rows { options { physical_type: PHYSICAL_STREAM_TYPE_QUADS max_name_table_size: 128 max_prefix_table_size: 16 max_datatype_table_size: 16 logical_type: LOGICAL_STREAM_TYPE_DATASETS version: 2 } } rows { prefix { value: "https://w3id.org/sciencelive/np/" } } rows { name { value: "RANLZSWPo1AXNszhQDilv20UB6wM32Gp6WzbUhTCfzUK4" } } rows { namespace { name: "this" value { prefix_id: 1 } } } rows { prefix { value: "https://w3id.org/sciencelive/np/RANLZSWPo1AXNszhQDilv20UB6wM32Gp6WzbUhTCfzUK4/" } } rows { name { } } rows { namespace { name: "sub" value { prefix_id: 2 } } } rows { prefix { value: "http://www.nanopub.org/nschema#" } } rows { namespace { name: "np" value { prefix_id: 3 name_id: 2 } } } rows { prefix { value: "http://www.w3.org/1999/02/22-rdf-syntax-ns#" } } rows { namespace { name: "rdf" value { prefix_id: 4 name_id: 2 } } } rows { prefix { value: "http://www.w3.org/ns/prov#" } } rows { namespace { name: "prov" value { prefix_id: 5 name_id: 2 } } } rows { prefix { value: "http://purl.org/nanopub/x/" } } rows { namespace { name: "npx" value { prefix_id: 6 name_id: 2 } } } rows { prefix { value: "http://purl.org/dc/terms/" } } rows { namespace { name: "dc" value { prefix_id: 7 name_id: 2 } } } rows { prefix { value: "http://www.w3.org/2001/XMLSchema#" } } rows { namespace { name: "xsd" value { prefix_id: 8 name_id: 2 } } } rows { name { value: "hasAssertion" } } rows { name { value: "assertion" } } rows { name { value: "Head" } } rows { quad { s_iri { prefix_id: 1 name_id: 1 } p_iri { prefix_id: 3 name_id: 3 } o_iri { prefix_id: 2 } g_iri { } } } rows { name { value: "hasProvenance" } } rows { name { value: "provenance" } } rows { quad { p_iri { prefix_id: 3 } o_iri { prefix_id: 2 } } } rows { name { value: "hasPublicationInfo" } } rows { name { value: "pubinfo" } } rows { quad { p_iri { prefix_id: 3 } o_iri { prefix_id: 2 } } } rows { name { value: "type" } } rows { name { value: "Nanopublication" } } rows { quad { p_iri { prefix_id: 4 } o_iri { prefix_id: 3 } } } rows { name { value: "healpix-wgs84" } } rows { prefix { value: "http://schema.org/" } } rows { name { value: "endDate" } } rows { quad { s_iri { prefix_id: 2 } p_iri { prefix_id: 9 } o_literal { lex: "2026-04-08" } g_iri { prefix_id: 2 name_id: 4 } } } rows { prefix { value: "https://w3id.org/sciencelive/o/terms/" } } rows { name { value: "FORRT-Replication-Outcome" } } rows { quad { p_iri { prefix_id: 4 name_id: 10 } o_iri { prefix_id: 10 name_id: 14 } } } rows { prefix { value: "http://www.w3.org/2000/01/rdf-schema#" } } rows { name { value: "label" } } rows { quad { p_iri { prefix_id: 11 } o_literal { lex: "WGS84 Ellipsoid Significantly Affects HEALPix Cell Assignment at Mid and High Latitudes" } } } rows { name { value: "hasConclusionDescription" } } rows { quad { p_iri { prefix_id: 10 } o_literal { lex: "WGS84 ellipsoid indexing assigns pixels to substantially different HEALPix cells than sphere-based indexing, particularly at mid and high latitudes. At mid-latitudes (+48\302\260), 98% of pixels are assigned to a different cell. This demonstrates that sphere-based HEALPix indexing is unsuitable for European Earth observation data (Copernicus/Sentinel, 45-65\302\260N). " } } } rows { name { value: "hasConfidenceLevel" } } rows { name { value: "HighConfidence" } } rows { quad { p_iri { } o_iri { } } } rows { name { value: "hasEvidenceDescription" } } rows { quad { p_iri { } o_literal { lex: " ELLIPSOID ANALYSIS (HEALPix depth 9, sphere vs WGS84):\n \n | Region | Center lat | Pixels in different cell | Jaccard similarity | \n |---------------|------------|--------------------------|-------------------| \n | Equatorial | 0\302\260 | 26.6% | 0.9951 | \n | Mid-latitude | +48\302\260 | 98.4% | 0.9844 | \n | High-latitude | +62\302\260 | 90.8% | 0.9868 |\n | Arctic | +78\302\260 | 52.6% | 0.9908 | \n \n At mid-latitudes (Mediterranean, +48\302\260), nearly every pixel (98.4%) is assigned to a different HEALPix cell when using sphere vs WGS84 ellipsoid.