103 results on '"Urošević, Branko"'
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2. Mean-Maximum Drawdown Optimization of Buy-and-Hold Portfolios Using a Multi-objective Evolutionary Algorithm
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Drenovak, Mikica, Ranković, Vladimir, Urošević, Branko, and Jelic, Ranko
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- 2022
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3. Hyperinflation and banks
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Urošević Branko, Žiković Boško, and Vasiljević Nikola
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hyperinflation ,financial repression ,financial crisis ,Economic theory. Demography ,HB1-3840 - Abstract
In this paper we consider a triangular inter-dependence between hyperinflation, financial repression, and the financial crisis in FRY in the 1990s. When all three vertices of the triangle are present, the crisis propagates and is amplified along its edges. We focus, especially, on the less studied link between the financial crisis and financial repression in FRY. Setting administrative limits on interest rates under conditions of hyperinflation leads to deeply negative real interest rates. The situation in FRY was further aggravated by credit allocation to privileged participants. Under such circumstances, all dinar components of bank balance sheets quickly became worthless, credit activities of banks died down and real quantities of dinars in circulation became negligible. The situation improved only after the removal of the outside repression (i.e. removal of sanctions), reorganization of the entire financial sector and the entrance of foreign banks into the Serbian market at the beginning of 2000s.
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- 2022
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4. Bankruptcy risk model and empirical tests
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Podobnik, Boris, Horvatic, Davor, Petersen, Alexander M., Urošević, Branko, and Stanley, H. Eugene
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Quantitative Finance - Risk Management ,Physics - Data Analysis, Statistics and Probability - Abstract
We analyze the size dependence and temporal stability of firm bankruptcy risk in the US economy by applying Zipf scaling techniques. We focus on a single risk factor-the debt-to-asset ratio R-in order to study the stability of the Zipf distribution of R over time. We find that the Zipf exponent increases during market crashes, implying that firms go bankrupt with larger values of R. Based on the Zipf analysis, we employ Bayes's theorem and relate the conditional probability that a bankrupt firm has a ratio R with the conditional probability of bankruptcy for a firm with a given R value. For 2,737 bankrupt firms, we demonstrate size dependence in assets change during the bankruptcy proceedings. Prepetition firm assets and petition firm assets follow Zipf distributions but with different exponents, meaning that firms with smaller assets adjust their assets more than firms with larger assets during the bankruptcy process. We compare bankrupt firms with nonbankrupt firms by analyzing the assets and liabilities of two large subsets of the US economy: 2,545 Nasdaq members and 1,680 New York Stock Exchange (NYSE) members. We find that both assets and liabilities follow a Pareto distribution. The finding is not a trivial consequence of the Zipf scaling relationship of firm size quantified by employees-although the market capitalization of Nasdaq stocks follows a Pareto distribution, the same distribution does not describe NYSE stocks. We propose a coupled Simon model that simultaneously evolves both assets and debt with the possibility of bankruptcy, and we also consider the possibility of firm mergers., Comment: 8 pages, 8 figures
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- 2010
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5. On Inflation Targeting and Foreign Exchange Interventions in a Dual Currency Economy
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Rajković, Ivana, Urošević, Branko, Heinemann, Frank, editor, Klüh, Ulrich, editor, and Watzka, Sebastian, editor
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- 2017
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6. Perturbative Calculations in the Effective Lagrangian and $2D$ Closed String Field Theory
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Lee, Julian and Urosevic, Branko
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High Energy Physics - Theory - Abstract
This paper is devoted to the study of closed string field theory in two dimensions. We compare two different approaches: BRST closed string field theory and the string effective Lagrangian. We show that the quadratic action and the pole structures of tree-level scattering amplitudes agree. We study merits and drawbacks of various gauge fixing procedures. In particular, we discuss conformal gauge in the context of the effective Lagrangian, and Siegel and Lorentz-like gauge in the general BRST approach. We discuss the ways in which discrete states survive a particular gauge fixing both by directly solving the equations of motion, and by analyzing pole structure of the scattering amplitudes., Comment: 32 p., five figures available upon request
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- 1994
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7. Off-Shell Amplitudes in Two Dimensional String Field Theory
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Urosevic, Branko
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High Energy Physics - Theory - Abstract
In this note we present an explicit procedure for the regularization of tree level amplitudes involving discrete states, using open string field theory. We show that there is a natural correspondence between the discrete states and off--shell states, later acting as a regularized version of the former. A general off-shell state corresponds to several physical states. In order to obtain the well--defined $S$ matrix elements one has to choose representatives close but not equal to the desired values of external momenta. The procedure renders finite all $4$-point amplitudes with an even number of (naively) divergent channels even after the regularization is removed. The rest of the amplitudes can be defined by means of such regularization., Comment: Brown preprint BROWN-HET-936, 11 pages (two figures available upon request), uses phyzzx
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- 1994
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8. Scattering of Discrete States in Two Dimensional Open String Field Theory
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Urošević, Branko
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High Energy Physics - Theory - Abstract
This is the second in a series of papers devoted to open string field theory in two dimensions. In this paper we aim to clarify the origin and the role of discrete physical states in the theory. To this end, we study interactions of discrete states and generic tachyons. In particular, we discuss at length four point amplitudes. We show that behavior of the correlation functions is governed by the number of generic tachyons involved and values of the kinematic invariants $s$, $t$ and $u$. Divergence of certain classes of correlators is shown to be the consequence of the fact certain kinematic invariants are non--positive integers in that case. Explicit examples are included. We check our results by standard conformal technique., Comment: 26 pages, BROWN-HET-917
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- 1993
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9. Perturbation Theory in Two Dimensional Open String Field Theory
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Urosevic, Branko
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High Energy Physics - Theory - Abstract
In this paper we develop the covariant string field theory approach to open 2d strings. Upon constructing the vertices, we apply the formalism to calculate the lowest order contributions to the 4- and 5- point tachyon--tachyon tree amplitudes. Our results are shown to match the `bulk' amplitude calculations of Bershadsky and Kutasov. In the present approach the pole structure of the amplitudes becomes manifest and their origin as coming from the higher string modes transparent., Comment: 26 pages
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- 1993
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10. Mean-univariate GARCH VaR portfolio optimization: Actual portfolio approach
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Ranković, Vladimir, Drenovak, Mikica, Urosevic, Branko, and Jelic, Ranko
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- 2016
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11. Dollarization of deposits in the short and long run: Evidence from CESE countries
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Urošević Branko and Rajković Ivana
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permanent and transitory dollarization ,transition economies ,Economic theory. Demography ,HB1-3840 - Abstract
In this paper, we study the drivers of permanent and transitory deposit dollarization for a sample of CESE countries using panel cointegration techniques. The results suggest that a positive cointegration relationship exists between permanent dollarization and Minimum Variance Portfolio (MVP) share. This provides an additional empirical validation of the MVP method as the standard tool for analyzing financial dollarization. In the long run, agents make savings decisions based on the relative volatilities of inflation and nominal depreciation rates and do not take into account the interest rate spread. Somewhat different factors affect dollarization in the short rather than in the long run. Namely, apart from MVP share, transitory deposit dollarization is driven, also, by the real interest rate spread. Our results suggest that affecting dollarization through changes in the interest rate spread may have a short term impact. In the long run, however, for dedollarization it is critical to reduce the volatility of inflation compared to the volatility of exchange rate depreciation. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 179005]
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- 2017
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12. A Comment on “What Is Wrong with the West’s Economies?” by Edmund Phelps
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Urošević, Branko
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- 2016
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13. Noise and aggregation of information in large markets
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García, Diego and Urošević, Branko
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- 2013
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14. Application of dynamic stochastic general equilibrium models to the case of the Serbian economy
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Urošević Branko and Grga Nikola
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DSGE model ,financial friction ,financial dollarization ,foreign ownership in banking sector ,Economic growth, development, planning ,HD72-88 - Abstract
This paper proposes a dynamic stochastic general equilibrium (DSGE) model for the Serbian economy. It is a modification of the existing models of Goodhart, Osorio and Tsomocos (2009) and Martinez and Tsomocos (2012). The model introduces important features of the Serbian economy, financial dollarization and foreign ownership of the banking system, while retaining the most important element of the reference models, financial friction. To solve the model we use Dynare, a specialized Matlab program for solving DSGE models. The model is subject to three different shocks: monetary, productivity, and regulatory, and the results are presented in the form of impulse response functions. It is concluded that the proposed platform has good characteristics, but its complete application to the case of the Serbian economy requires further research. [Projekat Ministarstva nauke Republike Srbije, br. 179005]
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- 2014
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15. Jackknife model averaging of the current account determinants
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Urošević Branko, Nedeljković Milan, and Zildžović Emir
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current account ,model averaging ,transition countries ,Economic theory. Demography ,HB1-3840 - Abstract
This paper investigates the short to medium-term empirical relationships between the current account balances and a broad set of macroeconomic determinants in Serbia and selected CEE countries. Using novel model averaging techniques we focus the analysis to individual country’s data only. The results suggest that the model tracks the current account movements over the past decade quite well and captures its relative volatility. Signs and magnitudes of different coefficients indicate significant heterogeneity among countries providing empirical support for the country-level analysis.
