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R语言实战(第2版)中文
该书是一本较好的R语言编程书籍,从认识到实战,手把手教你如何使用R语言进行数据分析、挖掘、画图等等。(This book is a good R language programming book, from understanding to actual combat, teach you how to use R language data analysis, mining, drawing and so on.)
- 2020-06-25 16:40:02下载
- 积分:1
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high-performance-cuda
本书共分5章:第1章介绍GPU通用计算的发展历程,介绍并行计算的历史、现状以及面临的问题;第2章介绍CUDA的使用方法,帮助理解CUDA的编程模型、存储器模型和执行模型,掌握CUDA程序的编写方法;第3章探讨CUDA硬件架构,深入分析Tesla GPU架构与CUDA通用计算的相互作用:第4章总结CUDA的高级优化方法,对任务划分、存储器访问、指令流效率等课题进行探讨;第5章以丰富的实例展示如何使用CUDA的强大性能解决实际问题。(This book is divided into five chapters: Chapter 1 introduces the development process of general-purpose GPU computing, parallel computing introduces the history, current situation and problems Chapter 2 describes the use of CUDA to help understand the CUDA programming model, the memory model and implementation model, master CUDA program writing method Chapter 3 explores CUDA hardware architecture, in-depth analysis of Tesla GPU architecture and CUDA general-purpose computing interactions: Chapter 4 summarizes the CUDA advanced optimization methods, the division of tasks, memory access, instruction stream efficiency and other topics were discussed Chapter 5 with abundant examples show how to use CUDA strong performance to solve practical problems.)
- 2013-11-04 18:44:09下载
- 积分:1
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SQL
本书对SQL技术的使用和发展进行了全面的讨论。全书共分六大部分,其中第一部分到第五部分分别介绍了SQL的历史和SQL标准的变化,如何使用SQL获取、更新数据,如何构造数据库结构以及如何实现数据的安全方案等,并描述了如何使用ANSI标准中的嵌入式SQL。(This book SQL technology use and development of a comprehensive discussion. The book is divided into six large part to the fifth part of the first part of which introduced the history and the SQL standard SQL changes, how to use SQL to obtain, update data, how to construct the database structure and how to implement data security programs, and describes the How to use the ANSI standard for embedded SQL.)
- 2010-03-04 00:11:47下载
- 积分:1
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雷达
说明: 提高雷达距离分辨率,内部有大量的实验结果,证明算法的可行性。(In order to improve the range resolution of radar, there are a lot of experimental results, which prove the feasibility of the algorithm.)
- 2020-04-05 11:49:48下载
- 积分:1
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123
是一个进程调度的程序,里面可以学到一些简单的进程调度,大家看一下吧(Is a process, the activation procedures, which can learn some simple process of scheduling, we look at it)
- 2009-01-14 13:33:29下载
- 积分:1
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《Python网络数据采集》
《Python网络数据采集》
第一部分 创建爬虫
第1章 初见网络爬虫 2
1.1 网络连接 2
1.2 BeautifulSoup简介 4
1.2.1 安装BeautifulSoup 5
1.2.2 运行BeautifulSoup 7
1.2.3 可靠的网络连接 8
第2章 复杂HTML解析 11
2.1 不是一直都要用锤子 11
2.2 再端一碗BeautifulSoup 12
2.2.1 BeautifulSoup的find()和findAll() 13
2.2.2 其他BeautifulSoup对象 15
2.2.3 导航树 16
……(Python Network Data Acquisition)
- 2019-05-07 11:58:38下载
- 积分:1
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C++
C++高级参考手册,对C++新学者有帮助!(C++ High reference manual, the C++ New scholars help!)
- 2009-01-07 14:37:10下载
- 积分:1
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Python
Python灰帽子:黑客与逆向工程师的Python编程之道]英文文字版(Hackers and reverse engineer the Python the tao of programming)
- 2017-03-18 22:31:56下载
- 积分:1
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Lua程序设计(第2版)中文
Lua编程入门书籍,Lua程序设计第二版(中文版)(Lua Programming Introduction Book, Lua Programming (Chinese Edition))
- 2020-06-25 04:00:02下载
- 积分:1
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NURBS110707
高速切削加工技术是一种先进的制造技术,具有强大的生命力和广阔的应
用前景,已成为切削加工的主流。数控插补技术是数控系统实现轨迹运动控制
的基础,插补运算是CNC系统软件实现运动控制的核心模块,插补算法的优劣
将直接影响到CNC系统的性能。因此,实现一种高精度和高速度的插补方法是
插补的关键所在。
本文在分析传统基准脉冲插补、数据采样插补的算法的基础上,着重研究
了三次NURBS曲线实时插补技术,针对部分算法的不完整或效率低,提出了
一种简单快捷的插补算法。采用NURBS曲线的矩阵表达式,将整个插补过程
分解为插补预处理和实时插补。在插补预处理中完成了大量的计算,预处理的
计算结果直接应用于实时插补,使插补算法满足了NURBS曲线插补的实时性
要求,再辅以必要的轮廓误差控制,实现了加工速度自适应于加工路径的
NURBS曲线直接插补。
本文讨论的插补算法采用C++语言实现,并在VC++6.0的编程环境中实现
了插补算法的计算机仿真,验证了算法的正确性和可行性。(The high speed cutting is one of advanced manufacture technique,which has the powerful vitality and the broad application,and already became the mainstream of machining.The interpolation technology of NC is the foundation of path s control in the CNC system,and the interpolation operation is the core module of
CNC system software,which comes the motion control true.The interpolation
algorithm,whose function is good or bad,directly influences the performance of CNC system.So,a kind of interpolation method with the high accuracy and high speed is the key of interpolation.
Based on analyzing the traditional pulse interpolation and data sampling
interpolation,this paper emphasizes on the NURBS curve real-time interpolation
technology.In view of the partial algorithms which is incomplete and the low efficiency,this paper propose a simple and quick interpolation algorithm.Using the
matrix representation of NURBS curve,the whole interpolation process is divided into appropriate pretreat)
- 2011-07-07 11:46:17下载
- 积分:1