Advances in Engineering Research

The Field Programmable Gate Array(FPGA) can be used to generate PWM waves to control DC motor’s working, therefore a system of automobile’s automatic wipers which could convert wipers’ speed autonomously were designed base on it in this paper. The core module of the system was FPGA which generated PWM...

This paper is dedicated to find a unique solution for the optimization of engine performance and emissions which have a trade-off between NOx-soot-BSFC. To develop regression models for engine performance and emissions, multiple nonlinear regression with uniform design is employed. And the accuracy of...

The results of MLA automated quantitative mineralogy system indicated the uranium ore used in this study was mainly composed by pitchblende (0.467%), quartz (64.911%), fluorite (2.177%) and pyrite (0.436%). High content fluorite and low content pyrite mineral were unfavorable for extracting of uranium...

The cooperation of Beijing-Tianjin-Hebei government is very important to the coordinated development of Beijing-Tianjin-Hebei manufacturing, and is of great significance for promoting the development of regional economic integration of the Beijing-Tianjin-Hebei region. Combined with the characteristics...

We set up a mathematical model in connection with sun shadow positioning technology and apply it to solving analytic function and parallel simulated annealing algorithm to establish the optimization Model with the objective function of the angles produced by the shadow changes and the minimum error between...

The paper assume a new scheme for UAV TT&C and information transmission system, according to the function and performance requirement of UAV TT&C and information transmission system and the characteristic of ground-air wireless channel of UAV system, and combing with the key technologies of wireless...

Calibration is in dock ship-borne equipment to determine the error model and the basic process of establishing unified coordinate system, to be combed through the calibration project, and to be combined with the existing equipment, so automatic calibration system is designed. The automation to be realized...

The door has become an access point to a house where it is used for entering and exiting. Security is one of the crucial factors in a residence. Criminal activities often occur by tampering or breaking the lock system of the house door. Currently, the security of house doors generally still relies on...

The concept of self-healing concrete has gained significant attention as a sustainable solution to the common problem of microcracks that compromise the durability and longevity of concrete structures. Among various self-healing techniques, the use of bio-inspired methods, particularly algae-based healing...

With the development of artificial intelligence and wearable devices, brain-computer interface (BCI) has gradually shifted from basic research to practical applications. The data collected by traditional embedded brain-computer interfaces (BCIs) are often highly complex and uncertain, posing significant...

Tuned liquid dampers (TLD) have been widely applied in the area of vibration control for the advantages of economy, easy implementation and multifunction. However, the traditional TLD needs to be improved because of its narrow control frequency ranges and unsatisfactory capability. Based on a traditional...

Military simulation analysis and evaluation system (MASES) may integrate simulation into real Command & Control system. JMSEs could depict various entities of the real world and carry out their full functional modeling, which can be regarded as the function unit of MASES. This paper describes the concept...

This paper analyzed the content, distribution, and sedimentation mechanism of Cd in Jiaozhou Bay based on investigation data in April, July and October 1985. Results showed that the Cd contents in surface waters ranged from 0.04-0.32 g L-1, and were meeting Grade I for Cd (1.00 g L-1) in Chinese Sea...

Cold spray in used to form Al coating on AZ31 magnesium alloy. Several parameters, such as spraying distance, gas temperature, and gas pressure are selected as the main processing parameters for cold spray. According to orthogonal design, orthogonal experiments are designed for the optimization of processing...

A set of command simulation system, which can be used for training of jumpmasters, later evaluating of training situation, as well as aiding of decision making, is developed in this paper. The software system realizes teaching monitoring, teaching quality assessment, and automatic forced parachuting...

With the development of science and technology and the formation of a comprehensive multidisciplinary technology. The emergence of new permanent magnetic actuator and electronic operation of synchronous technology in the field of pressure to achieve a hardware basis. In order to meet the high reliability...

As a clean, economic and sustainable development of energy, nuclear power was increasingly rose by the whole world. Nuclear power industry is inseparable from the development of nuclear materials. Any breakthrough in nuclear technology depends on the first breakthrough in nuclear materials. This paper...

The contraction of fossil fuels increasing demand for petroleum fuels precipitate extensive research on substitute sources of energy for internal combustion enginesin terms of energy efficiency, the increase in fuel costs and severe emission standards have quite a substantial impact on the economic prosperity...

To solve the problem that the traditional method can't perfectly achieve the feature detection of low-texture image in stereo matching, a three-dimensional measurement algorithm based on Snake Model and epipolar constraint is proposed in this paper. First, describe the edges of object image as a set...

