bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of the Cooperative Learning-based Flipped Classroom Model on Chinese Students’ English Proficiency in the EFL Context
Authors: Meixiao Lin
Published: May 2023

This study investigates how the cooperative learning-based flippedclassroom paradigm affects the English language ability of Chineseuniversity students in an EFL (English as a Foreign Language) setting. Itwas decided to use a quasi-experimental study approach. In an integratedskills course, the experimental group engaged in flipped classroomactivities based on cooperative learning (CL) for 80 minutes over the courseof 24 sessions. Only standard whole-class instruction was given to thecontrol class. The students’ spoken English proficiency was evaluatedusing an oral pre- and post-test before and after the intervention. Thenational written CET4 (College English Test Band 4) scores were adoptedfor comparing their general proficiency. The quantitative results revealedthat the experimental class made greater gains in oral proficiency than thecontrol class. Despite the fact that there was no significant difference in thewritten CET4 scores (general proficiency) between the two classes, theexperimental class had a greater pass rate than the control class. Thedeployment of the CL-based flipped classroom paradigm in the EFLenvironment is further examined in connection to the results.
IMPROVING READING COMPREHENSION OF THE EIGHTH-GRADE STUDENTS OF SMP (SLUB) SARASWATI 1 DENPASAR THROUGH KWL
Authors: Adhinatha Dede Putra Prawira , Budiarta I Komang , Krismayani Ni Wayan
Published: May 2023

Reading comprehension is the process of acquiring knowledge and comprehending the meaning of printed items. It is a necessary language ability that must be mastered. Initial research revealed that the majority of the eighth-grade students of SMP (SLUB) Saraswati 1 Denpasar struggled with reading comprehension, particularly identifying general and specific information, textual meaning, and textual reference. Moreover, the purpose of the study was to determine whether the reading comprehension of the eighth-grade students of SMP (SLUB) Saraswati 1 Denpasar could be enhanced using KWL (Know Want Learn). To achieve the objective, the researcher performed classroom action research in two cycles. Research instruments, including tests and a questionnaire, were used to obtain the necessary data. Afterwards, the data were examined by comparing pre- and post-test findings. On the basis of the findings, it was evident that the subjects’ mean scores improved significantly between the pre- and post-tests. As supporting data, the questionnaire was also completed at the end of the last cycle; the results indicated good responses to the implementation of KWL. Therefore, it could be concluded that implementing KWL could increase reading comprehension of the eighth-grade students of SMP (SLUB) Saraswati 1 Denpasar.
O impacto da Covid-19 na produtividade docente feminina na pós-gradução em ciências humanas na UFS (2019-2021)
Authors: Mello Janaina Cardoso de
Published: May 2023

A pandemia da Covid-19 atingiu vários setores da sociedade laboral, principalmente a educação e a atividade docente. As dificuldades com a produtividade científica feminina na universidade, que enfrentava a sobrecarga do trabalho doméstico e familiar, se acentuaram no modelo home office. O objetivo geral deste trabalho consistiu em compreender como a pandemia do Coronavírus - Covid-19 -, impactou a produtividade das professoras nos programas de pós-graduação das áreas de Ciências Humanas na UFS. Adotou-se a metodologia quali-quantitativa na interpretação das informações quantitativas e dos dados qualitativos via observação, interação participativa e análise do discurso dos sujeitos. Foi estudada a produtividade de 72 professoras, de dez programas de mestrado e doutorado, com vínculos nas licenciaturas no período de 2019 a 2021. Foram coletados dados no portal institucional da UFS e nos Currículos Lattes do CNPq. Identificou-se que apenas um programa teve a produção feminina duramente impactada pelos efeitos da pandemia, configurando 10% da amostra, enquanto 40% das docentes conseguiram manter uma constância com índices mais baixos. Aproximadamente 20% retomaram o crescimento após uma queda brusca e 15% já demonstravam baixa produtividade antes da pandemia. O destaque ocorreu com 15% de docentes que elevaram muito seus níveis. O resultado reporta a sobrecarga de trabalho em casa, o adoecimento, a perda de sentido, o isolamento e a visão de produção como terapia de desligamento da realidade de medo e morte experimentada no mundo. Diante da baixa representatividade quantitativa das mulheres em alguns departamentos e programas de pós-graduação, faz-se necessária a adoção de políticas públicas institucionais para o fortalecimento da presença feminina na docência, de sua pesquisa e produtividade científicas no ensino superior, bem como o acompanhamento na mudança dos comportamentos de exclusão por homens que ocupam o status quo na universidade.
Evaluasi Kondisi Fisik Tim Futsal SMK Nasional Malang
Authors: Mbadi Stefan Umbu , Spes Nokar Perpetius , Alfrianto Andi Bagus , Nanda Hanief Yulingga
Published: May 2023

