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11461
Calculation of the Overall Coordination Internal Force of the Grille Beam-Column under the Impact of Debris Flow
Published 2022-01-01“…Therefore, from the perspective of safety, the overall coordination cannot be ignored when designing a blocking dam.…”
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11462
Kinematics Analysis of the Circuit Board Gripper Mechanism
Published 2022-12-01“…Designing an excellent end effector is effective to improve a robot's performance. …”
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11463
Dynamics Modeling and Trajectory Tracking Control of the Mine Rescue Robot with a Variable Structure
Published 2024-10-01“…A mine rescue robot with variable structure was designed for drilling rescue needs. The robot can change its configuration and enter the downhole environment through drilling. …”
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11464
Analysis of Seepage Control Effect of Gate Foundation Cut-off Wall Based on Finite Element Method
Published 2020-01-01“…The analysisresults can provide reference for the design of seepage control measures for gate foundation andthe selection of seepage control measures for similar gate foundation.…”
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11465
Shoulder Optimization and Motion Simulation of a 7-DOF Exoskeleton Upper Limb Rehabilitation Robot
Published 2024-05-01“…A 7-DOF exoskeleton upper-limb rehabilitation robot is designed for the needs of rehabilitation training ability enhancement of arm movement disorders. …”
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11466
Usage of Learning Management System Web Analytics in Blended Learning Self-Study Evaluation
Published 2020-09-01“…Designed methodology uses algorithms that evaluate self-study results by using empirical LMS analytics data. …”
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11467
FPGA-Jetson based hardware real-time co-simulation for smart grid
Published 2021-12-01“…Smart grid is a power-communication coupled cyber-physical power system (CPPS), where the two-domain coupling features make the real-time simulation difficult.Different from the existing software-based co-simulation methods, a FPGA-Jetson based real-time co-simulation platform for smart grid by leveraging the FPGA’'s programmable computation capability and Jetson’s real-time operating system was designed.The power system simulation was carried out on the FPGA board, the information communication system simulation was completed on Jetson platform, and the two-domain information interaction was simulated through the PCIe channel.By making full use of the computing and data transmission capabilities of each module, the real-time simulation of the combination of power grid and communication network was realized.Finally, the corresponding specific modeling and parameters were designed for the two representative smart grid scenarios: hybrid AC-DC transmission network and micro-grid, the validity and scalability of the proposed real-time co-simulation architecture were verified.…”
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11468
LSKE: Lightweight Secure Key Exchange Scheme in Fog Federation
Published 2021-01-01“…The results show that the proposed design reduced 3.2457 ms of computational overhead and 1,024 transmitted data bits.…”
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11469
Throughput Capacity of Opportunistic Routing in Wireless Sensor Networks
Published 2010-06-01“…Simulation results demonstrate that the OR design derived from our analysis model often yields noticeably better throughput than traditional unicast routing protocols and the OR design derived from existing analysis model under a range of scenarios.…”
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11470
Secondary throughput maximization scheme for non-linear energy harvesting cognitive radio networks
Published 2023-02-01“…Aiming at a cognitive radio network (CRN) consisting of a pair of primary users and M pairs of secondary users, the secondary throughput maximization for CRN based on the non-linear energy harvesting model was studied.Specifically, in the case of considering secondary transmitter (ST) circuit power, the secondary throughput maximization (STM) problem with primary users’ throughput demands was first modeled as a non-linear optimization problem and then transformed into a convex optimization problem.Finally, a low-complexity algorithm combining the golden section and dichotomy was proposed.By applying this low-complexity algorithm, the optimal time allocation of the primary transmitter (PT)’s energy transmission and secondary users’ information transmission, and the optimal transmission power of PT were obtained.In addition, for the case of neglecting the ST circuit power, the convex property of the STM problem was first proved, and then a more efficient algorithm was designed to solve it.The simulation results show that compared with the equal time allocation method and the link gain priority method, the proposed design algorithm significantly improves the throughput of secondary users.…”
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11471
Application and Research of Three-Row Pile Retaining Structure in Key Project of Drainage Pumping Station
Published 2022-01-01“…Most of the wing walls at the connection section of forebays in key projects of drainage pumping stations are generally designed as cantilevers,buttresses,or box-type retaining wall structures and are equipped with temporary diversion and supporting measures,which thus require high project investment and long construction period.This paper took the Yaquewei water conservancy project as an example and optimized the scheme of wing walls between the pump station and the sluice at the connection section of the forebay of a large-scale drainage pumping station.After comparison and selection,it was recommended to adopt a three-row pile retaining structure,which is less used in water conservancy projects.The optimized scheme saves the project investment and shortens the construction period.At the same time,three-dimensional finite element numerical simulation technology and other means were used to compare the calculation results with the measured engineering data,so as to demonstrate the technical feasibility of the scheme and summarize the design experience.…”
