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apps Other research product2022 Switzerland EnglishPublisher:ETH Zurich Authors: Caflisch, Nicolin;Caflisch, Nicolin;handle: 20.500.11850/609680
Nitrogen (N) fertilization is of paramount importance for crop productivity and thus for nurturing an ever-growing world population. However, untargeted N fertilization can result in damage to natural ecosystems and threats to human health. Notably, the contamination of groundwater used as drinking water with excessive amounts of nitrate (NO₃⁻) constitutes a serious problem in the Swiss Central Plains and worldwide. The Nmin method constitutes a promising approach to tackle such negative side-effects of N fertilization without compromising crop productivity through a more targeted, site- and year-specific N fertilization based on the measurement of plant-available N (Nmin) in the soil before N fertilizer application. The overall scope of this thesis was to identify aspects of the Nmin method as it is currently used in Switzerland that may be improved during the current routine revision of the official Swiss fertilization recommendations, the GRUD, with a particular focus on the opportunities offered by digitalization. For this purpose, the Swiss Nmin method was compared to Nmin-based and other N fertilization recommendations from Switzerland, Germany, Denmark and the United Kingdom, including the associated soil sampling and analysis methods. This notably included the calculation of the “optimum” N fertilization rate for field experiments with winter wheat conducted by the Swiss Confederation’s center of excellence for agricultural research Agroscope and its partner institutions. Furthermore, the relationship between soil organic matter and clay content and N availability in winter wheat and winter barley was studied using linear mixed models. The feasibility of predicting Nmin in early spring based on 23 vegetation indices calculated from multispectral UAV (unmanned aerial vehicle) imagery was assessed for winter wheat using bootstrappingbased correlation analysis and Passing-Bablok regression. On average, the Swiss N fertilization recommendation yielded appreciably lower “optimum” N fertilization rates than their German and British counterparts, but an undifferentiated increase of N fertilization rates in Switzerland would likely exacerbate the existing NO₃⁻ leaching problems. However, a site- and year-specific flexibility of maximum allowable N fertilization rates based on the Nmin method or similar approaches may enable an increase in crop productivity while reducing the negative side-effects of N fertilization. Furthermore, the lack of a reasonable correction for differences in yield among fields as well as certain aspects of the associated Nmin measurement procedures were identified as the most important points that should be improved in the Swiss Nmin method. The NDVI and the functionally equivalent NIR / R ratio were identified as the vegetation indices with the highest correlation with Nmin in the 0 - 30 cm soil horizon in early spring (ρ = 0.6675, p < 0.001). Yet, the subsequent Passing-Bablok regression clearly showed that a prediction of Nmin at the field scale based on a vegetation index alone is not sufficiently reliable to be meaningfully integrated in a fertilization recommendation. However, vegetation indices remain useful for the site- and year-specific optimization of N fertilization. In the short term, digitalization eliminates the high need for simplification inherent in non-digitalized fertilization recommendations, allowing us to make the most advanced scientific models of the N cycle usable for farmers. This way, digitalization can contribute to the site- and year-specific optimization of N fertilization even without developing something fundamentally new.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Lecture 2022Embargo end date: 01 Jan 2022 Switzerland EnglishPublisher:ETH Zurich Funded by:EC | AERO-TRAINEC| AERO-TRAINAuthors: Pantic, Michael; id_orcid0000-0002-2410-5152; Girod, Rik; id_orcid0000-0002-2548-7746; Lanegger, Christian; Biasio, Mariano; +7 AuthorsPantic, Michael; id_orcid0000-0002-2410-5152; Girod, Rik; id_orcid0000-0002-2548-7746; Lanegger, Christian; Biasio, Mariano; Cuniato, Eugenio; Allenspach, Mike; id_orcid0000-0001-6903-6341; Reijgwart, Victor; id_orcid0000-0002-7605-8490; Barahona, Jero; Bernreiter, Lukas; id_orcid0000-0002-3162-0363; Cadena, Cesar; id_orcid0000-0002-2972-6011; Pfreundschuh, Patrick;handle: 20.500.11850/597022