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- 2012
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16. Market risk stress testing for internationally active financial institutions
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Marković Petar and Urošević Branko
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stress testing ,risk factors ,scenario analysis ,shock development ,data gathering ,stressing correlations ,stressing interest rates ,PnL calculation ,stress scenario probability ,Economic growth, development, planning ,HD72-88 - Abstract
The paper develops a comprehensive framework for market risk stress testing in internationally active financial institutions. We begin by defining the scope and type of the stress test and explaining how to select risk factors and the stress time horizon. We then address challenges related to data gathering, followed by in-depth discussion of techniques for developing realistic shock scenarios. Next the process of shock application to a particular portfolio is described, followed by determination of portfolio profit and loss. We conclude by briefly discussing the issue of assigning probability to stress scenarios. We illustrate the framework by considering the development of a ‘worst case’ scenario using global financial market data from Thomson Reuters Datastream.
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- 2011
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17. Credit rating agencies and moral hazard
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Božović Miloš, Urošević Branko, and Živković Boško
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credit rating agencies ,solicited and unsolicited ratings ,moral hazard ,Economic theory. Demography ,HB1-3840 - Abstract
The failure of credit rating agencies to properly assess risks of complex financial securities was instrumental in setting off the global financial crisis. This paper studies the incentives of companies and rating agencies and argues that the way the current rating market is organized may provide agencies with intrinsic disincentives to accurately report credit risk of securities they rate. Informational inefficiency is only enhanced when rating agencies function as an oligopoly or when they rate structured products. We discuss possible market and regulatory solutions to these problems.
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- 2011
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18. Modelling the benchmark spot curve for the Serbian
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Drenovak Mikica and Urošević Branko
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fixed-income market ,benchmark spot curves ,yield curve modelling ,Nelson-Siegel model ,Svensson model ,fitting procedures ,Economic growth, development, planning ,HD72-88 - Abstract
The objective of this paper is to estimate Serbian benchmark spot curves using the Svensson parametric model. The main challenges that we tackle are: sparse data, different currency denominations of short and longer term maturities, and infrequent transactions in the short-term market segment vs daily traded medium and long-term market segment. We find that the model is flexible enough to account for most of the data variability. The model parameters are interpreted in economic terms.
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- 2010
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19. Option-based valuation of mortgage-backed securities
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Manola Ana and Urošević Branko
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mortgage-backed security(MBS) ,prepayment ,default ,bivariate binomial pricing technique ,Economic growth, development, planning ,HD72-88 - Abstract
Pure econometric approaches to pricing mortgage-backed securities (MBSs) - principal pricing vehicles used by financial practitioners - fail to capture their true risks. This point was powerfully driven home by the global financial crisis. Since prior to the crisis default rates of MBSs were quite modest, econometric pricing models systematically underestimated the possibility of default. As a result, MBSs were severely overvalued. It is widely believed that the global crisis was largely triggered by incorrect valuation of mortgage-backed securities. In the aftermath, it is important to revisit the foundations for pricing MBSs and to pay much closer attention to default risk. This paper introduces a comprehensive model for valuation of fixed-rate pass-through mortgagebacked securities in a simple option-based framework. In the model, we use bivariate binomial tree approach to simultaneously model prepayment and default options. Our simulation results demonstrate that the proposed model has sufficient flexibility to capture the two principal risks.
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- 2010
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20. Exchange-traded funds of the eurozone sovereign debt
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Drenovak Mikica and Urošević Branko
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exchange-traded funds ,fixed-income ,sovereign debt ,Economic growth, development, planning ,HD72-88 - Abstract
Periods of high uncertainty bring liquidity concerns to the forefront for sovereign bond investors. Arguably the most liquid and cost-effective way for retail and small institutional investors to gain diversified sovereign bond exposure is through an exchange traded fund (ETF). In this paper we study the performance, country exposure, and replicating characteristics of a sample of 31 European index ETFs with exposure to eurozone sovereign debt. The obtained results are presented in the context of underlying index selection rules, types of replication, and movements in sovereign debt interest rates and sovereign CDS spreads. It is demonstrated that the ETFs focused on accurately track corresponding bond indices. This is consistent with earlier findings for equity index ETFs. Our results may be of interest for institutional investors, regulators, and everyone interested in sovereign debt investments.
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- 2010
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21. On the spillover of exchange rate risk into default risk
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Božović Miloš, Urošević Branko, and Živković Boško
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foreign currency loans ,exchange-rate risk ,default risk ,banking regulation ,integrated risk analysis ,Economic growth, development, planning ,HD72-88 - Abstract
In order to reduce the exchange-rate risk, banks in emerging markets are typically denominating their loans in foreign currencies. However, in the event of a substantial depreciation of the local currency, the payment ability of a foreign-currency borrower may be reduced significantly, exposing the lender to additional default risk. This paper analyses how the exchange-rate risk of foreign currency loans spills over into default risk. We show that in an economy where foreign currency loans are a dominant source of financing economic activity, depreciation of the local currency establishes a negative feedback mechanism that leads to higher default probabilities, reduced credit supply, and reduced growth. This finding has some important implications that may be of special interest for regulators and market participants in emerging economies.
