bluuebunny/crossref_metadata_2025 huggingface dataset:
Differences in static balance between female athletes and rhythmic gymnasts
Authors: Mijalković Stefan , Marković Andrea , Aleksić-Veljković Aleksandra , Stanković Daniel
Published: April 2024

The aim of this study was to determine the differences in static balance between female athletes and rhythmic gymnasts. The sample of respondents consisted of 15 female athletes with mean age of 10.47±1.73 and 17 rhythmic gymnasts with mean age of 10.18±1.98. Static balance testing consisted of three stances (stand with both feet, stand on one foot and tandem stance) that were performed on soft and firm surfaces. The results of this study indicated that there was a statistically significant difference between female athletes and rhythmic gymnasts in the static balance mistakes achieved on a hard surface as well as the total number of mistakes achieved. The difference was in favor of the rhythmic gymnasts. It can be said that although static balance is more prevalent in rhythmic gymnastics than in athletics, it is necessary for athletic trainers to develop this basic motor ability of their athletes in order to improve sports success and prevention of possible injuries.
Political factors of the spread of Sokol movement in Europe during the 19th and 20th centuries
Authors: Pavlović Jovana , Vitošević Biljana , Filipović Milica
Published: April 2024

This study examines the historical development of the Sokol movement, employing heuristic, critical, synthetic, and dispositive analyses across various contexts of East and Central Europe. Spanning from its inception in the 19th century to World War II, the research aims to unearth new sociopolitical, economic, and cultural insights that directly influenced the Sokol movement's evolution among various Slavic groups. Through this lens, the study not only addresses the identities of the Sokols, their contributions, and reasons for their decline but also the intricate interplay between the Sokol organization as a Slavic national movement and other philosophical, political, and social ideologies, such as liberalism, enlightenment, rationalism, empiricism, and gender equality.
Systematisation of current research of exercises on uneven bars
Authors: Mekić Raid , Petković Emilija , Murić Benin , Kahrović Izet , Radenković Oliver , Mujanović Rifat , Čaprić Ilma , Gračanin Irfan , Đorđević Dušan
Published: April 2024

The subject of the work is the previous research on the uneven bars. The goal is to systematize the collected research in this discipline, with an analysis of what has been achieved in the scientific and professional part. 30 papers from electronic databases or unpublished publications were collected. Of these, 24 papers were commented with the aim of explaining the subject and goal of the research, and the other 6 papers were classified according to the subject of the research. In this work, the collected researches are systematized into two groups according to the subject of the research, and they are presented with a comment. Other systematization of works was done according to the frequency of publication in magazines, the method of movement analysis and based on the sample of respondents. The systematization of the research concluded that a small number of collected and published papers investigating exercises on uneven bars in women compared to research that was published with exercises on the height bar and the parallel bar in men. Although the research is more recent, a small percentage of exercises on uneven bars was investigated (7.83 %) in order to improve the performance technique or training methodology of the exercises, further research is needed, because very few works cover the number of exercises performed in the discipline uneven bars.
Types and frequency of sports injuries in karate
Authors: Mujanović Rifat , Mojsilović Zoran , Mujanović Dino , Mekić Raid
Published: April 2024

Karate is considered one of the most popular martial arts in which the number of participants and established clubs is constantly increasing. The World Karate Federation is one of the largest international governing bodies with 198 member countries and over 10 million members. The competition is constantly increasing, and coaches, in their desire for the success of their athletes, often overdo their training. This leads to sports injuries that keep athletes away from martial arts gyms, thereby impairing their sports form and achieving the desired, optimal sports results. Sports injuries are all those that occurred during sports activities or exercise, and the causes are usually mechanical. Sports injuries are all those that occurred during sports activities or exercise, and the causes are usually mechanical. The aim of the paper is to determine the type and frequency of injuries in karate and to identify the causes of their frequency in the system of training and competition. The obtained results of the research will help in the formation of proposals for preventive action in the case of the most frequent injuries that can be determined to be the result of the specific impact of training and competition.
Differences in body composition and functional abilities between rhythmic gymnasts, swimmers and artistic swimmers
Authors: Rančić Doroteja , Marković Andrea , Majkić Branislav , Stojanović Tijana , Aleksić Dragana
Published: April 2024

The aim of this study was to determine the difference in body composition and functional abilities between rhythmic gymnasts, swimmers and artistic swimmers. In this cross-sectional study 60 female respondents participated. The sample was divided into 3 subsamples: rhythmic gymnasts (n= 20, age 14.3±0.9 y.) with a training process of 7.1±1.6 years, swimmers (n= 20, age 15.1±0.7 y.) with a regular training process of 4.3±2.7 years and artistic swimmers (n= 20, age 15.8±1.2 y.) with a regular training process of 5.4±1.8 years. The tested variables of body composition were body mass, body mass index, percentage of body fat, percentage of muscle mass. Body composition was measured with bioimpedance Omron BF511 (Omron Healthcare Co, Kjoto, Japan). Measurement of resting heart rate (RHR) was assessed palpably in the area of carotid. Forced Vital Capacity (FVC) and Forced Expiratory Capacity (FVC1) were measured using electronic spirometer Microspiro HI-801 (Microspiro-801 Nihon Kohden). To determine the difference in body composition and functional abilities between groups, Analysis of variance (ANOVA) was used and Bonferroni post-Hoc test to determine the precise difference in variables. Statistical significance was set at p= 0.05. The results in the area of body composition did not show a statistically significant difference between the groups. However, the difference was shown in functional abilities between rhythmic gymnasts and swimmers of both groups (p=0.00). It can be concluded that the difference occurs due to the nature of sports, where the training of swimmers continuously requires an anaerobic regime of work.
Effects of physical exercise on motor skills of children with intellectual disorders: Systematic review
Authors: Đorđević Stefan , Jorgić Bojan , Hadžović Miljan , Milenković Saša , Stojanović Stefan , Popović Miodrag
Published: April 2024