The cadmium (Cd) accumulation characteristics of Lycopersicon esculentum seedlings were studied by the pot experiment, and different soil Cd concentrations (0, 1, 5, 10, 15 and 20 mg/kg) were used. With the increase of soil Cd concentration, the biomass and photosynthetic pigment content of L. esculentum...

During static load test, the pile body is likely to have the problem of eccentric compression. Engineering practice suggests that the key of static load test lies in the avoidance of pile eccentric compression, the precise control of pile driving pressure, and accurate measurement of vertical deformation...

Force mechanism of CFRP reinforced anchorage is discussed in this thesis, where epoxy resin is used as adhesive agent. Taking the length of anchorage, the load, the thickness of resin and elastic modulus etc. as the main parameters, the shearing stress on the interface between tendons and resin were...

In view of the huge computing, poor anti-interference ability of traditional detection alogrithm, it does not meet the requirement of the vehicle system, for which this paper proposed a lane detection method based on OpenCV. Preprocessing image in the OpenCV environment, adopting LMedSquare(Least Median...

Travel distance is an important factor that influences the traffic mode choice and route choice. Considering the influences that travel distance exerts on different perceived costs, a multimodal user equilibrium assignment method is proposed. Firstly, travel behaviors of travelers in the multimodal transportation...

The dynamic response of a maxillary molar with periodontal ligament (PDL) was investigated to explore the dynamic behavior of the tooth. Three-dimensional (3D) finite element model of a maxillary molar with periodontium was constructed using CT image-reconstruction. The modal vibration of the maxillary...

The Paper summarizes the electromagnetic shielding technology and introduces structure form and key points of thermal design of a kind of forced-air-cooling closed cabinet and structure composition of electrical system cabinet of a shipboard device. Calculate and analyze heat dissipation and select draught...

The educational toys is a kind of integrating educational fun products. All of logical thinking ability, memory, ability, willpower can get plenty of exercise in the process of the children at play. This topic combined with 2-4 years old children's physical characteristics and requirements, according...

Reactive powder contrete (RPC) is a high performance concrete. According to our results show that the single steel fiber when mixed with RPC, 28d highest compressive strength of RPC is 80.3MPa, flexural strength 13.45MPa, respectively, higher than the reference RPC 14.96% and 18.92%; Single polypropylene...

The changes of underwater level have great impacts on the seepage field and the stability of reservoir landslide. The permeability coefficient is the principal factor that impacts on the changes of underwater. Based on the landslide in Three Gorges Reservoir area, the computing model was established...

To explore degradation law and failure mechanisms of AlGaN/GaN HEMT under different temperature conditions, the step-temperature stress experiments are carried out. The results show that the drain-source current decreases with the aging time when the junction temperature range from 139 to 200 ; while...

Considering the relative large heat capacity of water, this study intends to assess the application of heating blanket as a homoiothermal heating source to heat water in the floating nursery pond. In order to minimize the unfavorable effects of low temperature on the growth of seeds, this study tries...

This paper presents a new adaptive overcurrent protection for distribution network with high penetration rate DG. The equivalent impedance of DG is calculated by fault components during fault transient state, and works as the premise for protection configuration. The principle and the configuration method...

Study on the ground target recognition for radar on multiple platforms based on SAR has been perfected gradually, however in view of the radar on missile platform, its velocity is high, and its trajectory is limited, using HRRP has advantages of strong real-time, low computational complexity compared...

In recent years, the increasing emphasis on personal health monitoring has accelerated the development of wearable medical devices, with notable trends toward miniaturization, user-friendliness, and intelligent features. As a vital bioelectrical signal indicative of cardiovascular diseases and other...

The motion behavior of droplets under non-uniform electric field is an important branch of the study of electro-hydrodynamic. In this paper, the theoretical analysis of the force of droplets in the non-uniform electric field are carried out, and the study found that the deformation, surface charge density,...

Researches about the separation process of valuable metals for nickel-cobalt ore bio-leaching solution had already been continuously studied, while studies about its thermodynamic properties has not been carries out. This paper conducted research about thermodynamic properties including conductivity,...

Energy efficiency is one of the most important issues in designing the future Internet. For examining an energy efficient router, in this paper, differnet routers such as rate control protocol (RCP) router, precision time protocol (PTP) router and reference router are compared in terms of the power consumption....

In China, the power sector is the largest source of emissions, account for about 50% of CO2 emission nationwide, meanwhile the power sector plays a pivotal and irreplaceable role in promoting low-carbon development. In all seven polite markets, power generation companies are the companies under control....

