Recursos de colección

Repositorio da Universidade dos Açores (9.269 recursos)

O Repositório Institucional da Universidade dos Açores desenvolvido no âmbito do projecto RCAAP.

DEG - Artigos em Revistas Internacionais / Articles in International Journals

Mostrando recursos 1 - 20 de 39

  1. Sraffa on Fixed Capital, Money and the Phases of Capitalism

    Martins, Nuno O.
    In this paper I address some elements in Piero Sraffa's thinking that are connected to his conceptualization of the phases of capitalism. Sraffa describes various stages of capitalism using similar categories to the ones employed in the model of the economy provided in Production of Commodities. This is done by distinguishing the role of population, land and (circulating, intermediate and fixed) capital in each stage. Sraffa changed his conceptualization of fixed capital over the years, until he reached its final formulation. The conceptualizations of fixed capital that Sraffa discusses, together with his remarks on money which are made through an...

  2. Numerical Uncertainty and Its Implications

    Rodrigues, António F.; Martins, Nuno O.
    Copyright © 2014 António F. Rodrigues, Nuno O. Martins. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In accordance of the Creative Commons Attribution License all Copyrights © 2014 are reserved for SCIRP and the owner of the intellectual property António F. Rodrigues, Nuno O. Martins. All Copyright © 2014 are guarded by law and by SCIRP as a guardian.

  3. An analysis of Internet Banking in Portugal: the antecedents of mobile banking adoption

    Couto, João Pedro Almeida; Tiago, Maria Teresa Borges; Tiago, Flávio Borges
    In recent years, mobile operations have gained wide popularity among mainstream users, and banks tend to follow this trend. But are bank customers ready to move forward? Mobile banking appears to be a natural extension of Internet banking, . Thus, to predict consumer decisions to adopt mobile banking, it’s useful to understand the pattern of adoption of Internet banking (IB). This investigation seeks contribute to an expansion of the knowledge regarding this matter by researching Portuguese consumers’ patterns and behaviors concerning the acceptance and use intention of IB as a foundation for establishing growth strategies of mobile banking. For data...

  4. Determinants of Length of Stay: A Parametric Survival Analysis

    Moniz, Ana Isabel Arruda; Menezes, António Gomes de
    Length of stay is one of the most important decisions made by tourists as it conditions their overall expenditure and stress caused on local resources. This article estimates survival analysis models to learn the determinants of length of stay as survival analysis naturally lends itself to study the time elapsed between arrival and departure. It is found that sociodemographic profiles, such as nationality and gender, and trip attributes, such as repeat behavior, travel motive, and type of flight, are important determinants of length of stay. This article's results are important to design marketing strategies that effectively influence length of stay.

  5. Quality management and employees' attitudes: an example from certified enterprises

    Batista, Maria da Graça Câmara; Feijó, António; Silva, Francisco
    This study aims to investigate the implications of quality management system (QMS) practices in employees' attitudes relating to job involvement, job satisfaction, career satisfaction, and organizational commitment.

  6. Revisiting the Impact of Integrated Internet Marketing on Firms' Online Performance: European Evidences

    Tiago, Maria Teresa Borges; Tiago, Flávio Borges
    This research attempts to unveil some of the impacts on internet marketing and firms’ online performance driven from the adoption and integration of Enterprise Information subsystems. To accomplish this goal a framework is set and test in a sample of 9.192 European firms using Structural Equation Model estimation. This project contributes to the research on this topic with new evidence in a broad sample, and advances knowledge on the nature of the relative importance of different technological subsystems on Internet Marketing as drivers of e-business performance, applied to the European reality.

  7. Innovativeness Patterns in Different European Regions: An Empirical Approach

    Natário, Maria Manuela; Couto, João Pedro Almeida; Braga, Ascenção M. M.; Tiago, Maria Teresa Borges
    Both academic literature and regional governments are interested in the innovativeness of regions and the drivers of competitiveness, especially when considering the impacts on economic development and social progress. Innovation is the basis for global competitiveness. Innovative capacity enables regions to increase productivity and attract investments, thereby sustaining continuous progress in quality and standard of living. A literature review regarding regional innovativeness produces some insights into the effect of contextual elements on the performance of regions and reveals new perspectives on this issue. This study aimed to measure the innovativeness of different European regions and evaluate the nature of the...

