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Article
Publication date: 5 September 2016

Andrea Andrisani, Diego Angeli and Antonio Dumas

The purpose of this paper is to define an optimal pitching profile for the blades of a cycloidal rotor which minimizes the mean power consumption for a given mean thrust of the…

189

Abstract

Purpose

The purpose of this paper is to define an optimal pitching profile for the blades of a cycloidal rotor which minimizes the mean power consumption for a given mean thrust of the rotor.

Design/methodology/approach

A simple analytical model of the kinematics and aerodynamics of a cycloidal rotor is defined first to obtain expressions for thrust and power depending on the pitching profile and geometrical parameters of the rotor. Then, Lagrange optimization is applied to obtain the optimal pitching schedule under hovering conditions. Finally, results of the theoretical analysis are compared with those of a two-dimensional computational fluid dynamics (CFD) model.

Findings

Results of the optimization suggest that the optimal profile is a combination of sinusoidal functions. It is shown that the adoption of the optimal pitching schedule could improve the power efficiency of the rotor by approximately 25 per cent.

Practical implications

The possibility to increase the efficiency of a cycloidal rotor by acting on its pitching schedule could be a significant factor of success for this alternative propulsion concept.

Originality/value

The present work represents the first attempt at a definition of an optimal pitching profile for a cycloidal rotor. Moreover, although being carried out on the basis of simplified analytical considerations, the present investigation sets a methodological framework which could be successfully applied to the design of similar kinds of systems.

Details

Aircraft Engineering and Aerospace Technology, vol. 88 no. 5
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 6 June 2016

Carolina Resende Haddad, Diego Hernando Florez Ayala, Mauricio Uriona Maldonado, Fernando Antônio Forcellini and Álvaro Guillermo Rojas Lezana

The purpose of this paper is to present a proposal for process improvement at the Department of Social Responsibility of a Colombian process-based organization, called CAJASAN…

2675

Abstract

Purpose

The purpose of this paper is to present a proposal for process improvement at the Department of Social Responsibility of a Colombian process-based organization, called CAJASAN. The department has four main processes: Foniñez (children fund), Fosfec (unemployment fund), Project Management and International Cooperation and Network Management and Alliances. The objective of this paper is to suggest an improvement in these processes through BPM application.

Design/methodology/approach

The authors followed the BPM method proposed by Dumas et al. (2013) for process improvement composed by process identification; process discovery; process analysis; process redesign; process implementation and process monitoring and controlling. The authors modeled the processes by using the software Bizagi®.

Findings

The actual processes work in an independent way and with no communication. Moreover, the department experiences short-term problems solutions and process inefficiency. It was possible to suggest changes in three out of four processes.

Practical implications

Implementing BPM in non-profit organizations (NPO) addresses many of the current management challenges faced by such organizations. NPO’s researchers and practitioners should take BPM as a potential way to help in professionalizing them.

Originality/value

The authors bring an original case study about a Colombian NPO. As a process-oriented organization, the authors use BPM as a management tool to solve many challenges that the company faces nowadays.

Details

Business Process Management Journal, vol. 22 no. 3
Type: Research Article
ISSN: 1463-7154

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Article
Publication date: 21 August 2017

Antonio D’Amato

Empirical evidence on the relation between female involvement at the head of a company and firm performance remains inconclusive. This study aims to disentangle the existing…

902

Abstract

Purpose

Empirical evidence on the relation between female involvement at the head of a company and firm performance remains inconclusive. This study aims to disentangle the existing evidence by exploring the moderating role of family firm status.

Design/methodology/approach

The study analyzes the moderating role of family firm status on the relation between gender diversity and firm performance among a sample of 88 Italian wine firms from Campania region during the 2007-2014 period. This work uses random effects panel data regression and tests the robustness of the results using alternative econometric techniques. Performance is measured in terms of profitability.

Findings

The findings reveal that women in top positions do not affect firm performance. However, it is found that this relation is significantly moderated by family firm status. Specifically, compared to high family-controlled firms, female involvement negatively impacts firm performance in low family-controlled firms.

Research limitations/implications

From a theoretical standpoint, the results enable a more nuanced interpretation of the relationship between female involvement and firm performance. From a managerial perspective, the results highlight conditions that may promote the role of women in business.

Originality/value

This paper provides insights into the relation between gender diversity and firm performance by exploring the moderating role of family firm status – a novel approach in the management and wine business literature.

