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Book part
Publication date: 20 March 2001

Abstract

Details

Edwin Seligman's Lectures on Public Finance, 1927/1928
Type: Book
ISBN: 978-1-84950-073-9

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Article
Publication date: 31 December 2020

Stephanie Anne Shelton and Shelly Melchior

This paper aims to examine how two White teachers, experienced and award-winning veteran educators, navigated issues of race, class and privilege in their instruction, and…

Abstract

Purpose

This paper aims to examine how two White teachers, experienced and award-winning veteran educators, navigated issues of race, class and privilege in their instruction, and ways that their efforts and shortcomings shaped both teacher agency and classroom spaces.

Design/methodology/approach

This study’s methodology centers participants’ experiences and understandings over the course of two years of interviews, classroom observations and discussion groups. The study is conceptually informed by Sara Ahmed’s argument that social justice is often approached as something that education “can do,” which is problematic because it assumes that successful enactment is “intrinsic to the term.” Discussing and/or intending social justice replaces real change, and those leading the conversations believe that they have made meaningful differences. Instead, true shifts in thinking and action are “dependent on forms of institutional commitment […and] how it [diversity/social justice] gets taken up” (p. 241).

Findings

Using an in vivo coding approach – i.e. using direct quotations of participants’ words to name the new codes – the authors organized their findings into two discussions: “Damn – Every Time I’m with the Kids, I Just End Up Feeling Frozen”; and “Maybe I’m Just Not Giving These Kids a Fair Shake – Maybe I’m the Problem”.

Originality/value

The participants centered a participatory examination of intersectionality, rather than the previous teacher-mandated one. They “put into action” -xplorations of intersectionality that were predicated on students’ identities and experiences, thus making intersectionality a lived concept, rather than an intellectual one, and transforming students’ and their own engagement.

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English Teaching: Practice & Critique, vol. 20 no. 1
Type: Research Article
ISSN: 1175-8708

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Article
Publication date: 25 September 2019

Giulio Palomba and Luca Riccetti

This paper aims to perform an analytical analysis on portfolio allocation when a tracking error volatility (TEV) constraint holds, drawing specific attention to the…

Abstract

Purpose

This paper aims to perform an analytical analysis on portfolio allocation when a tracking error volatility (TEV) constraint holds, drawing specific attention to the portfolio efficiency issue. Indeed, it is well known that investors can assign part of their funds to asset managers who are given the task of beating a benchmark portfolio. However, the risk management office often imposes a TEV constraint to the asset managers’ activity to maintain the portfolio risk near to the risk of the benchmark. This situation could lead asset managers to select non efficient portfolios in the total return and absolute risk perspective. However, the risk management office can impose further constraints, such as on maximum variance or maximum value at risk (VaR) to maintain the overall portfolio risk under control.

Design/methodology/approach

First the authors define the TEV constrained-efficient frontier (ECTF), a set of TEV constrained portfolios that are mean–variance efficient. Second, they define two new portfolio frontiers analyzing how the imposition of a maximum variance or maximum VaR restriction can reduce the ECTF. Third, they investigate the feasibility of such portfolio frontiers and their relationships.

Findings

The authors find that variance or VaR constraint can force asset managers to pursue portfolio efficiency.

Originality/value

This is a practically important issue given that asset managers often receive a constraint on TEV from the risk management office, but the risk management office does not ask them to minimize the TEV as often assumed in the optimizations performed in the literature on this topic.

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Article
Publication date: 3 May 2011

Giuseppe Quaglia, Luca Bruzzone, Giorgio Bozzini, Riccardo Oderio and Roberto P. Razzoli

The purpose of this paper is to describe the development of a robot for surveillance able to move in structured and unstructured environments and able to overcome…

Abstract

Purpose

The purpose of this paper is to describe the development of a robot for surveillance able to move in structured and unstructured environments and able to overcome obstacles with high energetic efficiency.

Design/methodology/approach

The proposed Epi.q‐TG hybrid robot combines wheeled and legged locomotion. It is equipped with four three‐wheeled locomotion units; traction is generated by the two forecarriage units, while the two rear ones have same geometry but are idle. Each front unit is actuated by a single motor with the interposition of an epicyclical gearing, accurately designed in order to suitably switch between wheeled and legged motion. The robot changes locomotion mode from rolling on wheels (advancing mode) to stepping on legs (automatic climbing mode) according to local friction and dynamic conditions.

Findings

The experimental results confirm the design objectives. In advancing mode, the robot behaves like a four‐wheeled vehicle, with high speed and energetic efficiency. In automatic climbing mode, the robot can walk on uneven and soft terrains and overcome steps with remarkable height with respect to its dimensions (up to 84 per cent of the locomotion unit height).

Practical implications

Besides surveillance, Epi.q‐TG can be successfully used in many tasks in which it is useful to combine the advantages of wheeled and legged locomotion, e.g. unmanned inspection of nuclear and chemical sites, minesweeping, and intervention in disaster zones.

