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  • Books  (13)
  • Other Sources  (157)
  • 2005-2009  (98)
  • 2000-2004  (72)
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Year
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  • 1
    Monograph available for loan
    Monograph available for loan
    Economic valuation of water resources in agriculture : from the sectoral to a functional perspective of natural resource management (2004)
    Rome : Food and Agriculture Organization of the United Nations
    Details Availability
    Call number: PIK N 454-08-0064
    Type of Medium: Monograph available for loan
    Pages: XII, 187 S. , graph. Darst.
    ISBN: 9251051909
    Series Statement: FAO water reports 27
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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    BOOK
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  • 2
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    Effects of 2 G hypergravity exposure on Bobwhite (Colinus virginianus) and Japanese quail (Coturnix coturnix japonica) (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: We compared reproductive fitness and early postnatal growth of Bobwhite (Colinus virginianus) and Japanese (Coturnix coturnix japonica) quail incubated and hatched during 2 G centrifugation. Fertilized Bobwhite and Japanese quail eggs were placed in portable incubators on the 8-ft International Space Station Test Bed (ISSTB) Centrifuge at NASA Ames Research Center. The quail eggs were incubated throughout hatching and reared until Postnatal day (P)4 at either 1.0, 1.2 or 2.0 G. Two days before hatching, candling revealed significantly greater numbers of viable Bobwhite than Japanese quail eggs at all g-loads. Bobwhite quail exhibited significantly better hatching success at all g-loads than did Japanese quail. Bobwhite hatchlings were sensitive to gravitational loading as evidenced by reduced postnatal body mass and length of 2 G hatchlings relative to 1 G control hatchlings. In contrast, mass and length of Japanese quail hatchlings were unaffected by 1.2 or 2 G exposure. Together, our findings provide evidence for superior viability and hatching success in Bobwhite quail relative to Japanese quail, coupled with greater sensitivity of postnatal body growth and development to 2 G loading. Bobwhite quail may be better suited than Japanese quail for scientific studies on space biology platforms.
    Keywords: Aerospace Medicine
    Type: Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology (ISSN 1077-9248); 11; 2; P241-2
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Modeling the heterogeneous hydraulic properties of faults using constraints from reservoir-induced seismicity (2005)
    In:  J. Geophys. Res., Luxembourg, Conseil de l'Europe, vol. 110, no. B9, pp. 374-387, pp. B09201, (ISBN 1-86239-117-3)
    Details
    Publication Date: 2005
    Keywords: Inhomogeneity ; Fluids ; Physical properties of rocks ; Induced seismicity ; JGR ; Nascimento
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    The absence of remotely triggered seismicity in Japan (2006)
    In:  Bulletin of the Seismological Society of America, Münster, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 96, no. 3, pp. 871-878, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 2006
    Keywords: Seismology ; Seismicity ; long ; distance ; Stress ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Borehole sting in Rift Valley Areas – Ground Water Potential in western Uganda, Case study Buliisa Rural Growth Center, Masindi District. The international conference on the East African Rift System (2005)
    In:  Mbeya, Tanzania
    Details
    Publication Date: 2005
    Keywords: CC 7 ; Coordinating Committee ; Continental Drilling ; International Commission for the Earth Sciences in Africa ; ICESA
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    BIBLIOGRAPHY ILP
  • 6
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    Electronic nose for space program applications (2003)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The ability to monitor air contaminants in the shuttle and the International Space Station is important to ensure the health and safety of astronauts, and equipment integrity. Three specific space applications have been identified that would benefit from a chemical monitor: (a) organic contaminants in space cabin air; (b) hypergolic propellant contaminants in the shuttle airlock; (c) pre-combustion signature vapors from electrical fires. NASA at Kennedy Space Center (KSC) is assessing several commercial and developing electronic noses (E-noses) for these applications. A short series of tests identified those E-noses that exhibited sufficient sensitivity to the vapors of interest. Only two E-noses exhibited sufficient sensitivity for hypergolic fuels at the required levels, while several commercial E-noses showed sufficient sensitivity of common organic vapors. These E-noses were subjected to further tests to assess their ability to identify vapors. Development and testing of E-nose models using vendor supplied software packages correctly identified vapors with an accuracy of 70-90%. In-house software improvements increased the identification rates between 90 and 100%. Further software enhancements are under development. Details on the experimental setup, test protocols, and results on E-nose performance are presented in this paper along with special emphasis on specific software enhancements. c2003 Elsevier Science B.V. All rights reserved.