Atlet futsal harus memiliki intelegensi yang tinggi, karena berguna untuk pemain di dalam lapangan untuk memutuskan dengan cepat keputusan yang akan di ambil di lapangan. Kecepatan berfikir dan bertindak adalah salah satu prinsip dasar dasar futsal. Olahraga futsal paling utama yang harus dimiliki atlet futsal adalah daya tahan, karena ukuran lapangan futsal yang relative kecil kemungkinan pemain futsal akan berlari sepanjang permainan. Dari hasil penelitian latar belakang saya sebagai peneliti ingin mengevaluasi kondisi fisik terutama daya tahan tim futsal SMK Nasional Malang. Penelitian ini bertujuan untuk mengetahui daya tahan pemain futsal SMK Nasional Malang. Penelitian ini merupakan penelitian Kuantitatif Deskriptif. Pada tes daya tahan, dari 8 atlet yang diketahui bahwa kategori “cukup’ sebanyak 3 atlet, kategori “kurang” sebanyak 4 atlet, dan kategori “kurang sekali” sebanyak 1 atlet.
Analysis of Governor's Regulation Concerning the Implementation of Large-Scale Social Restrictions in Handling Covid-19
Authors: Maranjaya Ahmad Kahar , Faruqi Rifani Firyal
Published: May 2023

The purpose of the issuance of this Government Regulation concerning Large-Scale Social Restrictions is to ensure that the Regional Government does not take individual steps, so that with the existence of this Government Regulation, steps handling of Covid 19 can be in line with the Central Government. For this reason, the author is interested in conducting research with the aim of finding out whether Pergub Number 88/2020 is the implementing regulation of the legislation. This study uses a normative juridical approach. In conducting the research, the writer uses the library research method to review a statutory regulation, which can be obtained from a literature research by using primary, secondary, and tersier legal materials. Based on the discussion of this research, it is concluded that the Governor's Regulation Number 88 of 2020 concerning the Implementation of Large-Scale Social Restrictions (PSBB) in Handling Corona Virus Disease 2019 (Covid-19) which was issued first before the regional regulations that were formed later needed to be updated in substance into a Regional Regulation and issued back to the new Governor Regulation. This step is taken to ensure the synchronization of the national legal system by means of vertical synchronization and horizontal synchronization. In Government Regulation No. 38 of 2007 which is a derivative of Law no. 32 of 2004 regulates the division of government affairs between the Government, Province, and Regency/City.
Analysis of the Influence of Dynamic Capabilities on Company Performance Mediated By Competitive Advantage
Authors: Yohanes Yohanes , Margaretha Farah , Sudibyo Yvonne Augustine
Published: May 2023

This research has a purpose to find out how the influence of Dynamic Capabilities, either directly or indirectly on Company Performance through Competitive advantage as a mediating variable. Design / methodology / approach – data collection in the form of distributing questionnaires to collect a sample of 309 manufacturing companies in Indonesia. In any case, to analyze the data, the analytical method used is the Structural Equation Model (SEM) to assign the phenomenon and the tool used is AMOS 22. The result of this research is that Dynamic Capabilities, affect the upgrade in Competitive Advantage significantly and positively. Dynamic Capabilities, affect the positive and significant upgrade in Company Performance. Competitive Advantage affects the Company's performance improvement positively and significantly. The mediating influence of Competitive advantage upgrades the influence of Dynamic Capabilities, on improving Company Performance. Practical implications – this research has shown that Dynamic Capabilities have affected Company Performance through the practice of Competitive Advantage. In any case, This research describes that the company's performance is influenced by different competitive priorities as well as internal capabilities and external capabilities. Originality / value - This research analyzes sustainable innovation predicated on dynamic capabilities in manufacturing companies in Indonesia, by collecting managers' perceptions of modification in the external environment that affect the adaptation and alignment of the company's maneuver, which has an impact on the applied business model.
Changes of Work Condition and the Mc Kenzie Ergonomic Intervention Could Decrease of Musculoskeletal Disorder and Work Fatigue Among “Dodol” Industry Workers With Low Back Pain
Authors: Prabashanti Ni Nyoman Devi Yani , Adiatmika I Putu Gede , Purnawati Susy
Published: May 2023

An unergonomical working condition could cause low back pain due to wrong position. For those condition affected to work production and the worsens is disability.  This study aims to change of work condition by gave break time actively with the solution placed of water and all tools equipment distance, and prevention with McKenzie ergonomic intervention to decrease of musculoskeletal disorders among ‘dodol’ industry workers. This experimental study used treatment by subject design and there were 12 samples study. Period 1 of this study is working condition of process mixing “dodol” without any intervention given by researcher, meanwhile period 2 samples already work with changes strategy based on ergonomic and washing out period, also adaptation held in along period. Low Back pain was measured by Oswestry Disability Index (ODI) and productivity based on comparison product in a day, and score for low back pain measured per work time. Data was analysed with SPSS ver.16 and α=0,05. Results of this research that there was significant difference statistically among variable, and difference of mean is 7,33 or there was decreased of musculoskeletal disorders 10% from 54,31±0,79 to 45,04±0,88. The conclusion of this study that changes of work condition with ergonomic basic could decrease musculoskeletal disorders among “dodol” industry workers with low back pain syndrome at Penglatan, Buleleng Regency.
Improvement Of Working Condition Through A Participatory Ergonomics Approach Decrease Low Back Pain Complaints And Increase The Productivity Of Tailors
Authors: Putri Fadma , Adiatmika I Putu Gede , Dinata I Made Krisna
Published: May 2023

