Mahendra Pratap, Anil Kumar Agrawal, Subhash Chandra Sati and Arun Kumar Saxena
The purpose of this paper is to improve the design of a solid square canopy of a parachute. The design improvements are brought out by providing minor slits in the canopy area…
Abstract
Purpose
The purpose of this paper is to improve the design of a solid square canopy of a parachute. The design improvements are brought out by providing minor slits in the canopy area. Proper designing of the parachute was carried out using theoretical investigation coupled with experimentation. This parachute is designed for launch of sonobuoy from fixed wing aircraft.
Design/methodology/approach
Literature review was carried out on the design of such parachutes for the launch of a sonobuoy from a high altitude to the water entry. Computational fluid dynamics (CFD) analysis provided the value of the coefficient of drag for the slit-cut square canopy parachute, with and without sonobuoy for different lengths of the slit. Besides the theoretical investigation, experimentation was also carried out to validate the design.
Findings
The experimentation was carried out on 58 and 75 gsm fabric canopies with the slit edge plain-cut with thermally sealed edges, stitched and strengthened. In the case of plain-cut slits on the canopy made of 75 gsm fabric, no tearing of the slit edge was observed in dynamic and flight tests.
Research limitations/implications
The present work has been carried out considering various assumptions and limited trial data specific to precision drop of 9 kg payload. The work can be adopted for bigger parachute for dropping of higher payloads.
Originality/value
Lab strength test, track dynamic and flight trials were conducted to acquire useful data for the present analysis. Besides the theoretical investigations and CFD analysis inherently based on numerous assumptions, experimentation was carried out as the sonobuoy deployment conditions are full of uncertainty. Dynamic and airdrop tests were conducted for this reason to determine design changes in the slits, both at the material level and on improvisations.
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Anil Kumar Agrawal, Mahendra Pratap, Subhash Chandra Sati and Rajeev Kumar Upadhyay
The purpose of this paper is to optimize the design of a hybrid tether using probabilistic approach considering inherent random variation in the stress developed and the strength…
Abstract
Purpose
The purpose of this paper is to optimize the design of a hybrid tether using probabilistic approach considering inherent random variation in the stress developed and the strength it has. The variation in strength is mostly because of variation in diameter of the tether and the properties of the material along the length of the tether. As a result, classical design approach for the tether may not serve the purpose. For this purpose, a reliability-based design of hybrid tether is discussed in this paper.
Design/methodology/approach
A literature review was carried out on the design of tether and its operational reliability. It has been shown that the classical design approach does not serve the purpose, as the strategic operation has to be reliable enough, often requiring a measure of reliability required. A reliability-based approach has been presented to achieve the optimum design of a hybrid tether.
Findings
The optimization problem was carried out for different values of the safety factor to investigate the effect on the optimal design of tether. An analysis is carried out to show that one should not target a very high value of reliability or factor of safety, as it causes the self-weight of the tether to increase tremendously and its cost significantly.
Research limitations/implications
The present work has been carried out considering the limited data and can further be extended to determine more accurate reliability measures by considering more number of sample test data. The measured data is collected from limited required trials for demo; do not represent the exact population data.
Originality/value
Lab strength test and flight trials were conducted to acquire data for the present analysis. In field use, it was noticed that the tether degraded from top portion attached toward the balloon end because of maximum exposure and repeated usage.
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Harish Babu, Prabhas Bhardwaj and Anil K. Agrawal
In the Indian manufacturing SMEs context, supply chains have a complex structure having multiple echelons, multiple partners and multiple locations. Due to these complexities…
Abstract
Purpose
In the Indian manufacturing SMEs context, supply chains have a complex structure having multiple echelons, multiple partners and multiple locations. Due to these complexities, most of the Indian manufacturing SMEs face several types of supply chain risks. This paper aims to identify the dominant risk variables and to develop the interrelationship among these risk variables.
Design/methodology/approach
Based on the literature review and experts’ opinion, nine dominant risk variables faced by an Indian manufacturing SMEs have been identified. An interpretive structural modelling (ISM) approach has been adopted to establish the interrelationship among the risk variables. These risk variables have been classified by using MICMAC analysis. Based on ISM-MICMAC approach, a case study on three Indian manufacturing SMEs has been carried out.
Findings
This study would help the supply chain managers to understand and prioritize the significant risk variables. Nine significant risks variables of Indian manufacturing small and medium enterprises (SMEs) have been studied. External risk, information technology risk and financial risk have identified as most influencing risk variables, while delay risk and market risk have emerged as the most dependent risk variables. These results will provide a guideline to supply chain managers for implementation of supply chain risk management (SCRM).
Research limitations/implications
In this study, an ISM-based model is developed based on the opinion of experts from a group of Indian manufacturing SMEs; as such, this model may be biased and limited to a selected company. This framework can be extended further by adding more risk variables and sub-risk variables from the other sectors/organizations.
