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Article
Publication date: 13 March 2019

Kalliopi Evangelia Stavroulia, Maria Christofi, Evangelia Baka, Despina Michael-Grigoriou, Nadia Magnenat-Thalmann and Andreas Lanitis

The purpose of this paper is to propose the use of a virtual reality (VR)-based approach to improve teacher education and life-long professional development. Through…

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Abstract

Purpose

The purpose of this paper is to propose the use of a virtual reality (VR)-based approach to improve teacher education and life-long professional development. Through constant training in real-life based situations but within a safe three-dimensional virtual school environment, teachers are given the opportunity to experience and learn how to react to different types of incidents that may take place in a school environment.

Design/methodology/approach

The current paper presents the design cycle that was followed for the implementation of the VR teacher training system. The effectiveness of the proposed approach is demonstrated with a case study that aimed to promote teachers’ understanding of student’s problematic situations related to substance use. As part of the experimental investigation, the impact of the VR system on participants’ emotions and mood states is evaluated through Electroencephalogram (EEG) measurements, heart rate (HR) recordings and self-reported data.

Findings

Results indicate significant changes to participant’s negative emotional and mood states, suggesting that the scenario and the VR experience had a strong impact on them. Moreover, participants’ HR was increased during the experiment, while the analysis of the EEG signal indicated that the participants experienced a stressful situation that could justify the change in their negative emotions and mood states.

Originality/value

The proposed VR-based approach aims to provide an innovative framework to teacher education and the related training methodology. In the long-term, the proposed VR system aims to form a new paradigm of teacher training, an alternative safe method that will allow user-teachers to learn through trial and error techniques that reflect real-life situations within a three-dimensional school space and without the risk of harming real students. To the best of our knowledge this is one of the first systematic attempts to use a VR-based methodology to address real teachers’ needs. The development of the VR application is linked to both strong theoretical foundations in education derived from the literature but also from real teachers’ problems and requirements derived from an extensive literature analysis, survey and interviews with experts including teachers, school counselors and psychologists. The VR tool addresses specific teachers’ competences as outcome, after an extensive documentation of existing Teachers’ Competence Models and significant guidance by experts who pointed specific competencies of primary importance to teachers.

Details

The International Journal of Information and Learning Technology, vol. 36 no. 3
Type: Research Article
ISSN: 2056-4880

Keywords

Article
Publication date: 14 August 2017

Hanxiang Xu, Shihui Guo, Junfeng Yao and Nadia Magnenat Thalmann

In the process of robot shell design, it is necessary to match the shape of the input 3D original character mesh model and robot endoskeleton, in order to make the input…

Abstract

Purpose

In the process of robot shell design, it is necessary to match the shape of the input 3D original character mesh model and robot endoskeleton, in order to make the input model fit for robot and avoid collision. So, the purpose of this paper is to find an object of reference, which can be used for the process of shape matching.

Design/methodology/approach

In this work, the authors propose an interior bounded box (IBB) approach that derives from oriented bounding box (OBB). This kind of box is inside the closed mesh model. At the same time, it has maximum volume which is aligned with the object axis but is enclosed by all the mesh vertices. Based on the IBB of input mesh model and the OBB of robot endoskeleton, the authors can complete the process of shape matching. In this paper, the authors use an evolutionary algorithm, covariance matrix adaptation evolution strategy (CMA-ES), to approximate the IBB based on skeleton and symmetry of input character mesh model.

Findings

Based on the evolutionary algorithm CMA-ES, the optimal position and scale information of IBB can be found. The authors can obtain satisfactory IBB result after this optimization process. The output IBB has maximum volume and is enveloped by the input character mesh model as well.

Originality/value

To the best knowledge of the authors, the IBB is first proposed and used in the field of robot shell design. Taking advantage of the IBB, people can quickly obtain a shell model that fit for robot. At the same time, it can avoid collision between shell model and the robot endoskeleton.

Details

International Journal of Intelligent Computing and Cybernetics, vol. 10 no. 3
Type: Research Article
ISSN: 1756-378X

Keywords

Article
Publication date: 1 February 1982

Nadia Magnenat‐Thalmann, Daniel Thalmann and Philippe Bergeron

The INVIDO system is a graphical tool which was designed and implemented for studying user reactions to videotex systems. For different themes, including weather…

Abstract

The INVIDO system is a graphical tool which was designed and implemented for studying user reactions to videotex systems. For different themes, including weather reporting, sport results and winning numbers in lotteries, different visual presentations have been created. As home visual information systems will invade the market in the next few years, it is essential to develop new tools which can give an idea of the user's reaction to this kind of information. The entire methodology (graphics capabilities, implementation and investigation) is presented. Numerous examples are also given.

