TY  - CONF
AU  - Malović, Miodrag
AU  - Vukanić, Vera
AU  - Jevremović, Darko
AU  - Brajović, Ljiljana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6612
AB  - Pearson's and Spearman's methods are most often used in popular software packages to calculate the correlation coefficient between two variables in natural sciences. The (1) difference between them is that the Pearson's method takes actual numerical values into account whereas the Spearman's operates with their ranks. Ranking is often efficient in dealing with nonlinearities and outliers in the data. However, not both independent (x) and outcome (y) variable have to be suitable for this. We propose not to rank the independent variable in case it comes sine-shaped. Most notable example of such a variable in nature is the temperature. It is sine-shaped due to day-night and summer-winter transitions. It does not contain many outliers, not only due to the shape, but also because it is often sampled at multiple points and averaged (to be linked with a single outcome variable observation). The proposed method is evaluated in simulations and with experimental data obtained in South Adriatic zooplankton research. Practical advices on how to apply it using popular software tools are given.
PB  - Institute of Electrical and Electronics Engineers Inc.
C3  - Proceedings / 10th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), East Sarajevo, 5-8 June 2023
T1  - Mixed Spearman's Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences
DO  - 10.1109/IcETRAN59631.2023.10192143
ER  - 

@conference{
author = "Malović, Miodrag and Vukanić, Vera and Jevremović, Darko and Brajović, Ljiljana",
year = "2023",
abstract = "Pearson's and Spearman's methods are most often used in popular software packages to calculate the correlation coefficient between two variables in natural sciences. The (1) difference between them is that the Pearson's method takes actual numerical values into account whereas the Spearman's operates with their ranks. Ranking is often efficient in dealing with nonlinearities and outliers in the data. However, not both independent (x) and outcome (y) variable have to be suitable for this. We propose not to rank the independent variable in case it comes sine-shaped. Most notable example of such a variable in nature is the temperature. It is sine-shaped due to day-night and summer-winter transitions. It does not contain many outliers, not only due to the shape, but also because it is often sampled at multiple points and averaged (to be linked with a single outcome variable observation). The proposed method is evaluated in simulations and with experimental data obtained in South Adriatic zooplankton research. Practical advices on how to apply it using popular software tools are given.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "Proceedings / 10th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), East Sarajevo, 5-8 June 2023",
title = "Mixed Spearman's Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences",
doi = "10.1109/IcETRAN59631.2023.10192143"
}

Malović, M., Vukanić, V., Jevremović, D.,& Brajović, L.. (2023). Mixed Spearman's Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences. in Proceedings / 10th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), East Sarajevo, 5-8 June 2023
Institute of Electrical and Electronics Engineers Inc...
https://doi.org/10.1109/IcETRAN59631.2023.10192143

Malović M, Vukanić V, Jevremović D, Brajović L. Mixed Spearman's Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences. in Proceedings / 10th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), East Sarajevo, 5-8 June 2023. 2023;.
doi:10.1109/IcETRAN59631.2023.10192143 .

Malović, Miodrag, Vukanić, Vera, Jevremović, Darko, Brajović, Ljiljana, "Mixed Spearman's Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences" in Proceedings / 10th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), East Sarajevo, 5-8 June 2023 (2023),
https://doi.org/10.1109/IcETRAN59631.2023.10192143 . .

TY  - CONF
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana M.
AU  - Šekara, Tomislav
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6024
AB  - Oscilatorna kola su neizbežni deo praktično svih elektronskih uređaja. Najčešće se koriste kola na bazi kvarcnih kristala. Prikazan je proces proizvodnje i princip rada kvarcnih oscilatora, kao i podele kristala i oscilatornih kola. Analizirane su metode kvantitativnog opisivanja greške odnosno nestabilnosti frekvencije. Efekti koji utiču na promene frekvencije su klasifikovani po fizičkom poreklu i vremenskom periodu u kom se dešavaju.
PB  - Društvo za ETRAN
C3  - Zbornik radova LXVI konferencije ETRAN
T1  - Stabilnost frekvencije kvarcnih oscilatora
EP  - 851
SP  - 846
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6024
ER  - 

@conference{
author = "Malović, Miodrag and Brajović, Ljiljana M. and Šekara, Tomislav",
year = "2022",
abstract = "Oscilatorna kola su neizbežni deo praktično svih elektronskih uređaja. Najčešće se koriste kola na bazi kvarcnih kristala. Prikazan je proces proizvodnje i princip rada kvarcnih oscilatora, kao i podele kristala i oscilatornih kola. Analizirane su metode kvantitativnog opisivanja greške odnosno nestabilnosti frekvencije. Efekti koji utiču na promene frekvencije su klasifikovani po fizičkom poreklu i vremenskom periodu u kom se dešavaju.",
publisher = "Društvo za ETRAN",
journal = "Zbornik radova LXVI konferencije ETRAN",
title = "Stabilnost frekvencije kvarcnih oscilatora",
pages = "851-846",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6024"
}

Malović, M., Brajović, L. M.,& Šekara, T.. (2022). Stabilnost frekvencije kvarcnih oscilatora. in Zbornik radova LXVI konferencije ETRAN
Društvo za ETRAN., 846-851.
https://hdl.handle.net/21.15107/rcub_technorep_6024

Malović M, Brajović LM, Šekara T. Stabilnost frekvencije kvarcnih oscilatora. in Zbornik radova LXVI konferencije ETRAN. 2022;:846-851.
https://hdl.handle.net/21.15107/rcub_technorep_6024 .

Malović, Miodrag, Brajović, Ljiljana M., Šekara, Tomislav, "Stabilnost frekvencije kvarcnih oscilatora" in Zbornik radova LXVI konferencije ETRAN (2022):846-851,
https://hdl.handle.net/21.15107/rcub_technorep_6024 .

TY  - CONF
AU  - Martinenko, Anastasija
AU  - Brajović, Ljiljana M.
AU  - Malović, Miodrag
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6004
AB  - In this paper, the possibility of applying Kirchhoff 's scalar approximation model for determining the backscattering coefficient from rough surfaces is investigated. Surfaces of dielectric and metallic materials, which have low roughness, are considered. Based on the roughness parameters and electrical properties of these materials, the backscattering coefficient is modelled as a function of the incident angle of electromagnetic radiation used in laser scanning. It was represented that the type of scattering and the range of backscattering radiation angles, in the case of seemingly smooth surfaces, vary significantly when the roughness parameters change.
AB  - У овом раду испитивана је могућност примене Кирхофовог модела скаларне апроксимације
за одређивање коефицијента повратног расејања од храпавих површина. Разматране су
површине диелектричних и металних материјала које имају малу храпавост. На основу
параметара храпавости и електричних особина тих материјала, моделиран је коефицијент
повратног расејања у зависност од упадног угла електромагнетског зрачења које сe користи
код ласерског скенирања. Показано је да тип расејања и опсег углова повратног расејања, код
привидно глатких површина, вишеструко варирају при промени параметара храпавости.
PB  - Faculty of Architecture, Civil  Engineering and Geodesy, University of Banja Luka
C3  - Proceedings of International conference on Contemporary Theory and Practice in Construction (Stepgrad) XV
T1  - Influence of material surface roughness on backscattering in laser scanning
EP  - 497
SP  - 487
DO  - 10.7251/STP2215487M
ER  - 

@conference{
author = "Martinenko, Anastasija and Brajović, Ljiljana M. and Malović, Miodrag",
year = "2022",
abstract = "In this paper, the possibility of applying Kirchhoff 's scalar approximation model for determining the backscattering coefficient from rough surfaces is investigated. Surfaces of dielectric and metallic materials, which have low roughness, are considered. Based on the roughness parameters and electrical properties of these materials, the backscattering coefficient is modelled as a function of the incident angle of electromagnetic radiation used in laser scanning. It was represented that the type of scattering and the range of backscattering radiation angles, in the case of seemingly smooth surfaces, vary significantly when the roughness parameters change., У овом раду испитивана је могућност примене Кирхофовог модела скаларне апроксимације
за одређивање коефицијента повратног расејања од храпавих површина. Разматране су
површине диелектричних и металних материјала које имају малу храпавост. На основу
параметара храпавости и електричних особина тих материјала, моделиран је коефицијент
повратног расејања у зависност од упадног угла електромагнетског зрачења које сe користи
код ласерског скенирања. Показано је да тип расејања и опсег углова повратног расејања, код
привидно глатких површина, вишеструко варирају при промени параметара храпавости.",
publisher = "Faculty of Architecture, Civil  Engineering and Geodesy, University of Banja Luka",
journal = "Proceedings of International conference on Contemporary Theory and Practice in Construction (Stepgrad) XV",
title = "Influence of material surface roughness on backscattering in laser scanning",
pages = "497-487",
doi = "10.7251/STP2215487M"
}

Martinenko, A., Brajović, L. M.,& Malović, M.. (2022). Influence of material surface roughness on backscattering in laser scanning. in Proceedings of International conference on Contemporary Theory and Practice in Construction (Stepgrad) XV
Faculty of Architecture, Civil  Engineering and Geodesy, University of Banja Luka., 487-497.
https://doi.org/10.7251/STP2215487M

Martinenko A, Brajović LM, Malović M. Influence of material surface roughness on backscattering in laser scanning. in Proceedings of International conference on Contemporary Theory and Practice in Construction (Stepgrad) XV. 2022;:487-497.
doi:10.7251/STP2215487M .

Martinenko, Anastasija, Brajović, Ljiljana M., Malović, Miodrag, "Influence of material surface roughness on backscattering in laser scanning" in Proceedings of International conference on Contemporary Theory and Practice in Construction (Stepgrad) XV (2022):487-497,
https://doi.org/10.7251/STP2215487M . .

