Instability of Iron Sulfides on Recently Excavated Artifacts

Summary

The composition and nature of the different sulfides which can occur on underground iron are reviewed with reference to the literature, together with the various corrosion reactions. The type of pyrites on fossils and minerals is also included. The experimental work involved goethites and magnetites reacting with damp hydrogen sulfide gas to give mackinawite, pyrite and/or greigite. These can react exothermically and may be pyrophoric. Methods to increase stability and reduce the danger of pyrophoric oxidation are discussed.     

Publishing in Discipline-Specific Non-Library Journals for Promoting Information Literacy

Academic librarians tend to publish in traditional “library” journals rather than journals directed at other academic disciplines, thereby missing the opportunity to inform and educate a key audience. This article alerts librarians to publishing opportunities in discipline-specific academic journals in the Arts & Humanities, Sciences, and Social Sciences, both as a means of promoting information literacy (IL) and effecting outreach to faculty. Selection criteria are defined and discussed. The results of the study are presented by discipline in table format with data on each journal including publisher, affiliation, publication frequency, review time, acceptance rate, and ranking indicators.     

Executive function effects and numerical development in children: Behavioural and ERP evidence from a numerical Stroop paradigm

Most research on numerical development in children is behavioural, focusing on accuracy and response time in different problem formats. However, Temple and Posner (1998) used ERPs and the numerical distance task with 5-year-olds to show that the development of numerical representations is difficult to disentangle from the development of the executive components of response organization and execution. Here we use the numerical Stroop paradigm (NSP) and ERPs to study possible executive interference in numerical processing tasks in 6–8-year-old children. In the NSP, the numerical magnitude of the digits is task-relevant and the physical size of the digits is task-irrelevant. We show that younger children are highly susceptible to interference from irrelevant physical information such as digit size, but that access to the numerical representation is almost as fast in young children as in adults. We argue that the developmental trajectories for executive function and numerical processing may act together to determine numerical development in young children.     

The first year university experience: using personal epistemology to understand effective learning and teaching in higher education

Personal epistemological beliefs, or beliefs about knowing, provide a way in which to understand learning in a range of educational contexts because they are considered to act as filters for all other knowledge and beliefs. In particular, they provide a useful framework for investigating learning and teaching for first year students in tertiary education, who are typically considered to hold less sophisticated epistemological beliefs. Using semi-structured interviews, this study investigated the nature of beliefs about knowing and learning of 35 first year teacher education and creative writing students at a large metropolitan university in Australia. The interview analysis indicated that a relationship existed between individuals’ core beliefs about knowing and their beliefs about learning. This relationship has implications for the way in which we support first year students’ learning as they transition into university and progress through their courses.     

Continuing education module: postpartum maternal health care in the United States: a critical review

Postpartum maternal health care is a neglected aspect of women's health care. This neglect is evident in the limited national health objectives and data related to maternal health. Missed opportunities for enhancing the health care of postpartum women occur in the scope of routine postpartum care. Differing perceptions of maternal needs between nurses and new mothers also contribute to inadequate health care. Therefore, collecting national data on postpartum maternal morbidity, reforming postpartum care policies, providing holistic and flexible maternal health care, encouraging family support and involvement in support groups, and initiating educational programs are recommended. Further research is needed on issues related to postpartum maternal health.     

Educating for a high skills society? The landscape of federal employment,training and lifelong learning policy in Canada

Government reports and documents claim that building a knowledge economy and innovative society are key goals in Canada. In this paper, we draw on critical policy analysis to examine 10 Canadian federal government training and employment policies in relation to the government's espoused priorities of innovation and developing a high skills society and economy. Our findings highlight three areas of contradiction: a tension between high skills and low skills policy, a contradictory focus on the socially and economically excluded and included, and the paradox of both an active and passive federal government. Drawing on state theories such as inclusive liberalism and the social investment state, we argue that while a ‘highly skilled knowledge economy’ may form part of the overall skills discourse, these contradictions raise doubts that it is to become a reality in Canada in the near future.     

The inclusion and construction of the worthy citizen through lifelong learning: a focus on the OECD

This paper argues that underlying the OECD’s promotion of inclusion in, for and through lifelong learning is the notion of an ‘active citizen’ who establishes their worth through learning and, ultimately, competence. Through the critical examination of recent OECD policy documents on adult and lifelong learning, the paper also calls for a re‐examination of the purported goals of inclusion and participation, essential elements of ‘inclusive liberalism’.     

Determining the Anchor Composition for a Mixed-Format Test: Evaluation of Subpopulation Invariance of Linking Functions

This study examined the appropriateness of the anchor composition in a mixed-format test, which includes both multiple-choice (MC) and constructed-response (CR) items, using subpopulation invariance indices. Linking functions were derived in the nonequivalent groups with anchor test (NEAT) design using two types of anchor sets: (a) MC only and (b) a mix of MC and CR. In each anchor condition, the linking functions were also derived separately for males and females, and those subpopulation functions were compared to the total group function. In the MC-only condition, the difference between the subpopulation functions and the total group function was not trivial in a score region that included cut scores, leading to inconsistent pass/fail decisions for low-performing examinees in particular. Overall, the mixed anchor was a better choice than the MC-only anchor to achieve subpopulation invariance between males and females. The research reinforces subpopulation invariance indices as a means of determining the adequacy of the anchor.     

The influence of study methods and knowledge processing on academic success and long‐term recall of anatomy learning by first‐year veterinary students

The purpose of this investigation was to quantitatively and qualitatively identify the study methods and learning strategies that veterinary students used to study anatomy during their first year of professional school and to correlate these with their academic achievement and long‐term recall of information. It was surmised that active study methods would be more beneficial than passive method, but this hypothesis was not supported. The activity or passivity of each study method was secondary to the way in which the students processed the learning. No single study method was associated with academic success or long‐term recall; instead, successful students used a multitude of study methods while the struggling students relied on a single method alone, although these methods varied from student to student. Students and their study methods were profiled using the qualitative technique known as phenomenographic analysis to find those who studied in a deep or surface way. The deep‐processing students, who commonly used multiple study methods, not only succeeded in the class but also had better recall. Students who relied on a memorization‐heavy surface approach to learning had limited recall and tended to perform poorly in the class. These results strongly suggest that by encouraging students to integrate their studying by using multiple methods educators can improve both student grades and recall of complex topics. Anat Sci Ed 1:68–74, 2008. © 2008 American Association of Anatomists.