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Suche nach „[Mobil]“ hat 334 Publikationen gefunden
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    DigitalMobilF: Elektrotechnik und MedientechnikI: Institut ProtectIT

    Beitrag (Sammelband oder Tagungsband)

    Michael Heigl, Martin Schramm, D. Fiala

    A Lightweight Quantum-Safe Security Concept for Wireless Sensor Network Communication

    Proceedings of the IEEE Annual International Conference on Pervasive Computing and Communications Workshops (March 11-15, 2019; Kyoto, Japan)

    2019

    ISBN: 978-1-5386-9150-2

    DOI: 10.1109/PERCOMW.2019.8730749

    Abstract anzeigen

    The ubiquitous internetworking of devices in all areas of life is boosted by various trends for instance the Internet of Things. Promising technologies that can be used for such future environments come from Wireless Sensor Networks. It ensures connectivity between distributed, tiny and simple sensor nodes as well as sensor nodes and base stations in order to monitor physical or environmental conditions such as vibrations, temperature or motion. Security plays an increasingly important role in the coming decades in which attacking strategies are becoming more and more sophisticated. Contemporary cryptographic mechanisms face a great threat from quantum computers in the near future and together with Intrusion Detection Systems are hardly applicable on sensors due to strict resource constraints. Thus, in this work a future-proof lightweight and resource-aware security concept for sensor networks with a processing stage permeated filtering mechanism is proposed. A special focus in the concepts evaluation lies on the novel Magic Number filter to mitigate a special kind of Denial-of-Service attack performed on CC1350 LaunchPad ARM Cortex-M3 microcontroller boards.

    DigitalMobilF: Elektrotechnik und MedientechnikS: TC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Simon Graf, Raphaela Pagany, Wolfgang Dorner, A. Weigold

    Georeferencing of road infrastructure from photographs using computer vision and deep learning for road safety applications

    Proceedings of the 5th International Conference on Geographical Information Systems Theory, Applications and Management (GISTAM) [May 3-5, 2019; Heraklion, Greece], vol. Vol. 1

    2019

    DOI: 10.5220/0007706800710076

    MobilF: Elektrotechnik und MedientechnikS: TC Freyung

    Zeitschriftenartikel

    Raphaela Pagany, Anna Marquardt, Roland Zink

    Electric Charging Demand Location Model—A User- and Destination-Based Locating Approach for Electric Vehicle Charging Stations

    Sustainability, vol. 11, no. 8

    2019

    DOI: 10.3390/su11082301

    Abstract anzeigen

    In recent years, with the increased focus on climate protection, electric vehicles (EVs) have become a relevant alternative to conventional motorized vehicles. Even though the market share of EVs is still comparatively low, there are ongoing considerations for integrating EVs in transportation systems. Along with pushing EV sales numbers, the installation of charging infrastructure is necessary. This paper presents a user- and destination-based approach for locating charging stations (CSs) for EVs—the electric charging demand location (ECDL) model. With regard to the daily activities of potential EV users, potential positions for CSs are derived on a micro-location level in public and semipublic spaces using geographic information systems (GIS). Depending on the vehicle users’ dwell times and visiting frequencies at potential points of interest (POIs), the charging demand at such locations is calculated. The model is mainly based on a survey analyzing the average time spent per daily activity, regional data about driver and vehicle ownership numbers, and the georeferenced localization of regularly visited POIs. Optimal sites for parking and charging EVs within the POIs neighborhood are selected based on walking distance calculations, including spatial neighborhood effects, such as the density of POIs. In a case study in southeastern Germany, the model identifies concrete places with the highest overall demand for CSs, resulting in an extensive coverage of the electric energy demand while considering as many destinations within the acceptable walking distance threshold as possible.

    DigitalMobilF: Elektrotechnik und MedientechnikI: Institut ProtectIT

    Zeitschriftenartikel

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

    A Resource-Preserving Self-Regulating Uncoupled MAC Algorithm to be Applied in Incident Detection

    Computers & Security, vol. 85, no. August, pp. 270-285

    2019

    DOI: 10.1016/j.cose.2019.05.010

    Abstract anzeigen

    The connectivity of embedded systems is increasing accompanied with thriving technology such as Internet of Things/Everything (IoT/E), Connected Cars, Smart Cities, Industry 4.0, 5G or Software-Defined Everything. Apart from the benefits of these trends, the continuous networking offers hackers a broad spectrum of attack vectors. The identification of attacks or unknown behavior through Intrusion Detection Systems (IDS) has established itself as a conducive and mandatory mechanism apart from the protection by cryptographic schemes in a holistic security eco-system. In systems where resources are valuable goods and stand in contrast to the ever increasing amount of network traffic, sampling has become a useful utility in order to detect malicious activities on a manageable amount of data. In this work an algorithm – Uncoupled MAC – is presented which secures network communication through a cryptographic scheme by uncoupled Message Authentication Codes (MAC) but as a side effect also provides IDS functionality producing alarms based on the violation of Uncoupled MAC values. Through a novel self-regulation extension, the algorithm adapts it’s sampling parameters based on the detection of malicious actions. The evaluation in a virtualized environment clearly shows that the detection rate increases over runtime for different attack scenarios. Those even cover scenarios in which intelligent attackers try to exploit the downsides of sampling.

