bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Penggunaan Aplikasi TikTok terhadap Produktivitas Belajar Mahasiswa di Yogyakarta
Authors: Haryanto Milfian , Sidauruk Agnes Citra , Hendy Yohani Baptista , Sabailaket Januarti Anjela , Purba Dihan Rahul , Handoyo Emanuel Ristian
Published: December 2023

Abstrak. TikTok adalah aplikasi yang berisi konten video yang berasal dari Tiongkok dan dirilis sejak bulan September pada 2016. Menurut Bussines of Apps pengguna TikTok di Indonesia mencapai 109,9 juta pengguna dan menduduki posisi kedua pengguna aplikasi TikTok terbanyak di dunia. Pengguna TikTok terbesar merupakan Generasi Z pada jarak umur 18 hingga 24 tahun. Penelitian ini mempunyai maksud agar menemukan pengaruh penggunaan aplikasi TikTok terhadap produktivitas belajar mahasiswa di Yogyakarta. Metode penelitian yang dipakai adalah metode kuantitatif dengan model analisis data yaitu Path Analysis. Hasil penelitian membuktikan ada pengaruh secara tidak langsung dari penggunaan aplikasi TikTok dalam efektivitas belajar dan percepatan laju belajar para mahasiswa. Selain itu, kemudahan dalam penggunaan aplikasi TikTok yang memiliki pengaruh secara tidak langsung dari efektivitas dan percepatan laju belajar para mahasiswa. Dapat disimpulkan bahwa penggunaan aplikasi TikTok secara tidak langsung mempengaruhi efektivitas serta percepatan laju belajar para mahasiswa di Yogyakarta. 
Abstract. TikTok is an application that contains video content originating from China and was released since September 2016. According to the Business of Apps, TikTok users in Indonesia have reached 109.9 million users and occupy the second position with the most TikTok application users in the world. The biggest TikTok users are Generation Z at the age range of 18 to 24 years. This study has the intention of finding the effect of using the TikTok application on student learning productivity in Yogyakarta. The research method used is a quantitative method with a data analysis model, namely Path Analysis. The results of the study prove that there is an indirect effect of using the TikTok application on learning effectiveness and accelerating student learning rates. In addition, the ease of using the TikTok application has an indirect effect on the effectiveness and acceleration of students' learning rates. So, it can be concluded that the use of the TikTok application indirectly affects the effectiveness and acceleration of the learning rate of students in Yogyakarta.
Anthropometric Profile and Nutritional Intake in a Tunisian Population of Medical Students
Authors: Safi Eya , Htira Yosra , Hadj Ali Zohra , Hedfi Imene , Jemai Chaima , Ben Mami Faika
Published: December 2023

Young students, in particular those in the medical field, seem to have poor eating habits and therefore inadequate nutritional intake. We aimed to study the anthropometric and nutritional profile of a Tunisian population of medical students.
We conducted a descriptive cross-sectional study at the Medical University of Tunis between November 2019 and May 2020. It included 250 students. Each student benefited from a dietary survey and anthropometric measurements.
A female predominance was noted in 71.2% of cases. The mean BMI was 23.28 [16.01-35.67] kg/m2. Abdominal obesity was present in 30% of cases.
More than a third of the students had a hypocaloric (38.4%) or hypoglucidic (41.2%) intake. The majority (82.4%) had a high protein intake and 51.6% had a high fat intake.
Regarding micronutrients, iron deficiency was noted in more than half of the cases (55.8%). Insufficient vitamin D intake was found in two-thirds of the cases (68.8%). Dietary fiber intake was insufficient in most students (84.4%).
These results justify the need for providing nutritional education among medical students in order to preserve the physical and mental health of future caregivers.
Prohibition of Refund of Knowingly Unnecessary Performance: Interpretation and Application of Paragraph 4 of Article 1109 of the Civil Code of the Russian Federation
Authors: Khandkarov Iu.S.
Published: December 2023

The controversial formulation of paragraph 4 of Article 1109 of the Civil Code was the reason for its incorrect application. This led to the idea of the need for a restrictive interpretation of this norm. This approach, which originated in jurisprudence, has now been largely overcome by it, but it remains predominant in legal doctrine. Meanwhile, judicial practice has not yet formed a unified understanding of paragraph 4 of Article 1109 of the Civil Code. The present research aims to study the relevance of rejecting a restrictive interpretation of paragraph 4 of Article 1109 of the Civil Code. The article examines the history, foreign analogues, the nature and practice of application of this norm. As a result of the work the conclusion is made about the necessity of an expansive interpretation of paragraph 4 of Article 1109 of the Civil Code as a particular manifestation of the principle of good faith and the prohibition of abuse of right. Keywords: unjust enrichment; defence to a claim; no mistake in the victim’s actions; good faith; prohibition of abuse of right; estoppel.
Division of Legal Entities into Commercial and Non-Profit Organizations
Authors: Grigoriev V.I.
Published: December 2023

In this article, the author analyzed the division of legal entities into commercial and non-commercial, rooted in science and legislation. As a result of the analysis of domestic and foreign experience, it was concluded that Russian law does not actually make a clear separation between commercial and non-profit organizations, while in foreign law only one criterion acts as the basis for division – a ban on profit distribution. In this regard, the author proposes to take into account foreign experience and abolish the restriction on non-commercial activities as a general rule. In addition, the author offers a more thorough analysis of the rules of law, the hypothesis of which, if interpreted literally, is designed to apply to commercial or non-profit organizations. Keywords: legal entity; legal capacity; business activity; profit.
The Scope of a Public Contract
Authors: Gromov A.A.
Published: December 2023