Hong Kong South China Morning network according to FlightStats.com of statistics said: China of flights delays most serious, according to this problem, paper proposed has a optimization flights of scheduling optimization algorithm. Taking a certain period of time and a certain airport as the research...

The research background and characteristics of compound bioflocculant (CBF) were introduced. The paper focused on research and application of CBF, including producing compound bioflocculant by Low-cost substrate and engineering application of CBF. Finally the research development of CBF in the future...

Based on the embedded multi - functional family assistant is a smart robot doll based on the Internet of Things with multiple operating modes, which is composed of many functions, such as, calendar, weather forecast, indoor temperature and humidity, memorandum, an alarm system for matter safety supervision...

Along with the rapid development of UHV AC/DC interconnected power grid and the construction of the power dispatching data network, the resources allocation capability of power grid in wide area has been enhanced greatly. Now, the power grid operation faces a series of challenges, such as the centralized...

In order to obtain the variation rule of shadow length of the pole in a certain period of time, this paper establishes a model of the change of shadow length with each parameter. First of all, according to the observation date, the solar declination is obtained. In this paper, to make the calculation...

In this paper, a new method of joint control of seam tracking and welding quality was used. Arc sensor gets the welding deviation information and ultrasonic sensor gets the welding penetration information. Using the fusion algorithm of combination of optimal weight and recursive least square algorithm...

With the rapid development of power electronic devices, high-power IGBT is increasingly popular, It is used as a switching device in SVG static var generator. Due to the large switching losses, we need to design a suitable radiator, to maintain the highest temperature of 80 C in working condition, then...

In order to improve the working performance of axial flow roller of harvester, light weight design of an axial flow roller was conducted based on sensitivity analysis. Under the CAD/CAE integrated design platforms, the statics finite analysis and sensitivity analysis of the axial flow roller were executed...

The separation performance of the teetered bed separator for coarse coal slurry has been investigated. Experimental results show that the stability of the teeter bed has huge impact on separation efficiency. A number of data describe that the recovery of the separator involves both particle density and...

With the rapid growth of colleges and universities education resources, people more frequently access to those resources on the network, but the distribution of resources is too loose and the repeat of resources is too high, people need a lot of time to get information from those resources and constantly...

Based on the virtual maintenance teaching and motion-sensing technology, studied the introduction of the feeling device Kinect, operation substitute design, Maintenance of posture position etc. under the Unity3D development environment. Practical application proved that body feeling maintenance teaching...

For experiment platform of robot teleoperation control system requires expensive robot and master equipment, a method of robot construction of 3D simulation system for robot teleoperation is presented. According to the analysis of composition of robot teleoperation control system, the master equipment...

Air intake system is frequently required to replace filter unit, resulting in high operation and maintenance cost, which can be attributed to the failure to fully take account of the domestic air quality. Based on real power plant operational data, a mathematical model was built to analyze the life cycle...

As one of the passive jamming methods, the corner reflector has wide frequency band and strong RCS stability. Through analyzing the anti-ship missiles searching process, anti-ship missiles object recognitions, mechanism of corner reflector, we analyze the use of three jamming method, confusion jamming,...

According to structural feature and operating characteristic of several kinds of new style steam seal, their application position in flow passage and axle head is introduced in this paper. Energy saving effect is generalized by synthetically analyzing several parameters, which are tested before and after...

We analyzed the horizontal distribution, vertical distribution and sedimentation process of Cd in Jiaozhou Bay based on investigation data in April, July and October 1985. Results showed that Cd contents were in order of summer > autumn > spring. For spacial scale, the seasonal variations of Cd in surface...

To study whether the hybridizing could promote the growth of F1 hybrids of vegetables under heavy metal stress, a pot experiment was carried out to investigate the effects of reciprocal hybridizing on growth of F1 hybrids of two genotypes of Brassica juncea var. megarrhiza under cadmium (Cd) stress....

Experiments on four steel-concrete composite beams under negative bending were carried out in this paper. The effects of three factors such as bending moment ratio between two ends of a beam, height-to-thickness ratio of web, lateral slenderness ratio of compressive flanges on the bending bearing capacity...

Abstract. The mechanical engineering problems today become more and more complex particularly in the area of new product development. Mechanical product design is usually performed simply taking into consideration system functions and structures, while users’ behaviours in terms of using the system are...

The unsteady flowing property is complicated in stirred tank, so Computational Fluid Dynamics (CFD) is used to simulate the three - dimensional flow in this paper. Taking the steady-state solution as the initial condition of the large eddy simulation, flows in stirred tank are analyzed at different time....

