bluuebunny/crossref_metadata_2025 huggingface dataset:
On the Dominant Behavior of Zooplankton in Different types of Domestic Sewage Oxidation Ponds
Authors: Ali Sharique A
Published: September 2022

Plankton are small microscopic organisms, comprising diatoms and algae, which form the basis of primary production, whereas zooplankton are mainly crustaceans, rotifers and larval stages of larger animals which constitute the higher aquatic food web. Both are bio-indicators of a water body, constituting the main food for the carnivorous and omnivorous fishes in the aquatic ecosystem. In the present work, a detailed analysis of zooplankton diversity along with variations in species, and seasonal abundance with average and total population density was carried out in different types of domestic sewage oxidation ponds. Similar analysis for a comparison was done in a freshwater control pond situated in Bhopal India. In this study out of 8 ponds, 4 were selected for zooplankton analysis two being primary and two being secondary sewage oxidation ponds and one freshwater control pond was selected for comparative analysis. The results indicated that the number of zooplankton in all ponds ranged from 162 to 14776 org/L, seasonally it was observed that the sewage oxidation ponds had the maximum population of zooplankton in winter, followed by rainy and summer seasons. Regarding the population of zooplankton in the individual oxidation ponds, it was found that sewage secondary pond IIIB had the maximum zooplankton followed by IIIA. Interesting observations on the cascading effects of physicochemical parameters on plankton dynamics, including the variations in the diel population of various species of zooplankton have been recorded. The phenomenon of plankton grazing in different types of domestic sewage ponds is being reported for the first time.
Fish Poly Culture in Domestic Wastewater Ponds: A Step Towards Protein Rrecovery and Pollution Reduction
Authors: Ali Sharique A.
Published: September 2022

Reclamation or recycling wastewater is an alternative to the gradual degradation of natural water resources. Reused or domestic sewage is highly loaded with nutrients, suspended solids, organic and inorganic matter, and microorganisms that provide natural food for several species of edible fishes. The effluent contains excessive nutrients which may increase the growth of aquatic plants and stimulate the production of natural food for fish. Oxidation ponds or stabilization ponds in the tropics are recognized as effective and economical units for the treatment of domestic sewage as well as biodegradable industrial wastes if managed properly. The driving force in a waste oxidation pond is solar energy utilized by active continuous photosynthesis. The action of sunlight on algae in the pond enables them to grow and rapidly consume the nutrients contained in the sewage. The algae and bacteria play an inter-dependent symbiotic role in these ponds, while the algae use the nutrients and carbon dioxide by bacterial decomposition, the bacteria make use of the oxygen liberated by the algae during photosynthesis, consequently increasing the rich natural biomass for the fishes. Updated compiled information in this review article suggests that domestic waste-water aquaculture is one of the best alternative ways to remove eutrophication as well as increase the culture of poly carps. This domestic sewage-purification cum reclamation bioprocess can be one of the cheapest methods, where natural sunlight, tropical conditions and biological parameters if managed judiciously, can be recycled and reclaimed for economically viable fish culture.
Purification and Characterization of Keratinase from Aneurinibacillus aneurinilyticus Isolated from a Xerophytic Plant Opuntia ficus-indica
Authors: S Sujata
Published: September 2022

Keratinases from Aneurinibacillus aneurinilyticus are capable of degrading keratinous proteins. Salt precipitation and diethylaminoethyly determined the purification and characterization of the enzyme. Ion-exchange and gel permeation chromatography, and SDS-PAGE. Physicochemical factors like pH, temperature, metal ions, enzyme inhibitors and substrate. To study Km and Vmax various concentrations of keratin were used for the activity of enzyme. Gel permeation chromatography with 20.84-fold purification. 203.87 U/mg specific activity showed 34KDa between 14 to 31KDa in SDS-PAGE. The number was stable at pH 7.0-9.0 400-500C, and optimum at pH 9.0 and 500C. Further stimulated by Mg2+, Ca2+, K+, Fe2+, Zn2+, Mn2+, and Na2+ inhibited by Cu2+, Co2+ and Hg2+. Ethylene diamine tetra acetic acid with the highest stimulatory effect was inhibited by Di-isopropyl fluoro phosphatase and phenyl methyl sulfonyl fluoride. Enzyme was stable with Tween-60, TritonX-100 and TritonX-114 declined with ß-mercaptoethanol. It hydrolyzed several keratinous substrates as keratin and casein were 100 and 85.47% utilized with Km=3mM, Vmax =249µmol/ml/min. Xerophytic endophytes are treasure houses as they tolerate biotic and abiotic stress, are stable at high temperatures and pH are selected, such keratinases can be used in leather processing and detergent industries.
Optimizing α-amylase Production from locally Isolated Aspergillus species Using Selected Agro Waste as Substrate
Authors: Abdulsalam Mustapha
Published: September 2022

