<atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
<item>
- <title>Cura, the nice 3D print slicer, is now in Debian Unstable</title>
- <link>http://people.skolelinux.org/pere/blog/Cura__the_nice_3D_print_slicer__is_now_in_Debian_Unstable.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Cura__the_nice_3D_print_slicer__is_now_in_Debian_Unstable.html</guid>
- <pubDate>Sun, 17 Dec 2017 07:00:00 +0100</pubDate>
- <description><p>After several months of working and waiting, I am happy to report
-that the nice and user friendly 3D printer slicer software Cura just
-entered Debian Unstable. It consist of five packages,
-<a href="https://tracker.debian.org/pkg/cura">cura</a>,
-<a href="https://tracker.debian.org/pkg/cura-engine">cura-engine</a>,
-<a href="https://tracker.debian.org/pkg/libarcus">libarcus</a>,
-<a href="https://tracker.debian.org/pkg/fdm-materials">fdm-materials</a>,
-<a href="https://tracker.debian.org/pkg/libsavitar">libsavitar</a> and
-<a href="https://tracker.debian.org/pkg/uranium">uranium</a>. The last
-two, uranium and cura, entered Unstable yesterday. This should make
-it easier for Debian users to print on at least the Ultimaker class of
-3D printers. My nearest 3D printer is an Ultimaker 2+, so it will
-make life easier for at least me. :)</p>
-
-<p>The work to make this happen was done by Gregor Riepl, and I was
-happy to assist him in sponsoring the packages. With the introduction
-of Cura, Debian is up to three 3D printer slicers at your service,
-Cura, Slic3r and Slic3r Prusa. If you own or have access to a 3D
-printer, give it a go. :)</p>
-
-<p>The 3D printer software is maintained by the 3D printer Debian
-team, flocking together on the
-<a href="http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/3dprinter-general">3dprinter-general</a>
-mailing list and the
-<a href="irc://irc.debian.org/#debian-3dprinting">#debian-3dprinting</a>
-IRC channel.</p>
-
-<p>The next step for Cura in Debian is to update the cura package to
-version 3.0.3 and then update the entire set of packages to version
-3.1.0 which showed up the last few days.</p>
+ <title>Oppdatert Noark 5 Tjenestegrenesnitt versjon 1.0 for Noark 5.5.0</title>
+ <link>http://people.skolelinux.org/pere/blog/Oppdatert_Noark_5_Tjenestegrenesnitt_versjon_1_0_for_Noark_5_5_0.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Oppdatert_Noark_5_Tjenestegrenesnitt_versjon_1_0_for_Noark_5_5_0.html</guid>
+ <pubDate>Fri, 5 Jul 2019 17:20:00 +0200</pubDate>
+ <description><p>Jeg er veldig glad for å kunne fortelle at i går ble ny versjon av
+<a href="https://www.arkivverket.no/forvaltning-og-utvikling/noark-standarden/noark-5/tjenestegrensesnitt-noark5">API-spesifikasjonen
+for Noark 5 Tjenestegrensesnitt</a> gitt ut. Det så lenge mørkt ut
+for sjansene for å få inn nødvendige korreksjoner i
+spesifikasjonsteksten innen rimelig tid, men takket være intens og god
+innsats fra Mona og Anne Sofie hos Arkivverket de siste ukene, så ble
+resultatet som ble gitt ut på USAs frigjøringsdag mye bedre enn jeg
+fryktet.</p>
+
+<p>Spesifikasjonen er
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/">tilgjengelig
+som markdown-filer i Arkivverkets github-prosjekt for dette</a>, og de
+aller fleste av forslagene til forbedringer fra oss som holder på med
+<a href="https://gitlab.com/OsloMet-ABI/nikita-noark5-core">Nikita-prosjektet</a>
+kom med i denne nye og oppdaterte spesifikasjonsteksten. Det er
+fortsatt mye som gjenstår før den er entydig, klar og sikrer samvirke
+på tvers av leverandører, men utgangspunktet er veldig mye bedre enn
+forrige versjon fra 2016. Ta gjerne en titt.</p>
+
+<p>Ellers må jeg jo si at det var hyggelig å se at min forrige
+bloggpost om tjenestegrensesnittet fikk en
+<ahref="https://beta.arkivverket.no/post/186020592045/noark-5-versjon-50-tjenestegrensesnitt-10">lenke
+fra Arkivverket Beta</a>.</p>
+
+<p>Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
+det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
+til min adresse
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.
+Merk, betaling med bitcoin er ikke anonymt. :)</p>
</description>
</item>
<item>
- <title>Idea for finding all public domain movies in the USA</title>
- <link>http://people.skolelinux.org/pere/blog/Idea_for_finding_all_public_domain_movies_in_the_USA.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_finding_all_public_domain_movies_in_the_USA.html</guid>
- <pubDate>Wed, 13 Dec 2017 10:15:00 +0100</pubDate>
- <description><p>While looking at
-<a href="http://onlinebooks.library.upenn.edu/cce/">the scanned copies
-for the copyright renewal entries for movies published in the USA</a>,
-an idea occurred to me. The number of renewals are so few per year, it
-should be fairly quick to transcribe them all and add references to
-the corresponding IMDB title ID. This would give the (presumably)
-complete list of movies published 28 years earlier that did _not_
-enter the public domain for the transcribed year. By fetching the
-list of USA movies published 28 years earlier and subtract the movies
-with renewals, we should be left with movies registered in IMDB that
-are now in the public domain. For the year 1955 (which is the one I
-have looked at the most), the total number of pages to transcribe is
-21. For the 28 years from 1950 to 1978, it should be in the range
-500-600 pages. It is just a few days of work, and spread among a
-small group of people it should be doable in a few weeks of spare
-time.</p>
-
-<p>A typical copyright renewal entry look like this (the first one
-listed for 1955):</p>
-
-<p><blockquote>
- ADAM AND EVIL, a photoplay in seven reels by Metro-Goldwyn-Mayer
- Distribution Corp. (c) 17Aug27; L24293. Loew's Incorporated (PWH);
- 10Jun55; R151558.
-</blockquote></p>
-
-<p>The movie title as well as registration and renewal dates are easy
-enough to locate by a program (split on first comma and look for
-DDmmmYY). The rest of the text is not required to find the movie in
-IMDB, but is useful to confirm the correct movie is found. I am not
-quite sure what the L and R numbers mean, but suspect they are
-reference numbers into the archive of the US Copyright Office.</p>
-
-<p>Tracking down the equivalent IMDB title ID is probably going to be
-a manual task, but given the year it is fairly easy to search for the
-movie title using for example
-<a href="http://www.imdb.com/find?q=adam+and+evil+1927&s=all">http://www.imdb.com/find?q=adam+and+evil+1927&s=all</a>.
-Using this search, I find that the equivalent IMDB title ID for the
-first renewal entry from 1955 is
-<a href="http://www.imdb.com/title/tt0017588/">http://www.imdb.com/title/tt0017588/</a>.</p>
-
-<p>I suspect the best way to do this would be to make a specialised
-web service to make it easy for contributors to transcribe and track
-down IMDB title IDs. In the web service, once a entry is transcribed,
-the title and year could be extracted from the text, a search in IMDB
-conducted for the user to pick the equivalent IMDB title ID right
-away. By spreading out the work among volunteers, it would also be
-possible to make at least two persons transcribe the same entries to
-be able to discover any typos introduced. But I will need help to
-make this happen, as I lack the spare time to do all of this on my
-own. If you would like to help, please get in touch. Perhaps you can
-draft a web service for crowd sourcing the task?</p>
-
-<p>Note, Project Gutenberg already have some
-<a href="http://www.gutenberg.org/ebooks/search/?query=copyright+office+renewals">transcribed
-copies of the US Copyright Office renewal protocols</a>, but I have
-not been able to find any film renewals there, so I suspect they only
-have copies of renewal for written works. I have not been able to find
-any transcribed versions of movie renewals so far. Perhaps they exist
-somewhere?</p>
-
-<p>I would love to figure out methods for finding all the public
-domain works in other countries too, but it is a lot harder. At least
-for Norway and Great Britain, such work involve tracking down the
-people involved in making the movie and figuring out when they died.
-It is hard enough to figure out who was part of making a movie, but I
-do not know how to automate such procedure without a registry of every
-person involved in making movies and their death year.</p>
+ <title>Teach kids to protect their privacy - the EDRi way</title>
+ <link>http://people.skolelinux.org/pere/blog/Teach_kids_to_protect_their_privacy___the_EDRi_way.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Teach_kids_to_protect_their_privacy___the_EDRi_way.html</guid>
+ <pubDate>Thu, 4 Jul 2019 19:10:00 +0200</pubDate>
+ <description><p>Childs need to learn how to guard their privacy too. To help them,
+<a href="https://edri.org/">European Digital Rights (EDRi)</a> created
+a colorful booklet providing information on several privacy related topics,
+and tips on how to protect ones privacy in the digital age.</p>
+
+<p>The 24 page booklet titled Digital Defenders is
+<a href="https://edri.org/digital-defenders-help-kids-defend-their-privacy-around-europe">available
+in several languages</a>. Thanks to the valuable contributions from
+members of <a href="https://efn.no/">the Electronic Foundation Norway
+(EFN)</a> and others, it is also available in Norwegian Bokmål.
+If you would like to have it available in your language too,
+<a href="https://hosted.weblate.org/projects/efn/privacy4kids/">contribute
+via Weblate</a> and get in touch.</p>
+
+<p>But a funny, well written and good looking PDF do not have much
+impact, unless it is read by the right audience. To increase the
+chance of kids reading it, I am currently assisting EFN in getting
+copies printed on paper to distribute on the street and in class
+rooms. Print the booklet was made possible thanks to a small et of
+great sponsors. Thank you very much to each and every one of them! I
+hope to have the printed booklet ready to hand out on Tuesday, when
+<a href="https://www.nuug.no/>">the Norwegian Unix Users Group</a> is
+organizing <a href="https://wiki.nuug.no/sommerfest2019">its yearly
+barbecue for geeks and free software zealots in the Oslo area</a>. If
+you are nearby, feel free to come by and check out the party and the
+booklet.</p>
+
+<p>If the booklet prove to be a success, it would be great to get
+more sponsoring and distribute it to every kid in the country. :)</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
</item>
<item>
- <title>Is the short movie «Empty Socks» from 1927 in the public domain or not?</title>
- <link>http://people.skolelinux.org/pere/blog/Is_the_short_movie__Empty_Socks__from_1927_in_the_public_domain_or_not_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Is_the_short_movie__Empty_Socks__from_1927_in_the_public_domain_or_not_.html</guid>
- <pubDate>Tue, 5 Dec 2017 12:30:00 +0100</pubDate>
- <description><p>Three years ago, a presumed lost animation film,
-<a href="https://en.wikipedia.org/wiki/Empty_Socks">Empty Socks from
-1927</a>, was discovered in the Norwegian National Library. At the
-time it was discovered, it was generally assumed to be copyrighted by
-The Walt Disney Company, and I blogged about
-<a href="http://people.skolelinux.org/pere/blog/Opphavsretts_status_for__Empty_Socks__fra_1927_.html">my
-reasoning to conclude</a> that it would would enter the Norwegian
-equivalent of the public domain in 2053, based on my understanding of
-Norwegian Copyright Law. But a few days ago, I came across
-<a href="http://www.toonzone.net/forums/threads/exposed-disneys-repurchase-of-oswald-the-rabbit-a-sham.4792291/">a
-blog post claiming the movie was already in the public domain</a>, at
-least in USA. The reasoning is as follows: The film was released in
-November or Desember 1927 (sources disagree), and presumably
-registered its copyright that year. At that time, right holders of
-movies registered by the copyright office received government
-protection for there work for 28 years. After 28 years, the copyright
-had to be renewed if the wanted the government to protect it further.
