bluuebunny/crossref_metadata_2025 huggingface dataset:
A rare thyroid disorder mimicking mitochondrial disease
Authors: Sarajlija Adrijan , Todorović Slađana , Alimpić Biljana , Čehić Maja
Published: December 2021

Introduction. Patients affected with Allan-Herndon-Dudley syndrome (AHDS) have a deficiency of monocarboxylate transporter 8 (MCT8), a protein primarily responsible for the transport of triiodothyronine (T3) into the brain. This X-linked disorder affects almost exclusively males with clinical presentation encompassing developmental delay, axial hypotonia, dystonia, poor head control, quadriplegia and absence of speech. Case reports. Patient 1 is a male child referred to a hospital investigation at 11 months due to severe developmental delay and elevated blood ammonia level (163 mcmol/L). Hypotonia and dystonic movements were noted at admission, with facial dysmorphic features. Laboratory findings revealed increased blood lactate (17.2 mmol/L), alanine (533 mcmol/L) and ammonia (391 mcmol/L) concentrations. Serum creatine-kinase levels showed substantial increase over the course of hospitalization up to 6,855 IU/L. Clinical exome sequencing detected a novel hemizygous frameshift insertion c.1456insC in gene SLC16A2, predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. Segregation genetic testing of the family members revealed that mother, maternal uncle and maternal grandmother carry the same mutation in SLC16A2. The boy`s mother experienced learning difficulties through childhood while maternal uncle is severely affected by AHDS. Patient 2 is a boy referred to clinical geneticist due to severe psychomotor delay of unknown etiology. Moderate serum lactate elevation was the only laboratory abnormality during initial investigations. Diagnosis of AHDS was established by clinical exome sequencing, and subsequent hormonal evaluation revealed increased triiodothyronine (T3) level which corresponds well to genetic diagnosis. Conclusion. Presence of lactic acidosis and/or hyperammonemia in children with severe developmental delay is not specific for inborn disorders of energy production, such as mitochondrial disease. Clinicians should consider thyroid hormones profiling in cases of unexplained severe developmental delay in male children, especially if associated with axial hypotonia and dystonic movements.
Agricultural sustainability and social responsibility
Authors: Dukić-Mijatović Marijana , Uzelac Ozren , Stoiljković Aleksandra
Published: December 2021

Exchange of the drought and precipitations due to climate changes is preventing higher agrarian output. Although modern technology and methods of farm production may be the answer to this question, these raise public concerns about employment and environment quality. Because of demographic and technological lagging, some countries face other problems of achieving agronomic sustainability. In this paper, the importance of sustainable agriculture development, legal bases and some aspects of agricultural social responsibility are explored. Comparative and logical deduction methods of reviewing the selected international and national documents and literature were employed. Authors conclude there are adequate legal frameworks for agricultural social responsibility and the discussion if agriculture's moral priorities affect its economic performance will never end.
Credit risk assessment of agricultural enterprises in the Republic of Serbia: Logistic regression vs discriminant analysis
Authors: Tekić Dragana , Mutavdžić Beba , Milić Dragan , Novković Nebojša , Zekić Vladislav , Novaković Tihomir
Published: December 2021

Credit risk assessment of agricultural enterprises in the Republic of Serbia was analyzed in this research by applying discriminant analysis and logistic regressions. The aim of the research is to determine the financial indicators which financial analysts consider when analyzing a loan application that have the most influence on the decision to approve or reject a loan application. The internal determinants of credit risk of agricultural enterprises are analyzed, i.e., indicators of financial leverage, profitability, liquidity, solvency, financial stability and effectiveness. The analyzed models gave different results in significance of the observed indicators. The indicators that stood out as significant in both models are only indicators of profitability and solvency. The model of discriminant analysis has successfully classified rate 81.0%, while the logistic regression model has successfully classifies rate 89.8%. In modeling the credit risk of agricultural enterprises in the Republic of Serbia, the logistic regression model gives better results.
Attitude of employees on the application and significance of HACCP system in rural tourist households in Serbia during Covid-19
Authors: Gajić Tamara , Popov-Raljić Jovanka , Čerović Slobodan , Aleksić Milica , Sikimić Višnja
Published: December 2021

Diseases caused by food consumed in restaurants during a pandemic, can cause enormous damage and lead to closure of rural households. The aim of the research was to determine the attitude of employees in rural households on the application and importance of doing business according to the HACCP (Hazard Analysis and Critical Control Point) food safety system in 47 rural tourist households in Serbia during the COVID-19 pandemic. A structured field survey questionnaire was conducted on a sample of 286 employees. The generated data were processed by the statistical program Statistica 14.0. The obtained results show that the application of HACCP food safety system during the pandemic was highly appreciated by the employees and that operating according good hygiene practice (GHP) and good manufacturing practice (GMP) fully meets all safety requirements and the extent to which employees in rural households must be aware of and be instructed in its application.
McCann and others v. The United Kingdom and positive obligations pertaining to the planning and control of the operations of law enforcement in line with article 2 of the ECHR
Authors: Martinov Darija
Published: December 2021

