University Supervisors' Expectations for Cooperating Teachers during a TVET Practical Traineeship in the Field of Physical Education

Expectations based on reflective research create a mentoring environment in which instructors and university directors can reflect on pre-service issues, thereby increasing the understanding of mentors and reducing student stress, particularly in physical education universities that offer technical and vocational education and training (TVET). Therefore, this study aimed to describe the expectations of university supervisors of cooperating teachers, as the main actors in the practical teaching traineeship in the field of physical education teaching. In this essence, data collection was carried out with 148 university supervisors that took an integral part in the studies. The information of the survey technique revolved around the following issue: "What are your expectations during a practical training period of the cooperating teachers? ». It has been achieved that cooperating teachers were concentrated on being seen as colleagues that share experiences with their trainees and understand the merits of the profession, leaders who act as professional in supervision methods and creative in finding solutions, guides in choosing the appropriate strategies and in filling the gaps of the lessons, good listeners and tolerant in offending behaviors whether toward them or other trainees

Combination of air stripping and biological processes for landfill leachate treatment

Landfill waste decomposition generates a dark effluent named, leachate which is characterized by high organic matter content. To minimize these polluting effects, it becomes necessary to develop an effective landfill leachate treatment process. The objective of this study was to evaluate the performance of an innovative approach based on air stripping, anaerobic digestion (AD) and aerobic activated sludge treatment. A reduction of 80% of ammonia and an increase of carbon to nitrogen ratio to 25 were obtained, which is a suitable ratio for AD. This latter AD was performed in fixed bed reactor with progressive loading rate that reached 2 and 3.2 g COD/L/d for the raw and diluted leachate (1:2), respectively. The anaerobic treatment led to significant removal of chemical oxygen demand (COD) and biogas production, especially for the diluted leachate. The COD removal was of 78% for the raw leachate and a biogas production of 4 L/d with 70% methane content. The use of the diluted leachate led to 81% of COD removal and 7 L/d biogas with 75% methane content. It allowed a removal of 77% COD and more than 97% of the organic compounds present in the initial leachate sampl

Adaptation of the Questionnaire on Teacher Interaction in Tunisia: Teaching Strategies to Promote Sustainable Education in Schools

none7siThe objective of the study was the translation and adaptation into Arabic language of the Questionnaire on Teacher Interaction and the examination of psychometric properties among students in Tunisia. A set of students (N = 778) were recruited to complete a translated, Arabic version of the Teacher Interaction Questionnaire (AQTI). The subjects represented both female and male with an average age of 15.98 ± 2.17 years. The subjects were divided into exploratory (N = 226) and confirmatory (N = 552) samples. For the exploratory sample, the female sex represented 46.90% and the male 53.10% (N = 120). Likewise, the confirmatory sample consisted of females (48.01%) and males (51.99%). The scale designed in Arabic AQTI presented eight components for exploratory factor analysis. The result was a first factorial solution, which kept these eight components of the predetermined instrument. The confirmatory factor analysis provided good fit indices. Similar results for instrument reliability were confirmed for all dimensions, through good Cronbach’s coefficient, which were superior to 0.80. The Arabic version of AQTI is valid and reliable and can be administered to assess teacher/student interactions in Tunisia. However, further research needs to examine the construct validity of the instrument.openSamia Boukari; Noomen Guelmami; Sabri Gaied Chotrane; Sami Bouzid; Aymen Khemiri; Antonella Muscella; Riadh KhalifaBoukari, Samia; Guelmami, Noomen; Gaied Chotrane, Sabri; Bouzid, Sami; Khemiri, Aymen; Muscella, Antonella; Khalifa, Riad

A year of genomic surveillance reveals how the SARS-CoV-2 pandemic unfolded in Africa.

The progression of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic in Africa has so far been heterogeneous, and the full impact is not yet well understood. In this study, we describe the genomic epidemiology using a dataset of 8746 genomes from 33 African countries and two overseas territories. We show that the epidemics in most countries were initiated by importations predominantly from Europe, which diminished after the early introduction of international travel restrictions. As the pandemic progressed, ongoing transmission in many countries and increasing mobility led to the emergence and spread within the continent of many variants of concern and interest, such as B.1.351, B.1.525, A.23.1, and C.1.1. Although distorted by low sampling numbers and blind spots, the findings highlight that Africa must not be left behind in the global pandemic response, otherwise it could become a source for new variants

What Physical Education Trainees Think about Teaching Profession and Mentoring during a TVET Practical Traineeship?