Originality/value

The core of the project is the epicyclical mechanism of the locomotion unit, which switches between advancing mode and automatic climbing mode without control action. This solution limits the control and actuation complexity and consequently the robot cost, widening the range of possible applications.

Details

Industrial Robot: An International Journal, vol. 38 no. 3
Type: Research Article
ISSN: 0143-991X

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Article
Publication date: 14 January 2014

Luca Bruzzone and Pietro Fanghella

The aim of the research is the development of a small-scale ground mobile robot for surveillance and inspection; the main design goals are mobility in indoor environments…

Abstract

Purpose

The aim of the research is the development of a small-scale ground mobile robot for surveillance and inspection; the main design goals are mobility in indoor environments with step climbing ability, pivoting around a vertical axis and without oscillations for stable vision, mobility in unstructured environments, low mechanical and control complexity.

Design/methodology/approach

The proposed hybrid leg-wheel robot is characterized by a main body equipped with two actuated wheels and two praying Mantis rotating legs; a rear frame with two idle wheels is connected to the main body by a vertical revolute joint for steering; a second revolute joint allows the rear axle to roll. The geometrical synthesis of the robot has been performed using a nondimensional approach for generality's sake.

Findings

The experimental campaign on the first prototype confirms the fulfilment of the design objectives; the robot can efficiently walk in unstructured environments realizing a mixed wheeled-legged locomotion.

Practical implications

Thanks to the operative flexibility of Mantis in indoor and outdoor environments, the range of potential applications is wide: surveillance, inspection, monitoring of dangerous locations, intervention in case of terroristic attacks, military tasks.

Originality/value

Different from other robots of similar size, Mantis combines high speed and energetic efficiency, stable vision, capability of climbing over high steps, obstacles and unevenness.

Details

Industrial Robot: An International Journal, vol. 41 no. 1
Type: Research Article
ISSN: 0143-991X

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Article
Publication date: 2 May 2008

Rezia Molfino, Matteo Zoppi and Luca Rimassa

The purpose of this paper is to present a cost‐effective design for a new rescue robot locomotion module using the principle of a continuous sliding membrane to achieve…

Abstract

Purpose

The purpose of this paper is to present a cost‐effective design for a new rescue robot locomotion module using the principle of a continuous sliding membrane to achieve propulsion ratio (PR) near 1. Such high PR cannot be reached by other locomotion mechanisms that have been proposed.

Design/methodology/approach

The paper first introduces the PR as a reference parameter to assess locomotion effectiveness of snake‐ and worm‐like robots. The state‐of‐the‐art is reviewed. A direction to step beyond getting PR near 1 is indicated. The way is by realizing a continuous sliding membrane. Two solutions in this direction which have been recently proposed are recalled. It is shown that none of them can be practically implemented to realize functioning systems with today's available technology. A new design with membrane actuation has been identified and it is described in detail. A prototype has been realized and earliest results and evidence of functioning described.

Findings

Critical discussion of the concept of locomotion based on a sliding membrane was conducted. A new design for a robot locomotion module applying this concept was presented. Earliest evidence of functioning and effectiveness of the new system proposed was given.

Research limitations/implications

A new locomotion principle is shown. The state‐of‐the‐art background is discussed. A design to realize the new system in a cost‐effective way is described. The research implications lie in the future development of new mobile robots with higher locomotion capability than today's available systems. Several future research and development directions are shown.

Practical implications

A new generation of more locomotion‐effective snake‐ and worm‐robots, especially for rescue application in rubble, is foreseen. The design proposed takes cost‐effectiveness and practical realizability into account.

Originality/value

The continuous sliding membrane concept had been already proposed but no reasonable realization and actuation solutions had been singled out. The design of the new locomotion system is totally new and contains several breakthrough ideas. A prototype is available proving worthy in concept and functioning. It is cost‐effective and this will allow shorter application to real robots.

Details

Industrial Robot: An International Journal, vol. 35 no. 3
Type: Research Article
ISSN: 0143-991X

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Article
Publication date: 20 March 2018

Luca Dezi, Enrico Battisti, Alberto Ferraris and Armando Papa

The link between mergers and acquisitions (M&A) and innovation has been analysed in both corporate finance studies and the innovation literature. Despite this attention…

Abstract

Purpose

The link between mergers and acquisitions (M&A) and innovation has been analysed in both corporate finance studies and the innovation literature. Despite this attention and the practical evidence that highlights different connections between these two terms, there is a need to investigate the latest trends with regard to these important topics, and to put a particular focus on the emerging paradigm of open innovation. Thus, this paper aims to provide a systematic literature review (SLR) about the relationship between M&As and the concept of innovation in the current scenario.

Design/methodology/approach

Through an SLR from 2012 to June 2017, 55 papers have been identified and analysed to give a better understanding of the motivations and the methodologies adopted in past studies.

Findings

This paper identifies various conceptual and research methodological characteristics of studies that have connected, directly or indirectly, M&As and innovation in recent years. In addition, the results highlight a scarcity of studies that explicitly or implicitly refer to the open innovation paradigm, marking only a partial understanding of this emerging phenomenon.

