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Shadows of the sun position techniques can determine the place and date of the video. First, use Matlab to extract video files, extract n pictures at such intervals, after reading the picture get n sets of the shadow length l changes with time t. Known date from capture date calculate solar declination,...

Multipoint low voltage differential signaling (M-LVDS) [1], who’s electrical parameters meet the requirements of ANSI/TIA/EIA-899 standard, is a widely used technology in multipoint interconnection. Through the study of the standard, the wide-swing current mirror technology was proposed to satisfy the...

This paper present a process of failure analysis which, to some extent, can demonstrate a variety of failure process in regard to power transistors. General failure analysis process will be introduced at the beginning of this article. The test objects are power transistors which were found to be the...

The gold and aluminum (Au-Al) wire bonding is used to realize interconnection for semiconductor devices. But, sometimes, the failure of Au-Al bond wire exists. In this paper, the failure influence factors of Au-Al bonding to Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) were discussed....

The paper researched the DNA computing method of classical optimization problems on weighted graph, improved the method of Weight-coding that belongs to the original model of DNA, raised some new methods of DNA encoding and DNA computing. Generally speaking, through the Relative length graph design that...

A standard 1.0 m CMOS process are developed at AEMD (Center for Advanced Electronic Materials and Devices), which is a public platform about advanced micro-nano fabrication. The process supports 1.0 m twin well technology, with double poly-Si, double metal, and defines the standard process modules in...

It is highly important to choose suitable of the foundation in underground engineering. With the engineering, the foundation is made of gravelly soil, which distributed discontinuity and had bad uniformity. Drilling method, dynamic sounding method and deep plate loading test were applied, combined with...

Aiming at the limitation of the traditional substation in the control and management, computer remote control technology was used to ensure the personnel on duty in the remote control center can obtain monitoring information of unmanned attended substation to realize the substation intelligent management...

Recently, the sparse representation-based classification (SRC) is getting more and more attention in many fields, such as pattern classification, which has been successfully applied to face recognition. However, the essence of SRC, within face recognition, is to use the linear combination in the same...

With the development of social media, people like to express their views on the Web. Because people express their views casually, which makes the opinion text contain a lot of uncertain and unstructured contents, and it is difficult to cluster the text by normal classification methods. An algorithm of...

Follow the development of Internet, more and more opinion texts are written on social media web by people, and it is very difficult to find the features in these texts because of the texts scale. We propose an algorithm to find features from key words by words reduction method, which considers the correlation...

Linear support vector regression (SVR) is a popular machine learning algorithm. However, as the amount of data increases, the learning procedure of SVR becomes time consuming. In this paper, we propose a mini-batch quasi-Newton optimization algorithm to speed up the training process of linear SVR. The...

The traditional railway freight early warning adopted independent indicator thresholds discrimination. But it would lead to inaccurate results warnings, it may alarms when abnormal events occur instead of early warning. This paper proposes a railway freight early warning model, which apply support vector...

Nowadays, it has became a widespread approach for achieving rich information in modern web applications using AJAX ,which cause two serious problems for web crawler. One is the incomplete information getting from web page due to the inability to parse dynamic web page. Another is the efficiency of the...

Most techniques of DoS attack are single-model, which have the disadvantages of low attack efficiency and weak adaptability. This paper presents a blended-mode DoS attack mode and we focus on the analysis of the efficiency of this mode. In this mode, we combine different DoS attack modes to attack the...

With the LCD controller of MIPI interface widely used in portable embedded systems, this paper combines MIPI technology and Altera's NIOS II soft core processor and completes the design of IP core for the LCD controller of MIPI interface in FPGA. The IP core can be implemented image display with different...

Current real-time task scheduling algorithm only focus on the user tasks’ real-time demand, and these algorithms are not flexible enough to adapt for real-time change in heterogeneous systems. In this paper, by means of the characteristics of global optimization searching of genetic algorithm, from the...

