A Brief History of the OCLC Members Council

ABSTRACT

On May 19, 2009, the Online Computer Library Center (OCLC) Members Council held its 90th and final meeting. It was the end of an era that began in 1977, when the Ohio College Library Center changed its name to OCLC and adopted a new governance structure that extended membership in the cooperative to libraries outside Ohio. In the ensuing 30 years, libraries around the world elected 450 delegates to attend three Council meetings each year at OCLC.     

Use of Polarised Light Microscopy to Improve Conservation of Parchment

ABSTRACT

The preservation state of parchment primarily depends on the structure of the collagen fibre network, which in turn is responsible for optical anisotropy, i.e. birefringence. Polarised light microscopy can therefore be used as a non-invasive technique that allows recording of birefringence distribution in the parchment, which directly relates to stress–strain distribution. Using samples from diverse sources (commercial parchment, parchment used by restorers for book binding, and parchment fabricated for the purpose of this study), we assessed the capability of polarised light microscopy for various diagnostics. We performed, for instance, identification of gelatinised regions, layered or ?brous regions in parchment cross section, qualitative analysis of parchment fat content (lipids), observation of stress-induced patterns resulting from tensile tests, and observation of water diffusion. These proof-of-principle experiments extend the capability of polarised light microscopy far beyond its common use and open the path to its deployment in conservation studies.     

SHORT REPORTS

This short report explores the quality of the care process for children with intellectual disabilities. A Delphi procedure was used to identify a set of indicators for the quality of the care process reflecting the perspectives of the care providers, the parents and the experts. The sample consisted of 59 individuals involved in different ways in the process of the caring for children with intellectual ­disabilities. The first round of the Delphi procedure resulted in 56 themes, distributed across four different phases of the care process. In the second round of the Delphi procedure, these themes were elaborated into 346 indicators that were, in turn, evaluated on their importance for the quality of the care process by the respondents. Finally, 328 indicators did meet the 85% criterion for consensus. Six themes proved to be relevant in all phases of care: transfer of information, report, consultation, attitude of care provider, respect and appointments. The operationalization of quality of care presented in this study points in the direction of actually measuring, monitoring and improving the quality of care for children with intellectual disabilities.     

Mathematical thinking intervention programmes for preschool children with normal and low number sense

This study investigated the possibility of enhancing the level of preschoolers’ number sense by introducing two intervention programmes, Let’s think! and Young children with special educational needs count, too! .Forty‐five preschoolers, mean age 66.4 months, were randomly assigned to the experimental and control groups. The experimental group received instruction twice a week, for half an hour, and for a period of nine months. Pretest–postest comparison revealed that the experimental group showed enhanced number‐sense performance immediately after the instruction ended, but the between‐group difference faded after six months. There were no statistically significant differences between the groups in general mathematical thinking abilities (transfer tasks) after the intervention.     

Effective special teacher characteristics: perceptions of preschool special educators in Greece

The aim of the present study was to evaluate six characteristics of effective special pre‐school teachers, similar to those used in the relevant literature. The study participants were all special teachers (n = 226), serving in Greek state and community pre‐primary educational institutions (i.e. kindergartens and day nurseries) for children with learning disabilities. Data were collected through a two‐part questionnaire sent to the targeted special teachers (response rate 100%) and through focused group discussion with teachers. Three characteristics emerged as salient features of an effective teacher: love for the children; competent pre‐service training and ongoing professional development; and professionalism and commitment. The remaining three characteristics assessed (i.e. effective communication skills, a well‐rounded personality, and instructional ability) were also judged to be essential. Based on each characteristic’s analysis, the paper discusses the implications of pre‐service and in‐service training for special teachers.     

A cross‐cultural comparison of childhood developmental disorders between schoolchildren in the Netherlands and Greece

The scope of the present study was first to evaluate the cross‐cultural reliability and validity of the Social Emotional Questionnaire (SEQ) and second to estimate and compare the prevalence rates of childhood developmental and psychiatric disorders in the general population of young children in the Netherlands and Greece. To this end, the caregivers of 1748 Dutch and 384 Greek 4–12‐year‐old children from the general population completed the SEQ. The number of children displaying symptoms of childhood developmental disorders was estimated by applying the Diagnostic and Statistical Manual of Mental Disorders‐IV criteria of symptom occurrence. Results showed that the reliability and the construct validity of the SEQ were acceptable in both countries and for all the age‐groups of children. Concerning the prevalence, the Greek children were found to display overall significantly more symptoms of developmental disorders than the Dutch children. However, when the number of children suffering from psychiatric symptoms in the clinical range was estimated using the clinical criteria provided by categorical classification systems, no statistical significant differences emerged between the two countries. This finding suggests that when the criterion of clinical impairment is applied in diagnostic procedures, the number of children suffering from severe psychiatric disorders is about equal in the two countries. The implications of the study are discussed.     

The Effects of Ignoring a Level in Multilevel Analysis

Ignoring a level can have a substantial impact on the conclusions of a multilevel analysis. For intercept-only models and for balanced data, we derive these effects analytically. For more complex random intercept models or for unbalanced data, a simulation study is performed. Most important effects concern estimates and corresponding standard errors of the variance parameters at adjacent levels and of the coefficients of the predictors at the ignored and bordering levels. Therefore, we conclude that if the researcher is interested in a specific level, she/he should account for both the upper and lower level. Conclusions are illustrated using empirical data from educational research.     

The Learning Consortium: A School‐University Partnership Program. An Introduction

ABSTRACT

Induction experiences of beginning teachers in schools that were classified as more effective or less effective on the basis of student achievement are compared. Classroom observations, interviews, and a “Beginning Teacher Questionnaire” were used to obtain information from teachers in the two groups. Three areas of socialization were examined: assistance, monitoring, and team‐building. Results indicate that historically more effective schools were more supportive of their beginning teachers. In addition, outcome data regarding teacher performance provides evidence of more effective teaching among teachers in more supportive schools, even though initial teacher effectiveness, levels of experience, and educational attainment were not different for the two groups.     

Knowledge and Technique in Statistical Problem‐Solving

Summaries

English

Subjects’ knowledge and technique in statistical problem‐solving, as well as their ability to detect their own problem‐solving errors, were studied. Twenty subjects were asked to solve two statistical problems, and then to explain their solutions to the experimenter. Finally, each subject was asked successively more detailed questions about his/her solution, particularly in reference to its erroneous parts. The results showed that subjects tended to describe rather than explain their solutions. Subjects eliminated three errors (4%) when accounting for their solutions and another 20 errors (24%) in the following interview. About one‐third of all errors were analysed as being due to deficiencies in subjects’ problem‐solving techniques. For 62% of the errors where subjects showed knowledge deficiencies, there were deficiencies in propositional knowledge, i.e. in subjects’ understanding of statistical concepts and their interrelations. The results showed that misunderstandings of concepts and methods of solution were much more common than lack of conceptions as such. In addition, the results suggest that deficiencies in subjects’ problem‐solving are related to motivational factors, such as a tendency to minimize cognitive strain. Pedagogical implications of the results are discussed.