Originality/value
Many SCRM models are available in past literature, but no model has been proposed for the Indian Manufacturing SMEs. This research finding can be useful for managers to understand the characteristics and interrelationships among the risk variables for building a robust supply chain. These results will also help the supply chain managers in making proactive plans for SCRM, especially in the Indian SMEs context.
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Mohammad Nazim, Raj Kumar Bhardwaj, Anil Agrawal and Afroz Bano
This study aims to analyze Open Access (OA) publishing trends and policy perspectives in India. Different aspects, such as the growth of OA journals digital repositories, the…
Abstract
Purpose
This study aims to analyze Open Access (OA) publishing trends and policy perspectives in India. Different aspects, such as the growth of OA journals digital repositories, the proportion of OA availability to research literature and the status of OA mandates and policies are studied.
Design/methodology/approach
Data for analyzing OA trends were gathered from multiple data sources, including Directory of Open Access Journals (DOAJ), OpenDOAR, SCImago and Web of Science (WoS) databases. DOAJ and OpenDOAR were used for extracting OA journals and digital repository data. SCImago Journal and Country ranking portal and WoS database were used to obtain Indian publication data for assessing the proportion of OA to research literature. ROARMAP was used to study OA mandates and policies adopted by universities, research institutions and research funders in India. OA mandates and policies of major regulatory bodies and funding agencies were also reviewed using secondary sources of information and related websites.
Findings
India ranks number 15 and 17 globally for OA journals and OA repositories, with 317 journals and 98 repositories. Although India’s proportion to OA publications is 23% (7% below the world average of 30%), the annual growth rate of OA publications is around 18%. Although the governing bodies and institutions have made efforts to mandate researchers to adopt OA publishing and self-archiving, its implementation is quite low among Indian researchers, as only three institutions (out of 18 listed in the ROARMAP) are defined the embargo period. Funding agencies in India do not provide financial assistance to authors for the payment of Article Processing Charges despite mandates that research is deposited in OA repositories. India lacks a national OA policy but plans to implement a “one nation one subscription” formula to provide OA to scientific literature to all its citizens.
Research limitations/implications
The study has certain limitations. Because much of India’s research output is published in local journals that are not indexed in WoS, the study recommends conducting further analyses of publications using Scopus and other databases to understand the country’s OA publishing proportion better. A further study based on feedback from different stakeholders through a survey may be conducted for formulating a national OA policy.
Originality/value
The study is the first that used multiple data sources for investigating different facets of OA publishing in India, including OA journals, digital repositories, OA research output and OA mandates and policies for publicly funded research. The findings will be helpful for researchers and policymakers interested in promoting OA adoption among researchers worldwide.
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Vadhindran K. Rao and James E. McIntyre
We examine whether Douglas and Santerre's (1990) substitutes hypothesis obtains for bank holding companies (BHCs); i.e. whether degree of ownership concentration and salary…
Abstract
We examine whether Douglas and Santerre's (1990) substitutes hypothesis obtains for bank holding companies (BHCs); i.e. whether degree of ownership concentration and salary incentives are alternative methods of aligning BHC CEO incentives with those of shareholders. Also examined is the relation between CEO salary and bonus and CEO tenure. Using a sample of 95 BHC drawn from the 1990 Forbes magazine compensation survey, we regress CEO salary and bonus against ROE, stock return, two measures of ownership concentration, and a CEO tenure variable. Our results 1) support the substitutes hypothesis as applied to BHCs, and, 2) find a negative relation between CEO salary and bonus and CEO tenure.
The specific objectives of the study are to examine the contribution of center and state governments in social sector development and to demonstrate the strong sense of corporate…
Abstract
Purpose
The specific objectives of the study are to examine the contribution of center and state governments in social sector development and to demonstrate the strong sense of corporate social responsibility (CSR) models in an Indian perspective.
Design/methodology/approach
The study is exploratory in character and falls under the category of “general review” aimed at gaining familiarity and achieving insights into the phenomena i.e. status and direction of CSR in India.
Findings
The paper concludes that the social sector remained a neglected area as, despite a rise in their revenue earnings, the states are perennially in financial distress due to a more than proportionate increase in expenditure. The paper also highlights the poor budgetary allocation for education, ineffective doctor‐patient ratio, heavy interest payments/servicing debt and lesser governmental efforts to initiate the CSR as a most effective tool. Further, the paper suggests three prospective CSR models in an Indian perspective.
Research limitations/implications
The present study provides a starting point for further research in the development of strategies to implement CSR models in India.
Originality/value
The paper concludes with a new dimension to CSR that refers to businesspeople focusing on business to community development, socially responsible products and processes and socially responsible employee relations. For researchers interested in the areas of models of CSR, the paper introduces a rich field for future research.
