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2. Performance Evaluation of Data Transactions in Blockchain.

Author

Welligton dos Santos Abreu, Antonio, Coutinho, Emanuel Ferreira, and Ilane Moreira Bezerra, Carla

Abstract

Blockchain is an emerging technology, with a decentralized infrastructure avoiding third party dependency. Smartcontracts are one of the features of Ethereum blockchain, capable of running distributed applications in unreliableenvironments, enabling process automation and being one of the most sought technologies due to the highcustomization added to transactions. However, little is known about predicting the cost and execution time behavior of blockchain-based system transactions. This work aims to evaluate the performance of an Ethereum network through an application designed to analyze the cost and time of transactions that store characters in the blockchain. To meet the proposed objective, we designed an application for performing transactions with data inclusion and query on a blockchain, collecting time and cost data. As main conclusions of this work we have: the Ethereum platform proved to be inconstant in relation to the processing time of transactions on the blockchain and the application developed based on blockchain can provide a mechanism to evaluate text-type operations on Ethereum network. [ABSTRACT FROM AUTHOR]

Published
2022
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9. Design of innovative protective insoles for safety footwear

Author

Abreu, Maria José, Mendonca, Joao Pedro, Pereira, Candida Sofia, Abreu, Antonio, and Universidade do Minho

Subjects
musculoskeletal diseases, Personal Protective Equipment's (PPE's), Science & Technology, Engenharia e Tecnologia::Engenharia dos Materiais, Safety Footwear, technology, industry, and agriculture, otorhinolaryngologic diseases, Penetration Resistant Inserts, Penetration Resistant Insoles, Comfort properties
Abstract

The use of adequate protective footwear and other types of Personal Protective Equipment (PPE) has become a necessity in view of the number of accidents at work occurred in the past years. The European Community (EU) and the member states are creating strategies aiming the increase of the use of PPE’s and consequently the decrease of the number of the accidents at work and consequently the number of injuries caused by them and their severity. Currently, there are three types of protective shoe: safety shoes, protection shoes and occupational shoes. The use and specifications of this type of PPE respect the European and ISO standards. In this paper, a brief review of safety footwear and its components will be presented focusing on penetration resistant inserts. In addition, we present a project in development at University of Minho that aims to improve the existent shoes in terms of comfort using new and innovative materials., This work is financed by FEDER funds through the Competitivity Factors Operational Program - COMPETE and by national funds through FCT – Foundation for Science and Technology within the scope of the project POCI-01-0145-FEDER-007136., info:eu-repo/semantics/acceptedVersion

Published
2017

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