<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type='text/xsl' href='/oai/static/oai2.xsl' ?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">
  <responseDate>2026-05-21T22:49:30Z</responseDate>
  <request identifier="92b156033cd21399cec40d1951faba2a265166b71fd1c495df73e64ffaff4017" metadataPrefix="oai_ddi25" verb="GetRecord">https://datacatalogue.cessda.eu/oai-pmh/v0/oai</request>
  <GetRecord>
    <record>
    <header>
      <identifier>92b156033cd21399cec40d1951faba2a265166b71fd1c495df73e64ffaff4017</identifier>
      <datestamp>2025-06-17T03:16:37Z</datestamp>
      <setSpec>language:en</setSpec><setSpec>openaire_data</setSpec>
    </header>
      <metadata>
        <codeBook xmlns="ddi:codebook:2_5" version="2.5" xsi:schemaLocation="ddi:codebook:2_5 http://www.ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd">
    <docDscr>
      <citation>
        <titlStmt>
          <titl xml:lang="en">DDI study level documentation for study 10.7802/2555 Invasion@Ukraine</titl>
        </titlStmt>
        <prodStmt>
        </prodStmt>
        <holdings xml:lang="en" URI="https://search.gesis.org/research_data/SDN-10.7802-2555?lang=en"/><holdings xml:lang="de" URI="https://search.gesis.org/research_data/SDN-10.7802-2555?lang=de"/>
      </citation>
    </docDscr>
  <stdyDscr>
    <citation>
      <titlStmt>
        <titl xml:lang="en">Invasion@Ukraine</titl>
        <parTitl xml:lang="de">Invasion@Ukraine</parTitl>
        <IDNo xml:lang="en" agency="GESIS">10.7802/2555</IDNo><IDNo xml:lang="de" agency="GESIS">10.7802/2555</IDNo><IDNo xml:lang="en" agency="DOI">10.7802/2555</IDNo><IDNo xml:lang="de" agency="DOI">10.7802/2555</IDNo>
      </titlStmt>
      <rspStmt>
        <AuthEnty affiliation="Universität Münster" xml:lang="en">Pohl, Janina
        </AuthEnty><AuthEnty affiliation="Universität Münster" xml:lang="de">Pohl, Janina
        </AuthEnty><AuthEnty affiliation="Universität Münster" xml:lang="en">Markmann, Simon
        </AuthEnty><AuthEnty affiliation="Universität Münster" xml:lang="de">Markmann, Simon
        </AuthEnty><AuthEnty affiliation="GESIS - Leibniz-Institut für Sozialwissenschaften" xml:lang="en">Assenmacher, Dennis
        </AuthEnty><AuthEnty affiliation="GESIS - Leibniz-Institut für Sozialwissenschaften" xml:lang="de">Assenmacher, Dennis
        </AuthEnty><AuthEnty affiliation="Universität Münster" xml:lang="en">Grimme, Christian
        </AuthEnty><AuthEnty affiliation="Universität Münster" xml:lang="de">Grimme, Christian
        </AuthEnty>
      </rspStmt>
      <prodStmt>
        <prodDate xml:lang="en"/>
      </prodStmt>
      <distStmt>
        <distrbtr abbr="GESIS" URI="http://www.gesis.org/" xml:lang="en">GESIS Data Archive for the Social Sciences</distrbtr><distrbtr abbr="GESIS" URI="http://www.gesis.org/" xml:lang="de">GESIS Datenarchiv für Sozialwissenschaften</distrbtr>
        <distDate xml:lang="en" date="2023"/><distDate xml:lang="de" date="2023"/>
      </distStmt>
      <verStmt>
        <version date="2023" xml:lang="en"/><version date="2023" xml:lang="de"/>
      </verStmt>
      <holdings xml:lang="en" URI="https://search.gesis.org/research_data/SDN-10.7802-2555?lang=en"/><holdings xml:lang="de" URI="https://search.gesis.org/research_data/SDN-10.7802-2555?lang=de"/>
    </citation>
    <stdyInfo>
      <subject>
        <keyword xml:lang="en">Ukraine</keyword><keyword xml:lang="en">Russia</keyword><keyword xml:lang="en">war</keyword><keyword xml:lang="en">war of aggression</keyword><keyword xml:lang="en">twitter</keyword><keyword xml:lang="en">discourse</keyword><keyword xml:lang="en">invasion</keyword><keyword xml:lang="en">opinion formation</keyword><keyword xml:lang="en">public opinion</keyword><keyword xml:lang="en">disinformation</keyword><keyword xml:lang="de">Ukraine</keyword><keyword xml:lang="de">Russia</keyword><keyword xml:lang="de">war</keyword><keyword xml:lang="de">war of aggression</keyword><keyword xml:lang="de">twitter</keyword><keyword xml:lang="de">discourse</keyword><keyword xml:lang="de">invasion</keyword><keyword xml:lang="de">opinion formation</keyword><keyword xml:lang="de">public opinion</keyword><keyword xml:lang="de">disinformation</keyword>
