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  • 2020-2024  (9)
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  • 1
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    Predicted subglacial lakes in Antarctica (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: This data set comprises the geographical coordinates of modelled outlines of 31 new subglacial lakes in Dronning Maud Land, Antarctica, using the general hydraulic potential equation (Shreve 1972), Bedmap2 data sets (Fretwell and others, 2013), and AWI airborne radio-echo sounding data collected between 1994–2013. The modelling was conducted in 2015 using the Bedmap2 bedrock topography and ice thickness data (Fretwell and others, 2013) at 5 km grid cell size. Determined sinks in the hydraulic potential were checked for coverage by AWI airborne radio-echo sounding data. Based on the structure of the subglacial reflexions, sinks were classified as subglacial lakes. The outline of like that identified subglacial lakes are presented here. Not all calculated sinks were covered by AWI airborne radio-echo sounding data.
    Keywords: Antarctica; Helmholtz-Verbund Regionale Klimaänderungen = Helmholtz Climate Initiative (Regional Climate Change); Identification; LATITUDE; LONGITUDE; Modelling; Profile; REKLIM; Shot number range; subglacial lakes; Text file; Text file (File Size)
    Type: Dataset
    Format: text/tab-separated-values, 208 data points
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    DATA PANGAEA
  • 2
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    Determination of Spatial Scale in Martian Landscape Images Acquired by the Curiosity Rover, and Viewing Image Scale and Target Chemistry Using the ASIC Website (2023)
    Details
    Publication Date: 2023-07-27
    Description: 〈title xmlns:mml="http://www.w3.org/1998/Math/MathML"〉Abstract〈/title〉〈p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en"〉In this paper we describe a method to compute spatial scales for images acquired by NASA's Mars Curiosity rover (Mars Science Laboratory, MSL). The method is based on the assumption that the rover stands on an infinite plane that may have any orientation with respect to the local gravity vector. While not new, it is the first time that this method is systematically applied to Martian images acquired by a lander. A continuously run software pipeline processes the images acquired by the rover within a 20 m radius, adds approximate scalebars to the raw images, and generates, whenever possible, rectified (warped) versions of those images. The products of this software pipeline and the chemical compositions of relevant rover science targets from NASA's Planetary Data System archive, are made available to the public via the Approximate Scale for Images and Chemistry website, which has been developed in collaboration with the Planetary Data System Analyst's Notebook for the MSL mission. Hyperlinks connect the two resources.〈/p〉
    Description: Plain Language Summary: We developed a software pipeline that calculates the spatial scale of images acquired by NASA's Mars Curiosity rover. The software pipeline is linked to a new website: the Approximate Scale for Images and Chemistry, in which the scalebar products are paired with information about the shape, size, color, and chemical composition of the imaged site, obtained by the rover suite of instruments. The images mimic the vantage point of human eyes and are therefore well‐suited to inspire field geologists (including those mainly working on Earth) to interpret Martian geologic features.〈/p〉
    Description: Key Points: A systematic method to generate approximate scalebars for obliquely acquired Martian landscape images was developed. A newly created Approximate Scale for Images and Chemistry (ASIC) website links images, color, spatial scale, and chemistry, as returned by NASA's Curiosity rover in Gale crater. The ASIC website is complementary and strongly linked to the Analyst's Notebook, the data resource for Martian/lunar landed missions.
