Robert Iacob, Diana Popescu, Frederic Noel and Cedric Masclet
The paper aims to present the processing pipeline of an assembly immersive simulation application which can manage the interaction between the virtual scene and user using…
Abstract
Purpose
The paper aims to present the processing pipeline of an assembly immersive simulation application which can manage the interaction between the virtual scene and user using stereoscopic display and haptic devices. A new set of elements are integrated in a Collaborative Virtual Environment (CVE) and validated using an approach based on subjective and objective users’ performance criteria. The developed application is intended for Assembly/Disassembly (A/D) analysis, planning and training.
Design/methodology/approach
A mobility module based on contact information is used to handle the assembly components’ movements through real-time management of collision detection and kinematically constraint guidance. Information on CVE architecture, modules and application configuration process are presented. Impact of device type (3 degrees of freedom (DoFs) vs 6 DoFs) over user’s experience is evaluated. Parameters (number of assembled components and components assembly time) are measured for each user and each haptic device, and results are compared and discussed.
Findings
Test results proved the efficiency of using a mobility module based on predefined kinematic constraints for reducing the complexity of collision detection algorithms in real-time assembly haptic simulations. Also, experiments showed that, generally, users performed better with 3 DoFs haptic device compared to 6 DoFs haptic equipment.
Originality/value
The proposed immersive application automates the kinematical joints inference from 3D computer-aided design (CAD) assembly models and integrates it within a haptic-based virtual environment, for increasing the efficiency of A/D process simulations.
Details
Keywords
JOHANN FROBEN, the famous printer of Basle, was born at Hammelburg, in Franconia, about the year 1460. The exact year of his birth is not definitely known, but 1460 is probably…
Abstract
JOHANN FROBEN, the famous printer of Basle, was born at Hammelburg, in Franconia, about the year 1460. The exact year of his birth is not definitely known, but 1460 is probably not far wrong, as we find him established at Basle as a printer in 1491. He was educated at Basle University, where he distinguished himself as a scholar, particularly in the Latin, Greek, and Hebrew languages. After finishing his studies at Basle, he turned his attention to the then new art of printing, and he showed such aptitude that Johann Amerbach, another well‐known printer of Basle, who had set up a press in that city in 1481, induced him to devote his energies to the art, and appointed him to a position in his own printing establishment. Froben thus had the advantage of learning the art of printing under one of the best known printers of the period. In 1491, Froben set up a press of his own in Basle, having become a naturalized citizen of that city the previous year. He had been used in Amerbach's establishment to print with gothic types, and it was, therefore, but natural that his first production should also be printed in that type. This was an octavo Latin Bible, with two columns to a page, printed in a very small gothic type. He afterwards introduced the type invented by Aldus, that known as italic, the first book to be printed with this type being the Adagia of Erasmus, issued in 1513, of which mention is made later. Froben was also instrumental in making the roman type more popular in Germany, as although roman type had been used by German printers for about 20 years, having been introduced by Mentelin at Strassburg, about the year 1470, it was not so much in favour as the gothic type.
Purpose – This chapter is an exploration of how the Canadian media characterize the entire population of Canadian school shootings over a 25-year time period.Methodology/approach…
Abstract
Purpose – This chapter is an exploration of how the Canadian media characterize the entire population of Canadian school shootings over a 25-year time period.
Methodology/approach – This chapter uses frame analysis to examine how the media characterize and frame Canadian school shootings within The Globe and Mail, a Canadian national newspaper.
Findings – This chapter demonstrates that the Canadian media utilize a small number of frames consistently over the 25-year period of analysis. Instead of changing their frame use within events over time, Canadian school shootings receive their own “frame emphasis,” reflecting the unique characteristics of each particular shooting. Additionally, the media utilize “exemplars,” or references to past North American school shootings, that serve as rhetorical anchors for future discussion of shooting events as they occur.
Research limitations/implications – As only one Canadian newspaper was utilized, this chapter may not be reflective of all Canadian news media.
Social implications – This chapter demonstrates the need to explore entire populations of school shootings in order to understand media frame use within and across events over time. It also demonstrates the need for international comparisons of school shootings, as the media utilize international exemplars to demonstrate links between school shooting events.
Originality/value of chapter – This chapter is unique in that it examines the entire population of Canadian school shootings to date (n=27), and it is the first to undertake a frame analysis of exclusively Canadian shootings.