Columns in frame-tube structures may be damaged easily because of the torsional response, therefore, torsional displacement ratio was defined by national codes for spectrum analysis under frequent earthquake. For analysis of time-history under expected rare earthquakes, different from displacement angle,...

Both the construction of ecological civilization and the project management are widely concerned by people. This paper’s purpose is to analyze the relationship between project management and ecological civilization construction, and research how to strengthen the construction of ecological technology...

With the help of SHPB apparatus, do the research on the energy transfer rule, strength characteristics and failure pattern of complete mortar testing piece and specimens with 1~3 joints, under the similar impact speed. In addition, regarding the double parallel cracks specimens as an example to explore...

A damage rate dependent constitutive model suitable for penetration calculation is introduced in this paper. The finite element program is applied to simulate the penetration of a projectile into concrete target. The simulation results of residual velocity are in good agreement with the experimental...

In order to solve the problem of false tracking caused by background interference in infrared moving target detection under the port background, a port background suppression method based on multi-level filtering and phase marshalling is proposed. Firstly, a number of benchmark areas and feature line...

We proposed a process to find and recognize four typical eye movement signals hidden in EEGs. Eye movement signals contained in EEG are usually looked as artefacts by doctors. But they can be useful if the movements are intentionally launched for special purpose. Identifying typical eye movements from...

In the case of high dimension and small sample, the feature extraction method using Fisher linear discriminant analysis has a problem of pathological singularity. There are many solutions to this problem, in which LDA/GSVD algorithm overcomes the shortcomings of the existing methods, has a good recognition...

A new electrodeposition-based method was introduced to prepare SnO2 nanoparticles for use in resistive-type gas sensor. Different from most electrodeposition methods, the product formed in electrolyte rather than on the electrode was collected and used. This product was easier to be coated onto a substrate...

A DP-QPSK demodulation device what is based on Multimode Interference(MMI) cascading structure was proposal, This cascading structure does not require other additional production processes, and has good application prospect. The simulated results show that the structure can complete the polarization...

In order to improve the file transfer speed between two smart mobile terminals, the point-to-point (P2P) file transfer system based on near field communication (NFC) is specifically designed and implemented. Using simple NFC data exchange format (NDFT) protocol, the message exchanging is implemented...

The vision-based hand gesture is an important problem in the field of human-computer interaction since hand motion and gesture could potentially interact with computers in more natural ways. This paper is focused on control of mobile service robot based on vision-based hand gesture recognition. The database...

Main business application of big data is used to analyze the specific cases through health data model. Combined with the actual demand and development trend, the main business range of medical applications of large data includes intelligent auxiliary diagnosis, image data analysis, image intelligent...

A large data sharing system of medical information is the base of using information technology to promote the health informatization development in China. The construction of Chinese regional health information platform provides theoretical support and technical solutions. The use of big data and cloud...

The development of medical Internet is fast, so the related laws and regulations fail to keep up with the pace of its development. If a doctor practices online, there is no clear regulation and rules. At the same time, domestic clients haven’t the habit to pay for the medical service from the Internet....

Education informatization is the ultimate goal of educational development. As the most important element of education system, good management of class is the guarantee of high teaching level and quality. The application of information technology in the course of class management, is combining the management...

Aiming at the problem that the traditional attitude measurement cannot meet the requirements of small and unmanned aerial vehicles in industrial and civil areas in terms of weight, volume, and power consumption and so on, a UAV attitude measurement system based on MEMS accelerometer, gyroscope and magnetometer...

In response to the current UAVs need to man-control, poor life, signal transmission distance limitations can not be caused by the application of the UAV for patrolling, this article for the patrol UAV in the life, route planning, communication proposed a certain program, so that UAVs have more powerful...

This work demonstrates the use of the digital speckle correlation method to analyse the deformation of the metal aluminum films with glass substrate under temperature field. Our results can be adapted to further extend the applications and provide important reference for the designing of the key coating...

