Three methods of obtaining confidence intervals for the risk ratio offailure in two independent binomial samples are compared. The three (A) method Thomas and Gart (1977), (B) an adaptation Fieller using normal distribution, (C) a proposed logarithmic transformation. On basis extensive simulations we have concluded that Method A is reasonable but conservative, B erratic should not be used, aszd C less conservative than A. C, cotnputationally simplest, recommended.

Objective: The objective of this study is to identify the perceptions Portuguese investors regarding ESG (Environmental, Social and Governance) factors. It also aims criteria that lead consider, or not, in their decisions. Theoretical Framework: concept Social, has emerged as a fundamental framework for assessing sustainability ethical impact companies. Its three dimensions – environmental, social, governance address different aspects business operations are increasingly considered...

Sharing data in the form of text is important for a wide range activities but it also raises concern about privacy when sharing that could be sensitive. Automated anonymization solution removing all sensitive information from documents. However, this challenging task due to unstructured textual and ambiguity natural language. In work, we present our implementation an automated system, built modular structure, documents written Portuguese. Four different methods are evaluated compared. Two...

We consider the vortex equations for a U(n) gauge field A coupled to Higgs $${\phi}$$ with values on n × matrices. It is known that when these are defined compact Riemann surface Σ, their moduli space of solutions closely related τ-stable holomorphic n-pairs surface. Using this fact and local factorization result matrix , we show entirely characterized by location in Σ zeros det choice internal structure at each zeros. describe explicitly spaces they connected spaces.

This paper describes a system to assist the selection of adequate reading materials support European Portuguese teaching, especially as second language, while highlighting key challenges on of linguistic features for text difficulty (readability) classification. The uses existing Natural Language Processing (NLP) tools extract linguistic from texts, which are then used by an automatic readability classifier. Currently, 52 extracted: parts-of-speech (POS), syllables, words, chunks...

This paper describes the early stages of porting REAP, a tutoring system for vocabulary learning, to European Portuguese.Students learn from authentic materials, on topics their preference.A large number linguistic resources and filtering tools have already been integrated into ported version.We modified current also target oral comprehension.

The explicit solutions of the Bogomolny equations for N vortices on a sphere radius R^2 > are not known. In particular, this has prevented use geodesic approximation to describe low energy vortex dynamics. paper we introduce an approximate general solution equations, valid close N, which many properties true solutions, including same moduli space CP^N. Within framework approximation, metric is then computed be proportional Fubini- Study metric, leads complete description particle

This paper presents on-going research on the building of an electronic dictionary frozen sentences European Portuguese. It will focus problems arising from description their formal variation in view natural language processing

This paper presents the cic_ualg's system that took part in Discriminating between Similar Languages (DSL) shared task, held at VarDial 2017 Workshop. year's task aims identifying 14 languages across 6 language groups using a corpus of excerpts journalistic texts. Two classification approaches were compared: single-step (all languages) approach and two-step (language group then within group) approach. Features exploited include lexical features (unigrams words) character n-grams. Besides...

RESUMO Este artigo apresenta uma análise da utilização de diferentes modalidades ensino no superior, considerando o contexto atual provocado pela COVID-19. O estudo baseia-se em revisão literatura sobre tema e questionário aplicado a 225 estudantes professores universitários do Brasil Portugal, dos quais 144 tiveram suas aulas presenciais substituídas por distância. A maioria respondentes considera distância pior que presencial, comunicação pior, avaliação mais difícil, exigência maior...

Household water use structure can vary significantly depending on several factors like personal habits, socio-economic, cultural and climatic conditions. In the absence of Portuguese data domestic consumption, a field study was carried out in order to obtain information that could help support definition conservation measures within scope National Program for Efficient Use Water. The paper describes methodology results obtained this study, which involved approximately 100 participants made...

Technology plays a very important role in education and Intelligent Computer-Assisted Language Learning (iCALL) has emerged as complementary or even alternative method to the conventional language teaching practices. The automatic generation (and correction) of exercises based on real texts extracted from corpora constitutes non-trivial challenge iCALL tutorial systems, may involve use sophisticated Natural Processing tools large-scale linguistic resources. This paper presents main issues...