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One of the core principles of the SAP HANA database system is the comprehensive support of distributed query facility. Supporting scale-out scenarios was one of the major design principles of the system from the very beginning. Within this paper, we first give an overview of the overall functionality with respect to data allocation, metadata caching and query routing. We then dive into some level...
Methods of multi-objective optimization are proposed to account for tolerance of design variable and variation in problem parameter. The post-optimization effort is initiated from deterministic Pareto-optimal solutions that were obtained from NSGA-II. The successive process to determine search directions and step sizes toward conservative multi-objective solutions was conducted by design of experiments...
Time and frequency alignment is critical for ensuring QoS for application such as voice, real-time video, wireless hand-off, and data over a converged access medium. To satisfy the accuracy of time synchronization, both adjusting Communication path asymmetry and ratio of frequency between the time-aware systems are important. Network Time Protocol (NTP) is not satisfies time-sensitive applications...
An efficient method for transmitting the robot control data over wireless Internet based on UDP protocol is proposed. The method allocates the highest priority to the robot control data and transmits them multiply from the base station. Simulation results show that very low packet delay and low packet errors can be achieved by the proposed method.
Time and frequency alignment is critical for ensuring QoS for applications such as voice, real-time video, wireless hand-off, and data over a converged access medium. To satisfy the accuracy of time synchronization, propagation delay measurement is required between time-sensitive devices. There is existing network technology for time synchronization, such as network time protocol (NTP), IEEE 1588...
With the growth of digital media devices, researchers are developing techniques for transmission of real-time trafficover the network. Above all, network techniques that utilize Ethernet are in the limelight because of the advantages of Ethernet. A standardized network technique for isochronous traffic over Ethernet is in progress in IEEE 802.1 Audio/Video Bridge Task Group (AVB TG). This paper proposes...
This paper presents the turbo part of the advanced VSB (A-VSB) system which is proposed for the terrestrial television broadcast system. The turbo VSB system makes 8 VSB signals robust by introducing a strong forward-error-correction code called turbo code.
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