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Continuous Time Intensity  Questionnaire & Report Examples
Note that the above example shows the *optional* live real time graph. Here's a ballot setup options screen
SIMS software express package file: TIMETIC.SIMS2000ExpressPackage.sql.ZIP


CONTINUOUS TIME INTENSITY  REPORTS
SIMS has been enhanced with continuous timeintensity following the guidelines outlined in the ASTM E18 document: ASTM E1909  97(2003) Standard Guide for The TimeIntensity Evaluation of Sensory Attributes.
A few key definitions include:
I max 
Peak Intensity, maximum observed intensity during the time of measurement 
Area after I max 
Postpeak area under the curve 
Area before I max 
Prepeak area under the curve 
AUC 
Area under the curve (total) 
Rate of increase 
Rate of intensity increase before peak intensity (slope) 
Rate of decrease 
Rate of intensity decrease after peak intensity (slope) 
T init 
Time of initial exposure, typically when clock starts 
T onset 
Time point when the sensation is first perceived after initial exposure 
T max 
Time to reach maximum intensity of the sensation after exposure 
T plateau 
Duration of peak intensity 
T dur 
Duration time of sensation 
T ext 
Time to extinction, Time when the sensation can no longer be perceived 
T trun 
Truncate Time 
SIMS uses the same flexible Line Scales for Time Intensity data collection. Data reporting and analysis includes textual summary and detail reports, individual panelist timeintensity graphs, entire panel timeintensity graphs (using key curve parameters method) and Curve Parameter Analysis Summary using Panel Means by Sample with Significance Test (pvalue).


Continuous Time Intensity

SIMS Continuous TimeIntensity follows the guidelines outlined in the 1997 ASTM E18 document:
ASTM E1909  97(2003) Standard Guide for The TimeIntensity Evaluation of Sensory Attributes.
SIMS uses the same flexible Line Scales for Time Intensity data collection.
Data reporting and analysis includes textual summary and detail reports, individual panelist
timeintensity graphs, entire panel timeintensity graphs (using key curve parameters method)
and Curve Parameter Analysis Summary using Panel Means by Sample with Significance Test (pvalue).
SIMS uses SAS to generate the stats output columns for pvalues and sample separation letters.
A few key definitions include:
I max: Peak Intensity, maximum observed intensity during the time of measurement
Area after I max: Postpeak area under the curve
Area before I max: Prepeak area under the curve
AUC: Area under the curve (total)
Rate of increase: Rate of intensity increase before peak intensity (slope)
Rate of decrease: Rate of intensity decrease after peak intensity (slope)
T init: Time of initial exposure, typically when clock starts
T onset: Time point when the sensation is first perceived after initial exposure
T max: Time to reach maximum intensity of the sensation after exposure
T plateau: Duration of peak intensity
T dur: Duration time of sensation
T ext: Time to extinction, Time when the sensation can no longer be perceived
T trun: Truncate Time
Analyze Key Curve Parameters
SIMS is designed to use SAS statistics to generate the statistical output columns
for pvalues and sample separation letters. Straight forward GLM procedure, X1X14.
Advanced, Data Edit
Hopefully you should rarely need to edit individual Continuous Time Intensity Data.
1 Data Set via Excel. You can edit one at a time, i.e. a panelist sample single attribute's Observations.
Flexibility exists for Copynpasting from one panelist to another, one sample to another, etc.
Proceed with caution. Consider practicing with a 'Copy' of your real SIMS Test Result Code.
All of these advanced edit import events will be fully logged by the SIMS system event logs.
General Use Instructions:
 Export to Excel ONE Data Set you would like to Edit. One panelist one completed TI attribute.
 Make your editing changes in Excel and only within the Response Column.
 Select (highlight) just the Response Column. Do not select any other columns.
For your current Attribute named Sweetness (Continous Time Intensity), is expecting 600 Rows.
 Copy to Clipboard (use Edit Copy, or CTRLC from within Excel).
 From your SIMS System, press button for Excel Import.
Options

Chart Data Rows.
100 data points or actual number of data points per panelists.
Refers to the number of data points, per panelist, to send to the graphics program area.
Your graphs will look almost exactly the same whether you use either 100 data points or the much bigger actual number.
Example: Number of data points per panelists = Duration of TI in seconds * increments.
600 data points = 1 minute of .1 second increments = 60 * 10
1200 data points = 2 minutes of .1 second increments = 120 * 10
The default for SIMS is to use 100 data points, creates the graphs much quicker.
FAQ

Question: My sample average graph highest point does not match my data's IMAX average which I can see in the statistics anova tabled report, why? (or I calculated in Excel)
Answer: Yes, and as expected. It's all about TIME.
Because the graph shows TIME on the horizontal axis. Your Panelists had differing IMAX's at different Times, i.e. differing time slices.
The tabled calculated average figure is for all panelist's IMAX, no matter when IMAX occurred (i.e. the horizontal time).
The tabled calculated average figure does *not* take TIME into account, the graph does! The graph shows averages at each time slice.
The tabled calculated average figure will always be greater then the high point of the graph (yaxis) because of TIME on the graph's xaxis.
Note 'IMAX' term used interchangeably with 'Peak Intensity'.
More Information on Sensory Computer Systems Website:
http://www.SIMS2000.com/QuestionnaireContinuousTimeIntensity.asp
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