Cookies Policy
The website need some cookies and similar means to function. If you permit us, we will use those means to collect data on your visits for aggregated statistics to improve our service. Find out More
Accept Reject
  • Menu
Publications

Publications by CEGI

2014

Definition of a Model Based on Bibliometric Indicators for Assessing Applicants to Academic Positions

Authors
Vieira, ES; Cabral, JAS; Gomes, JANF;

Publication
JOURNAL OF THE ASSOCIATION FOR INFORMATION SCIENCE AND TECHNOLOGY

Abstract
A model based on a set of bibliometric indicators is proposed for the prediction of the ranking of applicants to an academic position as produced by a committee of peers. The results show that a very small number of indicators may lead to a robust prediction of about 75% of the cases. We start with 12 indicators to build a few composite indicators by factor analysis. Following a discrete choice model, we arrive at 3 comparatively good predicative models. We conclude that these models have a surprisingly good predictive power and may help peers in their selection process.

2014

A multidisciplinary framework to support the design of injection mold tools

Authors
Ferreira, I; Cabral, JA; Saraiva, P; Oliveira, MC;

Publication
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION

Abstract
The design of injection mold tools is a complex process for which market pressures demand ever-shorter development time and higher quality level. Thus, it is considered imperative to adopt new methods and tools to support the design process, in order to achieve a more effective mold design solution. Based on this assumption, a multidisciplinary framework was developed, centered on Design for Six Sigma methodology and reinforced with a set of highly valued techniques, namely: the European Customer Satisfaction, the Axiomatic Design and the Multidisciplinary Design Optimization. As a result, a platform was built to support the design of any mold tool without undercuts, which tackles the design of an injection mold as a fully integrated multidisciplinary optimization problem, oriented by customer preferences and their impositions. A set of specific analysis sub-modules is integrated through an overseeing optimization code system, responsible for the numerical simulation of the injection process. This platform was validated through the comparison with an existing mold, whose results attained highlight the great potential of the proposed framework to achieve mold design improvement. In particular, the value of mold solutions generated led to a global improvement on mold performance by 5 %.

2014

Urban public transport service co-creation: leveraging passenger's knowledge to enhance travel experience

Authors
Nunes, AA; Galvao, T; Falcao e Cunha, JFE;

Publication
TRANSPORTATION: CAN WE DO MORE WITH LESS RESOURCES? - 16TH MEETING OF THE EURO WORKING GROUP ON TRANSPORTATION - PORTO 2013

Abstract
Mobile devices are increasingly pervasive and are transforming information distribution paradigms. A rapidly growing segment of urban public transport passengers carry mobile computing devices, permanently and on the move. In a context of thinning financial resources, getting customers involved in the actual delivery of a public transport service as real-time information consumers and providers, may be a powerful method to enhance travel experience while reducing operational costs for the service operator. Each and every customer travelling on a public transport network has unique knowledge about the service operation as it unfolds. This paper proposes a framework that aims to unify public transport passengers' collective intelligence through crowdsourcing, using their mobile computing devices and dedicated web services. It strives to intensify win-win relationships between public transport passengers and operators. The structured exchange of information is sustained by a validation mechanism for data reliability, and an incentive mechanism to encourage passenger participation. Passengers benefit from rich real-time data tailored to their profiles, to ease their journeys and improve travel experience, in exchange for their own participation providing and validating information. Operators gain access to rich customer generated data, which in an aggregated format may provide a real-time assessment of customer experience and of local performance across the entire network operation. Operators may be required to reward travellers who become prolific co-creators of the public transport service, but higher customer experience levels, lesser needs for investment in controlling mechanisms, and continuous free monitoring of customer opinions can jointly lead to financial returns. (C) 2013 The Authors. Published by Elsevier Ltd.

2014

State of the Art and Future Perspectives for Smart Support Services for Public Transport

Authors
Falcao e Cunha, JFE; Galvao, T;

Publication
SERVICE ORIENTATION IN HOLONIC AND MULTI-AGENT MANUFACTURING AND ROBOTICS

Abstract
This paper summarizes existing systems and research on information transport services, and proposes a hypothetic scenario for future travellers using public transport. Increased distributed intelligence in pervasive mobile smart devices and in sensor networks in public transport vehicles is enabling a new approach for enhancing the experience of public transport customers. Such environment could be modelled through a distributed multi-agent service system. This paper presents advanced information services already available on such environments, in particular the MOVE-ME smartphone application, and indicates a possible service environment where people's feedback may benefit all transport service stakeholders. Mobile computing and crowdsourcing are key enablers for enhancing user experience in the transport services, and also for enhancing overall public transport services. Better experience leads to increased usage of shared mobility modes, and therefore to more sustainable cities in the future. Concerns about data security, and anonymity of travellers will need to be adequately addressed in the future scenarios presented.

2014

A proposal for a public transport ticketing solution based on customers' mobile devices

Authors
Ferreira, MC; Novoa, H; Dias, TG; Falcao e Cunha, JFE;

Publication
TRANSPORTATION: CAN WE DO MORE WITH LESS RESOURCES? - 16TH MEETING OF THE EURO WORKING GROUP ON TRANSPORTATION - PORTO 2013

Abstract
The worldwide economic and financial crisis is trigger g a number of difficulties to several sectors, including public transport industry. Public Transport Operators (PTOs) have fewer resources to invest, nevertheless they need to achieve good results and improve their service offerings. Therefore, this paper aims to present an innovative ticketing solution based on customers' mobile devices, which intends to minimize the investment cost from the PTOs and customers' perspective, maximizing consumer's acceptance. The proposed solution doesn't require any interaction with PTOs infrastructures to purchase or validate a ticket, being solely based on customers' mobile devices with an internet connection. The approach presented in this paper is the result of a project involving the major PTO in Porto city and customers who contributed to the design, requirements elicitation and evaluation of the system. A prototype of the system has already been tested by a group of potential users. (C) 2013 The Authors. Published by Elsevier Ltd.

2014

A GRASP-based Approach for Demand Responsive Transportation

Authors
Gomes, R; de Sousa, JP; Dias, TG;

Publication
International Journal of Transportation

Abstract

  • 141
  • 196