55 research outputs found
Designing intelligent computer‐based simulations: A pragmatic approach
Get PDFThis paper examines the design of intelligent multimedia simulations. A case study is presented which uses an approach based in part on intelligent tutoring system design to integrate formative assessment into the learning of clinical decision‐making skills for nursing students. The approach advocated uses a modular design with an integrated intelligent agent within a multimedia simulation. The application was created using an object‐orientated programming language for the multimedia interface (Delphi) and a logic‐based interpreted language (Prolog) to create an expert assessment system. Domain knowledge is also encoded in a Windows help file reducing some of the complexity of the expert system. This approach offers a method for simplifying the production of an intelligent simulation system. The problems developing intelligent tutoring systems are examined and an argument is made for a practical approach to developing intelligent multimedia simulation systems
Using computer‐based tests for information science
Get PDFComputer‐based tests have been used extensively in the Department of Information Science at the University of Portsmouth, both for end‐of‐course examinations and continuous assessment. This paper details the use of computer‐based objective testing as an innovative technique for traditional assessment, and the separate problems of continuous computer‐aided assessment. Results from three years of research have led to plans for future developments within the department, and the paper provides a checklist of considerations regarded as crucial
A multidisciplinary combinatorial approach for tuning promising hydrogen storage materials towards automotive applications
No full textHyStorM is a multidisciplinary hydrogen-storage project aiming to synthesise and tune materials hydrogen storage properties for automotive applications. Firstly, unique high-throughput combinatorial thin-film technologies are used to screen materials' hydrogen storage properties. Then promising thin-film candidate compositions are synthesised and examined in the bulk. In this paper, we report on our results within the ternary compositions Mg-Ti-B and Ca-Ti-B. Primary screening of the Mg-Ti-B ternary identified a high capacity hotspot corresponding to Mg0.36Ti0.06B0.58, with 10.6 wt% H2 capacity. Partial reversibility has been observed for this material in the thin-film. Bulk Ti-doped Mg(BH4)2 composites show rehydrogenation to MgH2 under the conditions used. The synthesised thin-film Ca-Ti-B ternary showed only low hydrogen storage capacities. In the bulk, Ti-doping experiments on Ca(BH4)2 demonstrated reversible storage capacities up to 5.9 wt% H2. Further characterisation experiments are required to decipher the role of the Ti-dopant in these systems in both films and in the bulk
A course-oriented intelligent tutoring system with probability assessment
No full textMost Intelligent Tutoring Systems (ITSs) in the past have concentrated on
small domains and have been topic-oriented. They have tended to be non-extendable
prototypes and have neglected the expertise of human teachers.
It is argued here that a promising approach at this time is to design
course-oriented ITS shells which are based on the human teacher. Courses
using such shells could be used to take some of the load of first-time
delivery and assessment from teachers and lecturers, and leave them more
time for individual tutoring. [Continues.
A course-oriented intelligent tutoring system with probability assessment
Get PDFMost Intelligent Tutoring Systems (ITSs) in the past have concentrated on
small domains and have been topic-oriented. They have tended to be non-extendable
prototypes and have neglected the expertise of human teachers.
It is argued here that a promising approach at this time is to design
course-oriented ITS shells which are based on the human teacher. Courses
using such shells could be used to take some of the load of first-time
delivery and assessment from teachers and lecturers, and leave them more
time for individual tutoring. [Continues.
Understanding the structure of choline chloride/glycerol Deep Eutectic Solvents
No full textNeutron datasets from ISIS, RB 1410403 Abstract: The aim of this proposed work is to evaluate the effects of how the hydrogen-bonding networkspresent in glycerol change upon addition of choline chloride forming a Deep Eutectic Solvent(DES). This will be the first time that the liquid structure of DESs - important liquids within thegreen chemistry portfolio along-side ionic liquids etc - have been studied using total neutronscattering. The successful outcome of this study will lead to direct understanding of how the keyinteractions between the two components of a DES lead to the remarkable materials properties.That is, the formation of fluids with remarkable liquid ranges, large depression of melting points,and many of the features associated with ionic liquids such as conductivity and low volatility. Public release date: 30 July 2017 Principal Investigator: Professor John Holbrey Experimenter: Ms Caithlin White Experimenter: Mr Adam Turner Experimenter: Dr Tristan Youngs Local Contact: Dr Sam Callear DOI: 10.5286/ISIS.E.54815525 ISIS Experiment Number: RB1410403 Part Number: 1 Date of Experiment: 24 July 2014 Publisher: STFC ISIS Neutron and Muon Source Data format: RAW/Nexus Select the data format above to find out more about it. Data Citation The recommended format for citing this dataset in a research publication is as: [author], [date], [title], [publisher], [doi] For Example: Professor John Holbrey et al; (2014): Understanding the structure of choline chloride/glycerol Deep Eutectic Solvents, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.5481552
Food Security and the International Wheat Agreements
No full textThe paper examines the issues involved in reaching a workable international agreement on reserve stocks for wheat. The paper is divided into two parts. In the first part, there is an examination of past efforts to achieve greater food security through international wheat agreements and food aid and an evaluation of the extent to which they succeeded until 1969, when the pricing provisions of the agreement broke down. There is a survey of the institutions that were created following the World Food Conference in 1974, an examination of the issues that have prevented the successful conclusion of a new agreement in the 1970's, and a review of the direction of current negotiations. In part 2, the issue of wheat price stability is examined against the background of the objectives of the major participants in the international market. It is argued that the determination of appropriate measures to ensure world food security has been hampered by domestic agricultural objectives of the major trading nations. Even if agreement on a reserve stock could be reached, it is probable that a reserve stock alone would be inadequate to achieve price stabilization without some change in the trade policies of the major trading nations. Since it is unlikely that these policies will e completely abandoned, it is argues that an international code of conduct to limit their harmful effect is appropriate. The outlines of such a code are suggested
Food Security and the International Wheat Agreements
Get PDFThe paper examines the issues involved in reaching a workable international agreement on reserve stocks for wheat. The paper is divided into two parts. In the first part, there is an examination of past efforts to achieve greater food security through international wheat agreements and food aid and an evaluation of the extent to which they succeeded until 1969, when the pricing provisions of the agreement broke down. There is a survey of the institutions that were created following the World Food Conference in 1974, an examination of the issues that have prevented the successful conclusion of a new agreement in the 1970's, and a review of the direction of current negotiations. In part 2, the issue of wheat price stability is examined against the background of the objectives of the major participants in the international market. It is argued that the determination of appropriate measures to ensure world food security has been hampered by domestic agricultural objectives of the major trading nations. Even if agreement on a reserve stock could be reached, it is probable that a reserve stock alone would be inadequate to achieve price stabilization without some change in the trade policies of the major trading nations. Since it is unlikely that these policies will e completely abandoned, it is argues that an international code of conduct to limit their harmful effect is appropriate. The outlines of such a code are suggested
AnnAnn and AnnAnn.Net : Tools for Teaching Programming
No full textIt is difficult for a student to learn about programs and to understand the rational that went into the development of the parts that led to the whole. Tools for explaining this essentially dynamic process are limited and typically static in nature. This paper presents AnnAnn.Net, an animated code annotator which makes it possible to present the development of code to large groups or for self study. The tool is designed for ease of use by both lecturers and students. The technical and educational benefits of this approach are examined
Luminescence from mixtures of mercury vapour and nitrogen following pulsed excitation with resonance radiation
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