Jaćimović, J., Petrović, R., Divnić-Resnik, T., Pajević, T., Popović, M., Stamenković, D.,& Stratimirović, Đ.. (2021). Supplementary data for the article: Jaćimović J, Petrović R, Divnić-Resnik T, Pajević T, Popović M, Stamenković D, Stratimirović Đ. Highly Cited Papers in Dental Medicine based on Essential Science Indicators. 2021. .
https://hdl.handle.net/21.15107/rcub_smile_2539

Jaćimović J, Petrović R, Divnić-Resnik T, Pajević T, Popović M, Stamenković D, Stratimirović Đ. Supplementary data for the article: Jaćimović J, Petrović R, Divnić-Resnik T, Pajević T, Popović M, Stamenković D, Stratimirović Đ. Highly Cited Papers in Dental Medicine based on Essential Science Indicators. 2021. 2021;.
https://hdl.handle.net/21.15107/rcub_smile_2539 .

Jaćimović, Jelena, Petrović, Renata, Divnić-Resnik, Tihana, Pajević, Tina, Popović, Milica, Stamenković, Dejan, Stratimirović, Đorđe, "Supplementary data for the article: Jaćimović J, Petrović R, Divnić-Resnik T, Pajević T, Popović M, Stamenković D, Stratimirović Đ. Highly Cited Papers in Dental Medicine based on Essential Science Indicators. 2021" (2021),
https://hdl.handle.net/21.15107/rcub_smile_2539 .

TY  - JOUR
AU  - Dželetović, Bojan
AU  - Aleksić, Nikola
AU  - Radak, Đorđe
AU  - Stratimirović, Đorđe
AU  - Đukić, Ljiljana
AU  - Stojić, Dragica
PY  - 2020
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2499
AB  - Introduction: Age-related changes of dental pulp tissue and atherosclerosis of carotid arteries as its feeding arteries could influence the functionality of pulpal circulation. The objective of our study was to evaluate the effect of aging (physiological process) and carotid bifurcation atherosclerosis (pathologic process) on the pulpal microcirculatory system using multifractal analysis of the laser Doppler flowmetry signal. Methods: Three groups of 10 subjects were enrolled in the study: the young group (healthy subjects, 20-25 years), the middle-aged group (healthy subjects, 50-60 years), and the clinical group (subjects with carotid bifurcation atherosclerosis, 50-60 years). Pulpal blood flow (PBF) signals recorded by laser Doppler flowmetry were assessed by multifractal analysis that estimates Holder exponents of the signal. PBF levels, the average mean values, and the range of Holder exponents were obtained. Results: PBF levels were significantly higher in the young group compared with the middle-aged and clinical groups, and the difference between the middle-aged and clinical groups was not statistically significant. The range of the Holder exponents was narrower in the middle-aged and clinical groups than in the young group and narrower in the clinical group than in the middle-aged group. The average mean value of Holder exponents was significantly higher in the young group than in the middle-aged and clinical groups, whereas there was no significant difference between the middle-aged and clinical groups. Conclusions: Our study investigating the multifractality of the PBF signal showed that the aging process and carotid atherosclerosis could affect the complex structure of PBF oscillations and contribute to a better understanding of pulpal hemodynamics.
PB  - Elsevier Science Inc, New York
T2  - Journal of Endodontics
T1  - Effect of Aging and Carotid Atherosclerosis on Multifractality of Dental Pulp Blood Flow Oscillations
VL  - 46
IS  - 3
SP  - 358
EP  - 363
DO  - 10.1016/j.joen.2019.12.008
ER  - 

@article{
author = "Dželetović, Bojan and Aleksić, Nikola and Radak, Đorđe and Stratimirović, Đorđe and Đukić, Ljiljana and Stojić, Dragica",
year = "2020",
abstract = "Introduction: Age-related changes of dental pulp tissue and atherosclerosis of carotid arteries as its feeding arteries could influence the functionality of pulpal circulation. The objective of our study was to evaluate the effect of aging (physiological process) and carotid bifurcation atherosclerosis (pathologic process) on the pulpal microcirculatory system using multifractal analysis of the laser Doppler flowmetry signal. Methods: Three groups of 10 subjects were enrolled in the study: the young group (healthy subjects, 20-25 years), the middle-aged group (healthy subjects, 50-60 years), and the clinical group (subjects with carotid bifurcation atherosclerosis, 50-60 years). Pulpal blood flow (PBF) signals recorded by laser Doppler flowmetry were assessed by multifractal analysis that estimates Holder exponents of the signal. PBF levels, the average mean values, and the range of Holder exponents were obtained. Results: PBF levels were significantly higher in the young group compared with the middle-aged and clinical groups, and the difference between the middle-aged and clinical groups was not statistically significant. The range of the Holder exponents was narrower in the middle-aged and clinical groups than in the young group and narrower in the clinical group than in the middle-aged group. The average mean value of Holder exponents was significantly higher in the young group than in the middle-aged and clinical groups, whereas there was no significant difference between the middle-aged and clinical groups. Conclusions: Our study investigating the multifractality of the PBF signal showed that the aging process and carotid atherosclerosis could affect the complex structure of PBF oscillations and contribute to a better understanding of pulpal hemodynamics.",
publisher = "Elsevier Science Inc, New York",
journal = "Journal of Endodontics",
title = "Effect of Aging and Carotid Atherosclerosis on Multifractality of Dental Pulp Blood Flow Oscillations",
volume = "46",
number = "3",
pages = "358-363",
doi = "10.1016/j.joen.2019.12.008"
}

Dželetović, B., Aleksić, N., Radak, Đ., Stratimirović, Đ., Đukić, L.,& Stojić, D.. (2020). Effect of Aging and Carotid Atherosclerosis on Multifractality of Dental Pulp Blood Flow Oscillations. in Journal of Endodontics
Elsevier Science Inc, New York., 46(3), 358-363.
https://doi.org/10.1016/j.joen.2019.12.008

Dželetović B, Aleksić N, Radak Đ, Stratimirović Đ, Đukić L, Stojić D. Effect of Aging and Carotid Atherosclerosis on Multifractality of Dental Pulp Blood Flow Oscillations. in Journal of Endodontics. 2020;46(3):358-363.
doi:10.1016/j.joen.2019.12.008 .

Dželetović, Bojan, Aleksić, Nikola, Radak, Đorđe, Stratimirović, Đorđe, Đukić, Ljiljana, Stojić, Dragica, "Effect of Aging and Carotid Atherosclerosis on Multifractality of Dental Pulp Blood Flow Oscillations" in Journal of Endodontics, 46, no. 3 (2020):358-363,
https://doi.org/10.1016/j.joen.2019.12.008 . .

TY  - JOUR
AU  - Blesić, Suzana
AU  - du Preez, D. Jean
AU  - Stratimirović, Đorđe
AU  - Ajtić, Jelena
AU  - Ramotsehoa, M. Cynthia
AU  - Allen, Martin W.
AU  - Wright, Caradee Y.
PY  - 2020
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2485
AB  - Studies of personal solar ultraviolet radiation (pUVR) exposure are important to identify populations at-risk of excess and insufficient exposure given the negative and positive health impacts, respectively, of time spent in the sun. Electronic UVR dosimeters measure personal solar UVR exposure at high frequency intervals generating large datasets. Sophisticated methods are needed to analyze these data. Previously, wavelet transform (WT) analysis was applied to high-frequency personal recordings collected by electronic UVR dosimeters. Those findings showed scaling behavior in the datasets that changed from uncorrelated to long-range correlated with increasing duration of time spent in the sun. We hypothesized that the WT slope would be influenced by the duration of time that a person spends in continuum outside. In this study, we address this hypothesis by using an experimental study approach. We aimed to corroborate this hypothesis and to characterize the extent and nature of influence time a person spends outside has on the shape of statistical functions that we used to analyze individual UVR exposure patterns. Detrended fluctuation analysis (DFA) was applied to personal sun exposure data. We analyzed sun exposure recordings from skiers (on snow) and hikers in Europe, golfers in New Zealand and outdoor workers in South Africa. Results confirmed validity of the DFA superposition rule for assessment of pUVR data and showed that pUVR scaling is determined by personal patterns of exposure on lower scales. We also showed that this dominance ends at the range of time scales comparable to the maximal duration of continuous exposure to solar UVR during the day; in this way the superposition rule can be used to quantify behavioral patterns, particularly accurate if it is determined on WT curves. These findings confirm a novel way in which large datasets of personal UVR data may be analyzed to inform messaging regarding safe sun exposure for human health.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Environmental Research
T1  - Characterization of personal solar ultraviolet radiation exposure using detrended fluctuation analysis
VL  - 182
DO  - 10.1016/j.envres.2019.108976
ER  - 

