Quantity matters,but how does it work?: A comment on Lindahl     

Peter van den Besselaar  Ulf Sandström 《Journal of Informetrics》2018,12(4):1059-1062

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Contextualising Craft: Pedagogical Models for Craft Education     

Sinikka Pöllänen 《The International Journal of Art & Design Education》2009,28(3):249-260

Craft education in Finland is, in many aspects, in a state of change. This concerns the independent position of craft as a school subject, the content of the compulsory craft courses containing textiles and technical work, the implementation of the new concept of a holistic craft process in the National Core Curriculum and so on. This bears relevance to the question of how craft should be taught at school. This article explores the ways in which teachers can strengthen the relevance and meaningfulness of craft education at school. Teachers are challenged to provide more authentic instructional contexts and activities beyond the traditional curriculum in order to address successful living in today's society. One solution is to contextualise this teaching with the help of pedagogical models that realise the concept of holistic craft. The pedagogical models discussed in this article are based on curriculum publications, materials in print and research by other scholars.  相似文献   

Visual conceptualizations and models of science     

Katy Börner  Andrea Scharnhorst 《Journal of Informetrics》2009,3(3):161-172

This is the Guest Editor's introduction to the Special Issue on “Science of Science: Conceptualizations and Models of Science”, Journal of Informetrics. The introduction discusses challenges towards a theoretically grounded and practically useful science of science. It provides a brief chronological review of relevant work and argues for (1) the development of common frameworks for the comparison and combination of existing approaches, theories, laws, and measurements, (2) the combination of quantitative and qualitative studies of science, and (3) the operationalization of theoretical concepts in terms of measurement and empirical evidence. Next, three visual conceptualizations of science are discussed and compared. Each of them provides a framework for the comparison and combination of existing works, means to combine quantitative and qualitative data, and helps to operationalize and communicate theoretical concepts using empirical data. Last but not least, the contributions of and interlinkages among the papers included in this issue are discussed.  相似文献   

Vimentin networks at tunable ion-concentration in microfluidic drops     

Dammann C  Nöding B  Köster S 《Biomicrofluidics》2012,6(2):22009-2200910

The structure and function of biological systems, for example, cells and proteins, depend strongly on their chemical environment. To investigate such dependence, we design a polydimethylsiloxane-based microfluidic device to encapsulate biological systems in picoliter-sized drops. The content of each individual drop is tuned in a defined manner. As a key feature of our method, the individual chemical composition is determined and related to the drop content. In our case, the drop content is imaged using microscopy methods, while the drops are immobilized to allow for long-time studies. As an application of our device, we study the influence of divalent ions on vimentin intermediate filament networks in a quantitative way by tuning the magnesium concentration from drop to drop. This way we are able to directly image the effect of magnesium on the fluorescently tagged protein in a few hundreds of drops. Our study shows that with increasing magnesium concentration in the drops, the compaction of the networks becomes more pronounced. The degree of compaction is characterized by different morphologies; freely fluctuating networks are observed at comparatively low magnesium concentrations of 5–10 mM, while with increasing magnesium concentration reaching 16 mM they develop into fully aggregated networks. Our approach demonstrates how a systematic study of interactions in biological systems can benefit from the exceptional controllability of microfluidic methods.  相似文献   

Mothers with a history of abuse tend to show more impulsiveness     

E. Möhler  V. Matheis  L. Poustka  M. Marysko  P. Finke  C. Kaufmann  C. Reck  M. Cierpka  F. Resch 《Child abuse & neglect》2009,33(3):123-126

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Institutional narratives within the performative preschool in Sweden: ‘if we write that we're no good,that's not good publicity!’     

Annica Löfdahl  Héctor Pérez Prieto 《Early Years: An International Journal of Research and Development》2009,29(3):261-270

An increasingly important part of the work of preschool staff in Sweden today is to present their activities outwardly, including producing and presenting quality accounts of their activities and making them visible to a public audience. To grasp the local narratives, interviews were conducted with a few teachers and their school leader, aiming to describe how they reason about the work of formulating their activities in publicly accessible documents, and the consequences of this work. Theoretical concepts used for analysis and conclusions are performativity, which views performances as a means of control and change, and institutional narratives, as means to understand the effects of the local context on how activities and teaching are performed. Results show that the staff find and discuss detours in the presentation of their activities, where possible failings are made opaque. Paradoxically, such ‘detour actions’ will at the same time be disciplinary as the teachers adjust to the logic of performativity. Implications for policy and practice are discussed.  相似文献   

Enhanced speed control of a DC servo system using PI + DF controller tuned by stochastic fractal search technique     