The scope of a public contract remains extremely uncertain to this day. Within the framework of this study, an attempt was made to outline the possible boundaries of this institution. As a result, the author came to the conclusion that there are four signs of a public contract, including: the specific nature of the activity of the obligated person; carrying out this activity in relation to everyone who applies; special requirements to the participants both on the side of the obligated person and on the side of the authorized person. The first part of this article examines Russian legislation, which reflects the institution of a public contract; German experience; as well as one of the signs of a public contract, namely: the nature of the activity of the obligated person.
Roman Law Among Pandectists and Roman Law Among Romans
Authors: Cardilli Riccardo
Published: December 2023

This article, written by Professor Riccardo Cardilli, explores the evolution of views on Roman private law. The article delves into the methodological and ideological factors that influenced the recovery of knowledge about ancient Roman law. Special attention is given to the role of Roman sources in the development of pandect law, including doctrinal positions, as well as the doctrine of transactions according to pandectists. The author presents the views of different schools of law on the concept of obligation, which stem from differences in views on Roman sources. R. Cardilli concludes that Roman law and legal history have the potential to critique existing legal categories and reveal their ideological impact through historical context.
Impacto ambiental por uso y manejo de plaguicidas químicos en cultivo de manzanas variedad San Antonio – Antioquía
Authors: Gomez Escriba Benigno Paulo
Published: December 2023

El objetivo de la investigación fue determinar el nivel de impacto ambiental por uso y manejo de plaguicidas químicos en cultivo de manzanas variedad San Antonio, situado en el centro poblado Chillaco, Antioquia, con la finalidad de contribuir al manejo adecuado de plaguicidas químicos y lograr el desarrollo agrícola sostenible en la localidad. Se realizó visitas de observación directa a las parcelas y se aplicó cuestionario a los agricultores (29) que acreditaron dedicarse al cultivo de manzanas San Antonio de forma permanente. Los resultados muestran que los plaguicidas químicos más usados para el control de plagas, enfermedades y malezas son: Tifón 4E, Cipermex super 10 CE, Ciclón, Tenaz 250 EW, Acarstin L600, Vydan 250 EC, DK-PRID 35 % SC, Topas 100 EC y Roundup, entre otros, que contienen ingredientes activos como clorpirifós, cipermetrina, dimetoato, imidacloprid, cyhexatin, penconazol y glifosato de categoría toxicológica moderadamente peligrosos. En cuanto a su manejo, el 17.24 % de agricultores realizan triple lavado de envases y los acopian para venta, el 31.03 % realizan triple lavado y los queman, el 51.72 % realizan triple lavado y los tiran al ambiente. El 100 % usa motor estacionario para fumigar; el 100 % aplica la dosis indicada en ficha técnica del plaguicida; el 100 % de agricultores usan equipos de protección personal incompleta y el 86.21 % de agricultores nunca recibieron capacitación. El nivel de impacto ambiental es alto, por la elevada toxicidad de los plaguicidas que se usan.
Mišljenje Pacijenata i Medicinskih Sestara/Tehničara o Profesionalnom Izgledu u Sestrinstvu
Authors: Galović Lidija , Farčić Nikolina , Lasić Ivana , Barać Ivana , Gvozdanović Zvjezdana
Published: December 2023

Aim. To examine the opinion of patients and nurses about professional appearance in nursing in relation to gender and age and to examine how they perceive professionalism. Methods. Respondents in the cross-sectional study were nurses and patients. An anonymous questionnaire created for the purpose of this research was used to collect data. Results. A total number of 764 respondents participated in the research. Male respondents show significantly more agreement with the statement that the physical appearance of the female nurse (p=0.003) / male nurse (p=0.005) affects the satisfaction with the health care provided. Respondents of older age groups show significantly more agreement with the statement that a female nurse dressed in a skimpier uniform will attract the attention of male patients and that during working hours she should cover the tattoo/piercing, unlike younger respondents. Compared to medical workers, patients show significantly more agreement with the statement that the physical appearance of female nurses is not related to their expertise (p=0.001), and that they would feel more comfortable if they were taken care of by a female nurse that is properly dressed (p=0.05). Both female and male nurses show significantly more agreement with the statement that the uniform should not put them in an uncomfortable situation (p=0.004). Conclusion. Most respondents believe that both female and male nurses should be properly dressed in the workplace and respect the provisions of professional appearance.
The Benefits of Virtual Reality in Preventing Falls in Older Adults
Authors: Liška Franjo
Published: December 2023

