Search results

1 – 10 of 33
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 10 January 2023

Neha Choudhary, Chandrachur Ghosh, Varun Sharma, Partha Roy and Pradeep Kumar

The purpose of this paper is to fabricate the scaffolds with different pore architectures using additive manufacturing and analyze its mechanical and biological properties for…

707

Abstract

Purpose

The purpose of this paper is to fabricate the scaffolds with different pore architectures using additive manufacturing and analyze its mechanical and biological properties for bone tissue engineering applications.

Design/methodology/approach

The polylactic acid (PLA)/composite filament were fabricated through single screw extrusion and scaffolds were printed with four different pore architectures, i.e. circle, square, triangle and parallelogram with fused deposition modelling. Afterwards, scaffolds were coated with hydroxyapatite (HA) using dip coating technique. Various physical and thermo-mechanical tests have been conducted to confirm the feasibility. Furthermore, the biological tests were conducted with MG63 fibroblast cell lines to investigate the biocompatibility of the developed scaffolds.

Findings

The scaffolds were successfully printed with different pore architectures. The pore size of the scaffolds was found to be nearly 1,500 µm, and porosity varied between 53% and 63%. The fabricated circular pore architecture resulted in highest average compression strength of 13.7 MPa and modulus of 525 MPa. The characterizations showed the fidelity of the work. After seven days of cell culture, it was observed that the developed composites were non-toxic and supported cellular activities. The coating of HA made the scaffolds bioactive, showing higher wettability, degradation and high cellular responses.

Originality/value

The research attempts highlight the development of novel biodegradable and biocompatible polymer (PLA)/bioactive ceramic (Al2O3) composite for additive manufacturing with application in the tissue engineering field.

Details

Rapid Prototyping Journal, vol. 29 no. 5
Type: Research Article
ISSN: 1355-2546

Keywords

Access Restricted. View access options
Article
Publication date: 7 May 2020

Partha Sarathi Roy and Paromita Goswami

The purpose of this paper is to argue for an integrative model of social enterprises (SE) and social marketing (SM) to usher in desirable change, instead of the currently adopted…

750

Abstract

Purpose

The purpose of this paper is to argue for an integrative model of social enterprises (SE) and social marketing (SM) to usher in desirable change, instead of the currently adopted either/or approach. We offer the shadow framework to integrate these two paradigms in the context of peace-building organizations.

Design/methodology/approach

Using purposive sampling strategy, 19 cases of peacebuilding initiatives were identified and reviewed from secondary sources. Ashoka Fellows working in the domain of peacebuilding, along with a few other exemplary cases across the globe were considered.

Findings

We found an emerging typology of three forms in the organizational responses to peacebuilding initiatives: (a) pure charity-driven work, (b) dual structure of charity plus business enterprises, and (c) social enterprises with distinct revenue model.

Research limitations/implications

Building upon previous theoretical research, we find a lot of merit in SEs adopting the SM toolkit. We contribute to theory building by showing the interaction between paradox theory and stakeholder marketing in the context of SEs dealing with wicked problems such as peacebuilding. Consequently, we propose a shadow social marketing (SSM) model that would camouflage the real offering of peace through an apparent offering that would be non-controversial in nature and result in moderate-importance small wins for the multiple stakeholders involved with conflicting interests.

Practical implications

From a managerial perspective, chances of success of the desired social change increases by complementing the efforts of SEs through the SM toolkit. Organizationally, although all the three forms of peacebuilding initiatives can benefit from systematic usage of the SSM, they need to reframe their efforts toward those that are not pro-peace, rather than preach to the converted. Consequently, the answer may lie in efforts at building cultural sensitivity to promote entrepreneurship amongst such target groups amongst such target groups in conflicting communities, with an organizational form that successfully marries SEs and SM.

Originality/value

Though previous scholarship mentions the need for finding complementarities between social marketing objectives and social enterprise missions, no paper yet has suggested a roadmap for achieving it. This paper highlights an integrative plan that, in this specific case of peacebuilding initiatives, or social enterprises in general, can leverage to evolve better organizational practices, improve financial sustainability and measurable impact to effect the desired social change.

Access Restricted. View access options
Book part
Publication date: 5 November 2021

Partha Sarathi Roy and Shekhar Chaudhuri

Access to pure drinking water is considered as a basic human right and part of the United Nations' Sustainable Development Goals. India ranks poorly in terms of providing…

Abstract

Access to pure drinking water is considered as a basic human right and part of the United Nations' Sustainable Development Goals. India ranks poorly in terms of providing universal coverage of potable water to its citizens. This case highlights the challenges faced by the private sector in providing purified drinking water for a diverse country like India with many geographical regions (and their corresponding water impurities) and differing levels of economic prosperity (making sustainability tougher for private companies) by focusing on Waterlife India Private Limited (WLIP). WLIP is a for-profit social enterprise that sells drinking water in rural hinterlands and urban slums at a very affordable price of US$0.006 per liter. Since its inception in 2008, WLIP has evolved to become a major player in the fragmented Indian affordable drinking water industry. Sustainability of the WLIP business model is based on a unique public–private partnership template in which three parties come together—a corporate sponsor who bears the cost of the water filtration equipment; community governance bodies like panchayats or municipalities, which give a sense of operational legitimacy to the model; and WLIP as the driving force of the network. This business model is unique for three reasons: suitable incentive mechanisms with proper alignment of interests among various stakeholders; optimization of the water-filtration plant equipment to community demand; and achieving the delicate balance between standardization of processes and customization in offerings to the operating context. Alignment of partner interest is the principal differentiator that also ensures accountability and impact.