-The blog post I found claim such renewal did not happen for this
-movie, and thus it entered the public domain in 1956. Yet someone
-claim the copyright was renewed and the movie is still copyright
-protected. Can anyone help me to figure out which claim is correct?
-I have not been able to find Empty Socks in Catalog of copyright
-entries. Ser.3 pt.12-13 v.9-12 1955-1958 Motion Pictures
-<a href="http://onlinebooks.library.upenn.edu/cce/1955r.html#film">available
-from the University of Pennsylvania</a>, neither in
-<a href="https://babel.hathitrust.org/cgi/pt?id=mdp.39015084451130;page=root;view=image;size=100;seq=83;num=45">page
-45 for the first half of 1955</a>, nor in
-<a href="https://babel.hathitrust.org/cgi/pt?id=mdp.39015084451130;page=root;view=image;size=100;seq=175;num=119">page
-119 for the second half of 1955</a>. It is of course possible that
-the renewal entry was left out of the printed catalog by mistake. Is
-there some way to rule out this possibility? Please help, and update
-the wikipedia page with your findings.
+ <title>Nikita og Noark 5 tjenestegrensesnittet tilbyr ny måte å tenke arkivering</title>
+ <link>http://people.skolelinux.org/pere/blog/Nikita_og_Noark_5_tjenestegrensesnittet_tilbyr_ny_m_te___tenke_arkivering.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Nikita_og_Noark_5_tjenestegrensesnittet_tilbyr_ny_m_te___tenke_arkivering.html</guid>
+ <pubDate>Fri, 21 Jun 2019 11:30:00 +0200</pubDate>
+ <description><p><em>av Thomas Sødring (OsloMet) og Petter Reinholdtsen (foreningen
+NUUG)</em></p>
+
+<p>Nikita Noark 5-kjerne er et fri programvareprosjekt som tar i bruk
+Arkivverkets spesifikasjonen for Noark 5 Tjenestegrensesnitt og tilbyr
+et maskinlesbart grensesnitt (arkiv-API) til datasystemer som trenger å
+arkivere dokumenter og informasjon. I tillegg tilbyr Nikita et
+nettleserbasert brukergrensesnitt for brukere av arkivet. Dette
+brukergrensesnittet benytter det maskinlesbare grensesnittet. Noark 5
+Tjenestegrensesnitt er en ny måte å tenke arkivering, med fokus på
+automatisering og maskinell behandling av arkivmateriale, i stedet for
+å fokusere på brukergrensesnitt. En kan tenke på
+tjenestegrensesnittet som arkivet uten brukergrensesnitt, der flere
+aktører kan koble til ulike brukergrensesnitt, tilpasset ulike
+behov.</p>
+
+<p>Historisk sett gjorde Noark standarden en veldig bra jobb med
+overgangen fra
+papir til digital saksbehandling, men det har kommet til kort på andre
+områder. Den teknologiske utviklingen har brakt oss ditt at vi kan og
+skal forvente langt mer fra en arkivkjerne enn før, men det offentlig
+er ofte konservativ når det gjelder nytenking. For lengst skulle
+begreper som samvirke mellom datasystemer, metadata, prosess og
+tjenestegrensesnitt (API) vært dominerende når systemer kjøpes
+inn. Dessverre er det slik at ikke alle ønsker samvirke mellom
+datasystemer velkommen, og det kan være trygt å kjøpe «svarte bokser»
+der du slipper å ta stilling til hvordan man skal få flere systemer
+til å virke sammen. Men IT-arkitektur er et begrep arkivfolk også
+begynner å ta inn over seg.</p>
+
+<p>Slike systemer for å organisere metadata bør ha nettbaserte
+tjenestegrensesnitt der brukergrensesnitt er tydelig adskilt fra
+bakenforliggende system. Det finnes mange rapporter som snakker om å
+bryte ned siloer i forvaltningen og standardiserte tjenestegrensesnitt
+er det viktigste virkemiddel mot datasiloer og legger til rette for
+økt samvirke mellom systemer. Et standardisert tjenestegrensesnitt er
+et viktig middel for å få systemer til å samhandle da det sikrer at
+ulike produsenters systemer kan snakke sammen på tvers. Samfunnet
+fungerer ikke uten standardisering. Vi har alle samme strømstyrke og
+kontakter i veggene og kjører alle på høyre side av veien i Norge. Det er i en slik
+sammenheng at prosjektet «Noark 5 Tjenestegrensesnitt» er veldig
+viktig. Hvis alle leverandører av arkivsystemer forholdt seg til et
+standardisert tjenestegrensesnitt kunne kostnadene for arkivering
+reduseres. Tenk deg at du er en kommune som ønsker et fagsystem integrert
+med arkivløsningen din. I dag må fagsystemleverandøren vite og
+tilpasse seg den spesifikke versjonen og varianten av arkivløsningen
+du har. Hvis vi antar at alle leverandører av arkivkjerner har solgt
+inn enten SOAP eller REST-grensesnitt til kunder de siste 10 årene og
+det kommer endret versjon av grensesnittet innimellom, så gir det
+veldig mange forskjellige tjenestegrensesnitt en fagsystemleverandør
+må forholde seg til. Med 12 leverandører og kvartalsvise oppdateringer
+kan det potensielt bli 96 ulike varianter hvert eneste år. Det sier
+seg selv at det blir dyrt. Men det blir faktisk verre. Hvis du senere
+ønsker å bytte ut arkivsystemet med et annet så er du avhengig å få
+alle integrasjonene dine laget på nytt. Dette kan gjøre at du velger å
+forbli hos en dårlig leverandør framfor å skaffe nytt system, fordi
+det blir for vanskelig og dyrt å bytte. Dermed etableres det «små»
+monopolsituasjoner som er vanskelig å bryte ut av. Dårlige valg i dag
+kan ha uante kostander på sikt. I Nikita-prosjektet har vi kun jobbet
+opp mot Noark 5 Tjenestegrensesnittet. Det har tatt en god del
+ressurser å sette seg inn i spesifikasjonen og ta den i bruk, spesielt
+på grunn av uklarheter i spesifikasjonen. Hvis vi måtte gjøre det
+samme for alle versjoner og varianter av de forskjellige
+tjenestegrensesnittene ville det blitt veldig tidkrevende og
+kostbart.</p>
+
+<p>For deg som arkivar er digitalisering og systemer som skal virke
+sammen en del av den nye hverdagen. Du har kanskje blitt skånet for
+det ved å kjøpe svarte bokser, men du risikerer at du gjør deg selv en
+bjørnetjeneste. Det kan oppleves som kjedelig å fortelle kolleger at
+du skal sette deg inn i et tjenestegrensesnitt, men dette er faktisk
+veldig spennende. Tjenestegrensesnittet er på en måte blitt levende og
+det er spesielt et begrep du bør merke deg: OData. Å trekke inn deler
+av OData-standarden som en måte å filtrere entitetsøk i et arkivsystem
+var et nyttig trekk i prosjektet. Følgende eksempel er en
+OData-spørring det går an å sende inn til en standardisert
+arkivkjerne:</p>
-<p>As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
+<p><blockquote>
+.../sakarkiv/journalpost?filter=contains(tittel, 'nabovarsel')
+</blockquote></p>
+
+<p>Spørringen over vil hente en liste av alle dine journalposter der
+tittelen til journalposten inneholder ordet 'nabovarsel'. Alle
+leverandører som implementerer tjenestegrensesnittet vil måtte tilby
+dette. Det betyr at hvis du lærer dette språket for et system, vil det
+være gjeldende for alle. Dette er egentlig en ny måte å søke i
+arkivdatabasen på og vil være svært nyttig, for eksempel kan søk i
+tjenestegrensesnittet antagelig brukes til å hente ut offentlig
+postjournal. I arkivverden pleier vi å like teknologier som er
+menneskelesbart, da vet vi det er enkelt og nyttig! OData er også
+viktig fordi det kan bli en ny måte å svare innsynsforespørsler på i
+tråd med offentlighetsloven § 9, der retten til å kreve innsyn i
+sammenstilling fra databaser er nedfelt. I dag ser vi
+forvaltningsorganer som avviser slike krav fordi det «ikke kan gjøres
+med enkle framgangsmåter». Bruken av OData i tjenestegrensesnittet,
+sammen med maskinlesbar markeringsformater kan være et viktig bidrag
+til å åpne arkivene i tråd med prinsippene om en åpen og transparent
+forvaltning.</p>
+
+<p>Standardisering er viktig fordi det <em>kan</em> sikre samvirke.
+Men den effekten kommer kun hvis standardiseringen sikrer at alle
+forstår standarden på samme måte, dvs. at den er entydig og klar. En
+god måte å sikre en entydig og klar spesifikasjon er ved å kreve at
+det finnes minst to ulike implementasjoner som følger spesifikasjonen
+og som kan snakke sammen, det vil si at de snakker samme språk, slik
+IETF krever for alle sine standarder, før spesifikasjonen anses å være
+ferdig. Tilbakemelding fra miljøet forteller at både leverandører og
+kunder har et avslappet forhold til Noark 5 Tjenestegrensesnitt og det
+er så langt kun Evry som har visst offentlig at de har en
+implementasjon av tjenestegrensesnittet. Evry, HK Data og Fredrikstad
+kommune er igang med et pilotprosjekt på Noark 5
+Tjenestegrensesnitt. For å redusere kostnadene for samvirkende
+datasystemer betraktelig, er det veldig viktig at vi kommer i en
+situasjon der alle leverandører har sine egne implementasjoner av
+tjenestegrensesnittet, og at disse oppfører seg likt og i tråd med det
+som er beskrevet i spesifikasjonen.</p>
+
+<p>Det er her fri programvare spiller en viktig rolle. Med en uklar
+standard blir det som en polsk riksdag, der ingenting fungerer. Nikita
+er en fri programvareimplementasjon av tjenestegrensesnitt og kan
+fungere som teknisk referanse slik at leverandører enklere kan se og
+forstå hvordan standarden skal tolkes. Vi har i Nikitaprosjektet
+erfart å ende opp med vidt forskjellige tolkninger når
+prosjektmedlemmene leser spesifikasjonsteksten, en effekt av en uklar
+spesifikasjon. Men Nikitaprosjektet har også utviklet et test-program
+som sjekker om et tjenestegrensesnitt er i samsvar med standarden, og
+prosjektet bruker det hele tiden for å sikre at endringer og
+forbedringer fungerer. Egenerklæringsskjemaenes dager kan være talte!