The technology has been integrated into the nanometer scale, the challenges posed by the increasingly obvious power, has gradually become a major problem restricting the development of integrated circuits, as well as the preparation of the core issues and design of integrated circuits exist. Low-power...

Aerial aluminum conductor (ACSR) as the primary overhead lines products, has been running in the field for a long time. The inevitable corrosion will be affected by heavy pollution environment. Salt spray is acknowledged as the natural environment in most demanding of corrosion, which can make the wire...

In this paper, a rapid detection method for weak signal detection is proposed in resonant pressure sensors. The method is based on cross-correlation with a dedicated phase sensitive detector (PSD) and an improved integrator. The PSD is the sensitive resistor which is an ideal analog multiplier based...

First, each company's taxi subsidy scheme is mainly to improve fuel costs when oil prices rise subsidies, paid holidays, extreme weather subsidies. However, these subsidies with respect to the money and high fuel costs, but inadequate. In heavy traffic roads, peak demand periods, there are still many...

The significance is increasing efficiency and saving energy for segmenting the long primary linear induction motor (LIM) into blocks. As the research object, a high order and non-linear model for single segment primary is built by using the finite element method (FEM), and the equations of inductance...

A novel data driven face descriptor based on point-to-subspace metric is proposed for subspace classifiers. Unlike conventional feature descriptors which are carefully designed by hand, the newly proposed method uses supervised learning to derive more robust and more discriminative descriptors. During...

Traditional access control model in building safety regulation is not flexible enough in some scenarios, especially in emergency events, which may lead to the alarm events not promptly treated. In order to solve this problem, we design a context-aware access control model which uses RFID technology to...

In crop interpretation by remote sensing, Gray distribution of crop is overlapped in some intervals. The non-target crops fall into the target crop, which would greatly increase the workload in post classification. To reduce these classification errors, and improve accuracy of clarification, maximum...

Storm is a real-time streaming of Big data processing field tools. But the task of topology will even divided to the executors in worker node,which as default scheduler. It neither consider internal solt transmission delay time, nor consider transmission delay between nodes, but does not consider the...

In recent years, distinction and prediction of urban traffic congestion has become an important part of Intelligent Transportation System (ITS), hence attracting more and more attentions. Road congestion can be predicted by analyzing traffic flow data collected by various data acquisition equipment primarily....

The Linux-based android operation system is now exposed to high risks of security since the malware of smart phone explodes. For the purpose of effectively detecting the malware on the android platform, an android malware detection method based on feature codes is described in this paper. By using the...

Recommender system has been extensively studied to provide the most relevant data to users in this era of information explosion. Among all kinds of recommendation algorithms, collaborative filtering (CF) algorithm is one of the most famous ones because of its high accuracy and simple implementation....

This article analyzes the different type of large synchronous generator excitation system and discussed the adaptability of the excitation system model of PSASP. A self-excitation model and a three machine excitation model is modeled and simulated, which proves the accuracy of PSASP model.

To improve the positioning accuracy and robustness of indoor positioning technology, a fingerprint positioning method is proposed based on the Kalman filter and the probability weighted Bayes algorithm. Firstly, the optimal estimation of signal strength is calculated using the prediction and correction...

The polymerization of acrylamide was initiated by complex redox system in aqueous solution.Meanwhile, according to the best experimental craft,we conducted a pilot-scale polymerization of acrylamide.We studied the effects of different pilot experiment intrinsic viscosity of the polymer, dissolution time,...

The ternary cation flocculant P(AM-DMDAAC-DMC) was synthesized by aqueous solution polymerization with raw materials of acrylamide(AM),and dimethyl diallyl ammonium chloride(DMDAAC) and methacryloyloxyethyltrimethyl ammonium chloride(DMC) with the complex redox as initiator.Effects of cationic mononer...

With the large-scale construction of wind farms, the access of the wind farms affects the voltage of regional power grid. Power grid data in the South China region is built on the PSD-BPA system, and the PSD-BPA data of the current region can be obtained from the superior power grid. According to the...

