bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of magnesium sulfate on post-operative pain: A systematic review and meta-analysis
Authors: Mahmoodpoor Ata , Latifi Kaveh , Ghojazadeh Morteza , Nikbakht Mohammad Ebrahim , Hosseini Mohammad-Salar , Sarfaraz Tohid , Soleimanpour Hassan
Published: November 2024

Introduction: Magnesium sulfate is a well-known analgesic, acting by antagonizing N-methyl-D-aspartate (NMDA) receptors in the central nervous system. Methods: A systematic search of databases was conducted, 2388 articles were identified and reviewed and 34 articles containing control and intervention groups were finally entered. Terms and keywords were selected based on PICO. The titles of obtained articles were first evaluated and repetitive titles were excluded. Then, the full texts of the remaining articles were studied, and those based on inclusion and exclusion criteria were evaluated. In addition, studies investigated in terms of the risk of bias (selection, performance, reporting, attrition, etc.), and content and studies that did not have the appropriate quality for the above reasons were excluded. EndNote X7 software used for managing resources, organizing studies, and identifying repetitive cases. The extracted information from the articles was analyzed by meta-analyzing. The dissimilarity between the studies was checked by Cochran’s Q test and I2 statistics. Results: Postoperative pain is one of the major concerns of anesthesiologists, and its poor management can be associated with adverse events. The main goals of this study are to examine the effect of magnesium sulfate consumption on the first-time analgesic request after surgery, the amount of analgesic consumption after surgery, the patient’s pain score, and patient satisfaction after surgery. According to the P value (0.93), it can be concluded that the amount of pain in the first 24 hours of the two groups is not different. It can be concluded that the amount of pain in the first hour of the two groups is different (P value=0.04). The P value (0.0007) shows that the amount of analgesic request in the first 24 hours of the two groups is different. Except for one study, this study showed that magnesium sulfate made a significant improvement in terms of patient satisfaction. Overall, the use of magnesium sulfate significantly prolonged the time to request analgesics. Conclusion: Since magnesium sulfate is a cost-effective drug, without major risk and a wide reliable serum range, the effect of this drug as an adjuvant should be further investigated.
Effects of aerobic exercise and pomegranate peel extract on the gene expression of PI3K and mTOR proteins related to cardiac hypertrophy in the heart of obese female rats
Authors: Dejdar Negin , Matinhomaee Hassan , Fatolahi Hoseyn
Published: November 2024

Background. Obesity is a spreading disease that can lead to various heart diseases. Performing aerobic exercises and taking antioxidant supplements can prevent the pathological conditions of heart disease. Therefore, this research aimed to study the effect of aerobic exercise and consumption of pomegranate peel extract alone or in combination with each other on the expression of PI3K and MTOR genes related to cardiac hypertrophy in obese female rats. Methods. In this experimental study, 30 female Wistar rats with an average weight of 180 ± 20 g were randomly divided into healthy control, obese control, obese + extract, obese + exercise, and obese + exercise + extract. The aerobic training program reached 50% VO2max and 65% VO2max in the first and last weeks, respectively. The rats were fed with the pomegranate peel extract by gavage at 60 mg per kg of body weight. Results. Although there was a significant difference in the heart weight of rats in the exercise group compared to other groups (P < 0.05), no significant difference was observed in the expression of PI3K genes between the studied groups. However, the exercise intervention could significantly increase the expression of the mTOR gene in comparison with the other obese groups. Conclusion. Despite the significant increase in heart weight in the exercise group and the combination of exercise and extract, no significant change was observed in the PI3K gene expression after exercise and consumption of the pomegranate peel extract, but mTOR gene expression. After exercise intervention, there was a significant difference compared to non-exercise groups, which is probably one of the mechanisms involved in heart hypertrophy. Therefore, it seems that to obtain stronger results on the effects of both PI3K and mTOR genes, other factors such as training conditions, including duration, intensity, number of repetitions, recovery time, and conditions of subjects, should also be taken into consideration. In addition, the conditions of taking antioxidant supplements, for example, their duration or dosage, should be studied more. Practical Implications. Cardiac complications caused by obesity can probably be prevented with proper exercise and an effective dose of the pomegranate peel extract.
Toxic effects of plastic particles on cardiovascular system and angiogenesis potential: a major challenge of the current century
Authors: Rezabakhsh Aysa , Rahbarghazi Reza , Khalilzadeh Balal , Mahdipour Mahdi
Published: November 2024

Background. In recent years, plastic waste and residuals in different ecosystems have been introduced as serious challenges. Plastics with different chemical structures and derivatives are extensively applied for the packing of foods, pharmaceutical products, cosmetics, and the like. Due to distinct polymeric backbones, plastics are highly resistant to thermooxidative, irradiation degradation, and mechanical stress, resulting in inadequate recycling and accumulation in the environment. These features make plastics threatening pollutants for humans and other living organisms. Simultaneous application of plasticizers and other components during the production of plastics can increase these toxic effects. Methods. Here, the content and data related to plastic particles toxicity on cardiovascular system indexed in PubMed, Scopus, and Web of Science. Results. Data have indicated that plastic nanoparticles/microparticles induce several pathological conditions following their entry into the body via cutaneous tissue, gastrointestinal ingestion, and inhalation. Plastic particles use different mechanisms to stimulate cytotoxicity and genotoxicity in several organs. The cardiovascular system and mainly endothelial cells are in close contact with circulating plastic particles and subsequent injuries. Endothelial cell cytotoxicity induced by plastic derivatives via different molecular mechanisms was discussed in this review article. The reduction of viability (either autophagy or apoptotic death), mitochondrial injury, oxidative stress, disruption of cell-to-cell integrity, and the like are the main underlying mechanisms in the presence of plastic particles. Conclusion. These findings help us understand the vascular tissue injury induced by plastic nanoparticles and microparticles and develop preventive and therapeutic approaches. Practical Implications. Understanding the mechanisms by which plastic particles can exert toxic effects on biological systems, especially the cardiovascular system, is helpful in the prediction of related injuries and pathologies.
The relationship between attention deficits, impulsivity and emotion regulation deficits with problematic internet use: The mediating role of loneliness
Authors: Khanjani Zeynab , Bakhshipour Abbas , Hashemi Touraj , Bayrami Mansour , Naseri Elaheh
Published: November 2024

