A Review of the Physics and the Building Science which Underpins Methods of Low Energy Storage of Museum and Archive Collections*

ABSTRACT

The need to keep things cool for durability should be the single most powerful influence on storage design. The simplest temperature control is to moderate the outside temperature by a combination of thermal insulation and heat capacity. The low energy storage building is a lightweight, thermally insulated, airtight building put on top of an uninsulated floor slab laid directly on the ground. The thermal insulation is calculated to even out the daily temperature cycle but to allow an annual temperature cycle which is about half the amplitude, but much smoother, than the annual temperature cycle outside. The winter temperature inside will nearly always be above ambient and so will maintain a moderate RH without need for either humidification or dehumidification. The temperature inside in summer will be below ambient and thus will force dehumidification of the infiltrating air. However, the airtightness of the building allows intermittent dehumidification with low energy consumption, less than one kWh/m³ per year. There now exist enough buildings designed on this principle to reassure curators that highly valued collections can be stored in a space with a gentle temperature cycle and with an RH stability as good as air-conditioning usually achieves.     

Stronger disciplinary identities in multidisciplinary research schools

In this study, two multidisciplinary Social Sciences and Humanities research schools in Sweden have been investigated regarding disciplinary identity-making. This study investigates the meetings between different disciplines around a common thematic area of study for Ph.D. students. The Ph.D. students navigate through a complex social and organisational landscape with obligations and loyalties towards the discipline and the research school, which may be in conflict with each other. The main finding is that a multidisciplinary environment in fact creates strong disciplinary identities, partly in contrast to the purpose with the multidisciplinary research school. Encounters with Ph.D. students from other disciplines give the Ph.D. student something to relate to and to discuss e.g. with the supervisor. Another finding is that multidisciplinary research schools extend the perspectives of students. For some, new methods and theories from neighbouring disciplines were integrated and used, while for others the empirical scope of research was affected.     

Evaluating the Madrasa preschool programme in East Africa: a quasi‐experimental study

This study investigated the effect of preschool experience (two types of preschool: Madrasa and non‐Madrasa) on the cognitive development of children in East Africa. In the three countries studied (Kenya, Uganda, and Tanzania/Zanzibar) preschool education is burgeoning and government standards are being set. This quasi experimental evaluation used four subscales (block building, verbal comprehension, early number concept, picture similarities) adapted from the British Ability Scale II (BAS II; discussed by Elliot, Smith and McCulloch in 1996 Elliot, C.D., Smith, P. and McCulloch, K. 1996. British Ability Scale (BAS), Berkshire, , UK: NFER‐NELSON.  [Google Scholar]), and three (verbal meaning, exclusion, closure) from the African Child Intelligence Test (ACIT; discussed by Drenth and colleagues in 1980 Drenth, P.J.D., Van der Vlier, H., Muinde, N.P., Otaala, B., Omari, I.M. and Opolot, J.A. 1980. Jaribio akili mtoto Afrika. [African child intelligence test.] [in Kiswahili], Amsterdam: Free University of Amsterdam.  [Google Scholar]). The development of 423 children was studied at pre‐test (entry to preschool) and at post‐test 18 months later. Hierarchical regression showed that children with both types of preschool experience performed better than the home (comparison) group; however, children attending Madrasa Resource Centre preschools achieved significantly higher scores overall.     

The continuity of learning in a translanguaging science classroom

Cultural Studies of Science Education - This article aims to explore and clarify how students’ use of first and second languages in a translanguaging science classroom (TSC) may affect the...     

A Cognitive View of Reading Comprehension: Implications for Reading Difficulties

Our aim in the present paper is to discuss a “cognitive view” of reading comprehension, with particular attention to research findings that have the potential to improve our understanding of difficulties in reading comprehension. We provide an overview of how specific sources of difficulties in inference making, executive functions, and attention allocation influence reading comprehension processes and outcomes and may lead to reading comprehension problems. Finally, we discuss how the consideration of these potential sources of difficulty have practical implications for the design and selection of instructional materials.     

A new device for measuring ski running surface force and pressure profiles

The pressure/force acting between the running surface of a ski and the snow may indirectly change glide friction. Thus, measuring the pressure/force distribution may be important for a deeper understanding of glide in skiing. The present aim was to construct a device that allowed the pressure/force underneath the ski running surface (SRS) to be recorded. Pressure sensors were attached on top of a platform. Sheets of different materials were used to improve the interaction between the SRS and the sensors. Possible functions of the device are demonstrated in three applications that emphasized comparison of force distribution underneath skis selected for similarity, force distribution under both skis and a single ski as well as backward weight distribution. The results show that the device with the pressure sensors mapped pressure/force distribution underneath the skis in the applications presented, and the system can thus be a useful tool for further optimizing e.g., ski designs.     

Bewegungsberatung durch Experten aus der Sportwissenschaft. Eine Public Health Strategie zur Erhöhung körperlicher Aktivität bei speziellen Zielgruppen

Although sports clubs, associations and health insurance companies offer a wide range of exercise programs, several target groups, such as groups with low socioeconomic status struggle to overcome barriers for participation. The aim of this paper is to show the need for, as well as the prospects of structured physical activity counselling for specific target groups provided by exercise specialists. This successful approach to promote physical activity is described detailed in the group of long-term unemployed persons over 50 years in a job centre setting. A close cooperation with established local exercise programs is intended. Deficits and requirements of physical activity counselling in primary health care settings are adopted and transferred into the theory-based public health strategy. This approach has the potential to create a new field of work for exercise and health professionals in the field of primary prevention.     

Developing an approach for teaching and learning about Lewis structures

ABSTRACT

This study explores first-year university students’ reasoning as they learn to draw Lewis structures. We also present a theoretical account of the formal procedure commonly taught for drawing these structures. Students’ discussions during problem-solving activities were video recorded and detailed analyses of the discussions were made through the use of practical epistemology analysis (PEA). Our results show that the formal procedure was central for drawing Lewis structures, but its use varied depending on situational aspects. Commonly, the use of individual steps of the formal procedure was contingent on experiences of chemical structures, and other information such as the characteristics of the problem given. The analysis revealed a number of patterns in how students constructed, checked and modified the structure in relation to the formal procedure and the situational aspects. We suggest that explicitly teaching the formal procedure as a process of constructing, checking and modifying might be helpful for students learning to draw Lewis structures. By doing so, the students may learn to check the accuracy of the generated structure not only in relation to the octet rule and formal charge, but also to other experiences that are not explicitly included in the formal procedure.