Nikola Milanovic

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In the world where on-demand and trustworthy service delivery is one of the main preconditions for successful business, service and business process availability is of the paramount importance and cannot be compromised. For that reason service availability is coming into central focus of the IT operations and management research and practice. Still, our(More)
Mobile ad hoc networks remove the dependence on a fixed network infrastructure by treating every available mobile node as an intermediate switch, thereby extending the range of mobile nodes well beyond that of their base transceivers. We present four manet routing algorithms along with a hybrid approach, discuss their advantages and disadvantages, and(More)
Service-oriented architecture (SOA) is focused on building loosely coupled distributed systems with minimal shared understanding among system components. The main building blocks in SOA are services. Services are selfdescriptive, self-contained, platform-independent and openly-available components that interact over the network. The main goal of SOA is(More)
We explore possibility of manual and automated contract extraction from Java classes and Enterprise Java Beans. Contracts are extended component interfaces that are defined using Contract Definition Language. They describe functional and non-functional properties. We examine how to extract hidden contracts and express them formally,modeling software(More)
Design of service-oriented applications differs from design of the component-based applications in granularity, level of abstraction and dynamic environment in which binding between clients and servers takes place. Service engineering design patterns are introduced as ”best practice solutions” to common recurring problems that designers face when developing(More)
We propose a model-based methodology for integration of heterogeneous distributed systems, based on the multi-level modeling abstractions, automated conflict analysis and connector code generation. The focus in this paper is on the metamodeling foundation necessary for this process, and consequently we introduce computation independent, platform specific,(More)
We describe our experience creating a robots community using standard hardware and software – the Windows CE operating system, XScale development boards, and LEGO Mindstorm actuators. We focus on an open and extendable distributed robotics system, which in contrast to most existing proprietary robotics systems, supports cost-effective integration and(More)
We investigate architectural properties required for supporting automatic service composition. First, composable service architecture will be described, based on modeling Web services as abstract machines supported by formally defined composition operators. Based on the proposed infrastructure we give several options for achieving automatic service(More)