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Suche nach „[Nachhaltig]“ hat 1316 Publikationen gefunden
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    MobilNachhaltigF: Angewandte InformatikS: TC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Jane Wuth, Wolfgang Dorner

    Modell zur Übertragbarkeit der Ergebnisse aus der Feldstudie auf größere Regionen

    Berücksichtigung aktueller technischer und organisatorischer Rahmenbedingungen beim Einsatz autonomer Shuttlebusse

    Autonome Shuttlebusse im ÖPNV, Berlin, Heidelberg

    2019

    ISBN: 978-3-662-59405-6

    Abstract anzeigen

    Heutzutage sind automatisierte Shuttlebusse noch eher selten im öffentlichen Straßenverkehr zu finden. Feldstudien sind daher unumgänglich, um eine Analyse der existierenden Möglichkeiten und nötigen technischen Maßnahmen zur Integration dieser Fahrzeuge in den öffentlichen Personennahverkehr (ÖPNV) zu erproben. Da es sowohl technisch als auch rechtlich noch Einschränkungen der Nutzung automatisierter Fahrzeuge gibt, stellt sich die Frage, ob potenzielle Routen, die diesen Rahmenbedingungen gerecht werden, automatisiert ermittelt werden können. Allerdings ist die Erstellung eines Modells zur Identifikation von Strecken für automatisierte Fahrzeuge unter den gegebenen rechtlichen Randbedingungen noch nicht näher betrachtet worden. Die hier verwendeten Parameter sind auf Grundlage der Ergebnisse einer Studie in Bad Birnbach, Bayern entstanden. Im Vergleichsraum Bayern wurden ca. 100 Strecken identifiziert, auf welchen man einen automatisierten Shuttlebus im derzeitigen technisch-rechtlichen Rahmen weiter testen könnte. Die sich stetig weiterentwickelnde Technologie und die teils unvollständige Attribuierung der verwendeten Daten (offizielle Verkehrsdaten ATKIS, OpenStreetMap aus dem Jahr 2018) erfordern eine Überprüfung der Ergebnisse vor Ort sowie eine laufende Fortschreibung des Modells.

    DigitalNachhaltigF: Elektrotechnik und MedientechnikI: Institut ProtectIT

    Beitrag (Sammelband oder Tagungsband)

    Michael Heigl, Laurin Dörr, Martin Schramm, D. Fiala

    On the Energy Consumption of Quantum-resistant Cryptographic Software Implementations Suitable for Wireless Sensor Networks

    Proceedings of the 16th International Joint Conference on e-Business and Telecommunications (July 26-28, 2019; Prague, Czech Republic), vol. Vol. 2 (SECRYPT 2019 : 16th International Conference on Security and Cryptography)

    2019

    DOI: 10.5220/0007835600720083

    Abstract anzeigen

    For an effective protection of the communication in Wireless Sensor Networks (WSN) facing e.g. threats by quantum computers in the near future, it is necessary to examine the applicability of quantum-resistant mechanisms in this field. It is the aim of this article to survey possible candidate schemes utilizable on sensor nodes and to compare the energy consumption of a selection of freely-available software implementations using a WSN-ready Texas Instruments CC1350 LaunchPad ARM® Cortex®-M3 microcontroller board.

    DigitalNachhaltigF: Elektrotechnik und MedientechnikI: Institut ProtectIT

    Beitrag (Sammelband oder Tagungsband)

    Laurin Dörr, Michael Heigl, D. Fiala, Martin Schramm

    Comparison of Energy-Efficient Key Management Protocols for Wireless Sensor Networks

    Proceedings of the 2019 International Electronics Communication Conference (IECC '19) [July 7-9, 2019; Okinawa, Japan]

    2019

    DOI: 10.1145/3343147.3343156

    Abstract anzeigen

    A Wireless Sensor Network (WSN) contains small sensor nodes which monitor physical or environmental conditions. WSN is an important technology for digitalization of industrial periphery and is often used in environments which are not hardened against security impacts. These networks are easy to attack due to the open communication medium and low computing resources of the applied devices. Establishing security mechanisms is difficult while taking into account low energy consumption. Low cost sensors with limited resources make the implementation of cryptographic algorithms even more challenging. For WSNs cryptographic functions are needed without high impact on energy consumption and latency. Therefore, security in WSNs is a challenging field of research. This paper compares lightweight energy-efficient key exchange protocols which are suitable for WSN. The protocols were also implemented in WSN-capable Texas Instrument boards and the energy consumption was measured during the key exchange. This paper shows that schemes have to be chosen depending on the specific network requirements and that the usage of asymmetric cryptography does not always result in a high energy consumption.

