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Publicações

Publicações por Hélio Cristiano Castro

2019

Could Open Design learn from Wikipedia?

Autores
Castro, H; Putnik, G; Castro, A; Fontana, RD;

Publicação
29TH CIRP DESIGN CONFERENCE 2019

Abstract
Open Design (OD) is characterized as fast-growing community-based generative process, that is supported in a digital repository or platform, in order to develop a specific topic area or field. Many examples of OD are available nowadays, from software (probably the most common) to hardware, and from science and technology to business. One of the most known platforms of OD is an open editable content encyclopedia, the Wikipedia. Trough the involvement of volunteers (community that do not receive any payment for the work) in writing articles in a collaborative way was possible to develop, most probably, the extensive multi-language encyclopedia in the World started from scratch within 18 years. Based on analysis made from available Wikipedia statistical data, it is possible to conclude that from a stochastic behaviour the variables reached a transition phase in which a presence of a hysteresis between all variables were reached in between 60 to 80 months, and the editors (agents of the community) are an important asset for the system "transformation". (C) 2019 The Authors. Published by Elsevier B.V.

2019

Significance ranking method applied to some EU critical raw materials in a circular economy - priorities for achieving sustainability

Autores
Martins, F; Castro, H;

Publicação
29TH CIRP DESIGN CONFERENCE 2019

Abstract
Raw materials are very important for the development of economies and also to assure quality of life. Due to our production and consumption patterns new challenges emerged. The consumption of raw materials is very high, what raises important issues such as the depletion of resources, instability of prices and markets, risk of rupture of supply and other environmental, economic and social impacts. The European Union as many other regions of the world are implementing some strategies to overcome this problem, being the most recent the circular economy package, which intends to maintain materials as long as possible in the economic cycle, avoiding the use of new resources. There is a list of critical raw materials for EU and in this work the methodology of pairwise comparison was applied to a set of those raw materials for determining the importance of each taking in consideration several factors, such import reliance, end of life, economic importance, etc. The main goal was to develop a method based on pairwise comparison in a case of European Union to define priorities for acting, enhancing the achievement of sustainable solutions. It was also performed a sensitivity analysis. It was possible to conclude that the top position for the majority of the several raw materials does not change with the weights. Tantalum, Tungsten, Baryte and Antimony are always in the top positions. (C) 2019 The Authors. Published by Elsevier B.V.

2013

Meta-organization and manufacturing Web 3.0 for ubiquitous virtual enterprise of manufacturing SMEs: a framework

Autores
Castro, H; Putnik, G; Cruz Cunha, MM; Ferreira, L; Shah, V; Alves, C;

Publicação
EIGHTH CIRP CONFERENCE ON INTELLIGENT COMPUTATION IN MANUFACTURING ENGINEERING

Abstract
Manufacturing small and medium-sized enterprises (SMEs) are drivers for economic and social development. Their importance and competitive challenges are increasing interest and attention on private and public sectors due to hyper-competition environment. In order to establish an environment that, not only, addresses hyper-competition but also sustainability, a Meta-Organization is proposed to support advanced manufacturing business models, namely, Virtual and Ubiquitous Enterprises. This Meta-Organization is organizational platform supported by information and communication technologies (ICT), such as Web 3.0. The paper introduces a framework to approach Ubiquitous Virtual Enterprises using Meta-Organization and Manufacturing Web 3.0, adopted by manufacturing SMEs. This paper is organized in six chapters. The chapter 1 presents the environment context that manufacturing SMEs faces and introduces the framework used in the paper. In chapter 2, a review addressing Meta-Organization in context of Ubiquitous Virtual Enterprises is presented. Chapter 3 covers the topic of Meta-Organizations members, specifically manufacturing SMEs. In chapter 4, to meet the technological platform Manufacturing Web 3.0 some Web 3.0 technologies are presented. Chapter 5 presents shortly the overall framework. Finally, chapter 6 draws conclusions. (C) 2013 The Authors. Published by Elsevier B.V.

2013

Cloudlet architecture for dashboard in cloud and ubiquitous manufacturing

Autores
Ferreira, L; Putnik, G; Cunha, M; Putnik, Z; Castro, H; Alves, C; Shah, V; Varela, MLR;

Publicação
EIGHTH CIRP CONFERENCE ON INTELLIGENT COMPUTATION IN MANUFACTURING ENGINEERING

Abstract
The aim of this paper is to present a cloudlet architecture for dashboard in Cloud and Ubiquitous Manufacturing. In practice means that, with Cloud Computing adoption, Manufacturing requires management applications where ubiquity and effectiveness are enabled. If ubiquity and resources scalability, availability and capacity can be well supported by cloud, pragmatics instruments are required to support effectiveness. The architecture here presented shows the integration of enriched existing (cloud) services, as instances of resources, with layers of new services towards direct and synchronous communication between users. These Rich Internet Application (RIA) components, here named cloudlets, integration, follow dashboards organization patterns and will be supported by emergent web3.0 interaction technologies. In fact, the paper proposes a new Presentation Layer to be used in UMS and (that may be used) in any multi-layer cloud-based web application. (C) 2013 Authors. Published by Elsevier B. V.

2014

10.5937/fmet1403243s = Representational fidelity in distributed and remote lab environment

Autores
Spasojevic-Brkic, V; Putnik, G; Veljkovic, Z; Shah, V; Castro, H;

Publicação
FME Transaction

Abstract

2014

Dashboard services for pragmatics-based interoperability in cloud and ubiquitous manufacturing

Autores
Ferreira, L; Putnik, G; Cruz Cunha, MM; Putnik, Z; Castro, H; Alves, C; Shah, V;

Publicação
International Journal of Web Portals

Abstract
The real Cloud and Ubiquitous Manufacturing systems require effectiveness and permanent availability of resources, their capacity and scalability. One of the most important problems for applications management over cloud based platforms, which are expected to support efficient scalability and resources coordination following SaaS implementation model, is their interoperability. Even application dashboards need to easily incorporate those new applications, their interoperability still remains a big problem to override. So, the possibility to expand these dashboards with efficiently integrated communicational cloud based services (cloudlets) represents a relevant added value as well as contributes to solving the interoperability problem. Following the architecture for integration of enriched existing cloud services, as instances of manufacturing resources, this paper: a) proposes a cloud based web platform to support dashboard integrating communicational services, and b) describe an experimentation to sustain the theory that the effective and efficient interoperability, especially in dynamic environments, could be achieved only with human intervention. Copyright © 2014, IGI Global.

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