    Description: Deutsche Forschungsgemeinschaft
    Description: Project DEAL
    Description: https://asic.mps.mpg.de/
    Description: https://an.rsl.wustl.edu/msl/
    Description: http://pds-geosciences.wustl.edu/msl/msl-m-chemcam-libs-4_5-rdr-v1/mslccm_1xxx/data/moc/
    Description: http://pds-geosciences.wustl.edu/msl/msl-m-chemcam-libs-4_5-rdr-v1/mslccm_1xxx/extras/rmi_mosaics/
    Description: http://pds-geosciences.wustl.edu/msl/msl-m-chemcam-libs-4_5-rdr-v1/mslccm_1xxx/extras/rmi_contours_in_mcam_images/
    Description: http://pds-geosciences.wustl.edu/msl/msl-m-apxs-4_5-rdr-v1/mslapx_1xxx/extras/
    Keywords: ddc:523 ; Mars ; Curiosity rover ; images ; spatial scale ; science targets ; chemistry
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 3
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    Insolvenzrechtliche Gläubigerautonomie im Gläubigerausschuss (2023)
    Duncker & Humblot
    Details
    Publication Date: 2023-08-07
    Description: »Creditors' Autonomy in German Creditors' Committees« Creditors' Autonomy is regarded as a principle of German insolvency law. This thesis questions the meaning and efficiency of this term and ultimately supports the efforts to achieve a stronger preventive restructuring framework and crisis management beyond Creditors' Autonomy. At the same time, the thesis treats the creditors' committee as a highly specialised and efficient organ of insolvency proceedings. It is examined for its economic significance, its legal structure and its development potential as an instrument of Creditors' Autonomy where preventive measures have failed.
    Description: Published
    Description: Gläubigerautonomie gilt als Prinzip des Insolvenzrechts. Sie wird aber nicht grundlos immer wieder als bloße Floskel bezeichnet. Die Arbeit beschäftigt sich mit der Bedeutung und der Leistungsfähigkeit von Gläubigerautonomie. Es wird gezeigt, dass die dahinter ruhende Kraft tatsächlich deutlich schwächer ist, als man es bei einem »Prinzip« vermuten würde. In einer historischen und rechtsvergleichenden Umschau wird der Bedeutung von Gläubigerautonomie auf den Grund gegangen. Das Ergebnis stützt die Bestrebungen zur privat-, nicht aber gläubigerautonomen, vorinsolvenzlichen Krisenbewältigung. Gleichzeitig behandelt die Arbeit den Gläubigerausschuss als spezialisiertes und effizientes Organ des Insolvenzverfahrens, in dem Gläubigerautonomie ein Höchstmaß an positiver Wirkung auf das Verfahren entwickeln kann. Neben der ökonomischen Bedeutung des Ausschusses liegt der Schwerpunkt der Arbeit hier auf seiner Zusammensetzung, der Haftung seiner Mitglieder und seinem Entwicklungspotenzial.
    Keywords: Gläubigerausschuss ; Gläubigerautonomie ; Insolvenz ; bic Book Industry Communication::L Law::LN Laws of Specific jurisdictions::LNP Financial law::LNPC Bankruptcy & insolvency
    Language: German
    Format: image/jpeg
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    E-BOOK
  • 4
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    Ultra-fast YBa2Cu3O7-x direct detectors for the THz frequency range (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-09
    Description: For the analysis and optimization of the picosecond pulsed terahertz radiation generated by electron storage rings or other pulsed sources, ultra-fast detectors are required which are able to resolve picosecond dynamic processes directly in the time domain. In this book, a new direct terahertz detector technology based on the high-temperature superconductor YBa2Cu3O7-x has been developed which opens new routes in the analysis of picosecond time-domain processes with a wide dynamic range.
    Keywords: T1-995 ; terahertz detector ; picosecond temporal resolution ; high-temperature superconductivity ; synchrotron radiation ; electron storage rings ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
    Format: image/jpeg
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    E-BOOK
  • 5
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    Insolvenzrechtliche Gläubigerautonomie im Gläubigerausschuss (2024)
    Duncker & Humblot
    Details
    Publication Date: 2024-01-18
    Description: »Creditors' Autonomy in German Creditors' Committees« Creditors' Autonomy is regarded as a principle of German insolvency law. This thesis questions the meaning and efficiency of this term and ultimately supports the efforts to achieve a stronger preventive restructuring framework and crisis management beyond Creditors' Autonomy. At the same time, the thesis treats the creditors' committee as a highly specialised and efficient organ of insolvency proceedings. It is examined for its economic significance, its legal structure and its development potential as an instrument of Creditors' Autonomy where preventive measures have failed.
