Good personnel hedge scheme which can reduce the negative effects of urban waterlogging disaster is one of the effective ways and scientific means to improve the level of urban municipal management. Strong randomicity is the characteristics of stormwater runoff route under city extreme weather , this...

The incorporation of nano-materials in concrete, its various aspects of the performance have been improved, but also need to further understand the nano-materials to improve the performance of concrete deficiencies. Due to its excellent mechanical properties and durability, nano-concrete is becoming...

Numerical simulation of unsteady airwakes of a simplified frigate model (SFS) was performed with structured grids, third order MUSCL spatial discretization scheme, second order implicit temporal discretization scheme, and LES turbulence model. The results show that velocity fluctuation of SFS airwakes...

Rogowski coil induction voltage is very small, and sometimes only a little or less. After the back of the circuit and other parts of the signal, the signal will almost decay to close to zero, and become very susceptible to external interference and distortion, which resulting in the back of the measurement...

Based on inherent strain theory, it predicts and optimizes welding deformation of movable arm by means of welding numerical simulation. At the same time, based on thermal elastic-plastic theory, it predicts stress distribution, and finite element model is verified correctly by experiments. The results...

In order to solve the low efficiency and low accuracy of manual inspection in the quality of necked-in area in pen point, a program of pen point quality inspection was developed based on machine vision in Halcon platform. Firstly, use the median filter to remove the image noise and enhance the contrast...

The height measurement of exposed ball is one of the most important quality test items in the production of ball pens. The automatic detection method based on machine vision has huge superiority, compared with the traditional manual inspection method. In order to realize automatic measurement of exposed...

A series of a novel class of linear aromatic ether polymers (AEP) containing perfluorocyclobutyl and triazole unites were synthesized by click chemistry and their structures and properties that were characterized by FT-IR, 1H NMR, GPC, TGA, DSC and WAXD. The results showed that these polymers exhibited...

In order to meet high precision and high reliability required for the permanent magnet linear motor servo system, a method that combined sliding tracking mode controller and the H disturbance compensator is proposed. The weighted integral gain sliding mode controller effectively solves the problem of...

Stroke is one of the most important factors in the spectrum of the Chinese population. In the current physical therapy for rehabilitation aftermstroke,neuromuscular electrical stimulation therapy is more important. Stroke is a disease with high disability rate. Rehabilitation of stroke patients with...

Coiled tubing with higher strength and larger diameter is widely used in oil and gas engineering. Local damage generated during its working operation will decrease the fatigue life and strength, but replacement will introduce with extra cost. In order to repair the damaged part with lower cost or obtain...

The pipeline steel X70W submerged-arc welding was simulated by FEM using ANSYS, for the issue that the cracks were frequently found in the base metal when the pipeline steel was expanded holes after welding. And the residual stress was analyzed at three different welding speed through temperature field...

We synthesized an imidazole carboxylic acid-nickel complex, characterized its structure, and transmitted it to P. martensii via dietary algal supplementation. Nacre color was characterized using colorimetry, and its microstructure was observed with scanning electron microscopy (SEM) and atomic force...

Universities consume a large amount of energy resources during personnel training. Construction of conservation-oriented campus is one of the important tasks faced in the development of universities. Taking NCUT (North China University of Technology) for example, this paper proposes sustainable design...

Data cleaning, also called data cleansing or scrubbing, deals with detecting and removing errors and inconsistencies from data in order to improve the quality. Currently the problem is that people hold large amounts of data but do not get any useful knowledge, being described as "data rich but information...

A special-purpose testing device for bearing preload was developed. The relationship between preload and system natural frequency was researched with the test rig. The test data of bearing preload changing with system natural frequency was fitted. The results show that the preload test rig has reflected...

By adopting the single chip computer ATmega16 as the control unit, a frequency counter is designed based on the input capture function of the single chip computer assisted with the appropriate software and hardware resources. This frequency counter can realize real time, high-precision frequency measurement....

The method to analyze the dynamic characteristics of the inter-shaft bearing in the dual rotor system is presented. Under different radial loads, the distributions of minimum oil film thicknesses and contact loads between rollers and raceways are obtained. The results show that the rollers' spinning...

