bluuebunny/crossref_metadata_2025 huggingface dataset:
Distribution and quantitative abundance of weedy sunflower Helianthus annuus L. in Serbia
Authors: Stojićević Darko , Vrbničanin Sava
Published: September 2022

The Helianthus annuus L. species which appears as a weedy sunflower differs from the sunflower crop in height, pronounced branching, phenotypic variability, presence of anthocyan pigment, numerous small heads, relatively small and morphologically variable seeds (shape, color, motlling), dormancy and seed brittleness, etc. Weedy sunflover (WS) has been spreading for more than two decades on crop and non-cropland in the area with intensive sunflower crop production in Serbia, where it causes large yield losses in many crops (row crops and cereals). Bearing this in mind, as well as the fact that there have been confirmed cases of reduced herbicide efficacy on WS, the aim of this study was to determine the distribution and define the population size of WS in the whole territory of Serbia. During a three year period, in the region with intensive sunflower crop production (Banat, Bačka, Srem, Stig), the present WS populations were monitored and the quantitative and qualitative traits of their populations were assessed. A scale from 1-4 was used to estimate the number of plants in the population (1 - species cover up to 5% of the surveyed area, 2 - species cover 10-15% of the surveyed area, 3 - species cover 25-50% of the surveyed area, and 4 - species cover over 50% of the surveyed area). Over 200 populations of WS have been recorded in the whole territory of Serbia, and this is shown on a UTM map of 10x10 km scale. The largest WS populations (5 to 15 ha), with the highest number of plants (> 100,000) and average density (about 5 m-2 plants) were recorded in the site of Padinska Skela (in crop and non-croplands), Zbeg (predominantly on non-cropland) and Surčin-Galovica (predominantly in cropland). Based of the phenotypic diversity/discrimination traits, the population from Stari Žednik was the most similar to sunflower crop [with the central head and apical branching, the lowest number of heads compared with other WS populations (18.5 plants-1, while some populations had up to 59.4 heads plant-1) and the largest head size (8.1 cm in diameter)]. These results should be a guide for the farmers when planning crop planting, to undertake the best measures to control WS within the concept of antiresistance strategy, given the confirmed cases of reduced susceptibility of this weed to herbicides, as well as the obligation to eliminate it on non-cropland, as its main corridors of expansion are areas along roads and canals, field crop margines, lost cropland, etc.
The effect of maleic hydrazide on onion sprouting during and after the storage period
Authors: Gajić-Umiljendić Jelena , Sarić-Krsmanović Marija , Pavlović Danijela , Šantrić Ljiljana , Radivojević Ljiljana
Published: September 2022

Testing of the effects of maleic hydrazide (MH) and storage conditions on onion sprouting was conducted during the seasons of 2018-2019 and 2019-2020. The trials were set up in the locality of Gospođinci. Maleic hydrazide was applied 21 days before the harvest using the commercial plant protection product Royal MH 30, in the quantity of 12.5 l -ha . During the storage period onion bulbs weight and number of sprouted bulbs, as well as the weight and length of sprouts per bilb were recorded each month (assessments I-VIII). Also, the loss of onion bulb weight compared to the beginning of the storage period was assessed at the end of the trial period. In order to determine sprouting level of onion bulbs after leaving the storage facility, the number of visibly sprouted onion bulbs was recorded every 10 days for a period of six weeks. Length of the sprout was measured on sprouted onion bulbs, while onion bulbs with no visible sprouts were cut in half at the end of the experiment, in order to determine the sprout growth inside the bulb. Under the MH treatment, depending on the trial year, weight of the treated onion bulbs was lower by 9.5-10.6%, compared to their pre-storage weight. Efficacy of MH in preventing onion sprouting was also confirmed with a significantly lower number of sprouted bulbs, as well the sprout length and weight parameters. Furthermore, after leaving the storage facilities (constant temperature 18-20oC) the total percentage of sprouted bulbs in the control was 62-68%, while in the MH treatment it was 10-16%. No internal sprouts were recorded in 53.3-54.8% of the treated onion bulbs, while in the control group only 10.5-18.8% of cut bulbs did not have internal sprouts.
Hundred years of loess research in Zemun (Serbia): From an expert note to new challenges in geology
Authors: Rundić Ljupko
Published: September 2022

In remembrance of the 100 th anniversary of the arrival of geologist and university professor Vladimir Laskarev in Serbia and the beginning of scientific research of loess sections in Zemun, the author's intention is to point out the importance of knowledge of geological history and tradition, but also the actual nature of the study of loess-paleosol deposits. This is especially important at the time when numerous projects and teams of researchers in Serbia and the world are dealing with this issue. Today as well as in Laskarev's time, they all have the same task: to qualitatively and quantitatively explain natural processes and their consequences, and to point out significant oscillations in temperature and climatic fluctuations during the Pleistocene.
Modelling the surface roughness of steel after laser hardening by using 2D visibility network, convolutional neural networks and genetic programming
Authors: Babič M. , Wangyao P. , Šter B. , Marinković D. , Fragassa Cristiano
Published: September 2022

