A Genetically Optimized Predictive System for Success in General Chemistry Using a Diagnostic Algebra Test

In higher education, many high-enrollment introductory courses have evolved into “gatekeeper” courses due to their high failure rates. These courses prevent many students from attaining their educational goals and often become graduation roadblocks. At the authors’ home institution, general chemistry has become a gatekeeper course in which approximately 25% of students do not pass. This failure rate in chemistry is common, and often higher, at many other institutions of higher education, and mathematical deficiencies are perceived to be a large contributing factor. This paper details the development of a highly accurate predictive system that identifies students at the beginning of the semester who are “at-risk” for earning a grade of C- or below in chemistry. The predictive accuracy of this system is maximized by using a genetically optimized neural network to analyze the results of a diagnostic algebra test designed for a specific population. Once at-risk students have been identified, they can be helped to improve their chances of success using techniques such as concurrent support courses, online tutorials, “just-in-time” instructional aides, study skills, motivational interviewing, and/or peer mentoring.     

Preliminary comparison of the performance of the National Library of Medicine's systematic review publication type and the sensitive clinical queries filter for systematic reviews in PubMed

Objective:The National Library of Medicine (NLM) inaugurated a “publication type” concept to facilitate searches for systematic reviews (SRs). On the other hand, clinical queries (CQs) are validated search strategies designed to retrieve scientifically sound, clinically relevant original and review articles from biomedical literature databases. We compared the retrieval performance of the SR publication type (SR[pt]) against the most sensitive CQ for systematic review articles (CQrs) in PubMed.Methods:We ran date-limited searches of SR[pt] and CQrs to compare the relative yield of articles and SRs, focusing on the differences in retrieval of SRs by SR[pt] but not CQrs (SR[pt] NOT CQrs) and CQrs NOT SR[pt]. Random samples of articles retrieved in each of these comparisons were examined for SRs until a consistent pattern became evident.Results:For SR[pt] NOT CQrs, the yield was relatively low in quantity but rich in quality, with 79% of the articles being SRs. For CQrs NOT SR[pt], the yield was high in quantity but low in quality, with only 8% being SRs. For CQrs AND SR[pt], the quality was highest, with 92% being SRs.Conclusions:We found that SR[pt] had high precision and specificity for SRs but low recall (sensitivity), whereas CQrs had much higher recall. SR[pt] OR CQrs added valid SRs to the CQrs yield at low cost (i.e., added few non-SRs). For searches that are intended to be exhaustive for SRs, SR[pt] can be added to existing sensitive search filters.     

Effects of radiant heat exposure on pacing pattern during a 15-km cycling time trial

Abstract

The goal of this study was to investigate the effects of different durations of skin temperature manipulation on pacing patterns and performance during a 15-km cycling time trial. Nineteen well-trained men completed three 15-km cycling time trials in 18°C and 50% relative humidity with 4.5-km (short-heat), 9.0-km (long-heat) or without (control) radiant heat exposure applied by infrared heaters after 1.5 km in the time trial. During the time trials, power output, mean skin temperature, rectal temperature, heart rate and rating of perceived exertion were assessed. The radiant heat exposure resulted in higher mean skin temperature during the time trial for short-heat (35.0 ± 0.6°C) and long-heat (35.3 ± 0.5°C) than for control (32.5 ± 1.0°C; P < 0.001), whereas rectal temperature was similar (P = 0.55). The mean power output was less for short-heat (273 ± 8 W; P = 0.001) and long-heat (271 ± 9 W; P = 0.02) than for control (287 ± 7 W), but pacing patterns did not differ (P = 0.55). Heart rate was greatest in control (177 ± 9 beats · min^?1; P < 0.001), whereas the rating of perceived exertion remained similar. We concluded that a radiant heat exposure and associated higher skin temperature reduced overall performance, but did not modify pacing pattern during a 15-km cycling time trial, regardless of the duration of the exposure.     

