Delicacy flight classification and calculation of delay cost is very important for improving airport operation efficiency and reducing airline operation cost, when it is applied to manage the sequence of take-off and landing flights. The four different factors were considered, and the transitive closure...

In the case of satisfactory waterway condition, the scale of the port area affects the tonnage and size of the vessels operated in the port directly, which leads to a higher demand on the tugboat configuration in the port. In this article, a simulation model of the operation system of ships entering...

The elevation-balancing machine is used to give the elevation angle of the landing parts of the rocket launcher, and the three-chamber hydraulic cylinder is the power device in the system. In order to obtain the dynamic characteristics of cylinder reasonably and scientifically, considering the flexible...

In the analysis of the features and properties of camera based on the data, constructs the projection model and error model positioning calculation model, expanded beam method traditional adjustment model is only for image observations are optimized, constructed model with two or three dimensional positioning...

In order to support the comprehensive analysis of virtual simulation and scientific visualization of navigation environment in marine simulator, this paper carried out the visualization analysis of three-dimensional vector field data of flow field according to the space-time characteristics of river...

A new type of energy-saving life testing device used for overrunning clutch, with simple structure, symmetrical layout and low energy consumption, is proposed to simplify the testing system and solve the problems of complexity, bulkiness and high cost, which exist in the traditional comprehensive testing...

This study addresses to CAD modeling of toroidal LPG fuel tanks used in automotive industry, whom section is described by imposed algebraic plane curves. The CAD modeling of toroidal LPG fuel tanks can help to better understand the dynamic movement of fuel within the tank during vehicle maneuvering.

In order to facilitate learning, increase reliability, we take advantage of the video playback system in the subjects second and third of driving exam. Vehicle trajectory can be replayed with small amount of data transferred or stored up. The system is composed of four parts: the Beidou navigation system,...

Impact is universal phenomenon in mechanical system with clearance. In order to accurately describe the effect of impact between journal and bearing in clearance joint, an improved contact force model is presented in this work, which assumes the coefficient of restitution during impact is varied, and...

In this paper, a space- and time-discrete predator-prey model with Holling type II function response is investigated. The mortality of predator is variable, which is related to the population density. The model is given by a coupled map lattice framework, it takes a nonlinear relationship between predator-prey...

In this paper, we investigate a stochastic non-autonomous Crowley-Martin predator-prey model. For the model, we first prove the existence and uniqueness of the global positive solution. For the periodic model, we prove that the existence of a positive periodic solution by using Khasminskii’s method and...

A machine learning method was used to establish a diagnostic model of potassium nutrition for rice obtained from image processing techniques. In this study, super hybrid rice "Liangyoupeijiu" was used as experimental object to set up four kinds of rice cultivation experiments at different potassium fertilization...

Face recognition technology is studied to realize the reconstructed image after many years. The principal component analysis of local facial feature extraction using MATLAB images, two value curve, corrosion and boundary contour extraction, vertical and horizontal projection contour extraction after...

Study on the characteristics of the Martian atmosphere, selecting the appropriate calculation method, combined with FLUENT fluid finite element calculation software, a simulation of the multiple steady internal flow field of environment box in the Mars atmospheric environment conditions were analyzed....

Smart house scheduling is the grid terminal demand response based on the reference signal, the electricity market price. In this paper, the user consumption perceived benefits and the system running cost were considered. In the intelligent house system with energy storage device, the load control model...

In order to know the structure stress and deformation of floating dock during off-loading, the study on simulation experiment of the force of floating dock during off-loading based on ANSYS is carried out. The simulation experiment with ANSYS can be used to research the distribution of the structure...

In multi-attribute decision making, attribute conflict and indetermination preference of the decision maker often give rise to preference reversal, which is a marked discrepancy between the preferences derived from choice and from matching judgments, thus violating traditional decision theories. To account...

The detection signal of MEMS resonant gyroscope is very weak, and it is sensitively affected by the mechanical structure and the noise of the detection circuit. Noise is an important parameter which affecting gyroscope resolution, angle random walk coefficient and zero partial stability. In this paper,...

