1882年美国排华法案初探     

刘英俊 《绵阳师范学院学报》2003,22(3):85-89

美国的排华运动一直是学术界的一个重要研究课题,但迄今为止,还尚未有学者对此课题作个案分析.本文试图弥补这一不足,针对1882年美国排华法案进行初步研究.分析了排华法案产生的历史背景,分析了排华法案出台的根本原因是美国工人阶级日趋高涨的排华情绪被资产阶级政党利用的结果,并进而论述了排华针对性是包括华工在内的所有华人.然后,从美国对华移民政策、美国当时的现实情况、中美关系等方面,对该法案进行了反思.  相似文献   

A family of quasi-cubic blended splines and applications   总被引：4，自引：0，他引：4  

SU Ben-yue TAN Jie-qing 《浙江大学学报(A卷英文版)》2006,7(9):1550-1560

INTRODUCTION Bézier curves and uniform B-spline curves are powerful tools for constructing free form curves and surfaces (FFC/FFS). But they cannot represent the arcs, hyperbola, sphere, cylinders and other transcendental curves and surfaces exactly. In order to avoid the in- conveniences, many bases are presented in other new spaces (Zhang, 1996; Pe?a, 1997; Walz, 1997; Sánchez-Reyes, 1998; Mainar et al., 2001). Note that, these existing methods can deal with both polynomial curve…  相似文献   

AT89S51远距离数据采集保护装置的设计     

郭水旺 《天中学刊》2007,22(2):44-45

设计了以AT89S51单片机为核心的远距离数据采集保护装置,该装置针对分布式工业生产系统实现了信号采集的全数字化处理,能够自动判断电路故障,并且具有实时监测和参数轮流显示等功能.  相似文献   

Developing rigid constraint for the estimation of pose and structure from a single image     

魏宝刚  刘永怀 《浙江大学学报(A卷英文版)》2004,5(7):773-781

Pose and structure estimation from a single image is a fundamental problem in machine vision and multiple sensor fusion and integration.In this paper we propose using rigid constraints described in different coordinate frames to iteratively estimate structural and camera pose parameters.Using geometric properties of reflected correspondences we put forward a new concept,the reflected pole of a rigid transformation.The reflected pole represents a general analysis of transformations that can be applied to both 2D and 3D transformations.We demonstrate how the concept is applied to calibration by proposing an iterative method to estimate the structural parameters of objects.The method is based on a coarse-to-fine strategy in which initial estimation is obtained through a classical linear algorithm which is then refined by iteration.For a comparative study of performance,we also implemented an extended motion estimation algorithm(from 2D-2D to 3D-2D case)based on epipolar geometry.  相似文献   

GIS属性数据编辑界面编程     

刘文涛 《黄山学院学报》2006,8(5):42-43

采用Visual C 属性类编程,实现良好的属性编辑界面,以利于客户对众多的属性进行编辑与查询.  相似文献   

单片机设计中C函数和汇编子程序的相互调用及实例     

徐卫华 《楚雄师范学院学报》2002,17(3):40-42

本文讨论如何在Franklin C51和A51的编程过程中，实现C函数和汇编子程序的相互调用。内容涉及C51函数及其相关段的命名规则，调用中两种参数传递规则，最后，给出了一个在汇编中调用C51函数的实例。  相似文献   

Thermodynamic Optimization of DyCl_3-NaCl System     

叶信宇  孙益民  张静  谈君君 《上海大学学报(英文版)》2005,(3)

1Introduction Thethermodynamicpropertiesandphasediagrams ofDyCl3NaClsystemsareimportantintheproduction ofmetaldysprosium,andusefulinhightemperature chemicalreprocessingofwastenuclearfuelinfastre actors.IntheliteraturesomeaspectsofthesystemDyCl3NaCl[1,2]havebeendescribed.Seifertetal.[3]re mea suredthephasediagramIn1995.Thepseudobinary systemDyCl3NaClwasinvestigatedwithDTAandX raydiffraction.Ithasbeenfoundthatthreeincongru entlymeltingcompounds,NaDy2Cl7,NaDyCl4,and Na3DyCl6,existinthi…  相似文献   

AxisC 技术在Web服务开发中的应用研究     

刘东飞  王金花  胡从林 《教育技术导刊》2006,(1)

介绍了一种用来开发Web服务的技术——AxisC ;结合实际项目,在Linux操作系统下利用AxisC 构建、开发和部署了一个具有文件管理功能的Web服务。  相似文献   

Peer Teachers With Autism Teaching 3D Modeling     

Cheryl Wright  Marissa Diener  Scott Wright  Deborah Rafferty  Carly Taylor 《International Journal of Disability, Development & Education》2019,66(4):438-453

ABSTRACT

Few autism programmes address the needs of adolescents and young adults, and those that do are unlikely to include individuals with autism in the design and evaluation of the programme. This study involved nine youth with autism (ages 16–25) in the development and evaluation of a peer teaching programme where they taught three-dimensional modelling to other students with autism spectrum disorder. The methodology was participant-oriented research where the students with autism were co-designers and programme evaluators in the research. This approach highlighted their unique strengths and abilities and shifted the power such that they were leaders and not simply the recipients of knowledge from instructors. Four themes emerged through the qualitative analysis of the students’ perceptions of the peer teaching programme: 1) the meaning of peer teaching, 2) motivations for peer teaching, 3) challenges and 4) coping with the challenges of the role.  相似文献   

Numerical Calculation of Concrete Slab Response to Blast Loading     

KUZNETSOV Valerian A  WASCHL John 《天津大学学报(英文版)》2006,12(Z1)

In the present paper, a dynamic plastic damage model for concrete has been employed to estimate responses of a reinforced concrete slab subjected to blast loading. The interaction between the blast wave and the concrete slab is considered in 3D simulation. In the first stage, the initial detonation and blast wave propagation is modelled in 2D simulation before the blast wave reaches the concrete slab, then the results obtained from 2D calculation are remapped to a 3D model. The calculated blast load is compared with that obtained from TM5-1300. Numerical results of the concrete slab response are compared with the explosive test carried out- in the Weapons System Division, Defence Science and Technology Organisation, Department of Defence, Australia.  相似文献