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  • 1
    Online Resource
    Online Resource
    Earth Observation Satellites : Task Planning and Scheduling (2023)
    Singapore :Springer Nature Singapore :
    Details
    Keywords: Astronomy Observations. ; Aerospace engineering. ; Astronautics. ; Measurement. ; Measuring instruments. ; Solid state physics. ; Astronomy, Observations and Techniques. ; Aerospace Technology and Astronautics. ; Measurement Science and Instrumentation. ; Electronic Devices.
    Description / Table of Contents: 1. Introduction -- 2. Problem description and analysis of EOS task scheduling -- 3. Model and method of ground centralized EOS task scheduling -- 4. EOS Task rescheduling for dynamic factors -- 5. Model and method of ground distributed EOS task scheduling -- 6. Model and method of EOS onboard autonomous task scheduling -- 7. Satellite task scheduling system -- 8. Summary and prospect.
    Abstract: This book highlights the practical models and algorithms of earth observation satellite (EOS) task scheduling. EOS task scheduling is a typical complex combinatorial optimization problem with NP-Hard computational complexity. It is a key technology in aerospace scheduling and has attracted global attention. Based on the actual needs of the EOS operation control center, the book summarizes and reviews the state of the art in this research and engineering field. In both deterministic scenarios and dynamic scenarios, the book elaborates on the typical models, algorithms, and systems in centralized, distributed, and onboard autonomous task scheduling. The book also makes an outlook on the promising technologies for EOS task planning and scheduling in the future. It is a valuable reference for professionals, researchers, and students in satellite-related technology. This book is a translation of an original Chinese edition. The translation was done with the help of artificial intelligence. A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation.
    Type of Medium: Online Resource
    Pages: XII, 189 p. 76 illus., 67 illus. in color. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9789819935659
    URL: https://doi.org/10.1007/978-981-99-3565-9
    DOI: 10.1007/978-981-99-3565-9
    DDC: 520
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Hydrodynamic effects on domain growth in off-critical polymer blends (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 108 (1998), S. 6006-6013 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Starting from a coarse-grained model, which includes hydrodynamic interactions, we numerically study kinetics of phase separation in a two-dimensional model of a polymer blend. In the absence of hydrodynamics, domains grow according to the Lifshitz–Slyozov power law without any evidence of pinning, regardless of the relative concentration of the blend components. In the presence of hydrodynamics, our results suggest that critical and off-critical mixtures are characterized by different growth laws. For the critical composition of the blend, hydrodynamic effects are found to be important during the entire growth process and this leads to a larger growth exponent. On the other hand, for off-critical blends, hydrodynamic effects are important only for blends with volume fraction not far away from the critical value. Even in these cases, domains show a faster growth only at intermediate times under the influence of hydrodynamics; subsequently the growth exponent crosses over to a Lifshitz–Slyozov value at late times. This gives strong support to the argument that the apparent pinning of domain growth observed in experiments on off-critical polymer blends may be due to this crossover phenomenon. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.476013
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  • 3
    Electronic Resource
    Electronic Resource
    Morphology of thin block copolymer films on chemically patterned substrates (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 108 (1998), S. 6897-6905 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We present results from a numerical study of a coarse-grained model of di-block copolymer (BCP) thin films confined between two hard walls. One of these walls is neutral to the components of the BCP melt and the other one contains chemical inhomogeneities with a repeat spacing length scale comparable to the linear size of the BCP molecules. We find that the morphology of the BCP thin film is strongly influenced by the commensurability between the bulk unconstrained lamellar size λ*, and the linear size of the surface inhomogeneities w. When w(approximate)λ*/2, the ordered morphology of the diblock copolymers has a strong overlap with the pre-assigned substrate chemical pattern throughout the film. However, for w(approximate)λ*, the overlap strongly depends on the distance from the substrate surface. Close to the substrate surface, the overlap of the morphology with the pre-assigned chemical pattern is large but the pattern becomes out-of-phase at a distance of approximately λ*/2 from the substrate. For w(approximate)3λ*/4, the morphology of the diblock copolymers is either similar to that for w(approximate)λ*/2 or for w(approximate)λ*, depending on the film thickness. For some film thickness, the morphology shows a mixed characteristics of the morphologies for w(approximate)λ*/2 and w(approximate)λ*.© 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.476118
