Advances in Engineering Research

The diameter and spacing of 150 m, 200 m, 300 m stripe array on the surface of 304 steel were prepared by using M-DPSS-50 semiconductor laser device. Then, nitriding treatment on the textured surface was conducted by using well type gas nitriding furnace. The chemical composition, surface morphology...

Jianghan Basin is a typical Mesozoic-Cenozoic salt lake basin of East China, oil and gas reservoir with industrial utilization value was found in the Xingouzui Fm , Xingou Oilfield of this basin, the formation of which is closely related to the dolomite stratigraphy deposited in the salt lake. In order...

Antenna plays an important part in the satellite, the surface precision of which has an impact on its function parameter named gain. This article finds the method of decreasing the surface precision of the antenna by dividing the mesh into diverse formals. And the technique is able to improve the property...

The metering gateway table plays an important role in the electric energy measurement of power grid.The abnormal situation in the field operation will affect the accuracy and reliability of the gateway energy metering.The problems occurred in the operation are mainly related to the particularity of the...

With the development of science and technology, the application of implantable biomedical electronic devices which play an important role in biological research and medical diagnostics becomes increasingly popular[1]. Nowadays wireless energy transfer is one of the most popular research field, it can...

In this paper, by studying the principle of binocular stereo vision 3 d scanning imaging and scanning data splicing method. The author uses the binocular stereo vision method make a 3D scanning for parts and use NURBS curve reconstruction technology for reverse design of parts.

The microstructure and aging precipitated phases of Mg-12Gd-2Y-1Sm-0.5Zr alloy have been studied by micro-analysis XRD and EDS. Through the analysis it is found that the precipitated phases in the alloy contains Mg24Y5, Mg5Gd and Mg41Sm5. The tensile strength peak of Mg-12Gd-2Y-1Sm-0.5Zr alloy appears...

This paper analyzes the characteristics of image processing method based on nonlinear evolution equations, expounds the advantages, mechanism and theoretical basis of nonlinear evolution equations model in image processing algorithm, and uses the method of partial differential equation for image denoising...

A triangular metamaterial structure unit is presented and the effective permittivity and permeability parameters are retrieved from the transmission and reflection data. Simulation results show that the combined unit exhibits left-handed passband in terahertz (THz). Triangular electromagnetic metamaterial...

The Mesozoic sequence framework of the eastern Yihezhuang salient in Jiyang depression, which was a residual basin, was studied in order to improve the success rate of locating hydrocarbon reservoirs. First, through seismic profiles, well logs and cores, complemented with outcrops, totally 5 sequence...

When conventional algorithm mainly constructs CDS from a perspective of CDS scale, network energy balance issue will be neglected, making some nodes of oversize residual energy become dominating ones. Due to ultra-low energy, these dominating nodes will become inactive very soon, impacting network coverage...

Wide band gap hydrogenated amorphous silicon oxide(a-SiOx:H) films were prepared by radio frequency plasma enhanced chemical vapor deposition(RF-PECVD) method. Nitrous oxide(N2O), hydrogen(H2), silane(SiH4) were used as source gases. With the increase of N2O/SiH4 ratio from 0.5 to 2, the optical band...

Fan coal mine as one of the main equipment, electrical power, with 24h operation every day, there is a serious power consumption.Aiming at the problems of cyclone machine adjustment method, the use of 10 kV high-voltage inverter realize remote control, and have achieved good energy saving effect.

In the process of reclaimed rubber producing, the desulfurization is an important link of waste rubber recycling. It is directly affect the quality of the recycling reclaimed rubber. At present, there is no good desulfurization way for industrialization. Therefore, how to carry on the desulphurization...

The existing Cast-in-place reinforced concrete floor slab still has some shortcomings as the cracks caused by shrinkage, temperature difference and settlement of the Cast-in-place concrete are difficult to control, a large amount of on-site wet operation leads to noise and environmental pollution, and...

The electric bicycle has become the main part of non motor vehicles in small and medium-sized cities. Research on the traffic flow characteristic of the electric bicycle has important practical significance. Based on NaSch model, this paper models electric bicycle traffic flow with CA model and improves...

In this study, a series of corrosion tests are performed on 12 sliding pairs under complex marine environment and earthquake. Periodic-salt-spray accelerated corrosion test and wet-and-dry-cycle accelerated corrosion test are used to simulate the splash zone and atmospheric zone for an sliding pair....

Data Flow Analysis is a difficult issue in the domain of fault localization, and many software faults are related to the information of data flow. The dependency between the variants and the define-use chain are discussed in this paper, and trace the impact to the variants in the process of operation....

In order to solve the congestion problem caused by the more strict security check, we developed a mathematical method based on the Petri net model and the queuing theory. First, we get a linear fitting from the A column of data collected according to the queuing theory [1]. And we obtain the distribution...

This study investigates advanced operational amplifier (op-amp) architectures for gain enhancement, focusing on cascode, two-stage, and three-stage configurations in high-performance circuits. The cascode op-amp combines the high gain of common-source amplifiers with the wide bandwidth and low output...

