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Article
Publication date: 3 July 2007

Vinod Kumar Khanna

To expose the gate of ion‐sensitive field‐effect transistor (ISFET) to filthy and muddy water, suspended algae, etc. investigate the influence of these conditions on…

Abstract

Purpose

To expose the gate of ion‐sensitive field‐effect transistor (ISFET) to filthy and muddy water, suspended algae, etc. investigate the influence of these conditions on device performance and suggest measures for using the device in applications where suspended soil particles are present.

Design/methodology/approach

In this paper, cleaning procedure to make the blocked ISFET operative has been described. The effect of dirty water on pH sensitivity factor of ISFET, after it restarted functioning, has been measured. ISFET package has been modified. A relatively simple disposable nylon mesh with openings of size 100 μm for filtering bigger particles and lower for smaller particles, has been proposed for dirty applications to minimize device failures. This sieves away any dirt and thereby avoids failure.

Findings

The device action is frequently blocked by deposition of dirt on the gate. Generally, it is recoverable by proper cleaning action although with reduced sensitivity. This necessitates recalibration. But a protective filter helps in reducing failures. It is more advantageous to prevent clogging of ISFET than to revive a clogged device, sacrificing sensitivity.

Research limitations/implications

After recovery, the original sensitivity of the device is not achieved, and the device has to be used with degraded sensitivity.

Practical implications

Measurement of pH of actual sources of water, whether clean or dirty, is important.

Originality/value

Problems of pH measurements of dirty samples have been studied. The study helps in understanding device behaviour in these samples and provides suitable corrective measures. Further, the pH survey of dirty and clean water samples provides useful information about the pH distribution and balance in nature.

Details

Sensor Review, vol. 27 no. 3
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 18 April 2008

Vinod Kumar Khanna

To provide an insight of the intricacies of ion‐sensitive field‐effect transistor (ISFET) encapsulation and describe the presently available packaging solutions…

Abstract

Purpose

To provide an insight of the intricacies of ion‐sensitive field‐effect transistor (ISFET) encapsulation and describe the presently available packaging solutions, indicating how the packaging requirements can be complied for various applications.

Design/methodology/approach

ISFET packaging is a complete subject in itself. The paper includes examples of the different packaging strategies that have been offered by literature and company findings over the past few decades.

Findings

ISFET packaging has progressed from the initial epoxy embedding of the wire bonds and contact pads to the more sophisticated techniques capable of automation wherein moulds are made for epoxy coating or the chip is tightened between contacting parts using elastomer gaskets.

Research limitations/implications

The emerging packaging technologies have succeeded in making chip packaging more a science than an art, and the new methods are capable of large‐scale manufacturing with greater precision.

Practical implications

Packaging solutions for demanding applications of ISFETs have been provided by the upcoming technologies.

Originality/value

The information provided in this paper is of immense value to researchers working on ISFET encapsulation.

Details

Microelectronics International, vol. 25 no. 2
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 25 February 2014

Vinod Kumar Khanna and Ruby Gupta

The Japanese have had a phenomenal impact on the world's market using 5 “S” and total quality management (TQM) philosophy. Though Indian companies also claim to follow…

Abstract

Purpose

The Japanese have had a phenomenal impact on the world's market using 5 “S” and total quality management (TQM) philosophy. Though Indian companies also claim to follow these philosophies, however India has not been able to make substantial s in this regard. India has been ranked very low (India's rank has been 35 out of 59 economies) as per the IMD world competitiveness year book 2012 report. During a literature survey, it was found that competency-based training contributes to a greater extent for the success of 5 “S” and TQM implementation. Therefore, research was undertaken to study the effect of competency-based training on the implementation of 5 “S” and TQM principles. The paper aims to discuss these issues.

