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1 – 10 of 12
Article
Publication date: 25 February 2014

Anas Obeidat, Teis Schnipper, Kristian M. Ingvorsen, Sajjad Haider, Knud Erik Meyer, Stefan Mayer and Jens H. Walther

– The purpose of this paper is to study the effect of piston position on the in-cylinder swirling flow in a simplified model of a large two-stroke marine diesel engine.

Abstract

Purpose

The purpose of this paper is to study the effect of piston position on the in-cylinder swirling flow in a simplified model of a large two-stroke marine diesel engine.

Design/methodology/approach

Large eddy simulations with four different models for the turbulent flow are used: a one-equation model, a dynamic one-equation model, a localized dynamic one-equation model and a mixed-scale model. Simulations are carried out for two different geometries corresponding to 100 and 50 percent open scavenge ports.

Findings

It is found that the mean tangential profile inside the cylinder changes qualitatively with port closure from a Lamb-Oseen vortex profile to a solid body rotation, while the axial velocity changes from a wake-like profile to a jet-like profile. The numerical results are compared with particle image velocimetry measurements, and in general, the authors find a good agreement.

Research limitations/implications

Considering the complexity of the real engine, the authors designed the engine model using the simplest configuration possible. The setup contains no moving parts, the combustion is neglected and the exhaust valve is discarded.

Originality/value

Studying the flow in a simplified engine model, the setup allows studies of fundamental aspects of swirling flow in a uniform scavenged engine. Comparing the four turbulence models, the local dynamic one-equation model is found to give the best agreement with the experimental results.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 24 no. 2
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 21 August 2009

Jens H. Walther and Ivo F. Sbalzarini

The purpose of this paper is to present large‐scale parallel direct numerical simulations of granular flow, using a novel, portable software program for discrete element method…

Abstract

Purpose

The purpose of this paper is to present large‐scale parallel direct numerical simulations of granular flow, using a novel, portable software program for discrete element method (DEM) simulations.

Design/methodology/approach

Since particle methods provide a unifying framework for both discrete and continuous systems, the program is based on the parallel particle mesh (PPM) library, which has already been demonstrated to provide transparent parallelization and state‐of‐the‐art parallel efficiency using particle methods for continuous systems.

Findings

By adapting PPM to discrete systems, results are reported from three‐dimensional simulations of a sand avalanche down an inclined plane.

Originality/value

The paper demonstrates the parallel performance and scalability of the new simulation program using up to 122 million particles on 192 processors, employing adaptive domain decomposition and load balancing techniques.

Details

Engineering Computations, vol. 26 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

Book part
Publication date: 1 January 2014

Lasse Mertins and Lourdes Ferreira White

This paper proposes and tests a model to explain the outcomes of three different information presentation formats. Based on cognitive fit theory, information visualization formats…

Abstract

Purpose

This paper proposes and tests a model to explain the outcomes of three different information presentation formats. Based on cognitive fit theory, information visualization formats that best fit task characteristics are expected to lead to improved decision-making outcomes. We apply the Judgment and Decision-Making framework (Bonner, 2008) to investigate how certain factors can impact decision quality.

Design/methodology/approach

This study tests whether certain production variance presentation formats (percentages, dollar amounts, and schematic faces), task complexity, understanding of the presentation format, motivation, and effort increase the accuracy of a supervisor’s bonus calculation. A total of 281 students and professionals participated in this experiment. Their responses were examined using regression analysis.

Findings

Our results indicate that individuals mostly prefer the percentages presentation format and that the use of the percentages presentation format, a lower level of task complexity, and a better understanding of the variance presentation format lead to more accurate calculations in the experimental task.

Research implications

Our study provides a call for further research on factors that influence the choice of presentation format as a potentially fruitful area for management accounting researchers.

Practical implications

We exhort practicing management accountants to exert direct influence on employees’ decision making through the use of variance presentation formats that fit their tasks and promote understanding.

Originality/value

Our experiment introduced two major innovations: it uses an interactive data visualization approach allowing subjects to select their preferred presentation format; and it focuses on production variances, a topic that has received less attention in the academic managerial accounting literature, but is still very relevant to practitioners.

Article
Publication date: 18 March 2019

Ruey-Ching Lin, Tsung-Kang Chen, Yi-Jie Tseng and Chih-Kai Chang

The purpose of this study is to explore whether pension plan reporting readability affects earnings volatility. Moreover, as SFAS 158 requires firms to fully recognize their…

Abstract

Purpose

The purpose of this study is to explore whether pension plan reporting readability affects earnings volatility. Moreover, as SFAS 158 requires firms to fully recognize their funded status on the balance sheet, the firms’ pension liabilities (inside debts) and financing ability have the corresponding change. This study further investigates whether pension plan reporting readability affects earnings volatility from the SFAS 158 and funded status perspectives.