@article{
author = "Blesić, Suzana and du Preez, D. Jean and Stratimirović, Đorđe and Ajtić, Jelena and Ramotsehoa, M. Cynthia and Allen, Martin W. and Wright, Caradee Y.",
year = "2020",
abstract = "Studies of personal solar ultraviolet radiation (pUVR) exposure are important to identify populations at-risk of excess and insufficient exposure given the negative and positive health impacts, respectively, of time spent in the sun. Electronic UVR dosimeters measure personal solar UVR exposure at high frequency intervals generating large datasets. Sophisticated methods are needed to analyze these data. Previously, wavelet transform (WT) analysis was applied to high-frequency personal recordings collected by electronic UVR dosimeters. Those findings showed scaling behavior in the datasets that changed from uncorrelated to long-range correlated with increasing duration of time spent in the sun. We hypothesized that the WT slope would be influenced by the duration of time that a person spends in continuum outside. In this study, we address this hypothesis by using an experimental study approach. We aimed to corroborate this hypothesis and to characterize the extent and nature of influence time a person spends outside has on the shape of statistical functions that we used to analyze individual UVR exposure patterns. Detrended fluctuation analysis (DFA) was applied to personal sun exposure data. We analyzed sun exposure recordings from skiers (on snow) and hikers in Europe, golfers in New Zealand and outdoor workers in South Africa. Results confirmed validity of the DFA superposition rule for assessment of pUVR data and showed that pUVR scaling is determined by personal patterns of exposure on lower scales. We also showed that this dominance ends at the range of time scales comparable to the maximal duration of continuous exposure to solar UVR during the day; in this way the superposition rule can be used to quantify behavioral patterns, particularly accurate if it is determined on WT curves. These findings confirm a novel way in which large datasets of personal UVR data may be analyzed to inform messaging regarding safe sun exposure for human health.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Environmental Research",
title = "Characterization of personal solar ultraviolet radiation exposure using detrended fluctuation analysis",
volume = "182",
doi = "10.1016/j.envres.2019.108976"
}

Blesić, S., du Preez, D. J., Stratimirović, Đ., Ajtić, J., Ramotsehoa, M. C., Allen, M. W.,& Wright, C. Y.. (2020). Characterization of personal solar ultraviolet radiation exposure using detrended fluctuation analysis. in Environmental Research
Academic Press Inc Elsevier Science, San Diego., 182.
https://doi.org/10.1016/j.envres.2019.108976

Blesić S, du Preez DJ, Stratimirović Đ, Ajtić J, Ramotsehoa MC, Allen MW, Wright CY. Characterization of personal solar ultraviolet radiation exposure using detrended fluctuation analysis. in Environmental Research. 2020;182.
doi:10.1016/j.envres.2019.108976 .

Blesić, Suzana, du Preez, D. Jean, Stratimirović, Đorđe, Ajtić, Jelena, Ramotsehoa, M. Cynthia, Allen, Martin W., Wright, Caradee Y., "Characterization of personal solar ultraviolet radiation exposure using detrended fluctuation analysis" in Environmental Research, 182 (2020),
https://doi.org/10.1016/j.envres.2019.108976 . .

TY  - JOUR
AU  - Dželetović, Bojan
AU  - Stratimirović, Đorđe
AU  - Stojić, Dragica
AU  - Đukić, Ljiljana
PY  - 2020
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1049
AB  - Aim To investigate the effect of ageing on control mechanisms of pulpal microcirculation using wavelet analysis and to calculate linear and nonlinear parameters of blood flow oscillations, in a healthy general population. Methodology Pulpal blood flow (PBF) oscillations were recorded on right maxillary central incisors using laser Doppler Flowmeter (PeriFlux PF 5001, Perimed, Jarfalla, Sweden) on a group of 10 young participants (20-25 years) and a group of 10 older adults (60-70 years). In total, 20 recordings were obtained for at least 20 min (one recording on one tooth per subject). Using wavelet spectral analysis, the amplitude and power were calculated as a linear and Hurst exponent as a nonlinear parameter of PBF oscillations. Differences between the two groups were assessed with the independent Student t-test. Results Mean PBF levels were significantly lower (P = 0.024) in older adults than in young participants. Relative amplitudes and powers corresponding to the myogenic (P = 0.046, P  lt  0.001, respectively) and neurogenic activity (P = 0.04, P = 0.01, respectively) were significantly higher, whereas values corresponding to the endothelial function (P = 0.04, P = 0.01, respectively) were significantly lower in older adults than in young participants. Hurst exponents of the total spectrum, myogenic and endothelial component (P  lt  0.001, P = 0.02, P  lt  0.001, respectively) of PBF oscillations were significantly lower in older adults in comparison to young participants. Conclusions At the level of pulpal microcirculation, ageing was associated with altered blood flow levels, the contribution of different control mechanisms to blood flow oscillations as well as the interaction of vascular smooth muscle and endothelium. Described changes of pulpal haemodynamics contribute to a better understanding of physiological behaviour and decreased adaptability of aged dental pulp to pathological stimuli.
PB  - Wiley, Hoboken
T2  - International Endodontic Journal
T1  - Linear and nonlinear analysis of dental pulp blood flow oscillations in ageing
DO  - 10.1111/iej.13306
ER  - 

@article{
author = "Dželetović, Bojan and Stratimirović, Đorđe and Stojić, Dragica and Đukić, Ljiljana",
year = "2020",
abstract = "Aim To investigate the effect of ageing on control mechanisms of pulpal microcirculation using wavelet analysis and to calculate linear and nonlinear parameters of blood flow oscillations, in a healthy general population. Methodology Pulpal blood flow (PBF) oscillations were recorded on right maxillary central incisors using laser Doppler Flowmeter (PeriFlux PF 5001, Perimed, Jarfalla, Sweden) on a group of 10 young participants (20-25 years) and a group of 10 older adults (60-70 years). In total, 20 recordings were obtained for at least 20 min (one recording on one tooth per subject). Using wavelet spectral analysis, the amplitude and power were calculated as a linear and Hurst exponent as a nonlinear parameter of PBF oscillations. Differences between the two groups were assessed with the independent Student t-test. Results Mean PBF levels were significantly lower (P = 0.024) in older adults than in young participants. Relative amplitudes and powers corresponding to the myogenic (P = 0.046, P  lt  0.001, respectively) and neurogenic activity (P = 0.04, P = 0.01, respectively) were significantly higher, whereas values corresponding to the endothelial function (P = 0.04, P = 0.01, respectively) were significantly lower in older adults than in young participants. Hurst exponents of the total spectrum, myogenic and endothelial component (P  lt  0.001, P = 0.02, P  lt  0.001, respectively) of PBF oscillations were significantly lower in older adults in comparison to young participants. Conclusions At the level of pulpal microcirculation, ageing was associated with altered blood flow levels, the contribution of different control mechanisms to blood flow oscillations as well as the interaction of vascular smooth muscle and endothelium. Described changes of pulpal haemodynamics contribute to a better understanding of physiological behaviour and decreased adaptability of aged dental pulp to pathological stimuli.",
publisher = "Wiley, Hoboken",
journal = "International Endodontic Journal",
title = "Linear and nonlinear analysis of dental pulp blood flow oscillations in ageing",
doi = "10.1111/iej.13306"
}

Dželetović, B., Stratimirović, Đ., Stojić, D.,& Đukić, L.. (2020). Linear and nonlinear analysis of dental pulp blood flow oscillations in ageing. in International Endodontic Journal
Wiley, Hoboken..
https://doi.org/10.1111/iej.13306

Dželetović B, Stratimirović Đ, Stojić D, Đukić L. Linear and nonlinear analysis of dental pulp blood flow oscillations in ageing. in International Endodontic Journal. 2020;.
doi:10.1111/iej.13306 .

Dželetović, Bojan, Stratimirović, Đorđe, Stojić, Dragica, Đukić, Ljiljana, "Linear and nonlinear analysis of dental pulp blood flow oscillations in ageing" in International Endodontic Journal (2020),
https://doi.org/10.1111/iej.13306 . .

