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.
Community Question Answering (CQA) sites have become valuable repositories that host a massive volume of human knowledge. How can we detect a high-value answer which clears the doubts of many users? Can we tell the user if the question s/he is posting would attract a good answer? In this paper, we aim to answer these questions from the perspective of the voting outcome by the site users. Our key observation...
Based on the principle of mean reversion and RBF neural network, this dissertation designs an arbitrage system of Chinese precious metal futures market by means of C++. It proves that it is technically feasible to apply quantitative investment to domestic precious metal futures trading on the basis of the actual data obtained in the application of the quantitative arbitrage system in Shanghai Futures...
In multivariable processes, control structure selection represented as the pairing of manipulated variables and controlled variables is a major concern during the design of multi-loop regulatory PID control system. Each pairing method has its application scope, and it is necessary to analyze and evaluate the closed-loop application effect of the system pairing. Based on the dynamic transmission ratio...
Loop pairing is a major concern in the stage of decentralized control system design of complex industrial processes. Without regard to the effects of the dynamic interaction, RGA was transformed to other impoved dynamic relative gain array. A new approach to defining a new dynamic RGA (s-DRGA) is presented based on multivariable state feedback predictive control(SFPC). The approach assumes the availability...
Aiming at the security problems existed in most identity-based threshold ring signature (ITRS) schemes, including poor security and inefficient in verifying, a new ITRS scheme is proposed. We significantly enhance the security of signature key by using bilinear pairings and secret sharing techniques. Our analysis indicates that the proposed scheme achieves unconditional anonymity and unforgeability...
In this paper, it firstly establishes the assessment contents on uncertainty of multi-scale representation of point cluster around the process of multi-scale representation of point cluster and its spatial analysis, which includes positional uncertainty and uncertainty of spatial analysis conclusions; the assessment index K and the quantitative model of positional uncertainty related to point cluster...
Through the questionnaire investigation, author of the paper found the following factors determining the decision-making of career of college students: value system or expectation of parents, teachers, classmates, current posts of parents and counselors. The influence of these factors is various in gender, finance and social status. Meanwhile, 5 suggestions are offered to the education of college...
This paper has analyzed the definition of quality of college graduates' employment, revealing the current situation and the main causes. Correspondent counter-measures are provided at the same time, including enhancing employment guidance for graduates, improving graduates' employability, establishing correct mores and concept of employment and intensifying macro-control of the government.
Based on the analysis of the current administrative staff of colleges and universities, there is the issue of performance appraisal based on the targeted colleges and universities, who put forward suggestions to solve problems with staff performance appraisal measures: to define a clear purpose and focus of performance appraisal; to conduct a detailed analysis of the accuracy of the positions; performance...
Through compiling the evaluation scale of the junior middle school teachers' teaching ability in the classroom by ourselves, this study combines the methods of cluster sampling and typical sampling, and makes an evaluation towards 78 junior middle school teachers' teaching ability in the classroom in Handan city. The conclusion is that the study has checked the reliability and the validity of the...
As market competition continues to intensify, more and more enterprises have empowered their own salespeople. And managers in enterprises are more concerned with the issues how they determine whether salespeople in enterprises suit to be empowered and how they evaluate salespeoplepsilas empowerment readiness. This paper establishes index system of salespeoplepsilas empowerment readiness in enterprises,...
A novel semi-blind defocused image deconvolution technique is proposed, which is based on RBF neural network and iterative Wiener filtering. In this technique, firstly a RBF neural network is trained in wavelet domain to estimate defocus parameter. After obtaining the point spread function (PSF) parameter, iterative Wiener filter is adopted to complete the restoration. We experimentally illustrate...
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.