结果:找到“SPEC”相关内容1000个,排序为按回复时间降序,搜索更多相关帖子请点击“高级
国际电信联盟ITU_ICT:全球电信统计数据2005-2020(固话、手机、宽带、网民等)
3 个回复 - 2282 次查看 国际电信联盟ITU_ICT:全球电信统计数据2005-2020(固话、手机、宽带、网民等) 数据年度:2005-2020 数据来源:国际典型联盟ITU_ICT 数据分三个页签: By dvpmnt status and spec. reg.: 第二个 ...2021-10-6 11:47 - yusb - 现金交易版
API20E,API20F,API SPEC 20E,API SPEC 20F,学习交流与分享
0 个回复 - 2967 次查看 API20E,API20F,API SPEC 20E,API SPEC 20FAPI SPEC 20E《石油和天然气工业用合金与碳钢螺栓》、API SPEC 20F《石油和天然气工业用耐腐蚀螺栓》 此标准详述了油气工业用螺栓产品的技术、质量、制造和文件合格要求 ...2019-10-17 11:40 - Mujahida - 现金交易版
计量型数据MSA课件
0 个回复 - 758 次查看 使用描述性统计, 计算Delta 的标准差 Using Descriptive Statistics, calculate the standard deviation of Delta 这个标准差被称为测量标准误差 This standard deviation is called the Standard Error for Mea ...2018-6-3 11:08 - daka123 - 现金交易版
New Perspectives Microsoft Office 365 & Access 2016 Comprehensive Edition
8 个回复 - 2500 次查看 作者 Shellman and Vodnik 出版社 Cengage Learning2019-2-18 12:05 - emmachengdu - 金融学(理论版)
找书贴,Computer Systems: A Programmer's Perspective 3rd
19 个回复 - 2484 次查看 原版的哦,要价不要太高,小弟币不多2018-9-8 10:17 - say456dfg - 文献求助专区
Principals of marketing:An Asian perspective, Fourth edition
2 个回复 - 1412 次查看 市场营销入门课本 英文 作者:Philip Kotler, Gary Armstrong, Swee Hoon Ang, Chin Tiong Tan, Oliver Hon-Ming Yau, Siew Meng Leong2019-6-13 21:55 - 铃木千秋 - 市场营销
Principles of Marketing, An Asian Perspective, 4th Edition
31 个回复 - 8747 次查看 English | 2017 | ISBN: 1292089660 | 774 Pages | PDF | 41 MB For Principles of Marketing courses that require a comprehensive text. Help students learn how to create value through customer connectio ...2017-10-14 17:35 - igs816 - 市场营销
Large-scale model selection in misspecified generalized linear models
2 个回复 - 530 次查看 【作者(必填)】 23 【文题(必填)】 Large-scale model selection in misspecified generalized linear models【年份(必填)】 23 【全文链接或数据库名称(选填)】https://academic.oup.com/biomet/advance-artic ...2021-9-13 11:18 - internet.hzx - 求助成功区
新书公告:Thirty Years with Stata: A Retrospective
3 个回复 - 1189 次查看 Stata 三十年回顾 Thirty Years with Stata: A Retrospective By:Enrique Pinzon (editor) Publisher: Stata Press Copyright: 2015 ISBN-13: 978-1-59718-172-3 Pages: 147; http://www.stata.com/bookst ...2017-8-10 19:11 - hiderm - Stata专版
Advertising and Promotion:An Integrated Marketing Communications Perspective 11E
