Extremal dichotomy for uniformly hyperbolic systems

We consider the extreme value theory of a hyperbolic toral automorphism $T: \mathbb{T}^2 \to \mathbb{T}^2$ showing that if a H\"older observation $\phi$ which is a function of a Euclidean-type distance to a non-periodic point $\zeta$ is strictly maximized at $\zeta$ then the corresponding time series $\{\phi\circ T^i\}$ exhibits extreme value statistics corresponding to an iid sequence of random variables with the same distribution function as $\phi$ and with extremal index one. If however $\phi$ is strictly maximized at a periodic point $q$ then the corresponding time-series exhibits extreme value statistics corresponding to an iid sequence of random variables with the same distribution function as $\phi$ but with extremal index not equal to one. We give a formula for the extremal index (which depends upon the metric used and the period of $q$). These results imply that return times are Poisson to small balls centered at non-periodic points and compound Poisson for small balls centered at periodic points.Comment: 21 pages, 4 figure

Standards compliance as an alternative learning opportunity under globalization in Latin America

globalization, technological infrastructures, certification, capability, Latin America, Chile

The motivations, organisation and outcomes of university-industry interaction in the Netherlands

This paper aims at analysing the impact of institutional and organizational factors on bridging industrial and university motivations for collaboration, as well as on the content, management and outcome of this relationship, in the Netherlands. In particular, we explore which type of projects, set up under specific industrial and university motivations, are more likely to face institutional barriers related to technology, market and organisational incentives frameworks. Moreover, we analyse the impact of technology transfer offices, research sponsoring, part-time professorships, and patenting on aligning university and industry motivations towards collaboration. To proceed empirically, thirty in-depth cases of successful university-industry knowledge transfer are analysed.university-industry interaction, innovation cooperation

Numerical modelling of the time dependent behaviour of clays

In the last two decades extensive research has been undertaken to characterize the time and rate dependent response of soils and to describe it by means of a constitutive model. However, most of these constitutive equations have been dev.eloped for a single stress point and limited stress paths, and in engineering practice the time, dependent nature of soils is still commonly reduced to a single coefficient of secondary consolidation obtained from a 24h oedometer test. J This thesis describes the development and implementation, in the Imperial College Finite Element Program (I~FEP), of two elastic visco-plastic models based on the overstress theory to describe the stress-strain-time/rate behaviour of clayey soils. The models differ essentially in the adopted law to describe the variation of the creep ~ deformation with time. The fIrst model - Creep Model 1 - incorporates a linear logarithmic law to describe the variation ofthe creep defon:nation with time, while the second model- Equivalent Time (ET) Model - incorporates a non-linear logarithmic creep law, with a limit to the amount of volumetric creep strain that can occur. The implementation and performance of the models is validated through a series of simple fInite element analyses that mimic common l~boratory stress paths and show that the models are able to reproduce the' phenomena of primary and secondary compression, stress relaxation, primary and secondary creep and persistent rate effects on the stress-strain .response under Ko and triaxial stress conditions. The ET model is then used to investigate the increase in bearing capacity of preloaded footings on soft clay, taking into account both the effects of consolidation and soil hardening due to creep with time. Finally, a series of fInite element analyses are presented that mimic the loading tests performed on two instrumented rigid footings at the Bothkennar test site. These analyses highlight the importance of considering the soil viscous effects in engineering practice and the need to account for the soil creep non-linearity if good predictions of the long-term settlements of geotechnical structures are to be made.Imperial Users onl

Maxima of the Q-index: forbidden 4-cycle and 5-cycle

This paper gives tight upper bounds on the largest eigenvalue q(G) of the signless Laplacian of graphs with no 4-cycle and no 5-cycle. If n is odd, let F_{n} be the friendship graph of order n; if n is even, let F_{n} be F_{n-1} with an edge hanged to its center. It is shown that if G is a graph of order n, with no 4-cycle, then q(G)<q(F_{n}), unless G=F_{n}. Let S_{n,k} be the join of a complete graph of order k and an independent set of order n-k. It is shown that if G is a graph of order n, with no 5-cycle, then q(G)<q(S_{n,2}), unless G=S_{n,k}. It is shown that these results are significant in spectral extremal graph problems. Two conjectures are formulated for the maximum q(G) of graphs with forbidden cycles.Comment: 12 page