Background. Problematic internet use is one of the emerging issues in modern societies, and psychological factors play a prominent role in its etiology. Accordingly, this study aimed to investigate the relationship between attention deficit, impulsivity, and emotional regulation deficits with problematic internet use due to the feeling of loneliness. Methods. The multi-stage cluster method was adopted to select 450 students from the middle schools in Tabriz in the 2022-2023 academic year. Subjects were assessed by the questionnaires of Achenbach's behavioral signs, Barth's impulsivity, Gratz's and Roemer's emotion regulation deficits, Russell's feeling of loneliness and the problematic Internet use by Lopez-Fernandez et al. Results. The data analysis using structural equation modeling showed that the effects of attention deficit, impulsivity, and emotional regulation deficits on the problematic internet use were mediated by the feeling of loneliness. In addition, the findings revealed that attention deficit, impulsivity, emotion regulation deficit, and loneliness had a positive significant relationship with problematic internet use (P<0.05). The effects of attention deficit, impulsivity, and emotion regulation deficit on loneliness were also significant (P<0.05). Conclusion. In sum, the attention deficit, impulsivity, and emotional regulation deficits may have predicted the problematic internet use caused by feeling of loneliness. Practical Implications. These findings may have had practical implications for clinical settings, which were discussed in detail.
Atorvastatin in reducing adhesion in Flexor Tendon injury of the hand
Authors: Akbari Hossein , Ghannad Kaveh , Farasati Maryam , Mirzaei Leila , Abolfazli Mahsa , Akbari Peyman
Published: November 2024

Background. Flexor tendon repair damage to both deep and superficial flexor tendons injuries, especially in zone II, has special importance that distinguishes it from other zones. This study evaluated the effect of atorvastatin, a cheap, available, and non-cytotoxic drug, on the adhesion phenomenon resulting from tissue repair. Methods. Overall, 52 patients were included in this study. Patients were randomly divided into two groups. In the first group, atorvastatin 20 mg was administered daily for three weeks. In the control group, a placebo was used for three weeks. After 3 months, the range of motion, extension gap, extension lag, and flexion gap for each finger were measured and compared in the two groups. Results. Based on the results, using atorvastatin led to an increase in the range of motion in distal interphalangeal (DIP) injured patients. In addition, extension, flexion gap, and extension lag in both groups were the same. The rate of improvement in the range of motion in smokers was significantly lower. Conclusion. Using atorvastatin in surgical patients appears to be effective in increasing the range of motion of DIP and improving this adhesion. The negative effects of smoke on the rate of improvement that have been investigated in limited studies in this area should not be ignored either. Practical Implications. In surgery to repair the flexor tendon, using atorvastatin has really helped improve the ability to move the DIP joint. Patients are also asked to stop smoking temporarily to make their recovery go faster.
Dose-dependent long-term effects of nitrate on lipid profile in male rats
Authors: Zeinodini Ramin , Bakhtiarzadeh Fatemeh , Jeddi Sajad , Ghasemi Asghar
Published: November 2024

Background. This study aims to investigate the long-term effects of different doses of nitrate on the lipid profile in male rats. Methods. Male Wistar rats (n = 60) were assigned to 6 groups (n = 10 per group). The control group received drinking water, and 5 treatment groups received nitrate at doses of 50, 100, 150, 250, and 500 mg/L for 6 months. Nitric oxide (NO) metabolite levels (NOx) were determined at months 0 and 6. Lipid profile [cholesterol, triglyceride (TG), low-density lipoprotein cholesterol (LDL), and high-density lipoprotein cholesterol (HDL)] in the serum was measured at months 0, 3, and 6. Results. Nitrate administration for 6 months (at doses of 50, 100, 150, 250, and 500 mg/L) could increase serum NOX levels by 29.5% (P = 0.0115), 39.6% (P = 0.0002), 65.2% (P < 0.0001), 91.4% (P < 0.0001), and 181.6% (P < 0.0001), respectively. Nitrate administration for 6 months (at doses of 50, 100, and 150 mg/L) decreased serum TG [7.8% (P = 0.0508), 7.4% (P = 0.0654), and 8.3% (P = 0.0331)] and cholesterol [12.7% (P = 0.0066), 15.2% (P = 0.0009), and 15.2% (P = 0.0009)] levels. In addition, it increased serum HDL at doses of 50, 100, and 250 mg/L [24.4% (P = 0.0005), 13.9% (P= 0.0910), and 17.5% (P = 0.0172)], while it had no significant effect on serum LDL levels in comparison to the control group. Conclusion. Long-term nitrate administration at low doses (50‒150 mg/L) prevented dyslipidemia (improved lipid profile) in male rats. These beneficial effects of nitrate can be mainly due to increased serum levels of NO metabolites. Practical Implications. These findings imply that long-term nitrate administration at low doses, achieved by consuming a diet containing vegetables, can potentially be utilized to manage dyslipidemia.
PENGARUH VARIASI MASSA REFRIGERAN CHARGE R-134a PADA PROSES RETROFIT PADA SISTEM REFRIGERASI DUAL FUNCTION SEBAGAI AIR HANDLING UNIT DAN WATER CHILLER TERHADAP PERFORMANSI DAN EFISIENSI SISTEM
Authors: Zulfa Maulana
Published: November 2024

