University of Lincoln

About: University of Lincoln is a education organization based out in Lincoln, Lincolnshire, United Kingdom. It is known for research contribution in the topics: Population & Context (language use). The organization has 2341 authors who have published 7025 publications receiving 124797 citations.

The use and value of Bernstein’s work in studying (in)equalities in undergraduate social science education

Abstract: This paper illustrates how critical use of Basil Bernstein's theory illuminates the mechanisms by which university knowledge, curriculum and pedagogy both reproduce and interrupt social inequalities. To this end, empirical examples are selected from the findings of the ESRC-funded project ‘Pedagogic Quality and Inequality in University First Degrees' (RES-062-23-1438, November 2008–January 2012). The project investigated sociology-related social science degrees in four social science departments in universities in different positions in influential UK higher education league tables. A Bernsteinian lens throws fresh light on how university education might contribute to a more egalitarian society.

Learning movement primitive libraries through probabilistic segmentation

Abstract: Movement primitives are a well established approach for encoding and executing movements. While the primitives themselves have been extensively researched, the concept of movement primitive libraries has not received similar attention. Libraries of movement primitives represent the skill set of an agent. Primitives can be queried and sequenced in order to solve specific tasks. The goal of this work is to segment unlabeled demonstrations into a representative set of primitives. Our proposed method differs from current approaches by taking advantage of the often neglected, mutual dependencies between the segments contained in the demonstrations and the primitives to be encoded. By exploiting this mutual dependency, we show that we can improve both the segmentation and the movement primitive library. Based on probabilistic inference our novel approach segments the demonstrations while learning a probabilistic representation of movement primitives. We demonstrate our method on two real robot applications. First, the robot segments sequences of different letters into a library, explaining the observed trajectories. Second, the robot segments demonstrations of a chair assembly task into a movement primitive library. The library is subsequently used to assemble the chair in an order not present in the demonstrations.

Changes in Biogenic Amines in Herring Stored under Modified Atmosphere and Vacuum Pack

Abstract: Changes in 10 biogenic amines during the storage of herring in ice, in boxes without ice, in a modified atmosphere, and in vacuum packaging were investigated. The highest level of histamine was obtained from herring stored in boxes without ice, followed by herring stored in VP, ice, and MAP. Putrescine and cadaverine contents increased during the storage of herring held in ice, reaching levels of 4.0 mg and 23.7 mg/100g muscles at 16 d of storage, respectively. No significant differences were found in histamine concentrations within the treatments during the early stages of the storage period. However, there was a significant difference (P < 0.05) towards the end of the storage period in all treatments except between VP and ice.

Electron injection and scaffold effects in perovskite solar cells

Abstract: In spite of the impressive efficiencies reported for perovskite solar cells (PSCs), key aspects of their working principles, such as electron injection at the contacts or the suitability of the utilization of a specific scaffold layer, are not yet fully understood. Increasingly complex scaffolds attained by the sequential deposition of TiO2 and SiO2 mesoporous layers onto transparent conducting substrates are used to perform a systematic characterization of both the injection process at the electron selective contact and the scaffold effect in PSCs. By forcing multiple electron injection processes at a controlled sequence of perovskite–TiO2 interfaces before extraction, interfacial injection effects are magnified and hence characterized in detail. An anomalous injection behavior is observed, the fingerprint of which is the presence of significant inductive loops in the impedance spectra with a magnitude that correlates with the number of interfaces in the scaffold. Analysis of the resistive and capacitive behavior of the impedance spectra indicates that the scaffolds could hinder ion migration, with positive consequences such as lowering the recombination rate and implications for the current–potential curve hysteresis. Our results suggest that an appropriate balance between these advantageous effects and the unavoidable charge transport resistive losses introduced by the scaffolds will help in the optimization of PSC performance.

Development and validation of a psychometric tool for assessing impulsivity in the domestic dog (Canis familiaris)

Abstract: Impulsivity is a trait that has received much attention in humans, but in dogs impulsivity is illdefined,and previous studies have tended to focus on aggression, rather than its more pervasive effect on behavior The objective of this study was to develop a valid psychometric assessment tool of impulsivity in dogs An owner report questionnaire was constructed using items generated by a survey of experts Five hundred and seventy one dog owners returned the questionnaire and data were subjected to principal components analysis, revealing a three-factor structure: Factor 1: Behavioral Regulation, Factor 2: Aggression & Response to Novelty, and Factor 3: Responsiveness The resulting Dog Impulsivity Assessment Scale comprised of 18 items demonstrated evidence of reliability and validity