User contributions for Drkirkby
A user with 642 edits. Account created on 22 April 2006.
4 April 2024
- 14:3414:34, 4 April 2024 diff hist +19 Welch's t-test Added var.equal = FALSE for R because if var.equal = TRUE then Welch's t-test is not used. I don't know if the default is TRUE or FALSE, but this makes it clearer.
4 February 2024
- 22:2322:23, 4 February 2024 diff hist +361 Talk:R (programming language) →Removing the description was "as a programming language to teach introductory statistics at the University of Auckland.": Reply Tag: Reply
3 February 2024
- 15:4315:43, 3 February 2024 diff hist +306 Wikipedia talk:WikiProject Statistics →Should R not be listed as of top importance?: new section Tag: New topic
- 15:3415:34, 3 February 2024 diff hist +321 Talk:Minitab →Trialware license seems wrong: new section Tag: New topic
- 15:2115:21, 3 February 2024 diff hist +33 R (programming language) →History
- 15:1515:15, 3 February 2024 diff hist +1,164 Talk:R (programming language) →Removing the description was "as a programming language to teach introductory statistics at the University of Auckland.": new section Tag: New topic
19 April 2023
- 04:0104:01, 19 April 2023 diff hist +283 Talk:Extended Validation Certificate →Exclusion of Small Businesses: Reply Tags: Mobile edit Mobile web edit Advanced mobile edit Reply
- 03:5003:50, 19 April 2023 diff hist +1 Sci-Hub Added a full stop Tags: Mobile edit Mobile web edit Advanced mobile edit
- 03:4903:49, 19 April 2023 diff hist +26 Sci-Hub Removed the statement that it provides access to millions of books. That statement suggestes the site is robbing authors from royalties from books, which is not the case. The site only provides access to journals. Tags: Mobile edit Mobile web edit Advanced mobile edit
13 April 2022
- 14:2014:20, 13 April 2022 diff hist +794 m MediaWiki talk:Spam-blacklist →Discussion
- 14:0714:07, 13 April 2022 diff hist −41 Sci-Hub The URL is bogus, and points to a site which is not the real sci-hub. People should not be allowed to insert bogus links. It appears that valid links are blacklisted, and bogus ones allowed. Tag: Reverted
- 13:3813:38, 13 April 2022 diff hist +190 Talk:Kleptomania →Inappropriate image: Reply Tag: Reply
15 May 2021
- 13:5213:52, 15 May 2021 diff hist +136 Sci-Hub Add URL. Tag: Reverted
- 11:1111:11, 15 May 2021 diff hist +457 Talk:WolframAlpha →UPE
27 July 2020
- 07:5907:59, 27 July 2020 diff hist +149 Talk:Scale model →scale models in engineering
- 07:3907:39, 27 July 2020
diff hist +295
Scale model
Upon reading this again, it is not factually incorrect.
Undo
- 07:0807:08, 27 July 2020 diff hist −295 Scale model Remove a factually incorrect statement which someone else states needs a citation
28 December 2019
- 11:0311:03, 28 December 2019 diff hist +956 Talk:Dipole antenna →The term "directive gain" is repeatidly used, when directivity should be used instead: new section Tags: Mobile edit Mobile web edit Advanced mobile edit
- 10:4910:49, 28 December 2019 diff hist +183 Talk:Dipole antenna No edit summary Tags: Mobile edit Mobile web edit
- 10:4010:40, 28 December 2019 diff hist +278 Dipole antenna →Half-wave dipole Tags: Mobile edit Mobile web edit
26 December 2019
- 13:5213:52, 26 December 2019 diff hist +632 Talk:Dipole antenna →Gain calculation of a half-wave dipole is wrong: new section
31 August 2019
- 00:3100:31, 31 August 2019 diff hist −73 David Delpy Removed the error David has a PhD, as he does not, as surprising as that may seem. He does have a DSc. I know him well - he was my PhD supervisor. He had a number of successful PhD students before he got the DSc or was a professor. Tags: Visual edit Mobile edit Mobile web edit
- 00:2200:22, 31 August 2019 diff hist +587 Talk:David Delpy →Prof David does not have a PhD: new section Tags: Mobile edit Mobile web edit
28 October 2018
- 15:3215:32, 28 October 2018 diff hist +1,130 Talk:Coaxial cable →Use if the term "dielectric constant". Change to "relative permittivity"?: new section
28 September 2018
- 14:4414:44, 28 September 2018 diff hist +38 Elizabeth Hillman Added she was a British engineer. I think she was born and/or education in Hitchin, but are not sure.