The surface characterization of materials after Robot Laser Hardening (RLH) is a technically demanding procedure. RLH is commonly used to harden parts, especially when subject to wear. By changing their surface properties, this treatment can offer several benefits such as lower costs for additional machining, no use of cooling agents or chemicals, high flexibility, local hardening, minimal deformation, high accuracy, and automated and integrated process in the production process. However, the surface roughness strongly depends on the heat treatment and parameters used in the process. This article used a network theory approach (i.e., the visibility network in 2D space) to analyze the surface roughness of tool steel EN100083-1 upon RLH. Specifically, two intelligent methods were merged in this investigation. Firstly, a genetic algorithm was applied to derive a relationship between the parameters of the robot laser cell and topological surface properties. Furthermore, convolutional neural networks allowed the assessment of surface roughness based on 2D photographic images.
Vertical wind speed extrapolation using regularized extreme learning machine
Authors: Nuha H. , Mohandes M. , Rehman S. , A-Shaikhi Ali
Published: September 2022

The cost of measuring wind speed (WS) increases significantly with mast heights. Therefore, it is required to have a method to estimate WS at hub height without the need to use measuring masts. This paper examines using the Regularized Extreme Learning Machine (RELM) to extrapolate WS at higher altitudes based on measurements at lower heights. The RELM uses measured WS at heights 10-40 m to estimate WS at 50 m. The estimation results of 50 m are further used along with the measured WS at 10-40 to estimate WS at 60 m. This procedure continues until the estimation of 180 m. The RELM's performance is compared with the regression tree (RegTree) method and the standard 1/7 Power Law. The proposed algorithm provides an economical method to find wind speed at hub height and, consequently, the potential wind energy that can be generated from turbines installed at hub height based on measurements taken at much lower heights. Moreover, these methods' extrapolated values are compared with the actual measured values using the LiDAR system. The mean absolute percentage error (MAPE) between extrapolated and measured WS at the height of 180 m using measurements at the height of 10-40 m using RELM, RegTree, 1/7 Power Law, and Power Law with adaptive coefficients is 13.36%, 16.76%, 33.50%, and 15.73%, respectively.
A computational methodology for synthesis of epicyclic gear transmission system configurations with multiple planetary gear trains
Authors: Hariharan Manikandan , Kaup Vijayananda , Babu Harish
Published: September 2022

Epicyclic Gear Transmission Systems (EGTs) find a wide variety of applications in automatic transmission systems due to their flexibility to deliver a variety of speed ratios. The design of EGT involves the enumeration of all possible layouts, typically called structural synthesis. Thus, the structural synthesis of an EGT consists of defining a topology for EGT with coupled planetary gear trains (PGTs) along with constraining elements such as connections, brakes, and clutches while delivering a definite transmission ratio between the input and output shafts. Given the number of PGTs, permanent connection, clutches, and brakes, the methodology systematically introduces these elements of PGTs to deliver the given number of distinct speed ratios. Determining the number of distinct speed ratios for a given combination of brakes and clutches has been expressed as a transformation of a graph representation of the EGT layout. A computer program has been developed for the structural synthesis of EGTs and validated against the 3 epicyclic, 6-speed EGT systems. The viability aspects of the synthesized structure are carried out. Also, an isomorphism test is addressed in the synthesis methodology to detect unique EGT structures at every synthesis stage.
Timing chain wear investigation methods: Review
Authors: Paulovics László , Rohde-Brandenburger Jan , Tóth-Nagy Csaba
Published: September 2022

Several methods are used for investigating timing chain wear, from fired engine dynamometer tests through tribological model tests to simulations. Research over the past decade has shown that component or tribometer tests can replace expensive engine dynamometer tests in many cases. Simulation methods can further reduce the cost and time of development. Simulation models require experimentally defined input parameters; therefore, experiment-based methods cannot be completely avoided. However, a comprehensive comparison or validation of the various experimental and simulation techniques is difficult, as the literature on the topic is relatively scarce. This study aims to give a systematic comparison of the results of several investigation methods of timing chain wear, supported by data measured at Széchenyi István University, such as fired engine dynamometer tests, cold dynamometer tests, component tests, and tribometer tests, presenting their benefits and limitations, where possible through examples and results. The study also provides an insight into the compatibility of different measurement methods.
An empirical approach to a comprehensive damage-equivalent stress function for fatigue
Authors: Welch Michael
Published: September 2022

