结果:找到“mathematical economic”相关内容254个,排序为按回复时间降序,搜索更多相关帖子请点击“高级
免费:经济数学分析引论:An Introduction to Mathematical Analysis in Economics
12 个回复 - 4200 次查看 经济数学分析引论:An Introduction to Mathematical Analysis in Economics2010-1-29 09:22 - 摘星 - 计量经济学与统计软件
【独家发布】An Introduction to Mathematical Analysis for Economic Theory and Econometr
67 个回复 - 14632 次查看 【2009】An Introduction to Mathematical Analysis for Economic Theory and Econometrics Book 图书名称:An Introduction to Mathematical Analysis for Economic Theory and Econometrics Author 作者: Dea ...2018-5-10 22:46 - kychan - 宏观经济学
基于Carl P. Simon 经济学中的数学:厦大学习资料Mathematical Economics
2 个回复 - 917 次查看 基于Carl P. Simon 经济学中的数学:厦大学习资料Mathematical Economics 下载前,请参考下面的截图说明的教学大纲! 基于Carl P. Simon 经济学中的数学:厦大学习资料Mathematical Economics 基于 ...2022-4-4 16:07 - Lamarr-202110 - 现金交易版
Mathematical Methods and Models in Economic Planning, Management and Budgeting
122 个回复 - 21982 次查看 This book describes a system of mathematical models and methods that can be used to analyze real economic and managerial decisions and to improve their effectiveness. Application areas include: manage ...2014-11-11 03:05 - 大家开心 - 经济金融数学专区
Student Answer Key for Mathematical Statistics for Economics and Business
2 个回复 - 1752 次查看 作者:Ron C. Mittelhammer, School of Economic Sciences Washington State University Pullman, Washington USA ‘Mathematical Statistics for Economics and Business’ 一书的习题解答,相当实用!解答相当 ...2020-11-17 02:03 - jinshunwu - 计量经济学与统计软件
Mathematical Economics上财经济数学, 上财数理经济学
4 个回复 - 1469 次查看 Mathematical Economics上财经济数学, 上财数理经济学 学习资料整理 教学参考用书References 1.Sundaram, A First Course in Optimization Theory, 1996, CambridgeUniversity Press. (*) 2.Rudin, Princ ...2021-11-30 08:23 - Lamarr-202110 - 现金交易版
2014免费新书来了:Mathematical Methods in Economics and Social Choice
176 个回复 - 23810 次查看 Mathematical Methods in Economics and Social Choice Series: Springer Texts in Business and Economics ...2013-10-26 21:46 - rmatrix - 金融工程(数量金融)与金融衍生品
经济学的结构(the structure of economics--a mathematical analysis ) 中英版打包
61 个回复 - 21562 次查看 如题 经济学的结构(the structure of economics--a mathematical analysis ) 中英版打包 Silberberg and Wing Suen 经典教材 中文版 英文版 都是第三版2011-9-23 10:58 - 缠中说禅117 - 微观经济学
Advanced Mathematical Economics 08 pages | PDF Rakesh V. Vohra作品英文原版
8 个回复 - 4052 次查看 Rakesh V. Vohra, "Advanced Mathematical Economics" English | 2005-01-12 | ISBN: 0415700086 | 208 pages | PDF | 30.0 mb This concise textbook presents students with all they need for advancing in mat ...2014-2-8 10:00 - -Nathan - 计量经济学与统计软件
Mathematical Methods for Economic Analysis
4 个回复 - 1862 次查看 Paul Schweinzer 关于数理经济学的教材 本人花了15个币购得,现在零头价格出售以对冲损失2010-6-25 08:43 - shiningwang1980 - 经济金融数学专区
Mathematical Economics (Baldani, Bradfield, and Turner)谁有啊?
