Power estimation and optimization has become a key issue in embedded system design, especially in the rapidly growing market of mobile handheld computing, communication, internet devices that are driven by battery power. It is of paramount importance to estimate and optimize power of those systems during an early design stage at a high level of abstraction in order to efficiently explore the de...

An exuberant space age is emergent, which is likely to see many compact yet innovative explorations much beyond imagined in the past requiring a reusable and sharable space communication infrastructure. Currently proposed space communication architectures mainly suffer from three design drawbacks high cost, narrowed scale and lack of concise geographical organization. Therefore, there has been ...

In this thesis we further develop the theory of synchrony and Synchronic Modal Equivalencing (SME), as applied to models of power system dynamics. First, we extend the SME partitioning algorithm to include the grouping of load buses. The generalized eigenanalysis setup previously used for load bus grouping in slow coherency is adapted to the synchrony framework. The extended SME partitioning al...

Circle packing can be seen as the art of placing tangent circles on the plane, leaving as little unoccupied space as possible. Circle packing is a very attractive field of mathematics, from several points of view. It contains interesting and complex questions, both mathematical and algorithmical, and keeps its properties through a wide range of geometric transformations. There are several ways ...

In this paper I will examine the geography of one particular type of virtual reality virtual worlds. They are publicly available on the Internet and are designed for social interaction in real-time. The two key elements of these systems that move them beyond conventional computer-mediated communication channels into the realm of virtual reality are the shared graphical environment in which inte...

A real-valued evolutionary optimisation scenario affords a unique opportunity to render visually explicit the “landscape” metaphor in the concept of fitness landscape.

We discuss the methodological foundations for our work on the development of cognitive architectures, or control systems, for situated autonomous agents. Our focus is the problems of developing sensorimotor control systems for mobile robots, but we also discuss the applicability of our approach to the study of biological systems. We argue that, for agents required to exhibit sophisticated inter...

BACKGROUND Treatment of a number of complications that occur after abdominal surgeries may require that Urgent Abdominal Re-explorations (UARs), the life-saving and obligatory operations, are performed. The objectives of this study were to evaluate the reasons for performing UARs, outcomes of relaparotomies (RLs) and factors that affect mortality. METHODS Demographic characteristics; initial ...

Sentence fusion is a text-to-text (revision-like) generation task which takes related sentences as input and merges these into a single output sentence. In this paper we describe our ongoing work on developing a sentence fusion module for Dutch. We propose a generalized version of alignment which not only indicates which words and phrases should be aligned but also labels these in terms of a sm...