A rapid evidence‐based service by librarians provided information to answer primary care clinical questions

Background: A librarian consultation service was offered to 88 primary care clinicians during office hours. This included a streamlined evidence‐based process to answer questions in fewer than 20 min. This included a contact centre accessed through a Web‐based platform and using hand‐held devices and computers with Web access. Librarians were given technical training in evidence‐based medicine, including how to summarise evidence. Objectives: To describe the process and lessons learned from developing and operating a rapid response librarian consultation service for primary care clinicians. Methods: Evaluation included librarian interviews and a clinician exit satisfaction survey. Results: Clinicians were positive about its impact on their clinical practice and decision making. The project revealed some important ‘lessons learned’ in the clinical use of hand‐held devices, knowledge translation and training for clinicians and librarians. Conclusions: The Just‐in‐Time Librarian Consultation Service showed that it was possible to provide evidence‐based answers to clinical questions in 15 min or less. The project overcame a number of barriers using innovative solutions. There are many opportunities to build on this experience for future joint projects of librarians and healthcare providers.     

Learning in science project (teacher development): The framework

The Centre for Science and Mathematics Education Research at the University of Waikato is now undertaking the fourth Learning in Science Project, LISP(Teacher Development). The project builds on the findings of the previous three projects on the nature of learning and how to improve learning of science in classrooms. This two-year project is investigating the process of teacher development (as change in behaviour and beliefs) in the context of two kinds of teacher courses that acknowledge and take into account teachers’ existing ideas. This paper summarises the planning done for the first phase of the project as detailed in Bell, Kirkwood and Pearson (1990). Specializations: learning theories, curriculum development, equity issues. Specializations: science education, teacher professional development.     

The Informational Text Structure Survey (ITS2): An exploration of primary grade teachers’ sensitivity to text structure in young children's informational texts

There has been no research reported about if or how well primary grade teachers can identify information text structures in children's authentic informational texts. The ability to do so accurately and reliably is a prerequisite for teachers to be able to teach students how to recognize and use text structures to assist them in comprehending informational texts. The authors report the development of the Informational Text Structure Survey (ITS²). Prior to training, primary grade teachers demonstrated low accuracy and reliability in identifying traditional expository text structures in well-structured children's grade level–appropriate informational texts. Results after training with the ITS² instrument showed significant improvements in the teachers’ accuracy and reliability in identifying traditional informational text structures in well-structured children's grade level–appropriate informational texts after training with the ITS² instrument.     

A Willingness to Fail: Reflections on the 2018 Religious Education Association Conference

Abstract

The 2018 Religious Education Association (REA) meeting, Beyond White Normativity: Creating Brave Spaces shed light for many on the failure of the REA to effectively confront the reality of white racial bias within its systemic and structural practices. This essay reflects on four specific ways these challenges emerged during the 2018 session and highlights strategies for how the association might continue the effort to address explicit and implicit racism in its midst.     

Access to local books: the effects of Read Malawi from a children's rights perspective

Children in low‐income, postcolonial countries such as Malawi have few opportunities with quality reading materials that promote independence as readers. In this study, we argue that access to locally produced text relevant to linguistic and cultural contexts is a fundamental human right for children throughout the world. Situating this study within the intersection of research on children's rights and complementary reading materials, we analyse data from a project in Malawi. We consider the ways in which a respect for children's educational rights – specifically, their rights to access information via children's books – can help them develop their biliteracy. Additionally, we examine how the Read Malawi program contributes to Malawian children's literacy development in both national and official languages. Our findings suggest not only a humanistic need for quality complementary books, but also the empirical justification for books in the hands of children; in particular, an interconnected relationship between borrowing books from school and engagement with Read Malawi was found, especially when we explore children's English proficiency. Through Read Malawi, this study exemplifies what a quality literacy intervention can do in supporting children's Chichewa and English proficiency and improving their rights to quality education.