Tailors work in a static position and bend over with a relatively long duration of workPostural muscle load on tailors results in the risk of complaints of low back pain which affects the productivity of tailor. The aim is to know the effect of improving working conditions through a participatory ergonomics approach to reduce low back pain complaints and increase tailor productivity.The method uses of experimental research with treatment by subject design, involving 9 samples selected by simple random sampling. Period 1 sample is working with conventional working conditions. Period 2 samples worked with improving working conditions through a participatory ergonomics approach. Washing out period and adaptation are given between the two periods. Complaints of low back pain were measured by the Oswestry Disability Index, while productivity was based on a comparison between the number of stitches/day and the score for complaints of low back pain per working time. The results showed that improving working conditions through a participatory ergonomics approach had a significant effect (p < 0.05). There was a decreasing in low back pain by 11.87% from an average of 48.67±1.73 to 42.89±1.76 and an increasing in productivity of 42.10% from an average of 0.038±0.004 to 0.054±0.005.
The Effect Of Principal Supervision On Teacher Performance Improvement
Authors: Hidayat Amirul
Published: May 2023

The goals to be achieved from a principal's supervision are goals that are in accordance with predetermined standards. Therefore, to ensure the quality of teaching and learning services or good teacher performance, the supervision of the principal is important in providing guidance, guidance and supervision to teachers. This supervision and improvement is something that must be highlighted to become a benchmark for improving the teaching and learning process that will result in good quality education. The research used quantitative method research was carried out for 3 months starting from September to November 2019. The place that became the research center was at SDS IT Al Fajar Sungai Pakning. The subject in this study was the principal while the object in the study was the teacher at SDS IT Al Fajar. The population in this study were principals and teachers. The samples taken by the researchers were SDS IT teachers, Al Fajar Sungai Pakning, totaling 35 people. After the authors conducted data management through questionnaires and analyzed the data, it can be concluded that the supervision of the principal at Sds It Al Fajar Sungai Pakning was categorized as "good" with a percentage value of "100%.
Development Of Production-Based Learning Models For Optimizing The Technopreneurship Spirit In Higher Education
Authors: Cik Idi Jang
Published: May 2023

Development of production-based learning models carried out to seek validity, practicality and effectiveness in the application of technopreneur courses in universities. Production-based learning model is an alternative to develop students' skills, attitudes and knowledge that are relevant today. Research and development is used to test the validity of experts through Focus Group Discussions (FGD), then limited trials are carried out in the development of this production-based learning model. From the processes carried out, a new syntax development is produced which refers to the previous model syntax. The development of the syntax sequence is (1) an analysis of the curriculum and characteristics of students; (2) Product identification and analysis; (3) Make important questions about the product; (4) Question mapping; (5) analysis of equipment and materials needed for the product to be made; (6) create a business plan (7) product manufacturing process; (8) small-scale operations that include promotion and sales, (9). Summative evaluation; From the stages of the research carried out, the resulting Aiken's V value is 0.812 with a valid category, while the calculation of the Effectiveness value gets the results of 82.22 (effective) and Practicality of 89.33 (very practical). So it can be said that the production-based learning development model has validity, practicality and effectiveness values ​​that meet the requirements, so it is feasible to apply.
A step towards Smart Agriculture System
Authors: H .Alhakeem Mohammed Ridha
Published: May 2023

Iraq is built on agriculture. As a result of population growth, accidents, and contamination, India's agriculture sector is currently declining in quality. Therefore, despite the speed and accuracy of the work, we have attempted to simplify the agriculture industry and restrict human involvement. In order to make this a reality, we are using IOT as the regulator and a few sensors that are connected to it. A rancher must occasionally screen the field for a respectable yield. This paper focuses on crop observation using IoT devices that would provide ranchers with real-time field data. Once obtained, the information is evaluated and documented for further use. This task was assigned to increase harvest efficiency and take preventive action against production loss. Additionally, we included a coordinated structure for waste administration. By enabling brilliant activity that is satisfying and independent, the Internet of Things (IOT) has been playing an awesome role in simplifying human lives. Comparing the suggested framework to the current garbage assortment framework, the movement distance is reduced by 30% on average in the approved circumstance. By enabling continuous observation and an optimized route, it reduces the cost of fuel and human labor, upgrading and improving the system.
The effect of Additional Manalagi (Malus Sylvestris) Apple Cider Juice on Chewy Candy's Sensoric Quality
Authors: Safira Farihah Bilqis , Mariani Mariani , Dahlia Mutiara
Published: May 2023