6 个回复 - 3341 次查看 Mathematical Economics by (Baldani, Bradfield, and Turner)谁有啊?2009-5-8 13:14 - knightwade - 计量经济学与统计软件
求 Baldani, J., Bradfield, J. & Turner, R (2005), Mathematical Economics
3 个回复 - 1822 次查看 求书 Baldani, J., Bradfield, J. & Turner, R (2005), Mathematical Economics 求电子版2015-2-24 21:09 - 暗鸦 - 悬赏大厅
【数理经济前沿】Advances in Mathematical Economics Volume 20
103 个回复 - 7688 次查看 应各位朋友要求,现降价出售7天,要随时跟踪最新好书,请点击头像下方“加关注”。关注成功后,更多好书应有尽有。 The series is designed to bring together those mathematicians who are seriously intere ...2016-7-19 00:08 - exuan1991 - 金融学(理论版)
Mathematical Methods of Game and Economic Theory(Jean-Pierre Aubin)
14 个回复 - 5445 次查看 2007年新版封面 【资料名称】:Mathematical Methods of Game and Economic Theory (Studies in Mathematics and Its Applications Volume 7) 【资料作者】:Jean-Pierre Aubin 【出版社】: North-Ho ...2009-12-3 14:16 - showerxiaoer - 经济金融数学专区
Mathematical Optimization and Economic Analysis
5 个回复 - 2423 次查看 [*]A detailed presentation of both single-objective and multiobjective optimization[*]An in-depth exposition of various applied optimization problems[*]Implementation of optimization tools to improve ...2011-1-9 13:37 - ljq91888 - 宏观经济学
Mathematical Methods in Dynamic Economics
3 个回复 - 989 次查看 Mathematical Methods in Dynamic Economics Andras Simonovits First published in the United States of America 2000 by ST. MARTIN'S PRESS, INC.2015-10-27 22:03 - toughxiaoqiang - 微观经济学
Elements of Numerical Mathematical Economics with Excel:Static and Dynamic 2020
3 个回复 - 1495 次查看 Elements of Numerical Mathematical Economics with Excel:Static and Dynamic Optimization Excel数值数学经济学原理:静态和动态优化 20202022-3-30 18:32 - tangdh - 投资人(实务版)
Lecture Notes in Economics and Mathematical Systems系列图书全集(已收集301本)
23 个回复 - 3569 次查看 Lecture Notes in Economics and Mathematical Systems 这套书籍由Springer 出版,1967-2017年共出版了670本,我通过各种渠道下载了一些,目前共301本,现发出来共享。 Lecture Notes in Economics and Mathematica ...2017-1-14 13:17 - hansong2322 - 金融学(理论版)
Mathematical Optimization and Economic Theory
4 个回复 - 3486 次查看 michael intriligator mathematical optimization and economic theory2010-10-14 09:27 - wangxhlz - 经济金融数学专区
How Economics Became a Mathematical Science (Science and Cultural Theory)
4 个回复 - 2420 次查看 How Economics Became a Mathematical Science (Science and Cultural Theory) By E. Roy Weintraub * Publisher: Duke University Press * Number Of Pages: 328 * Publication Date: ...2010-1-22 03:41 - zhaohailei - 微观经济学
Foundations of mathematical economics
8 个回复 - 4140 次查看 Foundations of mathematical economics by Michael Carter 高清英文版,带搜词 The MIT Press Cambridge, Massachusetts London, England 目录: Contents Introduction xi A Note to the Reader xvii 1 S ...2009-11-4 15:33 - wlrobert - 微观经济学
Economic-Mathematical Methods and Models under Uncertainty
58 个回复 - 6167 次查看 In this book on mathematical programming, the postulate spacial-time certainty of economic process at uncertainty conditions in finite-dimensional vector space and the principle piecewise-linear homog ...2014-9-1 05:24 - 大家开心 - 微观经济学
数学优化和经济分析 Luptacik M. Mathematical optimization and economic analysis
2 个回复 - 1499 次查看 内容: "Mathematical Optimization and Economic Analysis" is a self-contained introduction to various optimization techniques used in economic modeling and analysis such as geometric, linear, and conve ...2014-5-22 11:57 - SirKay - 经管书评
