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Koha Community Newsletter: March 2025
by Michael Kuhn 27 Mar '25

27 Mar '25

The Koha Community Newsletter for March 2025 is here: https://koha-community.org/koha-community-newsletter-march-2025/ Many thanks to everyone who submitted articles and news to this newsletter! Please feel free to e-mail me (mik(a)adminkuhn.ch) with any corrections or suggestions. Michael Kuhn Editor, Koha Community Newsletter

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koha-US April 2025 Events & Meetings
by Kristi Krueger 26 Mar '25

26 Mar '25

Hello! koha-US online meetings and events are free and open to all. See our calendar for a full list: http://koha-us.org/calendar/. For Google Calendar users, add our events calendar to your list for easy access to meeting times and links: https://calendar.google.com/calendar/u/1?cid=a29oYS11cy5vcmdfZG1xb2pkczE5Zn… *Meetings* General Meeting - Wednesday, April 02 @ 8:30a PT / 11:30a ET / 15:30 UTC Board Meeting - Wednesday, April 09 @ 8:30a PT / 11:30a ET / 15:30 UTC *Special Interest Groups* Cataloging - Thursday, April 03 @ 8:00a PT / 11:00a ET / 15:00 UTC System Administration - Tuesday, April 08 @ 8:00a PT / 11:00a ET / 15:00 UTC Baby Devs - Thursday, April 10 @ 10:00a PT / 1:00p ET / 17:00 UTC Acquisitions - Tuesday, April 15 @ 9:00a PT / 12:00p ET / 16:00 UTC Web Development - Thursday, April 17 @ 10:00a PT / 1:00p ET / 17:00 UTC Circulation - Wednesday, April 23 @ 10:30 PT / 1:30 ET / 17:30 UTC Consortia - Thursday, April 24 @ 9:00a PT / 12:00p ET / 16:00 UTC Visit http://koha-us.org/special-interest-groups/ to learn more and sign up for topic-specific mailing lists. Most meetings and events are recorded and made available at https://www.youtube.com/kohaus Kristi Krueger koha-US Secretary secretary(a)koha-US.org

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Koha - analytical record
by Сычев Игорь Алексеевич 26 Mar '25