    DigitalMobilF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    V. Dürr, P. Arena, H. Cruse, Ch.J. Dallmann, A. Drimus, T. Hoinville, T. Krause, Stefan Mátéfi-Tempfli, J. Paskarbeit, L. Patane, M. Schilling, J. Schmitz, R. Strauss, A. Vitanza, A. Schneider

    Integrative Biomimetics of Autonomous Hexapedal Locomotion

    Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) [November 3-8, 2019; Macau, China]

    2019

    Abstract anzeigen

    Despite substantial advances in many different fields of neurorobotics in general, and biomimetic robots in particular, a key challenge is the integration of concepts: to collate and combine research on disparate and conceptually disjunct research areas in the neurosciences and engineering sciences. We claim that the development of suitable robotic integration platforms is of particular relevance to make such integration of concepts work in practice. Here, we provide an example for a hexapod robotic integration platform for autonomous locomotion. In a sequence of six focus sections dealing with aspects of intelligent, embodied motor control in insects and multipedal robots—ranging from compliant actuation, distributed proprioception and control of multiple legs, the formation of internal representations to the use of an internal body model—we introduce the walking robot HECTOR as a research platform for integrative biomimetics of hexapedal locomotion. Owing to its 18 highly sensorized, compliant actuators, light-weight exoskeleton, distributed and expandable hardware architecture, and an appropriate dynamic simulation framework, HECTOR offers many opportunities to integrate research effort across biomimetics research on actuation, sensory-motor feedback, inter-leg coordination, and cognitive abilities such as motion planning and learning of its own body size.

    MobilF: Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Zeitschriftenartikel

    C. Tilk, Michael Drexl, S. Irnich

    Nested Branch-and-Price-and-Cut for Vehicle Routing Problems with Multiple Resource Interdependencies

    European Journal of Operational Research, vol. 276, no. 2, pp. 549-565

    2019

    DOI: 10.1016/j.ejor.2019.01.041

    Abstract anzeigen

    This paper considers vehicle routing problems (VRPs) with multiple resource interdependencies and addresses the development and computational evaluation of an exact branch-and-price-and-cut algorithm for their solution. An interdependency between two resources means that the two resource consumptions influence one another in such a way that a tradeoff exists between them. This impacts the feasibility and/or the cost of a solution. The subproblem in branch-and-price-and-cut procedures for VRPs is very often a variant of the shortest-path problem with resource constraints (SPPRC). For the exact solution of many SPPRC variants, dynamic-programming based labeling algorithms are predominant. The tradeoffs in problems with multiple resource interdependencies, however, render the application of labeling algorithms unpromising. This is because complex data structures for managing the tradeoff curves are necessary and only weak dominance criteria are possible, so that the labeling algorithm becomes almost a pure enumeration. Therefore, we propose to solve also the SPPRC subproblem with branch-and-price-and-cut. This results in a two-level, nested branch-and-price-and-cut algorithm. We analyze different variants of the algorithm to enable the exchange of columns and also rows between the different levels. To demonstrate the computational viability of our approach, we perform computational experiments on a prototypical VRP with time windows, minimal and maximal delivery quantities for each customer, a customer-dependent profit paid for each demand unit delivered, and temporal synchronization constraints between some pairs of customers. In this problem, tradeoffs exist between cost and load and between cost and time.

    MobilF: Elektrotechnik und MedientechnikS: TC Freyung

    Zeitschriftenartikel

    Raphaela Pagany, Wolfgang Dorner

    Do Crash Barriers and Fences Have an Impact on Wildlife-Vehicle Collisions? An Artificial Intelligence and GIS-Based Analysis

