19 research outputs found

    2011 Meeting Report ESA Topical Team Arts, EAC Cologne 06/29-07/01/2011

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    In June 2011, the ESA Topical Team Arts & Sciences (ETTAS), held a three-day workshop at the European Astronaut Centre in Cologne, Germany. During this workshop, topics and ideas were discussed to develop a cooperation between the arts, sciences and ESA to foster and expand the human and cultural aspects of space exploration, and at the same time offer a means of communication which would aim to reach audiences beyond the scope of traditional space-related channels. The preliminary findings and consensus of the team was that establishing and sustaining a transdisciplinary professional community consisting of ESA representatives, scientists and artists would fuel knowledge transfer, and mutual inspiration. Potential ways to provide a sustainable cooperation within and between the various groups were discussed and will be presented. A number of measures and mechanisms in order to initiate and conduct such an initiative and a more in-depth view regarding organizational measures, procedures and consequences, as well as a proposition on how to proceed are included in this report. Overall, the involvement and cooperation between the Arts, Space Science Research and ESA will enhance in the citizens of the ESA member states the sense of public ownership of ESA results, and participation in ESA's research. Another aspect the team would like to discuss in the future is artist's role in discovery or research

    NEMO-HD: High-Resolution Microsatellite for Earth Monitoring and Observation

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    The Space Flight Laboratory (SFL) at the University of Toronto Institute for Aerospace Studies, in collaboration with the Slovenian Centre of Excellence for Space Sciences and Technologies (SPACE-SI), is developing a 40 kg microsatellite for earth monitoring and observation that is capable of resolving a Ground Sampling Distance (GSD) of 2.8 m from a design altitude of 600 km. NEMO-HD (Nanosatellite for Earth Monitoring and Observation - High Definition) is the second spacecraft that is based on SFL\u27s high-performance NEMO bus and builds upon the heritage of SFL\u27s flight-proven Generic Nanosatellite Bus (GNB). NEMO-HD will carry two optical instruments: a narrow-field instrument as well as a wide-field instrument. The narrow-field instrument will be capable of resolving 2.8 m GSD in four channels corresponding to Landsat-1, 2, 3, and 4 spectral channels (450-520 nm, 520-600 nm, 630-690 nm, and 760-900 nm). The wide-field instrument will be capable of resolving 75 m GSD or better. Both instruments are capable of recording High-Definition video at 1920 by 1080 pixels. The spacecraft will be capable of performing global imaging and real-time video streaming over Slovenia and other regions where it will be in view of the ground station. In addition, the spacecraft will also be capable of performing remote observations. NEMOHD will include the standard complement of subsystems, sensors and actuators that make up a three-axis stabilized NEMO bus. NEMO-HD will be enhanced to include a 50 Mbps X-band downlink, 128 GB of on-board storage, a high-performance instrument computer, and a power system generating 31 W at end-of-life with a 130 W-h Li-ion battery. The paper provides an overview of the NEMO-HD system design

    Static secondary ion mass spectrometry investigation of corrosion inhibitor Irgamet®39 on copper surfaces treated in power transformer insulating oil

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    Static secondary ion mass spectrometry was used to study the corrosion inhibitor Irgamet®39 on the surface of copper treated in insulating oils and the effect of temperature changes, by means of temperature programmed desorption experiments under vacuum, on metal coverage. Four commercial oils, both corrosive and non-corrosive, showed no significant influence on the stability of the tolyltriazole layer and the energy of its main desorption event from copper was calculated around 100 kJ mol?1. Finally, an example of ion imaging as diagnostic tool to track the distribution of corrosion inhibitor and by-products in decommissioned or failed power transformers is described

    A balanced scorecard-based model for evaluating e-learning and conventional pedagogical activities in nursing

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    The evaluation of e-learning and conventional pedagogical activities in nursing programmes has focused either on a single pedagogical activity or the entire curriculum, and only on students or teachers\u27 perspective. The goal of this study was to design and test a novel approach for evaluation of e-learning and conventional pedagogical activities that considers students\u27, teachers\u27 and managers\u27 perspectives. A case study of the proposed approach was performed at a publicly funded nursing faculty with Slovenian and Italian students from 2009 to 2012. The case study was combined with focus group discussions, interviews, direct observation and survey. The proposed approach allows management to compare the value of different pedagogical activities through the students\u27, teachers\u27 and managers\u27 perspectives. The approach proved useful in the evaluation of pedagogical activities and provided valid arguments for long-term pedagogical process improvemen

    Ab Initio Transport Calculations for Single-Atom Copper Junctions in the Presence of Hydrogen Chloride

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    We study the transport properties of single-atom-thick Cu wires submerged in an electrochemical solvent containing HCl. As a first step, we investigate the stability of hydrogen coadsorbing with chlorine on the Cu(111) surface in an implicit electrochemical environment. We find that adding hydrogen to a Cl-covered Cu surface is energetically unfavorable. The result serves as an estimate for the number of Cl atoms that adsorb near the single-atom wire. We use it to construct model junctions (Cu wire plus adsorbates), the electron transport properties of which we investigate with density functional theory. We find that the Cl and H adsorbates tend to deplete the density of states of the Cu wire near the Fermi energy. As a consequence, the transmission is reduced. Interestingly, we observe that in the case of H-adsorption, the amount of depletion is quite sensitive to the wire geometry (relaxed vs unrelaxed), but this is not the case with Cl
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