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Article
Publication date: 22 August 2017

Ying-Guo Zhou, Bei Su and Lih-sheng Turng

Although the feasibility and effectiveness of the fused deposition modeling (FDM) method have been proposed and developed, studies of applying this technology to various materials…

Abstract

Purpose

Although the feasibility and effectiveness of the fused deposition modeling (FDM) method have been proposed and developed, studies of applying this technology to various materials are still needed for researching its applicability, especially with regard to polymer blends and composites. The purpose of this paper is to study the deposition-induced effect and the effect of compatibilizers on the mechanical properties of polypropylene and polycarbonate (PP/PC) composites.

Design/methodology/approach

For this purpose, three different deposition modes for PP/PC composites with or without compatibilizers were used for the FDM method and tested for tensile properties. Also, parts with the same materials were made by injection molding and used for comparison. In addition, different deposition speeds were used to investigate the different deposition-induced effects. Furthermore, the behavior of the mechanical properties was clarified with scanning electron microscope images of the fracture surfaces.

Findings

The research results suggest that the deposition orientation has a significant influence on the mechanical behavior of PP/PC composite FDM parts. The results also indicate that there is a close relationship between the mechanical properties and morphological structures which are deeply influenced by compatibilization. Compared with injection molded parts, the ductility of the FDM parts can be dramatically improved due to the formation of fibrils and micro-fibrils by the deposition induced during processing.

Originality/value

This is the first paper to investigate a PP/PC composite FDM process. The results of this paper verified the applicability of PP/PC composites to FDM technology. It is also the first time that the deposition-induced effect during FDM has been investigated and studied.

Details

Rapid Prototyping Journal, vol. 23 no. 5
Type: Research Article
ISSN: 1355-2546

Keywords

Book part
Publication date: 13 September 2018

Samane Maroufi, Claudia A. Echeverria, Farshid Pahlevani and Veena Sahajwalla

Every year, tens of millions of the 1.4 billion cars on the world’s roads are decommissioned. While the ferrous and other metals that constitute about 75% of a vehicle by weight…

Abstract

Every year, tens of millions of the 1.4 billion cars on the world’s roads are decommissioned. While the ferrous and other metals that constitute about 75% of a vehicle by weight can be readily and profitably recycled, the remaining mix of plastics, glass, composites, complex materials, fragments and contaminants are mainly destined for landfill as automotive shredder residue (ASR). For every car, approximately 100–200 kg of ASR is disposed of in landfill, posing a growing technical and environmental challenge worldwide. The recovery of the ASR for high-end application is the focus of this study, aiming to optimise the use of these valuable resources and minimise the extractive pressure for raw materials, a future green manufacturing, contributing towards a zero waste circular economy. As the dissolution of carbon into iron is a key step in the manufacture of iron-carbon alloys, the feasibility of utilizing the waste polymers within ASR as sources of carbon in different areas of pyrometallurgical processing was investigated. Polypropylene and rubber, in a blend with metallurgical coke, were used as carbonaceous substrates and the slag-foaming phenomenon was investigated via the sessile drop technique in an argon environment at 1,550°C. The results indicated the rubber/coke blend achieved significantly better foaming behaviour, and the PP/coke blend exhibited a moderate improvement in slag foaming, in comparison to 100% metallurgical coke. The overall results indicated the incorporation of ASR had significant improvement in foaminess behaviour, increasing furnace efficiency.

Details

Unmaking Waste in Production and Consumption: Towards the Circular Economy
Type: Book
ISBN: 978-1-78714-620-4

Keywords

Article
Publication date: 1 February 2008

Rupak Rauniar, William Doll, Greg Rawski and Paul Hong

This paper seeks to empirically investigate how a heavyweight product manager (HW) can impact the cross‐functional team and project performance (PP) through actively influencing…

3890

Abstract

Purpose

This paper seeks to empirically investigate how a heavyweight product manager (HW) can impact the cross‐functional team and project performance (PP) through actively influencing the ways and the extent of strategic alignment (SA), shared project mission, and clarity of project targets in the early front‐end stage.

Design/methodology/approach

Based on past studies on leadership role theory and goal‐setting theory for teams, this study hypothesizes that the role of the HW for SA of the project, shared project mission, and clarity of the project target are positively related. The study further hypothesizes that these roles of the HW can have a positive impact on PP measures such as product cost, time, and customer satisfaction.

Findings

Primary data collected from 191 new product development (NPD) projects from the US automotive industry were analyzed using structural equation modeling techniques. All the hypotheses presented in this study regarding the role of the HW in a cross‐functional team are supported. These roles of the HW also seem to indicate a positive relationship with overall PP.

Practical implications

Rather than blindly subscribing to generic and prescriptive “best practices” for the HW, the causal relationship detailed in this study makes it now possible to rationalize the role of HW in cross‐functional product development teams. Through formal and informal influence of the HW, the project and the team gain SA, shared mission, and clear project targets that can drive better PP.

Originality/value

This is the first study to focus specifically on the role of HW in NPD in a cross‐functional team environment.