How Economics Became a Mathematical Science
7 个回复 - 1372 次查看 Acknowledgments xi Prologue 1 1 Burn the Mathematics (Tripos) 9 2 The Marginalization of Griffith C. Evans 41 3 Whose Hilbert? 72 4 Bourbaki and Debreu 101 5 Negotiating at the Boundary (with Te ...2015-3-1 19:29 - hch_liu - 经济金融数学专区
Ron C. Mittelhammer的《mathematical statistics for economics and business》2013
6 个回复 - 2433 次查看 如题,Ron C. Mittelhammer 《mathematical statistics for economics and business》Second Edition, 2013。讲的比较清晰简洁,对于理解计量的理论知识非常的有用。 我们博士课程的计量经济学就是用的这本书。推荐个 ...2016-1-4 03:45 - worldboom - 经济统计专版
Mathematical Statistics for Economics and Business-Second Edition
3 个回复 - 2033 次查看 急需金币,卖书买书。 2.2.3 Continuous Random Variables and Probability Density Functions 53 2.2.4 Classes of Discrete and Continuous PDFs 57 2.2.5 Mixed Discrete-Continuous Random Variables 60 ...2014-4-12 12:09 - deep2008 - 计量经济学与统计软件
Mathematical Statistics for Economics and Business
3 个回复 - 1474 次查看 Mathematical Statistics for Economics and Business Front Matter Pages i-xxix Book Chapter Pages 1-44 Elements of Probability Theory Book Chapter Pages 45-109 Random Variables, Densiti ...2013-10-8 22:13 - 牛尾巴 - R语言论坛
Microeconomic Theory: A Mathematical Approach (very old one)
6 个回复 - 1372 次查看 Microeconomic Theory: A Mathematical Approach by James Mitchell Henderson (Author), Richard E. Quandt (Author) website reference: https://www.amazon.com/Microeconomic-Theory-Mathematical- ...2016-11-27 18:08 - timnin - 微观经济学
【教材】Mathematical Economics 【ARIKA TAKAYAMA】
8 个回复 - 2682 次查看 MATHEMATICAL ECONOMICS AKIRA TAKAYAMA Purdue University THE DRYDEN PRESS2013-5-7 13:36 - lu_ckyeveryday - 宏观经济学
Mathematical_Modelling_in_Economics
3 个回复 - 1124 次查看 这边本书很不错2017-8-27 22:48 - wang_ql - 跨学科讨论区
Handbook of Mathematical Economics
6 个回复 - 2661 次查看 和老师聊天时提到这本书,发出来给大家用吧~~2010-1-17 19:58 - lhurricane - 计量经济学与统计软件
[True PDF] Schaum’s Introduction to Mathematical Economics, 3e, by Dowling
3 个回复 - 1315 次查看 The ideal review for your intro to mathematical economics course. More than 40 million students have trusted Schaum’s Outlines for their expert knowledge and helpful solved problems. Written by reno ...2017-11-25 18:19 - Yepoet78 - 微观经济学
Foundations of Mathematical and Computational Economics, Second Edition
8 个回复 - 2516 次查看 This is a book on the basics of mathematics and computation and their uses in economics for modern day students and practitioners. The reader is introduced to the basics of numerical analysis as w ...2011-6-15 14:30 - wypbc - 经济金融数学专区
Mathematical Economics
3 个回复 - 1032 次查看 Mathematical Economics2019-8-16 23:06 - rachelshaw - 宏观经济学
2013免费新书 Mathematical Statistics for Economics and Business 2ed
15 个回复 - 3451 次查看 Mathematical Statistics for Economics and Business 2ed Ron C. Mittelhammer 2nd ed. 2013, XXIX, 755 p. 93 illus. Ron C. Mittelhammer, "Mathematical Statistics for Economics and Business" ...2013-11-16 21:53 - rmatrix - 计量经济学与统计软件
【经典教材系列】Mathematical Financial Economics
171 个回复 - 32405 次查看 2015年最新教材降价出售期已过!想要随时跟踪最新好书,请点击头像下方“加关注”。关注成功后,查看这里即可:三步走,把千本好书“一网打尽”!。 欢迎订阅wwqqer文库! 欢迎订阅“经管之家系列文库”,全论坛 ...2015-5-28 01:43 - wwqqer - 量化投资