The goal of this investigation was to see if it was possible to produce α-amylase from agricultural waste (groundnut shell). The strain (M1) identified as Aspergillus sp. exhibited the largest clearance zone (1.6 cm) and was used in fermentation studies. The activity of α-amylase increased after 24 hours of fermentation, peaked at 72.3 U/mL on day 5, and then began to decline. The effect of optimized environmental conditions studied using OFAT, and it was discovered that pH 6, inoculum size of 1 × 107 spores/mL, incubation period of 120 h, substrate concentration of 3 percent (w/v), and temperature of 35oC were the best for producing α-amylase from groundnut shell using Aspergillus sp. In a single fermentation, these optimum conditions were used, and the experiment yielded an optimum enzyme yield of 121.3 U/mL. This research shows that groundnut shell, a low-cost and commonly available waste, could be an ideal substrate for the manufacture of value-added products.
The effect of exponentiating generalized models
Authors:   Department of Statistics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia, Klakattawi Hadeel S. , Khormi Aisha A. ,   Department of Statistics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
Published: September 2022

A common practice in statistical distribution theory involves exponentiating existing distribution functions to include some extra parameters that increase the flexibility of the distribution. This paper examines the effect of exponentiating some generalized models by adding three extra parameters to their probability distribution. Particularly, a new generalized distribution that is a member of the inverted Kumaraswamy family of distributions is considered. Afterward, three additional parameters are applied to enhance this generalized distribution, which results in a novel distribution referred to as the new generalized exponentiated generalized inverted Kumaraswamy Gompertz distribution (NGEGIKGD). Some of the statistical and mathematical characteristics of this distribution were derived. Additionally, parametric estimation of the new distribution parameters was considered using the maximum likelihood method. Several Monte Carlo simulation studies were conducted in order to explore the usefulness of the estimation method. The proposed distribution is then compared with its corresponding sub-models in order to assess the effects of the exponentiation. Further evaluation of the distribution is accomplished by comparing it to some relative distributions. Specifically, three real-world datasets were analyzed to demonstrate the potentiality of the suggested new modeling approach in enhancing the goodness of fit of the generalized models. Results indicate that exponentiating a generalized model significantly improves its fit compared to the non-exponentiating distributions.
A Clinical Validity-Preserving Machine Learning Approach for Behavioral Assessment of Autism Spectrum Disorder
Authors: Lawan Abdulmalik A. , Cavus Nadire
Published: September 2022

Autism spectrum disorder (ASD) is a neuropsychiatric disorder associated with critical challenges related to social, communication, and behavioral issues. Recent studies have proposed machine learning (ML) techniques for rapid and accurate assessment of ASD. However, the mismatch between the ML techniques and the clinical basis of ASD assessment reduces the effectiveness of ML-based assessment tools. The present study proposed an approach that utilized the potential of ML modeling and preserved the clinical relevance of the assessment instrument used. Experimental results of the empirical scoring algorithm and multiple ML models employed revealed the possibility of achieving a clinically valid ML-based ASD assessment tool. This study provides a roadmap for real-life implementation of ML-based ASD screening and diagnostic tools that comprise few behavioral features and maintain clinical relevance.
A Serious Game to Train Rhythmic Abilities in Children With Dyslexia: Feasibility and Usability Study (Preprint)
Authors: Vonthron Francois , Yuen Antoine , Pellerin Hugues , Cohen David , Grossard Charline
Published: September 2022

BACKGROUND

Rhythm perception and production are related to phonological awareness and reading performance, and rhythmic deficits have been reported in dyslexia. In addition, rhythm-based interventions can improve cognitive function, and there is consistent evidence suggesting that they are an efficient tool for training reading skills in dyslexia.

OBJECTIVE

This paper describes a rhythmic training protocol for children with dyslexia provided through a serious game (SG) called Mila-Learn and the methodology used to test its usability.

METHODS

We computed Mila-Learn, an SG that makes training remotely accessible and consistently reproducible and follows an educative agenda using Unity (Unity Technologies). The SG’s development was informed by 2 studies conducted during the French COVID-19 lockdowns. Study 1 was a feasibility study evaluating the autonomous use of Mila-Learn with 2500 children with reading deficits. Data were analyzed from a subsample of 525 children who spontaneously played at least 15 (median 42) games. Study 2, following the same real-life setting as study 1, evaluated the usability of an enhanced version of Mila-Learn over 6 months in a sample of 3337 children. The analysis was carried out in 98 children with available diagnoses.

RESULTS

Benefiting from study 1 feedback, we improved Mila-Learn to enhance motivation and learning by adding specific features, including customization, storylines, humor, and increasing difficulty. Linear mixed models showed that performance improved over time. The scores were better for older children (P<.001), children with attention-deficit/hyperactivity disorder (P<.001), and children with dyslexia (P<.001). Performance improved significantly faster in children with attention-deficit/hyperactivity disorder (β=.06; t3754=3.91; P<.001) and slower in children with dyslexia (β=−.06; t3816=–5.08; P<.001).

CONCLUSIONS

Given these encouraging results, future work will focus on the clinical evaluation of Mila-Learn through a large double-blind randomized controlled trial comparing Mila-Learn and a placebo game.
Screening for Media Use in the Emergency Department Among Young Australians: Cross-sectional Study (Preprint)
Authors: Dullur Pravin , Joseph Joanne , Diaz Antonio Mendoza , Lin Ping-I , Jairam Rajeev , Davies Rhian , Masi Anne , Shulruf Boaz , Eapen Valsamma
Published: September 2022

BACKGROUND

Research on problematic internet use has largely adhered to addiction paradigms, possibly impeding the identification of specific internet behaviors related to psychopathology. This study presents a novel approach to screening for specific problematic internet behaviors by using a new measure, the emergency department media use screener (EDMUS).

