Дигитални репозиторијум ВАСЕЉЕНА
Дигитални репозиторијум ВАСЕЉЕНА је заједнички репозиторијум свих чланица Универзитета у Источном Сарајеву.
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Sports Injuries in Basketball Players: A Systematic Review
(MDPI, 2024) Aksović, Nikola; Bubanj, Saša; Bjelica, Bojan; Kocić, Miodrag; Lilić, Ljubiša; Zelenović, Milan; Stanković, Dušan; Milanović, Filip; Pajović, Lazar; Čaprić, Ilma; Milić, Vladan; Dobrescu, Tatiana; Sufaru, Constantin
(1) Background: The objective of this systematic review was to collect relevant data in the available contemporary studies about sports injuries of basketball players and explain differences in sports injuries relative to gender, location, sport, and position on the court; (2) Methods: The papers were searched digitally using PubMed, MEDLINE, ERIC, Google Scholar, and ScienceDirect databases, from 1990 to 2024; (3) Results: The most frequent severe injuries for both genders are knee and ankle injuries and the most frequent forms of injury are ankle sprain and ligament strain. The most frequent injuries occur during running and after contact with the ball. Shooting guards sustain the highest injury rate followed by centers and point guards, while guards have the highest rate of adductor muscle injury; and (4) Conclusions: Studies indicate that ankle and knee injuries are prevalent among basketball players, with ankle sprains being particularly prevalent. Knee injuries are more common in female basketball players, including ACL injuries. Various factors contribute to injuries, including the biomechanics of jumping, landing, sudden changes in direction, and the
physical demands placed on the body during the game.
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Modeling a LoRAWAN Network for Vehicle WildlifeCollision Avoidance System on Rural Roads
(Springer, 2024) Jotanovic, Gordana; Jausevac, Goran; Perakovic, Dragan; Dobrilovic, Dalibor; Stojanov, Zeljko; Brtka, Vladimir
The network of rural roads covers different types of terrain, including forest areas, pastures, arable land andsparsely populated areas. The safety of people and animals is a priority in traffi c on these roads. Early detectionof pedestrians, animals and other moving objects along the road can signifi cantly reduce the risk of accidents.As part of this research, a sensor system is being developed that can detect characteristics of living things inmotion, such as unexpectedly crossing the road without clear signs. Such timely detection of moving objectsenables adequate preventive measures and reduces potential traffi c accidents. The consequences of traffi caccidents of this type can cause serious damage to animals and people property, and road infrastructure. Thetopicality of this problem at the spatial and seasonal level is emphasized in studies that identify the hotspots ofthese accidents. Factors such as traffi c characteristics and road infrastructure are key to modeling protectivesystems on rural roads. The presented study investigates the deployment of sensor nodes and LoRAWANgateways for wildlife detection on rural roads, with the aim of reducing the risk of traffi c accidents caused byWildlife-Vehicle Collisions.
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Comparison between Mechanical Properties and Joint Performance of AA 2024-T351 Aluminum AlloyWelded by Friction Stir Welding, Metal Inert Gas and Tungsten Inert Gas Processes
(MDPI, 2024) Milčić, Miodrag; Klobčar, Damjan; Milčić, Dragan; Zdravković, Nataša; Ðurić, Aleksija; Vuherer, Tomaž
The aim of this work is to study joining Al 2024-T3 alloy plates with different welding procedures. Aluminum alloy AA 2024-T351 is especially used in the aerospace industry. Aluminum plates are welded by the TIG and MIG fusion welding process, as well as by the solid-state welding process, friction stir welding (FSW), which has recently become very important in aluminum and alloy welding. For welding AA2024-T35 with MIG and TIG fusion processes, the filler material ER 4043—AlSi5 was chosen because of reduced cracking. Different methods were used to evaluate the quality of the produced joints, including macro- and microstructure evaluation, in addition to hardness and tensile tests. The ultimate tensile strength (UTS) of the FSW sample was found to be 80% higher than that of MIG and TIG samples. The average hardness value of the weld zone of metal for the MIG- and TIG-produced AA2024-T3511 butt joints showed a significant decrease compared to the hardness of the base metal AA2024-T351 by 50%, while for FSW joints, in the nugget zone, the
hardness is about 10% lower relative to the base metal AA2024-T3511.