This paper develops an empirical damage-equivalent stress function for fatigue. Classical analysis methods are used to 'fit' an equation to a number of S-N curves for various grades of carbon steel. The resulting equivalent-damage stress function is applicable to steels subjected to a wide range of heat treatments, from normalised up to hardened and tempered to 1900MPa. It is also applicable to a wide range of stress concentrations, unnotched up to Kt = 5.0 and typical of screw threads. A range of stress ratios and mean stresses are also considered. The function overcomes some of the limitations of existing methods of 'correcting' for mean stress. Existing methods are limited in that, while they may give good results over a range of conditions, there are some circumstances where the results are highly inaccurate. The damage-equivalent stress function is suitable for use in automated calculation procedures such as spreadsheets, MathCAD ©, and SMathStudio ©.
Spatial transportation of the beam on a bifilar fastening
Authors: Stadnik Alexander , Podlesny Sergii , Kaporovych Svitlana , Kabatskyi Oleksii
Published: September 2022

The complex problem of the spatial motion of the "trolley-beam" mechanical system is investigated. Three stages are considered: 1) movement of the beam on a bifilar suspension to the movable trolley; 2) movement of the beam after the breakage of one branch of the suspension; 3) movement of the beam after the breakage of the second branch of the suspension. The study was carried out by creating mathematical models for each stage of the system movement and then conducting a numerical experiment using computer algebra. The tension of the ropes is calculated at the first and second stages of the system movement. Their extreme values are determined. The obtained results will be used in the further study of the system to reduce the tension of the rope and oscillation amplitude and to prevent accidents.
Investigation of coefficient of friction at the interface of automobile brake pads using Greenwood-Williamson contact model and novel test rig
Authors: Kshirsagar Mrunal , Khairnar Hrishikesh
Published: September 2022

Different brake pad materials are produced, each with their unique composition in the recent past, yet performing the same task and claiming to be better than others. The article provides references for different automotive brake pads subjected to various operating conditions. The present investigation develops an analytical approach for estimating COF and contact radius for different disc-brake pads, which can be used to design an efficient automotive brake pad-disc system under the given load and rotational speed. The coefficient of friction at the pad-disc interface is investigated considering Greenwood Williamson (GW) model and developed novel friction test rig. A MATLAB program along with FFT was developed to simulate the surface topography of the contact interface during the braking process aiding the estimation of contact radius. Surface topography of tested brake pads has been analyzed using an infinite-focus-microscope to verify contact radius. At last, the reference is verified by an experimental investigation using a developed test rig and considering operating parameters.
Flutter analysis of tapered composite fins: Analysis and experiment
Authors: Dinulović Mirko , Rašuo Boško , Slavković Ana , Zajić Goran
Published: September 2022

In the present work, the aeroelastic stability of tapered composite plates is investigated. Existing flutter models, based on the typical section approach, are reviewed for quasi-steady and unsteady low Mach number axial flows and modified for the thin composite tapered plates. The numerical approach, based on panel vortex methods for flutter analysis, is presented, and results are compared to typical section flutter methods for the tapered composite fins. Experimental work is performed in the subsonic wind tunnel at flow speeds of 20 - 30 m/s range. Good agreement between experimental, analytical, and numerical results is obtained, and it was concluded that the presented methodology could be used for estimating the flutter boundary velocities for the composite thin flat plates.
Investment performance attribution of the U.S. small-size value mutual funds using Fama-French five-factor model
Authors: Korenak Boris , Stakić Nikola
Published: September 2022

The purpose of this study is to get an insight into the investment performance of the U.S. small-size value mutual funds. The Fama-French five-factor model was used to perform the regression of the portfolio returns composed out of the mutual funds with the chosen investment theme, as well as the regression at the individual level for 64 analyzed mutual funds, against the model's factors. The study covers the period from January 2010 until November 2021, using monthly returns. Our findings suggest that the factors from the original three-factor models are in line with the expectations and there is no presence of the potential style drift. In addition, the operating profit factor shows the expected causality relation. However, the exposure relating to the investing factor is slightly negative and may be surprising to a certain extent, having in mind the stated value style. Investment performance attribution of the portfolio explained the portfolio returns in the relation to the factors and found out that there is a statistically significant underperformance. Positive contributors to the investment performance are, in the presented order of the importance, market premium, as well as portfolio tilt towards stocks of the companies with the strong operating profit, small-capitalization, and aggressive investing policy. Lastly, value-style tilt led to negative performance contribution because the style was out of favor.
Distribution channels of banking services: Attitudes and preferences of clients
Authors: Guzovski Marina , Rudančić Andreja , Zgurić-Dobrenić Vlatka
Published: September 2022

