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38701
Railway overhead contact wire monitoring system by means of FBG sensors
Published 2021-07-01“…Those measurements together with periodical maintenance, contribute to minimize potential risks that the infrastructure faces. The paper aims at designing, developing, and testing a monitoring system for mechanical stresses acting on the overhead contact wire (OCW) to ensure the operational safety of the railway network. …”
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38702
Path planning algorithm for WCE with joint energy replenishment and data collection based on multi-objective optimization
Published 2018-10-01“…Considering limited energy of the wireless charging equipment (WCE) in wireless rechargeable sensor network,an energy replenishment strategy and a data collection strategy are designed.On the basis of these,a path planning model for WCE with functions of joint energy replenishment and data collection based on multi-objective optimization is constructed with two optimization objectives,maximizing the total energy utility of WCE and minimizing the average delay of data transmission of all the sensor nodes in the network.To deal with it,a multi-objective ant colony optimization algorithm based on elitist strategy was proposed,where the state transition strategy and the pheromone updating strategy were improved.Then,the Pareto set was obtained in terms of this multi-objective optimization problem.The parameter setting of ant colony algorithm’s effects on the proposed algorithm were analyzed under 20 sensor nodes.50 groups of contrastive experiments show that the average number of energy utilization obtained by ES-MOAC algorithm is 4.53% higher than that of NSGA-II algorithm.The average number of average delay of all node data transmission obtained by ES-MOAC algorithm is 5.12% lower than that of NSGA-II algorithm.…”
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38703
Analysis on the Factors Influencing the Behavior of Purchasing Enterprise Brand Fruits: Empirical Study Based on 312 Consumers in China
Published 2021-01-01“…Based on summarizing the factors that influence consumers’ purchasing of fruits and vegetables, by establishing the theoretical framework that describes the factors influencing the behavior of purchasing enterprise brand fruits, designing the questionnaire, collecting data, and analyzing the data of 312 consumers by binary logistic regression, this article finds that there are mainly 6 factors influencing the behavior of purchasing enterprise brand fruits, namely, gender, the convenience of purchase, taste, evaluation after tasting, tasted or not, and whether relatives or friends buy. …”
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38704
Influences of Ultrafine Slag Slurry Prepared by Wet Ball Milling on the Properties of Concrete
Published 2018-01-01“…The durations of grinding were 20 min, 40 min, and 60 min which were used to replace Portland cement with different percentages, namely, 20, 35, and 50, and were designed to compare cement with original slag concrete. …”
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38705
INFLUENCE OF STELL PLATE SURFACE ROUGHNESS ON COAL FREEZING ADHESIVE STRENGTH
Published 2017-01-01“…Prior studies show that surface roughness has an important effect on freezing adhesion,in order to alleviate the freezing adhesive problems of coal by improving the material’s surface shape,our research group designed the freezing adhesive strength test device,under the certain frozen condition,freezing adhesive characteristics of six different roughness steel plates with moisture content 40% of the coal slime were tested. …”
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38706
Prediction of Dynamic Compressive Strength of Hydraulic Asphalt Concrete Based on BP Neural Network and Response Surface Fitting
Published 2022-01-01“…To verify the applicability of back-propagation (BP) neural network models in predicting the compressive strength of hydraulic asphalt concrete,we designed 32 groups of cylinder specimens for uniaxial compression tests from the two dimensions of strain rate (10<sup>-5</sup> s<sup>-1</sup>~10<sup>-2</sup> s<sup>-1</sup>) and temperature (-20~30 ℃). …”
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38707
Investigation of the Law of Natural Gas Phase Behavior during the Migration and Reservoir Formation
Published 2022-01-01“…However, the existing methane solubility models are not suitable for the higher temperature and pressure range required under current geological conditions. Through a self-designed experimental equipment with high precision, the solubility of CH4 in deionized water can be measured in a wide range of temperatures (313.15-473.15 K) and pressures (5-200 MPa), and a reliable pressure-temperature-solubility segmented model is obtained by fitting. …”
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38708
Road side unit deployment optimization for the reliability of internet of vehicles based on information transmission model.