OBJECTIVE

The purpose of this study was to identify patterns of internet use in young people presenting with mental health concerns to the emergency department (ED), ascertain associations with their mental health, and evaluate whether the EDMUS can be used to predict subsequent ED presentations within 3 months.

METHODS

This cross-sectional retrospective study of Australian young people (N=149, aged 11-25 years; female: n=92, 61.7%) sought to use the EDMUS, a 24-item questionnaire, to identify problematic internet behaviors, including accessing or posting prosuicidal or proeating disorder content, cyberbullying, and inappropriate digital content. Data on each person’s mental health were extracted from electronic medical records to look for associations with EDMUS responses and ED re-presentation over 3 months. EDMUS items were grouped into clusters for analysis using chi-square tests, binary logistic regression, and path analyses.

RESULTS

Sharing suicidal digital content was the most common problematic internet use pattern identified by the EDMUS. However, this did not correlate with having a prior mental health diagnosis or predict readmission. Most participants had families with a concern for their internet use; however, this was less likely in participants with a diagnosis of personality disorder. Diagnoses of personality disorder or posttraumatic stress disorder were independent predictors of readmission (P=.003; P=.048).

CONCLUSIONS

Although a history of complex psychopathology increases the likelihood of subsequent ED presentations, its links to internet use–related behaviors are still unclear. The EDMUS has potential for identifying young people who are most vulnerable to problematic internet behaviors and offers the opportunity for early intervention and potential prevention of more entrenched difficulties.
Polyphenols as Tyrosine Kinase Inhibitors for the Treatment of Metastatic Cancers: Current and Future Perspective
Authors: Hussain Saad , Alhadidi Qasim Mahmood
Published: September 2022

Cancer is the world's biggest cause of death as a whole. The higher cancer mortality rate is related to metastasis, which is a major stumbling block in cancer treatment. Polyphenols are a diverse set of antioxidant-rich natural compounds that are often used in cancer treatments as chemopreventives and adjuvants. To find publications that highlight the topic of this review paper, a thorough literature search was conducted in several electronic databases such as PubMed Central, Google Scholar, Scopus, and Medline. Many signaling pathways are involved in the metastatic cascade, including the tyrosine kinase pathway. Tyrosine kinases are a group of enzymes involved in the control of cancer spread. Polyphenols' true role in cancer metastasis remains unappreciated, despite a large body of research proving their antimetastatic effects. As a result, the current work lays out cancer metastasis signaling pathways, stressing the importance of tyrosine kinases in the metastatic process. Polyphenols can suppress tyrosine kinase activity, which contributes to their antimetastatic characteristics. The importance of polyphenols in preventing cancer metastasis by interfering with the tyrosine kinase signaling cascade is highlighted in this work, which could lead to the development of future antimetastatic drugs.
EXPLORING THE SEMANTIC ASPECTS OF PERSIAN COMPOUNDS MADE BY ᴂfkᴂn (CAST): A CONSTRUCTION MORPHOLOGY APPROACH
Authors: Hannan Somayyeh , Imani Zolfa
Published: September 2022

Persian compound words, which are classified into two categories as primary and secondary compounds (Shaghaghi, 2008), are typically examined in the Construction Morphology proposed by Booij (2010; 2016; 2018). Within the framework of the theory, this study has attempted to explore the constructional schemas of the Persian compound words made of the present stem æfkæn (cast). To this end, 60 compound words have been collected from numerous sources such as Persian linguistic corpora, Persian grammar books, Persian monolingual dictionaries as well as some Persian reliable websites. Comparing the structure of the compounds made by it, taking the meaning of each compound into account and drawing the constructional schemas, we indicate that these compounds are given eight different semantic categories. Additionally, the constructional schema revealed that the semantic interpretation of these compounds may be allocated a continuum with the most semantically transparent compounds and the metaphorical or idiomatic meaning. Indeed, through the theory of Construction Morphology, the semantic distinctions of the compounds made of æfkæn (cast) could be well specified.
FORENSIC INTERVIEWS WITH CHILDREN
Authors: Dimovski Darko
Published: September 2022

A forensic interview is a step forward in preventing the secondary victimization of children in situations where they are witnesses to a criminal event. However, its implementation requires not only appropriate training of interviewers but also appropriate preparation for each individual case. The author first defines the concept of forensic interview with a child and explain its stages. In the second part of the paper, the author considers the normative bases for its introduction in the Republic of Serbia, and analyzes the forensic interviews conducted so far by the Social Welfare Center "St. Sava" in Niš.
PARTIES IN ADMINISTRATIVE DISPUTES
Authors: Katić Ana
Published: September 2022

