Search results

1 – 10 of 14
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 2 July 2020

Ingo Hoffmann and Christoph J. Börner

This paper aims to evaluate the accuracy of a quantile estimate. Especially when estimating high quantiles from a few data, the quantile estimator itself is a random number with…

169

Abstract

Purpose

This paper aims to evaluate the accuracy of a quantile estimate. Especially when estimating high quantiles from a few data, the quantile estimator itself is a random number with its own distribution. This distribution is first determined and then it is shown how the accuracy of the quantile estimation can be assessed in practice.

Design/methodology/approach

The paper considers the situation that the parent distribution of the data is unknown, the tail is modeled with the generalized pareto distribution and the quantile is finally estimated using the fitted tail model. Based on well-known theoretical preliminary studies, the finite sample distribution of the quantile estimator is determined and the accuracy of the estimator is quantified.

Findings

In general, the algebraic representation of the finite sample distribution of the quantile estimator was found. With the distribution, all statistical quantities can be determined. In particular, the expected value, the variance and the bias of the quantile estimator are calculated to evaluate the accuracy of the estimation process. Scaling laws could be derived and it turns out that with a fat tail and few data, the bias and the variance increase massively.

Research limitations/implications

Currently, the research is limited to the form of the tail, which is interesting for the financial sector. Future research might consider problems where the tail has a finite support or the tail is over-fat.

Practical implications

The ability to calculate error bands and the bias for the quantile estimator is equally important for financial institutions, as well as regulators and auditors.

Originality/value

Understanding the quantile estimator as a random variable and analyzing and evaluating it based on its distribution gives researchers, regulators, auditors and practitioners new opportunities to assess risk.

Details

The Journal of Risk Finance, vol. 21 no. 3
Type: Research Article
ISSN: 1526-5943

Keywords

Access Restricted. View access options
Article
Publication date: 16 January 2023

Ingo Balderjahn, Stefan Hoffmann and Alexandra Hüttel

Because steadily growing consumption is not beneficial for nature and climate and is not the same as increasing well-being, an anti-consumerism movement has formed worldwide. The…

1459

Abstract

Purpose

Because steadily growing consumption is not beneficial for nature and climate and is not the same as increasing well-being, an anti-consumerism movement has formed worldwide. The renouncement of dispensable consumption will, however, only establish itself as a significant lifestyle if consumers do not perceive reduced consumption as a personal sacrifice. Since prior research has not yielded a consistent understanding of the relationship between anti-consumption and personal well-being, this paper aims to examine three factors about which theory implies that they may moderate this relationship: decision-control empowerment, market-control empowerment and the value of materialism.

Design/methodology/approach

The analysis is based on data from a large-scale, representative online survey (N = 1,398). Structural equation modelling with latent interaction effects is used to test how three moderators (decision-control empowerment, market-control empowerment and materialism) affect the relationship amongst four types of anti-consumption (e.g. voluntary simplicity) and three different well-being states (e.g. subjective well-being).

Findings

While both dimensions of empowerment almost always directly promote consumer well-being, significant moderation effects are present in only a few but meaningful cases. Although the materialism value tends to reduce consumers’ well-being, it improves the well-being effect of two anti-consumption styles.

Research limitations/implications

Using only one sample from a wealthy country is a limitation of the study. Researchers should replicate the findings in different nations and cultures.

Practical implications

Consumer affairs practitioners and commercial marketing for sustainably produced, high-quality and long-lasting goods can benefit greatly from these findings.

Social implications

This paper shows that sustainable marketing campaigns can more easily motivate consumers to voluntarily reduce their consumption for the benefit of society and the environment if a high level of market-control empowerment can be communicated to them.

Originality/value

This study provides differentiated new insights into the roles of consumer empowerment, i.e. both decision-control empowerment and market-control empowerment, and the value of materialism to frame specific relationships between different anti-consumption types and various well-being states.