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- 2009
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22. Overconfidence and market efficiency with heterogeneous agents
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García, Diego, Sangiorgi, Francesco, and Urošević, Branko
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- 2007
23. Ownership Dynamics and Asset Pricing with a Large Shareholder
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DeMarzo, Peter M. and Urošević, Branko
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- 2006
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24. Static Mean-Variance Analysis with Uncertain Time Horizon
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Martellini, Lionel and Urošević, Branko
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- 2006
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25. The Housing Market in Serbia in the Past Decade
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Šoškić, Dejan, primary, Urošević, Branko, additional, Živković, Boško, additional, and Božović, Miloš, additional
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- 2015
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26. Bank Solvency Stress Tests with Fire Sales
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Breuer, Thomas, Summer, Martin, and Urošević, Branko
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C60 ,Systemic Risk ,Deleveraging ,C18 ,ddc:330 ,G32 ,G01 ,M48 ,Fire Sales ,Stress Testing ,C44 - Abstract
We present a simple and operational yet rigorous framework that combines current methods of bank solvency stress tests with a description of fire sales. We demonstrate the applicability of our framework to the EBA stress testing exercise. Fire sales are described by an equilibrium model which balances leverage improvements and drops in security prices. The differences in bank losses caused by fire sales are significant and go beyond the trivial fact that with deleveraging we will get bigger losses. It is shown that ignoring potential deleveraging effects can show institutions as resilient which are in fact fragile and thus create a false sense of resilience.
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- 2021
27. Valuing Mortgage Insurance Contracts in Emerging Market Economies
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Bardhan, Ashok, Karapandža, Raša, and Urošević, Branko
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- 2006
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28. Ownership Dynamics of REITs
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Edelstein, Robert H., Urošević, Branko, and Wonder, Nicholas
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- 2005
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29. Optimal Loan Interest Rate Contract Design
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Edelstein, Robert and Urošević, Branko
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- 2003
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30. Mean-Maximum Drawdown Optimization of Buy-and-Hold Portfolios Using a Multi-objective Evolutionary Algorithm
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Drenovak, Mikica, primary, Rankovic, Vladimir, additional, Urošević, Branko, additional, and Jelic, Ranko, additional
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- 2021
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31. Bond portfolio management under Solvency II regulation
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Drenovak, Mikica, primary, Ranković, Vladimir, additional, Urošević, Branko, additional, and Jelic, Ranko, additional
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- 2020
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32. Монетарна и макропруденцијална политика у евроизованој економији
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Urošević, Branko, Petrović, Pavle, Nojković, Aleksandra, Božović, Miloš, Radonjić, Ognjen, Todorović, Ivana, Urošević, Branko, Petrović, Pavle, Nojković, Aleksandra, Božović, Miloš, Radonjić, Ognjen, and Todorović, Ivana
- Abstract
Ова докторска дисертација има за циљ да на свеобухватан начин анализира изазове са којима се мала отворена економија са високим степеном финансијске евроизације суочава приликом вођења монетарне и макропруденцијалне политике. Рад посматра феномен финансијске евроизације са аспекта његовог узрока, односно детерминанти евроизације депозита, као највећег узрочника евроизације кредита, али и са аспекта ефеката које висок степен финансијске евроизације има на избор мера монетарне политике у овим земљама. Имајући у виду свеобухватност посматраног предмета истраживања, анализа је спроведена кроз три засебне целине, од којих свака посматра одређене аспекте финансијске евроизације, а које заједно посматране дају одговор на питање о узроцима финансијске евроизације и предлоге мера за де-евроизацију, као анализу ефеката на одлуке монетарне и макропруденцијалне политике и кључне макроекономске варијабле. Прва глава ове дисертације има за циљ да оцени детерминанте евроизације у дугом и у кратком року на узорку земаља централне, источне и југоисточне Европе које примењују режим инфлационог таргетирања како би се омогућила анализа потенцијалних мера монетарне и макропруденцијалне политике усмерених ка де-евроизацији депозита које би биле утемељене како на теоријским, тако и на емпиријским резултатима. Резултати истраживања приказани у Глави 1 ове дисертације указују на то да у посматраном узорку постоји позитивна коинтеграциона веза између перманентне компоненте евроизације и рација евроизације оцењеног методом минималне варијансе портфолија (Minimum Variance Portfolio - MVP) што представља полазну теоријску основу за анализу детерминанти евроизације. На посматраном узорку је показано да различите детерминанте утичу на кретање перманентне, односно транзиторне компоненте евроизације. Наиме, у дугом року, на одлуке о валутној структури штедње утиче однос волатилитета инфлације и номиналне депрецијације (апрецијације), али не и фактори који утичу на диференцијал каматних стопа. С дру, This doctoral dissertation aims to comprehensively analyze challenges that small open economy with high degree of financial euroisation is facing when making decisions regarding monetary and macroprudential policies. This dissertation analyzes the phenomenon of financial euroisation taking into consideration both, the main determinants of deposit euroisation, which is the main driver of credit euroisation, but also the effects that high degree of financial euroisation has on the choices regarding monetary and macroprudential policy measures in small open economies. Considering the comprehensiveness of the research goal, the analysis was conducted through three separate Chapters, each of them focusing at certain aspects of financial euroisation. Altogether, these three Chapters answer the question about the causes of financial euroisation and proposals for de-euroisation measures, as well as the effects that high level of euroisation has on monetary and macroprudential decisions and consequently on developments of key macroeconomic variables. The first Chapter of this dissertation aims to evaluate the determinants of long-term and short-term euroisation in a sample of Central, Eastern and South-Eastern European countries with inflation targeting regime. The goal of this Chapter is to provide the analysis of potential monetary and macroprudential policies that could help the process of de-euroisation of deposits that would be based on both theoretical and empirical results. The results of this Chapter indicate that in the observed data set there exists a positive (both panel based and time series based) cointegration relationship between the permanent (long run) component of deposit euroisation and the euroisation ratio calculated using the Minimum Variance Portfolio (MVP) method. Based on the results from the First Chapter, it can be concluded that different factors act as a key determinants of movements in permanent vs. transitory components of deposit euroisation.
- Published
- 2020
33. Bond portfolio management under Solvency II regulation.
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Drenovak, Mikica, Ranković, Vladimir, Urošević, Branko, and Jelic, Ranko
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BONDS (Finance) ,PORTFOLIO management (Investments) ,JUNK bonds ,BOND ratings ,INSURANCE companies ,CREDIT risk - Abstract
We develop a novel approach to the bond portfolio optimization for insurance companies that are subject to the new Solvency II regulation. The regulatory efficient portfolios are determined using the Non-dominated Sorting Genetic Algorithm II (NSGA-II). The characteristics of the estimated efficient portfolios are examined in different market regimes. Our findings suggest low cardinality of all estimated efficient portfolios despite explicit regulatory penalties for highly concentrated portfolios. The efficient portfolios are dominated by short term and BBB rated bonds. The lack of diversification and over-exposure to bonds with higher credit risk in different market regimes represents a weakness of the Solvency II regulation with unintended consequences for management of insurance companies. [ABSTRACT FROM AUTHOR]
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- 2021
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34. Структура глобалних финансијских мрежа и трансфер ризика на искуству банкарских система земаља западног Балкана
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Живковић, Бошко, Živković, Boško, Урошевић, Бранко, Urošević, Branko, Шошкић, Дејан, Цвијановић, Дражен Д., Живковић, Бошко, Živković, Boško, Урошевић, Бранко, Urošević, Branko, Шошкић, Дејан, and Цвијановић, Дражен Д.
