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Article
Publication date: 27 September 2011

Eder Costa, Nelis Luiz, Marcio da Silva, Alisson Machado and Emmanuel Ezugwu

This paper seeks to evaluate the influence of tellurium content on the machinability of the microalloyed pearlitic steel (DIN 38MnS6). Two grades of steels were used, one with…

Abstract

Purpose

This paper seeks to evaluate the influence of tellurium content on the machinability of the microalloyed pearlitic steel (DIN 38MnS6). Two grades of steels were used, one with high (27 times greater) tellurium content and one with a low tellurium content. Machinability of the steel was determined by the number of holes drilled by the tool before undergoing severe deformation. The drilling test matrix was prepared using a fractional factorial design with five input variables studied at two levels (25‐1). Other variables investigated include cutting speed (45 and 60 m/min), feed rate (0.15 and 0.25 mm/rev), geometry of the twist drills and use of minimum quantity lubrication (MQL) at the flow rates of 30 and 100 ml/h. Statistical analysis of the results revealed that composition of the work material was most influential on tool performance. Addition of tellurium to the steel significantly improved machinability, increasing the number of drilled holes by over 100 per cent. The MQL flow rate was the least influential as increase in the flow from 30 to 100 ml/h reduced drill life only by about 9 per cent.

Design/methodology/approach

The drilling tests were carried out in the vertical position, up‐down, without pre‐holes (full drilling). Cutting speeds of 45 and 60 m/min and feed rates of 0.15 and 0.25 mm/rev were employed. Drills with two sharpening types were tested. Cutting fluid used was vegetable based and applied using the MQL technique at flow rates of 30 and 100 ml/h. The rejection criterion adopted was severe deformation of the drills and the number of machined holes was used to measure the machinability of the material.

Findings

Of all the variables investigated in this study, the least influential on drill performance is the MQL flow rate. Increase in the flow rate from 30 to 100 ml/h reduced drill performance by 9 per cent, contrary to expectation. This is a result of the cooling‐lubricant action balance promoted by the cutting fluid applied in low quantities (MQL). The most influential variable on drill performance is addition of Te to the work material which gave over twofold (103 per cent) improvement in drill performance at the cutting conditions investigated. The Te particles act at the chip‐tool interface, reducing the work necessary to shear the material during chip formation. Increase in both the cutting speed and the feed rate both lowered drill performance during machining due to associated increase in cutting temperature which tended to accelerate thermally related wear mechanisms.

Originality/value

This work was conducted to evaluate the machinability of a novel alloyed steel employed in the automobile industry. Drilling was considered as most automobile components especially the engine block is designed with many holes which require drilling process.

Details

Industrial Lubrication and Tribology, vol. 63 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 12 January 2015

M. Ronald Buckley, John E. Baur, Jay H. Hardy, III, James F. Johnson, Genevieve Johnson, Alexandra E. MacDougall, Christopher G. Banford, Zhanna Bagdasarov, David R. Peterson and Juandre Peacock

– The purpose of this paper was to identify examples of management lore currently in the organizational sciences.

Abstract

Purpose

The purpose of this paper was to identify examples of management lore currently in the organizational sciences.

Design/methodology/approach

The authors deliberated and developed a series of examples of management lore in the organizational sciences and surveyed management practitioners concerning their beliefs in the lore hypothesized.

Findings

Pervasive beliefs that conflict with academic research exist in management practices. Although many of these ideas are commonly accepted as immutable facts, they may be based upon faulty logic, insufficient understanding of academic research, anecdotal evidence and an overdependence upon common sense. Buckley and Eder (1988) called these as examples of management lore. In this conceptual paper, we identify and discuss 12 examples of management lore that persist in day-to-day management practices. Topics we explore include personality, emotional intelligence, teams, compensation, goals, performance, work ethic, creativity and organizational citizenship behaviors.

Originality/value

A number of areas in which academic research gainsays what we believe to be an immutable fact.

Details

Journal of Management History, vol. 21 no. 1
Type: Research Article
ISSN: 1751-1348

Keywords

Article
Publication date: 17 February 2021

Francisco Elder Escossio de Barros, Ruan Carlos dos Santos, Lidinei Eder Orso and Antonia Márcia Rodrigues Sousa

From the agency theory’s point of view, this paper aims to analyze corporate governance mechanisms about the characteristics of the companies quoted in the segments Bovespa Mais…

1583

Abstract

Purpose

From the agency theory’s point of view, this paper aims to analyze corporate governance mechanisms about the characteristics of the companies quoted in the segments Bovespa Mais and Bovespa Mais 2 and their influence on the creation of value in preparation for the opening of the initial public offering (IPO).

