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Novi Sad, Serbia

Congradac V.,University of Novi Sad | Prebiracevic B.,ION Solutions | Jorgovanovic N.,University of Novi Sad | Stanisic D.,University of Novi Sad
Energy and Buildings

This work is a part of a larger project initiated under the patronage of Europe's Information Society, within ICT PSP - ICT Policy Support Programme 1 in order to increase energy efficiency in hospitals, using a variety of currently available technologies. A prerequisite for the determination of savings is the accurate calculation of energy consumption and then the application of different methods of intelligent control for the energy savings, which should be combined with a system of expert advices in order to gain the highest efficiency. This study concentrates on the first part of the problem - the creation of a mathematical tool for the exact calculation of room/building energy demands. © 2011 Elsevier B.V. All rights reserved. Source

Congradac V.,University of Novi Sad | Prebiracevic B.,ION Solutions | Petrovacki N.,Honeywell
Energy and Buildings

As a part of ICT Policy Support Programme,1 the task of this work is the assessment of possibilities for increasing energy efficiency in hospitals using various control techniques that are available today. To present the opportunities for energy savings, it is necessary to define the ways in which savings can be achieved (control strategies), and then determine the equations by which each method can be described separately, i.e. to calculate the amount of energy that can be saved. At the same time, it is important to take into account the mutual dependence of various methods and provide the maximum support in selecting the preferred methods for achieving the highest efficiency. In this paper a specific set of management methods is presented and their implementations are shown by utilizing the previously introduced tool for energy demand calculation. © 2013 Elsevier B.V. Source

Congradac V.D.,University of Novi Sad | Milosavljevic B.B.,ION Solutions | Velickovic J.M.,ION Solutions | Prebiracevic B.V.,ION Solutions
Thermal Science

The manufacturing, distribution and use of electricity are of fundamental importance for the social life and they have the biggest influence on the environment associated with any human activity. The energy needed for building lighting makes up 20-40% of the total consumption. This paper displays the development of the mathematical model and genetic algorithm for the control of dimmable lighting on problems of regulating the level of internal lighting and increase of energetic efficiency using daylight. A series of experiments using the optimization algorithm on the the realized model confirmed very high savings in electricity consumption. Source

Ramsey S.D.,Fred Hutchinson Cancer Research Center | Sullivan S.D.,University of Washington | Reed S.D.,Duke University | Shih Y.-C.T.,University of Chicago | And 11 more authors.

Comparative effectiveness research (CER) can assist patients, clinicians, purchasers, and policy makers in making more informed decisions that will improve cancer care and outcomes. Despite its promise, the factors that distinguish CER from other types of evidence remain mysterious to many oncologists. One concern is whether CER studies will improve decision making in oncology or only add to the massive amount of research information that decision makers must sift through as part of their professional responsibilities. In this report, we highlight several issues that distinguish CER from the most common way evidence is generated for cancer therapy- phase I-III clinical trials. To identify the issues that are most relevant to busy decision makers,weassembled a panel of active professionals with a wide range of roles in cancer care delivery. This panel identified five themes that they considered most important for CER in oncology, as well as fundamental threats to the validity of individual CER studies-threats they termed the "kiss of death" for their applicability to practice. In discussing these concepts,wealsotoucheduponthe notion of whether cancer is special among health issues with regard to how evidence is generated and used. © AlphaMed Press 2013. Source

Milosavljevic B.B.,ION Solutions | Congradac V.D.,University of Novi Sad | Velickovic J.M.,ION Solutions | Prebiracevic B.V.,ION Solutions
Thermal Science

The use of software became of great importance for successful facility and property management worldwide, because of its possibilities for generating savings in multiple areas and not just in operational areas and improving business processes. This paper displays the growing facility and property management market in Serbia and the software TotalObserver as a solution for the emerging problems for this market. Case studies and operational use of TotalObserver confirmed that significant savings can be generated by using software for asset management. Source

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