Daniele Piazzullo, Michela Costa, Luigi Allocca, Alessandro Montanaro and Vittorio Rocco
This paper aims to study the heat transfer phenomenon occurring between heated walls and impinging fuel, showing the strict relationship between cooling effect after impingement…
Abstract
Purpose
This paper aims to study the heat transfer phenomenon occurring between heated walls and impinging fuel, showing the strict relationship between cooling effect after impingement and enhancing of wallfilm formation. The study focuses on a fundamental task in terms of pollutant emissions in internal combustion engines, aiming at giving a major contribution to the optimization of energy conversion systems in terms of environmental impact.
Design/methodology/approach
The paper is based on experimental campaigns relevant at taking measurements of an impinging spray over a heated wall in a confined vessel. The results, in both qualitative and quantitative terms (measurements of liquid and vapour radial penetration and thickness), are numerically reproduced by a computational model based on a Reynolds Averaged Navier Stokes approach, properly validated through customized sub-models.
Findings
The paper provides quantitative results about the agreement between radial penetration and vapour thickness between measurements and simulation, achieved by taking into account the cooling effect determined by the fuel impingement. This validation of the numerical model allows the author to give more considerations about the link between wall temperature and wallfilm formation.
Originality/value
This paper presents an original approach for the simulation of wall heat transfer, by imposing a boundary condition at the wall that may consider the heat conduction and temperature cooling given by fuel impingement in both lateral and normal directions. The classical Dirichlet boundary condition, characterized by imposing a fixed temperature value, is, instead, replaced by an approach based on calculating the unsteady process that couples the heat fluxes between the fluid and the solid material and within the solid itself.
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Michela Costa, Vanessa Indrizzi, Nicola Massarotti and Alessandro Mauro
The purpose of this paper is to optimize the performance of an incinerator plant in terms of NO emissions and temperature of particles 2 s after the last air injection, which must…
Abstract
Purpose
The purpose of this paper is to optimize the performance of an incinerator plant in terms of NO emissions and temperature of particles 2 s after the last air injection, which must be above 850°C as established from the Directive 2000/76/EC of the European Parliament and of the Council – December 4, 2000 on dioxins formation in waste incineration plants.
Design/methodology/approach
Investigation is made by coupling proper models developed within three commercial software environments: FLUENT, to reproduce the thermodynamic field inside the combustion chamber of the incinerator plant taken into account, MATLAB, to evaluate the position and temperatures of the particles 2 s after the last air injection, MODEFRONTIER, to change both the secondary air mass flow rate and the equivalent heat transfer coefficient of the refractory walls to fulfill the conflicting objectives of reducing the NO formation and increasing the mean gases temperature as required by the Directive.
Findings
The investigations suggest that it is possible to create the conditions allowing the reduction of NO emissions and the fulfilment of the European limits. In particular, the obtained results suggest that increasing the overall mass flow rate of the secondary air and using a different refractory material on the walls, the environmental performance of the incinerator plant can be improved.
Research limitations/implications
Many other parameters could be optimized and, at the same time, more detailed models could be used for the Computational Fluid Dynamics simulations. Moreover, also the energy generated at the plant would need a better investigation in order to understand if optimal conditions can be really achieved.
Originality/value
The work covers new aspects of Waste-to-Energy (WtE) systems, since it deals with an optimization study of plant design and operating parameters. This kind of investigation allows not only to improve already existing technologies for WtE systems, but also to develop new ones.
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Michela Floris, Michela Marongiu, Cinzia Dessi and Angela Dettori
This study investigates the relationship between Total Quality Management (TQM) and internationalization in small family firms, focusing on the role that the dimensions of TQM may…
Abstract
Purpose
This study investigates the relationship between Total Quality Management (TQM) and internationalization in small family firms, focusing on the role that the dimensions of TQM may have as strategic resources to implement successful internationalization strategies.
Design/methodology/approach
Building on the Resource-Based View (RBV), the study is based on a single case study, and data were gathered through in-depth interviews with the family owner-manager.
Findings
Findings show that small family businesses that aim to operate in international markets have to invest constant attention toward TQM by developing strategies able to achieve excellence. More in detail, for small and medium family firms, TQM represents a driver to internationalize. Therefore, family-owned managers sustain that internationalization success depends on the increasing attention exhibited toward the following dimensions of quality, specifically on three main pillars: relationships, professionalization and long-term vision, which appear to be strategic resources in international markets. An interpretive model is proposed with a set of propositions.
Research limitations/implications
Scholarly implications are threefold. First, findings contribute to the RBV theory by introducing the long-term vision as a strategic resource able to activate a loop between TQM and internationalization success. Second, results contribute to TQM literature, highlighting that it represents a driver to internationalize, and following a long-term perspective, its enhancement is stimulated by internationalization. Third, findings contribute to family business studies, underlining the relevance done of owners on professionalization as a strategic resource to ensure excellence and obtain success in overseas markets. The main drawback refers to the fact that results stemmed from one single case study. Further studies could deepen the analysis on multiple cases.
