Publikationen


Suche nach „[Wolfgang] [Dorner]“ hat 153 Publikationen gefunden
Suchergebnis als PDF
    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

    DigitalMobilElektrotechnik und MedientechnikTC Freyung

    Beitrag (Sammelband oder Tagungsband)

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

    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 (May 3-5, 2019; Heraklion, Greece]

    2019

    MobilElektrotechnik und MedientechnikTC 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 Internation 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.

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Javier Valdés, Luis Ramirez Camargo, Y. Masip Macia, Wolfgang Dorner

    Assessment of on-site steady electricity generation from renewable energy sources in Chile

    Energy Procedia (Contributions to the 10th International Conference on Applied Energy ICAE 2018), vol. 158

    2019

    DOI: 10.1016/j.egypro.2019.01.266

    Abstract anzeigen

    Chile has an immense renewable energy potential but their integration in the energy system constitutes a major challenge. The complex topography of the country, the isolation of the different electric grids and the variability of renewable energy sources, makes energy transmission from locations with high variable renewable power generation potential to the demand centres not an easy task. The present study aims at assessing the potential of combining solar power, wind power and storage systems to provide steady loads already from the source. Such a combination should take advantage of complementarity between variable renewable sources and serves to simplify their integration in the energy system. The analysis relies on an optimization model to size hybrid renewable energy systems and 10 years of weather data from the brand new ERA-5 reanalysis. Necessary system sizes to constantly generate 1 MWh of electricity for every hour during the period 2008-2017 are calculated for all possible locations across the country. The results show that the necessary generation and storage capacities to provide a steady energy output are very high even for areas with exceptionally high renewable energy potential.

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Wolfgang Dorner, K. Gruber, F. Nitsch

    Hybrid renewable energy systems to supply electricity to self-sufficient residential buildings in Central Europe

    Energy Procedia (Contributions to the 10th International Conference on Applied Energy ICAE 2018), vol. 158

    2019

    DOI: 10.1016/j.egypro.2019.01.096

    Abstract anzeigen

    This work evaluates potentials of photovoltaic and battery systems with additional micro-generation wind turbines (10.5 kW) to cover electricity demand of residential users in two countries in Central Europe. It relies on high-resolution regional reanalysis data and a techno-economical optimization model. Maps showing the number of wind turbines, photovoltaic and battery systems sizes necessary to supply electricity for clusters of electricity self-sufficient single-family houses across Germany and the Czech Republic are generated. No general trends that apply for the two countries concerning the relation between the sizes of the different technologies were identified. However, it was possible to determine several large areas where the inclusion of small wind turbines decreases the total system costs and considerably reduces the required storage capacities. Results are discussed and compared to previous work on self-sufficient single-family houses.

    NachhaltigElektrotechnik und MedientechnikTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Wolfgang Dorner, K. Gruber, F. Nitsch

    Assessing regional reanalysis data sets for planning small-scale renewable energy system

    20th EGU General Assembly, EGU2018, Proceedings from the conference held 4-13 April, 2018 in Vienna, Austria, p.4996