Excess fuel on board reduces payload and increases fuel burn. In order to reduce fuel consumption, the optimization of fuel policy is one of its technical. In this paper, a statistical method to fuel policy optimization with Minitab is studied. The QAR and flight plan data are used to analysis. As an...

Terahertz electromagnetically induced transparency (EIT) metamaterial based on the dual layered resonator array was fabricated on flexible polyimide films using photolithography technique. The samples were measured by terahertz time-domain spectroscopy (THz-TDS). The reflectance and absorption of the...

Considering the multiplicative model for speckle noises, the kernel regression base on multiplicative model is built as the maximum likelihood estimation. Then, the gray similarity measure is put up forward based on the Gamma distribution, so the speckle reduction based on the multiplicative model for...

For adapting the global Internet of Things, one of important things is building product lifecycle management (PLM) visualization control platform. The goal of visualization of PLM is to build a information integration platform. The information platform includes all kinds of demand information for all...

When designing database table structure, it is necessary to balance the design normal forms against properly retain redundant data. Based on design normal forms of relational database, a method called "Record relationship mark" is introduced in this article. The method helps to reduce program complexity...

The steam pipe network is a complex object to be modelled and monitored with traditional mathematical model. In this paper, the mathematical model of single steam pipe is analyzed and an innovated data-drive modelling method with piecewise performed principal analysis (PCA) is proposed. In this method,...

In order to better arouse the students' enthusiasm of extracurricular exercise, use asp.net+sqlserver2008 development tools and design a daily running exercise monitoring and management system for college students based on campus WLAN and Android platform technology. The students use this system to collect...

Due to round-off errors, watermark detection may not be perfect in the absence of attacks. In this paper, watermarks are adjusted so that the watermarked image is integer-valued. Near-perfect detection is achieved by the DC components of DCT and approximation images. Perfect detection is achieved by...

The monitoring and alarming system of a marine engine room plays a significant role in the shipping automation. However, the performance of a monitoring system depends largely on the development and support of both hardware- and software-based technologies. Different kinds of problems exist in the traditional...

Compared with traditional steel materials, sandwich panel has been widely applied in underwater vehicle structure because of the high specific strength, excellent acoustic performance and strong design ability. Based on the acoustical-solid coupling finite element method, the vibration and acoustic radiation...

Fuzzy C-means (FCM) algorithm is used to cluster monthly power consumption data of power consumers, which has been pretreated, in a certain domestic area, and power consumers clusters in three different months and each of clustering centers can be obtained. According to the algorithm, the reliability...

In this paper, a conceptual framework for Remaining Useful Life (RUL) prediction of lithium-ion battery integrating deep learning is presented. The main processing stages, i.e., feature extraction, redundant information removal, data preprocessing, DNN model training, RUL prediction and evaluation, are...

From the theory of coupled charge blasting, the coupling charge blasting test and the field application of coupled charge blasting, the total energy of coupled charge explosive burst stress wave is the strongest, and the explosive energy is more used to crush the near borehole medium .

The research status from coupling blasting theory, experimental study on decoupling charge blasting, decoupling charge blasting field application research status, the decoupling charge blasting in the hole wall pressure increases, higher utilization of explosive energy, to enhance the ability of rock...

Porous oil retainer is a key factor to ensure good lubrication of the inertial navigation bearings. The PTFE/PI porous retainer made of the original recipe and process preparation, in the high-speed operation, will appear serious wear, high temperature rise, a large amount of oil loss in the micro pores...

To meet high frequency oscillating and light load conditions, a kind of self-lubricating spherical plain bearing used in the helicopter main rotor system is developed. The self-lubricating liner material is designed and woven with PTFE+Nomex fiber by three dimensional weaving process.The high-performance...

