Search found 409 matches

by David Gibson
Mon 03 Dec 2018 11:23
Forum: Cave Radio & Electronics
Topic: CREG Journal 104 now published
Replies: 0
Views: 421

CREG Journal 104 now published

CREG Journal 104 - The December 2018 issue - is now online at http://bcra.org.uk/cregj The printed version is still in press and will, hopefully, be mailed by 8 December. If your online subscription has expired, you will find out when you try to log in. If your paper CREG subscription has now expire...
by David Gibson
Wed 10 Oct 2018 12:45
Forum: British Cave Research Association
Topic: BCRA Review magazine
Replies: 0
Views: 453

BCRA Review magazine

The new issue of "BCRA Review" is now available online for free downloading. Go to http://bcra.org.uk/news Printed copies will be available to purchase at the Science Symposium this weekend, for £5. This 60-page full-colour A4 magazine covers activities in 2017, and includes various features and art...
by David Gibson
Fri 21 Sep 2018 09:03
Forum: British Cave Research Association
Topic: News; September 2018
Replies: 0
Views: 514

News; September 2018

Annual General Meeting Notice is hereby given that the 2018 Annual General Meeting of the British Cave Research Association will be held on Saturday 13 Oct 2018 at 12:00 during the BCRA Cave Science Symposium at the University of Bristol. For further info about the Symposium see http://bcra.org.uk/...
by David Gibson
Sat 01 Sep 2018 10:20
Forum: BCA Web Services
Topic: 500 Internal Server Error
Replies: 0
Views: 617

500 Internal Server Error

If anyone's web site has suddenly started reporting "500 internal server error" this may be due to an upgrade at Apache. Check your error log, via control Panel / Metrics, and you may likely find that your server is reporting an error in your .htaccess file. A strong candidate for this error is that...
by David Gibson
Sat 25 Aug 2018 11:43
Forum: British Cave Research Association
Topic: News; August 2018
Replies: 0
Views: 646

News; August 2018

Cave & Karst Science 45(2) now published CKS 45(2) was mailed last week. The online version should be available by Monday 27 August. Note to BCRA Member Clubs Some of you have previously requested that your periodicals are mailed to a different address (e.g. your librarian or club hut). If this is ...
by David Gibson
Fri 24 Aug 2018 20:29
Forum: Cave Radio & Electronics
Topic: underground communication using seismic waves
Replies: 5
Views: 1004

Re: underground communication using seismic waves

sounds interesting, Jim. A couple of questions... 1. Do you have a feel for the attenuation in the system? For a magnetic system, we would relate the transmitter's magnetic moment to the received magnetic field strength. What is the equivalent in seismic terms? Would it be to relate the pressure lev...
by David Gibson
Sat 11 Aug 2018 22:48
Forum: BCA Web Services
Topic: FTP problems on Britiac2 and Britiac3
Replies: 0
Views: 525

FTP problems on Britiac2 and Britiac3

If anyone is having problems using FTP on either of BCA's servers, from about 2100 on Thurs 09 Sept - try switching your FTP client from passive to active mode. That solved it for me and one other person. I dont know what's happened - I assume that as it happened on both servers, it is something Mem...
by David Gibson
Thu 02 Aug 2018 09:58
Forum: Cave Radio & Electronics
Topic: Studies on the Ellora & Ajanta Caves (India)
Replies: 1
Views: 576

Re: Studies on the Ellora & Ajanta Caves (India)

A wired camera might be better. You pay out the cable as the small child explores, and the small child can follow the cable to find its way home. Otherwise, dont you have small child lost in maze that no adult can enter?
by David Gibson
Sun 08 Jul 2018 14:33
Forum: BCA Web Services
Topic: PHP DIO module
Replies: 5
Views: 1369

Re: PHP DIO module

Asking Google, (see here ) it seems that the error is because my files are not at C:\php, because XAMPP has put them somewhere else. Executing pear config-set doc_dir C:\xampp\php\pear pear config-set cfg_dir C:\xampp\php\pear pear config-set data_dir C:\xampp\php\pear pear config-set test_dir C:\xa...
by David Gibson
Sun 08 Jul 2018 13:00
Forum: BCA Web Services
Topic: PHP DIO module
Replies: 5
Views: 1369

Re: PHP DIO module

Have you checked the process has permission to create that directory? Well, I wondered about that, but this is Windows we're talking about, so can permissions be an issue? But I will try what you suggested. Although... perhaps permissions can be an issue after all? In an unrelated exercise, Im tryi...
by David Gibson
Sun 08 Jul 2018 12:54
Forum: BCA Web Services
Topic: PHP Imagick module
Replies: 3
Views: 705

Re: PHP Imagick module

David Cooke wrote:I'll have to install that for you.

Have you considered GD Graphics which is already install?
That thought occurred to me in the middle of the night. I tested it just now and ... yes... it works. So no need for Imagick.
by David Gibson
Sat 07 Jul 2018 11:43
Forum: BCA Web Services
Topic: PHP DIO module
Replies: 5
Views: 1369

PHP DIO module

I want to use PHP's Direct IO functions (http://php.net/manual/en/book.dio.php ) on my local PC. So I have downloaded it from PECL (https://pecl.php.net/package/dio/0.1.0) but Im having problems installing it. I wondered if anyone has any experience of installing PEAR packages under XAMPP on Windows...
by David Gibson
Sat 07 Jul 2018 10:47
Forum: BCA Web Services
Topic: PHP Imagick module
Replies: 3
Views: 705

PHP Imagick module

I want to process a load of image files on britiac3 to produce thumbnails. Imagick seems a good way to do this, unless anyone has any better suggestions. But trying this from within PHP results in Fatal error: Class 'Imagick' not found . So... is there anything I can do to install this module, or is...
by David Gibson
Tue 03 Jul 2018 10:41
Forum: British Cave Research Association
Topic: News; July 2018
Replies: 0
Views: 979

News; July 2018

In this newsletter ... British Caving Library Updates BCRA Publicity Officer AGM Notice 29th Annual BCRA Cave Science Symposium BCRA Stock of Back-Issues CREG Journal 102 - now online Hidden Earth 2018 Hidden Earth Cave Science Photo Competition News can also be found on the forum at http://bcra.or...
by David Gibson
Tue 03 Jul 2018 09:35
Forum: British Cave Research Association
Topic: 29th Cave Science Symposium, 13 October 2018, Bristol
Replies: 4
Views: 1405

29th Cave Science Symposium, 13 October 2018, Bristol

British Cave Research Association; 29th Cave Science Symposium : Saturday 13 October, 2018 School of Geographical Sciences, University of Bristol FIRST CIRCULAR & CALL FOR ABSTRACTS, May, 2018 The British Cave Research Association is pleased to announce details of the 29th Annual Cave Science Sympo...