منابع مشابه
On the growth and form of shoots.
Growing plant stems and shoots exhibit a variety of shapes that embody growth in response to various stimuli. Building on experimental observations, we provide a quantitative biophysical theory for these shapes by accounting for the inherent observed passive and active effects: (i) the active controllable growth response of the shoot in response to its orientation relative to gravity, (ii) prop...
متن کاملOn Growth and Form of Narrative Structures
Narrative is firstly a formal organization, but it is a form that interprets the events giving them meaning. Starting from a reinterpretation of the classical Morphology of the Folktale by Vladimir Propp, we can now note how narrative form and cultural meanings interact with each other. Thus, we remove the “formal” dimension from its traditional segregation to a universe of insubstantial non-th...
متن کاملon semihypergroups and hypergroups
in this thesis, first the notion of weak mutual associativity (w.m.a.) and the necessary and sufficient condition for a $(l,gamma)$-associated hypersemigroup $(h, ast)$ derived from some family of $lesssim$-preordered semigroups to be a hypergroup, are given. second, by proving the fact that the concrete categories, semihypergroups and hypergroups have not free objects we will introduce t...
15 صفحه اولOn the relations among product-form stochastic models
Product-form stochastic models are characterized by a Markovian stochastic process that fulfills a set of properties that allows an efficient steady state analysis. According to this approach, the model is decomposed into several components. Each of these components has an associated stochastic process that is in general much simpler than the joint one. The product-form property states that the...
متن کاملOn product-form approximations of cooperating stochastic models
Models with product-form solutions for steady-state distributions have been studied for decades by the community of performance evaluation. The main criticism of this line of work is that, in practice, results are not always applicable because only a limited subset of systems enjoys this property, which appears seldom in real complex computer systems. In this paper, we aim to enlarge the applic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1966
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.56.5.1497