bluuebunny/crossref_metadata_2025 huggingface dataset:
Availability of financial statements of companies listed on the Belgrade stock exchange
Authors: Mitrović Aleksandra , Knežević Snežana , Milašinović Marko , Miletović Nevena
Published: August 2024

Financial statements have great informative value for many users. The easy finding of financial statements and therefore their availability can influence the making of various decisions of users. The purpose of this paper is to examine the availability of financial statements of listed companies on the Belgrade Stock Exchange. Therefore, the trend of availability from 2019-2021 may show certain patterns of further examination of the reasons for non-submission or even inaccurate financial statements that are identified as such on the website of the Serbian Business Registers Agency, which was used for the search of financial statements. It is considered important to examine the availability of financial statements in more detail, especially in the years of the emergence and duration of the COVID-19 virus pandemic, which brought many novelties in the company's operations, primarily in the field of financial reporting. The results of the research show an increasing trend in the number of available public accurate financial statements, a decrease in the number of public inaccurate financial statements, and an increase in the number of companies whose financial statements are not available.
Withdrawal of goods from the market – determinants of defective products
Authors: Mandić Slavica , Odalović Tomo , Stanković Aleksandar
Published: August 2024

This paper represents a form for preventive consumer protection, primarily from the aspects of health and safety, especially when it comes to mass industrial production. In practice and in legislation, a distinction is made between visible and invisible defects. Numerous manifestations that are identified as product defects can be classified into three categories, i.e., they are manifested in the form of: (1) structural and manufacturing defects, (2) inadequate instructions for use and inadequate warnings about the properties of the product, and (3) subsequently discovered defects, the harmful effects of which could not be known at the time when they were produced, i.e., placing the product on the market (trade), which acquires the status of goods. Practice has shown that these cases very often involve products from the pharmaceutical industry. For those products, it was subsequently established that they caused some damage to the health of the user, and for which products, according to scientific and putting them on the market, they did not know about their harmful properties. This means that they caused very bad effects on the health of the users. This means that they caused very bad effects on the health of the users. Consumer products that can present not only potential dangers when used, but also lead dangerous situations during use, including health and safety risks (most often cosmetic products, children's toys, health supplements, etc.). In the European Union, therefore, a system of rapid exchange of information on the dangers arising from the use of the mentioned consumer products (RAPEX) was established.
Risk management of future large-scale electrification
Authors: Kezunović Mladen
Published: August 2024

After a brief overview of the motivation for large-scale electrification, the lecture focuses on the associated risk and potential impacts that can propagate across multiple critical infrastructures. The sources of the risk are identified through analysis of the future evolution of the electric grid development where environmental impacts, deterioration of the legacy infrastructure, massive interfacing of distributed energy generation resulting in penetration of inverter-based resources, digitalization, and human behavior consequences are dominant. The focus then shifts to the new approaches for predicting the risk by using advanced machine learning and artificial intelligence approaches, and then mitigating the risk impacts through various optimization objectives. The lecture ends by pointing out the importance of the societal, normative, regulatory, and legislative changes that need to take place for the large-scale electrification not to pose major risk to the welfare of individuals and economic prosperity of a society. The key points are illustrated using the Use Case of state of risk prediction of the electric grid outages, as well as future control and protection decision-making paradigm.
Electric and magnetic fields in the vicinity of transmission network and HVDC plants
Authors: Canova Aldo
Published: August 2024

High voltage direct current (HVDC) consists of two converters working as a rectifier and inverter which are connected, through transformers and high voltage equipment, to two high voltage AC (HVAC) power networks. Such electrical infrastructures are spreading thanks to the advantages they offer and the possibility of overcoming the limits of the most widespread HVAC technology. The first operational HVDC system dates back to 1954, created between the island of Gotland in the Baltic Sea and the mainland (Sweden), with a power of 20 MW which has over time been replaced with a 260 MW bipole transmission system. Other plants, all using mercury vapor valves, followed over the years, including: in 1965, the connection of Sardinia with the continent; in 1970, the Pacific DC Intertie, connecting the Pacific Northwest region and Los Angeles, United States; in 1973, the Nelson River Bipole in Canada. Only since the 1970s, with the development of high voltage semiconductor converters, HVDC transmission systems, which had already proven indispensable for crossing long stretches of sea or for connecting electrical systems with different frequencies, began to show competitiveness also for the transmission of great powers over very long distances. HVDC allows the long-distance transmission of large quantities of energy and installation costs are compensated by lower losses (breakeven point around 600-800 km). They are very useful in case of marine connections: being able to cross long stretches of sea, unlike HVAC which has limitations dictated by the need to compensate for the capacity of AC cables. Moreover, HVDC allows the interconnection between big consumption centers and geographical areas in which we have large availability of renewable sources (see for example the three DC corridors, made up of underground cable of ± 525 kV, which in Germany are being laid for transfer sustainable energy from the north of the country to the south). Finally, by crossing two converters directly facing each other (BackToBack) it allows the connection of alternating current networks that are not synchronous with each other (e.g. the first at 50 Hz and the second at 60 Hz). Among the main advantages, environmental impact aspects must also be considered, including those relating to electric and magnetic fields. After an introduction related to HVDC technology, the seminar will highlight the innovative aspects that need to be considered in simulations and measurements in electric and magnetic fields, considering that there are new aspects such as high static currents and voltages which are not present in traditional HVAC infrastructures. In particular, a couple of topics of interest are represented by the measurement of the static electric field due to the high voltage connection between the valve room and the power cables and the measurement of the disturbances generated by the harmonics along the DC lines.
Empowering the grid: Innovations in switching equipment for energy transition
Authors: Uzelac Nenad
Published: August 2024

