We study the existence of solutions anH-system for a revolution surface without boundary for H depending on the radius f . Under suitable conditions we prove that the existence of a solution is equivalent to the solvability of a scalar equation N(a) = L/√2, where N : ⊂ R+ → R is a function depending on H . Moreover, using the method of upper and lower solutions we prove existence results for so...

Let be a nite alphabet, and let h : ! be a morphism. Finite and innnite xed points of morphisms | i.e., those words w such that h(w) = w | play an important role in formal language theory. Head characterized the nite xed points of h, and later, Head and Lando characterized the one-sided innnite xed points of h. In this paper, we complete the characterization of xed points of morphisms by descri...

An experiment investigated whether exposure to orthography facilitates oral vocabulary learning. Fifty-eight typically developing children aged 8-9 years were taught 12 nonwords. Children were trained to associate novel phonological forms with pictures of novel objects. Pictures were used as referents to represent novel word meanings. For half of the nonwords children were additionally exposed ...

This paper explores the relative contributions made by orthography, syllabic segment, and lexical tone in the word recognition and retrieval process. It also challenges recent assumptions regarding the role of orthography and tones in mental lexicon architecture. Using an implicit priming paradigm, a word recognition experiment was conducted with native speakers of two tonal languages, Chinese ...

INTRODUCTION The orthographic depth hypothesis (Katz and Feldman, 1983) posits that different reading routes are engaged depending on the type of grapheme/phoneme correspondence of the language being read. Shallow orthographies with consistent grapheme/phoneme correspondences favor encoding via non-lexical pathways, where each grapheme is sequentially mapped to its corresponding phoneme. In con...