The lapping quality and meshing performance of spiral bevel gear depend highly on the exact control over the lapping position on tooth surface. In this paper, the non-uniform rational B-spline (NURBS) surface is used to fit the real measured tooth surface. Based on the tooth contact analysis (TCA) for...

In order to improve the meshing performance of precision forging cycloid bevel gear, the modified method of gear based on the deviation surface is provided in this paper. On the basis of generating method for pinion with tilted cutter the gear tooth surface is derived according to the fully conjugate...

The application of BF slag depends on the content of amorphous solids in the slag after treatment. The research on the activation energy of crystallization of amorphous solids in BF slag is the foundation to find out the reasonable cooling speed during dry granulation of molten slag. The BF slag of steel...

At present, it is difficult to make a good security evaluation of cloud storage system because of qualitative, quantitative, linear and nonlinear factors, so in this paper, the artificial neural network technology and genetic algorithm(BP-GA) is introduced to evaluate the information risk degree of cloud...

The technologies of wireless sensor networks (WSNs) and mobile agent are applied because of the large and complicated bridge structure, large amounts of sensors and multiple damage forms. The paper takes the actual bridge structure as the research object, adopting CC2530 as the core of wireless sensor...

This research was carried out to investigate the effect of three factors related with cold-pressing technology including pressing temperature, moisture content and shell content on the acid value, moisture and volatile matter content and yield of peanut oil with method of orthogonal experiment of 3 factors...

t is very important for reasonable analysis of complex workflow model based on Petri nets. Based on the four basic models, the complex workflow model is simplified by equivalent layer. According to the equal servicing time formula of series model, parallel model and selection model, calculate the simplified...

As digital information technology is continuously developing and the application of Internet is much wider, the function of simulation system for industrial robot is no longer limited to single simulation. With the introduction of emerging technologies, especially Cloud Manufacturing, the integration...

This paper introduces the effect factors of flood damage of highway upper slope in mountainous areas, predicting model and main points of identification technique. Combining with the application example of north mountainous area by Jizhou District ,shows the method's validity and practicability.

Doppler signals of body movement are measured and collected by using X-band continuous wave radar to extract the human motion characteristics of radar echo. In order to suppress the cross terms more effective and retain the high resolution time frequency resolution, This paper construct a window function...

Fiber optic sensing is a high-tech technology that has been developed since the late 1970s when fiber was successfully used in communications. Once it comes out, to the intrinsically safe explosion-proof, high precision, long-distance transmission, not afraid of corrosion, anti-electromagnetic interference...

Five batches of raw silk were tested in the electronic testing for raw silk on the raw silk electronic detector, meanwhile, the current test of raw silk was done in accordance with GB/T 1797-2008 standard for raw silk, and the correlation between indicators of the electronic testing and the current test...

The as-cast microstructure of niobium-containing slab was observed and characterized by metallographic microscope and scanning electron microscopy. The results show that the as-cast microstructure of the niobium-containing silicon steel slab is ferrite and a small amount of pearlite. There is no obvious...

The shock tower, serving as a critical component of the front car body, plays an important role in the stability and ride comfort of the vehicle. In this study, a lightweight optimal design was obtained based on the original steel structure. Stiffness requirements for optimization process were extracted...

This paper constructs the technology transfer index system of Shaanxi Province, and then establishes vector autoregression between the comprehensive index of technology transfer and the index of the equipment manufacturing industrial structure, finally this paper analyzes the results by combining variance...

It is difficult to meet the requirement of practical ability training goal in package engineering specialty with only traditional didactics focused on theoretic lectures. Thus, we introduced "contest driven" didactics in practical teaching sections such as projects of packaging system design course and...

This paper studies the effect of different microwave power levels, heating time, intermittent time and slice thickness on the drying kinetics of papaya slices. The influence towards the color appearance, the papaya microwave intermittent drying characteristics and the tendency of water loss were obtained....

Homemade batch microwave drying test apparatus using different parameters on fresh-cut alpine yam slices during microwave intermittent drying experiments, the drying characteristics of fresh-cut alpine yam slices, the dynamic model and the drying quality was studied in the paper. The results showed that...

