Integrating multidisciplinary engineering knowledge

In order to design two distinct engineering qualification levels for an existing University of Technology programme, empirical evidence based on the current diploma is necessary to illuminate the nature of and the relationship between the contextual and conceptual elements underpinning a multidisciplinary engineering curriculum. The increasing focus on contextual application could result in decreasing opportunities to develop the conceptual disciplinary grasp required for a dynamic, emerging region at the forefront of technological innovation. Using the theoretical tools of Bernstein and Maton to analyse final year student practice, the research addresses the question of how multidisciplinary knowledge is integrated by students, and what this reveals about the nature of such knowledge. The paper presents a conceptualisation of multidisciplinary knowledge integration practices as a dynamic process along two axes simultaneously, shifting between different forms and levels of conceptual and contextual knowledge.     

A nano to macroscale study on structure-mechanics relationships of archaeological oak

Mechanical properties of wood at different length scales of its hierarchical structure are governed by structural and compositional properties on smaller length scales. This opens up the possibility to use microstructural data for estimating mechanical properties, which are difficult to assess by conventional, destructive testing but are nevertheless of high relevance for conservation practice. Herein, we investigate such microstructure-mechanics relationships for a particular example, namely the load bearing archaeological oak of the Oseberg Viking ship, displayed at the Viking Ship Museum in Oslo, Norway. In order to identify the effects of degradation on the mechanical behavior and their relations to the microstructure, recent oak specimens of different geographical origin (Norway and Austria) are investigated as well. Wood exhibits a cellular structure. Its cell walls are composed of an amorphous polymer matrix consisting of lignin and hemicelluloses and embedded, stiff cellulose fibers. At the cell level, experimental studies comprised microscopic investigations of the cellular structure, chemical analyses of the composition of the cell walls, as well as nanoindentation tests on single cell walls. The same samples were also analyzed on the macroscopic level, where additionally mass density and annual ring data were measured together with ultrasonic stiffnesses. The chemical data clearly indicate deterioration in the archaeological oak, affecting mainly hemicelluloses and amorphous cellulose. At the cell wall scale, however, this does not necessarily lead to a weaker material behavior. The nanoindentation modulus, as a measure of the cell wall stiffness, was found to even increase. This is counterintuitive to our understanding of the effects of chemical degradation. It might be due to possible modification of lignin in the Oseberg oak, and thus have a stronger effect on the indentation modulus than the concurrent weakening of the interfaces between the load-carrying cellulose fibers and the connecting cell wall matrix when analyzing wood at the microscopic level. A similar effect is also observed for the transversal stiffness of macroscopic samples, which increases. In tension-dominated loading modes, however, the degradation of the interfaces is the dominant effect, resulting for example in a considerable reduction of the macroscopic stiffness in longitudinal direction. This underlines the utmost relevance of the loading condition on the remaining load-carrying capacity of degraded wood. On the macroscale, effects of the geographical origin (i.e. growth conditions) on ring characteristics of the oak tissues override the effects of degradation on the mechanical behavior. They have to be carefully extracted in order to come up with conclusions on the effect of degradation from macroscopic test results. The identified microstructure-mechanics relationships provide the basis for–in further research steps–building mathematical models describing the relations between microstructural characteristics and macroscopic mechanical properties and, thereon, for structural analyses of historical wooden objects.     

Experimental and Numerical Analysis of a Novel Display Case Design: Case Study of the Renovated Anne Frank House

ABSTRACT

Many museums are housed in historic buildings, sometimes the building itself is part of the museum collection. Creating a stable environment by providing a nearly constant temperature and relative humidity at correct levels decreases the risk of object degradation. Maintaining this steady indoor environment, however, increases energy consumption and risks to the historic building. Museum display cases offer a solution to the mitigation of risks to which valuable objects may be subjected by providing an extra layer of protection to indoor climate fluctuations. The Anne Frank House is a historic house museum located in Amsterdam. The museum has undergone several renovations in the last years to deal with an increase in the number of visitors to over 1.2 million a year. The original diaries and other documents of Anne Frank are permanently on display in the Anne Frank House. With the recent refurbishment the possibility arose to design a new state-of-the-art display case. This study presents the results of the experimental research related to the design, performed in-situ. The temperature and relative humidity in the new exhibition space and inside the new display cases were monitored to gain insight into the hygrothermal behavior of these controlled environments. A complementary numerical study was performed to investigate effects of dynamic climate control of the exhibition gallery and climate conditions in the display case under various circumstances. Four main conclusions are presented in this paper. The investigated display case design is able to provide a stable relative humidity environment by means of silica gel, while using an active box-in-box climate control system to create stable temperature conditions. The inner case temperature depends on the temperature supplied by the display case air handling unit. Protocols must be in place in case of malfunction or failure of the climate control system of the display case. The air handling unit of the case needs to be shut off to create a passive environment for the objects on display until necessary actions are taken. Exhibition gallery set points can be less stringent when susceptible museum objects are on display in the display case. The environments are separated and provide an opportunity for energy saving set point strategies. The last conclusion drawn is that the numerical study provides valuable insight into imposing dynamic control of set points for temperature and relative humidity in the exhibition gallery and the effect on the display case environment.     

