BP神经网络在供应链管理绩效指标评价中的应用研究

依据平衡记分法原理,建立供应链管理绩效评价的指标体系;依据BP神经网络原理,建立用于企业供应链管理绩效指标评价的BP神经网络评价模型,利用该模型对上海某动力设备有限公司的供应链绩效指标进行了评价,同时探讨了BP神经网络在供应链绩效指标评价中的特点和适用性.     

投资决策阶段的可行性预测研究

本文主要研究建设项目的投资决策阶段的特点,与神经网络相结合,充分发挥神经网络的预测能力,达到对前期各阶段进行有效预测的目的。本文引入BP神经网络,首先,将BP神经网络引入到投资决策阶段的可行性预测中,通过对影响可行性预测的各因素的了解和认识,运用BP神经网络进行充分预测,从而得到当只有单一因素变化时,项目是否可行。     

基于神经网络的电机转矩软测量研究

径向基函数神经网络（RBFNN）具有最优逼近和全局逼近的特性，在函数拟合方面优于传统的BP网络，将在化工领域广泛使用的软测量技术应用于电机系统的转矩测量，该方法的可行性进行了论证，并运用RBF神经网络建立转矩的软测量模型。同时建立了基于BP神经网络的软测量模型，用改进的kvenberg—Marquardt算法对BP神经网络进行学习和训练，并对两种网络进行了对比。该方法只需要电流信息，辨识方法简单。研究表明，RBF神经网络辨识效果优于BP神经网络。     

BP神经网络在公路工程项目沟通绩效评价体系的应用

本文通过深入分析影响工程项目沟通管理的因素,建立沟通绩效评价体系,并运用BP人工神经网络方法对项目沟通绩效进行综合评价。结合海南G98海口绕城高速公路改扩建项目,对建立的BP模型进行实际应用分析,有针对性地采取管理措施,从而推动项目的顺利进行。     

BP神经网络在标准实施情况评估中的应用

本文通过分析标准实施的特点及影响因素,提出标准实施情况评估指标体系,运用BP神经网络理论方法,构建了标准实施情况评估的BP神经网络模型,再通过调查问卷收集到的标准实施情况样本,对所构建的BP神经网络进行训练,并应用检测样本对训练好的神经网络进行仿真测试。结果表明,基于BP神经网络的标准实施情况评估模型,能有效克服传统评价过程中建立复杂数学模型和数学解析表达式的问题,而且还避免人为的主观随意性,可提高评估结果的准确性和客观性。     

基于遗传算法—神经网络的钢筋混凝土梁非线性分析

建立了一种新的钢筋混凝土梁非线性分析模型。其特点是：采用BP网络的三层结构对钢筋混凝土梁进行了非线性分析：根据统计资料,生成训练样本：运用遗传算法优化神经网络权值,并对样本进行训练,样本训练采用样本批训练与单样本训练相结合的方法。该模型在理论上具有先进性,在实践上具有可行性。     

BP神经网络在企业综合绩评中的应用研究与改进

以平衡计分卡法为基础构建了企业综合绩效评价体系，重点介绍了BP人工神经网络模型在企业综合绩效评价体系中的应用方法和步骤，此外还对BP网络的初始权重及阈值的赋值、训练样本的选取、隐含层的确定、网络的收敛性等问题做了较为详细的研究和改进，最后给出了基于Matlab的BP算法的实现并进行了实证研究。     

基于回归分析与BP神经网络的风机噪声预测

针对能源问题和风力发电机组噪声检测过程复杂的现状,研究IEC 61400-11风力发电机组噪声测量技术标准,提出一种回归分析和BP神经网络相结合的方法,对风电机组噪声的A计权声压级进行预测。由风电现场采集的数据建立多元线性回归方程,求取回归系数,分析简化后,用较少的输入量训练BP神经网络,建立机组的噪声预测模型。将模型应用于新疆某风电场的实际测试过程中,效果良好,验证该方法的可行性和有效性。     

