Rodrigo Martins, Francisco Fernandes, Virginia Infante and Antonio R. Andrade
The purpose of this paper is to describe an integer linear programming model to schedule the maintenance crew and the maintenance tasks in a bus operating company.
Abstract
Purpose
The purpose of this paper is to describe an integer linear programming model to schedule the maintenance crew and the maintenance tasks in a bus operating company.
Design/methodology/approach
The proposed methodology relies on an integer linear programming model that finds feasible maintenance schedules. It minimizes the costs associated with maintenance crew and the costs associated with unavailability. The model is applied in a real-world case study of a Portuguese bus operating company. A constructive heuristic approach is put forward, based on solving the maintenance scheduling problem for each bus separately.
Findings
The heuristic finds better solutions than the exact methods (based on branch-and-bound techniques) in a much lower computational time.
Practical implications
The results suggest the relevance of such heuristic approaches for maintenance scheduling in practice.
Originality/value
This proposed model is an effective decision-making support method that provides feasible maintenance schedules for the maintenance technicians and for the maintenance tasks in a fleet of buses. It also complies with several operational, technical and labour constraints.
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F.F. Duarte, Virgínia Isabel V. Infante, P.M.G. Moreira, M. de Freitas and P.M.S.T. de Castro
Friction stir welding lap joints of aluminum alloy AA6082-T6 were joined using two distinct configurations. The purpose of this paper is to study the effect of the welding line…
Abstract
Purpose
Friction stir welding lap joints of aluminum alloy AA6082-T6 were joined using two distinct configurations. The purpose of this paper is to study the effect of the welding line direction on the fatigue life of the specimens. For that purpose, specimens with the welding line parallel to the loading direction and with the welding line perpendicular to the loading direction were designed and manufactured. Fatigue tests were performed under constant amplitude load and stress ratio of R=0.1. As shown in previous studies, the hook defect plays a decisive role in the mechanical behavior of the joint, in particular when submitted to fatigue. The specimen geometry with the welding line parallel to the loading direction showed a superior fatigue behavior: for a given number of cycles to rupture, the level of stress is approximately twice as high as for the perpendicular configuration.
Design/methodology/approach
Two finite element models were created in order to study the behavior of the welded zone and, in particular, to compare influence of the hook defect in both configurations.
Findings
The specimen geometry with the welding line parallel to the loading direction showed a superior fatigue behavior: for a given number of cycles to rupture, the level of stress is approximately twice as high as for the perpendicular configuration.
Originality/value
The main objective of this work is to study the effect of the welding line direction on the fatigue life of the specimens. For that purpose, specimens with the welding line parallel to the loading direction and with the welding line perpendicular to the loading direction were designed and manufactured. Fatigue tests were performed under constant amplitude load and stress ratio of R=0.1. As shown in previous studies, the hook defect plays a decisive role in the mechanical behavior of the joint, in particular when submitted to fatigue.
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Cen April Yue, Yufan Sunny Qin and Linjuan Rita Men
This study is designed to bridge a gap in the existing leadership communication literature by delving into lesser-explored facets of the field. It particularly concentrates on…
Abstract
Purpose
This study is designed to bridge a gap in the existing leadership communication literature by delving into lesser-explored facets of the field. It particularly concentrates on investigating how the verbal aggressiveness of supervisors influences various aspects of the workplace, including workplace emotional culture, the quality of employee–organization relationships (EORs) and the prevalence of counterproductive work behaviors (CWB).
Design/methodology/approach
This study employed a quantitative research design to investigate the impact of supervisors' verbal aggressiveness on employee and organizational outcomes. The data were collected from 392 full-time employees across various organizations and industries in the USA using a self-report questionnaire. The researchers used structural equation modeling (SEM) to analyze the data and test hypotheses.
Findings
The findings of this study showed that supervisors' verbal aggressiveness had a significant positive association with negative emotional culture and employee CWB. However, it had no direct impact on employee–organization relationships. The effect of supervisor verbal aggressiveness on employee CWB was found to be mediated by a negative team-level emotional culture.
