Ivana Ognjanovic

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In reality, many of the stakeholders' decisions about their desirable requirements can be dependent on other internal or external factors. Such dependencies entail conditionality between the requirements that have been defined, e.g., a requirement is desirable for the stakeholders only if a certain condition is met or some other requirements are excluded.(More)
Business process families provide an over-arching representation of the possible business processes of a target domain. They are defined by capturing the similarities and differences among the possible business processes of the target domain. To realize a business process family into a concrete business process model, the variability points of the business(More)
This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may(More)
Representing and reasoning over different forms of preferences is of crucial importance to many different fields, especially where numerical comparisons need to be made between critical options. Focusing on the well-known Analytical Hierarchical Process (AHP) method, we propose a two-layered framework for addressing different kinds of conditional(More)
One of the most common requirements in the software development projects is imposed by early estimation of the complexity and total costs. Various methods exist and they are constantly changing in order to enable faster and more comprehensive work and more accurate results. In this work authors present possible extension of Function Point Analysis, as one(More)
The complexity and heterogeneity of “big data” sets in health systems are difficult to process using common database management tools or traditional processing applications. Stimulated by the promising solutions of Semantic Web for addressing the problems of management and monitoring of services shared by different parties, the(More)
Personal Learning Environments (PLEs) are systems that help learners take control of and manage their own learning; allows learners to interact with diverse systems, tools, and services to access content, assess his/her knowledge, collaborate with other learners, etc. Research and development in recent years produced user-familiar environments for PLEs and(More)
Cloud Computing is a new paradigm for the IT industry. IT services such as infrastructures, platforms and applications are provided remotely, over the Internet, and all resources are virtualized. Challenges about confidentiality, integrity, authenticity, and non-repudiation are still opened representing the main concerns that reduces the growth of cloud(More)
Quintessence is based on the five elements that, according to the alchemists, make up the world: fire, water, earth, air, and the mythical substance aether. Aristotle included it as a fifth element distinct from the other four. It is believed to be the substance that fills the region of the universe above the terrestrial sphere and forms the heavenly bodies.
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