Climate change education: quantitatively assessing the impact of a botanical garden as an informal learning environment

Although informal learning environments have been studied extensively, ours is one of the first studies to quantitatively assess the impact of learning in botanical gardens on students' cognitive achievement. We observed a group of 10th graders participating in a one-day educational intervention on climate change implemented in a botanical garden. The students completed multiple-choice questionnaires in a pre-post-retention test design. Comparing the test scores revealed a significant short-term knowledge gain as well as a long-term knowledge gain. Consequently, our results show the potentials of botanical gardens as effective learning environments, and for complementing formal school-based learning settings regarding climate change education.     

A multichannel acoustically driven microfluidic chip to study particle-cell interactions

Microfluidic devices have emerged as important tools for experimental physiology. They allow to study the effects of hydrodynamic flow on physiological and pathophysiological processes, e.g., in the circulatory system of the body. Such dynamic in vitro test systems are essential in order to address fundamental problems in drug delivery and targeted imaging, such as the binding of particles to cells under flow. In the present work an acoustically driven microfluidic platform is presented in which four miniature flow channels can be operated in parallel at distinct flow velocities with only slight inter-experimental variations. The device can accommodate various channel architectures and is fully compatible with cell culture as well as microscopy. Moreover, the flow channels can be readily separated from the surface acoustic wave pumps and subsequently channel-associated luminescence, absorbance, and/or fluorescence can be determined with a standard microplate reader. In order to create artificial blood vessels, different coatings were evaluated for the cultivation of endothelial cells in the microchannels. It was found that 0.01% fibronectin is the most suitable coating for growth of endothelial monolayers. Finally, the microfluidic system was used to study the binding of 1 μm polystyrene microspheres to three different types of endothelial cell monolayers (HUVEC, HUVECtert, HMEC-1) at different average shear rates. It demonstrated that average shear rates between 0.5 s⁻¹ and 2.25 s⁻¹ exert no significant effect on cytoadhesion of particles to all three types of endothelial monolayers. In conclusion, the multichannel microfluidic platform is a promising device to study the impact of hydrodynamic forces on cell physiology and binding of drug carriers to endothelium.     

Capturing information on technology convergence,international collaboration,and knowledge flow from patent documents: A case of information and communication technology

In addressing persistent gaps in existing theories, recent advances in data-driven research approaches offer novel perspectives and exciting insights across a spectrum of scientific fields concerned with technological change and the socio-economic impact thereof. The present investigation suggests a novel approach to identify and analyze the evolution of technology sectors, in this case, information and communications technology (ICT), considering international collaboration patterns and knowledge flows and spillovers via information inputs derived from patent documents.The objective is to utilize and explore information regarding inventors’ geo-location, technology sector classifications, and patent citation records to construct various types of networks. This, in turn, will open up avenues to discover the nature of evolutionary pathways in ICT trajectories and will also provide evidence of how the overall ICT knowledge space, as well as directional knowledge flows within the ICT space, have evolved differently. It is expected that this data-driven inquiry will deliver intuitive results for decision makers seeking evidence for future resource allocation and who are interested in identifying well-suited collaborators for the development of potential next-generation technologies. Further, it will equip researchers in technology management, economic geography, or similar fields with a systematic approach to analyze evolutionary pathways of technological advancements and further enable exploitation and development of new theories regarding technological change and its socio-economic consequences.     

Zwischen Seniorität und Alterität

Demographic changes are leading to an altered population structure and subsequently to changes in the age structure of potential participants in educational training. Adult education has reacted to this by developing special provisions for older participants and a concept of intergenerational learning provision for different generations. Arranging such intentional intergenerational processes is indeed no small task for adult education. This contribution will look at this challenge more closely. To this aim, the orientations of professional and non-professional adult educators and participants in intergenerational learning processes will be reconstructed in a qualitative investigation. It can be shown that the andragogic skill of adult educators is a pre-requisite for the facilitation of learning processes, which are explicitly intergenerational.     

Evaluating the effectiveness of university widening participation activities in rural Australia

This article explores the effect university widening participation activities have had in improving access to university of students from rural government-run schools in New South Wales, Australia. An effective effort to evaluate the success of widening participation programs in rural Australia, specifically New South Wales, has not been achieved to date. This article addresses this issue in three distinct ways. First, previous efforts to evaluate widening participation effectiveness are explored and their successes and failings are described. Second, a method to rigorously evaluate university-run outreach programs in Australia’s unique socio-cultural context is constructed and explained. Third, this method is employed using a sample of Australian rural schools to evaluate outreach effectiveness. A mixed-method design combining multilevel growth models and in-depth interviews of careers advisors revealed teacher support of university outreach presence in schools did not necessarily translate to an opinion of outreach effectivity in raising university access levels. This was supported by quantitative analyses showing widening participation efforts in rural New South Wales have had little to no effect on the progression of rural students to university between 2010 and 2016.     