Originality/value
This study advances the literature on leadership communication by highlighting the detrimental influence of the dark side of leadership communication. More specifically, by identifying negative emotional culture and employee CWB as the direct outcomes of supervisor verbal aggressiveness, the authors add to the existing theoretical knowledge on verbal aggressiveness in the workplace. Additionally, this study provides empirical evidence of the impact of a negative emotional culture on eliciting employees' CWBs and diminishing relationship quality, adding to the body of knowledge on why managing emotional culture is crucial for organizations and workgroups.
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Steve Winer, Leslie Ramos Salazar, Amy M. Anderson and Mike Busch
The purpose of this study is to extend Bippus and Young’s (2005) study and examine the effectiveness of the “I-you,” “I,” “You,” “We,” “But” and Question-based “Why” statements…
Abstract
Purpose
The purpose of this study is to extend Bippus and Young’s (2005) study and examine the effectiveness of the “I-you,” “I,” “You,” “We,” “But” and Question-based “Why” statements from Winer’s (2021) verbal coding program of conflict management using Bandura’s (1977) social learning theory (SLT).
Design/methodology/approach
Mixed methods were used using 175 university students from Texas and New York. A cross-sectional convenience sampling approach was conducted. Survey data was collected using Qualtrics.
Findings
Descriptive results demonstrated that the “We” statement was the most passive, the “I-you” statement was the most assertive and the “But,” “I,” “You” and Question statements were perceived to be aggressive. In addition, assertive “I-You” statements were perceived to be more effective in resolving the conflict and maintaining a relationship, whereas aggressive statements were less likely to resolve the conflict and maintain the relationship. Qualitative themes also support the “I-You” statement as the most assertive, while the “But,” “You” and “I” statements were found to be the most aggressive statements.
Practical implications
Implications and applications are discussed to stimulate future research among researchers and practitioners when addressing conflict. Being aware of the verbal statements that de-escalate conflict may be helpful in solving conflict in interpersonal, family and professional relationships. Future trainings can adopt effective verbal statements to resolve conflict when experiencing anger issues. Future research can continue to investigate verbal communication statements using SLT to help practitioners and managers address conflict in interpersonal relationships.
Originality/value
This study examines verbal statements in relation to communication styles and conflict management.
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“A knowledge of different literatures is the best way to free one's self from the tyranny of any of them.” Jose Marti, Cuban writer, poet and statesman.
Elena Navarro-Astor, Marisa Román-Onsalo and Margarita Infante-Perea
Through a systematic literature review covering 15 years, this paper aims to identify and annotate the barriers that hinder the career development of women working in the…
Abstract
Purpose
Through a systematic literature review covering 15 years, this paper aims to identify and annotate the barriers that hinder the career development of women working in the construction industry. Furthermore, it describes publication trends that have contributed to the evolution of the topic.
Design/methodology/approach
A systematic literature review of credible sources in different databases has been carried out for the period from 2000 to 2015. By means of thematic analysis, a data set of 60 articles has been analysed.
Findings
The topic has been and still is of interest to the research community. Women who work in the construction industry in different countries confront numerous career barriers, the more frequent being the difficulty of balancing work and family, and the lack of professionalism in human resource management.
Research limitations/implications
Some publications related to the topic might have been inadvertently omitted. Hopefully, this paper can be valuable for informing future research directions.
Practical implications
The paper is useful to human resource managers to understand how their practices influence women’s career development, gender equity and organisational injustice, and how to improve them. It informs policies to reduce gender discrimination and guides researchers interested in gender diversity in the industry.
Social implications
A clear vision of career barriers affecting women is required to find solutions and improve the fairness and justice of business practices.
Originality/value
Previous studies do not offer a comprehensive and up-to-date review covering such a wide time period and so many countries. It will have implications in the identification of initiatives critical to achieving lasting change in gender equity in the construction industry.