TY  - JOUR
AU  - Stratimirović, Đorđe
AU  - Sarvan, Darko
AU  - Miljković, Vladimir
AU  - Blesić, Suzana
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2329
AB  - In this paper we have analyzed scaling properties and cyclical behavior of the three types of stock market indexes (SMI) time series: data belonging to stock markets of developed economies, emerging economies, and of the underdeveloped or transitional economies. We have used two techniques of data analysis to obtain and verify our findings: the wavelet transform (WT) spectral analysis to identify cycles in the SMI returns data, and the time- dependent detrended moving average (tdDMA) analysis to investigate local behavior around market cycles and trends. We found cyclical behavior in all SMI data sets that we have analyzed. Moreover, the positions and the boundaries of cyclical intervals that we found seam to be common for all markets in our dataset. We list and illustrate the presence of nine such periods in our SMI data. We report on the possibilities to differ-entiate between the level of growth of the analyzed markets by way of statistical analysis of the properties of wavelet spectra that characterize particular peak behaviors. Our results show that measures like the relative WT energy content and the relative WT amplitude of the peaks in the small scales region could be used to partially differentiate between market economies. Finally, we propose a way to quantify the level of development of a stock market based on estimation of local complexity of market's SMI series. From the local scaling exponents calculated for our nine peak regions we have defined what we named the Development Index, which proved, at least in the case of our dataset, to be suitable to rank the SMI series that we have analyzed in three distinct groups.
PB  - Elsevier Science Bv, Amsterdam
T2  - Communications in Nonlinear Science & Numerical Simulation
T1  - Analysis of cyclical behavior in time series of stock market returns
VL  - 54
SP  - 21
EP  - 33
DO  - 10.1016/j.cnsns.2017.05.009
ER  - 

@article{
author = "Stratimirović, Đorđe and Sarvan, Darko and Miljković, Vladimir and Blesić, Suzana",
year = "2018",
abstract = "In this paper we have analyzed scaling properties and cyclical behavior of the three types of stock market indexes (SMI) time series: data belonging to stock markets of developed economies, emerging economies, and of the underdeveloped or transitional economies. We have used two techniques of data analysis to obtain and verify our findings: the wavelet transform (WT) spectral analysis to identify cycles in the SMI returns data, and the time- dependent detrended moving average (tdDMA) analysis to investigate local behavior around market cycles and trends. We found cyclical behavior in all SMI data sets that we have analyzed. Moreover, the positions and the boundaries of cyclical intervals that we found seam to be common for all markets in our dataset. We list and illustrate the presence of nine such periods in our SMI data. We report on the possibilities to differ-entiate between the level of growth of the analyzed markets by way of statistical analysis of the properties of wavelet spectra that characterize particular peak behaviors. Our results show that measures like the relative WT energy content and the relative WT amplitude of the peaks in the small scales region could be used to partially differentiate between market economies. Finally, we propose a way to quantify the level of development of a stock market based on estimation of local complexity of market's SMI series. From the local scaling exponents calculated for our nine peak regions we have defined what we named the Development Index, which proved, at least in the case of our dataset, to be suitable to rank the SMI series that we have analyzed in three distinct groups.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Communications in Nonlinear Science & Numerical Simulation",
title = "Analysis of cyclical behavior in time series of stock market returns",
volume = "54",
pages = "21-33",
doi = "10.1016/j.cnsns.2017.05.009"
}

Stratimirović, Đ., Sarvan, D., Miljković, V.,& Blesić, S.. (2018). Analysis of cyclical behavior in time series of stock market returns. in Communications in Nonlinear Science & Numerical Simulation
Elsevier Science Bv, Amsterdam., 54, 21-33.
https://doi.org/10.1016/j.cnsns.2017.05.009

Stratimirović Đ, Sarvan D, Miljković V, Blesić S. Analysis of cyclical behavior in time series of stock market returns. in Communications in Nonlinear Science & Numerical Simulation. 2018;54:21-33.
doi:10.1016/j.cnsns.2017.05.009 .

Stratimirović, Đorđe, Sarvan, Darko, Miljković, Vladimir, Blesić, Suzana, "Analysis of cyclical behavior in time series of stock market returns" in Communications in Nonlinear Science & Numerical Simulation, 54 (2018):21-33,
https://doi.org/10.1016/j.cnsns.2017.05.009 . .

TY  - JOUR
AU  - Sarvan, Darko
AU  - Stratimirović, Đorđe
AU  - Blesić, Suzana
AU  - Đurđević, Vladimir
AU  - Miljković, Vladimir
AU  - Ajtić, Jelena
PY  - 2017
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2198
AB  - The dynamics of the beryllium-7 specific activity in surface air over 1987-2011 is analyzed using wavelet transform (WT) analysis and time -dependent detrended moving average (tdDMA) method, WT analysis gives four periodicities in the beryllium-7 specific activity: one month, three months, one year, and three years. These intervals are further used in tdDMA to calculate local autocorrelation exponents for precipitation, tropopause height and teleconnection indices. Our results show that these parameters share common periods with the beryllium-7 surface concentration. tdDMA method indicates that on the characteristic intervals of one year and shorter, the beryllium-7 specific activity is strongly autocorrelated. On the three-year interval, the beryllium-7 specific activity shows periods of anticorrelat ion, implying slow changes in its dynamics that become evident only over a prolonged period of time. A comparison of the Hurst exponents of all the variables on the one- and three-year intervals suggest some similarities in their dynamics. Overall, a good agreement in the behavior of the teleconnection indices and specific activity of beryllium-7 in surface air is noted.
PB  - Elsevier, Amsterdam
T2  - Physica A-Statistical Mechanics & its Applications
T1  - Dynamics of beryllium-7 specific activity in relation to meteorological variables, tropopause height, teleconnection indices and sunspot number
VL  - 469
SP  - 813
EP  - 823
DO  - 10.1016/j.physa.2016.11.040
ER  - 

@article{
author = "Sarvan, Darko and Stratimirović, Đorđe and Blesić, Suzana and Đurđević, Vladimir and Miljković, Vladimir and Ajtić, Jelena",
year = "2017",
abstract = "The dynamics of the beryllium-7 specific activity in surface air over 1987-2011 is analyzed using wavelet transform (WT) analysis and time -dependent detrended moving average (tdDMA) method, WT analysis gives four periodicities in the beryllium-7 specific activity: one month, three months, one year, and three years. These intervals are further used in tdDMA to calculate local autocorrelation exponents for precipitation, tropopause height and teleconnection indices. Our results show that these parameters share common periods with the beryllium-7 surface concentration. tdDMA method indicates that on the characteristic intervals of one year and shorter, the beryllium-7 specific activity is strongly autocorrelated. On the three-year interval, the beryllium-7 specific activity shows periods of anticorrelat ion, implying slow changes in its dynamics that become evident only over a prolonged period of time. A comparison of the Hurst exponents of all the variables on the one- and three-year intervals suggest some similarities in their dynamics. Overall, a good agreement in the behavior of the teleconnection indices and specific activity of beryllium-7 in surface air is noted.",
publisher = "Elsevier, Amsterdam",
journal = "Physica A-Statistical Mechanics & its Applications",
title = "Dynamics of beryllium-7 specific activity in relation to meteorological variables, tropopause height, teleconnection indices and sunspot number",
volume = "469",
pages = "813-823",
doi = "10.1016/j.physa.2016.11.040"
}

Sarvan, D., Stratimirović, Đ., Blesić, S., Đurđević, V., Miljković, V.,& Ajtić, J.. (2017). Dynamics of beryllium-7 specific activity in relation to meteorological variables, tropopause height, teleconnection indices and sunspot number. in Physica A-Statistical Mechanics & its Applications
Elsevier, Amsterdam., 469, 813-823.
https://doi.org/10.1016/j.physa.2016.11.040

Sarvan D, Stratimirović Đ, Blesić S, Đurđević V, Miljković V, Ajtić J. Dynamics of beryllium-7 specific activity in relation to meteorological variables, tropopause height, teleconnection indices and sunspot number. in Physica A-Statistical Mechanics & its Applications. 2017;469:813-823.
doi:10.1016/j.physa.2016.11.040 .