Introduction. The aging of the human organism brings with it a decrease in bodily functions, both motor and cognitive, and the probability of developing numerous diseases and conditions increases. The most common difficulties faced by the elderly are reduced ability to control balance and control gait due to muscle weakness and reduced coordination. The consequences of falls in elderly population are increase in mortality and morbidity and effects on quality of life, and work is needed to prevent falls in this population. Over the past few decades, the integration of information and communication technology (ICT) into healthcare has given rise to a novel research field. One prominent aspect within this field is the widespread adoption of virtual reality (VR) and/or exergaming in various medical areas. This study aims to explore the potential usability of virtual reality and exergames as a preventive measure against falls in older adults. Methods. A search of literature was conducted through PubMed and Scopus databases, using search strings and inclusion and exclusion criteria. Results. A total of 330 papers were identified through databases search, and after study selection process, 8 studies were included in this review. Conclusion. The use of these interventions has a promising effect on improving the balance, gait, motor, and cognitive functions of the older adults, which are all factors that are correlated with a reduction in the risk of falls in the studied population.
Addressing the Need to Set a Framework for the Education of Nurses in Psychooncology in Developing Countries
Authors: Gašpert Tihana , Bošković Sandra , Kuljanić Karin
Published: December 2023

There is a need to study the impact of nursing care in psychosocial treatment in developing countries. The aim is to emphasize the importance of psychooncological education for oncology nurses in order to identify and create a framework for implementation. A systematic review was conducted. The literature was searched for in the Medline database. The inclusion criteria were articles in English published in the last five years within the Web of Science Category: Nursing. After filtering articles by the inclusion criteria, 107 results were found, and this review includes 14 articles. Psychosocial interventions positively affect the progression of illness, psychosocial condition, symptoms, treatment and side effects. However, nurses have little opportunity to receive education on the psychological care. Therefore, in the field of psychooncological nursing care, it is necessary to improve the education and training systems for psychological assessment and stress management.
Перспективи розвитку біоекономіки замкнутого циклу в Україні
Authors: Талавиря Микола , Газуда Леся , Газуда Михайло
Published: December 2023

В сучасних умовах розвитку сільського господарства та сільських територій особливо важливого значення набуває розвиток біоекономіки замкнутого циклу. Подолання сучасних і запобігання ймовірним екологічним кризам неможливі без чіткого розуміння розвитку біоорієнтованої економіки, яка базується на знаннях. Важливими напрямами також мають стати розробка екобіотехнологій, спрямованих на виробництво біогазу та водню з органічних відходів, мікробіологічна деструкція ксенобіотиків, застосування біоіндикації та біотестування в системі екологічного моніторингу. Розвиток біоорієнтованої економіки тісно пов’язаний з формуванням відповідної законодавчої, інституціональної і соціальної структур, на формування яких впливають наукові розробки провідних вчених світу. У статті охарактеризовано сутність поняття біоекономіки, біоекономіки замкнутого циклу. Визначено п’ять напрямів діяльності ФАО щодо сприяння переходу до стійкої біоекономіки замкнутого циклу з метою вдосконалення виробництва, підвищення якості харчування і рівня життя, і поліпшення стану навколишнього середовища. Визначено проблемні питання, які потребують вирішення задля позитивного розвитку біоекономіки замкнутого циклу в Україні. Обґрунтовано рекомендації та організаційно-методичні підходи до розвитку біоекономіки замкнутого циклу в Україні.Ключові слова: біоекономіка, біоорієнтована економіка, біоекономіка замкнутого циклу, інформаційні технології, біотехнології
Аграрне підприємництво та його місце в економіці України
Authors: Палійчук Євгенія , Пінцак Святослав , Свирид Катерина
Published: December 2023

Статтю присвячено проблемам розвитку аграрного підприємництва та визначенню ролі аграрної сфери в економіці країни. Агробізнес є однією з основних форм підприємництва в аграрному секторі економіки України. Всі виробничі та обслуговуючі фірми й організації, які функціонують у сфері АПК, є структурними елементами агробізнесу. У дослідженні проаналізовано стан розвитку аграрного підприємництва в Україні порівняно з минулими роками. Зроблено висновки щодо тенденцій і шляхів розвитку українського аграрного підприємництва.Ключові слова: аграрне підприємництво, агропромисловий комплекс, агробізнес, сільське господарство
Сучасний стан стратегічного партнерства України зі Сполученими Штатами Америки: правові аспекти
Authors: Черевко Павло , Черевко Павло , Черевко Ірина
Published: December 2023

У статті досліджується проблематика стратегічного партнерства України зі Сполученими Штатами Америки в сучасних умовах анексії Криму та війни на Сході України. Розглянуто особливості сучасних відносин України із США в контексті спільної заяви президентів Володимира Зеленського та Джо Байдена про стратегічне партнерство, а також Хартії про стратегічне партнерство України та США в новій редакції від 14 листопада 2021 р. Проаналізовано роль США у реалізації Україною євроатлантичного поступу, позицію Джо Байдена, озвучену на саміті НАТО у липні 2021 року, та реакцію Володимира Зеленського в контексті цих питань. Визначено низку проблемних аспектів впровадження положень Хартії стратегічного партнерства України та США в контексті завдань реінтеграції Донбасу. Зроблено висновки щодо необхідності реалізації Україною практичних кроків щодо виконання взятих зобов`язань у рамках спільної заяви президентів щодо стратегічного партнерства, зокрема завершення судової реформи, реформування Служби безпеки України та інше.

