Publikationen


5833 Publikationen gefunden
    DigitalMaschinenbau und Mechatronik

    Beitrag (Sammelband oder Tagungsband)

    Jochen Hiller, R. Tutsch, M. Bartscher, U. Neuschaefer-Rube, Borges de Oliveira, F.

    Multi-Material Acceptance Testing for CT-Based Coordinate Measurement Systems

    Proceedings of the 12th International Conference on Measurement and Quality Control

    2019

    ISBN: 3030181766

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Beitrag (Sammelband oder Tagungsband)

    Günther Ruhl, T. Ullrich, Benedikt Winter, Raimund Förg, Alois Kasberger

    Entwicklung einer wasserdichten LED Flächenleuchte mit direkt im Glas eingebrachtem Konvertermaterial

    Poster

    DGaO Proceedings zur 120. Jahrestagung (11.-15.06.2019; Darmstadt)

    2019

    GesundEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    Irmgard Tischner, H. Malson, K. Fey

    Leading ladies: discursive constructions of women leaders in the UK media

    Feminist Media Studies, no. Published online: 10 July 2019

    2019

    DOI: 10.1080/14680777.2019.1640266

    Abstract anzeigen

    Women continue to be economically disadvantaged and under-represented in positions of power and leadership. A discursive disjunction between cultural and media representations of women and leadership has been implicated in these continuing inequalities. We address this issue through an analysis of the ways in which prominent women leaders were portrayed in a UK radio series, BBC Radio 4’s “Profile” broadcast between July 2011 and July 2013. Verbatim transcripts of 12 broadcasts featuring women were analysed within a critical feminist framework, to explore the ways in which these women leaders were discursively constructed. Our analysis explicates three constructions of “women leaders”: as “traditionally” feminine; as having to balance “masculine” and “feminine” attributes; and as exceptional women who may nevertheless fail. We conclude that the impact of equality legislation continues to be limited while androcentric norms prevail and that we therefore need more gynocentric ways of imagining women leaders.

    DigitalMobilTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    M. Kepka Vichrová, Laura Fiegler, Wolfgang Dorner, M. Kepka, P. Hájek, Mariann Juha

    Peregrinus Silva Bohemica

    A Digital Travel Guide for Navigation Assistance

    Proceedings of the 2019 9th International Conference on Advanced Computer Information Technologies (ACIT) [June 5-7, 2019; České Budějovice, Czech Republic]

    2019

    Angewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Marcus Dittrich

    Union membership and employment dynamics: The role of the union objective function

    Theoretical Economics Letters, vol. 9, no. 5, pp. 1473-1479

    2019

    DOI: 10.4236/tel.2019.95094

    Abstract anzeigen

    This paper studies the behaviour of a labour union in a model with employment and membership dynamics. It is known from the literature that the relative level of employment between intertemporal and static union models is affected by the structure of the union density function. We show that this result does not hold in general but rather that it depends on the union objective function. If the union maximises the wage bill of their members, employment in the intertemporal model will differ from employment in the static model depending on the union density function. However, if the union maximises the rent from unionisation, the intertemporal model will yield the same level of employment as the static model regardless of the union density.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Patent

    Günther Ruhl, M. König

    Schichtstruktur und Verfahren zur Herstellung einer Schichtstruktur

    2019

    MobilMaschinenbau und MechatronikTC Cham

    Beitrag (Sammelband oder Tagungsband)

    Continental Automotive GmbH, Frank Denk

    Cyberphysische Systeme - Moderne Entwicklungen aus dem Embedded Bereich und der Mechatronik

    Elektromagnetismus, Esslingen

    2019

    DigitalElektrotechnik und MedientechnikInstitut ProtectIT

    Beitrag (Sammelband oder Tagungsband)

    Martin Schramm, Karl Leidl, Robert Wildenauer

    Hacking an optics manufacturing machine: You don't see it coming?!

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2526691

    Abstract anzeigen

    With more and more industrial devices getting inter-connected the attack surface for cyber attacks is increasing steadily. In this paper the possible approach of an attacker who got access to the office network at the Institute for Precision Manufacturing and High-Frequency Technology (IPH) to attack one of the optic machines that reside in another network segment is presented. Based on known vulnerabilities from the Common Vulnerabilities and Exposures (CVE), like the shellshock exploit or remote code execution with PsExec, for devices identified in the network, an attacker can bypass the firewall between the office network and the laboratory network and get full access to the HMI of the target machine.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    M. Pohl, R. Boerret, Rolf Rascher, U. Bielke, Olga Kukso

    MSF-error prevention strategies for the grinding process

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2526581

    Abstract anzeigen

    This research is focused on the link between manufacturing parameters and the resulting mid-spatial frequency error in the manufacturing process of precision optics. This third publication focuses on strategies of avoidance and generation mechanisms of the mid-spatial frequency errors from the grinding process. The Goal is to understand the generation mechanisms of the mid-spatial frequency errors and avoid their appearance in the manufacturing process.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Gerald Fütterer, Simon Wittl, Lucas Bauer, Michael Wagner

