Pre-Service School Librarians\u27 Perceptions of Research Librarians\u27 Perceptions of Research Pedagogy: An Exploratory Study

This article is an exploratory study of graduate-level instruction on research designs and methods for pre-service school librarians (PSSLs). Using a focus group of one cohort of PSSLs, we examine students\u27 perceptions of understanding research methods, course content and delivery, and self-reported application of new knowledge from a sequence of two graduate research courses in a Master\u27s degree program. Findings indicate increased appreciation and understanding of the research process among participants and the ability to integrate the research findings of others into their own practice, while also indicating little or no confidence in their own abilities to conduct research in their new positions as school librarians or report on their findings to others. Findings point to opportunities to improve instruction through intellectual accessibility, focusing on action research for the practitioner, and scaffolding learning throughout the graduate program

Dimensionality dependent electronic structure of the exfoliated van der Waals antiferromagnet NiPS3_3

Resonant Inelastic X-ray Scattering (RIXS) was used to measure the local electronic structure in few-layer exfoliated flakes of the van der Waals antiferromagnet NiPS$_3$. The resulting spectra show a systematic softening and broadening of $NiS_6$ multiplet excitations with decreasing layer count from the bulk to three atomic layers (3L). These trends are driven by a decrease in the transition metal-ligand and ligand-ligand hopping integrals, and in the charge-transfer energy: $\Delta$ = 0.60 eV in the bulk and 0.22 eV in 3L NiPS$_3$. Relevant intralayer magnetic exchange integrals computed from the electronic parameters exhibit a systematic decrease in the average interaction strength with thickness and place 2D NiPS$_3$ close to the phase boundary between stripy and spiral antiferromagnetic order, which may explain the apparent vanishing of long-range order in the 2D limit. This study explicitly demonstrates the influence of $inter$layer electronic interactions on $intra$layer ones in insulating magnets. As a consequence, the magnetic Hamiltonian in few-layer insulating magnets can be significantly different from that in the bulk.Comment: 5 pages, 4 figures; additional 9 pages and 13 figures of supplementary informatio

Querying a Bioinformatic Data Sources Registry with Concept Lattices

ISSN 0302-9743 (Print) 1611-3349 (Online) ISBN 978-3-540-27783-5International audienceBioinformatic data sources available on the web are multiple and heterogenous. The lack of documentation and the difficulty of interaction with these data banks require users competence in both informatics and biological fields for an optimal use of sources contents that remain rather under exploited. In this paper we present an approach based on formal concept analysis to classify and search relevant bioinformatic data sources for a given user query. It consists in building the concept lattice from the binary relation between bioinformatic data sources and their associated metadata. The concept built from a given user query is then merged into the concept lattice. The result is given by the extraction of the set of sources belonging to the extents of the query concept subsumers in the resulting concept lattice. The sources ranking is given by the concept specificity order in the concept lattice. An improvement of the approach consists in automatic refinement of the query thanks to domain ontologies. Two forms of refinement are possible by generalisation and by specialisation

El Procesamiento y la Calidad de Alimentos

Food processing cannot be perceived without considering the quality of the desired products. This involves the transformation of the raw material into food products of different categories (semi-finished or ready-to-eat products) using various techniques, from the simplest to the most sophisticated. The simplest techniques, such as sun-drying or direct heating have been used since ancient times with the primary goal to achieve long shelf-life or a tasty food with the quality characteristics of being innocuous and nutritious. Modern technology has maintained the same goals; however, the level of complexity and requirement have changed owing to a better understanding of processing methods. The development of technologies directly or indirectly related to food production has also led to quality improvement. Since the first experiment of Nicolás Appert in 1809 to sterilise food in a glass container, and the first tin container developed by Peter Durand in 1810, the canning industry has undergone an extraordinary transformation, from improvement of packaging materials to the introduction of high technology in process control, making use of information technology, as well as in the organisation of food production to process the raw material. Furthermore, emerging technologies ...El procesamiento de alimentos es inconcebible sin la consideración de la calidad de los productos que se quiere obtener. Esto involucra la transformación de la materia prima en productos alimenticios de distintas categorías (productos semi-elaborados o productos listos para el consumo), usando diversas técnicas, desde las más simples hasta las más sofisticadas. Las técnicas más simples, tales como el secado al sol o la cocción a fuego directo han sido usadas desde tiempos remotos con el objetivo primordial de lograr un alimento de larga vida o de agradable sabor y con características de calidad inocua y nutritiva. La tecnología moderna sigue con las mismas metas, aunque el nivel de sofisticación como también de exigencia han cambiado gracias a una mejor comprensión de los procesos. El desarrollo de las tecnologías de uso directo o indirecto en la producción de alimentos ha permitido mejorar su calidad. Desde la presentación del primer producto alimenticio esterilizado en su envase de vidrio por Nicolás Appert en 1809 y el primer envase de hojalata desarrollado por Peter Durand en 1810, la industria conservera ha experimentado un desarrollo vertiginoso. Esto ha pasado desde el mejoramiento de los materiales de envase hasta la utilización de alta tecnología, tanto en los métodos de control de procesos, haciendo uso de la tecnología de información, como también en el manejo de los mismos procesos productivos para la transformación y tratamiento de la materia prima. Además, se están integrando cada vez más las tecnologías emergentes ..

Do inattention and hyperactivity symptoms equal scholastic impairment? evidence from three European cohorts

Background Attention Deficit/Hyperactivity Disorder (ADHD) affects many children, adolescents, and adults and is associated with a number of impairments. Poor academic performance is related to ADHD in clinical samples. However, it is unclear to what extent core ADHD symptoms and scholastic impairment are related in non-referred school-aged children. Methods Data come from three population-based cohorts from Sweden, Denmark, and Finland, which are part of the Nordic Network on ADHD. The combined sample size was 13,087 children who were studied at ages 7–8 or 10–12 years. Teachers rated children on inattention and hyperactivity symptoms and reported children's scholastic performance on basic skills. Results There was a significant association in all cohorts between core ADHD symptoms and scholastic impairment in reading, writing, and mathematics. Particularly, inattention was related to a two to tenfold increase in scholastic impairment. Prevalence of hyperactivity symptoms was similar across the three cohorts, but inattention was lowest among children from the Finnish cohort, after stratification on living conditions. Conclusion These results extend previous reports of scholastic impairment among children with clinically diagnosed ADHD to non-referred population samples from three European countries. Surveillance policies should be implemented in school systems to catch children in need of behavioral or scholastic support early