    Keywords: Man/System Technology and Life Support
    Type: Sensors and actuators. B, Chemical (ISSN 0925-4005); Volume 93; 1-3; 7-16
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Effect of Palagonite Dust Deposition on the Automated Detection of Carbonate Vis/NIR Spectra (2004)
    In:  CASI
    Details
    Publication Date: 2018-06-11
    Description: Currently Mars missions can collect more data than can be returned. Future rovers of increased mission lifetime will benefit from onboard autonomous data processing systems to guide the selection, measurement and return of scientifically important data. One approach is to train a neural net to recognize spectral reflectance characteristics of minerals of interest. We have developed a carbonate detector using a neural net algorithm trained on 10,000 synthetic Vis/NIR (350-2500 nm) spectra. The detector was able to correctly identify carbonates in the spectra of 30 carbonate and noncarbonate field samples with 100% success. However, Martian dust coatings strongly affect the spectral characteristics of surface rocks potentially masking the underlying substrate rock. In this experiment, we measure Vis/NIR spectra of calcite coated with different thicknesses of palagonite dust and evaluate the performance of the carbonate detector.
    Keywords: Instrumentation and Photography
    Type: Lunar and Planetary Science XXXV: Mars: New Methods and Techniques; LPI-Contrib-1197
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Classification Experiments on Real-World Texture (2001)
    In:  Other Sources
    Details
    Publication Date: 2018-06-11
    Description: Many papers have been published concerning the analysis of visual texture and yet, very few application domains use texture for image classification. A possible reason for this low transfer of the technology is the lack of experience and testing in real-world imagery. In this paper, we assess the performance of texture-based classification methods on a number of real-world images relevant to autonomous navigation on cross-country terrain and to autonomous geology. Texture analysis will form part of the closed loop that allows a robotic system to navigate autonomously. We have implemented two different classifiers on features extracted by Gabor filter banks. The first classifier models feature distributions for each texture class using a mixture of Gaussians. Classification is performed using Maximum Likelihood. The second classifier represents local statistics using marginal histograms of the features over a region centered on the pixel to be classified. We measure system performance by comparison to ground truth image labels.
    Keywords: Instrumentation and Photography
    Type: Third Workshop on Empirical Evaluation Methods in Computer Vision, Kauai, Hawaii, December 10, 2001; Kauai, HI; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Radar Probing of Planetary Regoliths: An Example from the Northern Rim of Imbrium Basin (2006)
    In:  Other Sources
    Details
    Publication Date: 2018-06-11
    Description: Imaging radar measurements at long wavelengths (e.g., 〉30 cm) allow deep (up to tens of meters) probing of the physical structure and dielectric properties of planetary regoliths. We illustrate a potential application for a Mars orbital synthetic aperture radar (SAR) using new Earth-based 70-cm wavelength radar data for the Moon. The terrae on the northern margin of Mare Imbrium, the Montes Jura region, have diffuse radar backscatter echoes that are 2-4 times weaker at 3.8-cm, 70-cm, and 7.5-m wavelengths than most other lunar nearside terrae. Possible geologic explanations are (1) a pyroclastic deposit associated with sinuous rilles in this region, (2) buried mare basalt or a zone of mixed highland/basaltic debris (cryptomaria), or (3) layers of ejecta associated with the Iridum and Plato impacts that have fewer meter-sized rocks than typical highlands regolith. While radar data at 3.8-cm to 7.5-m wavelengths suggest significant differences between the Montes Jura region and typical highlands, the surface geochemistry and rock abundance inferred from Clementine UV-VIS data and eclipse thermal images are consistent with other lunar terrae. There is no evidence for enhanced iron abundance, expected for basaltic pyroclastic deposits, near the source vents of the sinuous rilles radial to Plato. The regions of low 70-cm radar return are consistent with overlapping concentric ''haloes'' about Iridum and Plato and do not occur referentially in topographically low areas, as is observed for radar-mapped cryptomaria. Thus we suggest that the extensive radar-dark area associated with the Montes Jura region is due to overlapping, rock-poor ejecta deposits from Iridum and Plato craters. Comparison of the radial extent of low-radar-return crater haloes with a model for ejecta thickness shows that these rock-poor layers are detected by 70-cm radar where they are on the order of 10 m and thicker. A SAR in orbit about Mars could use similar deep probing to reveal the nature of crater - and basin-related deposits.
    Keywords: Geophysics
    Type: Journal of Geophysical Research (ISSN 0148-0227); Volume 111
    Format: text
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  • 10
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    Planning for rover opportunistic science (2004)
    In:  Other Sources
    Details
    Publication Date: 2018-06-11
    Description: The Mars Exploration Rover Spirit recently set a record for the furthest distance traveled in a single sol on Mars. Future planetary exploration missions are expected to use even longer drives to position rovers in areas of high scientific interest. This increase provides the potential for a large rise in the number of new science collection opportunities as the rover traverses the Martian surface. In this paper, we describe the OASIS system, which provides autonomous capabilities for dynamically identifying and pursuing these science opportunities during longrange traverses. OASIS uses machine learning and planning and scheduling techniques to address this goal. Machine learning techniques are applied to analyze data as it is collected and quickly determine new science gods and priorities on these goals. Planning and scheduling techniques are used to alter the behavior of the rover so that new science measurements can be performed while still obeying resource and other mission constraints. We will introduce OASIS and describe how planning and scheduling algorithms support opportunistic science.
    Type: International Workshop on Planning and Scheduling for Space; Darmstadt; Germany
    Format: text
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