The purpose of this paper is to investigate how the development of information and communication technology affects the choice of distribution channels for individuals, users of banking services. The research aims to show and determine which factors influence natural users when choosing a bank, how technology development affects the distribution channels of banking services, which distribution channels are most represented in the banking sector and why, and whether banks invest enough effort in research its users as active participants in the process of distribution of financial services. The results of the research show that users of banking services are increasingly using digital distribution channels of banking services, of which mobile banking is the most represented, to become clients of a bank based on positive experience or previously opened an account by family. These are more complex services, but they prefer to go to the branch, and that banks do not conduct sufficient research on customer satisfaction, requirements and needs in terms of product or service development. The conclusions based on the conducted research represent valuable knowledge in this part, and only the research can be the basis for further research as well as the development of strategies for the management of distribution channels.
Efficiency analysis of agriculture in Serbia based on the CODAS method
Authors: Vojteški-Kljenak Dragana , Lukić Radojko
Published: September 2022

The issue of analyzing the efficiency of agriculture on the basis of multi-criteria decision-making methods is very current, complex and significant. Based on that, this paper investigates the efficiency factors of agriculture enterprises in Serbia using the CODAS method. The AHP method is used to calculate the weight coefficients of the criteria. The AHP method is used to calculate the weight coefficients of the criteria. The goal and purpose of that is to process the given problems through the complex theoretical, methodological and empirical prisms in the function of improving the efficiency of agriculture in Serbia in the future by taking appropriate measures. The theoretical and practical significance of the research of the treated problem in this paper is reflected in the fact that the application of the CODAS method provides a more realistic situation in relation to the ratio analysis in order to improve the efficiency of agriculture in Serbia in the future by taking adequate measures. There are no similar studies in the literature for other countries, which makes international comparison difficult. Research using this method and including the period from 2013 to 2020 has showed that agriculture in Serbia were the most efficient in 2018. Then we have: 2020, 2019, 2017, 2016, 2015, 2014 and 2013. Recently, under the positive influence of numerous macro and micro factors, the efficiency of agriculture in Serbia has significantly improved. The effects of Covid-19 on the performance of agriculture in Serbia have, among other things, been mitigated to some extent with increased electronic sales of agriculture products.
Social and economic position of smallholders farmers in Serbia
Authors: Tošović-Stevanović Aleksandra , Ristanović Vladimir , Stępień Sebastian
Published: September 2022

The paper focuses on the socio-economic factors of small farms in Serbia. Small farms occupy most of the farmland and, therefore, are very important to economic and agricultural development, although they achieve lower income and are not as productive as large farms. The authors conducted research and addressed the key related to the functioning of small farms in the context of the population working in agriculture. The primary goal of this article was to identify the share of the population working in agriculture and their income structure, level of education, age, gender, working hours etc. Using a database of 550 farms, the socio-economic factors were calculated, and then the impact of the selected factors on economic and sustainable development. Identifying those socio-economic effects may provide recommendations for the policy of supporting small-scale family farms in the analyzed country.
The development of ecological awareness in the Republic of Serbia
Authors: Vujičić Sladjana , Cogoljević Maja , Nikitović Zorana
Published: September 2022

The present time is characterized on the one hand, by a wealth of material goods and a high level of technological development, and on the other hand, by the destruction of nature and the environment. Not often, man is deprived of pure nature, clean water and air. Today we can firmly state that if nature defines our existence and our relationship with it in general, the development of ecological awareness can help change our relationship with nature, and promote more responsible behavior towards it. This paper analyzes the concept and elements of ecological awareness, ecological news factors, the importance of ecological awareness. The research that is presented was conducted in several cities in the Republic of Serbia, by filling in a survey of 10 questions, in the period from April to May 2021. Based on completely random sampling, 105 participants from the territory of several cities in the Republic of Serbia (Kragujevac, Niš, Belgrade, Vranje and Loznica) were selected.
The economic analysis of the business operation of trade companies in the Republic of Serbia during the Covid-19 pandemic
Authors: Staletović Maja , Stevanović Mirjana , Gavrilović Milan
Published: September 2022

This paper analyses the business operation of trade companies in the Republic of Serbia during the Covid-19 pandemic and the impact of the crisis caused by this virus on the work of these companies. Namely, this crisis has caused serious problems in a short period in most sectors and altered the way they do business. It can be said that to a certain extent it caused damage to trade companies, with the effect of the pandemic differing by trade segments. For example, trade companies selling food products even achieved positive results in 2020, when compared to 2019. Accordingly, this paper aims to perceive the manner of business operation and achieved economic results of trade companies that operate in the territory of the Republic of Serbia during the period of existence of the Covid-19 virus.
Aspects of Internet use among older people: Sociological research
Authors: Bandalović Gorana , Šuljug-Vučica Zorana , Tanfara Marta
Published: September 2022