Ключові слова: стратегічне партнерство, США, Україна, Хартія, НАТО, перспективи України, безпека, агресія Росії, деокупація.
Державна екологічна політика в умовах децентралізації влади в Україні
Authors: Кононенко Інна
Published: December 2023

У статті досліджено основні актуальні аспекти національної екологічної політики у сучасних умовах децентралізації влади. Визначено проблемні питання її практичної реалізації на різних рівнях публічного управління. Наголошено на нових викликах щодо реалізації екологічної політики, пов’язаних з трансформаційними процесами в Україні. Зазначено про відсутність розвиненості мережі екологічних комунікацій (освіти, підвищення рівня екологічної свідомості, посилення ролі екологічної складової у міжсекторальному партнерстві). Представлено різні підходи до визначення «екологічна політика». Наведено ключові напрями державної екологічної політики. Наголошено, що у формуванні та реалізації екологічної політики основна роль відведена не лише державі. У цьому процесі беруть участь інші суб’єкти (політичні партії, наукові організації, органи місцевого самоврядування, неурядові громадські організації тощо), що перетворює екологічну політику на об’єкт публічного управління. Запропоновано екологічну політику розглядати як координуючу основу в системі публічного управління, що здатна формувати, накопичувати, розвивати та рухати всі види ресурсів (фактичних та потенційних), які стосуються раціонального природокористування, охорони навколишнього середовища, забезпечення екологічної безпеки у напрямі досягнення визначених цілей. Окреслено пріоритети державної екологічної політики. Встановлено, що цілі державної екологічної політики не лише взаємопов’язані між собою, а й доповнюють одна одну. Запропоновано визнати ціль, яка покликана формувати екологічну свідомість, цінності, екологічну освіту. Підкреслено, що у зв’язку з реалізацією політики децентралізації особливого значення набувають органи місцевого самоврядування, які мають право затверджувати місцеві екологічні програми. Наголошено, що на локальному рівні успіх екологічної політики залежить від результатів взаємодії і співпраці ОМС та громади й різних суспільних груп.

Ключові слова: екологічна політика, децентралізація влади, публічне управління, екологічна культура.
Genetic diversity and evolutionary patterns of SARS-CoV-2 among the Bhutanese population during the pandemic
Authors: Dorji Tshering , Dorji Kunzang , Wangchuk Tandin , Pelki Tshering , Gyeltshen Sonam
Published: December 2023

Objectives: The coronavirus disease 2019 (COVID-19) pandemic, caused by a dynamic virus, has had a profound global impact. Despite declining global COVID-19 cases and mortality rates, the emergence of new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants remains a major concern. This study provides a comprehensive analysis of the genomic sequences of SARS-CoV-2 within the Bhutanese population during the pandemic. The primary aim was to elucidate the molecular epidemiology and evolutionary patterns of SARS-CoV-2 in Bhutan, with a particular focus on genetic variations and lineage dynamics.Methods: Whole-genome sequences of SARS-CoV-2 collected from Bhutan between May 2020 and February 2023 (n=135) were retrieved from the Global Initiative on Sharing All Influenza Database.Results: The SARS-CoV-2 variants in Bhutan were predominantly classified within the Nextstrain clade 20A (31.1%), followed by clade 21L (20%) and clade 22D (15.6%). We identified 26 Pangolin lineages with variations in their spatial and temporal distribution. Bayesian time-scaled phylogenetic analysis estimated the time to the most recent common ancestor as February 15, 2020, with a substitution rate of 0.97×10–3 substitutions per site per year. Notably, the spike glycoprotein displayed the highest mutation frequency among major viral proteins, with 116 distinct mutations, including D614G. The Bhutanese isolates also featured mutations such as E484K, K417N, and S477N in the spike protein, which have implications for altered viral properties.Conclusion: This is the first study to describe the genetic diversity of SARS-CoV-2 circulating in Bhutan during the pandemic, and this data can inform public health policies and strategies for preventing future outbreaks in Bhutan.
Hacia una necesaria desnaturalización de las interfaces
Authors: Torrez Sebastián Agustín
Published: December 2023

Ficha técnica:

Título: Nanofundios: crítica de la cultura algorítmica

Año de edición: 2022                                       

Autor: Agustín Federico Berti

Editorial: Editorial de la UNC - La Cebra

Ciudad de edición: Córdoba - Adrogué

Págs: 232
Un recurso jurídico de apelación
Authors: Buisel María Delia
Published: December 2023

Siguiendo los capítulos 21-28 de los Hechos de los Apóstoles tratamos el conflicto entre el apóstol Pablo y las autoridades tanto del Templo de Jerusalén como con el Tribunal del Sanedrín, que quieren su condena a muerte. Examinamos los alegatos de Pablo ante ambos, su exculpación por acusación dolosa y falta de pruebas, la invalidez para juzgarlo ya que como ciudadano romano le corresponden autoridades romanas, las artimañas de sus acusadores, sus dos juicios ante la procuración imperial en Cesarea, los dos años de prisión, la apelación al César, el juicio ante el rey Herodes Agripa II, su llegada a Roma después de un accidentado viaje y el resultado positivo de su apelación. Incorporamos el interesante comentario de F. de Quevedo, muy poco considerado.
Contentus vivere parvo. Tiempos de vida sencilla en la elegía I, 1 de Tibulo
Authors: Grimozzi Chiara
Published: December 2023

