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1 – 10 of 28Alan Richardson, Kathryn A. Coventry, Alan M. Forster and Chris Jamison
Deterioration in natural stone is associated with many decay mechanisms and often the inherent composition of the materials themselves. Sandstone varies considerably but they all…
Abstract
Purpose
Deterioration in natural stone is associated with many decay mechanisms and often the inherent composition of the materials themselves. Sandstone varies considerably but they all require a cementing matrix to bind amongst others, the silica (SiO2) particles together (Reading, 1989). In calcareous sandstones and limestones this binding matrix is principally calcium carbonate based (Muir, 2006; Reading, 1989; McMillan et al., 1999) in the form of calcite (CaCO3). Friable sandstone substrates and stones suffering from “surface dissolution” or disaggregation (Muir, 2006; Smith et al., 1992) have been traditionally consolidated utilising a host of chemical compounds that had, in many cases negative effects on their long-term performance (Muir, 2006). A principle issue amongst many was moisture entrapment and irreversibility of the consolidants adopted. The paper aims to discuss these issues.
Design/methodology/approach
This paper investigates the effect of microbial induced calcite precipitation (MICP) as a natural treatment for the conservation of historic natural stone substrates. Sporosarcina pasteurii has been proven as a bacterium that can perform MICP effectively in extreme conditions making it the preferred bacterium for the MICP process within this study. Surface treatment experiments were analysed by measuring the mass increase and surface changes using scanning electron microscopy (SEM).
Findings
The surface treatments showed a noticeable mass increase and observable deposition when viewed using a SEM microscope. Bio cementation of loose sand particles was observed and the degree of cementation was determined using a Moh's hardness test.
Research limitations/implications
Recommendations for further work to improve this study are: use an increased Sporosarcina pasteurii cell optical density which would provide a greater calcite output. Carry out a paired comparison initial surface absorption test (BS 1881: Part 208, 1996 or ASTM C 1585-04, 2004). To be carried out on untreated control and MICP samples which would determine the pore blocking effect and surface repair capability of the treated samples.
Practical implications
A method for obtaining optimal results in terms of surface treatment would involve reducing the time between mixing and application, this would require having the two reaction constituents mixed only seconds before use. Using a late mix spray application system has the potential to allow the two mixtures to combine in the spray nozzle whilst exiting the apparatus.
Originality/value
This paper investigates a safe, natural process for stone repair.
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Emma Wolverson, Leanne Hague, Juniper West, Bonnie Teague, Christopher Fox, Linda Birt, Ruth Mills, Tom Rhodes, Kathryn Sams and Esme Moniz-Cook
Recovery Colleges were developed to support the recovery of people with mental health difficulties through courses co-produced by professionals and people with lived experience…
Abstract
Purpose
Recovery Colleges were developed to support the recovery of people with mental health difficulties through courses co-produced by professionals and people with lived experience. This study aims to examine the use of Recovery Colleges to support people with dementia.
Design/methodology/approach
A survey was circulated to UK Recovery College and memory service staff, exploring provision, delivery and attendance of dementia courses. Open responses provided insight into participant views about recovery in post-diagnostic support and the practicalities of running dementia courses.
Findings
A total of 51 Recovery College staff and 210 memory service staff completed the survey. Twelve Recovery College dementia courses were identified across the UK. Three categories emerged from the qualitative data: post-diagnostic support, recovery in the context of dementia, challenges and areas of innovation.
Originality/value
This study highlights the benefits and practicalities of running Recovery College courses with people with dementia. Peer-to-peer learning was seen as valuable in post-diagnostic support but opinions were divided about the term recovery in dementia.
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A distinction must be drawn between a dismissal on the one hand, and on the other a repudiation of a contract of employment as a result of a breach of a fundamental term of that…
Abstract
A distinction must be drawn between a dismissal on the one hand, and on the other a repudiation of a contract of employment as a result of a breach of a fundamental term of that contract. When such a repudiation has been accepted by the innocent party then a termination of employment takes place. Such termination does not constitute dismissal (see London v. James Laidlaw & Sons Ltd (1974) IRLR 136 and Gannon v. J. C. Firth (1976) IRLR 415 EAT).
