Advanced Materials Research Vols. 181-182

Abstract: This paper presents a power load prediction mathematic model based on wavelet neural network theory which is a new neural network model thrives from wavelet analysis theory. By applying wavelet analysis, this paper can analyze power load in any dimension and collect it effectively. At the end of this paper, the authors analyze the model parameters and discuss various factors deeply.

Abstract: Tearing is a common failure type during the service life of woven fabric. In this paper, tongue-tearing strength of a tight twill-woven fabric with weave structure of was tested on the Material Test System (MTS810.23). A Finite Element (FE) model was developed with FE simulation software ABAQUS based on the geometrical characteristics of the woven fabric. With this meso-modeling method, the whole tongue-tearing process was dynamically displayed. Tearing strength and failure morphologies were compared between FE simulation and experiment result, and good agreements were found. Also, a mesh scheme independent research was conducted for this FE model.

Abstract: This paper presents a new algorithm of force refelecting te;epresece control system, which improve the s control signal quality. The author discusses the reasons and factors that cause the noise and put forward the solution method. Then this paper leads the model of stochastic resonance into force telepresence system and designs an effective force telepresence system which can check and make use of the stochastic noise. At the end of this paper, a case is simulated to verify the correctness of this control system.

Abstract: This paper brings up a design idea based on EPLD, which describes the complicated AC sampling logic time sequence design, such as frequent tracing, phase compensation, voltage and current asynchronous sampling control, data storage and interrupt response with AHDL language. Those functions can be totally brought into effect in EPLD. At the end of this paper, the author brings up the design principle and related program.

Abstract: This paper brings up the module of time delay stability analysis. The author establishes the time delay dynamics equation of force reflection telepresence system, and then analyzes the time delay stability of force reflection telepresence system in the elastic environment by using the system of differential and differences equations. Furthermore, this paper discusses the effects of the parameters in the model and defines the limits of time delay. At the end of this paper, a case is simulated to verify the correctness of this module.

Abstract: In this paper, a cooperative coevoluationary particle swarm optimization algorithm, CCMDPSO, is proposed to solve the optimization problem of triangulation of Bayesian networks. It arranges all the variables of a given Bayesian network into some groups according to the global best solution and performs optimization on these small-scale groups. The basic optimizer of CCMDPSO is an improved discrete particle swarm optimization algorithm, MDPSO. Experiments show that CCMDPSO is an effective and robust method for the triangulation problem.

Abstract: The morphology and dimension of wool fibers were compared from the usually processed in the wool applications to investigate the relationships between shape and dimensions of wool and fuzzing and pilling of knitted fabrics. The frictional coefficients of wool fibers were measured by capstan method. The surface morphology were observed by scanning electron microscopy (SEM), and the cuticle scale edge height (CSH) were measured to verify the relationship between CSH and the differential friction effect (DFE). The hairiness and tensile properties of yarn were also reported. The pilling comparative experiments of the corresponding knitted fabrics were conducted with the ICI pilling box according to GBT 4802.3-2008. The pilling grades were estimated by numbers of pills. Experimental results showed that the CSH increased with the slenderness of wool fiber when the length is approximately equivalent. Specifically, the DFE increased distinctly as the CSH increased. The pills weight of wool knitted fabric was in good agreement with the CSH, DFE.

Abstract: petroleum contamination is a very common environmental problem. Soil as the protective of groundwater, its remediation relates the security of groundwater, so we simulated the remediation of surface soil. From the experiment, we found that the natural attenuation of contaminated soil is a complicated process. The more processes contained, the easier petroleum attenuated. These processes can accelerate some of components reduce. Volatilization can only attenuate 24.85% petroleum, but if volatilization is coupled with biodegradation, that 89.99% petroleum can be attenuated. With the help of photodecomposition, 97.26% petroleum can be consumed. Volatilization action is a kind of physical attenuation mode, and it may not make some of components which are hard to volatilize into the air. Biodegradation action is a kind of biologic process which depend on the activity of bio-enzyme, and it need microbe compose a steady population. Photodecomposition is a kind of photochemical attenuation mode. If there are three or more attenuation processes exist, the powerful process will play a lead role, such as photodecomposition and biodegradation. From the result we can obtain that 59.83% contribution rate was caused by photodecomposition, and it can decay more petroleum than biodegradation and volatilization.

Abstract: Microporous manganese oxide in the form of laminar octahedral compounds (birnessite) has been synthesized facilely in a microemulsion system consisting of benzyl alcohol (BA), sodium dodecyl sulfate (SDS) and water. BA also served as a reducing reagent in the formation of manganese oxides. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Braunauer-Emmett-Teller (BET) measurements. The experimental results indicated that the reaction duration, temperature, and weight ratio of BA/SDS/H2O played key roles in determining the final morophologies of manganese oxide nanomaterials and also in their crystalline phase. Lower process temperature, shorter reaction time and lower BA ratio in the microemulsion were favorable for the formation of birnessite single phase. Mn3O4 nanocrystals appeared at a relatively higher temperature and more BA amount.

Abstract: Process planning is an essential component of computer aided process planning (CAPP), which involves operations selection from design features and operations sequencing of these selected operations. It makes process planning a complex combinatorial optimization problem to conduct of these two steps simultaneously. In this paper, we propose a cooperative simulated annealing (CoSA) approach for the process planning problem to minimize total manufacturing cost. The proposed CoSA algorithm employed a novel optimization strategy different from all the existing approaches in the literature. Simulated annealing was utilized to optimize the four components of a process plan individually and sequentially. The approach is tested on two parts from the literature and compared with other approaches. The computation results validate the effectiveness of the proposed algorithm.