Positive obligations are obligations of the Member States of the European Convention for the Protection of Human Rights and Fundamental Freedoms to take active steps to protect the rights guaranteed by this Convention. When it comes to the protection of the right to life, as one of the basic human rights, the case of McCann and Others v. the United Kingdom set a precedent and established new obligations for States party to the Convention when it comes to planning and conducting law enforcement operations. The manner in which these obligations were established, their scope and content, as well as the comments from jurisprudence and practitioners on this innovative judgment, are the subject of the analysis of this paper.
Antioxidant, anti-inflammatory, and anti-hyperlipidemic properties of the spelt grass juice
Authors: Antonić Tamara , Stefanović Aleksandra , Gojković Tamara , Vladimirov Sandra , Spasojevic-Kalimanovska Vesna , Kotur-Stevuljević Jelena , Bogavac-Stanojević Nataša , Bajić Branka
Published: December 2021

Spelt is a grain rich in bioactive compounds - different phytochemicals, so it is often mentioned in the context of being beneficial to human health. We aimed to investigate the antioxidant, anti-inflammatory, and anti-hyperlipidemic properties of the spelt grass juice. Twenty volunteers consumed a beverage once a day, by dissolving one dose in 200 ml of still water, for 2 months. All individuals were clinically and biochemically examined. The individual profiles of LDL and HDL particles were determined by polyacrylamide gradient gel electrophoresis, while the concentrations of non-cholesterol sterols were measured using the gas chromatography - flame ionization detector. High-sensitivity Creactive protein (hsCRP) was measured using the commercially available kit. Concentrations of oxidative stress status parameters were measured spectrophotometrically. Though no change was observed in lipid profile parameters, values of coronary risk (CRI) (p < 0.05) and the atherogenic indexes (AI) (p < 0.05) after the supplementation were lower compared with values before the dietary intervention. After analyzing the markers of cholesterol synthesis and absorption, we only noticed a significant increase in campesterol concentrations (p < 0.05). Moreover, we found a statistically significant reduction in hsCRP concentrations in subjects who underwent spelt juice supplementation (p < 0.001). A significant decrease in PAB (p < 0.001), AOPP (p < 0.05) and PON1 (p < 0.001) was recorded after supplementation. On the other side, TAS values and concentration of SH groups were significantly higher after the dietary intervention (p < 0.001, both). We suggested a possible beneficial effect of the spelt grass supplementation on the overall lipid profile, the prooxidant-antioxidant balance, and inflammatory parameters.
The pedagogy of languages for specific purposes: Developing key professional competences through a massive open online course for language teachers
Authors: Sarré Cédric , Skarli Poppy , Turula Anna
Published: December 2021

Although MOOCs dedicated to the teaching and learning of languages - Language MOOCs known as LMOOCs in the published literature - have gained popularity since 2008, this is not the case for language teacher education courses which are still rarely delivered in the form of MOOCs. Unsurprisingly, very little is therefore known about the effectiveness of such courses for Continuing Professional Development (CPD) and initial language teacher education. To fill this gap, a study was carried out based on a MOOC addressing the needs of current and prospective teachers of languages for specific purposes, which was designed by the consortium of the Erasmus+-funded CATAPULT project in 2019, and which has been run three times since its launch. The present study aims to probe the reactions of participants on the MOOC in terms of its usefulness and how it matched their reasons for joining. It is based on post-course surveys administered to course participants (n=50) as well as on feedback provided by instructors and on focus-group interviews with Teaching Assistants (n=4), whose role was to support instructors in providing feedback and comments in the third iteration of the course. Data analysis shows that if course participants' overall satisfaction has grown steadily between season 1 and season 3 of the course, it is partly because their initial objectives have been revised along the way. We also show that, from a MOOC designer's perspective, a combination of the xMOOC and cMOOC models seems to be relevant for any language teacher education MOOC and that creative solutions exist to address the issue of sufficient instructor presence in such online courses, however open and massive they may be.
Reshaping the educational landscape: During and after the COVID 19 pandemic
Authors: Boškić Nataša , Hausknecht Simone
Published: December 2021

The aim of this paper is to describe and analyze the response to COVID-19 and evolution through different models of online instruction during the pandemic at a large Canadian university. This paper primarily focuses on the approach taken by the Faculty of Education including the necessary restructuring of the processes, organization of the workforce, support configurations, and institutional constraints. The factors that impacted changes in the curriculum are examined. Three distinct phases were identified and compared: 1) remote teaching, 2) fully online using a combination of synchronous and asynchronous instruction, and 3) a diversity of hybrid approaches. The paper highlights a number of challenges experienced with online education during the pandemic. Each one of them presents both barriers and opportunities. The process has made way for a potential transformation of educational practice at North American universities. This will likely come as a combination of increased knowledge and practice of online learning during the pandemic, and as a need to reshape traditional institutional structures to reflect the shifted landscape of education. It has opened discussions on equity and accessibility, learner-centered design, and the potential for change in the classroom and educational programming.
Teaching and learning through Moodle, Google Doc and Zoom: Fostering student engagement in (a)synchronous learning environments
Authors: Eraković Borislava , Topalov Jagoda
Published: December 2021

