Abstract Lithium–sulfur batteries (LSBs) have been regarded as one of the promising candidates for next‐generation “lithium‐ion battery beyond” owing to their high energy density and due low cost sulfur. However, main obstacles encountered in commercial implementation LSBs are notorious shuttle effect, retarded sulfur redox kinetics, uncontrolled dendrite growth. Accordingly, single‐atom catalysts (SACs), which ultrahigh catalytic efficiency, tunable coordination configuration, light weight,...

Using intelligent reflecting surfaces (IRSs) is a promising approach to enhance the performance of wireless communication systems. In this letter, placement optimization multi-IRSs investigated in multi-IRS-aided systems, with aim minimizing number IRSs subject average achievable data rate. Then, an adaptive differential evolution algorithm developed jointly optimize number, locations, and phase shift coefficients IRSs, which novel strategy devised adaptively select mutation operator for...

Plasmonic Ag-decorated Cu 2 O nanowires for efficient photoelectrochemical CO reduction to multi-carbon product acetic acid in an aqueous electrolyte.

Wireless-based federated learning (FL), as an emerging distributed approach, has been widely studied for 6G systems. When the paradigm shifts from terrestrial to non-terrestrial networks (NTN), FL may need address several open challenges, e.g., limited service time of low earth orbit (LEO) satellites, straggler issue in synchronous FL, and time-efficient uploading aggregation massive devices. In this work, we exploit synergy LEO future integrated 6G-satellite systems by taking advantage...

This paper proposes a high-precision filtering scheme for standard bottle calibration pressure based on Transformer model feature extraction and Kalman methods, which is used to analyze the data of over time. Firstly, employed as extractor transform sequence time into high-dimensional vectors, thereby capturing rich semantic information input data. Then, filter designed, using vectors extracted by observation values, combined with state transition equations estimate these vectors. By...

ABSTRACT CaO/CaCO 3 thermochemical energy storage, also known as calcium looping (CaL), has promising applications in high‐temperature concentrating solar power (CSP) plants due to their wide range of material source, low price, high storage density, and suitable reaction temperature. However, calcium‐based materials are gradually deactivated sintering agglomeration, which reduce the cyclic stability materials. In this paper, composites containing Al Mn elements were prepared by a template...

In large-scale wireless sensor networks (WSNs), when the consumption of hardware is limited, how to maximize performance has become research focus for improving transmission quality service (QoS) WSNs in recent years. This paper presents a new evaluation method packet buffer capacity nodes using queueing network model, whose analyzed each type node, it best working condition. order evaluate congestion situation network, and get real effective arrival rates holding were added equivalent model...

Underwater acoustic sensor networks (UASNs) provide new opportunities for exploring oceans and consequently improving our understanding of the underwater world. UASNs usually rely on hardware infrastructure with poor flexibility versatility. Compared wireless networks, are quite expensive to manufacture deploy. Due unique data format, protocols, service constraints various applications, typically deployed in a redundant manner, which not only leads waste but also causes serious interference...

This paper proposes a localization algorithm based on an L-shaped array for estimating the two-dimensional (2-D) directions-of-arrival (DOAs) of incoherently distributed (ID) sources in underdetermined case. To begin with, generalized manifold (GAM) model is established first-order Taylor series approximation. The raw received data split into frames that be processed through delay cross-correlation operation to construct virtual data. Then, covariance matrix calculated, followed by...

Abstract Background Promoter region plays an important role in determining where the transcription of a particular gene should be initiated. Computational prediction eukaryotic Pol II promoter sequences is one most significant problems sequence analysis. Existing methods are still far from being satisfactory. Results We attempt to recognize human non-promoter which made up exon and intron sequences. Four used: two kinds multifractal analysis performed on numeric obtained dinucleotide free...

This paper studies a bandwidth-limited federated learning (FL) system where the access point is central server for aggregation and energy-constrained user equipemnts (UEs) with limited computation capabilities (e.g., Internet of Things devices) perform local training. Limited by bandwidth in wireless edge systems, only part UEs can participate each FL training round. Selecting different could affect performance, selected need to allocate their computing resource effectively. In...

Underwater acoustic sensor networks (UASNs) are important technical means to explore the ocean realm. Clustering is a crucial strategy which determines performance and lifetime of UASNs significantly. As technological innovation, software defined networking (SDN) separates data plane from control build programmable network infrastructure. This paper presents clustering mechanism based on SDN. Firstly, we introduce architecture software-defined UASN named SD-UASN. Secondly, investigate...

SUMMARY Localization based on received signal strength indication (RSSI) is a low cost and complexity technology, it widely applied in distance‐based localization of wireless sensor networks. The error existing technologies significant. This paper presents the N ‐times trilateral centroid weighted algorithm, which can reduce considerably. Considering instability RSSI, we use average many RSSIs as current RSSI. To improve accuracy, select number (no less than three) reliable beacon nodes to...

Purpose: A control algorithm for radio-frequency-induced intestinal tissue fusion was developed to explore the effects of different parameters on fusion.Materials and methods: Radio-frequency-induced performed ex vivo small intestine tissue. The effect observed by changing (power, interval time, terminal impedance) in algorithm. quality evaluated using burst pressure thermal damage measurement. Histological evaluation used assess indirectly.Results: maximum 8.460 ± 0.2674 KPa acquired when...

Lexical Substitution discovers appropriate substitutes for a given target word in context sentence. However, the task fails to consider that are of equal or higher proficiency than target, an aspect could be beneficial language learners looking improve their writing. To bridge this gap, we propose new task, proficiency-oriented lexical substitution. We also introduce ProLex, novel benchmark designed assess systems' ability generate not only but demonstrate better proficiency. Besides...

The present study investigates the relationship between bio-impedance and burst pressure of colorectal anastomosis created by radiofrequency (RF)-induced tissue fusion.Colorectal were with ex-vivo porcine segments, during which 5 levels compression applied a custom-made bipolar prototype, replicate experiments at each pressure.Instant anastomotic tensile strength was assessed pressure.Bio-impedance fused measured Impedance Analyzer across frequency that 100Hz to 3MHz.Statistical analysis...

A Fourier transform method is proposed to distinguish coding and non-coding sequences in a complete genome based on number sequence representation of the DNA our previous paper (Zhou et ah, J. Theor. Biol. 2005) imperfect periodicity 3 protein sequences. The three parameters P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x(s</sub> xmlns:xlink="http://www.w3.org/1999/xlink">macr)</sub> (1), (1/3) (1/36) are selected form three-dimensional...