Science and thinking: The write connection

The effective use of writing in science instruction may open the way for students to grow in their ability to exercise higher order thinking skills (Bland & Koppel, 1988). Scinto (1986) makes a compelling case for writing as a means of stimulating thinking when he states: The production of written text demands more elaborate strategies of preplanning. Written language demands the conscious organization of ensembles of propositions to achieve its end. The need to manipulate linguistic means in such a conscious and deliberate fashion entails a level of linguistic self-reflection not called forth in oral discourse (p. 101).     

Explaining Australia’s increased share of ISI publications—the effects of a funding formula based on publication counts

Australia’s share of publications in the Science Citation Index (SCI) has increased by 25% in the last decade. The worrying aspect associated with this trend is the significant decline in citation impact Australia is achieving relative to other countries. It has dropped from sixth position in a ranking of 11 OECD countries in 1988, to 10th position by 1993, and the distance from ninth place continues to widen.The increased publication activity came at a time when publication output was expected to decline due to pressures facing the higher education sector, which accounts for over two-thirds of Australian publications. This paper examines possible methodological and contextual explanations of the trends in Australia’s presence in the SCI, and undertakes a detailed comparison of two universities that introduced diverse research management strategies in the late 1980s. The conclusion reached is that the driving force behind the Australian trends appears to lie with the increased culture of evaluation faced by the sector. Significant funds are distributed to universities, and within universities, on the basis of aggregate publication counts, with little attention paid to the impact or quality of that output. In consequence, journal publication productivity has increased significantly in the last decade, but its impact has declined.     

Flipping the Script: When Service-Learning Recipients Become Service-Learning Givers

Urban education is a complex system that is often shrouded in stereotypes, labels, and barriers. Service-learning is well-entrenched in suburban institutions, but is a fledgling or grassroots organization in the urban education community. Often, suburban service-learning initiatives have taken the tone of community service in that it is often directed (albeit often inadvertently) at lower socio-economic families (e.g., to help the homeless, fill the food banks for the hungry, participate in clothing drives). Such initiatives leave some urban students feeling disenfranchised, powerless, and dependent. However, critical service-learning in urban schools can provide a connection to the community, as well as a sense of empowerment, confidence, and intrinsic motivation (Mitchell, 2007 Mitchell, T. (2007). Critical service-learning as social justice education: A case study of the citizen scholars program. Equity & Excellence in Education, 40, 101–112.[Taylor & Francis Online] , [Google Scholar]). When urban students see themselves as vital, powerful participants in giving back instead of being given to, they become critical partners, young leaders, and civically engaged citizens. Therefore, in this article, Pam, a middle school educator, and Tamara, a service-learning partner, examine how a teacher can institute critical service-learning programs in an urban classroom. By highlighting a teacher's intrinsic and extrinsic shifts, practical applications, and students' collaborations and reflections, this article illustrates how to move to critical service-learning in urban contexts. This examination has implications for how specific critical service-learning components can help teachers work with students to move toward socio-emotional growth.     

A simple and inexpensive enteric-coated capsule for delivery of acid-labile macromolecules to the small intestine

Understanding the ecology of the gastrointestinal tract and the impact of the contents on the host mucosa is emerging as an important area for defining both wellness and susceptibility to disease. Targeted delivery of drugs to treat specific small intestinal disorders such as small bowel bacterial overgrowth and targeting molecules to interrogate or to deliver vaccines to the remote regions of the small intestine has proven difficult. There is an unmet need for methodologies to release probes/drugs to remote regions of the gastrointestinal tract in furthering our understanding of gut health and pathogenesis. In order to address this concern, we need to know how the regional delivery of a surrogate labeled test compound is handled and in turn, if delivered locally as a liquid or powder, the dynamics of its subsequent handling and metabolism. In the studies we report on in this paper, we chose ¹³C sodium acetate (¹³C-acetate), which is a stable isotope probe that once absorbed in the small intestine can be readily measured non-invasively by collection and analysis of ¹³CO₂ in the breath. This would provide information of gastric emptying rates and an indication of the site of release and absorptive capacity. In a series of in vitro and in vivo pig experiments, we assessed the enteric-protective properties of a commercially available polymer EUDRAGIT®L100-55 on gelatin capsules and also on DRcaps®. Test results demonstrated that DRcaps®coated with EUDRAGIT®L100-55 possessed enhanced enteric-protective properties, particularly in vivo. These studies add to the body of knowledge regarding gastric emptying in pigs and also begin the process of gathering specifications for the design of a simple and cost-effective enteric-coated capsule for delivery of acid-labile macromolecules to the small intestine.