Advanced Research on Electronic Commerce, Web Application, by Zeeshan Sabir, Syed Abdul Rehman Yousaf (auth.), Gang Shen,

By Zeeshan Sabir, Syed Abdul Rehman Yousaf (auth.), Gang Shen, Xiong Huang (eds.)

The two-volume set CCIS 143 and CCIS a hundred and forty four constitutes the refereed complaints of the overseas convention on digital trade, net software, and verbal exchange, ECWAC 2011, held in Guangzhou, China, in April 2011. The 148 revised complete papers awarded in either volumes have been conscientiously reviewed and chosen from a number of submissions. offering a discussion board for engineers, scientists, researchers in digital trade, internet program, and verbal exchange fields, the convention will positioned detailed concentration additionally on points comparable to e-business, e-learning, and e-security, clever details functions, database and approach defense, picture and video sign processing, development popularity, details technological know-how, business automation, method keep watch over, user/machine structures, defense, integrity, and safeguard, in addition to cellular and multimedia communications.

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Extra resources for Advanced Research on Electronic Commerce, Web Application, and Communication: International Conference, ECWAC 2011, Guangzhou, China, April 16-17, 2011. Proceedings, Part I

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The number of iterations plays a vital role in the performance of an OFDM system. 16e(WiMax) the number of iterations has been fixed as 7 in the standard model. We have taken the results for 1, 2, 4, 8 and 20 iterations. e. 64 subcarrier. The performance of the proposed model of OFDM with the four different modulation schemes and changing number of iterations is given in Fig. 8. When compared with Fig. 9 dB at BER 10e-3 and 20 iterations which is due to the implementation of error correcting turbo codes in the proposed model.

12–18, 2011. © Springer-Verlag Berlin Heidelberg 2011 A GA-PLS Method for the Index Tracking Problem 13 Then GA is applied to choose the portfolios that have the smallest PRESS, which means that they have the best prediction abilities. GA-PLS method is useful in variable selection when number of observations is fewer than number of variables. When stocks are regarded as variables, this method is also effective on stock selection. 1 Partial Least Squares Regression Partial least squares regression is a statistical method that bears some relation to principal components regression; instead of finding hyperplanes of maximum variance between the response and independent variables, it finds a linear regression model by projecting the predicted variables and the observable variables to a new space.

It is also belong to cognitive need for students. Later, William&Burden(1997) raised a query about the "Need Theory" on its "grade order", but they admitted its application and rationality. The next important person of autonomous learning is Rogers. He put his emphasis on digging out learning potentials of students. He thought that learning course will be effective only by the active taking part in by students. He also pointed that learning should be based on autonomous learning and the purposes of learning are on being free and self-realization.

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