    ISPRS International Journal of Geo-Information, vol. 8, no. 2

    2019

    DOI: 10.3390/ijgi8020066

    Abstract anzeigen

    Wildlife–vehicle collisions (WVCs) cause significant road mortality of wildlife and have led to the installation of protective measures along streets. Until now, it has been difficult to determine the impact of roadside infrastructure that might act as a barrier for animals. The main deficits are the lack of geodata for roadside infrastructure and georeferenced accidents recorded for a larger area. We analyzed 113 km of road network of the district Freyung-Grafenau, Germany, and 1571 WVCs, examining correlations between the appearance of WVCs, the presence or absence of roadside infrastructure, particularly crash barriers and fences, and the relevance of the blocking effect for individual species. To receive infrastructure data on a larger scale, we analyzed 5596 road inspection images with a neural network for barrier recognition and a GIS for a complete spatial inventory. This data was combined with the data of WVCs in GIS to evaluate the infrastructure’s impact on accidents. The results show that crash barriers have an effect on WVCs, as collisions are lower on roads with crash barriers. In particular, smaller animals have a lower collision share. The risk reduction at fenced sections could not be proven as fenced sections are only available at 3% of the analyzed roads. Thus, especially the fence dataset must be validated by a larger sample number. However, these preliminary results indicate that the combination of artificial intelligence and GIS may be used to analyze and better allocate protective barriers or to apply it in alternative measures, such as dynamic WVC risk-warning.

    DigitalMobilI: Zentrum für Akademische WeiterbildungP: DEG-DLM2

    Zeitschriftenartikel

    Andreas Gegenfurtner, Nina Schwab, Christian Ebner

    "There's no need to drive from A to B": Exploring the lived experience of students and lecturers with digital learning in higher education

    Bavarian Journal of Applied Sciences, vol. 4, no. 1, pp. 310-322

    2018

    DOI: 10.25929/bjas.v4i1.50

    Abstract anzeigen

    In vielen ländlichen Regionen weltweit nehmen Menschen den Bus oder das Auto, um zu Städten zu gelangen, in denen Bildungsangebote und Trainingsprogramme angeboten werden. In einer Zeit wachsender Digitalisierung werden Lernumgebungen und Weiterbildungen jedoch zunehmend auf Online-Plattformen zugänglich gemacht. Studierende haben so Zugang zu digitalem Lernmaterial oder können an technologiebasierten Veranstaltungen von jedem Ort weltweit partizipieren. Diese wachsende ubiquitäre Verfügbarkeit von Bildung ‒ zusammen mit einer geographischen Flexibilität, die Blended Learning in Form von LernCentern, Webkonferenzen und virtuellen Kursen ermöglicht ‒ reduziert die Notwendigkeit von (Auto-)Mobilität in vielen ländlichen Regionen. Der Zweck dieser Studie war, die Erfahrungen von nichttraditionellen Studierenden und deren Dozierenden hinsichtlich reduzierter mobiler Anforderungen zu explorieren. Basierend auf Gibsons Theory of Affordances und einem Forschungsinteresse in der narrativen Interpretation lebensumweltlicher Erfahrung berichtet die Studie qualitative Analysen von reflexivem Interviewmaterial, das beschreibt, wie Teilnehmende und Dozierende die flexiblen, ubiquitär verfügbaren, synchron und asynchron angebotenen Weiterbildungsangebote wahrnehmen. Implikationen der Studie werden diskutiert hinsichtlich Theorieentwicklung und der praktischen Implementierung digitaler Bildung für nicht-traditionelle Studierende in ländlichen Regionen.

    MobilF: Europan Campus Rottal-Inn

    Sonstiges

    Georg Steckenbauer

    2nd International Congress on Tourism, Economic and Business Sciences

    2018

    MobilNachhaltigF: Europan Campus Rottal-Inn

    Sonstiges

    Georg Steckenbauer

    Tourism Naturally Conference (TNC) 2018

    2018

    MobilF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    Katerina Volchek, H. Song, R. Law, D. Buhalis

    Forecasting London Museum Visitors Using Google Trends Data

    Proceedings of the ENTER2018 eTourism Conference

    2018

    Abstract anzeigen

    Information search is an indicator of tourist interest in a specificservice and potential purchase decision. User online search patterns are a well-known toolfor forecasting pre-trip consumerbehaviour, such as hotel demand and international tourist arrivals. However, the potential of search engine data for estimating thedemand for tourist attractions, which is created both before and during a trip, remains underexplored. This research note investigates the relationships between Google search queries for the most popular London museums and actual visits to theseattractions. Preliminary findings indicatehigh correlation between monthly series data. Search query data isexpected togenerate reliable forecasts ofvisits toLondon museums.

