Quantification of wall surface heterogeneity and its influence on species diversity at medieval castles – implications for the environmentally friendly preservation of cultural heritage

Historic buildings are important for cultural history and provide a variety of habitats for animals and plants. Especially structural heterogeneity of wall surfaces is perceived to support biological diversity. Nevertheless, in traditional approaches goals of biodiversity preservation and monument restoration are perceived to interfere and to be mutually exclusive. As a consequence, priority is often given to constructional restoration accepting the loss of local populations and biodiversity. At walls of medieval castles, including an experimental restoration project where conventional and less intensive restoration techniques were applied, we relate species composition and richness to wall properties. Especially wall surface structure is quantified using a novel approach. The study focuses on lichens, mosses and vascular plants. Boosted regression tree analyses and non-metric multidimensional scaling techniques are applied to detect the influence of abiotic site conditions on biodiversity. We find species richness to be promoted by wall surface heterogeneity. However, species composition is more affected by restoration approaches than species richness. Lichen composition varies considerably while vascular plants and mosses are less affected by wall properties. We suggest strategies that are combining both societal targets, the preservation of historic monuments and of species diversity. Careful restoration is capable of supporting both, the maintenance of cultural heritage and of rare and unique anthropogenic habitats. Wall surface heterogeneity needs to be witnessed for both aspects as it affects both species composition as well as the effectiveness of cleaning methods.     

Predicting research excellence at the individual level: The importance of publication rate,top journal publications,and top 10% publications in the case of early career mathematicians

The purpose of this study was to examine the relationship between publication rate, top journal publications and excellence during the first eight years of the career, and how well publication rate, top journal publications and highly cited publications during the first four years of the career can predict whether an author attain excellence in the fifth to the eighth year. The dataset consisted of publication track records of 406 early career mathematicians in the sub-field of number theory collected from the MathSciNet database. Logistic regression and dominance analysis was applied to the data. The major conclusions were (1) publication rate had a positive effect on excellence during the first eighth years of the career. However, those who publish many articles in top journals, which implicitly require a high publication count, had an even higher probability of attaining excellence. These results suggest that publishing in top journals is very important in the process of attaining excellence in the early career in addition to publishing many papers; and (2) a dominance analysis indicated that the number of top journal publications and highly cited publications during the first four years of the career were the most important predictors of who will attain excellence in the later career. The results are discussed in relation to indicator development and science policy.     

The Effect of Mixed‐Age Classes in Sweden

Mixed‐aged (MA) classes are a common phenomenon around the world. In Sweden, these types of classes increased rapidly during the 1980s and 1990s, despite the fact that existing empirical support for MA classes is weak. In this paper, the effect of attending an MA class during grades 4–6 on students' cognitive skills is estimated. Using a unique survey with information on students, parents, and teachers, it is possible to control for many factors that could otherwise bias the results. A negative effect on short‐run cognitive skills, as measured by grade 6 cognitive tests, was found. This effect is relatively large—almost 5 percentile points—and robust to a rigorous sensitivity analysis. On grade 9 credits the effect is still negative but smaller in size and not statistically significant.     

Technical knowledge in a technical society: elementary school technology education in Sweden, 1919–1928

The aim of this article is to identify a technical domain of knowledge in the curriculum of the Swedish elementary school and views on elementary school technology of two interest groups – school teachers and engineers. Gradually during the early to mid‐1920s there was increased technical content in the Swedish elementary school, if we look at the new curriculum, in‐service education and stakeholders’ views. The main reasons for this were, first of all, that the first decades of the twentieth century witnessed industrial growth with accompanying technification of large parts of society including the school. Second, the curriculum of 1919 had a broader technical content than earlier curricula, and thus mirrored the societal changes. Third, vocational secondary schools led to new requirements in respect of elementary technology education. Representatives of the Government were prime movers in enhancing the significance of technology in school together with teachers, while engineers generally showed little interest.     

Learning biology and mathematics outdoors: effects and attitudes in a Swedish high school context

This research suggests that learning biology in an outdoor environment has a positive cognitive and affective impact on 13–15-year-old, Swedish high school pupils. Eighty-five pupils in four classes participated in a quasi-experimental design. Half the pupils, taking a biology course in ecology or diversity of life, had several lessons outdoors and the other half were taught indoors. All of the classes, but one, also had mathematics lessons outdoors once a week. Twenty-one pupils were interviewed five months after the course and all were positive towards the new learning environment they had experienced outdoors in biology and/or mathematics. They also valued the higher degree of interaction among the pupils. Other findings from the interviews were that the pupils from the outdoor classes showed a higher degree of long-term knowledge retention. They remembered both activities and contents better than the pupils in the indoor classes. An essay-type question assessing their biological understanding qualitatively according to the Structure of Observed Learning Outcome taxonomy revealed no differences between the groups. The results are discussed in the light of neurocognitive models of long-term memory.     

