OER and the value of openness: implications for the knowledge economy

The knowledge economy is marked by recent trends in technological advancement, globalisation and increasing knowledge intensity. Through new technologies like Open Educational Resources (OER), knowledge can be freely accessed by individuals around the world, blurring traditional notions of ownership and prompting a social transformation manifested through values based on open knowledge access. This paper examines the extent to which values of openness are at odds with the capitalist frameworks underlying the knowledge economy and considers whether the influence of openness is transitory or whether a new capitalism must evolve in order to support social forces based on these values.     

Redesigning a General Education Science Course to Promote Critical Thinking

Recent studies question the effectiveness of a traditional university curriculum in helping students improve their critical thinking and scientific literacy. We developed an introductory, general education (gen ed) science course to overcome both deficiencies. The course, titled Foundations of Science, differs from most gen ed science offerings in that it is interdisciplinary; emphasizes the nature of science along with, rather than primarily, the findings of science; incorporates case studies, such as the vaccine-autism controversy; teaches the basics of argumentation and logical fallacies; contrasts science with pseudoscience; and addresses psychological factors that might otherwise lead students to reject scientific ideas they find uncomfortable. Using a pretest versus posttest design, we show that students who completed the experimental course significantly improved their critical-thinking skills and were more willing to engage scientific theories the general public finds controversial (e.g., evolution), while students who completed a traditional gen ed science course did not. Our results demonstrate that a gen ed science course emphasizing the process and application of science rather than just scientific facts can lead to improved critical thinking and scientific literacy.     

Two-dimensional spatial manipulation of microparticles in continuous flows in acoustofluidic systems

We report a modeling and experimental study of techniques to acoustically focus particles flowing through a microfluidic channel. Our theoretical model differs from prior works in that we solve an approximate 2-D wave transmission model that accounts for wave propagation in both the solid and fluid phases. Our simulations indicate that particles can be effectively focused at driving frequencies as high as 10% off of the resonant condition. This conclusion is supported by experiments on the acoustic focusing of particles in nearly square microchannels, which are studied for different flow rates, driving frequencies and placements of the lead zirconate titanate transducer, either underneath the microchannel or underneath a parallel trough. The relative acoustic potential energy and the resultant velocity fields for particles with positive acoustic contrast coefficients are estimated in the 2-D limit. Confocal microscopy was used to observe the spatial distribution of the flowing microparticles in three dimensions. Through these studies, we show that a single driving frequency from a single piezoelectric actuator can induce the 2-D concentration of particles in a microchannel with a nearly square cross section, and we correlate these behaviors with theoretical predictions. We also show that it is possible to control the extent of focusing of the microparticles, and that it is possible to decouple the focusing of microparticles in the vertical direction from the lateral direction in rectangular channels with anisotropic cross sections. This study provides guidelines to design and operate microchip-based acoustofluidic devices for precise control over the spatial arrangement of microparticles for applications such as flow cytometry and cellular sorting.     

Isometric exercise and cognitive function: an investigation of acute dose–response effects during submaximal fatiguing contractions

The purpose of this study was to explore the dose–response relationship between exercise and cognitive performance using an acute bout of isometric exercise. University students (N = 55) were randomly assigned to control, 30%, 50% and 70% of maximum voluntary handgrip contraction groups. Participants performed a modified Stroop task before and after completion of an isometric handgrip endurance trial at their assigned exercise intensity. Ratings of perceived exertion (RPE) and forearm muscle activation (EMG) showed linear trends of progressively greater RPE and muscle activation at greater exercise intensity levels. Regression analysis showed significant (P < .05) linear degradations in frequency of errors on the Stroop task with increasing exercise intensity. We conclude that performing isometric exercise until exhaustion is associated with reduced cognitive performance and that higher intensity isometric exercise leads to greater performance impairments in a linear dose–response manner.     

