There are many kinds of self similar fractal sets, of which there are many kinds of self similar fractal sets on measure is very difficult to achieve, even if can find it is hard to find the relatively high degree of approximation value, this article attempts to explore the method for solving the generalized Sierpinski gasket the Hausdorff upper measure, this method is used to estimate the Hausdorff upper measure more accurate approxima-tion. Finally, the generalized Sierpinski gasket try to further promote and explore its Hausdorff upper measure.
Generally, the heating method of electric blanket in the market is full-wave heating, and the heating temperature is controlled with different gears.It need shift the switch manually, which results in the tem-perature too high after a long time using which may reduce the sleep quality.To overcome this disadvantage, a half-wave heating electric blanket switch was designed based on 555 timer.The key elements in this switch are the multivibrator based on 555 timer and half wave ballast.The test result shows that the design can not only re-duce the shift trouble caused by discomfort coming from too high temperature, but also can save energy.
The improvement of Motorsports performance was studied.Establishing and improving handling stability test method is effective to reduce accidents.The vehicle handling and stability was tested on the basis of existing test methods.The test results were obtained using post-processing software.The results can support further research.
The mechanical property of heterogeneous material contains uncertainties across scales.Con-struction of numerical model has theoretical values and practical engineering significance for its ability to investi-gate and predict the mechanical properties of the material.The multi -scale stochastic finite element method ( MsSFEM) was proposed on this macro environment.Based on the homogenization theory and two-scale mod-el, the article is aimed to achieve a complete simulation of linear elliptic problem, of which the stochastic is peri-odical distributed.According to the numerical result of perturbation method, the equivalent number was given for the random parameter;with the Karhunen-Loeve decomposition, Polynomial Chaos expansion and the Galerkin projection.The stochastic progress was fully considered during the solving procedure.By the comparison between the results of Monte-Carlo method and MsSFEM, the reliability to solve the general stochastic problem of the method was proven.With the improving of the dimensions and orders, the analysis results were closed to the real solution generally.Furthermore, the ultimate dimensions and order were figured out at the end of the article.
This paper induced the design points of the single pile foundation of offshore anemometer tower and proposed its design method combining with the environmental characteristics of offshore anemometer towers . A design example was analyzed , which provides a reference for similar engineering .
2205 duplex stainless steel was welded using IGTB inverter type CO2 gas shielded welding. According to the standard GB6398- 2000,the fatigue crack growth test of welded joint was carried out. Through testing the fatigue crack growth rate,and using Matlab software and Paris equation of linear regression analysis of data,the fatigue crack growth rate lg( da / d N)- lgΔK curve of different regions of the butt joint was gotten.The results show that the difference between butt joint's fatigue crack growth rates is remarkable at the same stress ratio. The heat affected zone's fatigue crack growth rate is the fastest while the welding zone is the lowest. The fatigue fracture was observed using SEM method,and the reason why the difference between butt joint 's fatigue crack growth rates is remarkable was interpreted.
Hesitate fuzzy soft set combines the advantages of soft sets and hesitate fuzzy sets , but scholars on related studies of hesitate fuzzy soft set is still relatively few .Therefore , it is very necessary to study the hesi-tate fuzzy soft set .First, some common distance measures of hesitate fuzzy soft set are defined .Then, on the ba-sis of distance measures , the prospect theory was applied into hesitate fuzzy soft set and the hesitate fuzzy soft set MCDM methods were proposed based on prospect theory .Finally, the feasibility and effectiveness of this method were verified by a numerical example .
The static simulation analysis can be completed according to the actual working condition of truss bracket structure condenser. Then the resonant frequency can be gotten,which will have an influence on the structure and working performance of condenser,in the light of modal analysis. The size of truss rod was optimized using ANSYS optimization module,by which the optimal weight of truss bracket structure can be accomplished with the limits of the design requirement,the normal function of the products can be performed and the enterprise's production costs can be reduced.
By Using the different options of the coefficient of the matrix eigenvalue inclusion region theo-rem and different types of estimation of elements of inverse matrix A-1 of nonsingular M matrix A , some new lower bounds of the q( A°A-1 ) ,q( B°A-1 ) , were obtained .These Estimators make the lower bound of choice more a-bundant of q( A°A-1 ) ,q( B°A-1 ) .
To improve traffic flow, a dual-lane traffic flow model was established based on cellular auto-mation theory.Space-time charts of traffic flow were plotted under different traffic rules and traffic conditions. The effect of traffic flow was analyzed.As a result, the traffic rules were optimized to improve traffic flow.The traffic capacity of road was improved.