  8. Assessing the Drivers of Virtual Knowledge Management Impact in European Firm's Performance: an Exploratory Analysis

    Tiago, Flávio Borges; Tiago, Maria Teresa Borges; Couto, João Pedro Almeida
    e-Business is a phenomenon that has progressed over the past decades at record speed, with considerable promise and hype. It has been embraced with varying degrees of enthusiasm and impact by both large and SME firms. Parallel with its development, E-Business has attracted research interests, seen in a plethora of new modules, programmes, models and tools. Knowledge Management (KM) is one tool that has seemed to gain a more relevant role, especially as managing knowledge becomes increasingly important to all companies. Appropriate KM practices within organisations can be seen as one of the prerequisites of enhancement of continuous performance improvement...

  9. Improvising at work: the differences between experts and novices

    Batista, Maria da Graça Câmara; Cunha, Miguel Pina e
    Improvisation is being presented as a relevant process in organizational environments marked by speed and unpredictability, but it is still an under-investigated topic. The theoretical question for which we seek to provide a preliminary insight is: How does novice behavior differ from expert behavior with regard to the use of improvisational action? We build on the integration of several disciplines to advance a theoretical model. We predict that several constructs will have differential effects on lhe adoption of improvisation by experts and novices. The paper contributes to the literature by suggesting that unexpected events with be approached differently by peopte...

  10. Leadership's impact in turnover and career abandonment intention: the Azorean hospital nurses case

    Furtado, Luis Carlos do Rego; Batista, Maria da Graça Câmara; Silva, Francisco
    The authors aimed to identify nurse managers' leadership behaviors and determine if they had a direct impact on turnover or career abandonment intention among nurses. This descriptive and inferential study was conducted in two public hospitals in Azores (Portugal). The sample consisted of 266 individuals (22 head nurses and 244 staff nurses). Data were collected during May 2010. The most expressive leadership styles were S2 (persuading) and S3 (sharing). Nurse retention seems easier when dealing with profile S2–S3 or effective adaptability. This study brings light to a severe problem of nurse retention in Portugal.

  11. Leadership and job satisfaction among Azorean hospital nurses: an application of the situational leadership model

    Furtado, Luis Carlos do Rego; Batista, Maria da Graça Câmara; Silva, Francisco
    The aim of this study was to describe nurse managers' leadership behaviours, comparing them with staff nurses' perceptions of their leader's leadership, as well as to determine if leadership components affect job satisfaction among staff nurses.

  12. Fuel price transmission mechanisms in Portugal

    Silva, Francisco; Batista, Maria da Graça Câmara; Elias, Nelson Pacheco
    This study aims to analyse the behaviour of fuel prices at the pump (unleaded gasoline and diesel) in Portugal, relative to positive and negative variations in Brent crude oil price. Applying an Autoregressive Distributed Lags (ARDL) model to weekly time series data for the period of January 2004 through May 2009, we detected some signs of asymmetry in the transmission price mechanism. However, these patterns are not statistically significant enough to reject hypotheses of symmetry in the price adjustment mechanisms of fuel in Portugal.

  13. A joint replenishment inventory location model

    Silva, Francisco; Gao, Lucia
    We introduce a distribution center location model that incorporates joint replenishment inventory costs at the distribution centers. The model is formulated as a Fixed Charge Location Problem (FCLP) which objectively considers not only location specific costs but also inventory replenishment costs. In the joint replenishment problem we consider a single item and several distribution centers in different locations and apply a similar algorithm to the one used to solve the multi-item problem. We propose a Greedy Randomized Adaptive Search Procedure (GRASP) to solve the problem.

