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Record W2802701080 · doi:10.1139/tcsme-2002-0017

ON THE USE OF NUMERICAL OPTIMIZATION TO MAXIMIZE THE CRITICAL VELOCITY OF A SIMPLE RAIL VEHICLE

2002· article· en· W2802701080 on OpenAlexaffvenue
A.E. Baumal, John McPhee

Bibliographic record

VenueTransactions of the Canadian Society for Mechanical Engineering · 2002
Typearticle
Languageen
FieldEngineering
TopicRailway Engineering and Dynamics
Canadian institutionsUniversity of Waterloo
Fundersnot available
KeywordsCritical ionization velocityInertiaSimple (philosophy)Suspension (topology)Critical speedControl theory (sociology)Set (abstract data type)Genetic algorithmComputer scienceMathematical optimizationMathematicsMechanicsEngineeringPhysicsMechanical engineeringClassical mechanics

Abstract

fetched live from OpenAlex

It is shown how numerical optimization methods can be used to obtain design parameters for a simple rail vehicle that maximize the “critical velocity”, the speed at which the response becomes unstable. To automatically calculate the critical velocity for a given set of suspension design parameters, a unique approach using gradient-based optimization is employed. The critical velocity was increased by 22 percent by modifying the suspension and inertia properties by only 10 percent The design results from the genetic algorithm are consistent with previous observations in the literature.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.965
Threshold uncertainty score0.391

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.024
GPT teacher head0.198
Teacher spread0.174 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreMethods

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".

Quick stats

Citations2
Published2002
Admission routes2
Has abstractyes

Explore more

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