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We consider a network, where multiple source–destination (S–D) pairs communicate with the aid of a half-duplex relay node (RN), which adopts decode-and-forward (DF) relaying and superposition modulation (SPM) for combining the signals transmitted by the source nodes (SNs) and then forwards the composite signal to all the destination nodes (DNs). Each DN extracts the signals transmitted by its own...
For hyperspectral data classification, feature reduction techniques have become an apparent need to extract information from original data. In this paper, we introduce Locality Sensitive Discriminant Analysis (LSDA) to perform feature reduction for classification of hyperspectral imagery. By preserving both the discriminant and local geometrical structure in the data, the proposed method can obtain...
Sale of ticket, the very first stage in rail service for passengers, is critical to the management of the whole system. Based on information of the ticket office at Shijiazhuang South, a queuing simulation system is built. Three indicators, namely usage level, number of customers and queuing time, are obtained by running simulations based on different parameters during peak and off-peak periods. Therefore,...
In order to develop the microwave and millimeter-wave vacuum electronic radiation source devices with field emission cold cathodes, an electron-optical system based on carbon nanotube cold cathode is investigated in this paper. A magnetron injection electron gun is designed for a 220GHz TE03 mode gyrotron. And the preliminary experiment results of the carbon nanotube cathode show the maximum beam...
For asynchronous transmission, the scheme with fountain codes is more attractive. In multi-relay system, each relay encodes with fountain codes and transmits encoded packets independently. A practical family of Raptor codes is proposed, which combines flexible pre-code with short-length LT codes. Simulation results show that the transmission scheme with our proposed fountain codes can achieve better...
Configurable process models can be used to provide information on business processes for different user groups in an appropriate and efficient manner. It promotes the reuse of proven practices by providing analysts with a generic modeling artifact from which to derive individual process models. Before a configurable business process being configured into a concrete business process model, the variability...
A novel computational technique is proposed for analysis of electromagnetic problems with nano structures. Our method is based on integral solvers in the complex frequency domain and fast inverse Laplace transform. The wavelength and time responses obtained by the proposed method are investigated.
GUI (Graphical User Interface) testing is complex and inefficient in nowadays software testing. This paper proposed a framework for automated GUI test case generation. The framework includes a reverse engineering of executive GUI to create GUI information and event-flow model. According to these information and model, an ant colony algorithm is applied to generate test cases. Our study shows that...
Analog-to-digital converter (ADC) is a vital component for modern electronic systems, but designing an ADC usually takes much time and effort. Though several synthesis methods have been presented for analog circuits, there exists limited works focusing on ADC design automation. In this paper, we propose a systematic sizing methodology to minimize the power consumption for successive approximation...
A regenerative braking system, which could restore kinetic energy and potential energy to a battery or any other forms of power during braking, is a special system for electric and hybrid electric vehicles. However, the large current produced by the generator during braking would affect battery performance and shorten battery life. A hybrid-power system is an excellent energy storage system, in which...
Cooperative transmission is an efficient way to combat fading for wireless communication. In this paper, a bandwidth-efficient multi-user cooperation scheme is proposed, that is based on TPC(Turbo Product Codes)-BICM(Bit-Interleaved Coded Modulation). In the multi-user cooperation, we use distributed transmission to achieve diversity gain. The bit error rate(BER) performance is discussed and BER upper...
The widespread use of e-readers provides a useful tool to students. This has brought us to explore the essential factors that affect student's willing of using new technology in the higher educational classroom. To understand the relationship between reading habits and e-reader functions, we applied grounded theory to analyze data. Results suggest that users' expectations and operation are affected...
In ASP.NET, Programmers maybe use POST or GET to pass parameter's value. Two methods are easy to come true. But In ASP.NET, It is not easy to pass parameter's value. In ASP.NET, Programmers maybe use many methods to pass parameter's value, such as using Application, Session, Querying, Cookies, and Forms variables. In this paper, by way of pass value from WebForm1.aspx to WebForm2.aspx and show out...
A new algorithm of fuzzy support vector machine based on niche is presented in this paper. In this algorithm, through comparing samples niche with class niche, the method of simply using Euclidean distance to measure the relationship of samples and class in the traditional support vector machine is changed by using the minimum radius in class niche, and the disadvantages of traditional support vector...
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