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

Manuel Jonas Steinbauer  Andreas Gohlke  Christine Mahler  Andreas Schmiedinger  Carl Beierkuhnlein 《Journal of Cultural Heritage》2013,14(3):219-228

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.  相似文献   

Young refugees’ and asylum seekers’ career choices: a qualitative investigation     

Fedrigo  Laurence  Udayar  Shagini  Toscanelli  Cecilia  Clot-Siegrist  Eva  Durante  Federico  Masdonati  Jonas 《International Journal for Educational and Vocational Guidance》2022,22(2):407-428

International Journal for Educational and Vocational Guidance - A major challenge for refugees and asylum seekers is social and professional integration. Using constructivist and capability...  相似文献   

Mobile phones in education: Challenges and opportunities for learning     

Jared Keengwe  Gary Schnellert  Denise Jonas 《Education and Information Technologies》2014,19(2):441-450

The millennials use mobile phones on a daily basis to keep in touch with family and friends (Lenhart 2010). However, the role of mobile phones in education needs to be close examined as educators strive to incorporate mobile leaning devices in the classroom. Consequently, schools will not only need to evaluate their school curriculums but also recognize the power in the digital devices to engage, enable, and empower Gen-M and iGen learners. Therefore, the purpose of this article is to provide a rationale for the need for administrators to design guidelines for schools planning to adopt mobile phones in their curricula. Additionally, this article is intended to stimulate reflections on effective ways to adopt mobile phones in education to engage learners.  相似文献   

Young Children’s Prosocial Behavior Protects Against Academic Risk in Neighborhoods With Low Socioeconomic Status     

Emma Armstrong-Carter  Jonas G. Miller  Liam J. B. Hill  Benjamin W. Domingue 《Child development》2021,92(4):1509-1522

Children raised in neighborhoods with low socioeconomic status (SES) are at risk for low academic achievement. Identifying factors that help children from disadvantaged neighborhoods thrive is critical for reducing inequalities. We investigated whether children’s prosocial behavior buffers concurrent and subsequent academic risk in disadvantaged neighborhoods in Bradford, UK. Diverse children (N = 1,175) were followed until age seven, with measurements taken at four times. We used governmental indices of neighborhood-level SES, teacher observations of prosocial behaviors, and direct assessments of academic achievement. Neighborhood SES was positively associated with academic achievement among children with low levels of prosocial behavior, but not among children with high levels of prosocial behavior. Prosocial behavior may mitigate academic risk across early childhood.  相似文献   

Recent trends in European migration policies     

Jonas Widgren 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1975,21(3):275-285

This paper describes the composition of the migrant worker population in the countries of Western Europe. It traces developments in government policies regarding control and stabilization of immigration, provision for education and granting of political rights. The current international recession and the freeze on immigration might provide a much-needed breathing space for re-thinking policies that affect the personal, educational and vocational futures of large numbers of human beings.  相似文献   

In and out of place: exploring the discursive effects of teachers’ talk about outdoor education in secondary schools in New Zealand     

Jonas Mikaels  Erik Backman  Suzanne Lundvall 《Journal of Adventure Education & Outdoor Learning》2016,16(2):91-104

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Understanding the rise of e-participation in non-democracies: Domestic and international factors     

Joachim Åström  Martin Karlsson  Jonas Linde  Ali Pirannejad 《Government Information Quarterly》2012

While it has often been suggested that information and communication technologies (ICTs) provide an important means of increasing citizen participation (which is at the core of democratic government), few commentators have expected non-democracies to create online environments in which citizens can take an active part in political processes. In recent years, however, some non-democracies have begun to outperform countries with long-standing democratic traditions in terms of e-participation development. According to the 2010 United Nations (UN) e-government survey, Bahrain outranks France, Kazakhstan beats Sweden and Malaysia ranks higher than Germany. This article sets out to understand the recent rise of e-participation initiatives in non-democracies. Drawing on comparative longitudinal data from the UN e-government surveys, we tested the assertion that international drivers of change are competing with the dominant focus on domestic factors, especially in the non-democratic world, and are influencing the patterns of reform. The empirical analysis demonstrated important differences between the drivers of change in democratic and non-democratic countries and found economic globalization to be the strongest predictor of e-participation initiatives in non-democratic countries. In conclusion, we argue that economic globalization alters the context of e-participation and necessitates a re-examination of many of its premises and tenets.  相似文献   

A Content Analysis of Physical Activity in TV Shows Popular Among Adolescents     

Megan S. Gietzen  Sarah E. Gollust  Jennifer A. Linde  Dianne Neumark-Sztainer 《Research quarterly for exercise and sport》2017,88(1):72-82

