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Femtosecond laser micromachining with extended depth of focus by using diffractive lenses
(Elsevier, 2014-06-01)
We show that a simple diffraction focusing element can alleviate mechanical tolerances in ultrafast laser microprocessing. In particular, we experimentally demonstrate that, in comparison with a conventional refractive ...
Social Live Streaming tools for the development of Virtual Workshops
(Universidad Politécnica de Valencia, 2017)
The increase of Social Media on the Internet has brought an unprecedented
revolution which has changed the existing social communication systems to date.
Currently, a high percentage of population in the developed world ...
Resonance-Based Procedure for Locating Failed Luminaires in AGL Systems
(Institute of Electrical and Electronics Engineers (IEEE), 2017-08)
Aeronautical ground lighting (AGL) systems provide a visual reference for aircraft during airport operations. Fast detection and location of failed luminaires is an important safety concern in AGL systems. In the event of ...
Relationship between the degree of creativity and the quality of design outcomes
(Universidad Nacional de Colombia, 2017-03)
This work analyses the relationship between the degree of creativity, measured through the level of novelty and the level of usefulness, and
the quality of the design outcomes. To do so, a total of twelve conceptual designs ...
One-Cycle Zero-Integral-Error Current Control for Shunt Active Power Filters
(MDPI, 2020-11-26)
Current control has, for decades, been one of the more challenging research fields in the development of power converters. Simple and robust nonlinear methods like hysteresis or sigma-delta controllers have been commonly ...
Positive-Net-Damping Stability Criterion in Grid-Connected VSC Systems
(Institute of Electrical and Electronics Engineers (IEEE), 2017-05)
Resonance instabilities in power systems can be assessed with the positive-net-damping stability criterion. This criterion is a review of the complex torque coefficients method but it does not provide the frequency of the ...
Guiding questions for increasing the generation of product ideas to meet changing needs (QuChaNe)
(Springer, 2021-03-23)
One of the reasons why products are replaced is as a consequence of changes in the users’ personal life. Adaptable or upgradable products have the advantage that, to some extent, they counter dissatisfaction in products ...
Sustainable machining of molds for tile industry by minimum quantity lubrication
(Elsevier, 2019-08-17)
Nowadays, to reduce water pollution, soil contamination, and human health hazards, the environmental legislation is forcing manufacturing companies to avoid the use of metalworking fluids. Thus, the adoption of the dry ...
Acquisition of transversal skills through PBL: a study of the perceptions of the students and teachers in materials science courses in engineering
(Universitat Politècnica de València, 2015)
The main goal of this work is describing the experience in using Project Based Learning (PBL) methodology in Materials Science courses in several Engineering degrees. The courses were taught simultaneously in four different ...
Quasi-Z-Source Inverter-Based Photovoltaic Power System Modeling for Grid Stability Studies
(MDPI, 2021-01-19)
Quasi-Z-source inverters (qZSIs) are becoming a powerful power conversion technology
in photovoltaic (PV) power systems because they allow energy power conversion in a single stage
operation. However, they can cause ...