2 个回复 - 1648 次查看 Advertising and Promotion: An Integrated Marketing Communications Perspective11th Edition By George Belch and Michael Belch ISBN10: 1259548147 ISBN13: 9781259548147 Copyright: 2018 - Has ...2020-9-4 12:47 - 白馒头 - 教师之家与经管教育
Computer Systems A Programmer’s Perspective 3rd global edition
2 个回复 - 3667 次查看 For courses in Computer Science and Programming Computer systems: A Programmer's Perspective explains the underlying elements common among all computer systems and how they affect general applicati ...2018-9-12 07:08 - nivastuli - 博弈论
The Making of National Money. Territorial Currencies in Historical Perspective
2 个回复 - 653 次查看 【作者(必填)】 Eric Helleiner 【文题(必填)】 The Making of National Money. Territorial Currencies in Historical Perspective 【年份(必填)】 Cornell University Press, 2003. 【全文链接或数据库名称 ...2018-3-17 00:30 - hhyc - 求助成功区
分组回归后,进行比较或者输出时出现too many base levels specified的处理
3 个回复 - 3090 次查看 分组回归可以呈现结果,但是在执行esttab命令想输出分组结果时,出现错误too many base levels specified 在论坛搜索了集中解决的方法,最后尝试了@xingxf的方法,终于解决啦。 贴一下大神之前的回答。可以去原问 ...2017-8-21 17:00 - 新晴sunshine - Stata专版
stata用psmatch2命令执行失败,出现 specify a varlist or propensity score的反馈
15 个回复 - 9236 次查看 代码: psmatch2 treated2016 $xlist, outcome(lndeposit) logit kernel ties common odds psmatch2代码应该是没有问题的,之前也一直在执行,刚刚在执行其它命令之后,回过头来再执行psmatch2的命令就出现这个 ...2021-8-30 23:30 - 小二搞科研 - Stata专版
Compustat data Item #17: Special Item 的定义?
1 个回复 - 2690 次查看 请问Compustat数据库中 Item #17,即Special Item (SPI) 具体包括哪些内容?该数据的定义是什么?感谢大佬们!!!2022-3-11 11:45 - msh420 - 数据交流中心
【急】Stata做嵌套Logit模型alternative-specific报错
7 个回复 - 2806 次查看 Stata做嵌套Logit模型,使用的是nlogit命令,数据如图 其中occupation是职业,alter是选项的题号;item1到item13是在每个题中,分别有哪些选项;Response是受访者在该题中选择了哪个选项,每个题中有4个选项 Sta ...2019-5-26 20:57 - xiaojiejier - Stata专版
请教一下大家,用Stata合并两个数据时出现invalid file specification
3 个回复 - 2819 次查看 和下边这个 merge 1:1 Stkcd year时出现 use"C:\Users\11617\Desktop\CSR最新数据\CSR\09-19RKS面板数据.dta" . merge 1:1 Stkcd year using invalid file specification r(198); end of do-file 想问一 ...2022-2-26 09:56 - KaTe51129 - Stata专版
timevar (year) may not contain missing values when option full is specified
10 个回复 - 5676 次查看 timevar (year) may not contain missing values when option full is specified 显示这个是什么意思?2018-9-10 21:39 - 政治珂代表 - Stata专版
用iv-tobit模型分析显示must specify censoring point是什么意思?
