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  • 1
    Electronic Resource
    Electronic Resource
    Bingley : Emerald
    International journal of operations & production management 22 (2002), S. 806-819 
    ISSN: 0144-3577
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: This paper presents our experience in the development of an expert system to be used for detailed scheduling in an industrial company. This was a middle-sized company which builds metallic components for the automotive industry. Because of the complexity of the environment where it has to work, with many interactions between related functions in the company, the development of this system has required a great deal of collaboration among different experts. So, we had to develop a more sophisticated methodology for this development. The conclusions extracted from this work lead us to a generalization of the methodology employed, which is also presented here.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2015-09-04
    Description: Author(s): Francisco Sastre, Ana Laura Benavides, José Torres-Arenas, and Alejandro Gil-Villegas In this work we extend the applicability of the microcanonical ensemble simulation method, originally proposed to study the Ising model [A. Hüller and M. Pleimling, Int. J. Mod. Phys. C 13 , 947 (2002) ], to the case of simple fluids. An algorithm is developed by measuring the transition rates probabi… [Phys. Rev. E 92, 033303] Published Thu Sep 03, 2015
    Keywords: Computational Physics
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
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  • 3
    Publication Date: 2012-07-20
    Print ISSN: 0932-8092
    Electronic ISSN: 1432-1769
    Topics: Computer Science
    Published by Springer
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  • 4
    Publication Date: 2018-05-25
    Electronic ISSN: 1996-1944
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 5
    Publication Date: 2020-03-02
    Description: Packaging design is one of the potential strategies for increasing logistics performance, not only from a cost reduction perspective, but also from a sustainable point of view. The deployment of a sustainable vision in packaging design should demand a holistic view of packaging, supply chain and product; this integrated vision is the main point of the “Sustainable Packaging Logistics” (SPL) approach. At a logistics level, a key link with the different stages of the supply chain is the secondary packaging, which most commonly takes the form of a corrugated cardboard box. Thus, the main objective of this paper is to develop a systematic and dynamic method that makes it possible to connect design decisions about the dimensions of that box with their impact on overall efficiency and sustainability of the supply chain. In order to develop this model, the impact on three different logistics systems is described. Those systems are palletizing, multimodal containers and parcel services. Likewise, in addition to proposing the theoretical model, the authors have tested it successfully in three different companies (with the three logistics systems mentioned) following the “action research” approach.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
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  • 6
    Publication Date: 2019-05-08
    Description: No abstract available
    Keywords: Administration and Management; Mechanical Engineering
    Type: ARC-E-DAA-TN61868
    Format: application/pdf
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  • 7
    Publication Date: 2019-07-20
    Description: We present a robust initialization scheme that estimates parameter values for the numerical solution of a two-point boundary value problem. The two-point boundary value problem formulation stems from the optimization of a cost functional subject to the dynamics of a simplified lateral aircraft model and other constraints. Leveraging regular perturbation methods, initial parameter estimates are analytically determined and used to initialize a gradient descent optimization routine which is shown to rapidly converge over a range of initial aircraft positions and heading angles. Additionally, the velocity of the aircraft is optimized to ensure the trajectory of the aircraft terminates within a desired region in both time and space.
    Keywords: Cybernetics, Artificial Intelligence and Robotics; Aircraft Stability and Control
    Type: ARC-E-DAA-TN5446 , InfoTech @ Aerospace Conference 2012; Jun 19, 2012 - Jun 21, 2012; Garden Grove, CA; United States
    Format: application/pdf
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  • 8
    Publication Date: 2019-07-13
    Description: Free-flying space robots can be used when humans are present to off-load routine work, to increase astronaut productivity, and to handle contingencies. The International Space Station (ISS), for example, is a continuously manned orbital laboratory the size of a large house, which contains many thousands of inventory items and hundreds of diverse payloads and experiments - all of which have to be managed by 6 person crew. To help with this, NASA is developing and testing robotic free-flyers on the ISS. SPHERES (Synchronized Position Hold, Engage, Reorient, Experimental Satellites) is an ISS facility with three nano-satellites designed to research estimation, control, and autonomy algorithms. SPHERES are volleyball-sized, have their own power, propulsion and navigation systems, and work on the ISS under astronaut supervision. For more than 10 years, NASA has made SPHERES available to other U.S. government agencies, schools, commercial companies and students as a platform for science, technology development, and education. SPHERES will soon be succeeded by the new Astrobee free-flying robot. Astrobee builds on the success of SPHERES, but in addition to research, the robot will also be used for housekeeping and monitoring duties without astronaut supervision. Astrobee makes extensive use of open-source (the complete software stack is available on GitHub) and is scheduled to be installed on the ISS in late Spring 2018.
    Keywords: Cybernetics, Artificial Intelligence and Robotics; Spacecraft Design, Testing and Performance; Social and Information Sciences (General)
    Type: ARC-E-DAA-TN49360 , Google Tech Talk; Nov 15, 2017; Mountain View, CA; United States
    Format: application/pdf
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  • 9
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    In:  CASI
    Publication Date: 2019-07-13
    Description: The Evolving Commercial Laboratory: What's Next in Research CapabilitiesAdvancing the research capabilities that are present on the International Space Station is critical to the future of advancing space based R&D as well as enabling a commercial economy in LEO. The options for ISS research are constantly adapting and many new research capabilities are here today and on the horizon. This session will feature presentations and an open discussion with commercial facility providers who are leading a renaissance of in-orbit capabilities that are updating and expanding the R&D opportunities that are available to microgravity and space based researchers aboard the International Space Station.
    Keywords: Astronautics (General)
    Type: ARC-E-DAA-TN59094 , International Space Station Research and Development Conference (ISSR&D 2018); Jul 23, 2018 - Jul 26, 2018; San Francisco, CA; United States
    Format: application/pdf
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  • 10
    Publication Date: 2019-07-13
    Description: This paper presents application of the modified reference model MRAC (M-MRAC) method to control the relative position and orientation of a cluster of satellites known collectively as the Synchronized Position Hold, Engage, Reorient Experimental Satellites (SPHERES). The approach uses fast estimation algorithms to achieve guaranteed tracking of reference commands for both input and output signals in the presence of uncertainties in mass and inertia data and external disturbances. The tracking errors can be systematically decreased by the proper selection of the design parameters in the identification model. The generated control signals have acceptable magnitudes and exhibit no oscillations. The benefits of the method are demonstrated in numerical simulations.
    Keywords: Space Communications, Spacecraft Communications, Command and Tracking; Spacecraft Design, Testing and Performance
    Type: ARC-E-DAA-TN15573 , 2015 AIAA SciTech Forum; Jan 05, 2015 - Jan 09, 2015; Kissimmee, FL; United States
    Format: application/pdf
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