At present, the innovation capacity of Xi'an is still insufficient compared with first-tier cities, and the innovation ability of a city is closely related to University-industry collaboration. Based on this, this paper uses the Analytic Hierarchy Process (AHP) and the fuzzy comprehensive evaluation...

The 3D printing technology for continuous carbon fiber composite can combine the advantages of high mechanical properties and unlimited model structure complexity to complete the rapid prototyping. Because of the continuity characters of the carbon fiber composite, if the nozzle temperature is too high,...

Through theoretical analysis and finite element analysis the effect of the blunt force on the surface deformation is applied to the surface deformation of the fixture and the type surface. It obtains the most suitable for the titanium alloy plate clamping way.

The ever - worsening water pollution has prompted the emergence of a large number of sewage treatment plants; meanwhile, the activated sludge process has been developed rapidly. The species, quantity and the stage of growth of the microorganisms in the sewage treatment by activated sludge process is...

It's likely undetermined case that the observed signal is less than the number of source number, while the FSK signal of track circuit is mixed with a variety of interference signal. The traditional independent component analysis (ICA) cannot separate source signals. The article separate source signals...

Simultaneous removal and recovery of phosphorus (P) from municipal wastewater has been promoted as a global resource strategy. To improve the removal and recovery rate of phosphorus, the integrated role of anaerobic/aerobic cycle duration (TCD) and the empty bed retention time (TEBRT) on phosphorus removal...

Organic light emitting devices (OLED) with the structure of ITO / TPD / Alq3 / ZnO / Al were prepared by vacuum thermal evaporation method. By establishing multi-layer structure model, we discussed the influence of Alq3 deposition thickness and ZnO buffer layer on the photoelectric performance of the...

This paper mainly discusses the imaging features of remote sensing images, as well as the core target detection technology of image application, and uses several traditional image detection algorithms to experiment. The experiment results show, for unspecific targets, the edge detection algorithm based...

Because of the different environment and existing conditions, the damages of structural concrete are different. The typical problems of ocean engineering concrete corrosion, crack, and durability are discussed. The healing materials used in marine engineering, the current development situation of relative...

Aiming at the problem of inaccuracy of Face Recognition and No Object Tracking Ability with the current monitoring system, an intelligent monitoring system design scheme based on ZigBee technology is proposed, and the hardware and software module design of the system is implemented including data acquisition...

This paper is based on the elevator group control system scheduling algorithm research, For the current elevator running in the process of a long time ladder phenomenon analyzes the structural characteristics of the group controlled elevator system, puts forward the structural scheme of the overall design...

Sources of error are took into account while applying high frequency rotation voltage injection method to interior permanent magnet synchronous motor (IPMSM). A new method using the phase difference of two new tracking differentiator (NTD) output signals for solving the initial position of the rotor...

This paper introduces the structure of the double AC motors speed-regulating experimental system and control methods of the system, and describes the application of the STM32 microcontroller hardware module design and programming . With the SVPWM technology, software flow chart based on STM32 MCU are...

As the core element of jet-type servovalve, the linear model of jet-type hydraulic amplifier (JTHA) is important for analyzing and controlling the jet-type servovalve. Based on the function between flow area and the jet nozzle's displacement, the linear model of JTHA is derived from hydraulic bridge's...

In traditional structure, wind turbine pitch control system generally consists of two modules, the logic control unit responsible for the control logic and the servo drive unit responsible for the motor driven. In order to adapt to the integration of the system architecture and simplify complex layout...

With the development of the society and the improvement of the living standard, people are to pursue more clean, healthy and harmonious living environment. And the trash management is one of the important factors. The aim of this paper is to design an intelligent trash bin monitoring system to improve...

In April 2020, Atlantis Press was alerted to fake proceedings articles hosted on our platform. These articles, mostly in computer science and engineering, were generated by the SCIgen computer program and were all published between 2006-2018. Immediately after receiving the alert, Atlantis Press initiated...

In this paper, we present a tri-diagonal parsimonious higher-order multivariate Markov chain model with new convergence condition. (TPHOMMCM-NCC). Moreover, the estimation method of the parameters in TP-HOMMCM is given. Numerical experiments illustrate the effectiveness of TPHOMMCM-NCC.