TY  - CONF
AU  - Brajović, Ljiljana M.
AU  - Malović, Miodrag
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6000
AB  - Gravity satellite missions measurement data are primarily intended for use in 
the estimation of an accurate model of Earth’s gravity field. The satellites’ almost 
circular orbits with polar or near-polar inclination of the orbital planes, and low 
altitude (between 250 and 500 km), enable almost full coverage of the globe. Orbit 
tracking by precise high orbiting navigation satellite system provides the data about 
three-dimensional satellite position and its deviations. Precision accelerometers on 
the satellites extend the ability to monitor non-gravitational forces acting on them 
continuously. One of these forces, atmospheric drag along orbits, can be derived 
from the orbit track positions and their derivatives, and also from the precise 
accelerometer measurements, so it can be used for atmospheric mass density 
determination. On the other hand, the density of the atmosphere and its main 
constituents can be derived from the spectroscopic measurements. One of the 
examples is thermospheric mass density determination using neutral mass 
spectrometers on earlier satellite missions. Measurement of the Earth’s far 
ultraviolet (FUV) dayglow is used to infer number density profiles of N2, O, and 
O2. Combination of accelerometers measurements and spectroscopic data is the 
foundation of two widely used empirical models of thermospheric mass density. 
This contribution describes the basic measurements on gravity satellite missions 
and atmospheric drag estimation, gives the comparison and combination of 
obtained data with spectrometric measurements of atmospheric density, and lists 
potential improvements using the data from the recently launched satellite gravity 
missions.
PB  - Institute of Physics Belgrade, Serbia
C3  - IV Meeting on Astrophysical Spectroscopy - A&M DATA - Atmosphere, Book of Abstracts and Contributed Papers
T1  - Gravity satellite missions measurement data for atmospheric density estimation
EP  - 69
SP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6000
ER  - 

@conference{
author = "Brajović, Ljiljana M. and Malović, Miodrag",
year = "2022",
abstract = "Gravity satellite missions measurement data are primarily intended for use in 
the estimation of an accurate model of Earth’s gravity field. The satellites’ almost 
circular orbits with polar or near-polar inclination of the orbital planes, and low 
altitude (between 250 and 500 km), enable almost full coverage of the globe. Orbit 
tracking by precise high orbiting navigation satellite system provides the data about 
three-dimensional satellite position and its deviations. Precision accelerometers on 
the satellites extend the ability to monitor non-gravitational forces acting on them 
continuously. One of these forces, atmospheric drag along orbits, can be derived 
from the orbit track positions and their derivatives, and also from the precise 
accelerometer measurements, so it can be used for atmospheric mass density 
determination. On the other hand, the density of the atmosphere and its main 
constituents can be derived from the spectroscopic measurements. One of the 
examples is thermospheric mass density determination using neutral mass 
spectrometers on earlier satellite missions. Measurement of the Earth’s far 
ultraviolet (FUV) dayglow is used to infer number density profiles of N2, O, and 
O2. Combination of accelerometers measurements and spectroscopic data is the 
foundation of two widely used empirical models of thermospheric mass density. 
This contribution describes the basic measurements on gravity satellite missions 
and atmospheric drag estimation, gives the comparison and combination of 
obtained data with spectrometric measurements of atmospheric density, and lists 
potential improvements using the data from the recently launched satellite gravity 
missions.",
publisher = "Institute of Physics Belgrade, Serbia",
journal = "IV Meeting on Astrophysical Spectroscopy - A&M DATA - Atmosphere, Book of Abstracts and Contributed Papers",
title = "Gravity satellite missions measurement data for atmospheric density estimation",
pages = "69-68",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6000"
}

Brajović, L. M.,& Malović, M.. (2022). Gravity satellite missions measurement data for atmospheric density estimation. in IV Meeting on Astrophysical Spectroscopy - A&M DATA - Atmosphere, Book of Abstracts and Contributed Papers
Institute of Physics Belgrade, Serbia., 68-69.
https://hdl.handle.net/21.15107/rcub_technorep_6000

Brajović LM, Malović M. Gravity satellite missions measurement data for atmospheric density estimation. in IV Meeting on Astrophysical Spectroscopy - A&M DATA - Atmosphere, Book of Abstracts and Contributed Papers. 2022;:68-69.
https://hdl.handle.net/21.15107/rcub_technorep_6000 .

Brajović, Ljiljana M., Malović, Miodrag, "Gravity satellite missions measurement data for atmospheric density estimation" in IV Meeting on Astrophysical Spectroscopy - A&M DATA - Atmosphere, Book of Abstracts and Contributed Papers (2022):68-69,
https://hdl.handle.net/21.15107/rcub_technorep_6000 .

TY  - JOUR
AU  - Mirković, Nikola
AU  - Brajović, Ljiljana
AU  - Popović, Zdenka
AU  - Todorović, Goran
AU  - Lazarević, Luka
AU  - Petrović, Miloš
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4908
AB  - The main aim of conducted research is determination of temperature stresses due to the uneven temperature distribution in CWR. This paper presents a methodology for determination of temperature stresses in CWR based on (1) measurement system developed by the authors for measurement of rail surface temperatures, and (2) coupled transient thermal-stress analysis for simulation of rail temperature field and corresponding stresses. The main advantages of the proposed methodology are high sensitivity to the small temperature variations, taking into account the effect of thermal inertia, as well as measurement of single input parameter rail surface temperature. The obtained experimental results showed lower rail temperatures in sleeper zones and rail foot along CWR, which emphasize the effect of heat transfer between rail and sleeper, as well as rail foot and ballast. These effects of heat transfer directly influence the decrease of temperature stresses in the mentioned zones of CWR. The maximum values of simulated temperature stresses are up to 16% less in the centre of gravity of railhead, up to 9.8% less in the centre of gravity of rail foot, and up to 0.2% less in the centre of gravity of rail web, compared to the common engineering calculation. In addition, the maximum value of simulated temperature force, based on temperature stresses in the rail cross-section, was up to 5.3% less than the value obtained in the common engineering calculation.
T2  - Construction and Building Materials
T1  - Determination of temperature stresses in CWR based on measured rail surface temperatures
VL  - 284
DO  - 10.1016/j.conbuildmat.2021.122713
ER  - 

@article{
author = "Mirković, Nikola and Brajović, Ljiljana and Popović, Zdenka and Todorović, Goran and Lazarević, Luka and Petrović, Miloš",
year = "2021",
abstract = "The main aim of conducted research is determination of temperature stresses due to the uneven temperature distribution in CWR. This paper presents a methodology for determination of temperature stresses in CWR based on (1) measurement system developed by the authors for measurement of rail surface temperatures, and (2) coupled transient thermal-stress analysis for simulation of rail temperature field and corresponding stresses. The main advantages of the proposed methodology are high sensitivity to the small temperature variations, taking into account the effect of thermal inertia, as well as measurement of single input parameter rail surface temperature. The obtained experimental results showed lower rail temperatures in sleeper zones and rail foot along CWR, which emphasize the effect of heat transfer between rail and sleeper, as well as rail foot and ballast. These effects of heat transfer directly influence the decrease of temperature stresses in the mentioned zones of CWR. The maximum values of simulated temperature stresses are up to 16% less in the centre of gravity of railhead, up to 9.8% less in the centre of gravity of rail foot, and up to 0.2% less in the centre of gravity of rail web, compared to the common engineering calculation. In addition, the maximum value of simulated temperature force, based on temperature stresses in the rail cross-section, was up to 5.3% less than the value obtained in the common engineering calculation.",
journal = "Construction and Building Materials",
title = "Determination of temperature stresses in CWR based on measured rail surface temperatures",
volume = "284",
doi = "10.1016/j.conbuildmat.2021.122713"
}

Mirković, N., Brajović, L., Popović, Z., Todorović, G., Lazarević, L.,& Petrović, M.. (2021). Determination of temperature stresses in CWR based on measured rail surface temperatures. in Construction and Building Materials, 284.
https://doi.org/10.1016/j.conbuildmat.2021.122713

Mirković N, Brajović L, Popović Z, Todorović G, Lazarević L, Petrović M. Determination of temperature stresses in CWR based on measured rail surface temperatures. in Construction and Building Materials. 2021;284.
doi:10.1016/j.conbuildmat.2021.122713 .

Mirković, Nikola, Brajović, Ljiljana, Popović, Zdenka, Todorović, Goran, Lazarević, Luka, Petrović, Miloš, "Determination of temperature stresses in CWR based on measured rail surface temperatures" in Construction and Building Materials, 284 (2021),
https://doi.org/10.1016/j.conbuildmat.2021.122713 . .

TY  - JOUR
AU  - Stojanović, Dušica
AU  - Brajović, Ljiljana
AU  - Obradović, Vera
AU  - Mijailović, Daniel
AU  - Dramlić, Dragan
AU  - Kojović, Aleksandar
AU  - Uskoković, Petar
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4454
AB  - The composite nanofibers were used as reinforcement in acrylic polymer for the overall enhancement of thermo-mechanical properties, adhesion between fibers and matrix, and fracture toughness of the final nanocomposite since acrylic materials lack of this feature. So, a good balance between hardness/toughness and transparency is obtained with the addition of poly (vinyl butyral) (PVB) and titania (TiO2) nanofibers simultaneously and controlling their contents. Specifically, when compared to that of pure acrylic polymer, the fracture toughness of the PMMA nanocomposite apparently increased 55% with the addition of 3 wt.% titania nanoparticles, while the produced nanocomposite maintained high transmittance above 75-80% in the visible domain. The transmission spectrum modelling of the reinforced fiber materials and hybrid acrylic composites using Mie scattering theory for different particle sizes and particle content is presented. The calculated transmission coefficients versus wavelength are compared with the experimental ones.
PB  - Elsevier B.V.
T2  - Progress in Organic Coatings
T1  - Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance
SP  - 105437
VL  - 139
DO  - 10.1016/j.porgcoat.2019.105437
ER  - 

@article{
author = "Stojanović, Dušica and Brajović, Ljiljana and Obradović, Vera and Mijailović, Daniel and Dramlić, Dragan and Kojović, Aleksandar and Uskoković, Petar",
year = "2020",
abstract = "The composite nanofibers were used as reinforcement in acrylic polymer for the overall enhancement of thermo-mechanical properties, adhesion between fibers and matrix, and fracture toughness of the final nanocomposite since acrylic materials lack of this feature. So, a good balance between hardness/toughness and transparency is obtained with the addition of poly (vinyl butyral) (PVB) and titania (TiO2) nanofibers simultaneously and controlling their contents. Specifically, when compared to that of pure acrylic polymer, the fracture toughness of the PMMA nanocomposite apparently increased 55% with the addition of 3 wt.% titania nanoparticles, while the produced nanocomposite maintained high transmittance above 75-80% in the visible domain. The transmission spectrum modelling of the reinforced fiber materials and hybrid acrylic composites using Mie scattering theory for different particle sizes and particle content is presented. The calculated transmission coefficients versus wavelength are compared with the experimental ones.",
publisher = "Elsevier B.V.",
journal = "Progress in Organic Coatings",
title = "Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance",
pages = "105437",
volume = "139",
doi = "10.1016/j.porgcoat.2019.105437"
}

Stojanović, D., Brajović, L., Obradović, V., Mijailović, D., Dramlić, D., Kojović, A.,& Uskoković, P.. (2020). Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance. in Progress in Organic Coatings
Elsevier B.V.., 139, 105437.
https://doi.org/10.1016/j.porgcoat.2019.105437

Stojanović D, Brajović L, Obradović V, Mijailović D, Dramlić D, Kojović A, Uskoković P. Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance. in Progress in Organic Coatings. 2020;139:105437.
doi:10.1016/j.porgcoat.2019.105437 .

