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Internet and database technology provide the conditions for us to learn human behaviors empirically. Exploring these behaviors is important for us to understand internet users' surfing habits, and to set the stage for better research on social dynamics closer to reality. In this paper, we explore the Internet users' post and reply behaviors et al. in an internet forum, Tianya. Statistical analysis...
In many applications it is necessary to be able to classify images in a database accurately and with acceptable speed. The main problem is to assign different images to right categories. The later problem becomes more challenging while dealing with large databases with many categories and subcategories. In this paper we propose a novel classification method based on an adopted hierarchical Dirichlet...
Spectrum sensing is one of the most important tasks of cognitive radios (CRs) in future wireless systems and of user equipments (UEs) in next generation wireless networks (NGWNs). Therefore, deciding whether a specific portion of radio frequency (RF) spectrum is occupied or not is of paramount importance for all sorts of future wireless communications systems. In this study, a spectrum sensing method...
Cognitive radio (CR) technology has been considered promising to enhance spectrum efficiency via opportunistic transmission at link level. To make CR useful, networking CRs to form a cognitive radio network (CRN) is able to support end-to-end transmission from CR source to CR destination. However, the opportunistic nature of CR link for interference avoidance to primary users degrades the quality-of-service...
The goal of this paper is to introduce a statistical approach for modelling antennas behaviour in the vicinity of the human body. A very preliminary model based on geometrical optics has been developed, and calculations have been performed for parallel and perpendicular polarisations, for 0.915, 2.45 and 5.8 GHz, for various human body tissues, and for several antenna locations on the body. The statistics...
In this paper, we propose an interference aware throughput maximizing scheduler for cognitive radio networks (CRNs) as part of a MAC layer resource allocation framework. In the considered CRN scenario, the cognitive users with multiple antennas are coordinated by a centralized cognitive base station. We evaluate the performance of our proposed scheme using analysis of variation (ANOVA) technique....
In this paper indoor wireless Infrared (IR) technology for healthcare monitoring is studied. Monitoring provides a continuous and reliable vital sign measurement to secure patient staying in the hospital. Considering that patient moving is inevitable, we focus on a mobile IR channel based on diffuse propagation. A model of mobile channel is developed through the study of statistical distributions...
Performance bounds provide a solid theoretical ground for comparing different localization methods. Similarly to the actual performance, they depend on two factors, namely the accuracy of the available data that are used for localization and the geometry of the network. While the impact of the accuracy of the available data has been studied extensively, the literature on the impact of network geometry...
Traditional method to assesse the equipment support operational skill is by locale examining and examinant experience, it is presented of evaluation method based on traininging process data and k means clustering, and a calculating case is validated. The case shows the arithmetic is used to support operational skill evaluation, whose indexes are quite comprehensive. Historical data of daily traininging,...
According to expressway traffic features, heavy traffic, network fees, closed-end management, the author proposed one method which used to transportation volume Statistical projections by the data from toll station weight charging system. Secondly, the expressway traffic statistics information system is designed using the three core modules which are data cleaning, data projection and map showing...
Due to the features of unconventional emergency itself, “Scenario-Response” is regarded as a more effective emergency management mode to unconventional emergency. The whole process of disposal assessment is an important basis for relief decision. This paper describes the scenario-based assessment of whole unconventional emergencies disposal process (pre-disposal, the medium-term disposal, post-disposal),...
Management of traffic incident is an essential part of emergency management. Impact analysis of incident becomes more and more important in the operation of Intelligent Traffic System. This paper uses flow data collected from loop detectors to analyze the impact of incident in urban traffic system. A complex network model using correlation coefficient as the edge weight is constructed. Then, the random...
This paper explores website link structure considering websites as interconnected graphs and analyzing their features as a social network. Factor Analysis provides the statistical methodology to adequately extract the main website profiles in terms of their internal structure. However, due to the large number of indicators, a genetic search of their optimum number is proposed, and applied to a case...
Researched and developed the software system of Information Management and Decision Support System of the hidden danger troubleshooting of Coal Mine. By using the technology of collaborative software to realize fast circulation of information, dynamic tracking, rapid feedback, and closed-loop management of transaction processing for the hidden danger, and by applying the technology of data mining,...
In this paper, we used X-Means clustering algorithm, incorporated data images from a so-called Iterative Data Image Rotated Bar Graph (iDIRBrG) method (formerly referred as BC method) and used Vector Fusion Visualization to achieve better traffic data analysis results compared to our previous work by improving how data signatures are constructed from the raw data set. By doing so, we effectively identify...
According to the precise demands of the management for the social statistics of road transportation volume, this paper gave the vehicle sort, and sub-category of goods of highway freight transportation statistical projection method. To improve the timeliness and accuracy of the transportation investigation and statistics, this paper designed the regional highway traffic statistics business processes,...
Harbin is regional central city of Northeast areas of China, and enters the fast industrialization and urbanization stage gradually. In order to resolve problems of sustainable development as well as raise the level of sustainable development, we need to appraise the present degree of sustainable development, induce its change characteristics. Through establishing evaluation system including economical,...
Given a dataset comprising a temporal sequence of communications between actors, how can we visualize the `flow' of communication over time? Current practice transforms the dataset into a dynamic graph - vertices represent the actors and directed edges represent the communications. The directed edges are added and removed over time. There are then several approaches to visualizing dynamic graphs that...
In this paper we present a statistically tested evidence about how quality and success rate are correlated with variables reflecting the organization and aspects of its project's governance, namely retrospectives and metrics. The results presented in this paper are based on the Agile Projects Governance Survey that collected 129 responses. This paper discuss the deep analysis of this survey, and the...
Extremist political movements have proliferated on the web in recent years due to the advent of minimal publication costs coupled with near universal access, resulting in what appears to be an abundance of groups that hover on the fringe of many socially divisive issues. Whether white-supremacist, neo- Nazi, anti-abortion, black separatist, radical Christian, animal rights, or violent environmentalists,...
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