{
  "abstract": "The ISO 26262 functional safety metric PMHF, which characterizes the probabilistic properties of random hardware failures, is discussed. The PMHF metric is used to determine the automotive safety integrity level (ASIL). The disadvantages of determining this metric and the inaccuracy associated with the specified dimension [1/hour] are shown. According to the authors of the article, the PMHF metric (the average operational lifetime probability of a dangerous hardware failure per hour) is dimensionless. Reasonable arguments are given that the dimension of the PMHF metric cannot differ from the dimension of the averaged probabilities.\n\nThe paper indicates the possible reason for the inaccuracy, and shows the correct way to calculate PMHF, which involves using not the operational lifetime (with a dimension of [hour]), but a dimensionless number of 1-hour time intervals within the device’s operational lifetime.",
  "abstract_shown": true,
  "affiliations": [
    "Unitsky String Technologies Inc.",
    "Moscow Technical University of Communication and Informatics",
    "Non"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Dmitriy Shevchenko"
    },
    {
      "affs": [
        1
      ],
      "name": "Victor Netes"
    },
    {
      "affs": [
        2
      ],
      "name": "Alexander Starovoitov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1zx1x4pczg38v.bib",
  "cited_by": 0,
  "doi": "10.66721/s1pfd068",
  "fulltext_url": "https://gnedenko.net/index.php/RTA/article/view/226",
  "id": "1zx1x4pczg38v",
  "issns": [
    "1932-2321"
  ],
  "landing_url": "https://doi.org/10.66721/s1pfd068",
  "language": "en",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "QA1-939"
    ],
    [
      "lcc",
      "T57-57.97"
    ],
    [
      "openalex",
      "2213|Safety Systems Engineering in Autonomy"
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  ],
  "openalex": "W7165516487",
  "pdf_url": "https://gnedenko.net/index.php/RTA/article/download/226/163",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-01",
  "publisher": "Gnedenko Forum",
  "ris": "https://research.draconitic.com/paper/1zx1x4pczg38v.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:20Z",
      "native_id": "df7638e650b74d8da249325137292aca",
      "source": "doaj",
      "url": "https://doi.org/10.66721/s1pfd068"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "lcc:QA1-939",
      "subfield": "general"
    }
  ],
  "title": "The dimension of the PMHF functional safety metric of ISO 26262 standard",
  "title_text": "The dimension of the PMHF functional safety metric of ISO 26262 standard",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:20Z",
  "url": "https://research.draconitic.com/paper/1zx1x4pczg38v",
  "venue": "Reliability: Theory & Applications",
  "versions": []
}