As the energy sector undergoes a significant transition towards more sustainable and efficient practices, the role of advanced switching equipment has become increasingly critical. This presentation will explore the essential advancements in switching technology that are driving this transition. Key topics include the development and implementation of high voltage DC breakers and SF6-free breakers, and the integration of sensors within switching equipment for enhanced protection schemes and condition monitoring. A case study on the innovative development of a High Voltage recloser will be presented, demonstrating how distribution protection elements are being effectively applied to sub-transmission systems. Join us to discover how these technological advancements are empowering the grid and shaping the future of energy.
Holistic approach to modelling and analysis of sustainable power systems
Authors: Milanović Jovica
Published: August 2024

Due to the evident climate change and environmental pressures the future power/energy systems will have to operate, sooner rather than later, in a net-zero environment. This will manifest in a mix of wide range of electricity generation, storage and demand technologies (increasingly power electronics interfaced); blurred boundaries between transmission and distribution system; significantly higher reliance on the use of legacy and measurement data including global signals for system identification, characterization and control and Information and Communication Technology embedded within the power system network and its components. The key characteristics of such a complex system, would certainly be proliferation of power electronic devices in different shapes and forms and for different purposes, increased uncertainties in system operation and parameters and much larger reliance on the use of measurement and other data collected. This presentation will first briefly introduce some of the key characteristics of future net-zero, sustainable power systems and the need for holistic approach to solving the identified challenges and then present the holistic approach to solving them with examples of the recent advances in this area focusing on applications of nondeterministic approaches, use of data analytics, machine learning and risk assessment-based approaches.
Resonances and interactions in electrical networks: Growing challenges
Authors: Drobnjak Goran
Published: August 2024

In the recent years, electrical networks around the world have more and more energy sources as well as transmission regulation equipment controlled by devices operating on the principle of power electronics. Also, renewable sources are typically in remote regions where a large number of generating units (wind generators or PV generators) are connected by medium-voltage cables that channel the produced energy towards the high-voltage network that is under the control of the system operator. Cable networks combined with inductive network elements always have their own resonant frequencies that change dynamically with changes in the network topology. In some operating conditions, it is possible that undesired interactions might occur between the network and the devices that connect and regulate the currents and voltages at the connections of renewable sources. These interactions are not always easy to understand, especially in cases where there are multiple active control devices connected in mutual electrical proximity. Similar interactions can also occur under different conditions and between different devices in industrial networks.
Analysis of the connection of the solar power plant to the system using quasi-dynamic calculation
Authors: Stamatović Sara
Published: August 2024

Poslednjih nekoliko decenija, obnovljivi izvori energije postali su ključni faktor u borbi protiv klimatskih promena i jedan od glavnih uzroka globalne energetske tranzicije. Nastala je hitna potreba za dobijanjem "čiste" energije, pre svega iz izvora koji koriste energiju vetra ili Sunca. U cilju sinhronizacije ponašanja proizvodnih jedinica u interkonekciji, Evropska komisija je donela uslove za priključenje proizvođača električne energije na mrežu (A network code on requirements for grid connection of generators - RfG), gde je definisana kategorizacija proizvodnih jedinica po tipovima, i naznačeni su uslovi koje svaki tip jedinice mora da ispuni. Analizirano je priključenje velike solarne elektrane na prenosni sistem i njen uticaj na prilike u mreži. Za proračun tokova snaga u sistemu korišćen je kvazi-dinamički proračun, tako da je, umesto tri karakteristična režima (letnji i zimski maksimum i letnji minimum), sagledano 8760 stanja, za svaki sat u godini. Ovakav proračun, iako mnogo složeniji, daje sveobuhvatniji set informacija o prilikama u sistemu. Formira se simulacioni model, gde su modelovane satne vrednosti aktivne i reaktivne snage u svim potrošačkim čvorovima u mreži, kao i aktivna i reaktivna snaga u generatorskim čvorovima, ako je moguće. Generisanje solarne elektrane koja se priključuje predstavljeno je linearnim modelom, skaliranjem podataka o horizontalnoj insolaciji na lokaciji elektrane. Empirijski, relativna greška između ukupne proizvedene energije u toku jedne godine i pretpostavljene proizvodnje iznosi oko 5%. U posmatranom primeru, elektrana koja se priključuje (instalisane snage 150 MW) ne ugrožava elemente u sistemu. Najveće promene sa stanovišta naponskih prilika i opterećenja elemenata se, kao što je i očekivano, dešavaju na mestu priključenja elektrane i na električno bliskim vodovima i transformatorima. Prilikom proračuna posmatrana su tri režima rada elektrane, kada je faktor snage jednak jedinici, i kada je jednak 0,95 kapacitivno i induktivno. Maksimalno opterećenje priključnog voda za induktivni režim i režim cosph=1 iznosi 84%, dok je najveće u kapacitivnom režimu i iznosi 94%. Pritom treba napomenuti da se opterećenje voda veće od 90% u kapacitivnom režimu javlja u svega 24 časa u toku godine. Zaključeno je da je, usled većeg nivoa detaljnosti, a i iz operativnih razloga kako za investitora, tako i za operatora sistema, pogodnije korišćenje simulacionog modela na satnom nivou (odnosno kvazidinamičkog simulacionog modela). Na osnovu rezultata sa satnom rezolucijom može se doći do bolje procene ne samo kritičnih režima sa stanovišta ugrožavanja naponskih granica ili preoptrećenja u mreži, već i učestanosti njegovog ponavljanja.
INTROL-22 Synchronous generator automatic voltage regulator
Authors: Stojić Đorđe
Published: August 2024

