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Publicações

2019

Subsidiary survival: a case study from the Portuguese electronics industry

Autores
Silva, P; Moreira, AC;

Publicação
REVIEW OF INTERNATIONAL BUSINESS AND STRATEGY

Abstract
Purpose The existing literature suggests that multinational corporations (MNCs) divest subsidiary units whenever they cease to enjoy the advantages of ownership, location or internalization. However, not all MNCs divest under these conditions. This paper aims to explore the factors that contributed to the survival of a particular subsidiary and prevented it from being divested. Design/methodology/approach The analysis focuses on an individual subsidiary of a large foreign MNC in the electronics industry, which divested other subsidiaries from Portugal. Data were collected using semi-structured interviews. Findings The subsidiary's diverse customer base, specificity and high level of efficiency, the local advantages, the existing governmental agreements and the parent MNC's previous unsuccessful relocation experiences seem to have contributed to the survival of the subsidiary. Research limitations/implications - Although the results of the case study are not generalizable to the entire population of firms, the featured case study is a rare survival success story in the Portuguese electronics industry. Practical implications - The proposed framework may offer public authorities measures to create conditions to encourage firms to retain their investment in a particular site. For corporate strategists, new perspectives on subsidiary survival are provided. Originality/value This paper is one of the few qualitative studies in the field of subsidiary survival. The results offer an integrative framework on which factors contribute to the survival of a subsidiary located on a comparatively unfavorable labor cost location and support the role of the organizational learning and of previous failed relocation experiences and relocation barriers when a parent MNC decides whether to retain a unit.

2019

The Influence of Age and Gender in the Interaction with Touch Screens

Autores
Rocha, R; Carneiro, D; Novais, P;

Publicação
PROGRESS IN ARTIFICIAL INTELLIGENCE, PT II

Abstract
Touch screens are nowadays one of the major interfaces in the interaction between humans and technology, mostly due to the significant growth in the use of smartphones and tablets in the last years. This broad use, that reaches people from all strata of society, makes touch screens a relevant tool to study the mechanisms that influence the way we interact with electronic devices. In this paper we collect data regarding the interaction patterns of different users with mobile devices. We present a way to formalize these interaction patterns and analyze how aspects such as age and gender influence them. The results of this research may be relevant for developing mobile applications that identify and adapt to the users or their characteristics, including impairments in fine motor skills or in cognitive function.

2019

pTASC: Trustable Autonomous Secure Communications

Autores
Sousa, PR; Cirne, A; Resende, JS; Martins, R; Antunes, L;

Publicação
ICDCN '19: PROCEEDINGS OF THE 2019 INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING AND NETWORKING

Abstract
The number of devices connected to the Internet has been increasing exponentially. There is a substantial amount of data being exchanged among numerous connected devices. The added convenience brought by these devices spans across multiple facets of everyday life, such as drivers reporting an accident through dash cams, patients monitoring their own health, and companies controlling the safety of their facilities. However, it is critical to increase safety and privacy across the data generated and propagated by these devices. Previous works have focused mainly on device management and relied on centralized solutions namely Public Key Infrastructure (PKI). This paper describes a novel mechanism that ensures secure autonomous communication between Internet of Things (IoT) devices, while using a completely decentralized solution that mitigates the classical single points-of-failure problem. This is accomplished by a new peer-to-peer protocol using Short Authentication Strings (SAS), in which verification is made through a Limited-Location Channel (LLC).

2019

Landslide movement monitoring with ALOS-2 SAR data

Autores
Liu, G; Guo, HD; Perski, Z; Fan, JH; Sousa, JJ; Yan, SY; Tang, PP;

Publicação
THIRD INTERNATIONAL CONFERENCE ON ENERGY ENGINEERING AND ENVIRONMENTAL PROTECTION

Abstract
Landslide is a hazard that threaten the people who lives in the mountain area, it comes active especially rainy seasons and causes a large number of casualties every year. The movement of the slope is an indicator of activity of the landslide, it is helpful to capture the precursor of the activity, the monitoring of the movement of the slope is very important. However it is a difficult problem due to complex topography, cloudy and rainy weather for optical sensors, In this paper we will show the capability of up-to-date Advanced Land Observing Satellite-2 (ALOS-2) Synthetic Aperture Radar (SAR) data in monitoring the movement of the landslide which located in south China, which can capture the fast and slow movement with different spatial and temporal baseline combination, the results shows that the L-band SAR data has its advantage in monitoring the movement of the landslides especially in the low latitude, cloudy and rainy area.

2019

Logic, Algebra, and Geometry at the Foundation of Computer Science

Autores
Hoare, T; Mendes, A; Ferreira, JF;

Publicação
FMTea

Abstract
This paper shows by examples how the Theory of Programming can be taught to first-year CS undergraduates. The only prerequisite is their High School acquaintance with algebra, geometry, and propositional calculus. The main purpose of teaching the subject is to support practical programming assignments and projects throughout the degree course. The aims would be to increase the student’s enjoyment of programming, reduce the workload, and increase the prospect of success.

2019

A Evolução da Análise de Sinais Biomédicos no Auxílio ao Diagnóstico Clínico

Autores
Leite, A; Pereira, LT; Ricardo, S;

Publicação
História da Ciência e Ensino: construindo interfaces

Abstract
Resumo A ana´lise de sinais biome´dicos desempenha, atualmente, um papel fundamental no auxi´lio ao diagno´stico cli´nico. Os avanc¸os cienti´ficos multiplicam-se a um ritmo frene´tico numa sociedade cada vez mais consciente e desejosa de soluc¸o~es para os problemas de sau´de. Este trabalho pretende dar uma perspetiva histo´rica dos avanc¸os no estudo dos sinais biome´dicos e refletir a sua importa^ncia na sociedade.Palavras-chave: Sinais Biome´dicos; diagno´stico cli´nico; avanc¸os Abstract Currently the biomedical signal analysis plays a fundamental role in helping clinical diagnosis. Scientific advances multiply at a frenetic pace in a society that is increasingly aware of and desirous of solutions to health problems. The need for constant updating of the means of clinical diagnosis is necessary to meet the demands of the world today. This work intends to give a historical perspective of advances in the biomedical signal study and to reflect its importance in society. Keywords: Biomedical Signal analysis, clinical diagnosis, scientific advances

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