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Article
Publication date: 28 June 2022

Narottam Yadav, Mathiyazhagan Kaliyan, Tarik Saikouk, Susobhan Goswami and Ömer Faruk Görçün

The present paper proposes a framework for zero-defect manufacturing in Indian industries. Due to the current competitive market, there is a strong need to achieve zero

Abstract

Purpose

The present paper proposes a framework for zero-defect manufacturing in Indian industries. Due to the current competitive market, there is a strong need to achieve zero defects from the customer's perspective. A survey questionnaire is analyzed based on the responses and a structured framework is drafted to implement zero defect manufacturing in the Indian industry.

Design/methodology/approach

To analyze zero-defect in Indian industries, a literature review and a survey questionnaire constituted a framework. This framework is independent of the type of process and product.

Findings

The findings of this study are based on a total of 925 responses received through survey questionnaires by different mediums. The framework has been tested in different manufacturing organizations to achieve zero-defect through the continuous improvement approach.

Practical implications

The study results aim to achieve zero-defect, help to improve customer satisfaction, reduce waste and rework in the manufacturing process. This framework is also used as a problem-solving approach to implement Six Sigma in the Indian industries.

Originality/value

Zero defect manufacturing is growing in India and globally. This framework helps to implement zero defect manufacturing in Indian industries. It is an essential tool to capture the voice of the customer.

Details

Benchmarking: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1463-5771

Keywords

Article
Publication date: 2 March 2012

G. Mora, G. Mora‐Porta and J.M. Sepulcre

This paper aims to introduce a new class of entire functions whose zeros (zk)k≥1 satisfy ∑k=1Im zk=O(1).

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Abstract

Purpose

This paper aims to introduce a new class of entire functions whose zeros (zk)k≥1 satisfy ∑k=1Im zk=O(1).

Design/methodology/approach

This is done by means of a Ritt's formula which is used to prove that every partial sum of the Riemann Zeta function, ζn(z):=∑k=1n1/kz, n≥2, has zeros (snk)k≥1 verifying ∑k=1Re snk=O(1) and extending this property to a large class of entire functions denoted by AO.

Findings

It is found that this new class AO has a part in common with the class A introduced by Levin but is distinct from it. It is shown that, in particular, AO contains every partial sum of the Riemann Zeta function ζn(iz) and every finite truncation of the alternating Dirichlet series expansion of the Riemann zeta function, Tn(iz):=∑k=1n(−1)k−1/kiz, for all n≥2.

Practical implications

With the exception of the n=2 case, numerical experiences show that all zeros of ζn(z) and Tn(z) are not symmetrically distributed around the imaginary axis. However, the fact consisting of every function ζn(iz) and Tn(iz) to be in the class AO implies the existence of a very precise physical equilibrium between the zeros situated on the left half‐plane and the zeros situated on the right half‐plane of each function. This is a relevant fact and it points out that there is certain internal rule that distributes the zeros of ζn(z) and Tn(z) in such a way that few zeros on the left of the imaginary axis and far away from it, must be compensated with a lot of zeros on the right of the imaginary axis and close to it, and vice versa.

Originality/value

The paper presents an original class of entire functions that provides a new point of view to study the approximants and the alternating Dirichlet truncations of the Riemann zeta function.

Book part
Publication date: 18 April 2018

Dominique Lord and Srinivas Reddy Geedipally

Purpose – This chapter provides an overview of issues related to analysing crash data characterised by excess zero responses and/or long tails and how to overcome these…

Abstract

Purpose – This chapter provides an overview of issues related to analysing crash data characterised by excess zero responses and/or long tails and how to overcome these problems. Factors affecting excess zeros and/or long tails are discussed, as well as how they can bias the results when traditional distributions or models are used. Recently introduced multi-parameter distributions and models developed specifically for such datasets are described. The chapter is intended to guide readers on how to properly analyse crash datasets with excess zeros and long or heavy tails.

Methodology – Key references from the literature are summarised and discussed, and two examples detailing how multi-parameter distributions and models compare with the negative binomial distribution and model are presented.

Findings – In the event that the characteristics of the crash dataset cannot be changed or modified, recently introduced multi-parameter distributions and models can be used efficiently to analyse datasets characterised by excess zero responses and/or long tails. They offer a simpler way to interpret the relationship between crashes and explanatory variables, while providing better statistical performance in terms of goodness-of-fit and predictive capabilities.

Research implications – Multi-parameter models are expected to become the next series of traditional distributions and models. The research on these models is still ongoing.