Tibulo contrapone en la elegía I, 1 la vida de opulencia del soldado con la de pobreza del agricultor. Teniendo en cuenta los aportes de Fisher (1970), Gaisser (1983) y Galán (1998), proponemos a modo de hipótesis que la elegía I, 1 (vv. 1-10, 25-28, 41-52 y 75-78) de Tibulo se estructura a través del deseo de una vida sencilla en el campo en armonía con la naturaleza, y se construye a partir de la oposición con la vida del soldado, mediante la repetición de las palabras divitiae, aurus, adsiduus, securus, acervus, somnus, parvus, via y aqua.
Justicia social, la Educación en otras palabras
Authors: Giordano Carlos , Morandi Glenda
Published: December 2023

Corsi é ricorsi. Es necesario volver a convocar -dándole, al menos por un rato, la razón a don Giambattista (Vico)- el derecho humano universal y el bien social con que hemos venido produciendo la contemporaneidad de la Educación Superior. No es una reivindicación, ni un recurso retórico formal. Es un “conjuro”. No es una autodefensa de los puestos de trabajo, solamente. Es, fundamentalmente, la definición de cómo concebimos cada posibilidad de cada “otro” que nos complementa, identifica e integra.

No es una declaración baladí, ni es ocasional la circunstancia: así como es liminar, es irrenunciable manifestarlo ahora mismo, en nuestra Argentina, en la Universidad Nacional de La Plata. La Educación Superior es la producción de aquel derecho y la constitución continua de lo social de aquel bien.
Experiencias de políticas de articulación internivel desde la Universidad Nacional de Quilmes
Authors: Grassi Luciano , Belizan Alejandra , Alonso Marisa , García Juan , Sabaini María Belén , Leguizamón Laura
Published: December 2023

Este artículo presenta una serie de experiencias de articulación educativa que tuvieron lugar entre la Universidad Nacional de Quilmes (UNQ) y las instituciones del sistema educativo provincial y nacional durante el periodo 2022-2023. Estos proyectos están en línea con el interés de la institución en la articulación interniveles y reflejan una política institucional que busca garantizar el derecho a la educación y la continuidad de los estudios superiores; siendo ésta además una determinación que la posiciona como referente en la construcción colectiva del conocimiento en la región promoviendo su democratización.

En este escrito nos referiremos actividades implementadas vinculadas al diseño y elaboración de actividades conjuntas tanto para docentes como para estudiantes, a la reflexión, la formación y actualización profesional, a la divulgación del conocimiento, a la circulación de recursos y materiales educativos, y a la producción de saberes desde, para y con actores del territorio. Estas propuestas se encuentran hoy en diferentes grados de desarrollo, avanzando con sus ajustes y continuidades.  A los efectos de organizar esta comunicación, decidimos realizar una breve presentación institucional recuperando las principales acciones que históricamente caracterizaron a la Universidad Nacional de Quilmes en materia de políticas de articulación con la comunidad educativa. En un segundo apartado, presentaremos una descripción de dichas experiencias poniendo foco de aquellos aspectos que definieron criterios organizadores:  el período en el que se llevaron adelante, la frecuencia con la que se desplegaron dichas acciones, los destinatarios y las destinatarias de las mismas, los objetivos que guiaron las acciones, las áreas de interés que involucraron, las producciones realizadas  y los  materiales elaborados. Por último, expondremos una serie de dimensiones de análisis que aportan a la construcción de algunas nociones que contribuyan a la identificación de problemáticas, aprendizajes y desafíos futuros que continúen nutriendo y enriqueciendo la construcción de una perspectiva institucional.
Knowledge networks in the era of Covid-19
Authors: García Lirios Cruz
Published: December 2023

Roughly speaking, knowledge networks are explained from a neural network in which degrees of learning are established, considering the differences between the input layer, the intermediate or hidden layer and the output layer. A non-experimental, cross-sectional and exploratory study was carried out with a non-probabilistic selection of 300 students, managers and teachers from a public university in central Mexico. The results show a factorial asymmetry of one input layer unit for three output layer units, suggesting that there is a significant degree of learning around the knowledge network. However, there are areas of opportunity around the hidden layer, since its units reveal information processing that reduces the uncertainty of the input layer and amplifies the knowledge of the output layer.
Contingency Assessment for Power System Integrated with Wind Power
Authors: G. Rashid Yasir , Mohammed Tuaimah Firas , Salem Mohamed
Published: December 2023

Electric demand in the last few years has widely increased, especially in Iraq, where there is a significant difference between the generation and the load in almost all months of the year, particularly in the summer season. One of the important aspects where the operational engineers must take appropriate action in case of an unforeseen catastrophe is power system security. Consequently, the security of the power system depends on the contingency analysis. In order to investigate the impact of wind power on the contingency analysis, three wind farms (WFs) are selected based on the wind's speed availability in Iraq, which are Shaikh Saad, Al-Dujaili, and Al-Fajar. In addition, the wind speeds for these locations are analysed using the Weibull and Rayleigh probability density functions. In this regard, this paper studied and analysed the impact of integrating wind power on the operation of the 132 kV Iraqi grid systems (zone 18). The results show that when line outage contingencies occur (single- and double-line outages), the risk of power flow violations based on the MVA rating will be reduced when integrating wind energy with a 100% integration rate with the Iraqi grid system. Matlab, a programming language, and the Power System Simulator for Engineering (PSS/E) software (Version 32) are used to simulate the proposed approach of integrating wind power into the grid.
Behavior of Smart Beams Reinforced with Superelastic Shape Memory Alloy Rebar (SMA)Subjected to Repeated Loading
Authors: M. Hannun Karrar , L. Abbas Ali
Published: December 2023