Sistem refrigerasi dual function pada Laboratorium Permesinan Fluida di Politeknik Perkapalan Negeri Surabaya merupakan sistem refrigerasi yang sesuai desain pabrikan menggunakan refrigeran R-12. Saat ini sistem refrigerasi tersebut telah dilakukan retrofit menggunakan refrigeran R-134a untuk mematuhi aturan KEPRES RI No. 23/1992 untuk mencegah terjadinya kerusakan lapisan ozon karena penggunaan R-12. Pada saat proses retrofit, masalah utama yang dihadapi adalah belum teridentifikasinya massa optimal dari refrigeran yang akan di charge kedalam sistem. Sehingga pada penelitian ini dilakukan eksperimen dengan melakukan beberapa variasi massa refrigeran yang di charge kedalam sistem tersebut. Nilai COP Ideal tertinggi bernilai 5,78 diperoleh pada mode water chiller dengan flowrate chilled water 8 l/m pada variasi massa 446,5 gram (95%). Nilai COP Aktual tertinggi bernilai 3,687 diperoleh pada mode water chiller dengan flowrate chilled water 8 l/m pada variasi massa 399,5 gram (85%). Serta nilai efisiensi isentropik tertinggi bernilai 0,7268 pada mode water chiller dengan flowrate chilled water 8 l/m pada variasi massa 399,5 gram (85%).
Suavizado de curvas para ajustar datos con estructura no lineal desde la perspectiva p-splines
Authors: Verónica Polanco Maryorys
Published: November 2024

El objetivo de este trabajo fue realizar una aproximación teórica de carácter documental, descriptivo y aplicado al enfoque de la teoría de aproximación P-splines. La metodología utilizada incluye, primeramente, una revisión documental que permitió identificar las principales características del método y los enfoques existentes; segundo, la etapa experimental que consistió en ajustar seis series de datos provenientes del estudio sobre la dinámica poblacional de Ralstonia Solanacearum en plantas de tomate mediante el software R-Project y, por último, los resultados obtenidos. Se evidenció que el parámetro  es el responsable de controlar el suavizado y en la búsqueda de un valor para este parámetro que optimice el ajuste, se puede confiar en el estimado por la función GAM, ya que proporcionó ajustes casi idénticos a los modelos con un valor de   asignado que de acuerdo a los criterios e índices considerados, fueron seleccionados como modelo final.
Роль цифрових технологій у житті населення
Authors: Вербовський Ігор
Published: November 2024

Актуальність дослідження полягає у всебічному аналізі впливу цифрових технологій на різні аспекти життя та необхідності адаптації до нових умов. Оскільки цифрові технології все більше інтегруються в повсякденне життя, їхній вплив поширюється на комунікацію, працевлаштування, охорону здоров’я та дозвілля. Стрімкий процес цифровізації відкриває нові можливості для розвитку, освіти та економічного зростання, водночас створюючи такі виклики, як цифрова нерівність, загрози конфіденційності даних та зміни на ринку праці. Важливий внесок в інтеграцію цифрових технологій у повсякденне життя громадян мала програма «Цифрова Польща», яка дозволила зробити значні кроки до досягнення цифрової трансформації, що відповідає сучасним вимогам та викликам глобалізації
Мета дослідження ‒ визначити як позитивні, так і негативні наслідки цифровізації та розробити рекомендації для подолання викликів. Методи дослідження: аналіз літератури, опитування і статистичний аналіз даних. Результати показали, що цифрові технології створюють нові можливості для розвитку й освіти, але водночас поглиблюють нерівність і спричиняють нові загрози. У висновках указано про необхідність розробки програм для подолання цифрової нерівності та забезпечення рівного доступу до технологій. Ефективні освітні програми та навчальні ініціативи мають важливе значення для забезпечення робочої сили необхідними навичками для процвітання в умовах цифрової економіки. Крім того, необхідно встановити етичні стандарти й правила для захисту конфіденційності даних і боротьби з дезінформацією. Перспективи подальших досліджень уміщують вивчення ефективних підходів до освіти й етичних аспектів цифровізації. Важливо також вивчити етичні наслідки використання цифрових технологій, зокрема й  питання конфіденційності даних і запобігання дезінформації. Також слід розробити стратегії для пом’якшення негативного впливу цифрових технологій на здоров’я, наприклад, ергономічні проблеми, пов’язані з віддаленою роботою і надмірним використанням цифрових пристроїв.
Художнє Осмислення соціальних катастроф ХХ століття в польській драмі абсурду(С. Мрожек «Танго», В. Ґомбрович «Оперета»)
Authors: Білявська Вікторія
Published: November 2024