Practical implications – With the advancement of computing power and Bayesian simulation methods, multi-parameter models can now be easily coded and applied to analyse crash datasets characterised by excess zero responses and/or long tails.

Details

Safe Mobility: Challenges, Methodology and Solutions
Type: Book
ISBN: 978-1-78635-223-1

Keywords

Book part
Publication date: 1 January 2005

T.J. Brailsford, J.H.W. Penm and R.D. Terrell

Vector error-correction models (VECMs) have become increasingly important in their application to financial markets. Standard full-order VECM models assume non-zero

Abstract

Vector error-correction models (VECMs) have become increasingly important in their application to financial markets. Standard full-order VECM models assume non-zero entries in all their coefficient matrices. However, applications of VECM models to financial market data have revealed that zero entries are often a necessary part of efficient modelling. In such cases, the use of full-order VECM models may lead to incorrect inferences. Specifically, if indirect causality or Granger non-causality exists among the variables, the use of over-parameterised full-order VECM models may weaken the power of statistical inference. In this paper, it is argued that the zero–non-zero (ZNZ) patterned VECM is a more straightforward and effective means of testing for both indirect causality and Granger non-causality. For a ZNZ patterned VECM framework for time series of integrated order two, we provide a new algorithm to select cointegrating and loading vectors that can contain zero entries. Two case studies are used to demonstrate the usefulness of the algorithm in tests of purchasing power parity and a three-variable system involving the stock market.

Details

Research in Finance
Type: Book
ISBN: 978-0-76231-277-1

Book part
Publication date: 8 November 2010

Hollie J. Mackey and Jacqueline A. Stefkovich

There is a lack of empirical evidence to support the claim that zero-tolerance policies decrease violent incidents in schools or improve school safety. The message behind…

Abstract

There is a lack of empirical evidence to support the claim that zero-tolerance policies decrease violent incidents in schools or improve school safety. The message behind the policies clearly indicates that violence in schools is not tolerable under any circumstances; however, there is no correlation between the message and the outcomes from policy implementation. The literature on school order and safety suggests that zero tolerance is the simplest and least effective approach with a myriad of unintentional consequences that have a negative impact on education, not just for an individual student but for the system as a whole (American Psychological Association, 2006; Casella, 2003). This chapter examines the role of the school leader, the historical background of school safety, the role of the school leader as a learner, the legislative events that led to the development of zero-tolerance policies, and outline the unintended consequences of zero-tolerance policies in relation to leadership and learning. An alternative approach to school discipline is proposed – namely a restorative justice approach, which may work towards alleviating many of these unintended consequences.

Details

Global Perspectives on Educational Leadership Reform: The Development and Preparation of Leaders of Learning and Learners of Leadership
Type: Book
ISBN: 978-0-85724-445-1

Book part
Publication date: 6 January 2016

Jens H. E. Christensen and Glenn D. Rudebusch

Recent U.S. Treasury yields have been constrained to some extent by the zero lower bound (ZLB) on nominal interest rates. Therefore, we compare the performance of a…

Abstract

Recent U.S. Treasury yields have been constrained to some extent by the zero lower bound (ZLB) on nominal interest rates. Therefore, we compare the performance of a standard affine Gaussian dynamic term structure model (DTSM), which ignores the ZLB, to a shadow-rate DTSM, which respects the ZLB. Near the ZLB, we find notable declines in the forecast accuracy of the standard model, while the shadow-rate model forecasts well. However, 10-year yield term premiums are broadly similar across the two models. Finally, in applying the shadow-rate model, we find no gain from estimating a slightly positive lower bound on U.S. yields.

Details

Dynamic Factor Models
Type: Book
ISBN: 978-1-78560-353-2

Keywords

Article
Publication date: 16 August 2021

Flávio Morais, Zélia Serrasqueiro and Joaquim J.S. Ramalho

The purpose of this paper is to investigate whether the effect of country and corporate governance mechanisms on zero leverage is heterogeneous across market- and…

Abstract

Purpose

The purpose of this paper is to investigate whether the effect of country and corporate governance mechanisms on zero leverage is heterogeneous across market- and bank-based financial systems.

Design/methodology/approach

Using logit regression methods and a sample of listed firms from 14 Western European countries for the 2002–2016 period, this study examines the propensity of firms having zero leverage in different financial systems.

Findings

Country governance mechanisms have a heterogeneous effect on zero leverage, with higher quality mechanisms increasing zero-leverage propensity in bank-based countries and decreasing it in market-based countries. Board dimension and independency have no impact on zero leverage. A higher ownership concentration decreases the propensity for zero-leverage policies in bank-based countries.