The lecture presents the solutions applied in the current version INTROL-22 of the automatic voltage regulator (AVR) of the synchronous generator of the Nikola Tesla Institute of Electrical Engineering. In addition to the standard solutions defined by the current state of the art, the improved solution also contains algorithms that enable the application of AVR in the conditions of power facilities in power systems with remote nodes, as well as with a transmission system sensitive to transient instabilities and disturbances such as short circuits and frequent outages of parts of the system. The developed AVR also includes improved software for identifying the dynamic characteristics of the regulation system, for setting the parameters of voltage regulators, limiters and stabilizers of the power system, as well as for monitoring the variable states of the AVR in real time via a high-speed RS485 serial connection, and with specialized industrial communication protocols based on Ethernet.
High-voltage cables: Energy transfer carriers of the future cities
Authors: Simić Ninoslav
Published: August 2024

The topic of the presentation are high-voltage underground power cables, that we use for the transmission and distribution of energy in urban areas. Today, power cables have become that invisible part of the network, which enables us to live in cities, regardless of whether we energize large commercial buildings, shopping centers, housing complexes or charging stations for electric vehicles. In this presentation, first of all, an overview of the current situation in the 110 kV transmission cable network in Serbia is given, with a special focus on Belgrade as the largest consumer. Examples show the types of used cables, which have been installed over time, as well as typical sections and expected powers that these cables can transmit. Given that the high reliability of the cable network is expected, the audience will be presented with a brief overview of the testing methods and the necessary technical conditions for performing the tests, which enable the assessment of the condition of the cable lines. The tendency to reduce losses in the transmission network and the limitation of existing raw materials for making cables, determined the development of new technologies and the application of superconductors as the future in this area. At the end of this presentation, new solutions in cable construction and their current application are briefly presented.
Innovations and technology transfer
Authors: Lukić Jelena
Published: August 2024

The main objective of project Serbia Accelerating Innovation and Entrepreneurship Project-SAIGE funded by World Bank and EU is growth of innovations and technology transfer to enable sustainable development of Scientific Research Institutes of Republic of Serbia, including NTI. Intellectual property rights and types of IP (patent, trademark, industrial design, copyright, trade secret) are presented in this paper, content of NTI rulebook on IP and ways of financing innovations upgrade of technology readiness level. Achievements of newly established Technology Transfer Office and number of NTI innovations, patents, proof of concepts, in NTI from 2022 is presented, as well as success story, upgrade of technology readiness level of one innovation to reach TRL 9, verification in operational environment, based on developed commercialization strategy ad business plan.
Causes of turnover of professional soldiers of the Serbian Armed Forces
Authors: Nikolić Dejan
Published: August 2024

Since 1st January 2011, compulsory military service was abolished and transition was made to manning the units of the Serbian Armed Forces with professional members. This implies that the Serbian Armed Forces should attract, employ and retain professional soldiers within their units. Such scenario has created new challenges in human resource management within the Serbian Armed Forces. Having in mind that professional soldiers make a significant component that influences the state and operational capabilities of Serbian Armed Forces units, turnover represents a serious obstacle both in achieving and maintaining required level of their operational capability. Every organisation faces turnover. It is necessary for the management of the defence system to identify expectations and requirements of professional soldiers, which would contribute to the development of a strategic plan for the reduction of their turnover. The goal of this paper is to identify the causes of the turnover of professional soldiers of the Serbian Armed Forces. Empirical research was carried out on a sample of 117 company/autonomous platoon commanders and 1213 professional soldiers of the Serbian Armed Forces. The causes of turnover were examined through a survey. Company/ autonomous platoon commanders were asked to evaluate factors that encourage professional soldiers the most to leave the Serbian Armed Forces. Professional soldiers were asked to define actions that the defence system should take to reduce their outflow. Obtained results show that the turnover of professional soldiers is considerably influenced by job satisfaction and organisational support.
Analysis Of Cutting Parameters Affecting The Surface Roughness Value Of Amutite Steel With A 50 Mm Diameter Facemill On The Fu100 Lagoon Milling Machine Using Statistical Methods
Authors: Soetopo Antonius Adi , Muslin Dede Buchori , Andini Inge Aliane
Published: August 2024

