in a speech community, people utilize their communicative competence which they have acquired from their society as part of their distinctive sociolinguistic identity. they negotiate and share meanings, because they have commonsense knowledge about the world, and have universal practical reasoning. their commonsense knowledge is embodied in their language. thus, not only does social life depend...

1. The norm || • || in a Banach algebra A is said to be minimal [l ] if, given any other norm || •||1 in A (with respect to which A need not be complete), the condition ||a||iá||a|| for each oG^4 implies that ||a[|i = ||a||. We shall say that || •|| is absolutely minimal if, given any other norm ||-||i whatever in A, then ||a||iè||a|| for each aEA. An absolutely minimal norm is of course minima...

In this paper symbolic quantifier elimination methods are used to explore the fragility of feedback compensators, and to design feedback systems with non-fragile compensators. A compensator is said to be fragile if given variations in compensator parameters result in significant deterioration of feedback performance. The issue of fragility is important in understanding the level of acurracy req...

BACKGROUND Primary leptomeningeal melanocytic neoplasms of the central nervous system are rare. Multifocal lesions typically occur in the setting of cutaneous melanosis. We present the first report of a posterior fossa melanocytoma and subcutaneous melanocytoma of intermediate grade in the absence of cutaneous melanosis. CASE DESCRIPTION We present the case of a 22-year-old male with decrease...

OBJECTIVE To describe the clinical features of ocular melanosis in Cairn Terriers. ANIMAL STUDIED One hundred and fourteen Cairn Terriers diagnosed with ocular melanosis. PROCEDURES A complete eye examination was performed on each dog. Four dogs (and two unaffected control dogs) underwent a high frequency ultrasound examination of the anterior segment. The pedigrees of affected dogs were an...