  14. Classical surplus theory and heterodox economics

    Martins, Nuno O.
    It has recently been suggested that heterodox economics can benefit from an engagement with classical surplus theory. However, caution is often recommended due to the ideological concepts that are embedded in classical political economy. This article argues that many of the ideological concepts that are often attributed to classical political economy are actually not part of classical political economy, but rather of a “vulgar” form of political economy, a project that emerged after Ricardo. This vulgar project, often termed as “Ricardian economics,” is often mistakenly taken to be a development of classical political economy, but it is actually a rupture...

  15. National culture and research and development activities

    Couto, João Pedro Almeida; Vieira, José Cabral
    This paper examines the effect of national culture on the process of innovation and research and development activities in the subsidiaries of multinational companies. For this purpose, we use a sample of 222 subsidiaries for five European countries. The paper has drawn up two important findings. Firstly, cultural dimensions such as individualism, masculinity, power distance and uncertainty avoidance influence research and development activities of the subsidiaries. Secondly, the type of management model, defined according to the location of the parent company, influence the organization of the research and development activities.

  16. The propensity and intensity of export activities of companies operating in Europe

    Couto, João Pedro Almeida; Tiago, Maria Teresa Borges; Vieira, José Cabral; Silva, Francisco
    Previous studies have explored the substantial benefits for companies and governments of exporting. Nevertheless the role of government has been analysed mainly trough export promotion programs and the importance of the subsidiaries of multinational companies to increment a country exports has not been tested together with other variables present in the literature on export performance. This research examines the export performance of companies in Europe. A sample of 239 companies in 12 countries was analysed and their level of exports was examined, using Logit and Tobit models. The contextual variables of the country of operations were combined with company characteristics,...

  17. Territorial standards for innovation: analysis for the regions of Portugal

    Natário, Maria Manuela; Braga, Ascenção M. M.; Couto, João Pedro Almeida; Tiago, Maria Teresa Borges
    La competitividad entre las regiones y la dinámica de la innovación están íntimamente relacionadas y dependen de un sistema de innovación sólida y efi caz. Este estudio tiene como objetivo medir la capacidad de innovación en diferentes regiones portuguesas y evaluar la naturaleza del proceso de innovación y la relación entre la capacidad de innovación y su región de origen. Para la caracterización de los procesos de innovación territoriales y identifi car estándares de innovación en las regiones, este artículo analiza sus factores distintivos principales, con base en los resultados de las encuestas comunitarias sobre innovación para cada región. Por...

  18. Evaluating the determinants of national innovative capacity among european countries

    Natário, Maria Manuela; Couto, João Pedro Almeida; Tiago, Maria Teresa Borges; Braga, Ascenção M. M.
    This paper reflects upon the factors that influence the national innovative capacity that is based on the European Innovation Scoreboard database. The aim is to reflect on, and evaluate, the factors influencing national innovative capacity. A cluster analysis was conducted to verify how different countries are positioned in terms of innovation outputs and determine which factors distinguish their level of innovative capacity. The results point to the existence of four groups of countries. On the other hand, the factors identified are related to the dimensions of institutional efficiency, namely the efficiency of institutions, types of regulation, effective rule of law...

  19. The triple helix model and dynamics of innovation: a case study

    Natário, Maria Manuela; Couto, João Pedro Almeida; Almeida, Carlos Fernandes
    The purpose of this paper is to analyze the dynamics of the triple helix model in less favoured regions, examining the role of three spheres: universities, firms, and government. The paper identifies profiles of behavior in terms of triple helix model performance from the firm's perspective and recognizes key factors for successful innovation dynamics in a less favored region of Portugal.

  20. A transformational conception of evolutionary processes

    Martins, Nuno O.
    The transformational conception of social activity provides a non-deterministic Framework within which evolutionary models of natural selection can be located, and constitutes an alternative to sociological and economic traditions that adopt a deterministic conception of social processes, in which the causal effects of social structures, or technology, for example, are conceptualized in a deterministic way. Natural selection processes can be conceptualized as a more specific instance of this broad (non-deterministic) transformational conception, and hence can provide additional insight whenever addressing cases where a more specific model is required.

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