fiducial

Definitions

  • WordNet 3.6
    • adj fiducial based on trust
    • adj fiducial used as a fixed standard of reference for comparison or measurement "a fiducial point"
    • adj fiducial relating to or of the nature of a legal trust (i.e. the holding of something in trust for another) "a fiduciary contract","in a fiduciary capacity","fiducial power"
    • ***
Webster's Revised Unabridged Dictionary
    • Fiducial Having faith or trust; confident; undoubting; firm. "Fiducial reliance on the promises of God."
    • Fiducial Having the nature of a trust; fiduciary; as, fiducial power.
    • ***
Century Dictionary and Cyclopedia
    • fiducial Trusting; confident; undoubting; firm.
    • fiducial Same as fiduciary, 2.
    • fiducial In physics, having a fixed position or character, and hence used as a basis of reference or comparison.
    • fiducial Relating to or characterized by the belief in supernatural powers.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Fiducial fi-dū′shi-al showing confidence or reliance: of the nature of a trust
    • n Fiducial one who holds anything in trust:
    • n Fiducial (theol.) one who depends for salvation on faith without works, an Antinomian
    • ***

Etymology

Webster's Revised Unabridged Dictionary
L. fiducia, trust, confidence; akin to fides, faith. See Faith

Usage

In literature:

As regards the fiducial lines, they might be drawn on the glass screen; but black lines are not, I find, the best.
"Inquiries into Human Faculty and Its Development" by Francis Galton
Associated Words: Fides, fiduciary, fiducial, bona fide, pistiology.
"Putnam's Word Book" by Louis A. Flemming
The cistern should not, however, require adjustment to a zero or fiducial point.
"A Treatise on Meteorological Instruments" by Henry Negretti
***

In poetry:

By faith the word of truth's receiv'd,
By sense we know we have believ'd.
Faith's certain by fiducial acts,
Sense by its evidential facts.
"The Believer's Principles : Chap. IV." by Ralph Erskine

In news:

Fiducial markers, grippers on cups… Boy that's well thought-through.
Fiddling with fiducials again.
I recently posted a note about fiducials but I didn't have any images.
***

In science:

In Panels (a-c) we directly compare the H2 run to the corresponding Fiducial run for each simulation, and find that the H2 run produces far fewer low-mass galaxies as expected.
Molecular hydrogen regulated star formation in cosmological SPH simulations
Due to the heavy computational load, we did not complete the corresponding Fiducial run for N500L34, therefore this run is not used for other comparisons in this paper.
Molecular hydrogen regulated star formation in cosmological SPH simulations
Dashed lines represent the Fiducial run, while solid lines represent the H2 run.
Molecular hydrogen regulated star formation in cosmological SPH simulations
Panels (a-c): Galaxy stellar mass function for three different box sizes at z = 6, plotted against their respective Fiducial run.
Molecular hydrogen regulated star formation in cosmological SPH simulations
Panel (d): Composite GSMF of the H2 runs, compared with the Fiducial composite GSMF (black dashed line).
Molecular hydrogen regulated star formation in cosmological SPH simulations
Panel (a): composite GSMF for z = 3 for both the H2 (solid lines) and Fiducial (dashed lines) runs.
Molecular hydrogen regulated star formation in cosmological SPH simulations
However, Nagamine et al. (2010) also found that the Fiducial run over-predicts f (NHI ) at log NHI > 22, and argued that this might be due to the neglect of H2 within the Pressure SF model (Section 2.1.2), because then part of Hi would be converted into H2 and f (NHI ) would decrease at high NHI values.
Molecular hydrogen regulated star formation in cosmological SPH simulations
The Fiducial run is omitted from panels (c) & (d), because the N600L100 Fiducial run did not use the OTUV threshold which is necessary to bring the column density distribution into agreement with observations at z = 3 (Nagamine et al.
Molecular hydrogen regulated star formation in cosmological SPH simulations
In Panel (a) we see that the H2 run consistently has higher amplitude of f (NHI ) than the Fiducial run due to less efficient star formation.
Molecular hydrogen regulated star formation in cosmological SPH simulations
At z = 3 (b) however, we find that the H2 run has a higher f (NHI ) than that of Fiducial run at log NHI > 22.
Molecular hydrogen regulated star formation in cosmological SPH simulations
Fiducial run (Figure 2), and it was also clear from Figure 3 that the gas particles are reaching higher densities in the H2 run before being heated by SN feedback than in the Fiducial run.
Molecular hydrogen regulated star formation in cosmological SPH simulations
We have shown that the new SF threshold densities (i.e., metallicity-dependent density required for H2 formation) are higher than the constant threshold density used in the Fiducial run, which results in overall decrease of SFRD (Figure 7) in the new model.
Molecular hydrogen regulated star formation in cosmological SPH simulations
Consequently, SF starts later than in the Fiducial run, and the peak of SFRD has slightly shifted to a lower redshift.
Molecular hydrogen regulated star formation in cosmological SPH simulations
The Fiducial run with previous SF model significantly overpredicts SHMR at the same mass range, therefore the H2 run provides a significant improvement on this aspect.
Molecular hydrogen regulated star formation in cosmological SPH simulations
The sSFRs of galaxies in the H2 and Fiducial runs are in rough agreement with observations (Figure 11), and they decrease systematically with decreasing redshift.
Molecular hydrogen regulated star formation in cosmological SPH simulations
***