In this paper, we conduct theoretical research on spread spectrum communication technique based on binary offset subcarrier frequency sweep and related methods. At present, most of the spread spectrum signal generation did not give the effect of channel filter, and a large number of related studies have...

In the experiment, the grasshopper in Siberia is taken as the research objec. The comparison of the genomic DNA of dried and soaked in alcohol samples are extracted by the method of saturated NaCl, CTAB and SDS. Experimental results show that SDS method brings the total DNA, saturated Nacl law and CTAB...

The authors propose a detection scheme called Stokes vector direct detection (SV-DD) to realize high electrical spectral efficiency and cost-effective optical communication, which is more suitable than coherent detection for short-reach. At reception, the signal is detected in Stokes space. In this paper,...

A multiband rectangular microstrip antenna is designed and fed by microstrip line, which consists of three radiating elements operating in three frequencies at 2.4 GHz, 3.6GHz and 5.6GHz. This antenna is implemented on FR4-Epoxy dielectric substrate with relative permittivity of 3.38, substrate thickness...

To reduce the size of wireless equipment, an ultra wide band (UWB) antenna is designed in this paper, and much smaller size is implemented. The antenna has a circular slot on the radiating element for wireless applications. By using microstrip structure, the proposed antenna is designed to work on a...

In order to implement small size and good performance of wireless devices, microstrip patch antenna is designed using high frequency structure simulator software for wireless communications. The antenna is working with triple bands in the range of 1.5GHZ to 4GHZ as the frequency sweep of the design....

Based on the current situation of mobile e-commerce both at home and abroad, this paper indicates that as an important process of mobile e-commerce, the quality of mobile payment will directly affect the expansion of mobile e-commerce. Classified according to the business transactions amount, mobile...

The data collecting method has been studied. The use of large-scale field programmable gate array (FPGA), high-precision programmable A/D converter initialization and data reading have been achieved, in order to obtain a rapid acquisition SINS accelerometer data. The temperature changes will affect the...

In today's rapid development of Internet Business, people's awareness of e-commerce is more profound than that in the past, and there have been some representative e-commerce enterprises in China, who are influencing the transformation of other companies; an industry’s rapid development is often caused...

This study mainly isolated and identified a Streptococcus suis strains by the methods of disease material separation, microscopic examination and PCR identification, drug sensitivity test, biochemical test, animal attack toxicity test and so on. Get A preliminary assessment of its virulence and drug...

The research of sedimentary microfacies of PuTaoHua oil layer in GuLongNan region is based on high resolution stratigraphy and sedimentary facies research,On the theoretical guidance of logging geology, sedimentology,establish GuLongNan area high resolution sequence stratigraphy framework, thus to study...

Electromagnetic speed regulation coal cutter has simple structure and high performance cost ratio, and the PID or improved PID controller can enable stable and high efficiency operation of coal cutter. Since the underground coal mine has complex and uncertain operation condition, the coal cutter during...

Information communication is the most important method in the development cycle of information system development project, especially for some large and medium-sized information system development project organizations, due to the large scale of the organization, the people and departments institutions...

This paper mainly discussed the railway signal computer interlocking system, including the basis of computer interlocking system, computer interlocking principle, fault of computer interlocking system maintenance. The study is focused on the working principle of the computer interlocking, including its...

With the continuing growth in influence of near surface geophysics, the research of the surface geophysics is of great significance. Researchers want to understand the complex subsurface with gravity and magnetic data and inversion is a powerful tool. In this paper, researchers introduced how to formulate...

The article first makes a simple overview of computer virus definitions, characteristics and classification. Then research on the virus detection method based on computer virus invasion pathways, including: appearance inspection method, the feature code method, system data comparison method and software...

The vehicle steering performance directly affects the vehicle’s flexibility handling stability and economy for use. By changing the wheel angle of the axles except the front axle, the multi-axle steering technology improves the vehicle’s flexibility and mobility at low speed when turning and improves...