Design/methodology/approach

This paper attempts to assess and compare the role of competency-based training on the status of 5 “S” and TQM in Mayur Uniquoters Ltd (MUL) and SKH Metals Ltd. This paper compiles a list of the most important competency variables and prepares a competency training module for the industries. Quality award models will be used to compute a competency index, 5 “S” index, and TQM index before and after competency-based training in MUL. However, in the case of SKH Metals Ltd, the competency index, 5 “S” index and TQM index will be analyzed only after competency-based training. The index methodology has been used to assess and compare the level of performance in competency, 5 “S”, and TQM and the result will be validated through a two-sample t-test.

Findings

The paper reveals that competency-based training has a positive correlation on, 5 “S” and TQM, and is instrumental in improving the level of 5 “S” and TQM in both industries. Based on a two-sample t-test, the performance of 5 “S” and TQM improved by 74.4 and 84.5 percent, respectively, in case of MUL. This paper also prepares the competency-based training module.

Research limitations/implications

The investigation and research findings are still exploratory. Future research can focus on and establish the correlation based on a larger number of organizations. A broadly based and larger sample size would provide a better picture of the relationship between competency, 5 “S” and TQM philosophy. The data have been collected before and after competency-based training in Mayur Uniquoters, whereas, in the case of SKH Metals, the data have been compiled only after competency-based training.

Originality/value

The study has been able to compile competency variables based on the feedback of 84 industries and also prepares a competency training module. Competency index, 5 “S” index and TQM index have been analyzed before and after competency-based training in MUL and two-sample t-test was also performed. In the case of SKH Metals Ltd, the data have been analyzed after competency-based training. The study has been able to identify that both organizations could perform better in 5 “S” and TQM after competency-based training. India stands a better chance in improving its competitiveness in the world ranking if all organizations focus on competency-based training, apart from training on 5 “S” and TQM.

Details

International Journal of Quality & Reliability Management, vol. 31 no. 3
Type: Research Article
ISSN: 0265-671X

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Article
Publication date: 21 August 2009

Vinod Kumar Khanna

Ho and Osada state that 5 “S” is the foundation for implementing total quality management (TQM) philosophy and also emphasize that 5 “S” is the primary driver for the…

Abstract

Purpose

Ho and Osada state that 5 “S” is the foundation for implementing total quality management (TQM) philosophy and also emphasize that 5 “S” is the primary driver for the success of TQM in any organization. Since the competitiveness of India has been ranked comparatively low worldwide, it shows that Indian organizations may be weak in implementing TQM. The purpose of this paper is to assess the status of TQM, quality tools and 5 “S” in Indian organizations and to study their relationship among three categories of organizations, i.e. “Large”, “Medium” and “Small”.

Design/methodology/approach

This paper presents the status of 5 “S”, quality tools and TQM in Indian organizations based on 62 organizations.

Findings

The paper reveals that 5 “S” performance has a direct bearing on the performance of TQM journey. There is a positive correlation among 5 “S” index, usage of quality tools and TQM index. The high 5 “S” index in “Large” category of organization has resulted in high‐TQM index in comparision to “Medium” and “Small” organizations. The weakest link is “Small” category, which has a direct bearing on the overall performance of TQM.

Research limitations/implications

The investigation and research findings are still exploratory. Future research can focus and study the correlation among 5 “S”, quality tools, and TQM sector wise. Broadly based and larger sample size would provide better picture of 5 “S”, usage of quality tools and TQM status.

Originality/value

The study has been able to compute 5 “S”, usage of quality tools and TQM index among the three category of organizations and have been able to establish the correlation among 5 “S”, TQM and quality tools. The study has been able to identify that organizations with high‐5 “S” index tend to use high number of quality tools and have high‐TQM index.

Details

The TQM Journal, vol. 21 no. 5
Type: Research Article
ISSN: 1754-2731

Keywords

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Article
Publication date: 25 January 2008

Vinod Kumar Khanna

This paper aims to discover the novelties in biosensor fabrication brought about by breakthroughs in nanomaterials and process techniques, the resulting enhancement in…

Abstract

Purpose

This paper aims to discover the novelties in biosensor fabrication brought about by breakthroughs in nanomaterials and process techniques, the resulting enhancement in biosensor functionalities, new applications and future possibilities.

