The scope of this preliminary study is to analyse the web
accessibility requirements that correspond to the perceivable
principle. This principle states that users must be able to
perceive both the information being presented to them, as well
as the user interface. That is, information and interface can not
be invisible to all of their able senses [17].
The steps performed for the analysis of the perceivable
principle are:
1) Identify the categories of web accessibility requirements
for elderly users according to the type of impairment
they address to
2) For each category, identify the success criteria along
with their level and their test procedures (if any).
3) For those success criteria without documented failures,
define failure check steps.
4) For each category, add the extra requirements and define
their failure check steps.
5) Use the data set to manually execute test procedures for
a success criterion to define conformance (C) or failure
(F) of the test pages of the data set, and register the
results in the analysis database.
6) Use the data set to manually execute checking steps for
an extra requirement to define the conformance (C) or failure (F) of the test pages of the data set, and register
the results in the analysis database.
The scope of this preliminary study is to analyse the webaccessibility requirements that correspond to the perceivableprinciple. This principle states that users must be able toperceive both the information being presented to them, as wellas the user interface. That is, information and interface can notbe invisible to all of their able senses [17].The steps performed for the analysis of the perceivableprinciple are:1) Identify the categories of web accessibility requirementsfor elderly users according to the type of impairmentthey address to2) For each category, identify the success criteria alongwith their level and their test procedures (if any).3) For those success criteria without documented failures,define failure check steps.4) For each category, add the extra requirements and definetheir failure check steps.5) Use the data set to manually execute test procedures fora success criterion to define conformance (C) or failure(F) of the test pages of the data set, and register theresults in the analysis database.6) Use the data set to manually execute checking steps foran extra requirement to define the conformance (C) or failure (F) of the test pages of the data set, and registerthe results in the analysis database.
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