\n Polygon coverage Jaccard similarity drops to 0.9844, indicating measurable differences in spatial coverage. The effect peaks at mid-latitudes \n where the WGS84 ellipsoid deviates most from a sphere, and decreases towards the equator and poles. " } } } rows { name { value: "hasLimitationsDescription" } } rows { quad { p_iri { } o_literal { lex: " - Uses synthetic raster grids, not real Earth observation data\n - Single HEALPix depth (9) tested -- effect may vary at other depths \n - Four latitude bands only; continuous latitude sweep not performed \n - Does not quantify downstream impact on scientific analyses (e.g., land cover classification accuracy) " } } } rows { name { value: "hasOutcomeRepository" } } rows { prefix { value: "https://doi.org/10.5281/" } } rows { name { value: "zenodo.19488374" } } rows { quad { p_iri { } o_iri { prefix_id: 12 } } } rows { name { value: "hasValidationStatus" } } rows { name { value: "Validated" } } rows { quad { p_iri { prefix_id: 10 } o_iri { } } } rows { name { value: "isOutcomeOf" } } rows { prefix { value: "https://w3id.org/sciencelive/np/RAocR3vJTYJPEfL8vIBN2cjEFie2vT-tvhOS7IA431Dqk/" } } rows { name { value: "healpix-replication2" } } rows { quad { p_iri { } o_iri { prefix_id: 13 } } } rows { name { value: "wasAttributedTo" } } rows { prefix { value: "https://orcid.org/" } } rows { name { value: "0000-0002-1784-2920" } } rows { quad { s_iri { prefix_id: 2 name_id: 4 } p_iri { prefix_id: 5 name_id: 27 } o_iri { prefix_id: 14 } g_iri { prefix_id: 2 name_id: 7 } } } rows { prefix { value: "http://xmlns.com/foaf/0.1/" } } rows { name { value: "name" } } rows { quad { s_iri { prefix_id: 14 name_id: 28 } p_iri { prefix_id: 15 } o_literal { lex: " Anne Fouilloux" } g_iri { prefix_id: 2 name_id: 9 } } } rows { name { value: "created" } } rows { datatype { value: "http://www.w3.org/2001/XMLSchema#dateTime" } } rows { quad { s_iri { prefix_id: 1 name_id: 1 } p_iri { prefix_id: 7 name_id: 30 } o_literal { lex: "2026-04-09T20:59:47.543Z" datatype: 1 } } } rows { name { value: "creator" } } rows { quad { p_iri { } o_iri { prefix_id: 14 name_id: 28 } } } rows { name { value: "license" } } rows { prefix { value: "https://creativecommons.org/licenses/by/4.0/" } } rows { quad { p_iri { prefix_id: 7 name_id: 32 } o_iri { prefix_id: 16 name_id: 2 } } } rows { name { value: "introduces" } } rows { quad { p_iri { prefix_id: 6 name_id: 33 } o_iri { prefix_id: 2 name_id: 12 } } } rows { name { value: "wasCreatedAt" } } rows { prefix { id: 8 value: "https://" } } rows { name { value: "platform.sciencelive4all.org" } } rows { quad { p_iri { prefix_id: 6 name_id: 34 } o_iri { prefix_id: 8 } } } rows { name { value: "ExampleNanopub" } } rows { quad { p_iri { prefix_id: 4 name_id: 10 } o_iri { prefix_id: 6 name_id: 36 } } } rows { quad { p_iri { prefix_id: 11 name_id: 15 } o_literal { lex: "NP created using Declaring a replication study outcome according to FORRT" } } } rows { prefix { id: 3 value: "https://w3id.org/np/o/ntemplate/" } } rows { name { value: "wasCreatedFromTemplate" } } rows { prefix { id: 9 value: "https://w3id.org/np/" } } rows { name { value: "RA2zljn0Nw9SadppOyxZoh-_Rxosslrq-vYG-p9SttnJE" } } rows { quad { p_iri { prefix_id: 3 name_id: 37 } o_iri { prefix_id: 9 } } } rows { name { value: "sig" } } rows { name { value: "hasAlgorithm" } } rows { quad { s_iri { prefix_id: 2 } p_iri { prefix_id: 6 } o_literal { lex: "RSA" } } } rows { name { value: "hasPublicKey" } } rows { quad { p_iri { } o_literal { lex: "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" } } } rows { name { value: "hasSignature" } } rows { quad { p_iri { } o_literal { lex: "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" } } } rows { name { value: "hasSignatureTarget" } } rows { quad { p_iri { } o_iri { prefix_id: 1 name_id: 1 } } } rows { name { value: "signedBy" } } rows { quad { p_iri { prefix_id: 6 name_id: 44 } o_iri { prefix_id: 14 name_id: 28 } } }