Refinements Introduced in the Oddy Test Methodology

The ‘Oddy test’ is an accelerated corrosion test introduced in the 1970s at the British Museum to identify materials likely to emit volatile substances that could harm museum artefacts. It is carried out in many museums all around the world, but not always using the same methodology, which makes it difficult to compare and share test results between institutions. Refinements to the Oddy test methodology have been implemented at the British Museum over the last decade and the aim of this paper is to present these and promote consistency across institutions. The modifications introduced concern the method used to wash the glassware, the preparation of the metal coupons, and standard methods for preparing samples of liquid coatings, adhesives, and adhesive tapes. Finally, conducting Oddy tests is time consuming and measures employed at the British Museum to reduce the number of materials to be tested and streamline testing are described.     

A study of untrained models for multimodal information retrieval

Operational multimodal information retrieval systems have to deal with increasingly complex document collections and queries that are composed of a large set of textual and non-textual modalities such as ratings, prices, timestamps, geographical coordinates, etc. The resulting combinatorial explosion of modality combinations makes it intractable to treat each modality individually and to obtain suitable training data. As a consequence, instead of finding and training new models for each individual modality or combination of modalities, it is crucial to establish unified models, and fuse their outputs in a robust way. Since the most popular weighting schemes for textual retrieval have in the past generalized well to many retrieval tasks, we demonstrate how they can be adapted to be used with non-textual modalities, which is a first step towards finding such a unified model. We demonstrate that the popular weighting scheme BM25 is suitable to be used for multimodal IR systems and analyze the underlying assumptions of the BM25 formula with respect to merging modalities under the so-called raw-score merging hypothesis, which requires no training. We establish a multimodal baseline for two multimodal test collections, show how modalities differ with respect to their contribution to relevance and the difficulty of treating modalities with overlapping information. Our experiments demonstrate that our multimodal baseline with no training achieves a significantly higher retrieval effectiveness than using just the textual modality for the social book search 2016 collection and lies in the range of a trained multimodal approach using the optimal linear combination of the modality scores.     

A tool instead of a chore: Measuring student learning gains in order to improve instruction

Assessment is often treated as an unwelcome and time-consuming university or departmental requirement. This project proposes that assessment is actually an opportunity that communication faculty should embrace. Beginning with the end in mind, this study used stated course learning outcomes to construct a pre-/posttest instrument, administering those assessments in order to find out whether students were really learning what they were supposed to be learning. This article explains how the assessment instruments were constructed and administered, demonstrates clear and significant learning gains across three semesters, and identifies learning outcomes in need of instructional improvement. It also finds that by separating assessment from grading, pretests can identify concepts that need not be retaught, and posttests can reveal that an instructor’s perception of a successful instructional day does not necessarily match the reality of student learning for that day.     

Special Deliveries: Towards a Methodology for Generous Fulfillment of Special Collections Interlibrary Loan Requests

This article explores the implementation of special collections interlibrary loan policies and procedures at the University of South Florida (USF), focusing particularly on the development of policies related to physically loaning published materials, and traces the development of these policies through a pilot project to routinized implementation. Particular attention is paid to developing mutually beneficial workflows between special collections and interlibrary loan departments, creating transparent policies for the criteria under which requests are or are not filled, and technical considerations for implementing special collections loans. Through this case study, we highlight the potential for collaboration in the fulfillment of special deliveries.     

Testing Measurement Invariance of Hedonic and Eudaimonic Entertainment Experiences Across Media Formats

The aim of this study is to investigate the measurement invariance of media users’ entertainment experiences as conceptualized by two-process models of entertainment (i.e., enjoyment and appreciation) across different media formats. With this purpose, the present research relates to the recent rise of entertainment research, embracing more and more media types and formats with which entertainment experiences may occur. At the same time, it addresses a methodological issue that has rarely been addressed in communication research. Focusing on one of the most often used measurement instruments in entertainment research, on three different media formats (political talk shows, comedies, and dramas), the study finds evidence for configural, metric, and scalar invariance for the scale. The theoretical and practical implications of the findings are discussed.     

School inspections in low- and middle-income countries: Explaining impact and mechanisms of impact

Many efforts to implement and improve school inspections have been modelled on examples from high-income countries, and many studies on the effectiveness of such systems have also only been carried out in these countries. However, local contexts in low- and middle-income countries are very different from those in developed countries, and findings about the effectiveness of school inspections from Western studies are therefore not easily transferable to low- and middle-income countries. Existing literature portrays complex and varied links amongst governance context, policy, design of accountability systems, mechanisms of impact and school outcomes that make translation of conditions across studies challenging. This paper presents the results of a systematic review about the conditions under which school inspections lead to improvement in schools and to positive learning outcomes for schoolchildren in low- and middle-income countries, especially the poorest and most marginalised.     

Footprints in the woods:‘tracking’ a nursery child through a Forest School session

Forest School has become increasingly popular in the UK, although little is known about what actually happens in sessions and how these sessions are planned. Using observations of two sessions and semi-structured interviews with two adult leaders this article sets out to explore how the sessions are planned, alongside a young child (aged 2–4 years) is involved and how adults participate in activities. This was achieved by ‘tracking’ one child over two one-hour sessions using the Leuven Involvement and Participation Scales as a diagnostic, analytical tool. The two sessions were then compared. This case study approach indicates that there is a link between adult participation and child involvement, alongside training which have implications for the impact and development of Forest School pedagogy and reflective practice.