Exact Numerical Processing

Paper submitted to Euromicro Symposium on Digital Systems Design (DSD), Belek-Antalya, Turkey, 2003.

Promover a parentalidade : recomendações perante as birras e momentos de alimentação da criança

Enquadramento: A parentalidade é um tema de saúde com muita relevância na sociedade atual, intervindo o seu exercício na promoção da saúde e bem-estar da criança. A parentalidade envolve acontecimentos stressantes, nomeadamente em situações de problemas de saúde e necessidades básicas e de resposta ao comportamento da criança, como é o caso do choro/birra e no momento de alimentação, procurando a maioria dos cuidadores responder ao problema de forma independente enquanto outros solicitam apoio dos profissionais de saúde. Objetivo: Identificar recomendações concretas, baseadas na evidência científica, de boas práticas e recomendações a transmitir aos pais para lidarem com o choro /birras e no momento da alimentação da criança. Métodos: Realizou-se uma revisão sistemática da literatura de estudos realizados nos idiomas português, inglês e espanhol, publicados entre 2009 e 2014, em bases de dados internacionais CINAHL® Plus with Full-Text, Nursing & Allied Health Collection, Cochrane Central Register of Controlled Trials; Cochrane Database of Systematic Reviews (CDSR) e Database of Abstracts of Reviews of Effects (DARE), MedicLatina , MEDLINE, com recurso a diversos descritores e operadores booleanos e recorrendo a dois revisores que avaliaram a qualidade dos estudos metodológicos. Resultados: Após avaliação crítica, foram excluídos 50 estudos e incluídos 7, sendo um de grau de evidência A, dois de evidência B e 4 de evidência D. Os outcomes evidenciaram que para gestão da parentalidade o aconselhamento deve feito pelo profissional de referência, que se necessário deverá acompanhar os pais através de contacto telefónico e visita domiciliária sobretudo se mães inexperientes. Os profissionais devem ampliar os seus conhecimentos sobre as dúvidas e preocupações que os pais têm sobre a educação dos seus filhos consultando os espaços de discussão online. A etnia e nacionalidade das mães tem forte impacto sobre os métodos usados para acalmar o bebé, pelo que os cuidados devem ser culturalmente congruentes. Na abordagem do choro/ birras torna-se necessário conhecer o normal desenvolvimento da criança e em que contextos surgem para minimizá-las, sendo importante que os pais dêem à criança atenção positiva, instituindo rotinas. Para melhorar o momento da alimentação os pais devem reconhecer que até aos dois anos decorre a janela de oportunidade de aprendizagem de rotinas e de novos sabores, salientando-se a importância do ambiente de atenção e reciprocidade durante as refeições. Conclusão: Os enfermeiros devem procurar orientar a sua prática com base nas evidências científicas e tendo como base o estudo efectuado, salienta-se a promoção da parentalidade positiva como central para a abordagem dos comportamentos de choro/birra e no momento da alimentação da criança. Palavras – chaves: educação parental, enfermeiro, aleitamento materno, alimentação, birra, choro, relação pais-filhos.

Modeling collisional processes in plasmas using discontinuous numerical methods

Thesis (Ph.D.)--University of Washington, 2016-06

An interview-based cognitive analysis of stakeholder perceptions of whale watching in Puget Sound, Washington

Thesis (Master's)--University of Washington, 2016-06

Effects of harvesting callianassid (ghost) shrimps on subtropical benthic communities

The effects of harvesting of callianassid shrimp (Trypaea australiensis) on the abundance and composition of macrobenthic assemblages in unvegetated sediments of a subtropical coastal embayment in Queensland, Australia were examined using a combination of sampling and manipulative experiments. First, the abundance and composition of the benthic infauna in an area regularly used for the collection of shrimp for bait by recreational anglers was compared with multiple reference areas. Second, a BACI design, with multiple reference areas, was used to examine the short-term effects of harvesting on the benthic assemblages from an intensive commercialised fishing competition. Third, a large-scale, controlled manipulative experiment, where shrimp were harvested from 10,000 m(2) plots at intensities commensurate with those from recreational and commercial operators, was done to determine the impacts on different components of the infaunal assemblage. Only a few benthic taxa showed significant declines in abundance in response to the removal of ghost shrimp from the unvegetated sediments. There was evidence, however, of more subtle effects with changes in the degree of spatial variation (patchiness) of several taxa as a result of harvesting.. Groups such as capitellid polychaetes, gammarid amphipods and some bivalves were significantly more patchy in their distribution in areas subjected to harvesting than reference areas, at a scale of tens of metres. This scale corresponds to the patterns of movement and activity of recreational harvesters working in these areas. In contrast, patchiness in the abundance of ghost shrimp decreased significantly under harvesting at scales of hundreds of metres, in response to harvesters focussing their efforts on areas with greater numbers of burrow entrances, leading to a more even distribution of the animals. Controlled experimental harvesting caused declines in the abundance of soldier crabs (Mictyris longicarpus), polychaetes and amphipods and an increase in the spatial patchiness of polychaetes. Populations of ghost shrimp were, however, resilient to harvesting over extended periods of time. In conclusion, harvesting of ghost shrimp for bait by recreational and commercial fishers causes significant but localised impacts on a limited range of benthic fauna in unvegetated sediments, including changes in the degree of spatial patchiness in their distribution. (c) 2005 Elsevier B.V. All rights reserved.

