{
  "schema_version": "1.0.0",
  "publication_state": "pinned",
  "source": {
    "repository": "D-sorganization/UpstreamDrift",
    "commit": "69eb7e9db32ccd17e45824619315b1d04b400c27",
    "issue_url": "https://github.com/D-sorganization/UpstreamDrift/issues/8470",
    "pull_request_url": "https://github.com/D-sorganization/UpstreamDrift/pull/8473",
    "evidence_url": "https://github.com/D-sorganization/UpstreamDrift/blob/69eb7e9db32ccd17e45824619315b1d04b400c27/docs/research/proximal_distal_energy_transfer/data/hand_path_attribution/hand_path_attribution_study.json"
  },
  "regeneration_commands": [
    "python -m scripts.research.proximal_distal_energy.run_hand_path_attribution_study",
    "python -m pytest tests/research/test_double_pendulum_attribution.py tests/research/test_one_arm_attribution.py tests/research/test_two_arm_closed_loop.py tests/research/test_two_hand_preactivation_hypothesis.py tests/research/test_hand_path_attribution_study.py -q"
  ],
  "artifacts": [
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_hand_path_components.svg",
      "sha256": "b493255ee0b40edbeaea3c0b56f358bc7866a99a6d5b489b5750adb6140da810",
      "role": "total, drift, control, and ZVCF hand-path components"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_hand_path_force_vectors.svg",
      "sha256": "068cbb252b2c68603a4be56d6d8de9da180ecfc745a0a2d0adcc08405a75276e",
      "role": "same-state force-vector geometry"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_hand_path_impulse_work.svg",
      "sha256": "714a15b2cbf2dc6a7fd2bfc8049cb75d5dea28fec0da38939e9bff1b2ae28acd",
      "role": "signed impulse and cumulative force-work attribution"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_hand_path_phase_joint_shares.svg",
      "sha256": "c2e419fe0642eabe03423399c0173d90eb4691c05ab55254c93237521ca32afa",
      "role": "every-joint normalized-time-quartile attribution"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_hand_path_power_shares.svg",
      "sha256": "5d6e17ac6caacf75fdb94b310a29b153d7d20d90893e7b475e65bca73ff7a27e",
      "role": "instantaneous power shares with cancellation masking"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_hand_path_sensitivity_closure.svg",
      "sha256": "4d91f674b7d5ed003fa7a74168c6ce63201326f813348d79f3ccb387a9e10dc1",
      "role": "closure and local sensitivity evidence"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_two_hand_common_differential.svg",
      "sha256": "7928c02b7a5ce53437cacf2ce9529c79f01ca4f432382d359ff7d3add69d0b2c",
      "role": "two-hand common and differential contact-force modes"
    },
    {
      "path": "articles/figures/proximal_distal_energy_transfer/fig_two_hand_preactivation_hypothesis.svg",
      "sha256": "925cc8439a05d921795da06dabfc144b6de2a7601b8282b9a81e725bc8c593dc",
      "role": "bounded residual-couple preview hypothesis"
    }
  ],
  "evidence": {
    "status": "published",
    "model_tiers": [
      "exact_planar_double_pendulum",
      "one_arm_three_link_point_mass",
      "two_arm_floating_club_closed_loop"
    ],
    "quantities": [
      "force",
      "force_along_hand_path",
      "impulse",
      "power",
      "work",
      "joint_attribution"
    ],
    "results": {
      "double_pendulum": {
        "model_tier": "exact_planar_double_pendulum",
        "trajectory_kind": "forward_simulation_truncated_at_first_valid_impact",
        "integration_interpretation": "Integrated along a forward-simulated trajectory.",
        "primary_estimand": {
          "reference_point": "wrist",
          "force_direction": "golfer_on_club",
          "path_length_m": 2.224145923850691,
          "force_work_j": {
            "total": 130.7943115090917,
            "drift": 132.3747779102122,
            "control": -1.5804664011204865,
            "zvcf": -1.5877535321686622
          },
          "mean_force_n": {
