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Article
Publication date: 1 December 2021

Suresh Krishnan, Pothuraju Pandi and Subbarao Mopidevi

This paper aims to propose a bidirectional hidden converter (BHC)-based three-phase DC–AC conversion for energy storage application. BHC is the new concept to vary an energy…

43

Abstract

Purpose

This paper aims to propose a bidirectional hidden converter (BHC)-based three-phase DC–AC conversion for energy storage application. BHC is the new concept to vary an energy storage device voltage into wide range. Hidden converter power loss and power rating are reduced by using zero-sequence injection-based carrier-based pulse-width modulation (CBPWM) strategy.

Design/methodology/approach

By using this control strategy, a BHC processes only little amount of power during double-stage conversion, mostly during direct or single-stage conversion of the three-phase three-port converter (TPTPC) only processing the maximum power.

Findings

TPTPC consists of two sets of positive group switches for inversion process, one set of switches is regular inverter switches called vertical positive group switches, and the second set is anti-series switches, which are horizontally connected for direct or single-stage conversion.

Originality/value

Characteristics, principles and implementations of proposed DC–AC 3Ø conversion system and its PWM strategy are analyzed. Through experimental outputs, the effectiveness and viability of the proposed solutions are validated.

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Article
Publication date: 1 February 1987

Kang Rae Cho, Suresh Krishnan and Douglas Nigh

Since 1970 there has been a phenomenal growth in the establishment of foreign commercial banks in the United States thus altering the competitive dimension of US banking markets…

284

Abstract

Since 1970 there has been a phenomenal growth in the establishment of foreign commercial banks in the United States thus altering the competitive dimension of US banking markets. An analysis of the state of foreign banking presence in the United States is here provided using recent disaggregated bank‐level information. Foreign commercial banks' country of origin, timing of entry, forms of involvement, main areas of specialisation, and related offices in the United States are investigated.

Details

International Journal of Bank Marketing, vol. 5 no. 2
Type: Research Article
ISSN: 0265-2323

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Article
Publication date: 1 September 2005

Suresh Kumar Krishnan

285

Abstract

Details

Measuring Business Excellence, vol. 9 no. 3
Type: Research Article
ISSN: 1368-3047

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Article
Publication date: 1 October 2006

Suresh Kumar Krishnan

The purpose of this study, with its central thesis placed on excelling at business measures, is to underscore the need for business entities to understand the significant

3251

Abstract

Purpose

The purpose of this study, with its central thesis placed on excelling at business measures, is to underscore the need for business entities to understand the significant implication of hidden failure costs and its impact on their business processes. The study also stresses the need for organizations to systematically break the many norms.

Design/methodology/approach

This study looked at capturing the often‐overlooked component of poor quality cost via a simple function of measurement which requires an effortless yet painstaking way of collecting data pertaining to intangible wastages in the form of time, service charges and material.

Findings

A simple formula is introduced, using three types of indicators that could be used to monitor the level of poor quality costs (PQC), to quantify the total failure costs by accumulating the values of both hidden and visual failure costs.

Originality/value

The study breaks the boundaries of existing methods of understanding and calculating the all‐embracing cost of doing business, hence paving the way to make inroads in business processes improvement, enhanced job‐scope comprehension, agility and performance, further intensification of internal and external customer satisfaction.

Details

Measuring Business Excellence, vol. 10 no. 4
Type: Research Article
ISSN: 1368-3047

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Book part
Publication date: 28 November 2024

Subhabrata Ghosh and Krishna Singh

Sustainability promotes specific and balanced circumstances which favours the survival of human population with the surrounding Mother Nature with proper synchronization. This…

