Bibliographic record
Abstract
The network model approach given by E. L. Adler et al. (IEEE Trans. Ultrason. Ferroelec. Freq. Contr., vol.38, no.3, pp.220-230, May 1991) for analyzing arbitrarily oriented short-circuited surface acoustic wave (SAW) grating structures is extended to include interdigital transducers (IDTs) which are also arbitrarily oriented. The IDT structure is divided into cells, each modeled by a sequence of mismatched transmission lines consisting of metallized and unmetallized regions. The model includes: (1) the impedance difference between metallized and free regions, the reflection coefficient at the metallization upstep, the reflection coefficient in the reverse direction at the downstep (all deduced from the Datta-Hunsinger perturbation formula); (2) the velocity difference between the free and metallized regions obtained using the SAW propagation calculation software of Adler et al. for arbitrarily oriented multilayers; and (3) the energy storage susceptance at each finger discontinuity. This model permits good physical insight into the structure's characteristics and allows simple procedures for finding high directivity (so-called NSPUDT) orientations. This unit-cell-based arbitrarily oriented IDT model applies to any desired IDT geometry.>
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".