A novel Cu–O–Ni channel with electron transfer from Cu to Ni was constructed inhibit the overoxidation of 3+ and guarantee reversible 2+ /Ni cycling, which led high methanol oxidation activity at elevated current density.

Continuous and remote health monitoring medical applications with heterogeneous requirements can be realized through wireless body area networks (WBANs). Energy harvesting is adopted to enable low-power long-term without battery replacement, which have drawn significant interest recently. Because energy WBANs are obviously different from battery-powered ones, network protocols should designed accordingly improve performance. In this article, an efficient cross-layer media access control...

The medium access control (MAC) protocol should provide an efficient broadcast service to support the high-priority safety applications in vehicular ad hoc networks (VANETs). Basic messages (BSMs) transmitted through vehicle-to-vehicle and vehicle-to-infrastructure architectures are most fundamental of these applications. periodic transmission BSMs results a heavy burden on load VANETs when traffic density is high, presence hidden terminals degrade performance network. This letter introduces...

Abstract Driver steering intention prediction provides an augmented solution to the design of onboard collaboration mechanism between human driver and intelligent vehicle. In this study, a multi-task sequential learning framework is developed predict future torques postures based on upper limb neuromuscular electromyography signals. The joint representation for driving in-depth understanding accurate modelling behaviours. Regarding different testing scenarios, two modes, namely, both-hand...

Vehicular ad hoc networks (VANETs) can improve the safety during traffic by enabling cooperative communication among vehicles. The media access control (MAC) protocol should be well designed so that messages exchanged efficiently and reliably. Because vehicles move fast on road, network topology changes rapidly, which makes it harder to design MAC protocol. This article introduces SCMAC, a slotted-contention-based time-division multiple SCMAC combines advantages of contention-based protocols...

Abstract Recently, there has been increasing interest in intelligent transport systems and connected vehicles. Vehicular ad hoc networks play an important role these areas. Many time‐division multiple access (TDMA)–based protocols have proposed to obtain lower transmission delay packet loss rate. However, collisions occur when nodes that belong the same two‐hop set use time slot TDMA‐based protocols. Meanwhile, reacquire slots because of caused by poor channel conditions, which further...

Wireless Body Area Network (WBAN) plays an important role in e-health, sports training, and entertainment to monitor human bodies wirelessly remotely. One critical challenge for WBAN is guarantee the quality of user experience improve network performance within such a resource-constrained dynamic network. In proposed paper, we investigate cooperative radio frequency energy harvesting-based WBAN. Herein, primarily focus on improving efficiency through intelligent cooperation among nodes,...

High-valence Ni 3+ and O vacancies generated during electrochemical de-lithiation endow the cathode NCM of spent lithium-ion batteries with high OER performance.

The most common used control device on tall buildings and high-rise structures is active passive tuned mass damper (ATMD TMD). major advantages of ATMD TMD are discussed. existing installations various passive/active devices real listed. A set parameter optimization methods proposed to determine optimal parameters dampers under wind excitation. Simplified formulas for determining the so that design a can be carried out easily. Optimal wind-induced vibration frame investigated. thirty-story...

Abstract Large‐scale antenna arrays (LSAAs) are used to achieve satisfactory performance in 5G communications and radar systems. However, sidelobe suppression nulls control of LSAAs high‐dimensional nonlinear optimization problems owing the large number elements. In this study, we formulate an problem for joint large‐scale linear propose particle swarm with global search population mutation (PSOGP) solve problem. PSOGP introduces operators into conventional improve terms convergence rate...

Vehicles and roadside units can be connected by a vehicular ad hoc network (VANET), which is an important component of future intelligent transport systems that support various safety non-safety related services. The topology changes rapidly in VANET due to the high mobility vehicles, making it difficult design reliable efficient medium access control (MAC) protocol. Many MAC protocols based on time-division multiple (TDMA) have been proposed for optimize performance, but few them consider...

During the COVID-19 pandemic period, preschool teachers experienced a hard time in which they were required to implement relevant epidemic prevention policies ensure health of young children, increasing their work engagement, stress, and turnover intention. This study examined relationship between Chinese teachers' sense teaching efficacy intention based on JD-R model, with engagement stress serving as mediators during pandemic. Altogether 388 recruited surveyed online. The results indicated...

Morels (Morchella sp. pl.) are valuable mushrooms, and their applications in the pharmaceutical food industries has steadily increased China.White mold disease is a common severe culturing of morels, which mainly manifested as white villous mycelial infection on fruiting bodies these mushrooms. However, causal agent not yet known. Therefore, this study aims to identify, at species level, pathogen via morphological molecular methods then confirm its pathogenicity through Koch's postulates....

In the dual-motor torque synchronization system fed by an indirect matrix converter (IMC), a finite set model predictive control (FCS-MPC) strategy based on standard quadratic cost function was proposed to solve open-loop problem of error in traditional closed-loop strategy. Through unified modeling system, as new state variable involved switching selection inverter stages, and space vector modulation method still used rectifier stage. At same time, prediction model, auxiliary diagonal...

With the development of electronic payment systems, enterprises have increasingly higher requirements for systems. For its security, timeliness, and operability are first considerations enterprises. Especially financial companies with relatively large capital flows, safety, convenience speed systems great significance. To this end, article starts from needs designs an system that meets current in accordance principles safety reliability. This aims to provide a reference design use companies.

Cloud computing is becoming a powerful parallel data processing method, and it can be adopted by many network service providers to build framework. Although cloud able efficiently process large amount of data, attacked easily due its massively distributed cluster nodes. In this paper, we propose secure high-integrity YARN framework (SHIYF), which establishes close relationship between speculative execution the security Yet Another Resource Negotiator (YARN, MapReduce 2.0). SHIYF computes...

Power system simulation is an important tool to analysis the mechanism and characteristics of high voltage direct current (HVDC) systems. With increased transmission lines in system, calculation amount complexity increase greatly. The line commutated converter (LCC) most widely used HVDC system. average model LCC lacks commutation process can only be for steady-state analysis. switch too detail large simulation, making large. Therefore, a modeling method based on micro proposed this paper,...

In order to realize that IPv6 (Internet Protocol version 6) clients are able visit remote servers through GPRS (General Packet Radio Service), we proposed a new and feasible framework. After discussing the limitations of those existing methods which aren't suitable for network, then detailedly demonstrated framework, also gave implementations based on NetFilter Libnet as well Libipq. Simulation results show isolated areas can be efficiently connected by network presented

Abstract In this paper, according to the technical requirements of accurate characterization middle and bottom water reservoir model in numerical simulation, three means have been used solve difficult problem that puzzles technicians. The first is establish a mixture analytical bodies accurately characterize side energy at same time reduce effective grid improve operation speed model; second oil simulation long stratified injection wells. application these characteristic technologies has...