Design/methodology/approach

This study follows Li (2008), Lehavy et al. (2011) and Rennekamp (2012) to use the FOG and SMOG variables as the readability proxies and investigates whether pension plan reporting readability affects earnings volatility from the perspectives of inside debts and SFAS 158 by using a sample of 3,077 American firms from the year 2006 to 2009.

Findings

Empirical results of this study show that firms with low readability of pension plan reporting have high earnings volatility, revealing that less readable pension plan reporting increases the assessed variance of a firm’s inside debts, financing flexibility, investment ability and therefore profitability. In addition, the implement of SFAS 158 enhances the effect of pension plan reporting readability on earnings volatility. Moreover, the authors also find that the funded status plays a moderating role for the effect of pension plan reporting readability on earnings volatility. Finally, the results are robust to endogeneity issue.

Research limitations/implications

Earnings stability measures how consistently earnings have been generated over time, and its importance has been acknowledged by most firms. For example, prior literature has documented that manipulating financial reporting to smooth earnings is becoming a business common practice (Burgstahler et al., 2006; Liu and Espahbodi, 2014). The empirical results suggest that pension plan reporting readability is a significant determinant of earnings volatility.

Practical implications

As a practical implication, this study points out that manipulations of the pension reporting readability are not costless. It incurs the costs of earnings instability.

Social implications

This study indicates that the issuance of SFAS 158 makes firms more likely to engage in pension plan readability manipulation. As a result, it has policy implication that the regulator should consider how the policy change alters the firm financial reporting behavior.

Originality/value

The empirical results suggest that firms may be more likely to engage in obfuscating pension plan disclosure after FASB’s issuance of SFAS 158. This would further increase outside investors’ assessed variance for inside debts and earnings volatilities. When policymakers require firms to recognize their funded status in statement of financial position, they should consider the costs or benefits that the firm manager face and, therefore, how this policy change alter the firm financial reporting behavior.

Details

Pacific Accounting Review, vol. 31 no. 1
Type: Research Article
ISSN: 0114-0582

Keywords

Article
Publication date: 1 January 1954

Aarhus Kommunes Biblioteker (Teknisk Bibliotek), Ingerslevs Plads 7, Aarhus, Denmark. Representative: V. NEDERGAARD PEDERSEN (Librarian).

Abstract

Aarhus Kommunes Biblioteker (Teknisk Bibliotek), Ingerslevs Plads 7, Aarhus, Denmark. Representative: V. NEDERGAARD PEDERSEN (Librarian).

Details

Aslib Proceedings, vol. 6 no. 1
Type: Research Article
ISSN: 0001-253X

Open Access
Article
Publication date: 12 April 2022

Jens Jörn Dahlgaard and Loukas N. Anninos

This study aims to reflect on quality, sustainability and resilience as emerging organisational priorities within total quality management (TQM) and organisational excellence.

4315

Abstract

Purpose

This study aims to reflect on quality, sustainability and resilience as emerging organisational priorities within total quality management (TQM) and organisational excellence.

Design/methodology/approach

The paper uses a conceptual approach based on reflection and theoretical studies on the philosophical foundations of quality, excellence, resilience and sustainability as cornerstones for organisational excellence. Bearing in mind that sustainable excellence rests upon a combination of systemic and soft issues that define organisational ability for resilience and sustainability, there is a need to analyse and reflect on short business cases from world-leading companies and further reflect on the fundamental principles, which have helped such companies to survive, grow and sustain. This study includes such a business case – the LEGO case. In addition, a Japanese case has been included. Japanese training material on human motivation developed in the 1980s exemplifies how company managers were trained, at that time, to understand and practice human motivation, excellence principles and tools.

Findings

Organisational excellence constitutes an evolving concept as the world becomes more chaotic and interconnected with multiple disruptive shocks. Organisational excellence challenges the inflexibilities of Newtonian mindsets, recognising the paramount importance of interactions and further underlining the significance of invisible elements such as human potentiality, motivation and values that formulate the principles of organisational excellence.

Originality/value

The paper investigates the notions of quality, resilience and sustainability and their relation to motivation and organisational excellence within the framework of business management and TQM. A world-leading company – LEGO – will be used to exemplify the theoretical findings together with the Japanese Motivation Training Programme case.

Details

International Journal of Quality and Service Sciences, vol. 14 no. 3
Type: Research Article
ISSN: 1756-669X

Keywords

Book part
Publication date: 18 July 2007

Kimberly A. McDuffie, Thomas E. Scruggs and Margo A. Mastropieri

Thirty-two qualitative research reports on co-teaching in inclusive classrooms, identified through a comprehensive literature search, are reviewed. Studies have included…

Abstract

Thirty-two qualitative research reports on co-teaching in inclusive classrooms, identified through a comprehensive literature search, are reviewed. Studies have included significant diversity in grade level, geographical location, setting, and took place in three different countries. Overall, teachers and administrators reported a high degree of satisfaction with co-teaching. However, a number of needs were also addressed, including administrative support, appropriate caseloads, planning time, student skill level, and co-teacher compatibility. Implications for research and practice are discussed.

