A novel environmental-friendly Cu-Sn high temperature solder paste was fabricated by mixing Cu powder, Sn powder and commercial purchased flux. Different type and content of the flux may significantly affect the thermal properties of the solder paste. The bonding layer was composed of compact Cu3Sn and...

In order to solve the problem of low efficiency in dealing with large numbers of queries in Hive, we propose a multi-queries region clustering (mqrc) method to improve the overall performance of Hive. By clustering the query set, we divide the query with high similarity into a set. Each group generates...

Tea polysaccharide (TPS), which is considered to be another important active ingredient after Tea Polyphenols Relay, consists of monosaccharides which have a variety of biological activity and the complex structure. It has hypoglycemic, lipid-lowering, anti-thrombosis, anti-oxidation, anti-aging, anti-atherosclerotic,...

In the stream processing, the connection operation is one of the very important basic operations, and it plays an important role in real-time data query and mining. According to the existing data stream connection technology and combining with the characteristics of coarse granularity processing unit...

This paper studies the methods of the application of the Building Information Modeling (BIM) in the fire data simulation. Through the analysis of the input data files of Industry Foundation Classes (IFC) standard of BIM and the Fire Dynamics Simulator (FDS) model, it was found that both of them used...

Electric barrier, which is one of the most vital function in GPS auto monitor system demands, has being widely applied in many fields liking bike sharing. This paper presents an intelligent GPS auto monitor system and describes the design and implement of electric barrier on a Shared bike. By means of...

The demand of indoor positioning become more and more urgent with popularity of the smart home, smart medical, etc. In recent years, the research on indoor positioning has achieved some results, especially the method based on Wi-Fi, which is due to Wi-Fi technology is mature, Wi-Fi signal is relatively...

As for complex grayscale image, a kind of adaptive boundary tracking method for multi-objective is proposed in this paper. First of all, the grayscale image with noise is processed by Gaussian filter. Secondly, the image gradient after filtering is calculated. According to the geometric characteristics...

The public transport and urban form of small and medium-sized cities have entered a rapid development and evolution stage. In order to make small and medium-sized cities to be healthy and sustainable development, this paper makes a quantitative analysis of the coordination of public transport system...

Traffic forecast is the basis of traffic planning. And it is an important basis for determining the road traffic network structure layout, capacity and provincial corridor layout. The accuracy level of the model and algorithm directly restricts the reasonable degree and scientific level of traffic network...

In order to improve the simulation efficiency of the space environment, a kind of honeycomb thermal shroud is designed. Using the fluid mechanics theory and the finite element method to do the numerical simulation for the fluxion and the heat transfer enhancement of the internal fluid in the honeycomb...

Factors that affect tree species suitability assessment especially for embankment shelter forest are very complex. And the information for assessment always has incompleteness, multiplicity and uncertainty. To solve the complexity and difficulty of shelter forest vegetation species selection effectively,...

The construction of fuzzy entropy is one of the research focuses in the field of vague sets. The existing fuzzy entropy formulae have three deficiencies: Firstly, as the increase of hesitancy degree, the change of entropy value is unstable; secondly, when the value of fuzzy entropy is 1, the change of...

At present, there is increasing requirements for updating the healthcare system by introducing the new information and communication technologies, especially for indoor domains. However, the current system and healthcare robot are restricted to remote monitoring and medicine delivery research, cannot...

This program mainly use the neurons in the main control board and six-axis acceleration sensor belong to Intel based on Arduino called Curie Nano to collect the gesture data. And after extracted the feature of these data, motion data training must be begun, then to recognize the relevant motion such...

According to the technical features of detonation transmission among long interlayers, this paper uses the new method of powder actuating function and piston restriction energy control, combines the method of liquid restricted transmission in tubing, develops pressurizing device among long interlayers....

using the literature material method, in the perspective of informatics, use of library science, archival science, ethnology, multidisciplinary knowledge such as sports science, in the “area” of the value concept- “win-win cooperation”, the Chinese minority sports from the angle of multiple stereo intersection...