- Abstract
У овој дисертацији је анализирана структура глобалне финансијске мреже у периоду последње финансијске кризе, од 2007-2013. године. Основни извор података који је у истраживању коришћен јесте Консолидована банкарска статистика Банке за међународна поравнања (BIS). Посебно је анализирана структура једног ужег сегмента глобалне финансијске мреже, којем припадају банкарски системи земаља западног Балкана., The structure of the global financial network in the period of the last financial crisis, from 2007 to 2013, was analysed in this dessertation. The main data source used in this research is the Consolidated banking statistics from the Bank of International Settlements (BIS). The structure of the smaller part of the global financial network, which the banking systems of the Western Balkn countries belong to, was especially analyzed.
- Published
- 2019
35. Survey of emerging food-borne trematode parasite among wild animals in Eastern Croatia
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Florijančić, Tihomir, Urošević, Branko, Ozimec, Siniša, Marinculić, Albert, Brmež, Mirjana, Bošković, Ivica, Popa, Maria, Varvara, Simona, Popa, Dorin, and Begov Ungur, Andreea
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Alaria alata ,trematode ,parasite ,Croatia ,wild boar ,frog ,meat - Abstract
Alariosis is a newly diagnosed, emerging parasitic disease caused by a digenean trematode Alaria alata (Goeze, 1782). Developmental stages of a trematode, known as mesocercaria, can parasitize all the abdominal organs, lung, eye, somatic muscle and subcutaneous tissue causing severe and sometimes fatal illness in human. Alaria alata requires two intermediate hosts: a freshwater snail and an amphibian. Carnivorous mammals are definitive hosts, while humans and omnivorous wild animals can be paratenic hosts. The presence of mesocercaria in wild boar meat represents the possible human health risk, but little is known about the circulation of mesocercaria in wild boar populations in eastern Croatia. Parasitological monitoring was carried out in the period 2016-2011, with an aim to investigate occurrence of mesocercaria and invasion intensity in free-living wild boar (Sus scrofa) and water frog (Pelophilax kl. esculentus). The sampling comprised three hunting grounds in eastern Croatia: Spačva, Podunavlje-Podravlje and Breznica, characterized with different orographic, hydrological and habitat conditions. In total, muscle tissue samples of 761 wild boars and 43 water frog were examined. Percentage of Alaria alata mesocercaria detected in wild boar was 42% in Spačva ; 7% in Podunavlje-Podravlje, and 1% in Breznica hunting ground. The average number of mesocercaria ranged from 2.4 to 6.5 per 30 g of infected wild boar muscle tissue. Percentage of mesocercaria in water frogs was 11% in Spačva, 56% in Podunavlje-Podravlje, and 0% in Breznica. The more frequent occurrence of mesocercaria was found in the animals living in the lowland, periodically flooded areas with abundance of forest and wetland habitats. This coincided with the fact that life-cycle of Alaria alata depends on presence of freshwater snail and frog, as an intermediate hosts. From the viewpoint of food safety and consumer exposure to this potential food-borne hazard, further monitoring is required to assess the occurrence, infestation rate and propose measures for the parasite reduction and removal from the food chain.
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- 2017
36. Istraživanja u društvenim naukama u Srbiji posle 1990. godine
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Urošević, Branko, Urošević, Branko, Pavlović, Dušan, Urošević, Branko, Urošević, Branko, and Pavlović, Dušan
- Abstract
The paper explains why the quality of social research in Serbia is low. We show that low international competitiveness of the Serbian social science research can be found in the system of perverse incentives that rewards social scientists to put minimal effort to advance on academic ladder and do the research. This can be seen in small number of works and papers published in internationally recognized and prestigious academic journals and rare participation at international conferences and gatherings. Low competitiveness is a consequence of descriptivity in research; retelling other author's theories, avoidance of quantitative research; rare application of theoretical paradigms; misunderstanding of theories, recycling of one's own but also other's works, usage of old syllabi in teaching, and a perverse system of teacher selection that is designed to select average students for TAs and university professors. We offer several recommendation to improve the situation., U tekstu objašnjavamo zbog čega je kvalitet naučno-istraživačkog rada u društvenim naukama u Srbiji, i pored jednog broja izuzetnih pojedinaca, u proseku na relativno niskom nivou, kao i šta bi trebalo preduzeti da bi se to promenilo. Smatramo da se glavni razlog za nisku međunarodnu konkurentnost domaćih istraživanja i istraživača u društvenim naukama nalazi u nedovoljno podsticajnom sistemu nagrađivanja i promovisanja naučnih radnika i naučnog rada. Konkurentnost je niska, jer sistem ne podstiče domaće istraživače da proizvode kvalitetna istraživanja, objavljuju u kvalitetnim stranim časopisima i prestižnim međunarodnim monografijama, i učestvuju na vrhunskim međunarodnim konferencijama. Niska konkurentnost je ključna, jer predstavlja uzrok niza drugih problema u društvenim naukama u koje spadaju: deskriptivnost u istraživanju; izbegavanje kvantitativnih istraživanja i praktične primene teorijskih paradigmi; nedovoljno razumevanje teorije; recikliranje sopstvenih, ali i tuđih radova; zastarelost u nastavnim planovima i programima kako na redovnim, tako i na poslediplomskim studijama itd. Posle analize postojećeg stanja, tekst završavamo preporukama o tome kako da se situacija poboljša.
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- 2013
37. Spatial occurrence of the parasitic trematode Alaria alata among wild animals in eastern Croatia
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Urošević, Branko, Florijančić, Tihomir, Ozimec, Siniša, Marinculić, Albert, Bošković, Ivica, Brmež, Mirjana, Gross-Bošković, Andrea, Vosniakos, Fokio, Meghea, Aurelia, Golumbeanu, Mariana, Constantin, Carolina, and Nenciu, Magda Ioana
- Subjects
Alaria alata ,mesocercaria ,wild boar ,frog - Abstract
The digenean trematode Alaria alata (Goeze, 1782) is considered an emerging zoonotic parasite in Europe. The presence of its mesocercarial stage in wild boar meat represents the possible human health risk as posed by this trematode. Parasitological monitoring was carried out in the period 2016- 2011, with an aim to examine occurrence of mesocercariae and invasion intensity in free- living wild boar (Sus scrofa) and water frog (Pelophilax kl. esculentus) as the paratenic host in the life cycle of the parasite. The sampling comprised three hunting grounds in eastern Croatia: Spačva, Podunavlje-Podravlje and Breznica, characterized with different orographic, hydrological and habitat conditions. In total, 761 muscle tissue samples of wild boar and 43 samples of water frog were examined. Percentage of A. alata mesocercariae detected in wild boar was 42% in Spačva ; 7% in Podunavlje-Podravlje, and 1% in Breznica hunting ground. The average number of mesocercariae ranged 2.4 – 6.5 per 30 g of infected wild boar muscle tissue. Percentage of mesocercariae in water frogs was 11% in Spačva, 56% in Podunavlje-Podravlje, and 0% in Breznica.The more frequent occurrence of A. alata mesocercariae was found in wild animals living in the lowland, periodically flooded areas with abundance of hygrophylous forests and wetland habitats. This coincided with the fact that life-cycle of Alaria alata depends on water-associated intermediate hosts. Considering the food safety and consumer exposure to this potential food-borne hazard, further monitoring is required to assess the occurrence, infestation rate and propose measures for the parasite reduction and removal from the food chain.
