control day

control day

[kən′trōl ‚dā]
(meteorology)
One of several days on which the weather is supposed (according to folklore) to provide the key for the weather of a subsequent period. Also known as key day.
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References in periodicals archive ?
Efficacy was measured by neurologist-based assessment of motor state and dyskinesia at 30-minute intervals over the 8 hours and by UPDRS Part III, assessed at 0, 2, 4, and 8 hours on the Control Day (Day 2) and the Efficacy Day (Day 4).
We hypothesized that high heat exposures could lead to SIDS, and therefore used the maximum outdoor temperature recorded on the same day and day before a SIDS day or control day as two main exposures.
He said that the situation of water is getting worse and out of control day by day and the government is not even thinking about it.
Moisturise without drenching the skin with Dr Nick Lowe's Oil Control Day Cream Anti Blemish for pounds 14.
BOOTS SHINE CONTROL DAY MOISTURISER (from Boots) This has a creamy texture but is light and non-greasy when you apply it to the skin.
Enacted in 1991 to control day laborers, the law prohibits the solicitation of work, business or contributions from people traveling in motor vehicles.
On the heels of ForeScout's announcement of Enterprise-Grade NAC Covering Up to 400K Endpoints and this year's Network Access Control Day at InterOP'09 in Las Vegas, Gord will present real-world case studies of how NAC is being used and expanded upon in Fortune 500 and government enterprises today.
If a single person completed a second ED visit for asthma on a control day, that is, on the same day of the week during the same month (1% of all cases in our study), we counted the second visit as both a case day and a control day.
For each subject, we chose control days within the same month of the same year that the admission occurred, leaving 2 days between each control day to minimize serial correlation (Schwartz 2004).
We also performed a sensitivity analysis using an alternative selection strategy, with control days being matched on day of the week instead of daily temperature, thus also including the 76 cases that had no temperature-matched control day.