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Article
Publication date: 1 April 2003

Paolo Pirjanian, Niklas Karlsson, Luis Goncalves and Enrico Di Bernardo

One difficult problem in robotics is localization: the ability of a mobile robot to determine its position in the environment. Roboticists around the globe have been working to…

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Abstract

One difficult problem in robotics is localization: the ability of a mobile robot to determine its position in the environment. Roboticists around the globe have been working to find a solution to localization for more than 20 years; however, only in the past 4‐5 years we have seen some promising results. In this work, we describe a first‐of‐a‐kind, breakthrough technology for localization that requires only one low‐cost camera (less than 50USD) and odometry to provide localization. Because of its low‐cost and robust performance in realistic environments, this technology is particularly well‐suited for use in consumer and commercial applications.

Details

Industrial Robot: An International Journal, vol. 30 no. 2
Type: Research Article
ISSN: 0143-991X

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Article
Publication date: 5 July 2024

Rejane Santana da Silva, Gustavo Quiroga Souki, Alessandro Silva de Oliveira, Luís Sérgio Gonçalves Vieira and Manuel Serra

This study aimed to investigate the influence of the perceived quality by students regarding their experiences in vocational schools in tourism, hospitality and food service on…

139

Abstract

Purpose

This study aimed to investigate the influence of the perceived quality by students regarding their experiences in vocational schools in tourism, hospitality and food service on cognitive and affective responses (satisfaction, self-efficacy expectations and self-regulation strategies of motivation for learning - SRSML) and commitment (behavioural response).

Design/methodology/approach

A cross-sectional survey was conducted with 454 students from twelve Turismo de Portugal IP-affiliated schools. The theoretical framework was rooted in Self-Determination Theory (SDT) and PLS-SEM, using ADANCO 2.3 software to test the proposed model.

Findings

Perceived quality by students concerning their school experiences are socio-contextual factors that directly influence their satisfaction and self-efficacy expectations (cognitive and affective responses). Satisfaction and self-efficacy expectations positively affected SRSML. Finally, satisfaction and the SRSML positively impacted the students` commitment to schools (behavioural response).

Originality/value

This study contributes to academia by comprehensively addressing 16 perceived quality dimensions within vocational education. It aligns with SDT, revealing that socio-contextual factors affect students’ cognitive, affective, and behavioural responses. Additionally, it demonstrates positive relationships between student satisfaction, self-efficacy expectations, SRSML, and students’ commitment to vocational education institutions. This study emphasises the multidimensional nature of perceived quality, urging educational institutions to address tangible and intangible dimensions to develop strategies to provide high-quality experiences, increasing students` satisfaction, self-efficacy expectations, motivation, and commitment.

Details

International Journal of Educational Management, vol. 38 no. 6
Type: Research Article
ISSN: 0951-354X

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Available. Content available

Abstract

Details

International Journal of Sustainability in Higher Education, vol. 24 no. 2
Type: Research Article
ISSN: 1467-6370

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Article
Publication date: 9 March 2015

Cleomara Salete Lewinski, Itamar Luís Gonçalves, Ana Cláudia Piovezan Borges, Nessana Dartora, Lauro Mera de Souza and Alice Teresa Valduga

– The aim of this paper is to evaluate the effects of ultraviolet (UV) light on the color, secondary metabolites and sensory acceptance of processed yerba-mate.

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Abstract

Purpose

The aim of this paper is to evaluate the effects of ultraviolet (UV) light on the color, secondary metabolites and sensory acceptance of processed yerba-mate.

Design/methodology/approach

Samples were exposed to UV light for 72 hours. The colorimetric coordinates (L*, a* and b*) were analyzed every 6 hours, while secondary metabolites and sensory acceptance were assessed at the beginning and at the end of the experiment. Methylxanthines and phenolic compounds were quantified by ultra performance liquid chromatography photodiode array detectors and vegetable pigments by UV/visible spectrophotometry.

Findings

Decreases in methylxanthines, rutin and isomers of chlorogenic acids were found, along with an increase in isomers of dicaffeoylquinic acids. The product showed less sensory acceptance compared to the control. These results show that UV light treatment of yerba-mate accelerates the maturation process.

Practical implications

UV light can be used in yerba-mate maturation with a reduction time and can ensure microbiological safety with small changes in its phytochemical profile.

Originality/value

This paper is the first report of a novel strategy to investigate the yerba-mate maturation using UV light.

