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20881
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20882
Broadband Multilayered Array Antenna with EBG Reflector
Published 2013-01-01“…Most broadband microstrip antennae are implemented in the form of slot structure or laminate structure. The impedance bandwidth is broadened, but meanwhile, the sidelobe of the directivity pattern and backlobe level are enlarged. …”
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20883
OPTIMIZATION METHOD OF DYNAMIC LOAD IDENTIFICATION BASED ON GENETIC ALGORITHM
Published 2015-01-01“…Based on the response sensitivity analysis on the identification of structural dynamic load,structural dynamic load was expressed as a series of parameters. …”
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20884
Design of the Gear Generating Instrument on the type of Duplicate Planetary Transmission
Published 2015-01-01“…The structure and function of the existing gear generating instrument are analyzed,its drawbacks and deficiencies of the structure and using are pointed out.The traditional structure mode of gear generating instrument is abandoned,and a new type of duplicate planetary transmission of involute gear generating instrument is designed,and then the structure,parameters,principle and characteristics are introduced.The duplicate planetary transmission of involute gear generating instrument is more convenient and quicker for operating by contrast of using the old and new gear generating instrument,and it can completely replace the existing gear generating instrument.…”
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20885
Analysis of Shielding Effectiveness of the Cavity Built with Single-Layer Reinforced Concrete
Published 2022-01-01“…In view of the existing literature mainly studying the situation of infinite reinforced concrete structure, the shielding effectiveness of three-dimensional single-layer reinforced concrete cavity is studied by considering the structural parameters of steel and the electromagnetic parameters of the concrete. …”
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20886
Synthesis of doped Co based perovskite and photocatalytic degradation of organic wastewater
Published 2024-12-01“…XPS, ERP and infrared tests before and after the reaction showed that the oxygen vacancy defect in the material structure could promote the collapse of the quinone structure in the red structure of the material, and further improved the photocatalytic degradation performance. …”
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20887
Localization Improvement Design of the E3KFC Cone-cylindrical Gear Reducer
Published 2015-01-01“…The analysis of advantages and disadvantages of the design and structure of foreign E3 KFC gear reducer is carried out,the improvements design from the box body structure,input bevel gear shaft and bevel gear structure at both ends of the bearing strength other aspects are carried out.…”
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20888
Energy Transfer Using Gradient Index Metamaterial
Published 2018-01-01“…The gradient refractive index structure in this paper is used to increase the quantum of energy transfer. …”
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20889
地铁转向架排障器的结构改进及疲劳性能评估
Published 2021-01-01“…In view of the fracture and edge crack initiation of the bogie cowcatcher during the service of a metro train,the failure causes are analyzed,and a fatigue performance evaluation method combining finite element analysis and dynamic stress test is proposed to verify the rationality of improving the structural design of the cowcatcher.Firstly,the structure of the cowcatcher with fracture or edge crack is analyzed in the aspects of design,structure,manufacturing and raw materials,and the corresponding structural improvement scheme is proposed.Secondly,the static strength and fatigue strength of the structure for the new cowcatcher are analyzed to clarify the dangerous parts according to the EN13749 standard.Thirdly,determine the strain gauge layout plan and conduct line tests considering the simulation analysis results and the operating space comprehensively.Finally,the fatigue performance evaluation of the cowcatcher is carried out by miner’s linear cumulative damage rule and IIW recommended S-N curve.The results show that the fatigue performance of the new type of cowcatcher based on finite element analysis and dynamic stress test meet the requirements,and the two support each other to further verify the rationality of the new structure design.Simultaneously,the simulation analysis results provide a theoretical reference for the reasonable arrangement of measuring points.…”
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20890
Statistics release and privacy protection method of location big data based on deep learning
Published 2022-01-01“…Aiming at the problems of the unreasonable structure and the low efficiency of the traditional statistical partition and publishing of location big data, a deep learning-based statistical partition structure prediction method and a differential publishing method were proposed to enhance the efficacy of the partition algorithm and improve the availability of the published location big data.Firstly, the two-dimensional space was intelligently partitioned and merged from the bottom to the top to construct a reasonable partition structure.Subsequently, the partition structure matrices were organized as a three-dimensional spatio-temporal sequence, and the spatio-temporal characteristics were extracted via the deep learning model in a bid to realize the prediction of the partition structure.Finally, the differential privacy budget allocation and Laplace noise addition were implemented on the prediction partition structure to realize the privacy protection of the statistical partition and publishing of location big data.Experimental comparison of the real location big data sets proves the advantages of the proposed method in improving the querying accuracy of the published location big data and the execution efficiency of the publishing algorithm.…”
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20891
Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station
Published 2021-01-01“…It is necessary to conduct in-depth discussion on the impact of the seismic performance of the built underground station structure. In this paper, a stratum-structure finite element model is established with a Chengdu subway station as an example. …”
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20892
The Study of Key Stratum Location and Characteristics on the Mining of Extremely Thick Coal Seam under Goaf
Published 2021-01-01“…A mechanical model of the bearing characteristics of the interlayer key strata structure was established according to the structure of the intercalation rock layer, which is a hinged block structure. …”
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20893
Controllable synthesis of nonlayered high-κ Mn3O4 single-crystal thin films for 2D electronics
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20894
Link optimization strategy based on spectral moment in wireless sensor network
Published 2017-11-01“…In order to prolong the life of the wireless sensor network (WSN),an adaptive local communication link optimization algorithm of nodes was proposed to optimize the network structure dynamically.By introducing the term of Laplacian spectrum moment,each node can make the decision of adding or deleting a link iteratively with their neighborsusinglimited local network structural information,and then the whole network can evolve to a predefined structure.The experimental results show that each node takes only finite iterations and then the network structure can converge quickly to the target,which prove the effectiveness of the algorithm.…”
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20895
A Cross-Sectional Network Analysis Study Applied to the Depression Anxiety Stress Scale-21 (DASS-21): A New Factor Revealed
Published 2024-01-01“…Conclusion: The classic structure of the DASS-21 (three factors) was replicated, but a four-factor model proved to be the one with the best statistical indices for nonclinical sample, providing new insight into the internal structure of this scale. …”
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20896
Prenatal light exposure affects diurnal rhythms and visual development of the layer embryonic retina
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20897
The Analysis of Stress Waves at a Junction of Beam and String
Published 2018-01-01“…The structure is studied because the existence of a soft rope makes the transmission of the force in the bridge structure different from the traditional theory, and it is the basis for further research. …”
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20898
A Network-Based Dynamic Analysis in an Equity Stock Market
Published 2017-01-01“…We study how changes in the structure of a brokers’ transaction network affect the probability with which the returns and volume of the traded financial assets change significantly. …”
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20899
Refining resource estimation for the quantum computation of vibrational molecular spectra through Trotter error analysis
Published 2025-02-01“…Compared to the electronic structure problem, the vibrational structure problem with quantum computers is less investigated. …”
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20900
Study on the Mechanism and Effect of a Partition Wall Controlling Foundation Pit Deformation in the Soft-Soil Area
Published 2022-01-01“…Results show that the influence of distance between partition wall and retaining structure, L, on controlling the internal forces of the retaining structure and maximum ground settlement, is more obvious; the maximum settlement can be reduced by more than 60%. …”
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