26 Mar '25

Hi! Why does the analytical record have "Holdings (0)" "No physical items for this record"? What should I pay attention to? What needs to be fixed? Koha 24.11.03 The record was converted and imported from another ILS. UNIMARC MARC preview: 000 08387nla2a2200589 4500 001 378769 005 20231030003014.0 035 _a (RuTPU)RU\TPU\retro\36230 090 _a 378769 100 _a 20230614d2023 k y0rusy50 ca 101 0 _a rus 102 _a RU 135 _a drcn ---uucaa 181 0 _a i 182 0 _a b 200 1 _a Новый подход к моделированию и прогнозированию эффективности осадко-гелеобразующих методов увеличения нефтеотдачи _f К. М. Фёдоров, А. Я. Гильманов, А. П. Шевелёв 203 _a Текст _c электронный 215 _a 1 файл (963 Kb) 230 _a Электронные текстовые данные (1 файл : 963 Kb) 300 _a Заглавие с титульного листа 320 _a [Библиогр.: с. 90-91 (21 назв.)] 330 _a Актуальность. Моделирование выравнивания профиля приёмистости с использованием технологии закачки осадкообразующих и гелеобразующих составов может быть связано с математической задачей с очень малым параметром, при котором объём закачанной в пласт оторочки геля в призабойной зоне нагнетательной скважины значительно меньше расстояния между скважинами. Существующие подходы к моделированию этой задачи не позволяют описать всех эффектов, связанных с малообъёмными закачками. Целью работы является предложение подхода к моделированию и прогнозированию эффективности закачки осадкообразующих и гелеобразующих составов в пласт. Объекты: нефтяные пласты, на которых применяется осадко-гелеобразующие методы увеличения нефтеотдачи. Методы. Новый подход к моделированию такой задачи состоит в объединении задач оптимизации выравнивания профиля приёмистости нагнетательной скважины и прогнозирования реакции окружающих добывающих скважин. 330 _a Этот подход кратко описан в статье и подтвержден сравнением расчетных данных с результатами статистической обработки данных применения технологий закачки осадкообразующих и гелеобразующих составов в пласты на месторождениях одной из нефтяных компаний. Результаты. Обработка накопленного промыслового опыта применения этих технологий показала, что удельные значения дополнительной добычи нефти после операции выравнивания профиля приёмистости растут с увеличением введённого критерия эффективности обработки - коэффициента выравнивания профиля приёмистости и, наоборот, снижаются при падении коэффициента приемистости скважины после обработки. Предлагаемый подход к прогнозированию и оценке эффективности применения технологий для контроля обводненности добываемой продукции лежит в основе линейки математических моделей применения технологий гелеобразующих, осадкообразующих и полимер-дисперсных составов. 330 _a Relevance. The problem of conformance improvement by precipitation and gel technologies application may be associated with mathematical objective with infinitesimal parameter in which size of gel plug placement in the near wellbore zone of injector is significantly less than interwell distance. Existing approaches to modeling this problem do not allow describing all the effects associated with low-volume injections. The objective of the article is to suggest the approach to simulation and efficiency prediction of precipitation and gel injection technologies. Objects: oil reservoirs on which precipitation and gel enhanced oil recovery methods are used. Materials and methods. New approach to modeling such a problem consists of gluing the optimization objective of injection profile conformance and objective of the prediction of surrounding producers' response. This approach is briefly described in the paper and is validated by the comparison of calculated data with the results of statistical processing of the data of precipitation and gel enhanced oil recovery technologies application on the fields of one of Russian oil companies. 330 _a Results. Processing of the accumulated field experience in the use of these technologies has shown that the specific values of additional oil production after the operation of conformance improvement grow with the increase in the introduced criterion of processing efficiency - the conformance improvement coefficient and, conversely, decrease with a drop in the well injectivity coefficient after processing. The proposed approach to forecasting and evaluating the effectiveness of the use of technologies to conformance control is the basis of a line of mathematical models for the use of gel, precipitation and suspensions injection technologies. 453 _t New approach to simulation and efficiency prediction of precipitation and gel enhanced oil recovery methods _f K. M. Fedorov, A. Ya. Gilmanov, A. P. Shevelev _a Fedorov, Konstantin Mikhailovich 461 1 _0 (RuTPU)RU\TPU\book\312844 _x 2413-1830 _t Известия Томского политехнического университета [Известия ТПУ]. Инжиниринг георесурсов _f Национальный исследовательский Томский политехнический университет (ТПУ) _d 2015- 463 1 _0 (RuTPU)RU\TPU\retro\36199 _t Т. 334, № 5 _v [С. 85-93] _d 2023 610 1 _a электронный ресурс 610 1 _a физико-химические методы 610 1 _a осадкообразующие составы 610 1 _a гелеобразующие составы 610 1 _a профили приемистости 610 1 _a добыча нефти 610 1 _a коэффициент приемистости 610 1 _a physico-chemical methods 610 1 _a precipitation 610 1 _a gels 610 1 _a conformance improvement 610 1 _a oil production 610 1 _a injectivity coefficient 700 1 _a Фёдоров _b К. М. _g Константин Михайлович _6 z01712 701 1 _a Гильманов _b А. Я. _g Александр Янович _6 z02712 701 1 _a Шевелёв _b А. П. _g Александр Павлович 712 0 2 _a Тюменский государственный университет _2 stltpush _3 (RuTPU)RU\TPU\col\4661 _6 z01701 801 2 _a RU _b 63413507 _c 20230620 _g RCR 856 4 _u https://earchive.tpu.ru/bitstream/11683/76431/1/bulletin_tpu-2023-v334-i5-0… 856 4 _u https://doi.org/10.18799/24131830/2023/5/4003 942 _c CF Good Luck! Igor A. Sychev Tomsk Polytechnic University https://lib.tpu.ru

