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Potassium‐ion batteries (PIBs) are deemed as one of the most promising energy storage systems due to their high energy density and low cost. However, their commercial application is far away from satisfactory because of limited suitable electrode materials. Herein, core‐shell structured WSe2@N‐doped C nanotubes are rationally designed and synthesized via selenizing WO3@ polypyrrole for the first time...
Lithium-sulfur (Li-S) battery as one of the most attractive candidates for energy storage systems has attracted extensive interests. Herein, for the first time, hierarchical flower-like cobalt phosphosulfide architectures (defined as “CoSP”) derived from Prussian blue analogue (PBA) was fabricated through the conversion of Co-based PBA in PxSy atmosphere. The as-prepared polar CoSP could effectively...
Internet of Things is one of the hottest topics in both industry and academia of the communication engineering world. On the other hand, wireless mesh networks, a network topology that has been discuss for decades that haven't been put into use in large scale, can make a difference when it comes to the network in the IoT world today. This paper is a brief introduction of how these technologies has...
In big data era, individuals are surrounded by various kinds of social medium, such as Facebook, Twitter and Microblog. These social media produce vast information every day and support diverse social contagions. However, the dynamics and mechanisms of these social contagions are still obscure and unrevealed because of the big data. In this paper, we propose a novel non-Markovian social contagion...
A battery-less Tire Pressure Monitoring System (TPMS) prototype based on inductive coupling is presented in this paper. A special power recovery circuit is designed and implemented in 0.35µm 14V HVCMOS takes place of battery as power supply. The power is delivered by a 2.25W@13.56MHz transmitter and transferred over 65cm to achieve DC voltage at 3V with intermittent current of 10mA as power supply...
Localization is the foundation of several techniques and applications and plays an important role in Wireless sensor network (WSN). A variety of localization algorithms are based on Received Signal Strength Indicator (RSSI). Although the RSSI-based localization technology needs no additional hardware, the accuracy of this method could not meet the requirements of some applications. A novel Localization...
The selection of routes is an important issue in wireless networks when network coding is used. Existing research formulate network-coding-aware routing as a linear optimization program. However, deploying such method in real wireless networks is impractical. To solve this issue, in this paper, a practical network-coding aware routing protocol is proposed for unicast sessions in wireless networks...
Topology control is one of the most important energy-saving techniques used in wireless sensor networks. It has evolved into two dominant research directions: power control and sleep scheduling. Although many topology control algorithms and protocols are claimed to be highly energy-efficient, this is not necessarily the case in real systems due to various isolated considerations. In this paper, based...
The selection of routes is an important issue in wireless networks when network coding is used. Existing researches formulated network-coding-aware routing as a linear optimization program. However, deploying such method in real wireless networks is impractical. To solve this issue, in this paper, a practical network-coding-aware routing protocol is proposed for unicast sessions in wireless networks...
Energy consumption and timely requirements are two key factors affecting the performance of mission-critical cyber-physical systems. Little work deals with scheduling a set of time-sensitive services in a finite time interval. We consider a server serving N users in time interval [0, T]. Each user demands its service to be completed in a strict deadline. Based on convex power-speed relationship, a...
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