The Lagun FU100 Milling Machine (LFR 26) is a type of milling machine located at the Bandung Manufacturing Polytechnic. There is a surprising opinion that the Lagun Milling machine is rarely used, both for student academic activities and production purposes. Generally milling machines can achieve a surface roughness of 0.32-25 µm. Appendix 3 shows the results of the surface roughness of the grinding results. So this research was carried out to prove that this machine can reach surface roughness standards, and also to state that this machine is still suitable for use for production activities or student academic activities and to prove that this machine can still produce products of good quality. In this study, the three parameters evaluated were cutting speed, feed rate, and depth of cut. Through experiments and statistical analysis, it was found that RPM at a medium level produced the lowest roughness value of 0.340, while cutting depth at a high level produced the smoothest surface roughness with a value of 0.330. Feed rate at the medium level also shows the lowest surface roughness results with an average of 0.330. The research results show that the smoothest surface that can be produced is 0.2883, this value is at level N4. In addition, the Lagun FU100 milling machine was declared suitable for use in achieving the desired roughness value, demonstrating the ability of this machine to produce surfaces with the expected quality standards.
A Book of Basic Concepts of Operations, Supply Chain and Inventory Management (Under Stream of Production Management)
Authors:   Director – MBA Rastriya Shikshan Mandal's Chetan Dattaji Gaikwad Institute of Management Studies, Pune, Affiliated to Savitribai Phule Pune University Pune, Maharashtra, India., Kulkarni Prof. (Dr.) Milind Audumbar , Mangrulkar Prof. Ravindra P. ,   Assistant Professor Department of Business Analytics  Pune Institute Business Management  Affiliated to Savitribai Phule Pune University Pune, Maharashtra, India., (Mangrulkar) Prof. Savita R. Sonawane ,   Assistant Professor  Department of Mechanical Engineering Sinhgad College of Engineering, Pune Affiliated to Savitribai Phule Pune University,  Pune, Maharashtra, India., Anute Dr. Nilesh ,   Associate Professor ASM’s Institute of Business Management and Research Pune, Maharashtra, India.
Published: August 2024

Ever since the semester Pattern is introduced in the Educational system for postgraduate courses, it is the need of the day to prepare the text books which should be handy and readable by the students within a limited span of time. These books, with their reprints, on Basic Concepts of Operations, Supply Chain and Inventory Management written by most of the American and Indian authors, through praiseworthy, could not cater to the real needs of the MBA, PGDBM, and PGDMLM students, appearing for the semester examinations these books are fat, bulky in nature, and difficult to understand. The author of this book felt that in many books the updated information is conspicuously
Cooperation à la Carte?
Authors: Hörzer Anna Lena
Published: August 2024

In a recent contribution to this platform, Kai Ambos, Stefanie Bock, and a number of other distinguished German scholars have presented a compelling and highly topical plea for a consistent and effective application of the Rome Statute "without fear or favour" by Germany, one of its 124 States Parties. A similar risk of selectivity concerning the question of cooperation with the ICC can be observed in the present public and political discourse in Austria. I argue that an 'à la carte' approach to cooperation with the Court in matters of arrest and surrender, as partially indicated in the current debate, is untenable when adopting the ICC's recent jurisprudence on the horizontal inapplicability of head of State immunity, irrespective of the prevailing political circumstances.
Does language familiarity affect typing speed?
Authors: Shin Sophia , Doucette Christopher
Published: August 2024

Typed responses have been used as a way to assess an individual’s thinking skills and creativity in the field of cognitive psychology. However, there is very little prior research on what could affect an individual’s typing speed. We filled this void by examining the relation between language familiarity and typing speed. We hypothesized that individuals who possess a higher degree of familiarity with a particular language would demonstrate faster typing speeds when typing in that language compared to a less familiar language. We collected data from participants at a local high school who underwent typing tests in both English and Latin, with their typing speeds recorded and analyzed. We found that participants exhibited slower typing speeds when typing in Latin compared to English, and that participants with no Latin experience exhibited a greater disparity between English and Latin typing speeds than those with Latin experience, underscoring the influence of word familiarity on typing performance. However, further analysis indicated that the level of Latin education among participants does not significantly affect their typing speed in Latin. These findings offer valuable insights into the cognitive aspects of typing and the impact of language familiarity on typing proficiency.
Natureza da ciência em sala de aula: aspectos empíricos para uma investigação em eletromagnetismo
Authors: Fontes Daniel Trugillo Martins
Published: August 2024