- Published
- 2016
38. Market risk management in a post-Basel II regulatory environment
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Drenovak, Mikica, primary, Ranković, Vladimir, additional, Ivanović, Miloš, additional, Urošević, Branko, additional, and Jelic, Ranko, additional
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- 2017
- Full Text
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39. Negative Selection - An Absolute Measure of Arbitrary Algorithmic Order Execution
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Krejić, Nataša, Lužanin, Zorana, Rajter-Ćirić, Danijela, Urošević, Branko, Lončar, Sanja, Krejić, Nataša, Lužanin, Zorana, Rajter-Ćirić, Danijela, Urošević, Branko, and Lončar, Sanja
- Abstract
Algorithmic trading is an automated process of order execution on electronic stock markets. It can be applied to a broad range of financial instruments, and it is characterized by a signicant investors' control over the execution of his/her orders, with the principal goal of finding the right balance between costs and risk of not (fully) executing an order. As the measurement of execution performance gives information whether best execution is achieved, a signicant number of diffeerent benchmarks is used in practice. The most frequently used are price benchmarks, where some of them are determined before trading (Pre-trade benchmarks), some during the trading day (In-traday benchmarks), and some are determined after the trade (Post-trade benchmarks). The two most dominant are VWAP and Arrival Price, which is along with other pre-trade price benchmarks known as the Implementation Shortfall (IS). We introduce Negative Selection as a posteriori measure of the execution algorithm performance. It is based on the concept of Optimal Placement, which represents the ideal order that could be executed in a given time win-dow, where the notion of ideal means that it is an order with the best execution price considering market conditions during the time window. Negative Selection is dened as a difference between vectors of optimal and executed orders, with vectors dened as a quantity of shares at specied price positionsin the order book. It is equal to zero when the order is optimally executed; negative if the order is not (completely) filled, and positive if the order is executed but at an unfavorable price. Negative Selection is based on the idea to offer a new, alternative performance measure, which will enable us to find the optimal trajectories and construct optimal execution of an order. The first chapter of the thesis includes a list of notation and an overview of denitions and theorems that will be used further in the thesis. Chapters 2 and 3 follow with a theore, Algoritamsko trgovanje je automatizovani proces izvršavanja naloga na elektronskim berzama. Može se primeniti na širok spektar nansijskih instrumenata kojima se trguje na berzi i karakteriše ga značajna kontrola investitora nad izvršavanjem njegovih naloga, pri čemu se teži nalaženju pravog balansa izmedu troška i rizika u vezi sa izvršenjem naloga. S ozirom da se merenjem performasi izvršenja naloga određuje da li je postignuto najbolje izvršenje, u praksi postoji značajan broj različitih pokazatelja. Najčešće su to pokazatelji cena, neki od njih se određuju pre trgovanja (eng. Pre-trade), neki u toku trgovanja (eng. Intraday), a neki nakon trgovanja (eng. Post-trade). Dva najdominantnija pokazatelja cena su VWAP i Arrival Price koji je zajedno sa ostalim "pre-trade" pokazateljima cena poznat kao Implementation shortfall (IS). Pojam negative selekcije se uvodi kao "post-trade" mera performansi algoritama izvršenja, polazeći od pojma optimalnog naloga, koji predstavlja idealni nalog koji se mogao izvrsiti u datom vremenskom intervalu, pri ćemu se pod pojmom "idealni" podrazumeva nalog kojim se postiže najbolja cena u tržišnim uslovima koji su vladali u toku tog vremenskog intervala. Negativna selekcija se definiše kao razlika vektora optimalnog i izvršenog naloga, pri čemu su vektori naloga defisani kao količine akcija na odgovarajućim pozicijama cena knjige naloga. Ona je jednaka nuli kada je nalog optimalno izvršen; negativna, ako nalog nije (u potpunosti) izvršen, a pozitivna ako je nalog izvršen, ali po nepovoljnoj ceni. Uvođenje mere negativne selekcije zasnovano je na ideji da se ponudi nova, alternativna, mera performansi i da se u odnosu na nju nađe optimalna trajektorija i konstruiše optimalno izvršenje naloga. U prvom poglavlju teze dati su lista notacija kao i pregled definicija i teorema neophodnih za izlaganje materije. Poglavlja 2 i 3 bave se teorijskim pregledom pojmova i literature u vezi sa mikrostrukturom tržišta, pokazateljima trgovanja i algor
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- 2017
40. Analiza determinanti kreditnog rizika u uslovima izražene informacione asimetrije
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Todorović, Miroslav, Živković, Boško, Urošević, Branko, Mladenović, Zorica, Krejić, Nataša, Jović, Željko, Todorović, Miroslav, Živković, Boško, Urošević, Branko, Mladenović, Zorica, Krejić, Nataša, and Jović, Željko
- Abstract
U ovom radu istraživane su ključne determinante kreditnog rizika na primeru bankarskog sektora u Republici Srbiji. Specičnost istraživanja uslovili su odabrani primer, koji se karakteriše uslovima izražene informacione asimetrije, i period koji je istraživanje pokrilo, a koji se karakteriše ispoljavanjem efekata svetske ekonomske krize. U cilju identifikacije determinanti kreditnog rizika i kvantifikacije njihovog uticaja na kvalitet kreditnog portfolija banaka u istraživanju je primenjen vektorski autoregresioni (VAR) model i model diskretne zavisne promenljive – binarni modeli izbora (logit i probit). Pokazano je da su kod kredita odobrenih privredi najznačajnije sistemske determinante kreditnog rizika predstavljali poslovni ciklus i devizni kurs, odnosno, porast problematičnih kredita u bankarskom sektoru bio je u najvećoj meri uzrokvan padom bruto domaćeg proizvoda i slabljenjem domaće valute. Povećanje stope nezaposlenosti, uzorkovano pogoršanjem stanja u privredi, zajedno sa smanjenjem vrednosti domaće valute i uvođenjem fiskalnog zahvatanja iz zarada u obliku tzv. solidarnog poreza predstavljali su najznačajnije sistemske determinante kreditnog rizika kod kredita koje su banke odobrile stanovništvu. Default-u dužnika bile su više izložene one banke koje su u krizni period ušle sa nižim nivoom kapitala, sa većom koncentracijom kredita u grupi od 50 preduzeća sa najvećim nivoom zaduženosti i sa ograničenjima koja vlasnicima banke nisu dozvoljavala da izvrše dokapitalizuju banke. Istovremeno su ove banke bile i sklonije da potcenjuju problematične kredite u svojim finansijskim izveštajima. Pad ekonomske aktivnosti (indeks prihoda od prodaje) potvrđen je i na nivou nesistemskih faktora kao značajan faktor kreditnog rizika