The microstructures of machined surface of the specimens in electrical discharge machining(EDM) for SiCw/2024 aluminium matrix composites were measured with scanning electron microscope(SEM) and Talysurf-6 roughometer, and the energy spectrums of them were analyzed using EDAX spectrometer. The results...

A tooth of the input helical gear of an intermediate gearbox in a helicopter fractured during testing. In order to find out the failure mode and cause, macro and micro observation, hardness and carburized depth testing, microstructure examination, surface roughness and round angle testing were carried...

Maintenance is an important means to ensure the quality of airport pavement concrete and an indispensable key link in the construction process of the airport pavement. This article through engineering example of airport pavement construction contrasts the economy of most commonly used geotextile maintenance...

Fiber is capable of improving the corrosion resistance and freeze-thaw durability of concrete of airport deicing platform. After 300 freeze-thaw cycles, the relative dynamic modulus of plain concrete is reduced to 73.46%, and the relative dynamic modulus of fiber concrete is about 80%, that is, the fiber...

In the hydraulic suspension conveying process, different size particles released from different positions into the flow field due to the different trajectories of collision, and the collision of gelled crude oil particles will lead to a large number of aggregated particles, is not conducive to the normal...

The driving motor is the direct power source of electric vehicle, and speed、torque、work efficiency of motor have a great influence on the matching of vehicle powertrain. The back-to-back motor test not only can detect some key parameters, but also can detect the motor performance is good or bad. However,...

The oxidation behavior of C/SiC composites, prepared at low temperature as 900, comparatively lower than currently reported fabrication temperatures, was investigated, which indicated that the C/SiC composites started to oxidize at about 600C, and the flexural strength was enhanced diversely after oxidated...

Steer-by-wire is the latest technology in vehicle steering system. This paper reviews the domestic and foreign development of steer-by-wire steering system. The structure ,characteristics and working principle of the steer-by- wire steering system were analyzed in detail. At last, the solutions that...

The design of the belt transmission device of the lamination machine is carried out in the paper. The classification and power analysis of belt drive is introduced. The force analysis of belt drive is presented , the centrifugal force generated by the pulling force, drive force of the belt, baseline...

The pneumatic part of the lamination machine is presented in the paper. The type of cylinder is introduced. The parameters of pneumatic device are designed. The parameter design of the pneumatic device of the box cover, the design of the parameters of the lifting pneumatic device for the cylinder, and...

The present penalty-based contact treatment will lead to a simple implementation, and it is difficult to determine a suitable value of the penalty parameter. The usual way is adopting an appropriate multiple of the modulus of elasticity. In this paper, an augmented method for isogeometric contact problem...

Two different aging modes of continuous aging and interval aging were adopted to investigate the intermetallic compound (IMC) growth between Sn-3.0Ag-0.5Cu (SAC(305) )solder and Cu substrate. The morphologies of IMC layer are different during two different aging modes, and there is only one phase(Cu6Sn5...

The morphology of intermetallic compounds (IMCs) at Sn-3.0Ag-0.5Cu/Cu interface was investigated during solid-state aging with multiple reflow cycles. Results showed the scallop shape of Cu6Sn5 becomes elongated type with an increase in the aspect ratio gradually with increasing reflow cycles. Moreover,...

Robotics is one of the most important technologies that affect human being in the twenty-first Century. Motion control is still the classical and difficult research problem in domain of industrial robot technology. In this paper, the important technical problems and research progress of the motion control...

The state land network project is China's "11th Five-Year" period included in the national high-tech industrial development project of the 12 major national science and technology infrastructure construction projects, this paper on the background of the state land network project and the significance...

To solve the problems of 3D mode quality inspection ,the automatic extracting software of 3D annotation based on process model is programmed by UG NX8.0 developing platform and C#10.0 developing environment. Achieve the function that drawing the model process information from 3D techology model, provides...

This paper makes an investigation and analysis on the status of special shaped parts processing of wooden furniture. On this basis, according to the shape and structure characteristics, the special shaped parts are classified. In addition, the processing procedure of solid wood special shaped parts is...