Collaborative online learning depends on the teacher's ability to create conditions for student interaction and engagement. The paper presents the type of activities that can foster them, as well as the results of the investigation into the levels of student engagement in online learning environment which was created by a combination of Moodle, Zoom and Google Documents. The focus is on the level of student engagement in relation to the type of interaction in the online learning environment, their previous experience with blended learning and their overall attitudes toward online classes. Toward this end, a convergent parallel mixed methods study was conducted by means of a 30-item questionnaire constructed for the purpose of this study. The questionnaire included both Likert-scale questions, aimed at collecting quantitative data, and open-ended questions, aimed at collecting qualitative data. Qualitative analysis of the respondents' comments reveals that online tools are most valued for their interactive and collaborative potential (the availability of emoticons, chatting and screen sharing in Zoom, the possibility of small group collaboration in Zoom Rooms and whole class collaboration in Google Docs). The most important quantitative results reveal that all students report medium to high levels of online classroom engagement in the presented scenarios. However, while the students who had previous experience with blended learning constructed their engagement on the basis of both online peer collaboration (in Zoom Rooms) and teacher-fronted instruction (Zoom), those with no previous experience with blended learning formed their engagement only on the basis of small group work (Zoom Rooms).
The new virtual reality: Teachers' and students' perceptions and experience in English language learning and teaching online
Authors: Tanasijević Milena , Janković Nataša
Published: December 2021

An invisible, yet cruel virus has made the entire world face a new reality. Regardless of the degree to which online communication had already been used in educational settings before the Covid-19 pandemic, almost no one working in education had a feeling of being ready to work in the new circumstances. The process of migration to emergency remote language teaching and learning was stressful for all stakeholders in education - management, lecturers, students and their parents. Relying on the reflective and descriptive methods, the paper investigates the advantages and disadvantages of digital tools and platforms for remote collaborative learning, primarily ZOOM, Microsoft Teams, Jitsi Meet, and online learning management systems, recognised by the students and teachers within the mandatory and elective General English, ESP and EMI courses at the Teacher Education Faculty, University of Belgrade and Belgrade Metropolitan University. We conducted qualitative research by using structured and unstructured interviews and monitoring students' collaborative work. In the conclusion, the paper emphasises the aspects of educational technologies which have proved to be beneficial for everyone included in the process, without limiting the creativity, development of thinking skills and investigative spirit of students and lecturers while learning and teaching English.
Musealisation of the collection of black and white negatives from the Legacy of Aleksandar Simić
Authors: Tomić Milica
Published: December 2021

The paper follows the musealisation of the collection of black and white negatives from the Legacy of Aleksandar Simić, photographer of the Yugoslav Army in the homeland, i.e. its integration into the fund of the Museum of Yugoslavia, which has not yet collected materials of Ravna Gora provenance. Also, considerations were raised regarding the legal status of donated material in cultural institutions so that, in correlation with those considerations, questions related to the museological treatment of objects that arrived to the Museum would be answered. By that, we primarily mean the process of museal selection, i.e. valorisation of donated photographic material, its digital and documentary processing, and finally, consideration of the communication potential of the received collection in relation to the Museum's fund, which can raise numerous challenges for the researchers due to its heterogeneity and nature
Symbolism of the heart
Authors: Subotić-Krivokapić Jelena
Published: December 2021

From the earliest times, the heart has been one of the most studied organs. We can find records about this organ dating from the very beginning of written history, and we understand that different beliefs have been associated with it before. Very early on, people have noticed that the heart occupies a central place in the body, that the cessation of its work means death in both humans and animals, and that excitement changes the rhythm and the manner of its functioning. However, in addition to the physiological function of this organ, throughout history, the heart has been given various magical and religious meanings. In today's world, the heart has overcome the notion of a sign and has become a symbol of love, connection between people and affection. In this paper, different meanings of this symbol throughout history to the present day are presented, with the aim of understanding it in a cultural context.
Performing the activities of travel agencies in Serbia during the Covid 19 virus pandemic
Authors: Pavlović Nebojša , Krstić Miloš , Lakićević Marija
Published: December 2021

This paper aims to show the extent to which travel agencies in Serbia are ready to operate in crises, such as the current one caused by the Covid 19 virus pandemic, and what consequences such a pandemic can have on the entire tourism industry of a country. To achieve these goals, data from various researches conducted during 2020 on the impact of the Covid 19 pandemic on the world tourism industry were used, as well as relevant statistical data from international organizations and state institutions of the Republic of Serbia. The paper concluded that travel agencies are highly dependent on state aid, but these resources are also limited. All solutions proposed by the Government of the Republic of Serbia are time-limited until the end of 2021 when there is hope that the virus will weaken, in which the planned vaccination of the population should play a major role. For travel agencies to be able to overcome situations such as the virus pandemic in the future, they need to work on new programs and adapt to new target groups and markets. New sales channels need to be opened, in case of some new crises, so that the agencies are ready and able to survive under the given circumstances.
Corporate responsibility towards children: The state of affairs in Bulgaria
Authors: Krstić Nataša
Published: December 2021