kompanija. Kreditni rizik je rastao i po osnovu prelivanja efekata deviznog rizika usled pada vrednosti domaće valute i efekata operativnog rizika koji je poticao iz ekonomske povezanosti dužnika. Visoka posledična izloženost banka prema privred, This paper examined the key determinants of credit risk in the case of the banking sector in the Republic of Serbia. Specificity of this research was caused by the chosen example, which is characterized by conditions of expressed informational asymmetries, and the period the survey covered, which is characterized by the manifestation of the effects of the global economic crisis. Vector autoregression (VAR) model and discrete dependent variable model – a binary choice models (logit and probit) were used in this survey in order to identify the determinants of credit risk and quantify their impact on the quality of the loan portfolio of banks. It has been shown that in case of loan that were granted to corporates, the most important systemic determinants of credit risk represented the business cycle and exchange rate, i.e., the increase of non-performing loans in the banking sector was mostly caused by the decrease of the gross domestic product and the weakening of the domestic currency. The increase of the unemployment rate, caused by deteriorating state of the economy, along with a reduction of the value of the domestic currency and the introduction of fiscal abstractions of earnings in the form of so-called solidarity tax system represented the most important determinants of credit risk for loans that banks granted to households. Banks that have entered into the crisis period with a lower level of capital, with a higher concentration of loans in a group of 50 companies with the highest level of debt and the constraints that did not allow the owners of banks to conduct recapitalisation of banks were more exposed to default of the debtor. At the same time these banks were also more likely to underestimate the non-performing loans in its financial statements. The decline of economic activity (index of sales revenue) was confirmed at the level of non-systematic factors as a significant factor of credit risk of the companies. Credit risk has grown based on the spillover
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- 2017
41. Alaria alata - potencijalni zoonotski nametnik u mesu divljih svinja u istočnoj Hrvatskoj
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Florijančić, Tihomir, Urošević, Branko, Bošković, Ivica, Ozimec, Siniša, Gross- Bošković, Andrea, Hengl, Brigita, and Kralik, Gordana
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Alaria alata ,mesocerkarija ,divlja svinja ,žaba - Abstract
U Hrvatskoj je relativno slabo poznata agamodistomoza, zoonoza koju uzrokuje mesocerkarija crijevnog metilja Alaria alata. Cilj rada bio je sustavnim parazitološkim monitoringom utvrditi distribuciju i intenzitet invazije mesocerkarija metilja A. alata u divljih svinja (Sus scrofa) i zelenih žaba (Pelophilax cl. esculenta)kao posrednika u njegovom razvojnom ciklusu. Istraživanja su provedena u razdoblju od 2006. do 2011. godine u trima odabranim lovištima, tj. trima stanišnim tipovima u istočnoj Hrvatskoj. Ukupno jepregledan 761 uzorak mišićnog tkiva divlje svinje i 43 u zelene žabe. Učestalija pojava mesocerkarija utvrđena je u vlažnim i močvarnim staništima i kod divljih svinja i kod žaba. U lovištu "Spačva" od ukupno 172 pregledana uzorka na prisutnost mesocerkarije u mišićnom tkivu divlje svinje 42 % uzoraka bilo je pozitivno. U lovištu "Podunavlje-Podravlje" od ukupno 349 pregledanih uzoraka bilo je pozitivno 7 %, a u lovištu "Breznica" pozitivno je bilo tek 1 % od ukupno 240 pregledanih uzoraka, Prosječan broj mesocerkarija iznosio je 2, 4 - 6, 5 na 30 g mišićnog tkiva divlje svinje. Od 43 pregledane zelene žabe u močvarnim staništima pozitivno je bilo 11 % u jednom lovištu i 56 % uzoraka u drugom lovištu.
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- 2014
42. Survey on sylvatic parasitosis in Podunavlje region of Croatia
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Florijančić, Tihomir, Ozimec, Siniša, Bošković, Ivica, Degmečić, Dražen, Urošević, Branko, Nekvapil, Nenad, Šebečić, Marinko, Zanovski Lazić, Sanja, and Đorđević, Nenad
- Subjects
fungi ,parasitic diseases ,trichinellosis ,alariosis ,fascioloidosis ,Podunavlje ,Croatia - Abstract
Parasitic diseases are permanently present in wild animals living in natural habitats along the Croatian and Serbian part of the Danube course. Results of the investigations and status of parasitosis in game species over the last twenty years are given. Direct risks for the human health are trichinellosis and allariosis. Both sylvatic and domestic infection cycle is confirmed, with new findings of Trichinella larvae in European badger, red fox and golden jackal. Increasing frequency of trematode Allaria alata and its developmental stages is observed in various animals. The health status of red deer is endangered by infection with large American liver fluke (Fascioloidosis magna), and first evidence of fascioloidosis in Croatia dated in 1999. The more effective treatment and eradication of parasitic disease in game can be achieved by cooperation between scientists in two countries.
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- 2012
43. Učestalost mesocerkarija u mišićnom tkivu divljih svinja (Sus scrofa L.) iz različitih stanišnih tipova
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Urošević, Branko
- Subjects
Alaria alata ,mesocerkarija ,divlja svinja ,zelena žaba ,stanište - Abstract
Cilj doktorskog rada bio je sustavnim parazitološkim monitoringom utvrditi distribuciju i intenzitet invazije, kao i genetski potvrditi prisutnost mesocerkarija metilja Alaria alata u divljih svinja (Sus scrofa) i zelenih žaba (Pelophilax cl. esculenta) kao posrednika u njegovom razvojnom ciklusu. Istraživanja su provedena u razdoblju od 2006. do 2011. godine u tri lovišta, tj. tri stanišna tipa u istočnoj Hrvatskoj. Ukupno je pregledan 761 uzorak mišićnog tkiva divlje svinje i 43 zelene žabe. Učestalija pojava mesocerkarija utvrđena je u vlažnim i močvarnim staništima i kod divljih svinja i kod žaba. U lovištu Spačva od ukupno 172 pregledana uzorka na prisustvo mesocerkarije u mišićnom tkivu divlje svinje 42% uzoraka bilo je pozitivno. U lovištu Podunavlje – Podravlje od ukupno 349 pregledana uzorka bilo je pozitivno 7% uzoraka, a u lovištu Breznica od ukupno 240 pregledanih uzoraka pozitivno je bilo tek 1 %. Prosječan broj mesocerkarija iznosio je 2, 4 - 6, 5 mesocerkarija na 30 g mišićnog tkiva. Od 43 pregledane zelene žabe u močvarnim staništima pozitivno je bilo 11% u jednom lovištu i 56% uzoraka u drugom lovištu. Molekularnom tehnikom sekvencioniranja potvrđeno je da mesocerkarije, koje su determinirane na temelju morfoloških karakteristika, genetski pripadaju vrsti Alaria alata Goeze, 1782.
