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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Viewgraphs on an overview of fuzzy logic are presented. Topics covered include: fuzzy control system; fuzzy logic; fuzzy inference; fuzzy co...

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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents

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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; A primary flight display format was integrated with the flight guidance and control system logic in support of various flight tests conducte...

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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents

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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents

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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; The results of a two year study of the mechanisms of spall failure in the HPOTP bearings are described. The objective was to build a foundat...

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Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; The design criteria for cascade Joule-Thomson refrigerators for cooling in the temperature range from 300 K to 4.2 K were studied. The syste...

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Description: National Geomatics Center of China, Beijing, 100830, China. The knowledge representation model plays an important role in the dynamic extracting and web service for Land Cover Change. While former researches were mainly focus on the represent of Spatio-temporal data itself, fewer of them attended the relations of Land Cover Information associated with change. This paper focused on the Land Cover Representation Model, and presented a knowledge representation model for LCC using temporal logic and operation relations. Firstly, we analyses the new demanding of change information service for web publishing, secondly, we discuss the temporal logic of snapshots and increments; then we introduce a method to represent the operation relations between snapshots and increments; finally we construct a knowledge representation for Land Cover Change based on the temporal logic and operation relations....

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Description: Germany. Semi-GlobalMatching (SGM) is a robust stereo method that has proven its usefulness in various applications ranging from aerial image matching to driver assistance systems. It supports pixelwise matching for maintaining sharp object boundaries and fine structures and can be implemented efficiently on different computation hardware. Furthermore, the method is not sensitive to the choice of parameters. The structure of the matching algorithm is well suited to be processed by highly paralleling hardware e.g. FPGAs and GPUs. The drawback of SGM is the temporary memory requirement that depends on the number of pixels and the disparity range. On the one hand this results in long idle times due to the bandwidth limitations of the external memory and on the other hand the capacity bounds are quickly reached. A full HD image with a size of 1920 × 1080 pixels and a disparity range of 512 pixels requires already 1 billion elements, which is at least several GB of RAM, depending on the element size, wich are not available at standard FPGA- and GPUboards. The novel memory efficient (eSGM) method is an advancement in ...

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Description: Technische Universität, Kaiserslautern, Germany. Modern CMOS processes in the Deep Submicron regime are restricted to supply voltages below 2 volts and further to account for the transistors' field strength limitations and to reduce the power per logic gate. To maintain the high switching performance, the threshold voltage must be scaled according with the supply voltage. However, this leads to an increased subthreshold current of the transistors in standby mode (V_GS=0). Another source of leakage is gate current, which becomes significant for gate oxides of 3nm and below.

We propose a Self-Biasing Virtual Rails (SBVR) - CMOS technique which acts like an adaptive local supply voltage in case of standby mode. Most important sources of leakage currents are reduced by this technique. Moreover, SBVR-CMOS is capable of conserving stored information in sleep mode, which is vital for memory circuits.

Memories are exposed to radiation causing soft errors. This well-known problem becomes eve...

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Description: CETEMPS, Università dell'Aquila, L'Aquila, Italy. A model-based fuzzy classification method for C-band polarimetric radar data, named Fuzzy Radar Algorithm for Hydrometeor Classification at C-band (FRAHCC), is presented. Membership functions are designed for best fitting simulation data at C-band, and they are derived for ten different hydrometeor classes by means of a scattering model, based on T-Matrix numerical method. The fuzzy logic classification technique uses a reduced set of polarimetric observables, i.e. copolar reflectivity and differential reflectivity, and it is finally applied to data coming from radar sites located in Gattatico and S. Pietro Capofiume in North Italy. The final purpose is to show qualitative accuracy improvements with respect to the use of a set of ten bidimensional MBFs, previously adopted and well suited to S-band data but not to C-band data....

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Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection

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Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection

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Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection

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Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection

Description Details
Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection

Description Details
Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection