Vector

Vector pdf epub mobi txt 电子书 下载 2026

出版者:Putnam Publishing Group
作者:Cook, Robin
出品人:
页数:402
译者:
出版时间:
价格:$24.95
装帧:Hardcover
isbn号码:9780399144714
丛书系列:
图书标签:
  • 向量
  • 线性代数
  • 数学
  • 高等数学
  • 工程数学
  • 物理
  • 机器学习
  • 数据科学
  • 计算机科学
  • 算法
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具体描述

Amazon.com Robin Cook's latest plot--the threat of an anthrax [bacterium] turned loose in a New York government building and in Central Park--is ripped straight from the headlines, and as such it may be charitably described as having a certain lumpish quality in the prose and an overabundance of cuteness in the lead characters. Jack Stapleton and Laurie Montgomery, the dueling forensic pathologists who bounced off each other in Cook's Chromosome 6, collide and combine once again as a mad Russian cabdriver, who used to work in a Moscow bioweapons factory, comes up with a plan to punish America for not welcoming him with open arms. The cabby forms an unlikely alliance with two firemen who happen to be white supremacists; they fund his anthrax research to further their own lunatic schemes. Cook is, as ever, best at creating scenes of perfectly realized medical terror which plug into the paranoia of the moment. But if you want deep characters and sensitive description, read Fay Weldon. --Dick Adler From Publishers Weekly In this age of lethal bioweapons, there's a frightening logic in the idea that your next breath might kill you. Alas, Cook's latest, about an impending bioterrorist attack in New York City, is more ho-hum than horrifying. The premise has promise: cab driver Yuri Davydov is a disillusioned Russian immigrant haunted by his involvement in a tragic accidental release of government-produced anthrax that killed hundreds, including his mother. Armed with hatred for America and practical skills in how to build a biochemical weapon, he's joined forces with Curt Rogers and Steve Henderson of the People's Aryan Army. This catastrophic coalition aims to attack the Jacob Javits Federal Building and the Upper East Side; but for starters, Davydov tests his weapons on his own much-maligned wife and random, innocent rug merchant Jason Papparis. When medical examiner Jack Stapleton (last seen in Cook's Chromosome 6) does an autopsy on Papparis, the first of a series of plot-deadening coincidences occursAhe meets Davydov, who just happens to be cruising by to see if Papparis is dead. Too much "just happens" throughout this novel; worse, the investigators maddeningly bumble around obvious clues the reader has long since pieced together. Stapleton just happens to play basketball with the brother of Davydov's murdered wife; when autopsying the body of Aryan Army informant Brad Cassidy, he has a contrived hunch, and tests the body for anthrax poisoning. The whole plot, including the finale, hinges on happenstance, and Cook seems to know itAhis characters say things like, "What kind of weird coincidence could this be?" Cook's biotechnology research is rewarding, the pace is as pleasingly hectic as you'd expect from the author of Toxin, etc., and some of the characters are well drawn. But in the end, this potentially spine-tingling premise is undermined by a disappointing plot manifesting authorial machination rather than authentic, character-driven events. Copyright 1999 Reed Business Information, Inc. See all Editorial Reviews

这是一本关于理解和应用数学中“向量”这一基本概念的书籍。作者深入浅出地介绍了向量的定义、性质以及在各个领域的广泛应用。 本书首先从几何角度阐述了向量作为具有大小和方向的量,如何通过箭头表示,以及向量的相等、负向量和零向量等基本概念。接着,深入讲解了向量的加法和减法运算,包括平行四边形法则和三角形法则,并解释了标量乘法如何改变向量的大小和方向。 在代数方面,本书详细介绍了向量在坐标系中的表示,如二维和三维空间中的笛卡尔坐标,以及如何进行向量的坐标运算。读者将学习到如何计算向量的数量积(点积),理解其几何意义——两个向量夹角的余弦与它们大小的乘积,并掌握其在判断向量正交性和计算功等方面的应用。随后,本书会介绍向量的叉积(外积),重点在于其几何意义——生成一个垂直于两个原始向量的向量,其大小等于由这两个向量构成的平行四边形的面积,以及其在计算力矩、判断向量共面性等方面的作用。 本书并未止步于基础理论,而是将目光投向了向量在不同学科中的实际应用。在物理学领域,读者将看到向量如何被用来描述位移、速度、加速度、力、电场和磁场等物理量,以及如何利用向量运算解决各种力学和电磁学问题,例如合力的计算、运动轨迹的分析等。 在计算机图形学领域,向量更是不可或缺的工具。本书将展示向量如何在三维建模、动画制作、光照计算和相机变换中发挥关键作用,例如使用向量进行顶点变换、法线计算、纹理映射以及实现摄像机的移动和旋转。 线性代数是向量概念的天然舞台。本书将介绍向量空间、子空间、线性组合、线性无关、基和维数等核心概念,帮助读者构建起对向量空间结构的深刻理解。读者将学习如何利用向量来表示和求解线性方程组,理解矩阵与向量的乘法如何实现向量的线性变换,以及特征值和特征向量在描述变换特性和数据降维(如主成分分析)中的重要性。 此外,本书还探讨了向量在工程学、数据科学、优化算法以及更广泛的数学分支中的应用。例如,在工程领域,向量用于描述应力、应变、流体速度场等;在数据科学中,向量被用来表示数据点、计算相似度(如余弦相似度)、实现机器学习算法(如支持向量机);在优化问题中,梯度向量指引着函数下降的方向。 本书的编写风格力求严谨而易于理解,配有大量清晰的图示和精心设计的例题,帮助读者巩固所学知识。每个章节都包含练习题,以供读者检验和提升自己的理解能力。本书的目标是让读者不仅掌握向量的计算技巧,更能深刻理解其背后的数学原理,并能灵活地将其应用于解决实际问题。无论您是物理学、工程学、计算机科学的学生,还是对数学及其应用感兴趣的读者,本书都将是一份宝贵的学习资源。

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