Zdravko Krpic

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Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) is a test, mostly used in web applications to verify that the user is human rather than an automated machine. However, with the advances in technology, this security mechanism is being challenged everyday through the use of different Artificial Intelligence (AI) based(More)
Wireless Sensor Network (WSN) power optimization is an ongoing research issue directed towards achieving low power consumption while retaining desired performance. Various techniques for such optimization exist, oriented at different levels of a WSN. One approach is a data aggregation method for an application oriented WSN. This technique involves(More)
High performance computing (HPC) systems are omnipresent in processing huge amounts of data. However, power consumption of these systems is becoming far from negligible, forcing software developers and hardware providers to deviate from usual performance plans, and to address power consumption and costs. As a result, small-scale applications are becoming(More)
A power consumption of a high performance computer (HPC) system has been an issue lately. Many programming techniques are still relying on performance gain, but only few of them are concerning energy footprint of the increased computing power. MPI and OpenMP are considered as a core scientific HPC programming libraries for distributed-memory and(More)
Original scientific paper Requirements of digital libraries for computing power, as well as needs of smaller users for automated document processing and digitization are growing, making grid environments and multi-core systems a preferred platform for optical character recognition applications. This paper examines character recognition performance on the(More)
In the domain of high performance computing, software deployment on heterogeneous distributed processing units has been in practice for many years. However, new hardware technologies, increased complexity of software and significant increase of requirements demand new methods that can manage these concerns in an efficient way. In this paper we propose a new(More)
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