We present our research in aerial robotics and 3D mapping at the Swiss Robotics Day 2022 in Lausanne, Switzerland. This includes a booth open to researchers and the general public and demos where we show contact-based inspection.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Lecture 2022Embargo end date: 07 Dec 2022 Switzerland EnglishPublisher:ETH Zurich Funded by:EC | AERO-TRAINEC| AERO-TRAINAuthors: Girod, Rik; id_orcid0000-0002-2548-7746;Girod, Rik; id_orcid0000-0002-2548-7746;handle: 20.500.11850/597021
Low latency and robust state estimation is one of the key components to stable rotary-wing control. In this lecture style presentation, we summarize the different level of state estimation from rate control to position control and practical considerations when designing the system architecture and selecting sensors. Furthermore, we give recommendations on practical sensor fusion, where probabilistic sensor fusion frameworks have to be approximated given real-world sensor noise.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Lecture 2020Embargo end date: 02 Oct 2020 Switzerland EnglishPublisher:ETH Zurich Authors: Gramazio Kohler Research; Flatt, Robert; NCCR Digital Fabrication; Lloret-Fritschi, Ena;Gramazio Kohler Research; Flatt, Robert; NCCR Digital Fabrication; Lloret-Fritschi, Ena;handle: 20.500.11850/388171
Smart Dynamic Casting (SDC) is a continuous robotic slip-forming process that enables the prefabrication of material-optimised load-bearing concrete structures. In this automated process, a dynamic formwork, significantly smaller than the structure produced, is continuously moved at a velocity which allows concrete to be shaped during the critical phase that it changes from a soft to a hard material. As part of the dfab House at the EMPA premises in Dübendorf, CH, SDC was selected as one of five innovative construction techniques to demonstrate the construction of the future in digital fabrication. In this case SDC was used for the automated prefabrication of 15 bespoke material-optimized load-bearing façade mullions and additionally represents the first digital fabrication process world-wide which has unified reinforcement and concreting in a single robotic fabrication process. This extended abstract contextualizes SDC in the state of the art of digital concrete construction and highlights the challenges encountered when producing 15 individual mullions for the dfab House.
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For further information contact us at helpdesk@openaire.euapps Other research product2017 Switzerland EnglishPublisher:ETH-Zürich Authors: Grahm, Lina;Grahm, Lina;handle: 20.500.11850/156314
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2016 Switzerland EnglishPublisher:Caucasus Research Resource Centers; Research Centre for East European Studies at the University of Bremen; Center for Security Studies (CSS) at ETH Zurich; German Association for East European Studies (DGO) Authors: Echanove, Juan; Dubois, Virginie-Anne; Dadiani, Levan;Echanove, Juan; Dubois, Virginie-Anne; Dadiani, Levan;handle: 20.500.11850/127280
ISSN:1867-9323
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For further information contact us at helpdesk@openaire.euapps Other research product2016 Switzerland EnglishPublisher:ETH Zürich Authors: Kessens, Samuel;Kessens, Samuel;handle: 20.500.11850/155901
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For further information contact us at helpdesk@openaire.euapps Other research product2016 Switzerland EnglishPublisher:ETH Zürich Authors: Rimle, Andrina;Rimle, Andrina;handle: 20.500.11850/118644
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For further information contact us at helpdesk@openaire.euapps Other research product2016 Switzerland EnglishPublisher:ETH Zürich Authors: Opiasa, Michael;Opiasa, Michael;handle: 20.500.11850/127831
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For further information contact us at helpdesk@openaire.euapps Other research product2015 Switzerland EnglishPublisher:ETH-Zürich Authors: Vollenweider, Claudia;Vollenweider, Claudia;handle: 20.500.11850/108533
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apps Other research product2022 Switzerland EnglishPublisher:ETH Zurich Authors: Caflisch, Nicolin;Caflisch, Nicolin;handle: 20.500.11850/609680