The paper explores the issues of active legitimacy to be a party in administrative dispute proceedings and the representation and protection of parties’ rights before the Administrative Court, established as a court of special jurisdiction by the Act on Seats and Areas of Courts and Public Prosecutor's Offices which entered into force in January 2010. The author first examines who can be the plaintiff, the defendant, and the interested person in an administrative dispute, and then focuses on the rules on representing the parties before this specialized court. Subsequently, the author explores the current case law established by the Administrative Court.
ONE-DIMENSIONAL BIOLOGICAL MODEL OF SYNOVIAL JOINTS REGENERATIVE REHABILITATION IN OSTEOARTHRITIS
Authors: Popov Valentin L. , Poliakov Aleksandr , Pakhaliuk Vladimir
Published: September 2022

This work is devoted to the study of a one-dimensional phenomenological model of a focal defect regenerative rehabilitation in the articular cartilage. The model is based on six differential equations in partial derivatives of the “Diffusion-Reaction” type, which was previously used by a number of authors to study cellular processes in various tissues under cell therapy conditions. To take into account the influence of moderate mechanical stimulation of immature tissue, an indirect approach was used, as a result of which some model parameters that directly affect cell proliferation and differentiation were varied considering experimental data. The results of  the model study  show that moderate stimulation of immature tissue in the early stages of repair the focal articular cartilage defect under conditions of cell therapy leads to an intensification of regenerative processes in the tissue and promotes more rapid formation of the extracellular matrix.
STABILITY AND ERROR OF THE NEW NUMERICAL SOLUTION OF FRACTIONAL RIESZ SPACE TELEGRAPH EQUATION WITH TIME DELAY
Authors: Asl Malek A. , Saei Farhad D. , Javidi Mohammad , Mahmoudi Yaghoub
Published: September 2022

In this paper, we propose a numerical method for Riesz space fractional telegraph equation with time delay. The Riesz fractional telegraph equation is approximated with the interpolating polynomial P2. First a system of fractional differential equations are obtained from the telegraph equation with respect to the time variable. Then our numerical algorithm is proposed. The convergence order and stability of the fractional order algorithms are proved. Finally, some numerical examples are constructed to describe the usefulness and profitability of the numerical method. Numerical results show that the accuracy of order O(t3).
SOME BOUNDS FOR THE COMPLEX µCEBYEV FUNCTIONAL OF ABSOLUTELY CONTINUOUS FUNCTIONS
Authors: Dragomir Sever S.
Published: September 2022

In this paper we provide several bounds for the modulus of the \textit{%complex \v{C}eby\v{s}ev functional}%\begin{equation*}C\left( f,g\right) :=\frac{1}{b-a}\int_{a}^{b}f\left( t\right) g\left(t\right) dt-\frac{1}{b-a}\int_{a}^{b}f\left( t\right) dt\int_{a}^{b}g\left(t\right) dt\end{equation*}%under various assumptions for the integrable functions $f,$ $g:\left[ a,b%\right] \rightarrow \mathbb{C}$. We show amongst others that, if $f$ and $g$are absolutely continuous on $\left[ a,b\right] $ with $f^{\prime }\in L_{p}%\left[ a,b\right] ,$ $g^{\prime }\in L_{q}\left[ a,b\right] ,$ $p,$ $q>1$and $\frac{1}{p}+\frac{1}{q}=1$, then%\begin{equation*}\max \left\{ \left\vert C\left( f,g\right) \right\vert ,\left\vert C\left(\left\vert f\right\vert ,g\right) \right\vert ,\left\vert C\left(f,\left\vert g\right\vert \right) \right\vert ,\left\vert C\left( \left\vertf\right\vert ,\left\vert g\right\vert \right) \right\vert \right\}\end{equation*}%\begin{equation*}\leq \left[ C\left( \ell ,F_{\left\vert f^{\prime }\right\vert ^{p}}\right) %\right] ^{1/p}\left[ C\left( \ell ,F_{\left\vert g^{\prime }\right\vert^{q}}\right) \right] ^{1/q},\end{equation*}%where $F_{\left\vert h\right\vert }:\left[ a,b\right] \rightarrow \mathbb{[}%0,\infty )$ is defined by $F_{\left\vert h\right\vert }\left( t\right):=\int_{a}^{t}$.$\left\vert h\left( t\right) \right\vert dt$ and $\ell :%\left[ a,b\right] \rightarrow \left[ a,b\right] ,$ $\ell \left( t\right) =t$is the identity function on the interval $\left[ a,b\right] .$ Applicationsfor the trapezoid inequality are also provided.
ON f− STATİSTİCAL CONVERGENCE OF FRACTİONAL DİFFERENCE ON DOUBLE SEQUENCES
Authors: Atabey Koray İbrahim , Çınar Muhammed
Published: September 2022

In this paper, using the fractional difference operator and a modulus function we introduce the concepts of $({}^{}_{2}{\Delta_{\beta}^{\tilde{\alpha}}},f)-$ statistical convergence, $({}^{}_{2}{\Delta^{\tilde{\alpha}}},f)-$ statistical Cauchy and p-strongly $({}^{}_{2}{\Delta^{\tilde{\alpha}}},f)-$ Cesàro summability, $(0<p<\infty)$ for double sequences. We also give some inclusion relations between $({}^{}_{2}{\Delta^{\tilde{\alpha}}},f)-$ statistical convergence and p-strongly $({}^{}_{2}{\Delta^{\tilde{\alpha}}},f)-$ Cesàro summability $(0<p<\infty)$.
IMPULSIVE STURM-LIOUVILLE PROBLEMS ON TIME SCALES
Authors: Allahverdiev Bilender P , TUNA HÜSEYİN
Published: September 2022