    MobilF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: TC Cham

    Vortrag

    Frank Denk, Continental Automotive GmbH

    Induktives Laden - Technologien und Standards

    Symposium Elektromagnetismus 2018, Hochschule Heilbronn/Künzelsau

    2018

    MobilF: Angewandte Naturwissenschaften und WirtschaftsingenieurwesenS: TC Cham

    Beitrag (Sammelband oder Tagungsband)

    Frank Denk, Continental Automotive GmbH

    Induktives Laden - Technologien und Standards

    Elektromagnetismus, Esslingen

    2018

    ISBN: 9783943563016

    MobilF: Angewandte Wirtschaftswissenschaften

    Vortrag

    Melanie Hazod

    Perspectives of railway stations of rail passenger transport in rural areas: Spatial effectiveness of additional businesses in the model region Eastern Bavaria

    4. Jahreskonferenz des Netzwerks INDIGO (Internet und Digitalisierung Ostbayern), Deggendorf

    2018

    MobilF: Angewandte Wirtschaftswissenschaften

    Vortrag

    Melanie Hazod

    Ideenzug: Innovative Konzepte für einen nachhaltigen und kundenorientierten Regionalverkehr der Zukunft

    Posterpräsentation

    4. Jahreskonferenz des Netzwerks INDIGO (Internet und Digitalisierung Ostbayern), Deggendorf

    2018

    MobilF: Elektrotechnik und MedientechnikS: TC Freyung

    Vortrag

    Markus Eider, Andreas Berl

    Verlängerte Batterielebensdauer von Elektrofahrzeugen durch dynamische Nutzungsempfehlungen

    4. Jahreskonferenz des Netzwerks INDIGO (Internet und Digitalisierung Ostbayern), Deggendorf

    2018

    MobilF: Europan Campus Rottal-Inn

    Vortrag

    Georg Steckenbauer

    Use of natural resources to create sustainable health tourism destinations

    2nd International Congress on Tourism, Economic and Business Sciences, Kocaeli, Türkei

    2018

    DigitalMobilF: Europan Campus Rottal-Inn

    Zeitschriftenartikel

    de Oliveira Hansen, R. M. D., M. Mátéfi-Tempfli, R. Safonovs, J. Adam, S. Chemnitz, T. Reimer, B. Wagner, W. Benecke, Stefan Mátéfi-Tempfli

    Magnetic films for electromagnetic actuation in MEMS switches

    Microsystem Technologies, vol. 24, no. 4, pp. 1987-1994

    2018

    DOI: 10.1007/s00542-017-3595-2

    Abstract anzeigen

    This paper investigates the fabrication of magnetic films via electroplating to be applied into electromagnetic actuated micro electro-mechanical systems (MEMS) switches. Cobalt and nickel films (1 µm thicknesses) were deposited on gold coated silicon substrates via electrochemical deposition. Different deposition conditions were investigated, regarding temperature and deposition voltage. The films morphologies were characterized via atomic force microscopy, while the magnetic properties of the films were characterized via vibrating sample magnetometer measurements. In order to evaluate the integration of these magnetic films into MEMS switches with low energy consumption, a mathematical model was developed and the results show that these films can be applied into efficient actuation with reduced power dissipation.

    MobilF: Angewandte WirtschaftswissenschaftenS: TC Grafenau

    Zeitschriftenartikel

    Mohammed Alnahhal, Diane Ahrens

    A Simulation-Based System for Calculating Optimal Numbers of Forklift Drivers in Industrial Plants

    Bavarian Journal of Applied Sciences, vol. 4, no. 1, pp. 354-369

    2018

    DOI: 10.25929/bjas.v4i1.53

    Abstract anzeigen

    Dieser Artikel beschreibt eine Optimierungsmethode für ein Materialtransportsystem von Gabelstaplern mittels Warteschlangentheorie und Simulation. Ziel ist es, verschiedene Arten von Verschwendung bei den Kapazitätskosten, verspäteten Arbeitsaufträgen und Transportkosten zu reduzieren. Es wird eine gewisse ITInfrastruktur angenommen, wie etwa die Verwendung von Monitoren, um die aktuellen Arbeitsaufträge von verschiedenen Arbeitsplätzen anzuzeigen. Mathematische Gleichungen werden benutzt, um anfängliche obere und untere Grenzen für die benötigten Kapazitätsniveaus zu finden. Danach wird eine Simulation für verschiedene Kapazitätsniveaus innerhalb des Bereichs der theoretischen Ergebnisse durchgeführt, um die genau benötigte Mannzeit für verschiedene Jobsequenzierungsstrategien zu finden. Mit Hilfe der Statistiksoftware R wird ein Tool erstellt, welches Unternehmen für verschiedene Parameter Ergebnisse liefert. Diese Ergebnisse zeigen die Auswirkungen der Verwendung von Batching, unter Berücksichtigung der Begrenzung des Zeilenseitenraums und der Reduzierung der Leerfahrtstrategie für Leistungsmessungen. Die Strategie, das Leerfahren zu reduzieren, indem nach dem nächsten Arbeitsplatz gesucht wird, der einen Auftrag benötigt, ist nicht so effizient, da es die benötigte Kapazität erhöht. Dies liegt daran, dass es die Variabilität der Wartezeit vergrößert und somit den Prozentsatz der verspäteten Bestellungen steigert.