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On the drop impact performance of IPDTM devices with different process technolog
1 个回复 - 458 次查看【作者(必填)】【文题(必填)】On the drop impact performance of IPDTM devices with different process technologies 【年份(必填)】２０１2 【全文链接或数据库名称(选填)】https://www.researchgate.net ...2020-7-18 23:06 - victorbian - 求助成功区

Optimal Shock Pulse in Drop Test Simulation of Standardized Board for Uniform Sh
1 个回复 - 600 次查看【作者(必填)】【文题(必填)】Optimal Shock Pulse in Drop Test Simulation of Standardized Board for Uniform Shock Response 【年份(必填)】2016 【全文链接或数据库名称(选填)】https://www.researchga ...2020-7-13 23:42 - victorbian - 求助成功区

A New Drop Test Vehicle for a Uniform Shock Response
2 个回复 - 392 次查看【作者(必填)】【文题(必填)】A New Drop Test Vehicle for a Uniform Shock Response【年份(必填)】2010 【全文链接或数据库名称(选填)】https://www.researchgate.net/publication/224147793_A_New_Drop_Te ...2020-7-13 23:51 - victorbian - 求助成功区

Simulation and Verification of the Drop Test of 3C Products
3 个回复 - 508 次查看【作者(必填)】Hsing-Ling Wang 【文题(必填)】Simulation and Verification of the Drop Test of 3C Products 【年份(必填)】【全文链接或数据库名称(选填)】https://www.researchgate.net/publication/267 ...2020-2-2 01:04 - victorbian - 求助成功区

Drop-impact simulation and experimental verification for spindle fixation of vid
1 个回复 - 390 次查看【作者(必填)】Y.Y. Wang 【文题(必填)】Drop-impact simulation and experimental verification for spindle fixation of video and audio module 【年份(必填)】2003 【全文链接或数据库名称(选填)】https: ...2019-7-30 05:01 - victorbian - 求助成功区

Design of shock table tests to mimic real-life drop conditions for portable elec
1 个回复 - 332 次查看【作者(必填)】C.Y. Zhou, T. X. Yu, Ricky S.W. Lee 【文题(必填)】Design of shock table tests to mimic real-life drop conditions for portable electronic device 【年份(必填)】2007 【全文链接或数据 ...2019-3-1 11:37 - victorbian - 求助成功区

Experimental verification of drop/impact simulation for a cellular phone
1 个回复 - 506 次查看【作者(必填)】J. G. KimY. K. Park 【文题(必填)】Experimental verification of drop/impact simulation for a cellular phone 【年份(必填)】2004 【全文链接或数据库名称(选填)】https://www.researchgat ...2018-10-6 18:03 - victorbian - 求助成功区

On drop property and nearly uniformly smooth banach spaces
3 个回复 - 859 次查看【作者(必填)】 [*]Józef Banaś [*]【文题(必填)】 On drop property and nearly uniformly smooth banach spaces 【年份(必填)】1990 【全文链接或数据库名称(选填)】http://www.sciencedirect.com/sc ...2013-4-10 23:20 - ozj9325 - 求助成功区

为什么stata数值型数据drop if不管用呢？
9 个回复 - 6799 次查看小白一只，在将stata面板数据由字符型转换成数值型后，使用drop if但并没有用，求大神指点如何去掉0值！2017-1-9 20:39 - 孤独牛腩面 - Stata专版

Exploring different regimes in finite-size scaling of the droplet condensation-e
2 个回复 - 555 次查看【作者(必填)】 Johannes Zierenberg and Wolfhard Janke【文题(必填)】Exploring different regimes in finite-size scaling of the droplet condensation-evaporation transition【年份(必填)】 Phys. Rev. E ...2015-8-2 13:13 - qijiongli - 求助成功区

drop if var==xx
10 个回复 - 17913 次查看其中var可以是字符型的吗？谢谢！2013-3-18 09:48 - shevaze - Stata专版

【学习笔记】191105-US considers dropping some tariffs on China
3 个回复 - 338 次查看 191105-US considers dropping some tariffs on China2019-11-5 23:39 - fangchouzhu - Forum

cap safedrop u generate u = uniform() sort u 求解
1 个回复 - 1724 次查看在看一个do file 其中选择是PSM模型 LOGIT模型 use data, clear cap safedrop u generate u = uniform() sort u psmatch2 act sport age2 smoke2 drink disable disease marriage gender pension, out(mental ...2018-1-14 15:48 - duoxu4394 - Stata专版

【商业故事】Baidu’s shift towards AI starts to bear fruit as profits drop
7 个回复 - 1073 次查看 source from：ft https://www.ft.com/content/c8d7a9fe-2bc0-11e7-bc4b-5528796fe35c Baidu’s shift towards AI starts to bear fruit as profits drop Jennifer Li to step down as chief financial office ...2017-4-29 19:10 - william9225 - 真实世界经济学(含财经时事)

drop if &语句每次得出不同的结果
2 个回复 - 5014 次查看大家好，我在使用CSMAR上市公司并购数据，想根据两个变量drop掉一些observations。这两个变量分别是InstitutionID（机构名称）和eid（eid=_n，根据交易事件ID生成的sub id，因为一个并购事件包含不同交易方），现在我 ...2015-7-2 12:25 - mark8865 - Stata专版

Should you drop interaction terms if they’re not significant?
1 个回复 - 2159 次查看 In an ANOVA, adding interaction terms still leaves the main effects as main effects. That is, as long as the data are balanced, the main effects and the interactions are independent. The main effect ...2014-4-15 00:26 - ReneeBK - SPSS论坛

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