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Article
Publication date: 1 February 1992

MATTHEW R. KUHN and JAMES K. MITCHELL

The discrete element method (DEM) was used to stimulate creep processes in granular materials. The authors present the main features of the numerical model, which include a new…

Abstract

The discrete element method (DEM) was used to stimulate creep processes in granular materials. The authors present the main features of the numerical model, which include a new viscous mechanism for particle sliding, a new feedback technique for maintaining constant stress during creep, and a scaling technique that allowed monitoring the long‐term creep behaviour of a granular assembly. The creep behaviour of the numerical model exhibited the essential characteristics of soil creep—a creep rate that decreased rapidly with time, an increase in the creep rate with the applied deviator stress, and the beginning of creep rupture. The model's numerical performance is discussed, and representative results are presented.

Details

Engineering Computations, vol. 9 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 February 1995

Matthew R. Kuhn

An algorithm is presented for creating a flexible boundary to analyse three‐dimensional assemblies of spheres. It can be used to study localization phenomena in particulate…

Abstract

An algorithm is presented for creating a flexible boundary to analyse three‐dimensional assemblies of spheres. It can be used to study localization phenomena in particulate materials. The boundary is composed of adjoining triangular plate elements which are connected at their corners to the centres of neighbouring spheres. The applied external boundary stresses create traction forces on the plates, which are distributed among the plates’ particles. The boundary performed favourably in tests on a large assembly of particles when only contact and rotational damping were used. Plane strain compression tests on assemblies with flexible and periodic boundaries revealed a lower strength with the former. This result could be due to the greater restraint on particle movements produced by periodic boundaries or to the early development of a column buckling failure pattern of the assembly with flexible boundaries. No shear bands were observed in the assembly.

Details

Engineering Computations, vol. 12 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Open Access
Article
Publication date: 15 October 2015

Matthew W. Grimes

As the field of leadership education continues to prioritize learning in leadership, it is important to ask the question: What do we know about the learning process itself…

Abstract

As the field of leadership education continues to prioritize learning in leadership, it is important to ask the question: What do we know about the learning process itself? Conceptual change, a learning framework used in educational psychology, can help to explain learning in leadership. Research on conceptual change in the social sciences is emergent and ripe for further exploration. Until the results of such research are readily available, there are some pedagogical tools produced by conceptual change researchers that leadership educators might find valuable in curriculum design. This paper introduces conceptual change theory and research to leadership educators as a viable framework from which to research learning in leadership, and presents pedagogical tools that encourage deeper learning through conceptual change

Details

Journal of Leadership Education, vol. 14 no. 4
Type: Research Article
ISSN: 1552-9045

Open Access
Article
Publication date: 15 October 2018

Wiley W. Souba and Matthew H. Souba

Each of us has an implicit leadership theory, a mental model we are largely unaware of, that represents the skills, traits, and qualities that define effective leaders. Curiously…

Abstract

Each of us has an implicit leadership theory, a mental model we are largely unaware of, that represents the skills, traits, and qualities that define effective leaders. Curiously, the peer- reviewed literature has reported almost exclusively on the ideal attributes of leaders, overlooking the axiomatic and taken-for-granted views people have about the activity we colloquially refer to as “leadership.” Some of these beliefs about leadership are so common and accepted as true that challenging them is counterintuitive, yet they can limit organizational effectiveness. In this article, we discuss four common leadership misunderstandings that contribute to the fabric of our self-evident, unexamined common sense view of leadership. Challenging these misconceptions provides the opportunity to create a new paradigm of leadership, one that could enhance organizational performance.

Details

Journal of Leadership Education, vol. 17 no. 4
Type: Research Article
ISSN: 1552-9045

Open Access
Article
Publication date: 28 July 2021

John F. Hulpke and Michael P. Fronmueller

A topic currently receiving significant academic and practitioner attention is called evidence-based management. The purpose of this paper is to suggest that this approach is…

3534

Abstract

Purpose

A topic currently receiving significant academic and practitioner attention is called evidence-based management. The purpose of this paper is to suggest that this approach is sometimes over-sold and may be a fad. Additionally, evidence-based management fails to fully recognize the importance of tacit knowledge, what Kahneman calls system 1. Evidence-based management does provide tools to better use what Kahneman calls system 2, rationality. Decision-makers need to take advantage of both rational and beyond rational processes.

Design/methodology/approach

This is an essay, it is not a report of a study. At this point in time, this paper needs thinking, reflection, pondering, more than a data-based study.

Findings

Advocates promote evidence-based management in part to help avoid fads, yet evidence-based management itself has many of the characteristics of a fad. Evidence-based management is based on an objective rational view of the world and suggests highly rational methods of decision-making. However, a rational fact-based might not give sufficient credit to instinct and feelings. Decision-makers should take into account facts, evidence, when making decisions, but not ignore intuition, hunches and feelings. This study is learning that decisions use a galaxy of approaches, with both cognitive and affective flexibility.

Research limitations/implications

As with any opinion-based paper, this lacks empirical support. Proponents ask us to believe in evidence-based management. Neither we, the authors of this paper, nor the proponents of evidence-based management can empirically support the ideas offered. An additional limitation is that the paper is written in one language, English. Translation into another language might yield different meanings.

Practical implications

There are advantages for scholars and practitioners to look at the best available evidence. There can be disadvantages in overlooking non-quantifiable factors.

Social implications

Those who use evidence-based management should also take into account feelings, ethics, aesthetics, creativity, for the betterment of society. To solve wicked problems one needs more than facts and rational analysis.

Originality/value

The overwhelming majority of those writing about evidence-based management are supporters. This study offers a different view. This paper brings new ideas and new thinking to both the extensive fad literature and the huge evidence-based management literature. Evidence-based management is discussed widely. Google Scholar lists more than two million papers in 2019, 2020 and 2021 on evidence-based management. Readers of this journal should critically evaluate this popular set of ideas.