Managing competences in entrepreneurial technology firms: a comparative institutional analysis of Germany, Sweden and the UK

Innovating firms in new industries face a number of technological and market risks, especially appropriability and competence destruction. However, the relative significance of these varies between different sub-sectors, and so do managerial ways of dealing with them. These in turn are influenced by institutional frameworks, particularly those governing skill formation systems and labour markets. Consequently, the relative success of firms in fields with different appropriability and competence destruction risks is likely to vary between countries with contrasting patterns of labour market organisation. In the biotechnology and computer software industries, there are major differences in the dominant risks faced by innovating firms such that we would expect their relative success to differ between Germany, Sweden and the UK. While the UK and, to a limited extent, Sweden, have developed institutions similar to those found in the US that help govern “radically innovative” firm competences, Germany has invested in institutional frameworks associated with “competency enhancing” human resource practices that give its firms an advantage in more generic technologies in which organisational complexity is higher. While the distribution of public companies across sub-sectors broadly follows these expectations, Sweden has developed considerable strength in middleware software. This results from changing property rights and personnel policies at Ericsson.     

Affective Assessment and Mathematics Classroom Engagement: A Case Study

This paper reports a case study of one student’s pattern of engagement in an eighth-grade algebra class. The student, Bryan, was a participant in a yearlong study of mathematical communication in middle school classrooms. His case is interesting both because of the striking differences between his being engaged and disengaged in classroom work, and because of the reasons he gives for his pattern of engagement. Several current theories of engagement and motivation are discussed as we attempt to gain insight into his actions and explanations. All are successful in describing parts of Bryan’s behavior. However, we argue both empirically and theoretically that none serve to characterize what we feel is the core of Bryan’s decision about engagement: his affective assessment of mathematics. We provide an analysis based on Rychlak’s (1988, 1994)Logical Learning Theory to give insights into Bryan’s assessment of mathematics, and discuss what this approach adds to our understanding of this particular case. This revised version was published online in July 2006 with corrections to the Cover Date.     

Exploring the Potential for Students to Develop Self-Awareness through Personalized Learning

Abstract

Personalized learning (PL) and social-emotional learning (SEL) are areas of increasing emphasis in U.S. educational policy and practice. With the goal of examining how these initiatives may be mutually supportive, this exploratory study investigates the potential for a PL experience to help middle school students develop the SEL skill of “self-awareness.” Using qualitative inquiry, we analyze reflective interviews with eleven students engaged in PL using an original self-awareness coding scheme. Our findings offer promising evidence that PL can promote self-awareness, including specific student examples, followed by recommendations for how PL and SEL efforts can be more strategically aligned.     

Inescapable shock and food-competition dominance in rats

Inescapable electric shock disrupts escape-avoidance learning in another apparatus. This study demonstrates a deficit in a nonlearning task in which no aversive stimulus occurs. In Experiment 1, inescapable shock lowered rats’ dominance in a food-competition situation relative to restrained controls. In Experiment 2, inescapable shock lowered rats dominance in the same food-competition situation relative to a group that received the equivalent amount of escapable shock, demonstrating that the inescapability of the shock caused at least part of the decrement observed in Experiment 1. Experiment 3 does not find that inescapable shock caused a significant difference in food consumed or running time when the rats were tested alone, showing it unlikely that the dominance effects were caused by decreased hunger or reduced running following inescapable shock.     

The longitudinal influences of computer-intensive learning experiences on at-risk elementary students

This evaluation study examined the school achievement and adjustment by at-risk students one year following their participation as fifth and sixth graders in computer-intensive classrooms using the Apple Classrooms of Tomorrow (ACOT) program. Comparisons between the former ACOT subjects and a matched control group who had attended the same elementary school were made on attitudes toward school, teacher evaluations, grades, computer skills, and standardized test scores. Results showed some advantages for the ACOT students in the seventh grade, but on most measures they were indistinguishable from the control group. Specifically, both groups appeared to remain at risk based on their poor performance and relatively poor adjustment. A key factor in interpreting outcomes for the ACOT group was the limited availability of computers in the seventh grade, which thus restricted their opportunities to apply or transfer the skills they had learned. This research was supported by a grant from Apple Classrooms of Tomorrow, Apple Computer, Inc.