Neste artigo, apresentamos e discutimos uma atividade didática que combina aspectos epistêmicos da natureza da ciência (NdC) com um experimento de montagem simples e de custo relativamente baixo sobre indução eletromagnética. O objetivo da atividade é que os alunos alcancem uma compreensão mais crítica da relação entre teoria e experimento. Os resultados da aplicação demonstraram que os alunos não apenas aprimoraram suas habilidades de comunicação dentro dos grupos, mas também exercitaram a criatividade ao enfrentar um problema real e desconhecido. Além disso, as interações com os estudantes revelaram que eles discutiram criticamente aspectos epistêmicos da NdC, a saber: a inexistência de um método científico universal, a utilização da imaginação e da crença na prática científica e a possibilidade de a teoria não ser consequência da observação experimental e vice-versa. Em relação aos aspectos pedagógicos, os alunos aprimoraram suas capacidades comunicativas dentro dos grupos, exercitaram a criatividade na resolução de problemas e assumiram a responsabilidade no desenvolvimento da atividade. Embora a atividade tenha sido realizada com alunos do Ensino Médio, em uma escola pública, ela também apresenta potencial para ser aplicada no ensino superior. Por fim, são discutidas diversas possibilidades de expansão e modificação da atividade, visando enriquecer ainda mais a experiência de aprendizado.
Meningoencefalite tuberculosa: da prevenção às complicações
Authors: Dupont Erick , Flávia Pincerno Pouza Ana
Published: August 2024

Introdução: A tuberculose é uma doença que permeia a vida humana há milênios. Causada por uma micobactéria, sua porta de entrada no corpo humano usualmente se dá via sistema respiratório, especialmente pelos pulmões. Uma vez estabelecida no hospedeiro, é capaz de gerar uma gama de diferentes apresentações, indo de infecções latentes e indolentes até manifestações sistêmicas e agressivas. Apesar de sua relevância na saúde global, mesmo com as novas tecnologias do mundo moderno, seu tratamento ainda permanece um desafio. Na presente revisão estudar-se-á a doença causada pelo Mycobacterium tuberculosis, abrangendo desde seus aspectos mais básicos até o relato de caso de uma das suas manifestações mais mortais: a meningite tuberculosa. Objetivo: Revisar a ampla gama de fenótipos clínicos que esta doença apresenta, bem como trazer atualizações sobre as últimas novidades em seu diagnóstico, tratamento e prognóstico.
A Practical Study on the Integration of “Five Dimensions in One Education” in Local Universities from the Perspective of “ Integration of Five Educations”
Authors: Deng Hongkai , Wu Dongchui , Tang Cuifei
Published: August 2024

本研究以贺州学院“五育融合”实践为例，探讨高校特色育人体系的育人保障机制、育人平台建设、育人模式实践，探讨“五育融合”背景下视域下地方高校“五维一体”融合育人实践模式。贺州学院坚持“五育融合”，打造“五维一体”育人保障机制：成立育人管理机构、完善制度保障体系、优化课程体系建设、强化师资保障水平和激发学生的积极性。通过“五维一体”融合的实践模式，贺州学院取得可喜成果，培养在校大学生德、智、体、美、劳等方面的发展，得到地方社会各界的认可。通过深化“五育融合”，推动“五维一体”育人模式实践落地见效，取得以下实践成果：立德树人成效突出、各类竞赛荣誉丰富、育人实践成果显著、校地合作同频共振和育人成果广泛宣传。
A Study on the Influence of Macanese on Macau Design in the 1980s
Authors: Song Lei , Cao Luhao
Published: August 2024

纵观澳门设计历史，葡萄牙文化对其发展有着很大影响。本文从上个世纪80 年代澳门现代设计发展的时代谈起，这一历史时期是澳门飞速发展的时期，也是澳门设计发展的重要阶段。本文通过对澳门土生葡人族群的来源、定义、文化和艺术进行研究探讨，探析澳门艺术发展历史中澳门土生葡人族群文化在其中的作用。文章回顾了澳门现代设计的80 年代的发展，举例并分析那个时代典型艺术家和设计师的贡献，比如江连浩先生、马若龙先生等。并从跨文化的视角探讨澳门土生葡人族群文化对澳门设计发展的影响。
Effect of Post-Ablational Antiarrhythmic Drugs on Atrial Fibrillation Recurrence: A Systematic Review and Meta-Analysis
Authors: Wang Yangyang , Zhang Wenjing , Gu Yunfei , Shao Yang , Dong Qiming , Li Songsen , Wang Hao
Published: August 2024

Background: The efficacy of antiarrhythmic drugs in reducing the risk of recurrence of atrial fibrillation (AF) after ablation is still uncertain. Therefore, we conducted a systematic evaluation on post ablation antiarrhythmic drugs (AADs) to reduce the risk of recurrent atrial fibrillation. Methods: The databases of PubMed, Embase, Web of Science (WOS), China Science and Technology Journal (CSTJ) Database, Wanfang Database, China National Knowledge Infrastructure (CNKI), and China Biology Medicine (CBM) were searched from inception to 31 December 2023. Randomized controlled trials (RCTs) investigating the efficacy of AADs in preventing AF recurrence were included. Statistical analysis was performed using Review Manager 5.3 (Copenhagen: The Nordic Cochrane Centre, The Cochrane collaboration, 2014) and Stata18.0 (Stata, College Station, TX, USA). Results: A total of 16 studies, with 3834 patients were included in the final analysis. The use of AADs was found to reduce early risk of recurrence (≤3 months) by 28% (risk ratio (RR) = 0.72, 95% confidence interval (CI): 0.53–0.99, p = 0.04), intermediate risk of recurrence (3–12 months) by 22% (RR = 0.78, 95% CI: 0.67–0.91, p = 0.001), and late risk of recurrence (≥12 months) by 29% (RR = 0.71, 95% CI: 0.47–1.07, p = 0.1). No published bias was detected. In sensitivity analyses, the result is consistent and stable after removal of either study. Conclusions: The use of AADs after ablation can reduce the recurrence of AF, and the effect can last for at least 6 months in the overall population. In subgroup analysis, this protective effect can even last for 12 months in the Asian region. In addition, AADs should be used for at least 3 months after ablation to achieve this protective effect.
The Risks of Digital Transformation on Public Education Outcomes in The Kingdom of Saudi Arabia
Authors: Al Burkani Dalal
Published: August 2024

