The analysis of performability for large and complex computer systems during design phase, although difficult, is an important activity which contributes to reducing lead times. A pre-requisite of analysis is modelling and a decomposition technique is described. This technique enables the designer to divide the system’s function successively into smaller sub-functions and to treat each sub-func...

Facial variation divides into a number of functional subspaces. An improved method of measuring these was designed, within the space defined by an Appearance Model. Initial estimates of the subspaces (lighting, pose, identity, expression) were obtained by Principal Components Analysis on appropriate groups of faces. An iterative algorithm was applied to image codings to maximise the probability...

Architecture description languages (ADLs) are widely used to describe system architectures. Bass et. al. (1988) describe the main features of these languages. Components and connectors are the main elements of ADLs and include rules and guidelines for well formed architectures. The output of the architecture description process is the system architecture documents. This consists of a number of ...

In two experiments we measured object recognition performance as a function of delay. In Experiment 1 we presented half of an image of an object, and then the other half after a variable delay. Objects were subdivided into top versus bottom halves, left versus right halves, or vertical strips. In Experiment 2 we separated the low (LSF) and high spatial frequency (HSF) components of an image, an...

Paper has the potential to dramatically reduce cost of electronic components but integration materials is challenging. Here NbSe2, a van der Waals superconductor, on paper demonstrated.

Component adaptation is widely recognised to be one of the crucial problems in Component-Based Software Engineering (CBSE). We present here a formal methodology for the soft adaptation of components presenting mismatching interaction behaviours. The notions of access rights (associating components with the services they are allowed to use), and sub-servicing (providing alternative services in p...

Propolis is a resinous substance collected by bees from plants with a complex and variable chemical composition. Propolis and its fractions possess multiple biological activities. This study focused on a chemical and statistical comparison between four Tunisian Propolis Essential Oils (PEO) and its antioxidant activities. Volatile oils were extracted by hydrodistillation a...

This paper describes the DeSRL system, a joined effort of Yahoo! Research Barcelona and Università di Pisa for the CoNLL-2008 Shared Task (Surdeanu et al., 2008). The system is characterized by an efficient pipeline of linear complexity components, each carrying out a different sub-task. Classifier errors and ambiguities are addressed with several strategies: revision models, voting, and rerank...

We present a framework for building complex interactive systems from simple components with particular attention to the development of Knowledge Based Front Ends to software packages The work is motivated from problems with the interactions of GLIMPSE and FAST two Knowledge Based Front Ends developed using logic programming tools and techniques To avoid the pitfalls of GLIMPSE and FAST but to k...

The primary issue involved in image and signal processing is to efficiently remove noise from a digital color image while preserving its features. A fuzzy filter is presented for the reduction of additive noise for digital color images. The filter consists of two sub filters. The first sub filter computes fuzzy distances among the color components of the central pixel and its neighborhood. Thes...