Design/methodology/approach

The impact of nanotechnology on biosensor advancement has been examined. Different directions of biosensor research in the nano era have been highlighted. These include the efforts made through nanotechnology to improve the performance parameters of the existing biosensors, and for implementation of innovative biosensor concepts.

Findings

Nanotechnology is a key technology in biosensor development. It has permeated into the biosensor field and brought in its wake far‐reaching changes.

Practical implications

Biosensor science and engineering are central to virtually all aspects of life including medical diagnostics, environmental monitoring and biotechnological process control. Therefore, the progress in biosensors brought about by nanotechnology influences one's everyday life.

Originality/value

The study helps in understanding the applications of nanotechnology in fabricating a new generation of biosensors with improved characteristics. It provides information of value to those involved in biosensor research.

Details

Sensor Review, vol. 28 no. 1
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 14 June 2013

Vinod Kumar Khanna

This paper aims to focus on the steps necessary to bolster marketability of ISFET‐based sensors, keeping in view the present technological status of ISFET and its limitations.

Abstract

Purpose

This paper aims to focus on the steps necessary to bolster marketability of ISFET‐based sensors, keeping in view the present technological status of ISFET and its limitations.

Design/methodology/approach

Technical problems inhibiting commercialization of ISFET‐based sensors are highlighted. The problems considered include sensitivity, drift, cleaning, disposability, reference systems, chip structural designs, packaging, light, temperature, hysteresis and body effects, and instability of biosensors. Available solutions are prescribed, discussing both direct and indirect ways of addressing the problems of ISFET sensors.

Findings

The history of progress of ISFET (Ion‐sensitive Field‐Effect Transistor) is synonymous with the ways and means devised by different researchers for surmounting (direct approach) or acclimatizing to the shortcomings of this device (indirect approach). Signal conditioning hardware and software considerably help in obviating issues such as drift, hysteresis and thermal effects.

Research limitations/implications

Reliable on‐chip reference electrodes and ISFET packaging for continuous online applications are interesting research areas.

Practical implications

Where a plausible solution exists, it should be readily availed; otherwise the device limitation should be understood and ingeniously bypassed. Compromising solutions targeted on the specific applications pave the way towards widespread utilization of these sensors in industrial, biomedical, food and environmental sectors.

Originality/value

The study helps in understanding the problems besetting utilization of ISFETs, calling attention to essential remedies for ISFET‐based products. It provides information of value to those involved in ISFET measurements.

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Article
Publication date: 17 June 2009

Chinmay Pattnaik and B. Elango

The previous decade has been characterized by emerging market firms expanding into international markets. This trend has led to scholars in the IB arena to grapple with…

Abstract

The previous decade has been characterized by emerging market firms expanding into international markets. This trend has led to scholars in the IB arena to grapple with the new phenomenon of emerging multinational enterprises (EMNEs), specifically the relationship between internationalization and performance of the EMNEs. This paper seeks to add to the literature by capturing the impact of firm resources on the internationalization‐performance relationship. Empirical analysis on a sample of 787 Indian manufacturing firms indicates that there is a non‐linear relationship between internationalization and performance. Findings also indicate that a firm’s capabilities in cost efficiency and marketing have a moderating impact on this relationship.

Details

Multinational Business Review, vol. 17 no. 2
Type: Research Article
ISSN: 1525-383X

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Article
Publication date: 2 November 2015

R. Rathish Bhatt and Sujoy Bhattacharya

The purpose of this paper is to examine the relationship between financial performance and internal governance structure of Information Technology (IT) sector in India…

Abstract

Purpose

The purpose of this paper is to examine the relationship between financial performance and internal governance structure of Information Technology (IT) sector in India. Various aspects of the board such as board independence, board size, board meeting, board attendance, aspects of leadership with role duality and family ownership are addressed in this study.

