A receiver for optical frequency modulated signals, based on colorless demodulation and detection, is presented. An integrated combination of semiconductor optical amplifier (SOA) and reflective electroabsorption modulator (REAM) is designed to obtain a comb-like spectral detection function, replacing the typically required costly frequency discrimination filter. The spectral properties of the ...

For several years, digital engineering has increasingly taken a more important place in the strategic issues of mechanical engineering companies. Our proposition is an approach that enables technical data to be managed and used throughout the product life-cycle. This approach aims to provide assistance for costing, development and industrialization of the product, and for the capitalization, th...

The aim of this paper is to introduce a new method for finding and reusing process equipment design and inherently safer process configurations by case-based reasoning (CBR) and object database techniques. CBR is based on finding most alike existing solutions and applying the knowledge of their properties for solving new problems in the early phases of design. This supports design engineer's kn...

For several years, digital engineering has increasingly taken a more important place in the strategic issues of mechanical engineering companies. Our proposition is a global approach that enables technical data to be managed and used throughout the product life-cycle. This approach aimed to provide assistance for costing, development and the industrialization of the product, and for the capital...

Compared to current mobile networks, nextgeneration mobile networks are expected to support higher numbers of simultaneously connected devices and to achieve higher system spectrum efficiency and lower power consumption. To achieve these goals, we study the multi-sharing device-todevice (D2D) communication, which allows any cellular user equipment to share its radio resource with multiple D2D d...

Since decisions concerning technology appraisal are of strategic importance to organizations, issues involved are complex and the nature of the decision is difficult to be captured and reused for future decisions in the changing technology selection environment. The proposed knowledge management framework addresses the technology selection and appraisal problem through an ontology-based approac...

Electronics require a complex composition and energy-intensive manufacturing. Yet, most of the world's waste electrical electronic equipment is not collected recycled. Circular economy (CE) strategies can reduce loss materials environmental footprint in electronics. Resource efficiency indicators – typically defined as benefits (handprint) over burdens (footprint) measure materials’ life cycle ...

At the heart of circular economy model is reorientation consumer behaviours away from disposing items before they reach end their functional life as a step towards resource efficiency and reduction environmental impacts. One way to facilitate this change enable proactive redistribution electrical electronic equipment (EEE) with reuse value urban spaces followed by high quality recycling at end-...

Zhang and colleagues discuss the environmental consequences of disposing single use personal protective equipment (PPE).1 But there are crucial steps before disposal that incorporate “5 Rs”: reduce, reuse, recycle, research, rethink.2 With cumulative use, even simple PPE has major consequences. A standard box nitrile gloves, for example, same CO2 equivalent as driving 20 miles in a petrol car....