Child-centred corporate responsibility has significantly evolved in the 21st century. Starting from banning child labour and restricting the advertising of unhealthy food and drinks, through corporate philanthropy, understanding and assessing the overall impact that the business sector can have on children throughout the value chain: in the workplace, marketplace, community and environment. Despite the advanced practice of adopting the "National Corporate Social Responsibility Strategy" and the commitment of the business sector to corporate responsibility in functional, organisational and budgetary terms, the opportunity to integrate children's rights into the strategies and policies of the state, and procedures and practices of the business sector in Bulgaria is missing. The paper gives an overview of how to enhance the National Strategy and expand the priority areas of corporate responsibility for the business sector to systemically improve children's rights in the business principles of responsible companies. As a result, it would allow monitoring the Bulgarian business sector's impact on the full range of children's rights, which is vital for a country facing a gloomy demographic picture and unmet labour market needs.
Instruments for ensuring payments within the deadlines in the law on obligations
Authors: Nikolova-Marković Aleksandra , Mitić Nikola
Published: December 2021

In this scientific paper, an analysis of the instruments for ensuring payments within the given deadlines in commercial transactions provided in the Law on Obligations has been performed. During the research and development of the scientific paper, the methods of analysis and the inductive-deductive method were used. Debt arrears as a legal institute is known as far back as Roman law. The Law on Obligations precisely defined the debt arrears. Pursuant to the provisions of the Law on Obligations, the debtor is late when he does not fulfill the obligation within the deadline set for fulfillment. Business conditions in our economy where many legal entities are insolvent and exceed the set deadlines for fulfilling obligations, have imposed the need for a precise legal regulation of instruments for improving the execution of payments within the given deadlines in commercial transactions between legal entities. The Law on Obligations provides instruments to improve the execution of payments in commercial transactions, which are used as additional instruments to the Law on Deadlines for Settlement of Monetary Obligations in Commercial Transactions.
Choosing, creating and developing managers
Authors: Dakić Pavle , Lojaničić Darko , Issa Hemed , Bogavac Milanka
Published: December 2021

Selection of people who will deal with management is crucial for the successful operation of any organization. This process involves respecting all relevant skills that candidates should possess, character traits, attitudes, and respect for the authority of the candidate by the group he or she should manage. The reason for conducting an adequate managerial selection procedure is the numerous findings that there are many management problems, but that there are very few sufficiently efficient managers. The aim of this paper is to point out the characteristics that need to be identified during the selection of managers in order to achieve successful business results.
Determinants of mobile phones usage for agricultural purposes among arable crop farmers in Iwo zone of Osun State, Nigeria
Authors: Ajayi Francis , Olanrewaju Khadijat , Akintunde Olaide , Bamiwuye Olubunmi , Agboola Timothy
Published: December 2021

This study examined the socio-economic factors underlining arable crop famers' use of mobile phones for agricultural-related purposes in Iwo Agricultural Development Program (ADP) Zone of Osun State. Multistage sampling procedure was used to select 150 arable crop farmers from whom primary data were collected with structured interview schedule. Data obtained was analyzed using descriptive statistics and ordinary least square regression analysis. Findings from this study revealed that most frequently used applications include voice call (99.3%), calendar (96.7%), calculator (96%) and torch light (95.3%). Most of the farmers strongly consented that mobile phones facilitated timely access to needed services (𝑋̅ = 4.74), eased production decision making (𝑋̅ = 4.54), enhanced increased income and profit (𝑋̅ = 4.50) and accessing personalized information about new farming techniques (𝑋̅ = 4.44). Major constraints identified for limiting the usage of phones for agricultural purposes were poor internet access (𝑋̅ = 3.73), inadequate electricity to charge t he mobile phone (𝑋̅ = 3.55), poor network access (𝑋̅ = 3.54) and high charges on services (𝑋̅ = 3.41). Gender (b= 4.337; P˂ .01), level of education (b= 16.358; P˂ .01), years of farming (b= 0.513; P˂.05), information sources (b= 0.645; P˂.01) all jointly had positive influence on farmers' use of mobile phones for agricultural information. It was recommended that higher capacity of female and arable crop farmers with lower level of education should be energized to utilize their mobile phones for enhancing their production activities.
Prevention procedures for nurses during the COVID epidemic in acute care hospital: Experiences from Republika Srpska
Authors: Knežević Darija , Trifunović Silvana , Dobrovoljski Daniela
Published: December 2021

