TY  - JOUR
AU  - Arsenović, Dušan
AU  - Buric, Nikola
AU  - Davidović, Dragomir
AU  - Prvanovic, Slobodan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5633
AB  - Positive operator valued measures representing phase observables for systems with arbitrary discrete, possibly degenerate, spectra are constructed. The general construction is presented and discussed using illustrative examples. The phase POVM shows intricate discontinuous dependence on the eigenfrequencies. Special discussion is devoted to the systems with degenerate energy spectrum, in which case the phase observable is nonunique. We present arguments that can be used to reduces this nonuniqueness.
T2  - Physical Review A
T1  - Quantum phase for a system with an arbitrary discrete energy spectrum
VL  - 88
IS  - 2
DO  - 10.1103/PhysRevA.88.022117
ER  - 

@article{
author = "Arsenović, Dušan and Buric, Nikola and Davidović, Dragomir and Prvanovic, Slobodan",
year = "2013",
abstract = "Positive operator valued measures representing phase observables for systems with arbitrary discrete, possibly degenerate, spectra are constructed. The general construction is presented and discussed using illustrative examples. The phase POVM shows intricate discontinuous dependence on the eigenfrequencies. Special discussion is devoted to the systems with degenerate energy spectrum, in which case the phase observable is nonunique. We present arguments that can be used to reduces this nonuniqueness.",
journal = "Physical Review A",
title = "Quantum phase for a system with an arbitrary discrete energy spectrum",
volume = "88",
number = "2",
doi = "10.1103/PhysRevA.88.022117"
}

Arsenović, D., Buric, N., Davidović, D.,& Prvanovic, S.. (2013). Quantum phase for a system with an arbitrary discrete energy spectrum. in Physical Review A, 88(2).
https://doi.org/10.1103/PhysRevA.88.022117

Arsenović D, Buric N, Davidović D, Prvanovic S. Quantum phase for a system with an arbitrary discrete energy spectrum. in Physical Review A. 2013;88(2).
doi:10.1103/PhysRevA.88.022117 .

Arsenović, Dušan, Buric, Nikola, Davidović, Dragomir, Prvanovic, Slobodan, "Quantum phase for a system with an arbitrary discrete energy spectrum" in Physical Review A, 88, no. 2 (2013),
https://doi.org/10.1103/PhysRevA.88.022117 . .

TY  - JOUR
AU  - Keković, Goran
AU  - Milovanović, Branislav
AU  - Davidović, Dragomir
AU  - Raković, Dejan
AU  - Culic, Milka
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5428
AB  - Objective: We investigated the effects of bisoprolol and losartan on subjects with essential hypertension, by conducting heart rate variability (HRV) analysis of ECG signals. Our intention was to establish the set of linear and nonlinear heart rate variability parameters, which could be used as a noninvasive markers in the treatment of hypertension. Materials and Methods: Sixty subjects with essential hypertension included in this study were divided in two groups. During the four weeks medical treatment, the first group was administered with daily oral dose of 5 mg of bisoprolol and the second with daily oral dose of 50 mg of losartan. We recorded ECG signals, and performed HRV analysis of consecutive RR time intervals, before and after a month of pharmacological therapy. Results: In the case of bisoprolol, statistically the most significant changes of HRV parameters were: TP (1814.1 +/- 1731.3 ms(2) vs. 761.3 +/- 725.0 ms(2), P LT 0.0001), RR (870.2 +/- 105.7 ms vs. 1027.2 +/- 150.0 ms, P LT 0.0001), HR (70.81 +/- 8.42 bp/min vs. 60.10 +/- 9.52 bp/min, P LT 0.0001). In the case of losartan, the most significant changes were: SDNN (43.16 +/- 17.27 ms vs. 237.98 +/- 118.54 ms, P = 0.002), rmSDD (27.09 +/- 18.27 ms vs. 46.82 +/- 37.71 ms, P = 0.003), SD2 (55.18 +/- 20.6 vs. 70.67 +/- 26.12, P LT 0.019) and DF2 (0.69 +/- 0.21 vs. 0.86 +/- 0.25, P LT 0.014). Conclusion: Effects of bisoprolol and losartan were especially manifested among the set of linear HRV parameters. As a consequence of effect of losartan, we singled out the nonlinear parameters SD2 and DF2.
T2  - Journal of Research in Medical Sciences
T1  - Comparative effect of bisoprolol and losartan in the treatment of essential hypertension
VL  - 17
IS  - 11
SP  - 1027
EP  - 1032
UR  - https://hdl.handle.net/21.15107/rcub_vinar_5428
ER  - 

