Suggested Topics within your search.
Suggested Topics within your search.
- Digital techniques 2
- Photography 2
- Anatomy 1
- Anesthesia 1
- Computer graphics 1
- Critical Care 1
- Digitale Photographie 1
- Economic conditions 1
- Economic development 1
- Economic forecasting 1
- Economic stabilization 1
- General 1
- Image processing 1
- Mathematical Concepts 1
- PHOTOGRAPHY 1
- Phototechnik 1
- Physical Phenomena 1
- Physiology 1
- Regression analysis 1
- Social sciences 1
- Statistical methods 1
- Techniques 1
-
3201
An Image Encryption Algorithm Based on the Improved Sine-Tent Map
Published 2021-01-01“…In this algorithm, bit rearrangement is adopted to further improve the improved sine-tent map, which can reconstruct the output value and expand the chaotic characteristics of the map. …”
Get full text
Article -
3202
Design and experimental characterization of a 350 W High Temperature PEM fuel cell stack
Published 2011-01-01“…Performance curves refer to the stack operating with two type of fuels: pure hydrogen and a gas mixture simulating a typical steam reformer output. The stack voltage distribution analysis and the stack temperature distribution analysis suggest that cathode air could be used as coolant leading to a better thermal management. …”
Get full text
Article -
3203
Optimal Robust Adaptive Fuzzy H∞ Tracking Control without Reaching Phase for Nonlinear System
Published 2013-01-01“…Secondly, to eliminate the trade-off between H∞ tracking performance and high gain at the control input, a modified output tracking error has been used. The stability is ensured through Lyapunov synthesis and the effectiveness of the proposed method is proved and the simulation is also given to illustrate the superiority of the proposed approach.…”
Get full text
Article -
3204
Application of a Neural Network Model for Prediction of Wear Properties of Ultrahigh Molecular Weight Polyethylene Composites
Published 2015-01-01“…The carbon nanotube (CNT), carbon fiber (CF), graphene oxide (GO), and wollastonite additives are the main input parameters and the volume loss is the output parameter for the developed NN. It was observed that the sliding speed and applied load have a stronger effect on the volume loss of UHMWPE composites in comparison to other input parameters. …”
Get full text
Article -
3205
Decoupling Suspension Controller Based on Magnetic Flux Feedback
Published 2013-01-01“…The suspension module control system model has been established based on MIMO (multiple input and multiple output) state feedback linearization. We have completed decoupling between double suspension points, and the new decoupling method has been applied to CMS04 magnetic suspension vehicle in national mid-low-speed maglev experiment field of Tangshan city in China. …”
Get full text
Article -
3206
Symbiosis Evolution of E-commerce Platform Ecosystem with Cooperative and Competitive Effect: An Extended Population Density Logistic Model-Based Simulation
Published 2023-01-01“…The contribution coefficient of subordinate to the dominant is greater than the feedback coefficient from the dominant; the trends of output value are inconsistent. The symmetric symbiosis mode is the optimal model for participants and platforms. …”
Get full text
Article -
3207
Improved transmit beamforming design based on ADMM for low probability of intercept of FDA-MIMO radar
Published 2022-04-01“…Considering the low probability of intercept problem that the signal-dependent interference and the target were located in the same angle, an improved transmit beamforming design based on the alternating direction method of multipliers (ADMM) was proposed for multiple-input multiple-output with frequency diverse array radar.The transmit energy was minimized at the target under constraints of the energy at each transmitter and signal clutter-plus-noise ratio requirement.Subsequently, a cyclic algorithm was developed to tackle the non-convex design problem.Firstly, the optimal receive filter was obtained by generalized Rayleigh quotient.And then the transmit beamforming was optimized by employing auxiliary variables and ADMM to solve quadratic programming problem with fractional inequality constraint.Moreover, both the convergence and computational complexity of the proposed algorithm were discussed.Simulation results show that, compared with the semi-denite programming method, the proposed method not only attains the given antenna power, but also achieves the better mainlobe focusing performance at the target.Furthermore, the null levels at the clutter locations and the jamming directions obtained by the proposed method are -50 dB above.…”
Get full text
Article -
3208
The snow avalanches risk on Alpine roads network
Published 2014-10-01“…These indicators were modeled using the graph theory in a GIS framework, integrating avalanche activity indicators derived from the past activity with the road network. The obtained output maps should facilitate the decision support for crisis management and a comparative spatial analysis at the regional scale.…”
Get full text
Article -
3209
3D Large-Pose Face Alignment Method Based on the Truncated Alexnet Cascade Network
Published 2020-01-01“…The parallel convolution pooling layers are added for concatenating parallel results in the original deep convolution neural network, which improves the accuracy of the output. Sending the intermediate parameter which is the result of each iteration into CNN and iterating repeatedly to optimize the pose parameter in order to get more accurate results of face alignment. …”
