To achieve the minimum weight design of large-span statically determinate trusses under displacement constraint, a method called the coefficient distribution method was proposed. The calculation formula of the displacement for statically determinate trusses was provided at first. Then the critical condition...

This article carries on " Sieve Method: Sieve the Forward and Reverse In One Time" through establishing the dual element set and forms a new foundamental mathematical theory to sieve odd prime number pairs. The conclusion verifies the formula that calculating the total number of pairs that any even number...

This paper presents iterative learning control of multiple state vector system, whose initial states are equal. By introducing the vector Lyapunov function, it involves interesting criteria to guarantee the robust convergence of the tracking error in the sense of the ?- norm. Finally, the validity of...

The establishment of accurate models is vital in parametric optimization of control systems, and the choice of input variables can directly affect the accuracy and complexity of the model. Therefore, this paper proposed a modeling method based on mutual information (MI) and least squares support vector...

The purpose of this research is improving the current inject classroom teaching mode that ignores individual differences and inefficiency of students. By studying classification algorithm in data mining and applying the classification method based on Naive Bayes algorithm, we designed and implemented...

Stack or reuse distances have been widely adopted in studying memory localities and cache behaviors. However, the memory references, normally profiled by a binary instru-mentation tool, only reflect the accessing sequence of instruction fetching and load or store executions. That is why the stack or...

In order to analyze accurately the deformation of the telescopic boom in the case of large deformation, an initial deflection curve can be get according to the nonlinear bending differential equation and calculation method. The retraction amount in initial axial direction of the boom and the second-order...

In this paper, we consider the reciprocal sums of the Pell numbers by elementary methods. First, we investigate the reciprocals sums of two products of Pell numbers. Then, we study the alternating reciprocals sums of two products of Pell numbers .Last, we consider the reciprocal sums of even and odd...

This paper considers a spatial dynamic panel data regression model with fixed effects, spatial correlation of dependent variables and error serial among cross sectional units. When the number of individuals n , the number of time periods T are large, and T is asymptotically large relative to n, the paper...

The rapid development of MOOC, more and more same courses appear on the MOOC platform. For learners without the guidance of course selection, a lot of time wasted in the course to browse and try to learn. At the same time, lack of evaluation led to a decline in the quality of the course. In this paper,...

Nowadays, with the expanding of database application, every fields have accumulated huge amounts of data including the College students' activities records. These records are very meticulously reflecting the status of the students' learning and life by analysis their relationships using data mining techniques....

This paper explores the Oracle database security access control's implementation strategies, including: realize the centralized access control to the distributed Oracle database and audit through centralized policy configuration; realize the security access control to the Oracle database through encapsulating...

Propose a fusion arithmetic for trajectory data of aerocraft in flight. The method uses a variety of trajectory data which we can get for fusion calculation, then we can reduce a compositive trajectory data for digital-guided, and as the basis of judging the aerocraft flight state. Through the past,...

The objective of this paper is to test the applicability of arbitrage pricing theory specifically for the performance of the SSE 50 Index composite stocks listed on China's Shanghai Stock Market. Two groups of the SSE 50 Index stocks have been selected and tested. Principal component analysis is used...

The article presents the results of a detailed analysis of data from the General Traffic Measurements carried out in the years 2000 - 2015 on voivodeship roads. The analysis was carried out on the results from the Łódź Voivodeship in Poland.

Missing outcome data occurs often in the causal inference of observational studies. For example, in observational study on the safety of a Traditional Chinese Medicine (TCM) injection in market, some patients are missing safety outcome variables. In this paper we proposed a consistent estimator for the...

Aiming at the design and manufacture difficulty of stubble-cutting disc with oblique ripples, taking one made by America as research object, a kind of computer aided design method was proposed, which was fulfilled in the basis of the structural parameters that were obtained through reverse engineering...

The "Goldbach conjecture" is proved by "simultaneous screening of positive and negative sides". And the computational values of "modeling" in various scientific fields coincide with reality, theory, experiment and astronomical observation. The universe is superimposed by the energy of equal positive...

Double channel forming machine opening quality data by sampling and conversion into the mining of association rules based on Apriori algorithm, correctness verification and quality deviation setting parameters, makes the equipment in adjusting the parameters set to drive the delivery index get reliable...

Dynamic matching between inspect resources and business processes in digital inspect and MBD (Model Based Definition) environments is a challenging problem. This paper present an approach of building a digital inspection management model based on process-resource dynamic configuration system. Furthermore,...

Since Gaussian process regression (GPR) cannot feasibly be applied to big and growing data sets, this paper introduces an integration algorithm called Two-step Gaussian Process Regression (TGPR) which speeds up both training and prediction to solve the problem. First, analyze the basics behind regular...

In view of the repairable spare parts, considering the actual situation that component commonality exists in warship equipment, the requirements of spare parts and sites in all levels are modified. A multi-echelon configuration model of common parts based on METRIC theory is established. The marginal...

According to flatness error measurement of revolving body end-face, selection of sample points for flatness error measurement and flatness error evaluation method are mainly researched, the influencing factors are analyzed. Former concentric circular selection of sample points gets many restrictions,...

A fast and robust differential evolution based on orthogonal design (ODE) is proposed, and then it is used to solve constrained optimization problems. The ODE combines the conventional DE (CDE), which is simple and efficient, with the orthogonal design, which can exploit the optimum offspring. The ODE...

Workload characterization is the basis for similarity analysis, which is the core idea behind benchmark subsetting to pick up the most representative programs or program slices. The set of characteristics is crucial to the result of similarity analysis. Current studies typically use microarchitecture-independent...

With the enhanced competition of enterprises on the talent, the rational manpower planning in enterprises to protect the human resources needs of enterprises becomes an important driving force to promote the development of enterprises. Human resources forecast is the premise and basis of manpower planning,...

The synchronization and coordination of material flows in the assembly system is much more important and complex. To analyze how to coordinate the material flows for the assembly supply chain, we consider an assembly system with two component-suppliers and one manufacturer, under stochastic finished...

As an emerging high-tech device, the SUAV plays a more and more significant role in military and civilian fields because of its advantages such as low cost, high safety, flexible usability and easy maintenance. The flight control system is the core of the SUAV, which exerts a big influence on SUAV performance...