Design/methodology/approach

A quantitative approach was adopted to achieve the proposed objective using the panel data with fixed effects and secondary data collected on the Comissão de Valores Mobiliários website, using statistical software Stata® 13.0 for statistical tests. The population comprises non-financial companies belonging to the Bovespa Mais and Bovespa Mais Level 2 groups, as the survey sample took into account the period of adhesion of the companies, totaled in 15 companies, which cover the period from 2008 to 2019. The selected variables correspond to the ownership structure’s characteristics, then the board’s composition and the fiscal council as the body responsible for supervising the administrators’ acts.

Findings

The main results indicate that the number of independent members on the board of directors and the supervisory board’s participation positively influence market performance. However, it also reveals that the concentration of ownership brings fundraising for other companies’ acquisitions, risk reduction concerning information asymmetry between investing powers.

Research limitations/implications

The main results indicate that the number of independent members on the board of directors and the supervisory board’s participation positively influence market performance. Despite this, it also reveals that the concentration of ownership brings fundraising for other companies’ acquisitions, risk reduction concerning information asymmetry between investing powers.

Practical implications

This paper advances a comparative institutional perspective to explain capital market choice by firms making an IPO in a foreign market. This paper finds that internal governance characteristics (founder-chief executive officer, executive incentives and board independence) and external network characteristics (prestigious underwriters, degree of venture capitalist syndication and board interlocks) are significant predictors of foreign capital market choice by foreign IPO firms.

Social implications

While product market choices have been central to strategy formulation for firms in the past, financial markets’ integration makes capital markets an equally crucial strategic decision. This paper advances a comparative institutional perspective to explain capital market choice by firms making an IPO in a foreign market.

Originality/value

This situation generates value to shareholders and is perceived by the market and, ultimately, generates a direct relationship with the market performance of companies. While product market choices have been central to strategy formulation for firms in the past, financial markets’ integration makes capital markets an equally major strategic decision.

Details

Corporate Governance: The International Journal of Business in Society, vol. 21 no. 5
Type: Research Article
ISSN: 1472-0701

Keywords

Article
Publication date: 18 July 2019

Eder Martinez, Carolina K. Reid and Iris D. Tommelein

The purpose of this paper is to explore opportunities and barriers to using lean construction to address issues related to the value, quality and scalability of affordable housing…

Abstract

Purpose

The purpose of this paper is to explore opportunities and barriers to using lean construction to address issues related to the value, quality and scalability of affordable housing production in Latin America.

Design/methodology/approach

This paper presents a case study of a housing developer in Ecuador that used lean construction in the design and construction stages of an affordable housing project. The study describes how the developer addressed operational challenges derived from implementing a customization strategy and analyzes qualitative and quantitative data to assess the outcomes of lean initiatives.

Findings

The developer reduced cost and delivery time without sacrificing consumer choice. However, the economic and policy conditions worked against the benefits of lean construction, demonstrating the importance of the regulatory context in facilitating or inhibiting lean initiatives and construction innovation.

Research limitations/implications

This paper focuses on conventional means for new housing construction. Self-help and upgrading are not covered.

Practical implications

The operational challenges described in this study, as well as the innovative ways to deal with them, are beneficial for practitioners seeking to improve the quality and efficiency of affordable housing construction.

Social implications

This paper advances knowledge about how to increase value and quality delivery in the built environment which may benefit low-income families.

Originality/value

This study bridges construction innovation and housing policy, discussing the potential of lean construction within the policy and regulatory environment in which affordable housing takes place.

Details

Construction Innovation , vol. 19 no. 4
Type: Research Article
ISSN: 1471-4175

Keywords

Book part
Publication date: 7 July 2015

Magdalena Markowska, Charmine E. J. Härtel, Ethel Brundin and Amanda Roan

Despite recognition of the centrality of emotions in entrepreneurship, little attention has been given to role of emotions in the development of entrepreneurial identity or…

Abstract

Despite recognition of the centrality of emotions in entrepreneurship, little attention has been given to role of emotions in the development of entrepreneurial identity or enactment of entrepreneurial role. The contribution of the chapter is in the development of a dynamic model of the process leading to identification or dis-identification as an entrepreneur. In this chapter, we develop a dynamic model of the process leading to identification or dis-identification as an entrepreneur. We theorize that the driver behind an individual’s decision to become an entrepreneur, and their significant emotional experiences in the entrepreneurial role, influence the likelihood of following an identification or dis-identification cycle. Specifically, our framework proposes that positive emotions strengthen approach motivation and identification with the role, while negative ones foster avoidance motivation and dis-identification. We argue that contextual embeddedness can prompt transition between these two cycles. Our theorization provides new insights into methods of analyzing the role of emotions in the entrepreneurial process, more specifically in the process of entrepreneurial identity crafting. These insights also can be translated into studying the crafting of any professional identity.