Details

International Journal of Wine Business Research, vol. 29 no. 3
Type: Research Article
ISSN: 1751-1062

Keywords

Available. Open Access. Open Access
Book part
Publication date: 7 September 2023

Ellen Ernst Kossek, Brenda A. Lautsch, Matthew B. Perrigino, Jeffrey H. Greenhaus and Tarani J. Merriweather

Work-life flexibility policies (e.g., flextime, telework, part-time, right-to-disconnect, and leaves) are increasingly important to employers as productivity and well-being…

Abstract

Work-life flexibility policies (e.g., flextime, telework, part-time, right-to-disconnect, and leaves) are increasingly important to employers as productivity and well-being strategies. However, policies have not lived up to their potential. In this chapter, the authors argue for increased research attention to implementation and work-life intersectionality considerations influencing effectiveness. Drawing on a typology that conceptualizes flexibility policies as offering employees control across five dimensions of the work role boundary (temporal, spatial, size, permeability, and continuity), the authors develop a model identifying the multilevel moderators and mechanisms of boundary control shaping relationships between using flexibility and work and home performance. Next, the authors review this model with an intersectional lens. The authors direct scholars’ attention to growing workforce diversity and increased variation in flexibility policy experiences, particularly for individuals with higher work-life intersectionality, which is defined as having multiple intersecting identities (e.g., gender, caregiving, and race), that are stigmatized, and link to having less access to and/or benefits from societal resources to support managing the work-life interface in a social context. Such an intersectional focus would address the important need to shift work-life and flexibility research from variable to person-centered approaches. The authors identify six research considerations on work-life intersectionality in order to illuminate how traditionally assumed work-life relationships need to be revisited to address growing variation in: access, needs, and preferences for work-life flexibility; work and nonwork experiences; and benefits from using flexibility policies. The authors hope that this chapter will spur a conversation on how the work-life interface and flexibility policy processes and outcomes may increasingly differ for individuals with higher work-life intersectionality compared to those with lower work-life intersectionality in the context of organizational and social systems that may perpetuate growing work-life and job inequality.

Details

Research in Personnel and Human Resources Management
Type: Book
ISBN: 978-1-83753-389-3

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Article
Publication date: 8 April 2024

Marcus Wayne Johnson, Anthony Johnson, Langston Clark, Jonathan E. Howe, Traveon Jefferson, Dionte McClendon, Brandon Crooms and Daniel J. Thomas

This study aims to stimulate scholarly attention and practical application pertaining to individuals recognized as “Docs.” Through conducting a comprehensive analysis and…

50

Abstract

Purpose

This study aims to stimulate scholarly attention and practical application pertaining to individuals recognized as “Docs.” Through conducting a comprehensive analysis and acquiring a profound understanding of its many connotations, the objective is to shift attitudes and approaches concerning those who are seen to possess knowledge and value within society.

Design/methodology/approach

For this study, culturally relevant pedagogies were used as theoretical frameworks in addition to Sankofa and concept explication being used as methodologies.

Findings

The authors identified three themes: (1) honorary cultural practice-community nomination of “professahs” and “docs,” (2) (Black) robinhoods – cultural signifiers of distinction and relatability and (3) docs as catalysts – elevating community via consciousness, trust and mentorship as significant understandings of this distinction.

Originality/value

The study emphasizes the importance of “Docs” in both academic and social contexts. The role of “Docs” serves to alleviate potential conflicts of being a Black intellectual. This study further reveals the ways in which Docs align with, promote or possibly undermine established frameworks of thought. Finally, this study provides institutions with opportunities to consider strategies for the utilization, recognition and integration of individuals who are frequently overlooked or undervalued.

Details

Journal for Multicultural Education, vol. 18 no. 4
Type: Research Article
ISSN: 2053-535X

Keywords

Available. Content available
Article
Publication date: 21 November 2008

434

Abstract

Details

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

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Book part
Publication date: 12 September 2017

Ebony M. Duncan-Shippy, Sarah Caroline Murphy and Michelle A. Purdy

This chapter examines the framing of the Black Lives Matter (BLM) Movement in mainstream media. An analytic sample of 4,303 articles collected from the Dow Jones Factiva database…

Abstract

This chapter examines the framing of the Black Lives Matter (BLM) Movement in mainstream media. An analytic sample of 4,303 articles collected from the Dow Jones Factiva database reveals variation in depth, breadth, and intensity of BLM coverage in the following newspapers between 2012 and 2016: The St. Louis Post-Dispatch, The New York Times, The Washington Post, The Wall Street Journal, and Al Jazeera English. We review contemporary literature on racial inequality and employ Media Framing and Critical Race Theory to discuss the implications of our findings on public perceptions, future policy formation, and contemporary social protest worldwide.

