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2011 International Conference on System science, Engineering design and Manufacturing informatization最新文献

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The analysis on the Deposit poor Credit under the anticipation of the Central Bank raising the interest rates in China 央行加息预期下中国存款不良信用分析
H. Qin
The paper has made the analysis on the Deposit poor Credit under the anticipation of the Central Bank raising the rates. To control the sharply increasing prices, the Central Bank has taken the measure of raising the interest rates and it has made the deposit rate and loan rate of the commercial bank up correspondingly. Firstly, through the model of systematic dynamic of the Central Bank raising the rates, the paper has analyzed the SyntheSim for the effect of the Central Bank raising the rates to the deposit rate and loan rate of the commercial bank. Secondly, the paper has analyzed whether the system of the Deposit poor credit for the commercial bank chaos or not, and pointed out that the Central Bank raising the rates has been rational and reasonable. Finally, the paper has put forwards the measures which the bank should take to deal with the problem of the decreasing of the Deposit poor Credit.
本文对央行加息预期下的存款不良信用状况进行了分析。为了控制急剧上涨的物价,中央银行采取了提高利率的措施,并相应提高了商业银行的存款利率和贷款利率。首先,通过建立央行加息的系统动态模型,分析了央行加息对商业银行存贷款利率影响的综合效应。其次,分析了存款不良信用制度是否对商业银行造成了混乱,指出央行上调利率是合理的。最后,提出了银行应对存款不良信用下降问题应采取的措施。
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引用次数: 1
Based on support vector machine approach to missing data 基于支持向量机的缺失数据处理方法
Yang Li-hua, Ni Qing-hua
This paper systematically analyzes the causes and the mechanism of missing data, and research the processing method of missing data based on the support vector machine. And the results show that the prediction based on support vector machine method is more desirable than neural network, wavelet network model. And this method can promote and apply in the prediction of missing data to a certain extend.
本文系统地分析了缺失数据产生的原因和机制,研究了基于支持向量机的缺失数据处理方法。结果表明,基于支持向量机方法的预测效果优于神经网络、小波网络模型。该方法可以在一定程度上促进和应用于缺失数据的预测。
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引用次数: 0
Optimal Routing in Multi-sink Sensor Networks based on Fuzzy Comprehensive Evaluation 基于模糊综合评价的多sink传感器网络最优路由
Tiantian Yuan, Jingdong Xu, Jianzhong Zhang, Dongying Ning
This paper proposes a new routing protocol, namely Optimal Routing in Multi-sink Sensor Networks based on Fuzzy Comprehensive Evaluation (ORFCE). The protocol applies fuzzy comprehensive evaluation with selecting optimal routing in multi-sink sensor networks by considering three factors, the least residual energy in path, the least average link quality in path, and hop counts from sensor to sink. ORFCE is a multi-path, hierarchical, active and on-demand mixed, and QoS-guaranteed distributed routing protocol. By means of simulating in OMNeT++, the application of the ORFCE protocol will prolong the network lifetime enormously, enhance the packet delivery ratio greatly, and reduce the number of control messages largely.
本文提出了一种新的路由协议,即基于模糊综合评价(ORFCE)的多sink传感器网络最优路由。该协议采用模糊综合评判方法,综合考虑路径剩余能量最小、路径平均链路质量最小和从传感器到汇聚节点的跳数三个因素,在多汇聚传感器网络中选择最优路由。ORFCE是一种多路径、分层、主动和按需混合、qos保证的分布式路由协议。通过在omnet++中进行仿真,发现ORFCE协议的应用将大大延长网络的生存期,大大提高数据包的发送率,并大大减少控制消息的数量。
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引用次数: 0
Photo-generated carriers decay behavior of nano-crystalline β-SiC thin film irradiated by pulse laser 脉冲激光辐照下纳米晶β-SiC薄膜的光生载流子衰减行为
Xiao-xia Han, Caixia Li
The photo-generated carriers decay behavior of microcrystalline and nanocrystalline β-SiC films grown by helicon wave plasma-enhanced chemical vapor deposition process is measured by microwave absorption technique. The decay of the photo-generated carriers concentration includes a fast and a slow component. The measured transient decay curve of microwave absorption signal can be fitted fairly with a sum of two exponential decay functions, which indicates that the decay process is governed by two different traps. The results show that the transient decay behavior of the films is closely related with their micro-structrue. The nonradiative recombination which gives priority to the photo-generated carriers decay process involves multiple energy transition processes. A relationship between the time constant and the energy location has been obtained.
