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Robot path planning is an important research topic in robotics field. The paper proposes an algorithm based on the combination of Ant Colony Optimization(ACO) and Particle Swarm Optimization(PSO) for path planning. The new algorithm combines the advantages of ACO and PSO effectively and generates the distribution of the initial information for ACO by using the merits of high efficiency and concision...
This article introduced the text excavation's research condition, has analyzed the text excavation basic concept and the technology, summarized the text excavation process, the commonly used algorithm, the text classification, the text cluster, the connection analysis, the tendency forecast and so on, pointed out that the algorithm the insufficiency, has forecast the text excavation futurology question...
Poverty is a vital influence factor on households' health and insurance decision-making. This paper, under a structure of poverty-health and poverty-insurance decision, through a experiential analysis, is to study the effect of household' poverty on rural household' health and insurance decision. According to the outcome of the analysis, this paper indicates that household' poverty affects households'...
Hardware-in-loop simulation (HIL) of underwater heat-engine system is more believable than a mathematic simulator. In-depth presentations of a backpressure simulation device, a load pressure simulation device and a rotating rate controller are given which make up of the HIL of underwater heat-engine system. Section 1 of the full paper establishes and analyzes the mathematical model for such a HIL...
Image inpainting aims to restore lost information according to gray patterns from known area. PDE and texture synthesis are both widely applied in image inpainting. A new image inpainting algorithm combined those two kinds of methods are presented. Damaged region pixels are classified into texture pixels and structure pixels, which are inpainted with corresponding algorithms. Texture classification...
This paper analyzes the requirements of algorithms in AKA, which is the authenticated key exchange mechanism of 3G mobile communication system. An AKA security algorithm based on chaotic mapping is proposed. We establish a one-way Hash function based on chaotic mapping as the kernel function. Then all the encryption functions in AKA are redefined. Simulation results show that this method possesses...
Based on the cabin pressure regulating system characters of the nonlinear, larger inertia and time varying parameter, the arithmetic of fuzzy immune feedback (FIMF) was proposed to adjust PID control parameters real time and increase response and control capability of pressure loop, and using immune algorithm adjusting pressure loop control parameters real time which has optimizing performance and...
This paper presents an novel technique that employs both the color and edge direction features for Content-Based Image Retrieval (CBIR). In this method, a given image is first divided into sub-block which has the same size and then the color and edge direction features of each sub-block can be extracted. Next, it constructs a codebook of color feature using clustering algorithm and then each sub-block...
The vehicle transportation support needs to make a set of transportation project and make decisions in a short time according to the task and environment, in which the time is limited, the workload is heavy, and is involved quite a few units under contingency logistics. Based on the decision making process analysis of the vehicle transportation support resource, the paper designs and realizes the...
Nowadays, main methods used to SAR imagery built-up areas classification are GLCM (gray-level co-occurrence matrix) textural analysis, Markov random field, etc. They are extraordinarily time consumption and need for manual interaction. In this paper, a new scheme for fast and automatic classification of built-up areas is presented. It is based on geostatistical texture analysis and mainly consists...
Based on the characteristics of DV-Distance, an improved scheme for the typical distributed localization algorithm in wireless sensor network is proposed. The main principle of the improved scheme is to introduce the hops between anchor nodes and unknown nodes to determine calibration value of the distance.Further more,a method of the new distance correction based on hops and Straight-line distance...
Looking into risk coalesce appraisal of assets securitization through ecology theory, on the basic of measuring law which is named BES, set three independent variables as followed, concentration degree in trade, concentration degree in service, concentration degree in productions, for the first time, connecting risk coalesce appraisal in assets securitization with niche breadth and niche overlap,...
As the Government's macroeconomic regulation and control means, finance plays a significant role, but finance bears some certain risks. How to manage and prevent this risk is directly related to the survival and development of the whole country. This paper focuses on the combined model application research, fiscal risk early-warning based on principal component analysis and BP neural network. The...
This paper discusses a design of model following control system (MFCS) for linear system with time-delays. The bounded property of the internal states for the control is given and the utility of this control design is guaranteed. It is confirmed on basis of numerical examples that the output signal of the control system asymptotically follows the reference signal in the case of the existence of disturbances.
We present an approach based on novel structure called Multi-approximate R-tree (MR-tree) to performing the K-Nearest Neighbors (KNN) query efficiently and accurately in this paper. Maximal Enclosed Circle (MEC) is introduced to express an object approximately with Minimum Bound Rectangle (MBR). The introducing of the MEC improves the accuracy of the approximate expression of the spatial objects....
In this paper, we propose an energy-balanced cross-layer multi-path routing algorithm for wireless Ad hoc networks. This algorithm utilizes cross-layer information of the network nodes and can balance the energy consumption of the network nodes in flow distribution under the situation that the network topology is maintained unchanged; moreover, the transmission power can be adjusted in routing process...
A wide variety of present approaches work well in detecting frontal faces, but they are often unable to detect faces with partial occlusion, rotation and strong shadows. To address this problem, we propose an efficient technique. First, we filter the face-like regions from the input image using skin-color model. And then component classifiers are used to detect the faces' components from these potential...
In this paper, we present a class of polynomial primal-dual interior-point algorithms for linear optimization based on a new class of parametric kernel functions. This class is fairly general and includes several classes of kernel functions, such as given in [1, 4]. The goal of this paper is to investigate such a class of kernel functions and to show that the interior-point methods based on these...
Feature points are an important local feature of an image. Due to the poor performance in noise endurance of traditional gray weighted centroid algorithm, an improved algorithm is proposed. By dividing the object region into inner pixel region and edge pixel region, all inner gray pixels are equalized to restrain the noise. At the same time, all feature points are marked by connectivity to improve...
In open service grid, to establish trust relationships among different domains is a basic problem. This paper proposes a layered trust model based on behavior to enhance grid security and extensibility. The upper layer establishes and maintains recommendation trust relationships between different domains in grid; lower layer is in charge of evaluating trust value of entities in his domain. We give...
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