) populations in the seedling stage in a greenhouse setting. The treatments were 1) containers with a single wheatgrass plant or 2) containers with one wheatgrass and one cheatgrass plant. Containers were watered gravimetrically to 11.5% soil-water content, regard less of treatment, every few days until harvested on day 35. Cheatgrass competition reduced root dry mass, shoot dry mass, leaf area, leaf number, tiller number, xylem pressure potential, and stomata} conductance. The bluebunch wheatgrass populations generally had more negative xylem pressure potential, higher stomatal conductance, and higher shoot dry mass, while the Snake River populations had higher specific leaf area and less negative xylem pressure potentials .

The objective for chapter 3 was to evaluate the effects of planting density on the growth and water relations over a 2-year period among five Snake River wheatgrass populations, one thickspike wheatgrass (Elymus lanceolatus) population , and three interspecific hybrids. High (25 plants/m 2 ) and low-density (7.8 plants/m2) plots of each grass were transplanted to Millville, Utah in the spring of 2005 and 2006 intended to generate low and high resource availability environments, respectively. Thickspike wheatgrass had the highest shoot dry mass and least negative xylem pressure potential , the hybrids were intermediate, and the Snake River wheatgrasses were least productive and more water stressed.

The primary benefit of this thesis will be through identifying the potential for developing these populations into improved plant materials and releasing them for commercial use in degraded rangelands across the Intermountain West. These new plant materials may also help transition damaged rangelands towards more desirable stable states composed of lower abundances of invasive annual grasses.
Einfluss verschiedener Datenformate auf frequenzabhängige mit Impedanzanalysatoren gemessene Impedanzen
Creators: name: Magdowski, Mathias
name: Hampe, Matthias
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Impedanzanalysatoren erlauben die einfache Messung von frequenzabhängigen Impedanzen an beliebigen Bauelementen über einen weiten Frequenzbereich [4] und sind somit ein wichtiges und nützlichesWerkzeug für die Erstellung von EMV-Modellen. Aus den gemessenen komplexen Impedanzen lassen sich Bauelement- und Ersatzschaltbildparameter wie Widerstand, Leitwert, Induktivität und Kapazität ableiten und berechnen. Im Gegensatz zu LCR-Metern arbeiten Impedanzanalysator nicht nur bei einzelnen Frequenzen oder wenigen Frequenzstützstellen, sondern lassen eine Messung über ein größeres und feiner gestuftes Frequenzspektrum zu. Kommerziell verfügbare Impedanzanalysatoren nutzen dabei eines der folgenden Messprinzipien: 1. direkte Strom-Spannungs-Messung (einige μHz bis einige 10MHz, etwa 10 μW bis 100 TW, Genauigkeit etwa 0,05%) [1, 2] 2. auto-balancierte Brücke, ABB (einige 10 Hz bis etwa 100MHz, etwa 10mW bis 100MW, Genauigkeit etwa 0,05%) [4] 3. hochfrequente Strom-Spannungs-Messung, Radio Frequency Current-Voltage, RF-IV (etwa 1MHz bis einige GHz, etwa 100mW bis 100 kW, Genauigkeit etwa 1%) [4] Der folgende Beitrag konzentriert sich auf Messungen mit einem Impedanzanalysator mit autobalancierter Brücke.
Microstrip filters for measurement and control of superconducting qubits
Creators: name: Longobardi, Luigi
name: Bennett, Douglas A.
name: Patel, Vijay
name: Chen, Wei
name: Lukens, James E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Careful filtering is necessary for observations of quantum phenomena in superconducting circuits at low temperatures. Measurements of coherence between quantum states requires extensive filtering to protect against noise coupled from room temperature electronics. We demonstrate distributed transmission line filters which cut off exponentially at GHz frequencies and can be anchored at the base temperature of a dilution refrigerator. The compact design makes them suitable to filter many different bias lines in the same setup, necessary for the control and measurement of superconducting qubits.
Umformen mit plastischen Wirkmedien
Creators: name: Hermes, Matthias
name: Holstein, Viktor
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Hydroforming
subject: Wirkmedien
subject: IHU
subject: Rohrumformen
subject: Profilumformen
subject: Biegen
subject: Blechumformen
subject: Biegen