Stojanović, Dušica, Brajović, Ljiljana, Obradović, Vera, Mijailović, Daniel, Dramlić, Dragan, Kojović, Aleksandar, Uskoković, Petar, "Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance" in Progress in Organic Coatings, 139 (2020):105437,
https://doi.org/10.1016/j.porgcoat.2019.105437 . .

TY  - JOUR
AU  - Mirković, N.
AU  - Brajović, Ljiljana
AU  - Malović, Miodrag
AU  - Vnenk, P.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4565
AB  - Continuously welded rails are a part of the track structure since the 1950s. Total stresses in continuously welded rails include residual stresses generated during the manufacturing process as well as the service life of rails. The control of rail stresses is very important for traffic safety. Measurement methods for residual stress in rails are presented in this paper. Since destructive measurement methods are unsuitable for use in the railway track, the modern non-destructive methods were particularly presented and discussed. The advantages and disadvantages of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are particularly explained and considered.
PB  - 20th International Scientific Conference on Energy Management of Municipal Facilities and Sustainable Energy Technologies, EMMFT 2018
T2  - Advances in Intelligent Systems and Computing
T1  - Measurement methods for residual stresses in CWR
EP  - 355
SP  - 346
VL  - 982
DO  - 10.1007/978-3-030-19756-8_32
ER  - 

@article{
author = "Mirković, N. and Brajović, Ljiljana and Malović, Miodrag and Vnenk, P.",
year = "2020",
abstract = "Continuously welded rails are a part of the track structure since the 1950s. Total stresses in continuously welded rails include residual stresses generated during the manufacturing process as well as the service life of rails. The control of rail stresses is very important for traffic safety. Measurement methods for residual stress in rails are presented in this paper. Since destructive measurement methods are unsuitable for use in the railway track, the modern non-destructive methods were particularly presented and discussed. The advantages and disadvantages of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are particularly explained and considered.",
publisher = "20th International Scientific Conference on Energy Management of Municipal Facilities and Sustainable Energy Technologies, EMMFT 2018",
journal = "Advances in Intelligent Systems and Computing",
title = "Measurement methods for residual stresses in CWR",
pages = "355-346",
volume = "982",
doi = "10.1007/978-3-030-19756-8_32"
}

Mirković, N., Brajović, L., Malović, M.,& Vnenk, P.. (2020). Measurement methods for residual stresses in CWR. in Advances in Intelligent Systems and Computing
20th International Scientific Conference on Energy Management of Municipal Facilities and Sustainable Energy Technologies, EMMFT 2018., 982, 346-355.
https://doi.org/10.1007/978-3-030-19756-8_32

Mirković N, Brajović L, Malović M, Vnenk P. Measurement methods for residual stresses in CWR. in Advances in Intelligent Systems and Computing. 2020;982:346-355.
doi:10.1007/978-3-030-19756-8_32 .

Mirković, N., Brajović, Ljiljana, Malović, Miodrag, Vnenk, P., "Measurement methods for residual stresses in CWR" in Advances in Intelligent Systems and Computing, 982 (2020):346-355,
https://doi.org/10.1007/978-3-030-19756-8_32 . .

TY  - CONF
AU  - Mirković, Nikola
AU  - Brajović, Ljiljana
AU  - Malović, Miodrag
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3764
AB  - The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages.
PB  - Faculty of Mechanical Engineering, Niš
C3  - Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš
T1  - Methods for determination of residual stress in rail
EP  - 116
SP  - 113
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3764
ER  - 

@conference{
author = "Mirković, Nikola and Brajović, Ljiljana and Malović, Miodrag",
year = "2018",
abstract = "The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages.",
publisher = "Faculty of Mechanical Engineering, Niš",
journal = "Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš",
title = "Methods for determination of residual stress in rail",
pages = "116-113",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3764"
}

Mirković, N., Brajović, L.,& Malović, M.. (2018). Methods for determination of residual stress in rail. in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš
Faculty of Mechanical Engineering, Niš., 113-116.
https://hdl.handle.net/21.15107/rcub_technorep_3764

Mirković N, Brajović L, Malović M. Methods for determination of residual stress in rail. in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš. 2018;:113-116.
https://hdl.handle.net/21.15107/rcub_technorep_3764 .

Mirković, Nikola, Brajović, Ljiljana, Malović, Miodrag, "Methods for determination of residual stress in rail" in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš (2018):113-116,
https://hdl.handle.net/21.15107/rcub_technorep_3764 .

TY  - CONF
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana M.
AU  - Šekara, Tomislav
AU  - Kočinac, Saša
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6026
AB  - U radu je opisano ispitivanje sinhronizovanosti podataka koji su uzorkovani putem odvojenih MEMS akcelerometara. Korišćeni su bežični senzorski uređaji razvijeni na Građevinskom fakultetu u Beogradu, namenjeni merenju vibracija građevinskih objekata. Poznato je da ovi uređaji mogu da postignu tačnost vremenskog označavanja uzoraka reda veličine10 μs za kraće merne periode (ispodminuta). Ovo znači da je greška koju elektronika unosi zanemarljiva za merenje mehaničkih veličina sa frekvencijom uzorkovanja reda veličine kHz. Analizirane su varijacije u fazi izlaznih signala različitih senzora prilikom identične pobude. Problem je ograničena mogućnost ostvarivanja identične mehaničke pobude na različitim mestima u prostoru, te je bez savršene opreme nemoguće razgraničiti koliki deo greške potiče od nepoklapanja ulaznih signala, a koliki od nesavršenosti senzorskog aparata. Pokazano je da je moguće dobiti standardnu devijaciju vremenskog ofseta između snimljenih signala reda veličine milisekunde.
PB  - Društvo za ETRAN
C3  - Zbornik radova LXI konferencije ETRAN
T1  - Ispitivanje vremenske sinhronizovanosti mernih signala snimljenih MEMS akcelerometrima
SP  - ML 1.6
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6026
ER  - 

@conference{
author = "Malović, Miodrag and Brajović, Ljiljana M. and Šekara, Tomislav and Kočinac, Saša",
year = "2017",
abstract = "U radu je opisano ispitivanje sinhronizovanosti podataka koji su uzorkovani putem odvojenih MEMS akcelerometara. Korišćeni su bežični senzorski uređaji razvijeni na Građevinskom fakultetu u Beogradu, namenjeni merenju vibracija građevinskih objekata. Poznato je da ovi uređaji mogu da postignu tačnost vremenskog označavanja uzoraka reda veličine10 μs za kraće merne periode (ispodminuta). Ovo znači da je greška koju elektronika unosi zanemarljiva za merenje mehaničkih veličina sa frekvencijom uzorkovanja reda veličine kHz. Analizirane su varijacije u fazi izlaznih signala različitih senzora prilikom identične pobude. Problem je ograničena mogućnost ostvarivanja identične mehaničke pobude na različitim mestima u prostoru, te je bez savršene opreme nemoguće razgraničiti koliki deo greške potiče od nepoklapanja ulaznih signala, a koliki od nesavršenosti senzorskog aparata. Pokazano je da je moguće dobiti standardnu devijaciju vremenskog ofseta između snimljenih signala reda veličine milisekunde.",
publisher = "Društvo za ETRAN",
journal = "Zbornik radova LXI konferencije ETRAN",
title = "Ispitivanje vremenske sinhronizovanosti mernih signala snimljenih MEMS akcelerometrima",
pages = "ML 1.6",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6026"
}

Malović, M., Brajović, L. M., Šekara, T.,& Kočinac, S.. (2017). Ispitivanje vremenske sinhronizovanosti mernih signala snimljenih MEMS akcelerometrima. in Zbornik radova LXI konferencije ETRAN
Društvo za ETRAN., ML 1.6.
https://hdl.handle.net/21.15107/rcub_technorep_6026

Malović M, Brajović LM, Šekara T, Kočinac S. Ispitivanje vremenske sinhronizovanosti mernih signala snimljenih MEMS akcelerometrima. in Zbornik radova LXI konferencije ETRAN. 2017;:ML 1.6.
https://hdl.handle.net/21.15107/rcub_technorep_6026 .

Malović, Miodrag, Brajović, Ljiljana M., Šekara, Tomislav, Kočinac, Saša, "Ispitivanje vremenske sinhronizovanosti mernih signala snimljenih MEMS akcelerometrima" in Zbornik radova LXI konferencije ETRAN (2017):ML 1.6,
https://hdl.handle.net/21.15107/rcub_technorep_6026 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Šekara, Tomislav
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3511
AB  - Cross-axial or transverse sensitivity of an accelerometer can be compensated by digital processing of the output signal. To perform this, it is necessary to determine coefficients that describe a sensor's response to excitation experimentally. Many procedures advised by standards and scientific papers use expensive equipment which is not available in every laboratory. Therefore, a simple method is proposed, namely a variation of the static tilt test, requiring no other measuring equipment than the sensor itself and a flat surface. Results vary depending on sensor surface and housing quality, but it has been shown that cross sensitivity effects can be reduced from several percent usually associated with commercial three-axial MEMS accelerometers down to 1% or less.
AB  - Kros- aksijalna, odnosno poprečna osetljivost akcelerometra može biti kompenzovana digitalnim procesiranjem izlaznog signala. Da bi se to izvelo, potrebno je eksperimentalno odrediti koeficijente koji opisuju odgovor senzora na pobudu. Mnoge procedure koje se odnose na to, a koje su preporučene standardima i naučnim člancima, koriste skupu opremu koja nije dostupna u svakoj laboratoriji. Zato je predložen jednostavan alternativni metod, varijacija statičkog tilt-testa, koji ne zahteva nikakvu drugu mernu opremu osim senzora i ravne površine. Rezultati variraju u zavisnosti od kvaliteta površine i kućišta senzora, ali je pokazano da se efekti poprečne osetljivosti mogu smanjiti bar nekoliko puta, te da se tipična poprečna osetljivost komercijalnih troosnih MEMS akcelerometara od nekoliko procenata može lako svesti ispod 1%.
PB  - University of Defence in Belgrade
T2  - Vojnotehnički glasnik
T1  - Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation
T1  - Kompensacija poperečnoj čuvstvitel'nosti MËMS akselerometrov s pomošč'ju testirovanija statičnogo ugla naklona, provedennogo v 24-eh pozicijah
T1  - Kompenzacija poprečne osetljivosti MEMS akcelerometra metodom tilt-testa u 24 pozicije
EP  - 661
IS  - 3
SP  - 651
VL  - 65
DO  - 10.5937/vojtehg65-13137
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Šekara, Tomislav",
year = "2017",
abstract = "Cross-axial or transverse sensitivity of an accelerometer can be compensated by digital processing of the output signal. To perform this, it is necessary to determine coefficients that describe a sensor's response to excitation experimentally. Many procedures advised by standards and scientific papers use expensive equipment which is not available in every laboratory. Therefore, a simple method is proposed, namely a variation of the static tilt test, requiring no other measuring equipment than the sensor itself and a flat surface. Results vary depending on sensor surface and housing quality, but it has been shown that cross sensitivity effects can be reduced from several percent usually associated with commercial three-axial MEMS accelerometers down to 1% or less., Kros- aksijalna, odnosno poprečna osetljivost akcelerometra može biti kompenzovana digitalnim procesiranjem izlaznog signala. Da bi se to izvelo, potrebno je eksperimentalno odrediti koeficijente koji opisuju odgovor senzora na pobudu. Mnoge procedure koje se odnose na to, a koje su preporučene standardima i naučnim člancima, koriste skupu opremu koja nije dostupna u svakoj laboratoriji. Zato je predložen jednostavan alternativni metod, varijacija statičkog tilt-testa, koji ne zahteva nikakvu drugu mernu opremu osim senzora i ravne površine. Rezultati variraju u zavisnosti od kvaliteta površine i kućišta senzora, ali je pokazano da se efekti poprečne osetljivosti mogu smanjiti bar nekoliko puta, te da se tipična poprečna osetljivost komercijalnih troosnih MEMS akcelerometara od nekoliko procenata može lako svesti ispod 1%.",
publisher = "University of Defence in Belgrade",
journal = "Vojnotehnički glasnik",
title = "Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation, Kompensacija poperečnoj čuvstvitel'nosti MËMS akselerometrov s pomošč'ju testirovanija statičnogo ugla naklona, provedennogo v 24-eh pozicijah, Kompenzacija poprečne osetljivosti MEMS akcelerometra metodom tilt-testa u 24 pozicije",
pages = "661-651",
number = "3",
volume = "65",
doi = "10.5937/vojtehg65-13137"
}

Malović, M., Brajović, L.,& Šekara, T.. (2017). Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation. in Vojnotehnički glasnik
University of Defence in Belgrade., 65(3), 651-661.
https://doi.org/10.5937/vojtehg65-13137

Malović M, Brajović L, Šekara T. Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation. in Vojnotehnički glasnik. 2017;65(3):651-661.
doi:10.5937/vojtehg65-13137 .

Malović, Miodrag, Brajović, Ljiljana, Šekara, Tomislav, "Twenty-four position tilt test for accelerometer cross-axial sensitivity compensation" in Vojnotehnički glasnik, 65, no. 3 (2017):651-661,
https://doi.org/10.5937/vojtehg65-13137 . .

TY  - JOUR
AU  - Brajović, Ljiljana
AU  - Stojanović, Dušica
AU  - Mihailović, Peđa
AU  - Marković, Smilja
AU  - Romčević, Maja J.
AU  - Mitrić, Miodrag
AU  - Lazović, Vladimir M.
AU  - Dramlić, Dragan
AU  - Petricević, Slobodan
AU  - Romčević, Nebojša Ž.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3669
AB  - Bismuth germanium oxide Bi12GeO20 (BGO) has very interesting electrical, optical and magnetic properties. In order to make devices based on this material more flexible, its powder was used for preparing polymer composites. This study reports investigation of the effects of using different solvents and polymers in preparation of BGO composite on the microstructural and optical behaviour of the resulting material. Preparation of such composites by a solution casting method is described. Poly (methyl methacrylate) (PMMA) and polystyrene (PS)) were used as matrix materials and acetone and chloroform as solvents. Their microstructure and the quality of BGO dispersion and deaggregation in polymer matrix were analyzed by SEM, Raman, XRD and optical spectroscopy. The influence of particle size distribution, their shapes, and concentration on the optical transmission is calculated based on Mie scattering theory and discussed, too.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Preparation and characterization of bismuth germanium oxide (BGO) polymer composites
EP  - 849
SP  - 841
VL  - 695
DO  - 10.1016/j.jallcom.2016.10.140
ER  - 

@article{
author = "Brajović, Ljiljana and Stojanović, Dušica and Mihailović, Peđa and Marković, Smilja and Romčević, Maja J. and Mitrić, Miodrag and Lazović, Vladimir M. and Dramlić, Dragan and Petricević, Slobodan and Romčević, Nebojša Ž.",
year = "2017",
abstract = "Bismuth germanium oxide Bi12GeO20 (BGO) has very interesting electrical, optical and magnetic properties. In order to make devices based on this material more flexible, its powder was used for preparing polymer composites. This study reports investigation of the effects of using different solvents and polymers in preparation of BGO composite on the microstructural and optical behaviour of the resulting material. Preparation of such composites by a solution casting method is described. Poly (methyl methacrylate) (PMMA) and polystyrene (PS)) were used as matrix materials and acetone and chloroform as solvents. Their microstructure and the quality of BGO dispersion and deaggregation in polymer matrix were analyzed by SEM, Raman, XRD and optical spectroscopy. The influence of particle size distribution, their shapes, and concentration on the optical transmission is calculated based on Mie scattering theory and discussed, too.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Preparation and characterization of bismuth germanium oxide (BGO) polymer composites",
pages = "849-841",
volume = "695",
doi = "10.1016/j.jallcom.2016.10.140"
}

Brajović, L., Stojanović, D., Mihailović, P., Marković, S., Romčević, M. J., Mitrić, M., Lazović, V. M., Dramlić, D., Petricević, S.,& Romčević, N. Ž.. (2017). Preparation and characterization of bismuth germanium oxide (BGO) polymer composites. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 695, 841-849.
https://doi.org/10.1016/j.jallcom.2016.10.140

Brajović L, Stojanović D, Mihailović P, Marković S, Romčević MJ, Mitrić M, Lazović VM, Dramlić D, Petricević S, Romčević NŽ. Preparation and characterization of bismuth germanium oxide (BGO) polymer composites. in Journal of Alloys and Compounds. 2017;695:841-849.
doi:10.1016/j.jallcom.2016.10.140 .

Brajović, Ljiljana, Stojanović, Dušica, Mihailović, Peđa, Marković, Smilja, Romčević, Maja J., Mitrić, Miodrag, Lazović, Vladimir M., Dramlić, Dragan, Petricević, Slobodan, Romčević, Nebojša Ž., "Preparation and characterization of bismuth germanium oxide (BGO) polymer composites" in Journal of Alloys and Compounds, 695 (2017):841-849,
https://doi.org/10.1016/j.jallcom.2016.10.140 . .

TY  - JOUR
AU  - Petrović, Miloš
AU  - Mihailović, Peđa
AU  - Brajović, Ljiljana
AU  - Petricević, Slobodan
AU  - Živković, Irena
AU  - Kojović, Aleksandar
AU  - Radojević, Vesna
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3471
AB  - In this paper, the use of intrinsic intensity fiber-optic sensors for structural health monitoring was investigated. Polyethylene-based composite samples with glass mat reinforcement and embedded telecommunication fibers were subjected to impact using high-speed puncture impact tester as a calibration device. Transfer function of the sensor was generated by linking the light intensity modulation depth with the impact force and the impact point to fiber distance. Conditions for transfer function validity were presented. To detect any possible dangerous impact, a net of crossed fibers was proposed and the net spacing for the given material was calculated. Appropriate non-damaging calibration procedure was proposed, as well as the algorithm for locating the impact point. The method for calculating the impact force, the projectile momentum change, and the place of impact was verified by consecutive strikes on the previously calibrated sample. The sensor can also provide information on the time of the impact and an alarm signal if the force exceeds the damaging threshold force.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester
EP  - 3053
IS  - 9
SP  - 3047
VL  - 16
DO  - 10.1109/JSEN.2016.2524045
ER  - 

@article{
author = "Petrović, Miloš and Mihailović, Peđa and Brajović, Ljiljana and Petricević, Slobodan and Živković, Irena and Kojović, Aleksandar and Radojević, Vesna",
year = "2016",
abstract = "In this paper, the use of intrinsic intensity fiber-optic sensors for structural health monitoring was investigated. Polyethylene-based composite samples with glass mat reinforcement and embedded telecommunication fibers were subjected to impact using high-speed puncture impact tester as a calibration device. Transfer function of the sensor was generated by linking the light intensity modulation depth with the impact force and the impact point to fiber distance. Conditions for transfer function validity were presented. To detect any possible dangerous impact, a net of crossed fibers was proposed and the net spacing for the given material was calculated. Appropriate non-damaging calibration procedure was proposed, as well as the algorithm for locating the impact point. The method for calculating the impact force, the projectile momentum change, and the place of impact was verified by consecutive strikes on the previously calibrated sample. The sensor can also provide information on the time of the impact and an alarm signal if the force exceeds the damaging threshold force.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester",
pages = "3053-3047",
number = "9",
volume = "16",
doi = "10.1109/JSEN.2016.2524045"
}

Petrović, M., Mihailović, P., Brajović, L., Petricević, S., Živković, I., Kojović, A.,& Radojević, V.. (2016). Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 16(9), 3047-3053.
https://doi.org/10.1109/JSEN.2016.2524045

Petrović M, Mihailović P, Brajović L, Petricević S, Živković I, Kojović A, Radojević V. Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester. in IEEE Sensors Journal. 2016;16(9):3047-3053.
doi:10.1109/JSEN.2016.2524045 .

Petrović, Miloš, Mihailović, Peđa, Brajović, Ljiljana, Petricević, Slobodan, Živković, Irena, Kojović, Aleksandar, Radojević, Vesna, "Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester" in IEEE Sensors Journal, 16, no. 9 (2016):3047-3053,
https://doi.org/10.1109/JSEN.2016.2524045 . .

TY  - CONF
AU  - Josipović, Jovana
AU  - Brajović, Ljiljana M.
AU  - Kuzmanović, Vladan
AU  - Milovanović, Bojan
AU  - Todorović, Goran
AU  - Malović, Miodrag
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6037
AB  - Razvojem i modernizacijom oskultacionih instrumenata postiže se veća tačnost i ponovljivost merenja, ali i automatsko očitavanje i akvizicija mernih podataka, a samim tim i praćenje stanja objekata u realnom vremenu. Senzori na bazi vibrirajuće žice, pijezometri, se po pravilu koriste za primene gde se očekuje dugoročno praćenje stanja objekata, na primer kod tunela i brana. Pouzdanost ovih instrumenata je od najvećeg značaja s obzirom da se oni ugrađuju u beton brane i teško se mogu pomerati sa mernih mesta radi ponovne kalibracije. Ovaj rad opisuje princip rada pijezometara kao i faktore koji utiču na njihovu dugoročnu pouzdanost. Na brani „Bajina Bašta“ je postavljen veliki broj ovih senzora. Na osnovu dobijenih mernih podataka su analizirane njihove merne karakteristike tokom vremena. Korišćeno je više serija podataka osmatranja za duži vremenski period. Ovi rezultati omogućavaju ocenu efikasnosti primenjenih antifiltracionih mera, što je naročito značajno za ocenu opšte stabilnosti brane.
PB  - Institut za istraživanja i projektovanja u privredi
PB  - Univerzitet u Beogradu, Mašinski fakultet
PB  - Društvo održavalaca tehničkih sistema
C3  - Zbornik radova XLI Naučno-stručnog skupa Održavanje mašina i opreme (OMO)
T1  - Pouzdanost piezometara na brani »Bajina Bašta« na osnovu podataka osmatranja
EP  - 69
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6037
ER  - 

@conference{
author = "Josipović, Jovana and Brajović, Ljiljana M. and Kuzmanović, Vladan and Milovanović, Bojan and Todorović, Goran and Malović, Miodrag",
year = "2016",
abstract = "Razvojem i modernizacijom oskultacionih instrumenata postiže se veća tačnost i ponovljivost merenja, ali i automatsko očitavanje i akvizicija mernih podataka, a samim tim i praćenje stanja objekata u realnom vremenu. Senzori na bazi vibrirajuće žice, pijezometri, se po pravilu koriste za primene gde se očekuje dugoročno praćenje stanja objekata, na primer kod tunela i brana. Pouzdanost ovih instrumenata je od najvećeg značaja s obzirom da se oni ugrađuju u beton brane i teško se mogu pomerati sa mernih mesta radi ponovne kalibracije. Ovaj rad opisuje princip rada pijezometara kao i faktore koji utiču na njihovu dugoročnu pouzdanost. Na brani „Bajina Bašta“ je postavljen veliki broj ovih senzora. Na osnovu dobijenih mernih podataka su analizirane njihove merne karakteristike tokom vremena. Korišćeno je više serija podataka osmatranja za duži vremenski period. Ovi rezultati omogućavaju ocenu efikasnosti primenjenih antifiltracionih mera, što je naročito značajno za ocenu opšte stabilnosti brane.",
publisher = "Institut za istraživanja i projektovanja u privredi, Univerzitet u Beogradu, Mašinski fakultet, Društvo održavalaca tehničkih sistema",
journal = "Zbornik radova XLI Naučno-stručnog skupa Održavanje mašina i opreme (OMO)",
title = "Pouzdanost piezometara na brani »Bajina Bašta« na osnovu podataka osmatranja",
pages = "69-60",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6037"
}

Josipović, J., Brajović, L. M., Kuzmanović, V., Milovanović, B., Todorović, G.,& Malović, M.. (2016). Pouzdanost piezometara na brani »Bajina Bašta« na osnovu podataka osmatranja. in Zbornik radova XLI Naučno-stručnog skupa Održavanje mašina i opreme (OMO)
Institut za istraživanja i projektovanja u privredi., 60-69.
https://hdl.handle.net/21.15107/rcub_technorep_6037

Josipović J, Brajović LM, Kuzmanović V, Milovanović B, Todorović G, Malović M. Pouzdanost piezometara na brani »Bajina Bašta« na osnovu podataka osmatranja. in Zbornik radova XLI Naučno-stručnog skupa Održavanje mašina i opreme (OMO). 2016;:60-69.
https://hdl.handle.net/21.15107/rcub_technorep_6037 .

Josipović, Jovana, Brajović, Ljiljana M., Kuzmanović, Vladan, Milovanović, Bojan, Todorović, Goran, Malović, Miodrag, "Pouzdanost piezometara na brani »Bajina Bašta« na osnovu podataka osmatranja" in Zbornik radova XLI Naučno-stručnog skupa Održavanje mašina i opreme (OMO) (2016):60-69,
https://hdl.handle.net/21.15107/rcub_technorep_6037 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Šekara, Tomislav
AU  - Mišković, Zoran
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3287
AB  - A lossless compression scheme for the data acquired from three-axial microelectromechanical (MEMS) accelerometer is presented. Time delay estimation (TDE) was applied in conjunction with differential pulse code modulation (DPCM) as the preprocessor to entropy coding, to perform lossless compression on an embedded sensor device with limited memory and speed in real time. The essence of this method is to check if the signal exhibits certain level of periodicity, and code the differences between samples one signal period apart if it does. Limited choice of feasible mathematical operations was an important constraint implied by the architecture of the embedded sensor device. Algorithm execution time was improved by programming in assembler and avoiding unnecessary operations. Experiments have confirmed that considerable compression ratio gains can be achieved if the signal is quasiperiodic.
PB  - Kaunas Univ Technology, Kaunas
T2  - Elektronika Ir Elektrotechnika
T1  - Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor
EP  - 26
IS  - 2
SP  - 21
VL  - 22
DO  - 10.5755/j01.eie.22.2.7646
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Šekara, Tomislav and Mišković, Zoran",
year = "2016",
abstract = "A lossless compression scheme for the data acquired from three-axial microelectromechanical (MEMS) accelerometer is presented. Time delay estimation (TDE) was applied in conjunction with differential pulse code modulation (DPCM) as the preprocessor to entropy coding, to perform lossless compression on an embedded sensor device with limited memory and speed in real time. The essence of this method is to check if the signal exhibits certain level of periodicity, and code the differences between samples one signal period apart if it does. Limited choice of feasible mathematical operations was an important constraint implied by the architecture of the embedded sensor device. Algorithm execution time was improved by programming in assembler and avoiding unnecessary operations. Experiments have confirmed that considerable compression ratio gains can be achieved if the signal is quasiperiodic.",
publisher = "Kaunas Univ Technology, Kaunas",
journal = "Elektronika Ir Elektrotechnika",
title = "Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor",
pages = "26-21",
number = "2",
volume = "22",
doi = "10.5755/j01.eie.22.2.7646"
}

Malović, M., Brajović, L., Šekara, T.,& Mišković, Z.. (2016). Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor. in Elektronika Ir Elektrotechnika
Kaunas Univ Technology, Kaunas., 22(2), 21-26.
https://doi.org/10.5755/j01.eie.22.2.7646

Malović M, Brajović L, Šekara T, Mišković Z. Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor. in Elektronika Ir Elektrotechnika. 2016;22(2):21-26.
doi:10.5755/j01.eie.22.2.7646 .

Malović, Miodrag, Brajović, Ljiljana, Šekara, Tomislav, Mišković, Zoran, "Lossless Compression of Vibration Signals on an Embedded Device Using a TDE Based Predictor" in Elektronika Ir Elektrotechnika, 22, no. 2 (2016):21-26,
https://doi.org/10.5755/j01.eie.22.2.7646 . .

