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    "abstract": "The prediction of radio propagation is renowned for being an imprecise science. There is a vast array of variables which affect radio propagation most of which must be quantified or at least approximated in the calculation method, if the broadcast system designer is to have confidence in the predicted results.",
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      "confidence": "high",
      "note": "Backfilled from SMPTE canonical repository (smpte-canonical-audit/canonicalLibrary.*.json)",
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    "authors": [
      {
        "affiliation": "TeleResources",
        "name": "Paul Vander Heyden"
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      {
        "affiliation": "TeleResources",
        "name": "Ken Pearson"
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      "confidence": "high",
      "note": "Canonical-confirmed full paper (summary-abstract set is orig-research in the SMPTE canonical repos); HIGHWIRE-era abstract label was a delivery artifact",
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      "source": "resolved",
      "updated": "2026-07-09T19:12:47.628Z",
      "version": "contenttype-fixes@v1"
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      "holder": "Society of Motion Picture and Television Engineers, Inc.",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
        "source": "parsed",
        "updated": "2026-05-22T21:44:19.125Z",
        "version": "smpte-conference-paper-nlm@v1"
      },
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
        "source": "parsed",
        "updated": "2026-05-22T21:44:19.125Z",
        "version": "smpte-conference-paper-nlm@v1"
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
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      "updated": "2026-05-22T21:44:19.125Z",
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      "confidence": "high",
      "note": "Derived from DOI 10.5594/M001145",
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      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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      "confidence": "medium",
      "note": "Composed from venue title, volume/issue and date",
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      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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    "docTitle": "Propagation and Demographic Analysis for a Broadcast Environment",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
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      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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      "confidence": "high",
      "note": "Constructed from DOI 10.5594/M001145",
      "source": "inferred",
      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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    "number": "7",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
      "source": "parsed",
      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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    "pages": "209–219",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
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      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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    "publicationDate": "1994-07-01",
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      "confidence": "high",
      "note": "Day absent in NLM source — padded to 01",
      "source": "parsed",
      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "high",
      "note": "Normalised to registry \"SMPTE\" convention from NLM publisher-name (The Society of Motion Picture and Television Engineers)",
      "source": "inferred",
      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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    "publisherLocation": {
      "city": "White Plains, NY",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
        "source": "parsed",
        "updated": "2026-05-22T21:44:19.125Z",
        "version": "smpte-conference-paper-nlm@v1"
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    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
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      "updated": "2026-05-22T21:44:19.125Z",
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      "bibliographic$meta": {
        "confidence": "medium",
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        "source": "parsed",
        "updated": "2026-07-06T20:02:43.384Z"
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    "resolvedHref": "https://journal.smpte.org/conferences/SMPTE%20'94%20Conference%20&%20Exhibition,%20Sydney,%20Australia/26/",
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      "confidence": "high",
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      "originalValue": null,
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      "active$meta": {
        "confidence": "medium",
        "note": "No explicit status in NLM source — conference papers default active",
        "source": "inferred",
        "updated": "2026-05-22T21:44:19.125Z",
        "version": "smpte-conference-paper-nlm@v1"
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    "volume": "1994",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptem/10.5594_M001145.xml)",
      "source": "parsed",
      "updated": "2026-05-22T21:44:19.125Z",
      "version": "smpte-conference-paper-nlm@v1"
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