The aim of this research was to determine, on the basis of a systematic review of previous research, whether and to what extent physical exercise affects the motor abilities of persons with intellectual disabilities. The sample of respondents were people with intellectual deficits, male and female, a total of 1203 respondents. The criteria for the analysis of the papers were as follows: the time period of publishing the papers from 2010 to 2020, that the respondents were persons with an intellectual deficit. Based on the set criteria, 14 papers were included in the final analysis, which were analyzed and presented. The experimental exercise program consisted of exercises to develop and improve balance, coordination, strength, manual dexterity, running speed, and agility. The results of the research, programs that lasted 8 or more weeks, with trainings at intervals of 3 to 5 times a week and lasted 20 or more minutes give positive results in terms of development of basic motor characteristics, speed, coordination, balance and strength, while physical activity generally has a positive effect on childhood development. The impact of physical exercise in children with a normal intellectual level is more pronounced in relation to children with developmental disabilities. The significance of this research is that it provides information on the effects of physical exercise on the motor abilities of children with intellectual disabilities, provides information on the complexity of the approach to planning and organizing physical activity for the development of motor skills of children with diagnosed intellectual disabilities.
Public education recurrent expenditure and productivity in the manufacturing sector in Nigeria
Authors: Ogunjobi Festus , Odusanya Ibrahim , George Emmanuel
Published: April 2024

The debate on whether governments should increase their human capital investment is a popular topic within the realm of economics. This research seeks to solve this issue by looking into the importance of productivity in the manufacturing output as well as the function of productive expenditure. The study examines how the recurrent expenditure of public education in Nigeria between 1981 and 2019 affected manufacturing productivity. The study employed the Augmented Dickey-Fuller (ADF) unit root test and Auto Regressive Distributive Lags (ARDL) approach to analyse the relationship between public education recurrent expenditure, public health spending, trade openness, inflation rate, and the output of the manufacturing sector. The study reveals that public education recurrent expenditure is not significantly associated with manufacturing productivity. According to the study, the government should also concentrate on implementing policy frameworks aimed at improving manufacturing sector productivity by targeting public recurrent education spending.
Investigating the impact of IFRS 16 adoption in the Serbian hotel industry
Authors: Kljajić Maja , Mizdraković Vule
Published: April 2024

The effects of the implementation of IFRS 16 in the hotel industry, as one of the industries with the highest amounts of leased assets, is the primary focus of this paper. The International Accounting Standards Board adopted International Financial Reporting Standard 16 - Leases in January 2016, replacing International Accounting Standard 17 - Leases, for reporting periods starting on or after 1st January 2019. The updated regulations introduce different accounting models for lessees and lessors. The influence of IFRS 16 on a reporting entity is contingent on the quantity of existing operating lease agreements and differs across various industries. The research sample includes financial reports of 64 hotels per reporting period (2020-21), totaling 128 observation units. Data analysis included the application of statistical tests such as Kolmogorov-Smirnov test, Shapiro-Wilk test, and Wilcoxon signed-rank test. The research results indicate that aside from other events, the adoption of IFRS 16 had an impact on the financial performance of observed hotels and their key financial statement items.
The importance of the EU strategic approach for progress towards the sustainable development goals
Authors: Filipović Miljana , Radukić Snežana , Bačanek Viktor
Published: April 2024

Sustainable development is a process with continuous changes in the relationships between social, economic, and natural systems and processes. This is a long-term process and requires carefully guided and gradual development policies, as the complex challenges faced by humanity on a global level. Some of the contemporary challenges of sustainable development include: raising the level of ecological awareness of people, increasing responsibility, applying economic instruments and innovative solutions to environmental protection issues, etc. Therefore, a strategic approach to sustainable development and environmental protection is necessary. By studying initiatives and achieved results that the EU has aimed in the previous period, viewed through the prism of sustainability, climate action, and the fight against poverty, this paper highlights significant steps that the EU has taken in these key areas, but also key challenges in the future. The paper employs statistical data analysis from the Sustainable Development Goals Report to assess the ten-year progress of EU countries. The obtained results indicate that all EU-27 have shown an increase in the Sustainable Development Index in the period 2012/2022. Based on the analysis of achieved results, the aim of the paper is to highlight significant successes, but also to identify areas where additional efforts should be invested and attention should be directed in future EU sustainable initiatives.
Presentation of control algorithm for cooling system in business building
Authors: Osman Krešimir , Topčić Andrija , Perić Mato , Stamenković Dragi
Published: April 2024

