Performance optimization of energy-efficient computer and communication systems
Project duration: 2011-2014
Project code: TR 32023
Project coordinator: State University of Novi Pazar
Participants from Singidunum University: Miroslav Lutovac
Abstract
Project consists of the development of new methods and algorithms, derivation of theoretical results, experimental verification, and development of systems for more efficient usage of computer and communication systems, with the focus on performance and to consume less energy. The topic belongs to Green technologies, and the focus is on consuming less energy or to reduce contamination and waste materials of computer and communication systems. Research is on efficient algorithms for signal and data processing, mathematical modeling, efficient spectral usage, optimization of computer systems, and usage of reconfigurable systems. The results will be used in communication systems, wireless communication, image and speech processing, and business decisions. Commercial software solutions will be produced, new or as upgrade of existing, or as part of equipments and systems produced by our participants.
Development of High-quality Devices for Special Applications Based on Crystal Units of New Technologies
Project duration: 2011-2014
Project code: TR 32048
Project coordinator: Inovation Center of the School of Electric Engineering in Belgrade
Participants from Singidunum University: Miroslav Lutovac
Abstract
This project includes:
Technology of double rotated SC cut quartz crystal units and ultra-thin micro-miniature AT-cut crystal units for filters;
OCXO development and realization of high stability OCXO oscilator 5-130MHz based on SC cut quartz crystal unit;
Development and realization of band-pass and band-stop crystal filters for frequencies 30-180MHz.It is proposed to be implemented in digital communication systems. Each phase of realization consists of numerous procedures in order to obtain ultra stable, high quality devices competitive on international markets. Quartz crystal unit is the heart of almost all devices for frequency control. Our proposal is to realize high-stability OCXO SC cut crystal unit from 5-30MHz band, with strict demands from the list of technical characteristics especially having in mind low phase noise, short-term and long-term stabilities. It is further planned to develop and realize ultra-thin micro-miniature AT cut crystal units for frequencies from 30-180MHz intended for filters with special demands for position and suppression of spurious resonanties, intermodulation, environmental characteristics and small frequency deviation in wide range of temperatures.
Viminacium, roman city and military legion camp – research of material and non-material of inhabitants by using the modern technologies of remote detection, geophysics, GIS, digitalisation and 3D visualisation
Project duration: 2011-2014
Project code: III 47018
Project coordinator: Institute of Archeology
Participants from Singidunum University: Milan Milosavljević
Abstract
Subject of research are the remains of the Roman city and military camp Viminacium, which is situated in the counties of the villages Stari Kostolac and Drmno. The importance of Viminacium is that it represents the only Roman city and military camp which is not endangered by modern agglomerations. During Roman times, it had more than 35.000 inhabitants. Viminacium was the capital of the Roman province Moesia Superior, the administrative, economic and cultural centre for the area on the northern border of the Roman Empire. Within the area of the archaeological site Viminacium, during the past several years, multidisciplinary systematical geo-physical research is taking place before archaeological excavations. The application of geo-physical methods includes common work of geo-physicists, electro-engineers and archaeologists. Decisions about convenience of an archaeological site for applications of such methods, its stratigraphy, geo-physical contrast, the overview of archaeological documentation, as well as the project of measuring itself must be a result of common work. It is clear that, for a competent interpretation of geo-physical data, one needs multidisciplinary activity. After geo-physical and archaeological research comes an anthropological analysis and after that an interpretation that explains the population of Viminacium and its material culture. At this moment, the only Roman amphitheatre at the territory of the former province of Upper Moesia is being excavated.
Research of technical-technological, staff and organizational capacity of Serbian Railways, from the viewpoint of current and future European Union requirements
Project duration: 2011-2014
Project code: 36012
Project coordinator: Faculty of Transport and Traffic Engineering, University of Belgrade
Participants from Singidunum University: Irina Branović
Abstract
The project will include the research of the current situation and the EU requirements related to the field of railway transport safety, with special emphasis on the way of formation and financing, organizational and staffing structure, scope and working methods of so called “Safety Authority”, an entity dealing with the investigation and analysis of rail accidents, as well as proposing measures to raise the level of security. The aim of this part of the research is to propose optimal solution for “Safety Authority” in the Republic of Serbia. Special attention will be devoted to the research related to the potential of Serbian Railways in terms of EU requirements related to the compatibility and interoperability of technical systems, both in the field of technical exploitation characteristics and maintenance. Traffic-technical and organizational requirements that will appear in our railways upon Serbian EU entry, especially on Corridor X, will also be analyzed. Measures to meet these requirements will be proposed. Requirements for intermodal transport will be given special attention. In this regard, the EU environmental requirements regarding rail transport will be analyzed and possibilities of fulfilling the requirements by Serbian Railways will be explored. The situation regarding normative regulation of railway traffic will be explored and activities with the aim of raising this area to the required EU level will be proposed.
