In order to completely perform the mission, It is significant to study the trajectory of projectiles, e.g. Unmanned Underwater Vehicle (UUV) in the process of submarine launch. Three dimensional numerical model is established based on the volume of fluid (VOF) method in combination with the realizable...

The authors have a lot researches about numerical simulation of resin transfer molding for resin-based composite materials based on unstructured grid in the past. In these researches the authors found while the grid is orthogonal, the simulation is agreed with facts. But the grid is non- orthogonal,...

The issues of dynamic buckling of elastic bar impacted by a rigid body before and after the stress wave reflection were studied by considering the stress wave effect. Based on the Hamiltonian principle, the dynamic buckling control equations and constraint conditions at the wavefront were derived in...

The visualization technique is an effective tool to extract useful information from the geological data. In this paper, we proposed an efficient visualization framework that can render large-scale geological truncated mesh in real-time. The geological models of different resolutions were generated by...

In this paper, author studies of solution the energy for a nonlocal semilinear parabolic modeling. This modeling of equation that describes some phenomena of biological sciences is given. The author solves some problems involved in the model. First, the definition of energy is introduced. Secondly, the...

In this paper, a new sixth order alternating group iterative (AGI) scheme is derived based on the two point boundary value problem. The scheme is capable of parallel computation; sixth order accurate in space .The numerical examples show that this AGI scheme are more accurate than the fourth order alternating...

In this paper, a better estimate of the Hermite type inequality for the product of two convex functions is established, and the proof is given. Then the inferences and applications of the inequalities obtained are provided.

In this paper, variational iteration method is applied for finding the analytic approximate solution of Logistic equation with piecewise constant arguments. A correction functional is constructed by a general Lagrange multiplier, which can be identified by variational theory. Moreover, the iteration...

Binary quadratic programming (BQP) problem was an NP-hard problem and had a large number of applications. In this paper, a new relaxation method, that was doubly nonnegative relaxation, was proposed for solving BQP problem. Moreover, we prove that the doubly nonnegative relaxation for BQP is equivalent...

In this paper, we investigate the oscillation properties of a class of impulsive partial fractional differential equations with several delays. Some sucient conditions for oscillation of the solutions are obtained by employing integral transformation technique and differential inequality method, and...

The modulus-based matrix multi-splitting multi-parameter methods for solving a class of weakly nonlinear complementarity problem are presented. The weaker convergence conditions are analyzed. The numerical results show that the new methods are efficient.

The intersection graph of bases of a matroid M=(E, B) is a graph G with vertex set V(G) and edge set E(G) such that V(G)=B and E(G)=BB', where the same notation is used for the vertices of G and the bases of M, B and B' has no intersection. In this paper, we prove that for any given edge e of G, the...

This paper aims at the measurement problem of High Intensity Focused Ultrasound (HIFU). In order to measure the sound parameters of HIFU, we study the near-field cross-spectrum method. That is to say, the complex sound pressure of two adjacent planes can be measured in the near field, besides, the sound...

Temperature and ampacity of cables are obtained by calculating the Standard model of IEC 60287 familiarly. However, It is difficult to calculate the ampacity of cable laying in tunnel precisely by using traditional computing model with complex structure, variable environment of cable tunnels. Thence,...

The influence of the size, structure and material of the frame on the explosion pressure is studied aiming at typical controller control cabinet. It is proved that the maximum stress value decreases with the increase of the thickness of the main chamber under blast pressure. The clearance value of the...

The random error characteristics of optical voltage sensors (OVS) directly affect the measurement accuracy. Sequence variance is a commonly used method to evaluate the characteristics of the OVS random error. However, sequence variance does not model the OVS noise itself and does not identify the noise...

Precipitation has been shown to increase soil water storage (SWS) and soil infiltration depth (SID) while significantly restrain crop water use (i.e., crop evapotraspiration, ETc) during rainy days. However, the reducing effects on ETc and increasing effects on SWS and SID has not been well quantified...

In this paper, Using JVC model high-speed video camera for three-dimensional cameraˎ literatureˎ mathematical statistics and other research methods. Correcting the ITF Youth Masters women's single runner Uwan gets on biomechanical research. Using 3D Signal Tec analysis system for the shooting video recorded...

This report is to analyze the serve technique of elite tennis athlete Roushwali, the champion of 2017 ITF Junior Masters. The report discussed this topic in virtue of three-dimensional video analytic method. According to the purpose and need for this study and combined with the actual technical movements,...

In this paper, a cold chain vehicle routing problem with fuzzy time windows (CVRPFTW) is proposed and solved. This paper applies fuzzy membership functions to characterize the customer’s satisfaction level issues associated with time window violation in a vehicle routing problem and proposes CVRPFTW....

Hesitant fuzzy set allow an element in the domain with a set of membership degree between 0 and 1, which is a powerful tool to express the uncertainty alternative assessment value of decision makers. A hesitant fuzzy multiple attribute decision making method is proposed based on additive consistency...

Big size of both pitch and thread form of trapezoidal thread and high accuracy tend to cause serious tool tip wear, and even breaking edge and tipping due to deep penetration, fast feeding and large hogging. High-efficient trapezoidal thread turning by the CNC remains a mechanical problem for the time...

This paper studies the Compass Positioning and WI-FI positioning etc. for single point positioning and measurement of distance between two points in the error range. As a reference, GPS measurement data with accurate positioning is shown else. On this basis, calculation rules of the area measurement...

This paper through the use of super- resolution image reconstruction technology, it is using multiple low resolution images of the same scene, the relative movement between the information they are integrated into a single frame in the high resolution image, and the initial high-resolution images of...

The evaluation and analysis of the combat capability of the weapon and equipment system is one of the hot issues to be studied in the contemporary military development process. Since it is a complex system, the correlation between the internal components has a greater impact on the assessment of combat...

The failure mode and antiknock performance of equilateral angle steel component were investigated by explosion experiments on 9 equilateral Angle steel specimens. The blast pressure time curve, acceleration time curve and strain time curve of each part were obtained. The deformation characteristics of...

Chaotic synchronization has great potential applications in engineering, physics and mathematics. Memristive hyperchaotic system synchronization is a hot spot for synchronization study. A practical synchronization approach is used in this paper. Compared with previous synchronization methods, this approach...

The proposition of increased innovation in network applications and reduced cost for network operators has won over the networking world to the vision of Software-Defined Networking (SDN). In this new architecture, the network resources at the data plane are shared and different tenants can have competing...