Information and communication technologies have become an integral factor in the daily lives of people over the last decade. Although their usage allows significant advantages, there are still a lot of people in the world who do not use such technologies. In industrialized countries, the reason for this is not in economic factors, but age seems to be a significant determinant of the digital divide. Recently, however, the number of older adults taking advantages of the Internet has been growing. Numerous authors state that a key aspect of successful aging is to remain actively involved in life in old age. In this regard, it is pointed out that online communication and new media present many new opportunities and challenges for the social inclusion of older people. The aim of this paper is to examine the attitudes and opinions of older people towards the use of the Internet and the reasons for its use. The research was conducted using the 2019 survey method on a sample of 240 people over the age of 65 residing in the Šibenik-Knin County in the Republic of Croatia. The results of the survey show that, although more than half of the respondents have an Internet connection, only a fifth own a computer or a laptop. One third of the respondents uses the Internet every day, and most of them did not attend a course to help them use it. They point out that they easily mastered the rules of the network, in which their family members gave them a support and help. Respondents most often search the Internet for the purpose of informing, especially about daily events, then for the entertainment, cultural education and communication with others. More than half of them have a profile on social networks, mostly on Facebook. Despite all this, they do not emphasize the great impact of the Internet on their lives, and believe that the Internet often takes up a lot of free time. Also, more than half of the surveyed population does not use the Internet because they are not interested in it, do not have the financial means to buy a computer. The reason is that they are suspicion of endangering their own security and privacy. However, those not using the Internet state that their accessing to information is not limited because of that. They also point out that the only motivation for starting using the Internet would be the necessity of communicating with their families.
The role of blockchain technology in improving the efficiency of fuel & energy companies
Authors: Kudriakov Fyaritovich Damir , Chernyaev Vasilyevich Maxim
Published: September 2022

This article discusses the impact of new technologies, such as blockchain systems for the functioning of enterprises in the fuel and energy sector. Authors give the definition of blockchain system and split it into types. The article depicts how the blockchain technology affects the fuel and energy complex. Existing cases of technology in the economy has been analyzed in this work. Authors highlighted barriers and prospects of the technology development. The work combines the theoretical aspects of blockchain technology and analysis of practical applications, high operational problems and predicting the potential beneficial effect of a new technology introduction. The aim of this work is to give an economic definition of efficiency of blockchain implementation in modern world. In this article the author used following methods: analysis, synthesis, induction, deduction, thought experiment method, hypotheticaldeductive method and retrospective analysis. In the process of research, the author came to conclusion that the evolution of blockchain has been explored. Main sectors of economics for blockchain use have been emphasized and economic effectiveness of technology has been substantiated.
Adolescent perception of family dysfunction in Serbia and Montenegro by gender and age
Authors: Macanović Nebojša , Đukanović Borislav , Kovač Vesna , Dragojević Arsen
Published: September 2022

In this study, the authors use a specially constructed Family dysfunction Scale to examine the spread and structure of familial disorders on samples of 2803 respondents from Serbia and 1123 from Montenegro. Given that it is about a normal, non-clinical population, more than 4/5 of respondents report good or very good family relationships, while 15% of cases report disturbed family relationships. In order to examine family dysfunctionality, we subjected the 17-item scale with answers in the form of a five-point Likert-type scale, to Varimax factor analysis. The scale, which is being used for the first time, has shown excellent metric properties. Two factors stood out; the first, much stronger, which carries 55.64% of the variance and the second, much weaker, which carries 8.19% of the variance. On the first factor, 8 items were singled out with very high saturations, which provide a picture of cohesive and functional families. On the second factor, also with high saturations, six items describing weakly cohesive, emotionally disturbed and alienated families stood out. Using the T test between the samples of Serbia and Montenegro on the Scale of family dysfunction statistically significant differences were found on 8 of 17 items. In the sample from Montenegro, quarrels, physical conflicts, stressful situations, alienation and lack of understanding between family members are significantly more common. The authors find the reasons in a prolonged chronic socio-economic crisis that led to atypical distributions of family roles and authority, synergistically with some anachronistic collective-psychological patterns in Montenegrin households in the last three decades.
Application of the Curli method for multi-critical decision of grinding process
Authors: Trung Do , Ba Nghien , Tien Dung
Published: September 2022