    Alignment and thermal drift aspects of a four-tilted-mirror student project telescope

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2530076

    Abstract anzeigen

    The Deggendorf Institute of Technology (DIT) and its Faculty of Applied Natural Sciences and Industrial engineering transfer a broad spectrum of knowledge to the students. The clarification of the interrelations that exist between seemingly isolated fields of knowledge is a permanent process. In order to put this into practice, a telescope construction project was started. The base of the in-house student project is the Technology Campus in Teisnach, which bundles capacities for process development, production and measurement of high-precision optics, including telescope optics. A first optical design, which is based on a subset of the parameter space published in 1989 by M. Brunn1, 2 (later built by D. Stevick as f/12-system3 ), made use of a primary mirror M1 with a diameter of 400 mm. An f/8-system provide a Strehl ratio SR ≥ 0.8 over an entire field of view of 0.7° deg. Even if this seems to be sufficient, manufacturing tolerances, adjustment tolerances, thermal drift and positional changes considerably reduce the Strehl ratio. In order to obtain reliable values of acceptable tolerances, statistical Monte Carlo analyses had been carried out. As consequences, the tube design was changed and the design of new mirror mounts started. This was done to achieve the required stiffness. The new tube designs, one based on carbon-fiber-reinforced polymer (CFRP) and one based on FeNi36, had been tested by using FEM analysis. In addition, the practicability of deep learning based aberration detection was tested. Zernike polynomials obtained by analyzing the star images with a Convolutional Neuronal Network (CNN). The current state of the development is described.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Gerald Fütterer

    Wave front sensing for metrology by using optical filter

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2530013

    Abstract anzeigen

    An interferometric problem is the limited fringe density, which is due to the limited allowed slope difference of superimposed wave fronts. Thus, the angular dynamic range of measurable surfaces and objects under test is limited. In other words, all shapes that deviate from a plane surface or a sphere represent a measuring problem in interferometers, or require an individually adapted null optics, which might cost e.g. 10 k∈ or more. In addition, ground surfaces cannot be measured in standard interferometers, except by using Speckle interferometry, which is limited in resolution. Freeform optics are very problematic. Even when polished, only tactile or confocal coordinate measurement might work. Several interferometers address the problem of the angular deviation to a sphere. For instance, lateral stitching on a curved surface, which is equivalent to the best-fit sphere, or longitudinal stitching is used. To use a tilted wave interferometer for asphere metrology is another option, which provides versatile measurement configurations. The approach discussed here is to use optical filters. The development of this technique is part of a project most recently started at the Technology Campus in Teisnach. The surface under test (SUT) is imaged onto an optical filter, which has a calibrated angular selectivity. Thus, the angles of the local wave front normal vectors are transferred into an intensity distribution. A set of angular measurements enables reduced uncertainty of the wave front measurement. Aspects as e.g. the working principle, boundary conditions and the identification of practical filters are discussed in the paper.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Jakob Reitberger, Rolf Rascher, Johannes Liebl, Sebastian Sitzberger

    Zero-point clamping systems in optical production

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2528774

    Abstract anzeigen

    Zero point clamping systems are an integral part of the manufacturing industry. They have only yet to find their way into the optical industry. This article compares the hydraulic expansion holder, a clamping system currently used in the optical industry with a zero-point clamping system. The achievable accuracies of both systems are compared over several measurement series. In addition, the process capability evaluation is used for the comparison. Finally, the results are summarized to provide every researcher and practitioner with a foundation for assessing whether zero point clamping systems meet the requirements for the use in optical manufacturing.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Christine Wünsche, S. Höfer, Jessica Stelzl

    Processing of a new nonlinear optical crystal for continuous wave UV-laser applications

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2528140

    Abstract anzeigen

    Lasers have been known for a long time and are used in a wide variety of fields such as industrial and material processing or measuring and control technology. A new application is being tested which aims to use continuous wave UV-lasers in metrology. For this application a nonlinear optical crystal is needed. Its processing is developed in a two-year project at the Institute for Precision Manufacturing and High-Frequency Technology of Deggendorf Institute of Technology. The crucial factor for the full optical performance in the UV range is the low roughness of the crystal surface, as it is installed between two prisms and the contactability between them should be ensured. In China, a nonlinear crystal that meets the requirements has already been designed and a production process for the raw crystal has been established. However, since the production of optically homogenous crystals has proven to be difficult, the availability of such is very limited. For this reason, a reference material with similar hardness and material behaviour is used in the process development in order not to be limited in the number of trials. It is important to be able to transfer the results from the reference material in an analogous way to the original crystal. One challenge of the project lies in the crystal thickness, since only a maximum thickness of three millimetres can be achieved for the purest form of the crystal required in the application. Therefore, it is important to handle the material sparingly during the process. In addition, the small dimensions of about ten to five millimetres and the brittleness of the material pose a problem. The goal of the project will be to develop a process that can circumvent all these problems so that small roughness of the crystal can be achieved by precision polishing.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Christine Wünsche, S. Herr, S. Mechold, Emilio Zambrano