Purpose: Previous research has demonstrated that television has the potential to influence youth behaviors, but little evidence exists on how television depicts physical activity (PA), an important public health priority for youth. This mixed-methods study investigated depictions of television characters' participation in PA in the top 25 favorite shows ranked by a diverse sample of 2,793 adolescents. Method: Randomly selected episodes from each show were content-analyzed for PA incidents, reasons, and context and in relation to the gender and weight status of participating characters. Results: A total of 374 incidents of PA were coded across 75 episodes, with an average of 5.0 incidents per episode. Although male and female characters were equally likely to engage in at least 1 incident of PA, male characters were involved in a statistically significantly larger proportion of PA incidents than were female characters, and they were more likely to engage in PA for competitive sport. There was no statistically significant difference in engagement in PA or the proportion of PA incidents for characters coded as overweight compared with nonoverweight characters. Conclusions: Although female characters tended to be underrepresented in PA, this study reveals positive messages for how gender and weight are portrayed in relation to PA on TV.  相似文献   

Sports activity patterns and cardio-metabolic health over time among adults in Germany: Results of a nationwide 12-year follow-up study     

Lars Gabrys  Jens Baumert  Christin Heidemann  Markus Busch  Jonas David Finger 《运动与健康科学(英文)》2021,10(4):439-446

BackgroundPhysical activity is favorable for health, and vigorous sports activity is particularly beneficial. This study investigates the association between changes in sports participation patterns over time and cardio-metabolic and self-perceived health outcomes.MethodsData from 3752 adults (18–79 years of age) who participated in 2 national health interview and examination surveys in 1997–1999 and 2008–2011 were included, with a mean follow-up time of about 12 years. A change in self-reported sports activity was analyzed with respect to the incidence of type 2 diabetes, coronary heart disease (CHD), hypertension, obesity, dyslipidemia, metabolic syndrome, and poor self-perceived health. Participants with pre-existing disease or risk factor of interest at baseline were excluded from the analysis. Being sufficiently active in sports was specified as doing sports for at least 1–2 h per week, and 4 activity categories were defined: 1) inactive at both time points (inactive–inactive), 2) inactive at baseline and active at follow-up (inactive–active), 3) active at baseline and inactive at follow-up (active–inactive), and 4) active at both time points (active–active). Associations between sports activity engagement and health outcomes were estimated by logistic regression models with different stages of adjustments.ResultsNot engaging in any regular sports activity at both time points (inactive–inactive) was associated with higher rates of type 2 diabetes (odds ratio (OR) = 1.82, 95% confidence interval (95%CI): 1.08–3.08), CHD (OR = 1.82, 95%CI: 1.16–2.84), hypertension (OR = 1.36, 95%CI: 1.03–1.81), metabolic syndrome (OR = 1.58, 95%CI: 1.08–2.32), and poor self-perceived health (OR = 2.54, 95%CI: 1.83–3.53) compared to doing regular sports for a minimum of 1–2 h per week over time (active–active). In case of change from inactivity to any regular sports activity (inactive–active), the rate of risk factor occurrence was not statistically different from the active–active reference group except for poor self-perceived health, but it was higher for type 2 diabetes (OR = 2.15, 95%CI: 1.12–4.14) and CHD (OR = 1.77, 95%CI: 1.03–3.03). Being active at baseline but inactive at follow-up (active–inactive) was not associated with higher disease incidence of type 2 diabetes (OR = 0.70, 95%CI: 0.25–1.97) or CHD (OR = 1.20, 95%CI: 0.49–2.99), but was associated with higher rates of hypertension (OR = 1.61, 95%CI: 1.11–2.34), obesity (OR = 2.34, 95%CI: 1.53–3.57), metabolic syndrome (OR = 1.70, 95%CI: 1.11–2.63), and poor self-perceived health (OR = 2.16, 95%CI: 1.53–3.07) at follow-up.ConclusionEven a low weekly quantity (1–2 h) of regular sports activity is partly associated with health benefits. Being formerly but not currently active was not associated with an increased disease incidence, but was associated with a higher risk-factor development compared to the reference group (active–active). Becoming active was preventive for risk-factor development but was not preventive for disease incidence, which probably means that the health benefits from sports activity are not sustainable and disease incidence is only shifted to a later period in life. For this reason, the promotion of and commitment to regular sports activity should be addressed as early as possible over the lifespan to achieve the best health benefits.  相似文献   

A fable for trainers     

Walter Jonas 《Performance Improvement》1993,32(9):24-26

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