{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BVNXCZM6PE7GIXXYVD3QBMX7E3","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":"2bf62232c623f3ed88bfa57fafa701465a89182e3a979ed68dd17074f5bbd91d","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-09T16:34:39Z","title_canon_sha256":"282f3fba3d3c3f5aa7be8607ccdf40a9205252a7b1b519a2335260c9389cb14e"},"schema_version":"1.0","source":{"id":"1705.03415","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.03415","created_at":"2026-05-18T00:44:47Z"},{"alias_kind":"arxiv_version","alias_value":"1705.03415v1","created_at":"2026-05-18T00:44:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.03415","created_at":"2026-05-18T00:44:47Z"},{"alias_kind":"pith_short_12","alias_value":"BVNXCZM6PE7G","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BVNXCZM6PE7GIXXY","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BVNXCZM6","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:789f6d33b0e3401d014b4ced2bcf0c6925f07a803c2be3d214b390ad909dc59a","target":"graph","created_at":"2026-05-18T00:44:47Z","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":"Unmanned Aerial Vehicle mounted base stations (UAV-BSs) can provide wireless services in a variety of scenarios. In this letter, we propose an optimal placement algorithm for UAV-BSs that maximizes the number of covered users using the minimum transmit power. We decouple the UAV-BS deployment problem in the vertical and horizontal dimensions without any loss of optimality. Furthermore, we model the UAV-BS deployment in the horizontal dimension as a circle placement problem and a smallest enclosing circle problem. Simulations are conducted to evaluate the performance of the proposed method for ","authors_text":"Amr El-Keyi, Faraj Lagum, Halim Yanikomeroglu, Mohamed Alzenad","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-09T16:34:39Z","title":"3D Placement of an Unmanned Aerial Vehicle Base Station (UAV-BS) for Energy-Efficient Maximal Coverage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.03415","kind":"arxiv","version":1},"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":"sha256:7480d1752dec7c053b54260018cfed21072f9018dc61053d9e31c8688ca60cf2","target":"record","created_at":"2026-05-18T00:44:47Z","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":"2bf62232c623f3ed88bfa57fafa701465a89182e3a979ed68dd17074f5bbd91d","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-09T16:34:39Z","title_canon_sha256":"282f3fba3d3c3f5aa7be8607ccdf40a9205252a7b1b519a2335260c9389cb14e"},"schema_version":"1.0","source":{"id":"1705.03415","kind":"arxiv","version":1}},"canonical_sha256":"0d5b71659e793e645ef8a8f700b2ff26fc45265f141c6638e29cd3ddaffa423e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d5b71659e793e645ef8a8f700b2ff26fc45265f141c6638e29cd3ddaffa423e","first_computed_at":"2026-05-18T00:44:47.931501Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:47.931501Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GugxCPb5GqNeYx1adD3wgJCmJnYFIPUYBwECdpeZNOwuqPXj/hFe8O2jpqkeTHqjO8Knfnh4c5+HOxo7B27KDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:47.932196Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.03415","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7480d1752dec7c053b54260018cfed21072f9018dc61053d9e31c8688ca60cf2","sha256:789f6d33b0e3401d014b4ced2bcf0c6925f07a803c2be3d214b390ad909dc59a"],"state_sha256":"abebf4211a683cd67614cb96b04c031d8c87a0150332b6efc68e9b5ff6e474c3"}