{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VZXKN5ZTOU4VER2CH3MG43HQRE","short_pith_number":"pith:VZXKN5ZT","canonical_record":{"source":{"id":"1211.2647","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-11-12T14:56:40Z","cross_cats_sorted":[],"title_canon_sha256":"29bd3aecf726b02252ea37a4f44f6abff0955cdae16fc43dfa49360c850fbc01","abstract_canon_sha256":"e3e65bc5b2c9c34c2efcaf79c0b24836edc2926adfca7e323cd4ffd7bc1aebf8"},"schema_version":"1.0"},"canonical_sha256":"ae6ea6f73375395247423ed86e6cf0892b1c395f4bf023048f75fe8530a50a1e","source":{"kind":"arxiv","id":"1211.2647","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.2647","created_at":"2026-05-18T03:30:12Z"},{"alias_kind":"arxiv_version","alias_value":"1211.2647v4","created_at":"2026-05-18T03:30:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.2647","created_at":"2026-05-18T03:30:12Z"},{"alias_kind":"pith_short_12","alias_value":"VZXKN5ZTOU4V","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VZXKN5ZTOU4VER2C","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VZXKN5ZT","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VZXKN5ZTOU4VER2CH3MG43HQRE","target":"record","payload":{"canonical_record":{"source":{"id":"1211.2647","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-11-12T14:56:40Z","cross_cats_sorted":[],"title_canon_sha256":"29bd3aecf726b02252ea37a4f44f6abff0955cdae16fc43dfa49360c850fbc01","abstract_canon_sha256":"e3e65bc5b2c9c34c2efcaf79c0b24836edc2926adfca7e323cd4ffd7bc1aebf8"},"schema_version":"1.0"},"canonical_sha256":"ae6ea6f73375395247423ed86e6cf0892b1c395f4bf023048f75fe8530a50a1e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:30:12.220521Z","signature_b64":"5FZ2Ff7lhMhTwbOSv8pSlnb+B1ceveaqc7Vn5BtXI8miJEdTThR1z4qqmm8RRVCNU53H4iUMDFp69AvHwL/3BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae6ea6f73375395247423ed86e6cf0892b1c395f4bf023048f75fe8530a50a1e","last_reissued_at":"2026-05-18T03:30:12.219974Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:30:12.219974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.2647","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:30:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HCG6yHHpTo9eBDZfHUTJOpMnYbFJbEsqhv1waSPIYH28g60c60ohn1KkXHa1b6PGZuAsEwGwe4CBTR2OgTWBAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:25:31.044867Z"},"content_sha256":"95126711091270e537e490f56ccadc965134483cdf32ed0c925276e771ae57cd","schema_version":"1.0","event_id":"sha256:95126711091270e537e490f56ccadc965134483cdf32ed0c925276e771ae57cd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VZXKN5ZTOU4VER2CH3MG43HQRE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Determining a Loop Material Flow Pattern for Automatic Guided Vehicle Systems on a Facility Layout","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Ardavan Asef-Vaziri, Hossein Jahandideh, Mohammad Modarres","submitted_at":"2012-11-12T14:56:40Z","abstract_excerpt":"In this paper, we present a heuristic procedure for designing a loop material flow pattern on a given facility layout with the aim of minimizing the total material handling distances. We present an approximation of the total material handling costs and greatly drop the required computational time by minimizing the approximation instead of the original objective function."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.2647","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:30:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5PKaG75Cdwv1+/TTC23yj2pBuivBsaepA34so7cIPk7Qka2r8AqYr0Ob20q/cin/84yGE4plF9Ik6DwDJDyGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:25:31.045210Z"},"content_sha256":"2fbe18585c703c91d81d2428d09347415cfcf70e5bbf3f2df388131f32a509c1","schema_version":"1.0","event_id":"sha256:2fbe18585c703c91d81d2428d09347415cfcf70e5bbf3f2df388131f32a509c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VZXKN5ZTOU4VER2CH3MG43HQRE/bundle.json","state_url":"https://pith.science