In this paper, the resonance of open ring frequency selective surface arrays is studied in particular. The new resonant cells are greatly reduced in dimensions and very compact in structures, so it is possible to realize the lower frequency selective surface. Simulation and measurement are basically...

In the present study, an axis-symmetric electro-thermo-mechanical model has been developed to analyze a deformation process by continuous resistance heating. The influences of the contact resistance, the current intensity and the die geometry on the temperature distribution were investigated, and the...

Influence of voltage on material removal rate, surface roughness and power consumption were experimentally studied in this paper. Different polishing states were analyzed from standpoint of electricity transition on the basis of the polishing mechanism. The reason that material removal rate, surface...

The narrow particle size distribution of poly (vinyl silicone) microspheres were prepared by the hydrolysis-polycondensation method with vinyl silane (VTMS) as raw materials. And the influences of pH value, oil/water ratio on the morphology, particle size and distribution of the microspheres were studied....

In order to involve problems of the pressure relay when using, this paper proposed an improved design of pressure relay based on mechanical pressure gauge. Firstly, the structure of the pressure relay and the existed problems when using were analyzed. Secondly, based on the mechanical pressure gauge's...

Parasitoid fly Ormia Ochracea has a remarkable ability to detect the direction of incident sound stimulus via its unique acoustic sensory organs. Based on the anatomy of them, a bionics acoustic sensing device is designed to mimic the localization function of the ears of the parasitoid fly Ormia ochracea....

Based on the actual production data from 3200m3(the effective furnace volume) blast furnace ;a model of blast furnace blast system was established with the software FLUENT. According to improve of blast furnace operation, the influence of the operation at the tuyere level to the distribution of blast...

This automatic intelligent rice cooker is designed on the base of STM32.It consists of automatic rice supply, rice washing and cooking functions, which can be realized, in the long distance, by sending messages, using smart phone apps, Bluetooth or other remote control devices.[1]In the meantime, the...

Fuzzy factors in the helical gear reducer design are analyzed, and a multi-objective optimization model with minimum volume and maximum bearing capacity is established in this paper. For multi-objectives, single-objective optimal solutions are fuzzified to form fuzzy sets to establish the membership...

In order for the robot to adapt to deformations in typed steel processing, an off-line compensation method for programming and control of robotic pathway is introduced. By installing a laser sensor on the end of robot manipulator, the geometric shapes and positions of work-piece are measured prior to...

Loader Boom Frame is a welding part welded by two long boom plates and cylindroid beam. As condition of loading changes frequently, the beam is the most seriously destructed. Up to now, the analysis of the failure for loader operating device is mainly aimed at the weld fatigue. This paper verified the...

An emergency escape ladder which is applied in emergency, for rescue and escaping is designed in this paper to meet the urge needs in modern society. As the major bearing part of the whole ladder, the ladder assembly's rigidity and strength determines the safety and reliable running of the ladder. This...

By means of 4 groups 10 m single-filled sand pipe models with the same permeability and 5 groups of double-filling sand pipe models with 10 m average 5 permeability difference of 1.00, 1.85, 2.80, 3.65 and 4.29, The optimal alternation ratio of carbon dioxide-steam flooding after steam flooding and the...

Reverse engineering (RE) is widely used on the aspects about designing of advanced products, software or images. The 3D Geometric modeling method is composed of measurement equipment and RE software. The three-dimensional digital measurement equipment is used to collect the model's point cloud data and...

Particle impact drilling is a kind of rock breaking method, that high speed metal particles and fluid were given priority to be used to jointly break rock, and mechanical drill bits were supplemented. It is an effective means to solve the hard and abrasion-resistant drilling problems in deep and ultra-deep...

Driving fatigue and even arm numbness can be caused by steering wheel jitters with engine idling. Objective measurement and subjective evaluation are applied of the analysis on the influencing factor of steering wheel jitter in two conditions, engine idling with air conditioning on and off. The prior...

UHV equipment charged instructions plays a very important role for the maintenance of workers' personal safety. Low-voltage side usually use the electroscope, but there is no appropriate electroscope for the high-voltage side. As the voltage increases, the greater the safety distance is required, the...