With the arrival of the sharing economy, the shared device appears rapid development.At present，sharing umbrella equipment lacks credit management mechanism (database), client-side， etc. The integrity of system structure is poor, the user experience is not good. RFID circuit design is simple, card reader...

With the growth of complicate system or crystals, whereas, a few phenomena have occurred and been found, which could result in final crystals or patterns with errors. Among those phenomena, one has still not been processed in current published literatures, which is named symmetry tile may appear. This...

Drink-driving, alone traffic police department regulation is not enough. Only taking the necessary scientific and technological means, drink-driving illegal behavior can be effectively controlled. In this paper, first, we established the detection of drink-driving behavior model of BP neural network;...

Aimed at the problem in measuring the utility value of supply chain network in information sharing, this paper proposed a utility value model of supply chain network based on different information sharing strategies. Through the analysis of the research status of sharing information in supply chain at...

With the development of artificial intelligence, unmanned system and equipment has become an essential part of electric power system and played a growing vital role in the intelligent power generation and storage, smart grid, unmanned circuit check, and automatic meter reading system. Speeding the development...

The purpose of this study is to study the influence of the manual welding process parameters of platinum-copper wire on welding quality to find out the optimal welding parameters. In welding process, welding can be divided into two kinds. One kind is soldering which is connected by the local high temperature...

In this article we study the influence of weld defects on vibrating responses using a simplified numerical model--flat butt plate with a type-I welded joint. To analyze the changes in vibrating responses influenced by weld defects, a method based on cross correlation function amplitude vector (CorV)...

By using Bojanic-Cheng’s method and analysis techniques, the authors study the rate of convergence of Lupas-Durrmeyer type operators for some absolutely continuous functions having a derivative equivalent to a bounded variation.

With the further development of education in colleges and universities, teaching management of universities has successively been using management system of teaching informationization. It has promoted fast operation of teaching administration and accelerated the innovative development of educational...

The construction of urban landscape should be considered synthetically, and the landscape should be shaped according to ecological law. Huangshi as an eco-tourism city to build, is a combination of urban development goals, direction, group, volume, land and resources and other factors, located in the...

SubSafe is a game-based submarine safety training system developed by UK that presents end users with an interactive, real-time three-dimensional model of a real submarine. The research presents background and main functions of SubSafe. Evaluation of the training effectiveness and some enlightenment...

A elastic-plastic analysis of AlN/Cu jointing plate was performed by FEM to study the residual stress produced in the jointing-cooling process. This residual stress due to the difference of thermal expansion coefficient between ceramics and metal was analyzed, considering the presence of initial defects...

The co-evolution mechanism of manufacturing and logistics is a research hotspot, but there is no good way to estimate the external stochastic disturbance factors and its nonlinear effect on environmental capacity in the existing research. To address this issue, a co-evolution population ecosystem of...

This paper establishes the Markov model based on a insurance system which ascending or descending the auto insurance premiums according to the former multi-state auto insurance. It assumes that the number of automobile claims is a Poisson random variable with parameter l , then establishes a state transition...

In the rocket active segment mission, the spacecraft and rocket separation orbit after the initial orbit number is an important basis to determine the success of rocket launchers. At present, there are many data sources that can be used to determine the number of initial orbits. However, it is preferable...

with the rapid development of China's economy, promote our country science and technology level to a certain extent, but also led to the overall level of substation automation technology in China, through the construction of the implementation of intelligent substation in China, so that it can be in...

Wind farm characteristics is the basis of the research on wind power grid operation and control. The main purpose of this paper is to establish a simplified structure, which is a high security, easy maintenance wind farm model. This model can calculate accurate response in the grid disturbance. The idea...

Based on the input-output principle, this paper establishes the policy input and policy output system of Shaanxi high-tech industry by selecting 10 indicators. This paper evaluates the policy efficiency of high-tech industry in Shaanxi Province from 2005 to 2013 by using the method of data envelopment...

A new classification method based on binary coding is proposed for composite information consisting of a variety of basic information types, which takes the composition of composite information into account at the initial stage of design, so it has high efficiency and good scalability in search operation,...

