TY - CHAP A1 - Fechner, Hubert A1 - Lugmaier, Andreas T1 - Nationale Technologieplattform Smart Grids Austria – intelligente Stromnetze für die zukünftige Energieversorgung T2 - e&i KW - Smart Grids KW - Energy Supply Y1 - 2019 ER - TY - CHAP A1 - Fechner, Hubert A1 - López-Polo, Assun T1 - Photovoltaik Technologie Roadmap Österreich T2 - 11.Symposium Energieinnovation, TU Graz (Steiermark) KW - Photovoltaics Y1 - 2019 ER - TY - JOUR A1 - Schidler, Susanne A1 - Jandl, Robert A1 - Büchsenmeister, Richard T1 - Praktikable Kriterien objektivieren JF - Forstzeitung KW - Sustainability Y1 - 2019 IS - 120(9) ER - TY - CHAP A1 - Fechner, Hubert A1 - Brunner, Helfried T1 - Smart Grid Roadmap For Austria T2 - CIRED Workshop, Lyon (France) KW - Smart Grids Y1 - 2019 ER - TY - CHAP A1 - Hieger, Christof T1 - Steuerung von Industrierobotern / Humanoide Roboter KW - Robotics Y1 - 2019 SP - 156 EP - 159 PB - Fachbuchverlag Leipzig im Carl Hanser Verlag ER - TY - JOUR A1 - Schidler, Susanne T1 - Nachhaltige Entwicklung – Beispiele aus dem Bereich Erneuerbare Rohstoffe / Energien JF - AMS Forschungsnetzwerk / Arbeitsmarktservice Österreich, Abt. Arbeitsmarktforschung und Berufsinformation / AMS INFO KW - Sustainability KW - Renewable Energy KW - Renewable Raw Materials Y1 - 2019 ER - TY - CHAP A1 - Fechner, Hubert A1 - Watt, Greg T1 - Photovoltaic market and industry trends – latest results from the IEA PVPS Program T2 - e&i KW - Photovoltaics Y1 - 2019 ER - TY - CHAP A1 - Fechner, Hubert T1 - High Penetration Photovoltaics in Electricity Grids T2 - Invited lecture at 45th IEEE-International Conference on Microelectronics, Devices and Materials, Postojna (Slovenia) KW - Photovoltaics Y1 - 2019 ER - TY - CHAP A1 - Fechner, Hubert T1 - Direkte Solartechnologien als besondere Chance für Österreichs Wirtschaft T2 - e&i KW - Solar Technology Y1 - 2019 ER - TY - JOUR A1 - Bhat, Karthik Subramanya A1 - Ganglbauer, Johanna A1 - Bosch, Elina T1 - Techno–economic simulation and evaluation of scalable ‘energy cells’ locally generating renewable energy JF - e & i Elektrotechnik und Informationstechnik N2 - The ERA-Net SES project Regional Renewable Energy Cells (R2EC) [1] aims at developing a scalable system for decentralized, interacting ‘energy cells’ with a high concentration of locally generated renewable energy. ‘Energy cells’ are essentially Renewable Energy Communities (ECs) in the European context. The system aims at maximizing the utilization of locally generated renewable energy through Electrical Storage (ES) as well as high-electric applications like e‑heating, Heat Pumps (HPs), and E‑Vehicles (EVs). The system is also designed to interact with other energy cells locally, thus, improving the utilization of locally generated energy. A variety of different adjacent energy cells in three countries, Austria (AT), Belgium (BE), and Norway (NO), are analyzed, and the results are used for the development of regional and renewable energy cell systems. This approach aims at developing tailor-made solutions that meet the different local and regional requirements and the electrical energy demand of the observed energy cells. A unique opportunity is created, as the three countries are at varying levels of regional development in the field of energy communities, and the regional requirements and conditions differ significantly. A comprehensive investigation of the technical and economic viability of the ECs in the three regions is conducted on a simulation level. The technical simulation results show an increased self-consumption of individual users and the overall cell in all of the observed testbeds, while the economic analysis shows economic benefits at varying levels in each of the observed testbeds. The implemented R2EC system ascertains both technical and economic viability in the observed testbeds. KW - Energy Cells KW - Renewable energy KW - Energy Communities KW - Self-consumption Y1 - IS - 139 SP - 612 EP - 620 ER - TY - JOUR A1 - Lang, Moritz T1 - The mechanism of scale-invariance JF - Automatica N2 - A system is invariant with respect to an input transformation if we can transform any dynamic input by this function and obtain the same output dynamics after adjusting the initial conditions appropriately. Often, the set of all such input transformations forms a Lie group, the most prominent examples being scale-invariant (, ) and translational-invariant () systems, the latter comprising linear systems with transfer function