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In this paper, we analyzed and expressed the micro-blogging from three elements: information, information subject and information environment based on the concepts and theories related to ecology and information ecology. Then we analyzed the dynamic evolutionary process, the driving force and the status of the micro-blogging big data ecological system based on self-organization theory. On this basis,...
This paper uses log data of teaching and learning activities in a web-based learning platform, selects two universities implementing different online learning promotion strategies as the cases, and conducts the group differences analysis based on the hypothesized structural equation modeling (SEM) to analyze group interactive activities in two universities' online learning environment. The results...
This paper proposes a MAC protocol using multiple control channels for multi-channel ad-hoc network. In the proposed protocol, all channels are divided into some groups. Each group has a control channel. All nodes hops the control channels for searching a receiver. Because of using multiple control-channels, control frame collisions and the effect of searching overhead are mitigated in the proposed...
Considering enterprise marketing complex network with local and world-wide competition, incomplete information and asymmetric characteristics, enterprise marketing complex network withl the bidirectional fitness evolution model is constructed on the basis of the BA model. Using continuum theory and the mean field theory node degree distribution, and calculated its rigorous solution, and derived the...
The topology characteristics of the nodal matrix in power system analysis and the adjacent matrix in graph respectively has been proved to be absolutely identical. According to this feature and modification principles of the nodal impedance matrix, a new tracking algorithm for the state change of the circuit breaker has been built based on the general multiplication and general addition operations...
This paper presents the growth effect of Chinese government non-tax revenue spending on its Gross Domestic Product (GDP) using the variance Decomposition Technique. The results show that Government Purchase (GP) expenditures have a significant explanatory power on the long-run economic growth. Whereas, Government Non-Tax Revenue Expenditure (GNR) and the Government Fundamental Investment (GFI) have...
In superconducting magnetic energy storage system (SMES), the current lead is the conductor that connects the room-temperature power supply and the low-temperature cryogenic superconducting magnet. It is the main source of thermal leakage in the system. In order to decrease the thermal leakage, it is necessary to analyze the thermal loss of the current lead and optimize the lead dimension. Because...
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