In this paper, the shot putter Wang Guangfu as the research object, and analyzes the three-dimensional video analysis of the back-stepping shot put technique of Chengdu Railway Station in the National Athletics Throw Series in 2017. The research shows that Wang Guangfu lifted the upper body prematurely...

the school teaching management essentially decides the school teaching quality and stu-dents' physical and mental development level. This article use engineering technology interface analysis, hoping to find the school teaching management, establish the interface contradiction of school teaching management...

An evaluation method of vehicle performance based on set pair analysis was proposed. The evaluating index system of vehicle performance was constructed by setting five first-level evaluation indexes and thirteen second-level evaluation indexes. The evaluation models were constructed by using four-element...

Nowadays, Hadoop distributed file system as a distributed storage system, has a good effect on the storage of large files. However, there is a natural flaw in the storage of small files: storing a large number of small files will produce excessive metadata, resulting in namenode memory bottlenecks; frequent...

The data placement of scientific workflow in the cloud environment has been the key to reducing data transmission. The flow of data across data centers not only leads to time overhead but also affects the efficiency of scientific workflow. In view of this situation, this paper, presented a more effective...

In this paper, the characteristics of automated demand response (ADR) are introduced based on OpenADR communication protocol. As a result of domestic and international demand response pilot projects,The implementation of price-based demand response accounts for a large proportion.Based on the automatic...

There is a great difference between the inter-frame spectrum of ship radiated noise and marine biological noise, so we can identify the two kinds of signals with the difference of inter-frame spectral similarity. This paper describes the inter-frame spectral similarity of the two signals quantitatively...

In the process of constructing Dongxiang nationality literature and data database, some ancient books and materials were scanned into scans. Due to the long age, the background of scanned parts was severely affected and the readability of scans was affected. This paper uses the image processing function...

With the rapid development of information technology and network communication technology, Internet of Things technology to flourish, in the Internet of Things environment, not only contains the past network environment components, but also joined the intelligent object, it will form hundreds of millions...

Measures and suggestions are brought forward for China to with respect to dust explosion prevention, with successful experience and measures adopted by developed countries regarding dust explosion prevention summarized and analyzed in a penetrating way and with the practical situations of safety production...

FFmpeg is an open source computer program that can be used to record and convert digital audio/video, and convert it into a stream. It contains very advanced audio/video codec library libavcodec, and in order to ensure high portability and decoding quality, a lot of code in libavcodec is developed from...

The non-line-of-sight (NLOS) propagation is a key problem of subscriber location in cellular networks. The angle of arrival (AOA) and time/angle of arrival (TOA/AOA) position location (PL) estimation methods are presented to mitigate the NLOS propagation in this paper. In order to reduce the feasible...

Evaluating local SNR values in noisy speech is very valuable for many applications. Research in this paper investigates the separability of local SNR values which are represented by amplitude modulation spectrogram (AMS) feature vectors. Deep belief networks (DBN) were employed in previous studies for...

The usefulness of accelerometer for assessing physical activity has been widely accepted in recent years. In this paper, a portable measuring instrument based on triaxial accelerometer was presented, also the overall design scheme of the portable measuring instrument was expounded emphatically, and combined...

This paper presents an optimized SRAM that is repairable and consumes less power dissipation. To increase the percent of good SRAMs per wafer, redundancy logic and e-fuse box are added to SRAM, thereby building SR SRAM. In order to reduce power dissipation, power on/off states and isolation logic are...

In today's society, unmanned aerial vehicles are becoming increasingly mature and popularized with each passing day. Compared with other fixed-wing aircraft, helicopter-based aircraft and multi-rotor aircraft have emerged like bamboo shoots because it can vertically take off and land, be easy to manufacture,...

To solve the problem of evidence conflict when using D-S theory in multi-source information fusion, This paper in-depth analyzed the principle of Dempster’s rule and discussed its limitations and amendatory measures, Based on this, aiming at the air target recognition, a general method was proposed in...