Starch/lactic acid graft copolymer was attempted in situ grafting reaction of lactic grafting starch via the catalysis of hydrochloric acid. The graft copolymers of Starch and PLA had been synthesized and characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction(XRD), and scanning...

The paper analyzes two kinds of driving mode of piezoelectric injectors ccording to the characteristics of the piezoelectric actuator, then compares the advantages and disadvantages of the fixed duty cycle PWM switching type, variable duty cycle PWM switching and driver-based adaptive current PWM switching...

Microstructural changes of 10CrNi3MoV marine steel before and after hot forming were detected by testing devices such as X-ray diffractometer, the formation causes and law of gradually changing surface microstructure of hot-formed material and those of the interior martensite structure were analyzed....

AC-25 asphalt mixture are designed by referencing the orthogonal design method, the freeze-thaw cycle rutting test are carried out, the related model of the fractal dimension and the water stability evaluation index including freeze-thaw cycle dynamic stability ratio is established by using fractal theory....

In this paper, a boundary control-based algorithm Binary Quantum Particle Swarm Optimization (BQPSO) that considers quantum particle swarm with Delta potential well was used to determine otsu threshold. In the optimization, particles moved in the Delta potential well with the best position POPSIZE as...

In this paper, we use four classification algorithms like C4.5, naive bayes, logistic regression and K nearest neighbor. It outlines basic principles of classification algorithms and we analysis and summary each algorithm has its advantages, disadvantages through performance comparison on different datasets.

Submerged arc welding and double torch automatic welding were used in the girth welding of X65 pipeline steel for two-joint-one prefabrication and principal line welding, respectively. The crack tip opening displacement (CTOD) tests of the welded joints were conducted at minus 10 degrees Celsius. The...

The idea of partitioning the flow has been widely used by hydraulic researchers and engineers. Currently, researchers claim that their models for the division lines are valid and yield good agreement with the experimental data from a channel flow that has a flat bed. It is not clear whether their models...

Thermal magnetic behavior and microstructure of Fe73.5Cu1Nb3Si13.5B9 ribbon annealed at different temperatures were investigated. It was indicated that the onset crystallization temperature of the ribbon was around at 530 oC and its Curie temperature can be enhanced from 320 oC to 385 oC by annealing....

The theoretical studies on the relationship between the structure and properties of polymeric nano-composite (PNC) were reviewed in this paper. Some mechanical properties of the PNC by calculation and simulation technology in recent years were also analyzed. The theoretical study results showed the efficiency...

In this paper, the working principle, basic composition and key technologies of mining nuclear belt scale are briefly introduced. The error of measurement is analyzed emphatically, moreover, propose measures to solve or reduce the error. Through the establishment of mining nuclear belt scale error expression...

Using CaCl2 as sintering aid, the Tb-doped (Ba0.859 Ca0.141) (Zr0.106 Ti0.894) O3 (BCZT) ceramics were fabricated by conventional solid-state reaction method. The sintering temperature of ceramics decreases from about 1450 down to about 1300 . The SEM micrographs show that all ceramics sintered above...

In order to improve the seismic performance of structures, a crossing-pipeline model is established and the dynamic characteristics and seismic response are analyzed as well by adopting ANSYS finite element analysis and taking the practical pipeline project as an example. All of the research is based...

There is a long history of mounting traditional Chinese Calligraphy and Painting. The mounting technology became more and more skilled and impeccable after the developed in Song, Yuan, Ming and Qing dynasty. The production of silk material--brocade, kesi, damask silk and silk tabby mounting for Chinese...

The Cauchy problem of Helmholtz equation is severely ill-posed problem. In this paper, we consider the Cauchy problem for the Helmholtz equation where the Cauchy data is given at and the solution is sought in the interval . A semi-discrete difference schemes together with a choice of regularization parameter...

The cemented carbide cutting tools were experimentally performed to dry cut high manganese steel (ZG Mn13) at high speed, and the high-speed cutting behaviors and the effect of cutting parameters on cutting quality were investigated, and predict model of surface roughness for high-speed cutting was established....