Today, with the rapid development of science and technology, knowledge and wisdom play greater roles and the evolution of artifacts is faster. The speed of artificial evolution cannot be followed by natural evolution. As a kind of new intelligent information processing technology, granular computing...

With the rapid development of modern science and technology, achievements of high technology have also been applied to educational field. Since the beginning of 21st century, informatized network education, a new model symbolized with Internet, has greatly influenced educational methods, contents and...

Nowadays with the development of economy, more and more schools and establishments are building their own studios. However, due to various reasons, the sound quality of a studio may be not completely satisfactory. The professional instruments for testing the sound quality of studios are very expensive,...

This paper mainly to explore the security technology of computer network. Firstly the network security was briefly introduced, and then we studied the main threat to the network existing. In response to these threats, we probe into the network security measures. We analyze the security problems of network...

From the definition and the invasion of intrusion methods, this paper summarizes the root cause of network security incidents. Then various intrusion detection methods are analyzed. Finally the overall scheme of the intrusion detection system is designed and completed the intrusion detection system test.

With the development of modern industry, the pollution problem has become an inescapable problem for urban inhabitants throughout the world. Fog and haze pollution as a serious matter has brought great disaster to human beings and natural environment. This paper explores the impact of smog and haze as...

The advent of the information age and the emergence of enterprise resource planning, all have brought the greatest advantage for enterprise integration of resources; a B2B e-commerce business model has formed and become a main trading method of the business development; in the age of electronic commerce,...

This paper introduces the basic concept of location information and performance analysis of location indicators, classifies the difference of all kinds of positioning methods according to the positioning principle and strategy, briefly introduces and compares the cellular networks with wireless local...

“Software Technology Foundation” is an important basic course of automation major in the proposed university. In order to solve the main problems in experimental teaching of the course, this paper studies how to design a set of experimental teaching software for “Software Technology Foundation” under...

With the vigorous development of intelligent building, the structured cabling system is more and more widely applied. At present, in the process of structured cabling systems engineering design, the construction drawing is basically designed by using the common drawing software such as AutoCAD, in which...

This article first introduced the development background and present situation of the online shopping system, then discusses the system design objectives, system requirements and overall design .This paper discusses the design and implementation of the system in detail. Finally, the online shopping system...

This paper introduces the overall structure of the hierarchical structure and car Android platform of interactive systems, analyzes the system design and implementation process of each function module. The trial was carried out in the HTCS710e mobile phone and Motorola Xoom tabletcomputer, the test results...

The difficulties of wireless sensor data fusion is to switch the sensor cluster state, namely the problem at some point the direction to which the sensor data fusion. First of all, by the acquisition of knowledge in rough set theory, the typical clustering distribution of multiple sensors can be fused as...

Revolution of information technology extends human’s brain, develops human’s ability of acquiring and storing knowledge, accelerates human’s application of scientific technology and improves the efficiency of economic development in human’s society. Information technology industry has become a major...

With the development of modern economy, online transaction occupies an increasing proportion in all transactions. However, China’s e-commerce started relatively late, so its development is not perfect. Therefore, risks in the process of online transaction influence consumers. In China, with the development...

This article describes the data in search results of crawl a crawl Web search engine to build the item repository. These methods make the efficiency of building Q improve and the costs reduce. Examing the questions based on XML storage format also have a very strong compatibility.

Rough set theory has been successfully utilized in a variety of information mining fields. Since the EEG found that many researchers to study the biological signals in electrical brain research, the EEG feature extraction algorithm is a major research content. In this paper, rough set theory is taken...

With the development of information technology nowadays, the analysis of mass data with time features has become possible. EEG feature extraction method is a key element of EEG research, this paper defines a method similarity of feature extraction. Five subjects are used to verify identification studies,...