@article{
author = "Keković, Goran and Milovanović, Branislav and Davidović, Dragomir and Raković, Dejan and Culic, Milka",
year = "2012",
abstract = "Objective: We investigated the effects of bisoprolol and losartan on subjects with essential hypertension, by conducting heart rate variability (HRV) analysis of ECG signals. Our intention was to establish the set of linear and nonlinear heart rate variability parameters, which could be used as a noninvasive markers in the treatment of hypertension. Materials and Methods: Sixty subjects with essential hypertension included in this study were divided in two groups. During the four weeks medical treatment, the first group was administered with daily oral dose of 5 mg of bisoprolol and the second with daily oral dose of 50 mg of losartan. We recorded ECG signals, and performed HRV analysis of consecutive RR time intervals, before and after a month of pharmacological therapy. Results: In the case of bisoprolol, statistically the most significant changes of HRV parameters were: TP (1814.1 +/- 1731.3 ms(2) vs. 761.3 +/- 725.0 ms(2), P LT 0.0001), RR (870.2 +/- 105.7 ms vs. 1027.2 +/- 150.0 ms, P LT 0.0001), HR (70.81 +/- 8.42 bp/min vs. 60.10 +/- 9.52 bp/min, P LT 0.0001). In the case of losartan, the most significant changes were: SDNN (43.16 +/- 17.27 ms vs. 237.98 +/- 118.54 ms, P = 0.002), rmSDD (27.09 +/- 18.27 ms vs. 46.82 +/- 37.71 ms, P = 0.003), SD2 (55.18 +/- 20.6 vs. 70.67 +/- 26.12, P LT 0.019) and DF2 (0.69 +/- 0.21 vs. 0.86 +/- 0.25, P LT 0.014). Conclusion: Effects of bisoprolol and losartan were especially manifested among the set of linear HRV parameters. As a consequence of effect of losartan, we singled out the nonlinear parameters SD2 and DF2.",
journal = "Journal of Research in Medical Sciences",
title = "Comparative effect of bisoprolol and losartan in the treatment of essential hypertension",
volume = "17",
number = "11",
pages = "1027-1032",
url = "https://hdl.handle.net/21.15107/rcub_vinar_5428"
}

Keković, G., Milovanović, B., Davidović, D., Raković, D.,& Culic, M.. (2012). Comparative effect of bisoprolol and losartan in the treatment of essential hypertension. in Journal of Research in Medical Sciences, 17(11), 1027-1032.
https://hdl.handle.net/21.15107/rcub_vinar_5428

Keković G, Milovanović B, Davidović D, Raković D, Culic M. Comparative effect of bisoprolol and losartan in the treatment of essential hypertension. in Journal of Research in Medical Sciences. 2012;17(11):1027-1032.
https://hdl.handle.net/21.15107/rcub_vinar_5428 .

Keković, Goran, Milovanović, Branislav, Davidović, Dragomir, Raković, Dejan, Culic, Milka, "Comparative effect of bisoprolol and losartan in the treatment of essential hypertension" in Journal of Research in Medical Sciences, 17, no. 11 (2012):1027-1032,
https://hdl.handle.net/21.15107/rcub_vinar_5428 .

TY  - JOUR
AU  - Arsenović, Dušan
AU  - Buric, Nikola
AU  - Davidovic, Dragomir
AU  - Prvanovic, Slobodan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4958
AB  - Properties of an operator representing the dynamical time in the extended parameterization invariant formulation of quantum mechanics are studied. It is shown that this time operator is given by a positive operator measure analogously to the quantities that are known to represent various measurable time operators. The relation between the dynamical time of the extended formulation and the best known example of the system time operator, i.e., for the free one-dimensional particle, is obtained.
T2  - Chinese Physics B
T1  - Dynamical time versus system time in quantum mechanics
VL  - 21
IS  - 7
DO  - 10.1088/1674-1056/21/7/070302
ER  - 

@article{
author = "Arsenović, Dušan and Buric, Nikola and Davidovic, Dragomir and Prvanovic, Slobodan",
year = "2012",
abstract = "Properties of an operator representing the dynamical time in the extended parameterization invariant formulation of quantum mechanics are studied. It is shown that this time operator is given by a positive operator measure analogously to the quantities that are known to represent various measurable time operators. The relation between the dynamical time of the extended formulation and the best known example of the system time operator, i.e., for the free one-dimensional particle, is obtained.",
journal = "Chinese Physics B",
title = "Dynamical time versus system time in quantum mechanics",
volume = "21",
number = "7",
doi = "10.1088/1674-1056/21/7/070302"
}

Arsenović, D., Buric, N., Davidovic, D.,& Prvanovic, S.. (2012). Dynamical time versus system time in quantum mechanics. in Chinese Physics B, 21(7).
https://doi.org/10.1088/1674-1056/21/7/070302

Arsenović D, Buric N, Davidovic D, Prvanovic S. Dynamical time versus system time in quantum mechanics. in Chinese Physics B. 2012;21(7).
doi:10.1088/1674-1056/21/7/070302 .