    Description: Published
    Description: Gläubigerautonomie gilt als Prinzip des Insolvenzrechts. Sie wird aber nicht grundlos immer wieder als bloße Floskel bezeichnet. Die Arbeit beschäftigt sich mit der Bedeutung und der Leistungsfähigkeit von Gläubigerautonomie. Es wird gezeigt, dass die dahinter ruhende Kraft tatsächlich deutlich schwächer ist, als man es bei einem »Prinzip« vermuten würde. In einer historischen und rechtsvergleichenden Umschau wird der Bedeutung von Gläubigerautonomie auf den Grund gegangen. Das Ergebnis stützt die Bestrebungen zur privat-, nicht aber gläubigerautonomen, vorinsolvenzlichen Krisenbewältigung. Gleichzeitig behandelt die Arbeit den Gläubigerausschuss als spezialisiertes und effizientes Organ des Insolvenzverfahrens, in dem Gläubigerautonomie ein Höchstmaß an positiver Wirkung auf das Verfahren entwickeln kann. Neben der ökonomischen Bedeutung des Ausschusses liegt der Schwerpunkt der Arbeit hier auf seiner Zusammensetzung, der Haftung seiner Mitglieder und seinem Entwicklungspotenzial.
    Keywords: Gläubigerausschuss ; Gläubigerautonomie ; Insolvenz ; bic Book Industry Communication::L Law::LN Laws of Specific jurisdictions::LNP Financial law::LNPC Bankruptcy & insolvency
    Language: German
    Format: application/octet-stream
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    E-BOOK
  • 6
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    Water/marine Zero Pollution Outlook: A forward-looking, model-based analysis of water pollution in the EU (2022)
    Publications Office of the European Union
    Details
    Publication Date: 2024-01-19
    Description: Forward looking analyses are needed in order to anticipate which policy/management options can deliver the very ambitious objectives of the Zero Pollution (ZP) action plan. Integrated and sophisticated numerical modelling tools are useful to generate future scenarios and ‘what if’ analysis as they allow the virtual manipulation of the anthropogenic pressures on ecological systems. JRC has been developing an integrated modelling framework covering the inland and marine waters of the EU, the Marine Modelling Framework (MMF) that follows the principle of the Digital Twins (DT) and that allow to test the impacts of diverse management strategies on the status of freshwater and marine ecosystems through the EU. In the present report, the JRC-DT for water and marine ecosystems is used to test how different policy options can help achieve some of the ZP objectives. From the six top ambitions of the ZP action plan, two are particularly relevant for the water/marine environments. First, the ZP action plan states that it aims at ‘improving water quality by reducing waste’ and in particular, it mentions the (reduction of) ‘plastic litter at sea (by 50%)’. The second relevant ambition refers to ‘improving soil quality by reducing nutrient losses and chemical pesticides’ use by 50%’, which does not only impact soil quality but also the receiving waters (rivers, lakes and seas).