In this paper, we consider an impulsive Sturm-Lioville problem on Sturmian time scales. We investigate the existence and uniqueness of the solution of this problem. We study some spectral properties and self-adjointness of the boundary-value problem. Later, we construct the Green function for this problem. Finally, an eigenfunction expansion is obtained.
THE INFLUENCE OF EXTERNAL AND INTERNAL FACTORS ON THE DROP JUMP HEIGHT
Authors: Klisarić Dragan
Published: September 2022

The Drop jump (DJ) is an important tool in muscle power development. There are different factors that determine DJ performance, of which the key external and internal are defined. The aim of this narrative review article is to present the factors that determine the performance of the DJ. The comparative analytical method is used to compare and comment on the results of available scientific studies. The results show that technique and instruction together, among external factors, highly determine DJ height. The highest determination of DJ height has age among its internal factors. These findings contribute to better management of motor abilities testing and the training process in order to accomplish high sports success.
EMOTIONAL INTELLIGENCE IN ACROBATIC GYMNASTICS: HOW IMPORTANT IS THE ATHLETIC PROFILE?
Authors: Tatsi Vasiliki , Selemidi Eleni , Ypsilanti Christina , Venetsanou Fotini
Published: September 2022

Emotional intelligence (EI) is considered to be an important parameter in the world of sports, as it affects the athletic performance and wellbeing of athletes. The purpose of this study was to examine EI in athletes of Acrobatic gymnastics (ACROGYM). Furthermore, potential differences in EI that may be associated with athletic profile (age, years of participation in ACROGYM, number of competitions, competition category) were investigated. In total, 95 acrobatic gymnasts, 9-18 years old (15.92 ± 3.17 years) participated voluntarily. The athletes’ EI was assessed with the Emotional Quotient Inventory-Youth Version (EQ-i: YV), culturally adapted for the Greek population. According to the results, the ACROGYM athletes presented high levels of EI. However, the correlation analyses revealed that the association between the athletes’ profile and scores on EI scales was not statistically significant (p >.05). The t-tests and the MANOVAs applied showed no statistically significant differences in the EI subscales associated with gymnasts’ (a) participation in national competitions (p > .05); (b) frequency of training sessions per week (p > .05); (c) (not) being a member of a duet or a trio (p > .05); (d) position in the group (base, middle, top). It can be concluded that Greek acrobatic gymnasts present high levels of EI regardless of their age, their sport's experience or their level of performance. Moreover, neither their participation in a group nor their role in it seem to differentiate the dimensions of EI. Nevertheless, further research is needed in order to shed more light into EI in gymnastics.
FUNCTIONAL TRAINING VS. PHYSICAL EDUCATION CLASSES: THE EFFECTS ON PHYSICAL PERFORMANCE IN PRIMARY SCHOOL GIRLS
Authors: Lasković Marko , Marković Miroslav , Stanković Veroljub
Published: September 2022

This study aimed to determine the effects of two training methods on the strength and mobility of trunk muscles in primary school girls. The sample of participants included 596 girls aged 11 to 15. The participants were randomly assigned to two groups: 1) an experimental group (n = 314) that performed a functional training (FT) program; 2) a control group (n = 282) that performed regular Physical Education (PE) classes. The experimental program was implemented during regular PE classes over a period of 16 weeks, where 3 training sessions were conducted per week, lasting 45 minutes each. The FitnessGram battery of tests was used to estimate the strength and mobility of trunk muscles at the initial and the final measurement. The following tests were used: Curl up, Incline push-ups, and dynamic and static Trunk lift tests. The results of the two-factor ANOVA showed significant (p < 0.001) improvements in each test for both groups. The magnitude of the effect size ranged from medium to large and differed between the methods in all tests except for abdominal muscle strength. These findings indicate that both training programs are beneficial for developing trunk muscle strength and mobility in primary school girls. Future research should consider investigating differences between the methods in primary school students.
APPLICATION OF PROCESS FUNCTION METHOD FOR THE EVALUATION OF WATER TREATMENT PLANT ORGANIZATIONAL PERFORMANCE – PUC “NAISSUS” NIŠ CASE STUDY
Authors: Stanković Sandra , Vasović Dejan , Petrović Natalija , Boričić Aleksandra , Takić Ljiljana
Published: September 2022

