Search results

11 – 20 of over 4000
Article
Publication date: 6 October 2020

Piyush Gupta, Piyush Pranjal, Sasadhar Bera, Soumya Sarkar and Amit Sachan

Considerable amount of purchases in business-to-business (B2B) markets make through the tendering process. As technology keeps driving B2B procurement, both the…

Abstract

Purpose

Considerable amount of purchases in business-to-business (B2B) markets make through the tendering process. As technology keeps driving B2B procurement, both the supplier/contractor and buyer firms have settled down in their respective roles in the electronic-tendering environment. Researchers have ignored the supplier-side e-tender-driven marketing process that might lead to substantively successful financial performance. The purpose of this study is to improve the performance of an e-tender-driven marketing process of an original equipment manufacturer (OEM) incorporating the stakeholder's inputs.

Design/methodology/approach

Discrete event simulation modelling (DESM) has been used as a methodology to model, analyse and improve the process with the involvement of stakeholders at every stage of the study. Different scenarios are analysed to identify the near-optimal scenario based on agreed-upon key performance indicators.

Findings

Scenario that incorporated man-power sharing and eliminating avoidable activities gives the near-optimal solution for implementation.

Research limitations/implications

This study highlights that better insights can be gained by adopting the process-oriented view of the marketing–operations interface. Embracing a stakeholder-based consultative approach gives research a more practical outlook and reduces the gap between theory and practice. Suggestions for further research are provided.

Practical implications

B2B organizations, where lines between marketing and operations are blurred, can improve their marketing processes by implementing operations research tools.

Originality/value

This study provides an attempt to improve the performance of a supplier-side e-tender-driven marketing process of an OEM using the DESM methodology incorporating stakeholder's inputs.

Details

International Journal of Productivity and Performance Management, vol. 70 no. 8
Type: Research Article
ISSN: 1741-0401

Keywords

Article
Publication date: 24 August 2012

Sohail Inayatullah

Based on a report to the non‐profit organization, The Foundation for the Future, this article aims to review methodological approaches to forecasting the long‐term future.

Abstract

Purpose

Based on a report to the non‐profit organization, The Foundation for the Future, this article aims to review methodological approaches to forecasting the long‐term future.

Design/methodology/approach

This is not an analysis of the particular content of the next 500 or 1,000 years but a comparative analysis of methodologies and epistemological approaches best utilized in long‐range foresight work. It involves an analysis of multiple methods to understand long‐range foresight; literature review; and critical theory.

Findings

Methodologies that forecast the long‐term future are likely to be more rewarding – in terms of quality, insight, and validity – if they are eclectic and layered, go back in time as far as they go in the future, that contextualize critical factors and long‐term projections through a nuanced reading of macrohistory, and focus on epistemic change, the ruptures that reorder how we know the world.

Research limitations/implications

The article provides frameworks to study the long‐range future. It gives advice on how best to design research projects that are focused on the long‐term. Limitations include: no quantitative studies were used and the approach while epistemologically sensitive remains bounded by Western frameworks of knowledge.

Practical implications

The article provides methodological and epistemological guidance as to the best methods for long range foresight. It overviews strengths and weaknesses of various approaches.

Originality/value

This is the only research project to analyze methodological aspects of 500‐1,000 year forecasting. It includes conventional technocratic views of the future as well as Indic and feminist perspectives. It is among the few studies to link macrohistory and epistemic analysis to study the long‐term.

Article
Publication date: 9 December 2020

S. Das, S. Sarkar and R.N. Jana

To amend the efficiency of engineering processes and electronic devices, it is very urgent to assess the irreversibility in the term entropy generation (EG). The efficiency of…

Abstract

Purpose

To amend the efficiency of engineering processes and electronic devices, it is very urgent to assess the irreversibility in the term entropy generation (EG). The efficiency of energy transportation in a system can be improved by minimization of the rate of EG. In this context, the aim of the present study is to estimate irreversible losses of an unsteady magnetohydrodynamic (MHD) flow of a viscous incompressible electrically conducting non-Newtonian molybdenum disulfide-polyethylene glycol Casson nanofluid past a moving vertical plate with slip condition under the influence of Hall current, thermal radiation, internal heat generation/absorption and first-order chemical reaction. Molybdenum disulfide (MoS2) nanoparticles are dispersed in the base fluid polyethylene glycol (PEG) to make Casson nanofluid. Casson fluid model is considered to characterize the rheology of the non-Newtonian fluid, whereas Rosseland approximation is adopted to simulate the thermal radiative heat flux in the energy equation.