In recent years, the oil stolen event has occurred, to the safe production of oil wells has brought hidden danger. In the pumping oil wells wellhead anti-theft take in at the middle part of the installation of three detectors, on the Christmas tree install one-way flow meter and other security measures,...

Corrosion of reinforcement is the most common type of deterioration of reinforced concrete structures and bridges. Serious degradation of the mechanical properties of reinforcing bars is because of corrosion. Pitting corrosion is the main form of corrosion. The nonlinear stress–strain behavior of corroded...

This paper reported the characteristics of solids conveying capacity of gas solids pneumatic conveying fly ash in up-extraction fluidized bin system. Up-extraction pneumatic conveying experiment bench was formed based on industrial case. Meanwhile automatic control experimental system which included...

In order to detect the nitrogen content of the rice canopy fast and nondestructively in the cold region, the hyperspectral technique was used to capture the rice canopy spectrum information at the tillering stage. After vegetation index was constructed by the characteristic waveband of high correlation,...

This paper presents a distributed clustering algorithm for large data sets. The algorithm is based on the traditional K-means algorithm to make reasonable improvements, make it more suitable for distributed environment, and analysis algorithm from complexity to compare the algorithm with the traditional...

O-E theodolite is consisted of the subsystems. At present, each subsystem is emplaced separately and connected by cables, which leads to a comparably enormous volume. Therefore, the application of PXI bus technology is optimum that allows inserting every subsystem in a PXI chassis thus largely reduce...

In view of the large scale and scale of data, cloud computing system faces many problems in scalability and high availability. Aiming at the distributed data storage in the cloud computing environment, a recursive positive N-shaped network model is constructed. Based on the data center network structure,...

According to train-bridge system spatial vibration equation and Newmark- stepwise integration method, the dynamic response of the box girder bridge for biaxial rubber-tired Light Rail Transit (LRT) was calculated and analyzed. The dynamic analysis results show that the box girder bridge has a large vertical...

In a distributed system, the storage structure of the data directly affects the storage efficiency and processing performance of big data. In the row storage structure, the data from the local read, loading speed, but the compression efficiency is low and there is data redundancy; in the column storage...

With the rapid development of mobile Internet cloud computing and big data, the data storage requirements, such as pictures, videos, etc., increase dramatically. At present, the existing storage methods can not meet the needs of system storage, and NoSQL distributed big data storage technology because...

In view of the development of greenhouse and greenhouse monitoring system at home and abroad, the traditional manual control mode has been unable to meet the production demand. Now the Internet of Things technology and greenhouse system combined, proposed based on the Android operating system, intelligent...

With the rapid development of small and medium enterprises, cost management has become an important part of enterprise management. As the manufacturing enterprises are always faced with the volatility and uncertainty of the market, thus it puts forward new requirements for the timeliness of the product...

"Internet+" provides new ideas for the development of traditional industry will bring profound influence on industrial production and operation. The "Internet+ animal husbandry" is to integrate new internet technologies in each production links of animal husbandry and finally realize "intelligent" animal...

BIM is used in the cost of fine management, which is significant to improve the construction cost management.Firstly, the main problems in fine management of construction cost are analyzed deeply. Secondly, the application of the BIM model, in the life cycle of cost management, is explored. Finally,...

Many problems in communication and Radar signal processing involve the detection of low signal to noise ratio (SNR) signal in non-Gaussian noise environment. The stochastic resonance of the nonlinear bistable systems driven by binary phase shift keying signal under the alpha stable distributed noise...

In this paper, the communication network system had been studied based on the schemes of efficiency evaluation. The relative assessment system and evaluation system had been designed via fuzzy analytic hierarchy process in terms of the timeliness, stability and security. Furthermore, the efficiency evaluation...

We propose a novel scheme to probabilistically transmit an arbitraryunknown two-qubit quantum state with the help of two partially entangled states. In this scheme, theteleportation with one sender and two receives can be realized when theinformation of non-maximally entangled states is only available...

This paper carried out kinematical analysis for the two-handed backhandmovement of the 2016 ATP Chengdu Tennis Open final men's players Ramos byusing three-dimensional camera analysis, to explore the characteristics of tennis two-handed backhand, hoping to provide the majority of tennis Coaches, athletes...