The alternate directions implicit finite difference beam propagation method is used to analyze the two-dimensional symmetrical multimode interference couplers. The positions of the images at the output plane and the length of multimode waveguide are accurately determined numerically. In order to reduce...

Spread spectrum communication is to use spread spectrum code to modulate the information data to be transmitted in order to realize the frequency spectrum extension, then transmission. The receiver uses the same spread spectrum yards to conduct solution and the related signal processing and restore the...

Music in the Internet Age has changed in communication, creation, artistic style and aesthetic value orientation, and these changes are the product of the development of the modern era, they are the result of science and technology progress, the social and economic development and people's ideological...

The driving circuit for ten high-power white LED bulbs which are connected in series is designed. The core chip used is XLT604 and the peripheral circuits such as rectification circuit, dimming circuit are also designed. The modulation of LED is via the outer control voltage and therefore it belongs...

With the continued construction of information and smart grid for electric power sector, they are entering a big data era. The most immediate priority is to solve the big data storage for the power industry under massive amounts of data. The purpose of big data storage for electric power sector is not...

Acoustic echo is a common phenomenon in voice communication. The interference signal caused by acoustic echo will greatly reduce the quality of voice transmission. Thus, techniques should be applied to diminish acoustic echo. This paper endeavors to introduce the application of adaptive filter in acoustic...

Hydro Turbine Generator Set (HTGS) is an organic entity though it is composed by numerous equipments. However, almost all of those monitors applied in plant operate independently. Data and information from those independent systems lack correlation. This situation makes it difficult to determine whether...

This article makes analysis of the problems in the learning resources organization of current computer basics MOOCs and puts forward the idea of constructing MOOCs resources by using the form of "module-network". At the same time, the plan for studying personalized MOOCs is made for learners in a bid...

Design and implementation of a network video monitoring system, whose master chip is the DM6446 of TI DaVinci series which combines the digital signal processing technology, is introduced in this paper. The hardware of this system is with simple interface and the software is with perfect function. The...

In high Bandwidth Delay Product (BDP) networks, Adaptive congestion Control Protocol (ACP) is emerging as one potential solution for overcoming limitations inherent to the current TCP algorithm, characterized by unstable throughput, high queuing delay, RTT-limited fairness. However, its performance in...

This paper explores a will practice ability of software talents training informatization construction and the combination of the teaching mode, to lower construction cost and cost management to improve the level of development of students and practical ability, but also to teacher training practice ability,...

This paper has introduced the main characteristic and some current re-searches about the inverted pendulum system. A nonlinear mathematical model of invert-ed pendulum is established based on the newtonian dynamics method. Then the design of traditional fuzzy controller is presented, the result of simulation...

Internet of vehicles makes the traffic control become intelligent. In internet of vehicles data exchanging, an important service is to check the OBU-On Board Unit and how to improve the data exchange speed has always been an important research direction. This paper divides the distributed database into...

In order to solve the problem of complex functions and large required memory of mobile phone music player on the current market, a new music player of simple, convenient, less required memory as well as user-friendly is developed. Based on the Android technology, using the Java language and Eclipse programming...

space-time data base is designed aiming to managespace-time data. To get space-time data well under control, the elements of space and time have been introduced into XML data. Different from common data, the space-time operation of the space-time XML data requires taking into consideration the elements...

As the increasing status of electronic resources in university library, and the increasing introduction of electronic resources in university library, it is particularly important to use electronic resource navigation system in university library. This paper discuss and research on the electronic resources...

The more effective platform with unified technology is needed for enterprises to integrate their online businesses so as to support the future development of online businesses. Based on the ASP.NET development technology of dynamic website, the project adopts SQL SERVER2000 as the background database,...

In recent years, due to the breakthrough in 3D hardware graphics technology, the real-time depicted pictures have been increasingly sophisticated, and 3D games have been more diversified and closer to the real world. In this paper, the author used primarily Visual C ++6.0 as a development tool to understand...