Описание: Sobre la historia del voseo, o el uso informal del pronombre «vos» y su morfologia, se han hecho estudios con datos restringidos a cortos periodos de tiempo, lo que imposibilita el conocimiento global de su desarrollo linguistico. Este libro ofrece una exposicion completa de la evolucion historica del voseo en la region andina de Colombia desde el siglo XVI hasta el XX, en contraste con el mundo hispano. Vos evoluciona a partir de un pronombre latino plural hacia uno singular de respeto, que se populariza como tratamiento familiar en el siglo XVI y se estigmatiza. Desaparece de la escritura desde mediados del siglo XVII hasta principios del siglo XIX (periodo latente). Este libro documenta voseo en el periodo latente; realiza un analisis cuantitativo de los contextos linguisticos y sociales de voseo en obras literarias y cartas privadas; y delinea la evolucion morfologica. De esta manera, no solo ofrece datos novedosos para los investigadores interesados en las formas de tratamiento en espanol y sus origenes, sino que hace un planteamiento metodologico de utilidad para sociolinguistas, filologos y analistas del discurso.
Автор: Collazos Nйstor Cataсo Название: Java Software Development with Event B: A Practical Guide ISBN: 1681736896 ISBN-13(EAN): 9781681736891 Издательство: Mare Nostrum (Eurospan) Рейтинг: Цена: 7900.00 р. Наличие на складе: Нет в наличии.
Описание:
The cost of fixing software design flaws after the completion of a software product is so high that it is vital to come up with ways to detect software design flaws in the early stages of software development, for instance, during the software requirements, the analysis activity, or during software design, before coding starts.
It is not uncommon that software requirements are ambiguous or contradict each other. Ambiguity is exacerbated by the fact that software requirements are typically written in a natural language, which is not tied to any formal semantics. A palliative to the ambiguity of software requirements is to restrict their syntax to boilerplates, textual templates with placeholders. However, as informal requirements do not enjoy any particular semantics, no essential properties about them (or about the system they attempt to describe) can be proven easily. Formal methods are an alternative to address this problem. They offer a range of mathematical techniques and mathematical tools to validate software requirements in the early stages of software development.
This book is a living proof of the use of formal methods to develop software. The particular formalisms that we use are EVENT B and refinement calculus. In short: (i) software requirements as written as User Stories; (ii) they are ported to formal specifications; (iii) they are refined as desired; (iv) they are implemented in the form of a prototype; and finally (v) they are tested for inconsistencies. If some unit-test fails, then informal as well as formal specifications of the software system are revisited and evolved.
This book presents a case study of software development of a chat system with EVENT B and a case study of formal proof of properties of a social network.
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