منابع مشابه
Jack Horner
assess their own thought processes in an internal dialogue similar to reasoned debate among group members; and to represent features of the world, not just as your perspective or my perspective, but as objectively true, as facts. Evolutionary psychology is a crowded market. There’s no shortage of books telling a story about how chimp-like ancestors turned into modern humans. A Natural History o...
متن کاملCompensated Horner Scheme
We present a compensated Horner scheme, that is an accurate and fast algorithm to evaluate univariate polynomials in floating point arithmetic. The accuracy of the computed result is similar to the one given by the Horner scheme computed in twice the working precision. This compensated Horner scheme runs at least as fast as existing implementations producing the same output accuracy. We also pr...
متن کاملHorner syndrome: clinical perspectives
Horner syndrome consists of unilateral ptosis, an ipsilateral miotic but normally reactive pupil, and in some cases, ipsilateral facial anhidrosis, all resulting from damage to the ipsilateral oculosympathetic pathway. Herein, we review the clinical signs and symptoms that can aid in the diagnosis and localization of a Horner syndrome as well as the causes of the condition. We emphasize that ph...
متن کاملOn the Multivariate Horner Scheme
We present an eecient version of the Horner scheme for the evaluation of multivariate polynomials and study its stability properties. In particular, we show that the backward error of evaluation is bounded by a quantity that is linear in the total degree of the polynomial, which itself is usually signiicantly smaller than the number of operation involved in the evaluation process. Moreover, we ...
متن کاملCervical Disc Herniation and Central Horner Syndrome Hérnia de disco cervical e síndrome de Horner central
Horner syndrome, or oculosympathetic dysfunction, was described by the Swiss ophthalmologist Friedrich Horner in 1869,1 and represents the interruption of the cervical sympathetic nervous system. It is characterized by a symptom triad: ptosis (upside down ptosis), pupillary miosis and facial anhidrosis, although some authors associate a fourth symptom to the syndrome, facial hyperemia.2 It is a...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2014
ISSN: 0960-9822
DOI: 10.1016/j.cub.2014.02.015