A reinforced concrete beam with shape memory alloy rebar (SMA) is a novel form of smart beam used in smart seismic structural systems to reduce the effects of earthquakes while keeping nearly the same load-carrying capability as conventional concrete beams. The experimental research investigation is carried out to study beams' flexural behavior by replacing some steel rebars with shape memory alloy rebars (SMAs) in the longitudinal reinforcement zone. The experimental program included testing three beams to investigate the effects of the replacement of longitudinal steel rebar by shape memory alloy rebar on the flexure behaviour of beams. The beams were tested by the repeated load. The study was focused on determining ultimate load, maximum deflection, and load-deflection behaviour. Experimentally, the flexure behaviour beams are significantly affected by changing the number of reinforcing bars with shape memory alloys (SMA) longitudinal direction. However, for using one rebar of shape memory alloy as a longitudinal reinforcement, the replacement of one bar and two bars of shape memory alloy SMA beams have less yield load than the control beam by about (12.5%) and (37.5%) respectively. The replacement of one bar and two bars of shape memory alloy SMA beams having less ultimate load compared with reference beam by about (9.82%) and (21.94%) respectively. Because of its superelasticity quality, the introduction of superelastic SMA bars to the beam shows excellent recentering ability.
Evaluation of Methods to Enhance the Ocean Wave Energy Convertor Performance
Authors: Al-jabar Hashim Aous Abd , Abbas Abdul Mun’em , Abed Layth , Al-Samari Ahmed , Akroot Abdulrazzak
Published: December 2023

Ocean energy represented by waves is considered as a one of the renewable energy sources. This study aims to evaluate the methods that enhancing the ocean wave energy convertor performance. The mechanism of wave energy convertor is by converting mechanical energy to an electricity energy using DC generator and running by the pulling of wire due to ocean wave movement. Moreover, the test and analyze of converting the wave energy to electricity are conducted. Firstly, the role of numerical modeling lies in fabricating the tested rig in addition to study and analyze the buoyancy and stability in fluid mechanics as results of converting the kinetic energy derived from sea waves into rotational energy. The experimental tests were achieved locally at the Arabic gulf-South of Iraq/Basra (Khor Alzubayr). the tests were performed in two cases named: after happening the tidal (tested in one direction) and at the increasing of the sea water (tested in bidirectional). The results of local tests (at the sea) show that the maximum power of test was recorded value about 68 W in case of happening the tidal with an increase percentage of 92.6% over the case of bidirectional. These findings encouraging for more investigation in the methods that could increase energy harvesting from ocean waves since it is an enormous amount of energy.
Geotechnical Behaviour of Gypseous Soil Treated by Geopolymer Additives
Authors: Mahmood Tanya Ekram , Hussein Hamed Majid , Ibrahim Ali Kadhim
Published: December 2023

Gypseous soil is well-known for its numerous engineering problems. When this soil is exposed to water, the gypsum in the soil dissolves, causing the buildings built on it to collapse; so, treating gypseous soil is important for improving its engineering characteristics. The present paper focuses on studying the effect of adding geopolymer on mechanical characteristics of gypseous soil. This study presents the results obtained from a series of experimental tests, including direct shear, consolidation, and collapsibility tests. Tests were conducted on samples of gypseous soil taken from depth 1.5 meters below ground level with gypsum content of 41%. The geopolymer was used in three different molarities for the collapse test (10M, 12M, and 14M) and a 14 molarity only for the shear and consolidation tests, where equal proportions of fly ash were combined with an alkaline activator that was composed of sodium hydroxide and sodium silicate. The binder (fly ash + alkaline) to the soil was added to the treated samples during mixing at a rate of 20% by weight. The findings showed that treating the soil with geopolymer leads to a notable enhancement in the angle of internal friction of the soil particles from (37 to 42) degrees. as well as a reduction in the soil compressibility and a reduction in the susceptibility of the soil to collapse, with an improvement degree of 64% when using a geopolymer with a molarity of 14 M. This improvement was achieved by using a geopolymer with a higher concentration of NaOH. The best results were achieved when a geopolymer with a molarity of 14 was used, which is the ideal ratio.
Crack Growth Model for Evaluation the Fatigue Life of Aluminum Alloys
Authors: Chaloob Zahraa M. , T. Faris Saad , Al Alkawi Hussien J.M. , H. Mohamed Ali
Published: December 2023

The main objective of this study is to experimentally determine the fatigue life of the aluminum alloys AA2014 and AA7075-T651 by measuring the lengths of short and long cracks practically under bending stress with constant amplitude loading and stress ratio (R = -1) at room temperature (RT) 25 C0 by employing Basquin's equation. To determine the fatigue life curve for both alloys at five different levels of constant amplitude stresses, the average failure cycles of three specimens at each stress level were recorded. The surface of specimen was replicated with cellulose paper and liquid acetone. This piece was examined using an optical microscope to record the length of the crack and the number of cycles corresponding to it at a constant stress level. The lengths of the cracks were then measured using the replication approach. A unique mathematical model was created to describe the relationship between crack speed (da/dN) and the length of short and long cracks in order to predict the overall fatigue life of each alloy. When the model's result was contrasted with actual outcomes, the conclusions were reliable and productive.
Inoculating mycorrhiza fungi and growth-promoting bacteria and mulch of plant residues improve yield and essential oil production of anise (Pimpinella anisum L.)
Authors: Ebrahimi Zahra , Fateh Esfandiar , Soorestani Mohammad Mahmoodi , Ghorbanpour Mansour
Published: December 2023

