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Intelligent transportation systems, e.g., Uber, have become an important tool for urban transportation. An important problem is k nearest neighbor (kNN) search on moving objects with road-network constraints, which, given moving objects on the road networks and a query, finds k nearest objects to the query location. Existing studies focus on either kNN search on static objects or continuous kNN search...
Radviz is a radial visualization technique which maps data from multiple dimensional space onto a planar picture. The dimensions placed on the circumference of a circle, called Dimension Anchors (DAs), can be reordered to reveal different patterns in the dataset. Extending the number of dimensions can enhance the flexibility in the placement of the DAs to explore more meaningful visualizations. In...
With the constant development of economy in our country, food production enterprise credit consciousness and quality level had the very big enhancement, but the phenomenon of lack of credit is still outstanding. Food production and the establishment of the enterprise credit evaluation system is a system engineering, can fundamentally to ensure food safety in our country. This article from the perspective...
Existing block-based parallel file systems, which are deployed in the storage area network (SAN), blend metadata with data in underlying disks. Unfortunately, such symmetric architecture is prone to system-level failures, as metadata on shared disks can be damaged by a malfunctioning client. In this paper, we present an asymmetric block-based parallel file system, Redbud, which isolates the metadata...
To reduce the unfavorable influence of phosphene array irregularity on the form of Chinese character pattern so as to improve recognition accuracy in visual prostheses, two correction methods were put forward. One method was to generate phosphene closest to the target point in regular arrays using weighted nearest neighbor search. The other was to generate phosphene whose center located in the region...
To meet the requirements for being geared to the international standards and to meet the demand for self-development of an enterprise, it becomes more and more common for an enterprise to execute EPC projects. The EPC model compares with the traditional contract model, the risk of general contactor is the biggest undoubtedly. Through the analysis of the EPC model to determine the risk source and loss...
This paper adopts the experiment method to research that the way of composition supported by the information technology could improve the quality of composition written by the writing disable students in Chinese environment. The results shows: (1) Supported by voice recognition technology, the oral composition could enhance the content in their writing, and the quality improves obviously. (2) Concept...
This paper addresses a method of simulated phosphene's size estimation based on tactile perception. To evaluate the size matching of the simulated phosphenes, subjects are in a simulated artificial visual environment and use a size matching tactile board to match the size with the phosphenes that they observe. Three phosphene distributions (Uniform, Gaussian I and Gaussian II) of the simulated phosphene...
This paper combines the rough set (RS) theory and support vector machine (SVM), and making best use of the attribute reduction characteristic of RS theory catches the main attribute of the research subjects, and it uses SVM to make prediction model, and applies this method to construction safety pre-warning. The experiment results show that the method is viable, which makes a useful exploration research...
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