This paper presents an algorithm for controlling and monitoring a cooling system in a business building by using the human-machine interface (HMI). The computer program for automatic control was implemented by using the ©SIEMENS TIA portal computer program. Based on the previously created hydraulic schema of the system, a ladder diagram was created, which was stored in the PLC with the aim of further automatic system control. In addition, a SCADA system was implemented to monitor all the processes of the cooling system under consideration. The control system is designed as a remote-control system with the possibility of adjusting and monitoring the system from a remote location via a computer or mobile device.
Numerical and multi-criteria energy flow analysis in the Kragujevac primary school
Authors: Nešović Aleksandar , Nikolić Danijela , Radojević Ana
Published: April 2024

In this investigation, a numerical and multi-criteria analysis of energy flow in the primary school in the city of Kragujevac is presented. A model of the existing school building with a district heating system was created. Alternative heating systems (the gas boiler, the pellet boiler, and the ground source heat pump) were analyzed to achieve energy savings. Different types of buildings are simulated with and without photovoltaic panels. Google SketchUp was used for building modeling, while EnergyPlus simulated buildings' energy behavior in real conditions. Results show that pellet boilers with photovoltaic panels can reduce primary energy by 89% and CO₂ emission by 87.55%. For the ground source heat pump with photovoltaic panels, the final energy saving is 77.83%, primary energy saving is 70.82%, and CO₂ reduction is 57.90%. Using numerical and multi-criteria analyses, the authors want to bring the existing public buildings closer to the zero-energy building concept and the city closer to the sustainable development concept.
Design and development of a cost efficiency robot arm with a PLC-based robot controller
Authors: Duy Cong
Published: April 2024

To develop a cost-efficient robot arm for a typical pick and place application that can applied in industry, this paper deployed a programmable logic controller (PLC) to control the rotation motion of the robot joints. The main tasks of the PLC controller are to calculate the kinematics, create high-speed pulse outputs for stepper motors, and implement sequence operations for a certain application. Functions are written into subprogram segments. When needed, the main program only turns on the corresponding flag for executing the subprogram. Using the pre-written subprograms, a logical sequence to implement the Pick and Place application is easily implemented and described in this paper. The PLC program is developed to control a SCARA robot with three rotation joins. Stepper motors drive the robot joints. The Delta DVPSV2 PLC is utilized to design the robot controller. This PLC series has four high-speed pulse output pins, which is suitable for this project. Synchronous motion of stepper motors is easily performed using high-speed pulse output commands built into the PLC program. Experimental results of robot arm control have demonstrated the efficiency and accuracy of the developed program. The robot arm's forward and inverse kinematics problems are verified using the simulator on the software. The robot's joints move synchronously as required to perform pick-and-place applications.
Examining and optimizing the weld area and mechanical performance of thermoplastic parts manufactured by additive manufacturing and welded by friction stir welding
Authors: Güden Şehmus , Motorcu Ali , Yazıcı Murat
Published: April 2024

This study presents an experimental investigation into the weldability of ABS M30 (acrylonitrile butadiene styrene) plates produced by Additive Manufacturing (AM) using Friction Stir Welding (FSW). The effects of FSW process parameters on the yield stress and their optimal levels were determined using the Taguchi method. The optimal welding parameters were found to be a 16 mm tool shoulder diameter, 800 rpm tool rotation speed, and 10 mm/min traverse speed. The weld area of each sample welded using FSW was examined at a macroscopic level. The direction of tool rotation significantly affects the quality and strength of the FSW. When the FSW was performed with a clockwise rotation of the welding tool, a perfect weld could not be achieved. The tunnel effect resulted in gaps in the weld area of the samples at high rotation speeds. Differences were observed in the density between the weld area of the samples and the main parts.
Investigation on manufacturing of small-sized stepped rotor wheel by engraving milling process
Authors: Chaubey Sujeet , Gupta Kapil
Published: April 2024

This study aims to explore the potential of the engraving milling process to manufacture 3D structures and layouts like rotor wheels. An experimental study was carried out to manufacture a stepped rotor wheel from EN8 steel blank using a computer numeric control (CNC) engraving milling machine tool. The impact of variable parameters, namely rotational speed (SR), feed (f), and plunge feed (Pf), on maximum roughness depth (Rt) and material removal rate (MRR) was determined through a total of fourteen tests, each with two replications based on Box-Behnken design (BBD) of the response surface methodology (RSM). The best variable combination was found using desirability functional analysis (DFA) with goals of minimizing Rt and maximizing the MRR. The best values achieved at the optimal combination of variable parameters were 2.95 µm as Rt and 43.45 mm³/min as MRR. Micrographs of the rotor wheel blades and cutting tool supported the findings.
Experimental evaluation of biolubricant with additive nanoparticle calcium carbonate (CaCO₃) from scallop shell waste as cutting fluids using minimum quantity lubrication (MQL) in CNC milling process
Authors: Puspitasari Poppy , Pramono D.D. , Habiby M.N.A. , Prabowo P , Jaelani A. , Abdullah M.I.H.C. , Suyetno A.
Published: April 2024