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Novel tuning rules for PIDC controllers in automatic voltage regulation systems under constraints on robustness and sensitivity to measurement noise
(ELSEVIER, 2024) Bošković, Marko Č.; Šekara, Tomislav B.; Stojić, Djordje M.; Rapaić, Milan R.
This paper presents a novel analytical method for designing the Proportional-Integral-Derivative controller with serial Compensator (PIDC) for automatic voltage regulation (AVR). The primary focus of this method is to address constraints related to robustness and sensitivity to measurement noise. The key concept behind this proposed design method lies in selecting a specific complementary sensitivity function, which is determined by two adjustable parameters, λ affecting performance and N primarily affecting robustness to measurement noise. The ultimate goal of the PIDC controller design is to achieve enhanced rejection of load disturbances and ensure satisfactory reference tracking. The method proposed in this paper offers a combination of flexibility and simplicity, providing new analytical tuning formulas for PIDC controller based on a pair of adjustable parameters affecting the trade-off between performance and robustness. The paper thoroughly analyzes the dependencies of performance and robustness indices on the design parameters, elucidating the associated trade-offs in detail. A comparative analysis with respect to two recently proposed optimal design methods has been performed in a simulation setting. Subsequently, the effectiveness of the proposed analytical method has been experimentally validated using a small-scale synchronous generator in a laboratory setting. The application of the proposed approach, resulting in enhanced suppression of disturbances is improved, as evidenced by improvements in the Integral of Absolute Error (IAE). Additionally, the proposed design method demonstrated robustness against uncertainties in the plant model and the measurement noise.
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The Impact of Cytokines on Health-Related Quality of Life in Adolescents with Allergic Rhinitis
(MDPI, 2024) Krsmanović, Ljiljana; Arsović, Nenad; Bokonjić, Dejan; Nešić, Vladimir; Dudvarski, Zoran; Pavlović, Dragana; Dubravac Tanasković, Milena; Ristić, Siniša; Elez-Burnjaković, Nikolina; Balaban, Radmila; Ćurčić, Branislava; Ivanović, Radenko; Vuković, Nikolina; Vuković, Maja; Milić, Marija; Joksimović, Bojan
Background: Frequent episodes of nasal symptoms are the usual clinical manifestations (CM) of allergic rhinitis (AR) and have a significant negative impact on health-related quality of life (HRQoL) in adolescents. The purpose of this cross-sectional study was to test the hypothesis that cytokines in nasal mucus may be associated with HRQoL in adolescents with AR. Methods: European Quality of Life 5 Dimensions 3 Level Version (EQ-5D-3L), “The Adolescent Rhinoconjunctivitis Quality of Life Questionnaire” (AdolRQLQ) and the Total 4 Symptom Score (T4SS) scoring system were administered to 113 adolescents with AR, nonallergic rhinitis (NAR) and to healthy control subjects. Nasal secretions were sampled and tested for 13 cytokines using a multiplex flow cytometric bead assay. Results: The AR group had significantly lower EQ-5D-3L (0.661 ± 0.267 vs. 0.943 ± 0.088; p < 0.001) and higher AdolRQLQ total scores (2.76 ± 1.01 vs. 1.02 ± 0.10; p < 0.001) compared to the control group. The AR group had higher concentrations of IL-1β (p = 0.002), IL-6 (p = 0.031), IL-8 (p < 0.001), IL17-A (p = 0.013) and IL-18 (p = 0.014) compared to the control group, and IL-1β, IL-6, IL17-A and IL-18 were significantly (p < 0.050) increased with disease progression. Cytokines IL-1β, IL-6, as well as severe CM, were identified as significant predictors of lower HRQoL in adolescents with AR. Conclusions: This study identified IL-1β, IL-6, as well as severe CM, as predictors of lower HRQoL in adolescents with AR. However, these results should only serve as a starting point for additional confirmation research.