一种基于ANN算法的工程设计数据回归方法

对设计过程中涉及的一些曲线、表格等形式的数据进行一定形式的描述转换处理是计算机辅助设计工作中为便于实现信息自动查询的一项基本工作。本文基于考虑人工神经网络所具有的非线性映射特征，提出了一种基于人工神经网络的数据回归处理方法。该方法在数据处理过程中，无需考虑数据之间的具体映射关系，因而具有很大的灵活性和适用性，避免了传统处理方法的复杂性和局限性。     

激光数字波面干涉仪傅里叶变换移相干涉术

讨论了一种新的干涉图处理方法，能实时快速准确地提取干涉图信息，直接测量波面的位相分布，获得较高的位相分辨率和空间分辨率，使光学波面的检测精度达到λ／１００以上，并且实现了波面的的实时显示。     

主动测量信息处理的智能化

本文提出了一种对被测变量测量值所需信息进行了智能化处理方法，在线辨识出表征传感器滞后特性的时间常数Ｔｍ，再利用校正（补偿）的方法减少或消除滞后特性的影响，以减少或消除动态误差，使测量与控制融为一体，实现主动测量技术的全盘自动化。     

GIS在市场营销信息处理中的应用

地理信息系统可用于分析和处理在一定地理区域内分布的各种现象和过程，解决复杂的规划、决策和管理问题。本文把地理信息系统应用于对市场营销中信息处理的研究中，解决了传统市场营销信息处理中存在的问题，为市场营销信息处理方法提供了一种新的方法和手段。     

基于激光三维彩色数字化技术的数据颜色边界提取

分别利用基于光学三角形原理的光带法和彩色传感器直接拍照法实现对被测物体的三维彩色数字化，并利用传感器标定技术实现了三维信息与彩色信息的匹配．提出采用直接处理彩色传感器获取二维彩色图像的方法实现三维彩色数据颜色边界提取的算法，避免了数据简化过程中颜色信息的失真．以此为基础，对一服装模型进行了三维彩色数字化实验，并将所得数据按新算法进行了处理；实验结果验证了所提算法的正确性．     

智能三坐标系统中的零件图像信息提取技术

针对图像信息的复杂性、不精确性,提出一种结合贪婪遗传算法和自适应模糊增强算法的图像处理方法,实现了智能三坐标测量机系统中零件图像信息提取.     

同异反产品设计方法

 在产品设计中，领域专家的经验知识和人类创新思维的信息交合对于最终产品设计的成功与否至关重要．面向产品设计的各个过程，利用集对论的系统分析方法从联系的角度实现了设计信息的整体处理．并在此基础上，提出一种新的产品设计方法—— 同异反设计法． 该方法在设计过程中较好地利用了领域专家的经验知识，体现了“以人为本”的设计思想，实现了知识的重用．最后，针对面向市场的产品设计的3个阶段初步说明其在产品设计中的应用．     

基于AutoCAD的网络化CAD实现

为了充分利用网络资源和计算机技术，实现跨平台的信息融合。利用ISAPI通讯接口封装技术实现了不同客户软件的集成。应用FTP或HTTP标准数据传输协议，采用标准IDL接口实现了远程文件格式转换服务，解决了CAD系统之间的文件格式不兼容问题。基于AutoCAD2000i编制了进行远程终端可视化参数处理的VBA宏，设计并实现了计算服务调度管理器和远程有限元分析服务，为现代产品设计提供了一种信息获取和资源共享的有效途径。     

基于 CCD 检测的半色调防伪技术的研究

探讨了一种半色调图像的防伪信息嵌入与提取方法,运用网点生成原理和数据库技术,实现了在 RIP 处理后生成的半色调图像文件中嵌入隐藏信息,并利用 CCD 设备扫描嵌入隐藏信息的印刷品,结合算法实现隐藏信息的提取。 实验结果表明:与数据库技术的结合,大大提高了嵌入信息的灵活性和隐蔽性,信息嵌入和提取的速度很快,且该方法不增加额外的印刷成本,嵌入信息的不可见性好,可广泛应用于包装防伪和证件、证书防伪中。     

多功能阵列式触觉传感器的研究

介绍了一种以MEMS技术制作的可定量获取三维接触力信息的 4× 8阵列触觉传感器的结构与工艺 ,提出一种新颖的三维接触力信息的获取与处理方法 ,并给出了实现接触、分布压、接触总力、滑动状态等多种功能的实验结果和主要的技术指标。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

From Industry 4.0 to Research 4.0. Development of High Performance Fibers in the Light of Digitization

We associate a variety of innovations with the term ＂Industry 4.0＂. The pioneer of many 4.0 modifications forms the basisfor the trend towards the integrated di...     

Roman iron and steel: A review

ABSTRACT

The production of ferrous metal increased during the Roman Late Republican period, Principate and Empire. The direct bloomery process was used to extract the metal from its ores using slag-tapping and slag-pit furnaces. The fuel was charcoal and an air blast was introduced by bellows-operated tuyères. Iron formed as a bloom, often as a spongy mass of metal, which contained impurities from the smelting process, including unreacted ore, fuel, slag and fragments from the furnace walls, while the metal was often inhomogeneous with varied carbon contents. Blooms were either smithed directly into bars or ingots or they were broken up, which also allowed the removal of gross impurities and a selection of pieces with similar properties to be made. These could then be forge-welded together and formed into characteristically shaped ingots. Making steel in the furnace seems to have been achieved: it depended on the ore and the furnace and conditions within it. Surface carburization was also carried out. Iron and steel were used extensively in construction and for tools and weapons. Fire welding was often used to add pieces of steel to make the edges of tools and weapons, which could be heat-treated by quenching to harden them.     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Synthesis of Alumina-Zirconia Nanocomposites by Solgel Process

Al₂O₃-ZrO₂ nanocomposites were developed starting with the solgel process. Composite alumina-zirconia nanopowders were synthesized from metallorganic precursors (Aluminium secondary butoxide and zirconium Iso propoxide) using the solgel process. The parameters affecting the synthesis—solvent, concentration of precursor, R/H ratio (i.e., dilution of water in solvent)—were varied as also the temperature and pH. BET and TEM were used to measure nanosize. Diffuse reflectance spectroscopy and also qualitative optical absorption led to identical particle size estimate. The variation of process parameters was used to study the effect and interdependence of process parameters. Artificial Neural Networks was used to rigorously analyze the process. Although this led to confirmation of interdependence of parameters, the presence of a single overwhelming solvent variable was also established. Then the optimal process was used to synthesize more nanopowder. To produce bulk nanocomposite the nanopowders were sintered by varying the temperature and time period. The sintered lithoids were probed with a vickers hardness tester to measure elastic modulus, hardness, and fracture toughness. The results showed high elastic modulus, modest hardness, and very high fracture toughness.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Friction Stir Processing Strategies for Uniform Distribution of Reinforcement in a Surface Composite

Friction stir processing (FSP) is an important technique for preparing surface composites. Fabricating defect-free surface composites with uniform particle distribution by FSP is a challenging task. In this study, silicon carbide particles reinforced AA5083 alloy surface composites was fabricated using different FSP strategies including variation in process parameters, dual-tool processing and tool offset overlapping. Material flow of the processed material with reinforcement particles demonstrated that the distribution of particles was influenced by the stirring action of the probe as well as the extrusion of the plasticized material due to the movement of the tool. Process parameters, particularly rotational speed, showed a dominant influence on the distribution of silicon carbide particles.