The analysis of the administrative public utility bodies in charge of water treatment and distribution revealed the need for improvement and a clear definition of the place and role of the administrative-planning bodies for water delivery, as well as the improvement of the implementation of works in water supply systems. In this research, the assessment of the organizational performance of the water treatment plant is performed by means of the process functions method. Furthermore, this method improves the efficiency of operations in the water treatment plants through the evaluation of job implementation in the field of water supply. The concept of process functions includes the analysis of key jobs necessary for timely and successful task implementation by each job role within the organization. This method is most extensively applied in the organizational sciences, such as human resource management – organizational design, including the analysis of functional organizational charts, while its application is limited in engineering sciences. Since the most important resource of any organization is the human capital (i.e., its employees), this paper focuses on a water utility company “Naissus” from Serbia regarding its evaluation of organizational performance. Furthermore, the aim of this study is to introduce process functions as a standard analytical method, thus connecting all activities within the water treatment plant in order to optimize its operations.
IMPORTANCE OF INSTITUTIONAL CAPACITY FOR ATTRACTING FDI IN THE WESTERN BALKAN COUNTRIES
Authors: Stevanović Tatjana , Marković Ivan , Lepojević Vinko
Published: September 2022

Foreign direct investments are an integral part of open and effective international economic system, and they are the main catalyst for development. However, the benefits of a foreign direct investment are not the same in all local communities, sectors and countries. International investments and national policy are aimed at foreign direct investment and reap benefits of investment development. The challenges are primarily related to the host countries, and the establishment of an efficient and transparent policy to attract investment, and that must be paid to building human and institutional capacity for their implementation. Compared to the existing literature, which focuses mainly on the effects of political risk or corruption on FDI, our contribution is reflected in testing a wider range of institutional variables and their impact on undertaking investment projects by foreign investors. The analysis included 5 countries of the Western Balkans in the period of 22 years starting from 1998 until 2019. In the analysis of empirical data, we used the fixed effect model (FEM) for evaluating FDI. Also, the quality of the research is promoted using balanced panel data.
FOCALIZATION IN MUNRO’S “SOMETHING I’VE BEEN MEANING TO TELL YOU” – COGNITIVE POETICS IN PRACTICE
Authors: Ignjatović Sanja
Published: September 2022

The paper explores the dimensions of focalization from the point of view of cognitive poetics leaning on the idea that focalization directly affects the reading experience and, therefore, the reception of the narrative discourse. The importance of deixis, their referential value in the storytelling process and reception, is illustrated on the example of the short story “Something I’ve Been Meaning to Tell You” by Alice Munro. Focalization is treated as a rhetorical instrument modifying various layers of the narrative discourse and strategically guiding the process of reception. The first section presents the theories relevant for the understanding of the concept of focalization, and it includes a short overview of deixis from the point of view of cognitive poetics. The analysis of the short story by Alice Munro follows to serve as an illustration of the rhetorical flexibility of storytelling. Finally, the concluding remarks offer arguments against the conventional comprehension and interpretation of third-person narration.
DISTANCE TEACHING OF CHEMISTRY DURING THE COVID-19 PANDEMIC: CHALLENGES AND SOLUTIONS
Authors: Олић Нинковић Станислава , Адамов Јасна
Published: September 2022

The aim of this paper was to examine the opinion of chemistry teachers on distance learning realized during the COVID-19 pandemic in the period from March 17 to June 15, 2020. The sample includes 75 primary and secondary school chemistry teachers. The results show that the third of teachers and students followed the teaching contents in chemistry that were broadcast on the channels of the Public Media Service of Serbia. Most teachers realized distance learning using the Google classroom, using teaching materials that they created in the form of presentations, videos and tests, while communication with students and parents was mostly reduced to Viber and social networks. Chemistry teachers had difficulties during the planning and preparation of teaching materials, but also during the assessment which, in the opinion of most teachers, was not objective. The paper presents the suggestions of teachers in order to improve the assessment process. The general attitude and satisfaction of chemistry teachers about the realized teaching is divided - while some teachers are very satisfied, others are dissatisfied. Chemistry teachers have clearly pointed out the need for professional training in the field of making materials for distance learning, working with software and platforms for the implementation of teaching itself, but also in the field of methodological training and preparation for distance learning.
OPPORTUNITIES AND LIMITATIONS OF TRAVEL AGENCY REGISTRATION IN THE PUBLIC ADMINISTRATION SECTOR IN SERBIA
Authors: Stanić Jovanović Sara , Pavlović Sanja
Published: September 2022

The registration of travel agencies in the sector of public administration contributes to monitoring and analyzing the level of tourism development in the country. Multiple benefits of keeping records of travel agencies in the public administration sector include all interested parties, domestic and foreign physical entities as beneficiaries of tourism services, the private sector as providers of these services and the public sector as the creator of policies and strategies of tourism in the country. Establishing and keeping the register of tourism within Serbian Business Registers Agency as the unique, electronic and central public database of registered and/or recorded entities performing tasks in the field of tourism on the tourism market of the country, contributes to the monitoring of the level of tourism development, analysis of the condition of the unified tourist offer, encouraging development initiatives in the tourism sector, the implementation of modern solutions in the field of planning agency business in Serbia. The study uses mixed qualitative and quantitative methods, including field research and comparative analysis and description. The results suggest that the initial hypothesis, which refers to the current unsatisfactory level of the system for the registration of travel agencies in the public administration in the Republic of Serbia, is valid.
ИЗАЗОВИ УПРАВЉАЊА ТРОШКОВИМА УНИВЕРЗАЛНЕ ПОШТАНСКЕ УСЛУГЕ
Authors: Jablan Stefanović Radmila , Knežević Vladan , Đeković Zoran
Published: September 2022