Development and Application of Methodes and Laboratory Equipment Intended for Conformity Assessment of Technical Products
Project duration: 2011-2014
Project code: 35031
Project coordinator: Institute of Nuclear Sciences Vinča
Participants from Singidunum University: Predrag Popović
Abstract
Adjusting of technical legislation of the Republic of Serbia with the European legal heritage is of high importance for the economy, as it creates preconditions for increasing exports and provides consumer protection from non-quality products at the local market. Successful application of harmonized technical legislation requires upgrading of the infrastructure required for conformity assessment in the Republic of Serbia which will be in the position to apply the conformity assessment methods that are in accordance with the essential requirements of the compulsory EU Directives. In that way, producers would acquire the right to use the “CE“ labeling for their products, which is the proof of the product being safe for people and environment, and which confirms to the government organizations that the product has had a legal placement on the market. Due to the significance of these activities for the national economy development and for consumer protection, the authorized Conformity Assessment Bodies have to be empowered in compliance with the criteria set out in relevant directives and international standards regulating their field of work. The strengthened products conformity assessment infrastructure would become a technical service where producers wishing to market their products on the EU market could get all necessary technical information and certificates on conformity of their products with the requirements of relevant Directives, as well as to get actual assistance in analyzing and assessing the risks related to usage of the products. The expected project results would considerably help development of the products conformity assessment methods and proceedings, in accordance with the EU harmonized technical regulations, especially regarding the products where technical safety is relevant. This is a precondition for the economy of Serbia to create, in the priority fields, the products of necessary quality that can be competitive in the international market.
Participants from Singidunum University: Goranka Knežević, Maja Gligorić, Dušan Borovčanin
Abstract
The importance of research within this project stems directly from the significance of meeting the economic dimension of competitiveness of the country, i.e., equal participation of Serbia in the European and global market of goods and services. Thus, it is obvious that the companies (the focus of this project is a company) can and must activate all internal technical, technological, human, financial and other resources in order to achieve the required level of competitiveness of goods and services offered in the domestic and foreign markets. It should be emphasized that competitiveness in the domestic market is often underestimated and neglected despite the fact that it is extremely important as it represents the first step on the path towards achieving competitiveness in the European and global market. Competition in the domestic market is occasionally sharper and more complex for some goods and services, primarily due to the effects of some non-economic factors that are, in most cases, political provenances.
Participants from Singidunum University: Dejan Živković
Abstract
The characteristic polynomial of any square matrix of order can be computed in time by the standard algorithm. So, the same applies for computing the characteristic polyno0mial of graphs of order For some special classes of graphs, however, like threshoild and chaim graphs, the time complexity bound can be significantly improved by the exploiting their combinational structure. For example, for threshold graphs the bound is recently decreased to. Here we put forward some novel ideas based on the divisor technique to obtain another fast algorithm for computing the characteristic polynomial of threshold and chain graphs, as well as some other graph classes.
Erasmus+ International Credit Mobility projects support mobility of students, teaching and administrative staff between higher educational institutions in Programme and Partner countries. Singidunum University is a partner of the following HEIs:
Project coordinator: Mathematical Institute of the Serbian Academy of Sciences and Arts
Participants from Singidunum University: Violeta Tomašević, Dragan Cvetković, Dejan Živković, Aleksandar Jevremović, Saša Adamović, Milan Tuba, Nebojša Bačanin Džakula
Abstract
Researchers in mathematical logic and knowledge based systems, graph theory, operational research, cryptology etc., have all made breakthroughs in developing solutions for many problems on which modern technology and everyday life depend. The practice in Serbia shows that results obtained by our scientists remained on a theoretical level. Thus, we propose a concerted effort towards developing ICT applications of these results with the main objectives to:
strengthen the S&T base in Serbia for the development of ICT as the core of the knowledge-based society and economy,
utilize the knowledge of advanced mathematical methods, commonly unfamiliar to engineers, for obtaining novel or significantly improving the existing ICTs,
help reduce the digital divide by unlocking the innovation and creativity of the partners. The project will focus on a limited set of challenges with a firm mathematical background. It will establish cooperation between research groups in mathematics, CS, engineering, telecommunications, and arts and humanities for mutual benefit. We will concern
ICT as the main research area, and its applications into some key socio-economic challenges (health, power systems, sharing of cultural resources) defined in the national strategy for science:
Contributions to prediction, prevention, diagnostic and therapeutic approaches (1.2),
New technologies for renewable energy sources and clean technology (2.2),
The cultural heritage, creating capital works (7.7).
