Search results for "Turing"
showing 10 items of 2644 documents
Workforce active ageing case study in a Romanian manufacturing company
2017
Ageing workforce is a major trend that characterizes the demographic evolution of Europe, which generally affects the society, but also the organizations from economic and social point of view. Employers should change their negative perceptions of ageing workforce, whereas the changes that occur along with ageing are unable to influence the efficiency of work, assuming that a suitable strategy implemented to prevent and manage potential problems. The paper includes European and national statistics on the issue, a case study analysing the workforce ageing management in a Romanian manufacturing company, which has succeeded in achieving the active ageing target, and - on this basis - several g…
Six-years-long effects of the Italian policies for photovoltaics on the grid parity of grid-connected photovoltaic systems installed in urban contexts
2017
Abstract The purpose of this study is investigating the grid parity (GP) time and the levelized cost of energy (LCOE) of grid-connected photovoltaic (PV) systems installed in densely urbanized contexts. The analysis, which was elaborated for three Italian cities, considered the effects of the promoting policies enacted by the Italian government from June 2010 to May 2016. An appropriate methodology was applied with the aim of realistically defining the energy produced by PV systems installed on buildings with different roof types and number of floors. The calculus of the disbursements considered the operating, maintenance and insurance costs and the wear of PV panels and inverters. The resu…
Neural Sensorless Control of Linear Induction Motors by a Full-Order Luenberger Observer Considering the End Effects
2012
This paper proposes a neural based full-order Luenberger adaptive speed observer for sensorless linear induction motor (LIM) drives, where the linear speed is estimated with the total least squares (TLS) EXIN neuron. A novel state space-vector representation of the LIM has been deduced, taking into consideration its dynamic end effects. The state equations of the LIM have been rearranged into a matrix form to be solved, in terms of the LIM linear speed, by any least squares technique. The TLS EXIN neuron has been used to compute online, in recursive form, the machine linear speed. A new gain matrix choice of the Luenberger observer, specifically taking into consideration the LIM dynamic end…
Modelling of Cutting and Machining: 10 years of ESAFORM activity
2007
This paper reports on the state of the art in the simulation of cutting and machining processes. The contributions provided by researchers all over the world and published on the Proceedings of the European Scientific Association for material FORMing (ESAFORM) Conferences are highlighted. They role played by ESAFORM in this field of research has been quite active, as demonstrated by the number of contributions, their relevant scientific content and finally by the vitality of the minisymposium on Modeling of Machining that has been organized since 2001 with no interruptions.
Special Issue of Journal of Manufacturing Systems on New Trends in Manufacturing Systems Research
2019
Special issue of journal of manufacturing systems on new trends in manufacturing systems research
Special Issue of Journal of Manufacturing Systems on Advancing Manufacturing Systems Research at NAMRC 46
2018
Special Issue of Journal of Manufacturing Systems on Advancing Manufacturing Systems Research at NAMRC 46
Latest advancements in manufacturing systems at NAMRC 45
2017
Latest manufacturing technologies are more prevalent thanbefore due to recent industrial revolution (or Industry 4.0), continu-ous business decentralization and needs for better overall resourceefficiency and effectiveness. Manufacturers are competing in aglobal, dynamic marketplace that demands excellence in qual-ity and service, throughput, innovativeness, agility in production,short response time to changing markets, and tight profitable mar-gins. In the 21 st century, manufacturing will be gradually pushedtowards a distributed environment with increasing dynamism oruncertainty. It is envisioned that Cyber-Physical Systems (CPS),Cloud Manufacturing, Internet of Things, and Big Data Analy…
Improvement of learning quality in manufacturing technology: a case study
2017
The paper presents the initial part of a study designed to understand the place of the present generation of engineering students in the global picture of their working life. The education represents an inestimable good that accompanies peoples through their existence. Higher education is the place were teenagers with different profiles modelled by their families, studies; experiences and so on come to meet, in most cases, the final education platform before employment. In light of this the higher education has the major role of prepare the students with the knowledge and skills appropriate to the labour market. That means with the knowledge and skills they need and their future employers a…
Machining Economics and Optimization
2008
This chapter provides comprehensive knowledge regarding economical considerations and possible optimization methods of machining operations. The background of machining economics, including costs, time and productivity, related for typical machining operations (such as turning, milling and drilling) is outlined. The components of machining costs and time related to the cutting speed are distinguished, and appropriate mathematical models are presented. Optimization procedures allowing selection of optimal values of cutting speed and feed rate based on tool life and energy efficiency criteria are overviewed. In the first case, the economic cutting speed and cutting speed corresponding to the …
A Multi-Objective Approach to Optimize a Periodic Maintenance Policy
2012
The present paper proposes a multi-objective approach to find out an optimal periodic maintenance policy for a repairable and stochastically deteriorating multi-component system over a finite time horizon. The tackled problem concerns the determination of the system elements to replace at each scheduled and periodical system inspection by ensuring the simultaneous minimization of both the expected total maintenance cost and the expected global system unavailability time. It is assumed that in the case of system elements failure they are instantaneously detected and repaired by means of minimal repair actions in order to rapidly restore the system. A nonlinear integer mathematical programmi…