У статті на прикладі драм «Танго» С. Мрожка та «Оперета» В. Ґомбровича проаналізовано художнє осмислення соціальних катастроф ХХ століття, серед яких війни, революційні перетворення, установлення диктатури тощо в польській драмі абсурду. Звернено увагу на те, що польські драматурги гостро відчули прагнення тогочасної людини віднайти нові орієнтири та шляхи подальшого розвитку. У В. Ґомбровича герої знаходяться в пошуку нових форм існування, намагаючись передбачити тенденції розвитку, проте їхнє надмірне захоплення призводить до катастрофи, якою стала революція. С. Мрожек демонструє, до яких трагічних наслідків може призвести небажання окремих індивідів брати на себе відповідальність за розвиток суспільства загалом, конформізм та пасивність більшості в ситуації соціального вакууму, який влада намагається заповнити новими ідеями, заснованими на терорі та диктатурі. В «Опереті» В. Ґомбровича хронологічні межі чітко окреслені, що дозволяє провести виразні паралелі. У центрі уваги митця – людина, її алегоричні костюми і маски, ролі, які доводиться грати, а лейтмотивом є протиставлення «костюм – нагота». Апофеозом пошуку нової форми має стати бал-дефіле, де маестро Фіор повинен представити на широкий загал свої творіння і тим самим спроєктувати картину світлого майбутнього. Автор, виходячи на рівень всеохопного універсалізму, майстерно конструює ситуацію, у якій опинилося розгублене людство, що, з одного боку відчуває страх перед всепоглинаючою формою, а з іншого – боїться її втратити. С. Мрожек у драмі «Танго» на прикладі окремо взятої родини, яка уособлює суспільство, досліджує основні механізми, під впливом яких людина здатна або перетворитися на один з багатьох елементів тоталітарної системи, або ж її очолити. Перед нами багатозначні соціальні метафори, які дозволяють складні суспільно-історичні проблеми помістити в абсурдистські кліше.
Learning literacy. Why adults learn differently and how media matter
Authors: Dinkelaker Jörg
Published: November 2024

Der Beitrag untersucht die Bedeutung eines spezifischen, aus der Pädagogik der Aufklärung stammenden Erwachsenen-Ideals für Erwachsenenbildung und Bildungsmedien: des Ideals des selbstständigen, medienbasierten Lernens im Erwachsenenalter. Ausgehend von einer historischen Betrachtung der Formierung dieses Ideals gegen Ende des 18. Jahrhunderts wird Erwachsenenbildung als eine Praxis des Umgangs mit dem Umstand interpretiert, dass die in der Welt lebenden realen Erwachsenen an diesem Ideal gemessen werden, ohne dass sie ihm jemals vollständig entsprechen könnten. Ausgehend von dieser Deutung werden vier in der Gegenwart bedeutsame Varianten von Erwachsenenbildung und entsprechend vier Arten von Bildungsmedien für Erwachsene beschrieben. (DIPF/Orig.)
Das illustrierte Flugblatt als Bildungsmedium der Frühen Neuzeit. Über Zeigestrategien und didaktische Vermittlungsweisen eines multimodalen populären Druckwerks
Authors: Heesen Kerstin te
Published: November 2024

Die Autorin untersucht „Das illustrierte Flugblatt als Bildungsmedium der Frühen Neuzeit“. Sie zeigt an diesem in der damaligen Zeit sehr populären didaktischen Medium unterschiedliche visuelle und textliche Zeigestrategien und Vermittlungsweisen auf und unterstreicht die Bedeutung dieses für die Bildungsmedienforschung sehr instruktiven Forschungsgegenstands – sowohl mit Blick auf das Erkennen typischer Strukturmerkmale von Bildungsmedien generell als auch hinsichtlich der Aussagekraft dieses konkreten Mediums über soziokulturelle Verhältnisse und Wissensbestände der Frühen Neuzeit. (DIPF/Orig.)
Der neue "Holländische Katechismus für Erwachsene" von 1966. Religiöse Erwachsenenbildung zwischen Mündigkeit und kirchlicher Autorität
Authors: Wiater Werner
Published: November 2024

Der Autor diskutiert die Frage, worin die Kernaufgabe religiöser Erwachsenenbildung in katholischen Bildungseinrichtungen liegt. In diesen stößt das Anliegen der Kirche, dogmatisch abgesichertes Wissen über Glaubensinhalte zu vermitteln, auf das Bedürfnis des Menschen, sich frei über Glaubensfragen informieren und sich selbstbestimmt eine Meinung bilden zu können. Der nach dem Zweiten Vatikanischen Konzil (1962–1965) veröffentlichte niederländische Katechismus für Erwachsene versucht, diesem Bedürfnis zu entsprechen, wurde und wird aber von der offiziellen Kirche sehr kritisch aufgenommen, wie der Verfasser zeigt. (DIPF/Orig.)
Sammlungsobjekte in der universitären Lehre
Authors: Bers Christiana
Published: November 2024

Die Autorin bezieht Lehrmodelle im eigentlichen Sinne ebenso ein wie Sammlungsobjekte, die eigens für die Hochschullehre angeschafft wurden und durch den didaktisierten Einsatz die Funktion von Bildungsmedien erhalten. Sie konzentriert sich auf die didaktische Bedeutung solcher Sammlungsobjekte für das forschende Lernen. Interviews mit Lehrenden und Studierenden lassen deutlich werden, dass die Transformation der Objekte zu Bildungszwecken große Chancen in sich birgt, dass sie aber kein Selbstläufer ist. (DIPF/Orig.)
The current problems and solutions of applying multimedia technology in adult students' Business English teaching
Authors: Cimaszewska-Kuniniec Gracja
Published: November 2024