A image processing virtual simulation platform is designed based on MATLAB GUI. This platform has good interactivity and expansibility, which integrates multiple functional modules including basic function module, noise adding module, image denoising module, feature extraction module, and image mosaic...

PLC technology and touch screen technology is combined together in order to design a marine boiler control system which realizes the remote visual control.Using PLC and EM235 module realizes analog signal control in order and make the control process stable and feasible. The automatic control module...

With the development of the headset VR equipment of consumer-level and the interactive technology of the headset VR, especially the non-contacting gestural recognition technology in machine vision. The headset VR equipment of gestural recognition became the potential research area in the close interaction....

Aiming at the transmission of polarization encoded single photons in turbulent atmosphere, the random turbulence is modeled as atmospheric bubbles with various refractive indexes so as to conceive the propagation process of single photon using geometric optics. The fluctuation of photon transmission...

Linux Virtual Server (LVS) cluster technology is widely applied at high-performance web service. In LVS, Weighted Least-Connection (WLC) scheduling algorithm is usually adopted due to its good effect. However, WLC scheduling algorithm can't always make real server (RS) run efficiently. In order to improve...

In the Internet era, the movie website has become a mainstream platform for movies introduction and comment on the movie resources, annotation also has become a mainstream form of movie resources under the network environment of the new organization based on social tagging.. From the system point of...

To solve the problems of paint waste, poor coating thickness uniformity and low spraying efficiency for outer or inner-horn surface with two patches in the vertical spraying technology, a continuous varied dip-angle spray trajectory planning method is developed. Several problems on the off-line programming...

Rheological properties of poly(vinyl alcohol) (PVA) at various concentrations in aqueous medium were studied. The optimal concentration of PVA to obtain high solid content with low viscosity was determined. Films with different concentrations of PVA in aqueous solution have also been prepared. The influence...

This paper introduces the structure stability of ACSR JL/G1A-630/45-45/7 and low pressure wire DFY- 630/45(90°)-R3.2 passing through the pulley under the condition of 25%RTS and envelope angle of 30 °.The diameter of the pulley is 20 times the diameter of the wire. Simulation analysis was carried out...

According to the characteristics of the logistics, production lines and function of flexsim simulation software, the two important logistics production lines simulation optimization problems was raised, clarifying the optimization methods that is used flexsim simulation software to analyses the logistics...

In this paper, the wind resistance coefficient of low-pressure steel core aluminum wire with different opening angle is measured by wind tunnel test under different wind speed conditions. The results show that when the wind speed is below 35m / s, the wind resistance coefficient of the wires with different...

In this paper, we study a preconditioned Gauss-Seidel iterative method with the preconditioner which proposed in [1] for solving a linear system whose coefficient matrix is a M-matrix. Some corresponding comparison results between the preconditioned Gauss-Seidel iterative method and the basic AOR iterative...

This paper designs a lower limbs rehabilitative robot with compact, functional and widely applied features for patients with lower limbs disorder. This robot is consisting of hip transverse adjustment mechanism, hip and knee joint compound movement mechanism, bed angle adjustment mechanism and pedals....

Palladium nanoparticles (Pd NPs) supported on the surface of SBA-15 nanocomposites were synthesized by a one-step, facile ultrasonic method. The Pd/SBA-15 nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption. The Pd NPs had an...

It simulates boom process chain in bending and welding. It obtains deformation of the plate after bending, and predicts welding deformation of the boom considering bending. At the same time, using Metra SCAN, finite element model is verified correctly by experiments. The results show that it occurs 4.3mm...

For solving supply and demand balance between the parking space of parking lots and the car of the drivers, on the basis of analyzing time series forecasting techniques, the forecasting method using BP neural network algorithm was presented to forecast the parking lots free parking spaces, which was...

Numerical simulation welding process of box structure at different environment temperature, it obtains and tests deformation and stress distribution of ironing plate. The results show that deformation trend is convex on the bottom of U-shaped plate, and deformation is concave in the center of connecting...

Financial information plays a crucial role for future investors to make important decisions, and how to provide true, reliable and accurate financial information becomes a top mission for enterprises. To effectively identify financial fraud information, we first select the relative indicators by reviewing...