614 research outputs found

    On the Physical Conditions Under Which Coal Was Formed

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    Spatial disparities in SMEs productivity in England

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    Improving productivity is critical to increasing economic growth and prosperity in the long-run and a key objective for UK national, regional and local policy. However, a long tail of low productivity businesses and significant spatial variations in productivity characterise the UK economy. This report presents an analysis of the determinants of Small and Medium Sized Enterprise (SME) labour productivity, with a particular focus on how place and productivity interact. The analysis draws on data from the UK Government’s Longitudinal Small Business Survey (LSBS) for the years 2015 to 2017. It employs a multilevel regression analysis to understand determinants in enterprise labour productivity in different localities and regions and effectively account for the contextual environment. We applied multilevel analysis to capture the nested structure of our data, modelling a fixed-effects part (at firm level or level one) and a random-effects part at Local Enterprise Partnership (LEP) level (or level two). This allows for the separation of the role of firms’ determinants from LEP (sub-regional) effects. To the best of our knowledge, we are the first to apply multilevel analysis to the productivity of firms located in the UK. Regarding firm-level factors, the results show that microbusinesses and sole traders tend to have lower productivity. In contrast, business capabilities to develop and implement business plans, and obtain external finance, as well as receiving external advice in the previous year, positively contribute to productivity. The sector in which a business operates also matters with health and social work generally associated with lower productivity. Digital capabilities, internal to the SME, as well as some types of network membership contribute to higher productivity. Regarding ownership, after controlling for other factors, the results reveal that family businesses are not more or less productive than non-family ones, but, women-led businesses record significantly lower productivity. At the LEP level, the findings reveal that firms located in LEPs with a more skilled and educated population tend to have higher labour productivity. Improved broadband speeds, in some models, are also associated with higher productivity. Taken together the results give credence, in terms of explaining variations in SME productivity, to industrial organisation theory, the Resource-Based View relating to business capabilities and institutional and network effects. Not surprisingly, our analysis confirms previous findings from the ONS about the regional disparities in the UK, as we find that firms located in London and the South East demonstrate higher labour productivity. However, we find a lack of supporting evidence for agglomeration theories which stress the benefits of urban areas per se in stimulating higher SME productivity, since our analysis shows that firms located in rural areas perform as well as urban firms

    Bodies, building and bricks: Women architects and builders in eight eco-communities in Argentina, Britain, Spain, Thailand and USA

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    Eco-building is a male domain where men are presumed to be better builders and designers, more men than women build and women find their design ideas and contributions to eco-building are belittled. This article suggests that a focus on bodies, embodiment and the ‘doing’ of building is a potentially productive way to move beyond current gender discrimination. This article makes three key interventions using empirical material from eight case studies of eco-communities in Britain, Thailand, Spain, the USA and Argentina. First, it uses a focus on eco-communities to illustrate the enduring persistence of gender divisions in architecture and building. Second, by using multi-site examples of eco-communities from diverse countries this article finds more commonalities than differences in gender discrimination across cultures and nationalities. Third, it outlines three spaces of opportunity through which more gender-neutral approaches are being developed in eco-building: (1) in challenging the need for ‘strong’ bodies, (2) by practising more embodied ways of building and (3) by making visible women's bodies in building. The ‘doing’ and manual aspect of eco-building is unfamiliar for many (not just women) and interviewees commented on the need to (re)learn how to be practical and to understand the physical possibilities (and limitations) of their bodies

    The place of strategic environmental assessment in the privatised electricity industry

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    The private sector has given relatively little attention to the emergence of strategic environmental assessment (SEA); even recently privatised utilities, where SEA might be deemed particularly appropriate, and whose activities are likely to fall within the scope of the European Union SEA Directive, have shown less interest than might be expected. However, the global trend towards the privatisation of state-owned enterprises makes the adaptation of SEA towards these industries all the more pressing. This paper addresses the place that SEA might take within the electricity sector, taking the privatised UK electricity industry as an example. Particular challenges are posed by the radical restructuring of the industry, designed to introduce competitive behaviour, making the development of comprehensive SEA processes problematic, and requiring SEA to be placed in the context of corporate environmental policy and objectives.</p