Published 2024-01-01“…Meanwhile, based on variable probabilities of crossover and mutation, a nondomination level-based NSGA-II (NNSGA-II) is designed to improve the solving efficiency. Numerical results show the advantage of the proposed model over the models evaluated with the objective of reducing transmission time can be up to 18% in different traffic scenarios, and NNSGA-II is significantly more computationally efficient.…”
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38709
Research on deep reinforcement learning in Internet of vehicles edge computing based on Quasi-Newton method
Published 2024-05-01“…To address the issues of ineffective task offloading decisions caused by multitasking and resource constraints in vehicular networks, the Quasi-Newton method deep reinforcement learning dual-phase online offloading (QNRLO) algorithm was proposed. The algorithm was designed by initially incorporating batch normalization techniques to optimize the training process of deep neural networks. …”
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38710
Digital Storytelling: Boosting Literacy Practices in Students at A1-Level
Published 2020-01-01“…Finally, negotiation in the group roles, as writer, designer and media creator, played an important role when working in groups. …”
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38711
Parasite in the brain: the role of Toxoplasma gondii in brain cancer and neuropsychiatric disorders
Published 2024-12-01“…Grasping these connections is essential for creating focused therapeutic approaches and public health measures designed to reduce the impact of T. gondii infection on mental health and neuro-oncology. …”
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38712
Audiovisual Work as a Complex Object of Copyright
Published 2023-09-01“…On the basis of this doctrine, the Russian legislator identifies four authors of an audiovisual work whose creative contribution is the most significant: a production director, a script writer, a composer who created a musical work specifically for an audiovisual work, and a production designer. It is proved that the closed list of authors of an audiovisual work is a characteristic feature of European legal systems that are part of the Romano–Germanic legal family. …”
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38713
Edge computing privacy protection method based on blockchain and federated learning
Published 2021-11-01“…Aiming at the needs of edge computing for data privacy, the correctness of calculation results and the auditability of data processing, a privacy protection method for edge computing based on blockchain and federated learning was proposed, which can realize collaborative training with multiple devices at the edge of the network without a trusted environment and special hardware facilities.The blockchain was used to endow the edge computing with features such as tamper-proof and resistance to single-point-of-failure attacks, and the gradient verification and incentive mechanism were incorporated into the consensus protocol to encourage more local devices to honestly contribute computing power and data to the federated learning.For the potential privacy leakage problems caused by sharing model parameters, an adaptive differential privacy mechanism was designed to protect parameter privacy while reducing the impact of noise on the model accuracy, and moments accountant was used to accurately track the privacy loss during the training process.Experimental results show that the proposed method can resist 30% of poisoning attacks, and can achieve privacy protection with high model accuracy, and is suitable for edge computing scenarios that require high level of security and accuracy.…”
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38714
APPLICATION OF THE ZOO/PLANKTON INDICATORS FOR ASSESSMENT OF THE NUCLEAR POWER PLANTS IMPACT UPON COOLING POOLS
Published 2020-10-01“…The Neman River (the Baltic Nuclear Power Plant designed receiver for waste waters) in the period of the research was not affected by the nuclear plant impact. …”
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38715
Robust Optimal Sliding-Mode Tracking Control for a Class of Uncertain Nonlinear MIMO Systems
Published 2013-01-01“…A LQR tracking controller (LQRTC) is designed for the corresponding nominal system, and the integral sliding-mode strategy is used to robustify the LQRTC. …”
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38716
Possible Immunosuppressive Effects of Drug Exposure and Environmental and Nutritional Effects on Infection and Vaccination
Published 2015-01-01“…Additional substances of environmental, nutritional, or microbiological origin may also play a role but their combinatory/synergistic effects have been disregarded so far due to the lack of systematic data and the complex study designs necessary to elucidate those complex epidemiologic questions.…”
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38717
Méditations sur le « Paradoxe Pulp » : Pal, la Paramount et les pulps de SF
Published 2023-12-01“…In this period Astounding published a series of articles sponsored by Pal and Paramount designed to help market a group of films: Destination Moon (1950), When Worlds Collide (1951), The War of the Worlds (1953), and Conquest of Space (1955). …”
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38718
RESEARCH ON MILLING OF WEAK STIFFNESS PARTS BASED ON MAGNETORHEOLOGICAL FLUID AUXILIARY SUPPORT
Published 2022-01-01“…According to the characteristics of the magnetorheological fluid, in this thesis, there are designs of a set of adaptive, flexible auxiliary supporting device units, which can be used to develop the processing accuracy of complex curved parts with weak rigidity. …”
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38719
Research on Torsional Fatigue Test Method of Electric Vehicle Differential based on Actual Driving Load
Published 2021-01-01“…According to the actual torsion load of electric vehicle differential, a torsion fatigue test system of electric vehicle differential based on hydraulic servo is designed. A wireless telemetry system is used to collect the axle shaft torque of electric vehicle in Dianjiang test site according to Pascal test specification. …”
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38720
Machine Learning Based Engagement Prediction for Online Courses
Published 2025-01-01“…This helps educators and course designers to develop strategies to improve engagement and retention. …”
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