Details

European Journal of Marketing, vol. 57 no. 4
Type: Research Article
ISSN: 0309-0566

Keywords

Available. Open Access. Open Access
Article
Publication date: 29 April 2022

Osman El-Said, Heba Aziz, Maryam Mirzaei and Michael Smith

It has been more than 20 years since the idea of binding multinational corporations directly to international law was abandoned. Since then, concerned actors have sought to manage…

4315

Abstract

Purpose

It has been more than 20 years since the idea of binding multinational corporations directly to international law was abandoned. Since then, concerned actors have sought to manage corporate conduct through voluntary regulation. However, little is known about the instruments produced in this regard. This study aims to understand the properties of the instruments that govern or regulate corporate social responsibility at the international level.

Design/methodology/approach

Systematic literature review and content analysis methods were combined to compile a list of 229 international corporate social responsibility instruments (ICSRIs) produced by intergovernmental (IGOs) and international nongovernmental (INGOs) organizations. These instruments were categorized according to an adapted classification framework.

Findings

The majority of instruments from our sample are produced by INGOs, focus on management activities and are applicable to specific industries. The most common issues addressed by the instruments are related to worker protection, human rights, governance and the environment. A limited number of instruments specify stakeholders’ involvement or feature an external orientation. Instruments rarely address issues related to product quality and safety, economic contribution or social performance.

Practical implications

Without a comprehensive overview, it has been difficult to develop broad-based understandings about voluntary regulation as a mechanism for controlling corporate conduct internationally. This study’s findings offer valuable insights, allowing policymakers and industry practitioners to understand the effectiveness of, and make appropriate enhancements to, ICSRIs.

Social implications

By enhancing ICSRIs to address the limitations highlighted in the current study, multinational corporations can be induced into contributing more productively to the sustainable development of the societies they impact and play a greater role in the realization of the Sustainable Development Goals.

Originality/value

Previous research has largely concentrated on analyzing small numbers of carefully selected instruments in a conceptual or descriptive approach. In contrast, this study represents a novel approach of systematic compilation and quantitative classification for a comprehensive list of ICSRIs.

Details

Sustainability Accounting, Management and Policy Journal, vol. 13 no. 4
Type: Research Article
ISSN: 2040-8021

Keywords

Access Restricted. View access options
Article
Publication date: 1 January 1980

Thomas N. Gladwin and Ingo Walter

Multinationals operate in a setting where the rules of the game are ambiguous, contradictory, and subject to rapid change. The consequences of such conflict for the firm can be…

812

Abstract

Multinationals operate in a setting where the rules of the game are ambiguous, contradictory, and subject to rapid change. The consequences of such conflict for the firm can be serious, ranging from nationalization and expropriation to increased operating costs and losses of market share, managerial control, and valuable executive time. Here are five ways of coping management may try.

Details

Journal of Business Strategy, vol. 1 no. 1
Type: Research Article
ISSN: 0275-6668

Access Restricted. View access options
Article
Publication date: 29 September 2020

Marie-Christin Schmidt, Johannes W. Veile, Julian M. Müller and Kai-Ingo Voigt

The study analyses how Industry 4.0 and underlying digital technologies influence the design of ecosystems in global value chains (GVCs).

1621

Abstract

Purpose

The study analyses how Industry 4.0 and underlying digital technologies influence the design of ecosystems in global value chains (GVCs).

Design/methodology/approach

A qualitative-exploratory research design is used. It deploys a multiple case study based on semi-structured interviews with 73 German managers of multinational enterprises. Applying a qualitative content analysis, the expert interviews are inductively analyzed and triangulated with secondary data to develop a synthesized data structure.

Findings

The analysis reveals a general tendency towards decentralization of value chain activities. Depending on the nature of each activity and several contextual factors, however, hybrids between centralization and decentralization of processes can be observed in Industry 4.0 environments. Consequences for global ecosystems are altered cooperation with business partners, new organizational forms and novel market environments.

Research limitations/implications

Given inherent limitations in scope and methodology, the study calls for cross-industry and cross-country analyses. Further studies should research implications of Industry 4.0 changes in ecosystems and GVCs, and the role digital platforms can play in this context.

Practical implications

The results help companies to analyze and adapt their role in ecosystems and associated GVC activities to Industry 4.0 environments, thus staying competitive in changing market conditions.