This study aims to study the effect of adding manalagi apple cider to the sensory quality of chewy candy on the aspect of color, taste, aroma, and texture. This research was conducted in the Analysis and Engineering Laboratory of the Culinary Education Study Program Faculty of Engineering State University of Jakarta and was carried out in September 2020. This study uses an experimental method with different percentages namely 20%, 40%, and 60% then a hedonic test is carried out on 15 moderately trained panelists. The results of the descriptive analysis show the average value in the color aspect 4.4 light green categories with a percentage of 40%, in the sweet taste aspect 4.8 categories of sweetness with a percentage of 40%, in the manalagi apple flavor aspect 4.2 feels manalagi apple with a percentage of 40%, in the aspect of manalagi apple aroma 3.9 in the manalagi apple-scented category with a percentage of 40%. Based on the hypothesis test using the Kruskall-Wallis test, it was stated that the texture aspect was continued with the Tuckeys test and the best result obtained was 4.0 which was the best sensory quality product of chewy candy in the addition of Manalagi apple cider.
Implementation of Active, Creative and Fun Learning (PAKEM) and Motivation in Improving Student Learning Outcomes
Authors: Santoso Imam , Saragih Winner
Published: May 2023

The purpose of this study was to determine the effect of PAKEM (active, creative and fun learning) and learning motivation on student learning outcomes in science subjects at 31 State Junior High Schools in Tangerang City. This study uses a quantitative approach, descriptive and associative types. The population in this study was 554 students. The sampling technique used in this study is the Slovin formula. By using the slovin formula technique, a sample of 41 students of 31 Tangerang City Junior High School was taken as respondents in this study. The results of this study indicate that: 1) the tcount value for X1 (Active, Creative and Fun Learning)) is 5,831 while the ttable value for n = 41 is 2,020. So 5,831 > 2,020, Can Key partially affect student learning outcomes. 2) the t-count value for the X2 variable (Learning Motivation) is 3.399, while the ttable value for n = 41 is 2,020. So 3.399 > 2.020, the key can be partially that Learning Motivation has an effect on Student Learning Outcomes. 3) ANOVA test or Ftest or Fcount obtained a value of 39.815 which is greater than Ftable of 2.83 or 39.815 > 2.83 with a significant level of 0.000 because 0.000 <0.05, it can be said that the Pakem variable (Active, Creative and Fun Learning) (X1) and the variable of Learning Motivation (X2) together have an effect on the variable of Student Learning Outcomes (Y).
Document Storage Needs Analysis of Medical Record Rack and Spacious Room in Clinical Pertamedika Main Hall
Authors: Ervina Ervina , Jeriatin Vela
Published: May 2023

Storage rack is one of the hospital equipment that functions to store medical record documents with the availability of medical record document storage racks in accordance with the storage capacity of medical record documents, there will be no buildup of documents on the floor. This study aims to determine the number of shelves needed for storing medical records of patients at the Pertamedika Pendopo Main Clinic in 2021. This research used a quantitative descriptive method by describing the results of the research and comparing it with the theory then conclude it. The study was conducted in June 2021 at the Pertamedika Pendopo Main Clinic. The population and sample used are storage shelves and all patient medical record documents. The instruments used in data collection include observation and interviews. The results of this study indicate that the number of visits of all patients at the Pertamedika Pendopo Main Clinic in 2020 was 5,197. The number of storage shelves needed at the Pertamedika Pendopo Main Clinic in 2021 amounted to 35 storage shelves with a length of 103 cm and a height of 224 cm. And the amount of space needed to accommodate 35 storage racks with a space between 90 cm and a distance of 150 cm is a room area of 157.59M ^ 2 with a length of 15.3 m and a width of 10.3 m. So that the shelf needed can be fulfilled and can accommodate all the patient's medical record documents systematically and does not complicate the officer in the process of storing and searching the patient's medical record document.
Late Onset Acquired Prothrombin Complex Deficiency (APCD) in a 27 Days Old Infant: a Rare Case Report
Authors: Farahdina Farahdina , Wahyuni Ima Sri
Published: May 2023

Acquired prothrombin complex deficiency (APCD) is a disease that occurs due to a deficiency in the coagulation factors that make up the prothrombin complex (II, VII, IX, and X), which are highly dependent on the presence of vitamin K in carrying out their functions. This study uses a qualitative method with the type of case report. The sampling technique used in this study the author uses the Random Sampling technique or by using the Slovin formula in Husein Umar. Where each population has the same opportunity to be selected as a sample in this study. Based on the analysis and discussion, it can be concluded that APCD is a disease with a high mortality rate, and those who survive are also threatened with disability for the rest of their lives. So that early detection and holistic treatment need to be done to prevent death and disability.
Arbeitskräfteknappheit: Chancen auf gute Arbeit für alle
Authors: Derndorfer Judith , Haim Daniel , Marterbauer Markus , Mokre Patrick
Published: May 2023