    Cleaning effects in optical layers: error characteristics and analysis methods

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2527974

    Abstract anzeigen

    In the course of the ever-increasing demand of high-performance optical components, dielectric coating processes are the key technology for the refinement of optics, ensuring their functionality. These optics are based on optical interference coatings, which are formed by a layer stack of alternating transparent single layers of high and low refractive index material. Assuming that turbidity as well as defects embedded in coatings are considered as a primary factor limiting the quality of optical coatings, the level of cleaning the substrates before coating has to be extremely high. Particular importance is attached to the interface between the layer stack and the substrate, especially to the interaction during the transition from the glass surface to the coating during the manufacturing process. This interaction is assumed to be caused by polishing, by corrosion during storage time or by effects during cleaning of the substrate before coating. Thus, it is necessary to characterize each type of defect and to define which technique is adequate to analyze each one of them efficiently. The project aims to raise the awareness and knowledge in terms of what happens during the coating process and, in particular, to understand the physical processes at the substrate during the manufacturing process. After analyzing the material flow, first focus was set on the cleaning procedure. It is assumed that one of the main influences on defects in the interface is the chemical cleaning. Chemical reactions on the surface of the glass substrate may occur due to additional effects of external components and elevated temperature in the washing basins.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Rolf Rascher, Johannes Liebl, S. Killinger

    Mid-spatial frequency errors in feed direction occurring in ADAPT polishing

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

    2019

    DOI: 10.1117/12.2528114

    Abstract anzeigen

    Previous work shows the effectiveness of computer controlled polishing (CCP) with the ADAPT tool by Satisloh for correcting form errors in optics manufacturing. This method however has a risk of producing residual errors in the range of mid spatial frequency errors (MSFE). In order to prevent these errors the residual in feed direction is investigated as well as the behavior at different parameters.

    GesundAngewandte Gesundheitswissenschaften

    Buch (Monographie)

    Bernhard Bleyer

    Pragmatische Urteile in der unmittelbaren Patientenversorgung

    Moraltheorie an den Anfängen Klinischer Ethikberatung

    Gesundheit und Medizin im interdisziplinären Diskurs, Berlin

    2019

    ISBN: 9783662586723

    GesundAngewandte Gesundheitswissenschaften

    Beitrag (Sammelband oder Tagungsband)

    Bernhard Bleyer

    Bedingungen einer katholischen Moraltheologie in der Wissenschaft

    Die Wissenschaftlichkeit der Theologie: Band 2: Katholische Disziplinen und ihre Wissenschaftstheorien (Studien zur systematischen Theologie, Ethik und Philosophie), Münster, vol. 13/2

    2019

    ISBN: 978-3402119181

    GesundAngewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    S. Kuphal, S. Lamm, Melanie Kappelmann-Fenzl, S. Meierjohann, L. Feuerer, S. Haferkamp, C. Hellerbrand, A. Bosserhoff, I. Henz

    Role of MIA (melanoma inhibitory activity) in melanocyte senescence

    Pigment Cell & Melanoma Research, no. First Published: 06 June 2019

    2019

    DOI: 10.1111/pcmr.12801

    Abstract anzeigen

    The protein MIA is known to be expressed in melanoma and to support melanoma progression. Interestingly, previous studies also observed the expression of MIA in nevi. Concentrating on these findings, we revealed that MIA expression is correlated with a senescent state in melanocytes. Induction of replicative or oncogene‐induced senescence resulted in increased MIA expression in vitro. Notably, MIA‐knockdown in senescent melanocytes reduced the percentage of senescence‐associated beta‐Gal‐positive cells and enhanced proliferation. Using the melanoma mouse model Tg(Grm1), MIA‐deficient mice supported the impact of MIA on senescence by showing a significantly earlier tumor onset compared to controls. In melanocytes, MIA‐knockdown led to a downregulation of the cell cycle inhibitor p21 in vitro and in vivo. In contrast, after induction of hTERT in human melanoma cells, p21 regulation by MIA was lost. In summary, our data show for the first time that MIA is a regulator of cellular senescence in human and murine melanocytes.

    DigitalNachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenIPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Werner Bogner, Johannes Jakob, R. Sammer, Franz Xaver Röhrl, Stefan Zorn

    WR12 to planar transmission line transition on organic substrate

    Proceedings of the 49th European Microwave Conference (EuMC)/European Microwave Week (EuMW) 2019 (September 29-October 4, 2019; Paris, France)

    2019

    DigitalElektrotechnik und MedientechnikTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Rainer Pöschl, Stefan Kunze, Alexander Weinberger

    A Software Defined Radio Based Implementation for the Radio Frequency Analysis of Signals from Unmanned Aerial Systems

    Proceedings of the 29th International Conference Radioelektronika 2019 (April 16-18, 2019; Pardubice, Czech Republic)

    2019