Based on the rock properties and performance parameters of given rock driller, the drilling speed predicted by the theoretical analysis, to establish the direct relationship between drilling speed and the former, the calculation results of drilling speed are given. Accordingly, the manufacturer may be...

To provide reference and according for further coating optimization, shorting process cycle and raising project benefit , the influence of curing agent content on the viscosity, applied time, hardness, combining power, drying time and corrosion resistance of the stainless steel flakes epoxy intermediate...

In order to do further study of newly amended Chengshan Jiao Routeing system, it's necessary to conduct a post evaluation. Based on the result of questionnaires, this paper collected and quantified crew's and maritime experts' assessments on the Chengshan Jiao Routeing system's safety indexes and then...

Shenzhen University City Sports Center was composed of three parts: stadium, gymnasium, and natatorium. It took advantage of new technology and modern structure, such as reticulated shell and cable-stayed grid structure. It created light and characteristic architecture profile, and showed beauty of structure....

In this paper, a novel prewitt edges operator information in spatial domain is employed as one type of feature to motivate pulse coupled neural networks (PCNN) is proposed, according to humans are often sensitive to edges and directional features. Furthermore, blocked edges information measurement is...

This paper adopts rapid hardening sulphoaluminate cement compound Portland cement, silica fume and method of adding additives such as boric acid, through the experimental study of late properties of sulphoaluminate cement based composite cementitious material, the hydration product analysis and analysis...

With the rapid development of nano materials, it becomes a new material science. Aiming at the application of nano materials in concrete, this paper briefly introduces the nano material and analysis the mechanism of the effects of nano materials on the properties of concrete. Meanwhile, the research...

Near infrared spectroscopy (NIRS) was investigated for measurement of diesel cetane. Three types of pretreatments including standard normal variate (SNV), multiplicative scattering correction (MSC) and Savitzky-Golay smoothing combining first derivative were adopted to eliminate the system noises and...

The killing effect of sodium hypochlorite and benzalkonium bromide and the compatibility of them with the scale and corrosion inhibitor in the seawater is studied in the paper. The research result shows that sodium hypochlorite and benzalkonium bromide have good killing effect, sodium hypochlorite or...

The application of biocides in the seawater cooling system and their killing effect in the laboratory is studied in the paper. The research result shows that sodium hypochlorite and benzalkonium bromide have good killing effect, the killing effect of sodium hypochlorite with 4mg/L and benzalkonium bromide...

We used the CASTEP program to build seven configurations of cubic CsSnI3 with cation vacancy at the A or B sites. The physical properties including geometric structure, electronic structure, states density and optical absorption properties has been calculated successfully by the generalized gradient...

The [50(Ba0.7Ca0.3)TiO3]-50[Ba(Zr0.2Ti0.8)O3] + xmol% Y2O3 lead-free ceramics(x=0,0.2,0.4,0.6,0.8 and 1.0) were fabricated successfully by the traditional solid-state reaction. And the microstructures, phase structure, ferroelectric and piezoelectric properties were investigated for the Y2O3-modified...

With the Internet emergence in the recent decade, not only is the E-commerce promoted, but also cyber crime is posed accordingly. Due to the properties of anonymity, no boundary, and fast propagation on Internet world, it is more difficult for the law enforcement members to seize the suspects who engage...

Chemical vapor deposition (CVD) method is employed in the present paper to grow patterned Aluminium nitride (AlN) nanowire array. The AlN nanoarray is grown on Si substrate through patterned polystyrene spheres (PS) colloid template. The microstructure of AlN nanoarray is investigated by SEM, XRD and...

For the irregularity of the road caused by vehicle bridge coupling vibration has always been a research focus in the engineering, and simulated bridge deck roughness of many kinds of methods. The introduction of white noise, the concept of reproduction of bridge deck roughness, based on vehicle bridge...

In hope that the ancient traditional tea dyeing which borders on dyeing away could thrive again with the revival of traditional Chinese culture and handicraft, the writer has done a lot of researches into and experiments on tea dyeing and the application of the theories concerned. A rational exploitation...

