Darko Androcec

• PhD
• Researcher at University of Zagreb

With the development and expansion of the Internet of Things, computing at the edge is becoming increasingly important, especially for applications where real-time response is important. In this paper, we made a systematic review of the literature on analytics at the edge. We extracted data from 40 selected primary relevant studies from the complet...

The learning and teaching process are widely supported by various virtual learning environments (VLE), often combined in a distributed learning environment. The distributed approach offers learning at scale, making use of a range of available technologies. The nature of distributed learning environment offers various potentials for learning analyti...

Nowadays users leave numerous comments on different social networks, news portals, and forums. Some of the comments are toxic or abusive. Due to numbers of comments, it is unfeasible to manually moderate them, so most of the systems use some kind of automatic discovery of toxicity using machine learning models. In this work, we performed a systemat...

From the very beginnings of software era, enterprise environments have been one of the greatest generators of demand for complex software systems. Attempts to satisfy these ever growing needs for enterprise software systems have had a m ixed success. Software reuse has been one of the leverage mechanisms software producers had at their disposal, an...

Cloud computing is nowadays becoming a popular paradigm for the provision of computing infrastructure that enables organizations to achieve financial savings. On the other hand, there are some known obstacles, among which vendor lock-in stands out. Furthermore, due to missing standards and heterogeneities of cloud storage systems, the migration of...

The main vision of the Internet of Things (IoT) is to enable seamless connection between physical devices and information systems to improve the lives of people. One of the main obstacles to achieve this vision is the current lack of IoT interoperability. In this article, the authors are giving an overview on how semantics is used in IoT interopera...

Gamification is a recent research and practical concept for use of game design elements in non-game contexts. In this work, we study the gamification in business context. The mentioned context is very important, due to its usage by companies who are looking for new ways to engage, teach, reward and retain employees and customers. First, we list a s...

Internet of things and cloud computing are in the widespread use today, and often work together to accomplish complex business task and use cases. This paper propose the framework and its practical implementation to compose different things as services and cloud services. The ontology based approach and JSON-LD was used to semantically annotate bot...

Pojam igrifikacije danas dobiva sve veći značaj u kontekstu poslovanja i obrazovanja u kojem dokazano donosi brojne prednosti (primjerice, povećanje motivacije i produktivnosti zaposlenika/učenika i sl.). S porastom popularnosti igrifikacije u akademskom i industrijskom okruženju razvijeni su i koriste se brojni termini koji često imaju vrlo slično...

In this paper we present our machine translation model that is based on bilingual linguistic phrases and their lexical attributes. Developed model partly arises from our previous work in the field of Generative Programming, and the working prototype was made for Croatian-French and French-Croatian translation. The model is aimed for the general lan...

The central role in development of information society is taken by smart cities and their novel services through the use of modern technology and smart solutions. The key enabler and driver of smart cities is Internet of Things (IoT). In this paper, we have conducted a systematic literature review in order to investigate proposed smart city service...

The scientific knowledge is disseminated by research papers. Most of the research literature is copyrighted by publishers and avail- able only through paywalls. Recently, some websites offer most of the recent content for free. One of them is the controversial website Sci-Hub that enables access to more than 47 million pirated research papers. In A...

The Internet of Things (IoT) is a complex ecosystem of devices, solutions, services and applications. IoT is highly heterogeneous because devices focus on proprietary technology and interfaces. To realize its full value, interoperability of ‘things’ becomes an important component of the ecosystem, which must be satisfactorily achieved. At present,...

Ontologies can be used to describe common cloud functionalities and enable common terminology to assist in cloud interoperability. In this work, we have developed the ontology for resources and operations and the ontology of interoperability problems. The aim is to clearly describe and categorize the existing functionalities, features and specifici...

Interoperability problems between cloud providers are one of the most serious issues of this new computing paradigm. A methodology is needed to systematically and effectively find and solve interoperability problems. For these reasons, a new methodology with detailed steps to find and solve interoperability problems is proposed here. This new metho...

The numerous heterogeneities among different providers make platform as a service interoperability an interesting and complex research and practical problem. For example, each provider offers its own remote application programming interfaces (APIs). The main aim of this paper is to identify and address service-level interoperability issues when usi...

Platform as a service model has certain obstacles, including data lock-in. It is expensive and time-consuming to move data to the alternative providers. This paper presents data storage options in platform as a service offers and identifies the most common data portability problems between various commercial providers of platform as a service. Ther...

The introduction of e-government has been a priority for the development of information society in many countries. In order to achieve these goals governmental institutions encourage initiatives for defining e-government strategies and aid the implementation of those strategies by endorsing projects in e-connectivity of the state administration, e-...

Two dominant techniques for software development used nowadays are the classical software development methods (e.g. RUP, waterfall) and the agile approaches (e.g. Scrum, XP). One can also use hybrid methods, because both approaches have some benefits. In this paper we show how to build new hybrid software engineering methods by means of metamodels....

Many organizations from the public and the private sector are planning to turn to Cloud Computing services, whose main benefits are flexibility, pay-per-use model and significant cost reduction. However, this new business paradigm for the provision of computing infrastructure has certain obstacles, including provider lock-in. When a client chooses...

Public e-services are very important to improve the communication among citizens and businesses on the one hand and government on the other hand. In this paper we present public e-service cost-benefit analysis methodology for assessing tangible and intangible costs and benefits. Our methodology is incorporated in the service lifecycle defined by SP...

Modern enterprises use service-oriented architecture to accommodate business agility. One of the most important SOA standards is BPEL, because it provides a means to specify business processes and their interaction. In this paper we examine patterns that are related to BPEL or can be implemented in BPEL. The most important identified pattern types...

Cloud Computing is a new paradigm of computing infrastructure provision which promises to achieve a vision of computer utilities. The most active research topic in Cloud Computing is its economic aspect. In this article we give overview of existing literature on Cloud Computing economics (pricing of Cloud services, costs, benefits and risk of Cloud...

The main objective of this study is to obtain a holistic view of Cloud Computing ontologies, their applications and focuses. The identification of primary studies in this systematic review is based on a pre-defined research protocol with a research question, inclusion and exclusion criteria and a search strategy. We summarize the selected studies i...