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/Contents (1 Introduction\rIn the last years, the design and development of informa\
tion systems have sig-\rnificantly changed due to new network architectu\
res and devices, which increase\rthe number of distribution channels ava\
ilable for delivering of information or\rservices. In the anytime/anywhe\
re/anyone paradigm [18], a novel generation of\rapplications [9] modify \
themselves according to the change of context, or to spe-\rcific applica\
tion constraints; for example, adaptive hypermedia applications [5, 1,\r\
20] modify data presentation according to the specific client browser ca\
pability.\rThe goal of this paper is to present an architecture of a ref\
lective adaptive system\rand adaptation strategies at dierent levels. F\
irst, we consider the possibility of\rmodifying the distribution channel\
by means of adaptive information systems\rbased on reflective architect\
ures. The principle of reflection [10] is mainly stud-\ried in the progr\
amming language community and it consists in the possibility of)
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