This thesis discussed the problem of modeling and evaluation of fast time -varying channels in wireless communication .First, the concept of BEM function was adopted to build the model , using the existing channel parameters of the data in the test .Then the fast time -varying channel was evaluated according to the two indexes -the accuracy of the evaluation and the complexity of the algorithm comprehensively .Last , this the-sis presented the conclusion of the simulation .
The main purpose of this paper is to study the existence of solutions of initial value for nonlin -ear fractional differential equations on the half -axis.By constructing a special Banach space and employing Schauder fixed-point theorems , the existence of solutions of initial value on the half -axis was proved .
BGP is the only inter -domain routing protocol deployed on the Internet , which allows each Automous System ( AS) to define its own routing policies independently and use them to select the best routes . However , this flexibility can possibly cause BGP routing divergence behavior because of mutually conflicting poli -cies.An approach to guarantee BGP convergence based on AS relationship was proposed .The proposed approach dynamically detects policy conflicts , and tries to eliminate the conflict by changing the local preference for the paths involved .Simulation result proved the efficient of the proposed approach .
Traditional injection mold involves low efficiency of development and high cost due to the limitations of mold testing and mold modification.This paper analyzed mold filling flow with Moldflow to predict the existing problems of injection molding.Numerical simulation technology was used to perform feasible mold testing analysis many times and modify the mold based on the practice of production and manufacturing.Finally,a reasonable pouring and cooling system was obtained,which provides important reference basis for mold design.
The information flow and communication of lean production and traditional production are total-ly different .Currently , there are few measurable assessment methods to measure and compare the efficiency of production system's information flow objectively .An assessment method using information theory was proposed in this paper to quantify the differences of both lean production and traditional production in regard of their informa -tion flows.An example of an assembly line was presented to validate the assessment method and to provide solid prove for the high efficiency of a lean production system .
Based on the real -time tracking of UAV photoelectric reconnaissance platform to the ground moving target , this paper presented a method of optical velocity measurement to the ground moving target .Based on the pitch angle , azimuth angle and distance between UAV and target provided by the photoelectric reconnais-sance platform, combining with the 3D pose information of UAV, the velocity measurement model of UAV photo-electric reconnaissance platform to the ground moving target was built .The error source of the velocity measure-ment model was analyzed and the error calculation formula was derived .This method can meet demand of veloci-ty measurement of moving target in the field of UAV reconnaissance without locating the target .
An optimal correlation filter algorithm was proposed in face recognition by illumination varia-tion, in order to reduce the problems due to changes in illumination which seriously affects the recognition per -formance.A couple of correlation filters were generated using 2DPCA with class specified to reconstruct face ima-ges.Then, the filter was used to project testing images to two -dimensional subspace , and refactoring correlation filter was used to reconstruct images .Finally , face recognition was finished by preset lighting tolerance thresh-old .The effectiveness of proposed algorithm has been verified by experiments on YaleB databases .Experimental results show that the proposed algorithm has higher recognition rate .
In this paper,interference item was introduced in the risk model of compound Poisson process.Adjustment coefficient and the formula of the ruin probability were derived.By the case,the relationship between the ruin probability and the initial capital of the medical insurance risk model of migrant works was discussed.
In order to realize the traditional Chinese medicine composition quantitative analysis and quality control,an intelligent management fingerprint system of traditional Chinese medicine based on Web was built by the. NET platform,SQL Server database and learning vector quantization neural network,which realized the classification and recognition of fingerprint of traditional Chinese medicine,and information sharing in Web mode.The system provides guarantee for the quality of the modern management of traditional Chinese medicine.
Generally,the frame- core tube structure is shear bending or bending shear type structure.The common inter- story drifts,which reflect inter- story deformation,or the harmful inter- story drifts cannot reflect the partial deformation characters of structures accurately. In this study,the common frame- core tube structures were divided into different plane grids,also,generalized shear deformation was introduced in order to discuss the deformation change law and mutual relationship of different grids. This paper proposed a simplified calculation method of generalized shear deformation and it studied optimal allocation of placing metallic dampers in frame- tube structure. Finally,a practical engineering was exemplified with the response spectrum method and nonlinear time history analysis method to analyze different damping effects of different dissipation schemes that metal energy dissipative devices were placed in different grids. The conclusion shows that the scheme that the mental dissipative devices are placed in grids between core tube and frame column is better than that placed in grids between the outer frame columns. Thus some experiences can be afforded for the design of energy dissipation in the frame- tube structure.