Mathematical Economics and Finance
8 个回复 - 3874 次查看 《Mathematics for Economics and Finance》 -Routledge (2011) Michael Harrison, Patrick Waldron 内容简介 The aim of this book is to bring students of economics and finance who have only ...2015-1-7 22:32 - jamessun1996 - 经济金融数学专区
Mathematical Optimization and Economic Theory教材分享
6 个回复 - 1683 次查看 optimization的经典教材 Michael D. Intriligator-Mathematical Optimization and Economic Theory 希望对大家有用~~ 感谢支持~2017-8-8 16:04 - chloelzx123 - 微观经济学
文献分享:Handbook of Mathematical Economics, Volume 1
1 个回复 - 1039 次查看 "The Handbook of Mathematical Economics" aims to provide a definitive source, reference, and teaching supplement for the field of mathematical economics. It surveys, as of the late 1970's the state of ...2022-3-19 20:24 - lyric246124 - Forum
Fundamental Methods of Mathematical Economics 4e
2 个回复 - 915 次查看 2022-5-17 09:46 - tracey233 - 经济统计专版
Handbook of Mathematical Economics 数理经济学手册
7 个回复 - 4474 次查看 Rt 一共四册2010-9-19 02:34 - ericericilove - 农林经济学
Foundations of Mathematical Economics by Michael Carter
6 个回复 - 3195 次查看 高年级本科生,研究生数理经济学教材2020-6-11 15:54 - Lucas1998 - 经济金融数学专区
《数学经济学学报》Journal of Mathematical Economics Vol 35-Vol 49
266 个回复 - 79402 次查看 Journal of Mathematical Economics ~向版主申请加精~ In the Editors view, the formal mathematical expression of economicideas is of vital importance to economics. Such an expression can determine wh ...2013-4-2 04:23 - holigeniuson - 经济金融数学专区
数理经济学 第四版 Fundamental Methods of Mathematical Economics
3 个回复 - 3763 次查看 Fundamental Methods of Mathematical Economics作者:Alpha C. Chiang, Kevin Wainwright 出版社:McGraw-Hill 年份:2005 ISBN:00712382392018-12-7 11:51 - YUYYUUII0 - 计量经济学与统计软件
Mathematical economics 数理经济学课件
8 个回复 - 5560 次查看 厦大王亚南经济研究院本科内部课件,利益相关不多说精品课件,需要的自取,谢谢支持 **** 本内容被作者隐藏 ****2015-9-20 20:26 - william2568 - 微观经济学
【新书】数理经济学原理Principles of Mathematical Economics _Shapoor Vali
168 个回复 - 25799 次查看 【新书】数理经济学原理 Principles of Mathematical Economics (Mathematics Textbooks for Science and Engineering) by Shapoor Vali English | 2013 | ISBN: 9462390355 | 520 pages | PDF | 7MB 【作者简 ...2014-1-19 13:34 - saintsophia - 微观经济学
Kenneth J. Arrow 著作!非扫描高清版 Handbook of Mathematical Economics, Volume I
43 个回复 - 10100 次查看 Kenneth J. Arrow 著作!非扫描高清版 Handbook of Mathematical Economics, Volume I The Handbook of Mathematical Economics aims to provide a definitive source, reference, and teaching supplement for ...2016-4-14 00:15 - exuan1991 - 金融学(理论版)
[下载]Mathematical economics(田国强)
46 个回复 - 12485 次查看 据victorsxs说下载这个要100.。贼拉疯狂。。俺不知道是不是就是俺这个。。大家看看。。不要大家钱,也不给大家钱。。自个儿支持自个一下。。2007-11-8 16:28 - brownie - 经济金融数学专区
Methods of Mathematical Economics: Linear and Nonlinear Programming,
10 个回复 - 7589 次查看 Methods of Mathematical Economics: Linear and Nonlinear Programming, Fixed-Point Theorems Joel N. Franklin | ISBN: 0898715091 | January 15, 2002 | 297 pages | Many advances have taken place in the ...2010-6-25 12:42 - shiningwang1980 - 计量经济学与统计软件
Foundations of Mathematical and Computational Economics 2nd edition
21 个回复 - 11473 次查看 Fundations of Mathematical and Computational Economics [Second Edition] 内容涵盖了数理经济基础和数值方法 从理论到应用 非常全面!还附有excel matlab maple操作!! 目录如下: Part I Basic Concepts ...2014-6-10 12:09 - luxiongbiao - 微观经济学