Programs as paths: An approach to timing constraint analysis

A program can be decomposed into a set of possible execution paths. These can be described in terms of primitives such as assignments, assumptions and coercions, and composition operators such as sequential composition and nondeterministic choice as well as finitely or infinitely iterated sequential composition. Some of these paths cannot possibly be followed (they are dead or infeasible), and they may or may not terminate. Decomposing programs into paths provides a foundation for analyzing properties of programs. Our motivation is timing constraint analysis of real-time programs, but the same techniques can be applied in other areas such as program testing. In general the set of execution paths for a program is infinite. For timing analysis we would like to decompose a program into a finite set of subpaths that covers all possible execution paths, in the sense that we only have to analyze the subpaths in order to determine suitable timing constraints that cover all execution paths.

O CINEMA COMO RECURSO DIDÁTICO-PEDAGÓGICO NO ENSINO JURÍDICO: QUEBRANDO PARADIGMAS

O presente estudo teve como seu objetivo geral investigar o modelo didático-pedagógico que vem sendo utilizado no ensino jurídico brasileiro, ressaltando a necessidade da busca pela formação integral do futuro operador do Direito, conforme preceitua a Resolução CNE/CES n°09/04. De modo especial, procurou investigar como a utilização do cinema pode ser compreendida como recurso para possibilitar a interação das disciplinas da área jurídica com a de outras áreas do conhecimento, incluindo arte e estética na formação do discente de Direito, visando uma maior eficácia do exercício operacional da inteligência, ampliação de visão de mundo e exercício do pensamento crítico. Os caminhos percorridos nesta pesquisa incluíram um estudo teórico sobre o histórico e os problemas do ensino jurídico no Brasil, discutindo-se as características pedagógicas dos cursos de Direito, bem como as inovações trazidas pelo MEC no que tange à adequação dos currículos e da pedagogia para alcançar o ensino humanístico, de acordo com a realidade dinâmica da sociedade globalizada. Nesta esteira, a pesquisa visou problematizar como o cinema, considerando-o como veículo instrucional, pode ser utilizado como metodologia inter e transdisciplinar nos cursos de Direito. Elaborou-se, também, uma investigação de campo que pretendeu, por meio de questionário estruturado, obter as opiniões de alunos sobre uma experiência de docência na disciplina de Direito Internacional Público onde se utiliza, de forma regular, trechos de produções cinematográficas como elementos contextualizadores de saberes na área lecionada. A pesquisa evidenciou que são poucos os professores de direito que se utilizam do cinema em suas aulas, embora todos os alunos pesquisados entendam ser esta uma prática extremamente válida e dialógica, que os leva à ampliação de conhecimento de mundo e ao pensamento crítico.

A stakeholder perspective on buyer-supplier conflict

This study seeks to investigate how stakeholder power and an organization's pursuit of legitimacy influence its reaction to conflict with a supplier. We conducted an empirical study among travel agents and tour operators to test the relationship between conflict and stakeholder power and legitimacy derived from three different stakeholders. Our findings imply that power has a dual role. Whereas supplier power reduces buyer–supplier conflict, stakeholder power increases it. Moreover, this study shows that the quest to achieve greater legitimacy from the firm's competitive arena increases conflict. This study is one of the few that test stakeholder theory empirically. We demonstrate that stakeholder theory provides additional explanations above the hitherto taken dyadic approach toward understanding conflict. This study also shows that power can simultaneously reduce and increase conflict depending on which party possesses power. Greater supplier power decreases conflict, while greater stakeholder power and stakeholder-derived legitimacy increases it. Therefore, organizations have to balance their stakeholder and supplier interests.