+Snart vil du selv kunne teste hver oppdatering av arkivsystemet med en
+uavhengig sjekk.</p>
+
+<p>Fri programvare representerer en demokratisering av kunnskap der
+tolkning- og innlåsingsmakt flyttes fra leverandør til allmenheten.
+Med fri programvare har du en litt annerledes verdikjede, der selve
+produktet ikke holdes hemmelig for å tjene penger, slik en gjør med
+ufri programvare og skytjenester som ikke bruker fri programvare, men
+du kan tjene penger på andre deler av verdikjeden. Med fri programvare
+kan samfunnet betale for å videreutvikle nyttig
+fellesfunksjonalitet.</p>
+
+<p>Nikita er en fri programvareimplementasjon av tjenestegrensesnittet og
+kan fungere som en referanseimplementasjon dersom det er ønskelig.
+Alle har lik tilgang til koden og det koster ingenting å ta den i bruk
+og utforske det. Nikitaprosjektet ønsker tjenestegrensesnittet
+velkommen og stiller veldig gjerne opp i diskusjoner om tolkning av
+tjenestegrensesnittet. Nikita er bygget på moderne
+programmeringsrammeverk og utviklet i full åpenhet. Men Nikita er ikke
+noe du kan kjøpe. Nikita er først og fremst et verktøy for forsking og
+utvikling laget for å fremme forskning på arkivfeltet. Systemer som
+virker sammen har alltid vært hovedfokus og vil være det fremover.
+Det brukes som undervisningsverktøy der studentene ved OsloMet lærer
+om administrativt oppsett, saksbehandling, uttrekk og samvirkende
+datasystemer. Det brukes også som forskningsobjekt der vi ser på
+import av dokumentsamlinger, bruk av blokkjede og andre nyskapende
+måter å tenke arkiv på. Det er dog helt greit om andre tar Nikita og
+pakker det for å selge det som produkt. Forvaltningsorganer med
+sterke drift- og utviklingsmiljøer kan også se på Nikita og utforske
+hva som er mulig. Dette kan de gjøre uten å måtte betale for
+bruksrettigheter eller tilgang til konsulenter. Men arkivering blir
+ikke gratis på grunn av Nikita. Det trengs fortsatt folk med
+kompetanse og tid til å ta i bruk Nikita.</p>
+
+<p>Nikita har nylig kommet med en ny utgave, den sjette i rekken.
+Systemet er ikke ferdig, mest på grunn av at API-spesifikasjonen for
+Noark 5 Tjenestegrensesnitt ikke er ferdig, men allerede i dag kan en
+bruke Nikita som arkiv. Vi har laget eksempelsystem for å importere
+data fra deponi-XML og slik gjøre eksisterende arkivdata tilgjengelig
+via et API. Vi har også laget en testklient som importerer epost inn
+i arkivet med vedlegg der epostenes trådinformasjon brukes til å legge
+eposttråder i samme arkivmappe, og en annen testklient som henter
+epost ut av en arkivmappe på mbox-format slik at en vanlig epostklient
+kan brukes til å lese igjennom og svare på epostene i en
+arkivmappe. De som vil ta en titt på Nikita kan besøke
+<a href="https://nikita.oslomet.no">https://nikita.oslomet.no</a> og
+logge inn med brukernavn «admin@example.com» og passord «password».
+Dette gir tilgang til det forenklede brukergrensesnittet som brukes
+til undervisning. De som heller vil ta en titt under panseret kan
+besøke
+<a href="https://nikita.oslomet.no/browse.html">https://nikita.oslomet.no/browse.html</a>
+og der se hvordan API-et fungerer mer i detalj. Innloggingsdetaljer
+her er det samme som for brukergrensesnittet.</p>
+
+<p>Fremover er fokuset på forbedring av spesifikasjonen Noark 5
+Tjenestegrensesnitt. De som skrev tjenestegrensesnittet gjorde et
+interessant og framtidsrettet grep, de skilte sak fra arkiv.
+Tjenestegrensesnittet består av flere "pakker", der noen er
+grunnleggende mens andre bygger på de grunnleggende pakkene. Pakkene
+som er beskrevet så langt heter «arkivstruktur», «sakarkiv»,
+«administrasjon», «loggogsporing» og «moeter» (dessverre
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/pull/120">planlagt
+fjernet</a> i første utgave). Etter hvert håper vi å utforske
+prosses- og metadatabeskrivelser til flere fagområder og bidra til at
+tjenestegrensesnittet kan legge til flere pakker som «byggarkiv»,
+«barnevern», «personal», «barnehage», der arkivfaglig metadata- og
+dokumentasjonsbehov er kartlagt og standardisert.</p>
+
+<p>Nikita utvikles av en liten prosjektgruppe, og vi er alltid
+interessert å bli flere. Hvis en åpen, fri og standardisert tilnærming
+til arkivering høres interessant ut, bli med oss på veien videre. Vi
+er tilstede på IRC-kanalen #nikita hos FreeNode (tilgjengelig via
+nettleser på
+<a href="https://webchat.freenode.net?channels=#nikita">https://webchat.freenode.net?channels=#nikita</a>),
+og har en e-postliste nikita-noark@nuug.no hos NUUG (tilgjengelig for
+påmelding og arkiv på
+<a href="https://lists.nuug.no/mailman/listinfo/nikita-noark">https://lists.nuug.no/mailman/listinfo/nikita-noark</a>)
+der en kan følge med eller være med oss på den spennende veien videre.
+Spesifikasjonen for Noark 5 Tjenestegrensesnitt vedlikeholdes på
+github,
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/">https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/</a>.</p>
+
+<p>Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
+det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
+til min adresse
<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Metadata proposal for movies on the Internet Archive</title>
- <link>http://people.skolelinux.org/pere/blog/Metadata_proposal_for_movies_on_the_Internet_Archive.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Metadata_proposal_for_movies_on_the_Internet_Archive.html</guid>
- <pubDate>Tue, 28 Nov 2017 12:00:00 +0100</pubDate>
- <description><p>It would be easier to locate the movie you want to watch in
-<a href="https://www.archive.org/">the Internet Archive</a>, if the
-metadata about each movie was more complete and accurate. In the
-archiving community, a well known saying state that good metadata is a
-love letter to the future. The metadata in the Internet Archive could
-use a face lift for the future to love us back. Here is a proposal
-for a small improvement that would make the metadata more useful
-today. I've been unable to find any document describing the various
-standard fields available when uploading videos to the archive, so
-this proposal is based on my best quess and searching through several
-of the existing movies.</p>
-
-<p>I have a few use cases in mind. First of all, I would like to be
-able to count the number of distinct movies in the Internet Archive,
-without duplicates. I would further like to identify the IMDB title
-ID of the movies in the Internet Archive, to be able to look up a IMDB
-title ID and know if I can fetch the video from there and share it
-with my friends.</p>
-
-<p>Second, I would like the Butter data provider for The Internet
-archive
-(<a href="https://github.com/butterproviders/butter-provider-archive">available
-from github</a>), to list as many of the good movies as possible. The
-plugin currently do a search in the archive with the following
-parameters:</p>
-
-<p><pre>
-collection:moviesandfilms
-AND NOT collection:movie_trailers
-AND -mediatype:collection
-AND format:"Archive BitTorrent"
-AND year
-</pre></p>
-
-<p>Most of the cool movies that fail to show up in Butter do so
-because the 'year' field is missing. The 'year' field is populated by
-the year part from the 'date' field, and should be when the movie was
-released (date or year). Two such examples are
-<a href="https://archive.org/details/SidneyOlcottsBen-hur1905">Ben Hur
-from 1905</a> and
-<a href="https://archive.org/details/Caminandes2GranDillama">Caminandes
-2: Gran Dillama from 2013</a>, where the year metadata field is
-missing.</p>
-
-So, my proposal is simply, for every movie in The Internet Archive
-where an IMDB title ID exist, please fill in these metadata fields
-(note, they can be updated also long after the video was uploaded, but
-as far as I can tell, only by the uploader):
-
-<dl>
-
-<dt>mediatype</dt>
-<dd>Should be 'movie' for movies.</dd>
-
-<dt>collection</dt>
-<dd>Should contain 'moviesandfilms'.</dd>
-
-<dt>title</dt>
-<dd>The title of the movie, without the publication year.</dd>
-
-<dt>date</dt>
-<dd>The data or year the movie was released. This make the movie show
-up in Butter, as well as make it possible to know the age of the
-movie and is useful to figure out copyright status.</dd>
-
-<dt>director</dt>
-<dd>The director of the movie. This make it easier to know if the
-correct movie is found in movie databases.</dd>
-
-<dt>publisher</dt>
-<dd>The production company making the movie. Also useful for
-identifying the correct movie.</dd>
-
-<dt>links</dt>
-
-<dd>Add a link to the IMDB title page, for example like this: &lt;a
-href="http://www.imdb.com/title/tt0028496/"&gt;Movie in
-IMDB&lt;/a&gt;. This make it easier to find duplicates and allow for
-counting of number of unique movies in the Archive. Other external
-references, like to TMDB, could be added like this too.</dd>
-
-</dl>
-
-<p>I did consider proposing a Custom field for the IMDB title ID (for
-example 'imdb_title_url', 'imdb_code' or simply 'imdb', but suspect it
-will be easier to simply place it in the links free text field.</p>
-
-<p>I created
-<a href="https://github.com/petterreinholdtsen/public-domain-free-imdb">a
-list of IMDB title IDs for several thousand movies in the Internet
-Archive</a>, but I also got a list of several thousand movies without
-such IMDB title ID (and quite a few duplicates). It would be great if
-this data set could be integrated into the Internet Archive metadata
-to be available for everyone in the future, but with the current
-policy of leaving metadata editing to the uploaders, it will take a
-while before this happen. If you have uploaded movies into the
-Internet Archive, you can help. Please consider following my proposal
-above for your movies, to ensure that movie is properly
-counted. :)</p>
-
-<p>The list is mostly generated using wikidata, which based on
-Wikipedia articles make it possible to link between IMDB and movies in
-the Internet Archive. But there are lots of movies without a
-Wikipedia article, and some movies where only a collection page exist
-(like for <a href="https://en.wikipedia.org/wiki/Caminandes">the
-Caminandes example above</a>, where there are three movies but only
-one Wikidata entry).</p>
+ <title>Jami/Ring, finally functioning peer to peer communication client</title>
+ <link>http://people.skolelinux.org/pere/blog/Jami_Ring__finally_functioning_peer_to_peer_communication_client.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Jami_Ring__finally_functioning_peer_to_peer_communication_client.html</guid>
+ <pubDate>Wed, 19 Jun 2019 08:50:00 +0200</pubDate>
+ <description><p>Some years ago, in 2016, I
+<a href="http://people.skolelinux.org/pere/blog/Experience_and_updated_recipe_for_using_the_Signal_app_without_a_mobile_phone.html">wrote
+for the first time about</a> the Ring peer to peer messaging system.