Design/methodology/approach

The closed-form solutions are obtained for the model equations by using the Laplace transform method (LTM). Graphs and tables are prepared to examine the impact of pertinent flow parameters on the pertinent flow characteristics. The energy efficiency of the system via the Bejan number is studied extensively.

Findings

Analysis reveals that Hall current has diminishing behavior on entropy production of the thermal system. Strengthening of the magnetic field declines the velocity components and prop-ups the rate of EG. Adding nanoparticles into the base fluid reduces the EG, whereas there are an optimum volume fraction of nanoparticles for which the EG is minimized. Further, the rate of decay of EG is prominent in molybdenum disulfide-polyethylene glycol in comparison to PEG.

Practical implications

The results of this study would benefit the industrial sector in achieving the maximum heat transfer at the cost of minimum irreversibilities with an optimal choice of embedded thermophysical parameters. In view of this agenda, this study would be adjuvant in powder technology, polymer dynamics, metallurgical process, manufacturing dynamics of nano-polymers, petroleum industries, chemical industries, magnetic field control of material processing, synthesis of smart polymers, etc.

Originality/value

The novelty of this study is to encompass the analytical solution by using the LTM. Such an exact solution of non-Newtonian fluid flow is rare in the literature. Limited research articles are available in the field of EG analysis during the flow of non-Newtonian nanoliquid subject to a strong magnetic field.

Article
Publication date: 19 May 2020

Nadia Mans-Kemp, Suzette Viviers and Jenna Weir

Directors can become overextended when they serve on multiple boards simultaneously. Previous scholars mostly considered directorships held at listed companies. This study aims to…

Abstract

Purpose

Directors can become overextended when they serve on multiple boards simultaneously. Previous scholars mostly considered directorships held at listed companies. This study aims to investigate the extent and impact of director overboardedness in an emerging market by using a comprehensive measure.

Design/methodology/approach

The analysis covered 1,600 directors who served on the boards of the 100 largest companies listed in South Africa over the period 2011–2016. In addition to directorships held at listed companies, board positions at unlisted companies and other entities such as state-owned enterprises were considered. Board committee memberships at the sample companies were furthermore included. Random effects ANOVA was conducted to test for significant differences in board and committee meeting attendance.

Findings

Two-thirds of the considered directors were overboarded when accounting for all their positions. Board committee memberships increased notably over the research period. There was no significant difference in the percentage of board meetings attended between overboarded and non-overboarded directors. However, those directors who held three or more positions simultaneously attended significantly more board committee meetings than their counterparts who held fewer positions. Of the considered committees, the remuneration committee typically had the highest proportion of overboarded directors.

Originality/value

Eligible board candidates are in high demand given the limited talent pool in South Africa. The findings contradict the busyness hypothesis and suggest that director overboardedness should be evaluated on a case-by-case basis.

Details

Corporate Governance: The International Journal of Business in Society, vol. 20 no. 5
Type: Research Article
ISSN: 1472-0701

Keywords

Article
Publication date: 21 October 2013

S. Sarkar

Increased evidence for the health benefits of probiotics for health restoration coupled with the consumer's inclination towards a safe, natural and cost-effective substitute for…

Abstract

Purpose

Increased evidence for the health benefits of probiotics for health restoration coupled with the consumer's inclination towards a safe, natural and cost-effective substitute for drugs have led application of probiotics as a pharmaceutical agent and are rapidly moving in clinical usage. In this context, this article attempts to highlight the potential of probiotics as a pharmaceutical agent.

Design/methodology/approach

Endeavor has been made to explore the significance of probiotics for the modulation of gut ecology and their action. Potentiality of probiotics for their exploitation as a pharmaceutical agent has also been justified. Limitations of probiotic therapy and the various considerations for probiotic therapy have also been delineated.

Findings

Probiotic organisms influence the physiological and pathological process of the host by modifying the intestinal microbiota, thereby affecting human health. Beneficial effects of probiotics as a pharmaceutical agent seem to be strain and dose dependent and more efficacious with their early introduction. Combination of various probiotics proved to be more efficacious than single strain for exhibiting prophylactic activities.

Research limitations/implications

Reviewed literature indicated that it is difficult to generalize for the beneficial effect of all probiotics for all types of diseases as efficacy of probiotics is strain-dependent and dose-dependent and its clinical application needs long-term investigations.

Practical implications

Clinical trials have displayed that probiotics may alleviate certain disorders or diseases in humans especially those related to gastro-intestinal tract.