The provision of information with an accurate and timely description of all business processes holds a prominent position among various activities for enhancing the operations of network industries. Since price pressure is the primary consequence of competition in network industries, it is necessary to perform a cost analysis of the business processes of the industry’s monopolists. The realisation of all business activities that make up a production chain at as low a cost as possible, without affecting the quality of products and services, is the main issue of concern to network industry management. A key problem of cost management in network industries is their specific structure characterised, inter alia, by high participation, rapid growth and diversification of overhead costs.The research subject of this paper is the theoretical identification and understanding of the basis of a potential Universal Postal Service (UPS) cost accounting model of the Public Postal Operator (PPO) in Serbia. EU Directive 97/67 represents the starting point for providing the guidelines for the development of this model, such as separate internal accounting for several PPO service segments. The existing legislative framework which defines the relations on the national postal service market pays special attention to the cost of UPS, which provide the basis for service pricing. Тhe relevant result of this research, which has a significant practical application, is the basis of the model for calculating the cost of universal postal service, designed to provide informational support to management in the process of service pricing.
THE INFLUENCE OF THE EXPERIMENTAL CONTEXT ON LEXICAL AMBIGUITY EFFECTS
Authors: Mišić Ksenija , Filipović Đurđević Dušica
Published: September 2022

Previous research with the visual lexical decision task demonstrated that polysemous words (multiple related senses) have a processing advantage when compared to unambiguous words, whereas homonymous words (multiple unrelated meanings) have a processing disadvantage. Although the same pattern of results was observed in Serbian, the two effects were investigated in separate studies. The aim of this study was to test whether the effects can be replicated when both types of ambiguity are presented within the same experimental list. To test this, we conducted three experiments. In the first one, the mixed presentation of unambiguous, homonymous, and polysemous words did not reveal any of the ambiguity effects, leading to the conclusion that the experimental context may affect the emergence of ambiguity effects. The other two experiments were conducted to explicitly control for the experimental context. In both experiments, we presented each ambiguity type within the same block and counterbalanced the order of the block presentation. These experiments revealed the presence of the polysemy advantage, but not the homonymy disadvantage, which is a common pattern in literature. Polysemy effects typically emerge relatively easily, whereas the homonymy disadvantage requires additional conditions. Finally, we conclude that experimental context does play a role in ambiguity processing, although the order of presentation does not affect the overall results.
ДУВАЧКИ МУЗИЧКИ ИНСТРУМЕНТИ У СРПСКОЈ ФРАЗЕОЛОГИЈИ
Authors: Stakić Mirjana M. , Stojadinović Aleksandar M. , Milovanović Boško Lj.
Published: September 2022

Musical instruments are integral to our folklore and tradition, so much so that some even entered the phraseology of the Serbian language, shaping the image of the world expressed by it. The paper is aimed at examining idioms containing wind instruments as their component to determine what kind of linguistic image they depict. Examination of such material in contemporary Serbian language necessitated that its corpus be borrowed from The Phraseological Dictionary of the Serbian Language by Đorđe Otašević (2012), both due to its year of publication, and the author's intentions to examine the contemporary standard language. Reviewing the Dictionary, it was established that the following wind instruments occur as phraseological components: bagpipes, diple (type of bagpipe), duduk (double-reed woodwind instrument), the horn, svirala (pipe or flute), gourd and the fanfare. The semantic analysis of the idioms that contain the wind instruments mentioned above has established that the generation of the phraseological meaning results in a complete or partial desemanticization. In cases of complete desemanticization, the process of generating sound, i.e. playing these instruments, is transferred to the domain of human speech, thinking and actions. The process of partial desemanticization largely occurs in idioms with a comparative structure which are used to denote human traits, states or behaviors. In both cases, phraseologisms with negative meanings dominate. This may indicate that some of the functions of these wind instruments in our past have been negatively evaluated in the collective conscious from an ethical point of view, which indicates the need for new research.
INCORPORATION OF COMPANIES IN SERBIA - THE SCOPE OF PRESENCE OF ELECTRONIC AND TRADITIONAL PROCEDURES
Authors: Nikolić Ljubica
Published: September 2022

Increasing the investment activity of the existing companies and stimulating the incorporation of new companies is one of the factors of economic development. Many factors determine the scope of economic activity in a country, one of them is the procedure for incorporating economic entities. If we start from the assumption that the investor, domestic or foreign, has assessed the possibility of profiting in a specific economic environment, the first step in the realization of their business idea is the incorporation of their company. The legislation in Serbia provides an opportunity for a significant part of the procedure for incorporating business entities to be conducted electronically. Using this opportunity implies the knowledge of several laws related to the procedure for incorporation registration, as well as mastering new e-methods of communicating and running business. In this paper, we point out the normative solutions related to the e-registration of companies in Serbia and the problems in the practice that the founders encounter. E-registration of business entities entails the understanding of numerous e-instruments such as: e-documents, qualified e-signature, e-address, user applications, qualified e-time stamp and others. Memorandum of Association and other acts can be made in written or e-form, so the question arises whether all documents when forming a company can be in e-form and how an e-document can be materialized without losing legal force. Another legal obligation in our country, for some companies, is the e-records of beneficial owners. We will deal with these and other practical issues that the founders of companies in Serbia face in this paper.
STATUS AND CONCEPT OF THE SCHOOL SUBJECT HARMONY IN SECONDARY MUSIC EDUCATION
Authors: Nagorni Petrov Nataša
Published: September 2022

