2,809 research outputs found

    Connecting with the Y Generation: an analysis of factors associated with the academic performance of foundation IS students

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    [Abstract]: A strategy to overcome challenges associated with teaching a foundation Information Systems (IS) course to large cohorts of Business students has been highly successful. To further refine the strategy, a survey was conducted to better understand attitudes and computer experience of the students. This study revealed that factors such as gender, age, study mode, type of secondary school attended, level of previous computing studies, perceived knowledge, frequency of use and attitudes towards using computers did not predict academic performance. Academic performance and characteristics of students belonging to the Y Generation were also compared with those of the Older Generation. Differences between these generations were found to exist in relation to perceived knowledge, level of previous computing studies, and experience of formal computing studies. It is imperative that educators be aware of the characteristics of the growing Y Generation students. This research has raised critical curriculum issues for the development of foundation IS pedagogy

    Flexural fatigue performance of CFRP prestressed concrete poles

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    Carbon fibre reinforced polymer (CFRP) prestressed concrete poles offer a durable, light-weight alternative to conventional steel-reinforced or prestressed concrete poles. In particular, the corrosion resistance of the CFRP tendons can result in lower maintenance costs and a reduction in the required concrete cover. For lighting poles used in pedestrian or low-trafficked areas, wind loading represents a dominant load case. The wind acts as a transient force and can blow from any direction. It is therefore of interest to investigate how CFRP prestressed lighting poles perform under repeated cyclic loads and/or load reversals. Experiments were carried out on pole sections tested horizontally. These included a static control test and a conventional fatigue test where a cyclic load was applied in a downwards direction for 2 million cycles. Three further fatigue tests where the load direction changed, either after a defined number of cycles or within a load cycle, were also conducted. It was found that all the poles performed adequately for 1–2 million cycles of loading and that the majority of any deflection increases occurred within the first 50,000 cycles. It is believed that repeated cyclic loading may have increased the tendon debonding at the crack locations. Localised debonding potentially relieves the stress in the outermost tendon layer which delays the onset of failure and allows the inner tendon layers to take up further stress thus leading to a higher load carrying capacity. Loading orientation reversal from a downwards to an upwards direction within a loading cycle did not result in a greater stiffness degradation when compared to the other fatigue tests. The initial findings suggest that in-service cyclic loading and load reversals will not be detrimental to the performance of CFRP prestressed concrete poles. This is the accepted version of an original publication available here: http://multi-science.metapress.com/content/w842084116q73104/?genre=article&id=doi%3a10.1260%2f1369-4332.15.4.57

    Formulation and antibacterial properties of clay mineral-tetracycline and -doxycycline composites

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    Clay minerals have been used as adsorbents for decades but research into their use within healthcare as drug-carriers and modified drug release materials is an increasingly common area of interest. In current clinical practice the management of acute bacterial skin and skin-structure infections (ABSSSIs) requires patients to take systemic antibacterial treatment due to a lack of appropriate topical options. In this research tetracycline (TC) and doxycycline (DC) were adsorbed onto a range of clay minerals (kaolinite, montmorillonite, acid-activated montmorillonite, Laponite® RD and Laponite® XL21) to evaluate their potential as materials for the delivery of these antibiotics to infected wounds. A dispersion pH that favoured the zwitterionic form of the antibiotic molecules was shown to favour adsorption onto the clay minerals. FTIR and pXRD showed that positively charged groups on the antibiotic molecules interacted with the negatively charged clay mineral surface, whilst negatively charged groups on the antibiotic molecules could interact with the positively charged edge-sites of the clay minerals. Swelling clays such as the two Laponites® were able to adsorb much more TC and DC due to their structure and chemistry. The clay minerals alone did not have any antibacterial effects against Staphylococcus epidermidis, Cutibacterium acnes, and Pseudomonas aeruginosa. Antibiotic containing composites successfully released TC and DC, exhibiting activity against the three bacterial strains proportional to the antibiotic-loading on the composites. This research demonstrates the ability of these clay minerals to deliver TC and DC against common skin pathogens and their potential for future development towards clinical applications