Nitrogen (N) fertilization is of paramount importance for crop productivity and thus for nurturing an ever-growing world population. However, untargeted N fertilization can result in damage to natural ecosystems and threats to human health. Notably, the contamination of groundwater used as drinking water with excessive amounts of nitrate (NO₃⁻) constitutes a serious problem in the Swiss Central Plains and worldwide. The Nmin method constitutes a promising approach to tackle such negative side-effects of N fertilization without compromising crop productivity through a more targeted, site- and year-specific N fertilization based on the measurement of plant-available N (Nmin) in the soil before N fertilizer application. The overall scope of this thesis was to identify aspects of the Nmin method as it is currently used in Switzerland that may be improved during the current routine revision of the official Swiss fertilization recommendations, the GRUD, with a particular focus on the opportunities offered by digitalization. For this purpose, the Swiss Nmin method was compared to Nmin-based and other N fertilization recommendations from Switzerland, Germany, Denmark and the United Kingdom, including the associated soil sampling and analysis methods. This notably included the calculation of the “optimum” N fertilization rate for field experiments with winter wheat conducted by the Swiss Confederation’s center of excellence for agricultural research Agroscope and its partner institutions. Furthermore, the relationship between soil organic matter and clay content and N availability in winter wheat and winter barley was studied using linear mixed models. The feasibility of predicting Nmin in early spring based on 23 vegetation indices calculated from multispectral UAV (unmanned aerial vehicle) imagery was assessed for winter wheat using bootstrappingbased correlation analysis and Passing-Bablok regression. On average, the Swiss N fertilization recommendation yielded appreciably lower “optimum” N fertilization rates than their German and British counterparts, but an undifferentiated increase of N fertilization rates in Switzerland would likely exacerbate the existing NO₃⁻ leaching problems. However, a site- and year-specific flexibility of maximum allowable N fertilization rates based on the Nmin method or similar approaches may enable an increase in crop productivity while reducing the negative side-effects of N fertilization. Furthermore, the lack of a reasonable correction for differences in yield among fields as well as certain aspects of the associated Nmin measurement procedures were identified as the most important points that should be improved in the Swiss Nmin method. The NDVI and the functionally equivalent NIR / R ratio were identified as the vegetation indices with the highest correlation with Nmin in the 0 - 30 cm soil horizon in early spring (ρ = 0.6675, p < 0.001). Yet, the subsequent Passing-Bablok regression clearly showed that a prediction of Nmin at the field scale based on a vegetation index alone is not sufficiently reliable to be meaningfully integrated in a fertilization recommendation. However, vegetation indices remain useful for the site- and year-specific optimization of N fertilization. In the short term, digitalization eliminates the high need for simplification inherent in non-digitalized fertilization recommendations, allowing us to make the most advanced scientific models of the N cycle usable for farmers. This way, digitalization can contribute to the site- and year-specific optimization of N fertilization even without developing something fundamentally new.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Lecture 2022Embargo end date: 01 Jan 2022 Switzerland EnglishPublisher:ETH Zurich Funded by:EC | AERO-TRAINEC| AERO-TRAINAuthors: Pantic, Michael; id_orcid0000-0002-2410-5152; Girod, Rik; id_orcid0000-0002-2548-7746; Lanegger, Christian; Biasio, Mariano; +7 AuthorsPantic, Michael; id_orcid0000-0002-2410-5152; Girod, Rik; id_orcid0000-0002-2548-7746; Lanegger, Christian; Biasio, Mariano; Cuniato, Eugenio; Allenspach, Mike; id_orcid0000-0001-6903-6341; Reijgwart, Victor; id_orcid0000-0002-7605-8490; Barahona, Jero; Bernreiter, Lukas; id_orcid0000-0002-3162-0363; Cadena, Cesar; id_orcid0000-0002-2972-6011; Pfreundschuh, Patrick;handle: 20.500.11850/597022
We present our research in aerial robotics and 3D mapping at the Swiss Robotics Day 2022 in Lausanne, Switzerland. This includes a booth open to researchers and the general public and demos where we show contact-based inspection.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Lecture 2022Embargo end date: 07 Dec 2022 Switzerland EnglishPublisher:ETH Zurich Funded by:EC | AERO-TRAINEC| AERO-TRAINAuthors: Girod, Rik; id_orcid0000-0002-2548-7746;Girod, Rik; id_orcid0000-0002-2548-7746;handle: 20.500.11850/597021
Low latency and robust state estimation is one of the key components to stable rotary-wing control. In this lecture style presentation, we summarize the different level of state estimation from rate control to position control and practical considerations when designing the system architecture and selecting sensors. Furthermore, we give recommendations on practical sensor fusion, where probabilistic sensor fusion frameworks have to be approximated given real-world sensor noise.
