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Parameters

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By tapping on Parameters the app switches to the Parameters screen. Here you can set the Fatigue Model Parameters, the Duty Time Parameters and the Outside Circadium Rythm Correction.
The algorythm and calculations are explained on the Info page. This page only comments on setting the parameters.

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The Fatigue Model Parameters that can be altered are the following:
Prior 24 hrs Factor; the base model uses a standard factor of 4. This can be adjusted for individual characteristics. (e.g. if you can handle less sleep than 5~6 hrs in the last 24 hrs very well you may reduce this factor). The limits for setting this factor are minimum 3 and maximum 5.
Prior 48 hrs Factor; the base model uses a standard factor of 2. This can be adjusted for individual characteristics. (e.g. if you can handle less sleep than 10~14 hrs in the last 24 hrs very well you may reduce this factor). The limits for setting this factor are minimum 1.5 and maximum 2.5.
Max Score - Prior 24 hrs - Score 0 Hour; the base model uses 4 x every hour less than 5 hours in the last 24 hours. Fatigue Risk Management System (FRMS) business rules sometimes differ from this. The App offers the flexibility to set the "Rule1 calculations" in accordance with your FRMS.
Max Score - Prior 48 hrs - Score 0 Hour; the base model uses 2 x every hour less than 12 hours in the last 48 hrs. Fatigue Risk Management System (FRMS) business rules sometimes differ from this. The App offers the flexibility to set the "Rule2 calculations" in accordance with your FRMS.
Awake > Prior 48 Factor; the base model uses a standard factor of 1 for every hour longer awake than sleep in the past 48 hours. This can be adjusted for individual characteristics. (e.g. if you can handle staying awake very well you may reduce this factor). The limits for setting this factor are minimum 0.8 and maximum 1.2.
Awake Count Reset; you can set after how many hours of consecutive sleep, the cumulative time awake will be reset to zero (for "Rule3 calculation"). This can be set in the range from 1 to 6 hours of sleep.
Fatigueing Activity; you can set the factor for how many hours awake, 1 hour of fatigueing activity will account for, (for "Rule3 calculation"). The limits for setting this factor are minimum 1 and maximum 3.

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The Duty Time Parameters that can be altered are the following:
Max Duty Time Day; to set the maximum cumulative duty time during Day time until a mandatory rest will be indicated.
Max Duty Time Night; to set the maximum cumulative duty time during Night time until a mandatory rest will be indicated. These max duty times can be set in the range from 4 to 24 hours.
Night Time =; to set the time frames for Night time hours. This can be set from 17 to 02 hours until 04 to 09 hours.
Average D&N Limits determines if the limits are applied for any hour of duty within the Day or Night time bracket or that the limits are applied in ratio of the duty hours accumulated within the day or Night time bracket and its applicable limit. (For example if Max Duty Time Day = 14 and Max Duty Time Night = 10 the mandatory Rest will apply if total duty time = 12 hours, when during Day time bracket 7 hours duty time is accumulated and 5 hrs during Night time bracket. [ 7/14 + 5/10 >= 1]).
Mandatory Rest; to set the number of hours of mandatory rest. If set to zero the App will indicate a mandatory rest equal to the cumulative duty time. This can be set in the range from 0 to 24 hours.
Duty Count Reset; set the amount of non duty time ('Rest') after which the cumulative duty count is reset to zero. The limits for this parameter are minimum 2 and maximum 12.
Rest before Reset = Duty; if this is set to ON any non duty time ('Rest') will count towards cumulative duty (until the amount of Duty Count Reset of non-Duty time is accumulated).

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If Outside Circadium Rythm Correction is set to ON the following parameters will go into effect:
Outside C.R. Factor; the factor that indicate the effectivity of an hour of sleep if it was outside circadium rythm. The limits for this factor are minimum 0.5 and maximum 1. (effectivity range from 50% to 100%)
Sleep in C.R. if asleep on same time; the App will, for every hour of sleep, look back for a number of natural days to check if the activity also was Sleep at the same hour. If it was not in accordance with the minima set, that hour of sleep will count as the effectivity as set on the Outside C.R. Factor. The options for these minima are:
  3 times in the past 3 days
  3 times in the past 4 days
  4 times in the past 4 days
  4 times in the past 5 days
  5 times in the past 5 days