Get full text
Article -
3210
ChatGpt et apprentissage de la grammaire anglaise à la lumière de la grammaire métaopérationnelle
Published 2025-01-01“…Cependant, il convient de s’interroger sur l’apport de ces nouveaux outils d’apprentissage en vue non seulement d’en connaître les limites mais aussi et surtout de proposer des supports contributifs pour l’amélioration de l’apprentissage de la grammaire. …”
Get full text
Article -
3211
FDA-MIMO Beampattern Synthesis with an Analytical Method
Published 2021-01-01“…Since the beampattern has the characteristics of range-angle dependence, frequency diverse array multiple-input multiple-output (FDA-MIMO) radar has a good application prospect. …”
Get full text
Article -
3212
Evaluating Route and Frequency Design of Bus Lines Based on Data Envelopment Analysis with Network Epsilon-Based Measures
Published 2019-01-01“…Both NEBM models can simultaneously consider radial and nonradial inputs and outputs and dig into details of the “input/output transformation box.” …”
Get full text
Article -
3213
Conical Mecanum Wheel of Adjusting Roller Offset Angle based on Spherical Four-bar Mechanism
Published 2019-07-01“…By establishing the spherical four-bar mechanism kinematics model, the input and output equations of the spherical four-bar mechanism are solved. …”
Get full text
Article -
3214
High Isolation Millimeter-Wave Wideband MIMO Antenna for 5G Communication
Published 2019-01-01“…Furthermore, a 9×9 multiple-input-multiple-output (MIMO) antenna is developed. The high isolation is achieved without introducing external decoupling structures. …”
Get full text
Article -
3215
Robust identification for input non‐uniformly sampled Wiener model by the expectation‐maximisation algorithm
Published 2022-05-01“…Under the expectation‐maximisation (EM) algorithm framework, the student's t‐distribution is introduced to model the contaminated output data. The variance scale is regarded as a unique latent variable, and the iterative parameter estimation formula of the non‐uniform sampling Wiener model is derived. …”
Get full text
Article -
3216
Research on the Modeling and Kinematic Simulation Analysis of Parallel Indexing Cam Mechanism
Published 2020-03-01“…Through the analysis of the indexing motion of parallel indexing cam mechanism,the mathematical model of the contour surface of parallel indexing cam is established by using the homogeneous coordinate transformation method,the data points of the contour surface are collected by software programming,the three-dimensional model of the mechanism is established by Creo and output to Adams after assembly,the virtual prototype of the mechanism is established and the kinematic characteristics are simulated. …”
Get full text
Article -
3217
Polarization-based puncturing pattern selection of shortened Polar code
Published 2019-02-01“…In order to solve the problem of inflexible Polar code length,a new puncturing pattern selection scheme based on feedback cost puncturing was proposed to generate shortened Polar codes.In this scheme,the Polarization effect was reserved,the sub-optimal subchannel was selected as the cost bit,the output bit corresponding to the cost bit was used as the puncturing pattern,and then the value of the cost bit is adjusted by feedback to obtain the shortened Polar code.Simulation results show that the performance of the proposed shortened Polar code is better than that of the shortened Polar code generated by bit-reversal permutation method,and the shortened Polar codes generated by direct puncturing method at the end under different channel and code rate conditions,and slightly weaker than that of the shortened Polar code proposed by Wang R and Liu R et al.In the AGWN channel,when the block error rate is 10<sup>-3</sup>,the proposed shortened Polar code with a code rate of 0.5 can obtain a gain of 0.5 dB compared with the shortened Polar code generated by bit-reversal permutation method,and the coding performance is greatly improved.…”
Get full text
Article -
3218
Use of the Tei Index in the Conservative Management of TRAP Sequence Pregnancies Diagnosed during the Periviable Period: A Case Series
Published 2018-01-01“…Without intervention, the viable pump twin in a case of TRAP Sequence may develop high output cardiac failure leading to an intrauterine fetal demise. …”
Get full text
Article -
3219
A Bearing Performance Degradation Modeling Method Based on EMD-SVD and Fuzzy Neural Network
Published 2019-01-01“…And the decomposed results were used as the training samples of FNN. At last, the output results of the tested data were normalized to the health index (HI) through learning and training of FNN, and then the performance degradation degree could be described by the distance between the test sample and the normal one. …”
Get full text
Article -
3220
Reliability analysis of landing gear operation based on improved support vector machine-based decomposed-coordinated
Published 2024-12-01“…The decomposition and coordination strategy decompose the composite failure problem into multiple mathematical models, and then builds the relationship between the total output response and the variable parameters according to the hierarchical relationship. …”
Get full text
Article