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  • Organic Chemistry  (891)
  • Computational Chemistry and Molecular Modeling
  • EARTH RESOURCES AND REMOTE SENSING
  • 1990-1994  (1.481)
  • 1980-1984
  • 1955-1959
  • 1935-1939
  • 1990  (1.481)
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  • 1990-1994  (1.481)
  • 1980-1984
  • 1955-1959
  • 1935-1939
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  • 1
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    Views from Space (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-08-28
    Beschreibung: This video shows how views from the shuttle provide valuable information as to the condition of earth.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: ASR-252 , NASA-TM-109634 , NONP-NASA-VT-93-190432
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 2
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    Satellite remote sensing of water resources in the Yangtze and Yellow Rivers of China based on infrared imagery of cloud distributions (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-08-28
    Beschreibung: Although the two largest rivers in China originate in the same region, separated only by the Bayanhar Mountains as a watershed, the Yangtze and Yellow Rivers behave in quite different ways. Most of the warm and humid air currents from the Arabian Sea and Bay of Bengal are blocked by the Bayanhar Mountains. As a result, the amount of water in the Yellow River is only 5 percent of that in the Yangtze River. Based on the cloud coverage area and the cloud volumetric distributions, and also the thickness above 9.4 kms of the cumulus clouds located north and south of the Bayanhar Mountains, from GEO satellite IR imagery, the results suggest that a more detailed investigation is warranted in the hope that the proper modification of cumuli north of the Bayanhar Mountains would enhance the rainfall over the fountainhead of the Yellow River.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Data policy and availability supporting global change research, development, and decision-making: An information perspective (1990)
    In:  CASI
    Details
    Publikationsdatum: 2019-08-14
    Beschreibung: An explosion of information has created a crisis for today's information age. It has to be determined how to use the best available information sources, tools, and technology. To do this it is necessary to have leadership at the interagency level to promote a coherent information policy. It is also important to find ways to educate the users of information regarding the tools available to them. Advances in technology resulted in efforts to shift from Disciplinary and Mission-oriented Systems to Decision Support Systems and Personalized Information Systems. One such effort is being made by the Interagency Working Group on Data Management for Global Change (IAWGDMGC). Five federal agencies - the Department of Commerce (DOC), Department of Energy (DOE), National Aeronautics and Space Administration (NASA), National Library of Medicine (NLM), and Department of Defense (DOD) - have an on-going cooperative information management group, CENDI (Commerce, Energy, NASA, NLM, and Defense Information), that is meeting the challenge of coordinating and integrating their information management systems. Although it is beginning to be technically feasible to have a system with text, bibliographic, and numeric data online for the user to manipulate at the user's own workstation, it will require national recognition that the resource investment in such a system is worthwhile, in order to promote its full development. It also requires close cooperation between the producers and users of the information - that is, the research and policy community, and the information community. National resources need to be mobilized in a coordinated manner to move people into the next generation of information support systems.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-TM-105137 , NAS 1.15:105137
    Format: application/pdf
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  • 4
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    Remote sensing science for the Nineties; Proceedings of IGARSS '90 - 10th Annual International Geoscience and Remote Sensing Symposium, University of Maryland, College Park, May 20-24, 1990. Vols. 1, 2, & 3 (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Various papers on remote sensing (RS) for the nineties are presented. The general topics addressed include: subsurface methods, radar scattering, oceanography, microwave models, atmospheric correction, passive microwave systems, RS in tropical forests, moderate resolution land analysis, SAR geometry and SNR improvement, image analysis, inversion and signal processing for geoscience, surface scattering, rain measurements, sensor calibration, wind measurements, terrestrial ecology, agriculture, geometric registration, subsurface sediment geology, radar modulation mechanisms, radar ocean scattering, SAR calibration, airborne radar systems, water vapor retrieval, forest ecosystem dynamics, land analysis, multisensor data fusion. Also considered are: geologic RS, RS sensor optical measurements, RS of snow, temperature retrieval, vegetation structure, global change, artificial intelligence, SAR processing techniques, geologic RS field experiment, stochastic modeling, topography and Digital Elevation model, SAR ocean waves, spaceborne lidar and optical, sea ice field measurements, millimeter waves, advanced spectroscopy, spatial analysis and data compression, SAR polarimetry techniques. Also discussed are: plant canopy modeling, optical RS techniques, optical and IR oceanography, soil moisture, sea ice back scattering, lightning cloud measurements, spatial textural analysis, SAR systems and techniques, active microwave sensing, lidar and optical, radar scatterometry, RS of estuaries, vegetation modeling, RS systems, EOS/SAR Alaska, applications for developing countries, SAR speckle and texture.