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With the popularity of mobile Internet and the rapid development of data mining, we can collect users' behavior trajectory and find regularity from a large amount of data. In this paper, we use the WiCloud system to obtain students' trajectory information, and propose a spatial-temporal clustering method based on K-means algorithm, which clusters students into three types: study-oriented, enclosed...
Information and Communication Technology is always walking in the forefront of human education. Now, it is the stage where human education has to adapt itself to the developing technologies. In 2016, the Natural Science Foundation suggested that people need to use the human-technology to improve and extend the human learning. This paper provides the concept of Software Defined Class (SDC), where the...
A smart campus refers to a campus where modern information and communication technologies bring more convenience to campus life, assist campus users to improve and more efficiently accomplish their daily activities, and enhance social interactions. Regarding the high demand of services such as mining campus users' semantic information, building augmented reality assisted mobile campus and smart class,...
With the rapid development of mobile Internet, the ways in which users access the network become diverse, which provides much convenience for us to collect huge amount of users' behavior information. In this paper, we combine data acquisition based on wireless access and brand analysis innovatively. This paper analyzes proportions of mobile terminal brands on campus using the data collected from WiCloud...
This paper presents a method for improvement of the dynamic characteristic for V/f controlled induction machines. The basic control structure is the open-loop V/f control with voltage-drop compensation and slip compensation. Additionally, a new current damper control is utilized for suppressing the dynamic oscillation. The improvement of the current control is based on complete modal synthesis. In...
The anonymity and dynamic characters of Peer-to-Peer (P2P) system makes it an ideal medium for selfish and vicious action. In order to solve this problem, P2P reputation systems are proposed to evaluate the trustworthiness of peers and to prevent the selfish, dishonest, and malicious peers' behaviors, which collects local reputation scores and aggregates them into the global reputation. In this paper...
Wireless Sensor Networks (WSNs) are widely applied to monitor environments such as military surveillance and reconnaissance. However, individual sensor nodes are vulnerable to some types of attacks because they are usually deployed in open and unprotected environments. Once sensor nodes are compromised, malicious nodes can send erroneous data to the base station, and possibly mislead monitoring results...
In order to increase the precision and simplify the process, a novel control strategy was proposed for the buck converter, which is based on the inverse system method aiming at the nonlinear identity of the mathematic model of the buck converter using the state-space average modeling method, a pseudo-linear model is given based on the inverse system method, then a Variable Structure Controller is...
The slip frequency vector control of the asynchronous motor does not need the complicated flux detection, thus it is widely used in the speed control system which works under baseband. However, the shortcomings of the system are the large steady-state error, the long rising time and so on. Based on these issues, the paper presents a model-free adaptive controller which is introduced into the original...
This paper proposes modified Multi-Objective Particle Swarm Optimization (MPSO) algorithm based on Pareto solution to overcome the conventional MPSO algorithm can easily fall into its local maximum value and improve the diversity of solution set. This algorithm is composition of a modified Tabu Search with Multi-Objective Particle Swarm Optimization (TSMPSO). With this algorithm Establishing the memory...
Co-word analysis is a typical kind of content analysis, and also it is an important content mining method. It has been widely used in medicine, chemistry, artificial intelligence, software engineering, information science and information system. By the use of SPSS software, this paper analyzes co-word of the articles on UML issued in the periodicals from year 2001 to 2008 collected by CNKI database...
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