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koha-translate --update
by Сычев Игорь Алексеевич 25 Mar '25

25 Mar '25

Hi! Koha 24.11.03 root@koha3:~# koha-translate --update de-DE Can't use an undefined value as a HASH reference at /usr/share/koha/misc/translator/tmpl_process3.pl line 134. Koha directories hierarchy for de-DE must be created first root@koha3:~# koha-translate --update ru-RU Can't use an undefined value as a HASH reference at /usr/share/koha/misc/translator/tmpl_process3.pl line 134. Koha directories hierarchy for ru-RU must be created first How can I solve this? Good Luck! Igor A. Sychev Tomsk Polytechnic University https://lib.tpu.ru/

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March Koha US education meeting Monday
by Lauren Denny 21 Mar '25

21 Mar '25

Hi everyone, Here is a reminder that the KohaUS education meeting meetings this coming Monday, March 24 at 10:30am PT / 11:30am MT / 12:30pm CT / 1:30pm ET Here is the Zoom Meeting link https://us02web.zoom.us/j/235007217?pwd=N2ZXcHplZ1d1ZUFVQnNtRzlJM2xtZz09 We discuss ways to help educate people to use Koha. Here is a link to this month's agenda https://docs.google.com/document/d/17QubWy3sC8oUlkw-en0YsE__Se3eRQkYO0GmrA9… And the developer forum we hosted a few weeks ago https://www.youtube.com/watch?v=IDq9zWL9swk We would love to have you join us and share what you are using to teach people how to use Koha. Lauren

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Update to Ubuntu version 20 or 22 koha library version 21.05.21.000
by Victor Barroso Oliveira 20 Mar '25

20 Mar '25

Good morning, I need to update to Ubuntu version 20 or 22. What is the best alternative considering that I have installed the koha library version 21.05.21.000? Thanks, Victor

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Re: [Koha] Securing opac-search
by David Cook 19 Mar '25

19 Mar '25

Hi Christina, Locally for the Koha instances I support, I've been writing some experimental user-friendly Koha-based anti-bot code. Firstly, I rate limit the number of visits to opac-search.pl based on IP address blocks. That is, if multiple IP addresses from a /24 or /16 CIDR block perform X visits over Y minutes, they'll get a temporarily block and see a user-friendly Koha page saying too many requests are coming from their device. (However, as you've noted, this won't work against bots that use a different IP address very every request.) Secondly, for pages like opac-search.pl, opac-detail, etc, I've been working on checks which identify obvious bots (by UserAgent string or other particular HTTP headers), identify mistakes made in the bot request (some bots try to be too clever and give themselves away in the process), etc. At the moment, they mostly just get a very small 404 message, which reduces impact on the Koha server. This takes care of a lot of bots. (However, there are still bots that perfectly mimic real human users, which get past this check. Also, this check can create false positives for legitimate third-party integrations like Discovery systems, which is a problem.) Thirdly, I have a user-friendly challenge screen produced by Koha, which in theory will let humans prove they're human and not bots. At the moment, the threshold is extremely high, so it doesn't get triggered. But I'm thinking of lowering the threshold. (However, this means that it's very likely that real humans will trigger this check and get the challenge screen. So I need to make sure the "friction" they feel is minimal, so the user experience is still pleasant. This is still a work in progress. I have all the ideas and code in my head, but we've been managing bots well, so this hasn't been a high priority for us.) -- The first change is "In Discussion" on Bugzilla as Bug 39109. I haven't submitted patches for the second and third changes yet, as they depend on other local code at the moment and I'm still fine tuning much of it. But it is my intention to submit patches for them eventually. The "challenge screen" I'll probably wait the longest until it's proven in my local systems. Unfortunately, that's not much help in the short term, but hopefully help in the long-term. I'm always happy to discuss this topic with people as well if they have their own changes in mind or want to help out. David Cook Senior Software Engineer Prosentient Systems Suite 7.03 6a Glen St Milsons Point NSW 2061 Australia Office: 02 9212 0899 -----Original Message----- Date: Tue, 18 Mar 2025 13:59:14 +0100 From: "Fairlamb, Christina" <cjf(a)wmu.se> To: koha <koha(a)lists.katipo.co.nz> Subject: [Koha] Securing opac-search Message-ID: <CANrPTp4D9kONGYxZktMGpvFjdVqdhpPhKD3mau1ceN6S91fkCg(a)mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Hello, Koha 24.11.01 Not strictly a Koha problem but something I know a lot of Koha users face. After years of running happily with fail2ban and robots.txt blocking bots/crawlers, the security seems to have passed. We've been getting more and more bots of late switching IPs before bans can take place, perhaps they could be ddos, either way grinding koha to a halt. I've had to switch OPACPublic to disable for now. I can't find much about securing a server against these types of hits. Does anyone else running a small server have any guidance on what could be done/the next steps? I'd ideally like to keep the OPAC public. Thank you Christina