      </subject>
      <abstract xml:lang="en">We publish a dataset of raw tweets collected via the Twitter Streaming API in the context of the onset of the war, which Russia started in Ukraine on February 24, 2022. In total, we gathered 8.7 million original tweets between February 17 and March 3, 2022, produced by 2.3 million individual user accounts.  We collected the data using Twitter's streaming API (represents 1% of the total traffic on Twitter) and filtered for all English Tweets containing at least one of the hashtags #ukraine, #russia, and #conflict. In addition, the data has been annotated with availability tags, resulting from rehydration attempts at two points in time: directly after data acquisition and shortly before manuscript submission. This may provide information on Twitter moderation policies. We share only the Tweet IDs with the corresponding availability information in this repository.</abstract><abstract xml:lang="de">We publish a dataset of raw tweets collected via the Twitter Streaming API in the context of the onset of the war, which Russia started in Ukraine on February 24, 2022. In total, we gathered 8.7 million original tweets between February 17 and March 3, 2022, produced by 2.3 million individual user accounts.  We collected the data using Twitter's streaming API (represents 1% of the total traffic on Twitter) and filtered for all English Tweets containing at least one of the hashtags #ukraine, #russia, and #conflict. In addition, the data has been annotated with availability tags, resulting from rehydration attempts at two points in time: directly after data acquisition and shortly before manuscript submission. This may provide information on Twitter moderation policies. We share only the Tweet IDs with the corresponding availability information in this repository.</abstract>
      <sumDscr>
        <collDate xml:lang="en" date="2022-2-17" event="start"/><collDate xml:lang="en" date="2022-3-3" event="end"/>
        <universe xml:lang="en" clusion="I">All English Tweets between February 17 and March 3, 2022 containing at least one of the hashtags #ukraine, #russia, and #conflict.</universe>
      </sumDscr>
    </stdyInfo>
    <method>
      <dataColl>
        <sampProc xml:lang="en">Probability Sample - Simple random Sample<concept/></sampProc><sampProc xml:lang="de">Probability Sample - Simple random Sample<concept/></sampProc>
      </dataColl>
    </method>
    <dataAccs>
      <useStmt>
        <restrctn xml:lang="en">Free access (without registration) - The research data can be downloaded directly by anyone without further limitations.
Data can only be used for non-commercial research</restrctn><restrctn xml:lang="de">Freier Zugang (ohne Registrierung) - Die Forschungsdaten können von jedem direkt heruntergeladen werden.
Data can only be used for non-commercial research</restrctn>
      </useStmt>
    </dataAccs>
    <othrStdyMat>
    </othrStdyMat>
  </stdyDscr>
  <fileDscr>
  </fileDscr>
</codeBook>
      </metadata>
      <about>
        <provenance xmlns="http://www.openarchives.org/OAI/2.0/provenance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/provenance http://www.openarchives.org/OAI/2.0/provenance.xsd">
    <originDescription harvestDate="2025-06-17T03:16:37Z" altered="true">
      <baseURL>http://dbkapps.gesis.org/dbkoai/oai.asp</baseURL>
      <identifier>oai:dbk.gesis.org:SDN/10.7802_2555</identifier>
      <datestamp>2023-04-06</datestamp>
      <metadataNamespace>ddi:codebook:2_5</metadataNamespace>
    </originDescription>
</provenance>
      </about>
    </record>
  </GetRecord>
</OAI-PMH>