Tulou, the earthen building, is the world cultural heritage. It is famous for its various shapes and structures. However, opinions are different about its concept and classification. Tulou in Najing of Fujian Province will be divided into three types in the thesis, that is, round, square and deviant...

An algorithm based on SIFT feature detection method(Scale Invariant and Feature Transform) and using conversion step of the circular area selection feature points described are introduced into image feature detecting and matching for better real time performance and higher precision.Improved SIFT features...

To improve the orbit determination precision of the TT&C equipment, the equipment parameters need to calibrate accurately using the calibration tower during the dock calibration. Through comparing the remote control mode and analyzing the control object, this paper builds the wireless communication environment...

This paper designs smart home electricity management system based on power line carrier communication. Firstly, the paper makes the ARM Cortex-M3 as a central controller and ports the uC/OS-II operating system on the ARM, then designs Web Serve program to mornitor and control equipment remotely using...

With the rapid development of urban transportation in China, public transportation has also become an important way for people to travel. Having a good travel condition has been more and more necessary for the public .How to optimize public transport has become an important issue that we now need to...

According to the test results, the flotation process parameters of refractory zinc oxide ore will be optimized by the response surface methodology in this paper. The regression model between Zn recovery and sodium sulfide concentration, depressant(F1) concentration and sodium carbonate concentration...

The reservoir landslide stability is closely related to the fluctuation of reservoir level. The main influence factors are fluctuation rate and permeability of landslides. The landslide was chosen as the research object in the three gorges reservoir area, and studied the changing characteristics of stability...

The flight performance of four-rotor unmanned helicopter depends largely on the flight control system, the flight control system was mainly consisted of attitude algorithm and controller. During design time, firstly, in order to real-time update for the quaternion , we fused the data of gyroscope accelerometer...

In order to ensure the FGD (Flue Gas Desulfurization) system security and reliability, part of the wastewater should be discharge from the FGD system. Desulfurization wastewater with high salinity, high corrosion and other characteristics will lead to water pollution and waste of resources,and it is...

The INS/VNS integrated navigation is an important autonomous navigation method for lunar rovers. The INS/VNS models usually utilize the relative motion differences between the inertial and the vision as measurements. Traditional INS/VNS models make an approximation between definitions of the inertial...

Three types of local plants (canna, calamus, umbrella,)were chosen to construct ecological floating-beds for contamination control atshiyanbaierhe. Differences in plant growth and the capacity of sewage treatment were compared. Results showed that three plants can uptake the nitrogen, phosphorus and...

In order to meet the structural and functional requirements of simulation laboratory for power grid planning study for application data processing, a set of application data subsystems for the simulation laboratory of power grid planning study is designed according to the actual demand of grid planning...

Precision machining technology, a key technology in modern manufacturing, is widely used in the defense industry, high-tech industry, aerospace and other fields. The advanced cutting tool is an indispensable factor in achieving precision machining technology. And the study on superhard cutting tool with...

This paper determines the best strategy for people who have a hot bath by analyzing the temporal and spatial variation of the bathtub water. In order to achieve the purpose of saving water, the key research object of the model is the water flow rate from the faucet. Finally, according to the actual situation,...

Network traffic abnormal directly reflects the health status of the network and real time detection of network traffic abnormal is very important. Hereby a method of network traffic abnormal detection method based on ensemble empirical mode decomposition (EEMD) was proposed. The historical network traffic...

PSO algorithm is a kind of swarm intelligence optimization algorithm which has the advantages of simple principle, easy implementation, few parameters needed to adjust and so on. However, the search accuracy of the basic PSO algorithm still needs to be improved. In this paper, a modified PSO algorithm...

Significant development is being encouraged in “wind curtailment” problem for wind energy. To find a reasonable and economical solution to this problem, a quantitative analysis method has been conducted using cost benefit analysis model to obtain the optimal operation point and the critical operation...

This paper elaborate the application of MAPLE in the calculation of the influence line of the plane statically determinate truss, accurate calculation of the axial force of a plane statically determinate truss by symbolic computation in MAPLE, that we can get the influence value by axial force to plot...

A kind of green compound corrosion inhibitor has been made from sodium molybdate, benzotriazole, calcium gluconate, sodium polyphosphate and zinc sulfate. The inhibition capability of the corrosion inhibitor in seawater for carbon steel is carried out by weight-loss method and electrochemical method....

this paper provides the process for finding roots of nonlinear equations, and gives four root finding iterative methods, which are respectively the bisection method, Newton method, interpolation method and Aitken iteration method giving their solving algorithms and using an instance of f(x)=x3-3x+1 to...