Research limitations/implications

This study’s findings show the importance of considering both country- and firm-level governance mechanisms when studying the zero-leverage phenomenon and that the effect of those mechanisms vary across financial and legal systems.

Practical implications

For managers, this study suggests that stronger national governance makes difficult (favours) zero-leverage policies in market (bank)-based countries. In bank-based countries, it also suggests that the presence of shareholders that own a large stake makes the adoption of zero-leverage policies difficult. This last implication is also important for small shareholders by suggesting that investing in firms with a concentrated ownership reduces the risk that zero-leverage policies are adopted by entrenched reasons.

Originality/value

To the best of the authors’ knowledge, this is the first study to consider simultaneously the effects of both country- and firm-level governance mechanisms on zero leverage and to allow such effects to vary across financial systems.

Details

Corporate Governance: The International Journal of Business in Society, vol. 22 no. 1
Type: Research Article
ISSN: 1472-0701

Keywords

Article
Publication date: 18 June 2021

Arim Park, Hyun Sang An, Ju Myung Song and Christina Chung

This study examines the effectiveness of Zero-Contact Marketing that minimizes contact between employees and consumers in marketplaces by adopting an integrated research…

Abstract

Purpose

This study examines the effectiveness of Zero-Contact Marketing that minimizes contact between employees and consumers in marketplaces by adopting an integrated research framework of motivation theory, servicescape model and the theory of reasoned action (TRA).

Design/methodology/approach

This study randomly collected 314 respondents through an online survey in May 2020 in South Korea. Structural equation modeling (SEM) assessed the overall hypothetical research model.

Findings

Zero-Contact Marketing facilitates the positive impacts of Korean consumers' motivations (intrinsic and extrinsic) and service environment on their word-of-mouth (WOM) intention to spread information about a store offering Zero-Contact Marketing service and the store revisit intention. In addition, consumers' attitude toward Zero-Contact Marketing and shopping pleasure (SPL) has stronger impacts on consumers' WOM intention than they do on the store revisit intention.

Research limitations/implications

The limitation of this study lies in that the survey participants responded only in South Korea, which may lead to biased results. To provide a more generalized insight, this study should be extended by considering consumers in other countries, since many consumers around the world tend to minimize face-to-face interaction and avoid unnecessary interruptions under the current pandemic.

Practical implications

By minimizing the social interaction between employees and consumers, Zero-Contact Marketing may increase consumers' shopping satisfaction with free shopping moments and no disturbance, especially under the COVID-19 pandemic.

Originality/value

The findings provide theoretical contributions by empirically validating the effects of intrinsic and extrinsic motivations and service environment on consumers' internal and external responses in a Zero-Contact retail setting.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 34 no. 3
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 2 November 2012

Younès Mouatassim

The purpose of this paper is to introduce the zero‐modified distributions in the calculation of operational value‐at‐risk.

Abstract

Purpose

The purpose of this paper is to introduce the zero‐modified distributions in the calculation of operational value‐at‐risk.

Design/methodology/approach

This kind of distributions is preferred when excess of zeroes is observed. In operational risk, this phenomenon may be due to the scarcity of data, the existence of extreme values and/or the threshold from which banks start to collect losses. In this article, the paper focuses on the analysis of damage to physical assets.

Findings

The results show that basic Poisson distribution underestimates the dispersion, and then leads to the underestimation of the capital charge. However, zero‐modified Poisson distributions perform well the frequency. In addition, basic negative binomial and its related zero‐modified distributions, in their turn, offer a good prediction of count events. To choose the distribution that suits better the frequency, the paper uses the Vuong's test. Its results indicate that zero‐modified Poisson distributions, basic negative binomial and its related zero‐modified distributions are equivalent. This conclusion is confirmed by the capital charge calculated since the differences between the six aggregations are not significant except that of basic Poisson distribution.

Originality/value

Recently, the zero‐modified formulations are widely used in many fields because of the low frequency of the events. This article aims to describe the frequency of operational risk using zero‐modified distributions.

Article
Publication date: 1 June 1999

George K. Chacko

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today…

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Abstract

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today. Considers the marketing strategies employed, together with the organizational structures used and looks at the universal concepts that can be applied to any product. Uses anecdotal evidence to formulate a number of theories which can be used to compare your company with the best in the world. Presents initial survival strategies and then looks at ways companies can broaden their boundaries through manipulation and choice. Covers a huge variety of case studies and examples together with a substantial question and answer section.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 11 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

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