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1 – 7 of 7Elena Stefana, Paola Cocca, Federico Fantori, Filippo Marciano and Alessandro Marini
This paper aims to overcome the inability of both comparing loss costs and accounting for production resource losses of Overall Equipment Effectiveness (OEE)-related approaches.
Abstract
Purpose
This paper aims to overcome the inability of both comparing loss costs and accounting for production resource losses of Overall Equipment Effectiveness (OEE)-related approaches.
Design/methodology/approach
The authors conducted a literature review about the studies focusing on approaches combining OEE with monetary units and/or resource issues. The authors developed an approach based on Overall Equipment Cost Loss (OECL), introducing a component for the production resource consumption of a machine. A real case study about a smart multicenter three-spindle machine is used to test the applicability of the approach.
Findings
The paper proposes Resource Overall Equipment Cost Loss (ROECL), i.e. a new KPI expressed in monetary units that represents the total cost of losses (including production resource ones) caused by inefficiencies and deviations of the machine or equipment from its optimal operating status occurring over a specific time period. ROECL enables to quantify the variation of the product cost occurring when a machine or equipment changes its health status and to determine the actual product cost for a given production order. In the analysed case study, the most critical production orders showed an actual production cost about 60% higher than the minimal cost possible under the most efficient operating conditions.
Originality/value
The proposed approach may support both production and cost accounting managers during the identification of areas requiring attention and representing opportunities for improvement in terms of availability, performance, quality, and resource losses.
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Stefano Marini, Lucia D'Agostino, Carla Ciamarra, Domenico De Berardis and Alessandro Gentile
The purpose of this case report is to report the clinical experience of the use of gabapentin in the management of problem behaviors in a person with autism spectrum disorder and…
Abstract
Purpose
The purpose of this case report is to report the clinical experience of the use of gabapentin in the management of problem behaviors in a person with autism spectrum disorder and comorbid intellectual disability. Autism spectrum disorder is a neurodevelopmental disorder with a high prevalence of intellectual disability. Challenging behaviors in autism spectrum disorder are very common. In recent years, the hypothesis that the symptoms of autism derive from a deficiency of the inhibitory neurotransmission of gamma-aminobutyric acid is gaining considerable weight.
Design/methodology/approach
Exploring behavioral symptoms improvement in an adult man with ASD and severe intellectual disability taking gabapentin.
Findings
The rating scales used show improvement in challenging behaviors and aggressions. No side effects were observed.
Originality/value
Currently, there are no authorized drugs for the treatment of the symptomatic features of autism spectrum disorder, but drugs are used for comorbid psychopathological aspects. The authors want to speculate on a hypothetical function of gabapentin in remodeling the expression of alpha-2-delta subunits in people with autism and the processing of neural information.
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Humberto Falcão Martins, Ricardo Corrêa Gomes and Renata Vilhena
The war cut off students in England from foreign countries at the same time as it awakened an increased interest in their affairs, and, compelling the inquirer to fall back on…
Abstract
The war cut off students in England from foreign countries at the same time as it awakened an increased interest in their affairs, and, compelling the inquirer to fall back on English or American resources in his studies, brought a realization of the deficiencies of our libraries. With the gradual re‐establishment of relations, it is worth assessing the situation revealed by the years of isolation, if only because this necessary task does not seem to be anybody's responsibility.
Alessandro Corsini, Franco Rispoli and Andrea Santoriello
An original finite element scheme for advection‐diffusion‐reaction problems is presented. The new method, called spotted Petrov‐Galerkin (SPG), is a quadratic Petrov‐Galerkin (PG…
Abstract
Purpose
An original finite element scheme for advection‐diffusion‐reaction problems is presented. The new method, called spotted Petrov‐Galerkin (SPG), is a quadratic Petrov‐Galerkin (PG) formulation developed for the solution of equations where either reaction (associated to zero‐order derivatives of the unknown) and/or advection (proportional to first‐order derivatives) dominates on diffusion (associated to second‐order derivatives). The addressed issues are turbulence and advective‐reactive features in modelling turbomachinery flows.
Design/methodology/approach
The present work addresses the definition of a new PG stabilization scheme for the reactive flow limit, formulated on a quadratic finite element space of approximation. We advocate the use of a higher order stabilized formulation that guarantees the best compromise between solution stability and accuracy. The formulation is first presented for linear scalar one‐dimensional advective‐diffusive‐reactive problems and then extended to quadrangular Q2 elements.
Findings
The proposed advective‐diffusive‐reactive PG formulation improves the solution accuracy with respect to a standard streamline driven stabilization schemes, e.g. the streamline upwind or Galerkin, in that it properly accounts for the boundary layer region flow phenomena in presence of non‐equilibrium effects.
Research limitations/implications
The numerical method here proposed has been designed for second‐order quadrangular finite‐elements. In particular, the Reynolds‐Averaged Navier‐Stokes equations with a non‐linear turbulence closure have been modelled using the stable mixed element pair Q2‐Q1.
Originality/value
This paper investigated the predicting capabilities of a finite element method stabilized formulation developed for the purpose of solving advection‐reaction‐diffusion problems. The new method, called SPG, demonstrates its suitability in solving the typical equations of turbulence eddy viscosity models.
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Tung-Sheng Wang, Austin Rong-Da Liang, Chia-Chun Ko and Jie-Heng Lin
The objective of this study is to investigate the impact of geographical labeling (GL) and place of origin on consumers' perceived tea quality and purchase intention, as well as…
Abstract
Purpose
The objective of this study is to investigate the impact of geographical labeling (GL) and place of origin on consumers' perceived tea quality and purchase intention, as well as to analyze the moderating effects of traditional tea processing methods and the price of tea.
Design/methodology/approach
This study conducts two experiments by combining a simulated scenario with a questionnaire; overall, 383 and 678 valid samples were collected, respectively.
Findings
(1) The existence of GL is extremely important and will give consumers the perception of higher tea quality resulting in higher purchase intention. The tea’s production method and geographic location are strongly correlated. Thus, whether the tea is produced with traditional methods has a moderating effect on the place of origin, GL, and consumer response in study 1. (3) Different tea pricing has a moderating effect on the place of origin/GL and consumer response in study 2.
Originality/value
This study demonstrates the relationship between consumers' perception of tea GL, and their response helps to identify the difference between Eastern and Western tea culture, which can be used to help promote and market tea leaves. Multiple clues show a complementary effect between the place of origin and the GL on tea packaging. In addition, perception of the tea craftsmanship from the place of origin (long-term) and the price manipulation (short-term) have a moderating effect, which can be used to improve tea marketing design in academia and in practice.
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