Nano-cutting fluid sprayed using the minimum quantity lubricant (MQL) method is one example of a green manufacturing process. Meanwhile, vegetable oil is an appropriate lubricating base oil as it offers very high lubricating performance and environmental friendliness. Further, CaCO₃ nanoparticles are popular for their capacity to improve lubrication properties and performance. However, the optimum impact of utilizing different types of vegetable oil remains inadequately investigated. Therefore, this study aims to analyze the effect of CaCO₃ nanoparticles on the performance of cutting fluid, specifically on the thermophysical, rheological, and tribological properties in the CNC milling process of AISI 1045 Steel material. The nano-cutting fluid was prepared using different vegetable oils (canola, corn, soybean) added with CaCO₃ nanoparticles with a mass concentration of 0.15%. The results showed that the thermophysical properties, including density and viscosity, were highest when using canola oil, and the addition of CaCO₃ to all samples did not significantly affect thermal conductivity. Meanwhile, for the rheological properties, we observed Newtonian for all cutting fluid samples. For tribological properties, canola, and corn oil were better for obtaining a minimum Ra value, while soyabean oil was more effective in reducing cutting temperature. Based on the results of tool wear calculations, each oil presents the best performance in reducing wear, especially with the addition of CaCO₃. For chip formation, on average, the samples produce irregular tooth morphology with C-type, comma, and elongation shapes. Meanwhile, the resulting chip color was dark purple, which changed to dark brown and light brown, then turned silvery white due to wear and tear on the different sides of the chisel.
Selection of engine oils with tribological examinations applicable to specially operated diesel engines
Authors: Kuti Rajmund , Könczöl F. , Csapó L. , Papp Cs. , Földi L. , Tóth Á.D.
Published: April 2024

In recent times, many specially engineered diesel engines built in the 1980s are still used in different areas, for which the suggested engine oils are no longer available. These engines are operated reliably in military combat vehicles, electricity generators, and tracked machinery, thus it is essential to examine what engine oils are suitable for their operating conditions and may be used as their engine oil. The aim of our research is to conduct the tribological examination of an oil sample taken from a V-6M type naturally aspirated Diesel engine and the oil prescribed by the manufacturer. After evaluating the results, we determine which type of oil is applicable in the engine to achieve safe operation and a long lifetime.
Evaluation of technical and economic aspects of replacing mechanical transport with pneumatic
Authors: Oluški Nikola , Popović Petar , Vukić Marko , Živkov Andreja , Bukurov Maša
Published: April 2024

This paper explores the cost-effectiveness of pneumatic transport of wheat compared to mechanical transport on agricultural premises. A comparison was made with the existing mechanical transporter at the "Aleksić" agricultural farm in Novi Slankamen. The chosen method, flying pneumatic transport, underwent experimental capacity determination using volumetric methods for pneumatic transport calculations. With an initial wheat mass flow of 4.8 kg/s, calculations aimed to ascertain the motor power required to operate the blower, factoring in pressure drop in the pipeline. Results indicated a 4230 Pa pressure drop and a 2.12 kW blower motor power. Economic analysis revealed less favorable outcomes, with a payback period of 10500 working hours or 436 days due to seasonal transportation needs. Performance analysis suggested over 6000 trailers would be required for investment repayment. Notably , the analysis solely focused on wheat transport, overlooking the potential for service work or modern pneumatic transport solutions , underscoring the necessity for further research for more relevant conclusions.
An evaluation of the fundamental factors influencing the characteristics of mycelium-based materials: A review
Authors: Krsmanović Nenad , Mišković Jovana , Novaković Aleksandra , Karaman Maja
Published: April 2024

The mycelium-based materials (MBMs) are produced by growing the vegetative part of the mushroom-forming fungi-from Dikarya group: phylum Basidiomycota and Ascomycota, on different organic substrates, mostly due to containing important mycelium characteristics: septa and anastomosis. Moreover, function of these composites can be further tuned by controlling the species of fungus, the growing conditions, and the processing methods to meet a specific mechanical requirement in their further applications. The material formed after full colonization of the substrate, needs to be exposed to dry heating in order to remove the moisture content and to inactivate the mycelium, giving us the lightweight, and biodegradable material with great potential to replace fossil-based and synthetic materials such as polyurethane and polystyrene. Their low carbon footprint, low energy and processing cost, biodegradability, low heat conductivity, high acoustic absorption, and fire safety qualities were some of the main characteristics that encouraged the use of mycelium based composites (MBCs) in the construction and building sector, especially as paneling, insulation, and furniture materials. Since mycelium products are quite new and there is limited industry peer-reviewed testing data available, there is a need for standardized mechanical properties, universal testing requirements and published standards (ISO, ASTM) to ensure that qualification and testing programs can be developed to support the manufacture and use of MBCs.
Implementation of food safety policy in the European Union: Guidance, variety, and resolution of challenges
Authors: Puvača Nikola , Vapa Bojan
Published: April 2024

The paper explores the intricate landscape of implementing food safety policies within the European Union (EU) context. Through an examination of key themes, including discretion and enforcement of policies, the EU's problem-resolution strategies, and the concept of individualization that surpasses mere adherence to laws, the paper sheds light on the complexities and nuances inherent in ensuring food safety across the diverse member states. The paper scrutinizes the role of discretion in the enforcement of food safety policies within the EU. It delves into how regulatory bodies exercise judgment in interpreting and applying policies, taking into account the varying contexts and challenges faced by member states. The discussion highlights the need for a balanced approach that considers both uniformity in enforcement and flexibility to address specific regional or sectoral requirements. Further, the paper focuses on the EU's problem-resolution strategies concerning food safety policies. It explores the mechanisms in place for identifying and addressing challenges that arise during the implementation phase. This includes an analysis of coordination among member states, collaboration with stakeholders, and the role of regulatory bodies in mitigating issues and fostering a harmonized approach to problem-solving. In the end, the paper introduces the concept of individualization, emphasizing how a diverse range of policies and practices exists beyond mere adherence to overarching laws. This section explores the unique approaches taken by member states in tailoring food safety policies to suit their specific circumstances. It investigates the benefits and potential challenges associated with such individualization, considering its impact on overall policy effectiveness and coherence.
Influence of bio-climatic conditions of Mount Zlatibor on health tourism
Authors: Stojićević Goran , Ivanović Sunčica
Published: April 2024