Details

Nutrition & Food Science, vol. 45 no. 2
Type: Research Article
ISSN: 0034-6659

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Article
Publication date: 13 July 2015

Itamar Luís Gonçalves, Nessana Dartora, Ana Cláudia Piovezan Borges, Ana Paula Picolo, Rogério Marcos Dallago, Lauro Mera de Souza and Alice Teresa Valduga

The purpose of this paper was to assess the changes in secondary metabolites and color during yerba-mate aging under controlled conditions. In Uruguay and Paraguay, the yerba-mate…

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Abstract

Purpose

The purpose of this paper was to assess the changes in secondary metabolites and color during yerba-mate aging under controlled conditions. In Uruguay and Paraguay, the yerba-mate matured, in which chlorophyll degradation occurs, is preferred. For the matured product, the yerba-mate is stored for six months to one year.

Design/methodology/approach

Processed yerba-mate was submitted to 35°C and 80 per cent humidity during 42 days in a climatic chamber. Samples were collected every seven days, and the phenolic compounds/methylxanthines were quantified by ultra-performance liquid chromatography – photodiode array and chlorophylls/phaeophytins by spectrophotometry. L*, a* and b* colorimetric coordinates were measured.

Findings

The most expressive changes in the color occur in the first 14 days. At this time, 23.161 ± 2.984 per cent of total chlorophyll was degraded, considering that in 42 days, 37.458 ± 0.955 per cent is degraded, according to an exponential model. A positive correlation between theobromine amount and maturation time was found. This was verified by an increase in dicaffeoylquinic acid concentrations and small changes in chlorogenic acid isomers.

Practical implications

The results indicate that this is a viable accelerated yerba-mate maturation process according to economics and nutraceutics.

Originality/value

The paper has reported here a novel strategy to promote the yerba-mate maturation using controlled conditions.

Details

Nutrition & Food Science, vol. 45 no. 4
Type: Research Article
ISSN: 0034-6659

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Publication date: 12 January 2021

Jose Bento da Silva and Paolo Quattrone

This paper discusses how mystery was imprinted into the Jesuit Spiritual Exercises, supporting their diffusion across space and time. It shows that the book of the Spiritual…

Abstract

This paper discusses how mystery was imprinted into the Jesuit Spiritual Exercises, supporting their diffusion across space and time. It shows that the book of the Spiritual Exercises is a practice in itself and fosters a practice or set of practices. The book is more than an object: it is an action, unleashed not by the specification of what actions it dictates but by the mystery the “book-as-practice” carries. The paper contributes to the literature on practice-driven institutionalism, namely by showing how mystery furthers our understanding of the mutual constitution of practices and institutions. The Spiritual Exercises have been practiced for more than four centuries, even though their meaning is not stable and they are never fully understood. Therefore, our paper asks: how do the Jesuits understand what they have to do if the book does not prescribe everything? The authors argue that it is indeed this mystery that distinguishes religious practices, explaining their endurance across time and space and, henceforth, their institutionalization. The authors show that the Spiritual Exercises are to be practiced and it is this practicing that allows them to diffuse and institutionalize a new understanding of how the individual relates to God. “God’s will” is searched through the practicing, without ever being determined by the practice. It is by practicing the book that the mystery of “God’s will” reveals itself. Moreover, “God’s will” is never known or knowable. Instead, it is embodied and felt while practicing the book of the Exercises. Emotions thus reconcile, through mystery, the book and the practicing of it. Our paper contributes to practice-driven institutionalism by showing how mystery can drive institutionalization processes.

Details

On Practice and Institution: New Empirical Directions
Type: Book
ISBN: 978-1-80043-416-5

Keywords

Available. Open Access. Open Access
Article
Publication date: 8 September 2022

Tiago Cardão-Pito

312

Abstract

Details

European Journal of Management Studies, vol. 27 no. 1
Type: Research Article
ISSN: 2183-4172

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Article
Publication date: 29 April 2021

Thais Coutinho Gonçalves Silva, Rosley Anholon, Izabela Simon Rampasso, Osvaldo Luiz Gonçalves Quelhas, Walter Leal Filho, Luis Antonio Santa-Eulalia and Francisco Rodrigues Lima Junior

This article aims to evaluate the integration level of a quality management system (QMS) and an environmental management system (EMS) in a tire manufacturer and propose a guide to…

262

Abstract

Purpose

This article aims to evaluate the integration level of a quality management system (QMS) and an environmental management system (EMS) in a tire manufacturer and propose a guide to evaluate the integration of these systems in companies.

Design/methodology/approach

The methodological strategies used in this research were literature review; and case study, with interviews to verify professionals' perception about benefits from integration. Data from interviews were analyzed through Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS).