    2018

    Abstract anzeigen

    An accurate resource availability estimation is vital for proper location, sizing and economic viability of renewable energy plants. Large photovoltaic (PV) and wind installations undergo a long and exhaustive planning process that would imply unacceptably high costs for developers of small-scale installations. In a context of abolition of feed-in tariffs, electricity feed-in restricted by grid capacity constraints and storage systems being commercialized at lower costs, the acquisition of high quality solar radiation and wind speed data becomes important also for planners of small scale installations. These data allow the characterization of short-term and inter-annual variability of the resources availability. Global reanalysis data sets provide long time series of these variables with temporal resolutions that can be as high as one hour and at no cost for the final user. However, due to the coarse spatial resolution and relatively low accuracy these products only provide an inferior alternative for data retrieval compared to e.g. satellite derived radiation data sets or advanced interpolation methods for wind speed data. The COSMO-REA6 and COSMOS-REA2 regional reanalysis overcome this limitation by increasing the resolution of the reanalysis to six and two kilometres respectively. The accuracy of these data sets for variables with high relevancy for meteorology, such as rainfall, has been assessed with satisfactory results but an independent evaluation for variables relevant for renewable energy generation has not been performed yet. This work presents an assessment of the variables of these data sets that have been made available to the public until November 2017. This assessment is performed for the area of the federal state of Bavaria in Germany and whole Czech Republic using data of the Bavarian agro-meteorological network and the Czech Hydrometeorological Institute. Accuracy indicators are calculated for horizontal global radiation or cloud coverage (depending on data availability from the weather stations) and wind speeds at 10 meters height. While there are important differences between weather stations and cloud coverage data, the results for wind speeds and global solar irradiance are satisfactory for most of the locations. For certain locations widely used indicators such as the Pearson's correlation coefficient reach values above 0.8 for wind speeds and above 0.9 for global solar irradiance and the mean biased error is consistently lower than 10 W/m2 and can be as low as 0.3 W/m2 for the irradiance data and is, with a few exceptions, lower than 2 m/s in Germany and lower than 1 m/s in the Czech Republic for wind speed data. A total of eight indicators for the hourly data in the period between 1995 and 2015 are calculated, presented, discussed and compared against international literature dealing with data accuracy for solar irradiance and wind speed data sets.

    DigitalMobilElektrotechnik und MedientechnikTC Freyung

    Zeitschriftenartikel

    Raphaela Pagany, Wolfgang Dorner

    Achtung Wildwechsel! Wie ein dynamische GIS-Lösung hilft, Unfälle zu verhindern

    arcAKTUELL: Operational Intelligence - Vorausschauend planen, no. 3, pp. 60-61

    2018

    DigitalElektrotechnik und MedientechnikTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Anne Weinfurtner, Wolfgang Dorner, Simon Graf

    Uncertainty in the Spatial Metadata of Historical Photographs: A Geomatic and Photogrammetric Driven Argumentation

    Proceedings of the Sixth International Conference on Technological Ecosystems for Enhancing Multiculturality (TEEM) 2018 (October 24-26, 2018; Salamanca, Spain), New York, NY

    2018

    ISBN: 978-1-4503-6518-5

    DOI: 10.1145/3284179.328432

    DigitalElektrotechnik und MedientechnikTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Wolfgang Dorner, F. Eiler, Simon Graf

    Artificial Intelligence and the Automatic Classification of Historical Photographs

    Proceedings of the Sixth International Conference on Technological Ecosystems for Enhancing Multiculturality (TEEM) 2018 (October 24-26, 2018; Salamanca, Spain), New York, NY

    2018

    ISBN: 978-1-4503-6518-5

    DOI: 10.1145/3284179.3284324

    DigitalElektrotechnik und MedientechnikTC Freyung

    Zeitschriftenartikel

    Anne Weinfurtner, J. Fesl, M. Vohnoutová, K. Paclíková, Wolfgang Dorner, K. Horníčková, M. Preusz, L. Dostálek

    Geoinformatics and Crowdsourcing in Cultural Heritage: A Tool for Managing Historical Archives

    AGRIS on-line Papers in Economics and Informatics, vol. 10, no. 2, pp. 73-83

    2018

    DOI: 10.7160/aol.2018.100207

    Abstract anzeigen

    Archives of historical photographs have a great potential for "geo- or spatial sciences", for they can provide highly relevant visual data on historical landscapes, populated places and settlement structures, including those now destroyed. Processing of these archives represents many challenges, among them the application of geoinformatic concepts and information technologies. The article presents the example of geo-referencing, crowdsourcing, and other computer-based technologies applied to the archival photographs of today-destroyed sites on the Czech – Bavarian border, where many villages, farm sites and monuments were destroyed in the 1950s or abandoned as a consequence of post-WWII development. In the situation of dramatically changing landscape and land use, historical photographs are an important source of documentation for both research and virtual reconstruction of disappeared places, landscape, and society.