Introduction: Bioclimatic conditions are of great importance for all forms of tourism, especially for health tourism, as they should encompass therapeutic and prophylactic characteristics. Over the last three decades, tourism in Zlatibor has been continuously growing in terms of tourist numbers and the development of tourist infrastructure. This paper presents the bioclimatic and climatic conditions on Mount Zlatibor from the perspective of their impact on tourism. More precisely, it examines their influence on tourist movements on this mountain and their significance for the development of health tourism. Materials and Methods: Research data were obtained through the analysis of temperature, air pressure, humidity, insolation, and precipitation levels. Based on these data, physiological equivalent temperature (PET) values and the universal thermal climate index (UTCI) were calculated. Results: The obtained results of bioclimatic indices (PET and UTCI) indicate potential stress due to extreme cold in the mornings and evenings from late October to the second decade of March. Pleasant warmth prevails during the summer months in the mornings and evenings. In terms of health, the climate of Zlatibor is suitable for maintaining health, as well as for treating various lung diseases, anemia, heart and blood vessel disorders, especially thyroid disorders. Bioclimatic conditions closely correlate with tourist movements on Zlatibor, as evidenced by climate data and the results obtained from PET and UTCI calculations. Conclusion: Comparing tourist numbers over a five-year period reveals that bioclimatic conditions significantly influence Zlatibor's peak tourist season, which occurs during the summer months. This period offers the most favorable bioclimatic conditions, attracting the highest number of visitors to the mountain, especially those seeking health and recreational activities.
Minimum wage: The rule instead of the exception in the labor market
Authors: Radovanović Vladimir , Radovanović Jelena
Published: April 2024

The issue of the minimum wage has been attracting attention for many years, not only from experts, but also from the general public. Determining the minimum wage in every country, including Serbia, aims to establish minimum standards for personal income and combat poverty. The basic feature of the minimum wage is that it is a temporary measure, lasting up to 6 months, as a response to an employer's poor financial performance, and as such it represents an extraordinary measure, which should be abolished upon returning to the normal economic conditions. Upon resuming normal business operations, the employer is required to compensate employees for the shortfall, ensuring they receive their contracted salary in full. However, instead of the minimum wage being an exception, used only in extraordinary circumstances, it has now become commonplace in the labor market, challenging the original concept of the minimum wage and raising questions about its effectiveness. This paper aims to examine the concept of wage and minimum wage in Serbia, along with its practical implications in the domestic labor market.
Restrictive agreements as a form of competition violation in Serbia: Theory and practice
Authors: Todorović Andreja , Blagojević Bojan , Popović Andrija
Published: April 2024

Restrictive agreements are agreements among market participants that significantly restrict, distort or prevent competition. This paper aims to elucidate the concept of restrictive agreements as a form of competition infringement within the scientific, professional and business-legal communities. The paper systematizes the definitions of this concept and examines the relevant laws and regulations governing it. Additionally, the paper will analyze and evaluate the efficacy of the Commission for the Protection of Competition, highlighting both its strengths and weaknesses in making decisions on the prevention of monopolies. Through an analysis of the commission's decisions concerning companies operating within the territory of the Republic of Serbia, this paper identifies challenges and proposes solutions to enhance the Commission's effectiveness.
Performance evaluation of Veri-Q red haemoglobin meter for point-of-care haemoglobin and packed cell volume estimations
Authors: Apollos Vivian , Jacob Ranson , Jeremiah Zaccheaus
Published: April 2024