Sarvan, Darko, Stratimirović, Đorđe, Blesić, Suzana, Đurđević, Vladimir, Miljković, Vladimir, Ajtić, Jelena, "Dynamics of beryllium-7 specific activity in relation to meteorological variables, tropopause height, teleconnection indices and sunspot number" in Physica A-Statistical Mechanics & its Applications, 469 (2017):813-823,
https://doi.org/10.1016/j.physa.2016.11.040 . .

TY  - JOUR
AU  - Blesić, Suzana
AU  - Stratimirović, Đorđe
AU  - Ajtić, Jelena
AU  - Wright, Caradee Y.
AU  - Allen, Martin W.
PY  - 2016
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2098
AB  - Personal sun exposure measurements provide important information to guide the development of sun awareness and disease prevention campaigns. We assess the scaling properties of personal ultraviolet radiation (pUVR) sun exposure measurements using the wavelet transform (WT) spectral analysis to process long-range, high-frequency personal recordings collected by electronic UVR dosimeters designed to measure erythemal UVR exposure. We analysed the sun exposure recordings of school children, farmers, marathon runners and outdoor workers in South Africa, and construction workers and work site supervisors in New Zealand. We found scaling behaviour in all the analysed pUVR data sets. We found that the observed scaling changes from uncorrelated to long-range correlated with increasing duration of sun exposure. Peaks in the WT spectra that we found suggest the existence of characteristic times in sun exposure behaviour that were to some extent universal across our data set. Our study also showed that WT measures enable group classification, as well as distinction between individual UVR exposures, otherwise unattainable by conventional statistical methods.
PB  - Nature Publishing Group, New York
T2  - Journal of Exposure Science & Environmental Epidemiology
T1  - Novel approach to analysing large data sets of personal sun exposure measurements
VL  - 26
IS  - 6
SP  - 613
EP  - 620
DO  - 10.1038/jes.2016.43
ER  - 

@article{
author = "Blesić, Suzana and Stratimirović, Đorđe and Ajtić, Jelena and Wright, Caradee Y. and Allen, Martin W.",
year = "2016",
abstract = "Personal sun exposure measurements provide important information to guide the development of sun awareness and disease prevention campaigns. We assess the scaling properties of personal ultraviolet radiation (pUVR) sun exposure measurements using the wavelet transform (WT) spectral analysis to process long-range, high-frequency personal recordings collected by electronic UVR dosimeters designed to measure erythemal UVR exposure. We analysed the sun exposure recordings of school children, farmers, marathon runners and outdoor workers in South Africa, and construction workers and work site supervisors in New Zealand. We found scaling behaviour in all the analysed pUVR data sets. We found that the observed scaling changes from uncorrelated to long-range correlated with increasing duration of sun exposure. Peaks in the WT spectra that we found suggest the existence of characteristic times in sun exposure behaviour that were to some extent universal across our data set. Our study also showed that WT measures enable group classification, as well as distinction between individual UVR exposures, otherwise unattainable by conventional statistical methods.",
publisher = "Nature Publishing Group, New York",
journal = "Journal of Exposure Science & Environmental Epidemiology",
title = "Novel approach to analysing large data sets of personal sun exposure measurements",
volume = "26",
number = "6",
pages = "613-620",
doi = "10.1038/jes.2016.43"
}

Blesić, S., Stratimirović, Đ., Ajtić, J., Wright, C. Y.,& Allen, M. W.. (2016). Novel approach to analysing large data sets of personal sun exposure measurements. in Journal of Exposure Science & Environmental Epidemiology
Nature Publishing Group, New York., 26(6), 613-620.
https://doi.org/10.1038/jes.2016.43

Blesić S, Stratimirović Đ, Ajtić J, Wright CY, Allen MW. Novel approach to analysing large data sets of personal sun exposure measurements. in Journal of Exposure Science & Environmental Epidemiology. 2016;26(6):613-620.
doi:10.1038/jes.2016.43 .

Blesić, Suzana, Stratimirović, Đorđe, Ajtić, Jelena, Wright, Caradee Y., Allen, Martin W., "Novel approach to analysing large data sets of personal sun exposure measurements" in Journal of Exposure Science & Environmental Epidemiology, 26, no. 6 (2016):613-620,
https://doi.org/10.1038/jes.2016.43 . .

TY  - CONF
AU  - Stratimirović, Đorđe
AU  - Blesić, Suzana
AU  - Wright, Caradee Y.
AU  - Allen, Martin W.
AU  - Ajtić, Jelena
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2057
AB  - Scaling properties of personal solar ultraviolet radiation exposure (pUVR) recordings are investigated using the Wavelet Transform (WT) spectral analysis. Personal UVR recordings are collected by UVR monitors designed to measure erythemal UVR. Sun exposure recordings of a school child, farmer, marathon runner and outdoor worker in South Africa are analyzed. A scaling behavior in all analyzed pUVR datasets is found. The scaling behavior changes from uncorrelated to long-range correlated as duration of a person's solar exposure increases. The slopes of calculated WT power vary from 0, in the uncorrelated case for persons with erratic activities in reference to their UVR exposure, to close to 1 in the case of long-range correlated pUVR data, for persons spending longer periods in the sun. Peaks in the WT power spectra are also found, pointing to the existence of characteristic times in sun exposure behavior. Characteristic peaks at approximately 15 minutes, half an hour and an hour are present in all pUVR data, while persons with longer sun exposure have additional peaks at longer periods.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Wavelet analysis of personal solar UVR exposure
VL  - 2015-June
SP  - 443
EP  - 446
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_1253
ER  - 

@conference{
author = "Stratimirović, Đorđe and Blesić, Suzana and Wright, Caradee Y. and Allen, Martin W. and Ajtić, Jelena",
year = "2015",
abstract = "Scaling properties of personal solar ultraviolet radiation exposure (pUVR) recordings are investigated using the Wavelet Transform (WT) spectral analysis. Personal UVR recordings are collected by UVR monitors designed to measure erythemal UVR. Sun exposure recordings of a school child, farmer, marathon runner and outdoor worker in South Africa are analyzed. A scaling behavior in all analyzed pUVR datasets is found. The scaling behavior changes from uncorrelated to long-range correlated as duration of a person's solar exposure increases. The slopes of calculated WT power vary from 0, in the uncorrelated case for persons with erratic activities in reference to their UVR exposure, to close to 1 in the case of long-range correlated pUVR data, for persons spending longer periods in the sun. Peaks in the WT power spectra are also found, pointing to the existence of characteristic times in sun exposure behavior. Characteristic peaks at approximately 15 minutes, half an hour and an hour are present in all pUVR data, while persons with longer sun exposure have additional peaks at longer periods.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Wavelet analysis of personal solar UVR exposure",
volume = "2015-June",
pages = "443-446",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_1253"
}

Stratimirović, Đ., Blesić, S., Wright, C. Y., Allen, M. W.,& Ajtić, J.. (2015). Wavelet analysis of personal solar UVR exposure. in RAD Conference Proceedings
RAD Association., 2015-June, 443-446.
https://hdl.handle.net/21.15107/rcub_veterinar_1253

Stratimirović Đ, Blesić S, Wright CY, Allen MW, Ajtić J. Wavelet analysis of personal solar UVR exposure. in RAD Conference Proceedings. 2015;2015-June:443-446.
https://hdl.handle.net/21.15107/rcub_veterinar_1253 .

