1,574 research outputs found

    Methodology for evaluating the safety level of current accepted design solutions for limiting fire spread between buildings

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    External fire spread between buildings is internationally considered as a major concern for buildings in dense urban environments. While design guidelines differ between countries, the fundamental methods currently used for limiting the risk of fire spread between buildings are generally limited to specifying the minimum required separation distance for a given unprotected façade area, or conversely, limiting the maximum allowable unprotected façade area for a given separation distance. The safety level associated with the current design guidelines is however unknown, making the implementation of innovative, safer and more cost-effective design solutions difficult. In order to assess the safety target implicitly incorporated in currently accepted design solutions, a methodology is developed for evaluating the annual probability of reaching unacceptable radiation intensities at the opposite façade. As a case study, the methodology is applied to a design which is in agreement with the current UK requirements specified in BR 187. This case study exposes inconsistencies in the current design guidelines, indicating the need for developing explicit safety targets

    Inter-CubeSat Communication with V-band "Bull's eye" antenna

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    We present the study of a simple communication scenario between two CubeSats using a V-band “Bull's eye” antenna that we designed for this purpose. The return loss of the antenna has a -10dB bandwidth of 0.7 GHz and a gain of 15.4dBi at 60 GHz. Moreover, the low-profile shape makes it easily integrable in a CubeSat chassis. The communication scenario study shows that, using 0.01W VubiQ modules and V-band “Bull’s eye” antennas, CubeSats can efficiently transmit data within a 500 MHz bandwidth and with a 10-6 BER while being separated by up to 98m, under ideal conditions, or 50m under worst case operating conditions (5° pointing misalignment in E- and H-plane of the antenna, and 5° polarisation misalignment)

    Hybridization of optical plasmonics with terahertz metamaterials to create multi-spectral filters

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    Multi-spectral imaging systems typically require the cumbersome integration of disparate filtering materials in order to work simultaneously in multiple spectral regions. We show for the first time how a single nano-patterned metal film can be used to filter multi-spectral content from the visible, near infrared and terahertz bands by hybridizing plasmonics and metamaterials. Plasmonic structures are well-suited to the visible band owing to the resonant dielectric properties of metals, whereas metamaterials are preferable at terahertz frequencies where metal conductivity is high. We present the simulated and experimental characteristics of our new hybrid synthetic multi-spectral material filters and demonstrate the independence of the metamaterial and plasmonic responses with respect to each other

    On the road to Enlighten-ment: establishing an institutional repository service for the University of Glasgow

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    Purpose – The purpose of this paper is to chart the development and growth of open access and institutional repositories at the University of Glasgow, Scotland from initial work in 2001 to the University's recently launched service, Enlighten. The University of Glasgow is a signatory to the Scottish Open Access Declaration and recently released a statement on Open Access.<p></p> Design/methodology/approach – The study will focus on the key lessons learned through a twin track approach of advocacy and service development during the DAEDALUS Project (2002-2005) and the transition of that work to a University service called Enlighten. This service includes a repository for published and peer-reviewed papers which has now had over 2 million hits and over 270,000 PDF downloads since it was established in February 2004.<p></p> Findings – The paper reveals the lessons learned by the Library and the project team. It also identifies the range of issues which must be addressed in the successful implementation of a repository and its transition to a production service. These include the development of content policies, copyright clearance and the cultural change necessary to populate a repository service. These challenges have and continue to be addressed by the repository team at the University of Glasgow.<p></p> Originality/value – This paper provides details of the lessons learned in the practical experience of setting up an institutional repository and ensuring its transition to a full and supported University service. It will be of particular interest to institutions implementing a repository or running a pilot service.<p></p&gt

    Boldfaced Terms and Their Effects on Student Learning

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    Every published introductory psychology textbook includes boldfaced terms throughout the chapters. These boldfaced terms are theoretically included to help students learn the material. Are they really beneficial for student learning? An experimental/control group designed study was conducted to answer this question. Volunteers were provided with a chapter excerpt. The experimental group received the excerpt with no boldfaced terms included (the bold type had been removed), whereas the control group received the excerpt as it normally appeared in the textbook, boldfaced terms included. Both groups were quizzed using a 10-item multiple-choice quiz. Statistical analyses showed that those who studied the excerpt with boldfaced terms included scored significantly higher, F(1, 180) = 5.68; p = .02; partial ç2= .03, with an effect size of .32. This study and the resulting conclusions provide support for the inclusion of boldfaced terms in textbooks to aid student study and learning

    Are work-integrated learning (WIL) students better equipped psychologically for work post-graduation than their non-work-integrated learning peers? Some initial findings from a UK university

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    Work-integrated learning (WIL) provides an opportunity to develop the skills, knowledge, competence, and experience, which increase employability and lead to more satisfying careers. Research indicates that WIL results in improved academic- and occupationally-related outcomes. However, there is a paucity of quantitative research examining the psychological impact of WIL. The study aimed to determine whether students who pursue WIL in the UK, differ significantly in terms of self-concept, self-efficacy, hope, study skills, motivation, and procrastination than students who have not participated in WIL. The methodology used a cross-sectional analysis of a large sample (n=716) of undergraduate students at the University of Huddersfield, UK. Results showed significant differences predominantly centred upon measures which pertain to students’ confidence in setting and attaining goals. The increased hope and confidence in goal attainment suggest that gaining work experience perhaps enhances the ability to set and achieve goals once in the work force. (Asia-Pacific Journal of Cooperative Education, 2013, 14(2), 117-125) Keywords: Employability; Psychological factors; Work-integrated learning; Placement; Confidence; Self estee

    Effects of localized application of retinoic acid on Xenopus laevis development

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    In order to more accurately determine the mechanism by which retinoic acid causes embryonic defects, we have developed a simple method of locally applying retinoic acid rather than immersing the whole embryo in retinoic acid solutions. Retinoic acid was suspended in corn oil and then injected between the surface and the deep ectodermal layers of an early gastrula Xenopus embryo. When droplets containing retinoic acid were injected into the presumptive head region, the embryos exhibited inhibited development of anterior structures near the injection site. Development of the eye, cement gland, hatching gland, olfactory pits, and expression of engrailed protein were all disrupted near the injection site. Inhibited development of anterior structures was far greater on the injected side of the embryo than on the uninjected side. The retinoic acid droplet did not cause an anterior shift of structures on the injected side relative to the uninjected side. These experiments suggest that retinoic acid does not cause global respecification of axial level in the head, but rather suppresses development of anterior structures. Retinoic acid injected into presumptive trunk regions had no discernible effect

    Syntheses of some silicate mineral structures containing MnÂłâș ;Groundwater requiring protective landscaping\ua0: model trials at Dalrymple, North Queensland ;\ua0Natural supply of phosphorus from basalt controlled by rejuvenated landscapes along the Burdekin River, Queensland

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    Contents1. Syntheses of some silicate mineral structures containing Mn3+D.J. DRYSDALE ---\ua0P.1-52. Groundwater requiring protective landscaping: model trials at Dalrymple, North QueenslandE.J. HEIDECKER ---\ua0P.6-183. Natural supply of phosphorus from basalt controlled by rejuvenated landscapes along the Burdekin River, QueenslandE.J. HEIDECKER ---\ua0P.19-2

    EPrints Funding Data and Workflow

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    This short paper provides details of the addition of new fields for funder and award data and the creation of a new Funding option in the deposit workflow

    EPrints Funding Data and Workflow

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    This short paper provides details of the addition of new fields for funder and award data and the creation of a new Funding option in the deposit workflow
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