A particle filter object tracking algorithm based on dynamic feature fusion is proposed in this paper. The presented algorithm uses the complementary features, which are gray histogram and gradient histogram, to represent the object model. In the tracking procession, the confidence for each feature is...

In order to improve the contrast of low illumination image, enhance the processing effect and eliminate artifacts, a color Retinex image enhancement algorithm based on L channel illumination estimation and two dimensional gamma functions is proposed. Firstly, the L image intensity is regarded as the...

In order to find meaningful data for human beings in a large number of biological information and then reveal the nature of life, this paper focuses on analyzing the characteristics of the hydrophobicity of amino acids and adjacent information, using sequential pattern mining Apriori All algorithm to...

The introduction of the Internet of Things system facilitates the involvement of traditional industries, but the problem of time synchronization between the upper computer system and the lower computer system of the Internet of Things may be worth studying and solving. This paper mainly introduces a...

With the rapid development of modern society, people's quality of life is developing rapidly. At the same time, people's demand for health care system is also increasing. In recent years, the growing demand for the health system of the people has been far from meeting the needs of the common people....

Instances expansion of micro-service consumes time for constructing new instances, it can’t satisfy the requirement of low latency service, such as scientific calculation workflows. In order to reduces the instance expansion time, an instance expansion algorithm for micro-service with prediction is proposed...

In this paper, a detection scheme combining Bayesian network modeling and deep neural network feature extraction is used to detect the remaining cabinets in monitoring. The iterative sampling method of RJMCMC is used to track the follow-up multi-targets, and the identification of the legacy box is realized...

Computer automatic speech recognition and remote control technology is a major breakthrough in the realization of remote control intelligentization. This system is a 16 bit structure based on the Internet of things, which combines linear logic analysis technology, program-controlled switching, signal...

Based on the in-depth study of the traditional subway information service management system, the paper analyzes and researches the new requirements of users for subway information services, and combines the latest research results of mobile internet technology to build a new architecture of a smart subway...

Under the background of low accuracy of existing indoor positioning technology, serious wireless resource consumption and complex system implementation, this paper studies the indoor positioning technology based on visible light communication and designs a visible light indoor positioning device. The...

In this paper, the signal collected by WM8731 that is a high resolution analog to digital controller (ADC) is set to establish custom NIOS II central processing unit (CPU) and peripheral controlling in the system on a programmable chip (SOPC) Builder, systems developing tool, of Altera Quartus II that...

In this paper, the dynamic equation of the simplified model of dispersed droplets in two phase liquid under ultrasonic excitation is derived based on the derivation method of cavitation bubble motion equation. The influence of different parameters on the radius of droplet under ultrasonic action is obtained...

In order to get the optimized process parameters for etching ZnS by inductively coupled plasma (ICP), a mixed gas of CH4, H2 and Ar is used for the etching. This paper studies the influence of ICP etching rate and surface roughness after etching of ZnS by changing the process parameters of CH4/H2/Ar...

By aiming at the situation of applying the existing intelligent algorithm to the cloud computing job scheduling and giving analysis and comparison, it proposes the method combining K value clustering with genetic algorithm. The improved genetic algorithm with the solved individual fitness in genetic...

This paper focuses on analyzing characteristics of the ultra-wideband (UWB) measurement positioning system model. To start with, problems facing the UWB measurement positioning system traditional model are briefly expounded. Concerning these problems, measures, including removing the fixed devices and...

The appeal information of patients is very important, and each piece of information is related to a living life. Calling system becomes a bridge between the doctor and the patient. Compared with the traditional wired calling equipment, the wireless transmission system design and implementation will save...

Multiple tags collision problem severely degrade the identification efficiency of an RFID system. As a mainstream RFID anti-collision algorithm, deterministic tree-based algorithm can guarantee that the reader correctly identify the tags within its coverage range. In order to overcome the shortcomings...

Today, the information is changing rapidly. People's demand for information retrieval is getting higher and higher. The information retrieval technology based on keyword has not fully met the user's requirements in the precision and recall. The information retrieval technology based on semantic is still...