Stratimirović, Đorđe, Blesić, Suzana, Wright, Caradee Y., Allen, Martin W., Ajtić, Jelena, "Wavelet analysis of personal solar UVR exposure" in RAD Conference Proceedings, 2015-June (2015):443-446,
https://hdl.handle.net/21.15107/rcub_veterinar_1253 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Maletić, Dimitrije
AU  - Stratimirović, Đorđe
AU  - Blesić, Suzana
AU  - Nikolić, Jelena
AU  - Đurđević, Vladimir
AU  - Todorović, Dragana
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2056
AB  - Dependence of the lead-210 activity concentration in surface air on meteorological variables and teleconnection indices is investigated using multivariate analysis, which gives the Boosted Decision Trees method as the most suitable for variable analysis. A mapped functional behaviour of the lead-210 activity concentration is further obtained, and used to test predictability of lead-210 in surface air. The results show an agreement between the predicted and measured values. The temporal evolution of the measured activities is satisfactorily matched by the prediction. The largest qualitative differences are obtained for winter months.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Predictability of lead-210 in surface air based on multivariate analysis
VL  - 2015-June
SP  - 317
EP  - 322
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7129
ER  - 

@conference{
author = "Ajtić, Jelena and Maletić, Dimitrije and Stratimirović, Đorđe and Blesić, Suzana and Nikolić, Jelena and Đurđević, Vladimir and Todorović, Dragana",
year = "2015",
abstract = "Dependence of the lead-210 activity concentration in surface air on meteorological variables and teleconnection indices is investigated using multivariate analysis, which gives the Boosted Decision Trees method as the most suitable for variable analysis. A mapped functional behaviour of the lead-210 activity concentration is further obtained, and used to test predictability of lead-210 in surface air. The results show an agreement between the predicted and measured values. The temporal evolution of the measured activities is satisfactorily matched by the prediction. The largest qualitative differences are obtained for winter months.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Predictability of lead-210 in surface air based on multivariate analysis",
volume = "2015-June",
pages = "317-322",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7129"
}

Ajtić, J., Maletić, D., Stratimirović, Đ., Blesić, S., Nikolić, J., Đurđević, V.,& Todorović, D.. (2015). Predictability of lead-210 in surface air based on multivariate analysis. in RAD Conference Proceedings
RAD Association., 2015-June, 317-322.
https://hdl.handle.net/21.15107/rcub_vinar_7129

Ajtić J, Maletić D, Stratimirović Đ, Blesić S, Nikolić J, Đurđević V, Todorović D. Predictability of lead-210 in surface air based on multivariate analysis. in RAD Conference Proceedings. 2015;2015-June:317-322.
https://hdl.handle.net/21.15107/rcub_vinar_7129 .

Ajtić, Jelena, Maletić, Dimitrije, Stratimirović, Đorđe, Blesić, Suzana, Nikolić, Jelena, Đurđević, Vladimir, Todorović, Dragana, "Predictability of lead-210 in surface air based on multivariate analysis" in RAD Conference Proceedings, 2015-June (2015):317-322,
https://hdl.handle.net/21.15107/rcub_vinar_7129 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Stratimirović, Đorđe
AU  - Đurđević, Vladimir
AU  - Todorović, D.
AU  - Nikolić, J.
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1934
AB  - Activities of beryllium-7 and lead-210 are monitored in ground level air in Belgrade, Serbia. The measuring sites are located at the Institute of Nuclear Sciences Vinča. The activities are determined on HPGe detectors by standard gamma spectrometry. Five teleconnection indices of large scale atmospheric circulation: North Atlantic Oscillation, East Atlantic Pattern, East Atlantic/West Russia Pattern, Scandinavia Pattern, and Polar/Eurasia Pattern are obtained from the data archive of the United States National Oceanic and Atmospheric Administration's Climate Prediction Center. The collected time series consist of monthly values and span more than two decades: beryllium-7 since 1991, lead-210 since 1985, and the teleconnection indices since 1950, thus offering data arrays of sufficient lengths for wavelet spectral analysis. A relation between the radionuclides' activities and the indices is first investigated using Pearson's correlation coefficients. The computed coefficients do not indicate a linear relationship between the variables. However, the wavelet spectral analysis shows a number of common characteristic frequencies in the data arrays. The annual cycle of all the variables is clearly evident. A common time period of two to three years is also found, as well as a higher frequency variability corresponding to five to six months.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Wavelet spectral analysis of teleconnection indices and activities of beryllium-7 and lead-210 in ground level air in Belgrade, Serbia
VL  - 2014-May
SP  - 53
EP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_1130
ER  - 

@conference{
author = "Ajtić, Jelena and Stratimirović, Đorđe and Đurđević, Vladimir and Todorović, D. and Nikolić, J.",
year = "2014",
abstract = "Activities of beryllium-7 and lead-210 are monitored in ground level air in Belgrade, Serbia. The measuring sites are located at the Institute of Nuclear Sciences Vinča. The activities are determined on HPGe detectors by standard gamma spectrometry. Five teleconnection indices of large scale atmospheric circulation: North Atlantic Oscillation, East Atlantic Pattern, East Atlantic/West Russia Pattern, Scandinavia Pattern, and Polar/Eurasia Pattern are obtained from the data archive of the United States National Oceanic and Atmospheric Administration's Climate Prediction Center. The collected time series consist of monthly values and span more than two decades: beryllium-7 since 1991, lead-210 since 1985, and the teleconnection indices since 1950, thus offering data arrays of sufficient lengths for wavelet spectral analysis. A relation between the radionuclides' activities and the indices is first investigated using Pearson's correlation coefficients. The computed coefficients do not indicate a linear relationship between the variables. However, the wavelet spectral analysis shows a number of common characteristic frequencies in the data arrays. The annual cycle of all the variables is clearly evident. A common time period of two to three years is also found, as well as a higher frequency variability corresponding to five to six months.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Wavelet spectral analysis of teleconnection indices and activities of beryllium-7 and lead-210 in ground level air in Belgrade, Serbia",
volume = "2014-May",
pages = "53-56",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_1130"
}

Ajtić, J., Stratimirović, Đ., Đurđević, V., Todorović, D.,& Nikolić, J.. (2014). Wavelet spectral analysis of teleconnection indices and activities of beryllium-7 and lead-210 in ground level air in Belgrade, Serbia. in RAD Conference Proceedings
RAD Association., 2014-May, 53-56.
https://hdl.handle.net/21.15107/rcub_veterinar_1130

Ajtić J, Stratimirović Đ, Đurđević V, Todorović D, Nikolić J. Wavelet spectral analysis of teleconnection indices and activities of beryllium-7 and lead-210 in ground level air in Belgrade, Serbia. in RAD Conference Proceedings. 2014;2014-May:53-56.
https://hdl.handle.net/21.15107/rcub_veterinar_1130 .

Ajtić, Jelena, Stratimirović, Đorđe, Đurđević, Vladimir, Todorović, D., Nikolić, J., "Wavelet spectral analysis of teleconnection indices and activities of beryllium-7 and lead-210 in ground level air in Belgrade, Serbia" in RAD Conference Proceedings, 2014-May (2014):53-56,
https://hdl.handle.net/21.15107/rcub_veterinar_1130 .

TY  - JOUR
AU  - Sarvan, Darko
AU  - Stratimirović, Đorđe
AU  - Blesić, Suzana
AU  - Miljković, Vladimir
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1890
AB  - In this paper we have analyzed scaling properties of time series of stock market indices (SMIs) of developing economies of Western Balkans, and have compared the results we have obtained with the results from more developed economies. We have used three different techniques of data analysis to obtain and verify our findings: detrended fluctuation analysis (DFA) method, detrended moving average (DMA) method, and wavelet transformation (WT) analysis. We have found scaling behavior in all SMI data sets that we have analyzed. The scaling of our SMI series changes from long-range correlated to slightly anti-correlated behavior with the change in growth or maturity of the economy the stock market is embedded in. We also report the presence of effects of potential periodic-like influences on the SMI data that we have analyzed. One such influence is visible in all our SMI series, and appears at a period T-p approximate to 90 days. We propose that the existence of various periodic-like influences on SMI data may partially explain the observed difference in types of correlated behavior of corresponding scaling functions.
PB  - Springer, New York
T2  - European Physical Journal B
T1  - Scaling analysis of time series of daily prices from stock markets of transitional economies in the Western Balkans
VL  - 87
IS  - 12
DO  - 10.1140/epjb/e2014-50655-5
ER  - 

@article{
author = "Sarvan, Darko and Stratimirović, Đorđe and Blesić, Suzana and Miljković, Vladimir",
year = "2014",
abstract = "In this paper we have analyzed scaling properties of time series of stock market indices (SMIs) of developing economies of Western Balkans, and have compared the results we have obtained with the results from more developed economies. We have used three different techniques of data analysis to obtain and verify our findings: detrended fluctuation analysis (DFA) method, detrended moving average (DMA) method, and wavelet transformation (WT) analysis. We have found scaling behavior in all SMI data sets that we have analyzed. The scaling of our SMI series changes from long-range correlated to slightly anti-correlated behavior with the change in growth or maturity of the economy the stock market is embedded in. We also report the presence of effects of potential periodic-like influences on the SMI data that we have analyzed. One such influence is visible in all our SMI series, and appears at a period T-p approximate to 90 days. We propose that the existence of various periodic-like influences on SMI data may partially explain the observed difference in types of correlated behavior of corresponding scaling functions.",
publisher = "Springer, New York",
journal = "European Physical Journal B",
title = "Scaling analysis of time series of daily prices from stock markets of transitional economies in the Western Balkans",
volume = "87",
number = "12",
doi = "10.1140/epjb/e2014-50655-5"
}

Sarvan, D., Stratimirović, Đ., Blesić, S.,& Miljković, V.. (2014). Scaling analysis of time series of daily prices from stock markets of transitional economies in the Western Balkans. in European Physical Journal B
Springer, New York., 87(12).
https://doi.org/10.1140/epjb/e2014-50655-5

Sarvan D, Stratimirović Đ, Blesić S, Miljković V. Scaling analysis of time series of daily prices from stock markets of transitional economies in the Western Balkans. in European Physical Journal B. 2014;87(12).
doi:10.1140/epjb/e2014-50655-5 .

