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  • 1
    Electronic Resource
    Electronic Resource
    The traveling inspector model (1986)
    Springer
    OR spectrum 8 (1986), S. 33-36 
    Details
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Zusammenfassung In dieser Arbeit betrachten wir ein Modell eines dynamischen Inspektionsprozesses, das wir “Traveling-Inspector-Modell” nennen. Das Problem wird formuliert als ein speziell strukturiertes stochastisches Zweipersonen-Nullsummenspiel, bei dem ein Spieler das Übergangsgesetz bestimmt. Wegen der speziellen Struktur kann das Problem mithilfe eines relativ einfachen linearen Programms gelöst werden.
    Notes: Summary In this note we introduce a model of a dynamic inspection process which we call “The Traveling Inspector Model.” The problem is formulated as a single-controller, zero-sum, undiscounted stochastic game, with some special structure. This structure ensures that the game is solvable by a relatively simple linear program.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01720770
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Nonlinear programming and stationary equilibria in stochastic games (1991)
    Springer
    Mathematical programming 50 (1991), S. 227-237 
    Details
    ISSN: 1436-4646
    Keywords: Stochastic game theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract Stationary equilibria in discounted and limiting average finite state/action space stochastic games are shown to be equivalent to global optima of certain nonlinear programs. For zero sum limiting average games, this formulation reduces to a linear objective, nonlinear constraints program, which finds the “best” stationary strategies, even whenε-optimal stationary strategies do not exist, for arbitrarily smallε.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01594936
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Bilinear programming and structured stochastic games (1987)
    Springer
    Journal of optimization theory and applications 53 (1987), S. 85-104 
    Details
    ISSN: 1573-2878
    Keywords: Stochastic games ; stationary strategies ; bilinear programming
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract One-step algorithms are presented for two classes of structured stochastic games, namely, those with additive rewards and transitions and those which have switching controllers. Solutions to such classes of games under the average reward criterion can be derived from optimal solutions to appropriate bilinear programs. The validity of using bilinear programming as a solution method follows from two preliminary theorems, the first of which is a complete classification of undiscounted stochastic games with optimal stationary strategies. The second of these preliminary theorems relaxes the conditions of the classification theorem for certain classes of stochastic games and provides the basis for the bilinear programming results. Analogous results hold for the discounted stochastic games with the above special structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938818
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Linear complementarity and discounted switching controller stochastic games (1992)
    Springer
    Journal of optimization theory and applications 73 (1992), S. 89-99 
    Details
    ISSN: 1573-2878
    Keywords: Ordered field property ; complementary pivots ; linear complementarity ; discounted switching controller ; stochastic games
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The class of discounted switching controller stochastic games can be solved in one step by a linear complementarity program (LCP). Following the proof of this technical result is a discussion of a special formulation and initialization of a standard LCP pivoting algorithm which has, in numerical experiments, always terminated in a complementary solution. That the LCP algorithm as formulated always finds a complementary solution has not yet been proven, but these theoretical and experimental results have the potential to provide an alternative proof of the ordered field property for these games. Numerical experimentation with the reformulated LCP is reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940080
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    Paper (German National Licenses)
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  • 5
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    The traveling inspector model (1986)
    Springer
    Details
    Publication Date: 1986-03-01
    Print ISSN: 0171-6468
    Electronic ISSN: 1436-6304
    Topics: Mathematics , Economics
    Published by Springer
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    PAPER CURRENT
  • 6
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    Linear complementarity and discounted switching controller stochastic games (1992)
    Springer
    Details
    Publication Date: 1992-04-01
    Print ISSN: 0022-3239
    Electronic ISSN: 1573-2878
    Topics: Mathematics
    Published by Springer
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    PAPER CURRENT
  • 7
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    Bilinear programming and structured stochastic games (1987)
    Springer
    Details
    Publication Date: 1987-04-01
    Print ISSN: 0022-3239
    Electronic ISSN: 1573-2878
    Topics: Mathematics
    Published by Springer
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    PAPER CURRENT
  • 8
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    Analysis of severe atmospheric disturbances from airline flight records (1989)
    In:  CASI
    Details
    Publication Date: 2013-08-29
    Description: Advanced methods were developed to determine time varying winds and turbulence from digital flight data recorders carried aboard modern airliners. Analysis of several cases involving severe clear air turbulence encounters at cruise altitudes has shown that the aircraft encountered vortex arrays generated by destabilized wind shear layers above mountains or thunderstorms. A model was developed to identify the strength, size, and spacing of vortex arrays. This model is used to study the effects of severe wind hazards on operational safety for different types of aircraft. It is demonstrated that small remotely piloted vehicles and executive aircraft exhibit more violent behavior than do large airliners during encounters with high-altitude vortices. Analysis of digital flight data from the accident at Dallas/Ft. Worth in 1985 indicates that the aircraft encountered a microburst with rapidly changing winds embedded in a strong outflow near the ground. A multiple-vortex-ring model was developed to represent the microburst wind pattern. This model can be used in flight simulators to better understand the control problems in severe microburst encounters.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: AGARD, Flight in Adverse Environmental Conditions; 7 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Analysis of severe atmospheric disturbances from airline flight records (1989)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Advanced methods were developed to determine time varying winds and turbulence from digital flight data recorders carried aboard modern airliners. Analysis of several cases involving severe clear air turbulence encounters at cruise altitudes has shown that the aircraft encountered vortex arrays generated by destabilized wind shear layers above mountains or thunderstorms. A model was developed to identify the strength, size, and spacing of vortex arrays. This model is used to study the effects of severe wind hazards on operational safety for different types of aircraft. The study demonstrates that small remotely piloted vehicles and executive aircraft exhibit more violent behavior than do large airliners during encounters with high-altitude vortices. Analysis of digital flight data from the accident at Dallas/Ft. Worth in 1985 indicates that the aircraft encountered a microburst with rapidly changing winds embedded in a strong outflow near the ground. A multiple-vortex-ring model was developed to represent the microburst wind pattern. This model can be used in flight simulators to better understand the control problems in severe microburst encounters.
    Keywords: AIR TRANSPORTATION AND SAFETY
    Type: NASA-TM-102186 , A-89111 , NAS 1.15:102186 , AGARD Flight Mechanics Panel Symposium-Flight in Adverse Environmental Conditions; May 08, 1989 - May 11, 1989; Gol; Norway
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Estimating Atmospheric Turbulence From Flight Records (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Method for estimation of atmospheric turbulence encountered by airplanes utilizes wealth of data captured by multichannel digital flight-data recorders and air-traffic-control radar. Developed as part of continuing effort to understand how airplanes respond to such potentially hazardous phenomena as: clear-air turbulence generated by destabilized wind-shear layers above mountains and thunderstorms, and microbursts (intense downdrafts striking ground), associated with thunderstorms. Reconstructed wind fields used to predict and avoid future hazards.
    Keywords: PHYSICAL SCIENCES
    Type: ARC-12589 , NASA Tech Briefs (ISSN 0145-319X); 15; 7; P. 45
    Format: text
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    NASA TECHNICAL REPORTS
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