Originality/value

This study is among the first to empirically investigate the influence of Industry 4.0 on ecosystems embedded in GVCs. Reflecting existing company environments, it adds an international and company-external perspective to Industry 4.0 research.

Details

The International Journal of Logistics Management , vol. 32 no. 4
Type: Research Article
ISSN: 0957-4093

Keywords

Access Restricted. View access options
Book part
Publication date: 3 July 2018

Soha Bou Chabke and Gloria Haddad

The aim of this research is to study the implications of the human resources management practices on corruption in humanitarian aid as the phenomenon is under-researched (Akbar &…

Abstract

The aim of this research is to study the implications of the human resources management practices on corruption in humanitarian aid as the phenomenon is under-researched (Akbar & Vujic, 2014; Melo & Quinn, 2015) and considered to be a hot topic since the determinants of corruption from an individual perspective have been scarcely discussed in the non-profit sector (Epperly & Lee, 2015; Mohiuddin & Dulay, 2015).

This research adopts grounded theory as a method and builds upon long experience in the humanitarian aid sector to generate theory from field observations and from 30 interviews conducted with respondents working in humanitarian organisations. The data collected from interviews was compared to observations data, leading the way to validating and expanding the findings.

The findings of this study are related to human resources administration weaknesses which appear to be directly linked to corruption in humanitarian aid. These weaknesses include issues in relation to Terms of Reference and organisational charts, irregularities in staff selection procedures, the short-termism of contracts, poor talent management, a lack of ethics awareness and mismanaged cultural diversity.

This study suffers from a few limitations pertaining to the sensitivity of the context, confidentiality issues, retrospection in some cases and possible bias resulting from staff frustration. These were dealt with through ensuring interviewees' utmost anonymity in publishing the results and through cross-checking answers of respondents from within the same organisation.

This research proposes a corruption preventive model which serves as a tool driving better human resources practices in humanitarian aid, and highlights the dangerous impact of corruption and raises awareness among humanitarian aid managers and workers about the importance of preventing it so that more vulnerable people are reached and that the donated money fulfils its intended target. The chapter brings value to research on humanitarian aid as it considers the corruption phenomenon with new lenses; focusing on individuals rather than on systems thus opening new horizons of study away from the traditional stream of research on service delivery.

Details

Hybridity in the Governance and Delivery of Public Services
Type: Book
ISBN: 978-1-78743-769-2

Keywords

Access Restricted. View access options
Article
Publication date: 1 June 2003

Barbara F.H. Allen

Discusses collection building of contemporary German belles‐lettres and introduces 20 contemporary German‐language writers of the younger generation, presenting their…

923

Abstract

Discusses collection building of contemporary German belles‐lettres and introduces 20 contemporary German‐language writers of the younger generation, presenting their bio‐bibliographies. Librarians who are not already collecting these authors might consider expanding their German literature collections by adding some of the works listed.

Details

Collection Building, vol. 22 no. 2
Type: Research Article
ISSN: 0160-4953

Keywords

Access Restricted. View access options
Article
Publication date: 2 October 2024

Ingo Karl Bosse, Daniela Nussbaumer and Dennis Christian Hövel

Digital inequalities are pressing concerns, especially for students in need of special educational support. In recent years, numerous reviews have been published on the use of…

87

Abstract

Purpose

Digital inequalities are pressing concerns, especially for students in need of special educational support. In recent years, numerous reviews have been published on the use of learning technologies (LT) in inclusive and special education. They mostly provide findings for specific groups, technologies, and countries. This systematic review aims to identify changes in the use of information and communication technologies (ICT) as LT that evolved globally in inclusive and special education over the last 12 years.

Design/methodology/approach

Web of Science, Scopus, and EBSCOhost were systematically searched for publications for 2012 to 2023. Only peer-reviewed English publications were included to ensure a comprehensive review. The findings of the 421 included papers were then analysed, reflecting diverse perspectives at the technology, learners, teachers, and institutional levels.

Findings

The most used devices were computers, iPads/tablets, and specifically designed apps. More studies were conducted in separate settings than in inclusive ones. The primary participant groups were students on the autism spectrum. More than half the research publications were related to technology use. Technology development was the most common research objective, with approximately 40% of test hypotheses based on standardised tests or observations.