Abstract

Sustainability promotes specific and balanced circumstances which favours the survival of human population with the surrounding Mother Nature with proper synchronization. This practice ensures the use of all available natural resources in an equilibrated manner to satisfy the present needs along with the requirements of the succeeding generations. Agricultural sustainability reckons the role of healthy environment; society and economy in an integrated manner to promote food security and socio-economic development of the rural individuals. Normal agricultural practices have an unfathomed burden on the environment. This leads to various forms of environmental degradation like air and water pollution, soil depletion, climate change and loss of biodiversity. The sustainable agricultural practices aim to protect the environment, expand the Earth’s natural resource base and preserve or improve fertility of soil. Sustainable agriculture comprises with environmentally friendly farming methods that allow crops to be produced without harming natural systems. This prevents adverse impacts on soil, water, biodiversity as well as surrounding or downstream resources. In this present article we will analyse all issues related to mitigating environmental degradation through agricultural sustainability. Along with the proper assessment for agricultural sustainability is very crucial to understand the real scenario. This helps to take necessary measures for designing and its actual execution. The study constructed a composite index of agricultural sustainability by applying the principal component analysis method. Significant differences in agricultural sustainability were found among the states in India. It is important to mention that agricultural sustainability improved for all states in 2019 compared to 2016.

Details

Sustainable Agricultural Practices: Economic and Environmental Implications
Type: Book
ISBN: 978-1-83608-337-5

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Article
Publication date: 1 September 2005

Mike Bourne

272

Abstract

Details

Measuring Business Excellence, vol. 9 no. 3
Type: Research Article
ISSN: 1368-3047

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Article
Publication date: 25 January 2023

Yongliang Wang

This study aimed to overcome the challenging issues involved in providing high-precision eigensolutions. The accurate prediction of the buckling load bearing capacity under…

173

Abstract

Purpose

This study aimed to overcome the challenging issues involved in providing high-precision eigensolutions. The accurate prediction of the buckling load bearing capacity under different crack damage locations, sizes and numbers, and analysing the influence mechanism of crack damage on buckling instability have become the needs of theoretical research and engineering practice. Accordingly, a finite element method was developed and applied to solve the elastic buckling load and buckling mode of curved beams with crack damage. However, the accuracy of the solution depends on the quality of mesh, and the solution inevitably introduces errors due to mesh. Therefore, the adaptive mesh refinement method can effectively optimise the mesh distribution and obtain high-precision solutions.

Design/methodology/approach

For the elastic buckling of circular curved beams with cracks, the section damage defect analogy scheme of a circular arc curved beam crack was established to simulate the crack size (depth), position and number. The h-version finite element mesh adaptive analysis method of the variable section Euler–Bernoulli beam was introduced to solve the elastic buckling problem of circular arc curved beams with crack damage. The optimised mesh and high-precision buckling load and buckling mode solutions satisfying the preset error tolerance were obtained.

Findings

The results of testing typical examples show that (1) the established section damage defect analogy scheme of circular arc curved beam crack can effectively realise the simulation of crack size (depth), position and number. The solution strictly satisfies the preset error tolerance; (2) the non-uniform mesh refinement in the algorithm can be adapted to solve the arbitrary order frequencies and modes of cracked cylindrical shells under the conditions of different ring wave numbers, crack positions and crack depths; and (3) the change in the buckling mode caused by crack damage is applicable to the study of elastic buckling under various curved beam angles and crack damage distribution conditions.

Originality/value

This study can provide a novel strategy for the adaptive mesh refinement for finite element analysis of elastic buckling of circular arc curved beams with crack damage. The adaptive mesh refinement method established in this study is fundamentally different from the conventional finite element method which employs the user experience to densify the meshes near the crack. It can automatically and flexibly generate a set of optimised local meshes by iteratively dividing the fine mesh near the crack, which can ensure the high accuracy of the buckling loads and modes. The micro-crack in curved beams is also characterised by weakening the cross-sectional stiffness to realise the characterisation of locations, depths and distributions of multiple crack damage, which can effectively analyse the disturbance behaviour of different forms of micro-cracks on the dynamic behaviour of beams.

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Article
Publication date: 22 December 2022

Yongliang Wang

In this paper, a superconvergent patch recovery method is proposed for superconvergent solutions of modes in the finite element post-processing stage of variable geometrical…

206

Abstract

Purpose

In this paper, a superconvergent patch recovery method is proposed for superconvergent solutions of modes in the finite element post-processing stage of variable geometrical Timoshenko beams. The proposed superconvergent patch recovery method improves the solution speed and accuracy of the finite element analysis of a curved beam. The free vibration and natural frequency of the beam were considered for studying forced vibrations and structural resonance. Beam vibration mode analysis was performed for high-precision vibration mode solutions and frequency values. The proposed method can be used to compute beam vibration modes of beams with different shapes and boundary conditions as well as variable cross sections and curvatures. The purpose of this paper is to address these issues.