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Search Sort by Title (A-Z) for non-Latin alphabets like Arabic Language
by vinod kumar 18 Mar '25

18 Mar '25

Hi All, I was wondering if anyone has successfully gotten the "Sort by Title (A-Z)" feature to work properly in Koha for non-latin languages. At the moment, any foreign language materials with titles in non-Latin alphabets are not sorting correctly for me. It seems like search results for non-latin languages that use different scripts (e.g., Hindi, Korean) or languages that read from right to left (e.g., Hebrew, Arabic), sort by title A-Z is not working. Is there a general solution for this? Or how are others dealing with this issue? Please help me with my library having "Arabic" titles. Koha 23.11 installed at ubuntu 24.04 LTS. Thanks & Regards Vinod Kumar

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Securing opac-search
by Fairlamb, Christina 18 Mar '25

18 Mar '25

Hello, Koha 24.11.01 Not strictly a Koha problem but something I know a lot of Koha users face. After years of running happily with fail2ban and robots.txt blocking bots/crawlers, the security seems to have passed. We've been getting more and more bots of late switching IPs before bans can take place, perhaps they could be ddos, either way grinding koha to a halt. I've had to switch OPACPublic to disable for now. I can't find much about securing a server against these types of hits. Does anyone else running a small server have any guidance on what could be done/the next steps? I'd ideally like to keep the OPAC public. Thank you Christina

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Contact from Cambridge University Press
by Kate Phillips 18 Mar '25

18 Mar '25

Hello, I have received an email from a mutual customer asking how to activate our open access material in KOHA but I have not dealt with this before and would really like to talk to someone about how our collections are presented in your system and whether there is anything that I can do to help facilitate the ingestion of our metadata. We have a cataloguing librarian who enhances our MARC records to a very high standard and we could also send these to you if someone is able to tell me how we would go about doing this. I would be very grateful if someone could get back to me about this asap. Many thanks, Kate Kate Phillips Senior Discovery Liaison Executive Cambridge University Press kate.phillips(a)cambridge.org Shaftesbury Road, Cambridge CB2 8EA cambridge.org/universitypress<https://www.cambridge.org/universitypress> | Facebook<https://www.facebook.com/CambridgeUP> | Twitter<https://twitter.com/CambridgeUP> | LinkedIn<https://www.linkedin.com/showcase/cambridgeuniversitypress/> | Instagram<https://www.instagram.com/cambridgeuniversitypress/> | YouTube<https://www.youtube.com/@CambridgeUP> Cambridge University Press & Assessment is the publishing and assessment department of the University of Cambridge. The corporate title of the University is The Chancellor, Masters, and Scholars of the University of Cambridge. Our principal office is at Shaftesbury Road, Cambridge, CB2 8EA, United Kingdom, with registered VAT number GB 823 8476 09. We are a not-for-profit organisation and an exempt charity under the Charities Act 2011. Disclaimer This email is intended solely for the recipient and may contain confidential information. If you have received this email in error, please let us know and then delete the original email and any attachments. Do not use, copy or disclose the contents of this email or any attachment. Any views or opinions in this email are solely those of the author and do not necessarily represent those of Cambridge, unless specifically stated.

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