On Defining “Wisdom”: Baltes,Ardelt, Ryan,and Whitehead

Wisdom has been a topic of religion and philosophy since the dawning of human civilization. But only during the last two or three decades wisdom has become a topic of empirical research in developmental psychology, adult and old age education, as well as in management and leadership studies. The aim of this paper is to elaborate a new definition of “wisdom,” in order to provide a more adequate foundation for empirical wisdom research. To reach this goal, two empirical wisdom theories (Baltes and Ardelt) and two philosophical wisdom approaches (Ryan and Whitehead) are presented, discussed, compared, and synthesized. The results show that despite the fact that Baltes’ definition of “wisdom” is somewhat wider than Ardelt’s, their approaches have many aspects in common. Additionally, also Whitehead’s ideas on wisdom are quite similar to Baltes’ core criteria concerning wisdom-related knowledge, but Whitehead mentions two additional aspects which go beyond Baltes’ approach. Further, according to Ryan, wise persons must have very few unjustified beliefs; this necessary condition for a wise person is neither mentioned by Baltes, nor by Ardelt or Whitehead. Based on the ideas of these four approaches, a new definition of “wisdom” is presented, in which wisdom is relativised to time indices and moral systems. This definition consists of a cognitive, an ethical, and a reflective component. Further it is shown that Fischer’s and Dawson’s Lectical Assessment System is a major candidate for measuring wisdom on the basis of our new definition.     

Biomechanics of the two-handed dyno technique for sport climbing

The two-handed dyno technique was studied in nine experienced climbers. According to textbooks, the preferred technique is to jump only as high as necessary and to grab the upper hold exactly at the dead point (highest position of the body centre of mass). Piezoelectric force transducers were connected to the right and left footholds and to the lower and upper handholds. From the forces, the vertical take-off velocity and the jump height were calculated. The results showed that in unsuccessful jumps, the vertical take-off velocity is too small. In successful jumps, however, the vertical take-off velocity is higher than required. In order to reach the same required minimal height, the successful jumper produced a higher force than the unsuccessful (including marginal fail) jumper did. The force produced by the feet was approximately 1.8 times higher than that of the hands. Unsuccessful jumps were significantly closer to the dead point than successful ones. The peak force at the fingers after touchdown at the upper hold ranged from 1.1 to 1.63 times body weight. Overshooting, i.e. jumping higher than required resulted in a smaller peak force and a greater chance of performing a successful jump. In successful jumps, the climber jumps higher than required and grabs the upper hold before and below the dead point. Furthermore, the closer to the dead point the climber grasps the upper hold, the higher is the peak reaction force at the fingers. The advice for the climber is to jump higher than necessary (at least 10 cm), and to grab the handhold before the dead point. This results in a high success rate and a minimal finger injury risk.     

Activity identification and classification in wheelchair rugby using fractal dimensions

The purpose of the study was to develop an evidence-based method for identification and classification of wheelchair sports (rugby) activities and performance during a match using fractal dimensions. The approach involves five wheelchair rugby athletes of different classifications who were monitored during six different matches using mobile devices with in-built accelerometers. The linear acceleration signals were processed using two different approaches based on calculating fractal dimensions. One was based on Rényi’s entropy, which produced the probability dimension (S ₀), and the other was based on Hausdorff’s definition, resulting in the Hausdorff dimension (D _H). When both dimensions were individually plotted as cumulative distribution plots, they offered two approaches to analyze the performance of a wheelchair rugby athlete. Combining the two dimensions produced a two-dimensional (2D) mapping that identified five different activities of each athlete during a wheelchair rugby match—(1) no activities, (2) low activities, (3) high-speed coasting, (4) high-speed pushing, and (5) extreme collisions. In the 2D mapping, four boundary lines separate the five different activities, which produced a template for each athlete. It was found in this research that the classification and skill level of the athlete had an effect on the boundary line values that form the template. The outcome of the activity identification was also verified by comparing with video footage of the athletes. The method developed in this research has possible applications for coaching, match analysis, and talent identification.