In the case of highly precise flat surfaces, surface roughness and flatness tolerance (FL) play virtual roles and directly cause the performance of the parts. In general, both surface roughness and FL are required at the minimum value. Grinding is needed in order to finish the surface. However, sometimes in specific grinding conditions, this could not be achieved. Hence, it is imperative to select the grinding conditions that satisfy both parameters to be considered "minimum". This problem is commonly known as multi-criteria decision making (MCDM). However, choose a method to determine the weights for the criteria sometimes makes the decisionmakers confused because each method of determining the weights finds different sets of the weight values. Along with that, for each method of determining the weight, the ranking results of the alternatives may also be changed. Using an MCDM method without specifying weights for the criteria eliminates this problem. Collaborative Unbiased Rank List integration (CURLI) is one of the multi-criteria decision making methods that do not need to determine the weights for the criteria. In this research, we not only applying CURLI method to multi-criteria decision making, but also developing detailed steps to apply. This work has not been done before even for the authors who proposed it. Using this method for multi-criteria decision-making, the grinding process has determined the abrasive grain size, workpiece velocity, feed rate and depth of cut to ensure that the surface roughness and FL are kept to a minimum.
Organic Rankine Cycle (ORC) system in renewable and sustainable energy development: A review of the utilization and current conditions for small-scale application
Authors: Hijriawan Miftah , Aries Himawanto , Agung Pambudi , Arifin Zainal
Published: September 2022

The Organic Rankine Cycle (ORC) is a thermodynamic cycle that converts heat into mechanical energy to produce electrical power in a closed system using organic working fluids. It is also a heat recovery technology that can use heat at low temperatures and makes it a promising thermodynamic cycle with cost-effectiveness and more energy efficiency. However, the ORC system's total efficiency is determined by the compatibility of the expander characteristics and working fluid properties with the system's thermodynamic cycle parameters. This study aims to analyze using an integrative review method regarding the development of the ORC system as a heat recovery technology. The purpose of the integrative review method is to review the knowledge base, where the review is carried out critically and has the potential to conceptualize and expand the theoretical foundation developed. In this case, the first analysis is about the literature study on the parameters of the ORC system. Furthermore, the development and optimization of the ORC system are discussed further to analyze its capabilities in various applications. Work fluids, component optimizations, and system configurations have been reported for possible improvements. In addition, this ORC system can be used as a technology in developing various renewable energy sources, including solar, biomass, geothermal, and waste heat. Furthermore, this system is assessed for its environmental and economic benefits to developing its capabilities and potential. The results show that integrating the ORC system in various renewable energy sources can provide proper operation, better efficiency, and advantages such as increased power and reduced pollution.
Therapy of skeletal anomalies using orthodontic camouflage
Authors: Kukolj Irena , Stojanović Ljiljana , Milosavljević Vojislav
Published: September 2022

Camouflage is a therapeutic procedure used to treat orthodontic anomalies after the cessation of pubertal growth acceleration. The goal of camouflage is to treat skeletal inconsistencies based on tooth extraction. In that way, good intercuspation of lateral teeth and a correct ratio of incisors are achieved, despite skeletal discrepancy. Indications for this procedure refer to patients with moderate and mild distal bites, patients with mild mesial bites, patients who are "too old" for growth modification therapy, and patients with good vertical proportions. Contraindications refer to patients with crowded teeth and incisions of the incisors, patients with good growth potential (it is necessary to use functional orthodontic appliances), severe skeletal discrepancies (when orthognathic surgery is performed) and patients with pronounced vertical disproportions. The method of treatment involves placing an orthodontic appliance in the upper and lower jaw. Retention is mandatory after removing the upper and lower appliance because the teeth tend to return to their original position. Possible side effects are instability and unpredictability of therapeutic results over time (relapses), and patients are sometimes only partially satisfied with aesthetic changes.
Comparison between outcomes of drug-sensitive tubercolosis and multidrug-resistant tubercolosis
Authors: Alković Sanja
Published: September 2022

Tuberculosis (TBC) is an infectious disease, along with its drug-resistant counterpart MDR-TBC, which can clinically manifest into a primary or post-primary TBC or MDR-TBC. Aim - Determine the presence and frequency of MDR TBC within TBC infected patients, who were treated in The Hospital for pulmonary disease "Ozren", and determine unwanted reactions and complications caused by first-line and second-line essential medications within the two groups of the infected. Research determines that there were 96 patients diagnosed with Tuberculosis who were institutionalized in The Hospital for pulmonary disease "Ozren" between 2009 and 2012, who can be di-vided into two groups. Group A: Those infected by TBC, which can be treated by all anti-tuberculosis agents, and Group B: Those infected by MDR TBC. Data that are necessary for comparison between the two groups were collected from medical records and from staff involved in the treatment of patients. The data is processed using statistical methods: arithmetic means, standard deviation, percentages. All results are shown in tabular form or a graph, as absolute and relative numbers. Results show that 6 out of 100 patients diagnosed with TBC are diagnosed with MDR TBC. Mild to moderate gastrointestinal difficulties were observed in both groups as unwanted therapy effects. Unwanted effects from medication are less frequent with-in those infected with MDR TBC, than those infected with TBC. The most frequent complications are hemoptysis and are only present within those infected with MDR TBC.
Dementia: Symptoms and treatment
Authors: Milovanović Slobodanka
Published: September 2022

