Supporting effective and enjoyable Web usage by people with sensory, motor and cognitive impairments requires more than just accessible Web content. There is an additional task of matching people with an accessibility solution that best accommodates their particular needs -which, especially for older Web users, may fluctuate in severity, number and combination. Lack of awareness of one's own accessibility needs and the solutions that may exist to accommodate them may lead to a reduced quality Web browsing experience or even abandonment.This paper discusses the difficulties in matching people with less severe, but multiple, impairments with the most appropriate accessibility features at a given time, and explores the role of automated or semi-automated adaptations as a solution for this problem. We review related work, and report on the early stages of our own work conducted to prove the concept of adaptations for accessibility in the specific context of supporting Web users with age-related capability decline. We also consider the potential ethical issues of automated and semi-automated accessibility adaptations on the wellbeing of older Web users, and how these might best be managed in a suitably sensitive way.

No abstract

In this paper we use a previously developed RED [9]. In particular, one of the goals of RED is to stabilize the (Random Early Detection) model to analyze and develop a queue lengths in the routers, but the current version of RED quantitative approach of defining one of the RED parameters, does not succeed in this goal because the stead-state queue average queue weight, while the network load level varies. First, g we introduce the linear control system and the pre-developed lenth ongly de o n the numberpofsactive TC RED model. Based on this model, we next develop a proposition connections. On the other hand, the system response time is aiming at the RED parameter, average queue weight, and the also an aspect to measure the RED stability, as the quicker the load level only, to ensure the system stay stable. Our research is queue gets to a stable length, the better the system would intended to provide a quantitative basis for parameterizing RED perform. while load level varies. We present ns simulations to support our Parameter setting remains a critical open problem today analysis.

No abstract

No abstract