9 research outputs found
Massenspektrometer fuer die Raumsonde GIOTTO Endbericht zur Phase C/D
TIB Hannover: FR 2676+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman
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Terminological aspects of data elements
The creation and display of data comprise a process that involves a sequence of steps requiring both semantic and systems analysis. An essential early step in this process is the choice, definition, and naming of data element concepts and is followed by the specification of other needed data element concept attributes. The attributes and the values of data element concept remain associated with them from their birth as a concept to a generic data element that serves as a template for final application. Terminology is, therefore, centrally important to the entire data creation process. Smooth mapping from natural language to a database is a critical aspect of database, and consequently, it requires terminology standardization from the outset of database work. In this paper the semantic aspects of data elements are analyzed and discussed. Seven kinds of data element concept information are considered and those that require terminological development and standardization are identified. The four terminological components of a data element are the hierarchical type of a concept, functional dependencies, schematas showing conceptual structures, and definition statements. These constitute the conventional role of terminology in database design. 12 refs., 8 figs., 1 tab
Cometary Matter Analyser (COMA/CRAF) Schlussbericht
This prospect was part of an international program under which the chemical composition of cometary dust particles was to be measured 'in situ' during a rendezvous and flyby mission of a Mariner Mark II space probe and a comet (depending on the time of launch). Two necessary tasks, preliminary hardware development and interface definition, have been completed within the projects submitted for approval. As a result a model close to the flight configuration has been created, which was to be made available to the flight hardware contractor and his purposes. The Comet Redezvous and Asteroid Flyby (CRAF) mission was abondoned after joint resolution adopted by NASA and the Federal Ministry for Research and Technology in 1992. Since an instrument like CoMa is an important contribution both to future cometary redezvous missions, such as ROSETTA, as well as for accompanying laboratory activities, this project was terminated in a 'qualified conclusion'. In the process, components suitable for the laboratory developed from the preliminary units were produced and put into operation. (orig./HM)Das Vorhaben war Teil eines internationalen Programms, bei dem die chemische Zusammensetzung kometarer Staubteilchen waehrend eines Mitfluges einer Raumsonde vom Typ Mariner Mark II mit einem Kometen (abhaengig vom Startzeitpunkt) 'in situ' gemessen werden sollte. Diese beiden notwendigen Aufgaben, Vorentwicklung der Hardware und Interfacedefinition sind innerhalb des beantragten Vorhabens erledigt worden. Als Ergebnis ist ein der Flugkonfiguration nahes Modell entstanden, das dem Auftragnehmer fuer die Flug-Hardware fuer seine Zwecke zur Verfuegung gestellt werden sollte. Die Mission CRAF ist im Januar 1992 von NASA und BMFT nach einem gemeinsamen Beschluss aufgegeben worden. Da ein Geraet wie CoMA sowohl fuer zukuenftige Kometen-Rendezvous-Missionen wie ROSETTA, wie auch fuer begleitende Laboraktivitaeten ein wichtiger Beitrag ist, wurde noch ein 'qualifizierter Abschluss' der Arbeiten durchgefuehrt. Dabei wurden dem aus den vorentwickelten Einheiten labortaugliche Komponenten hergestellt und in Betrieb genommen. (orig./HM)Available from TIB Hannover: F94B0615 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman
Prinicpal investigator instrument proposal. Type 1 procedure Commentary Matter Analyser. Pt. 2
Available from TIB Hannover: F94B0543 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman