The effect of sociodemographic characteristics on the self-evaluation of health among the population in Serbia

This paper analyses the impacts of various demographic and socioeconomic characteristics on the way Serbian people assess their own health. Marital status, education level, and occupation were analysed using the threeway ANOVA statistical method. The results of the statistical analysis show that each of the selected features significantly affects the subjective experience of health conditions. Regarding marital status, unmarried people assessed their health status most favourably. In terms of education, a better perception of health was observed in people with higher levels of education. And considering gender, only marital status had an impact on the self-assessment of health in both sexes. For men, education had an impact, whereas for women, it was the type of occupation. The specificity in perception of one’s own health in the elderly population of Serbia (above 60 years old) is reflected in the fact that occupation was the only factor that influenced the subjective experience of health status. © 2022 Demographic Research Centre. All rights reserved

EMISSION LINE ASSIMETRY IN ACTIVE GALAXIES: Mrk 533 AND Mrk 110

Abstract. In this work emission line asymmetries detected in two different types of Active Galactic Nuclei (AGN) -Seyfert 1 galaxy Mrk 110 and Seyfert 2 galaxy Mrk 533 were analyzed. Since emission lines in two galaxies arise in different emitting regions, detailed spectrum analysis gave the insight into kinematical properties of the Narrow Line and the Broad Line region (NLR and BLR) of this galaxies. We used several methods in the analysis procedure: (a) in order to analyse line profiles we performed profile decomposition into Gaussian components, (b) to study kinematical properties of the gas in the stellar disk, we used the model of "tilted-rings" (Begeman 1989), (c) to determine the sources of ionization of emitting region, we used the Veilleux and Osterbrock diagnostic diagram (Veilleux and Osterbrock 1987), (d) thermodynamical properties of the BLR were determined using the Boltzman plot method We showed that the red-shift and asymmetry of emission lines in Mrk 110 are probable caused by the strong gravitational field of the super massive black hole in the center of this galaxy. On the other hand, detailed analysis of 3D spectrophotometric observation of Mrk 533 made possible to map the outflow velocities from the very center of this galaxy, as well as shock waves in the circum-nuclear region, and to analyse the increase of the blue asymmetry with the increase of the outflow velocity (in more details se

Gait Phases Recognition from Accelerations and Ground Reaction Forces: Application of Neural Networks

The goal of this study was to test the applicability of accelerometer as the sensor for assessment of the walking. We present here the comparison of gait phases detected from the data recorded by force sensing resistors mounted in the shoe insoles, non-processed acceleration and processed acceleration perpendicular to the direction of the foot. The gait phases in all three cases were detected by means of a neural network. The output from the neural network was the gait phase, while the inputs were data from the sensors. The results show that the errors were in the ranges: 30 ms (2.7%) – force sensors; 150 ms (13.6%) – nonprocessed acceleration, and 120 ms (11%) – processed acceleration data. This result suggests that it is possible to use the accelerometer as the gait phase detector, however, with the knowledge that the gait phases are time shifted for about 100 ms with respect the neural network predicted times

Thermal InfraRed surveys from Antarctica for extragalactic astronomy

The outstanding atmospheric conditions of the Dome C give a unique opportunity to survey deeply large areas of the sky in the thermal infrared reaching interesting sensitivity limits for extragalactic astronomy. Our extragalactic database HyperLeda will benefit from new infrared data, especially for characterizing nuclear and starburst activity of AGNs and ULIRGs

The concept of green infrastructure and urban landscape planning: a challenge for urban forestry planning in Belgrade, Serbia

The beginning of the 21st century has witnessed a growth in our understanding of the importance of planning urban landscapes in the context of urban population growth and unpredictable climatic conditions. In the search for responses to the challenges set by the development of contemporary urban landscapes, researchers have offered solutions based on the concept of sustainable and resilient cities, whose spatial development would be based on an interdisciplinary approach to strategy development: biodiversity, urban ecological networks and connectivity, multifunctionality and modularity. Although the concepts of a green infrastructure, in their spatial and functional dimensions, allow the application of such strategies, there are still problems when it comes to implementation and measuring the results achieved. At the same time, there is a growing discussion of the important role played by urban forestry in the context of the collaborative planning of urban landscapes and the application of the ideas of a green infrastructure. The key question is: what are the modalities of application of the concept of green infrastructure in the process of planning the development of the modern city and how can the resulting benefits be evaluated? With the modalities of application of the concept of green infrastructure in mind, we discuss its multi-scale and multifunctional dimensions as applied in the case of Serbia. The realisation of the green infrastructure concept is presented through the example of the Urban Forest Management Plan for the City of Belgrade - Mladenovac Municipality. The results of using the spatial-ecological approach in creating the plan and establishing connectivity as a new aim in forest management planning show that the implementation of the green infrastructure concept, and the achieved multifunctional ecosystem values, can be presented on the basis of the parameters of landscape metrics. In light of the new urban world, future research should focus on the application of the landscape ecological approach of the green infrastructure concept in collaborative planning at the urban landscape scale, which allows the creation of ecosystem services and benefits to human well-being

Polyglycine Modified Glassy Carbon Electrode for Ibuprofen Determination

A simple modification of bare glassy carbon electrode by electropolymerization of glycine by cyclic voltammetry was applied to the detection of ibuprofen. The polyglycine modified glassy carbon electrode was characterized by cyclic voltammetry and the electroactive surface area was determined. The study of ibuprofen in acetic acid buffer (0.25 M, pH 4.0) presented an electrocatalytic effect toward ibuprofen oxidation, increasing the current response and decrease of oxidation potential, at the modified electrode compared to the bare. Under the optimal conditions, the modified electrode gave a linear response in the ibuprofen concentration range of 10 to 200 μM, obtained correlation coefficient was 0.9993. the calculated limit of detection (3Sb/m) was 1.0 μM and the limit of quantification (10Sb/m) was 3.5 μM. the sensor was successfully used for the determination of ibuprofen in pharmaceutical preparations with satisfactory recoveries, 93–107 %. The new sensor showed good selectivity, repeatability, and reproducibility with satisfactory stability