Arsenović, Dušan, Buric, Nikola, Davidovic, Dragomir, Prvanovic, Slobodan, "Dynamical time versus system time in quantum mechanics" in Chinese Physics B, 21, no. 7 (2012),
https://doi.org/10.1088/1674-1056/21/7/070302 . .

TY  - JOUR
AU  - Arsenović, Dušan
AU  - Buric, Nikola
AU  - Davidović, Dragomir
AU  - Prvanovic, Slobodan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4815
AB  - A representation of the phase observable in terms of a positive-operator-valued measure for an arbitrary quantum system with a finite Hilbert space is consistently defined. The phase for systems with rational relations between the energy eigenvalue differences is treated explicitly and the phase in the case of the irrational relations is obtained as a well-defined limit of the rational approximations.
T2  - Physical Review A
T1  - Quantum phase for an arbitrary system with finite-dimensional Hilbert space
VL  - 85
IS  - 4
DO  - 10.1103/PhysRevA.85.044103
ER  - 

@article{
author = "Arsenović, Dušan and Buric, Nikola and Davidović, Dragomir and Prvanovic, Slobodan",
year = "2012",
abstract = "A representation of the phase observable in terms of a positive-operator-valued measure for an arbitrary quantum system with a finite Hilbert space is consistently defined. The phase for systems with rational relations between the energy eigenvalue differences is treated explicitly and the phase in the case of the irrational relations is obtained as a well-defined limit of the rational approximations.",
journal = "Physical Review A",
title = "Quantum phase for an arbitrary system with finite-dimensional Hilbert space",
volume = "85",
number = "4",
doi = "10.1103/PhysRevA.85.044103"
}

Arsenović, D., Buric, N., Davidović, D.,& Prvanovic, S.. (2012). Quantum phase for an arbitrary system with finite-dimensional Hilbert space. in Physical Review A, 85(4).
https://doi.org/10.1103/PhysRevA.85.044103

Arsenović D, Buric N, Davidović D, Prvanovic S. Quantum phase for an arbitrary system with finite-dimensional Hilbert space. in Physical Review A. 2012;85(4).
doi:10.1103/PhysRevA.85.044103 .

Arsenović, Dušan, Buric, Nikola, Davidović, Dragomir, Prvanovic, Slobodan, "Quantum phase for an arbitrary system with finite-dimensional Hilbert space" in Physical Review A, 85, no. 4 (2012),
https://doi.org/10.1103/PhysRevA.85.044103 . .

TY  - CONF
AU  - Vojisavljevic, Vuk
AU  - Pirogova, Elena
AU  - Davidović, Dragomir
AU  - Cosic, Irena
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6883
AB  - A proteins biological function is encrypted within its primary structure. Nevertheless, revealing protein function from analysis of its primary structure is still unsolved problem. In this article we present a new methodology for determining functionally significant amino acid residues in proteins sequences, which is based on time-frequency signal analysis and Smoothed Pseudo Wigner Ville distribution (SPWV). This investigation is the extension of the Resonant Recognition Model (RRM) approach designed for structure-function analysis of proteins and DNA. The RRM is based on the finding that there is a significant correlation between spectra of the numerical presentation of amino acids and their biological activity. The RRM assumes that the selectivity of protein interactions is based on the resonant electromagnetic energy transfer at the specific frequency for each interaction. In this study Cytochrome C, Glucagon, and Hemoglobin proteins were used as the protein examples. By incorporating the SPWV distribution in the RRM, we can define the active regions along the protein molecule. In addition, it was also shown that our computational predictions are corresponding closely with the experimentally identified locations of the active/binding sites for the selected protein examples.
T1  - A new Approach to Revealing Functional Residues from Analysis of Protein Primary Structure
SP  - 4731
EP  - +
DO  - 10.1109/IEMBS.2009.5334193
ER  - 

