We discuss external and internal graphical and linguistic representational systems. We argue that a cognitive theory of peoples' reasoning performance must account for (a) the logical equivalence of inferences expressed in graphical and linguistic form; and (b) the implementational di erences that a ect facility of inference. Our theory proposes that graphical representations limit abstraction ...

Term rewriting systems with rules of different priority are introduced. The semantics are exp}ained in detail and several examples are discussed. Note: Partial support received from the European Communities under Esprit contract no. 432, Meteor (An integrated formal approach to industrial software development).

soil conservation service (scs) adjusted the kostiakovs infiltration model by adding a constant coefficient, for improvement of estimation. the improved model has three constant parameters, which are difficult to calculate. so scs has taken the third constant parameter as equal to 0.65-0.7 cm to simplify the estimation. this parameter varies in different soil and often outranges the scs estimat...

In this paper, a closed-form identification of possibly nonrninimum phase multichannel moving average (MA) processes is derived by exploiting the eigenstructures of the observation cumulant matrices using ~the ESPRIT algorithm. The proposed approach allows the combination of statistics of different orders for better performance and offers reduced computation complexity when compared with existi...

This paper presents a deadlock avoidance scheme that was developed during the Mascada Project—Esprit LTR Project 22728. The deadlock problem occurs in a car body painting shop. From this application, an abstract problem was derived for which a deadlock avoidance method was developed. The paper presents the deadlock avoidance scheme and its correctness proof. In addition, implementation issues a...

1 I n t r o d u c t i o n The tree pat tern matching approach for code selection has proven very successful. I t allows to specify code selectors using declarative specifications and to derive efficient code selectors automatically. The program which translates the specification into the final code selector program is called code selector generator. Sometimes it is integrated with generators fo...

This paper presents a novel method of formant tracking. It shows that formant information can be extracted from the cepstrum coefficients . Explicit nonlinear formulas has been developed to map psd (power spectral density) of speech signal to formant frequencies. Formants can be tracked by ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques). An ”‘constrained”’ ESPRIT s...