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11472
Ludwig: A Training Simulator of the Safety Operation of a CANDU Reactor
Published 2011-01-01“…This paper presents the application Ludwig designed to train operators of a CANDU Nuclear Power Plant (NPP) by means of a computer control panel that simulates the response of the evolution of the physical variables of the plant under normal transients. …”
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11473
Node Selection Algorithms with Data Accuracy Guarantee in Service-Oriented Wireless Sensor Networks
Published 2013-04-01“…Secondarily, we have proposed two heuristic algorithms, namely, Separate Selection Algorithm (SSA) and Combined Selection Algorithm (CSA). The SSA is designed to select nodes for each service in a separate way, and the CSA is designed to select nodes according to their contribution increment. …”
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11474
Fast link-establishment method of integrated of communication and detection based on short-wave digital channelization
Published 2023-01-01“…A link-establishment method based on short-wave digital channelized receiver was proposed for the traditional automatic link establishment technology in short-wave communications with the low accuracy of frequency selection, low efficiency of link establishment, and low utilization of resources, etc.The parallel receiving mechanism for full frequency band in short-wave communications was realized by using digital channelization.An integrated waveform of communication and detection was designed to deal with the time redundancy and equipment compatibility problems caused by waveform switching during link establishment.A fast link-establishment method was designed, to achieve a fast and robust connection in complex electromagnetic environments.The results show that the channelized structure can enhance the receiving performance of the link-establishment system, the link-establishment method has obvious advantages, channel parameter estimation method has a high estimation accuracy compared to the traditional link-establishment method and the applicability of the proposed method in practical short-wave channel environment is verified.…”
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11475
Analysis of Planetary Gear Fatigue Strength of Wind Turbine Under Weibull Distribution Random Load
Published 2020-09-01“…Based on Minner's linear cumulative damage theory and nCodeDesignLife, fatigue life is estimated. The fatigue life of the planetary gear train corresponding to the starting wind speed, the rated wind speed and the average annual wind speed of the wind turbine is emphatically analyzed, and the fatigue damage of each gear is obtained, which provided a theoretical basis for the design of the planetary gear train fatigue strength of the wind turbine.…”
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11476
Empresários e intelectuais: agentes culturais e valorização de um grupo étnico
Published 2014-01-01“…The paper highlights a specific process of association of economic and intellectual capital, articulated though strategies of interest groups designed to legitimate and recognize a field of knowledge, as well as through actions designed to value and promote the local culture. …”
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11477
Integrated communication and positioning system enabled by fusing visible light and RF
Published 2023-12-01“…Aiming at the problem that in the hybrid visible light and RF network, such as the traditional user switching scheme leveraging received signal strength and ignoring the user switching error rate, a location-based user switching scheme was proposed.Specifically, an integrated communication and positioning system built upon low-cost IoT chip ESP32 was designed, which could fuse both visible light communication downlink and Wi-Fi uplink signals for accurate user location.A communication and positioning integration framework utilizing time-frequency multiplexing was designed, which used a neural network to estimate the user’s position, and the user completed the switching based on the estimated position.In terms of communication, the throughput of the system can reach up to 35 kbit/s.In terms of positioning, the positioning accuracy of the system can reach 2.8 cm, making a 33% improvement over traditional system.Compared with the switching scheme relying on received signal strength, user switching error rate of the proposed scheme is reduced by 4%.…”
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11478
Analysis of Optimal RAP Content Based on Discrete Element Method
Published 2022-01-01“…The results of this study provide a reference for the mixture design of recycled asphalt mixture.…”
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11479
Application of New Structure on Power House with Large Variable Tailwater in Karst Area
Published 2020-01-01“…The power house behind Jiayan dam in Guizhou Province is located in Karst area.Affectedby the backwater effect of underground river, the tailwater head of power plant reaches 44.92 m,and the retaining height is equivalent to a gravity dam in medium height, which brings greatdifficulties to the layout and structural design of power house. By innovating the structure typeof power house and adopting the three-dimensional layered structure of main and auxiliary powerhouses, this paper successfully solves the problems of structure design, access traffic and floodcontrol safety of high tailwater power house in Jiayan project. …”
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11480
Determination of optimal conditions for pressure oxidative leaching of Sarcheshmeh Molybdenite concentrate using Taguchi method
Published 2012-01-01“…The experiments were designed and carried out in a high-pressure reactor in the presence of nitric acid as solvent and oxidizing agent for the molybdenite concentrate and its ReS2 content. …”
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