@conference{
author = "Vojisavljevic, Vuk and Pirogova, Elena and Davidović, Dragomir and Cosic, Irena",
year = "2009",
abstract = "A proteins biological function is encrypted within its primary structure. Nevertheless, revealing protein function from analysis of its primary structure is still unsolved problem. In this article we present a new methodology for determining functionally significant amino acid residues in proteins sequences, which is based on time-frequency signal analysis and Smoothed Pseudo Wigner Ville distribution (SPWV). This investigation is the extension of the Resonant Recognition Model (RRM) approach designed for structure-function analysis of proteins and DNA. The RRM is based on the finding that there is a significant correlation between spectra of the numerical presentation of amino acids and their biological activity. The RRM assumes that the selectivity of protein interactions is based on the resonant electromagnetic energy transfer at the specific frequency for each interaction. In this study Cytochrome C, Glucagon, and Hemoglobin proteins were used as the protein examples. By incorporating the SPWV distribution in the RRM, we can define the active regions along the protein molecule. In addition, it was also shown that our computational predictions are corresponding closely with the experimentally identified locations of the active/binding sites for the selected protein examples.",
title = "A new Approach to Revealing Functional Residues from Analysis of Protein Primary Structure",
pages = "4731-+",
doi = "10.1109/IEMBS.2009.5334193"
}

Vojisavljevic, V., Pirogova, E., Davidović, D.,& Cosic, I.. (2009). A new Approach to Revealing Functional Residues from Analysis of Protein Primary Structure. , 4731-+.
https://doi.org/10.1109/IEMBS.2009.5334193

Vojisavljevic V, Pirogova E, Davidović D, Cosic I. A new Approach to Revealing Functional Residues from Analysis of Protein Primary Structure. 2009;:4731-+.
doi:10.1109/IEMBS.2009.5334193 .

Vojisavljevic, Vuk, Pirogova, Elena, Davidović, Dragomir, Cosic, Irena, "A new Approach to Revealing Functional Residues from Analysis of Protein Primary Structure" (2009):4731-+,
https://doi.org/10.1109/IEMBS.2009.5334193 . .

TY  - JOUR
AU  - Stanković, Srboljub
AU  - Ilić, Radovan D.
AU  - Davidović, Miloš D.
AU  - Kovačević, Milojko
AU  - Davidović, Dragomir
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3541
AB  - Radiation sensing MOSFETs (RADFETs) have found numerous applications in space research, as well as in nuclear technology and research, and radiotherapy. Since proton irradiation is an essential part of the space radiation environment, it is important to know RADFET proton response precisely. In this work a numerical simulation of RADFET proton response is performed. To this end the proton transport Monte Carlo software SRNA-2K5, developed by one of the authors, has been adapted to obtain the energy deposited in the RADFET structure and dose distribution within the microscopic dimensions of the dosimeter sensitive volume. Our results show that RADFET response to proton irradiation depends significantly of packaging configurations with kovar lid.
T2  - Nuclear technology and radiation protection
T1  - Influence of Packaging Configuration with Kovar Lid on Radfet Response to Proton Irradiation
VL  - 23
IS  - 1
SP  - 37
EP  - 40
DO  - 10.2298/NTRP0801037S
ER  - 

@article{
author = "Stanković, Srboljub and Ilić, Radovan D. and Davidović, Miloš D. and Kovačević, Milojko and Davidović, Dragomir",
year = "2008",
abstract = "Radiation sensing MOSFETs (RADFETs) have found numerous applications in space research, as well as in nuclear technology and research, and radiotherapy. Since proton irradiation is an essential part of the space radiation environment, it is important to know RADFET proton response precisely. In this work a numerical simulation of RADFET proton response is performed. To this end the proton transport Monte Carlo software SRNA-2K5, developed by one of the authors, has been adapted to obtain the energy deposited in the RADFET structure and dose distribution within the microscopic dimensions of the dosimeter sensitive volume. Our results show that RADFET response to proton irradiation depends significantly of packaging configurations with kovar lid.",
journal = "Nuclear technology and radiation protection",
title = "Influence of Packaging Configuration with Kovar Lid on Radfet Response to Proton Irradiation",
volume = "23",
number = "1",
pages = "37-40",
doi = "10.2298/NTRP0801037S"
}

Stanković, S., Ilić, R. D., Davidović, M. D., Kovačević, M.,& Davidović, D.. (2008). Influence of Packaging Configuration with Kovar Lid on Radfet Response to Proton Irradiation. in Nuclear technology and radiation protection, 23(1), 37-40.
https://doi.org/10.2298/NTRP0801037S

Stanković S, Ilić RD, Davidović MD, Kovačević M, Davidović D. Influence of Packaging Configuration with Kovar Lid on Radfet Response to Proton Irradiation. in Nuclear technology and radiation protection. 2008;23(1):37-40.
doi:10.2298/NTRP0801037S .

Stanković, Srboljub, Ilić, Radovan D., Davidović, Miloš D., Kovačević, Milojko, Davidović, Dragomir, "Influence of Packaging Configuration with Kovar Lid on Radfet Response to Proton Irradiation" in Nuclear technology and radiation protection, 23, no. 1 (2008):37-40,
https://doi.org/10.2298/NTRP0801037S . .