Der Einsatz von Multimedia im Alltag und im Berufsleben ist bei Erwachsenen mittlerweile sehr beliebt. Es ist daher nicht verwunderlich, dass die Technologie auch zunehmend im Sprachunterricht eingesetzt wird. Welche Rolle spielt der*die Lehrer*in beim hybriden Lernen? Erleichtern oder erschweren die technologischen Verbesserungen im Bildungswesen das Leben der Lernenden? Werden Bildungsmedien in der Erwachsenenbildung umfassend genutzt? Anstelle von Stift und Papier verwenden die Lernenden heute verschiedene Software und Tools, um Präsentationen und Projekte zu erstellen. Die neuen Methoden tragen dazu bei, das Forschungsinteresse zu steigern. Dieser Artikel konzentriert sich auf die Notwendigkeit digitaler Technologien in der Bildung und erörtert ihre wichtigsten Anwendungen und die damit verbundenen Herausforderungen im Bildungsbereich. Die Frage, ob dies der richtige Weg für den Unterrichtsprozess ist, muss beantwortet werden. Daher hat die Autorin eine Gruppe von mehr als 200 erwachsenen Studierenden des Wirtschaftsenglisch auf B1/B2-Niveau zu diesem Thema befragt. Die Umfrage bezog sich auf Probleme im Fernunterricht, Schwierigkeiten bei der Verwendung von Multimedia-Werkzeugen, Hauptanwendungen und Herausforderungen in diesem Bereich. Außerdem hat sie eine Fragebogenerhebung und Interviews mit Dozierenden durchgeführt, um ihre Einstellung zu Multimedia, die Häufigkeit des Einsatzes von Multimedia und ihren Bedarf an Fortbildung in diesem Bereich zu ermitteln. Der Beitrag präsentiert die Ergebnisse und diskutiert mögliche Konsequenzen. (DIPF/Orig.)
Online language learning platforms and applications. Users' opinions
Authors: Stanulewicz Danuta , Radomyski Konrad
Published: November 2024

Sprachlern-Plattformen und Sprachlern-Apps sind in letzter Zeit bei erwachsenen Lernenden, die sich aus verschiedenen Gründen für die Online-Bildung entscheiden, sehr beliebt geworden. Die Plattformen bieten Kurse in Sprachen an, die in der internationalen Kommunikation verwendet werden, aber auch in weniger bekannten Sprachen, sowohl natürlichen als auch künstlichen. Mithilfe der Plattform Duolingo zum Beispiel kann man unter anderem Englisch, Spanisch, Französisch, Walisisch, Navajo, Haitianisches Kreolisch, Esperanto, Klingonisch und Hochvalyrisch lernen. Sie wird von über 500 Millionen Lernenden genutzt, die in verschiedenen Regionen unseres Planeten leben. In diesem Beitrag konzentrieren sich die Autor*innen auf die Meinungen der Nutzer von drei beliebten Sprachlern-Plattformen im Google Play Store: Duolingo, Busuu und Memrise. Zum einen werden die Plattformen auf einer Skala von 1 bis 5 bewertet, zum anderen mit einem kurzen Kommentar versehen. Die Länge solcher Rezensionen variiert in der Regel zwischen einem Wort (z.B. gut oder fantastisch) und einem bis zu zehn häufig kurzen Sätzen. Einige Kommentare sind aus diesem Grund sehr allgemein, andere enthalten hingegen sowohl Vor- als auch Nachteile einer bestimmten Lernplattform und in manchen wird Bezug nur auf konkrete Sprache(n) und nicht auf die Plattform als solche genommen. Die Autor*innen haben – nach dem Zufallsprinzip – ca. 25.000 Meinungen aus dem Google Play Store über jede dieser Plattformen extrahiert, die von ihren Nutzern im Zeitraum von 2011 bis 2022 abgegeben wurden. Mithilfe von AntConc, einem von Lawrence Anthony entwickelten Programm, haben sie einen Korpus der Meinungen zusammengestellt. Die Korpustools ermöglichen es ihnen, positive, neutrale und negative Meinungen zu identifizieren, was ihre Stimmungsanalyse erleichtert. (DIPF/Orig.)
Legislación laboral
Authors: Pino-Cordero Darwin , Jilaja-Carita Miriam , Gonzales-Paco Magali
Published: November 2024

El libro de legislación laboral proporciona un análisis exhaustivo sobre el marco normativo que regula las relaciones laborales, los derechos de los trabajadores y las obligaciones de los empleadores. Su estructura cubre desde conceptos básicos hasta aspectos específicos de la legislación laboral vigente, ofreciendo también casos prácticos y jurisprudencia relevante para profundizar la comprensión de estos temas.
Adaptive human–machine theorem proving system
Authors: Joudakizadeh M. , Beltiukov A.P.
Published: November 2024

This paper presents a novel approach to constructing human–machine theorem proving systems. These systems integrate machine learning capabilities, human expert knowledge, and rigorous logical control for the effective construction and verification of proofs. The innovation of this approach lies in its openness: the user is given a tool for building such systems. Users can create theorem proving systems by selecting existing logical inference strategies or adding new ones in accordance with the provided interfaces or relationship agreements. The systems being built have a significant human--machine adaptive nature. During their operation, a meta-strategy is developed and trained based on the foundational elements of the existing strategies. The system is designed as a universal framework for managing various strategies, with the provision of a basic architecture and a library of strategies with the possibility of adding new ones. During the learning process, a system of structural characteristics is also accumulated and trained, on the basis of which a decision is made on the use of specific strategy elements at the next step. The presentation is conducted for the sequential calculus of minimal positive predicate logic as the most suitable for the deductive synthesis of programs and algorithms, for which it is proposed to use this approach.
Control problem for a parabolic system with disturbances and possible changes in dynamics
Authors: Izmest'ev I.V. , Livanov N.D.
Published: November 2024

