Grid Replica systems are gaining foothold in real end user systems, and are used in an increasing number of large scale projects. As such, many of the properties of these systems are well understood. This paper how to handle some minor shortcomings of todays data replica systems, in respect to consistency management, and to their ability to handle derived data sets. We think that both features ...

The impact of results from Information Theory on todays information technology is illustrated by means of derivations from capacity formula and chain rule. By this, the huge possible increase in power and bandwidth efficiency for transmission of analog source signals via modern digital communication techniques is enlightened. The foundations of modern approaches like OFDM, CDMA, coded modulatio...

Todays computational grids are used mostly for batch processing and throughput computing, where jobs are submitted to a queue, processed, and finally delivered for post-mortem analysis. The glogin tool provides a novel approach for grid applications, where interactive connections are required. With the solution implemented in glogin, users are able to utilize the grid for interactive applicatio...

There is an acute problem concerning lymphoma treatment in Ukraine. Previously, due to unavailability of up-to-date chemotherapy (CT) regimes, only 20% of lymphoma patients had a chance for persistent remission after the treatment, 4060% of patients had response to treatment and only 35% of patients had 5-year survival rates. Todays clinical protocols of therapy in lymphoma patients take into a...

With todays wide acceptance of distributed computing, a rapidly growing number of application domains are emerging, leading to a growing number of ad-hoc solutions, rigid and poorly interoperable. Our response to this challenge is a platform for building flexible and interoperable execution environments (including language and system aspects) called the Virtual Virtual Machine. This paper prese...

A major challenge in todays fast pace world is the acquisition of competence in a timely and efficient manner, whilst keeping the individual highly motivated. This paper presents a novel based on the use of serious games driven by Case Based Reasoning (CBR) tailored by Threshold Concepts (TC) to present the learner with the most efficient choice of game scenarios to address their present compet...

Constraint Propagation can be speeded up significantly by choosing a good execution order for propagators. A propagator is an implicit representation of a constraint which is widely used in todays powerful constraint solvers. In this paper we evaluate different ways to find good execution orders automatically during runtime. We extend previous work in this area by two new techniques: fair-sched...

As mobility permeates into todays computing and communication arena, we envision application infrastructures that will increasingly rely on mobile technologies. Traditional database applications and information service applications will need to integrate mobile entities: people and computers. In this paper, we develop a distributed database framework for mobile environments. A key requirement i...

Malicious web sites perform drive-by download attacks to infect their visitors with malware. Current protection approaches rely on blackor whitelisting techniques that are difficult to keep up-to-date. As todays drive-by attacks already employ encryption to evade network level detection we propose a series of techniques that can be implemented in web browsers to protect the user from such threa...

Todays Web Applications are complex distributed applications, that deploy their functionality to the World Wide Web. In many cases Web Applications have been developed by using an adhoc and unsystematic development process. As a conesquence these applications have a high probability of failure during operation. In order to develop high quality Web Application both the development process and th...