headway

Definitions

  • WordNet 3.6
    • n headway forward movement "the ship made little headway against the gale"
    • n headway vertical space available to allow easy passage under something
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Webster's Revised Unabridged Dictionary
    • Headway (Arch) Clear space under an arch, girder, and the like, sufficient to allow of easy passing underneath; clearance; headroom.
    • Headway The progress made by a ship in motion; hence, progress or success of any kind.
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Century Dictionary and Cyclopedia
    • n headway Motion ahead or forward; force or amount of such motion; rate of progress: said specifically of a ship, but applied to all kinds of progress, literally or figuratively.
    • n headway In architecture, clear space in height, as from a floor to a ceiling, or from the ground to the crown of an arch; specifically, the perpendicular distance from any step or landing of a stair to the ceiling.
    • n headway In coal-mining, a cross-heading.
    • n headway In railroading, the. time which elapses after one train passes a certain point before the following train passes that point.
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Chambers's Twentieth Century Dictionary
    • Headway motion ahead, esp. of a ship
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Idioms

Make headway - If you make headway, you make progress.
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Etymology

Chambers's Twentieth Century Dictionary
A.S. héafod, Dut. hoofd, Ger. haupt.

Usage

In literature:

Try as they might, they could make no headway.
"Grace Harlowe's Sophomore Year at High School" by Jessie Graham Flower
In the twinkling of an eye, and while his horse was yet under full headway, his decision was made.
"Ella Barnwell" by Emerson Bennett
When the steamer had gathered sufficient headway, she was brought about as cautiously as before.
"Across India" by Oliver Optic
Then they wonder why they do not make more headway.
"Crowds" by Gerald Stanley Lee
We could scarcely make headway against the blow.
"The Scientific American Boy" by A. Russell (Alexander Russell) Bond
She made little or no headway, but rather drifted with the waves.
"Outward Bound" by Oliver Optic
We seem able to make no headway against her, in spite of our best efforts.
"French and English" by Evelyn Everett-Green
John, finding they make such poor headway, proceeds to lend his assistance, and under his directions the job is finally completed.
"Miss Caprice" by St. George Rathborne
He could not see that he was making any headway.
"Kenny" by Leona Dalrymple
The fire has not gained headway for fifteen minutes.
"The Gold Hunter's Adventures" by William H. Thomes
Constant ill-health hindered him from making rapid headway with his projected Latin translation.
"Fray Luis de León" by James Fitzmaurice-Kelly
And now it was possible that he might make headway against the divided forces of the Danes.
"King Olaf's Kinsman" by Charles Whistler
In spite of the difficulty the girls were plainly making headway.
"Madge Morton, Captain of the Merry Maid" by Amy D. V. Chalmers
As the light so fell, hoarse voices shouted, and then a concussion shivered through the steamer, and her headway was slackened.
"Idolatry" by Julian Hawthorne
The Fifth Division approached Missy, but were unable to make headway.
"The New York Times Current History of the European War, Vol 1, Issue 4, January 23, 1915" by Various
The wind meanwhile had gradually veered to the southwest, and later to the west, and the grab began to make more headway.
"In Clive's Command" by Herbert Strang
Well, when I finally headed up into it, I could just about hold her, without making any headway to speak of.
"World's War Events, Volume III" by Various
But his son felt that he was making better headway.
"Poor Man's Rock" by Bertrand W. Sinclair
A land wind began to blow, which enabled him to make very fair headway out to sea.
"Buccaneers and Pirates of Our Coasts" by Frank Richard Stockton
I should like to go on as long as I could make headway.
"The Black Cat" by John Todhunter
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In poetry:

Still manfully the dusky warriors strove to make headway,
But the Soudanese troops and British swept them back without dismay,
And their main body were mown down by their deadly fire-
But still the heroic Dervishes refused to retire.
"The Battle of Omdurman" by William Topaz McGonagall

In news:

Berkeley and author of the book Green Illusions, told FoxNews.com that the automotive industry is not making dramatic headway in solving serious environmental problems.
One Facebook "like" equals a $1 donation this month as the Taste of Buffalo presented by TOPS partners with Headway of Western New York Inc to help make a difference in the lives of those who need it most this holiday season.
First Lady Michelle Obama Makes Headway With Healthy Foods.
NHL, players report no headway made in meeting.
Blue Cross overhaul makes headway , raises concerns.
NHL, players' union 'make headway ' on side issues.
State makes headway in fight against meth.
Lowrie making gradual headway .
Mitt Romney Making Headway With Women Voters.
Firefighters Making Headway Against Neb.
2-Year Army Inventory Push Makes Headway .
Hawks' Okung makes headway .
Maryland making jobs headway .
Police chief makes headway .
Bruchey sees ' headway ' toward long-term lease with Suns.
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In science:

Several empirical studies reveal that h corresponds to a temporal headway rather than to a spatial one.
An empirical test for cellular automaton models of traffic flow
We therefore have chosen h to be 6 s as a lower bound for the time-headway.
An empirical test for cellular automaton models of traffic flow
In Fig. 24 the simulated time-headway distributions for different density regimes are shown.
An empirical test for cellular automaton models of traffic flow
Due to the discrete nature of the model, large fluctuations occur and the continuous part of the empirical distribution shows a peaked structure at integer-numbered headways for the simulations.
An empirical test for cellular automaton models of traffic flow
In the free flow state extremely small time-headways have been found, in accordance with the empirical results.
An empirical test for cellular automaton models of traffic flow
Time-headway distribution for different densities in free flow (top) and in the synchronized state (bottom).
An empirical test for cellular automaton models of traffic flow
Therefore we can state that properties like the width as well as the smoothness of the time-headway distribution are strongly dependent on the choice of the simulation setup.
An empirical test for cellular automaton models of traffic flow
Time headways shorter than the chosen unit of time are in case of a parallel update only observed if anticipation effects are included.
An empirical test for cellular automaton models of traffic flow
Because of the exponential decay of the waiting time distribution of cars leaving a jam, the peak at a time of 1 s is the most probable in the time-headway distribution.
An empirical test for cellular automaton models of traffic flow
Fig. 26) deviates from the linear velocity-headway curve of the NaSch model.
An empirical test for cellular automaton models of traffic flow
Due to anticipation effects, smaller distances occur, so that driving with vmax is possible even within very small headways.
An empirical test for cellular automaton models of traffic flow
This strong anticipation becomes weaker with increasing density and cars tend to have smaller velocities than the headway allows so that the OV-curve saturates for large distances.
An empirical test for cellular automaton models of traffic flow
Autocorrelation of the speed and of the spatial and temporal headway for free flowing vehicles (top) and for a synchronized state (bottom).
An empirical test for cellular automaton models of traffic flow
In the free flow regime the data shows a strong coupling of the spatial and temporal headway that supports the results obtained by aggregated data (J ∝ ∆t−1 and ρ ∝ ∆x−1 ).
An empirical test for cellular automaton models of traffic flow
In the synchronized state, longer correlations of the speed and the spatial headways can be observed.
An empirical test for cellular automaton models of traffic flow
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