+It would provide messaging without any central server coordinating the
+system and without requiring all users to register a phone number or
+own a mobile phone. Back then, I could not get it to work, and put it
+aside until it had seen more development. A few days ago I decided to
+give it another try, and am happy to report that this time I am able
+to not only send and receive messages, but also place audio and video
+calls. But only if UDP is not blocked into your network.</p>
+
+<p>The Ring system changed name earlier this year to
+<a href="https://en.wikipedia.org/wiki/Jami_(software)">Jami</a>. I
+tried doing web search for 'ring' when I discovered it for the first
+time, and can only applaud this change as it is impossible to find
+something called Ring among the noise of other uses of that word. Now
+you can search for 'jami' and this client and
+<a href="https://jami.net/">the Jami system</a> is the first hit at
+least on duckduckgo.</p>
+
+<p>Jami will by default encrypt messages as well as audio and video
+calls, and try to send them directly between the communicating parties
+if possible. If this proves impossible (for example if both ends are
+behind NAT), it will use a central SIP TURN server maintained by the
+Jami project. Jami can also be a normal SIP client. If the SIP
+server is unencrypted, the audio and video calls will also be
+unencrypted. This is as far as I know the only case where Jami will
+do anything without encryption.</p>
+
+<p>Jami is available for several platforms: Linux, Windows, MacOSX,
+Android, iOS, and Android TV. It is included in Debian already. Jami
+also work for those using F-Droid without any Google connections,
+while Signal do not.
+<a href="https://git.jami.net/savoirfairelinux/ring-project/wikis/technical/Protocol">The
+protocol</a> is described in the Ring project wiki. The system uses a
+distributed hash table (DHT) system (similar to BitTorrent) running
+over UDP. On one of the networks I use, I discovered Jami failed to
+work. I tracked this down to the fact that incoming UDP packages
+going to ports 1-49999 were blocked, and the DHT would pick a random
+port and end up in the low range most of the time. After talking to
+the developers, I solved this by enabling the dhtproxy in the
+settings, thus using TCP to talk to a central DHT proxy instead of
+
+peering directly with others. I've been told the developers are
+working on allowing DHT to use TCP to avoid this problem. I also ran
+into a problem when trying to talk to the version of Ring included in
+Debian Stable (Stretch). Apparently the protocol changed between
+beta2 and the current version, making these clients incompatible.
+Hopefully the protocol will not be made incompatible in the
+future.</p>
+
+<p>It is worth noting that while looking at Jami and its features, I
+came across another communication platform I have not tested yet. The
+<a href="https://en.wikipedia.org/wiki/Tox_(protocol)">Tox protocol</a>
+and <a href="https://tox.chat/">family of Tox clients</a>. It might
+become the topic of a future blog post.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
</item>
<item>
- <title>Legal to share more than 3000 movies listed on IMDB?</title>
- <link>http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_3000_movies_listed_on_IMDB_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_3000_movies_listed_on_IMDB_.html</guid>
- <pubDate>Sat, 18 Nov 2017 21:20:00 +0100</pubDate>
- <description><p>A month ago, I blogged about my work to
-<a href="http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html">automatically
-check the copyright status of IMDB entries</a>, and try to count the
-number of movies listed in IMDB that is legal to distribute on the
-Internet. I have continued to look for good data sources, and
-identified a few more. The code used to extract information from
-various data sources is available in
-<a href="https://github.com/petterreinholdtsen/public-domain-free-imdb">a
-git repository</a>, currently available from github.</p>
-
-<p>So far I have identified 3186 unique IMDB title IDs. To gain
-better understanding of the structure of the data set, I created a
-histogram of the year associated with each movie (typically release
-year). It is interesting to notice where the peaks and dips in the
-graph are located. I wonder why they are placed there. I suspect
-World War II caused the dip around 1940, but what caused the peak
-around 2010?</p>
-
-<p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2017-11-18-verk-i-det-fri-filmer.png" /></p>
-
-<p>I've so far identified ten sources for IMDB title IDs for movies in
-the public domain or with a free license. This is the statistics
-reported when running 'make stats' in the git repository:</p>
-
-<pre>
- 249 entries ( 6 unique) with and 288 without IMDB title ID in free-movies-archive-org-butter.json
- 2301 entries ( 540 unique) with and 0 without IMDB title ID in free-movies-archive-org-wikidata.json
- 830 entries ( 29 unique) with and 0 without IMDB title ID in free-movies-icheckmovies-archive-mochard.json
- 2109 entries ( 377 unique) with and 0 without IMDB title ID in free-movies-imdb-pd.json
- 291 entries ( 122 unique) with and 0 without IMDB title ID in free-movies-letterboxd-pd.json
- 144 entries ( 135 unique) with and 0 without IMDB title ID in free-movies-manual.json
- 350 entries ( 1 unique) with and 801 without IMDB title ID in free-movies-publicdomainmovies.json
- 4 entries ( 0 unique) with and 124 without IMDB title ID in free-movies-publicdomainreview.json
- 698 entries ( 119 unique) with and 118 without IMDB title ID in free-movies-publicdomaintorrents.json
- 8 entries ( 8 unique) with and 196 without IMDB title ID in free-movies-vodo.json
- 3186 unique IMDB title IDs in total
-</pre>
-
-<p>The entries without IMDB title ID are candidates to increase the
-data set, but might equally well be duplicates of entries already
-listed with IMDB title ID in one of the other sources, or represent
-movies that lack a IMDB title ID. I've seen examples of all these
-situations when peeking at the entries without IMDB title ID. Based
-on these data sources, the lower bound for movies listed in IMDB that
-are legal to distribute on the Internet is between 3186 and 4713.
-
-<p>It would be great for improving the accuracy of this measurement,
-if the various sources added IMDB title ID to their metadata. I have
-tried to reach the people behind the various sources to ask if they
-are interested in doing this, without any replies so far. Perhaps you
-can help me get in touch with the people behind VODO, Public Domain
-Torrents, Public Domain Movies and Public Domain Review to try to
-convince them to add more metadata to their movie entries?</p>
-
-<p>Another way you could help is by adding pages to Wikipedia about
-movies that are legal to distribute on the Internet. If such page
-exist and include a link to both IMDB and The Internet Archive, the
-script used to generate free-movies-archive-org-wikidata.json should
-pick up the mapping as soon as wikidata is updates.</p>
-
-<p>As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+ <title>More sales number for my Free Culture paper editions (2019-edition)</title>
+ <link>http://people.skolelinux.org/pere/blog/More_sales_number_for_my_Free_Culture_paper_editions__2019_edition_.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/More_sales_number_for_my_Free_Culture_paper_editions__2019_edition_.html</guid>
+ <pubDate>Tue, 11 Jun 2019 16:05:00 +0200</pubDate>
+ <description><p>The first book I published,
+<a href="http://www.free-culture.cc/">Free Culture by Lawrence
+Lessig</a>, is still selling a few copies. Not a lot, but enough to
+have contributed slightly over $500 to the <a
+href="https://creativecommons.org/">Creative Commons Corporation</a>
+so far. All the profit is sent there. Most books are still sold via
+Amazon (83 copies), with Ingram second (49) and Lulu (12) and Machette (7) as
+minor channels. Bying directly from Lulu bring the largest cut to
+Creative Commons. The English Edition sold 80 copies so far, the
+French 59 copies, and Norwegian only 8 copies. Nothing impressive,
+but nice to see the work we put down is still being appreciated. The
+ebook edition is available for free from
+<a href="https://github.com/petterreinholdtsen/free-culture-lessig">Github</a>.</p>
+
+<table border="0">
+<tr><th rowspan="2" valign="bottom">Title / language</th>
+<th colspan="7">Quantity</th></tr>
+<tr>
+<th>2016 jan-jun</th>
+<th>2016 jul-dec</th>
+<th>2017 jan-jun</th>
+<th>2017 jul-dec</th>
+<th>2018 jan-jun</th>
+<th>2018 jul-dec</th>
+<th>2019 jan-may</th>
+</tr>
+
+<tr>
+ <td><a href="http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html">Culture Libre / French</a></td>
+ <td align="right">3</td>
+ <td align="right">6</td>
+ <td align="right">19</td>
+ <td align="right">11</td>
+ <td align="right">7</td>
+ <td align="right">6</td>
+ <td align="right">7</td>
+</tr>
+
+<tr>
+ <td><a href="http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html">Fri kultur / Norwegian</a></td>
+ <td align="right">7</td>
+ <td align="right">1</td>
+ <td align="right">0</td>
+ <td align="right">0</td>
+ <td align="right">0</td>
+ <td align="right">0</td>
+ <td align="right">0</td>
+</tr>
+
+<tr>
+ <td><a href="http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html">Free Culture / English</a></td>
+ <td align="right">14</td>
+ <td align="right">27</td>
+ <td align="right">16</td>
+ <td align="right">9</td>
+ <td align="right">3</td>
+ <td align="right">7</td>
+ <td align="right">3</td>
+</tr>
+
+<tr>
+ <td>Total</td>
+ <td align="right">24</td>
+ <td align="right">34</td>
+ <td align="right">35</td>
+ <td align="right">20</td>
+ <td align="right">10</td>
+ <td align="right">13</td>
+ <td align="right">10</td>
+</tr>
+
+</table>
+
+<p>It is fun to see the French edition being more popular than the
+English one.</p>
+
+<p>If you would like to translate and publish the book in your native
+language, I would be happy to help make it happen. Please get in
+touch.</p>
</description>
</item>
<item>
- <title>Some notes on fault tolerant storage systems</title>
- <link>http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html</guid>
- <pubDate>Wed, 1 Nov 2017 15:35:00 +0100</pubDate>
- <description><p>If you care about how fault tolerant your storage is, you might
-find these articles and papers interesting. They have formed how I
-think of when designing a storage system.</p>
-
-<ul>
-
-<li>USENIX :login; <a
-href="https://www.usenix.org/publications/login/summer2017/ganesan">Redundancy
-Does Not Imply Fault Tolerance. Analysis of Distributed Storage
-Reactions to Single Errors and Corruptions</a> by Aishwarya Ganesan,
-Ramnatthan Alagappan, Andrea C. Arpaci-Dusseau, and Remzi
-H. Arpaci-Dusseau</li>
-
-<li>ZDNet
-<a href="http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/">Why
-RAID 5 stops working in 2009</a> by Robin Harris</li>
-
-<li>ZDNet
-<a href="http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/">Why
-RAID 6 stops working in 2019</a> by Robin Harris</li>
-
-<li>USENIX FAST'07
-<a href="http://research.google.com/archive/disk_failures.pdf">Failure
-Trends in a Large Disk Drive Population</a> by Eduardo Pinheiro,
-Wolf-Dietrich Weber and Luiz André Barroso</li>
-
-<li>USENIX ;login: <a
-href="https://www.usenix.org/system/files/login/articles/hughes12-04.pdf">Data
-Integrity. Finding Truth in a World of Guesses and Lies</a> by Doug
-Hughes</li>
-
-<li>USENIX FAST'08
-<a href="https://www.usenix.org/events/fast08/tech/full_papers/bairavasundaram/bairavasundaram_html/">An
-Analysis of Data Corruption in the Storage Stack</a> by
-L. N. Bairavasundaram, G. R. Goodson, B. Schroeder, A. C.
