Syntax: An abstract description of the entities that form a model of the respective language. Static Semantics (context conditions, constraints) : Well-formedness conditions between the syntactic entities, such as absence of circular inheritance. Dynamic Semantics (denotation): The (operational) behavior of the entities of the speci cation, such as I/O, reaction to stimuli, e ect of executing a...

Bulatov (2008) and Dyer and Richerby (2010) have established the following dichotomy for the counting constraint satisfaction problem (#CSP): for any constraint language Γ, the problem of computing the number of satisfying assignments to constraints drawn from Γ is either in FP or is #P-complete, depending on the structure of Γ. The principal question left open by this research was whether the ...

Fig. 1 The “standard model” of basic and applied research Editor in Chief: Cognitive Research: Principles and Implications Cognitive Research: Principles and Implications (CRPI) is a new journal with ambitions. Not only do we want to publish first-rate cognitive research, we want to change the standard way that our discipline thinks about basic and applied research. The standard view is dichoto...

AIMS To evaluate the predictive value and optimum dichotomy limits for different combinations of prognostic indicators for the prediction of arrhythmic events and cardiac mortality in post-infarction patients. BACKGROUND Studies of new interventions based on risk stratification after myocardial infarction have often used a single variable as a predictor of risk. However, whether the dichotomy...