The attitude of futures teachers of physical education and mentorship, are two mainvariables that may affect the number of student teachers being part of the profession, particularly in physical education universities that offer technical and vocational education and training (TVET).Therefore, the purpose of this study is to investigate attitudes of pre-service teachers toward the physical education teaching profession. In addition, this research attempts to understand whether the relationship between mentors and students affects the transfer of learning from the university during a practical teaching internship.This is a quantitative study using a questionnaire to examine attitudes towards the teaching profession and understand the views on mentoring of 169 physical education students in Tunisia to illustrate the importance of professional mentoring work.A descriptive statistics including means and standard deviations were used to describe each item and the mean of all items for each scale. In this context, SPSS (Statistical Package for Social Sciences) 16.0 software was applied.It was revealed that student teachers' answers were significantly higher while taking into consideration both of university teaching methods and of advice of university supervisor. These findings pave the way for integral implications: a greater transition from university learning to practice, producing future teachers who are ready to integrate and implementing university practices in a new context

Real-Time Digital Twin of a Wound Rotor Induction Machine Based on Finite Element Method

Monitoring and early fault prediction of large electrical machines is important to maintain a sustainable and safe power system. With the ever-increasing computational power of modern processors, real-time simulation based monitoring of electrical machines is becoming a topic of interest. This work describes the development of a real-time digital twin (RTDT) of a wound rotor induction machine (WRIM) using a precomputed finite element model fed with online measurements. It computes accurate outputs in real-time of electromagnetic quantities otherwise difficult to measure such as local magnetic flux, current in bars and torque. In addition, it considers space harmonics, magnetic imbalance and fault conditions. The development process of the RTDT is described thoroughly and outputs are compared in real-time to measurements taken from the actual machine in rotation. Results show that they are accurate with harmonic content respected

Evaluation of influence of coagulation/flocculation and Fenton oxidation with iron on landfill leachate treatment

Landfill leachates (LFL) collected from Sfax (Tunisia) discharge area are characterized by high chemical oxygen demand (COD), ammonium and salts contents. They constitute a source of phytotoxicity and pollution for ground water and surface water resources which requires an adequate treatment process. To evaluate the efficiency of the coagulation/flocculation treatment, special attention was paid to the effect of pH, coagulant and flocculant doses. Then, effect of zero valent iron was also studied alone and in combination with coagulation/flocculation pretreatment. Our results indicate high removal efficiencies by coagulation/flocculation (46% COD and 63% turbidity) and Fenton process (48% COD and 76% turbidity). The combined application of coagulation/flocculation and Fenton revealed higher COD removal (62%) and turbidity reduction (90%). These results showed the applicability of this combined treatment method for the degradation of organic compounds and reduction of the treated leachate toxicity

5G network slicing with unmanned aerial vehicles: Taxonomy, survey, and future directions

Abstract With the ever‐expanding rise of network demands and user expectations, the fifth generation (5G) of cellular networks was envisioned to support a plethora of use cases and conflicting user demands. Next to providing traditional connectivity like its previous generations, 5G also promises to be a heterogeneous network connecting humans, vehicles, unmanned aerial vehicles (UAVs), smart devices, and more. These challenging expectations proved to be overwhelming for traditional network infrastructures to handle. Network slicing has emerged as a promising solution that can achieve such diverse, taxing, and sometimes conflicting requirements in a dynamic and programmable way. There is no denying that UAVs have attained significant focus and research in recent years, and with 5G already being deployed, UAVs can now exploit the capabilities of the new networks. Extensive research is being taken to integrate UAVs into networks, assisting and improving aspects like latency, coverage, and capacity. Motivated by these facts, this survey distinguishes itself from other works by jointly exploring 5G, network slicing, and UAVs. The main contributions of this article are to showcase how UAVs can assist networks, provide a taxonomy of UAVs in the context of network slicing, and survey works that contribute to network slicing with UAVs. In this article, we present a comprehensive survey on UAVs in the context of network slicing, covering contributions, and state‐of‐the‐art literature. We discuss network slicing in‐depth, focusing especially on the three major slices: enhanced Mobile BroadBand, massive machine type communications, and ultra‐reliable low‐latency communications. We provide an overview of 5G enablers, including software‐defined networking and network function virtualization. We cover UAVs and identify their roles in networks as both users and assistants. Furthermore, this survey provides insight into open issues and future research directions related to network slicing and UAVs before concluding