Technological choice under environmentalists’ participation in Emissions Trading Systems

We model competition in an emissions trading system (ETS) as a game between two firms and environmental group. In a previous stage, firms endogenously choose their manufacturing technologies. Our results show that there is an inverted U-shape relationship between how polluting the chosen technology is and the degree of the environmentalists' impure altruism. Firms choose a less polluting technology in the presence of the environmentalists than in their absence only if they are characterised by intermediate degrees of impure altruism.ETS; Technology Choice; Induced Technological Change; Impure Altruism

Designing a food-as-a-service business: MK

Este projeto de mestrado tem como objetivo o desenvolvimento de um plano de negócios inovador que permitirá a criação de uma nova empresa, com o nome MK. A industria da restauração, como muitas outras, tem vindo a beneficiar da transformação digital que está a transformar a forma como as empresas entregam valor e a forma como os consumidores se relacionam com as marcas e os seus produtos. Com exposição profissional à constante transformação tecnológica e digital, decidimos analisar e projetar um plano que transforma a forma como os consumidores tratam a sua rotina diária e consomem as suas refeições. Combinando experiência, qualidade e sentido de oportunidade a MK consegue, de forma inovadora, ir ao encontro das expectativas dos jovens adultos residentes na grande Lisboa, uma geração que se distingue pelas suas exigência, hábitos de consumo e adaptabilidade digital. Com recurso ao conhecimento adquirido ao longo do mestrado em gestão de empresas, procurei aplicar conceitos chave e metodologias de referência de forma a analisar o mercado português e concorrentes existentes, que, combinado com a validação de mercado serviu o desenho de um plano de marketing capaz de suportar a criação deste novo negócio.This master's project aims to develop an innovative business plan that will allow the creation of a new company, named MK. The catering industry, like many others, has been benefiting from the digital transformation that is transforming the way companies deliver value and the way consumers relate to brands and their products. With professional exposure to the constant technological and digital transformation, we decided to analyze and design a plan that transforms the way consumers treat their daily routine and consume their meals. By combining experience, quality and a sense of opportunity, MK is able to innovatively meet the expectations of young adults living in Greater Lisbon, a generation that is distinguished by its demands, consumption habits and digital adaptability. Using the knowledge gained during my Master´s in Business Administration, we sought to apply key concepts and reference methodologies in order to analyze the Portuguese market and existing competitors, which, combined with market validation, served to design a marketing plan capable of to support the creation of this new business

Fidedignidade, um enfoque estatístico

Reliability is defined as error of measurement. Reliability theory is described and a model is proposed that divides the total variance in two parts: the variance due to error and the real variance.The method of Split-half is described and to determine the reliability of the instrument “Deslizador Manual” used for time control in the area of Physical Education.Define-se por fidedignidade em termos de erro de mensuração. Descreve-se a teoria da fidedignidade, delineando-se o modelo de segregação da variância total em variância verdadeira e variância do erro (S20 = S2v + S2e).Descreve-se o método das duas metades (Spearman-Brown), aplicado para determinar a fidedignidade do instrumento Deslizador Manual utilizado para o controle temporal na área de Educação Física.

Gibbs–Wilbraham phenomenon on Lagrange interpolation based on analytic weights on the unit circle

This paper is devoted to study Lagrange interpolation based on nodal systems constituted by the roots of para-orthogonal polynomials with respect to analytic weights on the unit circle. The presented results address, in addition to algorithmic and convergence questions for continuous and discontinuous functions, a detailed study of the Gibbs-Wilbraham phenomenon.Ministerio de Economía y Competitividad | Ref. AGL2014-60412-

Gibbs–Wilbraham oscillation related to an Hermite interpolation problem on the unit circle

The aim of this piece of work is to study some topics related to an Hermite interpolation problem on the unit circle. We consider as nodal points the zeros of the para-orthogonal polynomials with respect to a measure in the Baxter class and such that the sequence of the first derivative of the reciprocal of the orthogonal polynomials is uniformly bounded on the unit circle. We study the convergence of the Hermite–Fejér interpolants related to piecewise continuous functions and we describe the sets in which the interpolants uniformly converge to the piecewise continuous function as well as the oscillatory behavior of the interpolants near the discontinuities, where a Gibbs–Wilbraham phenomenon appears. Finally we present some numerical experiments applying the main results and by considering nodal systems of interest in the theory of orthogonal polynomials.Ministerio de Economía y Competitividad | Ref. AGL 2014-60412-

Atividades práticas no ensino de Biologia: um estudo sobre a percepção de professores em um município de Rondônia / Practical activities in teaching Biological: a study on the perception of teachers in a municipality of Rondônia