With the increasing height of buildings, the frame-central core tube-outrigger structure system is widely used in super-tall buildings. At the same time, it becomes more and more popular to employ multi-outriggers in taller and super high-rise buildings. However, because of the fact that the vibration...

Mooring system design problem is to determine the anchor chain type, length and weight of the ball to make the buoy of the draft depth and swimming area and the angle of inclination of steel drum as small as possible. In this paper, we proposed the mooring system optimization design by mechanical analysis....

Cutting effect was unconsidered so far for Chaff Corridor (CC) both in theoretic analysis and operational engineering; different position's Blanket Efficiency (BE) of constant chaff-density CC is different as results of radar-lobes cut a chaff volume, which means there are limited chaffs which have jamming...

Auto-cascade refrigeration system using multiple non-azeotropic refrigerants, taking advantage of the difference between the evaporation temperature of high and low boiling point components, applying the single-stage compression, by the way of internal cascade to obtain a larger working temperature range,...

Internal development human resource management system is a system which originated in Japan is considered a high performance human resource management system. A large number of Chinese enterprises, especially the state-owned monopoly enterprise have the typical characteristics of the internal development...

In the past 20 years, numerous in-pipe inspection robots (IPIRs) have been designed and utilized. According to the propulsion mechanism amount, these in-pipe inspection robots (IPIRs) can be summarized into two categories, i.e. single locomotion system and multiple locomotion system. This paper presents...

In order to study the loads and responses for structures impacted by exhausted gas jets, a jet impinging plate is investigated numerically, As well as the computational fluid dynamic method are utilized to simulate the jet flow, the finite element method are imposed to calculate structure responses....

We propose a new approach based on estimating illumination veil. The algorithm for non-uniform illumination of fog image has a good result. Given a degraded image, minimum intensity of RGB components of each point can be figured out as haze energy veil with the proposed guided filter, subtracting the...

The research of this paper can help medical researchers or ordinary people understanding the internal structure of heart and providing anatomic basis for clinicopathologic analysis of heart, heart anatomy teaching, surgical planning and visible simulation surgery of heart. Based on the heart anatomy...

Based on the current situation that the ordnance soldiers are lacking a complete set of professional skill appraisal assessment data, the present on the guarantee difficulty for live-fire training, a new simulation assessment platform was designed and realized in this paper, which included the theory...

In this paper, based on the lattice Boltzmann method (LBM) and the Oldroyd-B model, the decoupled solving method for the incompressible Navier-Stokes equation and advection-diffusion constitutive equation and the boundary processing formats are given. The flow of viscoelastic fluid in the planar 3:1...

The BER performance with consideration of phase fluctuation effect in space optical communication is investigated. When the phase fluctuation effect is considered, BER definitely increase which leads to the worse communication quality. Based on numerical simulation, BER is sensitive to the higher level...

In order to overcome the defect of open-loop detection of micro-gyroscope, based on comb capacitance detection of micro-structure, the working principle of electrostatic force suppressing capacitance comb vibration was analyzed. The Coriolis signal vibration amplitude of micro-gyroscope was extracted;...

Mineral flotation is a complex physical and chemical process that involves solid, liquid and gas phase separation. Many operating variables influence the efficiency of the separation process, and the mutual coupling effects have decisive influence on flotation performance indicators, both from the macro...

A control strategy which is used in hybrid energy storage system is proposed in this paper. This control strategy has combined low pass filter with multi-objective optimization. Besides, the problems of overcharge, over discharge and limitation of maximum power are considered, which has improved the...

This article aim at solving the problem of local optimal solution easily appear in structural optimization by the algorithm of bi-directional evolutionary structural optimization (BESO), and importing improved genetic algorithm (GA), put forward a new algorithm named bi-directional evolutionary structural...

In this paper, thermogravimetric analysis method was studied in biomass thermal conversion analysis. Theoretical simulation and experimental methods indicated the problems existing in the traditional thermogravimetric analyzer (TGA). On this basis, a new thermogravimetric analysis platform was developed....

With the current distribution network automation construction gradually promotion, distribution automation terminal large-scale applied in various regions of the country power grid. In the maintenance of distribution automation terminal operation, many problems was discovered to be widespread, such as...

In this paper, a mathematical model is established to simulate orientation distribution of plant fibers suspensions in ellipsoid extensional force field. Furthermore, the analytical solutions of differential equations on plant fibers orientation can be acquired in complex flow field.

Pretreatment of lignocellulose is a key step in a commercial biorefinery. To increase the cellulose mass fractions and enhance the enzymatic hydrolysis, sugarcane bagasse was pretreated with methods of dilute acid, dilute alkaline and acid coupled alkaline. The efficiency of these three methods is compared....

This paper expounds the characteristics of Gd and Mg-Gd binary alloys, Introduces the mechanism of Gd addition on the heat resistant magnesium alloys. Reviewed the research progress in magnesium alloys containing Gd on mechanical properties at room temperature and high temperature, and prospected their...

