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Article
Publication date: 17 April 2004

Massimiliano Giorgio and Michele Staiano

Successful implementation of statistical process control techniques requires for operational definitions and precise measurements. Nevertheless, very often analysts can…

Abstract

Successful implementation of statistical process control techniques requires for operational definitions and precise measurements. Nevertheless, very often analysts can dispose of process data available only by linguistic terms, that would be a waste to neglect just because of their intrinsic vagueness. Thus a hybrid approach, which integrates fuzzy set theory and common statistical tools, sounds useful in order to improve effectiveness of statistical process control in such a case. In this work, a fuzzy approach is adopted to manage linguistic information, and the use of a Chi‐squared control chart is proposed to monitor process performance.

Details

Asian Journal on Quality, vol. 5 no. 1
Type: Research Article
ISSN: 1598-2688

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Article
Publication date: 26 September 2008

Massimiliano Fantini, Francesca de Crescenzio, Franco Persiani, Stefano Benazzi and Giorgio Gruppioni

The purpose of this paper is to describe the method of virtually and physically reconstructing the missing part of a badly damaged medieval skull by means of reverse…

Abstract

Purpose

The purpose of this paper is to describe the method of virtually and physically reconstructing the missing part of a badly damaged medieval skull by means of reverse engineering, computer‐aided design (CAD) and rapid prototyping (RP) techniques.

Design/methodology/approach

Laser scanning data were used to create the 3D model of the damaged skull. Starting from this digital model, a virtual reconstruction of the missing part of the skull, based on the ideal symmetry with respect to the mid‐sagittal plane, was achieved in a CAD environment. Finally, the custom‐designed model was directly fabricated by means of the RP process.

Findings

The result shows that the designed missing part of the skull fits very well with the existing skeletal remains. The final physical assembly of the prototyped element on the damaged skull was tested, restoring it to its whole original shape.

Research limitations/implications

The entire process was time‐consuming and may be applied just to the most representative skeletal remains.

Practical implications

The method allows accurate fabrication of the missing part of the skull to be joined with the original skeletal remains. The advantage of using this technique is that the joining operation can be carried out without any need of supplementary connecting material, such as glue or plaster, to fix together the two parts.

Originality/value

The reversible and non‐invasive method improves the restoration process, reduces the risk of damage to the skeletal structure and allows reversion to the original repair as it was before.

Details

Rapid Prototyping Journal, vol. 14 no. 5
Type: Research Article
ISSN: 1355-2546

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Article
Publication date: 15 August 2016

Silvia De Simone, Gianfranco Cicotto, Roberta Pinna and Luca Giustiniano

Considering the ongoing international debate on the role of public administrations in economic systems, the interest around public service motivation (PSM) has…

Abstract

Purpose

Considering the ongoing international debate on the role of public administrations in economic systems, the interest around public service motivation (PSM) has significantly grown among practitioners and scholars in the past two decades. Following the research streams that have investigated topics of organizational behavior within the public context, the purpose of this paper is to examine the influence of PSM on public employees’ feelings of job satisfaction. The novelty of the study lies in linking some characteristics of the work context presumed to be more prevalent in public organizations with specific job characteristics, regarded as relevant antecedents of job satisfaction.

Design/methodology/approach

The study is based on two complementary studies conducted in an Italian public administration. The paper shows how PSM influences job satisfaction, job engagement, and life satisfaction.

Findings

This paper shows how PSM influences job satisfaction, job engagement, and life satisfaction. The findings display how job engagement affects both job and life satisfaction in such contexts. Additionally, the findings display how job engagement affects both job and life satisfaction in such contexts.

Research limitations/implications

Although based on a specific context of public administration, the analysis allows some generalizations.

Originality/value

Based on these results, the paper contributes to two main streams of the literature. First, it enriches the existing research on PSM by analyzing how it can be managed in complex organizations. Second, it informs the literature on job satisfaction and work-related stress and relates to the intersection between organizational behavior and human resource management that informs the drawing up of HR policies. Furthermore, the paper sheds new light on how to deal with such problems and at the same time opens new avenues for investigations.

Details

Management Decision, vol. 54 no. 7
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 20 March 2017

Yee Ling Yap, Yong Sheng Edgar Tan, Heang Kuan Joel Tan, Zhen Kai Peh, Xue Yi Low, Wai Yee Yeong, Colin Siang Hui Tan and Augustinus Laude

The design process of a bio-model involves multiple factors including data acquisition technique, material requirement, resolution of the printing technique…

Abstract

Purpose

The design process of a bio-model involves multiple factors including data acquisition technique, material requirement, resolution of the printing technique, cost-effectiveness of the printing process and end-use requirements. This paper aims to compare and highlight the effects of these design factors on the printing outcome of bio-models.

Design/methodology/approach

Different data sources including engineering drawing, computed tomography (CT), and optical coherence tomography (OCT) were converted to a printable data format. Three different bio-models, namely, an ophthalmic model, a retina model and a distal tibia model, were printed using two different techniques, namely, PolyJet and fused deposition modelling. The process flow and 3D printed models were analysed.

Findings

The data acquisition and 3D printing process affect the overall printing resolution. The design process flows using different data sources were established and the bio-models were printed successfully.

Research limitations/implications

Data acquisition techniques contained inherent noise data and resulted in inaccuracies during data conversion.

Originality/value

This work showed that the data acquisition and conversion technique had a significant effect on the quality of the bio-model blueprint and subsequently the printing outcome. In addition, important design factors of bio-models were highlighted such as material requirement and the cost-effectiveness of the printing technique. This paper provides a systematic discussion for future development of an engineering design process in three-dimensional (3D) printed bio-models.

Details

Rapid Prototyping Journal, vol. 23 no. 2
Type: Research Article
ISSN: 1355-2546

Keywords

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