The moderating role of internal and external resources on the performance effect of multitasking: Evidence from the R&D performance of surgeons

R&D employees frequently must split their limited time between explorative R&D and exploitative operative tasks. This article explores the influence of this multitasking (pursuing both R&D and operations) on employee R&D performance. The article also analyzes how the relationship between multitasking and individual R&D performance interacts with the degree of access to internal and external resources. We hypothesize that multitasking positively affects R&D performance. Furthermore, we assume that the internal resources (funding, facilities, and support) are increasingly relevant when employees combine R&D and operative activities. However, multitasking employees may show less of a need for external resources (access to networks) in comparison to more focused colleagues. The results of a survey of 332 surgeons from 20 academic medical centers in Germany support our hypotheses. We conclude that managers should ensure that their R&D workforce is also involved in daily operations. Output will be optimized if these employees are not only engaged with explorative tasks but are also involved in exploitative activities. However, managers should also ensure that the appropriate organizational support is provided to individuals who attempt to combine exploration and exploitation. Multitasking individuals benefit the most from access to internal resources, whereas external resources are more efficiently allocated to explorative-only employees.     

Performance in a simulated cricket batting innings (BATEX): reliability and discrimination between playing standards

The reliability (test-retest) of running-between-the-wickets times and skill performance was assessed during a batting exercise (BATEX) simulation of 2 h 20 min duration that requires intermittent shuttle running. In addition, performance and physiological responses (heart rate, sweat rate, rating of perceived exertion, blood lactate concentration) were compared between high- and low-grade district club batsmen (n = 22, mean ± s: age 20 ± 2 years, mass 73.4 ± 8.5 kg). Running-between-the-wickets performance was assessed with an infra-red timing system (Swift, Australia) by sampling a 5-m time for the middle section of the straight-line sprints (singles) and the time to complete 5 m in and out of the turn (5-0-5-m turn time). Skill performance was rated as a percentage for good bat-ball contacts. Coefficients of variation for running-between-the-wickets performance and percentage of good bat-ball contacts were both <5%. Percentage of good bat-ball contacts was greater in the high- than low-grade batsmen (70 ± 8 vs. 58 ± 9%, P = 0.01). All other variables were similar between grades. Running-between-the-wickets and skill-performance measures during the BATEX simulation were reliable, thus it can be used in future research.     

Privileging and Artifacts: On the Use of Information Technology in Science Education

The aim of this paper is to develop an approach that can be used in addressing the issue of the use of information technology and its importance in human meaning making. By using a combination of Wittgenstein’s work method, a sociocultural perspective on learning, and a sociotechnical perspective on artifacts a specific focus for analyses was discerned: the relation between the use-of-technology in meaning-making on one hand and the circumstances for this meaning-making on the other hand. The conversations of six groups of children, who worked with an assignment, that required that they doubted information they encountered, were video recorded and analyzed. The analyses were done in three interrelated steps. (a) The students use-of-technology in meaning making, (b) the meaning patterns that the students encounter on the web, and (c) students’ intentions and habits. Our findings show that, while the mode of reinforcement of the texts used by the students may have provided little opportunity for doubt or learning how to doubt, the students’ habits and intentions with their work determined the result of the interaction, namely copying information from the web. Taking our point of departure in this empirical illustration we discuss theoretical and methodological questions concerning the understanding of the use of information technology in educational settings.     

An education policy paradigm that fails upper secondary school pupils

In this article, we illustrate the creation of the education policy paradigm that constitutes the framework of vocational education and training (VET) programmes, and analyse local school representatives’ perception of VET in upper secondary schools in Sweden. The education policy paradigm, established through three periods of reform during the twentieth century, undervalues VET as being less worthy than general/academic education. This paradigm generates the rhetoric used by interviewed school representatives that encourages school pupils to choose the ‘right’ (academic) programmes in order to foster a specific citizenship competence, even if this competence is not fully compatible with labour market demands. Young people who cannot, or will not, attain the ‘right’ education, and thus the advocated citizenship competence, lose out in a school system where general/academic education and higher education preparatory programmes are consistently prioritised over VET. An educational system that advocates discrimination and suspicion of VET limits career options and restricts entry into the labour market, as well as risk stigmatising pupils undertaking VET; this paradigm is neither justified nor democratic.