The epidemic of the COVID-19 disease presented a great threat to the public health. The SARS-CoV-2 virus is still spreading on a global level, so the accurate global number of the infected or deceased from the COVID-19 disease is yet to be estimated or correctly counted. The nurses have always played a great role in the prevention and control of infections, isolations and public health protection. The nurses' work during the COVID-19 epidemic has created a history of nursing. Nurses have been on the front line of defense from the SARSCov-2 virus for over a year now and many of them are already on the edge of endurance, both mentally and physically. The professional security is the key for the work of nurses who are facing the danger of infection on a daily basis. The aim of this paper is to show the actions and measures taken by the nurses in Republika Srpska that could help in the decrease of the global transmission of the infection. Compared with some European countries and their fight with the epidemic, Republika Srpska has maintained the number of confirmed cases on a level which can be controlled. The prevention measures are the only thing that can stop the spread of this new infectious disease. In our biggest healthcare institution of a tertiary level, a large number of COVID procedures for nurses and other healthcare workers have been released. Nurses are, together with other healthcare professionals, actively involved in the interventions around the COVID-19 and will be one of the key factors that will stop the pandemic.
Beginnings and development of rugby in Singapore
Authors: Balasekaran Govindasamy , Boey Peggy , Yew Cheo
Published: December 2021

In those early days, some sports were played as a variation of another. Rugby was one of the sports which was played as a variation of football. Codification of rugby rules took place only in the middle 1800 century and hence, participants of rugby games were a mixture of players from other sports such as tennis and cricket. Also, there was no formal rugby association or players with Singapore representation. The players that played for Singapore were members of the SCC and employees of the BEIC. Back then, they competed in tournaments against the Malayan states and other teams.
Environmental assessment of greenhouse gases' emission in poplar plantation under extreme climate conditions of winter 2019/2020
Authors: Samardžić Miljan , Galić Zoran , Orlović Saša , Kovač Milica , Andreeva Irina , Vasenev Ivan
Published: December 2021

Global changes, triggered by increased anthropogenic emissions of greenhouse gases, are the main problem of modern ecology. Soil is the main terrestrial reservoir of carbon, in both organic and inorganic forms. Forests are the major asset in carbon cycling and the mitigation of global climate change in the terrestrial ecosystem, because forest ecosystems in a temperate climate area are the major sink of CO2 from the atmosphere. Carbon dioxide emission from the soil is the major component of greenhouse gas emission, as well as the main respiratory flux from most forest ecosystems. In circumstances of changed climate and increased frequency of extreme climate events, soil greenhouse gas emission from forest ecosystems is gaining more and more importance, having in mind that soil temperature is one of the main limitation factors of greenhouse gas emission from the soil. From the results obtained from the experiment it is evident that the unusually warm winter of 2019/20 had as a consequence higher emission of greenhouse gases from all three experimental plots. Differences in emission between plots and between days can be explained by three main factors: soil composition, temperature difference between days of sampling, and soil moisture content. With an increased frequency of extreme climate events, as a consequence of global climate changes, the occurrence of higher winter temperatures is expected to be more frequent in the future, affecting also higher emission of greenhouse gases from the soil.
Selecting tree species for reclamation of coal mine tailings based on physiological parameters
Authors: Stojnić Srđan , Bojović Mirjana , Pilipović Andrej , Orlović Saša
Published: December 2021

In the present study we compared the physiological performances of Prunus avium L., Robinia pseudoacacia L., Juglans nigra L., and Populus x euramericana cl. Pannonia, planted at the coal mine tailings of the Mining Basin "Kolubara" (Serbia), to assess the potential of different tree species for land reclamation. The measurements were conducted during three consecutive years characterized by contrasting climatic conditions (wet and drought). The results showed that the rate of net photosynthesis (A), stomatal conductance (gs) and transpiration rate (E) sharply declined in two dry years in all tree species. These trends were particularly evident for R. pseudoacacia and J. nigra, in which A, gs and E were twice as low during the dry years. On the other hand, R. pseudoacacia and P. x euramericana cl. Pannonia seedlings were characterized by the highest water-use efficiency and intrinsic water-use efficiency during the dry years, indicating that these species are more efficient responders to drought, due to their ability to maintain a balance between the loss of water and the CO2 assimilation rates. The survival rate of the examined tree species was high (>86%) and increased in the following order: P. avium < J. nigra < R. pseudoacacia < P. x euramericana cl. Pannonia. Based on the obtained results we recommend R. pseudoacacia and P. x euramericana cl. Pannonia as a good solution for afforestation and revitalization of degraded habitats, such as coal mine tailings, although high survival rate, observed in P. avium and J. nigra, makes these two species a candidate for planting during degraded sites reclamation, as well.
Climate change within Serbian forests: Current state and future perspectives
Authors: Stojanović Dejan , Orlović Saša , Zlatković Milica , Kostić Saša , Vasić Verica , Miletić Boban , Kesić Lazar , Matović Bratislav , Božanić Danijela , Pavlović Lazar , Milović Marina , Pekeč Saša , Đurđević Vladimir
Published: December 2021

