1–20 von 527 Ergebnissen
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    Broadcast ephemeris SISRE assessment and systematic error characteristic analysis for BDS and GPS satellite systems

    Jiang, Nana / Cao, Yueling / Xia, Fengyu et al. | Elsevier | 2024
    Abstract This study comprehensively evaluated the signal-in-space range ...

    Carbon Emissions Reduction in Vehicle Routing Problems with Split Deliveries and Pickups

    Jin, Cheng / Lu, Lijun / Min, Jianing | Springer Verlag | 2023

    In order to reduce the carbon emissions generated by vehicles during the logistics distribution, a green vehicle

     ...
    Schlagwörter: Operations Management , Operations Research/Decision Theory

    Study on Low-Carbon Emissions in Vehicle Routing Problems with Split Deliveries and Pickups

    Jin, Cheng / Lu, Lijun / Min, Jianing | Springer Verlag | 2023
    Schlagwörter: Operations Management , Operations Research/Decision Theory

    Orion Artemis I as Flown MMOD Analysis

    Kevin D Deighton / Eric L Christiansen / Dana M Lear et al. | NTRS | 2023
    to aid in improving the analysis, including the environment models. The comparison showed that Bumper analysis predictions were generally ...
    Schlagwörter: Systems Analysis and Operations Research

    Tactical Planning of Public Transport Services: Vehicle and Crew Schedules

    Gkiotsalitis, Konstantinos | Springer Verlag | 2023

    In the previous chapters on the tactical planning of public transport services we concentrated on the setting of

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    Schlagwörter: Operations Research, Management Science

    Tactical Planning of Public Transport Services: Frequencies and Timetables

    Gkiotsalitis, Konstantinos | Springer Verlag | 2023

    In the previous chapter we concentrated on the strategic planning phase of public transport services, including

     ...
    Schlagwörter: Operations Research, Management Science

    Time-Varying Lyapunov Control Laws with Enhanced Estimation of Distribution Algorithm for Low-Thrust Trajectory Design

    Shirazi, Abolfazl / Holt, Harry / Armellin, Roberto et al. | Springer Verlag | 2023

    Enhancements in evolutionary optimization techniques are rapidly growing in many aspects of engineering

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    Schlagwörter: Operations Research, Management Science

    A Preliminary Research on Space Situational Awareness Based on Event Cameras

    Xiao, Kun / Li, Pengju / Wang, Guohui et al. | IEEE | 2022
    , low bandwidth and low power consumption. We carried out a series of observation experiments in a simulated space lighting environment. The ...

    Numerical Investigation of Thermo-Mechanical Behaviour of an Aluminum-Silicon Alloy Piston in an IC Engine

    Khan, Shah Nawaz / Usman, Ali / Mourad, Abdel-Hamid Ismail et al. | IEEE | 2022
    Increasing the power to volume density of an engine has been a significant research concern. A turbocharger is usually utilized to boost ...

    Full-Scale 3D Heavy Haul Train-Track Dynamics Modelling Method

    Wu, Qing / Spiryagin, Maksym / Cole, Colin | Springer Verlag | 2022
    implementations of such simulations can unlock a series of research topics such as vehicle derailments in train operational environment and track dynamics ...

    Self-Powered Dust Mitigation on the Moon

    Choi, Sang H. / Moses, Robert W. | ASCE | 2021
    at NASA Langley Research Center to demonstrate feasibility of a prototype in a simulated lunar environment. Further work is intended to ...

    Granular Morphology and Mineralogical Composition for Modeling Lunar Dust Behavior

    Deitrick, S. R. / Bullard, J. / Shumaker, N. et al. | ASCE | 2021
    the Moon, but also in situ resource utilization (ISRU) efforts such as resource processing, resource excavation, and in situ construction ...

    Quality Assessment of 3D Printed Products

    Soliman, Essam / Alzahrani, Bander | IEEE | 2021
    The present research considered the effects of different 3D printing parameters on the quality of 3D printed products. The parameters ...

    Air Transportation Direct Share Time Series Forecasting: A Hybrid Model

    Zheng, Xufang / Wei, Peng | AIAA | 2020
    role in air transportation planning and development. An accurate forecasting of the O&D direct share time series can benefit the air ...
    Schlagwörter: Airport Operations

    New Model and Analytical Review of Approaches to Buckling Problem Investigation of Structurally Anisotropic Aircraft Panels Made from Composite Materials

    Gavva, L. M. | Springer Verlag | 2020
    composite structure design in the field of production technology is the outlook research trend. New mathematical model relations for the buckling ...

    Spacecraft Anomaly Detection via Transformer Reconstruction Error

    Meng, Hengyu / Zhang, Yuxuan / Li, Yuanxiang et al. | Springer Verlag | 2020
    models, due to its ignoring distance. In this paper, we continue the research on transformer and propose a transformer-based architecture, masked ...

    IAMAS: a century of international cooperation in atmospheric sciences

    Freier Zugriff
    MacCracken, Michael C. / Volkert, Hans | Deutsches Zentrum für Luft- und Raumfahrt (DLR) | 2019
    expansion of global trade, better public warnings of extreme weather, and safer and more effective military operations. Since its foundation, in ...
    Schlagwörter: atmospheric research

    Research on the Best Booking Strategy for Air Tickets Based on Big Data Analysis

    Yang, Lei / Wang, Xiaoquan | Springer Verlag | 2019
    ticket prices to change dynamically. Research on the best booking strategy for air tickets can help travelers to choose a reasonable booking time ...
    Schlagwörter: Operations Research/Decision Theory

    Coping with Uncertainties in Predicting the Aircraft Turnaround Time at Airports

    Asadi, Ehsan / Evler, Jan / Preis, Henning et al. | British Library Conference Proceedings | 2019

    Examination and Application of Aircraft Reliability in Flight Scheduling and Tail Assignment

    Lindner, Martin / Fricke, Hartmut | British Library Conference Proceedings | 2019