3 个回复 - 1386 次查看 探究是否拥有养老保险对家庭风险金融财产占总金融资产比重的影响 被解释变量是Propotion比重,解释变量是是否拥有养老保险Pension,工具变量是average_Pension_of_peers,控制变量是income,education,age,marriage, ...2022-5-22 22:34 - twilight丷 - Stata专版
Manager Today Special Issue 經理人. 主題特刊 - 一月 21, 2022
5 个回复 - 2811 次查看 Manager Today Special Issue 經理人. 主題特刊 - 一月 21, 2022 中文 | 84 pages | True PDF | 26.1 MB2022-2-27 08:20 - rip - 商学院
门槛回归出现not enough observations at the specified trim level报错
5 个回复 - 3267 次查看 stata做门槛自回归的时候报错not enough observations at the specified trim level,命令是threshold y, regionvars(l1y l2y) threshvar(w) 其中l1y l2y是y的滞后项,w是门限变量,求问这个报错是什么意思呢只有17 ...2019-2-25 10:03 - yuwugong3 - Stata专版
财务会计学(Financial Accounting, A Global Perspective &e):在清华的学习资料
3 个回复 - 1186 次查看 会计学,财务会计学(Financial Accounting, A Global Perspective &e):在清华的学习资料 教学教材: Reference:Short, Libby and Libby, "Financial Accounting, A Global Perspective", &e,McGraw-Hill P ...2021-10-29 11:40 - Lamarr-202110 - 现金交易版
stata面板分位数回归报错Error: You must specify a panel identifier
2 个回复 - 1712 次查看 想做2015和2016年的面板分位数,设置了面板,但一直报错 You must specify a panel identifier求大佬赐教2022-1-11 10:22 - 青岛老李123 - Stata专版
资源:Estimation, Inference and Specification Analysis
2 个回复 - 2426 次查看 White(1994)细致推导了“三明治”矩阵,是自己写模型计算极大似然估计参数标准误的必备的理论基础。整理不易,在此分享给大家。2019-11-7 15:55 - 天生遥控 - 计量经济学与统计软件
基于S. Theodoridis Machine Learning A Bayesian and Optimization Perspective MAT
1 个回复 - 1331 次查看 基于S. Theodoridis Machine Learning A Bayesian and Optimization Perspective MATLAB Codes 基于S. Theodoridis Machine Learning A Bayesian and Optimization Perspective MATLAB Codes 基于S. Theod ...2022-3-7 14:43 - lotus_sss - 现金交易版
初期样品检验报告要怎样做?ISIR,Initial inspection report
1 个回复 - 1483 次查看 初期样品检验报告要怎样做?ISIR,Initial inspection report 初期样品检验报告要怎样做?ISIR,Initial inspection report 初期样品检验报告要怎样做?ISIR,Initial inspection report 初期样品检验报告要怎样 ...2020-7-5 17:59 - lotus_sss - 现金交易版
MATLAB高阶统计量的工具箱:Higher-Order Spectral Analysis (HOSA) Toolbox
1 个回复 - 1374 次查看 MATLAB高阶统计量的工具箱:Higher-Order Spectral Analysis (HOSA) Toolbox MATLAB高阶统计量的工具箱:Higher-Order Spectral Analysis (HOSA) Toolbox MATLAB高阶统计量的工具箱:Higher-Order Spectral An ...2020-2-15 20:03 - Mujahida - 现金交易版
must specify panelvar; use xtset的可能解决方法
2 个回复 - 17397 次查看 有可能是个体与时间变量输入有误,先要xtset 个体与时间变量。比如个体是id,时间是year 则输入xtset id year 然后运行 如果之后依然出错 则需要继续判断 论坛内帖子https://bbs.pinggu.org/thread-249258-1 ...2022-4-13 14:36 - Corvo科尔沃 - 爱问频道
求pdf The Sense of Structure: Writing from the Reader's Perspective
11 个回复 - 2765 次查看 【作者(必填)】 George Gopen 【文题(必填)】 The Sense of Structure: Writing from the Reader's Perspective 【年份(必填)】 2004 需要pdf版本!!!!!!!!! ...2020-7-5 15:16 - 墓有乾坤 - 文献求助专区
Game-theoretic Interference Coordination Approaches for Dynamic Spectrum Access
5 个回复 - 734 次查看 English | 2016 | ISBN: 9811000220 | 93 Pages | PDF | 5.3 MB Written by experts in the field, this book is based on recent research findings in dynamic spectrum access for cognitive radio networks ...2017-9-20 10:52 - igs816 - 博弈论
Electronic Commerce 2018: A Managerial and Social Networks Perspective 9th
