Manganese-based oxides have been proven to be promising materials for applications in high voltage and energy density Li-ion batteries. In this work, by using hydrothermally synthesized β-MnO2 nanorods as the templates, we prepared single-crystalline CoMn2O4 nano/submicrorods with diameters of about 100 nm lengths up tens micrometers. The electrochemical tests showed that products a reversible capacity 512 mA h g−1 at current 200 coulombic efficiency 98% after cycles. A specific 400 was...

Thermally evaporated Se, including the molecules of Se 2 , 5 6 7 and 8 in vapor at 550–600 °C, is widely used for selenization CZTSSe films. However, active small‐molecule tends to form large clusters atoms saturation pressure, resulting deficiency poor crystallization To regulate time reach pressure promote role evaporation area controlled. Then corresponding grain growth mechanism films device efficiency are systematically investigated. The results demonstrate that appropriate can not only...

The development of geothermal resources gives rise to temperature variations in the surrounding groundwater flow. This study employed numerical simulation methods. aim was investigate distribution fields at different heights and time intervals within flowing water, as well flow under influencing factors. findings this revealed that outflow water influenced by cold section impact a gradient. As velocity increases, influence became weaker. In addition, distance warm inversely proportional...

This paper constructs a spatiotemporal feature fusion network (STNet) to enhance the influence of features signals on diagnostic performance during motor fault diagnosis. The STNet consists spatial processing capability convolutional neural networks (CNN) and temporal recurrent (RNN). It is used for diagnosis vibration signals. uses dual-stream branching extract by gated unit (GRU) simultaneously. are also enhanced using attention mechanism. Then, fused input into softmax function...

Named Data Networking (NDN) is a general purpose network layer protocol which offers set of rich functionality: caching, multi-path forwarding, multicast delivery, and data-centric security. Above the layer, system libraries simplify application developers' tasks by providing an easy to use yet powerful API utilize functions enabled NDN. This paper presents design Consumer / Producer programming interface, together with several mechanisms, that supports level framing via NDN's data retrieval...

CAPTCHA is a test that can tell humans and computer programs apart automatically. The aim to allow the server identify visitor human or computer, only provide services human. It improve current system user information security. static plane visual based on OCR problems with advantages of implementation operation <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1]</sup> become mainstream technology application form. However, variety targeted text...

One of the main objectives watermarking is to achieve a better tradeoff between robustness and high visual quality host image. In recent years, there has been significant development in gray‐level image using fractal‐based method. This paper presents human system (HVS) based fractal method for color images. proposed method, pixel considered as 3‐D vector RGB space. And general form 3 × matrix utilized scaling operator. Meanwhile, luminance offset substituted by range block mean vector. Then...

Information sharing among a group of friends or colleagues in real life is usually distributed process: we tell each other interesting important news without any mandatory assistance approval from third party. Surprisingly, this not what happens when files over the Internet. While goal file to disseminate multiple parties, due constraints imposed by IP's point-to-point communication model, most today's applications, such as Drop box, Google Drive, etc., resort centralized design paradigm:...

This paper proposes a novel asymmetrical permanent magnet assisted synchronous reluctance machine (APMA-SynRM) with high cost performance, namely it has the advantages of torque performance and low cost. an rotor configuration featured by low-cost ferrite expensive NdFeB, two kinds material are placed asymmetrically on both sides "U"-shaped barriers, which causes magnet-axis-shift (MAS) effect. Consequently, proposed APMA-SynRM improves utilization torque. The influences volume ratio hybrid...

This paper considers the stability and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mi>H</mml:mi></mml:mrow><mml:mrow><mml:mi>∞</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>control problem of networked control systems with time delay. Taking into account influence network delay, unknown input disturbance, and uncertainties system modeling, meanwhile we establish a precise, closed-loop model for By selecting proper...

To plan the work of power generation equipment, it is necessary to ensure that supply sufficient and achieve minimum cost safety economy microgrid. Based on back propagation neural network–local mean decomposition–long short-term memory (BPNN–LMD–LSTM) load prediction, design based a fixed-time consistency algorithm with random delay predict economic dispatch microgrids. Firstly, initial prediction sequence obtained by continuous training network (BPNN); residual other influencing factors...

Due to the difficulty in dealing with non-stationary and nonlinear vibration signals using single decomposition method, it is difficult extract weak fault features from complex noise; therefore, this paper proposes a feature extraction method for rolling bearings based on complete ensemble empirical mode adaptive noise (CEEMDAN) variational (VMD) methods. CEEMDAN was used decompose signal, signal then screened reconstructed according component envelope kurtosis. Based kurtosis of maximum...

The orithogonal subspace projection (OSP) method needs all the endmember spectral information of observation area which is usually unavailable in actual situation. In order to extend application OSP method, this paper proposes an algorithm without any priori based on OSP. Firstly, background matrix obtained by using unsupervised method. Then, operator calculated with matrix. Finally, detection constructed operator, used detect hyperspectral imagery pixel pixel. increase rate, local...

By using a data-driven communication pattern other than location-driven pattern, Named Data Networking (NDN) offers better support for content distribution applications such as video playback application. We propose NDNlive, which exploits the features of NDN to stream live and prerecorded captured by camera multiple players. Instead fixed-size segmentation, NDNlive chops into frames are Application Units (ADU)-units information represented in most suitable form. adopts different data...

This paper investigates the event-triggered fault diagnosis (FD) problem for interval type-2 (IT2) Takagi–Sugeno (T-S) fuzzy networked systems. Firstly, an FD filter is proposed by using IT2 T-S theory to generate a residual signal. means that premise variable needs not be identical nonlinear systems (NNSs). The evaluation functions are referenced determine occurrence of system faults. Secondly, under mechanism, (FRS) established with parameter uncertainty, external disturbance and time...

With the advances of studies on multi-piezoelectric effect, it has become possible to integrate structure and function sensor with actuators into single piezoelectric element. This paper analyzes simulates integrated sensor-actuators by using 3-D finite element model which models is quartz ceramic sheet PZT-5 in beginning positive effect; results are proved that functions sensors can be crystal based effect.