TY  - CONF
AU  - Naod, S.
AU  - Brajović, Ljiljana
AU  - Odalović, Oleg
AU  - Malović, Miodrag
AU  - Todorović, Goran
AU  - Gospavić, Radovan
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2869
PB  - Građevinski fakultet, Univerzitet u Beogradu, Beograd
C3  - Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine
T1  - Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2869
ER  - 

@conference{
author = "Naod, S. and Brajović, Ljiljana and Odalović, Oleg and Malović, Miodrag and Todorović, Goran and Gospavić, Radovan",
year = "2015",
publisher = "Građevinski fakultet, Univerzitet u Beogradu, Beograd",
journal = "Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine",
title = "Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2869"
}

Naod, S., Brajović, L., Odalović, O., Malović, M., Todorović, G.,& Gospavić, R.. (2015). Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike. in Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine
Građevinski fakultet, Univerzitet u Beogradu, Beograd..
https://hdl.handle.net/21.15107/rcub_technorep_2869

Naod S, Brajović L, Odalović O, Malović M, Todorović G, Gospavić R. Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike. in Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine. 2015;.
https://hdl.handle.net/21.15107/rcub_technorep_2869 .

Naod, S., Brajović, Ljiljana, Odalović, Oleg, Malović, Miodrag, Todorović, Goran, Gospavić, Radovan, "Gravitacioni gradiometri koji se koriste u satelitskim misijama - princip rada i merne karakteristike" in Zbornik radova / Kongres metrologa 2015, Zlatibor, 12.-15. oktobar 2015. godine (2015),
https://hdl.handle.net/21.15107/rcub_technorep_2869 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Mišković, Zoran
AU  - Šekara, Tomislav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3019
AB  - An original wireless sensor network for vibration measurements was designed. Its primary purpose is modal analysis of vibrations of large structures. A number of experiments have been performed to evaluate the system, with special emphasis on the influence of different effects on simultaneity of data acquired from remote nodes, which is essential for modal analysis. One of the issues is that quartz crystal oscillators, which provide time reading on the devices, are optimized for use in the room temperature and exhibit significant frequency variations if operated outside the 20-30 degrees C range. Although much research was performed to optimize algorithms of synchronization in wireless networks, the subject of temperature fluctuations was not investigated and discussed in proportion to its significance. This paper describes methods used to evaluate data simultaneity and some algorithms suitable for its improvement in small to intermediate size ad-hoc wireless sensor networks exposed to varying temperatures often present in on-site civil engineering measurements.
PB  - Polska Akad Nauk, Polish Acad Sciences, Warszawa
T2  - Metrology and Measurement Systems
T1  - Simultaneity analysis in a wireless sensor network
EP  - 288
IS  - 2
SP  - 275
VL  - 22
DO  - 10.1515/mms-2015-0022
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Mišković, Zoran and Šekara, Tomislav",
year = "2015",
abstract = "An original wireless sensor network for vibration measurements was designed. Its primary purpose is modal analysis of vibrations of large structures. A number of experiments have been performed to evaluate the system, with special emphasis on the influence of different effects on simultaneity of data acquired from remote nodes, which is essential for modal analysis. One of the issues is that quartz crystal oscillators, which provide time reading on the devices, are optimized for use in the room temperature and exhibit significant frequency variations if operated outside the 20-30 degrees C range. Although much research was performed to optimize algorithms of synchronization in wireless networks, the subject of temperature fluctuations was not investigated and discussed in proportion to its significance. This paper describes methods used to evaluate data simultaneity and some algorithms suitable for its improvement in small to intermediate size ad-hoc wireless sensor networks exposed to varying temperatures often present in on-site civil engineering measurements.",
publisher = "Polska Akad Nauk, Polish Acad Sciences, Warszawa",
journal = "Metrology and Measurement Systems",
title = "Simultaneity analysis in a wireless sensor network",
pages = "288-275",
number = "2",
volume = "22",
doi = "10.1515/mms-2015-0022"
}

Malović, M., Brajović, L., Mišković, Z.,& Šekara, T.. (2015). Simultaneity analysis in a wireless sensor network. in Metrology and Measurement Systems
Polska Akad Nauk, Polish Acad Sciences, Warszawa., 22(2), 275-288.
https://doi.org/10.1515/mms-2015-0022

Malović M, Brajović L, Mišković Z, Šekara T. Simultaneity analysis in a wireless sensor network. in Metrology and Measurement Systems. 2015;22(2):275-288.
doi:10.1515/mms-2015-0022 .

Malović, Miodrag, Brajović, Ljiljana, Mišković, Zoran, Šekara, Tomislav, "Simultaneity analysis in a wireless sensor network" in Metrology and Measurement Systems, 22, no. 2 (2015):275-288,
https://doi.org/10.1515/mms-2015-0022 . .

TY  - JOUR
AU  - El Swie, H.
AU  - Radojević, Vesna
AU  - Brajović, Ljiljana
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Vladan
AU  - Grujić, Aleksandar
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3084
AB  - The commercial multi-mode optical fiber was coated with magnetic composite material prepared using Nd-Fe-B permanent magnet powder dispersed in poly (ethylene-co-vinyl acetate)-EVA. Characterization of microstructure, thermal stability and mechanical properties of the composite coatings with different Nd-Fe-B powder content were performed using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and standard tensile tester, respectively. Experimental results show that composites with higher content of Nd-Fe-B powder have improved thermal and mechanical properties. Propagation characteristics of the constructed optical fiber magnetic sensing element (OFMSE) in the external magnetic field were investigated in relation to quality and composition of the applied composite coatings. The attenuation of optical signal with applied external magnetic field intensity was monitored and the results suggest that the sample with 50 wt-% of Nd-Fe-B provides the greatest sensitivity of the sensor element.
PB  - Inst Materials Physics, Bucharest
T2  - Digest Journal of Nanomaterials and Biostructures
T1  - Synthesis and performance of polymer based magnetic composite sensing element
EP  - 1483
IS  - 4
SP  - 1475
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3084
ER  - 

@article{
author = "El Swie, H. and Radojević, Vesna and Brajović, Ljiljana and Stajić-Trošić, Jasna and Ćosović, Vladan and Grujić, Aleksandar and Aleksić, Radoslav",
year = "2015",
abstract = "The commercial multi-mode optical fiber was coated with magnetic composite material prepared using Nd-Fe-B permanent magnet powder dispersed in poly (ethylene-co-vinyl acetate)-EVA. Characterization of microstructure, thermal stability and mechanical properties of the composite coatings with different Nd-Fe-B powder content were performed using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and standard tensile tester, respectively. Experimental results show that composites with higher content of Nd-Fe-B powder have improved thermal and mechanical properties. Propagation characteristics of the constructed optical fiber magnetic sensing element (OFMSE) in the external magnetic field were investigated in relation to quality and composition of the applied composite coatings. The attenuation of optical signal with applied external magnetic field intensity was monitored and the results suggest that the sample with 50 wt-% of Nd-Fe-B provides the greatest sensitivity of the sensor element.",
publisher = "Inst Materials Physics, Bucharest",
journal = "Digest Journal of Nanomaterials and Biostructures",
title = "Synthesis and performance of polymer based magnetic composite sensing element",
pages = "1483-1475",
number = "4",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3084"
}

El Swie, H., Radojević, V., Brajović, L., Stajić-Trošić, J., Ćosović, V., Grujić, A.,& Aleksić, R.. (2015). Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures
Inst Materials Physics, Bucharest., 10(4), 1475-1483.
https://hdl.handle.net/21.15107/rcub_technorep_3084

El Swie H, Radojević V, Brajović L, Stajić-Trošić J, Ćosović V, Grujić A, Aleksić R. Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures. 2015;10(4):1475-1483.
https://hdl.handle.net/21.15107/rcub_technorep_3084 .

El Swie, H., Radojević, Vesna, Brajović, Ljiljana, Stajić-Trošić, Jasna, Ćosović, Vladan, Grujić, Aleksandar, Aleksić, Radoslav, "Synthesis and performance of polymer based magnetic composite sensing element" in Digest Journal of Nanomaterials and Biostructures, 10, no. 4 (2015):1475-1483,
https://hdl.handle.net/21.15107/rcub_technorep_3084 .

TY  - CONF
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Radić, V.
AU  - Lazarević, Luka
AU  - Popović, Zdenka
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2584
PB  - Elektrotehnički fakultet, Istočno Sarajevo
C3  - Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel B
T1  - Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity
T1  - Merenje vibracija pružnih pragova i određivanje njihovog dinamičkog ugiba i brzine vozova
EP  - 17
SP  - 13
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1262
ER  - 

@conference{
author = "Malović, Miodrag and Brajović, Ljiljana and Radić, V. and Lazarević, Luka and Popović, Zdenka",
year = "2014",
publisher = "Elektrotehnički fakultet, Istočno Sarajevo",
journal = "Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel B",
title = "Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity, Merenje vibracija pružnih pragova i određivanje njihovog dinamičkog ugiba i brzine vozova",
pages = "17-13",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1262"
}

Malović, M., Brajović, L., Radić, V., Lazarević, L.,& Popović, Z.. (2014). Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity. in Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel B
Elektrotehnički fakultet, Istočno Sarajevo., 13, 13-17.
https://hdl.handle.net/21.15107/rcub_grafar_1262

Malović M, Brajović L, Radić V, Lazarević L, Popović Z. Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity. in Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel B. 2014;13:13-17.
https://hdl.handle.net/21.15107/rcub_grafar_1262 .

Malović, Miodrag, Brajović, Ljiljana, Radić, V., Lazarević, Luka, Popović, Zdenka, "Measurement of Sleepers Vibrations and Determination of Their Dynamic Deflection and Train Velocity" in Zbornik radova / XIII međunarodni naučno-stručni simpozijum Infoteh-Jahorina 2014, Jahorina, Hotel B, 13 (2014):13-17,
https://hdl.handle.net/21.15107/rcub_grafar_1262 .