基于WOA–BP神经网络的液滴铺展预测

目的 提高BP神经网络对电喷印过程中液滴铺展行为的预测能力。方法 提出一种鲸鱼优化算法(WOA)优化BP神经网络的液滴铺展预测模型。首先，采用相场方法建立电场作用下液滴铺展的数值模型，并通过实验验证仿真结果的准确性。然后，选取初始直径、撞击速度、接触角和电场强度作为神经网络的输入参数，将最大铺展直径作为神经网络的输出参数，利用鲸鱼优化算法优化神经网络中的初始权值和阈值，构建液滴铺展预测模型。最后，基于仿真结果对预测模型进行训练与测试，并将其与传统的BP神经网络模型进行对比分析。结果 相较于传统BP神经网络预测模型，WOA–BP神经网络预测模型的平均绝对误差、均方根误差分别降低了72.60%、77.60%，而平均绝对百分比误差则从15.029 3%减小为4.585 3%。结论 WOA–BP神经网络预测模型可以更好地预测液滴铺展，可为液滴铺展的预测提供新的方法。     

基于人工神经网络的Cu-Cr-Zr合金时效强化性能预测研究

本文首次利用神经网络对Cu—Cr—Zr合金时效温度和时间与硬度和导电率样本集进行学习，采用改进的BP网络算法——Levenberg—Marquardt算法，建立了时效强化工艺BP神经网络模型。预测结果表明：该BP神经网络可以充分挖掘样本蕴含的领域知识，可以对材料性能进行有效预测和分析。     

Effect of Permeable Crystalline Material on Steel Reinforcement Corrosion of Concrete

Permeable crystalline materialcan permeate into pores and cracks of concrete and catalyze the reaction between Ca(OH) 2and unhydrated cement to generate a great quantity needle non-soluble crystals, which can stop up the pores and cracks of concrete, and increase the impermeability of concrete. This paper reported the results of a study conducted to evaluate steel reinforcement corrosion of concrete specimens uncoated and coated with permeable crystalline material as well as mixed with the permeable crystalline material. The properties evaluated for corrosion test were water impermeability, water absorption, compressive strength and potential. The results of water impermeability, water absorption, compressive strength clearly showed that the permeable crystalline material could prohibit water, any soluble salts and moisture from penetrating the concrete to cause corrosion, leaking, and other problems, and it did increase the compressive strength, which was favorable for protection of corrosion of reinforcing steel. Moreover, it was concluded from the potential-time curve that the steel reinforcement of uncoated specimen was in the state of activation whereas that of other specimens coated and mixed with the permeable crystalline material was in the state of inactivation. Above all, it was indicated that the permeable crystalline materialis very effective to protect the steel reinforcement of concrete from corrosion.     

The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.     

Quality Study of Honeycomb Core Shaping Without Wax Stabilization

Sandwich panels utilizing honeycomb cores result in lightweight, high-strength units that are very rigid. Indeed, they give honeycomb panels the best strength-to-weight ratio of any construction type available. Conventionally, the wax is poured into the cell of the core to strengthen the structure and prevent the core from being crushed during milling. Much time and labor is required to wax, mill, and clean the cores. In this study, the process of pouring wax into the core was skipped. In other words, the cutter directly milled the core. Experiments showed that the compressive strength of the core produced without wax stabilization was only 3% lower than that of cores produced using the traditional method. In addition, the drum peel strengths of cores produced without wax stabilization were 38.4% higher than cores produced using the traditional method, in which residual wax seriously polluted the adhesive. It was also found that eliminating the wax process can reduce costs.     

In-process thermal treatment of polylactic acid in fused deposition modelling

Polylactic acid (PLA) is one of the most widely used open source fused filament fabrication materials due to its ease of extrusion, biodegradability, and mechanical strength. The mechanical strength of PLA largely depends on the proper growth of its semi-crystalline structure, which can be severely impaired by a low rate of crystallization, particularly in open source printers. This can be further aggravated by the non-uniform thermal distribution of heat that causes improper curing among the extruded beads of the printing material. As a result, PLA printed on open source printers does not achieve the best mechanical properties. This research, for the first time, proposes an additive-free solution implemented through a detailed set of experimentation to improve the curing rate through in-process temperature variations to cure the joints among the beads. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy is used to confirm the improvements in the bead joints. This work is conducted in two phases of experiments. In the first phase, a full factorial ANOVA is used to investigate various process parameters and the important variables are used in the second phase to print test specimens in four different sets.     