10 个回复 - 1461 次查看 English | PDF | 2017 (2018 Edition) | 653 Pages | ISBN : 3319587145 | 15 MB This new Edition of Electronic Commerce is a complete update of the leading graduate level/advanced undergraduate level ...2017-10-20 15:50 - igs816 - 经管书评
Designing Experiments and Analyzing Data: A Model Comparison Perspective 3rd
30 个回复 - 1602 次查看 2017 | English | ISBN-10: 0805822232 | PDF | 1071 Page This classic text on multiple regression is noted for its nonmathematical, applied, and data-analytic approach. Readers profit from its v ...2018-5-11 11:08 - igs816 - 经管书评
Writing Great Specifications: Using Specification By Example and Gherkin
5 个回复 - 691 次查看 Writing Great Specifications: Using Specification By Example and Gherkin By 作者: Kamil Nicieja ISBN-10 书号: 1617294101 ISBN-13 书号: 9781617294105 Edition 版本: 1 出版日期: 2017-11-04 pages 页 ...2018-12-14 17:38 - 13950050756 - 经管书评
Reliability Aspect of Cloud Computing Environment
3 个回复 - 283 次查看 Reliability Aspect of Cloud Computing Environment By 作者: Vikas Kumar – R. Vidhyalakshmi ISBN-10 书号: 9811330220 ISBN-13 书号: 9789811330223 Edition 版本: 1st ed. 2018 出版日期: 2018-11-02 pa ...2018-12-14 16:43 - 13950050756 - 经管书评
A Brief Introduction to Spectral Graph Theory
15 个回复 - 1088 次查看 2018 | ISBN-10: 3037191880 | 168 pages | PDF Spectral graph theory starts by associating matrices to ...2018-8-2 11:58 - igs816 - 经管书评
求助:R语言提示“Invalid grouping factor specification”错误
2 个回复 - 1481 次查看 求助各位! R语言新手,想线性混合模型分析,数据:center和disease是分类变量,FP和Q5是连续变量。模型:Q5是应变量,disease、FP和两者的交互效应设为固定效应,center设为随机效应,包括截距和与FP的交互效应。 ...2021-11-30 22:10 - hnyear - R语言论坛
Accounting and Finance for non-specialist
9 个回复 - 2011 次查看 Accounting and Finance for non-specialist,会计学本科教材 高清英文原版PDF2021-1-20 13:24 - LuneKree - 管理科学
Spectral Methods in Infinite-Dimensional Analysis (1995)
3 个回复 - 894 次查看 书籍Spectral Methods in Infinite-Dimensional Analysis (1995) 作者:Y. M. Berezansky, Y. G. Kondratiev 出版时间:1995年 出版社:Springer 内容简介:The Russian edition of this book appeared ...2021-9-24 19:28 - douer2016007 - 管理科学
Unit-Specific Model 与 Population Average Model 的含义
4 个回复 - 5500 次查看 麻烦请教一下各位高人: 用HLM做二层逻辑回归的零模型,给出了两种模型结果:一个是Unit-Specific Model ;另一个是Population Average Model 。这两个名词中文怎么翻译?有什么不同?谢谢!2017-12-18 21:50 - lazybones13 - HLM专版
Modern Financial Markets & Institutions: a practical perspective
9 个回复 - 1136 次查看 2012 | ISBN-10: 0000 | 792 pages | PDF | 21 MB Modern Financial Markets and Institutions provides a comprehensive and authoritative introduction to the workings of modern fina ...2017-11-17 17:25 - igs816 - 经管书评
Range: Why Generalists Triumph in a Specialized World
3 个回复 - 611 次查看 Plenty of experts argue that anyone who wants to develop a skill, play an instrument, or lead their field should start early, focus intensely, and rack up as many hours of deliberate practice as possi ...2019-5-29 11:36 - SheltieMyHero - 经管书评
新书推荐宏观经济视角的公共经济学 Public Economics The Macroeconomic Perspective
10 个回复 - 2554 次查看 今天给大家推荐的这本新书是Heer写的“Public Economics The Macroeconomic Perspective”,传统的财政学更加强调公共政策的资源配置和收入分配,而忽略了宏观经济稳定和发展,至少从绝大多数的经验研究来看。当然, ...2019-5-29 10:36 - 超然随风 - 宏观经济学
Experimentations in emerging innovation ecosystems: specificities and roles.