Digital transformation in education has become imperative to keep abreast of accelerating developments and meet the needs of learners in the digital age. Vision 2030 aims to make education more efficient and effective by taking advantage of the potential of digital technology, but this development is not without the risks that must be made aware of and finding appropriate solutions. The current research aims to know the risks of digital transformation in the education sector and the extent to which it affects the outcomes of education in Saudi Arabia. The concept of digital transformation was highlighted and the most important features of digital transformation in public education in Saudi Arabia and its impact on education outcomes and also touched upon the definition of the concept of digital transformation risks in education, the causes of the risks, the types of digital risks, the means followed, and the solutions proposed to avoid the impact of digital hazards. The descriptive curriculum of this study was used, and statistical work was done through the digital transformation risk identification tool forms, which included teachers and teachers (104) General education sector in Medina region as well as students and students (76) And parents (72). The study was the first area of general data and the second area about digital risks, their types and the most harmful from their perspective. The study resulted in identifying the most influential digital risks at the general levels of education. Appropriate solutions were provided to address digital risks.
Comparisons of Physical Fitness Among Different Methods in Track and Field for Primary School Students
Authors: Liang YuFei , Tongdecharoen Wisute
Published: August 2024

Background and Aim: In 2019, the data indicates that the time primary school students dedicate to outdoor sports falls short of the one-hour-per-day guideline mandated by the state and also reveals discrepancies based on gender and region. This study was to study the effect of different training in methods track and field on Physical Fitness in Primary School students and to the comparisons of different training in methods track and field on Physical Fitness in Primary School students.
Materials and Methods: This study is an experimental study. The subjects of this study were 60 fifth-grade students at Hui Min Primary School in Guangzhou City, China. This experimental study was conducted with 60 subjects (3 groups, 20 students in each group) by using the motor game training method, interval training method, and cycle training method. The duration of this training program was 8 weeks, and tests were conducted pre-test, after the 4th week, and post-test. The data were analyzed using means, standard deviations, one-way ANOVA repeated measurement, and post hoc pairwise with Bonferroni. The significant level was .05
Result: The results showed that the mean and standard deviation of the pre-test, after week 4 and post-test, respectively, were: (1) The mean comparison of physical fitness between game sports, interval training, and circuit training showed that all fitness was not significantly different. (2) The mean pairwise differences within the group, game sport, interval training, and circuit training between pre-test after week 4, pre-test with post-test, and after week 4 with post-test were significant.
Conclusion: All the different training methods in track and field, game sport, interval training, and circuit training can improve physical fitness for primary school students.
Effects of Learning Management as Flipped Classroom in Abilities the Reading and Writing Chinese on Eighth-Grade Students at Ivy League Middle School
Authors: Sun Lijuan , Nuansri Mesa , Juithong Suwana
Published: August 2024

Background and Aims: In 2023, responding to national educational directives, this study demonstrates the impact of flipped classrooms on students' Chinese reading and writing ability. This research aims to: 1) compare the academic achievement scores in Chinese reading ability of students before and after participating in a flipped classroom teaching environment.2) To examine the academic achievement scores in Chinese writing ability of students before and after participating in a flipped classroom teaching environment.
Methodology: There are 10 classes (50 students in each class) in the eighth grade of Ivy League Middle School, this study adopts a cluster sampling method and selects 1 class with 50 students as samples. The research tools were: (1) course lesson plans were used to organize and implement flipped classroom teaching, (2) students' reading ability achievements test paper, and (3) essay test with rubric scores of students' writing ability reliability. Conduct pre-test and post-test on the sample using students' reading ability test paper and essay test with a rubric score of students' writing ability, analyze the mean, standard deviation, and single sample t-test of the data using SPSS.
Result: 1) After using the flipped classroom method, students' scores in reading ability tests significantly improved., and the difference was statistically significant 0.05 (t=20.122，p<0.05). 2) After using the flipped classroom method, students' scores in writing ability tests significantly improved, and the difference was statistically significant at 0.05 (t=19.104，p<0.05).
Conclusion: Through flipped classroom teaching method practice, not only improved students' scores and achievements in Chinese reading and writing among students but also enhanced engagement and learning efficiency.
South Korean Capital Market Reacts to Park Ji Min's Solo Debut
Authors: Ahsta Wahyu Farah Fathin , Sutisman Entar , Kartim Kartim
Published: August 2024