Der österreichische Arbeitsmarkt schaut derzeit auf den ersten Blick für Arbeitende erfreulich aus: Viele offene Stellen kommen auf immer weniger Arbeitssuchende und bei den letzten Kollektivvertragsrunden sind trotz hoher Inflation Reallohngewinne erzielt worden. In der wirtschaftspolitischen Debatte geben sich derweil die Begriffe „Arbeitskräftemangel“, „Vollbeschäftigung“ und „Fachkräftemangel“ die Klinke in die Hand. In der Summe bringt diese Situation den Arbeitenden mehr Vorteile, als gesamtwirtschaftliche Nachteile entstehen. Demografischer Wandel und gesamtwirtschaftliche Entwicklung begünstigen das wohl auch in den nächsten Jahren. Eine progressive Arbeitsmarktpolitik kann die Situation auch nutzen, um Verbesserungen vor allem für Gruppen zu erreichen, die es auf dem Arbeitsmarkt nicht leicht haben und ausgegrenzt werden. Auch eine Transformation der Arbeitsverhältnisse hin zu einer gut bezahlten 30-Stunden-Vollzeit für alle, die sie wollen, scheint möglich, genau so wie ein Strukturwandel hin zu ökologisch nachhaltigem Energieverbrauch und Verkehr, sozialen Diensten in einer Care-Ökonomie und einer Industrie mit den neuesten Technologien. Dieser Beitrag konstatiert ein Potenzial zur weiteren Machtverschiebung hin zu Arbeitnehmer:innen in der Zukunft und macht konkrete Vorschläge in der Arbeitsmarkt- und Arbeitspolitik, um gesunde und gut bezahlte Arbeit für alle voranzutreiben.
CHANGES IN HEART TYPE FATTY ACID BINDING PROTEIN (H-FABP) AND CERTAIN BIOCHEMICAL PARAMETERS DURING CHRONIC ARTERY DISEASES
Authors: GÜNEŞ Ercan , MERT Nihat , KAYA Yuksel , GÜNBATAR Nizamettin , MERT Handan
Published: May 2023

In this study, changes in heart-type fatty acid binding protein (H-FABP) and certain biochemical parameters during chronic artery diseases were investigated.

Coronary artery disease (CAD) is one of the leading causes of death and morbidity in our country,which is also true for the world in general as well. CAD generally develops on the foundations of atherosclerosis. In this study, blood samples collected from patients who applied to Van Yüzüncü Yıl University Dursun Odabaş Medical Center Emergency Department and Cardiology Polyclinics with acute ischemic chest pain between January 2019 and June 2019 were evaluated. Patients were not given any drugs or other kinds of substances before sample collection. Of the patients who applied to the cardiology clinic, 24 patients with acute ischemic chest pain were diagnosed with chronic arteritis, 12 patients with cardiological problems were diagnosed with diabetes mellitus (DM), 12 patients with hypertension (HT) problems and heart complaints, and 12 healthy individuals (who were not diagnosed with diabetes, hypertension or CAD) were included as research materials.

Certain markers like Troponin, CK, CK-MB, AST, ALT, LDL-Cholesterol, HDL-Cholesterol, LDH, Glucose, and Creatinine in the blood samples were biochemically determined using an autoanalyzer (Abbott ci16200),while H-FABP values were determined using ELISA method.

LDL-cholesterol levels were highest in the CAD group, HDL-Cholesterol and LDH levels were high in the CAD+HT group, while CK, CK-MB, cTnI, AST, Glucose, creatinine, and H-FABP levels were found to be high in the DM+CADgroup. Meanwhile, cTnI values were increased in people with HT or DM in addition to CAD, but there was no statistical significance. LDL-cholesterol changes also did not vary significantly between the groups. Intergroup changes in other parameters examined showed the importance of CK and Glucose levels at p≤ 0.001, AST p≤ 0.002, LDH p≤ 0.003, CK-MB p≤ 0.004, HDL-Cholesterol p≤ 0.049, Creatinine p≤ 0.011, and H-FABP p≤ 0.050. In recent years, H-FABP has taken its place in the field of cardiology with increasing importance in the diagnosis of CAD and MI. The findings obtained in this study show that the H-FABP level was increased in all patients examined (except the test group), and we recommend its use as a critical and useful parameter in the field of cardiology.
Evaluation of Radiation Protection Practices and Patient Dose Reduction Strategies in Panoramic Imaging in Makassar, Indonesia
Authors: Rusli Muhammad
Published: May 2023

Introduction: Panoramic radiography is an essential tool in dentistry, offering a wide field of view for diagnosis and treatment planning. However, it is associated with radiation exposure, necessitating the implementation of optimal radiation protection practices. This study aimed to evaluate radiation protection practices and patient dose reduction strategies employed in panoramic imaging facilities in Makassar, Indonesia.
Methods: A cross-sectional study was conducted involving panoramic imaging facilities in Makassar. Data were collected through a combination of questionnaires, direct observations, and dosimetric measurements using thermoluminescent dosimeters (TLDs). The questionnaires assessed radiation protection practices, equipment specifications, and patient dose optimization strategies. Direct observations evaluated adherence to radiation protection protocols, while TLDs measured patient doses.
Results: The study revealed variability in radiation protection practices and patient dose levels across different facilities. Some facilities demonstrated suboptimal adherence to radiation protection guidelines, including inadequate shielding and lack of proper collimation. Patient doses varied significantly, with some exceeding recommended levels. The study identified several factors associated with higher patient doses, including outdated equipment, lack of regular quality assurance programs, and limited awareness of dose optimization strategies.
Conclusion: The findings highlight the need for improved radiation protection practices and patient dose optimization in panoramic imaging in Makassar. Implementing comprehensive quality assurance programs, regular equipment maintenance, and continuing education for dental professionals can contribute to minimizing radiation risks associated with panoramic radiography.
Measurement of the air quality in the agglomeration of Bor in 2022 during the copper smelter reconstruction in Bor
Authors: Tasić Viša , Apostolovski-Trujić Tatjana , Radović Bojan , Kovačević Renata , Ristić Nevena , Urošević Tamara , Kamenović Vladan
Published: May 2023