Details

International Journal of Operations & Production Management, vol. 28 no. 2
Type: Research Article
ISSN: 0144-3577

Keywords

Article
Publication date: 2 April 2024

Muhammad Sabbir Rahman, Md Afnan Hossain, Md Rifayat Islam Rushan, Hasliza Hassan and Vishal Talwar

The mental healthcare is experiencing an ever-growing surge in understanding the consumer (e.g., patient) engagement paradox, aiming to vouch for the quality of care. Despite this…

Abstract

Purpose

The mental healthcare is experiencing an ever-growing surge in understanding the consumer (e.g., patient) engagement paradox, aiming to vouch for the quality of care. Despite this surge, scant attention has been given in academia to conceptualize and empirically investigate this particular aspect. Thus, drawing on the Stimulus-Organism-Response (S-O-R) paradigm, the study explores how patients engage with healthcare service providers and how they perceive the quality of the healthcare services.

Design/methodology/approach

Data were collected from 279 respondents, and the derived conceptual model was tested by using Smart PLS 3.2.7 and PROCESS. To complement the findings of partial least squares (PLS)-based structural equation modeling (SEM), the present study also applied fuzzy set qualitative comparative analysis (fsQCA) to identify the necessary and sufficient conditions to explore substitute conjunctive paths that emerge.

Findings

Findings show that patients’ perceived intimacy (PI), cohesion and privacy enhance the quality of mental healthcare service providers. The results also suggest that patients’ PI, cohesion and privacy have indirect effects on the perceived quality of care (PQC) by the service providers through consumer engagement. The fsQCA results derive that the relationship among conditions leading to patients’ perception of the quality of care in regard to mental healthcare service providers is complex and is best reflected as multiple and conjectural causation configurations.

Research limitations/implications

The findings from this research contribute to the advancement of studies on patients’ experiences by empirically examining the unique dynamics of interaction between consumers (patients) and mental healthcare service providers, thereby enriching both the literature on social interactions and the understanding of the consumer–provider relationship.

Practical implications

The results of this study provide practical implications for mental healthcare service providers on how to combine the study variables to enhance the quality of care and satisfy more patients.

Originality/value

A significant research gap has ascertained the inter-relationship between PI, cohesion, privacy, engagement and PQC from the perspective of mental healthcare service providers. This research is one of the primary studies from a managerial and methodological standpoint. The study contributes by combining symmetric and asymmetric statistical tools in service marketing and healthcare research. Furthermore, the application of fsQCA helps to understand the interactions that might not be immediately obvious through traditional symmetric methods.

Details

International Journal of Quality & Reliability Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 2 May 2017

Sabita Mahapatra

The purpose of this paper is to examine the effect of patient participation on patient satisfaction and the subsequent effect on patient behavior outcomes

Abstract

Purpose

The purpose of this paper is to examine the effect of patient participation on patient satisfaction and the subsequent effect on patient behavior outcomes

Design/methodology/approach

The research employs self-administered survey method to test hypotheses. The convenience sampling approach is used to collected data from 410 patients in metropolitan cities of India. The data are analyzed using SmartPLS to test the proposed model.

Findings

The results shows patient participation is positively related to behaviour outcomes and patient confidence and satisfaction mediate the effect of patient participation on adherence.

Research limitations/implications

The study was limited to a small sample which may somewhat limit generalization of the findings. However, the findings, based on primary data, are insightful. Second, the current study was cross-sectional in nature, whereas a longitudinal study could had measured changes in perceptions over an extended time period.

Practical implications

The results provide interesting insights about the significance of patient participation in positive behavior outcome. These insights will enable health care professionals and government to formulate a suitable policy through which to encourage patient participation in health treatment regimes.

Originality/value

The paper demonstrates the influence of patient participation on behavior. There has been little research on this aspect in the Indian context to date, so this study offers an important guideline to the health care industry in relation to introducing customer empowerment into health care regimes.

Details

Benchmarking: An International Journal, vol. 24 no. 4
Type: Research Article
ISSN: 1463-5771

Keywords

Article
Publication date: 6 December 2017

Sunghan Ryu and Byungho Park

The purpose of this study is to understand the nature and characteristics of legal movie download services and to explore the factors that influence user acceptance of the…

Abstract

Purpose

The purpose of this study is to understand the nature and characteristics of legal movie download services and to explore the factors that influence user acceptance of the services.

Design/methodology/approach

The authors analyzed the three aspects (i.e. hedonic information systems, ethical and legal consideration and user characteristics) of legal movie download services and empirically examined how they affect the potential users’ behavioral intent to adopt the services based on the theory of reasoned action (TRA). An online survey of 142 respondents about a real legal movie download services, currently operated by a major online service provider, was conducted.

Findings

Perceived playfulness and perceived usefulness had statistically significant effects on attitude. The relationships between subjective norms and its influencers are validated for moral judgment as well as risk aversion. The influence of price consciousness and past experience on behavioral intent to adopt the service are both supported. In the TRA model, attitude and subjective norms had statistically significant influence on behavioral intent to adopt the services.

Originality/value

The authors contribute to extending the literature on online pirating behavior from the different perspective, i.e. adoption of new legal alternatives. The study shows that the specific boundary conditions, i.e. hedonic attribute of information systems and existence of illegal alternatives, would generate the different results from the theories and previous literature.

Details

Journal of Information, Communication and Ethics in Society, vol. 16 no. 1
Type: Research Article
ISSN: 1477-996X

Keywords

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