Details

Institutional Interconnections and Cross-Boundary Cooperation in Inclusive Business
Type: Book
ISBN: 978-1-80117-213-4

Keywords

Available. Content available
Book part
Publication date: 5 November 2021

Abstract

Details

Institutional Interconnections and Cross-Boundary Cooperation in Inclusive Business
Type: Book
ISBN: 978-1-80117-213-4

Access Restricted. View access options
Article
Publication date: 26 April 2011

Partha Priya Datta and Rajkumar Roy

As enterprises focus on offering integrated product/service bundles, performance‐based contracts become ever so important in ensuring effective delivery. Performance‐based…

7334

Abstract

Purpose

As enterprises focus on offering integrated product/service bundles, performance‐based contracts become ever so important in ensuring effective delivery. Performance‐based contracts fall under the result‐oriented category of industrial product service systems (PSSs). The paper aims to present a conceptual framework for operations strategy in performance‐based industrial PSSs that will help manufacturing companies configure their operations to support effective delivery of integrated product/service offering.

Design/methodology/approach

This paper first develops a conceptual framework for operations strategy in performance‐based contracts by identifying the key elements after a detailed systematic review of literature. A major shift in support and maintenance logistics for complex engineering systems over the past few years has been observed in the defence and aerospace industries. Availability contracting, a special type of performance‐based contracts, is replacing traditional service procurement practices. Two exploratory case studies involving defence availability contracts are conducted for making inferences regarding the operations strategy.

Findings

The important findings of this research are a set of elements of operations strategy guiding the development of a conceptual framework, a set of operating principles and processes supporting effective delivery of performance‐based service contracts.

Originality/value

The true value of this research is to open up the novel area of result‐oriented industrial PSSs operations strategy by capturing the key characteristics of operations using both literature and empirical evidence.

Details

International Journal of Operations & Production Management, vol. 31 no. 5
Type: Research Article
ISSN: 0144-3577

Keywords

Available. Content available
Book part
Publication date: 8 June 2021

Free Access. Free Access

Abstract

Details

Comparative Advantage in the Knowledge Economy
Type: Book
ISBN: 978-1-80071-040-5

Access Restricted. View access options
Article
Publication date: 8 January 2025

Saikat Chatterjee, Partha Protim Das and Shankar Chakraborty

In electrical discharge machining (EDM) process, EDM oil used as a dielectric fluid plays an important role in determining quality of the machining operation, serving as a medium…

14

Abstract

Purpose

In electrical discharge machining (EDM) process, EDM oil used as a dielectric fluid plays an important role in determining quality of the machining operation, serving as a medium to generate controlled electrical discharges, quenching medium to cool down and solidify the eroded gaseous particles, removal of solidified waste, and lubrication medium to absorb and remove the heat generated at the machining zone. Due to presence of numerous decisive factors, no single dielectric fluid (mainly in the form of EDM oil) meets all the required characteristics during a real-time EDM operation. Thus, this paper proposes application of an integrated methodology to select the most appropriate EDM oil for enhanced machining performance during deep-hole drilling of aluminum bronze alloy.

Design/methodology/approach

A good dielectric fluid should possess several characteristics, like low cost, non-toxicity, low viscosity, good wetting property, high flash and fire points to avoid fire hazards, chemically non-corrosive, high electric strength and specific gravity, minimal aromatics and good quenching behavior. In this paper, performance of 10 alternative EDM oils is evaluated based on six selection criteria. Integrated determination of objective criteria weights (IDOCRIW) method is adopted to compute the criteria weights, whereas double normalization-based multiple aggregation (DNMA) approach is applied to identify the best-suited EDM oil from the candidate alternatives.

Findings

Spark SPO-A EDM oil appears as the most suitable dielectric fluid, followed by Fine Spark 110. Contrarily, Exxsol D80 emerges as the worst choice.

Originality/value

The robustness of the adopted methodology is finally validated through sensitivity analysis studies. It can thus be applied to solve any of the decision-making problems with high degree of accuracy and consistency.

Details

Multidiscipline Modeling in Materials and Structures, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1573-6105

Keywords

Available. Content available
Book part
Publication date: 26 November 2019

Free Access. Free Access

Abstract

Details

The Gains and Pains of Financial Integration and Trade Liberalization
Type: Book
ISBN: 978-1-83867-004-7

Available. Content available
Book part
Publication date: 3 June 2021

Free Access. Free Access

Abstract

Details

Productivity Growth in the Manufacturing Sector
Type: Book
ISBN: 978-1-80071-094-8

Access Restricted. View access options
Article
Publication date: 11 October 2018

Prabhugouda Mallanagouda Patil, Shashikant A. and Ebrahim Momoniat

This paper aims to investigate the unsteady mixed convection along an exponentially stretching surface in presence of transverse magnetic field applied at the wall and the…

117

Abstract

Purpose

This paper aims to investigate the unsteady mixed convection along an exponentially stretching surface in presence of transverse magnetic field applied at the wall and the opposing buoyancy flow.

Design/methodology/approach

The dimensional partial differential equations governing the flow field are transformed to non-dimensional coupled partial differential equations with the aid of suitable non-similar transformations. The resulting equations are then solved by the coalition of quasilinearization technique and the finite difference method.

Findings

Effects of volumetric heat source/sink, suction/blowing and other dimensionless parameters on velocity and temperature profiles are examined numerically. This investigation reveals that in presence of opposing buoyancy flow, the suction and volumetric heat source enhances the skin-friction coefficient, while the rise in the MHD increases the momentum boundary layer.

Originality/value

To the best of the authors’ knowledge, no such investigation has been carried out in the literature.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 28 no. 12
Type: Research Article
ISSN: 0961-5539

Keywords

1 – 10 of 33
Per page
102050