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说明：  TDOA通过四站定位，确定三个辅站从而计算出主站坐标(This code discrabes the tdoa about math)

Teradat语言扩展了标准数据库语言，使用起来更加灵活，开发效率更高(Teradat language extends the standard database language, to use more flexible, more efficient development of)

one exercise from icarnegie ssd1

说明：  C++经典教程，讲解思路循序渐进，逐渐引入模块化的编程思想和面向对象的编程思想。适合初学者和以有一定基础的人(C++ classic course, on the idea of gradual, progressive thinking of the introduction of modular programming and object-oriented programming ideas. Suitable for beginners and those who have a certain basis)

微软新版操作系统windows vista的向导。大多数的电脑最终会向这个微软耗资巨大的系统转向，了解和熟练使用它，则为必须。(new Microsoft operating system windows vista of the Wizard. Most of the computer will ultimately cost to the Microsoft system tremendous shift, understanding and skilled use it, compared to the need.)

几篇关于机器学习的PPT课件。A few PPT coursewares about machine learning.(A few PPT coursewares about machine learning.)

运筹学是现代管理学的一门重要专业基础课。它是20世纪30年代初发展起来的一门新兴学科，其主要目的是在决策时为管理人员提供科学依据，是实现有效管理、正确决策和现代化管理的重要方法之一。该学科是一应用数学和形式科学的跨领域研究，利用统计学、数学模型和算法等方法，去寻找复杂问题中的最佳或近似最佳的解答。运筹学经常用于解决现实生活中的复杂问题，特别是改善或优化现有系统的效率。 研究运筹学的基础知识包括实分析、矩阵论、随机过程、离散数学和算法基础等。而在应用方面，多与仓储、物流、算法等领域相关。因此运筹学与应用数学、工业工程、计算机科学、经济管理等专业密切相关。( Operations research is an important basic course of modern management. It is the beginning of the 1930s developed a new discipline, its main purpose is to provide management decision-making scientific basis, it is to achieve effective management, one of the important decisions the right way and modern management. The interdisciplinary research discipline is a form of applied mathematics and science, using statistical, mathematical models and algorithms and other methods to find the complex issues in the best or near-best solution. Operations research is often used to solve complex problems in real life, especially to improve or optimize the efficiency of existing systems. Basics of operations research include real analysis, matrix theory, stochastic processes, discrete mathematics and algorithms base and the like. In the application, more associated with warehousing, logistics, algorithms and other fields. Therefore, operations research is closely related to applied mathematics, indu)

Ansys 中变截面连续箱梁建模，静力分析，模态分析以及设计弯矩绘制，影响线的绘制等。(Variable cross-section continuous box girder model in Ansys, the static analysis, modal analysis, and design bending moment, influence line drawing, etc.)

说明：  《Python数据挖掘入门与实践》 本书为数据挖掘入门读物，介绍了数据挖掘的基础知识、基本工具和实践方法，通过循序渐进地讲解算法，带你轻松踏上数据挖掘之旅。本书采用理论与实践相结合的方式，呈现了如何使用决策树和随机森林算法预测美国职业篮球联赛比赛结果，如何使用亲和性分析方法推荐电影，如何使用朴素贝叶斯算法进行社会媒体挖掘，等等。本书也涉及神经网络、深度学习、大数据处理等内容。(Introduction and Practice of Python Data Mining)

说明：  GYZ 203－2004 数字电视广播电子节目指南规范，在我没上传前，好像是下载不到的(GYZ 203-2004 standard digital television electronic program guide, I did not upload before, seems to be downloading less than the)