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Firm Performance and Modes of Innovation

It has been shown that firms tend to develop different modes of innovation, based on the relationship between the different types of underlying knowledge and learning processes. This paper seeks to identify different modes of business innovation, relating them to firms’ innovative and economic performance, and to analyze the relationship between the different innovation modes and the economic impact of the cris...

Intervenção psicológica positiva em grupo: forças e virtudes na reabilitação pó...

A New PACS Model

In most hospitals, storage, distribution and presentation of medical images is based upon X-ray film. It allows a high quality image although cost and volume lead to conditioning it's use in storage and  distribution of images. (...)Keywords: image communication; image storage; medical information systems; biomedical engineeringM.S., 1996more info. http://opac.ua.pt/F/?func=find-b&find_code=SYS&am...

A note on (dis)investment options and perpetuities under CIR interest rates

In this chapter, we discuss alternative ways of computing the oprions to invest in and divest from an investment project in a CIR economy (Cox et al., Ecomometrica 53(2): 385-408, 1985). Moreover, different methods of determining CIR perpetuities will also be analysed.

On the computation of option prices and Greeks under the CEV model

Pricing options and evaluating Greeks under the constant elasticity of variance (CEV) model requires the computation of the non-central chi-square distribution function. In this article, we compare the performance, in terms of accuracy and computational time, of alternative methods for computing such probability distributions against an externally tested benchmark. In addition, we present closed-form solutions ...

Absolute diffusion process: sensitivity measures

The constant elasticity of variance (CEV) model of Cox (Notes on Option Pricing I: Constant Elasticity of Variance Diffusions, Working paper, Stanford University (1975)) captures the implied volatility smile that is similar to volatility curves observed in practice. The diffusion process has been used for pricing several financial option contracts. In this paper we present the analytical expressions of sensitiv...

MOOC : massive open online course : numa instituição portuguesa de ensino superior

Este artigo centra-se na apresentação de uma experiência pedagógica que assumiu a forma de MOOC – Massive Open Online Course, promovida pelo Centro de Competência TIC da Escola Superior de Educação de Santarém (CCTICESES). Em primeiro lugar, enquadra os leitores na origem e tipologia do conceito, em segundo, foca a construção do curso no seu aspeto pedagógico, exploratório e de inspiração conectivista. Finalmen...

A casa da marca. Promessa, experiência e relação na arquitetura.

Dissertação para obtenção do grau de Mestre em Arquitectura.

O sistema de controlo interno do PIPDI: empreendedorismo social, uma realidade

Molecular markers for assessing must varietal origin