Emre Çelik  Halil Gör 《Journal of The Franklin Institute》2019,356(3):1333-1359

Since Proportional?+?Integral?+?Derivative (PID) controller is still the workhorse in taking over the workload of process control systems, this article introduces a new design methodology toward improving the performance of such controller. After a PI control law with windup protection is given, it is combined with a derivative path employing a first-order low pass filter in an innovative way to develop a performant controller called PI?+?DF controller. In attempting to attain a high level of control performance, gains of this controller including proportional, integral, derivative and filter gains are tuned choosing the recently introduced Stochastic Fractal Search (SFS) algorithm owing to its superiority to many state-of-the-art algorithms considering convergence, accuracy and robustness. To evaluate the efficacy of SFS, Particle Swarm Optimization (PSO) is also applied to the case study. Furthermore, the presented SFS optimized PI?+?DF controller is compared to a recently reported control scheme through simulation and experimental tests on an identical DC servo system. After providing the stability proof, SFS tuned PI?+?DF controller is found to be the pioneer in exhibiting the most accurate speed response profile under complicated scenarios, which is followed by PSO tuned PI?+?DF controller and the existing control approach, respectively.  相似文献   

For the oppressed teacher: stay real!     

Ville Isomöttönen 《Teaching in Higher Education》2018,23(7):869-884

This article addresses teachers’ challenges in relation to other stakeholders, in light of funding policies and evaluation mechanisms. In particular, a condition where pressures toward high pass rates or ‘throughput’ in the degree system provide a good negotiation position for students with little learning orientation as to their aspirations after credit units is considered. This condition is intensi?ed by the fact that the mere completion goals of non-learning-oriented students align with the collective goals of administration (university), given the throughput-based funding policies. A teacher willing to honorably exercise the profession is, then, ‘squeezed in between.’ Daily teaching endures by the incorporation of the wrong kind of ?exibility, which undermines the education system. This problematic pattern is reviewed, and a remedy proposed by drawing on Freire and considering a recent theorization by Sutton on the position of an academic under a neoliberalist condition.  相似文献   

Varying access to professional,special educational support: a total population comparison of special educators in Swedish independent and municipal schools          下载免费PDF全文

Gunnlaugur Magnússon  Kerstin Göransson  Claes Nilholm 《Journal of Research in Special Educational Needs》2018,18(4):225-238

Independent schools are securely established in the Swedish education system. Prior research shows they generally have fewer pupils in need of support and lower proportions of special educators. Here, results are presented from a total population study of Swedish special educators (n = 4252) examined after 2001. The aim was to explore and compare the occupational situations of special educators working in Swedish municipal and independent schools. This is done by studying their occupational situations and the values they express regarding identification of – and work with – special support. The results show that while the respondents are demographically similar and express similar values, they have very different occupational situations. Those employed in independent schools have fewer years’ experience as special educators, are more often employed part‐time than full‐time and are more likely to hold other positions in schools (such as head teacher) than those employed in municipal schools. The results further illustrate different organisational approaches towards special educational support. Apparent is that independent schools offer professional special educational resources to a lower degree and utilise them differently. This is likely to influence the situation of pupils in need of support, and has consequences for the image of the Swedish education system.  相似文献   

It is only an intervention,but it can sow very fertile seeds: graduate physical education teachers’ interpretations of critical pedagogy     

Göran Gerdin  Rod Philpot  Wayne Smith 《Sport, Education and Society》2018,23(3):203-215

The role that school health and physical education (HPE) plays in the making of physically active and healthy citizens continues to be rearticulated within the field of HPE practice. In Australasia, for example, this is evident in HPE curricula changes that now span almost two decades with ongoing advocacy for greater recognition of socially critical perspectives of physical activity and health. This paper reports on one part of a larger collaborative project that focused on how HPE teachers understand and enact socially critical perspectives in their practice. The paper draws on interview data obtained from 20 secondary school HPE teachers, all of whom graduated from the same physical education teacher education (PETE) programme in New Zealand, a programme that espouses a socially critical orientation. The teaching experience of the study participants ranged from 1 to 22 years of service. The preliminary analysis involved deduction of common themes in relation to the research questions and then, drawing on the theoretical framework of Bourdieu [1990. The logic of practice. Cambridge: Polity Press], these themes were analysed in more detail to gain insight into how and why the graduate teachers’ expressed their particular understanding of HPE and critical pedagogy. The findings suggested that this PETE programme did have some impact on the participant teachers’ perceptions of physical activity and health, and the role of socially critical thinking. However, there was also evidence to suggest that many of them did not have a clear understanding of the transformative agenda of critical pedagogy. We conclude by suggesting that although this PETE programme did plant ‘seeds’ that had an impact on the graduate teachers’ awareness and thinking about socially critical issues in relation to physical activity and health, it did not necessarily turn them into critical pedagogues.  相似文献