description: Es wird ein neues Verfahren zur Herstellung von komplex geformten dünnwandigen Blechprofilen mit Hilfe eines plastischen Wirkmediums vorgestellt. Dabei wird der Prozessablauf, sowie die praktische Umsetzung und Auswertung der ersten Bauteile gezeigt. Des Weiteren wird eine Verfahrensanalyse mittels eines FE-Modells vorgestellt, die anhand von praktischen Versuchen validiert wurde, und zur Vorhersage der Prozessparameter herangezogen werden kann.
New Insights into the Role of Cortical Hyperexcitability in the Neurotypical Population predisposed to Aberrant Experiences.
Creators: name: Joshi, Shalmali
Publisher: name: Lancaster University
Year: 2022
Subjects: Cortical hyperexcitability
Cortical hyperexcitability index II
Transcranial Direct Current Stimulation
rVLPFC
prefrontal cortex
Body-Threat Assessment Battery
BTAB
multisensory integration
Hallucinations
aberrant experiences
Self-awareness
Transcranial Magnetic Stimulation
MtDCS
TMS
EMG
Visual hallucinations
interoception
Skin conductance responses (SCRs)
FaceReader

description: Broadly, aberrant experiences are categorised as aberrant perceptual experiences, aberrant body / self-experiences and aberrant beliefs. There is growing evidence that cortical hyperexcitability underlies many aberrant perceptual experiences such as hallucinations, illusions, distortions etc. in the visual domain. Predisposition to these experiences has been associated with a hyperexcitable visual cortex but has not been explored with aberrant body experiences. Given that many conditions and disorders contain both aberrant perceptual and aberrant body experiences, predisposition to cortical hyperexcitability may not be limited to the visual and extra striate cortices and may be involved in mediating atypical cognitive affective states underlying aberrant body experiences. This would then provide evidence for a functional overlap between neural networks involved in certain aberrant perceptual and aberrant body experiences. In part, the main concern with researching aberrant experiences has been the lack of standardised diagnostic tools and methodologies. The present work therefore additionally aimed to explore novel methodological approaches in examining cognitive affective biases underpinning aberrant body experiences. This thesis is comprised of three empirical studies. Chapter 2 assessed the reliability and utility of methodological improvements made to the newly devised Body-Threat Assessment Battery (BTAB – Braithwaite et al., 2020) as a salient tool in examining aberrant body experiences and associated increases in autonomic activity (as measured by skin conductance responses (SCRs) in addition to introducing a novel FaceReader method as a second objective psychophysiological measure. Chapter 3 investigated whether predisposition to cortical hyperexcitability mediated efficacy of applied brain stimulation (using Multi-channel Transcranial Direct Current – MtDCS) to the right ventrolateral prefrontal cortex (rVLPFC) which has been identified as an important structure in emotion regulation and cognitive affective states as part of multi-sensory integration and aberrant body experiences. Finally, Chapter 4 explored the role of interoceptive vulnerability in alternative therapeutic strategies (repetitive Transcranial Magnetic Stimulation – rTMS) in maintaining corticomotor efficiency (primary motor cortex – M1) following upper arm immobilisation. Collectively, this thesis extends and provides new insights, methodologically and theoretically, into cognitive affective biases underlying aberrant experiences.
The way forward in rotary draw bending: a review
Creators: name: Kaleem, Muhammad Ali
name: Frohn-Sörensen, Peter
name: Geueke, Michael
name: Engel, Bernd
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Rotary draw bending
subject: Additive manufacturing
subject: Forming tools
subject: Process parameters
subject: Biegen

description: Presently, Rotary Draw Bending (RDB) process is one of the most common tube bending techniques used in industrial production around the world. The process is executed on a specially designed machine being fitted with specific forming tools. The quality of final products in RDB largely depends on process parameters being selected by the machine operator. These process parameters are selective balance of movements and effect of forming tools on the tubes. Substantial development has been done in identification of optimum process parameters for improving the quality of bent tubes. Each process parameter has a unique and versatile effect on quality aspects like ovality, wrinkling and fracture of the tubes. This reviewbased research is focused on gathering published information on so-far identified process parameters in RDB and their eventual effect on the tube’s quality. In the end, authors present their own perspective about the future of a RDB process. The authors perspective suggests merging of AM (Additive Manufacturing) with conventional RDB process to impart enhanced efficiency and improved quality to forming tools and bent products respectively. Apropos, a concept of hybrid pressure die is presented which encompasses manufacturing of a fundamental forming tool (pressure die) using AM techniques. The suggested model of hybrid forming tools opens a new avenue for industrialists to manufacture more flexible, cost effective and substantially beneficial tools for the RDB process in future.
Impact assessment of neonicotinoid insecticides on the reproductive biology of the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae)
Creators: name: Ako, Mouhoube
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Neonicotinoid insecticides
subject: imidacloprid
subject: Tetranychus urticae
subject: life table
subject: carboxylesterase
subject: superoxide dismutase
subject: metabolism
subject: 6-chloronicotinic acid
subject: within-plant distribution
subject: nitrogen fertilization
subject: Dewey Decimal Classification::500 | Naturwissenschaften::590 | Tiere (Zoologie)