Practical implications
The proposed case study represents a best practice and can stimulate other entrepreneurs and consultants to invest in TQM to thrive internationalization strategies.
Originality/value
The current study, elucidating that TQM is the driver to stimulate family business internationalization, proposes an interpretive model to study TQM and internationalization in small and medium family firms.
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This comparative book review is concerned with two recent studies of essential workers in Germany: Jana Costas’ Dramas of Dignity and Peter Birke’s Grenzen aus Glas [literally…
Abstract
This comparative book review is concerned with two recent studies of essential workers in Germany: Jana Costas’ Dramas of Dignity and Peter Birke’s Grenzen aus Glas [literally ‘borders made from glass’]. While Costas is interested in studying how individual cleaners preserve their sense of dignity despite their widely believed stigmatizing work roles, Birke is interested in the power resources migrant workers can potentially mobilize for improving their working conditions despite the multi-dimensional (inter-sectional) precarity they confront in their life situation. In the context of German industrial and organizational sociology, both studies represent comparatively rare exemplars of detailed qualitative and ethnographic work that illuminate the labour process from taking a workers’ perspective. Using different approaches to fieldwork, both studies reveal the precarious nature of being an essential worker in areas such as meat packing, warehouse work, and cleaning. This general observation gives rise to some concluding speculations about the emancipatory potential of ethnographic research, in labour studies and beyond.
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Sara Maryami, Michela Loi, Marcello Martinez and Maria Chiara Di Guardo
Drawing on the Broaden-and-build theory, the study investigates the impact of team entrepreneurial passion (TEP) on team performance. This study further examines the mediating…
Abstract
Purpose
Drawing on the Broaden-and-build theory, the study investigates the impact of team entrepreneurial passion (TEP) on team performance. This study further examines the mediating role of team cooperation between TEP and team performance. Thus, by expanding the conceptual model of TEP, the authors examine how three domains of TEP, namely inventing, founding and developing affect the entrepreneurial outcomes in the early stages of entrepreneurship.
Design/methodology/approach
Survey data were collected from 29 entrepreneurial teams, and the proposed relationships were assessed through Smart-PLS 3.2.8 structural equation modeling (SEM) tool.
Findings
Regarding the domains of TEP, the authors' findings show that the TEP for inventing is positively related to team performance. As for the influences of TEP for inventing and TEP for developing, both are the most beneficial for entrepreneurial outputs, such as team members' abilities to recognize and exploit opportunities.
Originality/value
Although there is an increased scholars' interest in entrepreneurial passion, there is a lack of research that examines the enabling factors and outcomes of entrepreneurial passion at the team level. This study is among the earliest research studies that not only empirically explores the relationships between TEP and team performance but also illustrates how each domain of TEP uniquely influences entrepreneurial outcomes by extending existing studies on entrepreneurial passion.
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Federica Doni, Silvio Bianchi Martini, Antonio Corvino and Michela Mazzoni
The recent European Union Directive 95/2014 enforced a radical shift from voluntary to mandatory disclosure of non-financial information. Given radical changes in reporting…
Abstract
Purpose
The recent European Union Directive 95/2014 enforced a radical shift from voluntary to mandatory disclosure of non-financial information. Given radical changes in reporting practices, there is an urgent need to assess the firms’ attitude to disclose non-financial information regarding the new requirement. This paper aims to investigate whether the quantity and quality of non-financial information, voluntarily disclosed in the years before the directive came into force, were linked to the level of compliance.
Design/methodology/approach
Selecting a sample of 60 Italian companies from the obliged entities, the authors carried out a manual content analysis on corporate reports and developed some research hypotheses to explore if their sustainability practices can affect non-financial disclosures required by the Italian adoption of the European directive (i.e. Legislative Decree 254/2016).
Findings
Evidence showed that prior skills and competencies in non-financial reporting made a significant contribution especially regarding to the presence of business model, but further efforts are expected to improve the quality of non-financial reports.
Practical implications
This study yields an initial assessment of the implementation of the European directive in Italy. It may, therefore, help policymakers to identify ways to improve the harmonization of reporting practices. Preparers can also be supported in choosing different positioning of reporting on non-financial information.
Originality/value
This research provides interesting insights into the ex ante and ex post adoption of the European directive by investigating how Italian companies are reacting to regulatory and institutional requirements. One of the main problems remains the lack of a shared understanding of the term “non-financial”, which can make the communication process difficult and unclear.
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Mercedes Luque-Vílchez, Michela Cordazzo, Gunnar Rimmel and Carol A. Tilt
This paper aims to investigate the current state of knowledge in key reporting aspects in relation to sustainability reporting in general and to reflect on their relevance to…
Abstract
Purpose
This paper aims to investigate the current state of knowledge in key reporting aspects in relation to sustainability reporting in general and to reflect on their relevance to Global Reporting Initiative (GRI) in particular. In doing so, the major gaps in that knowledge are identified, and the paper proceeds to suggest further research avenues.