Sarvan, Darko, Stratimirović, Đorđe, Blesić, Suzana, Miljković, Vladimir, "Scaling analysis of time series of daily prices from stock markets of transitional economies in the Western Balkans" in European Physical Journal B, 87, no. 12 (2014),
https://doi.org/10.1140/epjb/e2014-50655-5 . .

TY  - JOUR
AU  - Dželetović, Bojan
AU  - Grga, Đurica
AU  - Kršljak, Elena
AU  - Stratimirović, Đorđe
AU  - Brković, Božidar
AU  - Stojić, Dragica
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1760
AB  - Introduction: The skin microcirculation is significantly affected by serum estrogen levels. The objective of this study was to investigate the effects of estrogen serum level changes associated with the menstrual cycle and postmenopause on dental pulp blood flow (PBF) as well as its dynamics. Methods: Young women at the menstrual phase (low serum estrogen levels) and in the mid-cycle phase of the menstrual cycle (high serum estrogen levels) and postmenopausal women were enrolled in the study. PBF and its oscillations were measured by laser Doppler flowmetry and analyzed by using wavelet transform. Serum levels of estradiol-17 beta were measured by immunoassay. Results: PBFs of young women in the menstrual phase and postmenopausal women were mutually similar and significantly lower than those of young women in the mid-cycle period. With respect to the mid-cycle phase, relative amplitude and power were significantly increased in the interval 0.0095-0.02 Hz and decreased in the intervals 0.02-0.06 and 0.06-0.2 Hz in the menstrual phase. A significant decrease in 0.0095-0.02 Hz and increase in 0.02-0.06, 0.06-0.2, 0.2-0.6, and 0.6-1.6 Hz intervals were observed in postmenopause. Conclusions: The study has shown that the menstrual phase of the menstrual cycle and postmenopause have similar PBF decrease, but PBF oscillations are differently affected in the mid-cycle phase. (J Endod 2012;38:1187-1191)
PB  - Elsevier Science Inc, New York
T2  - Journal of Endodontics
T1  - Dental Pulp Blood Flow and Its Oscillations in Women with Different Estrogen Status
VL  - 38
IS  - 9
SP  - 1187
EP  - 1191
DO  - 10.1016/j.joen.2012.06.009
ER  - 

@article{
author = "Dželetović, Bojan and Grga, Đurica and Kršljak, Elena and Stratimirović, Đorđe and Brković, Božidar and Stojić, Dragica",
year = "2012",
abstract = "Introduction: The skin microcirculation is significantly affected by serum estrogen levels. The objective of this study was to investigate the effects of estrogen serum level changes associated with the menstrual cycle and postmenopause on dental pulp blood flow (PBF) as well as its dynamics. Methods: Young women at the menstrual phase (low serum estrogen levels) and in the mid-cycle phase of the menstrual cycle (high serum estrogen levels) and postmenopausal women were enrolled in the study. PBF and its oscillations were measured by laser Doppler flowmetry and analyzed by using wavelet transform. Serum levels of estradiol-17 beta were measured by immunoassay. Results: PBFs of young women in the menstrual phase and postmenopausal women were mutually similar and significantly lower than those of young women in the mid-cycle period. With respect to the mid-cycle phase, relative amplitude and power were significantly increased in the interval 0.0095-0.02 Hz and decreased in the intervals 0.02-0.06 and 0.06-0.2 Hz in the menstrual phase. A significant decrease in 0.0095-0.02 Hz and increase in 0.02-0.06, 0.06-0.2, 0.2-0.6, and 0.6-1.6 Hz intervals were observed in postmenopause. Conclusions: The study has shown that the menstrual phase of the menstrual cycle and postmenopause have similar PBF decrease, but PBF oscillations are differently affected in the mid-cycle phase. (J Endod 2012;38:1187-1191)",
publisher = "Elsevier Science Inc, New York",
journal = "Journal of Endodontics",
title = "Dental Pulp Blood Flow and Its Oscillations in Women with Different Estrogen Status",
volume = "38",
number = "9",
pages = "1187-1191",
doi = "10.1016/j.joen.2012.06.009"
}

Dželetović, B., Grga, Đ., Kršljak, E., Stratimirović, Đ., Brković, B.,& Stojić, D.. (2012). Dental Pulp Blood Flow and Its Oscillations in Women with Different Estrogen Status. in Journal of Endodontics
Elsevier Science Inc, New York., 38(9), 1187-1191.
https://doi.org/10.1016/j.joen.2012.06.009

Dželetović B, Grga Đ, Kršljak E, Stratimirović Đ, Brković B, Stojić D. Dental Pulp Blood Flow and Its Oscillations in Women with Different Estrogen Status. in Journal of Endodontics. 2012;38(9):1187-1191.
doi:10.1016/j.joen.2012.06.009 .

Dželetović, Bojan, Grga, Đurica, Kršljak, Elena, Stratimirović, Đorđe, Brković, Božidar, Stojić, Dragica, "Dental Pulp Blood Flow and Its Oscillations in Women with Different Estrogen Status" in Journal of Endodontics, 38, no. 9 (2012):1187-1191,
https://doi.org/10.1016/j.joen.2012.06.009 . .

TY  - JOUR
AU  - Blesić, Suzana
AU  - Stratimirović, Đorđe
AU  - Milošević, S.
AU  - Marić, J.
AU  - Kostić, V.
AU  - Ljubisavljević, M.
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1622
AB  - In this paper we have used the Wavelet Transform (WT) and the Detrended Fluctuation Analysis (DFA) methods to analyze hand tremor movements in essential tremor (ET), in two different recording conditions (before and after the addition of wrist-cuff load). We have analyzed the time series comprised of peak-to-peak (PtP) intervals, extracted from regions around the first three main frequency components of the power spectra (PwS) of the recorded tremors, in order to substantiate results related to the effects of load on ET, to distinguish between multiple sources of ET, and to separate the influence of peripheral factors on ET. Our results show that, in ET, the dynamical characteristics, that is, values of respective scaling exponents, of the main frequency component of recorded tremors change after the addition of load. Our results also show that in all the observed cases the scaling behavior of the calculated functions changes as well the calculated WT scalegrams and DFA functions display a shift in the position of the crossover when the load is added. We conclude that the difference in behavior of the WT and DFA functions between different conditions in ET could be associated with the expected pathology in ET, or with some additional mechanism that controls movements in ET patients, and causes the observed changes in scaling behavior.
PB  - Elsevier, Amsterdam
T2  - Physica A-Statistical Mechanics & its Applications
T1  - Scaling analysis of the effects of load on hand tremor movements in essential tremor
VL  - 390
IS  - 10
SP  - 1741
EP  - 1746
DO  - 10.1016/j.physa.2010.12.037
ER  - 