The problem of control of a parabolic system, which describes the heating of a given number of non-uniform rods, is considered. The control is point heat sources, which are located at the ends of the rods. Some boundary conditions are affected by uncontrolled disturbances. The density functions of the internal heat sources of the rods are not exactly known, but the segments of their change are given. We admit that at some moments of time, changes may occur in the equations describing the dynamics of the controlled system. These moments of time are not known in advance. The goal of choosing the control is to ensure that at a fixed moment of time, the weighted sum of the average temperatures of the rods belongs to a given segment for any admissible realizations of disturbances, unknown functions and moments of change in the dynamics. After the change of variables, this problem is reduced to a one-dimensional control problem with disturbance. Necessary and sufficient termination conditions are found.
On exact observability of a nonlinear evolutionary equation with a bounded right-hand side operator on a small interval
Authors: Chernov A.V.
Published: November 2024

For the Cauchy problem associated with a nonlinear ordinary differential equation in a Hilbert space $X$, we obtain sufficient conditions for exact observability on a small interval. By means of the condition of boundedness from below by a positive constant on the unit sphere with respect to a linear observer (observation operator) and with the help of Minty–Browder's theorem, the observability problem is reformulated as an operator (integral) equation with the right-hand side involving (in addition to the Volterra-type term, which is “local” in time) a nonlocal term as well. The unique solvability of the obtained operator equation (the equation of state reconstruction from observation) is proved with the help of the contraction map principle and the hypothesis about smallness of the observation interval. Moreover, we prove two theorems on global reconstruction of a state: 1) from observation on a small interval and under the condition of global solvability of some majorant integral equation in the space $\mathbb{R}$; 2) from a series of observations on small intervals in the presence of a priori information on the belonging of the state values to a bounded ball in $X$. As an example (of an independent interest), a semilinear equation of the global electric circuit in the Earth's atmosphere is considered.
Control of a nonlinear system along a trajectory under disturbance conditions
Authors: Shchelchkov K.A.
Published: November 2024

We consider two control problems along a given trajectory with a disturbance, which is the second player in a differential game. The dynamics of the first problem are described by a nonlinear system of first-order differential equations, and the dynamics of the second problem are described by a nonlinear system of second-order differential equations. Control is performed by means of a piecewise constant controller, the set of values of which is finite. The goal of control is to move as close as possible to a finite trajectory under any disturbance action. In the first problem, the trajectory is determined by the solution of an auxiliary system with simple motion. In the second problem, the trajectory is determined by the solution of an auxiliary controlled system of second-order differential equations. In the first problem, it is shown that, for any neighborhood of the specified trajectory, there exists a piecewise constant pursuer control that guarantees motion in this neighborhood under any disturbance actions, from the initial point of the trajectory to the neighborhood of the final point of the trajectory. In the second problem, the motion is also ensured as close as possible to an arbitrary finite trajectory of the auxiliary system, both the phase trajectory of the original system and the velocity trajectory. Hence, in the second problem, we prove soft capture, in which, in addition to bringing the phase coordinates to any pre-defined neighborhood of zero, the velocity is also brought to the same pre-defined neighborhood of zero.
Transformações Geométricas no plano: uma abordagem híbrida das metodologias Rotação por Estações e Gamificação para o Ensino Fundamental
Authors: Amaral Paulo Victor da Silveira , Barbosa Nelson Machado
Published: November 2024

This research presents an innovative didactic approach, combining the opportunities provided by the Gamification methodology with Hybrid Teaching, more specifically in the category of Rotation by Station. The central objective is to promote a more effective understanding of the concept of geometric transformation, and, by doing that, improve the teaching of this content in the final years of Elementary School. The relevance of incorporating playful activities into the learning process is highlighted, which, far from compromising traditional methods, adds significant value to the teaching process. The research aims to streamline the educational process, stimulating student autonomy and encouraging them to take responsibility for their own learning. To achieve these objectives, a didactic sequence was developed and implemented in a 7th year Elementary School class at Centro Educacional Araújo, located in São Pedro da Aldeia/RJ. Adopting a qualitative approach of the pedagogical intervention type, data collection involved the observations of researchers, the analysis of recording activities and the application of a self-assessment questionnaire. Upon concluding the research, it was found that the methodologies employed not only promoted the desired engagement, but also resulted in significant effects on the learning process. Thus, we believe that the proposed set of activities can contribute positively to the teaching practice of other professionals and teachers interested in its application, whether fully or partially.
Thermopower modulation analyses of effective channel thickness for Zn-incorporated In2O3-based thin-film transistors
Authors: Wu Yuzhang , Ghediya Prashant R. , Zhang Yuqiao , Matsuo Yasutaka , Ohta Hiromichi , Magari Yusaku
Published: November 2024

Zn-incorporated In2O3 (IZO) thin-film transistors (TFTs) show high field-effect mobility (μ
FE ∼40 cm2 V−1 s−1) when the IZO channel is amorphous, whereas a lower μ
FE (∼10 cm2 V−1 s−1) is observed with a polycrystalline channel. The reasons behind this difference in μ
FE remain unclear despite various studies on IZO TFTs. Here, we perform electric field thermopower modulation analysis on amorphous and polycrystalline IZO TFTs to measure the change in effective thickness. For the amorphous channel, the effective thickness was zero when the effective gate voltage (V
g−V
th; V
g is the gate voltage and V
th is the threshold voltage) was zero. Furthermore, it gradually increased with V
g−V
th up to 1.6 nm, reflecting that conduction band bending occurred. By contrast, the polycrystalline channel showed an initial effective thickness of 5 nm (≈film thickness of IZO) and sharply decreased to ∼1.7 nm. In amorphous channels, electron transport followed field-effect theory, while factors like grain boundaries limited transport in polycrystalline channels.
Effect of adding ionic liquid into polydimethylsiloxane on the output performance of triboelectric nanogenerator
Authors: Zhou Qingyang , Zheng Yumeng , Kinoshita Kentaro , Ikuno Takashi
Published: November 2024

