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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "https://jats.nlm.nih.gov/publishing/1.3/JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xml:lang="en">
  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>π-Economy</journal-title>
        <trans-title-group xml:lang="ru">
          <trans-title>π-Economy</trans-title>
        </trans-title-group>
      </journal-title-group>
      <issn pub-type="epub">2782-6015</issn>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">43</article-id>
      <title-group>
        <article-title>Algebra of difficulty in goal achievement as the operational basis of the quality result estimation</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Алгебра трудности достижения цели как операционная основа оценки качества результата</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Baeva</surname>
            <given-names>Nina</given-names>
          </name>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Kurkin</surname>
            <given-names>Evgeny</given-names>
          </name>
          <email>zhenek@mail.com</email>
        </contrib>
      </contrib-group>
      <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2011-12-10">
        <day>10</day>
        <month>12</month>
        <year>2011</year>
      </pub-date>
      <issue>6</issue>
      <issue-id pub-id-type="publisher-id">137</issue-id>
      <fpage>210</fpage>
      <lpage>213</lpage>
      <abstract xml:lang="en">
        <p>The notion of index of difficulty in goal achievement is considered and set of operations over it is supplied. The algebraic structure relative to generalized operations over indexes of difficulty in goal achievement is introduced and substained.</p>
      </abstract>
      <kwd-group xml:lang="en">
        <kwd>quality estimation</kwd>
        <kwd>difficulty in goal achievement</kwd>
        <kwd>algebraic structure</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec>
      <p>Представлено понятие «коэффициенты трудности достижения цели» и приведен набор операций над ними. Введена и обоснована алгебраическая система коэффициентов трудности достижения цели относительно обобщенных операций.</p>
    </sec>
  </body>
</article>
