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This paper presents a new method of localization and map building of mobile robot based on mixed map model using LRF (Laser Range Finder). The mixed model composed of occupancy grids and line character maps is utilized to represent the environment map. Firstly, the LRF models and Bayes rules are used to construct a local occupancy grid map. Then, we extract obstacles points to get a precise geometry...
Privacy has become an important issue in Data Mining. Many methods have been brought out to solve this problem. This paper deals with the problem of association rule mining which preserves the confidentiality of each database. In order to find the association rule, each participant has to share their own data. Thus, much privacy information may be broadcast or been illegal used. These issues can be...
In order to realize the edge preserving restoration of image, a novel hybrid filter which is a combination of Tukey anisotropic diffusion and an adaptive median filter based on object scale is proposed in this paper. The Tukey anisotropic diffusion can suppress the most of noises while preserving the edges, however, the impulse noise points which usually have large gradient will be regarded as edges...
The deficiency of measures which are used for the safe operation of power cables is analyzed in this paper, and then the fuzzy decision trees is applied to the field. This paper introduces the fuzzy ID3 algorithm and proposes the method of power cable insulation condition assessment based on fuzzy decision tree. What's more, a model based on original data monitored on 35kv cable in Jilin power system...
In recent years, many routing protocols and mobility management methods for hierarchical mobile ad hoc networks have been proposed, however few schemes are aimed to improve the routing performance under high node mobility. This paper presents a mobility management algorithm built upon HOLSR (Hierarchical Optimum Link State Routing) routing protocol. Besides default route, temporary route between mobile...
Recommender system is mainly based on collaborative filtering algorithms in social network, where it takes folksonomy as basic data structure. Collaborative filtering as a classical method of information retrieval has been also used in helping people to deal with information overload in folksonomies system. When context is taken into account, there might be difficulties when it comes to making recommendations...
Speeding is recognized as a major contributing factor in traffic accidents on freeway. In order to reduce speed-related accidents, accurate real-time speed limit enforcement system is very critical to freeway. This paper presents an automatic speed limit enforcement system on freeway based on cameras and the Field Programmable Gate Array (FPGA) implementation to achieve this objective. Taking the...
Net-centric simulation is a new simulation concept suitable for the net-centric environment. This paper researches the runtime support platform for the net-centric simulation. Firstly, capability requirement on the runtime support platform is analyzed. Secondly, the architecture of the runtime support platform is proposed. Then, its application mode based on the community of simulation task is introduced...
In this paper, the manual and automatic extraction of shoe last landmarks, including landmarks design, are discussed on the base of key sizes which are used in the shoe last design. The effect is evaluated from the following three aspects: the approximation rate of area, the cumulative variance of various landmarks, and the variety of principal shape vectors. Experimental results indicate that the...
Multiphase flow and complex flow regimes of asphalt-base crude oil with solid-state asphalt and gas presenting in submarine pipelines bring difficulty to the design and operation. For multiphase flow in risers, flow regimes are often very complex. So simulation of asphalt-base crude oil flow in vertical riser is presented using 3D Computational Fluid Dynamics and the Volume of Fluid method as a surface...
This paper combined the dependence of statistical features of pixels and the low-level features of image to complete image modeling. Using interactive image segmentation principle, through the posterior probability of maximum labelling field to obtain global energy function. Applying Graph Cut method to minimize the energy function and calculating optimal segmentation labeling of the whole image....
In the post-genomic era, discovering relationships between genes and further constructing gene regulatory networks (GRNs) is an important problem in system biology. In case the GRNs model for a cell is known, we can simulate the gene expression to predict future states of the cell and discover new drugs based on the relationships in the GRNs. In this paper, our aim is to construct a better gene regulatory...
Open ended robotic discovery aims at enabling robots to autonomously design and execute sophisticated experiments for gaining conceptual insight about real world. Such experiments are planned activities rather than innate motor commands and thus each single experiment results in a multivariate time series. In such a scenario, reducing the number of features in order to allow a symbolic learner to...
A wireless sensor node is often powered by battery which is not easily replaced, so researching how to use its limited energy effectively is the meaningful thing for wireless sensor networks (WSNs). Dynamic voltage scaling (DVS) has become a promising way for wireless sensor networks to exploit multiple voltage and frequency levels and prolong the sensor node's life. However, pure DVS for embedded...
Along with the improvement of network bandwidth, identifying heavy-hitter flows on-line is more significant for some network application, such as congestion controlling, anomaly detecting and so on. In this paper, we propose a novel algorithm REFI (Replacement-based Flow Identifying) to extract heavy-hitter flows online. On the basis of LRU replacement, REFI introduces flow size factor σ and modulating...
High speed forklift not only has the engineering working ability as an ordinary forklift, but also comes up to the running speed of 80km/h on highroad with the preferable cross-country performance, so it has received more and more attention in the field of mechanical engineering recently. In this paper, based on the test of vehicle's ride comfort, moment of inertia of body for high speed forklift...
Usability is no longer a forgotten quality attribute. Producing usable software user interface designs has become one of the important goals of software developers. Usability problems are intolerable as they affect software systems negatively. This paper proposes an approach to solve user interface usability problems by using a mix of user interface design guidelines and adaptation techniques.
Sys-log message is the importance data which could present information about internet source-destination connection of all IP address nodes in each network server. These sys-log messages must be securely kept in database in case of being referenced, such as legal requesting. The objective of this research was to develop a security protocol of system log message database manipulation. Message was split...
Traditional Web services, which are mainly technical specifications based on UDDI, provide service discovery by simple classification and key word matching, resulting in low precision ratio and recall ratio as well as low compatibility of service multiplexing and service composition. This paper, basing on Web service models and in combination with genetic algorithm, brings forward a multi-target optimization...
Expert system development environment directly affects the efficiency and quality of development of expert system. According to modular machine tool spindle box's design complexity and design goals of multiple solutions, it identifies modular machine tool spindle box expert system platform is the Pro/Engineer. Its development tools are Visual C++6.0 and Pro/Toolkit, its database management system...
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