基于阻尼力调节的城轨车辆复合结构车身减振控制系统设计

为了降低车身振动给城轨车辆复合结构产生的危害,利用阻尼力调节技术优化设计城轨车辆复合结构车身减振控制系统。在考虑城轨车辆复合组成结构和工作方式的情况下,构建城轨车辆复合结构模型。在该模型下,结合城轨车辆的运行环境,模拟城轨车身在不同场景下的振动过程。利用安装的车身运行传感器,获取城轨车辆的实时运行数据,提取城轨车身振动特征,计算车身阻尼力调节量的理论值。采用可调阻尼器作为执行元件,执行可调阻尼力调节任务,在系统减振控制器的支持下,实现城轨车辆复合结构车身减振控制功能。通过系统测试得出结论：应用基于阻尼力调节的城轨车辆复合结构车身减振控制系统后,车身振动频率和振动幅值得到明显降低。     

浅谈点、线、面在室内玄关设计中的运用

玄关设计是室内设计中的点睛之笔,出色的玄关设计不光增加了私密性,而且增加了整个室内大环境的层次感及风格定位。本文从点、线、面及其构成组合运用中研究玄关设计,使其既有良好的使用功能,又有较高的视觉美观性。     

A methodology to model the functional structure of an organization

The Integrated Computer Aided Manufacturing (ICAM) program of the U.S. Air Force identified a need to better communicate and analyze manufacturing for the people involved in improving productivity. To satisfy that need, the ICAM program developed the IDEF (ICAM Definition) method to address particular characteristics of manufacturing. This IDEF Method is equally applicable in analyzing other types of organizations.IDEF comprises of three modeling methodologies: Function model methodology (IDEF₀), Information model methodology (IDEF₁) and Dynamics model methodology (IDEF₂). This paper reports on the function model methodology only. This methodology is used to construct a function model which helps in understanding the actions, activities, decisions, and informational interfaces needed to support the functions of an organization.     

A Survey of Urban Reconstruction

This paper provides a comprehensive overview of urban reconstruction. While there exists a considerable body of literature, this topic is still under active research. The work reviewed in this survey stems from the following three research communities: computer graphics, computer vision and photogrammetry and remote sensing. Our goal is to provide a survey that will help researchers to better position their own work in the context of existing solutions, and to help newcomers and practitioners in computer graphics to quickly gain an overview of this vast field. Further, we would like to bring the mentioned research communities to even more interdisciplinary work, since the reconstruction problem itself is by far not solved.     

淡远深邃,天蓝海碧——浅析《天空之城》色彩环境塑造的艺术

色彩之于影视动画,是视觉元素中非常重要的一环,它在塑造环境、烘托主题、助推情节发展以及奠定电影整体感情基调中发挥着不可替代的作用。宫崎骏的动画电影《天空之城》之色彩环境塑造水平,体现了导演深厚的色彩造型功力,文章试从人物色彩造型、故事情节渲染和音乐色彩表现等方面分析电影《天空之城》色彩环境塑造的艺术。     

碛口古镇建筑文化的意象透视

位于晋西的碛口古镇的传统民居建筑具有独特的审美思维表象和艺术特色。其建筑中的空间环境、室内外环境和建筑装饰无不折射出传统民居的文化意象,给现代设计提供了广阔的精神内涵和借鉴的源泉。     

基于Vega的虚拟城市仿真系统设计研究

虚拟城市仿真系统是当今虚拟现实技术研究的一个重要热点,它既具备场景表达的直观友好,也具备空间分析的抽象特征．即综合三维场景漫游与二维抽象分析的优势。该文阐述了在VC环境,对Vega所提供的API进行二次开发．实现虚拟城市三维场景的漫游,多种场景的渲染,并提供GIS基本查询的系统设计方案。设计思路包括三个过程：三维场景部分、二维分析部分、数据库管理部分,文章分别对它们的关键技术加以论述。     

合并纹理图像技术

该文在“CIG2000”基础上,提出了基于合并纹理图像的纹理映射技术。使用该技术可以解决为多个几何体制定同一幅纹理图像,以及一个几何体的不同面映射不同的纹理图像。因此提高了工作效率,大大影响处理速度。     

从定性定量研究考察数学的对象

从定性定量研究的需要出发,探讨了质和量的规定性、定性研究和定量研究的特点,介绍了恩格斯关于数学的对象的论断,关于数学的对象的一些新的提法以及从定性和定量研究的角度对这些提法的评价.结论是数学的对象依然如恩格斯所指出的,是现实世界的空间形式和量的关系.     

Modeling the quantum tunneling effect for a particle with intrinsic structure in presence of external magnetic field in the Lobachevsky space

Generalized Schrödinger equation for Cox spin zero particle is studied in presence of magnetic field on the background of Lobachevsky space. Separation of the variables is performed. An equation describing motion along the axis $z$ turns out to be much more complicated than when describing the Cox particle in Minkowski space.The form of the effective potential curve indicates that we have a quantum-mechanical problem of the tunneling type. The derived equation has 6 regular singular points. To physical domains $z=\pm \infty$ there correspond the singular points 0 and 1 of the derived equation. Frobenius solutions of the equation are constructed, convergence of the relevant series is examined by Poincaré–Perron method. These series are convergent in the whole physical domain $z\in (?\infty ,+\infty )$. Visualization of constructed solutions and numerical study of the tunneling effect are performed.     

Abnormality diagnosis of cracks in the concrete dam based on dynamical structure mutation

A method of the fuzzy cross-correlation factor exponent in dynamics is researched and proposed to diagnose abnormality of cracks in the concrete dam. Moreover, the Logistic time series changing from period-doubling bifurcation to chaos is tested first using this method. Results indicate that it can distinguish inherent dynamics of time series and can detect mutations. Considering that cracks in the concrete dam constitute an open, dissipative and complex nonlinear dynamical system, a typical crack on the do...     

柴油低温流动改进剂的分子结构与降滤性能的关系研究

利用定量构效关系(QSAR)研究方法,从反映柴油结晶过程能量变化的参数中,筛选出其中对低温流动改进剂(CFI)降滤性能影响最关键的能量参数E_(inter-CFI)和E_(ads-C18(111)),并构建了描述E_(inter-CFI)、E_(ads-C18(111))与CFI降滤性能关系的方程。用同样方法筛选了对E_(inter-CFI)和E_(ads-C18(111))影响最关键的CFI分子结构特征参数,并分别构建了CFI分子结构特征参数与E_(inter-CFI)和E_(ads-C18(111))的关系方程。通过对方程的分析,详细阐述了E_(inter-CFI)和E_(ads-C18(111))影响降滤性能的内在机制,并详述了CFI分子的关键结构因素对柴油中蜡晶的生长形貌可能产生的影响,以及这些影响与降滤性能之间的关系。