Findings

The results showed that the studied company has a simple level of integration, observing only some low intensity benefits. Thus, it was recommended that the company partially integrate its management systems (MSs) before evolving into something more complex. The literature and the findings of case study were used as basis for proposing a guide to evaluate MS integration.

Originality/value

Lessons learned throughout the study and the suggested guide can support other companies to assess the integration level of their QMS and EMS. Thus, the findings presented here can be useful for researchers and managers.

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Article
Publication date: 9 October 2018

Izabela S. Rampasso, Rosley Anholon, Dirceu Silva, Robert Eduardo Cooper Ordóñez, Osvaldo Luiz Gonçalves Quelhas and Luis Antonio De Santa-Eulalia

The Mechanical Engineering course at the University of Campinas is composed of different disciplines in the areas of materials, mechanical design, manufacturing (production and…

683

Abstract

Purpose

The Mechanical Engineering course at the University of Campinas is composed of different disciplines in the areas of materials, mechanical design, manufacturing (production and manufacturing), computational systems, thermal and fluids. In the manufacturing area, in particular, there is a discipline entitled Productive Systems whose main objective is to offer to the student a global vision about operations management. In the field of operations management, sustainability is gaining more and more importance; thus, it is important to develop in the students a critical sense about social and environmental aspects. Thus, this paper aims to present the main initiatives developed in the discipline to promote sustainability in engineering students.

Design/methodology/approach

Since 2015, the professors responsible for the Productive Systems discipline, assisted by post-graduate students and professors from other universities, have begun to redesign the discipline, including debates, lectures, projects and other initiatives to provide a critical view concerning the traditional concepts taught. The discipline has been performed three times with this new conception. The methodology to structure this research was literature review, documental analyses of the discipline records and meetings with professors that participated in the initiatives. An Action Research approach was performed by two professors and a graduate student. The authors of this paper also compared the results with those obtained by initiatives performed at Chalmers University of Technology (Sweden).

Findings

This study allowed to reinforce some results from initiatives performed at Chalmers University of Technology (Sweden); however, some differences were identified. For example, similar to the initiatives mentioned, the professors of University of Campinas had problems with didactic books, as they loosely integrate the basic operations management concepts with sustainable development fundamentals. On the other hand, debates related to social sustainability were considered positive from the point of view of the professors and students, differing from initiatives performed at Chalmers University of Technology.

Research limitations/implications

Results come from one field study (University of Campinas) when professors of the Mechanical Engineering course try to integrate operations management concepts and sustainable development. Different results may be observed by other higher education institutions.

Practical implications

The authors of this paper believe that the diffusion of these initiatives can stimulate other professors and researchers in the field to broaden the academic debate about the insertion of sustainability into engineering courses.

Originality/value

There are few papers presenting didactic experiences and empirical results about the integration of operations management concepts and sustainable development. Results of this paper reinforce some good practices and they also present other ones, in a way that extend the debate about educational engineering.

Details

International Journal of Sustainability in Higher Education, vol. 20 no. 2
Type: Research Article
ISSN: 1467-6370

Keywords

Available. Open Access. Open Access
Article
Publication date: 22 June 2022

Joana Dos Santos Gonçalves, Ricardo Mateus, José Dinis Silvestre, Ana Pereira Roders and Luís Bragança

This research presents the development of a Building Passport for Sustainable Conservation (BPSC) as a questionnaire with a set of 23 core indicators, for a baseline assessment of…

1111

Abstract

Purpose

This research presents the development of a Building Passport for Sustainable Conservation (BPSC) as a questionnaire with a set of 23 core indicators, for a baseline assessment of heritage buildings. The aim of this tool is to identify priorities for future interventions, by recognising the contributions of heritage buildings to sustainability that should be preserved and the fragilities that need to be improved.

Design/methodology/approach

The BPSC uses a selection of core indicators for sustainability observable on heritage buildings. It was applied to four different case studies of modern heritage in the Netherlands, to verify its applicability and limitations.

Findings

The results suggest that this tool has the potential to contribute to an expedite assessment, reaching consensual evaluations of priorities for sustainable conservation, while reducing the time and cost of the process, contributing to support informed redesign decisions.

Originality/value

Recently, existing building sustainability assessment (BSA) tools have been adapted and new BSA tools developed for heritage buildings. Some tools target existing buildings, but seldom cover cultural significance and heritage values. Others target the after-redesign situations – aiming at assessing how sustainable the redesign is. Often BSA tools are complex and time-consuming, with extensive indicators and data requirements. The BPSC developed in this research covers the main aspects of sustainability and related heritage values, in a simpler tool for a baseline assessment.

Details

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

Keywords

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