Research limitations/implications

By shifting the focus from specific disabilities to a more usability-based approach, we can envision a future in which the quality of education for all students is substantially improved.

Practical implications

LT have the potential to significantly contribute to creating the least restrictive learning environment for students in need of special educational support. One step for practitioners is to consider the interdependencies between the different dimensions of heterogeneity relevant to digital inclusion. In order to solve these complex pedagogical tasks appropriately, multidisciplinary cooperation is necessary, involving experts in technical, pedagogical, didactic and inclusive education in digitalised societies.

Originality/value

All data were meticulously collected and analysed to ensure credibility and originality.

Details

Journal of Enabling Technologies, vol. 18 no. 2/3
Type: Research Article
ISSN: 2398-6263

Keywords

Access Restricted. View access options
Article
Publication date: 30 November 2021

Christian V. Baccarella, Lukas Maier, Martin Meinel, Timm F. Wagner and Kai-Ingo Voigt

Recent technological and social changes have challenged manufacturing firms to remain competitive in increasingly dynamic markets. A way of facing these challenges is to foster…

1551

Abstract

Purpose

Recent technological and social changes have challenged manufacturing firms to remain competitive in increasingly dynamic markets. A way of facing these challenges is to foster organizational structures that encourage creativity. Although the general importance of organizational creativity for market success is undeniable, few studies on manufacturing firms have provided a nuanced view of how this relationship is affected by firm-external factors (e.g. different levels of market dynamism) and whether and how this leads to greater market success.

Design/methodology/approach

This research uses survey data from 255 chief executive officers (CEOs) and top managers of manufacturing firms in Germany. The authors performed different regression analyses to test for direct, mediation, moderation and moderated mediation effects.

Findings

The findings show that, in highly dynamic markets, organizational support for creativity indeed helps manufacturing firms to remain competitive by positively influencing firms' innovation performance, which subsequently results in improved market performance. By contrast, in markets with low dynamism, organizational support for creativity has no impact on firms' innovation and market performance.

Research limitations/implications

From a theoretical perspective, this study introduces market dynamism as a novel, so-far underexplored firm-external factor that moderates the relationship between organizational support for creativity and innovation and market performance. This research thus enhances the understanding of the dynamics of organizational creativity and its effects on innovation and market performance in an organizational context of manufacturing firms.

Practical implications

In general, this research emphasizes the importance of establishing a creativity-supporting environment to enhance innovation and market performance. Most importantly, this relationship depends on whether firms are active in highly dynamic or stable markets. Managers should thus consider the level of (future) market dynamism when making decisions about creativity-supporting work environments.

Originality/value

This research provides novel insights into how organizational support for creativity influences innovation and market performance in the manufacturing industry and introduces market dynamism as an important moderating factor.

Details

Journal of Manufacturing Technology Management, vol. 33 no. 4
Type: Research Article
ISSN: 1741-038X

Keywords

Access Restricted. View access options
Article
Publication date: 17 April 2009

Barbara F.H. Allen

The purpose of this paper is to introduce librarians, faculty, and other interested individuals to contemporary German literature in English translation.

796

Abstract

Purpose

The purpose of this paper is to introduce librarians, faculty, and other interested individuals to contemporary German literature in English translation.

Design/methodology/approach

German‐language authors born in 1950 or later and listed on the Contemporary Living Authors Comprehensive List developed by the German vendor Otto Harrassowitz are searched in OCLC's WorldCat database to determine the existence of English translations. A bio‐bibliographical list is then developed featuring all contemporary German‐language authors who have achieved an English language translation of at least one of their literary works.

Findings

Of the approximately 1,400 writers on Harrassowitz's comprehensive list, a surprisingly large number of almost 80 authors of the younger generation (born in 1950 or later) have been translated into English.

Originality/value

This bio‐bibliography of contemporary German belles lettres (of the younger generation) in English translation is the first of its kind. It can be used by librarians to check their current library holdings and to expand their collections of German literature in English translation.

Details

Collection Building, vol. 28 no. 2
Type: Research Article
ISSN: 0160-4953

Keywords

1 – 10 of 14
Per page
102050