- Published
- 2012
44. Uzgoj običnoga jelena (Cervus elaphus L.) u kontroliranim uvjetima u ograđenom prostoru Šeprešhat
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Grubešić, Marijan, Urošević, Branko, Mihaljević, Zlatan, and Tomljanović, Kristijan
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Jelen obični ,kontrolirani uzgoj ,selekcija ,zaštita ,prirast ,tjelesni razvoj - Abstract
Ograđeni prostor Šeprešhat namijenjen je intenzivnom uzgoju jelena običnog u kontroliranim uvjetima. Cilj takovog uzgoja je produkcija visokovrijednog baranjskog jelena s mogućnošću distribucije kvalitetnog rasplodnog materijala u druga lovišta Republike Hrvatske. Uzgoj jelena je započeo još 2002 godine sa prvim hvatanjima i ispuštanjima teladi u ograđeni prostor. Ograđeni prostor Šeprešhat se u međuvremenu stalno postupno širio te je od početnih 53 ha danas na površini od 380 ha. Prostor je razdijeljen na 11 polja u kojima se provodi uzgoj u separacijama uz primjenu pregonskog pašarenja. Istraživanja su provedena u razdoblju od 2005 – 2009. godine a u tom razdoblju su praćeni razvoj fonda jelenske divljači, kontrolirano parenje, reprodukcija odnosno prirast, tjelesna težina posebno mlađih jedinki, sastav i količina utrošene hrane za prihranu, troškovi i prihodi. U istraživanom razdoblju osnovan je matični fond jelena i košuta od selektiranih grla. Na temelju praćenja prirasta utvrđeni su koeficijenti prirasta u rasponu od 0, 75 – 0, 85. Utvrđen je optimalni omjer za parenje 1 jelen na 10 – 20 košuta. Naime iz iskustva a i literature u ovakvom načinu uzgoja najčešće se navodi do 20 pa čak i do 30 ženki na jednog jelena rasplodnjaka. Tako su pojedina grla (3 i više godina) nerijetko parila 15-20 ženki i to vrlo uspješno sa preko 80% prirasta u navedenom razdoblju 2005-2009 u ograđenom prostoru Šeprešhat. Podaci iz nekih drugih lokaliteta sa grlima istog baranjskog genetskog podrijetla potvrđuju navedene rezultate te možemo tvrditi da brojem ženki 15-20 po jelenu ne dolazi do opadanja prirasta. Praćenjem razvoja jedinki od teladi do zrelih grla pokazao se najveći prirast do starosti 15 – 18 mjeseci. U prihrani najviše je zastupljena peletirana hrana, koja ujedno predstavlja i najveći trošak tijekom godine. Prihodi su neznatni u prvim godinama dok se formira selektirani matični fond, no nakon toga su postignuti zapaženi rezultati prodajom žive divljači a još se može povećati odstrelom trofejno vrijednih selektiranih jelena i mesom također selektiranih grla, posebno teladi.
- Published
- 2011
45. Uzgoj i selekcija jelena obicnog (Cervus elaphus L.) u ograđenom prostoru i mogučnost ispuštanja u otvorena lovišta u Hrvatskoj
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Grubešić, Marijan, Urošević, Branko, MIhaljević, Zlatan, Tomljanović, Kristijan, Poličnik, Helena, and Pokorny, Boštjan
- Subjects
Jelen obični ,kontrolirani uzgoj ,Šeprešhat - Abstract
U radu su prikazani rezultati višegodišnjeg uzgoja jelena običnog u kontroliranim uvijetima u uzgajalištu šeprešhat. Također je povučena paralela trofejne strukture uzgajanih jelena sa jelenima ulovljenim u slobodnom uzgoju.
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- 2011
46. Analiza determinanti, dinamike i održivosti tekućeg računa bilansa plaćanja
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Petrović, Pavle, Živković, Boško, Urošević, Branko, Nojković, Aleksandra, Zildžović, Emir Dž., Petrović, Pavle, Živković, Boško, Urošević, Branko, Nojković, Aleksandra, and Zildžović, Emir Dž.
- Abstract
APSTRAKT Spoljne neravnoteže su fenomen koji je značajnu pažnju dobio kako u teorijskim i empirijskim istraživanjima, tako i među kreatorima ekonomske politike tokom prethodnih decenija. Velike globalne neravnoteže koje su prethodile izbijanju svetske nansijske krize 2008. godine su u najmanju ruku doprinele širenju krize, ako ne i njenom nastanku. Makroekonomske implikacije spoljnih neravnoteža zahtevaju identi kaciju faktora koji su doprineli njihovom nastanku i širenju, ocenu potrebe za merama ekonomske politike i njihovih dometa u otklanjanju neravnoteža, kao i ocenu rizika spoljnih prilagođavanja u budućnosti. Imajući to u vidu, teza nastoji da da odgovore na neka od sledećih pitanja: 1. U kojoj meri se determinante teku´ceg raµcuna bilansa pla´canja razlikuju me u zemljama? Koliki su dometi mera ekonomske politike u otklanjanju spoljne neravnoteµze u Srbiji? Da li je trenutna spoljna pozicija Srbije odrµziva? Veliki deo studija determinanti teku´ceg raµcuna bilansa pla´canja u analizi primenjuje panel tehnike. Ovo je opravdano po to je ideja da se u analizu ukljuµci to ve´ci broj razlµcitih determinanti, a po pravilu su dostupne godi nje serije podataka, to implicira relativno kratke uzorke za ve´cinu zemalja u razvoju i zemalja sa trµzi tem u nastajanju. Me utim, potencijalno ograniµcenje panel tehnika je da se znaµcaj determinanti moµze razlikovati izme u zemalja u velikom uzorku, pa ova heterogenost moµze uticati na validnost nalnih ocena parametara. Kako bi se ovaj problem prevazi ao prvi deo ove teze koristi tehnike modelskog uproseµcavanja koje omogu´cavaju da se u analizu ukljuµce sve relevantne var- ijable dok se ona fokusira na podatke samo jedne zemlje. Analiza determinanti teku´ceg raµcuna bilansa pla´canja sprovedena je u u uzorku koji obuhvata period od poslednjih 20 godina u malim otvoreni privredama sa ksnim (Maroko, Ukrajina i Estonija) i eks- ibilnim kursom (Srbija, Poljska i Gruzija), sa ciljem da se identi kuju potencijalne raz- like me u nj, External imbalances have been in the focus of both academic literature and policy discussion over the past decades. Build-up of external imbalances in the period prior to the 2008 crisis contributed at least to the propagation of its negative shocks if not to its emergence. Macroeconomic implications of external imbalances show that it is important to identify their main drivers, assess the need for policy action and its potential e¤ects and quantify the risks of future external adjustments. Given the importance of these issues the thesis aims to answer the following questions: 1. To what extent current account determinants di¤er among countries? How big is the potential impact of policy measures on the external adjustment in Serbia? Is Serbia s current external position sustainable? A large number of empirical studies of the current account (CA) determinants use panel econometric tech- niques. This is reasonable, since on one hand the idea is to include all relevant determ- inants, while on the other hand annual data series are typically available, which implies relatively short samples for most of the emerging and developing economies. However, the importance of potential determinants may di¤er across the large number of countries and this heterogeneity may bias the resulting parameter estimates for individual coun- tries. To overcome this issue the thesis uses model averaging techniques which allows it to include all relevant CA determinants in the analysis while focusing on the individual country s data. The determinants of CA balances are estimated over past 20 years for small open economies with xed (Morocco, Ukraine and Estonia) and exible exchange rate (Serbia, Poland and Georgia), with the aim of identifying potential di¤erences among them. Di¤erent coe¢ cient signs and magnitudes indicate heterogeneity among countries, highlighting the drawbacks of panel estimates, particularly for the analysis of external sustainability. Once the main determinant
- Published
- 2015
47. Spread of fascioloidosis in deer in Croatia
- Author
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Marinculić, Albert, Lučinger, Snježana, Janicki, Zdravko, Severin, Krešimir, Florjančić, Tihomir, Urošević, Branko, Martinković, Franjo, Vojta, Lea, and Beck, Relja
- Subjects
Fascioloides magna ,deer ,Croatia ,education ,parasitic diseases - Abstract
The distribution of the American giant liver fluke Fascioloides magna in the deer and the risk for spread of the fluke through migration of animals was investigated in Croatia. From September 2007 to March 2008, totally 910 faecal samples from deers were collected and examined in order to determine the distribution of the fluke in the Northeastern Croatia. The faecal samples were collected from 35 different locations in the vicinity of frequently visited feeding places. Besides that, totally 45 livers of hunted deers were dissected. The eggs of F. magna were found in 68% of samples. Cysts of different size with one or more flukes were found in 53% of dissected livers. It has to be noted that discrepancies between the number of eggs in the feces and the presence of flukes were frequently observed. Infected animals were found even 120 km from the location where infected animals were detected previous year.
