46,163 research outputs found

    The management of deshopping and its effects on services: a mass market case study

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    Purpose: Deshopping is the return of products, after they have fulfilled the purpose for which they were borrowed. Previous research indicates that deshopping is a prevalent and growing consumer behaviour. This paper examines deshopping from a retail perspective. It is a case study of interviews conducted with a mass-market retailer, to investigate their awareness and management of this behaviour. Methodology: This paper is a case study of nine interviews conducted with different levels of staff at a mass-market retailer in their flagship London store, to investigate their awareness and management of deshopping. Findings: The findings demonstrate the beliefs, attitudes and emotions of the different levels of employees towards deshopping and demonstrates their attempts to manage deshopping and combat the negative affects of this on customer service. Research limitations: The limitation of this research is that it is only conducted with one high street retailer. However, it is important to highlight that this is a large womenswear retailer which is highly representative of other retailers within the sector. There is little detail given regarding the retailer itself or their fundamentals of the actual Customer Service Policy, this is due to the confidentiality agreement between the researcher and retailer. It is important to acknowledge the sensitivity of this type research to retailers who are reluctant to have this information publicised. It is also important to acknowledge that many retailers have not made any attempts to manage this behaviour by restricting their returns policy. So this research case study is conducted with a retailer that is actively introducing change to manage this behaviour. Practical implications: The research concludes with the implications of deshopping and its management and makes recommendations on how to reduce deshopping whilst maintaining customer service for the genuine consumer. Originality/value of the paper: This is the first case study with a mass market retailer highlighting their approaches towards managing deshopping whilst trying to maintain customer service

    A study of the high frequency limitations of series resonant converters

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    A transformer induced oscillation in series resonant (SR) converters is studied. It may occur in the discontinuous current mode. The source of the oscillation is an unexpected resonant circuit formed by normal resonance components in series with the magnetizing inductance of the output transformers. The methods for achieving cyclic stability are: to use a half bridge SR converter where q0.5. Q should be as close to 1.0 as possible. If 0.5q1.0, the instability will be avoided if psi2/3q-1/3. The second objective was to investigate a power field effect transistor (FET) version of the SR converter capable of operating at frequencies above 100 KHz, to study component stress and losses at various frequencies

    Distinguishing low frequency mutations from RT-PCR and sequence errors in viral deep sequencing data

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    There is a high prevalence of coronary artery disease (CAD) in patients with left bundle branch block (LBBB); however there are many other causes for this electrocardiographic abnormality. Non-invasive assessment of these patients remains difficult, and all commonly used modalities exhibit several drawbacks. This often leads to these patients undergoing invasive coronary angiography which may not have been necessary. In this review, we examine the uses and limitations of commonly performed non-invasive tests for diagnosis of CAD in patients with LBBB

    Investigating intra-host and intra-herd sequence diversity of foot-and-mouth disease virus

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    Due to the poor-fidelity of the enzymes involved in RNA genome replication, foot-and-mouth disease (FMD) virus samples comprise of unique polymorphic populations. In this study, deep sequencing was utilised to characterise the diversity of FMD virus (FMDV) populations in 6 infected cattle present on a single farm during the series of outbreaks in the UK in 2007. A novel RT–PCR method was developed to amplify a 7.6 kb nucleotide fragment encompassing the polyprotein coding region of the FMDV genome. Illumina sequencing of each sample identified the fine polymorphic structures at each nucleotide position, from consensus level changes to variants present at a 0.24% frequency. These data were used to investigate population dynamics of FMDV at both herd and host levels, evaluate the impact of host on the viral swarm structure and to identify transmission links with viruses recovered from other farms in the same series of outbreaks. In 7 samples, from 6 different animals, a total of 5 consensus level variants were identified, in addition to 104 sub-consensus variants of which 22 were shared between 2 or more animals. Further analysis revealed differences in swarm structures from samples derived from the same animal suggesting the presence of distinct viral populations evolving independently at different lesion sites within the same infected animal

    LRG-BEASTS III: Ground-based transmission spectrum of the gas giant orbiting the cool dwarf WASP-80

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    We have performed ground-based transmission spectroscopy of the hot Jupiter orbiting the cool dwarf WASP-80 using the ACAM instrument on the William Herschel Telescope (WHT) as part of the LRG-BEASTS programme. This is the third paper of a ground-based transmission spectroscopy survey of hot Jupiters using low-resolution grism spectrographs. We observed two transits of the planet and have constructed transmission spectra spanning a wavelength range of 4640-8840A. Our transmission spectrum is inconsistent with a previously claimed detection of potassium in WASP-80b's atmosphere, and is instead most consistent with a haze. We also do not see evidence for sodium absorption at a resolution of 100A.Comment: 11 pages, 9 figures. Accepted for publication in MNRA

    Is there further evidence for spatial variation of fundamental constants?

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    The detection of a spatial variation of the fine-structure constant, alpha, based on study of quasar absorption systems has recently been reported. The physics that causes this alpha-variation should have other observable manifestations, and this motivates us to look for complementary astrophysical effects. In this paper we propose a method to test whether spatial variation of fundamental constants existed during the epoch of big bang nucleosynthesis. Using existing measurements of primordial deuterium abundance we find very weak indications that such a signature might exist, but the paucity of measurements precludes any firm conclusion. We also examine existing quasar absorption spectra data that are sensitive to variation of the electron-to-proton mass ratio, mu, and x = (alpha^2 mu g_p) for spatial variation.Comment: 6 pages, 1 figur

    The 90 GHz radiometric imaging

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    A 90-GHz (3 mm wavelength) radiometer with a noise output fluctuation of 0.22 K (RMS), with a scanning antenna beam mirror, and the data processing system are described. Real-time radiometric imaging of terrain and man-made objects are shown. Flying at an altitude of 1500 ft a radiometer antenna with a 2 degrees halfpower beamwidth can distinguish landforms, waterways, roads, runways, bridges, ships at sea and their wakes, aircraft on runways, and athletic fields. A flight taken at an altitude of 3000 ft with approximately 2000 ft of clouds below the radiometer demonstrates the ability to distinguish bridges, rivers, marshland and other landforms even though the clouds are optically opaque. The radiometric images of a few representative scenes along with photographs of the corresponding scenes are presented to demonstrate the resolution of the imager system

    Molecular Beam Research

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    Contains reports on two research projects
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