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In this paper, the free vibrations of incomplete toroidal shells with different meridional boundary conditions are studied based on the linear Flugge thin shell theory. The cross-section of toroidal shells is assumed to be a closed circle. The circumferential modes are represented by a series of trigonometric functions and the meridional modes are expressed as a combination of beam functions which...
The component mode synthesis (CMS) technique has been widely used in engineering for its efficiency in dynamic analyses. The principle of CMS with fixed interfaces is introduced, the detail steps in calculation are summed up, and the flow chart of algorithm is also given. The dynamic properties of elastic tube bundles are investigated with the application of CMS. The effect of numbers of nominal modes...
Topic description is as important as topic detection. In this paper, we propose a novel method to describe Web topics with topic words. Under the assumption that representative words exist in important sentences and have high probability of occurrence with other representative words, two graphs are built, one of which represents the relationship for sentences, the other for words. Considering a topic...
Using multimedia sensor nodes can enhance the capability of wireless sensor networks (WSNs) for event description. In some scenarios, e.g., an erupting volcano, the WSNs are not deployed to work for long time. Instead, the WSNs aim to deliver continuous and reliable multimedia data as much as possible within an expected lifetime. In this paper, we focus on the efficient multimedia data gathering in...
As semiconductor technology continues to evolve, the chip temperature increases rapidly due to the exponentially growing power consumption. In the meantime, the high chip temperature increases the leakage power, which is becoming the dominate part in the overall power consumption for sub-micron IC circuits. A power/thermal-aware computing technique becomes ineffective if this temperature/leakage relation...
Group mobility is prevalent in many MANET applications, such as disaster recovery, military actions, etc., and group partitions are unavoidable under such dynamic network. Group partitioning may result in frequent link disconnections, which hence affects the inter-group communication. In this paper, we introduce a framework for predicting potential group partitions in MANETs such that remedial actions...
Network coding is a new proposed way for data transmission over networks, allowing each intermediate nodes to perform encoding. This transmission scheme, totally different from traditional routing one, was proved to be able to obtain larger capacity, higher efficiency, robustness and security for the network. In this paper, we focus on certain security issue, give an overview for network coding, and...
The downlink capacity and coverage of mobile WiMAX system with array antenna is evaluated based on given interference analysis with multi-cell deployment. The link budget model with array antenna is also given. The results show that the capacity and coverage of mobile WiMAX based on the link level performance with CTC encoding.
In this paper, a new image classification method is developed. This approach applies graph decomposition and probabilistic neural networks (PNN) to the task of supervised image classification. We use relational graphs to represent image. These graphs are constructed from the feature points of images. Spectra of these graphs are obtained as feature vectors for classification. PNN is adopted to classify...
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