With the development of space technology, remote sensing satellite is playing an increasingly important role in many fields. An effectiveness model of remote sensing satellite was proposed based on ADC model to provide a scientific basis for the design, development and actual use of remote sensing satellite....

This study applies language operators, trapezoidal fuzzy number, and real option to construct the trademark value evaluation model. Because of the uncertainty of future revenue and investment of the trademark utilization, compared with the traditional method, the Parameter estimation will complies with...

In order to study the modular, easy-to-assemble DC calibration current source for DC current transformer. In this paper, the technical indicators and design requirements are analyzed theoretically. Based on the structural design of various technical solutions and the applicable power range, the theoretical...

A new automotive outside airbag system based on operating characteristics of pyroelectric infrared detector is designed. Then, the working principle of airbag system is analyzed, and its effectiveness is verified by PC-CRASH simulation software. The new automotive outside airbag system can make it possible...

This paper studies a security-check system at the high-speed railway stations with two types of inspection channels, including Normal channels and Green channels. Here, general passengers go through the strict inspections in the Normal channels with unlimited waiting space, whereas special passengers...

Disc insulator is one of the most widely used basic components of transmission and distribution system. It is necessary to carry out the stress analysis of its structure. In this paper, ANSYS finite element software is used to simplify the insulator model into an axisymmetric model. The contact stress...

Vibration energy is a kind of energy form which is ubiquitous in living environment. By using the piezoelectric principle of piezoelectric ceramics, it can design a kind of vibration energy recovery device which can effectively transform the vibration energy in the environment. Because the fluctuation...

Marine passenger elevator is as a new type of special equipment, which has been extensively used in all kinds of marine and marine engineering development equipment. The accelerations between the simulation and test of each working conditions is different, but the trend of change is basically consistent....

In order to develop the flat-plate micro-atomizer, the flat-plate micro-atomizer based on Ansys software was simulated. In this paper, the primary research work is to discuss three types of electrode configurations. It includes plate-plate, multineedle-plate and screen mesh. They have effect on the characteristic...

We’ve developed a newer method to calculate the repulsive force between current-carrying coil and nearby metal plate. But it feels the final solution formula is complex. There are some unknown coefficients have not measured and an integral in the formula seems difficult to deal with. In the paper, we...

Human motion modeling with the proposed algorithm of complementary skeleton joints can help us to solve the problem of visual blind spot when the motion are captured by Kinects. The shooting model can be remodeled and reconstructed with the recombination and complementation of the skeleton joints by...

So as to quantitatively analyze the Zhoushan maritime search and rescue(SAR) capabilities, evaluation model was set up by the theory of fuzzy comprehensive evaluation, combination with analyze of the process of maritime SAR and summarization of the factors influencing the SAR capabilities. The results...

Given the characteristics of hilly terrain wind field is radically distinct from flat terrain wind field due to the interference of hills, the existing calculation methods of flat terrain wind field cannot be adopted directly to conduct a study on the wind-induced response of ultra-high voltage (UHV)...

Atmospheric environmental corrosion and wind-induced fatigue achieve a long-term synergistic effect, mutual coupling and promotion with each other. Under this circumstance, the speed of structural performance degradation accelerates and the ability of the structure to resist accidental loading decreases....

Based on the 3D TACD simulation, by building and simulating 90nm dual-well CMOS device under heavy ion radiation with different distance between strike position and the drain, researching the influence to NMOS, PMOS, SRAM threshold LET and the critical charge. For NMOS, with the increase of the distance,...

The communication network is becoming more sophisticated. To effectively evaluate the reliability of the communication network was a difficult task in the research of smart grid. In this paper, we propose an index model consisting of three indexes responding to communication network reliability. We can...

The article proposes the concept of a Precast Concrete SMART Factory for the concrete block production. Automated Process Control System includes a set of technological equipment, information, and software for control the objects of the production line of concrete block and tile. The system is scalable...