Project coordinator: Institute for Balkan Studies of the Serbian Academy of Sciences and Arts
Participants from Singidunum University: Verka Jovanović
Abstract
The study and interpretation of cultural interaction in the Danube area, research will be aimed at highlighting the role of rivers in shaping perceptions of Serbia in Europe. In this sense, theoretically, it is a imagological, and the methodological, interpretative work, which includes the launch of new theoretical questions, collecting material, analysis, interpretation and testing assumptions about the historical, cultural and geographical importance of the Danube region in Serbia. The significance of this work lies not only in the collection and interpretation of materials such as guides for the trip on the Danube, in travel literature, cartographic views of the Danube and other relevant materials, but also in examining the scale of cultural, economic, commercial and political importance of the river in Serbia and the region of Southeast Europe. Thus, from their point of view and disciplinary aspects, researchers will interpret the significance of the Danube in the development of Serbia and the Balkans, and provide new insights into the role of cultural contact, international relations, expansion of scientific, artistic, economic, political and, in general, the impact of civilization.
Participants from Singidunum University: Endre Pap
Abstract
The main problem in today mathematical modeling is related to the nonlinearity of the considered problems mostly under uncertainty, and usually looking for optimal solution. Mathematical machinery initiated by many different applications, which cover all three mentioned aspects is pseudo-analysis, which requires an introduction of new real operations. Besides several properties and construction methods, also several kinds of aggregation functions will be introduced and examined. It will be investigated and developed further the notion of universal integral and many of important cases of it. There will be proved inequalities for nonlinear integrals (Jensen, Chebyshev, Hölder, Minkowski, Stolarsky). There will be introduced new types of integrals with respect to the absolutely monotone set functions. Further applications of of the pseudo-superposition principle for some new nonlinear PDEs will be managed. Based on countable extensions of the triangular norms fixed point theorems in probabilistic metric and fuzzy metric spaces will be proved. There will be managed new models, based on pseudo-analysis, in social sciences, transportations and imprecise spatial objects modeling. Using semi rings of bistochastic matrices there will be investigated the mobility index and related orderings, and the extension of the whole theory to continuous state Markov processes. Comparative analysis of existing causality measures applied to problems of brain connectivity will be performed.
Participants from Singidunum University: Dragan Cvetković
Abstract
The subject of this project is improvement of the welding technology for micro-alloyed steels, in order to increase productivity and improve the quality of welded joints. It will be evaluated the following welding processes: a) SMAW, b) GMAW-MIG/MAG, c) FCAW-G with mixture of external shielding medium (Ar, CO2 and O2) and d) FCAW-S. In the mixtures of shielding gases the content of Ar, CO2 and O2 would be different, because the preliminary investigations executed in Fac. of Mech. Eng. in Belgrade showed that the appropriate choice of the shielding gas mixture composition can significantly affect the quality of the weld metal, and therefore the welded joint as a whole. Therefore, it is planned that the Project precisely defines the mix of shielding gases and to compare the obtained quality of welded joints with the quality of joints made by SMAW process. It was planned to made joints by FCAW-S process that is currently increasingly used worldwide in this area. It is also planned to investigate the influence of applied welding technologies on the properties of welded joints by different experimental methods: mechanical testing, metallographic examination and fractographic examination.
Project coordinator: The Institute for Multidisciplinary Research, University of Belgrade
Participants from Singidunum University: Slađana Spasić
Abstract
Monitoring of the growing human impact on environment represents one of the research priorities in Europe. Recent studies show that less than 10% of all wastewater in Serbia is treated before being released into water bodies, which represents an actual threat for the quality of open waters in Serbia. Besides the influence of industrial and communal wastewater, open waters are also under the impact of runoff from arable land. Although it is not yet a member of EU, Serbia took measures which will contribute to fulfillment of basic goals of the EU Water Framework Directive (WFD), to which it is obliged as a signatory of the International Commission for the Protection of the Danube River (ICPDR), since this commission took responsibility for the implementation of WFD. As stated in the WFD, all qualitative parameters of aquatic ecosystem health, including biological parameters, should reach the satisfactory level by year 2015. In line with the WFD, fishes represent one of the most important elements of aquatic ecosystem biological quality, and should be used for the assessment of ecological status of rivers and other water bodies, where species composition, abundance, and age structure represent the minimal quantity of data that should be used in ecological status assessment. Furthermore, the condition factor and the data on fish population restoration and parasites are recommended by the WFD as supplementary parameters that should be analyzed.