zeros at the origin. Here, we derive a necessary and sufficient normal form for invariant systems and, by analyzing this normal form, provide a complete characterization of the mechanism by which invariance can be achieved. In this normal form, all invariant systems (i) estimate the applied input transformation by means of an integral feedback, and (ii) then apply the inverse of this estimate to the input before processing it in any other way. We demonstrate our results based on three examples: a scale-invariant “feed-forward loop”, a bistable switch, and a system resembling the core of the mammalian circadian network. KW - Invariant systems KW - Normal form KW - Adaptive systems KW - Transmission zeros Y1 - VL - 140 IS - June 2022 ER - TY - CHAP A1 - Lugmaier, Andreas A1 - Brunner, Helfried A1 - Prüggler, Wolfgang A1 - Glück, Natalie A1 - Kupzog, Friederich A1 - Fechner, Hubert A1 - Tauschek, Ursula A1 - Rieder, Thomas A1 - Derler, Karl A1 - Mühlberger, Thomas T1 - RoadmapSmart Grids Austria Der Weg in die Zukunft der elektrischen Stromnetze!Pathway to the future of electrical power grids! T2 - FEEI – Fachverband der Elektro- und Elektronikindustrie / Österreichs E-Wirtschaft KW - Smart Grids Y1 - 2019 ER - TY - JOUR A1 - Kubinger, Wilfried A1 - Peschak, Bernhard A1 - Wöber, Wilfried A1 - Sulz, Clemens T1 - Bildgebende Sensorsystems für robotische Systeme in der Agrar- und Landtechnik JF - e&i Elektrotechnik und Informationstechnik KW - Sensor KW - Robotics KW - Agriculture Y1 - 2018 VL - 134 IS - 6 SP - 316 EP - 322 ER - TY - JOUR A1 - Hagauer, Josef A1 - Matlschweiger, Ulrich A1 - Tippelreither, Christian A1 - Lutz, Markus A1 - Hribernig, Thomas A1 - Lackner, Maximilian T1 - Controlling Metal Fires through Cellulose Flake Blanketing Followed by Water Spray Cooling JF - Fire N2 - The traditional methods of fighting metal fires are not always safe for firefighters. The sand and salts that are thrown onto the fire to suffocate the flames can lead to splashes of molten metal, putting the firefighters and the surroundings at risk. A novel process is described where magnesium fires are brought under control using a simple two-step process. First, coated cellulose flakes, which contain approx. 30% inorganic salts, are blown onto the fire from a distance of several meters. Due to its low bulk density, the material settles smoothly on the fire and immediately covers the flames for several seconds. Before the hot metal can break through this cover, a fine water spray is applied to the fire. The water spray wets the top layer of the cellulose flakes, which will begin to char from the bottom. The water evaporates from within the cellulose flake layer and withdraws heat. It was observed that no hydrogen is formed and that this technique can safely control fires. It is judged that 90 kg of flakes could safely bring a pile of 75 kg of burning Mg flakes under control. By using a pneumatic conveying unit for the flakes, firefighters can effectively and efficiently cover the flames from a safe distance. This novel method could be recommended to firefighters in industrial magnesium processing plants, as well as local firefighters in the vicinity of such plants. KW - magnesium fire KW - metal fire KW - suffocation Y1 - U6 - http://dx.doi.org/10.3390/fire5030083 VL - 5 IS - 3 ER - TY - CHAP A1 - Wöber, Wilfried A1 - Kefer, Martin A1 - Kubinger, Wilfried A1 - Szuegyi, Daniel T1 - Evaluation of Daylight and Thermal Infra-Red based Detection for Platooning Vehicles T2 - Annals of DAAM for 2012 and Proceedings of the 23rd International DAAM Symposium KW - Vehicle KW - Thermal Detection Y1 - 2019 SP - 719 EP - 722 ER - TY - CHAP A1 - Wöber, Wilfried A1 - Peschak, Bernhard A1 - Otrebski, Richard T1 - ASK: Entwicklung eines modularen Systems zur Automatisierung landwirtschaftlicher Maschinen T2 - Intelligente Systeme - Stand der Technik und neue Möglichkeiten. Lecture Notes in Informatics KW - Automation KW - Agriculture Y1 - 2018 SP - 221 EP - 224 CY - Bonn ER - TY - CHAP A1 - Tabakovic, Momir A1 - Csapo, Csilla T1 - Industry – University cooperation in the renewable energy field in south Africa- Gap analysis and enhancement proposals T2 - UNITO conference, Webinar, Universities of Tomorrow: Global, Interdisciplinary, Digitized, Sustainable, HTWG Konstanz KW - Renewable Energies Y1 - ER - TY - CHAP A1 - Steigl, D A1 - Aburaia, Mohamed A1 - Wöber, Wilfried T1 - Autonomous Grasping of Known Objects Using Depth Data and the PCA T2 - Austrian Robotics Workshop 2020 KW - Robotic KW - Autonomous KW - Grasping Y1 - 2020 ER - TY - JOUR A1 - Diler, Abdulkerim A1 - Yanar, Mete A1 - Özdemir, Veysel Fatih A1 - Aydin, Recep A1 - Kaynar, Özgür A1 - Palangi, Valiollah A1 - Lackner, Maximilian A1 - Koçyigit, Rıdvan T1 - Effects of Slaughter Age of Holstein Friesian Bulls on Meat Quality: Chemical Composition, Textural Characteristics, Sensory Attributes and Fatty Acid Profile JF - Foods N2 - This study aimed to investigate the effects of slaughter age (young vs. old), muscle type (Longissimus dorsi (LD), Gluteus medius (GM)) and fat deposits (kidney knob and channel fat, subcutaneous fat, intramuscular fat) on chemical, organoleptic, textural characteristics and fatty acid composition of Holstein Friesian bull meat. For this purpose, the carcasses of 26 Holstein Friesian bulls that had been fattened on the same private farm were assigned to two experimental groups based on their age at slaughter: a young group (YG) (average age: 17.0 ± 1.0 months old) and an old group (OG) (average age: 22.0 ± 1.0 months old). The percentage of crude protein, panel tenderness score, polyunsaturated fatty acid (PUFA) and saturated fatty acid (SFA) content, the PUFA/SFA ratio and the hypocholesterolemic fatty acid (DFA)/hypercholesterolemic fatty acid (OFA) ratio of the bull carcasses decreased significantly with increasing slaughter age. By contrast, the OFA content of the carcasses significantly increased (p < 0.05) with increasing slaughter age. Advanced slaughter age resulted in lower panel tenderness scores. Additionally, the meat of the bulls in the OG was considered to be less healthy because of the less desirable fatty acid composition and nutritional indices, such as the PUFA/SFA and hypocholesterolemic/hypercholesterolemic ratios, compared to the meat from the bulls in the YG. Furthermore, the intramuscular fat and internal fat contained high percentages of PUFA and SFA and high PUFA/SFA and hypocholesterolemic/hypercholesterolemic ratios. Interestingly, the percentage of OFA content in the internal and intramuscular fat tissues decreased with increasing slaughter age. In conclusion, this study provided evidence that slaughter age and muscle and fat type are essential sources of variations in the textural characteristics, sensory panel attributes and fatty acid profile of meat from Holstein Friesian bulls. KW - fatty acid profile KW - sensory evaluation KW - slaughter age KW - texture profile analysis Y1 - U6 - http://dx.doi.org/10.3390/foods12010158 VL - 12 IS - 1 ER - TY - JOUR A1 - Bağcık, Caner A1 - Koç, Fisun A1 - Erten, Kadir A1 - Esen, Selim A1 - Palangi, Valiollah A1 - Lackner, Maximilian T1 - Lentilactobacillus buchneri Preactivation Affects the Mitigation of Methane Emission in Corn Silage Treated with or without Urea JF - Fermentation N2 - The aim of this study was to investigate the effect of different forms of Lentilactobacillus buchneri on the in vitro methane production, fermentation characteristics, nutritional quality, and aerobic stability of corn silage treated with or without urea. The following treatments were applied prior to ensiling: (1) no urea treatment and LB; (2) no urea treatment+freeze dried LB; (3) no urea treatment+preactivated LB; (4) with urea treatment+no LB; (5) with urea treatment+freeze dried LB; (6) with urea treatment+preactivated. LB was applied at a rate of 3 × 108 cfu/kg on a fresh basis, while urea was applied at a rate of 1% on the basis of dry matter. Data measured at different time points were analyzed according to a completely randomized design, with a 2 × 3 × 5 factorial arrangement of treatments, while the others were analyzed with a 2 × 3 factorial arrangement. Preactivated LB was more effective than freeze-dried LB in reducing silage pH, ammonia nitrogen, cell-wall components, yeast count, and carbon dioxide production, as well as increasing lactic acid and residual water-soluble carbohydrate and aerobic stability (p < 0.0001). A significant reduction in the methane ratio was observed after 24 h and 48 h incubation with preactivated forms of LB (p < 0.001). The results indicated that preactivated LB combined with urea improved fermentation characteristics, nutritional quality, and aerobic stability and reduced the methane ratio of corn silages. KW - gas production KW - Lentilactobacillus buchneri KW - methane KW - silage KW - urea Y1 - U6 - http://dx.doi.org/10.3390/fermentation8120747 VL - 8 IS - 12 ER -