https://www.orclever.com/journals/oprd 2026-03-20T21:03:47.983Z weekly 0.9 https://www.orclever.com/journals/oprd/copyright-notice 2026-03-02T17:52:02.167Z monthly 0.7 https://www.orclever.com/journals/oprd/archiving-policy 2026-03-02T17:52:02.167Z monthly 0.7 https://www.orclever.com/journals/oprd/repository-policy 2026-03-02T17:52:02.167Z monthly 0.7 https://www.orclever.com/journals/oprd/editorial-board 2026-03-02T17:52:02.167Z monthly 0.7 https://www.orclever.com/journals/oprd/archive 2025-12-31T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v7i1 2025-12-31T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v6i1 2025-06-30T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v5i1 2024-12-31T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v4i1 2024-05-31T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v3i1 2023-12-31T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v2i1 2023-03-28T00:00:00.000Z weekly 0.8 https://www.orclever.com/journals/oprd/archive/v1i1 2022-12-31T00:00:00.000Z weekly 0.8