This paper presents the results of the air quality measurements in the agglomeration of Bor in the period June-December 2022, in which the Copper Smelter in Bor was not working due to the works on reconstruction and increasing the capacity for copper concentrate processing. Based on an analysis of the existing measuring points and concentrations of pollutants, measured in the local and national air quality monitoring network in the territory of the Bor agglomeration, as well as the possible impact of the new mining and metallurgical facilities in the company Serbia ZiJin Copper Bor, the additional locations, where the measurements were performed, were selected. The air quality measurement results show that there was no exceedance of the hourly and daily limit values for gaseous pollutants, nor were there an exceedance of the limit value for the mean daily concentration of lead in the suspended particles of the PM10 fraction, as well as the target values for the concentrations of cadmium and nickel in PM10. The arsenic concentration in PM10 at the measuring point of PU Bor was above the target annual value for 3 days. The maximum measured mean daily value of arsenic concentration in PM10 at this measuring point was 11.3 ng/m3 . Based on a complete insight into the results of air quality measurements in the Bor agglomeration in 2022, it can be concluded that the dominant share of concentration of SO2 , CO, as well as the concentration of arsenic, cadmium, and lead in PM10, originates from the gaseous pollutant emissions from the Copper Smelter Bor in the period when it operates. It was established that at the measuring point MMI Bor, the nitrogen oxide emissions from traffic mostly affect the level of nitrogen oxides in the air. Also, the measurement results indicate that the operation of the Smelter in 2022 did not significantly contribute to the concentration increase of suspended PM10 particles in the agglomeration of Bor, and that during the period of operation of the Copper Smelter in 2022, no copper concentrates with increased nickel content were processed.
Analysis of the asynchronous electrical drives for the industrial machines with a cyclic (intermittent) electrical shock load
Authors: Marković Nenad , Bjelić Slobodan , Marković Filip
Published: May 2023

The analysis and proposed optimization technique of asynchronous electric drives of production machines with a cyclic impact load, under the condition of minimum energy consumption, was presented in this paper. The mean values of the electric motor torque in the working range of a slider, were adopted in calculation. The derived formulae can be used to calculate the optimal parameters of the electric motor drive.
Considerations of spatial and ecological aspects of the security of nuclear facilities in Serbia
Authors: Stefanović Nebojša , Danilović-Hristić Nataša , Milijić Saša
Published: May 2023

The aspect of environmental protection and environmental security is significantly represented within spatial planning and is increasingly gaining importance. Environmental safety is part of overall safety and poses an absence of threats of harm and endangerment to the environment and population. Spatial and urban planning should be seen as an integrated and comprehensive process, in which all mutual conditions are considered and conflict situations in the space are addressed. The paper analyzed an example of the existing location of a radioactive waste storage facility at the Vinča complex, located only 12 km from the centre of Belgrade, posing a major security risk. International criteria and conditions for nuclear sites have been systematized and an overview of spatial conditions from the aspect of geological and hydrological conditions, protection of space, population sprawl, settlements and facilities, etc. The initial hypothesis has been proven that the Vinča site and its environment are not suitable for disposal of radioactive waste and that it is necessary to comply with general conditions related to spatial development of nuclear sites and radiation protection. The work provides recommendations for further spatial development and protection on the site Vinča and its immediate surroundings.
Risk management in clinical and biochemical laboratories during the COVID-19 pandemic
Authors: Stanković Sanja , Šantrić-Milićević Milena , Ašanin Milika , Bulat Petar
Published: May 2023

The COVID-19 pandemic is a major challenge for clinical-biochemical laboratories. Laboratory managers face demands to maintain the productivity and quality of laboratory diagnostics, while protecting laboratory staff from a new pathogen that the medical public has only just begun to reveal. This paper describes the experiences of the Center for Medical Biochemistry of the University Medical Center of Serbia (CMB UCCS) in risk management during the COVID-19 pandemic. During the pandemic, this reference center, the first accredited laboratory in Serbia, provided more than 4.5 million tests in the field of modern laboratory diagnostics for COVID-19 patients. The paper will describe a site- and activity-specific risk assessment of the laboratory to identify and mitigate risks, measures to protect against potential risks from infectious samples, with a focus on staff safety and prevention of biohazard exposure. CMB UCCS risk management strategy based on IFCC, WHO, CLSI M29A4 risk management recommendations will be analyzed. From today's viewpoint, the main precondition for successful risk management during a pandemic is the timely provision of laboratory facilities, i.e. that laboratories should have enough staff to be flexible in their work, that the staff have adequate protective equipment and resources for work, and that managers are experienced and ready to work effectively in crisis situations, taking into account the implementation of motivation strategies and promoting the mental and physical health of employees.
Financing of voluntary fire societies in the Republic of Serbia
Authors: Milenković Miloš , Kekić Dalibor
Published: May 2023

