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This paper presents a path planning method based on Pythagorean Hodograph (PH) curves and harmony search algorithm for unmanned-aerial-vehicles (UAVs) in complex environments, especially in urban environment and mountainous circumstances. The flyable paths are tuned to meet spatial demands, satisfy kinematical and dynamic constraints of the UAVs, and guarantee no collision course between any two vehicles...
In this paper, we analyze both BMH algorithm and QS algorithm, focus on the improvement of QS, and present FQS algorithm which can apply to HTTP data reduction. For building this algorithm, we considered character features of pattern strings in HTTP application data, improved the collating sequence of characters in matching process, and had the bad characters jumping strategy improved for increasing...
With the rapid development of social network analysis (SNA for short), people increasingly pay attention to segment micro-blog users in the SNAs. It's a new trend on classic marketing technique segmentation. In the case of micro-blog, it's useful to get a group of users with a common set of characters and learn what's on their mind. As is usually the case, the standard for measuring the category of...
By illuminating the problems of previous reliability evaluation algorithms, and according to the actual demands of engineering application, an improved reliability evaluation algorithm for distribution network is put forward in this paper. This algorithm needs no network equivalence process, and its principle is clear and succinct so as to easy programming. When only one load point is concerned, it...
An improved edge detecting algorithm based on mathematical morphology and wavelet transform is proposed to overcome the limitation which embarrasses the performance of the traditional mathematical morphological methods. In the wavelet domain, the low-frequency sub-image edges are detected by solving the maximum points of local wavelet coefficient model to restore edges, while the high-frequency sub-image...
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