Dementia is defined as an acquired and permanent disorder of mental abilities of rich etiology that impairs the patient's functionality. There is a disorder in the following intellectual spheres: memory, speech, perception, orientation in time and space, thinking, etc., which worsen over time. Determining the cause of dementia is of great importance for treatment and requires a detailed clinical examination and additional examinations. Among the causes are diseases of the brain, as well as all other diseases that lead to permanent loss of nerve cells. Because neurons do not regenerate over time, disease progression occurs, as well as deterioration in cognition, behavior, and activities of daily living. Forgetfulness is not always a sign of illness, and if the condition does not worsen for at least six months and does not lead to disturbances in the profession and daily work, it is most likely not initial dementia. The most common forms of dementia are Alzheimer's disease and vascular dementia. There are drugs that can slow down the progression of the disease and improve intellectual functioning to some extent. Because of the disease, patients need more and more help. The environment and family need to provide emotional support on a daily basis, which is very important to them in reducing fears, depression, and feelings of abandonment.
From the notary of the writer, professor of pediatrics dr Radoslav Živić (1927-2012)
Authors: Babić Strahinja , Marjanović Aleksandra , Stanković-Babić Gordana , Babić Nevena , Babić Rade
Published: September 2022

The authors present the life and work of prof. dr. Radoslav Živić - Rade who will be remembered as an exceptional pediatrician, professor of lofty pride and morals and a writer who occupies a special place in the contemporary Serbian narrative milieu in which it is difficult to find a prose writer and sensitivity to the meaning of words and the ability to visualize and fruitful grafting in the literary art of Serbia.
Branchial cleft cyst: What really matters?: Case report
Authors: Čukić Ognjen , Milenković Vladimir , Dimkić-Milenković Anđela , Moskovljević Dejan , Lazić Igor , Milenković Marija , Marić Stojan , Vešović Radomir
Published: September 2022

Introduction: Branchial cleft anomalies are considered to develop from the branchial apparatus that did not completely obliterate during the embryogenesis of the head and neck. These anomalies pose a significant challenge in terms of surgical management, particularly followed by misdiagnosis due to its rarity. The aim of this case report was to present the review of literature and treatment of a rare anomaly such as a second branchial cleft cyst with a particular focus on clinical as well as histopathological aspects. Case report: A 24-year-old woman was admitted to the otolaryngology department with a three-month history of painless right-sided neck swelling, following a previously resolved upper respiratory infection. The patient underwent complete excision of the cystic mass, with excellent cosmetic results and no signs of recurrence after a one-year follow-up. Conclusion: Therefore, surgery should always be the gold standard of treatment. In patients aged over 40 years, cystic metastasis from the occult head and neck primary carcinoma must be considered.
The role of the nurse in the assessment and treatment of pain in oncological patients
Authors: Sinanović Šćepan , Prodović Tanja , Martinović Biljana , Ratković Milena , Stepić Danijela , Materić Tamara , Sekulić Jelena
Published: September 2022

Nowadays, pain along with respiratory rate, body temperature, hart rate, arterial blood pressure breathing, temperature, pulse and pressure is considered the fifth vital sign. It is often stated that the pain is the most common symptom in clinical practice, a frequent cause of functional impairment of individual inability to function in a normal way, and the most common reason for seeking medical help. In patients who suffer from a long-term feeling of intense pain, efficiency and working ability are reduced and their emotional state is damaged as well. Due to long-term treatment and damaged everyday functioning, these patients often find themselves as social and financial issues. Knowledge about pain goes back far into the history of medical science and says that pain is a symptom of disease and will disappear when the underlying disease is cured. Nowadays, especially the chronic pain is identified as an independent health issue that can and must be treated. The pain is not only the transmission of impulses from the place of injury to the perception area of the brain but a phenomenon that is influenced by factors quantitative, qualitative and sensory, as well as cultural, social and economic. In addition to physical damage, the combination of psychological, social and spiritual component leads us to the concept of total pain definition. Therefore, it is necessary to act to all these causes for complete pain relief. Pain is an important public health issue worldwide. Despite the tremendous progress of science with new technological discoveries and pharmacological agents, pain is still a worldwide problem. It is a basic human right to live without pain, which means that the health care system is responsible to provide help to anyone who feels pain.
Jürgen Blume: Psalm 30 (2014)
Authors: Park Sa
Published: September 2022