This experiment aimed to investigate the effects of Pseudomonas growth-promoting bacteria, mycorrhizal fungi, and living mulch on morphological and physiological traits of a medicinal herb, Pimpinella anisum. The study was carried out using a factorial design in a randomized complete block design arrangement with three replications during the crop year of 2019–2020. The first factor includes the use of biological fertilizers (fungi and bacteria) at four levels: 1) control (without the use of biological fertilizers), 2) mycorrhizal fungi, 3) growth-promoting bacteria, 4) combined use of growth-promoting bacteria and fungi. The second factor includes mulch (plant residues) at four levels: 1) control, 2) wheat straw (3 t/ha), 3) berseem clover mulch (2 t/ha), 4) living berseem clover mulch, cultivated among the rows of anise. Cultivation of clover and anise was done simultaneously. Results showed that the combined use of biological fertilizers (Glomus intraradices and Pseudomonas putida) along with living clover mulch led to a significant increase in seed yield, harvest index, and the essential oil yield of anise. Moreover, under such conditions, the highest seed yield (930.8 kg/ha) and the highest essential oil yield (18.15 kg/ha) increased by 48% and 51% compared to the control, respectively. We found that the use of living clover mulch led to a significant increase in biological yield, seed yield, and the number of umbels and umbellets of anise. Accordingly, the highest biological yield of 5332 kg/ha was obtained, which was 55% higher than the control. The extraction of essential oil components showed that α-pinene and para-cymene showed the highest amount and significant components of essential oil. Moreover, the maximum amount of α-pinene (2.277%) observed upon fungi and living clover applica­tion along with inter-row clover cultivation (increased by 60% compared to the control), and the maximum value of para-cymene (0.2300%) was obtained upon bacteria and living clover inoculation along with inter-row clover culti­vation (increased by 59% compared to the control). Finally, according to the perspectives of sustainable and organic agriculture in medicinal plant cultivation, the use of ecologically compatible inputs such as bacteria and fungi that stabilize food elements, as well as the use of living and non-living plant mulches, can be used as a tool to increase the quantitative and qualitative performance of the anise plant.
Unveiling the Impact of Mobile Fitness Applications on Motivational Orientation in Sustaining Exercise Behaviors: A Qualitative Investigation
Authors: Southcott Evé , Jooste Julius
Published: December 2023

Notably, a lack of motivation appears as a significant contributing factor to physical inactivity, which raises one’s susceptibility to noncommunicable diseases. While research indicates a strong link between smartphone fitness applications (apps) and people’s motivational orientation towards physical activity and exercise, the theoretical basis of fitness app features for sustaining exercise routines remains unclear. Therefore, the purpose of this study was to investigate the utility of fitness apps as a behaviour modification tool on people’s motivation to maintain physical activity and exercise behaviour. Using individual semi-structured interviews, we collected detailed accounts from nine active male and female fitness app users (M
age = 23.4 years, SD = 2.8). The findings of both inductive and deductive reflective thematic analysis revealed core themes emphasising that the use of fitness apps satisfies the participants’ psychological needs through fostering emotions of competence, autonomy, and relatedness. Furthermore, fitness apps make it easier to track progress, challenge oneself, and compete against other exercisers, which further motivates participants to sustain their exercise behaviours. Confirming the use of fitness apps as an effective behaviour change tool for sustaining healthy exercise routines, the findings offer valuable feedback on specific app features for fitness software and wearable device developers that could potentially enhance the functionality and impact of their apps. Further discussions include limitations and areas for future research, such as discerning the role of fitness apps in sustaining motivation among diverse age groups with specific health, sport, or lifestyle goals in varying sensory, social, and affective contexts.
European Cities of Sport as a Strategic Policy for Local Development of Sports: A Perspective from Sports Management in the Last Decade
Authors: Teixeira Mário Coelho , Mamede Nuno Brito , Seguí-Urbaneja Jordi , Sesinando André Dionísio
Published: December 2023

European sports policies have focused on the implementation of public instruments and policy measures, aiming to encourage EU member states to promote and improve sports habits, while simultaneously tackling high levels of sedentary lifestyle among Europeans. Despite these efforts, data concerning the various measures is quite limited, making it impossible to assess the real impact on the population, particularly in the case of the European Cities of Sport. This award has been held since 2007 and has already distinguished 193 cities; however, current knowledge does not allow researchers to theorise about its multiple impacts as a strategic policy instrument for the local development of sport in Europe, thus constituting a gap within sports management research. In order to further this knowledge, we explored European reality over a decade (2013–2022), analysing nine awards of Portuguese cities. We employed qualitative methods for documentary analysis of public information and descriptive statistics for data analysis. The results show that over 2 600 multidisciplinary events were organised, among which 402 had an international character (15%), an average of 50 sports disciplines per edition, 359 events related to culture and education, and involved over 1 000 000 participants, with an overall investment of over €39 million. This research now allows a theoretical-scientific and operational referential pattern of key indicators to be established for future European ECS applications, while demonstrating an encouraging relationship, from a sports perspective and economically, between public investment made and estimated return, thus contributing to better political decisions and to the positive implications of increasing public investment in sport.
The COVID-19 pandemic and refugees. A scoping review
Authors: Deliu Alexandra , Voicu Bogdan , Glăvan Eugen
Published: December 2023

