Jiachen Hou

Modeling and analysis of information dissemination mechanism of social media

With the fast development of Internet and data volume increase in Internet, Internet is playing more important role in information spreading in recent years. It is reported that social network is a typical complex network expressed with scale free degree. Emergency cases are happening more and more often in China and all over the world, the governments has realized that it is necessary to monitor and manage the information spreading on social network. In this paper, a new experiment platform frame, which is based on SPA (Spreading Activation) model and social centrality, is proposed to validate the information spreading speed in social network, to help the administration department to manage social network more efficiently.

A new B2B platform based on cloud computing

With the fast development of Internet and its data scale, B2B (Business to Business), whose speed and high availability advantage is based on Internet, is eroding more and more market share of traditional business. In recent years, the new data processing technologies, such as cloud computing, assure the enhancement of computers computing capacity; it has become possible for researchers to process and analyze the massive business data, including large scale customer data, and large scale commodity information. A new B2B platform frame, based on cloud computing with less running time and better response efficiency, is proposed here to promote transaction handle efficiency. By adoption of complex network theory and cloud computing technology, the new platform has been evaluated to decrease transaction handle time, and make more benefits.

Design and development of material management system for power enterprise group

With the fast development of the market economy in China, the material management of the Power Enterprise Group has changed and met many challenges. On the other hand, with the fast increase of Internet and data scale, some problems of enterprise material management can be solved by using IT technologies, such as database. For examples, it can help enterprises to develop the suitable management systems, so as to improve the management level and the enterprises competitiveness. In the paper, compared with the traditional material flow management, a new flow model management was proposed for the complex management system of Power Enterprise Group, and material management system are designed and developed to realize the unified management on three tiers, i.e. Headquarter, Distribution management centers and Local power plants.

A kind of online power materials supermarket system

With Chinas rapid economic development and improving the level of the socialist market economy and the deepening of economic reforms, the materials management and logistics management mode, which relied on state-owned capital and enterprise group support, are facing new challenges. By comparing the development status and trend of the related domestic and foreign power enterprises, new online supermarket system for power materials is proposed in this article, which is based on e-commerce transactions mode, and its system framework is designed, the effectiveness of the design program in reducing enterprise material distribution, transport, warehousing, actual operation cost is validated by actual project implementation. So, the online supermarket can improve circulation efficiency of power material, and the whole system efficiency.

Smart cloud-based platform for construction sites

This paper discusses the concept of smart construction site, summarizes the smart construction sites content and its core technology, and cloud computing platforms architecture is proposed in order to realize the construction sites smart management and control, and intelligence services. Mainly discusses how to effectively collect and use construction sites big data, meets the high efficiency of construction sites administration, business management, service applications needs, and gives the smart construction sites cloud platform framework, put forward the smart construction sites application system solutions, lists some typical applications, finally lookouts smart citys good prospects for the future.

To enhance power distribution network management of local power service enterprise by using cloud platform

The availability of new technologies in the areas of digital electronics, communications, internet, and computer technologies opens a door to build a smart grid, which can increase significantly the capacity, services and intelligence of power systems. This paper proposes a power distribution network management cloud platform based on Tekla Xpower. Proposed system can support the implementation of current power grid and/or the coming smart grid. Utilizing the existing computing and storage installations, cloud platform can integrate the existing resources to improve the computation and storage capacities, the data security of the entire system, and can increase application intelligence, service quality and decision-making capability as well. The four layer architecture of cloud platform is designed, and a pilot case study for DMS is provided.

Vulnerability analysis of smart grid based on complex network theory

Smart grid has been widely acknowledged around the world. The rapid development of complex network theory provides a new perception into the research of smart grid. Based on the latest progress in the field of complex network theory, smart grid can be treated as small world networks. This paper examines the tolerance of smart grid against attacks to analyze its vulnerability, and proposes a technique to study the relationship between the electric betweenness and the reliability of smart grid. Based on these researches, the specific concept of vulnerability investigation to indicate smart grid is clarified. Furthermore, the proposed method will be investigated by an IEEE test system in contrast with the result from actual concept in power grid to indicate its effectiveness.

Construction of Artificial Grid Systems Based on ACP Approach

Modern power grids are typical multilevel complex giant systems consisting of physical infrastructures, human operators, and financial resources, involving economic, social, ecological, climatic, and human factors. The conventional analytical methods and simulation systems cannot provide sufficient guidance for their operation and management, because they are mainly based on physical models, natural phenomenon, or other existing control methods, which are based on reductionism. ACP approach, mainly consisting of Artificial systems (A), Computational experiments (C), and Parallel execution (P), which is based on holism and complex system theory, has its specific advantages in the research on power grids. In this chapter, the ACP approach is applied to build up artificial grid systems by using multiagent complex networks. With the help of the artificial grid systems, the control of actual power grids, scheduling, optimization, and management can be improved further by providing theoretical guidance and technical support for the rolling optimizations in normal situations and emergency management in abnormal situations. As an application, an artificial grid system constructed with actual data from North China power grid is simulated and its vulnerability is tested under random, dynamic, and static attacks. The results show that the system is very robust against random attacks and suffers worse destruction when the nodes or lines with higher betweenness or degrees are maliciously attacked, and the betweenness parameter may be sensitive than the degrees, which implies that betweenness can be more important in the architecture of power grids. The artificial grid systems can also provide theoretical guidance and practical support for the research of smart grid.