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  • 4
    Electronic Resource
    Electronic Resource
    Removal of residual carboxylic acid groups from cellulosic membranes and sephadex (1972)
    s.l. : American Chemical Society
    Biochemistry 11 (1972), S. 3559-3564 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00769a010
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  • 5
    Electronic Resource
    Electronic Resource
    Antibodies to the carboxyl-terminal fragment of human chorionic gonadotropin .beta.-subunit: characterization of antibody recognition sites using synthetic peptide analogs (1978)
    s.l. : American Chemical Society
    Biochemistry 17 (1978), S. 575-580 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00597a003
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  • 6
    Electronic Resource
    Electronic Resource
    A model of dc glow discharges with abnormal cathode fall (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 154-162 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model for an abnormal glow discharge, including a self-consistent analysis of the cathode fall, was developed. It combines microscopic particle simulation by means of Monte Carlo methods with a fluid model of the gas discharge. The model allows calculations of the steady-state electrical field distribution, the charged-particle densities, and the current densities along the axis of the discharge. The model was used to simulate a glow discharge in 80% He and 20% SF6 at a pressure of 8 Torr with a current density of 1 A/cm2. The computed discharge voltage agrees well with measured values. The computer code can easily be modified to describe the charged-particle densities and energies not only in the cathode fall region, but in any plasma boundary layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345294
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  • 7
    Electronic Resource
    Electronic Resource
    Phenomenological unloaded Q-factor theory for magnetostatic-wave straight-edge resonators (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5492-5494 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A phenomenological unloaded Q-factor (Qu) theory has been derived for all the three kinds of magnetostatic-wave straight-edge resonators (MSW-SERs), i.e., forward volume wave (MSFVW), backward volume wave (MSBVW), and surface wave (MSSW). It turns out that the Qu values of MSW-SERs are very close to that of the uniform precession mode with the exception of MSSW-SERs and MSBVW-SERs operating at frequencies below 3 GHz. The experimental responses on MSFVW-SERs are in good agreement with those predicted by the present theory
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345861
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  • 8
    Electronic Resource
    Electronic Resource
    Relaxations of nonpolar zinc blende (110) surface of GaN, AlN, and BN (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 84 (1998), S. 1977-1980 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The relaxations of zinc blende GaN, AlN, and BN (110) surfaces have been studied systematically by ab initio total energy calculations. We find that the surface rotation angle of GaN(110) is larger than that of AlN(110) and the surface bond contraction of GaN(110) is smaller than that of AlN(110). The surface relaxations of GaN(110) and AlN(110) could be understood by electrostatic attraction between anion and cation. The BN(110) surface shows the largest surface rotation angle and surface bond contraction and this behavior could be explained by the covalent and double bonding characters between boron and nitrogen atoms. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.368330
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  • 9
    Electronic Resource
    Electronic Resource
    Site-Directed Mutagenesis of Tyrosine-71 to Phenylalanine in Citrobacter freundii Tyrosine Phenol-Lyase: Evidence for Dual Roles of Tyrosine-71 as a General Acid Catalyst in the Reaction Mechanism and in Cofactor Binding (1995)
    s.l. : American Chemical Society
    Biochemistry 34 (1995), S. 12276-12283 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00038a023
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  • 10
    Electronic Resource
    Electronic Resource
    Conformational properties of polyelectrolyte brushes: A Monte Carlo and self-consistent-field study (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 1579-1588 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We present and compare results from Monte Carlo and self-consistent-field studies of a grafted brush of polyelectrolyte chains (of length N), interacting via a screened-Coulombic potential. We examine the brush under a variety of grafting and screening conditions and investigate the various régimes of this system. The agreement between Monte Carlo and self-consistent-field methods is quite good. When the effective interaction strength is reasonably large, and the screening is strong, the polyelectrolyte brush behaves like a neutral brush with an effective excluded volume parameter, in agreement with previous scaling studies. For weaker screenings, we find and describe some region where the behavior of the brush height H resembles the H∼N3 prediction made by Pincus, and more recently by von Goeler and Muthukumar. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.470746
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