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Cross-Provider Cooperation for Network-Based Localization
Published in Chao Gao, Guorong Zhao, Hassen Fourati, Cooperative Localization and Navigation, 2019
Many researchers have studied hybrid positioning schemes from the signal level, including AOA/TDOA [9], TOA/TDOA [24], and TOA/RSS [20,22]. A few studies try to combine multiple wireless technologies, such as GPS-based methods [32] and GSM/UMTS [33]. Unlike these combination schemes, the proposed approach attempts to combine the location estimations from each network provider. Connecting multiple providers is possible based on current hardware. In an emergency situation, traditional GSM devices can connect to an alternative operator other than the one for the inserted SIM card. Recently, the dual-SIM mobile phones have been developed so that users can incorporate two SIM cards into one handset. These phones have become more and more popular, and even triple-SIM phones are available from the Chinese market. This inspires us to develop cross-provider cooperation approaches to improve mobile positioning.
Computing Devices
Published in David R. Martinez, Robert A. Bond, Vai M. Michael, High Performance Embedded Computing Handbook, 2018
Dual-core processors—essentially two complete microprocessors on a single chip—have become very popular, with all of the major microprocessor manufacturers now offering dual-core versions of their popular CPUs. Intel has dual-core versions of its Pentium and Xeon processors, including Pentium-D, the ultralow-voltage dual-core Xeon ULV, which is aimed at embedded applications, as well as their new Core2 Duo processor. AMD now has a dual-core Opteron as well. Freescale is offering a dual-core PowerPC, the MPC8641D, which consists of dual e600 PowerPC cores, Power-QUIC system controller, and PCI Express/serial RapidIO interfaces on one chip. The IBM PowerPC 970MP is a dual-core version of the 970FX. Quad-core processors are on the horizon as well. Intel has announced two new quad-core processors, the quad-core Xeon 5300 aimed at the server market and the quad-core Core2 Extreme processor aimed at the desktop market. Intel’s quad-core processors consist of a pair of dual-core dice integrated onto a single substrate.
Future Computing
Published in Kirk Hausman, Sustainable Enterprise Architecture, 2011
Although most enterprise environments may not need a visualization studio of the magnitude of the Stallion installation, the combined power of multiple computers for processing, storage, visualization, and rendering data is increasingly valuable. As distribution and industrial systems grow larger and more complex, supervisory control and data acquisition (SCADA) becomes more complex as well, and financial calculations become more deeply integrated into real-time data presentation. Large-scale visualization systems become increasingly more valuable in the enterprise. Most organizations now recognize the value of dual monitors for workstations used in comparative analysis or document creation when using reference materials.
Multi-objective optimization of gearshift trajectory planning for multi-speed electric vehicles
Published in Engineering Optimization, 2022
Kegang Zhao, Ziqi Li, Yuzhong Chen, Yanwei Liu
The use of electric vehicles (EVs) is an effective way to alleviate environmental and energy problems (Shin, Jung, and Oh 2017; Li et al.2018; Li, Khajepour, and Song 2019). EVs are typically equipped with single-speed transmissions, but these can hardly meet the increasing performance demand for EVs. Research shows that the application of multi-speed transmissions can effectively reduce energy consumption and considerably improve launching and acceleration performance (Urbina Coronado, Castañón, and Ahuett-Garza 2018; Liu et al.2020). For example, Sorniotti et al. (2011) demonstrated the potential advantages of a two-speed transmission for power performance and energy consumption. Among the various multi-speed transmissions, the dual-clutch transmission (DCT) has advantages such as high transmission efficiency and uninterrupted torque transfer (Walker, Zhang, and Tamba 2011; Berkel et al.2014). Thus, research on multi-speed transmissions for EVs has garnered substantial interest, and the application of the two-speed DCT in EVs is accordingly discussed in this article.