Showing 121 - 140 results of 9,139 for search '"demand"', query time: 0.07s Refine Results
  1. 121

    On-Demand Beam Scheduling Technology of Low-Orbit High-Throughput Satellite by Shuai HAN, Yihang WU, Jixi LI, Zuting CHEN, Siyue SUN, Guang LIANG

    Published 2022-06-01
    “…Low-orbit high-throughput satellite internet can satisfy the increasing speed and connection density requirements of end users and provide users with all-weather low-latency ultra-broadband communication services.At the same time, how to adapt to the fl exible and unevenly distributed terrestrial service requirements in low-orbit downlink scenarios and improve system throughput is an urgent problem to be solved.Based on the modeling of the beamforming architecture of the low-orbit highthroughput satellite downlink system and the satellite-to-earth fading of the low-orbit satellite and the inter-beam interference of the high-throughput satellite, the low-orbit high-throughput satellite downlink channel model was established.Based on the research of the high-throughput satellite on-demand beam scheduling scheme, the beam scheduling optimization problem model was established to ensured the utilization of resources, and the on-demand beam scheduling technology for high-throughput satellite internet was proposed, the method of using a small amount of beams to cover multiple cells by using on-demand time division multiplexing improved the utilization rate of resources, effectively suppressed the interference between beams, and improved the throughput of the system.…”
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    Spatial Variation of Taxi Demand Using GPS Trajectories and POI Data by Xinmin Liu, Lu Sun, Qiuxia Sun, Ge Gao

    Published 2020-01-01
    “…Road density, parking lot density and bus station density are positively associated with the taxi demand. It is also found that the higher of the proportion of commercial area and public service area, the greater of the taxi demand, while the proportion of residential area and the land use mix have a negative impact on taxi demand. …”
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  6. 126

    Locating Station of One-Way Carsharing Based on Spatial Demand Characteristics by Xiaohong Chen, Jiaqi Cheng, Jianhong Ye, Yong Jin, Xi Li, Fei Zhang

    Published 2018-01-01
    “…This study aims to explore factors that affect carsharing demand characteristics in different time periods based on EVCARD transaction data, which is the largest station-based one-way carsharing program in Shanghai, China. …”
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    The Adaptive Performance Model of Marines: The Role of Job Demands and Crafting Strategy by Dwi Warih Untari, Fendy Suhariadi, Andreas Budihardjo

    Published 2022-10-01
    “…The results of the Structural Equation Model (SEM) analysis with AMOS 22 showed that: 1) the adaptive performance model offered for Marine Intermediate Officers is quite fit. 2) Job demands have a strong direct effect on adaptive performance. 3) Job crafting acts as a partial mediator between work demands and adaptive performance.…”
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  9. 129

    Developing a Fuzzy Logic Based on Demand Multicast Routing Protocol by Alireza Shams Shafigh, Kamran Abdollahi, Marjan Kouchaki

    Published 2012-01-01
    “…In this research, two efficient methods are proposed to improve the performance of On Demand Multicast Routing Protocol (ODMRP). The main proposed method tries to establish a small, efficient, and high-quality forwarding group. …”
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    A review of the determinants and prediction methods for off-channel water demand by HE Yanhu, XU Xiaodi

    Published 2025-01-01
    Subjects: “…water demand prediction…”
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    Reliability Modeling for Multistate System with Preventive Maintenance under Customer Demand by Jinlei Qin, Zheng Li

    Published 2020-01-01
    “…To improve the reliability of MSSs, a maintenance strategy has been adopted to satisfy customer demand, and reliability modeling of MSS with preventive maintenance and customer demand is proposed. …”
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    Low overhead on-demand routing protocol for mobile ad hoc networks by JIANG Guo-xing, YI Ming

    Published 2009-01-01
    “…To improve the performance of flooding,an efficient broadcasting algorithm with constrained flooding was proposed,this algorithm only selected efficient some from all routing packets to forward according to Euclidean Distance.A packet listening method,which could reduce route maintenance overhead and route discovery frequency,was studied,then a local route repair and optimization algorithm,which was based on node height and can repair the failure path due to link breakage,was presented.Furthermore,based on the efficient broadcasting algorithm and local route repair and optimization algorithm,a new on-demand routing protocol,named LOOR(low overhead on-demand routing),was proposed.The simulation results on ns2 show that LOOR can enhance the route robustness,decrease the average hop count,the route discovery frequency and the routing overhead obviously,and increase the packet delivery ratio.…”
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  18. 138

    Multimodal Green Logistics Network Design of Urban Agglomeration with Stochastic Demand by Jiehui Jiang, Dezhi Zhang, Shuangyan Li, Yajie Liu

    Published 2019-01-01
    “…This study investigates a multimodal green logistics network design problem of urban agglomeration with stochastic demand, in which different logistics authorities among the different cities jointly optimize the logistics node configurations and uniform carbon taxes over logistics transport modes to maximize the total social welfare of urban agglomeration and consider logistics users’ choice behaviors. …”
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