    NachhaltigF: Elektrotechnik und MedientechnikS: TC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Melanie Piser, Roland Zink, Sebastian Wöllmann

    Smart Landscapes and PUBinPLAN - Digital Participation for Creating Sustainable Rural Regions

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

    2019

    DOI: 10.1109/ACITT.2019.8779892

    Abstract anzeigen

    This paper discusses the impact of ICT for creating sustainable rural regions. An empirical analysis of 255 Bavarian communes in 2018 showed, that there is a lack of digital content on the communes' homepages. New ideas are needed for participation and communication in rural communes. To close this gap, PUB in PLAN, a digital participation platform was initiated. This platform is the basement for new, smart and effective participation projects using digital and analog forms of moderation for sustainable and intelligent city developments.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: TAZ Spiegelau

    Vortrag

    Alois Kasberger, Benedikt Winter, T. Ullrich, Stefan Menzel, Raimund Förg

    Precision Glass Molding of Light Emitting Optics, Containing Phosphors Directly Embossed into Glass

    6th Conference on Manufacturing, Tolerancing and Testing of Optical Systems, München

    2019

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: TC Teisnach Sensorik

    Beitrag (Sammelband oder Tagungsband)

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

    Entwicklung einer wasserdichten LED Flächenleuchte mit direkt im Glas eingebrachtem Konvertermaterial

    Poster

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

    2019

    NachhaltigS: TC Freyung

    Vortrag

    Jane Wuth, Javier Valdés, Luis Ramirez Camargo, Wolfgang Dorner

    Energy Modelling in Rural Areas with Spatial and Temporal Data in Germany and Czech Republic

    6th International Conference on Geographical Information Systems Theory, Applications and Management (GISTAM), Heraklion, Kreta, Greece

    2019

    NachhaltigS: TC Freyung

    Vortrag

    M. Roithner, Jane Wuth, Luis Ramirez Camargo

    Using spatiotemporal data to evaluate renewable electricity self-sufficiency of municipalities and states in Bavaria and the Czech Republic

    European Geosciences Union (EGU) General Assembly 2019, Wien, Österreich

    2019

    NachhaltigS: TC Freyung

    Vortrag

    Jane Wuth, Luis Ramirez Camargo, Wolfgang Dorner

    A spatially explicit assessment of middle and low voltage grid requirements in Bavaria until 2050

    Sympozium GIS Ostrava 2019, Ostrava, Tschechische Republik

    2019

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: TC Teisnach Sensorik

    Patent

    M. König, Günther Ruhl

    Schichtstruktur und Verfahren zur Herstellung einer Schichtstruktur

    2019

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

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

    MSF-error prevention strategies for the grinding process

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [9-10 April 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.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Gerald Fütterer, Michael Wagner, Lucas Bauer, Simon Wittl

    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 [9-10 April 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.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH 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 [9-10 April 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.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Sebastian Sitzberger, Johannes Liebl, J. Reitberger, Rolf Rascher

    Zero-point clamping systems in optical production

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [9-10 April 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.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Jessica Stelzl, Christine Wünsche, S. Höfer

    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 [9-10 April 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.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

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

    Cleaning effects in optical layers: error characteristics and analysis methods

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [9-10 April 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.

    NachhaltigF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: IPH Teisnach

    Beitrag (Sammelband oder Tagungsband)

    Simon Killinger, Johannes Liebl, Rolf Rascher

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

    Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [9-10 April 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.

    DigitalNachhaltigS: TC Freyung

    Vortrag

    Melanie Piser

    Smart Landscapes and PUBinPLAN - Digital participation for creating sustainable rural regions

    2019 9th International Conference on Advanced Computer Information Technologies (ACIT), České Budějovice, Tschechien

    2019

    MobilNachhaltigF: Elektrotechnik und MedientechnikS: TC Freyung

    Vortrag

    Markus Eider

    Nutzerorientierte Empfehlungen für Lithium-Ionen-Batterien in Elektrofahrzeugen

    Posterpräsentation

    6. Tag der Forschung, Deggendorf

    2019

    DigitalNachhaltigF: Elektrotechnik und MedientechnikS: TC Freyung

    Vortrag

    Christina Sigl, Siegfried Hildebrand

    Smart Grid: Technologien für ländliche Gebiete

    Posterpräsentation

    6. Tag der Forschung, Deggendorf

    2019