The development and application of IoT has achieved remarkable results in recent years. A large number of sensors are connected to the machines and are combined with the Internet, which achieves intelligent management and operation. At the same time, the security and privacy problem in the IoT environment...

With the progress of the times, the continuous development of science and technology, and the widespread application of computer networks, the Internet, the Internet of Things, big data, cloud computing, and artificial intelligence have gradually entered people's field of vision. In the era of big data...

Through a new storage architecture of Internet of Things (IOT) big data research, retrieval and analysis of large data put forward the optimization design of innovation, design and build the mass small file storage system based on HDFS SensorFS, solve the fundamental problem in storage, efficient for...

This paper proposes a method to compare the marks of two bullet heads. First of all, the correction algorithm of the bullet head marks and the denoising model of the matrix low rank decomposition are proposed for the translation and rotation errors of the measured data. Finally, the method to compare...

In recent years, lithium-ion battery packs are more and more widely used in new energy vehicles. In order to improve the battery life of new energy vehicles and to solve the imbalance of lithium-ion battery packs during charging, according to different operating conditions of lithium ion batteries, The...

The precision of optical gyroscope can be improved by enhancing Sagnac effect. Aiming at the accuracy of optical gyroscope restricted by the theoretical limit, shot noise limit, we firstly analyze the theoretical limit of Sagnac effect in optical regime with quantum theory, and point out the physical...

For the first time, the philosophy of information puts forward the world view of “the dual existence of material and information” and reclassifies the area of existence. It’s viewpoint of “existence = material + information” establishes the theoretical origin of the information ontology and clarifies...

The fluctuations in the International Financial Markets (IFM) are mutually reinforcing, and they truly show the characteristics of the fluctuations of the IFM. Previously, theories and methods of general economic contrasting construction are based on static floating effects, and there is no way to fully...

Users by different intensity authentication can gain different levels of access in secure operating system. Multiple authentication using Multiple Identity Authentications (MIA) mechanisms and MIA rules authenticate users, through the fuzzy inference, the different users are given different authentication...

Distributed database can provide the more powerful concurrent processing ability, the better resource extensible and architecture flexibility, so it has been widely used in commercial fields recently. According to the deep research on distributed database and comparative analysis of multiple deployment...

This paper describes the design of the intelligent multi-function door. First, the overall structure of the door is designed. In this way, the detail design process is illustrated in the design of the thermal power discharge infrared sensor, the design of the fingerprint lock, the design of the server...

There is flexible impact during the driving of straight geneva mechanism. Therefore, geneva mechanism with combined contours is proposed. The design method of cam contour is adopted in new geneva mechanism (back seeking cam contours according to follower motion). And ADAMS is adopted to carry out the...

The most prominent feature of the 21st century is the flourishing development of information technology(IT), the IT represented by artificial intelligence(AI) has had a profound influence on various industries. The health care will be the first to bear the brunt, suffered its impact is mainly reflected...

The linearity and gain of RF power amplifier are greatly affected by the quiescent working point of the amplifier. In practice, the threshold opening voltage of the power amplifier changes with the temperature rise, which leads to the change of the quiescent working current, and which makes the linearity...

In order to increase the control accuracy and achieve the unit power factor of totem-pole bridgeless PFC, and get sinusoidal current waveform, the method of synchronous reference frame is applied to the control of totem-pole bridgeless PFC in this paper. First of all, the working principle of totem pole...

The development of technology in fingerprint identification and anti-theft system of smart lock,has become quite mature.The article started with research on remote control,visitor identification reminders,emergency open, and setting different doorbell in different situations. Developed a matching mobile...

By the theory of innovation diffusion, this paper proposes an assessment and measurement system of tourism E-commerce innovation diffusion in the process view. With the data collection of survey, tourism E-commerce innovation diffusion is analyzed comparatively by selecting Ctrip.com and Tuniu and other...

In the era of big data, educational decision-making, educational policy, educational concept, educational scientific research paradigm and cultivation of school core competence are all impacted, and the importance of educational big data is becoming more and more important. The big data is applied in...