-Arpaci-Dusseau, and R. H. Arpaci-Dusseau</li>
-
-<li>USENIX FAST'07 <a
-href="https://www.usenix.org/legacy/events/fast07/tech/schroeder/schroeder_html/">Disk
-failures in the real world: what does an MTTF of 1,000,000 hours mean
-to you?</a> by B. Schroeder and G. A. Gibson.</li>
-
-<li>USENIX ;login: <a
-href="https://www.usenix.org/events/fast08/tech/full_papers/jiang/jiang_html/">Are
-Disks the Dominant Contributor for Storage Failures? A Comprehensive
-Study of Storage Subsystem Failure Characteristics</a> by Weihang
-Jiang, Chongfeng Hu, Yuanyuan Zhou, and Arkady Kanevsky</li>
-
-<li>SIGMETRICS 2007
-<a href="http://research.cs.wisc.edu/adsl/Publications/latent-sigmetrics07.pdf">An
-analysis of latent sector errors in disk drives</a> by
-L. N. Bairavasundaram, G. R. Goodson, S. Pasupathy, and J. Schindler</li>
-
-</ul>
-
-<p>Several of these research papers are based on data collected from
-hundred thousands or millions of disk, and their findings are eye
-opening. The short story is simply do not implicitly trust RAID or
-redundant storage systems. Details matter. And unfortunately there
-are few options on Linux addressing all the identified issues. Both
-ZFS and Btrfs are doing a fairly good job, but have legal and
-practical issues on their own. I wonder how cluster file systems like
-Ceph do in this regard. After all, there is an old saying, you know
-you have a distributed system when the crash of a computer you have
-never heard of stops you from getting any work done. The same holds
-true if fault tolerance do not work.</p>
-
-<p>Just remember, in the end, it do not matter how redundant, or how
-fault tolerant your storage is, if you do not continuously monitor its
-status to detect and replace failed disks.</p>
+ <title>Official MIME type "text/vnd.sosi" for SOSI map data</title>
+ <link>http://people.skolelinux.org/pere/blog/Official_MIME_type__text_vnd_sosi__for_SOSI_map_data.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Official_MIME_type__text_vnd_sosi__for_SOSI_map_data.html</guid>
+ <pubDate>Tue, 4 Jun 2019 09:20:00 +0200</pubDate>
+ <description><p>Just 15 days ago,
+<ahref="http://people.skolelinux.org/pere/blog/MIME_type__text_vnd_sosi__for_SOSI_map_data.html">I
+mentioned</a> my submission to IANA to register an official MIME type
+for the SOSI vector map format. This morning, just an hour ago, I was
+notified that
+<a href="https://www.iana.org/assignments/media-types/text/vnd.sosi">the
+MIME type "text/vnd.sosi"</a> is registered for this format. In
+addition to this registration, my
+<a href="https://github.com/file/file/blob/master/magic/Magdir/sosi">file(1)
+patch for a pattern matching rule for SOSI files</a> has been accepted
+into the official source of that program (pending a new release), and
+I've been told by the team behind
+<a href="https://www.nationalarchives.gov.uk/PRONOM/">PRONOM</a> that
+the SOSI format will be included in the next release of PRONOM, which
+they plan to release this summer around July.</p>
+
+<p>I am very happy to see all of this fall into place, for use by
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/">the
+Noark 5 Tjenestegrensesnitt</a> implementations.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
</item>
<item>
- <title>Web services for writing academic LaTeX papers as a team</title>
- <link>http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html</guid>
- <pubDate>Tue, 31 Oct 2017 21:00:00 +0100</pubDate>
- <description><p>I was surprised today to learn that a friend in academia did not
-know there are easily available web services available for writing
-LaTeX documents as a team. I thought it was common knowledge, but to
-make sure at least my readers are aware of it, I would like to mention
-these useful services for writing LaTeX documents. Some of them even
-provide a WYSIWYG editor to ease writing even further.</p>
-
-<p>There are two commercial services available,
-<a href="https://sharelatex.com">ShareLaTeX</a> and
-<a href="https://overleaf.com">Overleaf</a>. They are very easy to
-use. Just start a new document, select which publisher to write for
-(ie which LaTeX style to use), and start writing. Note, these two
-have announced their intention to join forces, so soon it will only be
-one joint service. I've used both for different documents, and they
-work just fine. While
-<a href="https://github.com/sharelatex/sharelatex">ShareLaTeX is free
-software</a>, while the latter is not. According to <a
-href="https://www.overleaf.com/help/17-is-overleaf-open-source">a
-announcement from Overleaf</a>, they plan to keep the ShareLaTeX code
-base maintained as free software.</p>
-
-But these two are not the only alternatives.
-<a href="https://app.fiduswriter.org/">Fidus Writer</a> is another free
-software solution with <a href="https://github.com/fiduswriter">the
-source available on github</a>. I have not used it myself. Several
-others can be found on the nice
-<a href="https://alternativeto.net/software/sharelatex/">alterntiveTo
-web service</a>.
-
-<p>If you like Google Docs or Etherpad, but would like to write
-documents in LaTeX, you should check out these services. You can even
-host your own, if you want to. :)</p>
+ <title>The space rover coquine, or how I ended up on the dark side of the moon</title>
+ <link>http://people.skolelinux.org/pere/blog/The_space_rover_coquine__or_how_I_ended_up_on_the_dark_side_of_the_moon.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_space_rover_coquine__or_how_I_ended_up_on_the_dark_side_of_the_moon.html</guid>
+ <pubDate>Sun, 2 Jun 2019 23:55:00 +0200</pubDate>
+ <description><p>A while back a college and friend from Debian and the Skolelinux /
+Debian Edu project approached me, asking if I knew someone that might
+be interested in helping out with a technology project he was running
+as a teacher at <a href="https://www.ecolefrancodanoise.dk/">L'école
+franco-danoise</a> - the Danish-French school and kindergarden. The
+kids were building robots, rovers. The story behind it is to build a
+rover for use
+<a href="http://blog.ecolefrancodanoise.dk/first-week-on-the-dark-side">on
+the dark side of the moon</a>, and remote control it. As travel cost
+was a bit high for the final destination, and they wanted to test the
+concept first, he was looking for volunteers to host a rover for the
+kids to control in a foreign country. I ended up volunteering as a
+host, and last week the rover arrived. It took a while to arrive
+after <a href="http://blog.ecolefrancodanoise.dk/model-moms">it was
+built and shipped</a>, because of customs confusion. Luckily we were
+able fix it quickly with help from my colleges at work.</p>
+
+<p>This is what it looked like when the rover arrived. Note the cute
+eyes looking up on me from the wrapping</p>
+
+<img src="http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-esken-med-det-rare-i.jpeg" width="32%" style="clear:left"/>
+<img src="http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-den-ser-meg.jpeg" width="32%" style="clear:left"/>
+<img src="http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-en-skrue-loes.jpeg" width="32%" style="clear:left"/>
+
+<p style="text-align:left">Once the robot arrived, we needed to track
+down batteries and figure out how to build custom firmware for it with
+the appropriate wifi settings. I asked a friend if I could get two
+18650 batteries from his pile of Tesla batteries (he had them from the
+wrack of a crashed Tesla), so now the rover is running on Tesla
+batteries.</p>
+
+<p>Building
+<a href="https://gitlab.com/ecolefrancodanoise/arduino-efd/">the rover
+firmware</a> proved a bit harder, as the code did not work out of the
+box with the Arduino IDE package in Debian Buster. I suspect this is
+due to a unsolved
+<a href="https://github.com/arduino/Arduino/pull/2703"> license problem
+with arduino</a> blocking Debian from upgrading to the latest version.
+In the end we gave up debugging why the IDE failed to find the
+required libraries, and ended up using the Arduino Makefile from the
+<a href="https://tracker.debian.org/pkg/arduino-mk">arduino-mk Debian
+package</a> instead. Unfortunately the camera library is missing from
+the Arduino environment in Debian, so we disabled the camera support
+for the first firmware build, to get something up and running. With
+this reduced firmware, the robot could be controlled via the
+controller server, driving around and measuring distance using its
+internal acoustic sensor.</p>
+
+<p>Next, With some help from my friend in Denmark, which checked in the
+camera library into the gitlab repository for me to use, we were able
+to build a new and more complete version of the firmware, and the
+robot is now up and running. This is what the "commander" web page
+look like after taking a measurement and a snapshot:</p>
+
+<img src="http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-commander.png" width="40%" border="1" align="center"/>
+
+<p>If you want to learn more about this project, you can check out the
+<a href="https://hackaday.io/project/164082-the-dark-side-challenge">The
+Dark Side Challenge</a> Hackaday web pages.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
</item>
<item>
- <title>Locating IMDB IDs of movies in the Internet Archive using Wikidata</title>
- <link>http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html</guid>
- <pubDate>Wed, 25 Oct 2017 12:20:00 +0200</pubDate>
- <description><p>Recently, I needed to automatically check the copyright status of a
-set of <a href="http://www.imdb.com/">The Internet Movie database
-(IMDB)</a> entries, to figure out which one of the movies they refer
-to can be freely distributed on the Internet. This proved to be
-harder than it sounds. IMDB for sure list movies without any
-copyright protection, where the copyright protection has expired or
-where the movie is lisenced using a permissive license like one from
-Creative Commons. These are mixed with copyright protected movies,
-and there seem to be no way to separate these classes of movies using
-the information in IMDB.</p>
-
-<p>First I tried to look up entries manually in IMDB,
-<a href="https://www.wikipedia.org/">Wikipedia</a> and
-<a href="https://www.archive.org/">The Internet Archive</a>, to get a
-feel how to do this. It is hard to know for sure using these sources,
-but it should be possible to be reasonable confident a movie is "out
-of copyright" with a few hours work per movie. As I needed to check
-almost 20,000 entries, this approach was not sustainable. I simply
-can not work around the clock for about 6 years to check this data
-set.</p>
-
-<p>I asked the people behind The Internet Archive if they could
-introduce a new metadata field in their metadata XML for IMDB ID, but
-was told that they leave it completely to the uploaders to update the
-metadata. Some of the metadata entries had IMDB links in the
-description, but I found no way to download all metadata files in bulk
-to locate those ones and put that approach aside.</p>
-
-<p>In the process I noticed several Wikipedia articles about movies
-had links to both IMDB and The Internet Archive, and it occured to me
-that I could use the Wikipedia RDF data set to locate entries with
-both, to at least get a lower bound on the number of movies on The
-Internet Archive with a IMDB ID. This is useful based on the
-assumption that movies distributed by The Internet Archive can be
-legally distributed on the Internet. With some help from the RDF
-community (thank you DanC), I was able to come up with this query to
-pass to <a href="https://query.wikidata.org/">the SPARQL interface on
-Wikidata</a>:
-
-<p><pre>
-SELECT ?work ?imdb ?ia ?when ?label
-WHERE
-{
- ?work wdt:P31/wdt:P279* wd:Q11424.
- ?work wdt:P345 ?imdb.
- ?work wdt:P724 ?ia.
- OPTIONAL {
- ?work wdt:P577 ?when.
- ?work rdfs:label ?label.
- FILTER(LANG(?label) = "en").
- }
-}
-</pre></p>
-
-<p>If I understand the query right, for every film entry anywhere in
-Wikpedia, it will return the IMDB ID and The Internet Archive ID, and
-when the movie was released and its English title, if either or both
-of the latter two are available. At the moment the result set contain
-2338 entries. Of course, it depend on volunteers including both
-correct IMDB and The Internet Archive IDs in the wikipedia articles
-for the movie. It should be noted that the result will include
-duplicates if the movie have entries in several languages. There are
-some bogus entries, either because The Internet Archive ID contain a
-typo or because the movie is not available from The Internet Archive.