Extreme weather conditions, namely droughts, heat waves, heavy rains, floods, and landslides are becoming more frequent globally and in Serbia as a result of climate change. Generally, various parts of human society are affected by changing climate conditions. Forest ecosystems are one of the most sensitive systems to weather and climate. In that sense, small changes may lead to large disturbances including forest decline, outbreaks of insect pests and diseases and eventually mortality. In Serbia, the average temperature in forest ecosystems of the most important and abundant forest tree species has risen for more than 1°C in the last thirty years (1990-2019) in comparison to the previous period (1961-1990). During the last thirty years, the northern and western parts of Serbia experienced an increase in precipitation as opposed to the southern and eastern parts of the country. If one takes a closer look at the climate within a particular forest stands, it would seem that the effect of precipitation decrease is stronger in less humid parts of a tree species range. In this paper, we discuss various aspects of climate change impacts on forests and forestry, including forest ecology, genetics, physiology, pests and diseases, ground vegetation, monitoring, reporting and verification system, climate change litigation and perspectives of forests in the 21st century in Serbia.
Inhibition of corrosion of mild steel by an alcoholic extract of a seaweed Sargassum muticum
Authors: Arockiaraj Mallika , Kirubavathy Suyambulingam , Al-Hashem Abdulhameed , Santhammal Rajendran , Joany R.M. , Lačnjevac Časlav
Published: December 2021

An alcoholic extract of a sea weed Sargassum muticum has been used to control corrosion of mild steel in 0.5 N HCl. Weight loss method and Electrochemical studies have been used in this study. Weight loss study reveals that 500 ppm of the inhibitor offers 99.25 % inhibition efficiency. Polarization study reveals that the inhibitor functions as an anodic inhibitor at higher concentration. The AC impedance spectra confirm the formation of a protective film on the metal surface. Adsorption of inhibitor molecules on the metal surface follows Langmuir adsorption isotherm.
The diachronic perspective on the morphology of compound adjectives
Authors: Gavranović Valentina , Prodanović Marijana
Published: December 2021

This paper focuses on a diachronic study of compound adjectives found in the Old and Middle English texts of the Helsinki Corpus. The compound adjectives of both periods are analysed, and further classified into types on the basis of the word class their constituent elements belong to. The aim of the research is to follow the development courses of compound adjective types in the two language periods and to investigate what happened to them in Modern English. The comparison of the types results in the description of the character of these changes, illuminating which Old English types survived into the subsequent periods, which were lost from the language, and what were the new ones introduced in the Middle English period.
An addition to the study of crime of Isija Feratagić
Authors: Zarković Vesna
Published: December 2021

This paper discusses the crimes against the Serbs of Mitrovica and the surrounding area, committed by the Albanian criminals, among whom Isija Feratagić stood out. His atrocities significantly affected the position of the Serbian population and often led them to leave their households and emigrate to the Kingdom of Serbia. Turkish authorities were often uninterested in preventing the Albanians incidents, and military interventions mostly escalated into a conflict between the army and the Albanians. Such a situation had a negative impact on the lives of Serbs, not only in Mitrovica and its surroundings, but also in the entire province of Kosovo. The Serbian people in Old Serbia, with the support of the Government from Belgrade and the representatives of Russia, sent complaints to the Turkish authorities and the Sultan in Constantinople countless times, as well as to the representatives of the great powers. Under their influence, the Porte was forced to accept the implementation of reforms. Isija Feratagić, who in his actions was guided by personal interests and the lowest impulses, was pushed into the background and is no longer found in the reports of the consuls.
The role of religion and its influence on conflicts in Nigeria
Authors: Bursać Boris
Published: December 2021

At the very end of colonial rule, UK established Islam and Christianity in Nigeria as the two dominant religions with the middle belt region of Nigeria as the battle ground. Before their final departure, they secured and formed several ethnic and religious lines, which in the postcolonial era were used by political elites as a way to fight for state power. As such, on the basis of the abuse of political and religious elites, and on the basis of ethnic, religious and regional divisions, a deeply fragmented Nigeria as we know it today emerged. With colonial domination, sudden transitions, the power of society was destroyed to such an extent that it became incapable of regulating human passion. The situation is further heated by leading elites who manipulate religious identity, where as a result appears that the north of Nigeria, mostly Muslim, tends to Islamize the whole Nigeria, and the south, mostly Christian, strives to defend Christianity and the constitutional secularism of the state. In such a situation, religion, instead of calming passions and tensions, thanks to its leaders, opens the way to conflict, violence, extremism, and, finally, terrorism. The central understanding of the formation of the identity of religion and its transformation from conflict to violence is the rise of religious extremism throughout the country. Extremist groups show significant intolerance towards members of their own and other religions, react to social, economic and political crises of Nigerian politics, of course in religious terms, which later leads to conflicts. The integration of religion into Nigerian politics, which we can thank the colonial rulers, is one of the leading problems and it is precisely this that stands behind religious violence and political instability in the country.
Dotted grid and square grid in teaching geometry in lower grades of elementary school
Authors: Maričić Sanja , Stojkanović Jelena
Published: December 2021

