Ariadne - Technical description
A820 |
Determine start intervals |
1. Description
In the ICF rules, minimum start intervals are prescribed. These are 45 sec. for K1 and C1 and 120 sec. for teams. In practise, start intervals can get longer, and in some cases sorter.
For a precise event scheduling, it is necessary to have a good estimate of the actual start intervals, in order to give a good estimate of the required time for an event. The Ariadne function A820-Determine-start-intervals calculates the average start interval per category on basis of the start time stamps of the current competition, and stores these in the table T880-Start-interval in Ariadne-Archive. Start intervals are dependent on category and slalom course. With planning a new competition, only the start intervals of a comparable earlier competition can be used as a good estimate.
Design decisions:
1)To calculate the average start intervals, a the temporary table
T081-SI-Temp is required to store the individual intervals of two adjacent
start events. With this table the average interval per category is calculated.
In order to have this average not influenced by pauses in the event execution
(for whatever reason), intervals > 360 seconds (6 minutes) are excluded
from the calculation.
2) An individual start interval is assigned to the competing unit which causes this interval. E.g. A Men-Senior is waiting at the start for a Men-Junior (must slower than the senior), completing the course. The start interval between these two starts must be assigned to the Men-Junior as the one who causes the interval.
( In calculating the average start interval, correct values of T510!start-time-stamp are important. In an earlier design, the T510!start-time-stamp was also updated in some status changes, in which case the start-time-stamp becomes impure. In order the separate the start-time-stamp from status-time-stamps, in tabel T510-Run a status-time-stamp was added, so that the start-time-stamp contains only real start events.)
2. Access path
 F000-Menu |
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 F820-Determine-start-intervals |
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| P820-Determine-start-intervals |
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| F822-Startintervals |
3. Function structure
| Form | Control | Action | Query | Table | Attribute |
| F820-Determine-start-intervals | Q100-Current-competiton | T100-Current-competition | |||
| listbox CurrentCompetition |
Q100-Current-competiton | T100-Current-competition | |||
| button *) ButtonDetermineStartIntervals |
P820_Determine_start_intervals (see below) |
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| button ButtonShowStartIntervals |
connects to: F822-Start-intervals (see below) |
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| button ButtonClose |
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| Event | Action | Query | Table | Attribute | |
| form_activate | check if start intervals are already archived for the current competion, give status information and set the visibility of the buttons accordingly | T880-Start-interval |
*) Hidden behind the ButtonShowStartIntervals
| Module | Function | Action | Query | Table | Attribute |
| P820-Determine-start-intervals | P820_Determine_start_ intervals | Q081-Start-interval-calculation |
T040-Category T500-Competing-unit T510-Run |
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| Q082-Average-start-intervals | T040-Category T081-SI-temp Q100-Current-competition |
| Form | Control | Subform | Query | Table | Attribute |
| F822-Start-intervals | Q820-Start-intervals | T100-Current-competition T840-Archived-category T880-Start-interval |
Change history
| date | Ariadne version | change |
| 10 Apr 2004 | 4.2.0 | Updated to other archiving functions |
| 01 Nov 2002 | 4.1.0 | text converted to html |