    Type: Report , NonPeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 7
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    Characterization of the Local Volume Probed by the Side-Chain Ends of Poly(oligo(ethylene glycol) 1-Pyrenemethyl ether methacrylate) Bottle Brushes in Solution Using Pyrene Excimer Fluorescence (2021)
    American Chemical Society
    Details
    Publication Date: 2021-10-12
    Print ISSN: 0024-9297
    Electronic ISSN: 1520-5835
    Topics: Chemistry and Pharmacology , Physics
    Published by American Chemical Society
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    PAPER CURRENT
  • 8
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    Data management in MOSAiC – Challenges of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (2020)
    In:  EPIC3SCAR 2020 Online, 2020-08-03-2020-08-07
    Details
    Publication Date: 2023-06-21
    Description: During the MOSAiC expedition, the German research icebreaker Polarstern spends a full year drifting through the Arctic Ocean. Scientists from 20 countries participate in the largest polar expedition in history exploring the Arctic climate system. The experiment covers a large suite of in-situ and remote sensing observations of physical, ecological and biogeochemical parameters to describe the processes coupling the atmosphere, sea ice, and ocean. In addition to forefront instrumentation and observational techniques, proper data management is essential for large and complex projects and field programs. Key elements are agreements on consistent sampling strategies, the possibility to monitor the data flow, to facilitate near real-time processing, and analysis and sharing of data during and long after the expedition. Furthermore, data publication and documentation are crucial for such a collaborative effort and will build the legacy of the project and finally take climate science to the next level. We adapted our modular research data management framework O2A “Data flow from Observations to Archives” to meet the expedition requirements and ensure central data archival for generations to come. Researchers register all necessary sensor metadata beforehand. Essential metadata of scientific actions in the field are ingested immediately with the FloeNavi, a novel system enabling navigation on a drifting ice floe. O2A provides tools to automatize data ingestion, monitor the data flow and process, analyze and publish data. Integration of ship- and land-based components and a shared storage ensure seamless continuation of collaboration during and after the expedition laying the fundamentals for numerous data publications.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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    PAPER (OA)
  • 9
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    MOSAiC goes O2A - Arctic Expedition Data Flow from Observations to Archives (2020)
    In:  EPIC3EGU General Assembly 2020, Online, 2020-05-04-2020-05-08MOSAiC goes O2A - Arctic Expedition Data Flow from Observations to Archives
    Details
    Publication Date: 2023-06-21
    Description: During the largest polar expedition in history starting in September 2019, the German research icebreaker Polarstern spends a whole year drifting with the ice through the Arctic Ocean. The MOSAiC expedition takes the closest look ever at the Arctic even throughout the polar winter to gain fundamental insights and most unique on-site data for a better understanding of global climate change. Hundreds of researchers from 20 countries are involved. Scientists will use the in situ gathered data instantaneously in near-real time modus as well as long afterwards all around the globe taking climate research to a completely new level. Hence, proper data management, sampling strategies beforehand, and monitoring actual data flow as well as processing, analysis and sharing of data during and long after the MOSAiC expedition are the most essential tools for scientific gain and progress. To prepare for that challenge we adapted and integrated the research data management framework O2A “Data flow from Observations to Archives” to the needs of the MOSAiC expedition on board Polarstern as well as on land for data storage and access at the Alfred Wegener Institute Computing and Data Center in Bremerhaven, Germany. Our O2A-framework assembles a modular research infrastructure comprising a collection of tools and services. These components allow researchers to register all necessary sensor metadata beforehand linked to automatized data ingestion and to ensure and monitor data flow as well as to process, analyze, and publish data to turn the most valuable and uniquely gained arctic data into scientific outcomes. The framework further allows for the integration of data obtained with discrete sampling devices into the data flow. These requirements have led us to adapt the generic and cost-effective framework O2A to enable, control, and access the flow of sensor observations to archives in a cloud-like infrastructure on board Polarstern and later on to land based repositories for international availability. Major roadblocks of the MOSAiC-O2A data flow framework are (i) the increasing number and complexity of research platforms, devices, and sensors, (ii) the heterogeneous interdisciplinary driven requirements towards, e. g., satellite data, sensor monitoring, in situ sample collection, quality assessment and control, processing, analysis and visualization, and (iii) the demand for near real time analyses on board as well as on land with limited satellite bandwidth. The key modules of O2A's digital research infrastructure established by AWI are implementing the FAIR principles: SENSORWeb, to register sensor applications and sampling devices and capture controlled meta data before and alongside any measurements in the field Data ingest, allowing researchers to feed data into storage systems and processing pipelines in a prepared and documented way, at best in controlled near real-time data streams Dashboards allowing researchers to find and access data and share and collaborate among partners Workspace enabling researchers to access and use data with research software utilizing a cloud-based virtualized infrastructure that allows researchers to analyze massive amounts of data on the spot Archiving and publishing data via repositories and Digital Object Identifiers (DOI)
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
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    PAPER (OA)
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