5,533 research outputs found

    Hermetic sealed vibration damper Patent

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    Hermetically sealed vibration damper design for use in gimbal assembly of spacecraft inertial guidance syste

    Marketing career transitions: women marketers embedded in the profession?

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    This qualitative study explores a UK sample of 25 women marketing professionals and how their career paths are reached and moderated over time. The research addresses the women‟s reasons for moving from corporate marketing careers to self-employment in marketing and discovers that their career anchor is their embeddedness in the marketing profession which remains a constant throughout their career. This suggests that marketing talent is being lost to the corporate environment but not necessarily to the profession. It also suggests that the profession needs to acknowledge these career transitions when offering support to those practicing marketing

    The Richtmyer–Meshkov instability in magnetohydrodynamics

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    In ideal magnetohydrodynamics (MHD), the Richtmyer–Meshkov instability can be suppressed by the presence of a magnetic field. The interface still undergoes some growth, but this is bounded for a finite magnetic field. A model for this flow has been developed by considering the stability of an impulsively accelerated, sinusoidally perturbed density interface in the presence of a magnetic field that is parallel to the acceleration. This was accomplished by analytically solving the linearized initial value problem in the framework of ideal incompressible MHD. To assess the performance of the model, its predictions are compared to results obtained from numerical simulation of impulse driven linearized, shock driven linearized, and nonlinear compressible MHD for a variety of cases. It is shown that the analytical linear model collapses the data from the simulations well. The predicted interface behavior well approximates that seen in compressible linearized simulations when the shock strength, magnetic field strength, and perturbation amplitude are small. For such cases, the agreement with interface behavior that occurs in nonlinear simulations is also reasonable. The effects of increasing shock strength, magnetic field strength, and perturbation amplitude on both the flow and the performance of the model are investigated. This results in a detailed exposition of the features and behavior of the MHD Richtmyer–Meshkov flow. For strong shocks, large initial perturbation amplitudes, and strong magnetic fields, the linear model may give a rough estimate of the interface behavior, but it is not quantitatively accurate. In all cases examined the accuracy of the model is quantified and the flow physics underlying any discrepancies is examine

    Marketing women in Iceland: challenges of establishing a company

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    Objectives: This paper explores the experiences of nine Icelandic business women who that have their own marketing businesses. In recent years more women graduated from Icelandic universities than men (Statistic Iceland, 2012a) where business and marketing studies have proved popular. Little is known though about the experiences of Icelandic women moving into self-employment in marketing, particularly in relation to challenges of setting up and managing their own business. Iceland provides a unique context as it is a small island with only 325.000 habitants (Statistic Iceland, 2014). The country was hit badly by the economic crisis in 2008 which is likely to have affected the career and business decisions of self-employed women. Prior Work: Marketing is considered to be a female-oriented industry but experiences of women working in marketing are an under-researched area (Maclaren and Catterall, 2000). In addition, Marlow et al.,(2009) called for studies focusing on the challenges of the entrepreneurial environment for women. Some of the challenges that women owning their own business have to face have been identified as capitalisation, working hours and location (Carter et al., 2001; Roper and Scott, 2009; Harding, 2006). These experiences will be discussed in this paper. Approach: This paper builds on work from a similar study already undertaken in the UK by Foster and Brindley (2010); Foster et al., (2011) and Wheatley at al., (2011) and their investigation of marketing businesses in the UK but explores the experiences in the novel context of Iceland which is a much smaller economy and often heralded as a beacon of gender equality (Petterson 2012; Acthenhagen and Tilmar, 2013). The study takes an exploratory, qualitative approach. Convenience sampling was used for the study with nine Icelandic women who owned a marketing business. All the interviews were conducted with the owner of the company using a set of questions around a priori themes drawn from the literature. The interviews took place in August 2013. Results: Preliminary analysis indicates that Icelandic women are cautious when it comes to capitalisation. They are quite reluctant to take out a loan to finance their business. In addition the majority seemed to work long hours, often nights and weekends. Full findings will be presented at the conference. Implications: These findings give the first account of experiences of Icelandic self-employed women in marketing and answers recent calls for studies in the field of marketing and the entrepreneur environment for women (Maclaren and Catterall, 2000; Marlow et al.,2009). Value: This paper provides an insight into the experiences of the Icelandic business women working in marketing. In addition it offers comparisons with previous studies conducted in the UK

    Calculating the inherent visual structure of a landscape (inherent viewshed) using high-throughput computing

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    This paper describes a method of calculating the inherent visibility at all locations in a landscape (‘total viewshed’) by making use of redundant computer cycles. This approach uses a simplified viewshed program that is suitable for use within a distributed environment, in this case managed by the Condor system. Distributing the calculation in this way reduced the calculation time of our example from an estimated 34 days to slightly over 25 hours using a cluster of 43 workstations. Finally, we discuss the example ‘total viewshed’ raster for the Avebury region, and briefly highlight some of its implications