Design/methodology/approach

An adaptive method was proposed to analyse the in-plane and out-of-plane free vibrations of the variable geometrical Timoshenko beams. In the post-processing stage of the displacement-based finite element method, the superconvergent patch recovery method and high-order shape function interpolation technique were used to obtain the superconvergent solution of mode (displacement). The superconvergent solution of mode was used to estimate the error of the finite element solution of mode in the energy form under the current mesh. Furthermore, an adaptive mesh refinement was proposed by mesh subdivision to derive an optimised mesh and accurate finite element solution to meet the preset error tolerance.

Findings

The results computed using the proposed algorithm were in good agreement with those computed using other high-precision algorithms, thus validating the accuracy of the proposed algorithm for beam analysis. The numerical analysis of parabolic curved beams, beams with variable cross sections and curvatures, elliptically curved beams and circularly curved beams helped verify that the solutions of frequencies were consistent with the results obtained using other specially developed methods. The proposed method is well suited for the mesh refinement analysis of a curved beam structure for analysing the changes in high-order vibration mode. The parts where the vibration mode changed significantly were locally densified; a relatively fine mesh division was adopted that validated the reliability of the mesh optimisation processing of the proposed algorithm.

Originality/value

The proposed algorithm can obtain high-precision vibration solutions of variable geometrical Timoshenko beams based on more optimized and reasonable meshes than the conventional finite element method. Furthermore, it can be used for vibration problems of parabolic curved beams, beams with variable cross sections and curvatures, elliptically curved beams and circularly curved beams. The proposed algorithm can be extended for application in superconvergent computation and adaptive analysis of finite element solutions of general structures and solid deformation fields and used for adaptive analysis of more complex plates, shells and three-dimensional structures. Additionally, this method can analyse the vibration and stability of curved members with crack damage to obtain high-precision vibration modes and instability modes under damage defects.

Details

Engineering Computations, vol. 40 no. 1
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 1 May 2000

Jaroslav Mackerle

A bibliographical review of the finite element methods (FEMs) applied for the linear and nonlinear, static and dynamic analyses of basic structural elements from the theoretical…

3561

Abstract

A bibliographical review of the finite element methods (FEMs) applied for the linear and nonlinear, static and dynamic analyses of basic structural elements from the theoretical as well as practical points of view is given. The bibliography at the end of the paper contains 1,726 references to papers, conference proceedings and theses/dissertations dealing with the analysis of beams, columns, rods, bars, cables, discs, blades, shafts, membranes, plates and shells that were published in 1996‐1999.

Details

Engineering Computations, vol. 17 no. 3
Type: Research Article
ISSN: 0264-4401

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Case study
Publication date: 4 February 2025

Vijayshankar Krishnamurthy and M.R. Suresh

The learning outcomes are as follows: develop an understanding of challenges faced by organizations regarding strategic planning; examine the strategies formulated by…

Abstract

Learning outcomes

The learning outcomes are as follows: develop an understanding of challenges faced by organizations regarding strategic planning; examine the strategies formulated by organizations that can enable wider adoption of a service offering; analyse service quality gaps that will provide new insights; and evaluate the strategic choices that would impact the growth of the organization.

Case overview/synopsis

Peter Bushwash International (PBI) was an organization that managed 60 tennis centres in 25 countries. With a staff of 100 tennis coaches worldwide, over 3 million students participated in PBI’s tennis programs. Cesar Morales was appointed the Technical Director on a two-year contract for the PBI’s new tennis centre in Bangalore (India). Morales had to decide if a decentralized strategy (hub-and-spoke model) would create broader growth for the PBI tennis program instead of operating as a premium hub with fewer students.

Complexity academic level

The case was written for organizational strategy, marketing and service quality courses for undergraduate business students (BBA).

Supplementary material

Teaching notes are available for educators only.

Subject code

CSS 7: Management Science.

Details

Emerald Emerging Markets Case Studies, vol. 15 no. 1
Type: Case Study
ISSN: 2045-0621

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