The application of Distributed Generation (DG) reduces the consumption of traditional energy, but it also brings certain challenge to relay protection because of its own characteristics. This paper analyzes that the injection or branching current will cause incorrect operation of over current protection....

In order to integrate increasing carbon sequestration of plants into vegetation restoration and reconstruction project in Guizhou karst area, the carbon storage, spatial distribution characteristics and carbon sequestration benefits of five kinds of disposition modes were studied in Karst Peak-Cluster...

This paper analyzes the benefits and limitations of several attendance systems that have been used in universities and describes the design of an Attendance System which combines the attendance recording and dormitory management. The system described in this paper is based on MySQL and featured by synergetic,...

With the increasing voltage classes of electric system, voltage stabling issue brings more and more severe constrains to the entire electric system. A throughout analysis of features and mechanism of voltage instability in electric system has guiding significance in assuring stability of the power grid....

With distribution automation full coverage, terminal debugging and operation and maintenance has become a key factor in practical application. Based on the IEC 61850 standard and IEC 61850-80-1, Information model mapping, combined with the IEC60870-5-104 extension, the scheme of self-discovery, self-registration...

Firstly, the fuzzy comprehensive is made for each risk factor of large-scale water conservancy and hydropower engineering in its life cycle’s each stage, and the fuzzy comprehensive evaluation vector is transformed into fuzzy scores, total risk of ecosystem in different development scale and value of...

The soft soil foundation is widely distributed in our country, with the features of high moisture content, high compressibility, low strength and poor water permeability, among which the geological condition of alternate soft and hard soil layers is also common, and the constructions built on such foundation...

The temperature change in roadbed is a process of dynamic change, is the key factor that influence the performance of subgrade. In order to research the subgrade temperature changes in permafrost regions, based on national highway 219 line Xinjiang-Tibet highway monitoring project, observed the temperature...

A low cost indirect type AC voltage regulating system is proposed to overcome the grid pollution of silicon controlled regulating circuit and the high cost of chopping sine wave regulating circuits. The system consists of full bridge rectifier, filter and full bridge inverter. The bipolar SPWM control...

With the rapid development of society, improve space utilization, modern city high-rise building height are also increasing rapidly, the glass wall clean, damage detection, equipment maintenance and other aspects of the problems keep cropping up. Using robots to replace human tasks not only reduces the...

In today's electrical age, error-prevention control and automatic safety device of biogas engine system is playing an important role in modernized production and life. Based on the conclusion of fuzzy-control algorithm, after making up bugs in the above DC speed regulating device and combining error-prevention...

In this paper, we use the first law of thermodynamics to obtain a differential equation. After comprehensively consider about evaporative heat loss, convection heat loss and radiation heat loss,we develop the model to discuss the temperature of the bathtub water for different time and different flow...

Surface pits in a-plane GaN have long been considered as a result of island coalescence in literature, while pits in c-plane GaN are the surface termination of screw dislocations. It is found in the paper that small surface pits on a-plane GaN also terminate perfect screw dislocations and partial dislocations...

This paper summarizes the current methods for solving micro-channel flows, and the direct simulation Monte Carlo (DSMC) method is used to simulate the Couette flow, which is the most classical gas micro-flow. The results show that the velocity slip is obvious in the transition regimes and the slip velocity...

This paper proposed a new way of crossover and mutation for genetic algorithm to prevent the local optima and guarantee the feasibility of the mutated path. Improving the adaptive adjustment of crossover and mutation probability to improve the search efficiency of the algorithm optimization. Contrary...

In order to reduce far-end crosstalk between LTCC microstrip lines, this paper proposes a novel structure that has an air-cavity in dielectric layer. Simulation model of LTCC microstrip lines was set up by using Ansoft HFSS, the far-end crosstalk (S14) was obtained, the effects of cavity height, cavity...

To improve the inclined lane car braking reliability, in this paper, the theoretical analysis of the braking force and the brake parameters of the inclined roadway are carried out, developed a new type of hydraulic track brake device. The device use two levels of the hydraulic cylinder symmetrically...

Molecular dynamics (MD) is a method for computationally evaluating the thermodynamic and transport properties of materials by solving the classical equations of motion at the molecular level. There are many algorithms that can be used to integrate the Newton’s equation of motion in the simulation process....

There are some problems in using and managing the educational resources of colleges and universities, such as uneven distribution of resources, Inconvenient to use, data redundancy, more maintenance personnel and low efficiency. There is often a branch in colleges and universities; there are plenty of...

Hbase combine Hive application platform can analysis of huge amounts of data easily. And querying on multi-join is the bottleneck of restricting the performance. To solve this problem designing a Join Engine between Hbase and Hive. It can read Hbase data and complete multiple table joins and optimization...

This paper points out the problems existing in the existing technology of socket, we design a new type of security socket, this paper introduces the basic structure of new type socket, illustrates the implementation process. Through reforming the socket internal structure, solve the problem of the plug...

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...

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,...