-I did not verify the IMDB IDs, as I am unsure how to do that
-automatically.</p>
-
-<p>I wrote a small python script to extract the data set from Wikidata
-and check if the XML metadata for the movie is available from The
-Internet Archive, and after around 1.5 hour it produced a list of 2097
-free movies and their IMDB ID. In total, 171 entries in Wikidata lack
-the refered Internet Archive entry. I assume the 70 "disappearing"
-entries (ie 2338-2097-171) are duplicate entries.</p>
-
-<p>This is not too bad, given that The Internet Archive report to
-contain <a href="https://archive.org/details/feature_films">5331
-feature films</a> at the moment, but it also mean more than 3000
-movies are missing on Wikipedia or are missing the pair of references
-on Wikipedia.</p>
-
-<p>I was curious about the distribution by release year, and made a
-little graph to show how the amount of free movies is spread over the
-years:<p>
-
-<p><img src="http://people.skolelinux.org/pere/blog/images/2017-10-25-verk-i-det-fri-filmer.png"></p>
-
-<p>I expect the relative distribution of the remaining 3000 movies to
-be similar.</p>
-
-<p>If you want to help, and want to ensure Wikipedia can be used to
-cross reference The Internet Archive and The Internet Movie Database,
-please make sure entries like this are listed under the "External
-links" heading on the Wikipedia article for the movie:</p>
-
-<p><pre>
-* {{Internet Archive film|id=FightingLady}}
-* {{IMDb title|id=0036823|title=The Fighting Lady}}
-</pre></p>
-
-<p>Please verify the links on the final page, to make sure you did not
-introduce a typo.</p>
-
-<p>Here is the complete list, if you want to correct the 171
-identified Wikipedia entries with broken links to The Internet
-Archive: <a href="http://www.wikidata.org/entity/Q1140317">Q1140317</a>,
-<a href="http://www.wikidata.org/entity/Q458656">Q458656</a>,
-<a href="http://www.wikidata.org/entity/Q458656">Q458656</a>,
-<a href="http://www.wikidata.org/entity/Q470560">Q470560</a>,
-<a href="http://www.wikidata.org/entity/Q743340">Q743340</a>,
-<a href="http://www.wikidata.org/entity/Q822580">Q822580</a>,
-<a href="http://www.wikidata.org/entity/Q480696">Q480696</a>,
-<a href="http://www.wikidata.org/entity/Q128761">Q128761</a>,
-<a href="http://www.wikidata.org/entity/Q1307059">Q1307059</a>,
-<a href="http://www.wikidata.org/entity/Q1335091">Q1335091</a>,
-<a href="http://www.wikidata.org/entity/Q1537166">Q1537166</a>,
-<a href="http://www.wikidata.org/entity/Q1438334">Q1438334</a>,
-<a href="http://www.wikidata.org/entity/Q1479751">Q1479751</a>,
-<a href="http://www.wikidata.org/entity/Q1497200">Q1497200</a>,
-<a href="http://www.wikidata.org/entity/Q1498122">Q1498122</a>,
-<a href="http://www.wikidata.org/entity/Q865973">Q865973</a>,
-<a href="http://www.wikidata.org/entity/Q834269">Q834269</a>,
-<a href="http://www.wikidata.org/entity/Q841781">Q841781</a>,
-<a href="http://www.wikidata.org/entity/Q841781">Q841781</a>,
-<a href="http://www.wikidata.org/entity/Q1548193">Q1548193</a>,
-<a href="http://www.wikidata.org/entity/Q499031">Q499031</a>,
-<a href="http://www.wikidata.org/entity/Q1564769">Q1564769</a>,
-<a href="http://www.wikidata.org/entity/Q1585239">Q1585239</a>,
-<a href="http://www.wikidata.org/entity/Q1585569">Q1585569</a>,
-<a href="http://www.wikidata.org/entity/Q1624236">Q1624236</a>,
-<a href="http://www.wikidata.org/entity/Q4796595">Q4796595</a>,
-<a href="http://www.wikidata.org/entity/Q4853469">Q4853469</a>,
-<a href="http://www.wikidata.org/entity/Q4873046">Q4873046</a>,
-<a href="http://www.wikidata.org/entity/Q915016">Q915016</a>,
-<a href="http://www.wikidata.org/entity/Q4660396">Q4660396</a>,
-<a href="http://www.wikidata.org/entity/Q4677708">Q4677708</a>,
-<a href="http://www.wikidata.org/entity/Q4738449">Q4738449</a>,
-<a href="http://www.wikidata.org/entity/Q4756096">Q4756096</a>,
-<a href="http://www.wikidata.org/entity/Q4766785">Q4766785</a>,
-<a href="http://www.wikidata.org/entity/Q880357">Q880357</a>,
-<a href="http://www.wikidata.org/entity/Q882066">Q882066</a>,
-<a href="http://www.wikidata.org/entity/Q882066">Q882066</a>,
-<a href="http://www.wikidata.org/entity/Q204191">Q204191</a>,
-<a href="http://www.wikidata.org/entity/Q204191">Q204191</a>,
-<a href="http://www.wikidata.org/entity/Q1194170">Q1194170</a>,
-<a href="http://www.wikidata.org/entity/Q940014">Q940014</a>,
-<a href="http://www.wikidata.org/entity/Q946863">Q946863</a>,
-<a href="http://www.wikidata.org/entity/Q172837">Q172837</a>,
-<a href="http://www.wikidata.org/entity/Q573077">Q573077</a>,
-<a href="http://www.wikidata.org/entity/Q1219005">Q1219005</a>,
-<a href="http://www.wikidata.org/entity/Q1219599">Q1219599</a>,
-<a href="http://www.wikidata.org/entity/Q1643798">Q1643798</a>,
-<a href="http://www.wikidata.org/entity/Q1656352">Q1656352</a>,
-<a href="http://www.wikidata.org/entity/Q1659549">Q1659549</a>,
-<a href="http://www.wikidata.org/entity/Q1660007">Q1660007</a>,
-<a href="http://www.wikidata.org/entity/Q1698154">Q1698154</a>,
-<a href="http://www.wikidata.org/entity/Q1737980">Q1737980</a>,
-<a href="http://www.wikidata.org/entity/Q1877284">Q1877284</a>,
-<a href="http://www.wikidata.org/entity/Q1199354">Q1199354</a>,
-<a href="http://www.wikidata.org/entity/Q1199354">Q1199354</a>,
-<a href="http://www.wikidata.org/entity/Q1199451">Q1199451</a>,
-<a href="http://www.wikidata.org/entity/Q1211871">Q1211871</a>,
-<a href="http://www.wikidata.org/entity/Q1212179">Q1212179</a>,
-<a href="http://www.wikidata.org/entity/Q1238382">Q1238382</a>,
-<a href="http://www.wikidata.org/entity/Q4906454">Q4906454</a>,
-<a href="http://www.wikidata.org/entity/Q320219">Q320219</a>,
-<a href="http://www.wikidata.org/entity/Q1148649">Q1148649</a>,
-<a href="http://www.wikidata.org/entity/Q645094">Q645094</a>,
-<a href="http://www.wikidata.org/entity/Q5050350">Q5050350</a>,
-<a href="http://www.wikidata.org/entity/Q5166548">Q5166548</a>,
-<a href="http://www.wikidata.org/entity/Q2677926">Q2677926</a>,
-<a href="http://www.wikidata.org/entity/Q2698139">Q2698139</a>,
-<a href="http://www.wikidata.org/entity/Q2707305">Q2707305</a>,
-<a href="http://www.wikidata.org/entity/Q2740725">Q2740725</a>,
-<a href="http://www.wikidata.org/entity/Q2024780">Q2024780</a>,
-<a href="http://www.wikidata.org/entity/Q2117418">Q2117418</a>,
-<a href="http://www.wikidata.org/entity/Q2138984">Q2138984</a>,
-<a href="http://www.wikidata.org/entity/Q1127992">Q1127992</a>,
-<a href="http://www.wikidata.org/entity/Q1058087">Q1058087</a>,
-<a href="http://www.wikidata.org/entity/Q1070484">Q1070484</a>,
-<a href="http://www.wikidata.org/entity/Q1080080">Q1080080</a>,
-<a href="http://www.wikidata.org/entity/Q1090813">Q1090813</a>,
-<a href="http://www.wikidata.org/entity/Q1251918">Q1251918</a>,
-<a href="http://www.wikidata.org/entity/Q1254110">Q1254110</a>,
-<a href="http://www.wikidata.org/entity/Q1257070">Q1257070</a>,
-<a href="http://www.wikidata.org/entity/Q1257079">Q1257079</a>,
-<a href="http://www.wikidata.org/entity/Q1197410">Q1197410</a>,
-<a href="http://www.wikidata.org/entity/Q1198423">Q1198423</a>,
-<a href="http://www.wikidata.org/entity/Q706951">Q706951</a>,
-<a href="http://www.wikidata.org/entity/Q723239">Q723239</a>,
-<a href="http://www.wikidata.org/entity/Q2079261">Q2079261</a>,
-<a href="http://www.wikidata.org/entity/Q1171364">Q1171364</a>,
-<a href="http://www.wikidata.org/entity/Q617858">Q617858</a>,
-<a href="http://www.wikidata.org/entity/Q5166611">Q5166611</a>,
-<a href="http://www.wikidata.org/entity/Q5166611">Q5166611</a>,
-<a href="http://www.wikidata.org/entity/Q324513">Q324513</a>,
-<a href="http://www.wikidata.org/entity/Q374172">Q374172</a>,
-<a href="http://www.wikidata.org/entity/Q7533269">Q7533269</a>,
-<a href="http://www.wikidata.org/entity/Q970386">Q970386</a>,
-<a href="http://www.wikidata.org/entity/Q976849">Q976849</a>,
-<a href="http://www.wikidata.org/entity/Q7458614">Q7458614</a>,
-<a href="http://www.wikidata.org/entity/Q5347416">Q5347416</a>,
-<a href="http://www.wikidata.org/entity/Q5460005">Q5460005</a>,
-<a href="http://www.wikidata.org/entity/Q5463392">Q5463392</a>,
-<a href="http://www.wikidata.org/entity/Q3038555">Q3038555</a>,
-<a href="http://www.wikidata.org/entity/Q5288458">Q5288458</a>,
-<a href="http://www.wikidata.org/entity/Q2346516">Q2346516</a>,
-<a href="http://www.wikidata.org/entity/Q5183645">Q5183645</a>,
-<a href="http://www.wikidata.org/entity/Q5185497">Q5185497</a>,
-<a href="http://www.wikidata.org/entity/Q5216127">Q5216127</a>,
-<a href="http://www.wikidata.org/entity/Q5223127">Q5223127</a>,
-<a href="http://www.wikidata.org/entity/Q5261159">Q5261159</a>,
-<a href="http://www.wikidata.org/entity/Q1300759">Q1300759</a>,
-<a href="http://www.wikidata.org/entity/Q5521241">Q5521241</a>,
-<a href="http://www.wikidata.org/entity/Q7733434">Q7733434</a>,
-<a href="http://www.wikidata.org/entity/Q7736264">Q7736264</a>,
-<a href="http://www.wikidata.org/entity/Q7737032">Q7737032</a>,
-<a href="http://www.wikidata.org/entity/Q7882671">Q7882671</a>,
-<a href="http://www.wikidata.org/entity/Q7719427">Q7719427</a>,
-<a href="http://www.wikidata.org/entity/Q7719444">Q7719444</a>,
-<a href="http://www.wikidata.org/entity/Q7722575">Q7722575</a>,
-<a href="http://www.wikidata.org/entity/Q2629763">Q2629763</a>,
-<a href="http://www.wikidata.org/entity/Q2640346">Q2640346</a>,
-<a href="http://www.wikidata.org/entity/Q2649671">Q2649671</a>,
-<a href="http://www.wikidata.org/entity/Q7703851">Q7703851</a>,
-<a href="http://www.wikidata.org/entity/Q7747041">Q7747041</a>,
-<a href="http://www.wikidata.org/entity/Q6544949">Q6544949</a>,
-<a href="http://www.wikidata.org/entity/Q6672759">Q6672759</a>,
-<a href="http://www.wikidata.org/entity/Q2445896">Q2445896</a>,
-<a href="http://www.wikidata.org/entity/Q12124891">Q12124891</a>,
-<a href="http://www.wikidata.org/entity/Q3127044">Q3127044</a>,
-<a href="http://www.wikidata.org/entity/Q2511262">Q2511262</a>,
-<a href="http://www.wikidata.org/entity/Q2517672">Q2517672</a>,
-<a href="http://www.wikidata.org/entity/Q2543165">Q2543165</a>,
-<a href="http://www.wikidata.org/entity/Q426628">Q426628</a>,
-<a href="http://www.wikidata.org/entity/Q426628">Q426628</a>,
-<a href="http://www.wikidata.org/entity/Q12126890">Q12126890</a>,
-<a href="http://www.wikidata.org/entity/Q13359969">Q13359969</a>,
-<a href="http://www.wikidata.org/entity/Q13359969">Q13359969</a>,
-<a href="http://www.wikidata.org/entity/Q2294295">Q2294295</a>,
-<a href="http://www.wikidata.org/entity/Q2294295">Q2294295</a>,
-<a href="http://www.wikidata.org/entity/Q2559509">Q2559509</a>,
-<a href="http://www.wikidata.org/entity/Q2559912">Q2559912</a>,
-<a href="http://www.wikidata.org/entity/Q7760469">Q7760469</a>,
-<a href="http://www.wikidata.org/entity/Q6703974">Q6703974</a>,
-<a href="http://www.wikidata.org/entity/Q4744">Q4744</a>,
-<a href="http://www.wikidata.org/entity/Q7766962">Q7766962</a>,
-<a href="http://www.wikidata.org/entity/Q7768516">Q7768516</a>,
-<a href="http://www.wikidata.org/entity/Q7769205">Q7769205</a>,
