Sequences of knots and their limits

Hyperfinite knots, or limits of equivalence classes of knots induced by a knot invariant taking values in a metric space, were introduced in a previous article by the author. In this article, we present new examples of hyperfinite knots stemming from sequences of torus knots

The impact of the international press in Portugal

As the international press fixes its gaze on Portugal once again, it seems to do so with little awareness of its disproportional impact in that country’s opinion- and policy makers. Portuguese journalists, pundits and politicians closely monitor each reference to the country’s situation. They frequently cite foreign speeches and articles to justify their own interpretations of the crisis in Portugal as well as possible solutions to overcome it. Yet taking international media discourse at face value, using it as incontrovertible analytical basis and central focus of policy, risks dangerously underestimating the full implications of the current situation

‘A Strategy for Southern Europe’: Lisbon Launch

The Portuguese launch of the LSE IDEAS Special Report ‘A Strategy for Southern Europe’ – released by the Southern Europe International Affairs Programme at LSE IDEAS – took place on 23 November 2013, at the Teatro Nacional Dona Maria II, in Lisbon. The event was organised in collaboration with the Instituto de História Contemporânea (IHC), based at the Universidade Nova de Lisboa. After being introduced by high-profile academics, the report served as starting point for a roundtable where renowned Portuguese analysts discussed the specific situation of Portugal regarding the themes addressed in the report

The transition to IFRS: disclosures by Portuguese listed companies

In the context of the CESR and of the Portuguese market regulator recommendations regarding the disclosure of the impacts of the transition to IFRS, this paper analyses the content of those disclosures by Portuguese listed companies. We found a high degree of variability among the disclosure either regarding the qualitative (narrative explanations of transition) or quantitative (reconciliations) disclosures. The results show that the objective of comparability, relevance and understandability stated in CESR’s recommendation were not achieved. Regarding accounting changes, the analysis shows that the reported impacts by companies confirmed expectations based on prior de jure studies on major impacts of changing from Portuguese GAAP to IFRS; these major impacts regard the recognition of intangibles, the accounting treatment of goodwill and financial instruments. Finally, Gray’s (1980) “conservatism” index was computed using the reconciliated profits to IFRS reported by companies. This analysis shows that Portuguese standards are more conservative than IFRS. This study is relevant to several parties: to the market regulators and policy makers in predicting the level of compliance with IFRS and calling attention for the importance of enforcement mechanisms; to the preparers, auditors and users in identifying the most problematic areas of implementation of IFRS.International Accounting, Disclosure, IAS/IFRS, Portugal

Margarine products quality monitoring using reflectance UV-VIS-SWNIR spectroscopy

Margarine is a term that can indicate any of a wide range of butter substitutes. Due to the great diversity of the raw material, margarine end-product quality characteristics are expected to be highly diversified. This article proposes the use of reflectance UV-VIS-SWNIR spectroscopy to monitor the margarine end-product quality properties. The main effort in this work was the development of a fast monitoring procedure to assess the quality of the manufactured margarines. 
The study was performed on two margarine products: regular margarine (less than 80% fat) and reduced-fat margarine (less than 60% fat). The nine product samples were collected during the production line normal operating conditions on different days. The samples had the surface cleaned in order to remove any sign of oxidized material. Then, spectra were collected by a reflectance probe normal to the sample surface. The samples temperature was recorded (10.0± 2.0ºC) and the probe-sample distance was kept constant for all the samples. The integration time was set to 40s for the collection of the five UV/VIS spectra per samples; the three VIS/NIR spectra per sample were collected using a 10s integration time.
The data analysis was performed on each product and for each spectral range independently. The spectra were normalized by its maximum intensity and the corrected for using a robust multiplicative scatter correction algorithm. A principal component analysis was performed to the pre-process spectra and the multivariate statistical process control limits were determined with bootstrap for each product/spectral range.
Results show that UV-VIS-SWNIR reflectance spectroscopy provides a quick and fast assessment of these products characteristics and thus it can be used as an indication of the overall product variability

Superman vs. the Nuclear Threat in the Late Cold War

UID/HIS/04209/2019 IF/01579/2015publishersversionpublishe

Accommodating and confronting the Portuguese dictatorship within NATO, 1970-4

IF/01579/2015 UID/HIS/04209/2013During the early 1970s, NATO member-states such as Norway, Denmark, and the Netherlands repeatedly sought to use the Atlantic Alliance as a forum to confront Portuguese domestic and colonial policies. However, the larger members of the organisation - including the United States, the UK, France, and West Germany - successfully blocked their efforts. While the former expressed concern over the challenges posed by the Lisbon regime to NATO’s credibility at home and abroad, the latter sought to preserve their interests and institutional cohesion in view of the challenges posed by détente. This fault line reflected core differences in the allies’ perspectives about both Portugal and NATO itself. Drawing on extensive multi-archival research, this article examines the motivations and actions of various member-states on the North Atlantic Assembly and the NATO Council ministerial meetings. It reconsiders the international dimension of the Marcelo Caetano dictatorship and the connection between the cold war framework and the process of Portuguese resistance to decolonisation in Africa.authorsversionpublishe

A Captivated Audience?

UIDB/04209/2020 UIDP/04209/2020authorsversionpublishe