Design/methodology/approach
The authors conduct a review of papers published in leading journals concerning sustainability reporting to analyse the progress in the literature regarding three important reporting topics: materiality, comparability and assurance.
Findings
The review conducted in this study shows that there is still work to be done to ensure high-quality and consistent sustainability reporting. Key takeaways from the review of the extant literature are as follows: there is ongoing debate about the nature of sustainability reporting materiality, and single versus double materiality. Clearer guidance and better contextualisation are seen as essential for comparability, and, as GRI suggests, there is an important link to materiality that needs to be considered. Finally, assurance has not been mandatory under the GRI, but the current development at EU level might lead to the GRI principles being incorporated in the primary assurance standards.
Practical implications
In this paper, the authors review and synthesise the previous literature on GRI reporting dealing with three key reporting aspects.
Social implications
The authors extract some takeaways from the literature on materiality, comparability and assurance that will all be key challenges for GRI in the future.
Originality/value
This paper provides an updated review of the literature on GRI reporting dealing with three key reporting aspects.
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The attention of scholars and policy makers towards the topic of innovation has consistently increased, especially in recent years. This is justified by the fact that innovation…
Abstract
The attention of scholars and policy makers towards the topic of innovation has consistently increased, especially in recent years. This is justified by the fact that innovation undoubtedly plays, today, a crucial role in driving a country’s economic growth, improving productivity and, more generally, enhancing overall societal well-being.
When the discourse around innovation focuses on its economic dimension, the strong intertwinement with entrepreneurship emerges. In line with this, focusing on research on innovation in organisations and, especially, innovation in relation to the figure of the entrepreneur is considered, plenty of studies have been carried on, over time, in many disciplines, analysing the role of the entrepreneur in relation to innovation from various different angles. However, especially when management studies are considered, we can notice a poor consideration of the role played by the gender of the entrepreneur. In line with this consideration, by means of a systematic literature review, this chapter aims to fill this literature gap focusing on the intertwinement that can be envisaged, in management studies, among the issues of entrepreneurship and innovation in the case of women-owned firms.
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Using insights from attributions, planned behavior, and fairness theories, this study examines the effect of blame attributions of psychological contract breach on employees’…
Abstract
Purpose
Using insights from attributions, planned behavior, and fairness theories, this study examines the effect of blame attributions of psychological contract breach on employees’ attitudes (affective organizational commitment) and behaviors (organizational citizenship behavior (OCB)). The purpose of this paper is to understand whether employees’ reactions depend on the attributions they make concerning who is responsible for the breach.
Design/methodology/approach
Cross-lagged design in which data were collected from 220 employees and their supervisors in a public company at two times. Moderated mediation was tested using the bootstrapping analysis outlined by Hayes (2012).
Findings
The results supported the authors’ predictions: employees’ blame attributions to the organization have a negative impact on OCBs (as rated by supervisors in time 2) through decreased affective organizational commitment, but blame attributions to the economic context act as a buffer to the relationship between blame attributions to organization and affective organizational commitment, with consequences for OCBs.
Research limitations/implications
Attributions can also be made to concrete persons (i.e. supervisor, coworker, self) rather than to just the organization or context.
Practical implications
When hiring, recruiters should provide accurate and realistic promises to the candidates. When facing hard times, managers should provide additional information to employees and adjust their expectations to the current situation of the firm.
Originality/value
This study makes a unique contribution to the literature by questioning the “single story” perspective about reactions to psychological contract breach, in which it is assumed that employees always respond negatively to such event.
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The current era is characterized by hyperturbulence, population growth, attention to food security, the need to identify sustainable strategies to reduce pollution and poverty…
Abstract
The current era is characterized by hyperturbulence, population growth, attention to food security, the need to identify sustainable strategies to reduce pollution and poverty, and the disparity between developed and undeveloped economies. These circumstances force a global paradigm shift based on sustainable practices and processes that put people and the environment at the core of each activity, contributing to sustainable, social, and economic development and promoting well-being in the community.
In this spirit, a strong impulse can derive from the practices of Green Technology, considered here as that set of processes aimed at eco-sustainability that acquire undisputed relevance, especially for emerging economies.
This chapter focuses on the role that Green technology practices exert in generating local well-being in the world's fifth-largest country: Brazil. Dynamic growth and effective social policies lifted millions of people out of poverty in the 2000s, even if socio-economic development varies widely across the country. Brazil is a leading global agricultural, minerals, and oil producer. The natural environment represents the primary source of Brazil's development that deserves to be protected and push firms and citizens to find new sustainable solutions based on green policies. Drawing inspiration from a Brazilian case study, this chapter proposes a set of building blocks that foster sustainable business practices in emerging countries.
The chapter is organized as follows: the first part introduces the concept of green technology practices; the second highlights the opportunities of green technologies; the third focuses on a single case study.