This article deals with Psalm 30 for four-part choir and organ (2014) by the German composer Jürgen Blume. It explores the musical elements that are used in the composition in order to examine the style of the composer. Since Blume's composition is not based on tonal harmonic function, this article uses set theory (prime form and the interval-class vector) in order to examine pitch organization and sonorities. Because Blume chose the genre sacred vocal work (Geistliches Konzert) for his composition, this article compares the form of Blume's composition with one of Heinrich Schütz's sacred vocal works, O süßer Jesu Christ, SWV 405.
Ideological aspects of erotic capital and patriarchal power relations in the visual interpretations of Lola Astanova
Authors: Buljančević Rastko
Published: September 2022

Lola Astanova is a professional Uzbek-American pianist who resorts to controversial performance practices in line with neo-globalist trends. Thus, her extravagant musico-visual "spectacles" are recognisable by an excessive emphasis on female sexuality and the absence of a highly aestheticised, contemplative piano sound. This paper aims to explore how the ideological and interpretive strategies of this un-conventional artist are imbued with the erotic capital and patriarchal power relations of the modern consumer society. A selection of publicly available performances by Astanova has been made, most of which are presented to the audience in the form of video clips. The focus is understandably on Astanova's interpretations of classical music, whose prosaic elements of eroticism and overdramatising musical narration are primarily, but not exclusively, intended for the ear of a patriarchally interpellated listener.
How Matthew quotes the scripture: Analysis of the two old testament quotations in the Gospel of Matthew
Authors: Ivić Branislav
Published: September 2022

Starting with the very simplified overview of reception of the Old Testament in the Gospel of Matthew, the author aims to make the use of the two quotations from the collection of the Book of the Twelve more concrete. The first quote is from the Book of prophet Micah (5:1). It also appears in Mt (2:6), in relation to the birthplace of Jesus Christ, while the second quote is found in the Book of prophet Zechariah (13:7) and it tackles the shepherd metaphor (Mt 36:31). In the first case, we are putting the emphasis on the change concerning the reading of the Old Testament, having in mind that the Greek text of Micah brings the phrase: ὀligostὸs eἶ toῦ eἶnai ἐn chiliάsin Ioyda ("though you are small among the clans of Judah''), while the author of the Gospel of Matthew reads it with the help of the litotes ὐdamῶs ἐlachίse eἶ ἐn toῖs ἡgemόsin Ἰoύda ("by no means least among the rulers of Judah''). At last, we conclude that Bethlehem cannot be in any case perceived as it was before, as 'from you will come the one who leads, who will take care of my people of Israel' (ἐc soῦ gὰr ἐxeleύsetai ἡgoύmenos, ὅstis poimaneῖ tὸn laόn moy tὸn Ἰsraήl). As for the reception of Zechariah (13:7) in Mt (26:31), we should consider the quote that appears also in Mk (14:27). The quote in the Gospel of Matthew is under strong influence of the Masoretic Text and the Damascus Document, with further distancing from Septuagint and Targum. At the same time, there is a parallel drawn between the prophecies of Peter's abstinence, and the Christological reason is given (ἐn ἐmoὶ) for dispersing of the Apostles, which is the case in Mt (11:6; 13:56) as well. Apart from being drastically shortened in comparison to the first place of the appearance, the quote in the Gospel of Matthew brings the whole spectrum of philological virtues that brings it closer to the (possible) Hebrew Vorlage (Original).
The dominance of English in scientific publications: The experience and attitudes of scholars working at a faculty in Serbia
Authors: Igrutinović Smiljana
Published: September 2022

The author of the paper studied the experience and attitudes of 30 scholars working at a faculty in Serbia. The results of the questionnaire comply with the findings of much larger linguistic and sociolinguistic studies conducted on the subject in other non-English academic communities. Namely, to achieve personal academic goals and receive international recognition, all respondents are obliged to publish their papers in English. The choice of the publishing language is simple and does not depend on respondent's age, gender, degree of education, scientific field, knowledge of other foreign languages, and English competence. The choice of publishing language is obvious and comes down to English as a lingua franca (ELF) because 93% of scholars questioned consider English the most significant language for their scientific career and research field. Although they all publish their papers in ELF, most of these non-native speakers of English face both linguistic and non-linguistic issues in terms of lack of material resources, access to the latest research and technical problems. However, the bright side of the questionnaire is the finding that as much as 77% of respondents teaching at one faculty in Serbia publish their articles in the national journals in their native language. Thus, it is conclusive that ELF does not represent a threat to the Serbian language which still remains an important channel of publishing. Certainly, it is necessary to conduct a more extensive study on attitudes of a larger number of Serbian scholars regarding publishing in their native language and English, but this sample confirms that ELF is not necessarily a threat to local languages provided that it is regarded as a means of communication between scientists who do not speak the same native language.