内啮合齿轮泵隔离装置的平衡 by 郭善新, 余广炽, 关翔锋

“…In order to achieve a higher volumetric efficiency of an internal gear pump at higher pressures,a new isolation device with a compensating function in the diameter direction was developed.The device used a technical method of expanding high pressure chamber inside the pump.In order to obtain a better balance for the isolation device,according to the pressure distribution law of the transition zone,the calculation formulas of hydraulic pressure,the compensation force and the supporting force of the crescent block in the transition zone of the crescent block were derived,and then the equilibrium constraints of the device were established.The transition zone was enlarged until only two gear teeth.As an example,the fmincon tool was used to obtain the optimum center angle of the compensation cavity,and the force changes curve was obtained by MATLAB simulation.When an internal gear pump with a theoretical displacement of 50.8 ml/r was carried out under the condition of input pressure of 0.3 MPa,output pressure of 21.8 MPa,at 50℃ ±4℃,and the results show that the volumetric efficiency can reachs 94.3%.No abnormal wear was observed.…”
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Model of Automatic Classification and Localization of Images by L. V. Serebryanaya, K. Y. Bochkarev, A. Y. Popitich

“…Objects are localized in the image at the final stage of operations of the convolutional neural network. For this, the output values of the penultimate layer of the model are analyzed, after which the layers are traversed in the reverse order. …”
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Post-Processing Thermal Activation of Thermoelectric Materials Based on Germanium by Piotr Marek Markowski, Eugeniusz Prociów

“…Post-processing annealing reorders the structure and increases the output parameters. Thin films of germanium doped with gold (Ge:Au) and vanadium (Ge:V) were magnetron-sputtered on glass substrates. …”
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Finding projection in the two-stage supply chain in DEA-R with random data using (CRA) model by Mohammad Reza Mozaffari, Sahar Ostovan

“…But since the input and output vectors of each DMU in the DEA are crucial, they may be random data that follow a particular distribution. …”
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Dividend policies and managerial ability beyond financial constraints: insights from China by Dan Hou, Ziyan Yuan, Alina Taran-Bozbay, R. M. Ammar Zahid

“…This study builds on the contradictory literature arguments related to dividend policies and analyses the influence of managerial ability and financial constraints on cash dividends, considering a comprehensive perspective of dividends expressed as both accounting and market measures of payout, yield, and growth in the context of the Chinese financial market. …”
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Cause and Elimination Mechanism of Circularly Shift Range for the Multi-range Hydro-mechanical CVT by Yin Yuxin, Zhang Mingzhu, Hao Xiaoyang, Wang Tingting, Cui Mingming

“…To avoid the circularly shift range on multi-range hydro-mechanical continuously variable transmission（HMCVT）,taking the multi-range hydro-mechanical CVT of the wheel tractor of YTO-400 as example,the transmission characteristic of multi-range hydro-mechanical CVT is analyzed.The causes of the circularly shift range are researched,and eliminating mechanism is presented.The effectiveness of principle of averting the circularly shift range is simulated by using the theory of Finite State Machine,which employs the actual and theoretical displacement ratio,output speeds of multi-range hydro-mechanical CVT as the control parameter.The research results indicate that,the volumetric efficiency of the pump-motor system is the important reason for the factor of efficiency difference of the circularly shift range.By controlling the increase of the theory displacement ratio of the multi-range hydro-mechanical CVT,the actual displacement ratio is maintained at the same time,which effectively avoids the cycle change of the multi-range hydro-mechanical CVT.A theoretical foundation for the development of multi-range hydro-mechanical CVT control system is provided.…”
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Joint DOA and DOD Estimation in Bistatic MIMO Radar without Estimating the Number of Targets by Zaifang Xi, Xiao-feng Wu, Shuyue Wu, Zhijun Tang, Shigang Hu

“…Existing subspace-based direction finding methods for multiple-input multiple-output (MIMO) radar assume perfect knowledge about the dimension of the signal or noise subspace, which is hard to be established without prior knowledge of the signal environment. …”
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The Inverse Problem of Identification of Hydrogen Permeability Model by Yury V. Zaika, Natalia I. Rodchenkova, Ekaterina K. Kostikova

“…A numerical method is developed for TDS spectrum simulation, where only integration of a nonlinear system of low order ordinary differential equations is required. The main final output of the article is a noise-resistant algorithm for solving the inverse problem of parametric identification for the aggregated experiment where desorption and diffusion are dynamically interrelated (without the artificial division of studies into the diffusion limited regime (DLR) and the surface limited regime (SLR)).…”
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Research status and prospect of MIMO OTA test methods for 5G terminals by Nan MA, Fei YU, Xiaoli YANG, Xiaodong XU, Zhi ZHANG

“…MIMO (multi-input multi-output) OTA (over-the-air) testing is an important method to evaluate the radiation performance of the antenna system, as well as an indispensable step of research ＆ development (R ＆D) and mass production stages.With the advent of the 5G mobile communication system, the introduction of millimeter wave (mmWave) and other new technologies brings new challenges to the traditional MIMO OTA test method, and meanwhile makes OTA testing the only feasible solution for testing future 5G devices.Firstly, the challenges faced by 5G OTA testing was described.Then the applicability of the 4G mobile communication system OTA test method to the 5G OTA performance test was analyzed, and how to extend the low-frequency test method to the mmWave terminal test was studied.Then the current status of 3GPP’s research on MIMO OTA testing was summarized, and the system model, test principle, and performance evaluation indexes of simple-sectored multi-probe anechoic chamber (SS-MPAC) were explained in detail.In addition, smaller setup sizes can still yield reasonable measurement accuracy was verified.Finally, future research trends were prospected.…”
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Fully Canonical Triple-Mode Filter with Source-Load Coupling for 5G Systems by Cristóbal López-Montes, José R. Montejo-Garai