- 14:1714:17, 28 September 2018 diff hist +11 David Delpy Correct URL to EPSERC site, as the original had an invalid SSL certificate.
13 August 2018
- 09:3909:39, 13 August 2018 diff hist +87 Talk:Zenithal hourly rate No edit summary
- 09:3709:37, 13 August 2018 diff hist +279 Zenithal hourly rate Mark as dubious a section someone else had commented on a few years ago.
- 09:3109:31, 13 August 2018 diff hist +83 Talk:Zenithal hourly rate →sin(hR) dependence
- 09:3009:30, 13 August 2018 diff hist +695 Talk:Zenithal hourly rate Confirming the equation showing sin(rH) in the denominator is flawed.
18 July 2018
- 16:2616:26, 18 July 2018 diff hist −49 Wikipedia:Lists of common misspellings/T Often used in the scientific literature as thru
21 June 2018
- 01:0901:09, 21 June 2018 diff hist +542 Talk:Data Universal Numbering System →Of what use is DUNS other than providing a credit score for a business?
13 May 2018
- 19:3419:34, 13 May 2018 diff hist +520 Criticism of eBay →Feedback system
24 February 2018
- 23:2823:28, 24 February 2018 diff hist +552 Talk:National Rifle Association →Excessive list of past presidents and other staff
- 23:1823:18, 24 February 2018
diff hist +3,193
National Rifle Association
Undid revision 827477465 by Drkirkby (talk)
Undo
- 23:1623:16, 24 February 2018 diff hist −3,193 National Rifle Association →List of past and present leaders
21 May 2017
- 19:3819:38, 21 May 2017 diff hist −5,465 Scattering parameters Remove all the unnecessary things about the VNA. I asked in talk page, and nobody commented. I see no need to copy large parts of another Wikipedia entry.
10 May 2017
- 21:4621:46, 10 May 2017 diff hist +838 Talk:Scattering parameters →Why so much detail about a Vector network analyzer?: new section
27 March 2017
- 01:3201:32, 27 March 2017 diff hist +1,538 Talk:Ring (mathematics) →Would it be possible to make the introduction more readable, like the Mathworld one?: new section
14 March 2017
- 19:5819:58, 14 March 2017 diff hist +1,245 Talk:Perpetual motion →"Interesting" advert about 6 pages long published about 30 years ago in New Scientist: new section
17 February 2017
- 22:0622:06, 17 February 2017 diff hist +312 Angular frequency Mention that the formula given for resonate frequency is only valid for series tuned circuit, as the original text could leave someone believing it was true for parallel LC circuits too.
26 July 2015
- 19:0019:00, 26 July 2015 diff hist −34 Doublet antenna Remove the material about a resonate feeder, since some one else picked up it is not explained. I believe it is also wrong. Essentially the feeder acts as an impedance transformer
9 January 2015
- 22:3822:38, 9 January 2015 diff hist −15 Touchstone file No edit summary
1 January 2015
- 20:1620:16, 1 January 2015 diff hist +622 Talk:Counterfeit →Is something counterfeit if original parts, in new case with cloned labels?: new section
8 October 2014
- 14:4414:44, 8 October 2014 diff hist +342 Free-space path loss Give a reference to this.
13 January 2014
- 00:0100:01, 13 January 2014 diff hist −90 Cantenna To state a gain figure in just dB is useless - a reference (usually dBi or dBd) is needed. But no reference is given. A dubious statement
12 January 2014
- 10:2310:23, 12 January 2014 diff hist +1,485 Talk:Cantenna →Needs some sort of design equations.: new section
- 10:0910:09, 12 January 2014 diff hist +1,438 Talk:N connector →Slots on female N contact.: new section
- 09:5309:53, 12 January 2014 diff hist +516 Talk:N connector →Confusing picture of female N: new section
23 October 2013
- 22:2122:21, 23 October 2013 diff hist +1,127 Talk:United Kingdom Accreditation Service →Why should I pay extra for an accredited calibration?: new section