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You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3929/ethz-b-000597021&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Research Collection arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3929/ethz-b-000597021&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Lecture 2020Embargo end date: 02 Oct 2020 Switzerland EnglishPublisher:ETH Zurich Authors: Gramazio Kohler Research; Flatt, Robert; NCCR Digital Fabrication; Lloret-Fritschi, Ena;Gramazio Kohler Research; Flatt, Robert; NCCR Digital Fabrication; Lloret-Fritschi, Ena;handle: 20.500.11850/388171
Smart Dynamic Casting (SDC) is a continuous robotic slip-forming process that enables the prefabrication of material-optimised load-bearing concrete structures. In this automated process, a dynamic formwork, significantly smaller than the structure produced, is continuously moved at a velocity which allows concrete to be shaped during the critical phase that it changes from a soft to a hard material. As part of the dfab House at the EMPA premises in Dübendorf, CH, SDC was selected as one of five innovative construction techniques to demonstrate the construction of the future in digital fabrication. In this case SDC was used for the automated prefabrication of 15 bespoke material-optimized load-bearing façade mullions and additionally represents the first digital fabrication process world-wide which has unified reinforcement and concreting in a single robotic fabrication process. This extended abstract contextualizes SDC in the state of the art of digital concrete construction and highlights the challenges encountered when producing 15 individual mullions for the dfab House.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Research Collection arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euapps Other research product2017 Switzerland EnglishPublisher:ETH-Zürich Authors: Grahm, Lina;Grahm, Lina;handle: 20.500.11850/156314
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2016 Switzerland EnglishPublisher:Caucasus Research Resource Centers; Research Centre for East European Studies at the University of Bremen; Center for Security Studies (CSS) at ETH Zurich; German Association for East European Studies (DGO) Authors: Echanove, Juan; Dubois, Virginie-Anne; Dadiani, Levan;Echanove, Juan; Dubois, Virginie-Anne; Dadiani, Levan;handle: 20.500.11850/127280
ISSN:1867-9323
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______150::c12e7b6a996b371c4e606bc827ce626c&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Research Collection arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euapps Other research product2016 Switzerland EnglishPublisher:ETH Zürich Authors: Kessens, Samuel;Kessens, Samuel;handle: 20.500.11850/155901
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______150::2937e1e6bd2d4ddf1364318a5b278c57&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2016 Switzerland EnglishPublisher:ETH Zürich Authors: Rimle, Andrina;Rimle, Andrina;handle: 20.500.11850/118644
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euapps Other research product2016 Switzerland EnglishPublisher:ETH Zürich Authors: Opiasa, Michael;Opiasa, Michael;handle: 20.500.11850/127831
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______150::6419d3509f3c48dcbb0a87231f4ce460&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______150::6419d3509f3c48dcbb0a87231f4ce460&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2015 Switzerland EnglishPublisher:ETH-Zürich Authors: Vollenweider, Claudia;Vollenweider, Claudia;handle: 20.500.11850/108533
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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