Objective: This study analyzes the South Korean stock market reaction to HYBE stock before and after Park Ji Min's solo debut on March 24, 2023.
Research Design and Methodology: The analytical techniques applied are the paired sample t-test for normally distributed data, the Wilcoxon signed rank test for non-normally distributed data, and the single index model technique for beta risk variables.
Findings and Discussion: The results showed significant differences in abnormal returns, stock prices, and beta risk of HYBE shares before and after Park Ji Min's solo debut.
Implications: This research makes a unique contribution to the accounting and financial management field by providing insights into international investment and its relation to signaling theory and event study. It can significantly advance our understanding in these areas and pave the way for further research.
Platelet rich plasma injection in knee osteoarthritis: results after four years.
Authors: Alves Marcelo P. T. , Nunes Catia F. C. , Madeira Sofia A. S.
Published: August 2024

Background

Knee osteoarthritis (KOA) is a progressive degenerative disease and a leading cause of disability worldwide. Intra-articular injection of platelet-rich plasma (PRP) is still a debatable symptomatic treatment and has provided multiple publications in literature with mixed results.

Aim of the work

To evaluate the short and long term effects of intra-articular injection of PRP on pain and functional status of the knee joint as measured by the Lysholm questionnaire and visual analogic pain scale (VAS).

Patients and methods

Twenty-one patients with primary Kellgren-Lawrence grade 3 KOA were assessed using the Lysholm questionnaire and the visual analogue scale for pain (VAS). A single PRP injection was administered, followed by reassessment of VAS at the first, fourth and eighth weeks after the injection. After eight weeks, patients were assessed with VAS and Lysholm questionnaire. In order to evaluate the long term effect of this single injection, we reassessed the patients four years after the injection using the same method.

Results

Fifteen females (71%) and six males (29%) with mean age 60 years (ranging from 44 to 76 years) were enrolled. After a single PRP injection, there was significant improvement in Lysholm and VAS. Before the injection, VAS medium score was 7 (ranging from 5 to 9) and we observed improvements in all assessments at the first (medium VAS 2), fourth (medium VAS 2) and eighth week (medium VAS 2) post injection and was still better than the pre injection score after 4 years (medium VAS 4). This was also observed in Lysholm score. The pre injection score was 41; at 8 weeks, 84; at 4 years, 66.

Conclusion

PRP injection achieves good results in the symptomatic treatment of Kellgren-Lawrence grade 3 KOA. This study confirmed that a single PRP injection can provide a long-term effect in pain reduction and functional status improvement in KOA, despite the progression of the disease. Further studies with more patients and randomized double blinded controlled studies are recommended to confirm these results.
Slovenska priporočila za obravnavo odraslih bolnikov z eozinofilnim ezofagitisom
Authors: Tepeš Bojan , Novak Gregor , Volfand Jasna , Tepeš Katja , Stefanovič Milan , Štabuc Borut
Published: August 2024

Eosinophilic esophagitis (EoE) is a chronic immune-mediated inflammation of the entire esophageal wall that causes dysphagia and food impaction in adult patients, feeding problems, upper abdominal and sternal pain with associated vomiting in children. The diagnosis is made on the basis of histological analysis of biopsies of the esophageal mucosa (at least 6 biopsies) and evidence of eosinophilic inflammation with ≥15 eosinophilic granulocytes per high-magnification field or with evidence of >60 eosinophilic granulocytes/mm2 and the absence of other diseases associated with eosinophilic inflammation of the esophagus. Eosinophilic esophagitis represents a Th2 immune response to food allergens in genetically predisposed patients. It is estimated that the disease is present in 1/2000 inhabitants. Patients often have associated other allergic diseases such as asthma, allergic rhinitis, eczema, atopic dermatitis.
Untreated disease can lead to stenotic changes of the entire esophageal wall. The clinical picture of adults is dominated by symptoms of dysphagia, food impaction, or retrosternal pain. Between 7%–17% of patients with proven EoE have a normal endoscopic picture of the esophagus. Other patients have signs of longitudinal furrows, rings (trachealization of the esophagus), whitish exudates, mucosal edema and/or a narrowed esophagus or esophageal strictures.
There are three possible forms of treatment: elimination diets, treatment with proton pump inhibitors, or treatment with topical corticosteroids. The success of the treatment is assessed by endoscopy and 6 biopsies of the esophagus 3 months after the initiation of treatment. When the patient achieves histological and clinical remission, it is necessary to continue the treatment permanently. In maintenance treatment, we usually use half doses of drugs used for successful inicial treatment or elimination diet. If the fibrostenotic form of the disease occurs (long-term undiagnosed disease without treatment), endoscopic dilatation of the esophagus is necessary.
Value assignment of Standard Reference Material® 1849b infantadult nutritional formula I
Authors: Wood Laura J , Barber Charles A , Scruggs Bruce E , Sieber John R , Wood Elena SC , Yen James H , Yu Lee L
Published: August 2024

