A comparative study of MDH and zero reference model for geometric parameters calibration to enhance robot accuracy

Author(s):  
Xiulan Wen ◽  
DongXia Wang ◽  
Yibing Zhao ◽  
Chuanshuai Kang ◽  
Yin Zhang ◽  
...  
Author(s):  
Li Yang ◽  
Alicia García-Holgado ◽  
Fernando Martínez-Abad

The current technological revolution has reached all social classes, and its educative use by teachers has gone noticed. This chapter provides a comprehensive overview of the six main international frameworks published from 2010 until now. The first objective of this work is to analyze these frameworks' contributions to understanding the development of this competence. The second objective is to determine whether there are any differences between these frameworks through strengths-weaknesses-opportunities-threats (SWOT) analysis. The main aim is to make it easier to integrate an assessment digital competence framework for teachers in other regions of the world that do not have their own framework. The analysis indicates that the six frames have coincidences and nuances in understanding the development of digital competence. This study shows that DigComp is subject to create consensus at the European level about the digital competence components, which can also serve as a conceptual reference model for other countries o educational institutions.


Author(s):  
Morten Paulsen

<P class=abstract>This article presents a comparative study of online education systems in Norwegian, Swedish, and Australian universities. The online education systems discussed comprise content creation tools and systems for learning management, student management, and accounting. The author of this article arrives at the conclusion that there seems to be a general lack of integration between theses systems in all three countries. Further, there seems to be little focus on standards specifications such as IMS Global Learning Consortium (IMS) and Sharable Content Object Reference Model (SCORM) in higher education in all three countries. It was found that both Norway and Sweden value the importance of nationally developed learning management systems and student management systems; however, this does not seem to be the case in Australia. There also seems to be much more national coordination and governmental coercion concerning the choice of student management systems used in Sweden and Norway, than is the case in Australia. Finally, with regard to online education, the most striking difference between these three countries is that of economic policy. In Australia, education is considered an important export industry. In Norway and Sweden, however, the export of education does not seem to be an issue for public discussion.</P>


2014 ◽  
Author(s):  
Liang Du ◽  
Guangming Shi ◽  
Weibin Guan ◽  
Yuansheng Zhong ◽  
Jin Li

2018 ◽  
Vol 48 (4) ◽  
pp. 19-30
Author(s):  
Harsh Sardana ◽  
Mahavir Singh

Abstract The aim of this research paper is to reduce the drag of SUV by using a vortex generator and to calculate the pressure and turbulence profile across the vehicle. The Ahmed Reference Model is taken as a benchmark test. Computational fluid dynamics (CFD) simulation with and without vortex generator is performed at different velocities across the SUV similar to TATA Sumo. The performance of Vortex generator is analyzed at different velocities to obtain the particular velocity at which it will have the minimum value of drag. The end results are henceforth analyzed and a comparative study has been performed with the experimental data given by Gopal and Senthikumar on SUV. And finally it is found that the 10 % of drag reduction is achieved using vortex generator.


2019 ◽  
Vol 56 (4) ◽  
pp. 812-816
Author(s):  
Mihaela Pantea ◽  
Robert Ciocoiu ◽  
Ana Maria Cristina Tancu ◽  
Daniela-Mădălina Nină ◽  
Alexandru Petre ◽  
...  

The purpose of this study was to assess the accuracy of two 3D printed dental models manufactured after intraoral/IO and extraoral/EO scanning. A dental study model (KaVo Dental GmbH/Germany) was used as a reference for this research; this model was scanned with an industrial scanner (XT H 225 ST/Industrial CT scan/Nikon Metrology Inc./U.S.A.) and a reference STL file was generated (coded M1). Two 3D printed models (Form2/FormLabs Inc./U.S.A.) were produced via IO scanning (TRIOS 3 Battery Cart/3 Shape/Denmark), respectively via EO scanning (Swing Dental Scanner/Dof Inc./South Korea) of the reference dental model. The 3D printed models obtained were scanned with the industrial scanner, resulting in other two STL files (coded M2, respectively M3). All the STL files obtained (reference M1; M2; M3) were compared in pairs, using a 3D analysis software. Good results were achieved in obtaining 3D printed dental models via IO or EO scanning, yet, the 3D printed dental model obtained via IO scanning (M3) showed slightly improved dimensional compatibility with the reference model (M1) in comparison with the 3D printed dental model manufactured via EO scanning (M2).


2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire

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