    MobilElektrotechnik und MedientechnikTC Freyung

    Zeitschriftenartikel

    Luis Ramirez Camargo, Raphaela Pagany, Wolfgang Dorner

    A review of spatial localization methodologies for the electric vehicle charging infrastructure

    International Journal of Sustainable Transportation, pp. 1-17

    2018

    DOI: 10.1080/15568318.2018.1481243

    Abstract anzeigen

    With view to the high share of the transport sector in total energy consumption, e-mobility should play an important role within the transition of the energy systems. Policymakers in several countries consider electric vehicles (EV) as an alternative to fossil-fueled vehicles. In order to allow for the development of EV, the charging infrastructure has to be set up at locations with high charging potential, identified by means of various criteria such as demand density or trip length. Many methodologies for locating charging stations (CS) have been developed in the last few years. First, this paper presents a broad overview of publications in the domain of CS localization. A classification scheme is proposed regarding modeling theory and empirical application; further on, models are analyzed, distinguishing between users, route or destination centricity of the approaches and outcomes. In a second step, studies in the field of explicit spatial location planning are reviewed in more detail, that is, in terms of their target criteria and the specialization of underlying analytical processes. One divergence of these approaches lies in the varying level of spatial planning, which could be crucial depending on the planning requirements. It is striking that almost all CS locating concepts are proposed for urban areas. Other constraints, such as the lack of extensive empirical EV traffic data for a better understanding of the driving behavior, are identified. This paper provides an overview of the CS models, a classification approach especially considering the problem’s spatial dimension, and derives perspectives for further research.

    NachhaltigTC Freyung

    Zeitschriftenartikel

    Luis Ramirez Camargo, Wolfgang Dorner, K. Gruber, F. Nitsch

    Mapping minimum technical requirements for electricity self-sufficiency of single-family houses using regional reanalysis data and satellite imagery derived data

    Geophysical Research Abstracts, vol. 20, no. EGU2018-12577

    2018

    Abstract anzeigen

    Decreasing prices of photovoltaic (PV) and electricity storage systems have popularized the idea of independency from the grid among household's owners. The basic idea is simple: on the one side, PV installations can easily fit in building's roof-tops while producing more energy per year than a household would require; on the other side, the temporal mismatch between energy generated by the PV system and the electricity consumed by the household can be corrected with storage systems. In theory, this basic concept would require the examination of long time series of weather data and an optimization model in order to find a system configuration that actually fulfils the requirements of a household in a particular location. In practice, such detailed studies would be too expensive for small-scale installations and contractors take system sizing decisions based on empirical values or general sizing guidelines. Motivated by the project CrossEnergy, a research project that studies the future of the energy system in rural areas at the border between Germany and Czech Republic, and by the publication of the COSMO-REA high resolution regional reanalysis data sets for Europe in 2017, this study presents a methodology to generate maps indicating minimum battery and PV sizes for self-sufficient single family houses (SFHs). The methodology consist of three parts. First, settlement data extracted from the LUISA Territorial Modelling platform of the European Commission is used together with standard load profiles to generate spatiotemporal data sets of electricity demand for rural and low density urban areas. Second, spatiotemporal data sets of PV potential are generated based on a) a technical PV model, b) instantaneous solar irradiance and temperature data from the COSMO-REA regional reanalysis data, and c) snow cover data from the Land Surface Analysis Satellite Applications Facility. Third, a linear optimization model, relying on the data sets of the two previous parts, serves to define PV and battery systems sizes and to generate the corresponding maps. The resulting maps cover Germany and Czech Republic and are generated for multiple technical and weather dependent scenarios. The results show how complicated it could be to achieve a complete independence from the grid in certain locations and offer a scientifically based source of information for sizing PV-battery systems in the two countries. An outlook how to apply the methodology to the whole CORDEX Euro area and for future work is provided.