description: [no abstract]
Influencing geometric stability in free-form bending by exploiting non-tangential bending
Creators: name: Maier, Daniel
name: Scandola, Lorenzo
name: Werner, Matthias
name: Volk, Wolfram
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: free-form bending
subject: non-tangential bending
subject: heat-treatment
subject: batch fluctuations
subject: Biegen

description: Free-form bending is a kinematics-based bending process, which offers a wide flexibility for bending arbitrary 3D-geometries. Especially in the automotive sector, it can represent an optimal process for the bending of structural components in high strength materials from the prototyping up to the series production, due to the reduction of tooling costs and the ease of process adjustment. Nevertheless, it still requires a complex design of the kinematics of the bending die in order to obtain the part in the desired tolerance range. In this contribution, the effect of different kinematic strategies on the geometrical stability of the process is investigated. First, the principles of tangential and non-tangential bending (under- and overbending) are described. Successively, the strategies are tested on different semi-finished parts before and after different heat treatments to simulate inhomogenities in the materials. Finally, the results are discussed, and it is found, that the overbending strategy allows to reduce the fluctuations in the obtained bending radius and angle, hence improving the stability and reproducibility of the process.
title: Untersuchungen zur Steingerät-Grundformproduktion der Kulturschichtenfolgen vom Zigeunerfels und der Jägerhaushöhle (Spätpaläolithikum - Mesolithikum)
Creators: name: Bauche, Rolf-Dieter
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
Inorganic salt nanofibers as templates for the formation of oxide nanotubes
Creators: name: Ren, Lirong
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Oxide nanotubes
subject: template
subject: nanofibers
subject: sol-gel process
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Coded aperture compressive temporal imaging
Creators: name: Llull, Patrick
name: Liao, Xuejun
name: Yuan, Xin
name: Yang, Jianbo
name: Kittle, David
name: Carin, Lawrence
name: Sapiro, Guillermo
name: Brady, David J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We use mechanical translation of a coded aperture for code division multiple access compression of video. We present experimental results for reconstruction at 148 frames per coded snapshot.
description: 19 pages (when compiled with Optics Express' TEX template), 15 figures
Astrophysical tests of atomic data important for stellar Mg abundance determinations
Creators: name: Mashonkina, Lyudmila
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Magnesium abundances of cool stars with different metallicities are important for understanding the galactic chemical evolution. This study tests atomic data used in stellar magnesium abundance analyses. We evaluate non-local thermodynamical equilibrium (NLTE) line formation for Mg I using the most up-to-date theoretical and experimental atomic data available so far and check the Mg abundances from individual lines in the Sun, four well studied A-type stars, and three reference metal-poor stars. With the adopted gf-values, NLTE abundances derived from the Mg I 4703 A, 5528 A, and Mg Ib lines are consistent within 0.05 dex for each A-type star. The same four Mg I lines in the solar spectrum give consistent NLTE abundances at $\log N_{\rm Mg}/N_{\rm H} = -4.45$, when correcting the van der Waals damping constants inferred from the perturbation theory. Inelastic Mg+H collisions as treated by Barklem, Belyaev, Spielfiedel, Guitou, and Feautrier serve as efficient thermalizing process for the statistical equilibrium of Mg I in the atmospheres of metal-poor stars. The use of the Mg+H collision data improves Mg abundance determinations for HD 84937 and HD 122563, though does not remove completely the differences between different lines.
description: Accepted for publication in A&A as Research Note, includes 5 tables and 2 figures
Integration junger Aussiedler und Spätaussiedler in Deutschland : Studie zur derzeitigen Situation
Creators: name: Sekler, Koralia
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Integration
subject: Spätaussiedler
subject: Identität
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: [no abstract]
Stellaria apetala
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. apetala Ard. Nach JACCARD (Cat. XLIV und 48) für das Wallis zweifelhafte Art. Neuerdings angegeben von G. BEAUVERD von zwei Stellen in Distr. l: zwischen Les Granges und Van-d'en Bas (Beauverd 1938) und Le Trétien (Coquoz und Beauverd1938) (vgl. Beauverd Lit. 1940a, S.430). Die Pflanzen von beiden Fundorten (BEAUVERD in herb.Boissier) gehörenjedoch zu S.procumbens (det. Becherer 1953). BEAUVERD'S Angaben sind daher zu streichen,und die Art bleibt weiterhin für das Wallis nicht belegt.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556