In the design of advanced aircraft turbofan engine, applying the continuous fiber reinforced metal matrix composites(MMC), which have excellent properties of good mechanics, resistance to high temperatures and light mass, to manufacture some of the key components is the effective way to realize thrust...

As a kind of smart material, Shape memory alloy spring has multiple uses, especially as a good potential for solving vibration isolation problem. In this paper, a phenomenological model for describing pseudo-elasticity of shape memory alloy (SMA) spring has been developed. The differential hysteresis...

Taking the static pressure of the oil film, carrying capacity and stiffness of the table as the main study subjects, in order to achieve the optimum design of oil film thickness, optimization method of the objective function with the linear weighting has been proposed, and the optimum oil film thickness...

To study the effects of intercropping on nutrient absorption of plants under cadmium (Cd) stress, a pot experiment was conducted to study the effects of intercropping with four Bidens species (Bidens bipinnata, Bidens pilosa, Bidens parviflora and Bidens biternata) on the nitrogen (N), phosphorus (P)...

A particle suspension transport method was proposed based on ultrasonic composite field. Firstly,the array focusing model and accumulated force equation were established based on phased array ultrasonic cells delay, then integrated with the standing wave ultrasonic field radiation force calculation method,...

With the development of multimedia and Internet technology, content-based image retrieval (CBIR) systems have been widely used. However, how to automatically detect and target images in an image database still remains challenging. Since the HSV color space is more benefiting with human visual perception...

Oriented at the actual application demands of the remote control with the information security equipment, this paper proposed an information security equipment structure supporting remote control, the workflow and the functional structure of the equipment module are introduced. The structure is compatible...

Unsteady flow and the interface distribution in the stirred tank are studied by the large eddy simulation and multiphase flow model. The result shows that the two-phase interface starts from the paddle. Finally inverted cone interface is generated by the screw move. With mixing time passing by, the interface...

Earthquakes are among the most devastating natural disasters, causing significant loss of life and property. The development of precise seismic monitoring instruments, such as seismic collection stations, is crucial for early earthquake detection and warning systems. These stations, based on IoT technology,...

Synchrotron radiation X-ray absorptionmeasurements wereperformed to study the structure of Si-doped n-type GaN layers grown on sapphire by metalorganic chemical vapor deposition (MOCVD) and undoped GaN epitaxial layers grown on Si by molecular beam epitaxy (MBE).It was found that the anisotropic characteristic...

On the basis of deep analysis and conclusions of the research status and practical work of educational circles, this paper starts study with the guidance of such theories as information resource sharing, information appreciation, information flow model, information construction and risk management. According...

Traveling Salesman Problem (TSP) is a well-known NP-hard combinatorial optimization problem. The Particle Swarm Optimization has been proven to succeed in lots of problems, but the PSO algorithm is challenging due to a variety of factors such as easy to fall into local optimal solution and the convergence...

The channel equalization technology is one of the key technologies to improve the quality of communication. It has a vital role to improve overall system performance. In order to overcome the inter symbol interference caused by the channel characteristics of the time-varying and multipath propagation,...

Based on investigation data on petroleum hydro-carbon (PHC) in April, July and October 1985 in Jiaozhou Bay, we analyzed the content, pollution level and diffusion of PHC. Results showed that PHC contents were ranging from 0.010-0.124 mg L-1, indicating that this bay had been moderate polluted by PHC,...

The microstructures and mechanical properties of Mg-Gd-Y-Sr-Zr alloy was investigated by means of optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and tensile tests. The as-cast alloy contains a microstructure consisting of -Mg matrix, Mg5Gd phase, Mg24Y5 phase and Mg17Sr2....

Based on the experimental research and numerical calculation of the Contra-Rotating Wind Turbine (CRWT) by using the technique of the aero-engine and propeller, the effect of the tip speed ratio of the rear stage on the performance of the contra-rotating wind turbine is studied by using numerical simulation...

This paper introduces the realization of correlation power analysis attack to decrypt the encryption equipment for AES encryption system. On the basis of analysis power leakage principle power models and data correlation to build the power information collection and data processing platform. Introducing...

With rapid development of power grid, the accurate and centralized analysis are characteristic of the future dispatching trend in power grid, all information of dispatching system at all level need to be shared. The demand for optimization operation of dispatching data network is more and more urgent....