Abstract: Introduction: Haemoglobin (Hb) and packed cell volume (PCV) are tests used in the assessment of anaemia. The Veri-Q haemoglobin meter is a new device in the point-of-care market used for the quantitative measurement of haemoglobin and packed cell volume. This study aimed to evaluate the performance of the Veri-Q haemoglobin meter for the assessment of haemoglobin and packed cell volume. Materials and Methods: Haemoglobin and packed cell volume estimations of one hundred and eleven participants were determined using the Veri-Q Red haemoglobin meter and statistically compared with those obtained from the conventional method (gold standard). Results: One hundred and eleven undergraduate students participated in this study, of whom 72 (64.9%) were females and 39 (35.1%) were males. The mean haemoglobin values calculated using the Veri-Q haemoglobin meter (11.97 ± 1.95 g/dl) were significantly lower than the values obtained with the conventional method (12.35 ± 1.66 g/dl) (t = 4.7549; p = 0.0001). Similar results were obtained with packed cell volume estimation. The performance indices of the Veri-Q haemoglobin meter were as follows: sensitivity (75.41% for Hb and 77.05% for PCV), specificity (28.0% for Hb and PCV), positive predictive value (PPV) (56.1% for Hb and 56.63% for PCV), negative predictive value (48.28% for Hb and 50% for PCV). The prevalence of anaemia in this study was 54.05%. Positive Likelihood Ratio (1.05 for Hb and 1.07 for PCV), Negative Likelihood Ratio (0.88 for Hb and 0.82 for PCV), Accuracy (54.05% for Hb and 54.95% for PCV). The Receiver Operative Characteristics (ROC) Area Under Curve (AUC) was 0.996 for Hb and 0.984 for PCV. A significant but weak positive correlation was found to exist between haemoglobin estimations using conventional and Veri-Q methods (r = 0.3013, P = 0.01); PCV (R = 0.2512, P = 0.07). The sensitivity of the device can be described as moderate while the specificity is low. The accuracy of the device is just average. Conclusion: The Veri-Q haemoglobin meter demonstrates an average level of accuracy and a high AUC, making it potentially useful for field epidemiological studies.
Adaptabilnost, stabilnost i visok prinos - NS hibridi suncokreta nove generacije za nove izazove
Authors: Krstić Miloš , Ćuk Nemanja , Babec Brankica , Jocić Siniša , Cvejić Sandra , Ovuka Jelena , Miladinović Dragana , Jocković Milan , Jocković Jelena , Hladni Nada , Grahovac Nada , Dušanić Nenad , Radić Velimir , Balalić Igor , Gvozdenac Sonja , Dedić Boško , Ostojić Branislav , Jokić Goran , Butaš Daliborka , Radeka Ilija , Klisurić Nedeljko , Miklič Vladimir
Published: April 2024

Suncokret je sve više izložen negativnim uticajima klimatskih promena, posebno visokim temperaturama i sušnim periodima, što neretko uzrokuje značajne varijacije i smanjenje prinosa semena. S obzirom na to da se klimatske promene ne mogu zaustaviti, neophodno je identifikovati promene u biljci koje omogućavaju prilagođavanje na ekstremne klimatske uslove i primeniti ova saznanja u procesu oplemenjivanja. Stvaranje novih genotipova tolerantnih na sušu i sve vrste stresa je prioritet u sadašnjem ali i budućem procesu oplemenjivanja biljaka. Postizanje ovog cilja zahteva ispitivanje performansi hibrida na više lokaliteta i u različitim godinama, osiguravajući tako pouzdane rezultate i prilagodljivost u promenljivim okolnostima. Institut za ratarstvo i povrtarstvo, Institut od nacionalnog značaja za Republiku Srbiju, Novi Sad sprovodi svake godine multi lokacijske mikro i proizvodne ogleda širom zemlje, testirajući i adaptabilnost i stabilnost novih i već raširenih hibrida suncokreta u različitim mikroklimatskim uslovima. Tokom 2023. godine hibridi nove generacije, odnosno dva konvencionalna hibrida (NS Kruna i NS Ronin) i dva Express (SUMO) hibrida (NS H 8002 i NS H 8005) posejani su u osam regiona tj. okruga, kod četiri poljoprivredna proizvođača u svakom okrugu. Imajući u vidu da je u 2023. godini, prosečan prinos semena suncokreta u Republici Srbiji prema procenama iznosio 2,7 -2,9 t/ha, a kada uporedimo ovu vrednost sa prosečnim prinosima u mreži proizvodnih ogleda osam okruga, jasno se ističe visok kvalitet NS hibrida suncokreta nove generacije. NS Ronin je ostvario izuzetan prinos od 4,2 t/ha, prati ga NS Kruna sa 4 t/ha, dok su SUMO hibridi NS H 8002 i NS H 8005 postigli prinose od 3,7 t/ha i 3,8 t/ha. Rezultati AMMI analize pokazuju da je za prinos semena tokom 2023. godine u prošeku kroz sve okruge najstabilniji bio hibrid NS H 8002, sa vrednošću IPČ1 najbližoj nuli. Hibridi NS Kruna, NS Ronin i NS H 8005 su pokazali manju stabilnost, jer su bili udaljeniji od linije stabilnosti u odnosu na hibrid NS H 8002, ali su ovi hibridi u prošeku ostvarili veće prinose u svim okruzima. Ovi rezultati potvrđuju da novosadski hibridi nove generacije poseduju izuzetnu adaptabilnost, stabilnost, a pored toga i visok potencijal za prinos u različitim agroekološkim uslovima širom Republike Srbije.
Criteria for implementing the hybrid 3D cadastre model in Serbia
Authors: Višnjevac Nenad , Šoškić Mladen , Mihajlović Rajica
Published: April 2024

3D cadastre as a modern approach to the development of the cadastral information system brings many advantages and solves the difficulties that the current cadastral system faces when it comes to registration and visualization of complex 3D situations. Accordingly, transitioning to a 3D cadastral system requires significantly more resources because it is necessary to collect, process, store, maintain, and distribute data in three dimensions. To open a more accessible path to implementing a 3D cadastre, a hybrid model is one of the proposed approaches. This implies that current 2D cadastral data are used as much as possible, and that in locations where it is not possible to unambiguously present properties and boundaries, a 3D approach is used. In this paper, the basic criteria defining when a 3D approach is necessary within the hybrid model are discussed and presented. A basic assessment of the relationship between 2D and 3D approaches is provided within a case study.
Managing Inherent IT Business Risk against Cyber Threats: a Decision Analysis Case Study of an Oil and Gas Company
Authors: Putra I Wayan Novit Marhaendra , Wasesa Meditya
Published: April 2024