@article{
author = "Blesić, Suzana and Stratimirović, Đorđe and Milošević, S. and Marić, J. and Kostić, V. and Ljubisavljević, M.",
year = "2011",
abstract = "In this paper we have used the Wavelet Transform (WT) and the Detrended Fluctuation Analysis (DFA) methods to analyze hand tremor movements in essential tremor (ET), in two different recording conditions (before and after the addition of wrist-cuff load). We have analyzed the time series comprised of peak-to-peak (PtP) intervals, extracted from regions around the first three main frequency components of the power spectra (PwS) of the recorded tremors, in order to substantiate results related to the effects of load on ET, to distinguish between multiple sources of ET, and to separate the influence of peripheral factors on ET. Our results show that, in ET, the dynamical characteristics, that is, values of respective scaling exponents, of the main frequency component of recorded tremors change after the addition of load. Our results also show that in all the observed cases the scaling behavior of the calculated functions changes as well the calculated WT scalegrams and DFA functions display a shift in the position of the crossover when the load is added. We conclude that the difference in behavior of the WT and DFA functions between different conditions in ET could be associated with the expected pathology in ET, or with some additional mechanism that controls movements in ET patients, and causes the observed changes in scaling behavior.",
publisher = "Elsevier, Amsterdam",
journal = "Physica A-Statistical Mechanics & its Applications",
title = "Scaling analysis of the effects of load on hand tremor movements in essential tremor",
volume = "390",
number = "10",
pages = "1741-1746",
doi = "10.1016/j.physa.2010.12.037"
}

Blesić, S., Stratimirović, Đ., Milošević, S., Marić, J., Kostić, V.,& Ljubisavljević, M.. (2011). Scaling analysis of the effects of load on hand tremor movements in essential tremor. in Physica A-Statistical Mechanics & its Applications
Elsevier, Amsterdam., 390(10), 1741-1746.
https://doi.org/10.1016/j.physa.2010.12.037

Blesić S, Stratimirović Đ, Milošević S, Marić J, Kostić V, Ljubisavljević M. Scaling analysis of the effects of load on hand tremor movements in essential tremor. in Physica A-Statistical Mechanics & its Applications. 2011;390(10):1741-1746.
doi:10.1016/j.physa.2010.12.037 .

Blesić, Suzana, Stratimirović, Đorđe, Milošević, S., Marić, J., Kostić, V., Ljubisavljević, M., "Scaling analysis of the effects of load on hand tremor movements in essential tremor" in Physica A-Statistical Mechanics & its Applications, 390, no. 10 (2011):1741-1746,
https://doi.org/10.1016/j.physa.2010.12.037 . .

TY  - JOUR
AU  - Stratimirović, Đorđe
AU  - Milošević, S.
AU  - Blesić, Suzana
AU  - Ljubisavljević, Miloš
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1337
AB  - We have studied the stimulated discharge dynamics of fusimotor neurons by applying the wavelet transform technique and by adopting that the neuronal discharge dynamics is manifested by the random time series of interspike intervals. We found two different power-law type behaviors along interspike intervals (ISI) time scale (which implies existence of two different types of neuronal noise), which are separated by a crossover region. Our results reveal that complex neuronal dynamics, in the presence of external stimulation, is manifested with long-range correlated noise in the region before the crossover, on the ISI time scale.
PB  - Elsevier Science Bv, Amsterdam
T2  - Physica A-Statistical Mechanics & its Applications
T1  - Wavelet transform analysis of time series generated by the stimulated neuronal activity
VL  - 374
IS  - 2
SP  - 699
EP  - 706
DO  - 10.1016/j.physa.2006.08.075
ER  - 

@article{
author = "Stratimirović, Đorđe and Milošević, S. and Blesić, Suzana and Ljubisavljević, Miloš",
year = "2007",
abstract = "We have studied the stimulated discharge dynamics of fusimotor neurons by applying the wavelet transform technique and by adopting that the neuronal discharge dynamics is manifested by the random time series of interspike intervals. We found two different power-law type behaviors along interspike intervals (ISI) time scale (which implies existence of two different types of neuronal noise), which are separated by a crossover region. Our results reveal that complex neuronal dynamics, in the presence of external stimulation, is manifested with long-range correlated noise in the region before the crossover, on the ISI time scale.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Physica A-Statistical Mechanics & its Applications",
title = "Wavelet transform analysis of time series generated by the stimulated neuronal activity",
volume = "374",
number = "2",
pages = "699-706",
doi = "10.1016/j.physa.2006.08.075"
}

Stratimirović, Đ., Milošević, S., Blesić, S.,& Ljubisavljević, M.. (2007). Wavelet transform analysis of time series generated by the stimulated neuronal activity. in Physica A-Statistical Mechanics & its Applications
Elsevier Science Bv, Amsterdam., 374(2), 699-706.
https://doi.org/10.1016/j.physa.2006.08.075

Stratimirović Đ, Milošević S, Blesić S, Ljubisavljević M. Wavelet transform analysis of time series generated by the stimulated neuronal activity. in Physica A-Statistical Mechanics & its Applications. 2007;374(2):699-706.
doi:10.1016/j.physa.2006.08.075 .

Stratimirović, Đorđe, Milošević, S., Blesić, Suzana, Ljubisavljević, Miloš, "Wavelet transform analysis of time series generated by the stimulated neuronal activity" in Physica A-Statistical Mechanics & its Applications, 374, no. 2 (2007):699-706,
https://doi.org/10.1016/j.physa.2006.08.075 . .

TY  - JOUR
AU  - Blesić, Suzana
AU  - Stratimirović, Đorđe
AU  - Milošević, S.
AU  - Ljubisavljević, Miloš
PY  - 2005
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1267
AB  - We have studied the discharge dynamics of dorsal horn neurons by applying the detrended fluctuation analysis and the wavelet transform technique. We have adopted that the neuronal discharge dynamics is manifested by the random time series of interspike intervals. In all cases studied, we found two different power-law type behaviors across interspike intervals enumeration scale, that are separated by crossover regions (which implies existence of two different types of neuronal noise). Our results reveal that complex neuronal dynamics may change in the presence of external stimulation, manifested by changing of the noise characteristics that appear before crossover.
PB  - New York Acad Sciences, New York
T2  - Biophysics from Molecules to Brain: in Memory of Radoslav K. Andjus
T1  - Detecting long-range correlations in time series of dorsal horn neuron discharges
VL  - 1048
SP  - 385
EP  - 391
DO  - 10.1196/annals.1342.046
ER  - 

@article{
author = "Blesić, Suzana and Stratimirović, Đorđe and Milošević, S. and Ljubisavljević, Miloš",
year = "2005",
abstract = "We have studied the discharge dynamics of dorsal horn neurons by applying the detrended fluctuation analysis and the wavelet transform technique. We have adopted that the neuronal discharge dynamics is manifested by the random time series of interspike intervals. In all cases studied, we found two different power-law type behaviors across interspike intervals enumeration scale, that are separated by crossover regions (which implies existence of two different types of neuronal noise). Our results reveal that complex neuronal dynamics may change in the presence of external stimulation, manifested by changing of the noise characteristics that appear before crossover.",
publisher = "New York Acad Sciences, New York",
journal = "Biophysics from Molecules to Brain: in Memory of Radoslav K. Andjus",
title = "Detecting long-range correlations in time series of dorsal horn neuron discharges",
volume = "1048",
pages = "385-391",
doi = "10.1196/annals.1342.046"
}

Blesić, S., Stratimirović, Đ., Milošević, S.,& Ljubisavljević, M.. (2005). Detecting long-range correlations in time series of dorsal horn neuron discharges. in Biophysics from Molecules to Brain: in Memory of Radoslav K. Andjus
New York Acad Sciences, New York., 1048, 385-391.
https://doi.org/10.1196/annals.1342.046

Blesić S, Stratimirović Đ, Milošević S, Ljubisavljević M. Detecting long-range correlations in time series of dorsal horn neuron discharges. in Biophysics from Molecules to Brain: in Memory of Radoslav K. Andjus. 2005;1048:385-391.
doi:10.1196/annals.1342.046 .

Blesić, Suzana, Stratimirović, Đorđe, Milošević, S., Ljubisavljević, Miloš, "Detecting long-range correlations in time series of dorsal horn neuron discharges" in Biophysics from Molecules to Brain: in Memory of Radoslav K. Andjus, 1048 (2005):385-391,
https://doi.org/10.1196/annals.1342.046 . .