Analysis of computer communication systems by use of digital signal processing methods

Queueing theory is an effective tool in the analysis of canputer camrunication systems. Many results in queueing analysis have teen derived in the form of Laplace and z-transform expressions. Accurate inversion of these transforms is very important in the study of computer systems, but the inversion is very often difficult. In this thesis, methods for solving some of these queueing problems, by use of digital signal processing techniques, are presented. The z-transform of the queue length distribution for the Mj GY jl system is derived. Two numerical methods for the inversion of the transfom, together with the standard numerical technique for solving transforms with multiple queue-state dependence, are presented. Bilinear and Poisson transform sequences are presented as useful ways of representing continuous-time functions in numerical computations.

Applications of differential geometry to high spin field theories

The main aim of this thesis is to investigate the application of methods of differential geometry to the constraint analysis of relativistic high spin field theories. As a starting point the coordinate dependent descriptions of the Lagrangian and Dirac-Bergmann constraint algorithms are reviewed for general second order systems. These two algorithms are then respectively employed to analyse the constraint structure of the massive spin-1 Proca field from the Lagrangian and Hamiltonian viewpoints. As an example of a coupled field theoretic system the constraint analysis of the massive Rarita-Schwinger spin-3/2 field coupled to an external electromagnetic field is then reviewed in terms of the coordinate dependent Dirac-Bergmann algorithm for first order systems. The standard Velo-Zwanziger and Johnson-Sudarshan inconsistencies that this coupled system seemingly suffers from are then discussed in light of this full constraint analysis and it is found that both these pathologies degenerate to a field-induced loss of degrees of freedom. A description of the geometrical version of the Dirac-Bergmann algorithm developed by Gotay, Nester and Hinds begins the geometrical examination of high spin field theories. This geometric constraint algorithm is then applied to the free Proca field and to two Proca field couplings; the first of which is the minimal coupling to an external electromagnetic field whilst the second is the coupling to an external symmetric tensor field. The onset of acausality in this latter coupled case is then considered in relation to the geometric constraint algorithm.

Ethnic differences in health related quality of life for patients with type 2 diabetes

Background - The objective of this study was to investigate the association between ethnicity and health related quality of life (HRQoL) in patients with type 2 diabetes. Methods - The EuroQol EQ-5D measure was administered to 1,978 patients with type 2 diabetes in the UK Asian Diabetes Study (UKADS): 1,486 of south Asian origin (Indian, Pakistani, Bangladeshi or other south Asian) and 492 of white European origin. Multivariate regression using ordinary least square (OLS), Tobit, fractional logit and Censored Least Absolutes Deviations estimators was used to estimate the impact of ethnicity on both visual analogue scale (VAS) and utility scores for the EuroQol EQ-5D. Results - Mean EQ-5D VAS and utility scores were lower among south Asians with diabetes compared to the white European population; the unadjusted effect on the mean EQ-5D VAS score was −7.82 (Standard error [SE] = 1.06, p < 0.01) and on the EQ-5D utility score was −0.06 (SE = 0.02, p < 0.01) (OLS estimator). After controlling for socio-demographic and clinical confounders, the adjusted effect on the EQ-5D VAS score was −9.35 (SE = 2.46, p < 0.01) and on the EQ-5D utility score was 0.06 (SE = 0.04), although the latter was not statistically significant. Conclusions - There was a large and statistically significant association between south Asian ethnicity and lower EQ-5D VAS scores. In contrast, there was no significant difference in EQ-5D utility scores between the south Asian and white European sub-groups. Further research is needed to explain the differences in effects on subjective EQ-5D VAS scores and population-weighted EQ-5D utility scores in this context.

On a Class of Generalized Elliptic-type Integrals

The aim of this paper is to study a generalized form of elliptic-type integrals which unify and extend various families of elliptic-type integrals studied recently by several authors. In a recent communication [1] we have obtained recurrence relations and asymptotic formula for this generalized elliptic-type integral. Here we shall obtain some more results which are single and multiple integral formulae, differentiation formula, fractional integral and approximations for this class of generalized elliptic-type integrals.

On some Mixture Distributions

The aim of this paper is to establish some mixture distributions that arise in stochastic processes. Some basic functions associated with the probability mass function of the mixture distributions, such as k-th moments, characteristic function and factorial moments are computed. Further we obtain a three-term recurrence relation for each established mixture distribution.

Cauchy Problem for Differential Equation with Caputo Derivative

The paper is devoted to the study of the Cauchy problem for a nonlinear differential equation of complex order with the Caputo fractional derivative. The equivalence of this problem and a nonlinear Volterra integral equation in the space of continuously differentiable functions is established. On the basis of this result, the existence and uniqueness of the solution of the considered Cauchy problem is proved. The approximate-iterative method by Dzjadyk is used to obtain the approximate solution of this problem. Two numerical examples are given.