REPRESENTAÇÃO DOS DISCENTES NA GESTÃO DAS INSTITUIÇÕES DE ENSINO SUPERIOR NO CUMPRIMENTO DAS EXIGÊNCIAS DO ENSINO DA SOCIEDADE DO SÉCULO XXI

O objetivo geral é analisar a representação dos discentes na gestão das IES no cumprimento das exigências de ensino superior da sociedade do século XXI. Para a realização da pesquisa, de natureza quantitativa, foram utilizadas as tipologias descritiva, exploratória e estudo de caso. Foram analisados documentos e bibliografias para obter caracterização dos elementos de estratégia adequada à satisfação e aprendizagem e a ferramenta do Balanced Scorecard, como também na identificação das informações sobre estratégias de ensino e informações sobre as políticas da Faculdade Cearense (FAC), notadamente no Curso Bacharelado em Ciências Contábeis. O artigo apresenta o Ensino Superior, Estratégia, Capital Intelecutal, Balanced Scorecard e Gestão das Instituições de Ensino Superior. Conclui-se que a satisfação e aprendizagem sob a visão do aluno estão sendo atendidas de acordo com as exigências do mercado de trabalho e sociedade contemporânea para os discentes que almejam crescimento profissional conforme objeto de estudo. Como resultado percebe-se que a faculdade está preparada para suprir as exigências do mercado de trabalho. Observa-se que existe ligação entre a teoria e prática em sala de aula, conforme atestado pelos alunos. Portanto, enquanto cumprimento das exigências de ensino superior da sociedade do século XXI

INSERÇÃO DE PESSOAS COM DEFICIÊNCIA EM ORGANIZAÇÕES BRASILEIRAS: UM ESTUDO COM EMPRESAS SOCIALMENTE RESPONSÁVEIS

This research is under the Organizational Behavior Studies and it intended to investigate the relation between two basic aspects of management of diversity related to insertion of people with disabilities in organizationsconsidered social responsible: the way how the disability is seen by managers; and the suitability of the practices and work conditions. It was used quantitative methodology. A survey was carried out among 18 Brazilian enterprises. The results confirmed the theoretical purpose that several conceptions of disability existed and showed that enterprises have prioritized the changes at the work conditions more than the actions of sensitization and Human Resource practices which insure the insertion. Moreover, significant relations between conceptions of disability and suitability of the practices and work conditionswere examined, showing the importance of actions of Human Resource in the process of insertion

Incerteza confiança e risco: uma abordagem à questão do envelhecimento em Portugal

Estando presentes en la condición humana, el fin y el envejecimiento son, por efecto de las transformaciones ocurridas en la modernidad un problema que cuestiona las políticas públicas y la organización social. Característica del envejecimiento demográfico, en Portugal el grupo de personas mayores superó en la última década el grupo de jóvenes. Esta población es, en tiempos de crisis, doblemente víctima, por el aumento de las necesidades y por la reducción de los ingresos y las respuestas sociales. El texto considera para esta población, los sistemas abstractos, el cimentar la confianza y la seguridad que preserva las relaciones sociales y suspende incertidumbre.Being dimensions of the human condition, finitude and ageing are, as an effect of changes in modernity, particularly in family and in society, a problem that questions public policies and social organization. Feature of demographic ageing, in Portugal the Group of older people surpassed in the last decade the Group of youngsters. In times of crisis this population is doubly victimized, with an increase of needs and a reduction of income and social responses. The text considers, for this population the abstract systems the foundation of trust/safety that preserves social relations and suspends uncertainty.Sendo dimensões presentes na condição humana, a finitude e o envelhecimento são, por efeito das transformações ocorridas na modernidade um problema que questiona as políticas públicas e a organização social. Característica do envelhecimento demográfico, em Portugal o grupo das pessoas mais velhas ultrapassou na última década o grupo dos mais jovens. Esta população é, em tempo de crise, duplamente vitimizada, pelo aumento de necessidades e pela diminuição dos rendimentos e respostas sociais. O texto considera para esta população, os sistemas abstractos, o alicerce da confiança/segurança que preserva as relações sociais e suspende a incerteza