2 个回复 - 791 次查看 【作者(必填)】Sihem Ben Mahmoud-Jouini; Florence Charue-Duboc 【文题(必填)】 Experimentations in emerging innovation ecosystems: specificities and roles. 【年份(必填)】2017 【全文链接或数据库 ...2017-12-19 15:08 - benben929 - 求助成功区
When speculators meet suppliers Positive versus negative feedback in experimenta
2 个回复 - 310 次查看 housing market 的相关论文2020-1-10 17:25 - 沐水123 - 经管书评
Essentials Of Management - a global and Entrepreneurial perspective, 13rd
4 个回复 - 550 次查看 经济科学出版社 英文影印版2018-10-20 00:28 - victorbian - 经管书评
NVMe Spec中文版
6 个回复 - 2892 次查看 NVMe Spec中文版:2020-12-30 18:56 - huzz137 - Linux操作系统
SAS Certified Specialist Prep Guide_ Base Programming Using SAS 9.4
15 个回复 - 4446 次查看 SAS® Certified Specialist Prep Guide_ Base Programming Using SAS® 9.4-SAS Institute (2019)2020-1-9 09:50 - renda_shitou - SAS专版
【2018新书】World in Crisis: Marxist Perspectives on Crash and Crisis
33 个回复 - 5527 次查看 World in Crisis: Marxist Perspectives on Crash and Crisis by Guglielmo Carchedi (Editor), Michael Roberts (Editor) About the Author Gugliemo Carchedi, doctorate (1965) in Economics, University of ...2018-11-15 08:32 - slowry - 金融学(理论版)
【2018新书】Crisis in the European Monetary Union: A Core-Periphery Perspective
25 个回复 - 5082 次查看 Crisis in the European Monetary Union: A Core-Periphery Perspective by Giuseppe Celi (Author), Andrea Ginzburg (Author), Dario Guarascio (Author), Annamaria Simonazzi (Author) About the Author Gi ...2019-2-7 13:14 - slowry - 金融学(理论版)
【2019新书】The 2008 Global Financial Crisis in Retrospect
38 个回复 - 6633 次查看 The 2008 Global Financial Crisis in Retrospect: Causes of the Crisis and National Regulatory Responses by Robert Z. Aliber (Editor), Gylfi Zoega (Editor) About the Author Robert Z. Aliber receive ...2019-6-2 02:05 - slowry - 金融学(理论版)
求pdf电子书 Supply chain management: a logistics perspective, 10e
3 个回复 - 1426 次查看 求pdf版(非扫描版)电子书:书名:[/backcolor]Supply chain management: a logistics perspective, 10e 作者: [/backcolor]John Coyle, John Langley, Robert Novack, and Brian Gibson[/backcolor]2020-7-4 08:20 - Rayoops - 求助成功区
Critical Perspectives on Disaster and Crisis Research
3 个回复 - 869 次查看 【作者(必填)】 【文题(必填)】 Critical Perspectives on Disaster and Crisis Research: Revealing and Responding to Vulnerability 【年份(必填)】 【全文链接或数据库名称(选填)】 https://www.emer ...2021-9-5 16:09 - auirzxp - 求助成功区
Manager Today Special Issue 102021 - 快樂工作指南
3 个回复 - 2257 次查看 2021-10-18 09:13 - rip - 商学院
Harvard Business Review Complex Special Issue 哈佛商業評論特刊 - 十一月
6 个回复 - 1295 次查看 Harvard Business Review Complex 中文 Edition Special Issue 哈佛商業評論特刊 - 十一月 2021 中文 | 100 pages | True PDF | 29.4 MB2021-12-27 09:57 - rip - 商学院
Special Issue 征稿
0 个回复 - 363 次查看 如题,Energies (IF=3.252, SCI)专刊征稿:Special Issue "Industrial Chain, Supply Chain and Value Chain in the Energy Industry: Opportunities and Challenges". https://www.mdpi.com/journal/energies/spec ...2022-6-29 15:18 - PJC13387546442 - 论文版
Theory Building for Hypothesis Specification in Organizational Studies
