In today's world, services and data are integrated in ever new constellations, requiring the
easy, flexible and scalable integration of autonomous, heterogeneous components into …

Software systems of today are frequently composed from prefabricated, heterogeneous
components that provide complex functionality and engage in complex interactions. Existing …

A publish/subscribe system dynamically routes and delivers events from sources to
interested users, and is an extremely useful communication service when it is not clear in …

Today, the architecture of distributed computer systems is dominated by client/server
platforms relying on synchronous request/reply. This architecture is not well suited to …

Abstract Publish/subscribe (pub/sub) is considered a valuable middleware architecture that
proliferates loose coupling and leverages reconfigurability and evolution. Up to now …

Many strategic IT projects fail, meaning that organisations are unable to reap the benefits of
their IT investments to the fullest extent. One of the key reasons for this failure is the lack of …

Increasingly, one of the most prominent ways to disseminate information on the Web is
through “notifications”(also known as alerts), and as such they are at the core of many large …

Event notification services enable loose coupling and they are therefore becoming an
essential part of distributed systems' design. However, the development of event services …

UrbanSim simulates the development of urban areas, including land use, transportation, and
environmental impacts, over periods of 20 or more years. Its purpose is to aid urban …

Towards having computers understand human users'“context” information, this dissertation
proposes a systematic context-sensing implementation methodology that can easily …