This work aims to underline the advantage of use of dotted grid and square grid as auxiliary tools for visualization in adoption of basic notions in geometry and problems solving in geometry in lower grades of elementary school. Visualization is an important part of cognitive process in mathematics while square grid and dotted grid help students visualize mathematic tasks therefore being significant. Although they are used in every grade of the initial four grades of primary school in the process of teaching geometry topics, neither students nor teachers use their advantages to a sufficient extent. The advantages of their use have been confirmed in the research conducted with the students of second and fourth grade in two primary schools. By analyzing of the obtained test results, we concluded that the use of the square grid increases the success in problem solving. Considering that notebooks with a square grid are used in mathematics teaching, the square grid should be used especially in the field of geometry.
Identification of the flow experience in gamified educational environment
Authors: Aleksić Veljko , Ristić Olga
Published: December 2021

Determining and understanding the user experience in gamified educational environments is a contemporary challenge, especially when analyzing the flow experience (balance of challenge and skills, conscious actions, clear goals, clear feedback, sense of control, etc.). The reason for this lies in the assessment tools that most often created and implemented to separate the user from the experience of flow and/or cannot be applied en masse.The paper presents the results of a study in which flow experience was modeled based on data logs (e.g. number of mouse actions or average response time) in gamified educational environment on a sample of 31HE students. The results indicate the existence of correlations between data logs and flow experience dimensions.
Les cerf - le canthare - les quatre fleuves du Paradis dans la mosaïque chretienne de Tunisie. Les catechumenes et le Bapteme / Les fideles et l’Eucharistie : une contribution a l’iconongraphie paleochretienne d’Occident
Authors: Moreno P. Silvio
Published: December 2021

The figures of deer, of kantharos (cantharus), and the four rivers of Paradise are all part of a rich catalog of early Christian iconography in Tunisia. We often find this iconography in the mosaics of baptisteries, as well as mosaics in the basilicas. The presence of such iconographic figures in all Tunisia, whether in prominent basilicas or in small rural churches reflects the unity of the Christian faith throughout the territory, as well as the firmness of the Christian traditions that came from the East. In this article, we will first explain the spiritual and Christian signification of these iconographic figures and afterwards we will present the models in mosaics found in Tunisia within their archeological context.

Las figuras de los ciervos, del cántaro y de los cuatro ríos del Paraíso son parte del rico repertorio de la iconografía paleocristiana en Túnez. Estas imágenes plasmadas especialmente en mosaicos, las encontramos frecuentemente en contexto bautismal como decoración de pavimento, y en contexto eucarístico decorando el suelo de las basílicas cristianas. La presencia de estas imágenes iconográficas en Túnez, ya sea en las grandes basílicas como en las pequeñas iglesias rurales, muestra la unidad de la fe católica en todo el territorio como también la solidez de las tradiciones cristianas heredadas de Oriente. Este artículo explicaremos primero el significado espiritual de estas figuras y luego presentaremos los ejemplares que la arqueología ha encontrado en las distintas regiones de Túnez.

Les représentations de cerfs, de kantharos (cantharus) et des quatre fleuves du Paradis font partie d’un riche répertoire dans l’iconographie ancienne tunisienne. Souvent, ces représentations iconographiques se retrouvent dans les mosaïques des baptistères ainsi que dans les celles des basiliques. La présence de ces types d’images dans toute la Tunisie, que ce soit dans de grandes basiliques ou dans de petites églises rurales, reflète l’unité de la foi chrétienne sur tout le territoire, ainsi que la force des traditions chrétiennes venues d’Orient. Dans cet article, nous expliquerons d’abord la signification spirituelle et chrétienne de ce style de décoration,que nous appuierons à travers des modèles dans les mosaïques trouvés en Tunisie dans leur contexte archéologique
La importancia política y militar de las revueltas bagaudas en época tardorromana
Authors: Sanz Huesma Francisco Javier
Published: December 2021

In this article I intend to show that the bagaudian revolts that occurred in the 3rd and 5th centuries had little military and political importance. To do this, I will confront a large part of modern historiography, which considers these revolts as a determining part of the fall of the Western part of the Roman Empire. The study of the response by the imperial government and the careful analysis of the sources will allow me to support my hypothesis.

En el presente artículo pretendo demostrar que las revueltas bagaudas producidas en los siglos III y V tuvieron poca importancia militar y política. Para ello, confrontaré con gran parte de la historiografía moderna, que considera estas revueltas como parte determinante de la caída de la parte occidental del Imperio Romano. El estudio de la respuesta por parte del gobierno imperial y el análisis detenido de las fuentes, me permitirá sostener mi hipótesis.
Arayüz Mutasyonlarının Protein Etkileşimlerine Tesirini Tahmin Eden Algoritmalarla HADDOCK’un Performansının Karşılaştırılması
Authors: KOŞACA Mehdi , ŞAMİLOĞLU Eda , KARACA Ezgi
Published: December 2021