Originality/value

Ingestion of fermented dairy products containing probiotic cultures may provide health benefits in certain clinical conditions such as antibiotic-associated diarrhoea, rotavirus-associated diarrhoea, inflammatory bowel disease, inflammatory bowel syndrome, allergenic diseases, cancer, Helicobacter pylori infection and lactose-intolerance. Application of probiotics as a pharmaceutical agent is recommended.

Details

British Food Journal, vol. 115 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 12 March 2018

S. Sarkar

Consumer inclination towards probiotic foods has been stimulated due to well-documented evidence of health benefits of probiotic-containing products and consumer demand for…

Abstract

Purpose

Consumer inclination towards probiotic foods has been stimulated due to well-documented evidence of health benefits of probiotic-containing products and consumer demand for natural products. It is assumed that the viability and metabolic activities of probiotics are essential for extending health benefits and for successful marketing of probiotics as a functional food. The purpose of this paper is to demonstrate that even dead or inactivated probiotic cells could extend health benefits, indicating that probiotic viability is not always necessary for exhibiting health benefits.

Design/methodology/approach

Attempt has been made to review the literature on the status of probiotic foods available in the world market, their impact on the gut flora and the various factors affecting their viability. Both review and research papers related to efficacy of inactivated, killed or dead probiotic cells towards health benefits have been considered. Keywords used for data search included efficacy of viable or killed, inactivated probiotic cells.

Findings

The reviewed literature indicated that inactivated, killed or dead probiotic cells also possess functional properties but live cells are more efficacious. All live probiotic cultures are not equally efficacious, and accordingly, dead or inactivated cells did not demonstrate functional properties to extend health benefits to all diseases.

Originality/value

Capability of non-viable microorganisms to confer health benefits may attract food manufacturers owing to certain advantages over live probiotics such as longer shelf-life, handling and transportation and reduced requirements for refrigerated storage and inclusion of non-bacterial, biologically active metabolites present in fermented milks’ fraction as dried powders to food matrixes may result in the development of new functional foods.

Details

Nutrition & Food Science, vol. 48 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 19 March 2020

Jitendra Kumar Singh, Gauri Shenkar Seth, Ghousia Begum and Vishwanath S.

In the present investigation, hydromagnetic boundary layer flow of Walters’-B fluid over a vertical porous surface implanted in a porous material under the action of a strong…

Abstract

Purpose

In the present investigation, hydromagnetic boundary layer flow of Walters’-B fluid over a vertical porous surface implanted in a porous material under the action of a strong external applied magnetic field and rotation is presented. In several industrial applications, the external applied magnetic field is strong enough to produce Hall and ion-slip currents. Thus, the influence of Hall and ion-slip currents is also considered in this analysis. The flow through configuration is generated because of time varying motion of the free-stream and buoyancy action.

Design/methodology/approach

Regular perturbation scheme is used to obtain the solution of the system of coupled partial differential equations representing the mathematical model of the problem. Numerical computation has been performed to notice the change in flow behavior and the numerical results for velocity field, temperature field, species concentration, skin friction, rate of heat and mass transfer are presented through graphs and tables.

Findings

An important fact noticed that the exponential time varying motion of the free-stream induces reverse flow in the direction perpendicular to the main flow. Rising values of the strength of the applied magnetic field give increment in the fluid velocity in the neighbourhood of the vertical surface, this may cause because of the exponential motion of the free-stream. The behaviour of the Darcian drag force is similar as magnetic field on fluid flow.

Originality/value

In literature, very less research works are available on Walters’-B fluid where unsteadiness in the system occurs because of time varying motion of the free-stream. In this paper, the authors have made an attempt to study the action of Hall and ion-slip currents, rotation and external applied magnetic field on hydromagnetic boundary layer flow of Walters’-B fluid over a vertical surface implanted in a porous material.

Details

World Journal of Engineering, vol. 17 no. 2
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 1 September 2006

S. Sarkar

The purpose of this paper is to enlighten the prophylactic aspect of cultured milk products, which render it suitable for lactose‐intolerant subjects.

868

Abstract

Purpose

The purpose of this paper is to enlighten the prophylactic aspect of cultured milk products, which render it suitable for lactose‐intolerant subjects.

Design/methodology/approach

The paper outlines the significance of lactase enzyme and the mechanism of lactase digestion. This is followed by a discussion of lactase activities in starter cultures and cultured milk products for lactose‐intolerant participants. Factors affecting lactase activity are described.