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: IGARSS 90: Annual International Geosciences and Remote Sensing Symposium; May 20, 1990 - May 24, 1990; College Park, MD; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Automatic ground control point recognition with parallel associative memory (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The basic principle of the associative memory is to match the unknown input pattern against a stored training set, and responding with the 'closest match' and the corresponding label. Generally, an associative memory system requires two preparatory steps: selecting attributes of the pattern class, and training the system by associating patterns with labels. Experimental results gained from using Parallel Associative Memory are presented. The primary concern is an automatic search for ground control points in aerial photographs. Synthetic patterns are tested followed by real data. The results are encouraging as a relatively high level of correct matches is reached.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: 1990 ACSM-ASPRS Fall Convention; Nov 05, 1990 - Nov 10, 1990; Anaheim, CA; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    Chronological evaluation of urban growth and area expansion in Aguascalientes, Mexico using remotely sensed and ancillary mapped data (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The study describes some efforts to assist the mapping procedure of Mexican towns and cities by focusing on the analysis of urban changes that have occurred in the city of Aguascalientes. To evaluate urban growth trends in Aguascalientes, historic maps of land cover, aerial photography, and SPOT data were reviewed between the period of 1857 and 1988 to determine urban boundaries. Additional analyses focused on identifying the extent and pattern of growth in reference to urban development plans initiated in 1978, and on assessing the impact of relocating people and industry after the Mexico City earthquake. Results from the study indicate a steady growth in areal expansion and population in the Aguascalientes area between 1978 and 1988.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: 1990 ACSM-ASPRS Fall Convention; Nov 05, 1990 - Nov 10, 1990; Anaheim, CA; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Water balance model for Kings Creek (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Particular attention is given to the spatial variability that affects the representation of water balance at the catchment scale in the context of macroscale water-balance modeling. Remotely sensed data are employed for parameterization, and the resulting model is developed so that subgrid spatial variability is preserved and therefore influences the grid-scale fluxes of the model. The model permits the quantitative evaluation of the surface-atmospheric interactions related to the large-scale hydrologic water balance.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Symposium on FIFE - First ISLSCP Field Experiment; Feb 07, 1990 - Feb 09, 1990; Anaheim, CA; United States
    Format: text
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  • 8
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    A comparison of surface biophysical properties and remotely sensed variables from FIFE (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: A method for calculating surface energy balances is investigated which incorporates the vegetation index and/or other indicators of surface conductance at visible and near-IR channels. Data from the Konza Prairie are employed to confirm the hypothesized relationship between maximum canopy conductance and the observed simple-ratio vegetation index. The relationship is established, but more data regarding soil-surface contributions are required to estimate the total surface conductance to evapotranspiration.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Symposium on FIFE - First ISLSCP Field Experiment; Feb 07, 1990 - Feb 09, 1990; Anaheim, CA; United States
    Format: text
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  • 9
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    Variability of photosynthetically available and total solar irradiance at the surface during FIFE - A satellite description (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The satellite method of Gautier et al. (1980) is applied to GOES-6 radiometer data to determine the availability of quantitative data on the temporal variability of photosynthetically available radiation (PAR) and insolation. Comparisons with in situ measurements indicate that the modified satellite method yields insolation and PAR data with small biases and standard errors of 9 and 6.5 percent respectively. It is shown that large-scale satellite climatologies of insolation can be converted into climatologies of PAR to study photosynthetic activity on a global scale.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Symposium on FIFE - First ISLSCP Field Experiment; Feb 07, 1990 - Feb 09, 1990; Anaheim, CA; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    The L-band radiometric measurements of FIFE test site in 1987-1988 (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Emissivity dependence in the L-band on senescent vegetation is examined with the Push-Broom Microwave Radiometer (PBMR) aboard a NASA C-130 with special attention given to areas near two watersheds. Volumetric soil moisture is examined, and comparisons are given of burned and unburned areas. The factors are examined that contribute to differences between soil-moisture values and the ratio of L-band PBMR brightness temperature and the soil temperature measured at 2.5 cm. The explanations posited include improper calibration, extreme dryness at the time of measurements, and the difference in vegetation covers.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Symposium on FIFE - First ISLSCP Field Experiment; Feb 07, 1990 - Feb 09, 1990; Anaheim, CA; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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