Originality/value

This paper improves the knowledge on the link between extraordinary corporate transactions and innovation, and it highlights that a clear consensus, particularly regarding the open innovation paradigm, is lacking. Thus the authors propose that future studies should carefully evaluate M&As by following the open innovation approach.

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Article
Publication date: 30 November 2018

Anitha Chinnaswamy, Armando Papa, Luca Dezi and Alberto Mattiacci

The World Health Organisation estimates that 92 per cent of the world’s population does not have access to clean air. The World Bank in 2013 estimated that only air…

Abstract

Purpose

The World Health Organisation estimates that 92 per cent of the world’s population does not have access to clean air. The World Bank in 2013 estimated that only air pollution (AP) was responsible for a $225bn cost in lost productivity. The purpose of this paper is to contribute to the current scholarly debate on the value of Big Data for effective healthcare management. Its focus on cardiovascular disease (CVD) in developing countries, a major cause of disability and premature death and a subject of increasing research in recent years, makes this research particularly valuable.

Design/methodology/approach

In order to assess the effects of AP on CVD in developing countries, the city of Bangalore was selected as a case study. Bangalore is one of the fastest growing economies in India, representative of the rapidly growing cities in the developing world. Demographic, AP and CVD data sets covering more than 1m historic records were obtained from governmental organisations. The spatial analysis of such data sets allowed visualisation of the correlation between the demographics of the city, the levels of pollution and deaths caused by CVDs, thus informing decision making in several sectors and at different levels.

Findings

Although there is increasing concern in councils and other responsible governmental agencies, resources required to monitor and address the challenges of pollution are limited due to the high costs involved. This research shows that with developments in the domains of Big Data, Internet of Things and smart cities, opportunities to monitor pollution result in high volumes of data. Existing technologies for data analytics can empower decision makers and even the public with knowledge on pollution. This paper has demonstrated a methodological approach for the collection and visual representation of Big Data sets allowing for an understanding of the spread of CVDs across the city of Bangalore, enabling different stakeholders to query the data sets and reveal specific statistics of key hotspots where action is required.

Originality/value

This research has been conducted to demonstrate the value of Big Data in generating a strategic knowledge-driven decision-support system to provide focused and targeted interventions for environmental health management. This case study research is based on the use of a geographic information system for the visualisation of a Big Data set collected from Bangalore, a region in India seriously affected by pollution.

Details

Management Decision, vol. 57 no. 8
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 1 January 1990

I. St. Doltsinis

A synopsis is presented of the numerical finite element methodology currently in use at the Institute for Computer Applications (ICA) for the simulation of industrial…

Abstract

A synopsis is presented of the numerical finite element methodology currently in use at the Institute for Computer Applications (ICA) for the simulation of industrial forming processes. The development of the method is based on the inelastic properties of the material with an extension towards the inclusion of elastic effects and accounts for the thermal phenomena occurring in the course of the deformation. An essential constituent of the computational procedure is the treatment of the unsteady contact developing between the workpiece material and the tool during forming, and of the associated friction phenomena. Automatic mesh generation and variable discretization adaptable to the development of the numerical solution are of importance for industrial applications. These aspects are presented and discussed. Furthermore, solution techniques for thermomechanically coupled problems are considered and investigated with respect to their numerical properties. Application to industrial forming processes is demonstrated by means of three‐dimensional hot rolling and of superplastic sheet forming.

Details

Engineering Computations, vol. 7 no. 1
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 28 October 2013

Maria Lusiani and Luca Zan

The purpose of this paper is to introduce the papers selected for the present special issue on planning and heritage. This paper aims at advancing knowledge about the…

Abstract

Purpose

The purpose of this paper is to introduce the papers selected for the present special issue on planning and heritage. This paper aims at advancing knowledge about the variety of uses and meanings of planning tools and practices in the cultural heritage field, by bridging disciplines and by building on evidence from the studies composing the special issue.

Design/methodology/approach

After a review of the debate on planning in management studies, the paper briefly outlines the features of the five selected papers and it reconstructs a composite narrative on planning in cultural heritage, as it emerges from the collected papers taken together.

Findings

In the fields of both management and urban studies a similar trajectory of “rise and fall” of rationalistic views of planning has taken place. Today's discourse of planning in urban studies is strongly dominated by the issue of inclusiveness and participation. When looking at “who” really participates in these processes, it is clear that a vast array of public and private actors is involved, at least formally. When looking at “how” they are involved, a variety of possible approaches to participative planning are in use, from more formal, to more informal and emergent ones. Whether these participative forms of planning in cultural heritage actually “work” remains in part an open question.

Originality/value

Despite the increasing centrality of plans and planning in cultural heritage management, an investigation about the state-of-the-art of the debate on planning in this field and an exploration of how planning is done in practice are missing.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 3 no. 2
Type: Research Article
ISSN: 2044-1266

Keywords

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