Details

International Perspectives
Type: Book
ISBN: 978-1-84950-503-1

Article
Publication date: 1 August 2005

Jens Gammelgaard and Thomas Ritter

Proposes that multinational companies (MNCs) establish virtual communities of practice, i.e. intranet‐based collaborative forums, and thereby benefit from a combination of

3736

Abstract

Purpose

Proposes that multinational companies (MNCs) establish virtual communities of practice, i.e. intranet‐based collaborative forums, and thereby benefit from a combination of codification and personification strategies in order to solve knowledge retrieval problems for the knowledge worker.

Design/methodology/approach

Based on an overview of the problems related to retrieval (i.e. individual decoding and interpretation of knowledge), a literature review on individual memory, databases, social capital and virtual communities of practice reveals a knowledge retrieval means matrix, paying respect to retrieval processes.

Findings

Virtual communities of practice are suggested as a strategy for internationally‐operating corporations that cannot develop regular face‐to‐face contact between employees, but still need some degree of personification for efficient knowledge transfers.

Research limitations/implications

Being a conceptual paper, quantitative/qualitative integration will enrich the debate further. Also, the very narrow focus on firms' information systems excludes important aspects such as knowledge creation, transfer stickiness, and application of retrieved knowledge.

Practical implications

The knowledge retrieval means matrix is a useful instrument for managers to map and further develop their organizations for better utilization of the organizational memory.

Originality/value

The combined tripartition of virtual communities, the combination of codification and personalization, and knowledge retrieval is, to the best of the authors' knowledge, presented for the first time.

Details

Journal of Knowledge Management, vol. 9 no. 4
Type: Research Article
ISSN: 1367-3270

Keywords

Article
Publication date: 29 June 2010

Julia Oberschmidt, Jutta Geldermann, Jens Ludwig and Meike Schmehl

The purpose of this paper is to elaborate a multi‐criteria methodology for the performance assessment of energy supply technologies, which also takes into account the dynamics of…

2210

Abstract

Purpose

The purpose of this paper is to elaborate a multi‐criteria methodology for the performance assessment of energy supply technologies, which also takes into account the dynamics of technological change.

Design/methodology/approach

The approach chosen is based on the multi‐criteria outranking methodology Preference Ranking Organisation METHod for Enrichment Evaluations (PROMETHEE), which is linked to the concept of technology's life cycle by assigning criteria weights depending on the actual development phase of a certain technology. The modifications to the PROMETHEE algorithm are described and the modified methodology is demonstrated by evaluating heat and power supply alternatives for a municipal area in Germany.

Findings

The methodology is suitable for the evaluation of energy technologies taking into account varying preferences depending on their stage of maturity. It is a feasible alternative to other methodologies which allow for interconnections like the analytic network process. The results show that, based on a multi‐criteria life cycle approach, renewable energy technologies are competitive with conventional alternatives for supplying heat and power.

Practical implications

Appropriate methods are required to elicit life cycle‐dependent preferences. Decision support should help decision makers (DMs) to articulate preferences according to different development phases and illustrate the results in the most meaningful way.

Originality/value

The methodology provides the basis for a comprehensive analysis of energy technologies at different life cycle stages. It can be used to support decision making in different situations and by various actors.

Details

International Journal of Energy Sector Management, vol. 4 no. 2
Type: Research Article
ISSN: 1750-6220

Keywords

Article
Publication date: 8 February 2016

Chia-Ling Cheng and Fan-Hua Kung

This paper aims to investigate whether government-mandated corporate social responsibility (CSR) engenders conservative financial reporting in emerging markets. It is expected…

3287

Abstract

Purpose

This paper aims to investigate whether government-mandated corporate social responsibility (CSR) engenders conservative financial reporting in emerging markets. It is expected that CSR plays a substitute role for governance mechanisms in reducing information asymmetry.

Design/methodology/approach

The C-Score developed by Khan and Watts (2007) was adopted to measure the degree of firm-year specific accounting conservatism. This study uses the CSR rating established by the Shanghai National Accounting Institute.

Findings

Empirical evidence indicates that the government-mandated CSR policy may be sufficient to induce conservative financial reporting. However, due perhaps to political affiliations, the evidence to support this claim is weaker for state-owned enterprises (SOEs) than for non-SOEs.

Originality/value

The findings provide a deeper understanding of the potential role of CSR in firms. The results also provide evidence on the dynamics between CSR activities and the reporting behavior of managers. These findings have important implications for investors, analysts and regulators.

Details

Review of Accounting and Finance, vol. 15 no. 1
Type: Research Article
ISSN: 1475-7702

Keywords

1 – 10 of 12