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Faicel Hammami, Nader Ben-Cheikh, Brahim Ben-Beya and Basma Souayeh
This paper aims to analyze the effect of aspect ratio A and aspect velocity ratio a on the bifurcation occurrence phenomena in lid-driven cavity by using finite volume method…
Abstract
Purpose
This paper aims to analyze the effect of aspect ratio A and aspect velocity ratio a on the bifurcation occurrence phenomena in lid-driven cavity by using finite volume method (FVM) and multigrid acceleration. This study has been performed for certain pertinent parameters; a wide range of the Reynolds number values has been adopted, and aspect ratios ranging from 0.25 to 1 and various velocity ratios from 0.25 to 0.825 have been considered in this investigation. Results show that the transition to the unsteady regime follows the classical scheme of Hopf bifurcation, giving rise to a perfectly periodic state. Flow periodicity has been verified through time history plots for the velocity component and phase-space trajectories as a function of Reynolds number. Velocity profile for special case of a square cavity (A = 1) was found to be in good agreement between current numerical results and published ones. Flow characteristics inside the cavity have been presented and discussed in terms of streamlines and vorticity contours at a fixed Reynolds number (Re = 5,000) for various aspect ratios (a = 0).
Design/methodology/approach
The numerical method is based on the FVM and multigrid acceleration.
Findings
Computations have been investigated for several Reynolds numbers and aspect ratios A (0.25, 0.5, 0.75, 0.825 and 1). Besides, various velocity ratios (a = 0.25, 0.5, 0.75 and 0.825) at fixed aspect ratios (A = 0.25, 0.5 and 0.75) were considered. It is observed that the transition to the unsteady regime follows the classical scheme of Hopf bifurcation, giving rise to a perfectly periodic state. Flow periodicity is verified through time history plots for velocity components and phase-space trajectories.
Originality/value
The bifurcations between steady and unsteady states are investigated.
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Anil Kumar Goswami and Rakesh Kumar Agrawal
The purpose of this paper is to examine the relationship between ethical leadership and employee learning orientation in organizations.
Abstract
Purpose
The purpose of this paper is to examine the relationship between ethical leadership and employee learning orientation in organizations.
Design/methodology/approach
This paper uses a quantitative methodology to analyze data collected from 160 faculty members from universities, using a survey questionnaire.
Findings
The finding of this study reveals that ethical leadership has a positive effect on learning orientation of faculty members in universities.
Originality/value
This study adds to the field of ethical leadership by investigating the influence of ethical leadership on learning orientation of faculty members in universities.
Details
Keywords
Anil Kumar Goswami and Rakesh Kumar Agrawal
This study aims to build the intellectual structure of knowledge sharing (KS) research by objectively and systematically capturing and sketching the content of research papers…
Abstract
Purpose
This study aims to build the intellectual structure of knowledge sharing (KS) research by objectively and systematically capturing and sketching the content of research papers published in the KS research area.
Design/methodology/approach
This study uses a systematic literature review for data collection, and content analysis and bibliometric techniques of citation and co-citation analysis for data analyses and interpretation.
Findings
Based on the study, the intellectual structure of KS research consisting of five themes has emerged. The five themes identified are: models, frameworks and understanding for KS, the behaviour-oriented perspective of KS, technology-oriented perspective of KS, KS barriers and KS and firm’s performance.
Research limitations/implications
This study has used published literature extracted from selected journals using the web of science database. More journals and databases may be included in future studies.
Practical implications
This study will give future researchers a comprehensive understanding of KS discipline and serve as a quick reference and resource for those interested in KS research. It identifies major areas of KS for the practitioners to enable them to focus and apply various organizational interventions to derive a competitive advantage. The identified themes in the intellectual structure of KS will also provide a holistic view and give multiple perspectives to practitioners so that they can better manage KS in their organizations.
Originality/value
This is among early studies aiming to extract the intellectual structure of KS in the broad area of knowledge management research.
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Anil Kumar Goswami, Rakesh Kumar Agrawal and Meghna Goswami
The purpose of this study is to explore, understand and investigate the relationship between national culture and knowledge management (KM) process.
Abstract
Purpose
The purpose of this study is to explore, understand and investigate the relationship between national culture and knowledge management (KM) process.
Design/methodology/approach
This study is based on systematically and objectively capturing the contents of extant research papers published by researchers in this area by using the literature review methodology.
Findings
The study demonstrates significant relationship between national culture and KM process. Further, it also provides directions for future research.
Practical implications
The study will help top management to understand and appreciate the impact of national culture on KM process in organization, where people from different nations are working together. The management may apply appropriate organizational interventions to manage people of different national cultures in effective manner and effective utilization of knowledge of the organization through KM process. This paper will be considered as a quick reference and resource for anyone interested in this area.
Originality/value
This study is a comprehensive literature review of influence of national culture on KM process. Further, it also sets the research agenda for future researchers.