利用微波吸收技术测量了螺旋波等离子体增强化学气相沉积法制备的微晶和纳米晶β-SiC薄膜的光生载流子衰变行为。光生成载流子浓度的衰减包括快速和慢速两部分。测量到的微波吸收信号的瞬态衰减曲线可以用两个指数衰减函数和很好地拟合,表明衰减过程受两个不同的陷阱控制。结果表明,薄膜的瞬态衰减行为与其微观结构密切相关。以光生载流子衰变过程为主的非辐射复合涉及多个能量跃迁过程。得到了时间常数与能量位置之间的关系。
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引用次数: 0
Optimal design of solar wall air heating system 太阳能壁式空气加热系统的优化设计
Lin Qiu, Geng Ren
In order to effectively improve the heat utilization of solar energy, by the convection heat transfer field synergy theory, this paper studies a solar wall air heating system, analysis the flow velocity field and temperature field of the solar wall channel, and calculation the variation rules of temperature gradient direction within the channel and air flow velocity (speed ratio) with the field synergy angle and convection contribution. It is given: the temperature gradient direction leading to the different role of changes of air flow velocity with collector walls heat transfer, when the temperature gradient direction upward tilt (θ> 0°), the convection contribution increase with flow rate increase, and the greater of ¸, the more obvious of the effect; there is the optimal direction angle ¸ for every air flow speed ratio to make the largest convection contribution, from that, this study provides the useful ideas for the optimization design of the solar wall collector plate structure from.
为了有效提高太阳能的热利用率,本文运用对流换热场协同理论,对太阳能壁面空气加热系统进行了研究,分析了太阳能壁面通道内的流速场和温度场,计算了通道内温度梯度方向和气流速度(速比)随场协同角和对流贡献的变化规律。结果表明:温度梯度方向对空气流速变化对集热器壁面换热的影响不同,当温度梯度方向向上倾斜(θ> 0°)时,对流贡献随流量增加而增加,且θ越大,影响越明显;在每个气流速比下,都存在使对流贡献最大的最佳方向角,由此为太阳能壁面集热器板结构的优化设计提供了有益的思路。
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引用次数: 0
Prediction of landslide deep displacement using improved genetic algorithm based on time series analysis 基于时间序列分析的改进遗传算法预测滑坡深部位移
Shao-jun Li, Fanzhen Meng, Chengxiang Yang
The change of landslide deep displacement due to excavation, reinforcement or rainfall is regarded as a time series. Predicting landslide deformation is a typical nonlinear optimization problem. This paper presents an improved genetic evolutionary algorithm with two step search to determine the model structure and parameters, it is applied to recognize the coefficients and orders of nonlinear polynomials model given by displacement time series analysis. On the basis of a practical engineering, results indicates that the predicted displacement is in good accordance with the monitoring data, the improved intelligent method is found to be reasonable and prospective.
将开挖、加固或降雨引起的滑坡深度位移变化视为一个时间序列。滑坡变形预测是一个典型的非线性优化问题。提出了一种改进的两步搜索遗传进化算法来确定模型结构和参数,并将其应用于位移时间序列分析给出的非线性多项式模型的系数和阶数的识别。实际工程结果表明,预测位移与监测数据吻合较好,改进的智能方法是合理的,具有较好的应用前景。
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引用次数: 0
Analysis of forward error correcting codes 前向纠错码分析
Ting Chen
Error control coding is a vital means to improve reliability of information communication. Among the various types of error correcting codes, FEC is outstanding in real-time transmission because of its unique property of not asking transmitter for additional data. It has big potential in application. FECs also have many types, including block codes, convolutional codes and other sub codes. This paper contains brief explanation of all FEC codes, comparison among each other and their applications in both Internet and Wireless communications.
