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Two kinds of polynomial bases with parameter are constructed in this paper. Based on these bases, two kinds of curves with shape parameter are defined. The first kind of curve contained the Wang-Ball and Said-Ball curve of ninth degree and many curves located between them. The second kind of curve contained the Said-Ball and Bezier curve of ninth degree and many curves located between them. By analyzing...
In the past, we evaluated damage effectiveness of shrapnel pill ignoring dispersing blind area. Researches and experiments show that dispersing dead area of shrapnel pill is in existence. The math model of stochastic producing method of bullet falling point when taking into account dispersing dead area is set up, damage effectiveness when considering dispersing blind area based on two representative...
Notice of Violation of IEEE Publication Principles"Numerical Modelling of the Environment Impact of Landfill Leachate Leakage on Groundwater Quality--A Field Application",by Shao-Gang Dong, Zhong-Hua Tang, Bai-Wei Liu, O.D. Oroduin the Proceeedings of the 2009 International Conference on Environmental Science and Information Application Technology, ESIAT 09, pp. 565-568After careful and...
In area environment, various forms of life can exhale different kinds of audio signals, and these audio signals are closely related to a variety of organisms living environment and human activities. For analyzing these audio data automatically, local search data structure is proposed in this paper, that it is local search tree (LS-Tree), to classify audio data in the natural environment rapidly. Firstly,...
Before landslides slide partly, the displacement of part monitoring points in the landslide will change according to a discipline, when landslides slide partly, these monitoring points will cause a great displacement in a very short time, it is called as a sudden change displacement, after landslides slide partly, the displacement of these monitoring points will change according to the other discipline...
Fu River is an important river because of its rich freshwater resources while it has become some polluted because of industry development. Then how to correctly evaluate water quality becomes more and more important. In the field of water quality assessment, the evaluation factors and water quality grades have complicated non-linear relationships. BP (Back propagation) has been popularly used in every...
In this study, the gene encoding purine nucleoside phosphorylase (PNPase) from Bacillus subtilis W168 was identified, cloned and expressed in Bacillus subtilis AG208. The gene encodes a polypeptide of 233 amino acids with a calculated molecular weight of 25,018 Da. The enzyme activity of the recombinant protein (AGPNP) was analyzed by temperature and pH perturbation difference spectra. Results showed...
Differential evolution (DE), a population-based multi-objective evolutionary algorithm, steers optimization search through swarm intelligence produced by co-operation and competition among individuals within the swarm. With its unique memory ability, DE can track the dynamics of the current search, adjust its search strategy accordingly, and achieve good global convergence and robustness without resorting...
Continuous nearest neighbor queries in road networks have recently received many attentions. To evaluate multiple concurrent continuous k nearest neighbors queries towards moving objects, we propose a multi-threading processing of multiple continuous queries (MPMCQ) framework, which exploits pipeline strategy and departs the continuous query processing into three simultaneous stages: query processing,...
This paper presents an approach which estimates the depth of the porous sediments on the bottom of a rectangular pipe by comparing the measured propagation modespsila frequencies to that calculated by finite element method (FEM). It is validated by comparing the calculated results to the theoretical results for the rectangular pipe with rigid boundary condition and to the experimental results with...
Geographic information system technology has been applied to manage and analyze the citrus production information in the Three Gorges area of China. Massive information related to citrus production management including spatial and non-spatial data are collected from different sources. Taking account of the demands of different end users, the data sets are organized at three scales, i.e. municipality,...
3S technology, which is rooted in computer science of Remote Sensing (RS), Global Positioning System (GPS) and Geographic Information System (GIS), has been used in land and resources management, urban planning, landscape construction, and so on. This paper puts forward 3S technology to the updating survey of land, and tries to demonstrate the feasibility and practicality of the method.
The paper analyses the characteristics of fitting elliptical arc and introduces its calculation method of node coordinates in multi-arc fitting on ellipse curve as well as its fitting error discriminant. It gives specific fitting algorithm flow chart. The examples of processing and analysis are given to showed that many of the elliptical arc adaptive interpolation fitting and can save a lot of memory,...
Wavelet analysis has been a widely applied one method for analyzing signal. In this work, the notion of vector-valued wavelet packets for space L2(Rn)s is proposed, which are generalizations of univariate wavelet packets. A constructive method for a class of biorthogonal vector-valued multivariate wavelet packets is formulated and their biorthogonality properties are discussed by virtue of matrix...
Wavelet analysis has been a powerful tool for exploring and solving many complicated problems in natural science and engineering computation. In this work, the notion of orthogonal matrix-valued two-dimensional wavelet packets with an integer Quantity Dilation Matrix is introduced. A procedure for constructing them is presented. Their orthogonal properties are discussed by virtue of finite group theory,...
Algorithms for Boolean operations using BSP trees and other algorithms have problems with efficiency and robustness. In order to improve the speed and correctness of operations, a new algorithm for Boolean operations on polygonal meshes was presented. In this algorithm, a fast collision detection algorithm based on oriented bounding box (OBB) was employed, which speed up the intersection test between...
This study is to develop a hybrid technology of plasma and catalysis for odor control. Reactive species were generated from the three types of plasma discharge, such as pulsed corona discharge, dielectric barrier discharge (DBD) and hybrid discharge (pulsed corona discharge and DBD plasma occurring together), driven by a self-made pulsed high voltage power supply. Ethanethiol was selected as treated...
It is difficult to treat industry wastewater which contains both heavy metals and refractory organic compounds. However, the Fenton-like reaction system using heavy metal ions in wastewater to decompose organics seems a promising method, which would have a positive effect on pollution reduction and wastes re-utilization. This paper is set out to comparatively study the effectiveness of UV/H2O2/metal...
Reverse logistics is the means driving economic growth, and third-party reverse logistics (3PRL) is the important carrier to realize reverse logistics. So, the analysis on 3PRL and its provider selection is important. All of these third-party companies would benefit from a framework for decision making to determine if entry into this market is feasible for them. This paper firstly present the conception...
Two treatments (5- and 15-tillage operations) were conducted to assess intensive tillage effects on wheat production in the Sichuan Basin, China. After intensive tillage, wheat grain yields were 55% and 41% in areas of soil loss lower than those in areas of soil accumulation by 5- and 15-tillage operations, respectively. The redistribution pattern in soil depth affected wheat production with a logarithmic...
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