            "total": 58.80653337828028,
            "drift": 59.51712812126559,
            "control": -0.7105947429853009,
            "zvcf": -0.7138711157133814
          }
        },
        "closure": {
          "force_max_abs": 0.0,
          "couple_max_abs": 1.7763568394002505e-15,
          "power_max_abs": 2.2737367544323206e-13,
          "work_max_abs": 5.684341886080802e-14
        }
      },
      "one_arm": {
        "model_tier": "one_arm_three_link_point_mass",
        "trajectory_kind": "forward_simulation_on_declared_fixed_time_window",
        "integration_interpretation": "Integrated along a forward-simulated trajectory.",
        "primary_estimand": {
          "reference_point": "wrist",
          "force_direction": "golfer_on_club",
          "path_length_m": 2.733619975314636,
          "force_work_j": {
            "total": 27.801698744381124,
            "drift": 28.78064500407536,
            "control": -0.9789462596942398,
            "zvcf": -1.8268330330941054
          },
          "mean_force_n": {
            "total": 10.170286651194514,
            "drift": 10.528400166801804,
            "control": -0.35811351560729077,
            "zvcf": -0.6682834664623927
          }
        },
        "closure": {
          "force_max_abs": 0.0,
          "couple_max_abs": 1.7763568394002505e-15,
          "power_max_abs": 1.1368683772161603e-13,
          "work_max_abs": 5.684341886080802e-14
        }
      },
      "two_arm": {
        "model_tier": "two_arm_floating_club_closed_loop",
        "trajectory_kind": "prescribed_constraint_consistent_kinematics",
        "integration_interpretation": "Kinematic-sweep diagnostic on a prescribed constraint-consistent path; not realized forward-simulation work.",
        "common_differential_convention": "common=right+left; differential=(right-left)/2",
        "primary_estimand": {
          "reference_point": "mid_grip_equal_to_club_center_for_symmetric_grip_offsets",
          "force_direction": "golfer_on_club",
          "path_length_m": 0.042464712443592983,
          "force_work_j": {
            "total": -0.0038145186742128308,
            "drift": -0.05236006526234929,
            "control": 0.04854554658813643,
            "zvcf": 0.0018807828173526796
          },
          "mean_force_n": {
            "total": -0.08982796431931002,
            "drift": -1.2330253108837266,
            "control": 1.1431973465644159,
            "zvcf": 0.04429048753953
          }
        },
        "closure": {
          "force_max_abs": 0.0,
          "couple_max_abs": 0.0,
          "power_max_abs": 3.552713678800501e-15,
          "work_max_abs": 4.440892098500626e-16
        }
      }
    },
    "bounded_preview_hypothesis": {
      "study_type": "model_only_delayed_actuator_preview_hypothesis",
      "time_constant_s": 0.03,
      "best_preview_s": 0.024,
      "reactive_rmse_nm": 1.252334003233535,
      "preview_rmse_nm": 0.5311727683147726,
      "improvement_percent": 57.58537523190453,
      "pointwise_ztcf_minimum_nm": -19.6304815091102,
      "base_at_ztcf_minimum_nm": -22.7842186913133,
      "control_residual_at_ztcf_minimum_nm": -3.15373718220311,
      "human_preactivation": "not_established",
      "clubhead_speed_outcome": "not_evaluated",
      "muscle_activation": "not_modeled"
    }
  },
  "release_blockers": [],
  "pin_procedure": [
    "The canonical UpstreamDrift analysis merged through protected PR 8473.",
    "The exact 40-character merge commit is recorded and verified on UpstreamDrift remote main.",
    "Only compact result records and selected publication SVGs are vendored here.",
    "Every vendored artifact path and SHA-256 digest is checked offline.",
    "The validator requires all three model tiers and finite, closing force-work estimands.",
    "Run python scripts/check_proximal_distal_evidence.py --require-pinned before publication."
  ]
}