Using an opportunity of reconstruction of a assemble PC hollow slab bridge, the mechanical behaviour of a hinged joint and hollow slab under vehicle loads are discussed is this paper, such as the cracking load and load transmitting performance. The results show that the cracks occurred in the bottom...

Composite (CrAl)N and (CrAlSi)N hard coatings were deposited on 1Cr11Ni2W2MoV steel sheets by arc ion plating system under different N2 partial pressure (1Pa, 2Pa or 4Pa) respectively. The composition, microstructure, phase composition and oxidation resistance were characterized by SEM, EDS and XRD....

In this paper，a review of some of the existing event-triggering schemes and system, in which they are implemented is discussed. A summary of the main ideas of the event-triggering schemes is given. At the end of paper, the motivation for this research is given in detail.

In order to improve the correct rate of fault diagnosis, through combining cepstrum and dimension spectrum, dimension cepstrum was defined.Theoretically,  dimension spectrum, can suppress the Gauss noise completely,  cepstrum can reduce false peaks in spectra, but the noise has a significant influence...

In order to analyze the performance of the differential device, the cosine signals’ spectrum is caculated to compare. Differentiate has two methods: mathematical differentiate and digital differentiator, so two methods can be used to estimate the differential effect of digital differentiator. Digital...

Through the statistics of the replacement parts of the B737NG aircraft pneumatic system, it is found that the precooler control valve(PCCV) is an important factor leading to the pneumatic system failure. It is concluded that the working conditions and the maintenance quality of the PCCV are the main...

U shaped girder is a kind of low height bridge. The application of concrete U shaped girder is wide in highway and urban bridge. In general, it is composed of concrete and steel and compared with the mechanical analysis, little research has been carried on the inverse model of elastic modulus of U shaped...

This paper analyzes the current situation of non-contact measurement at home and abroad, a profound understanding of the importance of data synchronous of non-contact measuring machine. Then, design three types of data synchronization experiment, and set up verification environments respectively to analyze...

ZnAgInSe quantum dots with 5 and 6.7 nm particle sizes were obtained by accommodating the reaction time. The red shift in the photoluminescence spectra of ZnAgInSe quantum dots with size from 5 to 6.7 nm was caused by the quantum confinement effect. The temperature dependence of chromaticity coordinate...

Starter motor is an important part of the auto starting system. The analysis method of temperature field for auto starter based on FEM was given. The size of heat source and the heat transfer coefficient of materials were determined. Taking 1/4 model of motor as the research object, the finite element...

Short electric arc machining is a new type of non-contact strong current machining, it has the charactristics of no cutting force, simple electrode manufacturing, high processing efficiency, etc. In order to study the machining properties of Ni-base high-temperature alloy materials,the mechanical machining...

In view of the fast and effective quality inspection requirement of IOT technology, based on the inherent communication protocol and electrical interface of the gage, we develop the digital measuring tool networking and data acquisition technology based on wireless technology, and integrate data acquisition...

To solve the problem of multI-causes process qualIty dIagnosIs In manufacturIng, an algorIthm based on the bInary tree of qualIty cause set and IntermedIate qualIty IndIces Is proposed. FIrstly, the set of qualIty cause Is dIvIded progressIvely to form a complete bInary tree, and then every node of the...

The Carbon fiber continuous sucker rod has wide application in oil field, but currenttly it adversely affected by the lack of processes and operations devices. In order to solve these problems by using combination of activity diagram method on the existing vehicle, based on second-class chassis , puts...

In this paper, a high speed amplifier used in high-resolution GSPS pipelined ADC is described. To satisfy a 14bit 1GSPS ADC accuracy and speed demand, The high speed amplifier adopts two-stage Miller compensation architecture. To increase amplifier gain, active gain-boosted cascodes and cross-coupling...