Hücresel süreçler proteinlerin birbirleriyle yaptıkları etkileşimlerinin üzerinden ilerler. Bilinen protein-protein etkileşimleri, etkileşim arayüzlerinde meydana gelen nokta mutasyonları ile yeniden düzenlenebilir. Bu düzenleme sonucunda, mevcut etkileşimler bozulabilir ve bu durum, kanser ve nörodejenaratif hastalıkların oluşmasına yol açabilir. Mutasyonların bu kadar hayati bir etkisinin olabilmesi, onların protein etkileşimleri üzerindeki etkisinin tahminini, hesaplamalı biyolojinin aktif çalışma alanlarından biri haline getirmiştir. Mevcut mutasyon etki tahmin algoritmalarının yanında, ünlü kenetlenme programı HADDOCK, protein-protein etkileşim arayüzünde görülen mutasyonların, ayrıntılı bir şekilde modellenmesine olanak sağlamaktadır. Bu çalışmamızda, HADDOCK’un literatürde önerilen kullanım parametrelerini optimize ederek, mutasyon tahmin performansını iyileştirmeyi hedefledik. Bu kapsamda yaptığımız karşılaştırma çalışmamızda, HADDOCK’un en optimum parametre seçkisi ile bile alternatif bir mutasyon tahmin algoritması olan EvoEF1’in performansını geçemediğini ortaya koyduk. Bunun yanında, EvoEF1’in performansını EvoEF2, FoldX ve UEP tahmin algoritmalarınınki ile karşılaştırdığımızda, EvoEF1’in en iyi performansı gösterdiğini gözlemledik. Dolayısıyla, bu çalışmamızın sonucu olarak, EvoEF1 programının protein-protein etkileşimlerinde nokta mutasyonunun etkisini tahmininde öncelikli olarak kullanılmasını önermekteyiz.
Kalkon Türevli Bileşiklerin Covid-19 Tedavisine Yönelik SARS-CoV-2 Main Protease Enzimine Karşı Bağlanma Mekanizmasının Moleküler Kenetlenme Yöntemi ile Aydınlatılması
Authors: TATAR Gizem , KURŞUN AKTAR Bedriye Seda
Published: December 2021

SARS-CoV-2’nin neden olduğu COVID-19 hastalığının bulaşma hızının ve ağır hastalık oluşturma potansiyelinin yüksek olması dolasıyla Dünya Sağlık Örgütü tarafından global bir pandemi olarak tanımlanmıştır. Günümüzde COVID-19 pandemisini önlemek amacıyla birçok ilaç çalışmaları yapılmakta olup ancak henüz tedavisine yönelik etkili ve güvenli bir ilaç mevcut değildir. Bu araştırmaların hızlı ve az maliyet ile klinik aşamalara geçmesi için SARS-CoV-2'in replikasyon ve transkripsiyon mekanizmasında etkili olan proteinlere karşı birçok bileşik bilgisayar destekli ilaç tasarımı yöntemleri ile taranmaktadır. Bu sayede, etkinliği deneysel çalışmalarla test edilmiş bileşiklerin SARS-CoV-2’e ait önemli yapısal proteinlerine yönelik etkinlikleri moleküler seviyede aydınlatılmaktadır. Bu çalışmada daha önce deneysel çalışmalar ile etkinliği belirlenmiş 32 adet kalkon türevli bileşiklerin moleküler kenetlenme yöntemi ile SARS-CoV-2 Main protease (Mpro) enzimine yönelik in siliko biyolojik etkinliği ve moleküler mekanizması incelenmiştir. Bu çalışma sonuçlarına göre, bileşik 5, 6, 14, 25 ve 32 hedef proteine ait referans bileşik (N3)’e göre SARS-CoV-2 Mpro'ya karşı daha iyi bağlanma afinitesi göstermişlerdir. Elde edilen bu veriler sonucunda, COVID-19 hastalığının tedavisine yönelik biyolojik etkinliği yüksek kimyasal bileşikler belirlenmiştir. Bu bilgiler, COVID-19 tedavisi için daha etkili antiviral ilaçların geliştirilmesi için yapılacak klinik çalışmalara rehberlik edecektir
Foreign policy priorities of the United States in Asia-Pacific: impact of the concepts “Pivot to Asia” and “America First”
Authors: Novoseltsev Sergey Vladimirovich , Ryzhov Igor' Valer'evich
Published: December 2021

This article analyzes the influence of the United States upon the political processes in APAC based on the example of territorial disputes in the South China Sea. An overview is given to the foreign policy concepts “Pivot to Asia” and “America First” proposed by the administrations of B. Obama and D. Trump respectively, the priorities outlined therein, as well as importance of the  conflict in the South China Sea for the US foreign policy. The author examines the practical steps taken by Washington in relation to the South China Sea question, as well as concludes on the objectives of the United States and possible steps in this direction. Although the theme of territorial disputes in the South China Sea, including the degree of  involvement of Washington into this issue, as well as other East Asian affairs, is quite popular in the scientific works,  the novelty of this research consists in the innovative approach towards consideration of the conflict in the South China Sea not as a separate problem of international relations, but as the foreign policy instrument of superpower and regional powers (including the United States) used for formatting the East Asian regional subsystem of international relations and structuring the Greater East Asia macroregion to their benefit.