XYZ, an anonymized oil and gas company, aims to enhance cyber resilience by strategically managing inherent risk profiles in cybersecurity, aligned with business needs and stakeholder expectations. This research addresses challenges including Information Security Control determination, proficiency improvement in risk management, and ISMS preparedness. Additionally, it tackles procurement strategy for Security Operations Control across XYZ Group, operating under PSC Gross Split, Cost Recovery, and Non-PSC statuses. Utilizing diverse frameworks such as problem tree analysis, stakeholders’ power-interest matrix, MITRE ATT&CK, NIST 800-53, COBIT 2019, ISO 27005:2022, KAMI 5.0, and SMART, data analysis includes risk documents, interviews, and cyber-attack data. The research establishes effective IS Control for risk mitigation, readiness for Information Security Management System ISMS implementation, strategic programs enhancing risk management capability, and refined Security Operations Control procurement. These outcomes, incorporated into a collaborative contract structure, significantly mitigate cyber threats and potential impacts, such as disruptions to operations, revenue reduction, increased costs, data theft, and non-compliance.
HOẠT TÍNH ĐỐI KHÁNG VỚI VI SINH VẬT GÂY BỆNH CHO NGƯỜI CỦA CHỦNG XẠ KHUẨN Streptomyces MIP_GN36 PHÂN LẬP TỪ ĐẤT VÙNG RỄ CÂY GỪNG
Authors: Chu Thanh Bình
Published: April 2024

Mục tiêu: Sàng lọc chủng xạ khuẩn từ đất vùng rễ cây Gừng (Zingiber officinale) nhằm tìm kiếm các chất có hoạt tính kháng vi khuẩn, kháng nấm và hoạt tính sinh học tiềm năng, làm cơ sở cho những nghiên cứu tiếp theo.
Đối tượng, phương pháp: Thử nghiệm hoạt tính đối kháng của 8 chủng xạ khuẩn (Streptomyces MIP_GN34, GN35, GN36, GN37, GN38, GN39, GN40, GN41) phân lập từ đất vùng rễ cây Gừng (khu vực huyện Khoái Châu, tỉnh Hưng Yên) với 2 chủng vi sinh vật gây bệnh (Bacillus cereus ATCC11778 và Candida albican ATCC12031) bằng phương pháp khuếch tán đĩa thạch.
Kết quả: Streptomyces MIP_GN36 có hoạt tính đối kháng với 2 chủng vi sinh vật gây bệnh Bacillus cereus ATCC11778 và Candida albican ATCC12031 với đường kính vòng vô khuẩn lần lượt là 13 mm và 10,5 mm ± 2 mm, có khả năng sinh trưởng ở dải nhiệt độ từ 25-50ºC, pH 6,5-7,5. Trên môi trường ISP4, khuẩn lạc có màu trắng ngà, bào tử xuất hiện sau 5-7 ngày nuôi cấy. MIP_GN36 sử dụng các nguồn carbon là tinh bột tan, rỉ đường; nguồn ni tơ là cao nấm men, pepton. Khảo sát các cụm gen liên quan đến quá trình sinh tổng hợp kháng sinh, Streptomyces MIP_GN36 mang gen mã hóa enzyme PKSII. Xác định đặc điểm hình thái kết hợp với trình tự 16S rRNA, MIP_GN36 có độ tương đồng 99,54% với loài Streptomyces thermocarboxydus trên Genbank, do đó được đặt tên là Streptomyces thermocarboxydus MIP_GN36.
ĐÁNH GIÁ TÁC DỤNG ĐIỀU TRỊ VIÊM GÂN CƠ NHỊ ĐẦU CÁNH TAY CỦA CHẾ PHẤM “HOÀN KHỚP”
Authors: Hoàng Thị Kim Mười  , Phạm Xuân Phong  , Đặng Hồng Hoa
Published: April 2024

Mục tiêu: Đánh giá tác dụng điều trị viêm gân cơ nhị đầu cánh tay của chế phẩm “Hoàn khớp”.
Đối tượng, phương pháp: Nghiên cứu tiến cứu, can thiệp lâm sàng có đối chứng, so sánh trước và sau điều trị trên 86 bệnh nhân viêm gân cơ nhị đầu cánh tay (gồm 43 bệnh nhân nhóm can thiệp: uống Mobic kết hợp với “Hoàn khớp” và 43 bệnh nhân nhóm chứng uống Mobic), điều trị  tại Viện Y học cổ truyền Quân đội, từ tháng 11/2020 đến tháng 11/2021. Đánh giá mức độ đau theo thang điểm VAS. Đánh giá kết quả điều trị theo thang điểm SPADI.
Kết quả: Sau 4 tuần điều trị, mức độ đau của bệnh nhân cả 2 nhóm đều giảm so với trước điều trị, khác biệt với p < 0,05; nhóm uống “Hoàn khớp” giảm 3,49 ± 1,32 điểm VAS, nhóm chứng giảm 2,58 ± 1,75 điểm VAS, khác biệt giữa 2 nhóm có ý nghĩa thống kê với p < 0,05. Điểm SPADI của 2 nhóm đều giảm có ý nghĩa thống kê so với trước điều trị (p < 0,05). Sau điều trị, điểm SPADI của nhóm can thiệp (23,02 ± 5,84 điểm) thấp hơn so với nhóm chứng (27,91 ± 7,65 điểm), khác biệt với p < 0,05. Góc vận động khớp vai cả 2 nhóm được cải thiện hơn so với trước điều trị (p < 0,05). Trong đó, góc vận động của nhóm can thiệp tăng nhiều hơn nhóm chứng (25,34 ± 13,73º so với 12,09 ± 20,96º), với p < 0,05.
Analysis of the Snowball Throwing Learning Model Assisted by Canva Media on Social Studies Learning Outcomes
Authors: Erni Erni , Haliadi Haliadi , Hasdin Hasdin
Published: April 2024