Fundamental Methods of Mathematical Economics 4e
4 个回复 - 2015 次查看 Fundamental Methods of Mathematical Economics 4e Fundamental Methods of Mathematical Economics 4e Fundamental Methods of Mathematical Economics 4e 百度网盘百度网盘百度网盘2022-3-20 16:27 - 雪舞霜晨 - 经济金融数学专区
Mathematical Modelling in Economics
46 个回复 - 14085 次查看 This volume presents a collection of more than sixty papers on mathematical economics. All papers use a model-based approach. The focus of the book is to demonstrate the state-of-the-art in modelling ...2015-5-23 05:03 - lasgpope - 量化投资
【经典教材系列】Principles of Mathematical Economics II (Solution Manual)
55 个回复 - 4786 次查看 欢迎订阅wwqqer文库!2015-3-28 01:05 - wwqqer - 微观经济学
Mathematical Modeling in Economics and Finance
2 个回复 - 1718 次查看 Mathematical Modeling in Economics and Finance: Probability, Stochastic Processes, and Differential Equations (AMS/MAA Textbooks)Mathematical Modeling in Economics and Finance is designed as a textboo ...2019-9-18 09:45 - 111hghero - 微观经济学
Mathematical Methods for Economic Analysis
2 个回复 - 2547 次查看 理论经济学数理教科书 集合理论,最优化理论,纳什均衡,的严密证明与图解。 适合经济学phd课程 介绍内容如下 We will start with a refresher on linear programming, particularly Lagrange Theory. The probl ...2020-5-12 01:54 - eol28954 - 经济金融数学专区
Fundamental Methods of Mathematical Economics
3 个回复 - 2428 次查看 Fundamental Methods of Mathematical Economics2014-9-9 09:07 - wangz12 - 新手入门区
【2018新书】Advances in Mathematical Economics: Volume 22
16 个回复 - 8282 次查看 Advances in Mathematical Economics: Volume 22 by Shigeo Kusuoka (Editor), Toru Maruyama (Editor) About the author Shigeo KUSUOKA, Graduate School of Mathematical Sciences, The University of Tokyo ...2018-8-2 07:04 - slowry - 金融学(理论版)
【2014新书】经济数学模型Mathematical Modeling in Economics_Natali Hritonenko
158 个回复 - 20459 次查看 【2014新书】经济、生态与环境科学中的数学模型(第2版) Mathematical Modeling in Economics, Ecology and the Environment 2nd edition By Natali Hritonenko, Yuri Yatsenko 2014 | 305 Pages | ISBN: 1461493 ...2014-2-14 21:16 - saintsophia - 微观经济学
Michael Klein's Mathematical Methods for Economics
6 个回复 - 3596 次查看 各位大神,小弟求一本Economics PhD level的一本数学教材 Mathematical Methods for Economics by Micheal.W.Klein, 无论是第一还是第二版都可以。 万分感谢。2015-3-8 17:43 - phiestcole - 经济金融数学专区
一本非常好的经济数学教材:An Introduction to Mathematical Analysis in Economics
14 个回复 - 8828 次查看 一本非常好的经济数学教材,难度比常用的教材略高 An Introduction to Mathematical Analysis in Economics Introduction 13 1.1 Rules of logic . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 ...2009-10-24 14:12 - guof1984 - 经济金融数学专区
Michael Klein's Mathematical Methods for Economics
0 个回复 - 566 次查看 求各位大神 有没有标题里的书 求大神分享2022-3-1 16:52 - Shaoyr - 新手入门区
Schaum's Outline of Introduction to Mathematical Economics
3 个回复 - 1167 次查看 Schaum's Outline of Introduction to Mathematical Economics2018-9-5 08:46 - kawazhang - 商学院
【新春礼炮】Fundamental Methods of Mathematical Economics (4e)与习题全解
159 个回复 - 30579 次查看 【新春礼炮,值得再三推荐的教科书】数理经济学基本方法(4e)与教师手册(习题全解) Fundamental Methods of Mathematical Economics (4e)and Instructor’s Manual Publisher: McGraw-Hill/Irwin | ISBN: ...2014-1-30 13:12 - saintsophia - 经济金融数学专区
Contributions to Mathematical Economics
0 个回复 - 545 次查看 【作者(必填)】W. Hildenbrand and A. Mas-colell 【文题(必填)】Contributions to Mathematical Economics: In Honor of Gérard Debreu 【年份(必填)】1986 【全文链接或数据库名称(选填)】Amsterdam: N ...2020-8-11 18:51 - myazure - 文献求助专区
