Alberto Vélez Escobar, lo mejor no es lo mejor de lo ideal sino lo mejor de lo posible

Fondo Margaritainés Restrepo

Energy norm a-posteriori error estimation for hp-adaptive discontinuous Galerkin methods for elliptic problems in three dimensions

We develop the energy norm a-posteriori error estimation for hp-version discontinuous Galerkin (DG) discretizations of elliptic boundary-value problems on 1-irregularly, isotropically refined affine hexahedral meshes in three dimensions. We derive a reliable and efficient indicator for the errors measured in terms of the natural energy norm. The ratio of the efficiency and reliability constants is independent of the local mesh sizes and weakly depending on the polynomial degrees. In our analysis we make use of an hp-version averaging operator in three dimensions, which we explicitly construct and analyze. We use our error indicator in an hp-adaptive refinement algorithm and illustrate its practical performance in a series of numerical examples. Our numerical results indicate that exponential rates of convergence are achieved for problems with smooth solutions, as well as for problems with isotropic corner singularities.

Comunicação educacional : a mediateca ideal

Formação - Professores

Una casa ideal : vivienda de chocolate

Fondo Margaritainés Restrepo

"¡Andá a hilar la lana!" : La construcción del ideal femenino en los fragmentos 618-9 y 681 M de Lucilio a la luz de los intertextos

En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho

"¡Andá a hilar la lana!" : La construcción del ideal femenino en los fragmentos 618-9 y 681 M de Lucilio a la luz de los intertextos

En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho

How do customers of a financial services institution judge its communications

Communications are important for relationships within a marketing channel from both a theoretical and managerial perspective. Yet it is a problematic area for scholars. Thus, this research addresses the problem of how do customers of a financial services institution perceive communications with an ideal institution? This study's case research methodology used in-depth interviews with 34 carefully selected customers of a building society. The factors that make up customers' attitudes about corporate communications for an ideal financial services institution were identified and actual perceptions were compared against that ideal. The findings confirmed the importance of communications for customers in a relationship with a financial services provider and suggested communication priorities for customers in this context. In addition, the findings suggested sources of communication dissatisfaction for customers. These findings build upon the literature that speculates about customer perceptions of communications with organizations but provides little evidence to support hypotheses. The contributions arose from the emphasis on the customers' own attitudes and the patterns found within them.

Employability and job status as moderators of the effects of job insecurity on work outcomes

Despite greater use of temporary employment contracts, little is known about how employees react to job length uncertainty. Individual careers within the safety of one or two primary organisations are no longer the norm. This study investigates the effects of job insecurity and employment status (temporary/permanent) on work outcomes. Three hundred and ninety-one employees (122 temporary and 269 permanent) in low to medium level non-academic positions from two Australian universities completed a survey. The results show that a belief that comparable employment is easily available did not alleviate the negative effects of job insecurity. Work attitudes for temporaries and permanents though were differentially influenced by employee perceptions of their own employability.

Engaging Students in the Implementation of Criterion Referenced Assessment in First Year Law

The Queensland University of Technology (QUT) University Academic Board approved a new QUT Assessment Policy in September 2003, which requires a criterion-referenced approach as opposed to a norm-referenced approach to assessment across the university(QUT,MOPP,2003). In 2004, the QUT Law School embarked upon a process of awareness raising about criterion-referenced assessment amongst staff and from 2004 – 2005 staggered the implementation of criterion-referenced assessment in all first year core undergraduate law units. This paper will briefly discuss the benefits and potential pitfalls of criterion referenced assessment and the context for implementing it in the first year law program, report on student’s feedback on the introduction of criterion referenced assessment and the strategies adopted in 2005 to engage students more fully in criterion referenced assessment processes to enhance their learning outcomes.

Increasing the rigour and trustworthiness of participatory evaluations : learnings from the field

Participatory evaluation and participatory action research (PAR) are increasingly used in community-based programs and initiatives and there is a growing acknowledgement of their value. These methodologies focus more on knowledge generated and constructed through lived experience than through social science (Vanderplaat 1995). The scientific ideal of objectivity is usually rejected in favour of a holistic approach that acknowledges and takes into account the diverse perspectives, values and interpretations of participants and evaluation professionals. However, evaluation rigour need not be lost in this approach. Increasing the rigour and trustworthiness of participatory evaluations and PAR increases the likelihood that results are seen as credible and are used to continually improve programs and policies.----- Drawing on learnings and critical reflections about the use of feminist and participatory forms of evaluation and PAR over a 10-year period, significant sources of rigour identified include:----- • participation and communication methods that develop relations of mutual trust and open communication----- • using multiple theories and methodologies, multiple sources of data, and multiple methods of data collection----- • ongoing meta-evaluation and critical reflection----- • critically assessing the intended and unintended impacts of evaluations, using relevant theoretical models----- • using rigorous data analysis and reporting processes----- • participant reviews of evaluation case studies, impact assessments and reports.

Universally composable contributory group key exchange

We treat the security of group key exchange (GKE) in the universal composability (UC) framework. Analyzing GKE protocols in the UC framework naturally addresses attacks by malicious insiders. We define an ideal functionality for GKE that captures contributiveness in addition to other desired security goals. We show that an efficient two-round protocol securely realizes the proposed functionality in the random oracle model. As a result, we obtain the most efficient UC-secure contributory GKE protocol known.

Research Monograph : Sustainable Australia : Containing travel in master planned estates

Low density suburban development and excessive use of automobiles are associated with serious urban and environmental problems. These problems include traffic congestion, longer commuting times, high automobile dependency, air and water pollution, and increased depletion of natural resources. Master planned development suggests itself as a possible palliative for the ills of low density and high travel. The following study examines the patterns and dynamics of movement in a selection of master planned estates in Australia. The study develops new approaches for assessing the containment of travel within planned development. Its key aim is to clarify and map the relationships between trip generation and urban form and structure. The initial conceptual framework of the report is developed in a review of literature related to urban form and travel behaviour. These concepts are tested empirically in a pilot study of suburban travel activity in master planned estates. A geographical information systems (GIS) methodology is used to determine regional journey-to-work patterns and travel containment rates. Factors that influence self-containment patterns are estimated with a regression model. The key research findings of the pilot study are: - There is a strong relation between urban structural form and patterns of trip generation; - The travel self-containment of Australian master planned estates is lower than the scholarly literature implies would occur if appropriate planning principles to achieve sustainable urban travel were followed; - Proximity to the central business district, income level and education status are positively correlated with travel containment; - Master planned estates depend more on local and regional centres for employment than on the central business district; - The service sector is the major employer in and around master planned estates. It tends to provide part-time and casual employment rather than full-time employment; - Travel self-containment is negative correlated with car dependency. Master planned estates with less car dependent residents, and with good access to public transport, appear to be more self-contained and, consequently, more sustainable than the norm. This research is a useful preliminary examination of travel self-containment in Australian master planned estates. It by no means exhausts the subject. In future research we hope to further assess sustainable travel patterns with more detailed spatial analysis.