Voluntary fire societies in the Republic of Serbia are currently a significant operational component and additional assistance to professional fire and rescue units and local emergency headquarters when needed. During the last three decades, this area has been largely neglected and threatened to lead to complete devastation and disappearance of voluntary fire societies in the Republic of Serbia. However, since the adoption of the Law on voluntary firefighting, which was adopted at the end of 2018, the Ministry of the Interior and the Sector for emergency management have started and implemented a series of activities aimed at the systemic development of voluntary firefighting. During this process, significant attention is paid to the financing of voluntary fire societies, which is currently not systematically resolved and this will be the basic hypothesis of the work with the aim that the authors propose the establishment of stable sources of funding that enable smooth operation and functioning of voluntary fire societies. The research in this paper will be focused on the analysis of voluntary firefighting in the countries around the Republic of Serbia and the ways in which they regulated the financing of voluntary fire societies. One of the expected results of the work is the proposal of a financial model aimed at both the national level and the level of local self-governments, which would contribute to further improving the work of voluntary fire societies.
Organization of emergency headquarters in the Republic of Serbia
Authors: Jovanović Igor
Published: May 2023

Natural disasters and technical-technological accidents are becoming more common in every society. As a result of climate change and greater exploitation of the environment, there is a risk in every country, regardless of the level of development. Natural disasters cannot be prevented in many ways, some can not even be predicted (earthquake), but the consequences can be mitigated by adequate preventive measures, as well as timely response of the competent services. By adopting the first systemic law regulating the field of emergency situations and establishing an integrated protection and rescue system, the Republic of Serbia has defined the basic goals - protection of human lives, material and cultural goods, environment, and no less important social stability. Emergency headquarters have been appointed as the governing bodies in charge of implementing this goal in the conditions of an emergency situation, or immediately before its occurrence. The hypothetical framework of the work is reflected in the organizational level, preparations as the content of the organization, the parameters of the structure and the organizational performances of the emergency headquarters. The aim of this work is to identify, systematize and explain the basic features of the organization and functioning of emergency headquarters in the Republic of Serbia and consider opportunities for their improvement.
Natural resources as indicators of environmental safety: Situation and perspectives of the Republic of Serbia
Authors: Tomić Miloš
Published: May 2023

The ubiquitous trend of intensive exploitation of natural resources at the national and global level can cause a series of environmental, political and social disturbances. The need for a healthy environment, on the one hand, and the improvement of people's living standards in the 21st century, on the other, are often incompatible despite the constant formal emphasis on the term or dissonant interpretation of the importance of the concept of sustainable development. In the theoretical sense, changes (disturbances) in the environment are the result of complex natural and social cause-and-effect actions, which, viewed in a wider context, unites ecological security. It can also be said that the conditional degradation of space is an inevitable consequence of the initiation of development, provided that the impacts are reduced to a minimum level by rehabilitation and recultivation of the space and the living environment (which primarily refers to the construction of infrastructure and the arrangement of space for various purposes). This is solved during the preparation of planning documents, environmental impact analyzes and measures and policies for the implementation of planning solutions. Accordingly, for the purpose of researching changes in space and improving the solution to the scientific problem of the lack of adequate methodology for achieving ecological security on the territory of the Republic of Serbia, the most important natural resources were identified as basic indicators in this work: water, soil, air and biodiversity. In accordance with the projected goal (systematic description of the state of ecological security in the territory of the Republic of Serbia with a special reference to the state of natural resources), one of the main techniques will be the analysis of the content of documents created or generated within individual national institutions, as well as international and non-governmental organizations. According to the available data, it can be concluded that the current state of ecological security in the Republic of Serbia is violated or is potentially threatened, bearing in mind the fact that the main cause of the disturbance is the excessive or uncontrolled exploitation of natural resources, the trend of realizing short-term financial benefits, the absence of implementation of planned solutions, the creation of conflicts for the purpose of space and the application of measures against endangering the living environment.
The role and significance of resilience for crisis management: Towards reconceptualization
Authors: Stanković Nevena
Published: May 2023

