The belief in TAP

We show the similarity between belief propagation and TAP, for decoding corrupted messages encoded by Sourlas's method. The latter is a special case of the Gallager error- correcting code, where the code word comprises products of K bits selected randomly from the original message. We examine the efficacy of solutions obtained by the two methods for various values of K and show that solutions for K>=3 may be sensitive to the choice of initial conditions in the case of unbiased patterns. Good approximations are obtained generally for K=2 and for biased patterns in the case of K>=3, especially when Nishimori's temperature is being used.

TAP for parity check error correcting codes

We employ the methods presented in the previous chapter for decoding corrupted codewords, encoded using sparse parity check error correcting codes. We show the similarity between the equations derived from the TAP approach and those obtained from belief propagation, and examine their performance as practical decoding methods.

The TAP approach to intensive and extensive connectivity systems

The Thouless-Anderson-Palmer (TAP) approach was originally developed for analysing the Sherrington-Kirkpatrick model in the study of spin glass models and has been employed since then mainly in the context of extensively connected systems whereby each dynamical variable interacts weakly with the others. Recently, we extended this method for handling general intensively connected systems where each variable has only O(1) connections characterised by strong couplings. However, the new formulation looks quite different with respect to existing analyses and it is only natural to question whether it actually reproduces known results for systems of extensive connectivity. In this chapter, we apply our formulation of the TAP approach to an extensively connected system, the Hopfield associative memory model, showing that it produces identical results to those obtained by the conventional formulation.

A novel tunable all-optical incoherent negative-tap fiber-optic transversal filter based on a DFB laser diode and fiber Bragg grating

We demonstrate experimentally a novel and simple tunable all-optical incoherent negative-tap fiber-optic transversal filter based on a distribution feedback laser diode and high reflection fiber Bragg gratings (FBGs). In this filter, variable time delay is provided by cascaded high reflection fiber Bragg gratings (FBGs), and the tuning of the filter is realized by tuning different FBG to match the fixed carrier wavelength, or adjusting the carrier wavelength to fit different FBG. The incoherent negative tapping is realized by using the carrier depletion effect in a distribution feedback laser diode.

Class I T-cell epitope prediction:improvements using a combination of proteasome cleavage, TAP affinity, and MHC binding

Cleavage by the proteasome is responsible for generating the C terminus of T-cell epitopes. Modeling the process of proteasome cleavage as part of a multi-step algorithm for T-cell epitope prediction will reduce the number of non-binders and increase the overall accuracy of the predictive algorithm. Quantitative matrix-based models for prediction of the proteasome cleavage sites in a protein were developed using a training set of 489 naturally processed T-cell epitopes (nonamer peptides) associated with HLA-A and HLA-B molecules. The models were validated using an external test set of 227 T-cell epitopes. The performance of the models was good, identifying 76% of the C-termini correctly. The best model of proteasome cleavage was incorporated as the first step in a three-step algorithm for T-cell epitope prediction, where subsequent steps predicted TAP affinity and MHC binding using previously derived models.

La référence temporelle au futur dans les bulletins météo en France et au Québec:regard variationniste sur l’oral préparé

The distribution of variants used to express future temporal reference has been the object of many studies, focused on conversational speech or on written data. This article sheds new light on the issue by studying future markers in a communicative setting which consists of prepared speech (the televised weather forecast) from a diatopic perspective (comparison of French and Québécois corpora). The distributional analysis points to a distribution of variants specific to this discursive setting. Furthermore, the Goldvarb X multivariate analysis reveals diatopic variation and the influence of some linguistic factors, most notably the type of verb, as well as the effect of constraints specific to the two speech communities under study.

Étude du polymorphisme des gènes TAP : TAP1 et TAP2, en relation avec la susceptibilité au VIH chez les africains

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

Étude du polymorphisme des gènes TAP : TAP1 et TAP2, en relation avec la susceptibilité au VIH chez les africains

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

Fukushima-derived radionuclides in sediments of the Japanese Pacific Ocean coast and various Japanese water samples (seawater, tap water, and coolant water of Fukushima Daiichi reactor unit 5)

We investigated Ocean sediments and seawater from inside the Fukushima exclusion zone and found radiocesium (134Cs and 137Cs) up to 800 Bq kg-1 as well as 90Sr up to 5.6 Bq kg-1. This is one of the first reports on radiostrontium in sea sediments from the Fukushima exclusion zone. Seawater exhibited contamination levels up to 5.3 Bq kg-1 radiocesium. Tap water from Tokyo from weeks after the accident exhibited detectable but harmless activities of radiocesium (well below the regulatory limit). Analysis of the Unit 5 reactor coolant (finding only 3H and even low 129I) leads to the conclusion that the purification techniques for reactor coolant employed at Fukushima Daiichi are very effective.

A percepção do consumidor do valor da marca : O caso TAP Portugal

Neste trabalho de investigação pretende-se responder à questão: qual a importância da percepção do consumidor do valor da marca TAP PORTUGAL? Para atingir os objectivos da investigação realizou-se um estudo de caso, tendo-se elaborado entrevistas junto de responsáveis pela área do marketing da companhia aérea nacional e procedeu-se à recolha de informação (publicações TAP, ANA¬ AEROPORTOS, entre outras; e, aplicou-se um questionário junto dos passageiros TAP. PORTUGAL no Aeroporto Internacional de Lisboa) de modo a se poder estudar o caso aprofundadamente. Os resultados da investigação indicam que a análise da nova imagem TAP PORTUGAL por parte dos passageiros é, de um modo geral, muito positiva, estando alinhados com os objectivos definidos no rebranding levado a cabo em 2005. A presente investigação contribui para sistematizar e clarificar as percepções dos consumidores do valor da marca TAP PORTUGAL, bem como retirar algumas ilações comparativas sobre os objectivos propostos e implementados na operação de rebranding com as percepções que os seus clientes têm desta nova imagem, contribuindo para uma melhor estratégia de gestão da marca. ABSTRACT; The present research seeks to answer the question: What is the importance of consumers' perception for the brand equity of TAP PORTUGAL? To achieve the objectives of the research a case study of methodology was done, having prepared interviews with the responsible for the marketing area of the Portuguese Airline, and proceeded to gather information (TAP, ANA-AEROPORTOS publications, among others; and, have applied a questionnaire to the TAP PORTUGAL passengers who made the check-in in the International Airport of Lisbon) to make a profound study of the case. Research results indicate that the new image analysis of TAP PORTUGAL from passengers, is generally very positive, and aligned with the objectives outlined in rebranding carried out in 2005. This research contributes to systematize and clarify the consumer's perceptions for the brand equity of TAP PORTUGAL, and draw some comparative conclusions on the objectives proposed and implemented in the rebranding operation with the customers’ perception that have the new image, contributing to improve the brand management strategy. NOTA: contém Cd em mau estado (Ilegível).

Recrutamento e selecção na Tap Portugal

Mestrado em Gestão de Recursos Humanos