-<a href="http://www.wikidata.org/entity/Q7769988">Q7769988</a>,
-<a href="http://www.wikidata.org/entity/Q2946945">Q2946945</a>,
-<a href="http://www.wikidata.org/entity/Q3212086">Q3212086</a>,
-<a href="http://www.wikidata.org/entity/Q3212086">Q3212086</a>,
-<a href="http://www.wikidata.org/entity/Q18218448">Q18218448</a>,
-<a href="http://www.wikidata.org/entity/Q18218448">Q18218448</a>,
-<a href="http://www.wikidata.org/entity/Q18218448">Q18218448</a>,
-<a href="http://www.wikidata.org/entity/Q6909175">Q6909175</a>,
-<a href="http://www.wikidata.org/entity/Q7405709">Q7405709</a>,
-<a href="http://www.wikidata.org/entity/Q7416149">Q7416149</a>,
-<a href="http://www.wikidata.org/entity/Q7239952">Q7239952</a>,
-<a href="http://www.wikidata.org/entity/Q7317332">Q7317332</a>,
-<a href="http://www.wikidata.org/entity/Q7783674">Q7783674</a>,
-<a href="http://www.wikidata.org/entity/Q7783704">Q7783704</a>,
-<a href="http://www.wikidata.org/entity/Q7857590">Q7857590</a>,
-<a href="http://www.wikidata.org/entity/Q3372526">Q3372526</a>,
-<a href="http://www.wikidata.org/entity/Q3372642">Q3372642</a>,
-<a href="http://www.wikidata.org/entity/Q3372816">Q3372816</a>,
-<a href="http://www.wikidata.org/entity/Q3372909">Q3372909</a>,
-<a href="http://www.wikidata.org/entity/Q7959649">Q7959649</a>,
-<a href="http://www.wikidata.org/entity/Q7977485">Q7977485</a>,
-<a href="http://www.wikidata.org/entity/Q7992684">Q7992684</a>,
-<a href="http://www.wikidata.org/entity/Q3817966">Q3817966</a>,
-<a href="http://www.wikidata.org/entity/Q3821852">Q3821852</a>,
-<a href="http://www.wikidata.org/entity/Q3420907">Q3420907</a>,
-<a href="http://www.wikidata.org/entity/Q3429733">Q3429733</a>,
-<a href="http://www.wikidata.org/entity/Q774474">Q774474</a></p>
+ <title>Nikita version 0.4 released - free software archive API server</title>
+ <link>http://people.skolelinux.org/pere/blog/Nikita_version_0_4_released___free_software_archive_API_server.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Nikita_version_0_4_released___free_software_archive_API_server.html</guid>
+ <pubDate>Wed, 22 May 2019 11:30:00 +0200</pubDate>
+ <description><p>This morning, a new release of
+<a href="https://gitlab.com/OsloMet-ABI/nikita-noark5-core/">Nikita
+Noark 5 core project</a> was
+<a href="https://lists.nuug.no/pipermail/nikita-noark/2019-May/000468.html">announced
+on the project mailing list</a>. The Nikita free software solution is
+an implementation of the Norwegian archive standard Noark 5 used by
+government offices in Norway. These were the changes in version 0.4
+since version 0.3, see the email link above for links to a demo site:</p>
+
+<ul>
+
+ <li>Roll out OData handling to all endpoints where applicable</li>
+ <li>Changed the relation key for "ny-journalpost" to the official one.</li>
+ <li>Better link generation on outgoing links.</li>
+ <li>Tidy up code and make code and approaches more consistent throughout
+ the codebase</li>
+ <li>Update rels to be in compliance with updated version in the
+ interface standard</li>
+ <li>Avoid printing links on empty objects as they can't have links</li>
+ <li>Small bug fixes and improvements</li>
+ <li>Start moving generation of outgoing links to @Service layer so access
+ control can be used when generating links</li>
+ <li>Log exception that was being swallowed so it's traceable</li>
+ <li>Fix name mapping problem</li>
+ <li>Update templated printing so templated should only be printed if it
+ is set true. Requires more work to roll out across entire
+ application.</li>
+ <li>Remove Record->DocumentObject as per domain model of n5v4</li>
+ <li>Add ability to delete lists filtered with OData</li>
+ <li>Return NO_CONTENT (204) on delete as per interface standard</li>
+ <li>Introduce support for ConstraintViolationException exception</li>
+ <li>Make Service classes extend NoarkService</li>
+ <li>Make code base respect X-Forwarded-Host, X-Forwarded-Proto and
+ X-Forwarded-Port</li>
+ <li>Update CorrespondencePart* code to be more in line with Single
+ Responsibility Principle</li>
+ <li>Make package name follow directory structure</li>
+ <li>Make sure Document number starts at 1, not 0</li>
+ <li>Fix isues discovered by FindBugs</li>
+ <li>Update from Date to ZonedDateTime</li>
+ <li>Fix wrong tablename</li>
+ <li>Introduce Service layer tests</li>
+ <li>Improvements to CorrespondencePart</li>
+ <li>Continued work on Class / Classificationsystem</li>
+ <li>Fix feature where authors were stored as storageLocations</li>
+ <li>Update HQL builder for OData</li>
+ <li>Update OData search capability from webpage</li>
+
+</ul>
+
+<p>If free and open standardized archiving API sound interesting to
+you, please contact us on IRC
+(<a href="irc://irc.freenode.net/%23nikita">#nikita on
+irc.freenode.net</a>) or email
+(<a href="https://lists.nuug.no/mailman/listinfo/nikita-noark">nikita-noark
+mailing list</a>).</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
</item>
<item>
- <title>A one-way wall on the border?</title>
- <link>http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html</guid>
- <pubDate>Sat, 14 Oct 2017 22:10:00 +0200</pubDate>
- <description><p>I find it fascinating how many of the people being locked inside
-the proposed border wall between USA and Mexico support the idea. The
-proposal to keep Mexicans out reminds me of
-<a href="http://www.history.com/news/10-things-you-may-not-know-about-the-berlin-wall">the
-propaganda twist from the East Germany government</a> calling the wall
-the “Antifascist Bulwark” after erecting the Berlin Wall, claiming
-that the wall was erected to keep enemies from creeping into East
-Germany, while it was obvious to the people locked inside it that it
-was erected to keep the people from escaping.</p>
-
-<p>Do the people in USA supporting this wall really believe it is a
-one way wall, only keeping people on the outside from getting in,
-while not keeping people in the inside from getting out?</p>
+ <title>MIME type "text/vnd.sosi" for SOSI map data</title>
+ <link>http://people.skolelinux.org/pere/blog/MIME_type__text_vnd_sosi__for_SOSI_map_data.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/MIME_type__text_vnd_sosi__for_SOSI_map_data.html</guid>
+ <pubDate>Mon, 20 May 2019 08:35:00 +0200</pubDate>
+ <description><p>As part of my involvement in the work to
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard">standardise
+a REST based API for Noark 5</a>, the Norwegian archiving standard, I
+spent some time the last few months to try to register a
+<a href="https://www.iana.org/assignments/media-types/">MIME type</a>
+and <a href="https://www.nationalarchives.gov.uk/PRONOM/">PRONOM
+code</a> for the SOSI file format. The background is that there is a
+set of formats approved for long term storage and archiving in Norway,
+and among these formats, SOSI is the only format missing a MIME type
+and PRONOM code.</p>
+
+<p>What is SOSI, you might ask? To quote Wikipedia: SOSI is short for
+Samordnet Opplegg for Stedfestet Informasjon (literally "Coordinated
+Approach for Spatial Information", but more commonly expanded in
+English to Systematic Organization of Spatial Information). It is a
+text based file format for geo-spatial vector information used in
+Norway. Information about the SOSI format can be found in English
+from <a href="https://en.wikipedia.org/wiki/SOSI">Wikipedia</a>. The
+specification is available in Norwegian from
+<a href="https://www.kartverket.no/geodataarbeid/Standarder/SOSI/">the
+Norwegian mapping authority</a>. The SOSI standard, which originated
+in the beginning of nineteen eighties, was the inspiration and formed the
+basis for the XML based
+<a href="https://en.wikipedia.org/wiki/Geography_Markup_Language">Geography
+Markup Language</a>.</p>
+
+<p>I have so far written
+<a href="https://github.com/file/file/pull/67">a pattern matching
+rule</a> for the file(1) unix tool to recognize SOSI files, submitted
+a request to the PRONOM project to have a PRONOM ID assigned to the
+format (reference TNA1555078202S60), and today send a request to IANA
+to register the "text/vnd.sosi" MIME type for this format (referanse
+<a href="https://tools.iana.org/public-view/viewticket/1143144">IANA
+#1143144</a>). If all goes well, in a few months, anyone implementing
+the Noark 5 Tjenestegrensesnitt API spesification should be able to
+use an official MIME type and PRONOM code for SOSI files. In
+addition, anyone using SOSI files on Linux should be able to
+automatically recognise the format and web sites handing out SOSI
+files can begin providing a more specific MIME type. So far, SOSI
+files has been handed out from web sites using the
+"application/octet-stream" MIME type, which is just a nice way of
+stating "I do not know". Soon, we will know. :)</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
</item>
<item>
- <title>Generating 3D prints in Debian using Cura and Slic3r(-prusa)</title>
- <link>http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html</guid>
- <pubDate>Mon, 9 Oct 2017 10:50:00 +0200</pubDate>
- <description><p>At my nearby maker space,
-<a href="http://sonen.ifi.uio.no/">Sonen</a>, I heard the story that it
-was easier to generate gcode files for theyr 3D printers (Ultimake 2+)
-on Windows and MacOS X than Linux, because the software involved had
-to be manually compiled and set up on Linux while premade packages
-worked out of the box on Windows and MacOS X. I found this annoying,
-as the software involved,
-<a href="https://github.com/Ultimaker/Cura">Cura</a>, is free software
-and should be trivial to get up and running on Linux if someone took
-the time to package it for the relevant distributions. I even found
-<a href="https://bugs.debian.org/706656">a request for adding into
-Debian</a> from 2013, which had seem some activity over the years but
-never resulted in the software showing up in Debian. So a few days
-ago I offered my help to try to improve the situation.</p>
-
-<p>Now I am very happy to see that all the packages required by a
-working Cura in Debian are uploaded into Debian and waiting in the NEW
-queue for the ftpmasters to have a look. You can track the progress
-on
-<a href="https://qa.debian.org/developer.php?email=3dprinter-general%40lists.alioth.debian.org">the
-status page for the 3D printer team</a>.</p>
-
-<p>The uploaded packages are a bit behind upstream, and was uploaded
-now to get slots in <a href="https://ftp-master.debian.org/new.html">the NEW
-queue</a> while we work up updating the packages to the latest
-upstream version.</p>
-
-<p>On a related note, two competitors for Cura, which I found harder
-to use and was unable to configure correctly for Ultimaker 2+ in the
-short time I spent on it, are already in Debian. If you are looking
-for 3D printer "slicers" and want something already available in
-Debian, check out
-<a href="https://tracker.debian.org/pkg/slic3r">slic3r</a> and
-<a href="https://tracker.debian.org/pkg/slic3r-prusa">slic3r-prusa</a>.