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William A. Donohue and Daniel Druckman
The purpose of this study was to determine the relative impact of positive and negative face threats in conflict scenarios on the relational quality between disputants. This study…
Abstract
Purpose
The purpose of this study was to determine the relative impact of positive and negative face threats in conflict scenarios on the relational quality between disputants. This study also sought to determine whether the contextual variables of relational distance and power differential mediated this relationship as predicted by politeness theory.
Design/methodology/approach
To test the hypotheses, a 2 × 2 × 2 design was implemented manipulating the variables face (positive and negative), relational distance (business and personal) and power differential (high and low power differential). Participants read one of the eight scenarios, then responded to the dependent variables which focused on the impact of the face threats on relational quality between the participants. Subjects were recruited using the M-Turk, Amazon platform. Manipulation checks were carefully constructed to ensure subjects understood them.
Findings
The results of this study indicated that positive face threats have significantly more impact on relational quality between disputants than negative face threats. Moreover, context did not mediate these results. Neither relational distance nor power differential impacted the extent to which positive face threats compromised the relationship between the disputants.
Research limitations/implications
This is the first study to explore the impact of face threats on relational outcomes in conflict. Prior studies focused only on the extent to which contextual variables would impact the choice of face threats that disputants might make in response to power and relational distance differences. This result suggests that face threats play a significant role in determining relational outcomes in conflict settings.
Practical implications
This study suggests that practitioners, such as mediators or group facilitators, should take steps to limit the kinds of positive face threats that disputants exchange during conflict. If positive face threats are allowed to escalate, then they can severely compromise the willingness of disputants to trust and continue to work toward an integrative solution.
Social implications
Political divisions often appear to widen in the context of positive face threats as individuals seek to belittle the identities of their opponents. As these face threats escalate, they can result in polarizing language that disempowers these individuals from wanting to work together in a trusting relationship to accomplish important social goals.
Originality/value
This is the first study to explore the relative impact of positive and negative face threats on the relational quality of disputants in conflict. It is also the first to explore the extent to which context mediates the impact of face threats.
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Casey Floyd and Gregory B. Fairchild
This case is used in Darden's required first-year course, “Strategic Thinking and Action.”In 2015, Steve and Heidi Crandall, the founders of Devils Backbone Brewing, LLC (DBB)…
Abstract
This case is used in Darden's required first-year course, “Strategic Thinking and Action.”
In 2015, Steve and Heidi Crandall, the founders of Devils Backbone Brewing, LLC (DBB), were looking back on eight years of unanticipated success and significant growth. DBB had created a destination, a brand, and beer that drew people from all over, and it was the largest craft brewery in its region. The entire community, not just loyal beer drinkers, had supported DBB. In addition to funding and zoning accommodations, so many local residents had built their own economic lives around what had been their “little brewery that could.”
But the success had brought challenges, specifically in terms of growth. DBB was consistently not meeting demand in its existing markets and was receiving complaints about out-of-stocks. The Crandalls and their team had to figure out how to grow with, or preferably ahead of, demand for DBB's product. Should DBB build further capacity despite an already exhausted line of credit? Should it employ a contract brewer despite the local authenticity concerns such a move might stir up? Or should it just keep trying to manage business within its existing footprint, comfortably serving its loyal customer base?
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Eduardo Peis, Félix de Moya and J. Carlos Fernández‐Molina
The eventual adaptation of archives to new technological possibilities could begin with the creation of digital versions of archival finding aids, which would allow the…
Abstract
The eventual adaptation of archives to new technological possibilities could begin with the creation of digital versions of archival finding aids, which would allow the international diffusion of descriptive information. The Standard Generalized Markup Language (SGML), document type definition (DTD) for archival description known as encoded archival description (EAD) is an appropriate tool for this purpose. Presents a methodological strategy that begins with an analysis of EAD and the informational object to be marked up, allowing the semiautomatic creation of a digital version.