Design/methodology/approach

The sample consists of 114 listed IT sector firms in India from 2006 to 2011. To account for endogeneity of the relationship between firm performance, corporate governance and capital structure of the firm, simultaneous system of equations was employed.

Findings

The study, after controlling for firm-specific factors, shows that larger board size had a positive impact on firm performance. Independent directors on the board did not show any association with firm performance. The study failed to find any relationship between the number of board meetings and firm performance. However, attendance of the board members was found to be positively associated with firm performance. Family firms showed better performance compared to non-family firms.

Originality/value

The study demonstrates that governance measures related to the board in Indian firms have some similarities to the firms in western countries. However, the study shows that some of the widely used board characteristic measures differ with other studies documented in the western contexts which limits the generalisability of the western studies in the emerging countries.

Details

Journal of Advances in Management Research, vol. 12 no. 3
Type: Research Article
ISSN: 0972-7981

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Book part
Publication date: 23 June 2016

Bao Yong, Fan Yanqin, Su Liangjun and Zinde-Walsh Victoria

This paper examines Aman Ullah’s contributions to robust inference, finite sample econometrics, nonparametrics and semiparametrics, and panel and spatial models. His early…

Abstract

This paper examines Aman Ullah’s contributions to robust inference, finite sample econometrics, nonparametrics and semiparametrics, and panel and spatial models. His early works on robust inference and finite sample theory were mostly motivated by his thesis advisor, Professor Anirudh Lal Nagar. They eventually led to his most original rethinking of many statistics and econometrics models that developed into the monograph Finite Sample Econometrics published in 2004. His desire to relax distributional and functional-form assumptions lead him in the direction of nonparametric estimation and he summarized his views in his most influential textbook Nonparametric Econometrics (with Adrian Pagan) published in 1999 that has influenced a whole generation of econometricians. His innovative contributions in the areas of seemingly unrelated regressions, parametric, semiparametric and nonparametric panel data models, and spatial models have also inspired a larger literature on nonparametric and semiparametric estimation and inference and spurred on research in robust estimation and inference in these and related areas.

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Article
Publication date: 17 March 2020

Harvinder Singh, Vinod Kumar and Jathinder Kapoor

An experimental study has been conducted to model and optimize wire electric discharge machining (WEDM) process parameters such as pulse-on time, pulse-off time, servo…

Abstract

Purpose

An experimental study has been conducted to model and optimize wire electric discharge machining (WEDM) process parameters such as pulse-on time, pulse-off time, servo voltage and peak current for response characteristics during machining of Nimonic 75 alloy.

Design/methodology/approach

The response surface methodology (RSM)-based Box–Behnken's design has been employed for experimental investigation. RSM is used for developing quadratic regression models for selected response variables i.e. material removal efficiency and kerf width. To validate the model, confirmation experiments have been performed. The multi-response optimization has been done using desirability function approach.

Findings

Through analysis of variation, the percent contribution of process parameters on the response characteristics has been found. Pulse-off time is the most significant parameter affecting the kerf width and material removal efficiency followed by pulse-on time. The quadratic regression models have been developed for prediction of selected response variables. An attempt has been made to optimize the WEDM parameters for material removal efficiency and kerf width. The recommended process parameter setting for maximum material removal efficiency and minimum kerf width have been found to be pulse-on time = 0.6 µs, pulse-off time = 14 µs, servo voltage = 25 V and peak current = 200 A.

Originality/value

The “kerf width” is an important response variable for maintaining dimensional accuracy of the machined component, but has not been given due attention by the researchers. In the present work, the developed regression model for “kerf width” can be used in estimating wire offset setting and thereby getting a dimensionally accurate product. The optimum process parameters obtained in WEDM of Nimonic 75 alloy will contribute in database of machining. The outcome of this study would be added to scare database of the machining of Nimonic 75 alloy and also would be extremely useful for making the technology charts for WEDM.

Details

Multidiscipline Modeling in Materials and Structures, vol. 16 no. 5
Type: Research Article
ISSN: 1573-6105

Keywords

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