Investigations regarding the behaviour of historic glass and its surface layers towards different wavelengths applied for laser cleaning     

Farideh Fekrsanati  Stefan Klein  Jens Hildenhagen  Klaus Dickmann  Yiorgos Marakis  Aleka Manousaki  Vassilis Zafiropulos   《Journal of Cultural Heritage》2001,2(4):187

The application of lasers for the removal of superficial deposits from historic stained glass is a comparatively new field of scientific interest. Experimental studies concerning the behaviour of glass substrates and the corresponding superficial deposits towards different laser wavelengths were carried out. The experiments were performed using wavelengths of λ = 193 nm (ArF-Excimer), 308 nm (XeCl-Excimer), 355 nm (Nd:YAG third harmonic) and 1 064 nm (Nd:YAG fundamental) in comparison to λ = 248 nm (KrF-Excimer). This comparison is due to the fact that the present knowledge is based on the 248 nm wavelength. Specially prepared model glass samples representing the original fragments and samples of organic polymers (formerly used as a protective material for historic stained glasses) were used to study the effects of laser radiation and were subsequently characterised by optical microscopy.  相似文献   

What Really Happens During a Paired Reading Project?     

Sam Winter 《British Journal of Special Education》1991,18(1):20-24

Sam Winter, formerly an educational psychologist working in Hartlepool, is now lecturer in the Department of Education, Hong Kong University. He is currently conducting an inquire into paired reading as a method of helping children who experience difficulties in learning to read.  相似文献   

Beeinflussung muskulärer Parameter durch ein zehnwöchiges Dehnungstraining     

Klaus Wiemann 《Sportwissenschaft》1991,21(3):295-306

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Editorial zum Themenheft: ?‘Software-Reengineering“’     

Jürgen Ebert  Franz Lehner  Volker Riediger und Andreas Winter 《Informatik - Forschung und Entwicklung》2005,19(3):125-126

Ohne Zusammenfassung  相似文献   

Shared Entertainment,Shared Opinions: The Influence of Social TV Comments on the Evaluation of Talent Shows     

Stephan Winter  Nicole C. Krämer  Brenda Benninghoff  Christine Gallus 《广播与电子媒介杂志》2018,62(1):21-37

The present research investigated whether co-viewer comments in social TV interactions are able to enhance or weaken media effects. With the example of talent shows, the valence of co-viewer comments (pro/contra/none) as well as the type of content (antisocial behavior vs. conventional performance) were varied in an experiment (N = 117). Results showed that participants’ own comments and their private attitudes about the judges varied in line with comment valence. Findings suggest that social TV viewers are prone to social influence of their co-viewers, which might amplify problems regarding the portrayal of antisocial behavior in reality TV.  相似文献   

Carrying Forward the Uses and Grats 2.0 Agenda: An Affordance-Driven Measure of Social Media Uses and Gratifications     

Chamil Rathnayake  Jenifer Sunrise Winter 《广播与电子媒介杂志》2018,62(3):371-389

The notion of social media affordances has not been fully integrated into the uses and gratifications literature. Building on the MAIN (modality, agency, interactivity, and navigability) model, this study develops and tests a social media uses and gratifications scale with a sample of 393 college students. Results of the study support the MAIN model, as conceptualizing social media uses and gratifications as a second-order factor structure with 4 different types of affordances displays similar goodness-of-fit to a single-order factor structure. A confirmatory factor analysis with a second sample of 313 adults further confirms the applicability of the scale among the general population.  相似文献   

The Human Rights Approach to Education in International Organisations     

Klaus Hüfner 《European Journal of Education》2011,46(1):117-126

In this article, the work of three international governmental organisations (IGOs) dealing with human rights will be discussed, namely the United Nations Educational, Scientific and Cultural Organization (UNESCO), the United Nations Children's Fund (UNICEF)¹ and the Council of Europe (CoE). In the first section, the main characteristics of the three IGOs in terms of similarities and differences will be elaborated. Then, their human rights approach to education will be described, dealing with the legal foundations. In the final section, the different strategies of implementation based on both their official mission statements and their present strategy papers will be evaluated under the heading ‘competition vs. cooperation’.  相似文献   

Education,Welfare Reform and Psychological Well-Being: A Critical Psychology Perspective     

Laura Anne Winter  Erica Burman  Terry Hanley  Afroditi Kalambouka  Lauren Mccoy 《British Journal of Educational Studies》2016,64(4):467-483

There are established links between education and well-being, and between poverty and education. This article draws on interviews with parents of school-aged children impacted by a policy in the UK commonly referred to as the ‘bedroom tax’. A critical psychology perspective to education is put forward, acknowledging the complex interrelationships between psychological well-being, sociopolitical factors and education.  相似文献   

The emergence and institutional co-determination of sustainability as a teaching topic in interdisciplinary science teacher education     

Klaus Rasmussen 《Environmental Education Research》2017,23(3):348-364

This paper takes an institutional perspective on the topic of sustainability in order to analyse how this ‘idea’ enters science teacher education through an interdisciplinary approach. It shows how the development and implementation of a course for Danish pre-service teachers was conditioned and constrained by a complex web of interactions in and among the teaching disciplines of biology, geography and physics/chemistry and among the institutions of school, teacher college and university. The data collected are used to identify influences among the disciplines as well as disciplinary differences, conceptualised through a new reference model that separates the analysis from the usual sustainability dimensions. The findings reveal how sustainability as a teaching topic can be a unifying idea in an interdisciplinary setting. Disciplinary differences evidently impact course planning and implementation significantly, but not exclusively. By elaborating on the interactions between these circumstances, the paper provides insight into the processes of developing interdisciplinary teacher education.  相似文献   

How to measure research efficiency in higher education? Research grants vs. publication output     

Sabine Gralka  Klaus Wohlrabe  Lutz Bornmann 《Journal of Higher Education Policy & Management》2019,41(3):322-341

An ongoing debate in the literature on the efficiency of higher education institutions concerns the indicator for research output for use in empirical analysis. While several studies have chosen to use the number of publications as this indicator, others rely on the amount of research grants. The present study investigates whether both measures lead to a similar assessment of universities. In addition, the number of publications belonging to the 10% and 1% most frequently cited papers in the corresponding subject category and publication year are evaluated. We show that there is a high correlation of efficiency values between the estimations using these indicators. This correlation is slightly higher when the efficiency values result from a data envelopment analysis than when they are determined with a stochastic frontier analysis. The results of this study provide helpful guidelines for researchers evaluating the efficiency of universities and are valueable for decision-makers in science policy.  相似文献