O uso de atividades práticas apresenta-se como uma importante estratégia pedagógica no ensino de ciências da natureza, pois possibilita aos alunos desenvolverem uma construção do conhecimento. Assim, o presente estudo teve por objetivo analisar como professores de Ciências e Biologia percebem as atividades práticas e sua importância no contexto de ensino e aprendizagem, se os mesmos utilizam em suas aulas e quais as contribuições alcançadas na aprendizagem dos estudantes. A pesquisa caractere-se como exploratória, de análise quanti-qualitativa, tendo como instrumento de coleta de dados o questionário semiestruturado com perguntas objetivas e subjetivas, aplicado a cinco docentes de Ciências Biológicas em três escolas estaduais e uma rede privada de ensino em um município ao Sul de Rondônia. Com base nos resultados, constatou-se características adversas do escolar, tais como: a falta de espaço de recursos, redução de tempo para planejamento e a falta e ou, inadequação de ambientes para a realização de aulas práticas. Entretanto, quando utilizado, as atividades práticas são percebidas pelos profissionais, como ferramentas eficientes e aprendizagem à aprendizagem

Magnetobiochronology of Lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area

The Gibraltar Arc is a complex tectonic region, and several competing models have been proposed to explain its evolution. We studied the sedimentary fill of the Guadalquivir Basin to identify tectonic processes that were occurring when the reopening of the Strait of Gibraltar led to the reestablishment of Mediterranean outflow. We present a chronostratigraphic framework for the Lower Pliocene sediments from the lower Guadalquivir Basin (SW Spain). The updated chronology is based on magnetobiostratigraphic data from several boreholes. Our results show that the studied interval in the La Matilla core is in the early Pliocene section, providing better constraints on the sedimentary evolution of the basin during that period. Migrating depositional facies led to a younger onset of sandy deposition basinward. At the northwestern passive margin, a 0.7 m.y. period of sedimentary bypass related to a sharp decrease in sedimentation rates and lower sea levels resulted from the tectonic uplift of the forebulge. In contrast, high sedimentation rates with continuous deep-marine sedimentation are recorded at the basin center due to continuous tectonic subsidence and west-southwestward progradation of axial depositional systems. The marginal forebulge uplift, continuous tectonic basinal subsidence, and southward progradation of clinoforms in the early Pliocene can be explained by the pull of a lithospheric slab beneath the Gibraltar Arc as the Strait of Gibraltar opened. These findings are, to our knowledge, the first reported sedimentary expression of slab pull beneath the Betics related to the opening of the Strait of Gibraltar after the Messinian salinity crisis.Peer ReviewedPostprint (author's final draft

Swimming performance of Bradyrhizobium diazoefficiens is an emergent property of its two flagellar systems

Many bacterial species use flagella for self-propulsion in aqueous media. In the soil, which is a complex and structured environment, water is found in microscopic channels where viscosity and water potential depend on the composition of the soil solution and the degree of soil water saturation. Therefore, the motility of soil bacteria might have special requirements. An important soil bacterial genus is Bradyrhizobium, with species that possess one flagellar system and others with two different flagellar systems. Among the latter is B. diazoefficiens, which may express its subpolar and lateral flagella simultaneously in liquid medium, although its swimming behaviour was not described yet. These two flagellar systems were observed here as functionally integrated in a swimming performance that emerged as an epistatic interaction between those appendages. In addition, each flagellum seemed engaged in a particular task that might be required for swimming oriented toward chemoattractants near the soil inner surfaces at viscosities that may occur after the loss of soil gravitational water. Because the possession of two flagellar systems is not general in Bradyrhizobium or in related genera that coexist in the same environment, there may be an adaptive tradeoff between energetic costs and ecological benefits among these different species.Fil: Quelas, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Althabegoiti, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Jiménez Sánchez, Celia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; Argentina. Instituto de Recursos Naturales y Agrobiología de Sevilla; EspañaFil: Melgarejo, Augusto. Universidad Nacional de La Plata. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Marconi, Veronica Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Mongiardini, Elias Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Trejo, Sebastian Alejandro. Universitat Autònoma de Barcelona; España. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mengucci, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Ortega Calvo, José Julio. Instituto de Recursos Naturales y Agrobiología de Sevilla; EspañaFil: Lodeiro, Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; Argentin

Impact of salt reduction on biogenic amines, fatty acids, microbiota, texure and sensory profile in traditional blood dry-cured sausages

Meat industry needs to reduce salt in their products due to healthy issues. The present study evaluated the effect of salt reduction from 6% to 3% in two Portuguese traditional blood dry-cured sausages. Physico-chemical and microbiological parameters, biogenic amines, fatty acids and texture profiles and sensory panel evaluations were considered. Differences to salt reduction were preceptible in a faint decline of water activity, which slightly favoured microbial growth. Total biogenic amines content ranged from 88.86 to 796.68 mg Kg-1 fresh matter, with higher amount, particularly of cadaverine, histamine and tyramine, in low-salt products. Still, histamine anda other vasoactive amines remained at low levels, thus not affecting consumers' health. Regarding fatty acids, no significant differences were observed due to salt. However, texture profile analysis revealed lower resilience and cohesiveness in low-salt products, although no textural changes were observed by the sensory panel. Nevertheless, low-salt sausages were clearly preferred by panellists