In light of complex topography in southern mountain area, a small chained deep-ploughing machine with crawler was developed. Its key part was a chained deep-ploughing device, whose service life could be impacted by vibration frequency as well as strength and rigidity of the material used. This paper...

In recent years, there are many reports about the flood disaster. These reports reflect the lag of the early warning system of hydrological safety in our country, and it is an urgent need to establish the flood disaster safety early warning system of hydrological in these areas . In order to quickly...

In this work, silk fibroin/carbamate blend films are fabricated in different ratios to improve the appropriate properties required for corneal stroma cell regeneration on the films. The structure of the films, the moisture content, protein dissolution loss rate, mechanical properties and light transmittance...

A new early streamer emission (ESE) lightning air terminal system is designed, fabricated. By comparing the arrested artificial lightning numbers of ESE and traditional Franklin terminals in laboratory, the effectiveness of ESE arrester is validated. A Tesla Coil with controlled triggering function generator...

Application of information technology in education is an inevitable trend of modern medical education. On the base of the characteristics and knowledge structure of urinary, we analyze information alization of urology education on the aspects of classroom teaching and network teaching. Through the application...

The effect of information technology for promotion of education reform is obvious. The application of modern education technology into clinical medical education has become an inevitable trend. On the base of an auxiliary digital teaching platform, information management of clinical practice course can...

The cemented carbide coating micro groove turning tool and original turning tool are arranged to cut the same oil country tubular goods (OCTG) 40CrMnMo. By the combination of cutting experiment theoretical analysis, this paper focuses on the radial distribution of residual stress of machined surfaces...

An improved maximum entropy method is proposed to detect the error for intelligent distribution terminal. Firstly, a constraint maximum entropy function of the measurement error is established by introducing the uncertainty of the detected data in the intelligent distribution terminal. Besides, the Lagrange...

This paper Taking Fuzhou to Yinchuan expressway of Jiujiang Changjiang river highway bridge as an example, on the basis of the engineering general situation, the highway, water and soil conservation facilities acceptance technology assessment process was discussed, the content and methods of evaluation...

The movement characteristics and process cost of 4 intermittent motion mechanisms including ratchet mechanism, geneva wheel mechanism, cam mechanism and intermittent gear mechanism are comparatively analysed . According to the working principle of geneva, the parametric design and motion analysis are...

This paper introduces the application of dynamic milling technology in the mastercam software, and makes a further study on the processing technology of aluminum alloy workpiece. With the development of the industry, Aluminum alloy is in widely application in various fields, but due to its rigidity of...

We employ two approaches to model a 3D arm. In nonlinear, a parameter-dependent structure has been derived. Due to an existing inverse inertia term in the motion equation, a proof of nonsingular inertia is given. In linear, the Simmechanic Visual plot is obtained. By implementing a position control law,...

In this paper, according to the internal structure of the boost pressure limiting valve, the actual working characteristics of the boost pressure limiting valve is analyzed, and the key factors affecting the work curve and cut-off point of the boost pressure limiting valve are summarized, then experiments...

This article had briefly introduced the structural characteristics of aluminum honeycomb sandwich panel and its application in some field firstly. The Low-velocity impact resistance of aluminum honeycomb sandwich panels under variable parameters was studied. The influence of structural parameters, such...

Based on the velocities of waves near the surface in concrete, the propagation path and travel time of different waves were calculated, and the influence of crack on these waves was analyzed. Some theoretical conclusions were verified by FEM. The ultrasonic waves were received by array transducers and...

Ferris wheel structure with 36m diameter and 40 m tall is analyzed with Finite Element method by using ABAQUS software in different work conditions. The finite element analysis model of Ferris wheel supporting frame is established, and the force state of the ferrule supporting frame is analyzed. The...

The truss is a key part of a Ferris wheel system and affects the safety of the entire Ferris wheel system directly. This paper proposes an analytical method based on failure modes, effects, and criticality analysis (FMECA) and a fuzzy evaluation method for evaluating the risk level of the trusses of...