1 个回复 - 703 次查看 Research andresearch methods are extremely important tools in academic scholarship. At thecore of every research method lies the hypothesis. Theory Building for Hypothesis Specification inOrganization ...2022-6-17 11:04 - Bangladesh-WL - 创新与战略管理
Transportation Planning and Scheduling for the 2014 Special Olympics USA Games
4 个回复 - 863 次查看 【作者(必填)】Johnson A, Zhao Y, Xu X. 【文题(必填)】Transportation Planning and Scheduling for the 2014 Special Olympics USA Games. 【年份(必填)】2016 【全文链接或数据库名称(选填)】http://p ...2017-11-6 22:30 - fufhong - 求助成功区
Why Corporate Science Commercialization Fails Integrating Diverse Perspectives
3 个回复 - 326 次查看 【作者(必填)】 【文题(必填)】Why Corporate Science Commercialization Fails: Integrating Diverse Perspectives 【年份(必填)】 【全文链接或数据库名称(选填)】https://journals.aom.org/doi/full/10. ...2022-6-21 18:02 - 日新少年 - 求助成功区
IT Capability and Digital Transformation:A Firm Performance Perspective
2 个回复 - 1684 次查看 【作者(必填)】JK Nwankpa[/backcolor],Y Roumani[/backcolor] 【文题(必填)】IT Capability and Digital Transformation:A Firm Performance Perspective 【年份(必填)】2016 【全文链接或数据库名称(选 ...2022-3-4 21:27 - bbsflyingsnow - 求助成功区
【好书推荐】Machine Learning A Bayesian and Optimization Perspective 2nd
25 个回复 - 8811 次查看 [*]Publisher: Academic Press; 2 edition (May 15, 2020) [*]Language: English [*]ISBN:9780128188033 New to this edition: [*]Complete re-write of the chapter on Neural Networks and Deep Lear ...2020-4-5 17:52 - HaloGCC - Forum
Neural networks—Their applications and perspectives in intelligent machining
2 个回复 - 455 次查看 【作者(必填)】 D.Barschdorff2[/backcolor]L.Monostori13[/backcolor] 【文题(必填)】Neural networks—Their applications and perspectives in intelligent machining 【年份(必填)】1991 【全文链接或数据 ...2022-5-31 23:36 - GLUT123 - 求助成功区
Unified M-estimation of matrix exponential spatial dynamic panel specification
1 个回复 - 489 次查看 【作者(必填)】 2323 【文题(必填)】 Unified M-estimation of matrix exponential spatial dynamic panel specification 【年份(必填)】 2323 【全文链接或数据库名称(选填)】https://www.tandfonline.com/do ...2022-5-29 10:28 - internet.hzx - 求助成功区
Routines revisited: Exploring the capabilities and practice perspectives
4 个回复 - 686 次查看 【作者(必填)】 Anne Parmigiani; Jennifer Howard-Grenville 【文题(必填)】 Routines revisited: Exploring the capabilities and practice perspectives 【年份(必填)】 2011 【全文链接或数据库名称(选 ...2022-5-28 05:53 - younaqiao - 求助成功区
关于Journal of portfolio management special issue
2 个回复 - 1012 次查看 小硕一枚,最近把写的一篇文章翻译成英文投给JPM,编辑建议转投他们的一个special issue,请问有没有了解这方面的朋友?审稿快吗,审稿难度怎么样2022-5-26 09:43 - qkz627518 - 学术道德监督
Research progress, challenges and prospects of fault diagnosis on battery system
4 个回复 - 442 次查看 【作者(必填)】 【文题(必填)】 Research progress, challenges and prospects of fault diagnosis on battery system of electric vehicles 【年份(必填)】 【全文链接或数据库名称(选填)】https://www.sci ...2022-5-24 22:18 - ticket1988 - 求助成功区
Partner-specific adaptations, performance, satisfaction, and loyalty in third-pa
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