نتایج جستجو برای: online system
تعداد نتایج: 2428694 فیلتر نتایج به سال:
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This study evaluated two different types of online information retrieval (IR) systems: online databases and Web search engines, in terms of user generated criteria. It also compares four types of Web search engines: directories, search engines, meta-search engines, and specialized search engines. The results show that three elements are essential to users in the evaluation of online IR systems:...
The progress of technology, the expansion of the Internet, and the emergence of online social media have created an appropriate infrastructure for communication and transfer of experiences. These environmental changes have transformed customer relationship with firms and have forced them to provide online services. The purpose of this paper is to develop a comprehensive model of customer loyalt...
this paper tries to study the complex relationship between religion, popular culture and the internet. the internet not only prepares some facilities for religion, but also it’s a site for a new interaction between religion and popular culture. first, the paper points out five features of the internet which help to extend and promote the religious communication in the cyberspace: 1. deterritori...
background: the internet is a phenomena that changes human, specially the younger generation’s, life in the 21st century. online communication is a common way of interacting among adolescents who experience feelings of social anxiety. the aim of this study was to investigate the relationship between social anxiety and online communication in adolescents. methods: three hundred and thirty studen...
In this paper, an adaptive nonlinear controller is designed for rotor Surface Permanent Magnet Synchronous Motor (SPMSM) drive on the basis of Input-Output Feedback Control (IOFC), and Recursive Least Square (RLS) method. The RLS estimator detects the motor electromechanical parameters, including the motor iron loss resistance online. Moreover, a Sliding-Mode (SM) observer is developed for onli...
In this work, an improved single-column chromatographic (ISCC) separation process is proposed. The term `improved' refers to both conceptual and physical modifications compared to the available single-column processes, including a novel fraction collection scheme and allowing overlapped peaks from adjacent cycles. Also the fraction collection mechanism was modified in order to facilitate online...
In this paper a new type of neural networks known as Least Squares Support Vector Machines which gained a huge fame during the recent years for identification of nonlinear systems has been used to identify DC motor with nonlinear dead zone characteristics. The identified system after linearization in each time span, in an online manner provide the model data for Model Predictive Controller of p...
It is difficult to control the movement of the robot arm due to its nonlinear structure. PID controller is still in the world because of its simplicity in designing this controller as the main controller. The nonlinear control technique is very complicated, and this is not very interesting in the controller. While fuzzy control has a better performance, it incorporates a fuzzy control with ...
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