Leanne Weber, Jarrett Blaustein, Kathryn Benier, Rebecca Wickes and Diana Johns
Bridget Penhale, Alison Brammer, Pete Morgan, Paul Kingston and Michael Preston-Shoot
Liz Hayes, Clare Hopkinson and Alan Gordon Taylor
The purpose of this paper is to illustrate the authors’ multiple subjectivities, in research and in practice which are ever shifting in context with each other. The authors…
Abstract
Purpose
The purpose of this paper is to illustrate the authors’ multiple subjectivities, in research and in practice which are ever shifting in context with each other. The authors present richness of understanding which can be revealed when researchers eschew consensus, certainty and easy solutions. The authors aim to show that plurality of ontological and epistemological approaches combined with diversity in understanding and subjective experience is necessary in qualitative research in organisations.
Design/methodology/approach
The authors take a playful and incomplete narrative approach in their critical reflection on the subjectivities being silenced or ignored in organisations and in academia. The authors present an unsettling and ambiguous read but the aim is to question the formulaic, linear, simplistic solutions and structures evident in organisations and academia that silence uncertainty, emotions, voice and creativity through standardisation and the rhetoric of collaboration for performance enhancement. This process the authors have termed philosophical violence.
Findings
The authors identify philosophical violence as a dominant theme in qualitative research, in organisational practice and within academia. In contrast, the authors’ embodied subjectivities preclude the reaching agreement or consensus too quickly, or indeed, at all. The authors’ embodied struggles add to the understanding of ambiguity, difference, critical reflexivity and understanding, providing richness and accommodating diversity and paradox in the inquiries in the organisations.
Originality/value
The authors show the struggles as hopeful and the non-collaborative collaboration as a resource from which the authors can individually and jointly develop new understandings of working and thus survive the philosophical violence found in organisations and in research. Honouring subjectivities is essential for rich qualitative research in organisations.
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Edward P. Lazear, Kathryn Shaw, Grant Hayes and James Jedras
Wages have been spreading out across workers over time – or in other words, the 90th/50th wage ratio has risen over time. A key question is, has the productivity distribution also…
Abstract
Wages have been spreading out across workers over time – or in other words, the 90th/50th wage ratio has risen over time. A key question is, has the productivity distribution also spread out across worker skill levels over time? Using our calculations of productivity by skill level for the United States, we show that the distributions of both wages and productivity have spread out over time, as the right tail lengthens for both. We add Organization for Economic Co-Operation and Development (OECD) countries, showing that the wage–productivity correlation exists, such that gains in aggregate productivity, or GDP per person, have resulted in higher wages for workers at the top and bottom of the wage distribution. However, across countries, those workers in the upper-income ranks have seen their wages rise the most over time. The most likely international factor explaining these wage increases is the skill-biased technological change of the digital revolution. The new artificial intelligence (AI) revolution that has just begun seems to be having similar skill-biased effects on wages. But this current AI, called “supervised learning,” is relatively similar to past technological change. The AI of the distant future will be “unsupervised learning,” and it could eventually have an effect on the jobs of the most highly skilled.
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Abstract
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In considering my academic history as a professor both in marketing and management, I hope to demonstrate that it is possible to research challenging and interesting topics in a…
Abstract
Purpose
In considering my academic history as a professor both in marketing and management, I hope to demonstrate that it is possible to research challenging and interesting topics in a variety of guises.
Design/methodology/approach
The presentation is primarily chronological but also, to some degree, selective. I have focused on my research activities but not forgotten the importance, at least to me, of both academic administration and indeed a broader set of interests in more general terms.
Findings
While there is inevitably a significant degree of path dependency in my academic career, I have also been quite keen to explore more broadly both the boundaries of my subjects and the application of various different research methods. I have been particularly fortunate to have worked with some excellent academic colleagues and stimulating doctoral students.
Research limitations/implications
I believe there are a twin set of implications for other academics; however, I would emphasise that there is no single right way. For me it has been important to pick topics which are of interest to others and at the same time try and demonstrate some distinctive value added in my approach.
Originality/value
I hope that those who are earlier in their career will take heart from two principles, one being to do one’s best to be in interesting places and the other to work closely with colleagues who have challenging and different perspectives.
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