A type of soldering machine based on PIC-controlling is introduced in this paper, the high speed micro-controller unit (MCU) with kernel of 16F84A is adopted in PIC. The data is send to lower computer to control three axis motions by computer serial port, the process of automatic soldering is realized....

Based on power grid dispatching automation platform, Establishing distributed resources cooperative scheduling management system, including wind power, biomass power generation, photovoltaic power generation and energy storage electric vehicle charging stations. The use of intermittent, renewable energy...

Visual navigation methods become more and more hot issues for the vehicles. Computer vision has been applied to Dead Reckoning (DR) for land vehicles successfully. Based on the principle of DR, computer vision is used to calculate the azimuth information. And displacement information from camera could...

DXF format file is a standard format of the ASCII text file, the CAD graphic data is saved accurately. A method of NC program is proposed based on DXF file in this paper, the valid data is extracted from AutoCAD DXF document in the graphics file (including straight line, circle, circular, elliptic arc,...

PV nonlinear characteristics caused by complex external environment and the complexity of PV maximum power point locations distribution influence the design and optimization of photovoltaic maximum power tracking algorithm. Based on PV equivalent circuit model, unknown parameters of PV model are solved...

A method to evaluate fluctuation characteristics of daily solar irradiance was introduced based on theoretical solar irradiance. Process feature of daily solar irradiance were analyzed. Observed daily solar irradiance of 10 days in Beijing was tested to demonstrate the effectiveness of this method. Result...

Building a visualization algorithm platform is the first step and very important part of computer graphics research. In this paper, we describe a new method to implement computer graphics algorithm based on Autodesk Maya. By creating the node is to be integrated directly into the Dependency Graph, we...

Along with the rapid development of Internet, network security has become one of high-profile issues in the current life. In this paper, the problem of instruction detection based on artificial immune system model and the key technologies negative selection algorithm(NSA) are discussed in detail, by...

The fault diagnosis problems for Networked control systems with multiple packet loss is studied. Residual model is designed to meet the minimum system implemented. By choosing the appropriate Lyapunov function, the sufficient conditions for the robust stochastic stability of the filter fault diagnosis...

In order to avoid overheating due to bus power supply system that will cause major accidents, we need to monitor the temperature of high-voltage switch cabinet in the narrow space. This paper designs a wireless intelligent bus temperature measurement system based on Zigbee networks. The application of...

In the health management of battery, cycle life prediction is an essential component. Before battery fail, the End-of-Discharge Voltage (EODV) reduce with the use. This paper proposed a multi-phase degradation model of EODV through failure mechanism analysis to evaluate the degree of degeneration of...

China's corn straw resources are very rich, the development of corn straw application technology industry has become a hot spot. In this paper, the present situation of comprehensive utilization of corn straw in China is summarized, including the utilization of corn straw as fertilizer, feed, raw material,...

Sparse representation has been extensively applied to image recognition, while learning appropriate dictionaries for image content representation plays a critical role in it. An approach to simultaneously learn a common dictionary and multiple class-specific particular dictionaries achieves state-of-the-art...

Oil shale as the petroleum alternative is widely distributed in China, the total oil shale resources and potential shale oil resources are estimated at 719.937 billion tons and 47.644 billion tons, respectively. Shale oil and gas can be obtained through the pyrolosis of the oil shale. In order to study...

Volatiles, sulfur, nitrogen and other impurity atoms have released in the process of bituminous coal retorting and high-quality Lantan can be obtained. In order to investigate the feasibility of Lantan to combustion as a clean fuel instead of raw coal, this paper selects several representative coals...

This paper conducts a research about digital display of “ Nanling minority costumes” of Hezhou University Museum. Sufficient basis for the work in the feasibility study and needs analysis, a digital display design is proposed. This design refers to clothing patterns design process, user interface design...