Ioan Doroftei, Daniel Chirita, Ciprian Stamate, Stelian Cazan, Carlos Pascal and Adrian Burlacu
The mass electronics sector is one of the most critical sources of waste, in terms of volume and content with dangerous effects on the environment. The purpose of this study is to…
Abstract
Purpose
The mass electronics sector is one of the most critical sources of waste, in terms of volume and content with dangerous effects on the environment. The purpose of this study is to provide an automated and accurate dismantling system that can improve the outcome of recycling.
Design/methodology/approach
Following a short introduction, the paper details the implementation layout and highlights the advantages of using a custom architecture for the automated dismantling of printed circuit board waste.
Findings
Currently, the amount of electronic waste is impressive while manual dismantling is a very common and non-efficient approach. Designing an automatic procedure that can be replicated, is one of the tasks for efficient electronic waste recovery. This paper proposes an automated dismantling system for the advanced recovery of particular waste materials from computer and telecommunications equipment. The automated dismantling architecture is built using a robotic system, a custom device and an eye-to-hand configuration for a stereo vision system.
Originality/value
The proposed approach is innovative because of its custom device design. The custom device is built using a programmable screwdriver combined with an innovative rotary dismantling tool. The dismantling torque can be tuned empirically.
Details
Keywords
Vesna Arnautovski‐Toševa, Khalil El Khamlichi Drissi and Kamal Kerroum
The purpose of this paper is to present a frequency domain analysis of high frequency behaviour of an indoor Powerline communications (PLC) circuit in the presence of a plaster…
Abstract
Purpose
The purpose of this paper is to present a frequency domain analysis of high frequency behaviour of an indoor Powerline communications (PLC) circuit in the presence of a plaster board/concrete wall structure. The main purpose of this analysis is to investigate the influence of the wall structure on the current distribution and the radiated electric field due to PLC signals in range from 3 MHz to 30 MHz.
Design/methodology/approach
The mathematical model is based on the full‐wave theory formulated by the Mixed Potential Integral Equation (MPIE) for the electric field due to energized thin‐wire conductors in stratified media. The solution for the current and the electric field distribution is obtained by using the Method of Moments.
Findings
Numerical results are obtained of the current distribution along the conductors of the PLC circuit and the radiated electric field in presence of a wall structure. Two cases are analyzed: when the circuitry is placed in the wall; and when the circuitry is placed outside the wall.
Practical implications
The paper presents the mathematical model that may be applied for analysis of indoor PLC circuits placed in presence of wall structures.
Originality/value
In the paper, a full‐wave model of the PLC circuitry in presence of a wall structure is developed, on the basis of MPIE and the Method of Moments.
Details
Keywords
Purification Moscoso, J. Tomás Nogales and Mercedes Caridad
Up until the late eighties, there were few information systems in Spanish universities that offered the user online access to databases. Reasons for this were the high cost of the…
Abstract
Up until the late eighties, there were few information systems in Spanish universities that offered the user online access to databases. Reasons for this were the high cost of the telecommunications and the lack of a sufficiently developed infrastructure. In some cases, the personnel in charge of these systems and, above all, potential users were not acquainted with the services of companies like Red INCA, about which more will be mentioned later.
Wolfgang michalski, Riel Miller and Barrie Stevens
At the outset of the 21st century, confidence in the effectiveness and legitimacy of established forms of governance is ebbing. This article considers historical developments in…
Abstract
At the outset of the 21st century, confidence in the effectiveness and legitimacy of established forms of governance is ebbing. This article considers historical developments in governance, the driving forces likely to transform governance worldwide and the policies that might have the best chance of enhancing governance capacities in line with the desires and needs of the future. Challenges and propects are discussed which entail the dual policy of: encouraging a virtuous circle between governance and technological, economic and social dynamism; and targeting improvements in learning infrastructure, the frameworks for establishing confidence, and the standards (mission/values) within which society functions. By improving the capacity to make and implement decisions throughout society these policies are likely to provide one of the main stepping stones to the realization of people’s aspirations in the 21st century.
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Pascal de Vries and Igor ter Halle
This chapter presents results of a research project in which we give direction to the further design of the technical research that will lay the foundation for an automated…
Abstract
This chapter presents results of a research project in which we give direction to the further design of the technical research that will lay the foundation for an automated digital feedback module. This module will help residents in saving energy and making home improvements in the context of the heat/energy transition. Interviews with residents and field experts were used to gain data about motivations and barriers residents experience when making home adjustments in the heat transition. Results reveal the experiences residents have in this transition. Based on the results, recommendations are made for the further development of an automated digital feedback module.
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Jannik Davidsen, The State and University Library, Aarhus, Denmark, died suddenly on 28 November 1983, aged forty‐two years. Jannik Davidsen was educated as a geologist with…
Abstract
Jannik Davidsen, The State and University Library, Aarhus, Denmark, died suddenly on 28 November 1983, aged forty‐two years. Jannik Davidsen was educated as a geologist with special emphasis on applied geology, at the Universities in Copenhagen and Aarhus.
A simplified command line reader suitable for building interactive programs based on Fortran 77 is presented. The reader is a 20:1 condensation of the comprehensive command…
Abstract
A simplified command line reader suitable for building interactive programs based on Fortran 77 is presented. The reader is a 20:1 condensation of the comprehensive command language interpreter CLIP that supports the NICE integrated software system. The present reader, called TinyCLIP. has been prepared to illustrate basic elements of command‐driven programming for beginners interested in writing Fortran‐based interactive applications software. The reader is table driven. Data lines given to the reader are parsed into items which are stored in a table. The table can be subsequently accessed by the program that processes the commands. Tools for extending the basic language are briefly discussed and specific extensions suggested.
Gabriela Lopes da Silva and Carlos Pulido
The first two years' operation of CDCT online information services are described. Promotional and other activities are included and an outlook is presented emphasizing the need…