    Intelligence Studies, Universities and Security

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    This article offers a critical assessment of academic intelligence studies in higher education. It argues that universities (and academics) should value this subject far more highly than they currently do. Doing so will enhance better public understanding of an increasingly important and unique device in modern governance. It will also improve the quality of intelligence activity by raising awareness of both good and bad practice, encourage lawfulness by means of public understanding and so defending a vital public service from ill-informed attacks in today’s conflicted world. This, rather than training potential officers, should be the primary purpose of intelligence studies

    Strategic Withholding through Production Failures

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    Anecdotal evidence indicates that electricity producers use production failures to disguise strategic reductions of capacity in order to influence prices, but systematic evidence is lacking. We use a quasi-experimental set up and data from the Swedish energy market to examine such behavior. In a market without strategic withholding, the decision of reporting a failure should be independent of the market price. We show that marginal producers in fact base their decision to report a failure in part on prices, which indicates that failures are a result of economic incentives as well as of technical problems

    Expression of eEF1A2 is associated with clear cell histology in ovarian carcinomas: overexpression of the gene is not dependent on modifications at the EEF1A2 locus

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    The tissue-specific translation elongation factor eEF1A2 is a potential oncogene that is overexpressed in human ovarian cancer. eEF1A2 is highly similar (98%) to the near-ubiquitously expressed eEF1A1 (formerly known as EF1-α) making analysis with commercial antibodies difficult. We wanted to establish the expression pattern of eEF1A2 in ovarian cancer of defined histological subtypes at both the RNA and protein level, and to establish the mechanism for the overexpression of eEF1A2 in tumours. We show that while overexpression of eEF1A2 is seen at both the RNA and protein level in up to 75% of clear cell carcinomas, it occurs at a lower frequency in other histological subtypes. The copy number at the EEF1A2 locus does not correlate with expression level of the gene, no functional mutations were found, and the gene is unmethylated in both normal and tumour DNA, showing that overexpression is not dependent on genetic or epigenetic modifications at the EEF1A2 locus. We suggest that the cause of overexpression of eEF1A2 may be the inappropriate expression of a trans-acting factor. The oncogenicity of eEF1A2 may be related either to its role in protein synthesis or to potential non-canonical functions

    Low-Cycle Fatigue of Ultra-Fine-Grained Cryomilled 5083 Aluminum Alloy

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    The cyclic deformation behavior of cryomilled (CM) AA5083 alloys was compared to that of conventional AA5083-H131. The materials studied were a 100 pct CM alloy with a Gaussian grain size average of 315 nm and an alloy created by mixing 85 pct CM powder with 15 pct unmilled powder before consolidation to fabricate a plate with a bimodal grain size distribution with peak averages at 240 nm and 1.8 μm. Although the ultra-fine-grain (UFG) alloys exhibited considerably higher tensile strengths than those of the conventional material, the results from plastic-strain-controlled low-cycle fatigue tests demonstrate that all three materials exhibit identical fatigue lives across a range of plastic strain amplitudes. The CM materials exhibited softening during the first cycle, similar to other alloys produced by conventional powder metallurgy, followed by continual hardening to saturation before failure. The results reported in this study show that fatigue deformation in the CM material is accompanied by slight grain growth, pinning of dislocations at the grain boundaries, and grain rotation to produce macroscopic slip bands that localize strain, creating a single dominant fatigue crack. In contrast, the conventional alloy exhibits a cell structure and more diffuse fatigue damage accumulation

    Practice improves court-mobility and self-efficacy in tennis-specific wheelchair propulsion

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    Purpose: Wheelchair tennis (WT) chair propulsion is uniquely characterised by the requirement for racket-holding coupled with effective hand-rim contact. Thus, investigations involving strategies to enhance chair mobility skills are merited. The aim was to examine effects of organised practice on WT match-play responses and the impact of racket-holding during practice. Materials and methods: Following physiological profiling involving graded and peak exercise testing, sixteen able-bodied (AB) participants performed bouts of WT match-play interspersed with practice involving wheelchair mobility drills completed with (R) or without (NR) a tennis racket. A data logger recorded distance and speed. Self-efficacy was reported. Results and conclusions: Significant main effects for match revealed higher post-practice overall and forwards distances (P < 0.05), peak (P < 0.005) and average (P < 0.05) speeds, and self-efficacy (SE) (P = 0.001) were attained. During practice, lower distances and speeds were achieved with R, with a lower physiological cost than NR. Practice increases court-movement and SE with no associated increases in physiological cost. Changes represent enhanced court-mobility. Differences between practice characteristics provide options for skill development and optimisation of health outcomes
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