Adding 1-butyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide (BMIM-TFSI), an ionic liquid, to polydimethylsiloxane (PDMS) films significantly enhances the output of triboelectric nanogenerators (TENGs). In a TENG using contact and separation between the composite film and an aluminum (Al) plate, incorporating 0.1 vol% of BMIM-TFSI more than doubled the output voltage achieved compared to a pure PDMS film. To understand the cause of this improvement, composition analysis around the surface of the composite polymer film was conducted before and after tapping. We found that BMIM-TFSI molecules segregated around the surface after tapping. It is considered that the polarization of the BMIM-TFSI molecules enhances the output performance of TENGs by superimposing on the surface charges generated at the PDMS/Al interface.
Vacuum frequency measurement of 7S3-7P4 transition in Cr atoms using laser-induced fluorescence
Authors: Zhou Tong , Deng Xiao , Yin Zhijun , Xiao Guangxu , Shen Junyu , Sun Lei , Ren Fangsheng , Xue Dongbai , Xie Yuying , Yu Jing , Kong Ming , Wang Jianbo , Yin Cong , Cheng Xinbin , Li Tongbao
Published: November 2024

The nanometric length traceability chain is the foundation of cutting-edge research at the nanoscale. The current traceability chain has limitations in its applications. However, the application performance of the nanometric traceability chain based on the 7S3-7P4 transition in chromium atoms has been fully validated. Addressing the issue that the 7S3-7P4 transition frequency at the traceability side of this chain has not been measured in a vacuum environment, this study used the fluorescence symmetry method under vacuum conditions to measure the 7S3-7P4 transition frequency, obtaining the corresponding vacuum wavelength of 425.5533474 nm and the vacuum wave number of 23498.81645 cm−1.
PENGARUH FLASH SALE DAN TAGLINE GRATIS ONGKIR SHOPEE TERHADAP PEMBELIAN IMFULSIF DI BENGKULU
Authors: Oki Syahputra  , Zelin Wahyuni  , Meilaty Finthariasari
Published: November 2024

Research was conducted on Shopee Marketplace users in Bengkulu City. The aim of this research is to find out the influence of flash sales and free shipping taglines on impulse purchases on the Shopee marketplace in Bengkulu City, both partially and simultaneously. Sampling in this research used a purposive sampling method and used 110 respondents as research samples. The types of data used are primary and secondary data. Primary data is obtained through distributing questionnaires directly to respondents, and secondary data sources support information from primary data, such as literature studies, previous researchers, and data obtained via the internet (online). The data analysis techniques used are research instrument tests, classical assumption tests, multiple linear regression analysis, determinant coefficient tests (R2)) and hypothesis tests, namely the t test and f test. The research results show that flash sales and free shipping taglines influence impulse purchases. The R Square value was obtained at 0.210 , or equal to 21.0% , which shows that the flash sale and free shipping tagline can explain and provide the information needed to predict the impulse buying variable of 21.0%. Meanwhile, the remaining 79.0% was influenced by other variables not examined in the research.
Kata Kunci : Flash Sale, Tagline Gratis Ongkir, Pembelian Impulsif.
PENGARUH PRESTASI KERJA DAN KOMPETENSI KARYAWAN TERHADAP PROMOSI JABATAN PADA PT AGUNG AUTOMALL TOYOTA BENGKULU
Authors: Nadiyen Elsa , Meiffa Herfianti
Published: November 2024

Work performance is the main key to a company's success in achieving its goals. A company needs employees who have the right work performance and employee competencies to achieve the desired promotion. This research aims to determine the influence of work performance and employee competency on position promotion at PT Agung Automall Toyota Bengkulu. This research uses quantitative methods and the object of this research is employees of PT Agung Automall Toyota Bengkulu, a sample of 130 respondents. The data collection technique uses a questionnaire. The analysis technique used is multiple linear regression. This research uses validity tests, reality tests, classical assumption tests followed by hypothesis testing.
Based on the results of multiple linear regression analysis, the regression equation Y 2.036 0.463 (X1) + 0.713 (X2) is obtained. The research results and hypothesis show that Job Performance (sig α = 0.000 < 0.050), Employee Competence (sig α = 0.002 < 0.050). From the results of the hypothesis test, it shows that there is a simultaneous influence of Job Performance and Employee Competency on Job Promotion and shows that there is a significant influence of Job Performance and Employee Competency partially on Job Promotion.
PENGARUH GAYA KEPEMIMPINAN, MOTIVASI DAN DISIPLIN KERJA TERHADAP KINERJA KARYAWAN (STUDI KASUS PADA KARYAWAN PROMOTOR BRAND REXI ACCESSORIS DI KOTA BENGKULU)
Authors: Gunandra Davin , Meilaty Finthariasari
Published: November 2024