Findings

Starter cultures possess the enzyme β‐galactosidase, required for lactose hydrolysis and their application led to the development of a number of cultured milk products, which are more easily digestible than milk by lactose‐intolerant individuals. Reasons attributable for better digestion of cultured milk products than milk are reduction in lactose content, increase in microbial lactase enzyme, stimulation of host's mucosal lactase activity and slower transit of cultured milk products as compared to milk.

Originality/value

Consumption of cultured milk products by lactose‐intolerant recipients is suggested.

Details

Nutrition & Food Science, vol. 36 no. 5
Type: Research Article
ISSN: 0034-6659

Keywords

Book part
Publication date: 7 August 2013

Sujata Patel

This chapter shifts contemporary debates on Eurocentrism from its focus on European social theory to an analysis of its moorings in non-Atlantic sociological traditions and…

Abstract

This chapter shifts contemporary debates on Eurocentrism from its focus on European social theory to an analysis of its moorings in non-Atlantic sociological traditions and especially those within ex-colonial countries. It discusses the sociological/anthropological visions of two first generation sociologists/anthropologists from India, G. S. Ghurye (1893–1983) and D. P. Mukerji (1894–1961), within Orientalist-Eurocentric positions and explores how these are reinvented in the work of contemporary sociologist T. N. Madan (1933–). It suggests that colonial processes and its institutions together with “derivative” nationalist ideas have played and continue to play important mediatory role in organizing these Orientalist-Eurocentric visions.

The chapter presents three sets of arguments. First it suggests that in order to understand postcolonialism it is imperative to lay out the organic links between Orientalism and Eurocentrism. Eurocentrism and its mirror Orientalism mediated to frame social science language in terms of the binaries of universal (the West) and particular (the East). The particular was represented in India through the discipline of anthropology. The latter studied “traditions” through the themes of religion, caste, and family and kinship. When sociology emerged as a discipline in India in the early twentieth century, it continued to use the language organized by anthropology to analyze the particular cultural traditions of the country. Second, I suggest that these binaries also framed nationalist thought and the latter mediated in framing the sociological ideas of G. S. Ghurye and D. P. Mukerji which were embedded in Eurocentric-Orientalist principles. Third, I analyze the ideas of the contemporary social theorist T. N. Madan to indicate how his perspective continues to derive its positions from Orientalist-Eurocentric positions and ignores an engagement with critics who have questioned Orientalist Eurocentrism. Disregarding these arguments implies the legitimation of the latter perspective derived from the disciplines of sociology/anthropology.

The chapter contends that a decolonized critique of colonial social science has existed in other regions of the world including India, and that this perspective needs to be retrieved by social theorists to reformulate the sociological discourse as a study of modern India. It also suggests that contemporary analysis of Eurocentrism needs to move out from within the circuits of knowledge defined by received colonial geopolitical enclaves in order to assess the way production, distribution, and consumption of Orientalist-Eurocentric perspectives have organized sociological traditions across the world including the Global South.

Details

Decentering Social Theory
Type: Book
ISBN: 978-1-78190-727-6

Article
Publication date: 19 June 2007

S. Sarkar

This article seeks to review the incidence of food allergy or food sensitization in children which has increased during the past decade and can manifest urticaria or angioedema…

694

Abstract

Purpose

This article seeks to review the incidence of food allergy or food sensitization in children which has increased during the past decade and can manifest urticaria or angioedema, anaphylaxis, atopic dermatitis, respiratory symptoms or gastro‐intestinal disorders, and to looks closely at probiotic therapy, which appears to alleviate allergy inflammation.

Design/methodology/approach

Literature related to probiotics and their exploitation as probiotic therapy for gastro‐intestinal allergenic infants has been primarily composed from two databases, namely, Dairy Science Abstracts and Entez Pub Med.

Findings

Development of intestinal microbiota is considered to be a consequential factor affecting the health of newborns and could be achieved by nutritional change in diet or by consumption of probiotic through fermented milks. Animal and human trials revealed that probiotics can affect host‐resistance to intestinal infection as well as various immune functions and alleviate intestinal inflammation, normalize gut mucosal dysfunction and down‐regulate hypersensitivity reaction. Mode of action of probiotics is mediated by the microbial composition as well as metabolic activity of the intestinal flora. Beneficial properties of probiotics suggest their application for probiotic therapy of food‐allergenic infants.

Originality/value

Ingestion of fermented milk products containing probiotic cultures may provide health benefits in terms of colonization and normalization of intestinal flora, thereby alleviating food allergenicity in infants.

Details

British Food Journal, vol. 109 no. 6
Type: Research Article
ISSN: 0007-070X

Keywords

11 – 20 of over 4000