Publication Services at the University Library Graz: A New Venture,a New Role

ABSTRACT

Establishing Publication Services in the library at the University of Graz did more than broaden the service portfolio of the library. A convergence of expertise at the library, needs of researchers at the university, and ongoing changes in scholarly communication also contributed to the evolution of the library's role and profile. The new services offer first-level support for matters pertaining to scholarly publishing and communications. Furthermore, Publication Services has developed into a knowledge sharing platform, extending beyond the library to other administrative departments and creating a community of practice.     

Better safe than sorry? Risk and educational research

This paper presents the argument that education and the teaching profession have been saturated by a new form of risk consciousness and risk consideration. The aim is to shed light on this issue and present a number of empirical examples and questions of interest in educational research. Furthermore, the paper presents some of the central theories regarding risk and an attempt is made to relate these theories to an epistemological framework. The article also emphasizes the problems and issues that arise from the way teachers think, experience and manage risk in their daily work, and examines how this affects their didactic intentions and, in the long run, also the pupils’ learning potential. It is the intention of the authors, in the scientific as well as in the professional discussion, to reintroduce the positive connections between teaching and risk zones, as well as between professional development and risk taking.     

Fiatland: An Analogy between Mathematics and Physics

Before the 19th century the idea of more than three dimensions was exceptional. During the 19th century, however, geometry was revolutionized and new branches were developed. This revolution also created the idea of the possibility of a n-dimensional geometry or space; flatland, i.e. n = 2, was a consequence of this new thinking. In 1884 the clergyman Edwin Abbott and the mathematician Charles Hinton published their still-famous flatland stories. In the 20th century authors also included modern physics as well as computer science in flatland stories.     

Ethical competence – a comparison between the Swedish and the Icelandic curricula and some teachers’ views

The aim of this article is to highlight some conceptions of ethical competence identified in interviews with teachers in religious education in Sweden, and within analyses of policy documents in a Swedish and an Icelandic educational context. As a starting point we take seven interviewed teachers’ comments about what they view as important ethical competences for their pupils to have. A comparative analysis of Swedish and Icelandic policy documents with regard to the conceptual understandings of ethical competence is made, as well as a comparison between the policy documents and teachers’ comments. The Icelandic curriculum is chosen because it differs from the Swedish one in a sense relevant to an analysis of the teacher interviews. The analyses imply a tension between theoretical and analytical conceptions of ethical competence and an action competence. Finally, some possible threads to consider in developing a broadened and deepened understanding of ethical competence are outlined.     

Prediction of elementary mathematics grades by cognitive abilities

European Journal of Psychology of Education - In the present study, the relationship between the mathematics grade and the three basic cognitive abilities (inhibition, working memory, and...     

Die offene Ganztagsgrundschule in Nordrhein-Westfalen

Im Mittelpunkt des Beitrags stehen konzeptionelle Hintergründe der 2003/04 begonnenen offenen Ganztagsschule (OGS) in Nordrhein-Westfalen sowie erste Ergebnisse der wissenschaftlichen Begleitung, wie sie sich im Rahmen einer explorativen Erkundungsstudie zeigen. Hintergrund der konzeptionellen Debatte sind zwei Elemente: zum einen die vielschichtiger gewordene Debatte über Betreuungs-, Bildungs- und Erziehungskonzepte, zum anderen die st?rkere Kooperation zwischen der Schule und der Kinder- und Jugendhilfe im Rahmen der offenen Ganztagsschule. Die OGS in Nordrhein-Westfalen beansprucht durch die verst?rkte Einbeziehung au?erschulischer Partner zu einem neuen Verst?ndnis von Schule und Lernen beizutragen. Im Konzept und Modell dieser neuen Angebotsform begegnen sich somit die Vorstellungen beider Bereiche zur ad?quaten Gestaltung schulischer und au?erschulischer Lern- und Bildungsprozesse. Vor diesem Hintergrund werden erste Befunde und sich abzeichnende Trends der realen Entwicklung in diesem Land dargestellt.