The paper analyses the curricula of the school subject Harmony (The Science of Harmony) throughout the period of twelve decades (1899‒2020), i.e. since the foundation of the first music school in Serbia up to the present day. The necessary and frequently unavoidable changes of these curricula have passed through five stages, or five steps in the development of the educational system and the concept of the school subject Harmony taught in secondary music schools. The examination of the dynamics and range of changes applied in order to define the goals, content, structure and character of the school subject Harmony is based on the analysis and classification of the available resources and data. The aim of this research is twofold: to examine the level and type of changes occurring in the Harmony curricula and to analyze and interpret the impact of the study of Harmony on personality and character of musicians of multiple career profiles. Music school students are thus allowed to devise their own career path and apply the acquired knowledge in practice when either playing an instrument, or singing, playing in an orchestra, analyzing music literature or simply exhibiting their creativity and potentials in various ways.
Prediction of Cardiac Arrhythmia using Machine Learning
Authors: B Kavyashree , M D Rakesh
Published: September 2022

Abstract: The Heart is one of the most important organ responsible for sustaining Human life. The Normal functioning of it is very important but the irregular functioning of it will causes few problems which may be classified as different heart disease. Arrhythmia an Irregular Heart Beat, which is considered as one of the Cardio Vascular Disease. Electrocardiogram (ECG) is the most preferred tool used to capture Heart Beat. Without taking proper pre-cautionary measures this may lead to sudden death, blood clots, heart failure, stroke, etc.. Machine learning is the study of computer algorithms. In this work by adopting Machine learning algorithms such as Logistic Regression, Decision Tree, SVM[Support Vector Machine]are done to foresee the Cardiac Arrhythmia. The data-sets are collected from UCI Repository & processed using python programming .From all the three applied algorithms the SVM model showed the better results of 91.41\% in terms of accuracy for 80/20 combinations of Train and Test data sets. Therefore from this work SVM model is considered as best algorithm for the prediction of Cardiac Arrhythmia.
MODELING OF SEISMIC WAVES STRESSES IN A HALF-PLANE WITH A VERTICAL CAVITY FILLED WITH WATER (THE RATIO OF WIDTH TO HEIGHT IS ONE TO TEN)
Authors: Musayev Vyacheslav
Published: September 2022

The problem of mathematical modeling of unsteady seismic waves in an elastic half-plane with a ver-tical rectangular cavity filled with water is considered. The problem of modeling problems of the transition peri-od is an actual scientific problem. A quasi-regular approach is proposed to solve a system of linear ordinary dif-ferential equations of the second order in displacements with initial conditions and to approximate the region un-der study. The method is based on the schemes: a point, a line and a plane. An algorithm and a set of programs for solving flat (two-dimensional) problems that allow obtaining a stress-strain state in complex objects have been developed. To assess the reliability of the developed methodology, algorithm and software package, the problem of the effect of a plane longitudinal wave in the form of a Heaviside function on an elastic half-plane was solved. The numerical solution corresponds quantitatively to the analytical solution. The problem of mathe-matical modeling of unsteady elastic stress waves in a half-plane with a cavity filled with water (the ratio of width to height is one to ten) under seismic influence is solved. A system of equations consisting of 8016008 un-knowns is solved. Contour stresses and components of the stress tensor are obtained in the characteristic areas of the problem under study. A cavity filled with water, with a width-to-height ratio of one to ten, reduces the amount of elastic contour stress.
MODELING AND MONITORING OF STRUCTURAL SAFETY OF LONG-OPERATING UNDERGROUND STRUCTURES OF THE SEWAGE SYSTEM IN THE CONDITIONS OF INCREASING ANTHROPOGENIC ACTIONS IN ORDER TO PROVIDE SUSTAINABLE LIFECYCLE OF ENGINEERING INFRASTRUCTURE OF THE MEGACITY (THE EXPERIENCE OF ST. PETERSBURG)
Authors: Perminov Nickolai , Mangushev Rashid
Published: September 2022

Long-term operation in difficult engineering-geological conditions of unique underground sewage facilities creates the danger of violating their structural safety. A long-term study of the dynamics of changes in a technical state of large pumping stations and deep sewage tunnels made it possible to establish patterns of influence of intensive anthropogenic and dynamic actions on this process. The developed discrete and continuous diagnostic models of defect development in tunnel structures allow identifying potentially hazardous areas subjected to manifestation of critical failures and methods of their localization. On the basis of numerical modeling the boundaries of defect-free joint operation of the system “source of impact – geo-mass – sewage underground structure” have been determined. The geotechnical and structural calculations are used to simulate the interaction of the facilities with the soil environment and predict adaptive stress-strain control system parameters. With increasing external anthropogenic and dynamic impacts, modeling zones of urban areas with potentially dangerous sections of underground sewage facilities constitute the basis for development of regulatory documents on monitoring methods and safe development of the geotechnical infrastructure of a megacity.