    Lyophilised Biopolymer-Clay Hydrogels for Drug Delivery

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    Clays have previously demonstrated potential as drug delivery carriers for the extended release of a variety of drugs. The objective of this study was to develop and characterise drug-containing clays in combination with natural hydrogels for the preparation of lyophilised xerogels. Sulfathiazole (STH) (a hydrophobic model drug) was intercalated within the interlayer spaces of Laponite® RDS (LAP RDS) or refined montmorillonite (MMT) and then mixed with either carageenen 812 (CAR 812) or hydrohydroxy ethyl cellulose (HEC) hydrogels prior to lyophilisation. The resulting xerogels were characterised visually, using differential scanning calorimetry (DSC) and with scanning electron microscopy (SEM). Optimal geo-polymeric wafers contained 1.5% W/W CAR 812 with 2% LAP RDSand 1% W/W intercalated STH. DSC and SEM results indicated the amorphous form of STH was intercalated inLAP RDS within theleafy structure of CAR 812. This xerogel hydrated up to1700% within 40 minutes and released the STH by Higuchikinetic model. Keywords: Polymer; Clay, Intercalation, Xerogel, Wound delivery, Amorphous, Physicochemical characterisation, Polymers, hydrogel, drug delivery, lyophilised wafer

    Consideration of Human-Centered Emotional Design and Cultural Strategy in Urban Regeneration in China

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    Many renovations of former industrial sites in China have failed to respond to the different contexts of location within their design. Resulting from an international funded research project, this paper considers Human-Centred Emotional Design and cultural strategy as urban renovation tools that can attract capital, mark the city as a distinctive brand and encourage interaction and sensual engagement from citizens. This paper pinpoints the project’s initial discoveries and captures a range of personal narratives reflecting the real experiences of Chinese people. The findings unlock potential opportunities for culturally coherent regeneration strategies

    Driving renovation: A comparative research project in urban regeneration across cities in China

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    Post-industrial sites in Chinese cities are being redeveloped as catalysts for urban regeneration, often tuning into the creative cultures of these cities to provide platforms for creative enterprises to flourish. The success of these projects in driving the development of China’s creative economy, however, has led to many imitative redevelopment projects, creating a blueprint for the format of industrial zones and cultural parks in cities. Many recent urban renewal projects have placed great emphasis on commercial and practical aspects of implementation and creative practice but have failed to respond to the different contexts of each location within the design and planning, and therefore performed poorly in providing opportunities for developing local enterprise or addressing social welfare needs. A recent funded research project has been conducted by an international cross-disciplinary team that is seeking different opportunities for developing relevant creative industries while retaining cultural and industrial heritage. The project focuses on regional culture and, with use of new methodologies, studies its impact on urban regeneration. By working with participants who are both site users and developers, this paper explores the research conducted so far and offers initial findings. Findings include that regenerations should integrate the characteristics of historic industrial sites with the new requirements of the creative industries. The major stakeholders whose impact on urban regenerations have also been identified and the most important factors for successful transformations from heavy to creative industry are discovered to be local geography, history, culture, politics, economy and ethnography

    Reinventing the Image of Cities Using the Element of Water International Case Studies of Waterfront Urban Developments

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    The relationship between human settlements and water has been complex and multidimensional throughout history. However, the urban history of cities is intrinsically related to their interaction with the element of water. The element of water enables spectacles to occur. People gravitate towards the water’s edge, socio-cultural life improves, new spaces are discovered, and, in turn, the city is reconciled with the waterfront (natural harbour/river) by invigorating the civic realm via the activation of public space(s). The conference paper focuses on exploring four different international urban master-planning projects (Casablanca in Morocco, Hong Kong Special Administrative Region in China, Liverpool in the United Kingdom and Shanghai in China), which utilise the element of water (natural harbour/river) as a means of reinvigorating major district(s) within city centres via the process of reconciliation, and in turn, reinventing the image of the city. The main aim of the research team is to understand the dynamics behind these urban master-plan projects and to highlight the new aspects of the process of reevaluation/re-invention of the city’s identity and urban character through reconnecting to the water’s edge (natural harbour/river) and regenerating the waterfront. In summary, this paper is an attempt to express the significance of integrating water as a unified natural element and as an essential landscape feature within urban master-planning visions leading to a more sustainable future for our cities globally, as well as to highlight the new urban design aspects of the process of re-evaluation and re-invention of the city’s identity and urban character. The main drive of the paper is that emphasising links to the element of water should be considered a key lead urban design factor within the regeneration of cities internationally

    TOPCAT and Gaia

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    TOPCAT, and its command line counterpart STILTS, are powerful tools for working with large source catalogues. ESA's Gaia mission, most recently with its second data release, is producing source catalogues of unprecedented quality for more than a billion sources. This paper presents some examples of how TOPCAT and STILTS can be used for analysis of Gaia data.Comment: 4 pages, 2 figures; to appear in the Proceedings of ADASS 2018, Astronomical Society of the Pacific (ASP) Conference Serie
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