Erratum: Radu, M.-C., et al. The Impact of the COVID-19 Pandemic on the Quality of Educational Process: A Student Survey. Int. J. Environ. Res. Public Health 2020, 17, 7770

Radu, Maria-Crina; Schnakovszky, Carol; Herghelegiu, Eugen; Ciubotariu, Vlad-Andrei; Cristea, Ion

doi:10.3390/ijerph17238778

Cited by 13 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Contour shapes can be formed by ISF using a hemispherical ended tool or by attaching a hardened steel ball to the end of tool shank, which are controlled by CNC program [2,3]. In spite of its high tool speed with a high feed rate, ISF consumes more time than that of a conventional forming process and still SPIF is being utilized in rapid prototyping due to its cost effectiveness [4]. In SPIF, feed, speed and vertical step depth of tool influences the formability of material being formed and also its accuracy.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Ramkumar¹,

Paulraj²,

Elangovan³

et al. 2018

View full text Add to dashboard Cite

Single point incremental forming process is a most economical Die-less forming process. The major constraint of it is that it is a time consuming process. In this work, a new attempt was made in incremental forming process using Multipoint tool for SS430 sheets to increase the formability and to reduce forming time. Fractography analysis was made to study the size of voids that were formed during fracture. The forming limit diagrams were drawn and compared for single point incremental forming and the multipoint incremental forming of SS430 sheet. It was proved that the formability of SS430 sheet in the multipoint forming was better than the formability of that in single point forming and the time consumed was reduced. The strain distribution in both processes had also been studied along with surface roughness.

show abstract

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Ramkumar¹,

Paulraj²,

Elangovan³

et al. 2018

View full text Add to dashboard Cite

show abstract

Online learning during the Covid-19 pandemic: How university students’ perceptions, engagement, and performance are related to their personal characteristics

2023

View full text Add to dashboard Cite

University students faced unexpected challenges in online learning during the Covid-19 pandemic. Findings from early phases of the Covid-19 pandemic and before show that online learning experiences may vary from student to student and depend on several personal characteristics. However, the relative importance of different students’ personal characteristics for their online learning experiences at later phases of the Covid-19 pandemic is still unclear. This cross-sectional, correlational study investigates how personal characteristics of university students are related to five dimensions of online learning perception and to their engagement and performance in online courses. In an online survey, 413 students from German universities provided full information on their online learning experiences and personal characteristics in terms of demographic information, Big Five personality traits, self-regulation skills, three facets of self-efficacy, and two types of state anxiety. Results of multiple regression analyses show that students’ age was significantly positively related to all online learning perceptions and engagement in online courses. Our findings also confirm that self-regulation skills and academic and digital media self-efficacy are important factors in various online learning experiences. In contrast, students’ personality traits and state anxiety were less important for most online learning experiences. Noteworthy, several bivariate associations between personal characteristics and online learning experiences are not reflected in the multiple regression model. This underscores the need to consider relevant variables simultaneously to evaluate their relative importance and to identify key personal characteristics. Overall, our results show valuable starting points for theory development and educational interventions.

show abstract