TY  - JOUR
AU  - Brajović, Ljiljana
AU  - Malović, Miodrag
AU  - Popović, Zdenka
AU  - Lazarević, Luka
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2583
AB  - This paper describes testing of a wireless technique for measuring the actual sleeper vibrations and determination of their dynamic deflection based on the experimentally acquired acceleration data. Practical measurements of sleeper vibrations and calculation of displacements (deflections) along the track provide insight into the actual condition of layers below sleepers. The main goal was to develop the equipment for structural health monitoring as a basis for the track maintenance management.
T2  - Communications - Scientific Letters of the University of Zilina
T1  - Wireless system for sleeper vibrations measurement
EP  - 26
IS  - 4
SP  - 21
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2583
ER  - 

@article{
author = "Brajović, Ljiljana and Malović, Miodrag and Popović, Zdenka and Lazarević, Luka",
year = "2014",
abstract = "This paper describes testing of a wireless technique for measuring the actual sleeper vibrations and determination of their dynamic deflection based on the experimentally acquired acceleration data. Practical measurements of sleeper vibrations and calculation of displacements (deflections) along the track provide insight into the actual condition of layers below sleepers. The main goal was to develop the equipment for structural health monitoring as a basis for the track maintenance management.",
journal = "Communications - Scientific Letters of the University of Zilina",
title = "Wireless system for sleeper vibrations measurement",
pages = "26-21",
number = "4",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2583"
}

Brajović, L., Malović, M., Popović, Z.,& Lazarević, L.. (2014). Wireless system for sleeper vibrations measurement. in Communications - Scientific Letters of the University of Zilina, 16(4), 21-26.
https://hdl.handle.net/21.15107/rcub_technorep_2583

Brajović L, Malović M, Popović Z, Lazarević L. Wireless system for sleeper vibrations measurement. in Communications - Scientific Letters of the University of Zilina. 2014;16(4):21-26.
https://hdl.handle.net/21.15107/rcub_technorep_2583 .

Brajović, Ljiljana, Malović, Miodrag, Popović, Zdenka, Lazarević, Luka, "Wireless system for sleeper vibrations measurement" in Communications - Scientific Letters of the University of Zilina, 16, no. 4 (2014):21-26,
https://hdl.handle.net/21.15107/rcub_technorep_2583 .

TY  - CONF
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana M.
AU  - Mišković, Zoran
AU  - Todorović, Goran
AU  - Cvetković, Jovica
AU  - Banović, Neven
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6040
AB  - Na Građevinskom fakultetu u Beogradu realizovan je originalan bežični senzorski uređaj namenjen prvenstveno za merenje vibracija u građevinarstvu. Jedan od nedostataka bežičnih senzorskih sistema u odnosu na žičane jeste nepostojanje zajedničkog takta (izvora vremena). Zato je značajno postići dobru vremensku sinhronizaciju na druge načine a zatim eksperimentalno verifikovati vremensku neodređenost mernih podataka. Što je vremenska sinhronizacija bolja, moguće je vršiti modalnu analizu vibracija građevinskih objekata više frekvencije. U radu je prikazano više metoda kojima se poboljšava vremenska određenost uzoraka i dobijeni su rezultati reda veličine 10 µs.
PB  - Društvo Metrologa Srbije
C3  - Zbornik radova Kongresa Metrologa 2013
T1  - Analiza vremenske sinhronizovanosti bežičnih senzorskih uređaja za merenje vibracija u građevinarstvu
SP  - Sekcija 1 Rad 5
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6040
ER  - 

@conference{
author = "Malović, Miodrag and Brajović, Ljiljana M. and Mišković, Zoran and Todorović, Goran and Cvetković, Jovica and Banović, Neven",
year = "2013",
abstract = "Na Građevinskom fakultetu u Beogradu realizovan je originalan bežični senzorski uređaj namenjen prvenstveno za merenje vibracija u građevinarstvu. Jedan od nedostataka bežičnih senzorskih sistema u odnosu na žičane jeste nepostojanje zajedničkog takta (izvora vremena). Zato je značajno postići dobru vremensku sinhronizaciju na druge načine a zatim eksperimentalno verifikovati vremensku neodređenost mernih podataka. Što je vremenska sinhronizacija bolja, moguće je vršiti modalnu analizu vibracija građevinskih objekata više frekvencije. U radu je prikazano više metoda kojima se poboljšava vremenska određenost uzoraka i dobijeni su rezultati reda veličine 10 µs.",
publisher = "Društvo Metrologa Srbije",
journal = "Zbornik radova Kongresa Metrologa 2013",
title = "Analiza vremenske sinhronizovanosti bežičnih senzorskih uređaja za merenje vibracija u građevinarstvu",
pages = "Sekcija 1 Rad 5",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6040"
}

Malović, M., Brajović, L. M., Mišković, Z., Todorović, G., Cvetković, J.,& Banović, N.. (2013). Analiza vremenske sinhronizovanosti bežičnih senzorskih uređaja za merenje vibracija u građevinarstvu. in Zbornik radova Kongresa Metrologa 2013
Društvo Metrologa Srbije., Sekcija 1 Rad 5.
https://hdl.handle.net/21.15107/rcub_technorep_6040

Malović M, Brajović LM, Mišković Z, Todorović G, Cvetković J, Banović N. Analiza vremenske sinhronizovanosti bežičnih senzorskih uređaja za merenje vibracija u građevinarstvu. in Zbornik radova Kongresa Metrologa 2013. 2013;:Sekcija 1 Rad 5.
https://hdl.handle.net/21.15107/rcub_technorep_6040 .

Malović, Miodrag, Brajović, Ljiljana M., Mišković, Zoran, Todorović, Goran, Cvetković, Jovica, Banović, Neven, "Analiza vremenske sinhronizovanosti bežičnih senzorskih uređaja za merenje vibracija u građevinarstvu" in Zbornik radova Kongresa Metrologa 2013 (2013):Sekcija 1 Rad 5,
https://hdl.handle.net/21.15107/rcub_technorep_6040 .

TY  - CONF
AU  - Todorović, Goran
AU  - Brajović, Ljiljana M.
AU  - Malović, Miodrag
AU  - Gospavić, Radovan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6039
AB  - U radu su prikazani rezultati in situ merenja temperaturskog polja i osvetljenosti jednog prozora poslovne zgrade u Beogradu u periodu od mesec dana i razvijen fizički model za izračunavanje koeficijenta prolaza toplote i solarnih dobitaka. Vršena su merenja temperature vazduha u neposrednoj blizini stakla simetrično postavljenim data logerima i temperature vazduha sa spoljašnje i unutrašnje strane prostorije. Osvetljenost je merena luksmetrima i fotonaponskim ćelijama sa obe strane prozora. Rezultati dobijeni na ovaj način su upoređeni sa proračunima na bazi standarda iz oblasti energetske efikasnosti prozora SRPS EN ISO 10077 i zgrada SRPS EN ISO 13790.
PB  - Društvo Metrologa Srbije
C3  - Zbornik radova Kongresa Metrologa 2013
T1  - Određivanje koeficijenta prolaza toplote i solarnih dobitaka prozora merenjem temperature i osvetljenosti
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6039
ER  - 

@conference{
author = "Todorović, Goran and Brajović, Ljiljana M. and Malović, Miodrag and Gospavić, Radovan",
year = "2013",
abstract = "U radu su prikazani rezultati in situ merenja temperaturskog polja i osvetljenosti jednog prozora poslovne zgrade u Beogradu u periodu od mesec dana i razvijen fizički model za izračunavanje koeficijenta prolaza toplote i solarnih dobitaka. Vršena su merenja temperature vazduha u neposrednoj blizini stakla simetrično postavljenim data logerima i temperature vazduha sa spoljašnje i unutrašnje strane prostorije. Osvetljenost je merena luksmetrima i fotonaponskim ćelijama sa obe strane prozora. Rezultati dobijeni na ovaj način su upoređeni sa proračunima na bazi standarda iz oblasti energetske efikasnosti prozora SRPS EN ISO 10077 i zgrada SRPS EN ISO 13790.",
publisher = "Društvo Metrologa Srbije",
journal = "Zbornik radova Kongresa Metrologa 2013",
title = "Određivanje koeficijenta prolaza toplote i solarnih dobitaka prozora merenjem temperature i osvetljenosti",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6039"
}

Todorović, G., Brajović, L. M., Malović, M.,& Gospavić, R.. (2013). Određivanje koeficijenta prolaza toplote i solarnih dobitaka prozora merenjem temperature i osvetljenosti. in Zbornik radova Kongresa Metrologa 2013
Društvo Metrologa Srbije..
https://hdl.handle.net/21.15107/rcub_technorep_6039

Todorović G, Brajović LM, Malović M, Gospavić R. Određivanje koeficijenta prolaza toplote i solarnih dobitaka prozora merenjem temperature i osvetljenosti. in Zbornik radova Kongresa Metrologa 2013. 2013;.
https://hdl.handle.net/21.15107/rcub_technorep_6039 .

Todorović, Goran, Brajović, Ljiljana M., Malović, Miodrag, Gospavić, Radovan, "Određivanje koeficijenta prolaza toplote i solarnih dobitaka prozora merenjem temperature i osvetljenosti" in Zbornik radova Kongresa Metrologa 2013 (2013),
https://hdl.handle.net/21.15107/rcub_technorep_6039 .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana M.
AU  - Mišković, Zoran
AU  - Todorović, Goran
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6019
AB  - Non-destructive structural health monitoring of civil engineering structures is based on vibrations masurements of objects during dynamic tests or during theirexploitation. Wireless sensor networks are increasingly being used for this purpose. They make flexibleand inexpensive measurement systems because large cables to connect the sensors are avoided. This paper presents a vibration monitoring wireless system developed at the Faculty of Civil engineering in Belgrade. The structure and characteristics of the measurement system, based on low consumption electronic components and original embedded software real time operating system, are described.
PB  - Union of Engineers and Technicians of Serbia
T2  - Technics - Our Civil Engineering
T1  - Vibration measurements using a wireless sensors network
EP  - 26
IS  - special edition
SP  - 19
VL  - 68
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6019
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana M. and Mišković, Zoran and Todorović, Goran",
year = "2013",
abstract = "Non-destructive structural health monitoring of civil engineering structures is based on vibrations masurements of objects during dynamic tests or during theirexploitation. Wireless sensor networks are increasingly being used for this purpose. They make flexibleand inexpensive measurement systems because large cables to connect the sensors are avoided. This paper presents a vibration monitoring wireless system developed at the Faculty of Civil engineering in Belgrade. The structure and characteristics of the measurement system, based on low consumption electronic components and original embedded software real time operating system, are described.",
publisher = "Union of Engineers and Technicians of Serbia",
journal = "Technics - Our Civil Engineering",
title = "Vibration measurements using a wireless sensors network",
pages = "26-19",
number = "special edition",
volume = "68",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6019"
}

Malović, M., Brajović, L. M., Mišković, Z.,& Todorović, G.. (2013). Vibration measurements using a wireless sensors network. in Technics - Our Civil Engineering
Union of Engineers and Technicians of Serbia., 68(special edition), 19-26.
https://hdl.handle.net/21.15107/rcub_technorep_6019

Malović M, Brajović LM, Mišković Z, Todorović G. Vibration measurements using a wireless sensors network. in Technics - Our Civil Engineering. 2013;68(special edition):19-26.
https://hdl.handle.net/21.15107/rcub_technorep_6019 .