Installing guy wire is an effective strengthening method to improve the wind resistance of distribution power lines. A numerical study on the guy-wire-strengthened method to 10kV distribution lines with finite element method (FEM) is presented in this paper. Firstly, a 3D FEM model of a standard section...

To the characteristics of the large delay and uncertainty of superheated temperature, a new cascade control system is presented based on control's history. Based on the analysis of the control objects'dynamic characteristics, historical control information(substituting for the deviation change rate)is...

The paper reviews on the carbon reduction theory in Chinese steel industry and introduces three calculation methods of carbon footprint. Provincial Guidelines for Greenhouse Gas Inventories and Accounting Methods and Reporting Guidelines for Greenhouse Gas Emissions in Chinese Steel Producers are calculation...

Using information to realize manual equipment repair service can improve the efficiency of equipment maintenance, and master the latest information of operating status of equipment timely, and be propitious to statistics and archive information. Therefore, this paper proposes an equipment failuer repair...

The surface texture of aggregates has an important influence on the amount of aggregate adsorbed asphalt and the adhesion properties between asphalt and aggregates . The purpose of this paper is to select appropriate methods to characterize and measure the surface characteristics of aggregates. To this...

This paper introduced tilting accident phenomenon of the farm grasping grass machine in the practical application. Through to analyze overturn accident of instantaneous critical stress state at work, this paper put forward a basic idea that can control and prevent the overturn accident, designed the...

In this work, a modified hydrothermal method has been developed and employed for synthesis of few layers Tungsten disulfide-nanosheets(WS2-NS). Using of sodium cholate as a surfactant and changing in raw materials were the main changes which were applied in the modified method with respect to the orginal...

In recent years, two-dimensional layered nanomaterials have attracted wide attention due to their unique physical, chemical, electronic and mechanical properties. Among them, ultrathin molybdenum disulfide nanosheets (MoS2-NS) are one of the important two-dimensional nano-functional materials. In this...

Considering the size effect, temperature effect and hardening effect of the material in the shear zone, the shear strain and the shear strain rate of the material in the shear zone are studied by theoretical calculation and experimental study. Hydrostatic stress and shearing flow stress with the cutting...

Four models of Concealed multi-ribbed frame thermal insulation walls are manufactured at 1 /2 scale and then tested under eccentric load. The wall's failure processes is described. Cooperative working action, failure modes and bearing capability are analyzed to obtain the bearing capability calculation...

Based on the Finite Volume Method (FVM), the impact on a rigid plate by a free falling liquid body is investigated in this paper. The Volume of Fluid (VOF) technique is used to track the free surface. Based on the proposed technique, the impact of a free falling liquid body is simulated, and the effects...

This paper presents an two-dimensional numerical model for incompressible multiphase flow. The Navier-Stokes equations are discretised by the finite volume method. IDEAL algorithm is implemented for solving the Navier-Stokes equations. PLIC-VOF method is used to track the free surface. The validity of...

Shear angle is an important parameter to study cutting deformation. This paper uses orthogonal cutting force test to obtain the tangential force and normal force in order to investigate the average friction coefficient on the rake face in machining super alloy GH4169. With high temperature Split-Hopkinson...

This paper analyses the needs of task distribution for dynamic enterprise alliance, and then proposes a fuzzy algorithm which gathers the tasks from enterprise to subprojects in alliance It assigns values to the degrees of interactions of the task modules, and creates each adjacency matrix. It then performs...

As new structural composites, X-cor sandwich effectively improves the mechanical properties of the foam sandwich in thickness direction due to its high specific strength and specific stiffness. In this article, by introducing the correction coefficient, the modified calculation model of X-cor sandwich's...

This paper, based on the incomplete information game theory, analyzes the direct bilateral bidding transactions between electric power generator and electric power consumer. Then, we analyze the existence of the Bayesian Nash equilibrium solutions. The analysis result manifests that it is of obvious...

Based on the local annealing process with induction heating for the A286 alloy sleeve of the blind bolt, a mathematical model is built to analyze electromagnetic-thermal coupling. Influence factors, such as frequency and current, are investigated and analyzed using finite element method on temperature...

