Editorial & Advisory Board - Acta Technica Corviniensis

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In the frame of the same idea, the Laboratory for Information, Support and Access for the Disabled ‐ LISAD was born as a computer lab equipped for disabled students of the Politecnico di Torino, who have the opportunity to use a proper space, laboratory services and a wide range of technological aids. This laboratory has developed a long series of interventions aimed at making the services more accessible to students enrolled on degree courses in distance and with particular attention to those who are in conditions of disability. Arise in this context also the design and implementation of the new web site in an accessible version. Web accessibility refers to the ability to use content and services independently of the disability and hardware and software availability. To achieve this, they follow the guidelines for Web Content Accessibility multimedia standard, WCAG 1.0, WAI ‐ W3C trying to reach a level of compliance equal to the Double‐A (AA WCAG 1.0). The development process was not limited only to the respect of technical requirements, but took into account the knowledge of the real problems and needs of users which are targeted, and research and field testing of technologically innovative solutions to resolve them. These elements have helped to characterize the web site of the new degree courses in distance. THE OTHER ACTIVITIES OF THE CENTRE FOR E‐LEARNING Beside previously mentioned activities, the CeLM is also dedicated to other projects that are supporting the idea of sustainable education at Politecnico di Torino. The center produced the web site "IELTS Speaking Practice," according to the needs expressed by the CLA (Language Centre), designed to practice the English language in the form of exercises and listen to argument content varies, all supported by a dedicated vocabulary accompanied by audio recording of the words. The main purpose is to allow students who must be certified by the English language test IELTS (International English Language Testing System) to practice a path similar to the perception expressed during the exam. By the use of this service, the students are able to: practice listening of the questions that will meet during the IELTS exam; try to answer the questions that are asked during the session of the IELTS test; check their pronunciation and vocabulary, the correct use of terms; independently evaluate and improve the level of their skill aimed with IELTS. CONCLUSIONS Distance learning concept exploits interactive technologies and communication systems to improve the learning experience, also by use of modern ACTA TECHNICA CORVINIENSIS – Bulletin of Engineering videoconferencing communication systems. It has the potential to transform the way of teaching and learning across the board and it can raise standards, and widen participation in lifelong learning. It cannot replace teachers and lecturers, but alongside existing methods it can enhance the quality and reach of their teaching, and reduce the time spent on administration Implementing the eLearning solution will involve a complex mix of technical and “soft” skills training, systems integration and content development and customization that will make possible a truly ambitious education system for a future learning society. REFERENCES [1.] http://www.celm.polito.it [2.] http://www.polito.it [3.] Videoconferencing systems, published by Video Development Initiative, April 2002, USA [4.] eLearning Programme, Annex I, supported by Austrian Development Agency ACTA TECHNICA CORVINIENSIS – BULLETIN of ENGINEERING ISSN: 2067‐3809 [CD‐Rom, online] copyright © UNIVERSITY POLITEHNICA TIMISOARA, FACULTY OF ENGINEERING HUNEDOARA, 5, REVOLUTIEI, 331128, HUNEDOARA, ROMANIA http://acta.fih.upt.ro 68 2012. Fascicule 2 [April–June]
GLOW DISCHARGE OPTICAL EMISSION SPECTROSCOPY OF CARBONITRIDED LAYERS 1. TECHNICAL UNIVERSITY SOFIA – PLOVDIV BRANCH, DEPARTMENT OF MATERIAL SCIENCE AND TECHNOLOGY, BULGARIA 1. Angel ZUMBILEV ABSTRACT: The aim of the present work is to investigate the possibility of applying glow discharge optical emission spectroscopy while building the profile of nitrogen and carbon distribution in carbonitrided layers. 25CrMnSiNiMo steel and Armco‐iron have been carbonitrided in low‐temperature plasma in ammonia and corgon medium. The results show that increased amount of carbon is observed both in the combined zone and in the diffusion zone of the carbonitrided layer. It has been established that after carbonitriding of 25CrMnSiNiMo steel and Armco‐iron at t=550 0 C, P NH3 = 280 Pa, P 82% Ar + 18% CO2 = 120 Pa, τ = 4 h, the most gradual change of the distribution of nitrogen and carbon is achieved in the carbonitrided zone of the layer. KEYWORDS: carbonitrided layers, low‐temperature plasma, GDOES analysis INTRODUCTION Since the beginning of the 1970s glow discharge sources have been used predominantly in the field of investigating alloys. The scientific literature suggests a great number of applications based on glow discharge spectroscopes, not supposed so far, including polymeric mass‐spectroscopy, sensitive assessment of nano‐materials, as well as analysis of very thin (
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