Malović, Miodrag, Brajović, Ljiljana M., Mišković, Zoran, Todorović, Goran, "Vibration measurements using a wireless sensors network" in Technics - Our Civil Engineering, 68, no. special edition (2013):19-26,
https://hdl.handle.net/21.15107/rcub_technorep_6019 .

TY  - JOUR
AU  - Stojanović, Dušica
AU  - Brajović, Ljiljana
AU  - Orlović, Aleksandar
AU  - Dramlić, Dragan
AU  - Radmilović, Velimir R.
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2547
AB  - This work reports the preparation of PMMA/silica nanocomposites with high optical transparency and enhanced mechanical properties using a melt compounding method. The surface of SiO2 particles was modified with a gamma-methacryloxypropyltrimethoxy silane coupling agent in a supercritical carbon dioxide-ethanol mixture and by conventional procedure. Dispersion of silica nanoparticles in ethanol at low temperatures plays an important role in deagglomeration and dispersion of nanosilica, which leads to the optimal particle-matrix bonding in composites. The optimal mechanical and optical properties were found for composites loaded with 5 wt% silica nanoparticles treated under supercritical coating method.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Transparent PMMA/silica nanocomposites containing silica nanoparticles coating under supercritical conditions
EP  - 631
IS  - 4
SP  - 626
VL  - 76
DO  - 10.1016/j.porgcoat.2012.12.002
ER  - 

@article{
author = "Stojanović, Dušica and Brajović, Ljiljana and Orlović, Aleksandar and Dramlić, Dragan and Radmilović, Velimir R. and Uskoković, Petar and Aleksić, Radoslav",
year = "2013",
abstract = "This work reports the preparation of PMMA/silica nanocomposites with high optical transparency and enhanced mechanical properties using a melt compounding method. The surface of SiO2 particles was modified with a gamma-methacryloxypropyltrimethoxy silane coupling agent in a supercritical carbon dioxide-ethanol mixture and by conventional procedure. Dispersion of silica nanoparticles in ethanol at low temperatures plays an important role in deagglomeration and dispersion of nanosilica, which leads to the optimal particle-matrix bonding in composites. The optimal mechanical and optical properties were found for composites loaded with 5 wt% silica nanoparticles treated under supercritical coating method.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Transparent PMMA/silica nanocomposites containing silica nanoparticles coating under supercritical conditions",
pages = "631-626",
number = "4",
volume = "76",
doi = "10.1016/j.porgcoat.2012.12.002"
}

Stojanović, D., Brajović, L., Orlović, A., Dramlić, D., Radmilović, V. R., Uskoković, P.,& Aleksić, R.. (2013). Transparent PMMA/silica nanocomposites containing silica nanoparticles coating under supercritical conditions. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 76(4), 626-631.
https://doi.org/10.1016/j.porgcoat.2012.12.002

Stojanović D, Brajović L, Orlović A, Dramlić D, Radmilović VR, Uskoković P, Aleksić R. Transparent PMMA/silica nanocomposites containing silica nanoparticles coating under supercritical conditions. in Progress in Organic Coatings. 2013;76(4):626-631.
doi:10.1016/j.porgcoat.2012.12.002 .

Stojanović, Dušica, Brajović, Ljiljana, Orlović, Aleksandar, Dramlić, Dragan, Radmilović, Velimir R., Uskoković, Petar, Aleksić, Radoslav, "Transparent PMMA/silica nanocomposites containing silica nanoparticles coating under supercritical conditions" in Progress in Organic Coatings, 76, no. 4 (2013):626-631,
https://doi.org/10.1016/j.porgcoat.2012.12.002 . .

TY  - JOUR
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana
AU  - Mišković, Zoran
AU  - Todorović, Goran
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2022
AB  - Nedestruktivno praćenje stanja građevinskih objekata se bazira na merenju vibracija objekata pri dinamičkim ispitivanjima ili u toku njihove eksploatacije. U ovu svrhu se sve više koriste mreže bežičnih senzora koje čine fleksibilan i jeftin merni sistem, jer nema razvlačenja kablova velikih dužina za povezivanje senzora. U ovom radu je opisan sistem za bežično merenje vibracija na objektima razvijen na Građevinskom fakultetu u Beogradu. Predstavljeni su struktura i karakteristike mernog sistema baziranog na elektronskim komponentama male potrošnje i originalnom softveru.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Merenje vibracija mrežom bežičnih senzora
EP  - 889
IS  - 6
SP  - 883
VL  - 67
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2022
ER  - 

@article{
author = "Malović, Miodrag and Brajović, Ljiljana and Mišković, Zoran and Todorović, Goran",
year = "2012",
abstract = "Nedestruktivno praćenje stanja građevinskih objekata se bazira na merenju vibracija objekata pri dinamičkim ispitivanjima ili u toku njihove eksploatacije. U ovu svrhu se sve više koriste mreže bežičnih senzora koje čine fleksibilan i jeftin merni sistem, jer nema razvlačenja kablova velikih dužina za povezivanje senzora. U ovom radu je opisan sistem za bežično merenje vibracija na objektima razvijen na Građevinskom fakultetu u Beogradu. Predstavljeni su struktura i karakteristike mernog sistema baziranog na elektronskim komponentama male potrošnje i originalnom softveru.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Merenje vibracija mrežom bežičnih senzora",
pages = "889-883",
number = "6",
volume = "67",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2022"
}

Malović, M., Brajović, L., Mišković, Z.,& Todorović, G.. (2012). Merenje vibracija mrežom bežičnih senzora. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 67(6), 883-889.
https://hdl.handle.net/21.15107/rcub_technorep_2022

Malović M, Brajović L, Mišković Z, Todorović G. Merenje vibracija mrežom bežičnih senzora. in Tehnika. 2012;67(6):883-889.
https://hdl.handle.net/21.15107/rcub_technorep_2022 .

Malović, Miodrag, Brajović, Ljiljana, Mišković, Zoran, Todorović, Goran, "Merenje vibracija mrežom bežičnih senzora" in Tehnika, 67, no. 6 (2012):883-889,
https://hdl.handle.net/21.15107/rcub_technorep_2022 .

TY  - CONF
AU  - Malović, Miodrag
AU  - Brajović, Ljiljana M.
AU  - Mišković, Zoran
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6041
AB  - Nedestruktivno praćenje stanja građevinskih objekata se bazira na merenju vibracija objekata pri dinamičkim ispitivanjima ili u toku njihove eksploatacije. U ovu svrhu se sve više koriste mreže bežičnih senzora (WSN) koje čine fleksibilan i jeftin merni sistem, jer nema razvlačenja kablova velikih dužina za povezivanje senzora. U ovom radu je ukratko prikazan sadašnji stepen razvoja i primene WSN i opisan je sistem za bežično merenje vibracija na objektima razvijen na Građevinskom fakultetu u Beogradu. Predstavljeni su struktura i karakteristike mernog sistema baziranog na elektronskim komponentama male potrošnje i originalnom softveru.
PB  - Društvo Metrologa Srbije
C3  - Zbornik radova Kongresa Metrologa 2011
T1  - Mreža bežičnih senzora za merenje vibracija na građevinskim objektima
EP  - 46
SP  - 39
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6041
ER  - 

@conference{
author = "Malović, Miodrag and Brajović, Ljiljana M. and Mišković, Zoran",
year = "2011",
abstract = "Nedestruktivno praćenje stanja građevinskih objekata se bazira na merenju vibracija objekata pri dinamičkim ispitivanjima ili u toku njihove eksploatacije. U ovu svrhu se sve više koriste mreže bežičnih senzora (WSN) koje čine fleksibilan i jeftin merni sistem, jer nema razvlačenja kablova velikih dužina za povezivanje senzora. U ovom radu je ukratko prikazan sadašnji stepen razvoja i primene WSN i opisan je sistem za bežično merenje vibracija na objektima razvijen na Građevinskom fakultetu u Beogradu. Predstavljeni su struktura i karakteristike mernog sistema baziranog na elektronskim komponentama male potrošnje i originalnom softveru.",
publisher = "Društvo Metrologa Srbije",
journal = "Zbornik radova Kongresa Metrologa 2011",
title = "Mreža bežičnih senzora za merenje vibracija na građevinskim objektima",
pages = "46-39",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6041"
}

Malović, M., Brajović, L. M.,& Mišković, Z.. (2011). Mreža bežičnih senzora za merenje vibracija na građevinskim objektima. in Zbornik radova Kongresa Metrologa 2011
Društvo Metrologa Srbije., 39-46.
https://hdl.handle.net/21.15107/rcub_technorep_6041

Malović M, Brajović LM, Mišković Z. Mreža bežičnih senzora za merenje vibracija na građevinskim objektima. in Zbornik radova Kongresa Metrologa 2011. 2011;:39-46.
https://hdl.handle.net/21.15107/rcub_technorep_6041 .

Malović, Miodrag, Brajović, Ljiljana M., Mišković, Zoran, "Mreža bežičnih senzora za merenje vibracija na građevinskim objektima" in Zbornik radova Kongresa Metrologa 2011 (2011):39-46,
https://hdl.handle.net/21.15107/rcub_technorep_6041 .