Proponents of building information modeling (BIM) enthusiastically tout as one of its advantages its ability to work in conjunction with other software programs to predict the performance of buildings. Theoretically this would help in the scheduling process of buildings. This paper summarized the method...

It was to explore the effect of chitosan oligosaccharide on relieving constipation and defecating feces excretion. Chitosan oligosaccharide were administered by oral 2.0 g/kg, 1.0 g/kg, 0.5 g/kg BW dose to mice for 7 d, then detected the propulsive rate of intestines, first defecation time, feces particle...

The influence of different magnesium content on the inclusions in steel was studied under the condition of the same molten steel at 1873 K. The results show that, after the magnesium treatment, the tiny MgO•Al2O3 inclusions could become the nucleus of MnS in solidification of liquid steel, which weakens...

The products of intelligent design are rapidly growing in popularity around the world and are having increasing impact on humans' life styles. The application of intelligent materials, the basis of intelligent products in intelligent product design, is a current research hot spot. This paper, based on...

The exploration of intelligent furniture with its application is bound to cultivate a new economic growth point in China's furniture industry. When making possible a deep-level interaction between furniture and its users, intelligent furniture propels the innovation of furniture design. This allows furniture...

Shield tunneling machine is a kind of large-scale high-tech construction equipment specialized for the underground tunneling. Traditional shield tunneling machine with the circular-section has problems such as low utilization ratio of cross-section, waste of space and so on. In this paper, we present...

In order to solve the problem that the tip of the capillary after stretch is blocked, we need to deal with the tip to make the fracture occurs on the tip. A model is established to analyze the Mises stress in the capillary under the displacement load. Two bodies are assembled to apply displacement load...

The Cu-MoS2/Cu functional gradient materials were prepared by powder metallurgy method. The effects of MoS2 content on the microstructure, phase composition and wear performance were analyzed comprehensively. Solid-solid phase reaction occurred between MoS2 and Cu in the sintering process. The products...

In this paper, numerical simulation based on Reynolds-averaged Navier-Stokes (RANS) equation and SST turbulence model is performed to investigate the hydrodynamic performance of Contra rotating propeller (CRP). The whole computation domain is divided into three sub-domains, which include the two rotating...

Electronic and information technology's progress and promote inevitably cause related industries' technology innovation. To master and develop of advanced technology and methods is a powerful guarantee that enterprises can seize the initiative in an increasingly competitive global market. As one of the...

In order to reduce fuel consumption and vehicle exhaust emissions, it is necessary to develop new designs, such as flow control using jet actuators, to reduce vehicle aerodynamic drag. A numerical model was developed based on the process of airflow passed through a micro-jet actuator. Under different...

It has been proven to be an effective method for reducing the friction and wear of two contact surfaces by introducing a hydrodynamic lubrication mechanism. A linear trapezoidal groove was proposed to accommodate the bidirectional rotation of the planetary gear. Cavitation and fluid rotation centrifugal...

We use the finite element software ANSYS to verify the explosion experiment about whether the projectile shell contains brittle zone, and the brittle with different width and depth to improve the fragmentation rate and lethality of shell material about 50SiMnVB. The simulation results show that the shell...

This paper investigates short-run dynamic interactions between real estate investment trust (REIT) index and stock market index in Taiwan over the 2006-2015 periods. In addition to traditional linear analysis, the recently developed models are applied to explore the possible short-run non-linear linkage...

In order to solve the fault diagnosis of aircraft power starting system, the fault diagnosis method through constructing binary tree SVM (support vector machines) is researched in this paper. Consider that the components which have high fault rate have priority to be isolated, the method trains the classifier...

A master-slave system consisting of a hydraulic Stewart mechanism is developed. This system can be used for grinding complex curved surfaces while keeping the operator away from the harmful dust produced. to prevent the upper platform from moving in the wrong direction because of the limitations of the...

A hardware in loop (HIL) simulation platform for a hydraulic Stewart master-slave system used for curved surface grinding work is developed. The communication between hydraulic Stewart force feedback joystick and the computer is realized by AD/DA card, which was used to improve and evaluate the performance...