Details

Online Review, vol. 6 no. 2
Type: Research Article
ISSN: 0309-314X

Article
Publication date: 6 March 2017

Shuixian Hu, Ruomei Wang and Fan Zhou

The purpose of this paper is to present an efficient algorithm for multi-layer garment fitting simulation based on the geometric method to solve the low time cost problem…

Abstract

Purpose

The purpose of this paper is to present an efficient algorithm for multi-layer garment fitting simulation based on the geometric method to solve the low time cost problem during penetration detection and processing. This is more practical to design a CAD system to preview the multi-layer garment fitting effect in daily life.

Design/methodology/approach

The construction of a multi-layer garment based on existing 3D garments is a suitable method because this method is similar to the daily method of multi-layer dressing. The major problem is the penetration phenomenon between different garments because these 3D garment’s geometric shapes are constructed in different situations. In this paper, an efficient algorithm of multi-layer garment simulation is reported. A face-face intersection detection algorithm is designed to detect the penetration region between multi-layer garments fast and a geometric penetration processing algorithm is presented to solve the penetration phenomenon during multi-layer garment simulation.

Findings

This method can quickly detect the penetration between faces, and then deal with the penetration for multi-layer garment construction. Experimental results show that this method can not only remove the penetration but basically maintain the trend of wrinkles efficiently. At the same time, the garments used in the experiment have almost more than 5,800 faces, but the resolving time is under five seconds.

Originality/value

The main originalities of the multi-layer garment virtual fitting algorithm based on the geometric method are highly efficient both in terms of time cost and fitting effect. Based on this method, the technology of multi-layer garment virtual fitting can be used to design a novel CAD system to preview the multi-layer garment fitting effect in real time. This is a pressing requirement of virtual garment applications.

Details

International Journal of Clothing Science and Technology, vol. 29 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 19 April 2022

Ana Julia Dal Forno, Walakis Vieira Bataglini, Fernanda Steffens and Antonio Augusto Ulson de Souza

The purpose of this paper is to present a diagnostic instrument of the maturity of Industry 4.0 technologies adapted to the textile and clothing sector and constructed…

Abstract

Purpose

The purpose of this paper is to present a diagnostic instrument of the maturity of Industry 4.0 technologies adapted to the textile and clothing sector and constructed based on the technological references that support this industrial evolution process.

Design/methodology/approach

The proposed methodology began with the systematic literature review using the SciMAT software and then a questionnaire was developed with 49 questions divided into 5 categories – demography, technologies, strategy, digital skills and benefits of the deployment.

Findings

The application in 19 different sectors and 72 people in a textile industry showed this sector is still traditional. The diagnosis results pointed that the level of implementation of Industry 4.0 is considered the first level, later advancing in this order to levels of connectivity, visibility, predictability and adaptability of the processes.

Research limitations/implications

Only in one company was applied the developed instrument, in this case study, a factory that makes children's and adult clothing items located in Santa Catarina, Brazil.

Practical implications

Through the use of this assessment instrument, it is possible to perform an internal benchmarking at the company detecting the strong and weak points, as well as involve a multidisciplinary collaborator team.

Social implications

The comparisons and improvements may be carried out per dimension or sector, which motivates the constant application and assessment of improvements. The instrument to diagnose the maturity of Industry 4.0 technologies in the textile and clothing sector is considered an effective tool for application in a single company or to have its use expanded in a new piece of research to the entire industrial textile segment.

Originality/value

The developed diagnostic tool may be used for both the internal assessment of the company and its placement relative to its competitors, involving several companies from the same sector. It is possible to know about what level of Industry 4.0 maturity the company is and after benchmarking by others and improve.

Details

Journal of Fashion Marketing and Management: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1361-2026

Keywords

Article
Publication date: 26 August 2014

Ricardo Leandro Parreira Duarte, Abdennour El Rhalibi and Madjid Merabti

– The purpose of this paper is to present a novel coarticulation and speech synchronization framework compliant with MPEG-4 facial animation (FA).

Abstract

Purpose

The purpose of this paper is to present a novel coarticulation and speech synchronization framework compliant with MPEG-4 facial animation (FA).

Design/methodology/approach

The system the authors have developed uses MPEG-4 FA standard and other development to enable the creation, editing and playback of high-resolution 3D models; MPEG-4 animation streams; and is compatible with well-known related systems such as Greta and Xface. It supports text-to-speech for dynamic speech synchronization. The framework enables real-time model simplification using quadric-based surfaces.

Findings

The preliminary experiments show that the coarticulation technique the authors have developed gives overall good and promising results when compared to related techniques.

Originality/value

The coarticulation approach provides realistic and high performance lip-sync animation, based on Cohen-Massaro's model of coarticulation adapted to MPEG-4 FA specification.

Details

Kybernetes, vol. 43 no. 8
Type: Research Article
ISSN: 0368-492X

Keywords

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