Investigation of the Corrosion Behaviors of HVOF-Sprayed Carbide Cernet Coatings in Molten Al-Zn-Si Alloy Bath

In continuous hot-dip galvanization process the corrosion and chemical stability of the sink roll in the galvanizing bath are important problem which effects on the quality and productivity. In order to protect the sink roll the carbide cermet and/or ceramic coatings were deposited on the surface of the sink roll. The WC-, Cr3 C2-cermet coatings were deposited by high velocity oxygen fuel (HVOF) spray, respectively. The coating samples were immersed in molten Zn-alloy containing 50 wt % aluminum at 833 K for 24 hr and 144 hr, respectively. The inter-diffusion and inter-reaction of Zn, Al and elements in coating and corrosion behaviors of these coatings were investigated by XRD, SEM and EPMA etc. The corrosion mechanisms of the carbide cermet coatings and ceramic coatings in molten High Al-Zn-alloy were approached.     

Fundamental study of adhesion of ice to cooling solid surface (Discussion on influence of copper oxide layer on ice adhesion force)

In many situations, ice often adheres to a cooling solid surface, frequently causing serious accidents. It is critical to clarify the mechanism of ice adhesion to the cooling surface in order to prevent ice adhesion. In a past study, the shearing stresses of two kinds of test plates with a copper surface having the higher thermal conductivity were measured. The shearing stress corresponds to ice adhesion force. Both shearing stresses were significantly different; however, the cause remains unclear.Therefore, the present study focuses on an oxide layer as the main factor causing the difference of both shearing stresses; the influence of the oxide layer formed on shearing stress was discussed. And in the removal and reformation processes of the oxide layer, the time variation of the shearing stress was clarified. Moreover, the relationship between the state of the copper surface and the shearing stress was also clarified by surface analysis.     

重塑标准推行格局 推动LED照明的普及（英文）

正When you are enjoying the green,energy-saving and healthy lighting of IKEA LED luminaire,you may not realize that most of IKEA’s LED bulbs are produced by the LED luminaire smart manufacturing system of Hangzhou Zhongwei Photoelectricity CO.,LTD(ZVISION).No longer enclosed in the laboratory,the product standards are brought into the factory workshop and even to the entire production process.Thus,the standards are promoted and applied in a favorable way by enterprises,benefitting consumers with high quality products.     

Chinese Experts Contribute to ISO＇s New Toy Standards

正The international standard,ISO 8124-6,Safety of toys–Part 6:Certain phthalate esters in toys and children’s products,was officially issued by ISO worldwide on August 15.It was the first time for Chinese experts to lead the ISO standard development in toys industry.The standard was drafted by a group of Chinese experts from SAC/TC for toys and relevant Chinese departments and finally completed by a dedicated international group of experts.ISO 8124-6 makes a substantive breakthrough in the aspects of the scope of toys,limitation of plasticizer types,control of test cost,accuracy of test,operation convenience,etc.,offering the operational guidance for toy manufactures and testing laboratories.     

中国质量(北京)大会(英文)

正Themed on"quality,innovation,development",the first China Quality Conference(Beijing)was held in the Great Hall of the People on September 15.Chinese Premier Li Keqiang delivered an important speech at the conference.State Councilor Yang Jing and Wang Yong attended the conference with over 600 domestic and international representatives from foreign,regional and international quality organizations     

National Working Meeting on Land and Resources Standardization

正The National Working Meeting on Land and Resources Standardization was held in Beijing on July 15,2014.Wang Min,the Deputy-Minister of the Ministry of Land and Resources,and Yin Minghan,the Chief-Engineer of SAC addressed the meeting.Representatives from relevant competent departments and technical committees were present.The meeting aims to summarize work,discuss existing problems and make clear working thoughts,promoting standardization work of land and resources to a new level.Wang Min pointed out that the standardization work of land and resources should be centered on the basic principles of"protecting land and resources dutifully,intensively and economically utilizing land and resources,and making all-out efforts to safeguard the public’s rights and interests",highlighted the