Search results for "Turin"
showing 10 items of 2664 documents
Policy-based channel access mechanism selection for QoS provision in IEEE 802.11e
2007
The appearance of the 802.11e standard made the 802.11 wireless local area networks (WLANs) capable of providing different levels of quality of service (QoS). This standard defines two new channel access mechanisms (CAMs), namely the enhanced distributed channel access (EDCA) and the HCF controlled channel access (HCCA). The introduction of two CAMs increases the complexity of traffic management, since now not only the available resources have to be distributed, but also the optimal CAM for each data flow has to be selected. However, the best CAM selection algorithm is still not clear. This paper presents and analyses different CAM selection policies in order to derive the best-suited strat…
Identification and Evaluation of Industry 4.0 Solutions In the Automotive Industry - a Case Study
2020
This paper attempts to provide an identification and an evaluation of the implementation of Industry 4.0 solutions in a Polish enterprise in the automotive industry from the SME sector. This research investigation enhances the literature on Industry 4.0 by providing evidence that the implementation of this concept is beneficial to an economic entity. Despite this, human work on certain activities in the production process cannot be replaced by a robot or automated machine. Based on the research, it can be concluded that the concept of Industry 4.0 is being developed step by step. Automated machines and devices are introduced to facilitate the production process. Data sets are used to make d…
Integrating Manufacturing Equipments Using a Shop Floor Control System
2006
A generic manufacturing system must interact with an environment characterized by a strong competition and by continuous technological changes. For this reason there is the necessity to make the system easily and economically modifiable in its hardware and software configuration. One of the main problems in making a manufacturing system re-configurable concerns its control system which has to be accordingly scalable and object oriented. This paper presents a methodology for making a manufacturing control system actually reconfigurable and adaptable to hardware changes in the manufacturing systems components. In particular, a PC-based shop-floor control system has been realized. Such system …
Application of learning pallets for real-time scheduling by use of artificial neural network
2011
Author's version of a chapter in the book: 5th International Conference on Software, Knowledge Information, Industrial Management and Applications (SKIMA). Also available from the publisher at: http://dx.doi.org/10.1109/SKIMA.2011.6089986 Generally, this paper deals with the problem of autonomy in logistics. Specifically here, a complex problem in inbound logistics is considered as real-time scheduling in a stochastic shop floor problem. Recently, in order to comply with real-time decisions, autonomous logistic objects have been suggested as an alternative. Since pallets are common used objects in carrying materials (finished or semi-finished), so they have the possibility to undertake the …
The impact of Kaizen Events on improving the performance of automotive components' first-tier suppliers
2009
Purpose - The aim of this paper is to explore the possibility of improving production indicators by implementing Kaizen Events. The teams are composed of both managers and operators with the aim of developing and/or implementing improvements in three to five days. Methodology - The empirical research will consists of the description of the results obtained in 11 industrial companies from the automotive components industry. In each company, we have followed up different interventions over a 9-12-month period. Findings - We shall present the initial situation, the activities carried out by the companies and the evolution of manufacturing performance approximately three months after the activi…
The links between smart specialisation strategy, the quintuple helix model and living labs
2018
This paper analyzes how the Living Labs can be designed as tools for a more effective implementation of the Smart Specialisation Strategy (S3) within the Quintuple Helix Model. Above all, the Quintuple Helix espouses the formation of a constructive situation encompassing ecology, knowledge and innovation, and creating extensive synergy between economy, society, and democracy. In this paper, we shall be focusing on the Quintuple Helix and Living Labs geared towards creating a shared arena in which services, processes and new ways of working via technology can be developed and tested with user representatives and researchers. Since the Living Lab is a rather new research area, the number of s…
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.