Refugees increasingly become part of the European societies. Afghans, Syrians, Ukrainians fled their countries due to war, conflicts, persecution, and settled, temporary or not, in more stable countries. During pandemics, with openness towards foreigners shrinking, and borders closing, the situation of refugees might become uncertain. Our scoping review explores what academics considered relevant about refugees to Europe in relation to the COVID-19 pandemic. The findings reveal increasing resentment against immigrants, a need for redesigning European migration policies, preparing welfare systems, asylum protection mechanisms, and societies as a whole, in order to prevent disruptions in the eventuality of large-scale crises. Such implications are to also be considered for the consequences of the current Russian aggression on Ukraine.
Keanekaragaman Iktiofauna Ekosistem Estuari Taman Hutan Raya Ngurah Rai, Bali
Authors: Aisya Gabrielle , Pertami Nyoman Dati , Giri Putra I Nyoman
Published: December 2023

The diversity of ichthyofauna is an important aspect that can be used to presume the aquatic environmental conditions. Therefore, this study aims to determine the diversity of ichthyofauna in Taman Hutan Raya (TAHURA) Ngurah Rai, Bali during the eastern season and transitional II season. The sample was collected from July 2022 – October 2022 using an experimental gill net. During the sampling period of this study, 413 fishes were caught, representing 18 different species from 17 genera, 14 families, and 12 orders. Based on the results of the analysis, the highest diversity value was found in the waters of Jimbaran, then the waters of Kampung Kepiting, while Serangan waters has the lowest diversity value (H’<1). The lowest uniformity index was found in the waters of Serangan because it is dominated by only one fish species, namely Ambassis macracanthus (Seriding Fish), while in the waters of Kampung Kepiting and Jimbaran, the uniformity is quite even. The highest dominance index was found in the waters of Serangan, while other water areas has no dominating species. The species composition found at all stations varied considerably, but the results of the IUCN status showed that most of the fishes were still in the category of data deficient and not evaluated. The highest abundance was found in the waters of Serangan. The water quality parameters of TAHURA Ngurah Rai showed that not all aspects are in accordance with quality standards for marine life.
Kandungan Mikroplastik Pada Gastropoda di Kawasan Tahura Ngurah Rai, Bali
Authors: Arijuato Gulielmus Nanda Iobel , Hendrawan I Gede , Darmendra I Putu Yogi
Published: December 2023

The mangrove ecosystem can be affected by the dangers of microplastics, indicated by various associated biota that lives in it, one of them being gastropods. This study aimed to determine microplastics’ content in gastropod body mangrove sediments at Tahura Ngurah Rai, Bali using gastropods as bioindicators. This research was conducted from May to June 2022, using in situ and ex situ methods. In situ, data were conducted at Tahura Ngurah Rai, Bali, as the sampling location, and ex situ data were conducted at Udayana University’s marine science laboratory by sample processing. The data taken includes the characteristics of microplastics, including the type, size, color, and abundance of microplastics in gastropods at the sampling station. Results showed that 5 families of gastropods (Ellobiidae, Littorinidae, Muricidae, Neritidae, and Potamididae) were contaminated with microplastics, with the highest abundance found in Potamididae, with the number 4,06 ± 2,19 particles/individual. The types of microplastics obtained were fragments, fibers, and films dominated by fibers collected 210 particles. The color of the microplastics varies and dominated with black colored microplastics was found 78 particles, and the size of microplastics is dominated by < 1 mm particles with several 145 particles. The highest abundance of microplastics was found on site 12 with the number 5,67 ± 4,04 particles/individual.
Pemetaan Batimetri Perairan Dangkal Menggunakan Citra Satelit Sentinel-2a Dan Landsat 8 Perairan Pantai Matahari Terbit, Bali
Authors: Budaya Ravienkha Raishasaras , Putra Dirgayusaa I Gusti iNgurah , Darmendra I Putu Yogi
Published: December 2023

Bathymetric mapping has an important role for human activities, especially in the marine and fisheries field. However, conventional measurement of bathymetry in coastal areas is quite time consuming, high cost and difficult ship access. With the advancement of current technology, remote sensing technology using satellite imagery is believed to overcome these obstacles. In practice, there are several satellite imagery that can be used, with its own advantages and disadvantages that differ from each other. This study compared two open access  satellite imagery with different resolutions Sentinel-2A and Landsat 8 by applying Lyzenga’s algorithm to estimate depth in Matahari Terbit Beach Waters, Bali. The depth data estimated from these satellites imageries then validated with in situ measurement data collected in November 2012. To obtain the absolute depth and know the relation between the relative depth of the image and the in situ depth is carried out Inverse regression analysis. The results of the analysis using Sentinel-2A obtained an estimated absolute depth of 0 – 7.1 meters with R2 = 0.705 and RMSE 6.165324. While the analysis using Landsat 8 obtained an estimated absolute depth of 0 – 5.5 meters with R2 = 0.588 and RMSE 7.086484. The results showed that the data obtained using Sentinel-2A satellite imagery was better than Landsat 8’s imagery, which could be due to differences in image spatial resolution and water conditions when the images were recorded.