    An exploration of Icelandic marketing entrepreneurs

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    Little research have focused on women entrepreneurship in Iceland and yet it is often heralded as a beacon of gender equality (Pettersson, 2012; Achtenhagen and Tilmar, 2013; Smith-Hunter, 2013). The World Economic Forum (2013) identified Iceland as the country with the world's smallest gender gap. This small gender gap is not reflected in the entrepreneurship figures which show that only 8 percent of Icelandic women are classed as entrepreneurs (GEM, 2009) compared to 15 percent of men. Furthermore, Danson and Burnett (2013) posited that entrepreneurship in island environments is an under-researched area. It is therefore pertinent to explore what is happening in terms of women’s entrepreneurship in Iceland. The paper builds upon similar studies already undertaken in the UK and Europe (see Foster et al., 2011 and Wheatley et al, 2011) that have investigated the careers of marketing professionals through their life-courses. Marketing is considered to be a feminised industry in Iceland yet there is little knowledge about the careers these women have in the profession or why they decide to become self- employed. The findings showed the most often women became self-employed because of a trigger event and it seemed in most cases to be the financial crises in 2008

    Fire and rescue service community safety initiatives: measuring impact

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    Purpose - The purpose of this paper is to discuss methods of capturing the impact of fire and rescue service (FRS) community safety work which directly aims to reduce the occurrence of specific incidents. Design/methodology/approach - The impact assessment method described focuses on addressing one of the major problems with regards to attributing outcomes to FRS community safety work; the influence of external factors. This paper looked to assess the incident trends within a case study UK FRS within the context of the following external data sets: first, incident trends within other UK FRSs; second, demographic trends; and third, incident data from other public services. Findings - There were instances, either across the whole region served by the case study FRS, or within specific districts, where evidence suggested a strong likelihood of the community safety work of the case study FRS contributing towards an observed reduction in incidents. These findings were established through filtering the impact of widespread external factors, which could impact upon incident figures. Research limitations/implications - The utility of this impact assessment relies upon FRS consistently recording the specific aims and focus of individual community safety activity, so that any positive outcomes can be attributed to a particular group of community safety initiatives. Originality/value - This paper discusses how an evaluation process, to deter mine the likelihood of community safety impacting upon incident numbers, can be practically applied to a FRS

    Thermodynamically consistent equilibrium properties of normal-liquid Helium-3

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    The high-precision data for the specific heat C_{V}(T,V) of normal-liquid Helium-3 obtained by Greywall, taken together with the molar volume V(T_0,P) at one temperature T_0, are shown to contain the complete thermodynamic information about this phase in zero magnetic field. This enables us to calculate the T and P dependence of all equilibrium properties of normal-liquid Helium-3 in a thermodynamically consistent way for a wide range of parameters. The results for the entropy S(T,P), specific heat at constant pressure C_P(T,P), molar volume V(T,P), compressibility kappa(T,P), and thermal expansion coefficient alpha(T,P) are collected in the form of figures and tables. This provides the first complete set of thermodynamically consistent values of the equilibrium quantities of normal-liquid Helium-3. We find, for example, that alpha(T,P) has a surprisingly intricate pressure dependence at low temperatures, and that the curves alpha(T,P) vs T do not cross at one single temperature for all pressures, in contrast to the curves presented in the comprehensive survey of helium by Wilks. Corrected in cond-mat/9906222v3: The sign of the coefficient d_0 was misprinted in Table I of cond-mat/9906222v1 and v2. It now correctly reads d_0=-7.1613436. All results in the paper were obtained with the correct value of d_0. (We would like to thank for E. Collin, H. Godfrin, and Y. Bunkov for finding this misprint.)Comment: 19 pages, 19 figures, 9 tables; published version; note added in proof; v3: misprint correcte

    New objects in old structures: The Iron Age hoard of the Palacio III megalithic funerary complex (Almadén de la Plata, Seville, Spain)

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    Cultural contact, exchange and interaction feature high in the list of challenging topics of current research on European Prehistory. Not far off is the issue of the changing role of monuments in the making and maintaining of key cultural devices such as memory and identity. Addressing both these highly-debated issues from a science-based perspective, in this paper we look at an unusual case study set in southern Iberia and illustrate how these archaeological questions can benefit from robust materials-science approaches.We present the contextual, morphological and analytical study of an exceptional Early Iron Age hoard composed of a number of different (and mostly exotic) materials such as amber, quartz, silver and ceramic. This hoard, found under the fallen orthostat of a megalithic structure built at least 2000 years earlier, throws new light on long-distance exchange networks and the effect they could have had on the cultural identities and social relations of local Iberian Early Iron Age communities. Moreover, the archaeometric study reveals how diverse and distant the sources of these item are (Northern Europe to Eastern and Western Mediterranean raw materials, as well as local and eastern technologies), therefore raising questions concerning the social mechanisms used to establish change and resistance in contexts of colonial encounter
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