    NachhaltigElektrotechnik und MedientechnikTC Freyung

    Zeitschriftenartikel

    Luis Ramirez Camargo, Wolfgang Dorner, K. Gruber, F. Nitsch

    Electricity self-sufficiency of single-family houses in Germany and the Czech Republic

    Applied Energy, vol. 228, no. 15 October 2018, pp. 902-915

    2018

    DOI: 10.1016/j.apenergy.2018.06.118

    Abstract anzeigen

    Motivated by a research project that studies the future of the energy system in rural areas at the border between Germany and the Czech Republic, and by the publication of the COSMO-REA high-resolution regional reanalysis data sets for Europe in 2017, this study presents a methodology for generating maps indicating minimum battery and photovoltaics sizes for self-sufficient single-family houses. The methodology consists of three subsequent parts: First, spatiotemporal data sets of electricity demand for single-family houses in rural and low-density urban areas are generated. Second, spatiotemporal data sets of photovoltaics potential are computed based on (a) a technical photovoltaics model, (b) two decades of hourly solar irradiance and temperature data, and (c) snow cover data from the Land Surface Analysis Satellite Applications Facility. Third, a linear optimization model serves to define photovoltaics and battery systems sizes and to generate the corresponding maps. The resulting maps cover Germany and the Czech Republic and are generated for 18 technical and weather-dependent scenarios. The results show how challenging it could be to achieve complete independence from the grid in certain locations. Especially relevant for the sizing of the systems are long periods (several days in a row) of low photovoltaic energy generation due to overcast sky conditions or snow cover of the panels. Furthermore, the results offer a scientifically based source of information for sizing photovoltaics and battery systems in the two countries.

    DigitalElektrotechnik und MedientechnikTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Anne Weinfurtner, K. Paclíková, Wolfgang Dorner, K. Horníčková, M. Preusz, L. Dostálek

    Crowd basierte Verortung historischer Fotografien und Konzepte zur verbesserten Aufarbeitung historischer Archive mit Hilfe geoinformatischer Konzepte – Methodischer Ansatz des EU Projektes PhotoStruk

    Kulturelles Erbe erfassen und bewahren - Von der Dokumentation zum virtuellen Rundgang (Tagungsband zur 37. Wissenschaftlich-Technischen Jahrestagung der Deutschen Gesellschaft für Photogrammetrie, Fernerkundung und Geoinformation e. V. (DGPF)), vol. 26

    2017

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Wolfgang Dorner, G. Stoeglehner, Paul Rauch

    Energiezonenplanung Plus (EZP+): Open-source Tool für die Planung von Fernwärmenetzen anhand von hochaufgelösten räumlich-zeitlichen Daten

    AGIT 3-2017, Berlin; Offenbach/Main

    2017

    ISBN: 978-3879076338

    DigitalTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Raphaela Pagany, A. Weinzierl, Wolfgang Dorner, Thomas Geiß, M. Heurich

    wuidi, das Wildwechsel-Radar - methodische und technologische Ansätze

    Unfallforschung 2017, Göttingen, vol. 3

    2017

    ISBN: 978-3736994997

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Raphaela Pagany, Wolfgang Dorner

    Optimal sizing of active solar energy and storage systems for energy plus houses

    Proceedings of the 11th ISES EuroSun Conference - International Conference on Solar Energy for Buildings and Industry (October 11-14 2016; Palma de Mallorca, Spain), https://doi.org/10.18086/eurosun.2016.01.08

    2016

    DOI: 10.18086/eurosun.2016.01.08

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Wolfgang Dorner

    Integrating satellite imagery-derived data and GIS-based solar radiation algorithms to map solar radiation in high temporal and spatial resolutions for the province of Salta, Argentina

    Proceedings of the SPIE Remote Sensing Conference - Earth Resources and Environmental Remote Sensing/GIS Applications (September 27-29 2016; Edinburgh, GB)

    2016

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Wolfgang Dorner

    Impact of small-scale storage systems on the photovoltaic penetration potential at the municipal scale

    Energy Procedia (Special Issue: European Geosciences Union General Assembly 2016 - Division Energy, Resources and Environment [ERE], EGU 2016), April 17th-22nd 2016; Vienna, Austria), vol. 97

    2016

    NachhaltigTC Freyung

    Beitrag (Sammelband oder Tagungsband)

    Luis Ramirez Camargo, Wolfgang Dorner

    Impact of small-scale storage systems on the photovoltaic penetration potential at the municipal scale

    Geophysical Research Abstracts, vol. 18

    2016