Play centers that encourage literacy development

Teachers are always searching for fresh ideas that address children's growth needs. Ideas that provide learning opportunities which are developmentally appropriate are particularly welcomed. using play as a medium for facilitating literacy growth is one such opportunity. We know from current theory, research and practice that sociodramatic play contributes to children's learning. Its importance in the development of literacy skills has also been investigated and affirmed. See Christie, 1991; Dodge & Frost, 1986; Fisher, 1991; Isenberg & Jacob, 1985; Morrow, 1989, 1990; Morrow & Rand, 1991; Pellegrini, 1980; Rogers & Sawyers, 1988; Schickendanz, 1986; Woodard, 1984.     

Neural information retrieval: at the end of the early years

A recent “third wave” of neural network (NN) approaches now delivers state-of-the-art performance in many machine learning tasks, spanning speech recognition, computer vision, and natural language processing. Because these modern NNs often comprise multiple interconnected layers, work in this area is often referred to as deep learning. Recent years have witnessed an explosive growth of research into NN-based approaches to information retrieval (IR). A significant body of work has now been created. In this paper, we survey the current landscape of Neural IR research, paying special attention to the use of learned distributed representations of textual units. We highlight the successes of neural IR thus far, catalog obstacles to its wider adoption, and suggest potentially promising directions for future research.     

Talk Back with Yik Yak? Exploring User Engagement via Anonymous Social Media in an Academic Library

This article presents results of a study of library-related posts on Yik Yak, a former social media app, and questions received via more traditional library-maintained virtual reference service platforms—namely, chat/instant messaging, SMS/text messaging, email, and LibAnswers' Query Spy—at College of Charleston's Addlestone Library. Based on an analysis of the results, suggestions are made for using social media tools similar to Yik Yak as a tool for interacting with patrons in academic library settings, specifically as a means to gather feedback about the library and to provide basic reference services.     

Portfolio analysis in the planning of higher education

It has recently been suggested that “portfolio analysis” has a role to play in the strategic planning of institutions of higher education. This article examines this proposition and finds it to be broadly correct. The article discusses the adaptation of the technique to the current context and then describes its application to data from a university.     

The District and Charter Sectors of American K–12 Education: Pros and Cons

This article probes ways in which the school-choice marketplace as it developed via chartering has not worked as well in practice as many had hoped. It includes reflection on the profoundly different operating principles and theories of action that separate the district and charter sectors in their pure forms. It also offers market-strengthening suggestions that blend the 2 approaches, organizing them under 10 categories.     

Reference books and computerized information services: partners in librarianship

As a basis for thoughts on the roles of reference books and computerized information services in general, a comparison is made of the value to medical libraries of a comprehensive reference tool (the new dual media publication Biomedical Research in Progress) and a comprehensive information center file (the Smithsonian Science Information Exchange, the national resource for information on research in progress). It is concluded that a detailed reference tool which is physically present for library users has several advantages, in particular the provision of both detailed and comprehensive retrieval of all biomedical research information at substantially less annual cost and with faster access time than is possible with comparable questions put to an information center. On the other hand, the information center is able to provide more up-to-date material in more flexible combinations. The recommendation is made that medical libraries avoid treating the comprehensive reference tool and the computerized information file as alternatives and instead view both as necessary and complementary to each other.     

Validity of SenseWear® Armband v5.2 and v2.2 for estimating energy expenditure

We compared SenseWear Armband versions (v) 2.2 and 5.2 for estimating energy expenditure in healthy adults. Thirty-four adults (26 women), 30.1 ± 8.7 years old, performed two trials that included light-, moderate- and vigorous-intensity activities: (1) structured routine: seven activities performed for 8-min each, with 4-min of rest between activities; (2) semi-structured routine: 12 activities performed for 5-min each, with no rest between activities. Energy expenditure was measured by indirect calorimetry and predicted using SenseWear v2.2 and v5.2. Compared to indirect calorimetry (297.8 ± 54.2 kcal), the total energy expenditure was overestimated (P < 0.05) by both SenseWear v2.2 (355.6 ± 64.3 kcal) and v5.2 (342.6 ± 63.8 kcal) during the structured routine. During the semi-structured routine, the total energy expenditure for SenseWear v5.2 (275.2 ± 63.0 kcal) was not different than indirect calorimetry (262.8 ± 52.9 kcal), and both were lower (P < 0.05) than v2.2 (312.2 ± 74.5 kcal). The average mean absolute per cent error was lower for the SenseWear v5.2 than for v2.2 (P < 0.001). SenseWear v5.2 improved energy expenditure estimation for some activities (sweeping, loading/unloading boxes, walking), but produced larger errors for others (cycling, rowing). Although both algorithms overestimated energy expenditure as well as time spent in moderate-intensity physical activity (P < 0.05), v5.2 offered better estimates than v2.2.