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To effectively cope with correctness issues of concurrent and timed systems, the use of formal tools is mandatory. This paper proposes an original approach to modeling and exhaustive verification of Java-based concurrent systems which relies on the popular UPPAAL model checker. More precisely, a library of UPPAAL timed automata (TA) reproducing the semantics of major Java concurrent and synchronization...
Publicly available Web search engines suffer from several limitations, which significantly reduce usability in particular cases. The most important limitations are out-of-date information, very simple query language and limited number of results. In many cases, users of the Internet are interested in finding new information which appear in the particular Web portal. In this paper, a system for monitoring...
Horizon scanning is being increasingly regarded as an instrument to support strategic decision making. It requires the systematic examination of information to identify potential threats, emerging issues and opportunities to improve resilience and decrease risk exposure. Horizon scanning can use the Web to augment the acquisition of information, though this involves a search for novel and emerging...
This paper presents a model of a navigation system in a public information system, that can be used to improve the structure and content of the information repository via self-organization capabilities based on social interaction. This model has the primary goal of establishing a generic and adaptive social-based self-structuring navigation system. To achieve this goal, the model integrates the concepts...
In recent years, smart-devices became very popular among people of all ages around the world. Very important is especially their usage in health applications. Special Body Area Network (BAN) for the stress monitoring is currently being developed within the authors' department. Android-based smartphone is employed as the main control unit of the sensor network built on the star architecture. Since...
Bullwhip effect (BWE) refers to the accumulation of stock flowing up and down along the supply chain management (SCM). It reduces the operating efficiency of the chain and blocks the operating resources. Some of the common causes of BWE are demand order variations, long lead times, competence defects between supply chain links, lack of communication among links in the chain, etc. There have been efforts...
This article presents results of designing a Content Delivery Network monitoring system for resource limited applications. CDN monitoring is important both for content providers (media companies) and administrators (Internet Service Providers). It is a challenging task since network traffic may generate huge volume of data which must be parsed and analysed in real-time. This paper describes the design...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.