Details

The Power of Resistance
Type: Book
ISBN: 978-1-78350-462-6

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Article
Publication date: 5 June 2018

Nicola Miglietta, Enrico Battisti, Elias Carayannis and Antonio Salvi

The purpose of this paper is to investigate the relationship between capital structure and business process management (BPM) within ambidextrous firms. In particular, referring to…

958

Abstract

Purpose

The purpose of this paper is to investigate the relationship between capital structure and business process management (BPM) within ambidextrous firms. In particular, referring to the listed companies in the Mercato Telematico Azionario (MTA) and Mercato degli Investment Vehicles (MIV) markets with large- and mid-sized capitalization, divided into ambidextrous and non-ambidextrous companies, the authors examined the capital structure to fill a gap in the current literature.

Design/methodology/approach

This study uses a mixed-method sequential exploratory design. In particular, a qualitative study was conducted to identify some Italian-listed companies, called ambidextrous firms, which have implemented incremental (exploitative) and radical (explorative) innovations in an ambidexterity perspective of process management. A quantitative study was designed to provide insights into the different degrees of leverage of the listed companies selected by the qualitative analysis.

Findings

The research is based on an empirical analysis undertaken with 69 companies listed on Italian markets (starting from the MTA and MIV Italy 100 – large- and mid-sized capitalization). In particular, the authors highlight 11 companies that, based on the literature, can be defined as ambidextrous organizations. These firms, in each year analyzed (2014, 2015, and 2016), have more leverage than non-ambidextrous ones. Considering that firms today need to constantly revisit their portfolio of debt and equity, ambidextrous organizations could evaluate the largest debt available in order to implement new BPM tools.

Originality/value

To the authors’ knowledge, this is the first exploratory study based on capital structure and the simultaneous exploration and exploitation of knowledge (ambidexterity) that also is informed by a BPM perspective. The paper presents evidence from Italian-listed companies that are referred to as ambidextrous and have different degrees of leverage.

Details

Business Process Management Journal, vol. 24 no. 5
Type: Research Article
ISSN: 1463-7154

Keywords

Available. Open Access. Open Access
Article
Publication date: 14 January 2020

Antonio Armillotta

This paper aims to investigate the feasibility of adding macro-textures to triangle meshes for additive manufacturing (AM) focusing on possible time and quality issues in both…

669

Abstract

Purpose

This paper aims to investigate the feasibility of adding macro-textures to triangle meshes for additive manufacturing (AM) focusing on possible time and quality issues in both software processing and part fabrication.

Design/methodology/approach

A demonstrative software tool was developed to apply user-selected textures to existing meshes. The computational procedure is a three-dimensional extension of the solid texturing method used in computer graphics. The tool was tested for speed and quality of results, considering also the pre- and post-processing operations required. Some textured meshes were printed by different processes to test build speed and quality.

Findings

The tool can handle models with realistic complexity in acceptable computation times. Parts are built without difficulties or extra-costs achieving a good aesthetic yield of the texture.

Research limitations/implications

The tool cannot reproduce sample patterns but requires the development of a generation algorithm for different type of textures. Mesh processing operations may take a long time when very fine textures are added to large parts.

Practical implications

Direct texturing can help obtain parts with aesthetic or functional textures without the need for surface post-treatments, which can be especially difficult and expensive for plastic parts.

Originality/value

The proposed method improves the uniformity and consistency of textures compared to existing approaches, and can support future systematic studies on the detail resolution of AM processes.

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Article
Publication date: 22 March 2013

Anabel Fernández‐Mesa, Joaquín Alegre‐Vidal, Ricardo Chiva‐Gómez and Antonio Gutiérrez‐Gracia

The aim of this paper is to present design management as a dynamic capability and to analyze its mediating role between organizational learning capability and product innovation…

4469

Abstract

Purpose

The aim of this paper is to present design management as a dynamic capability and to analyze its mediating role between organizational learning capability and product innovation performance in small and medium enterprises (SMEs).

Design/methodology/approach

Structural equation modeling is used to test the research hypotheses based on data from the Italian and Spanish ceramic tile industries. The data are derived from the responses of 182 companies (50 percent of the target population) to a questionnaire addressed to Product Development Managers and Human Resource Managers.

Findings

The results suggest that organizational learning capability enhances product innovation through the mediation of design management capability. The authors find an interesting interplay between organizational learning, design management capability and product innovation that can be very useful to better understand how to improve innovation performance. This finding shows that design management, as a dynamic capability, emerges from learning and allows the firm to adapt to environmental changes.

Originality/value

Several works have studied dynamic capabilities but without specifying the nature of these capabilities. More recent empirically‐based studies conceptualize and refer to specific dynamic capabilities. In this paper, the authors present design management as a dynamic capability. This study aims also to develop a better understanding of how organizational learning capability impacts on the product innovation performance of SMEs and how this relationship is mediated by design management capability.

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