TY  - JOUR
AU  - Blesić, Suzana
AU  - Milošević, S.
AU  - Stratimirović, Đorđe
AU  - Ljubisavljević, Miloš
PY  - 2003
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1191
AB  - We have studied the discharge dynamics of dorsal horn neurons (DHN) by applying the detrended fluctuation analysis (DFA) and the wavelet transform (WT) technique. We have adopted that discharge dynamics is manifested by the random time series of the interspike intervals (ISI), that is, by intervals between two consecutive neuronal electrical activities. In all cases studied, we found two different power-law type behaviors across ISI enumeration scale, that are separated by a crossover region. Our results reveal that complex neuronal dynamics may change in the presence of external stimulation, which is manifested by changing the noise characteristics that appear before the crossover region (the noise after the crossover region is of the 1/f type).
PB  - Elsevier, Amsterdam
T2  - Physica A-Statistical Mechanics & its Applications
T1  - Detecting long-range correlations in time series of neuronal discharges
VL  - 330
IS  - 3-4
SP  - 391
EP  - 399
DO  - 10.1016/j.physa.2003.09.002
ER  - 

@article{
author = "Blesić, Suzana and Milošević, S. and Stratimirović, Đorđe and Ljubisavljević, Miloš",
year = "2003",
abstract = "We have studied the discharge dynamics of dorsal horn neurons (DHN) by applying the detrended fluctuation analysis (DFA) and the wavelet transform (WT) technique. We have adopted that discharge dynamics is manifested by the random time series of the interspike intervals (ISI), that is, by intervals between two consecutive neuronal electrical activities. In all cases studied, we found two different power-law type behaviors across ISI enumeration scale, that are separated by a crossover region. Our results reveal that complex neuronal dynamics may change in the presence of external stimulation, which is manifested by changing the noise characteristics that appear before the crossover region (the noise after the crossover region is of the 1/f type).",
publisher = "Elsevier, Amsterdam",
journal = "Physica A-Statistical Mechanics & its Applications",
title = "Detecting long-range correlations in time series of neuronal discharges",
volume = "330",
number = "3-4",
pages = "391-399",
doi = "10.1016/j.physa.2003.09.002"
}

Blesić, S., Milošević, S., Stratimirović, Đ.,& Ljubisavljević, M.. (2003). Detecting long-range correlations in time series of neuronal discharges. in Physica A-Statistical Mechanics & its Applications
Elsevier, Amsterdam., 330(3-4), 391-399.
https://doi.org/10.1016/j.physa.2003.09.002

Blesić S, Milošević S, Stratimirović Đ, Ljubisavljević M. Detecting long-range correlations in time series of neuronal discharges. in Physica A-Statistical Mechanics & its Applications. 2003;330(3-4):391-399.
doi:10.1016/j.physa.2003.09.002 .

Blesić, Suzana, Milošević, S., Stratimirović, Đorđe, Ljubisavljević, Miloš, "Detecting long-range correlations in time series of neuronal discharges" in Physica A-Statistical Mechanics & its Applications, 330, no. 3-4 (2003):391-399,
https://doi.org/10.1016/j.physa.2003.09.002 . .

TY  - JOUR
AU  - Milošević, S.
AU  - Blesić, Suzana
AU  - Stratimirović, Đorđe
PY  - 2002
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1136
AB  - We have analyzed spontaneous discharge dynamics of fasimotor neurons, by applying the so-called detrended fluctuation analysis, which is a modification of the random walk model analysis. Besides, we applied the wavelet analysis method to the same problem. By using these methods we have found evidence for the white noise characteristics of the time series generated by the neuron discharges. We concluded that such a discharge. dynamics represents the requisite noisy component for occurrence of the stochastic resonance mechanism in the neural coordination. of muscle spindles. This finding appears to be very intriguing; since it provided for the first time statistical characterization of the neuronal noise.
PB  - Elsevier, Amsterdam
T2  - Physica A-Statistical Mechanics & its Applications
T1  - Beneficial randomness of signals in a neuronal circuit
VL  - 314
IS  - 1-4
SP  - 43
EP  - 52
DO  - 10.1016/S0378-4371(02)01184-6
ER  - 

@article{
author = "Milošević, S. and Blesić, Suzana and Stratimirović, Đorđe",
year = "2002",
abstract = "We have analyzed spontaneous discharge dynamics of fasimotor neurons, by applying the so-called detrended fluctuation analysis, which is a modification of the random walk model analysis. Besides, we applied the wavelet analysis method to the same problem. By using these methods we have found evidence for the white noise characteristics of the time series generated by the neuron discharges. We concluded that such a discharge. dynamics represents the requisite noisy component for occurrence of the stochastic resonance mechanism in the neural coordination. of muscle spindles. This finding appears to be very intriguing; since it provided for the first time statistical characterization of the neuronal noise.",
publisher = "Elsevier, Amsterdam",
journal = "Physica A-Statistical Mechanics & its Applications",
title = "Beneficial randomness of signals in a neuronal circuit",
volume = "314",
number = "1-4",
pages = "43-52",
doi = "10.1016/S0378-4371(02)01184-6"
}

Milošević, S., Blesić, S.,& Stratimirović, Đ.. (2002). Beneficial randomness of signals in a neuronal circuit. in Physica A-Statistical Mechanics & its Applications
Elsevier, Amsterdam., 314(1-4), 43-52.
https://doi.org/10.1016/S0378-4371(02)01184-6

Milošević S, Blesić S, Stratimirović Đ. Beneficial randomness of signals in a neuronal circuit. in Physica A-Statistical Mechanics & its Applications. 2002;314(1-4):43-52.
doi:10.1016/S0378-4371(02)01184-6 .

Milošević, S., Blesić, Suzana, Stratimirović, Đorđe, "Beneficial randomness of signals in a neuronal circuit" in Physica A-Statistical Mechanics & its Applications, 314, no. 1-4 (2002):43-52,
https://doi.org/10.1016/S0378-4371(02)01184-6 . .

TY  - JOUR
AU  - Stratimirović, Đorđe
AU  - Milošević, S.
AU  - Blesić, Suzana
AU  - Ljubisavljević, Miloš
PY  - 2001
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1132
AB  - We study the interspike intervals (ISI) time series of the spontaneous fusimotor neuron activity by applying the wavelet transform analysis and confirm the existence of the white noise characteristics of the ISI time series. This means that the neuron activity may serve as the requisite noisy component for occurrence of the stochastic resonance mechanism in the neural coordination of muscle spindles. Besides, we apply the multifractal formalism adapted for the wavelet transform time series analysis. Thus, we have established the multifractality of the ISI data and achieved an additional insight into fusimotor discharge dynamics.
PB  - Elsevier, Amsterdam
T2  - Physica A-Statistical Mechanics & its Applications
T1  - Wavelet analysis of discharge dynamics of fusimotor neurons
VL  - 291
IS  - 1-4
SP  - 13
EP  - 23
DO  - 10.1016/S0378-4371(00)00495-7
ER  - 

@article{
author = "Stratimirović, Đorđe and Milošević, S. and Blesić, Suzana and Ljubisavljević, Miloš",
year = "2001",
abstract = "We study the interspike intervals (ISI) time series of the spontaneous fusimotor neuron activity by applying the wavelet transform analysis and confirm the existence of the white noise characteristics of the ISI time series. This means that the neuron activity may serve as the requisite noisy component for occurrence of the stochastic resonance mechanism in the neural coordination of muscle spindles. Besides, we apply the multifractal formalism adapted for the wavelet transform time series analysis. Thus, we have established the multifractality of the ISI data and achieved an additional insight into fusimotor discharge dynamics.",
publisher = "Elsevier, Amsterdam",
journal = "Physica A-Statistical Mechanics & its Applications",
title = "Wavelet analysis of discharge dynamics of fusimotor neurons",
volume = "291",
number = "1-4",
pages = "13-23",
doi = "10.1016/S0378-4371(00)00495-7"
}

Stratimirović, Đ., Milošević, S., Blesić, S.,& Ljubisavljević, M.. (2001). Wavelet analysis of discharge dynamics of fusimotor neurons. in Physica A-Statistical Mechanics & its Applications
Elsevier, Amsterdam., 291(1-4), 13-23.
https://doi.org/10.1016/S0378-4371(00)00495-7

Stratimirović Đ, Milošević S, Blesić S, Ljubisavljević M. Wavelet analysis of discharge dynamics of fusimotor neurons. in Physica A-Statistical Mechanics & its Applications. 2001;291(1-4):13-23.
doi:10.1016/S0378-4371(00)00495-7 .

Stratimirović, Đorđe, Milošević, S., Blesić, Suzana, Ljubisavljević, Miloš, "Wavelet analysis of discharge dynamics of fusimotor neurons" in Physica A-Statistical Mechanics & its Applications, 291, no. 1-4 (2001):13-23,
https://doi.org/10.1016/S0378-4371(00)00495-7 . .