The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Based on differential correlation technique, novel fast acquisition algorithm is developed for hybrid direct sequence and frequency hopping (DS/FH) system. Specifically, by using differential correlation for PN code phase and parallel searching for frequency, the fast acquisition is realized. Furthermore, in terms of acquisition time and hardware resources consumption, the proposed differential correlation...
The examinee's shortage of credibility and integrity has hindered the steady and rapid development of the on-line regulating matriculation for graduate student. Many researchers and recruiting departments focus on system setup to strengthen the restraint of the examinee's dishonest behaviour. Being different from it, this paper attempts to research rational system design based on analyzing the causes...
The fierce competition in the market, allowing for the increasing tendency for homogenization, low-cost strategy for many enterprises have come to dead end road. This paper is, in this case, new ideas and new methods for the enterprises to improve product value-added. Analysis of the psychological needs of consumers can be seen that more consumers are willing to pay a higher price for higher levels...
In the late 1970s, the concept of technological innovation systems was formed and established just because national innovation systems theory was put forward. People understanding the process of technological innovation went through the development process as follows: from linear, deterministic model of development, to random model, then to self-organization evolution, etc. The Process of technological...
In the context of the construction of New Countryside, the efforts in poverty alleviation and development are further increasing. However, the regional poverty in rural areas, returning to poverty and other issues still arise from time to time. Based on the status of Laiyuan County, Hebei Province, this paper carries on the field research, analyzes of the basic characteristics of poverty-stricken...
On the basis of the especial demands of sustainable development, and the need of protecting natural resources and environment, this paper provides a mathematical model for the multi-objective transportation problem, introduces the efficient solution, optimal solution and the check vector, and gives a simple algorithm for the multi-objective transportation model.
Oil-gas drilling cost is an important indicator which reflects the economic benefit of oilfield enterprise. Following taking the characteristics of oil-gas drilling cost which belongs to subsidiary of CNPC (China National Petroleum Corporation) into account, determinants concerning oil-gas drilling cost are identified. Bayesian Regularization Back Propagation Neural Network (BRBPNN) is proposed to...
Shanghai Marine economy after years of development, has been involved in many industry, Marine industries to local economic contribution in ascension. This article mainly analysis the industrial competitive strength, industrial competition environment, industrial competition potential of the three aspects, the selection of appropriate indicators, using multi-level index system of Shanghai Marine industry...
As the manufacturing enterprises increasingly pay attention to internal service functions, the internal service of manufacturing enterprise can be regarded as an important part to achieve sustainable competitive advantage and increasingly promote enterprise performance for manufacturers. This paper starts with the concept of the manufacturing internal service which is divided into information processing,...
As the rapid development of the Internet, B2C e-commerce plays the important role in the life. However, the issues of trust block the development of B2C e-commerce. According to the relevant data of 2009–2010 China Internet Development Statistics Report and 2009–2010 online shopping in China Development Report and based on the domestic and international theories, this article established the theoretical...
In this paper, we examine the blind multiuser detection (BMUD) for orthogonal frequency division multiplexing (OFDM) systems with space-time block codes (STBC). The BMUD for STBC-OFDM system has been extensively studied in future communication systems. The proposed receivers implemented by linearly constrained minimum variance filters are designed to achieve this goal. However, the filter suffers...
Electronic commerce is the fastest growing trade method especially in China. Online shopping is becoming a large part of commercial activities. In the C2C transactions, the seller's credit factors on the impact of successful trading are also become important. In this paper, we take the largest online trading platform of China for example, by analyzing the impact of the credit to determine the relevant...
This thesis used the method of system dynamics to draw the affecting factors archetype of network media use, determine three key variables of the cost of media use, education gap and the quality of information, propose the integrated management measurement including financial subsidies and computer skills training and media literacy education based on the analysis of the mechanisms of three key variables...
Enrollment expansion in colleague in China makes higher education transform from superior education to mass education. In the eye of society, college graduates' employability has taken the place of a diploma and become a new standard to measure the quality of university's education. This new standard requires the education model of higher education should make a new adjustment. The introduction of...
Presently, many problems and difficulties still exist in China's energy-saving service industry. Among these problems, insufficient tax incentive mechanism is quite prominent. How to improve tax incentive mechanism for the development of China'senergy-saving service industry is a research topic demanding prompt study. Therefore, in consideration of the reality of China's tax policies and overall development...
Cloud computing will become hot topic as new computational model in the field of IT industry and information science, which follows distributed computing, parallel computing and grid computing. It has a profound impact on the way of living and working for human kind in forthcoming future. This paper briefly introduces the basic essence of cloud computing and information value-adding, and then constructs...
A/D converter and digital signal as an analog signal interface circuit, the data processing has a very important role, A/D converter and microcontroller interface design directly affects the A/D conversion rate and conversion accuracy. To improve the accuracy of ADC conversion, to speed up the pace of research, presented Atmega32 SPI MCU interface and design, and provides software programming, the...
This paper utilizes strategy analysis theory, anatomizing company character from exterior competition and interior superiority angle, through system analysis of exterior competition and interior superiority, finding out feature index. The exterior index includes area distributing, government policy, industry circumstances, IPO data, and market occupying ratio. Interior superiority index includes risk...
It analyzes the non-linear term structure of interest rates of Treasury in Shanghai Stock Exchange, using two-factor Vasicek model and Kalman filter in the state-space framework. The observation errors of one-year and 20-year interest rates are extracted and estimated applying the Archimedean copulas and mixture copula by maximum likelihood estimation. It has shown that the Gumbel copula and mixture...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.