Forehand stroke technique is the most frequently used and aggressive technique in tennis competition. It’s also the first technique for beginners to learn. With the correct, standard and powerful forehand technique, beginners can not only occupy the active position, but also can lay a good foundation...

Based on the structure characteristics of the human physiological knee joints during the flexion and extension movements，we design a self-aligning wearable knee exoskeleton mechanism considering the principle of human - machine compatibility. The mechanism's mathematical model is established using the...

Based on the method of equivalent replacement beams(ERB) and superposition method for computing deflections of beams, deformation computation of statically indeterminate beams with the method of ERB is discussed. First, the method of ERB is introduced. Second, the conclusion of deformation computation...

In order to avoid the erroneous judgement produced by the motor discontinuous current, which is caused by the gap between mechanical friction and mechanical transmission. the power window anti-pinch system model is set up based on the MATLAB/Simulink, and the simulation has been done. The simulation...

With the rapid development of artificial intelligence and the development of intelligent hardware and equipment, the data has gradually changed from a single text mode to a diversified data. Diversified data is not only large in size but also diverse in scope, so it is not easy to conduct statistical...

With the improvement of tennis technology in China, it is necessary to study the composition of its technology philosophically.This article attempts to make a preliminary discussion on some aspects from the simplicity and complexity, accuracy and fuzziness of natural dialectics category of tennis technique,...

Anti terrorist and riot robot is composed of laser guidance, grasping system and walking device. It can replace some related personnel to do some dangerous operations. The grasping system studied in this paper is mainly composed of four parts: base, rear arm, forearm and mechanical gripper. Joint rotation...

In view of the problems that the off-line inspection of traditional measuring instrument was inconvenient to automatically correct the Computer Numerical Control (CNC) machining process parameters and feedback control the in-process machining quality, the configuration collaborative monitoring method...

Dynamic monitoring and risk assessment of liquid storage tank is an important technical part of enterprise safety guarantee. A general framework of safety monitoring system for tank area was brought up in this paper. It established a parameters monitoring and precaution system on the base of configuration...

Cascading tripping accidents are main causes of complex cascading outages in power system. This paper proposes a method of predicting whether cascading tripping will occur according to the nodal injecting power. In order to give the theoretical foundation of this method, this paper verifies that the...

Small changes in the production plan will cause frequent changes in machine tools, which brings the NC program quickly transplant needs, this paper integrates simulation, post processing and cutting parameters optimization technology, based on a typical example, successfully proposed and validated a...

In order to realize the automated warehousing information management, a storage information management system based on patrol robot technology was designed and developed. The robot's core controller uses a STM32F104 chip produced by ST Company. The position information of the robot is obtained through...

This article propose and use the Modify Constant Modulus Algorithm (MCMA) and Decision-Directed Least Mean Square (DD-LMS) joint equalization Algorithm to balance Inter-Symbol-Interference (ISI) at the receiving end of 16-QAM. We analyzed the joint equalization technology implementation and switching...

Some fracture-cave units controlled by single well in fractured-vuggy carbonate reservoirs lack natural energy, which leads to rapid decline of production and recovery. Having applied the N2 huff and puff, Tahe Oilfield has improved their exploitation. However, the effect of N2 injection weakens in the...

In order to solve the problem that no suitable technologies are available for the sludge removing of rainwater storage tank，a novel set of sludge discharge regulator has been designed, its principle is explained, its structures and components are introduced, the working conditions are analyzed. The analysis...

Under the influence of marine environment such as wind, wave and current, the lifting movement in the vertical direction will be produced. Heave movement will not only affect normal operations, but also lead to serious safety accidents and environmental pollution. The research object of the technology...

To suppress the pulsation problem for the linear hydraulic motor , the pulsation problems of instantaneous angular displacement pulsation and instantaneous angular torque were analyzed. The kinematics equations of the motor crankshaft linkage were established. The kinematics models were simulated and...