Principles of Mathematical Economics 数理经济学原理
2 个回复 - 1928 次查看 包含了习题手册,无意间发现的一本数理经济学教材,通俗易懂,篇幅没那么厚重(500多页),且读起来很轻松2020-6-10 18:24 - Lucas1998 - 经济金融数学专区
Fundamental Methods of Mathematical Economics- Chiang
8 个回复 - 3689 次查看 2014-11-11 02:38 - nzau - 金融学(理论版)
Mathematical Models of Economic Growth and Crises
22 个回复 - 1680 次查看 Nova | English | 2017 | ISBN-10: 1536120448 | 226 Pages | PDF | 4.23 MB[/backcolor] by Alexei Krouglov (Author)[/backcolor] Download: **** 本内容被作者隐藏 ****[/backcolor]2020-1-13 07:30 - Nicolle - winbugs及其他软件专版
Foundations of Economic Psychology: A Behavioral and Mathematical Approach
27 个回复 - 3553 次查看 Foundations of Economic Psychology: A Behavioral and Mathematical Approach, 1st ed. 2019 Edition by Kazuhisa Takemura (Author) About the Author Kazuhisa Takemura is a Japanese psychologist and ed ...2019-7-27 17:59 - slowry - 金融学(理论版)
Advances in Mathematical Economics Volume 13
4 个回复 - 1963 次查看 Advances in Mathematical Economics Volume 13 Advances in Mathematical Economics is a publication of the Research Center for Mathematical Economics, which was founded in 1997 as an international ...2010-12-31 00:08 - terrytong - 经济金融数学专区
fundamental methods of mathematical economics - 4e
8 个回复 - 2777 次查看 by Alpha Chiang2014-3-7 00:59 - dongdong1010 - 金融学(理论版)
请问大家有这本书的中文翻译版吗 mathematical financial economics
1 个回复 - 1079 次查看 或者指导我一下怎么读懂它 留学生要哭晕在宿舍了 完全看不懂2019-8-3 02:01 - Floraaaaaaaaaaa - 爱问频道
【新书】经济学中的数学方法Mathematical Methods in Economics (2nd ed.)
150 个回复 - 13201 次查看 【2014新书】经济学与社会选择中的数学方法 Norman Schofield, "Mathematical Methods in Economics and Social Choice, 2nd edition" English | ISBN: 3642398170 | 2014 | 300 pages | PDF | 4 MB 【作者 ...2013-10-28 00:36 - saintsophia - 微观经济学
数理经济学基础(Fundamental Methods of Mathematical Economics) by Alpha C. Chiang
60 个回复 - 29269 次查看 蒋中一的数理经济学基础方法第3版+第4版答案,绝对清晰英文扫描pdf文件,收藏、打印的佳品。亚马逊原书简介:http://www.amazon.com/Fundamental-Methods-Mathematical-Economics-Chiang/dp/0070108137Fundamental M ...2007-10-6 15:23 - congbaobao - 计量经济学与统计软件
[习题答案] Alpha and Wainwright, Fundamental Methods of Mathematical Economics
30 个回复 - 11123 次查看 Alpha and Wainwright, Fundamental Methods of Mathematical Economics 4th edition 的所有习题答案2009-1-26 18:53 - dorisleety - 计量经济学与统计软件
Mathematical Modeling in Economics and Finance: Probability, Stochastic Processe
0 个回复 - 757 次查看 【作者(必填)】 Steven R. Dunbar 【文题(必填)】 Mathematical Modeling in Economics and Finance: Probability, Stochastic Processes, and Differential Equations 【年份(必填)】 2019 【全文链接或数据 ...2019-5-6 07:59 - peter - 文献求助专区
[下载]Franklin J.N. Methods of Mathematical Economics & Varaiya P. Lecture Not
18 个回复 - 7574 次查看 共享两本书最优化理论的书, 都是我读过的最好的. 1. Varaiya P. Lecture Notes on Optimization这本书也可以在作者的主页下载. 2. Methods of Mathematical Economics: Linear and Nonlinear Programming, Fixed-Poi ...2008-12-26 11:10 - bearman - 经济金融数学专区
Control Systems and Mathematical Methods in Economics
8 个回复 - 622 次查看 English | PDF | 2018 | 443 Pages | ISBN : 3319751689 Since the days of Lev Pontryagin and his associates, the discipline of Optimal Control has enjoyed a tremendous upswing – not only in term ...2018-6-29 14:09 - igs816 - 经管书评