Details

New Ways of Studying Emotions in Organizations
Type: Book
ISBN: 978-1-78560-220-7

Keywords

Article
Publication date: 1 March 2013

Paige Vitulli and Susan Pitts Santoli

Drawing from research on art integration, we discuss why visual arts and social studies can be powerful partners in promoting critical thinking skills. Because this is an…

1566

Abstract

Drawing from research on art integration, we discuss why visual arts and social studies can be powerful partners in promoting critical thinking skills. Because this is an increasingly visual society, visual literacy is becoming progressively more important. Through the visual arts, students have the opportunity to analyze and evaluate information, which are critical academic and citizenship skills. The integration of these two content areas and skills facilitates effective use of the limited time teachers have with students. In order to demonstrate the integration of art and social studies, we provide a lesson plan on Western Expansion.

Details

Social Studies Research and Practice, vol. 8 no. 1
Type: Research Article
ISSN: 1933-5415

Keywords

Book part
Publication date: 13 August 2018

Robert L. Dipboye

Abstract

Details

The Emerald Review of Industrial and Organizational Psychology
Type: Book
ISBN: 978-1-78743-786-9

Book part
Publication date: 25 October 2021

Andrea Bramberger and Kate Winter

This chapter describes why safe spaces are needed in education settings for full inclusion of gendered identities as they intersect with categories such as race/ethnicity, class…

Abstract

This chapter describes why safe spaces are needed in education settings for full inclusion of gendered identities as they intersect with categories such as race/ethnicity, class, sexual orientation, and ability. This discussion briefly addresses varying and intersecting levels and domains of privilege or marginalization such as identity, inter-/intraaction, organization, society, and knowledge, and how safe spaces in education can support learning as it is entwined with gender, gendered biases, and power dynamics and structures.

Article
Publication date: 25 November 2021

Fábio Henrique de Souza, Luiz Octávio Gavião, Annibal Parracho Sant'Anna and Gilson B.A. Lima

This study aims to develop a risk prioritization process using failure mode and effect analysis (FMEA) in association with composition of probabilistic preferences (CPP) and…

Abstract

Purpose

This study aims to develop a risk prioritization process using failure mode and effect analysis (FMEA) in association with composition of probabilistic preferences (CPP) and weighting the risk analysis criteria. It seeks to develop decision-making considering the fast response necessary to achieve project objectives in complex scenarios, such as the pandemic of COrona VIrus Disease 19 (COVID-19).

Design/methodology/approach

After identifying the risks, the prioritization process was applied to a project in the oil and gas area, in which a focus group assessed these risks. This evaluation took place employing traditional FMEA, FMEA with CPP by axes considering four points of view and FMEA with CPP by weighted sum with the use of a multicriteria method to weight the criteria. These approaches were compared to understand their differences and benefits, with a flow chart being developed, consolidating the procedure.

Findings

The methodologies that showed the greatest benefits were FMEA with CPP by axes PO (progressive-optimistic) and by weighted sum. Essentially, this was mainly related to the interrelationship between risks and to the importance of prioritization.

Originality/value

This procedure can consider company's views on what is critical and the interrelationship between risks. It provides a clear segmentation of what should and should not be prioritized. It was also developed in a practical case, showing a possible alternative to support fast responses in decision-making.

Details

International Journal of Managing Projects in Business, vol. 15 no. 4
Type: Research Article
ISSN: 1753-8378

Keywords

Article
Publication date: 22 May 2020

Cláudia Matias and Mário Franco

The main objective of this study is to understand the role that family council and protocol can have in the planning process of family companies.

Abstract

Purpose

The main objective of this study is to understand the role that family council and protocol can have in the planning process of family companies.

Design/methodology/approach

To reach this general objective, the qualitative approach was used using multiple case studies: seven Portuguese family companies. Data collection techniques, interviewing, direct observation and documentary analysis were used.

Findings

Based on the empirical evidence, it is concluded that the family council and family protocol help succession planning and favour the continuity and survival of the family business. However, other working groups also support the entire planning process, such as the cousin generation meeting and the New Generation Monitoring Committee (or Mentoring Committee). The development of future personal plans for the younger generations may lie in this Committee, which assists and guides the younger family members.

Practical implications

This study is pioneering in Portugal because it analyses the use of new instruments that helps the succession planning process in family firm context: the family council and family protocol. These managerial mechanisms allow to achieve the success, allowing family conflicts to be minimized, the continuity of family firms and avoiding their mortality.

Originality/value

The study contributes to increasing knowledge about the family council, the family protocol, family firm succession and its planning. It is important and innovative by studying those topics in depth, their connection being little explored in the literature. This study can be seen as a benchmarking for governance practices in other countries.

Details

Journal of Family Business Management, vol. 11 no. 4
Type: Research Article
ISSN: 2043-6238

Keywords

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