According to the arrangement mode of ship anti-heeling airbag and the principle of various connecting and fixing modes, the corresponding connection device is put forward, and the force condition of the connection device is studied, and the strength of the connection device is analyzed. The results show...

By the advantage of high CMRR and high input impedance of the parallel connected differential amplifier, this paper designs a comparison amplifier which has good linearity.

Heart Rate Variability is the description of instant duration change between two linked heartbeat in a series of continuing ECG signal. It was found that it can be used to recognize people’s psychological stress. Characteristic parameters selecting and recognition model have becoming the kernel of study....

In recent years, with Schiff base being applied and researched deeply in biology, IsoIsovanillinSchiff base ligands’ synthesis and the coordinathion properties have become a hot spot in the research of Schiff bases compounds. This paper expounds that we keep Isovanillin and taurine as the raw material...

We design an adaptive quantized tracking control for a class of nonlinear systems with unknown parameter combined with quantized input. It is proved that by using the proposed method, all signals of the closed-loop system are bounded. Moreover, a very coarse quantization input can be obtained and the...

In this paper, an intelligent monitoring terminal for boiler operating state was studied based on embedded technology, wireless communication technology, and highly integrated design technology. The architecture of intelligent monitoring system for industrial boiler was proposed firstly, and then the...

In order to study the strength and crack resistance of lightweight concrete, this paper made the concrete using lytag as coarse aggregate block, and join in the block of polypropylene fiber in order to improve its strength and crack resistance. Use control variable law for reference block, the following...

In recent years, the technologies of close range photogrammetry have been widely used in the manufacture of aviation, so the on the technologies of close range photogrammetry and applications are studied. The taking of measurement points and the calibration of close range photogrammetry are discussed....

In order to solve the problem of low accuracy of SOC estimation under complex operating environment, an improved SOC estimation algorithm based on temperature correction is proposed. First of all, considering the influence of temperature on the parameters of the battery model, the parameters of the model...

The availability was low and the maintenance cost was expensive. In order to solve the problem, a new dynamical maintenance strategy applied to the component of wind turbine was presented, which was called condition based opportunistic maintenance strategy. In the strategy, Weibull proportional hazards...

Being directed against the shortage of existing 3D printing, a five-axis 3D printer is designed, and a free form surface five-axis 3D printing method is presented. In this method, a five-axis 3D printer is used, a curved surface instead of a flat surface is used as the initial surface, each layer being...

Make the slew bearing for object of study which use of petroleum machinery.According to the requirements of customers, design the basic structure of slew bearing, Set up 3D-model of the slew bearing in the Solidworks.Through the appropriate simplification of the model, the slew bearing are properly loaded...

A Discrete Bat Algorithm (DBA) is proposed to solve the assembly sequence planning (ASP) problem. Several key technologies including the position and velocity of Bat Algorithm, corresponding operators for updating the position and the position of local search are redefined. The fitness function is established...

Rainfall reduces the possibility of increasing landslide instability. In order to study the stability of landslides with multi-stage sliding surface under rainfall conditions, this paper studies the physical and mechanical properties of soils with different moisture contents through direct shear tests...

Rainfall reduces the possibility of increasing landslide instability. In order to study the stability of landslides with multi-stage sliding surface under rainfall conditions, this paper studies the physical and mechanical properties of soils with different moisture contents through direct shear tests...

To raise the capability of heat-sinking of slab laser amplifier, which is the type of conduction cooling, we need to weld crystal and heat sink with micro channel together. Slab laser module with high power and good beam quality is required to reduce welding void ratio and lower thermal distortion. In...

In this paper, the simulation method is used to study the high-temperature impact of ultra-high temperature ceramic materials with two-stage light-gas cannon projectile.Using ANSYS-AUTODYN dynamic program, smooth particle hydrodynamics and finite element mesh coupling algorithm (SPH-FEM) were used.The...