The National Institute of Standards and Technology (NIST) Standard Reference Material® (SRM®)1849b Infant/Adult Nutritional Formula I delivers certified or non-certified values for over 100 analytes. This material is intended to be used for the evaluation of methods for the determination of elements, amino acids, fatty acids, nucleotides, proximates, sugars, and vitamins and in this and similar matrices. The material was purchased pre-packaged from a commercial vendor. The measurement results used to assign values to the measurands were provided by NIST staff, the manufacturer, and/or interlaboratory comparison exercises. This document describes the material, measurement processes and results, and data analysis used to produce SRM 1849b.
Pengaruh Brand Image, Harga Dan Produk Terhadap Loyalitas Pelanggan Dimsum Uma Yumcha
Authors: Anita Nurul Cahyani  , Olivia Stephanie Sarwono Putri  , Rayhan Gunaningrat
Published: August 2024

The purpose of this research is: (1) to find out what Dimsum Uma Yumcha is in the popular dimsum market in Solo. (2) to find out the affordable prices offered which influence customer loyalty. (3) to find out the product provided has an effect on customer loyalty. In research it is known that Brand Image, Price and Product influence customer loyalty. This research method is quantitative. The data collection technique used in this research is Probability Sampling. The population in this study were all people who consumed Uma Yumcha Dimsum products in Solo Raya City. The research sample consisted of 100 respondents from the Solo Raya community who had consumed ddimsum. Data processing in this research uses SPPS version 25. The research results show that brand image influences customer loyalty. Price affects customer loyalty. products influence customer loyalty.
Strategi Pemasaran Telur Bebek di Desa Sebalik Melalui Pendekatan Analisis SWOT
Authors: Heri Setiawan  , Rosita Rosita  , Fetty Maretha  , Tika Handayani
Published: August 2024

Marketing strategies are crucial for effectively and efficiently marketing products, especially for egg-laying duck breeders in Sebalik Village, located in one of the water areas in South Sumatra. A SWOT analysis is used to examine both external and internal factors in Sebalik Village, including strengths, weaknesses, opportunities, and threats. This research employs descriptive qualitative methods. According to the SWOT analysis, the duck egg marketing business is positioned in quadrant IV, indicating that a turnaround strategy focused on WO (weakness-opportunity) is the most appropriate. The WO strategy highlights the importance of surviving by addressing existing weaknesses and capitalizing on as many opportunities as possible. Steps that can be taken in this strategy include: 1) Increasing the Knowledge and Capabilities of Business Actors, namely providing training and education to business actors to increase their capacity in running a business. 2) Product and brand innovation, namely developing innovations in products, brands and packaging that reflect the characteristics of the product to make it more attractive in the market. 3) Use of social media and influencers such as using social media and influencers as a promotional tool to expand consumer reach. And 4) Selecting a strategic distribution location, namely determining distribution channels that are close to consumers to facilitate access and increase sales.
Optimalisasi Seating Space Layout pada Groovy Space Coffee and Kitchen di Kota Bogor
Authors: Zaqia Yuliana Pratiwi  , Heni Pratiwi  , Hanakayda Khairunnisa  , Wawan Oktariza  , Tina Nur Ainun
Published: August 2024

Groovy Space Coffee and Kitchen is a coffee shop located in the Bogor City area that serves several types of drinks such as coffee and tea and several foods, both snacks and heavy meals. This research aims to optimize the layout of the sitting room at Groovy Space Coffee and Kitchen using the Activity Relationship Chart (ARC) method based on the results of the Total Cleseness Rating (TCR) calculation. The ARC method is used to determine optimal seating space layout arrangements by considering the shape of the room and the available area. Meanwhile, the TCR method is used to overcome potential conflicts in the use of seating space, such as the density of visitors at certain times. The application of these two methods is expected to produce a seating space layout that is efficient, comfortable, and able to better accommodate the number of visitors. The results of this research show that the new layout is more effective and efficient compared to the previous layout with the results showing that the new layout includes additional seating in the outdoor area and also a change in concept from outdoor to semi-outdoor.
Analisis Bauran Distribusi Pada PT. Dakota Cabang Indragiri Hulu Provinsi Riau
Authors: Muhklas Adi Putra  , Said Afriaris
Published: August 2024

Companies need a marketing activity to distribute goods and connect producers to consumers, so that the products produced reach the community, one of which is through the right distribution channels. The research method used is a type of qualitative descriptive analysis research using data collection techniques through interviews, observation and documentation. The results of this study indicate that the distribution mix at PT. DAKOTA Branch of Indragiri Hulu Agen Belilas is seen from the distribution channels used and the distribution channel procedure in distributing complementary food products for Mother's Milk (MPASI) in Indragiri Hulu Regency, Riau Province.
AI-Driven Marketing Solutions For Ethical Product Branding In MSMES
Authors: Erwin Ernestus Kadar Slamet  , Tiur Ayya Zakiyah
Published: August 2024

This research aims to explore the efficacy of AI-driven marketing solutions in facilitating ethical product branding within Micro, Small, and Medium Enterprises (MSMEs). The research adopts a descriptive model, employing purposive sampling to gather data from a diverse range of MSMEs engaged in ethical product branding practices. Data analysis utilizes thematic analysis to identify patterns and insights from qualitative data. The study aims to unveil the impact of AI-driven marketing strategies on enhancing sustainability and ethical branding efforts among MSMEs. Results are expected to shed light on the effectiveness of these solutions in fostering responsible consumerism and promoting sustainable business practices within the MSME sector, thereby contributing to the discourse on ethical marketing and sustainable development.