The surface Helmholtz integral equation dispersed by quadratic iso_parametric element is used as computation equation. Extensive work has been performed to overcome boundary integral equation in acoustic problems, non_uniqueness of solution and singular integral kernels.

A Kind of Two-dimension Code word Structure of OCDMA System and Fiber Bragg Grating En-/ De-coder

一种OCDMA二维码字结构及光纤光栅编/解码器

Two-dimension bar code is a latest automated recognition technology developed from one-dimension bar code, which is widely utilized in many countries.

二维条码技术是在一维条码基本上发铺起来的应用范畴非常普遍的一种新兴自动识别技术，在世界各国中得到重视和推广应用。

Through update FPGA logic and system software, this platform can support two-dimension code, RFID card and Security control functions, which prove the advantages of SoPC technology& soft/ hardware reconfigurable and platform reuse-able.

另外，通过对升级与更改FPGA硬件逻辑以及系统软件，可使系统平台支持二维条码扫描、RFID卡读写，门禁控制等功能，实现了软硬件体系的可重构与平台的可重用。

Synthetically using the two-dimension bar code technology, bluetooth technology, digital imaging technology, micro-controller technology, flash memory technology, LCD and touch screen technology, a goods delivery confirmation system is invented and a portable information collection device is designed to gear to the modern logistics.

在此基础上综合运用二维条码技术、蓝牙技术、数字成像技术、微控制器技术、闪速存储器技术、液晶显示技术和触摸屏技术，设计并开发了适应现代物流运行需要的掌上物流数据采集器。

Identity authentication system based on fingerprinting and two-dimension bar code technology

基于指纹识别和二维条码技术的身份认证系统

University large equipment and instrument information management system based on two-dimension bar code technique

基于二维码技术的高校大型仪器设备信息管理系统

Using encryption algorithm to encrypted the data, and then using the QR two-dimension bar code to express the encrypted data can enhance the security of data.

利用加密算法对数据加密，然后将加密数据使用QR二维条码表示，可以增强数据的安全性。

According to the sample information security requirements of material intelligent system, analysis of the commonly used two-dimensional bar code character, determined the design plan which using QR two-dimension bar code as a power plant sensitive information carrier.

论文所做的主要工作有：1.根据物料智能采制系统中样品信息安全性需求，分析了常用的二维条码的特性，确定了选择QR二维条码作为电厂敏感信息的载体的设计方案。

Creating and distinguishing software of two-dimension bar code

二维条形码生成与识别软件

Two-dimension bar code is higher level of one-dimension. Base on the characteristic of ISO-417 about two-dimension bar code, this thesis explains some coding and decoding algorithm of text compact mode, byte compact mode and digital compact mode, and shows program scheme.

二维条形码是一维条形码的升级，本文根据国际四一七二维条形码的特点阐述了文本压缩模式，字节压缩模式和数字压缩模式的编码算法及译码算法，并给出了程序框图。

Especially two-dimension code has a wide range of applications in transport and logistics, identification, advertising, marketing and e-commerce and many other aspects, it is the most economic, practical automatic identification technology.

尤其是二维码在物流运输、身份识别、广告行销和电子商务等很多方面具有广泛的应用，是目前最经济、实用的自动识别技术。

The paper describes the background knowledge as well as the anti-counterfeiting technology of two-dimension code, and introduces terms, techniques and related algorithms.

论文首先介绍了背景知识以及二维码防伪技术的现状，之后介绍了课题中涉及的相关术语、技术以及相关算法。

The kinetic features of super hot electrons emitting out of the rear side of metal target is simulated and the reflux is studied by a two-dimension PIC code in cylindrical coordinates.

利用柱坐标系下的二维PIC程序对金属靶背向超热电子束的运动特性进行了模拟，研究了超热电子的回流机制。

QR ( Quick Response) two-dimension bar code is a rapid developed, widely used bar code technology in last few years.

QR二维条码是近几年来发展比较迅速，应用比较广泛的一种条码技术。

And the experimental results proves that this system can recognize two-dimension bar code well and satisfy the real-time request of mobile terminal.

实验证明该系统具有较高的二维条码识别率，可满足移动端实时性的要求，并且可通过移动端操作系统内置浏览器成功登陆WAP站点。

Through analyzing the demand of the terminal users and the demand of the enterprise on the supplier, and by using the tool of bivariate table, this paper tries to set up the selection model of enterprise's supply chain management strategy.

通过对终端客户的需求情况和企业对供应商的需求情况进行分析，利用二维表的工具尝试建立了企业供应链管理战略的选择模型。

The 3-D space robot collision-free trajectory planning problem, by means of geometry-graphics method in 2-D space, is resolved.

借鉴二 维 空间的几何图形法解决了 三维 空间机器人无碰撞轨迹规划问题.

The algorithm considering the condition of planar adjacency relationship is defined again newly the general clustering.

从聚类概念出发,重新定义了满足二维空间邻接条件聚类的概念.

Current, they are striding to three dimensional space from the 2 dimension space of digital map.

现在, 他们正在从数字地图的二维空间向三维空间迈进.

Vectors in the two-dimensional space.

二 维 空间之向量.