差错控制编码是提高信息通信可靠性的重要手段。在各种类型的纠错码中,FEC因其不要求发送方提供额外数据的独特特性而在实时传输中表现突出。具有很大的应用潜力。fec也有许多类型,包括分组码、卷积码和其他子码。本文对所有FEC代码进行了简要说明,并对它们进行了比较,以及它们在互联网和无线通信中的应用。
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引用次数: 6
Development of workload models for CNC machines from 3 - Phase current consumption using ensemble method 用集成方法从三相电流消耗出发建立数控机床工作负荷模型
Thanarak Raktham, K. Piromsopa
Increasing in the competivieness of the manufacturing industry, manufacturers have to improve productivity. Data mining is one tool that is widely applied. In injection-mold manufacturing industry, 3-phase electrical usage from CNC milling machine can be used for machinemonitoring. To reduce human error, we applied data mining technique toelectrical usage patterns for identifyingcurrent process running in CNC machines. In this paper, classifiers are created by applying 1)Naive Bayes 2) Bayes Net 3) Neural Network 4) KStar 5) Decision Table and 6) J48(C4.5) to electrical data. Later ensemble methods such as 1) AdaBoostM1, 2) Bagging, 3) Stacking, and 4) Vote are applied to each classier to create more robust models. The models are trained and tested with 10-fold cross validation. Ourpreliminary result shows that bagging ensemble of J48 classifier with no discretization in the preprocessing step gives the best AUC = 0.946.
在制造业竞争力日益增强的情况下,制造商不得不提高生产率。数据挖掘是一种被广泛应用的工具。在注塑模制造行业中,数控铣床的三相电气可用于机器监控。为了减少人为错误,我们将数据挖掘技术应用于电气使用模式,以识别数控机床中运行的电流过程。本文采用1)朴素贝叶斯、2)贝叶斯网络、3)神经网络、4)KStar、5)决策表、6)J48(C4.5)对电数据进行分类。后来的集成方法,如1)AdaBoostM1, 2) Bagging, 3) Stacking和4)Vote应用于每个分类器,以创建更健壮的模型。这些模型经过10倍交叉验证的训练和测试。初步结果表明,预处理过程中不进行离散化处理的J48分类器套袋集合的AUC值为0.946。
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引用次数: 0
The application in adaptive control for differential evolution algorithm 微分进化算法在自适应控制中的应用
Xu Zhicheng
Aiming at the complex nonlinear system, a PID self-adaptive control method based on the DE algorithm is stated in the paper. Based on on-line optimization of PID controller parameters by the DE algorithm, the desirable control effect is obtained. An application of this method to the control of the continuous Stirred Tank Reactor (CSTR) system which is a complex nonlinear system is studied. Simulation results show the validity of the method.
针对复杂非线性系统,提出了一种基于DE算法的PID自适应控制方法。利用DE算法对PID控制器参数进行在线优化,获得了理想的控制效果。研究了该方法在连续搅拌槽式反应器(CSTR)这一复杂非线性系统控制中的应用。仿真结果表明了该方法的有效性。
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引用次数: 1
Mode analysis on the rail car of fire robot based on FEA 基于有限元分析的消防机器人轨道车模态分析
Shu Fang, Shengpeng Liu, Lei Zhang, Zhenwei Zhang
The rail car of fire robot, which is used for carrying the robot enter the rail tunnel, is a accessory with a bed type structure. In this paper, a mode analysis model of the rail car has been founded based on finite element analysis (FEA), and the vibration modes and corresponding natural frequencies have been obtained from the simulation. The impaction caused by the rail joint has simply as a periodic excitation, and the frequency of the excitation has calculated due to the contain speed. Compared the simulation results, the theoretically resonance frequency band has been avoided. And the tow points, which have the min sum of the displacements in each mode, were chosen as the best location of cable suspension positions, and the points bring the minimize deformation and vibration excitation to the rail car.
消防机器人轨道车是一种床式结构的附件,用于承载机器人进入轨道隧道。本文建立了基于有限元分析(FEA)的轨道车模态分析模型,并通过仿真得到了轨道车的振动模态和相应的固有频率。将钢轨连接产生的碰撞简单地描述为周期激励,并根据包含的速度计算了激励频率。与仿真结果比较,理论共振频带被避免了。选取各模态下位移总和最小的两个点作为索悬架位置的最佳位置,使索悬架对轨道车辆的变形和振动激励最小。
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引用次数: 1
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2011 International Conference on System science, Engineering design and Manufacturing informatization
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