“…Given that this topology needs a source–load coupling level that is not possible to achieve with the classical iris ports, coaxial probes are used as input–output ports. A systematic procedure is developed to obtain the initial geometry before the full-wave optimization. …”
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Studies on Pumice Lightweight Aggregate Concrete with Quarry Dust Using Mathematical Modeling Aid of ACO Techniques by J. Rex, B. Kameshwari

“…The proposed mathematical modeling is utilized to predict four output parameters such as compressive strength (Mpa), split tensile strength (Mpa), flexural strength (Mpa), and deflection (in mm). …”
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Noise Performance of Heterojunction DDR MITATT Devices Based on at W-Band by Suranjana Banerjee, Aritra Acharyya, J. P. Banerjee

“…The results show that the -Si heterojunction DDR structure of MITATT device excels all other structures as regards noise spectral density ( sec) and noise measure (33.09 dB) as well as millimeter-wave properties such as DC-to-RF conversion efficiency (20.15%) and CW power output (773.29 mW).…”
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Rigid Flexible Coupling Dynamics Research of the Flap Transmission Mechanism with Clearance Joints by Zhang Tao, Liu Geng, Ma Shangjun

“…In order to study the dynamic characteristics of flap transmission mechanism with clearance joints, based on an improved nonlinear normal impact force model with variable stiffness, and the elastic factor of connecting rod, the angular velocity and angular acceleration of the steering gear are simulated and analyzed with the conditions of different clearance joints （<italic>c</italic>=0、<italic>c</italic>=<italic>δ</italic> and <italic>c</italic>=1.6<italic>δ</italic>） , and different friction parameters （0.06、0.08 and 0.1）. The dynamic output angular velocity and angular acceleration of the flap transmission exhibit obvious oscillation, and the amplitude of the angular acceleration is larger than that of the angular velocity oscillation; at the same time, when the driving load changes, the angular velocity and angular acceleration fluctuate greatly, but the fluctuation degree in the case of<italic> c</italic>=0 is greater than that with clearance; in addition, the higher the friction coefficient at the clearance joint is, the greater the amplitude of angular velocity and angular acceleration oscillation are, accompanied by high-frequency oscillation and delay phenomenon.…”
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Research of Regenerative Braking Test Rig of Flywheel Energy Storage for Vehicular Application by Li Hongliang, Zhang Xinbin, Chu Jiangwei

“…Three operation modes consist of brake energy recovery mode,storage energy output mode,recovery energy hold mode of flywheel energy storage device during vehicle operation process are presented. …”
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Intelligent temperature detection system based on“5G+AI” by Shan JIANG, Guocheng GONG, Tengyuan MA, Long XIAO

“…An intelligent temperature measurement solution based on “5G+AI” for the prevention and control of epidemic situation in COVID-19 was presented.Intelligent temperature measurement has a wide range of application scenarios in areas with dense traffic such as airports, railway stations and stations.A new AI temperature measurement architecture was proposed.The camera and infrared thermometer was used to measure temperature.The preprocessing module included image decoding, color space transformation, image correction and image normalization.Head detection model need to undergo off-line model training.Finally, through the temperature calculation module, the structured information was output.The development process of the model included data collection and annotation, model construction, model training, model optimization and model deployment.A comprehensive intelligent temperature measurement system was constructed, which integrated 5G temperature measurement hardware, OneNET access platform, monitoring application platform and mobile App.Finally, “5G+AI” intelligent temperature measurement products were successfully deployed in many cities and different application scenarios across the country.…”
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Drivability Improvement Control for Vehicle Start-Up Applied to an Automated Manual Transmission by Danna Jiang, Ying Huang, Zhe Zuo, Huan Li

“…Based on a piecewise model of powertrain, a multiple-model predictive controller (mMPC) is designed with the engine speed, clutch disc speed, and wheel speed as the measurable input variables and the engine torque reference and clutch friction torque reference as the controller’s output variables. The model not only includes the clutch dynamic, the flexible shaft dynamic, but also includes the actuators’ delay character. …”
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Sensual Environmental Robots: Entanglements of Speculative Realist Ideas with Design Theory and Practice by Santer Steven C.

“…Thereby, allowing ontological design implications to be reviewed – where acts of designing in turn design us; design processes are not only entwined prefiguratively, but are companion output artefacts of these technological ecology interfaces. …”
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Design of a Low Sidelobe Feed Network Based on the Louver-Shaped Defected Ground Structure by Yuan Zhang, Songtao Xi

“…By adjusting the louver-shaped DGS, the output amplitude and phase of the corresponding ports can be altered, minimizing deviations from theoretical values. …”
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Gouvernance et environnement : engagement politique, social et économique pour le présent et pour la société de demain by Bernard Bigras

“…Pour ce faire, ces changements structurels doivent s’articuler autour de quatre grands axes : méthodologique, politique, institutionnel et culturel, afin de tendre vers une démocratie cognitive.…”
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Brugada Syndrome Caused by Autonomic Dysfunction in Multiple Sclerosis by Michel Ibrahim, Garly Saint-Croix, Rosario Colombo

“…While mechanistically different, the type 1 Brugada pattern presents similarly with syncope due to an insufficient cardiac output during dysrhythmia. In such patients, intracardiac defibrillators have shown to prevent sudden cardiac death in patients with the Brugada syndrome. …”
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