This study aims to determine the effect of leadership style, motivation and work discipline on the performance of Brand Rexi promoter employees in Bengkulu. Respondents of this study were employees of Brand Rexi promoters in Bengkulu totaling 36 employees. The sampling technique used in this study was accidental sampling. Data analysis techniques using multiple linear regression analysis, coefficient of determination and hypothesis testing. Based on the results of research on leadership style, motivation and work discipline simultaneously or together have a significant effect on the performance of employees of the Rexi Brand promoter in Bengkulu City with a probability value (sig) of 0.000 <0.05. As well as the leadership style variable with a probability value (sig) of 0.034 <0.050 has a significant effect on employee performance. Motivation with a probability value (sig) of 0.008 <0.05 has a significant effect on employee performance. And work discipline with a probability value (sig) of 0.000 <0.05 has a significant effect on employee performance.
Integrated coast-inland models in Liguria: ecosystem services between plans, policies and innovation
Authors: Tucci Giorgia , Lombardini Giampiero , Pilogallo Angela
Published: November 2024

The following study focuses on the relationship between the coast and the inland within the context of the Liguria region with the aim of formulating a representation based on integrated physical-spatial models capable of providing possible answers to the territory's urban-social and ecosystem problems. The research identifies two regional contexts of analysis - one in the east and one in the west - that are representative of the critical and fragile phenomena of the entire region, of which it analyses and restores at a spatial level the ecosystem qualities and the degree of innovation that the territory is capable of producing, in order to understand to what extent strategic planning and the investments that recent governance policies generate, reflect on the territorial ecosystem in terms of environmental quality, economic-productive development, socio-cultural dimension and political-technological innovation.
The potential of different NBS policies to provide water flow regulation: a scenario-based assessment based on SWMM
Authors: Benedini Andrea
Published: November 2024

Pluvial flooding is a growing concern in cities, exacerbated by climate change and rapid urbanisation. To address this issue, contemporary flood risk management focuses on urban resilience and the role of Nature-Based Solutions (NBS) in providing Water Flow Regulation (WFR). Using the Storm Water Management Model, this study explores the effectiveness of different NBS policies in a densely built municipality, Cormano (Italy). The research identifies green roofs and permeable pavements as key NBS options and assesses their performance under various rainfall conditions. Six policy scenarios are examined, ranging from 'direct' public policies, where the government directly implements NBS, to ‘enabling’ policies incentivising private stakeholders to adopt NBS. Results indicate that the ‘enabling’ policy yields the most significant WFR improvements in the case study. The study underscores the need for multifaceted, integrated, performance based NBS strategies. It emphasises the importance of ‘enabling’ policy instruments, such as regulations and incentives, in promoting NBS adoption.
Reception through Mobile Commons. Disrupting Exclusion and Negotiating Solidarity Politics through Brussels’ Squats
Authors: Oubad Ismail
Published: November 2024

This study investigates the complex dynamics of squatting in Brussels, examining its influence on shaping solidarity norms and practices in urban settings. Through activist-ethnography conducted within squats, we identify a recurring pattern: the (re)production and negotiation of mobile commons. Analyzing three squatting instances, we emphasize their role as not only spaces for commons (re)production but also platforms for migrants’ and activists’ social becoming. We argue that squats are not mere shelters but dynamic spaces where negotiation and social transformation occur, challenging conventional humanitarian assistance models. Ultimately, this research highlights the significance of (re)producing alternative dwelling infrastructures for illegalized migrants in shaping the urban commons and thereby impacting everyday urban politics of solidarity.
Costruire un’infrastruttura di cura. Il ruolo del progetto nel ripensare pratiche di comunità e spazi collettivi: il caso del Collectif Etc.
Authors: Lanteri Silvia , Montanaro Giulia , Spinelli Martina , Vassallo Ianira
Published: November 2024

This paper is part of a broader debate on the role of urban and architectural project within the growing attention towards processes of spatial regeneration in marginal areas, which places practices of care and spatial re-signification at the center as an element of collective action outside of neoliberal dictates. Starting from the empirical observation of the 'failed' project La Places des Possibles, in France - with the Collectif Etc1 involved, intertwining design experience and the redefinition of a collective identity - it is possible to deduce some more general elements of reflection regarding the role of the designer and of the space within the commoning processes. How is design practice redefined within actions that focus on a different way of doing things, different from the productivist model where urban design has been placed in recent decades? What is the role of space as a medium of negotiation within a collective process that evolves with slow and uncertain times and modes?
I centri antiviolenza come pratica di urban commoning. Riflessioni ed esperienze nel contesto italiano e romano
Authors: Antonucci Maria Cristina , Demurtas Pietro , Proia Francesca
Published: November 2024

The aim of this paper is to reflect on the theme of urban commons and, in particular, to propose an interpretation of the experience of Italian anti-violence centres in this context. The first part of the paper is dedicated to the theoretical contextualisation of the urban commons. A second part reconstructs the emergence of anti-violence centres in Italy and their evolution over time. The third part is dedicated to the Roman experience of the Lucha y Siesta House, which explicitly declares itself to be a common good managed and shared. In the background and in the conclusions, the tension between the specific identity of the Cav and Women’s Houses and the relationship with the institutions remains, also taking into account the two models of shared management used in our country to care for and manage common goods.
Tracking the social capital generated by the commons. A proposed theoretical framework for moving towards a caring city
Authors: Perreault Marie-Anne
Published: November 2024

To develop a caring ethic, cities need to engage with citizens to enhance the ways they live together. Commons are valuable allies for city governments in creating social capital that feeds common sense of belonging. They have a ricochet effect throughout the population. This relationship between the commons and their environment helps to create linking-type relationships (Putnam, 2000) with the city. By adding the ricochet effect to the forms of social capital developed by Putnam, this article proposes an analytical framework to explain how commons can shape our cities into caring cities. The proposal’s effectiveness is illustrated by two initiatives run by the Solon Collective in the Ahuntsic-Cartierville district of Montreal (Canada): LocoMotion and citizens protrusions.