- Published
- 2008
48. Trichinellosis in wild boars in Croatia
- Author
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Florjančić, Tihomir, Beck, Relja, Tončić, Josip, Martinković, Franjo, Živičnjak, Tatjana, Lučinger Snježana, Antunović, Boris, Gašpar, Anđelko, Bošković, Ivica, Marinculić, Albert, Gross-Bošković, A, Dragičević, P, and Urošević, Branko
- Subjects
Trichinella britovi ,T. spiralis ,wild boar ,epidemiology ,endocrine system ,urogenital system - Abstract
In order to study the epidemiology of trichinellosis with special emphasis on wild boars a large scale study was performed. The goals of the study were to define the prevalence of trichinellosis in wild boars, to determine the etiological agents and to evaluate the use of ELISA in epidemiological investigation. Totally 1498 diaphragms were collected during three years period from 1498 (1003 diaphragms during the first collection period, 495 diaphragms during the second collection period) Isolated Trichinella larvae were also analysed by multiplex PCR in order to understand possible transmission between domestic pigs and wild boars. The prevalence in wild boars among the first study, mainly from non-endemic region was less than 0, 1% while among the second study the prevalence was higher (1, 6%). Studies on genotypes suggest that Trichinella britovi is the most common etiological agent in wild boars found in non endemic region while T. spiralis and T. britovi were common in the endemic region. The presence of T. spiralis in wild boars presented mostly in the domestic habitat suggesting a link between the sylvatic and domestic cycle. Another important conclusion was the comparison between the accuracy of results of ELISA with Western Blotting and the real muscle larvae burden after artificial digestion.
- Published
- 2007
49. Kvantifikovanje verovatnoće difolta preduzeća u Srbiji i razvoj internog kreditnog rejtinga za potrebe banke
- Author
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Žarkić-Joksimović, Nevenka, Manojlović, Vesna, Urošević, Branko, Nikolić, Nebojša N., Žarkić-Joksimović, Nevenka, Manojlović, Vesna, Urošević, Branko, and Nikolić, Nebojša N.
- Abstract
Predmet istraživanja ove doktorske disertacije je razvoj novog metodološkog okvira, kao i praktična implementacija internog kreditnog rejtinga modela za segment velikih i srednjih preduzeća u Srbiji. Osnovni cilj jeste kvantifikacija kreditnog rizika preduzeća u Srbiji, koja je omogućena korišćenjem novo-razvijenog modela kreditnog skoringa, kao i procena boniteta preduzeća, na osnovu uspostavljenog internog kreditnog rejting modela. Podaci na kojima se bazira istraživanje, predstavljaju sedmogodišnje podatke iz finansijskih izveštaja, odnosno bilansa stanja i bilansa uspeha preduzeća u Srbiji za periode posmatranja od 2006. do 2012. godine. Korišćenjem ovih podataka omogućava se kvantifikacija verovatnoće difolta preduzeća u Srbiji, uzimajući u obzir specifičnosti ovog tržišta i poslovnog ambijenta. Na bazi uspostavljene originalne metodologije, od strane autora, u ovoj doktorskoj disertaciji pokrivene su tri velike oblasti. Kao prvo, urađena je analiza velikog broja finansijskih racija, kao i pronalaženje najprediktivnijeg finansijskog racija u Republici Srbiji, na osnovu raspoloživih višegodišnjih podataka. Primenjena je i odgovarajuća transformacija finansijskih racija i korišćenje u svrhu razvoja modela kreditnog skoringa. Kao glavni rezultat istraživanja razvijen je i predložen novi model kreditnog skoringa koji kvantifikuje verovatnoću difolta preduzeća. Ovaj novi model pokazuje veću prediktivnu moć od modela koji su razvijani i korišćeni za inostrana tržišta poput Altmanovog Z-skor modela. Kao konačni rezultat, predstavljen je i uspostavljen interni kreditni rejting model, primenom originalnog pristupa kojim se uobličavaju i koriste rezultati prethodno razvijenog modela kreditnog skoringa. Konačni modeli kao i njihovi rezultati su prošli proces validacije predložen od strane relevantne akademske literature i novih Bazelskih standarda. Izračunati su ponderi kreditnog rizika na osnovu principa Bazela II i III i kroz retrospektivu je pokazano je da su svi rezul, The main subject of interest of this doctoral thesis is development of new methodological framework and empirical implementation of internal credit rating model for medium and large companies in Serbia. The main goal is credit risk quantification of Serbian companies by employing newly developed credit scoring model, as well as, the assessment of credit quality of companies by utilizing developed internal credit rating model. The data, which has been used as the basis of this research, is given in form of seven years history of financial statements, in form of balance sheet and income statement, of Serbian companies for the periods from 2006., up to 2012. year. The utilization of this data enables to quantify probability of default of Serbian companies by taking into consideration specific properties of this market and business environment. Based on new and the originally established methodology by the author this doctoral dissertation covers three large areas. The first is represented by the analysis of large number of financial ratios, as well as, a search for the most predictive financial ratio in the Republic of Serbia, based on available data history. Corresponding data transformation of financial ratios has been utilized with a purpose of credit scoring model development. As main result, the new credit-scoring model that quantifies the default probability, has been developed and proposed. This new model has a greater predictive power compared to models, such as Altman Z-score model, which have been developed and used on the foreign markets. As the final result, the internal credit rating model has been proposed and established by applying original approach, which shapes and uses the results gathered from previously developed credit scoring model. The final models and its results have been governed through the validation process which has been proposed by relevant academic literature and new Basel Capital Accord standards. The credit risk weights based on Basel
- Published
- 2014
50. European Bond ETFs: Tracking Errors and the Sovereign Debt Crisis
- Author
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Drenovak, Mikica, primary, Urošević, Branko, additional, and Jelic, Ranko, additional
- Published
- 2012
- Full Text
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