Education in the era of globalization   This   is   very important thing   in prepare Quality Human Resources​​ To use ensure sustainability development something nation. Formulation problem How application of the Snowball Throwing learning model, How How to use Canva media results Study students ' eyes social studies lesson in class IV, Is it There is the influence of the Snowball Throwing learning model assisted by Canva media on results studying social studies in Class IV of SDN 2 Bahonsuai. Research purposes Analyze the influence of the assisted Snowball Throwing learning model canva to results Study student eye social studies lessons in class IV of SDN 2 Bahonsuai. Types of research This is quantitative. Study quantitative can interpreted as method research based on philosophy​ positivism, used For research on populations or sample certain. Population and sample This aimed at 2 different classes as object study experiment. Research results Reliability test results refers to the extent of a test can produce consistent and reliable results​​​ from time to time.
The Influence of the Picture and Picture Learning Model Assisted by Audio Visual Media on Students' Social Sciences Learning Outcomes
Authors: Indarsi Hilda , Lukman Lukman , Jamaludin Jamaludin
Published: April 2024

Education is capable create source Power more human​ quality Because own good knowledge and skills.​ The picture and picture learning model is a learning model that uses picture as a learning medium supported by audio-visual media and will support enhancement results Study student. Formulation problem is There is the influence of the picture and picture model assisted by audio visual media on  results studying social studies in class V at SDN Powaru. Research purposes Know the influence of the picture and picture model assisted by audio visual media on  results studying social studies in class V at SDN Powaru. Type of research used  in study This is type study quantitative. Method experiment is method study quantitative used​ For know the influence of the independent variable ( treatment ) on the dependent variable ( outcome ) in controlled conditions.​ A form of pre- experimental design was used is a one-group pretest- posttest design. Research result  Implementation learning using the picture and picture learning model assisted by audio-visual media. Before start study first stage​ a pretest was carried out in the form of tests on students class V at SDN Powaru District​ South Bungku District. Morowali Central Sulawesi Province. Pretest was carried out to results learn social studies students class V before they given treatment form picture and picture learning assisted by audio visual media.
Unfree, Unfair, and Insecure
Authors: Kars Kaynar Ayşegül
Published: April 2024

It is essential to recognize that elections encompass more than just the act of casting votes on election day.
Analysis of Brayton Cycle Efficiency at 100 MW Load Before and After Overhaul of Unit 1 Block 1 At PLTGU PT. PLN Nusantara Power Up Gresik
Authors: Ridwan Muhammad , Wibisono Fahri
Published: April 2024

Electricity is one of the most important needs in everyday life due to technological advances. So various efforts are needed to increase electricity production, one way is to build a power plant that can produce productive electricity so that this happens, one way to determine electricity productivity is the value of cycle efficiency. If the value of the cycle efficiency is higher in a generator, then the PLTG performance will be maximized. And if the cycle efficiency value gets smaller, it can be said that the PLTG's performance is not good. Therefore, to maintain PLTG performance, it is necessary to carry out an overhaul to maintain optimal PLTG performance. In this study using cycle efficiency to determine the increase in efficiency before and after overhaul at a load of 100 MW and the causes, after analyzing the efficiency of the brayton cycle increased from 41% to 42%, the cause was a decrease in turbine efficiency from 74 to 91% and compressor efficiency from 73 to 82% after overhaul the increase affected fuel consumption so that the requirement of kcal/kwh decreased to 3196.4 kcal/ Kwh
TOLERANSI ANTAR UMAT BERAGAMA DI SMA NEGERI 2 BATU
Authors: Hafidah Putri Pangestu  , Nur Wahyu Rochmadi
Published: April 2024

This research aims to describe the practice of tolerance in religious life at school. This research uses descriptive qualitative method. Data sources: (1) PPKn teachers, PAI teachers, Buddhism teachers, student council coordinators and leaders, and students; (2) phenomena, religious activities that involve inter-religious cooperation; (3) documents. Data collection through observation, interviews, documentation. Data analysis used interactive models and triangulation of data sources. The results showed that: 1) the school has a BTQ programme, Friday prayers, princesses, while non-Muslims carry out their activities and celebrate religious holidays where all students and teachers work together to prepare activities; 2) there are individuals who disagree with interfaith activities and the school does not have a place of worship for non-Muslims; 3) the school mediates with individuals and student council coordinators and allows students and teachers to carry out religious activities inside and outside the school. Recommend that the programme be implemented for all religious communities in the school