-The latter is a fork of the former.</p>
+ <title>PlantUML for text based UML diagram modelling - nice free software</title>
+ <link>http://people.skolelinux.org/pere/blog/PlantUML_for_text_based_UML_diagram_modelling___nice_free_software.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/PlantUML_for_text_based_UML_diagram_modelling___nice_free_software.html</guid>
+ <pubDate>Mon, 25 Mar 2019 09:35:00 +0100</pubDate>
+ <description><p>As part of my involvement with the
+<a href="https://gitlab.com/OsloMet-ABI/nikita-noark5-core/">Nikita
+Noark 5 core project</a>, I have been proposing improvements to the
+API specification created by <a href="https://www.arkivverket.no/">The
+National Archives of Norway</a> and helped migrating the text from a
+version control system unfriendly binary format (docx) to Markdown in
+git. Combined with the migration to a public git repository (on
+github), this has made it possible for anyone to suggest improvement
+to the text.</p>
+
+<p>The specification is filled with UML diagrams. I believe the
+original diagrams were modelled using Sparx Systems Enterprise
+Architect, and exported as EMF files for import into docx. This
+approach make it very hard to track changes using a version control
+system. To improve the situation I have been looking for a good text
+based UML format with associated command line free software tools on
+Linux and Windows, to allow anyone to send in corrections to the UML
+diagrams in the specification. The tool must be text based to work
+with git, and command line to be able to run it automatically to
+generate the diagram images. Finally, it must be free software to
+allow anyone, even those that can not accept a non-free software
+license, to contribute.</p>
+
+<p>I did not know much about free software UML modelling tools when I
+started. I have used dia and inkscape for simple modelling in the
+past, but neither are available on Windows, as far as I could tell. I
+came across a nice
+<a href="https://modeling-languages.com/text-uml-tools-complete-list/">list
+of text mode uml tools</a>, and tested out a few of the tools listed
+there. <a href="http://plantuml.com/">The PlantUML tool</a> seemed
+most promising. After verifying that the packages
+<a href="https://tracker.debian.org/pkg/plantuml">is available in
+Debian</a> and found <a href="https://github.com/plantuml/plantuml">its
+Java source</a> under a GPL license on github, I set out to test if it
+could represent the diagrams we needed, ie the ones currently in
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/">the
+Noark 5 Tjenestegrensesnitt specification</a>. I am happy to report
+that it could represent them, even thought it have a few warts here
+and there.</p>
+
+<p>After a few days of modelling I completed the task this weekend. A
+temporary link to the complete set of diagrams (original and from
+PlantUML) is available in
+<a href="https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/issues/76">the
+github issue discussing the need for a text based UML format</a>, but
+please note I lack a sensible tool to convert EMF files to PNGs, so
+the "original" rendering is not as good as the original was in the
+publised PDF.</p>
+
+<p>Here is an example UML diagram, showing the core classes for
+keeping metadata about archived documents:</p>
+
+<pre>
+@startuml
+skinparam classAttributeIconSize 0
+
+!include media/uml-class-arkivskaper.iuml
+!include media/uml-class-arkiv.iuml
+!include media/uml-class-klassifikasjonssystem.iuml
+!include media/uml-class-klasse.iuml
+!include media/uml-class-arkivdel.iuml
+!include media/uml-class-mappe.iuml
+!include media/uml-class-merknad.iuml
+!include media/uml-class-registrering.iuml
+!include media/uml-class-basisregistrering.iuml
+!include media/uml-class-dokumentbeskrivelse.iuml
+!include media/uml-class-dokumentobjekt.iuml
+!include media/uml-class-konvertering.iuml
+!include media/uml-datatype-elektronisksignatur.iuml
+
+Arkivstruktur.Arkivskaper "+arkivskaper 1..*" <-o "+arkiv 0..*" Arkivstruktur.Arkiv
+Arkivstruktur.Arkiv o--> "+underarkiv 0..*" Arkivstruktur.Arkiv
+Arkivstruktur.Arkiv "+arkiv 1" o--> "+arkivdel 0..*" Arkivstruktur.Arkivdel
+Arkivstruktur.Klassifikasjonssystem "+klassifikasjonssystem [0..1]" <--o "+arkivdel 1..*" Arkivstruktur.Arkivdel
+Arkivstruktur.Klassifikasjonssystem "+klassifikasjonssystem [0..1]" o--> "+klasse 0..*" Arkivstruktur.Klasse
+Arkivstruktur.Arkivdel "+arkivdel 0..1" o--> "+mappe 0..*" Arkivstruktur.Mappe
+Arkivstruktur.Arkivdel "+arkivdel 0..1" o--> "+registrering 0..*" Arkivstruktur.Registrering
+Arkivstruktur.Klasse "+klasse 0..1" o--> "+mappe 0..*" Arkivstruktur.Mappe
+Arkivstruktur.Klasse "+klasse 0..1" o--> "+registrering 0..*" Arkivstruktur.Registrering
+Arkivstruktur.Mappe --> "+undermappe 0..*" Arkivstruktur.Mappe
+Arkivstruktur.Mappe "+mappe 0..1" o--> "+registrering 0..*" Arkivstruktur.Registrering
+Arkivstruktur.Merknad "+merknad 0..*" <--* Arkivstruktur.Mappe
+Arkivstruktur.Merknad "+merknad 0..*" <--* Arkivstruktur.Dokumentbeskrivelse
+Arkivstruktur.Basisregistrering -|> Arkivstruktur.Registrering
+Arkivstruktur.Merknad "+merknad 0..*" <--* Arkivstruktur.Basisregistrering
+Arkivstruktur.Registrering "+registrering 1..*" o--> "+dokumentbeskrivelse 0..*" Arkivstruktur.Dokumentbeskrivelse
+Arkivstruktur.Dokumentbeskrivelse "+dokumentbeskrivelse 1" o-> "+dokumentobjekt 0..*" Arkivstruktur.Dokumentobjekt
+Arkivstruktur.Dokumentobjekt *-> "+konvertering 0..*" Arkivstruktur.Konvertering
+Arkivstruktur.ElektroniskSignatur -[hidden]-> Arkivstruktur.Dokumentobjekt
+@enduml
+</pre>
+
+<p><a href="http://plantuml.com/class-diagram">The format</a> is quite
+compact, with little redundant information. The text expresses
+entities and relations, and there is little layout related fluff. One
+can reuse content by using include files, allowing for consistent
+naming across several diagrams. The include files can be standalone
+PlantUML too. Here is the content of
+<tt>media/uml-class-arkivskaper.iuml<tt>:</p>
+
+<pre>
+@startuml
+class Arkivstruktur.Arkivskaper <Arkivenhet> {
+ +arkivskaperID : string
+ +arkivskaperNavn : string
+ +beskrivelse : string [0..1]
+}
+@enduml
+</pre>
+
+<p>This is what the complete diagram for the PlantUML notation above
+look like:</p>
+
+<p><img width="80%" src="http://people.skolelinux.org/pere/blog/images/2019-03-25-noark5-plantuml-diagrameksempel.png"></p>
+
+<p>A cool feature of PlantUML is that the generated PNG files include
+the entire original source diagram as text. The source (with include
+statements expanded) can be extracted using for example
+<tt>exiftool</tt>. Another cool feature is that parts of the entities
+can be hidden after inclusion. This allow to use include files with
+all attributes listed, even for UML diagrams that should not list any
+attributes.</p>
+
+<p>The diagram also show some of the warts. Some times the layout
+engine place text labels on top of each other, and some times it place
+the class boxes too close to each other, not leaving room for the
+labels on the relationship arrows. The former can be worked around by
+placing extra newlines in the labes (ie "\n"). I did not do it here
+to be able to demonstrate the issue. I have not found a good way
+around the latter, so I normally try to reduce the problem by changing
+from vertical to horizontal links to improve the layout.</p>
+
+<p>All in all, I am quite happy with PlantUML, and very impressed with
+how quickly its lead developer responds to questions. So far I got an
+answer to my questions in a few hours when I send an email. I
+definitely recommend looking at PlantUML if you need to make UML
+diagrams. Note, PlantUML can draw a lot more than class relations.
+Check out the documention for a complete list. :)</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
projects / homepage.git / blobdiff