Details

International Journal of Organizational Analysis, vol. 30 no. 7
Type: Research Article
ISSN: 1934-8835

Keywords

Article
Publication date: 1 January 1971

JOHN R. SHARP

The remit for this, the last session of the Conference, was to consider the papers on specific issues given by the other speakers, to comment thereon, and to try to take a look…

Abstract

The remit for this, the last session of the Conference, was to consider the papers on specific issues given by the other speakers, to comment thereon, and to try to take a look into the future on the basis of what has been said. The views presented here are those of a librarian/information officer concerned almost solely with practical, day‐to‐day work and not directly with research activity. They therefore represent an overview as seen by one who is the recipient of the output of research workers and who must consider the applicability of research findings to systems and procedures at the point of use.

Details

Aslib Proceedings, vol. 23 no. 1
Type: Research Article
ISSN: 0001-253X

Article
Publication date: 7 July 2023

Rongying Zhao and Weijie Zhu

This paper aims to conduct a comprehensive analysis to evaluate the current situation of journals, examine the factors that influence their development, and establish an…

Abstract

Purpose

This paper aims to conduct a comprehensive analysis to evaluate the current situation of journals, examine the factors that influence their development, and establish an evaluation index system and model. The objective is to enhance the theory and methodologies used for journal evaluation and provide guidance for their positive development.

Design/methodology/approach

This study uses empirical data from economics journals to analyse their evaluation dimensions, methods, index system and evaluation framework. This study then assigns weights to journal data using single and combined evaluations in three dimensions: influence, communication and novelty. It calculates several evaluation metrics, including the explanation rate, information entropy value, difference coefficient and novelty degree. Finally, this study applies the concept of fuzzy mathematics to measure the final results.

Findings

The use of affiliation degree and fuzzy Borda number can synthesize ranking and score differences among evaluation methods. It combines internal objective information and improves model accuracy. The novelty of journal topics positively correlates with both the journal impact factor and social media mentions. In addition, journal communication power indicators compensate for the shortcomings of traditional citation analysis. Finally, the three-dimensional representative evaluation index serves as a reminder to academic journals to avoid the vortex of the Matthew effect.

Originality/value

This paper proposes a journal evaluation model comprising academic influence, communication power and novelty dimensions. It uses fuzzy Borda evaluation to address issues related to the weighing of single evaluation methods. This study also analyses the relationship of the three dimensions and offers insights for journal development in the new media era.

Details

The Electronic Library , vol. 41 no. 4
Type: Research Article
ISSN: 0264-0473

Keywords

Open Access
Article
Publication date: 15 July 2021

Christopher J. Rehm, Sasha L. Rehm and Kiah DeVona

Leader self-efficacy (LSE) is associated with leader emergence and effectiveness, and is a strong predictor of both individual and group performance. While some research exists…

Abstract

Leader self-efficacy (LSE) is associated with leader emergence and effectiveness, and is a strong predictor of both individual and group performance. While some research exists related to the connection between LSE and adult leadership, more studies are required to better understand the details surrounding LSE as it relates to adolescents. This mixed methods study examines the effects of a leadership development intervention on LSE in an eighth-grade student population. Results indicate strong support for the effectiveness of the intervention and its potential to increase youth LSE. This finding holds significant implications for educational practice, research, and the future of leadership development.

Details

Journal of Leadership Education, vol. 20 no. 3
Type: Research Article
ISSN: 1552-9045

Article
Publication date: 1 March 2010

Abstract

Details

Journal of Public Budgeting, Accounting & Financial Management, vol. 22 no. 2
Type: Research Article
ISSN: 1096-3367

Article
Publication date: 3 April 2017

Arslan Ahmad Siddiqi and Syed Zulfiqar Ali Shah

Pharmaceutical marketers and manufactures create hype of demand among patients towards a specific brand of drug or disease through drug advertisements. It induces the patients to…

Abstract

Purpose

Pharmaceutical marketers and manufactures create hype of demand among patients towards a specific brand of drug or disease through drug advertisements. It induces the patients to seek additional information of the brand and ask for its prescription generation by the physician. The paper aims to determine the attitude of the physicians towards direct to consumer advertising (DTCA) and to examine the extent of patients’ request for a specific brand which leads to actual prescription generation.

Design/methodology/approach

Quantitative study, data was collected from field setting general practicing Doctors/Physicians in the leading hospitals. Quantitative data was collected from physicians working in leading hospitals. Doctors were selected on judgmental basis with high patient turnover. Sample size consists of 250 doctors, and questionnaire were adopted from two authors. Attitude of physicians towards DTCA and information inquired by the patient are two independent variables, whereas prescription generation by the physicians is dependent variable. SPSS was tool for data analysis.

Findings

Physicians have positive attitude towards DTCA and information provision to patient and consider it supplementary in overall health-care system. Advertising induces patients to visit physician and seek appropriate treatment and get induced to ask for further information.

Research limitations/implications

Time and resources were limited.

Practical implications

First, it contributes towards knowledge, second, it shows the importance of DTCA and its impact on prescription generation and, third, it will help in devising drug advertising policy.

Social implications

Highlights the issue are of not only misuse of drugs but also malpractice of drug prescription.

Originality/value

First, it explores the impact of the attitude of physicians along with the patients’ request on prescription generation behaviour. Second, it examines the impact of inquiring additional information about specific brand from the physician that might lead to the prescription generation. Finally, there is no study from the developing countries like Pakistan.

Details

International Journal of Pharmaceutical and Healthcare Marketing, vol. 11 no. 1
Type: Research Article
ISSN: 1750-6123

Keywords

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