/pith/VZXKN5ZTOU4VER2CH3MG43HQRE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VZXKN5ZTOU4VER2CH3MG43HQRE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-27T03:25:31Z","links":{"resolver":"https://pith.science/pith/VZXKN5ZTOU4VER2CH3MG43HQRE","bundle":"https://pith.science/pith/VZXKN5ZTOU4VER2CH3MG43HQRE/bundle.json","state":"https://pith.science/pith/VZXKN5ZTOU4VER2CH3MG43HQRE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VZXKN5ZTOU4VER2CH3MG43HQRE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VZXKN5ZTOU4VER2CH3MG43HQRE","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e3e65bc5b2c9c34c2efcaf79c0b24836edc2926adfca7e323cd4ffd7bc1aebf8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-11-12T14:56:40Z","title_canon_sha256":"29bd3aecf726b02252ea37a4f44f6abff0955cdae16fc43dfa49360c850fbc01"},"schema_version":"1.0","source":{"id":"1211.2647","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.2647","created_at":"2026-05-18T03:30:12Z"},{"alias_kind":"arxiv_version","alias_value":"1211.2647v4","created_at":"2026-05-18T03:30:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.2647","created_at":"2026-05-18T03:30:12Z"},{"alias_kind":"pith_short_12","alias_value":"VZXKN5ZTOU4V","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VZXKN5ZTOU4VER2C","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VZXKN5ZT","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:2fbe18585c703c91d81d2428d09347415cfcf70e5bbf3f2df388131f32a509c1","target":"graph","created_at":"2026-05-18T03:30:12Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In this paper, we present a heuristic procedure for designing a loop material flow pattern on a given facility layout with the aim of minimizing the total material handling distances. We present an approximation of the total material handling costs and greatly drop the required computational time by minimizing the approximation instead of the original objective function.","authors_text":"Ardavan Asef-Vaziri, Hossein Jahandideh, Mohammad Modarres","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-11-12T14:56:40Z","title":"Determining a Loop Material Flow Pattern for Automatic Guided Vehicle Systems on a Facility Layout"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.2647","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:95126711091270e537e490f56ccadc965134483cdf32ed0c925276e771ae57cd","target":"record","created_at":"2026-05-18T03:30:12Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e3e65bc5b2c9c34c2efcaf79c0b24836edc2926adfca7e323cd4ffd7bc1aebf8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-11-12T14:56:40Z","title_canon_sha256":"29bd3aecf726b02252ea37a4f44f6abff0955cdae16fc43dfa49360c850fbc01"},"schema_version":"1.0","source":{"id":"1211.2647","kind":"arxiv","version":4}},"canonical_sha256":"ae6ea6f73375395247423ed86e6cf0892b1c395f4bf023048f75fe8530a50a1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae6ea6f73375395247423ed86e6cf0892b1c395f4bf023048f75fe8530a50a1e","first_computed_at":"2026-05-18T03:30:12.219974Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:12.219974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5FZ2Ff7lhMhTwbOSv8pSlnb+B1ceveaqc7Vn5BtXI8miJEdTThR1z4qqmm8RRVCNU53H4iUMDFp69AvHwL/3BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:12.220521Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.2647","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:95126711091270e537e490f56ccadc965134483cdf32ed0c925276e771ae57cd","sha256:2fbe18585c703c91d81d2428d09347415cfcf70e5bbf3f2df388131f32a509c1"],"state_sha256":"4b6abe4b5f3a50b6d398e53ad9ad8f67efa0ced848bb008d35c4a0e8af0a9b1d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ov2xFtKhLi82a1o+BVT3GeyK3P4Qm5fKFaNgiOjZQjwFoxrSgcoRKoRrYhOfK6bqO0v1Y/oGuxB2G7YE8Z4yCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T03:25:31.047065Z","bundle_sha256":"f9b7f0e0c7ca4c17a97001e4a0d172ba6b66302a697f730d20cb7a5eae287090"}}