The transformation and multiplication of modern security risks have made urgent the need to change the traditional security paradigm. In addition, the accumulation of destructive potential of modern crises, their spillover into all spheres of public and private life, as well as their tendency towards the global scope, make the expediency and practical applicability of currently dominant postulates of crisis management particularly debatable. The paper starts from the hypothesis that it is necessary to improve the existing theoretical framework of crisis management, and that in the direction of achieving this goal, the focus of theorists and researchers should be on resilience. The aim of this paper is to point out the role and importance of resilience for crisis management by offering numerous possibilities of practical implications, and to encourage more intensive and in - depth elaboration of derived theoretical and empirical conclusions. In the direction of reconceptualization, the following research questions will be sought: In what way are the concepts of crisis management and resilience complementary? How can incorporating the premise of resilience into crisis management achieve a greater degree of readiness and preparedness, a more valid response to modern crises, and a faster and more effective recovery from them? Finally, what strategies are available to crisis managers and what methodological tools are suggested for measuring the degree of resilience achieved and evaluating the progress made at all stages of crisis management? By the multi-method approach, with the dominant application of content analysis and comparative analysis of relevant scientific and professional literature, the author will seek to achieve the previously presented goal of the paper.
Redefining the civil protection in the European Union
Authors: Gačić Jasmina
Published: May 2023

As part of the national security system, the civil protection represents a unique management system of organizational, technical, economic and social activities aimed at protecting and saving people, material and cultural assets and the environment, from natural, technical-technological, war and other threats. For a long time, civil protection was understood as part of the policy of "internal security" and was strongly associated with the idea of the inviolability of national sovereignty. Different concepts have been developed at the national level depending on the political system of the country, its capacities, threat perception and historical experience, with the aim of creating an optimal population protection system. The consequences of major natural and anthropogenic disasters have contributed to a change in the understanding of civil protection as a system of exclusive national interest, and cross-border risks and threats have improved international cooperation and coordination on that front. The aim of this paper is to collect relevant scientific theses and research results to encourage further discussion on the future of civil protection. The results of the work should indicate the fact that civil protection is still an important area of national sovereignty. Also, it should point to the necessity of its redefinition and that the European Union civil protection mission speaks for the entire EU project and is one of the most tangible instruments of European solidarity and the process of disaster risk reduction.
Comparative analysis of methodologies for loss assessment after elementary disasters of countries in the region and the international community
Authors: Nedeljković Sandra , Žugić Željko , Marinković Marko
Published: May 2023

In the Republic of Serbia, the assessment of losses and damages after a natural disaster is based on a document adopted in 1987 during the Socialist Federal Republic of Yugoslavia. Although of exceptional quality in its structure and purpose, the Instruction on a Uniform Methodology for Assessing Damage from Natural Disasters has outlived its time and it is necessary to align the document with today's needs. The Government of the Republic of Serbia has formed a working group with the task of drafting a unique methodology for assessing damage from natural and other disasters, which is also in line with international standards and practice. In parallel with this activity, engineering associations and groups of experts are working on technical instructions for each of the natural hazards, which will be compatible with the unique methodology to be adopted by the Government of Serbia. The earthquake that hit the Republic of Croatia in 2020 pointed out a number of shortcomings in national documents, and then the international methodology "Post Disaster Need Assessment" was used to assess the damage. The paper presents the experiences of a team of experts from Serbia who paid an official visit to the Republic of Croatia after the earthquakes in Petrinja and Zagreb and gained significant experience from the field in damage assessment, as well as through cooperation with crisis headquarters formed after the earthquake.
Forms of irregular circumstances in the European constitutional area
Authors: Mikić Vladimir
Published: May 2023

By reviewing and analyzing the solutions contained in the reference constitutions of European countries, the author tries to systematize forms of irregular circumstances that are regulated at the constitutional level. A grouping was observed in models according to which there are general provisions on irregular circumstances, as well as those that contain provisions that are individually dedicated to the state of emergency, war and natural disaster. The rule that refers to the general frequency of mutual borrowing of solutions in the constitutions of European countries does not deviate significantly even in the area of regulation of irregular situations. The structure and normative systematics of constitutional acts often indicate whether the author of the constitution pays equal attention to different forms of irregular circumstances, as well as whether he treats them together or separately. Constitutions establish the basis for declaring individual forms of irregular circumstances, as well as entities authorized to make decisions on their introduction and abolition. Restrictions on human rights and basic freedoms are an important topic in constitutional regulation that has points of contact with the irregular situation, and the authors of the paper have given special attention to them.
Reduced order model for an electro-hydraulic valve of a gas turbine engine's controller
Authors: Elmayyah Wael , Samy Mostafa
Published: May 2023

Gas turbine engines (GTE) are widely used in military and industrial applications. Accurate modeling is mandatory to advance GTE control. The present article investigates, experimentally and theoretically, a detailed dynamic model of an electro-hydraulic system that controls a variable geometry inlet guide vanes (VIGV) of turboshaft GTE. A parametric study for the computationally expensive and time-consuming model has been conducted considering the forces affecting the valve's spool and its relatively short settling time. A reduced mathematical model has been developed. The prediction results of the reduced and full-detailed models have been compared with the experimental results. The reduced model has decreased calculation time by 45% to 50 % while keeping the RMSE of the model within 1-2 % away from the actual system's experimental results for the complete operating range. An improvement allows future studies to integrate the whole subsystems of the GTE in a single computationally affordable model.