Fortschritte in der Metallographie

Mitsche, Roland; Jeglitsch, Franz; Petzow, Günter

Bibliographic data

Monograph

Persistent identifier:: 1698011091

Title:: Fortschritte in der Metallographie

Sub title:: Berichte der III. Internationalen Metallographie-Tagung, Leoben, 14. bis 16. Oktober 1970

Scope:: 557 Seiten

Year of publication:: 1972

Place of publication:: Stuttgart

Publisher of the original:: Dr. Riederer-Verlag GmbH

Identifier (digital):: 1698011091

Illustration:: Illustrationen, Diagramme

Signature of the source:: RN 1500(3)

Language:: German

Additional Notes:: Literaturangaben

Usage licence:: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

Editor:: Mitsche, Roland; Jeglitsch, Franz; Petzow, Günter

Contributor:: Internationale Metallographie-Tagung, 3; 1970; Leoben

Organiser:: Institut für Metallkunde und Werkstoffprüfung, Leoben; Eisenhütte Österreich; Deutsche Gesellschaft für Materialkunde, Ausschuss für Metallographie

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2020

Document type:: Monograph

Collection:: Materials sciences

Chapter

Title:: STEREOMETRISCHE METALLOGRAPHIE

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: Eine mathematisch-statistische Methode zur Entwicklung metallographischer Richtreihen. MANFRED WOLF, JOSEF SKOF

Document type:: Monograph

Structure type:: Chapter

Key Words: Remote Sensing, Resource Management, Environmental Management, Earth Information Lifecycle, Satellite Sensors, Airborne Sensors, Data Extraction Tools. Application Readiness of Remote Sensing Technologies Historically, we have seen relatively limited effective application of remote sensing to the ever more acute resource and environment management problems. Subsequent sections of this paper examine the main factors that have limited the acceptance of remotely sensed data and identify the improvements anticipated over the next few years. The key factors causing these limitations include: • Availability, resolution and quality of source data; • Availability of affordable digital data products; • Availability of cost-efficient tools to populate and update data bases with geographic information extracted from imagery; • Availability of data base structures to efficiently manage locationally related raster, vector and attribute data; and • Availability of affordable computer technology to store, access, process and share the vast amounts of data. While individually each of these factors has contributed in rendering certain applications of remote sensing economically or technically less feasible, the compounded effect has constrained the utility of remotely sensed data as a whole (see Figure 2). However, significant advances are taking place in all of the above areas, to the extent that substantially increased applications of remote sensing to large scale resource and environmental management issues are to be expected. POTENTIAL REMOTE SENSING APPLICATIONS DATA SOURCE 1 I , I DATA I DISTRIBUTION TOOLS EFFECT IF ALL FACTORS ARE REDUCED BY 507. L 1 DATA BASE COMPUTATION AFFORDABILITY AC IUAL APPLICATIONS Data Sources - Satellite Sensors For many years now weather satellites such as TIROS-N, GOES, Meteosat and GMS, have proven to be a stable source of meteorological data for operational applications. Looking at earth resource satellites, however, as recently as 1989 the number of accessible remote sensing satellites actively imaging the earth's surface was still rather limited (e.g., Landsat-5, SPOT-1, MOS-1). Of these satellites, Landsat was under threat of cancellation, SPOT-1 was the only satellite offering substantially better than 30 m resolution, and none of these sensors can penetrate cloud cover. In addition, when one combines coverage frequency of these satellites with the cloud cover characteristics, the average elapsed time between two useful images of the same region can be considerable. This combination of factors does not generally encourage policy makers to embark on resource management programs which rely heavily on satellite remote sensing. However, this situation is changing rapidly. First, the Landsat program is surviving and Landsat-6 is scheduled for launch in mid- 1991. Second, SPOT-2 was launched in January 1990 and plans for SPOT-3 and SPOT-4 are well underway. And third, a wave of radar satellites (Europe: ERS-1 and -2, Japan: JERS-1, Canada: Radarsat, USSR: Radarsatellite) are expected to be launched over the next four years. Because of the increasing number of satellites, the cloud penetration characteristics of radar, and the spread in political nature of the countries controlling the satellites, the combined effect dramatically increases the effective coverage frequency and data accessibility for all regions of the earth, and improves back up possibilities if a satellite fails. In addition, the parts of the spectrum sensed by these new instruments collectively will accommodate a broader variety of applications. Programs now on the drawing board, such as the U.S. Earth Observations System, the European Polar Orbiting Platform, and the Canadian Earth Environment Satellite Initiative (EESI) indicate this trend towards more data sources is likely to continue. Data Sources - Airborne Sensors While the spatial resolution of resource satellites imagery (generally 10-30 m) is sufficient for applications at the global and national level, and certain applications at the regional level, it becomes less suitable as the cultural density increases towards the local level. 99-5651-D2R1\CD Figure 2 Factor Impact on Remote Sensing Data Utility 236

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