117 research outputs found

    Cartridge-based nucleic acid amplification test (Cbnaat) for diagnosis of pulmonary tuberculosis In HIV: Results from Madurai District, Tamilnadu.

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    Background: Compared to sputum smear microscopy, which has limited utility among People Living with HIV(PLHIV) CBNAAT is able to detect more TB cases regardless of HIV status. Limited studies exist to study this in rural population. Methods: The study objective was to assess the proportion of CBNAAT being positive for mycobacterium tuberculosis and there in rifamycin sensitivity among the HIV infected patients attending Tuberculosis clinic at a tertiary care hospital (receiving huge rural population), at Madurai, Tamilnadu. The Demographic, and CBNAAT results data of all HIV infected patients attending Pulmonology Out patient clinic at Government Rajaji Hospital, Madurai during the period between January 2017 to June 2017 were collected and analysed. Results: Data on a total of 428 patients was obtained from the period of January 2017 to June 2017, who fit into the inclusion criteria. Out of this total, 64%(n=272) were males. Among the total 428 patients, 56 patients(13%) were detected positive for mycobacterium tuberculosis. Gastric juice and FOB did not yield any positive results for TB in all positive, among the M.TB detected patients, 55 were sensitive to Rifampicin and only one patient was reported as resistance to Rifampicin. Conclusion: Fairly good proportion of M.TB detection is possible, when we use CBNAAT for detecting TB in HIV infected, even when the patients have with limited duration of respiratory symptom

    Pressure fluctuations in centrifugal compressor diffusers

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    The unstable flow phenomenon like rotating stall and surge in centrifugal compressors occur at very low flow rates. These would cause unduly large vibrations in the turbo- machinery components and results in mechanical failure. It is important to detect this phenomenon and avoid it by means of early warning systems. An attempt has been made in this paper to study the pressure fluctuations using high frequency miniature transducers in vane and vaneless diffusers of a centrifugal compressor. The unstable nature of the flow is characterized. The observation from the measurements indicate the pressure fluctuations in the vane diffusers are getting amplified and carried to the exit of the diffuser whereas in the case of vaneless diffuser such a phenomena is not observed. The flow near the leading edge of diffuser plays an important role in diffuser performance. The unsteady pressure fluctuations in the diffuser are characterized in terms of instability parameter at various locations in the diffuser. The location where such an instability parameter is sensitive to the flow coefficient is identified as the diffuser throat. Through this instability parameter it is possible to provide early warning just before compressor goes into stall. (Author

    Virtual environments and autism: a developmental psychopathological approach

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    Individuals with autism spectrum disorders supposedly have an affinity with ICT, making it an ideally suited media for this population. Virtual environments (VEs) – both two dimensional and immersive – represent a particular kind of ICT that might be of special benefit. Specifically, this paper discusses the importance of psychological theory for VE designed for this population. I describe the contribution that different theories of autism (e.g., theory of mind, executive function, weak central coherence theory) have made and can make, as well as the potential of other non-autism-specific theories (e.g., embodied cognition). These technologies not only illuminate our understanding of autism, but they can also be used to develop new technologies for people without autism. So, as well as being an area of specialism, I argue that VE research in autism has extended – and will go onto – the boundaries of human–computer interaction more generally. This is because autism provides a unique window into human social communication and learning. Further, this field offers a chance for better inclusivity for individuals with autism within a digital society

    Luxury as a Driver for New Urban Identities in Milan: Geographies, Spatial Practices, and Open Questions

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    In contemporary cities, the role of capital and private investors who finance interventions in the field of urban regeneration has become an increasingly important catalyst for the physical and social impacts of these transformations. This paper aims to point out the role of urban projects developed by luxury companies or stakeholders in consolidated urban regions. Starting by analysing the spatial distribution of luxury firms in Milan and composing a tentative classification system based on a variety of case studies, the author proposes a mental map of spaces shaped, occupied, transformed and infected by the sector within the contemporary metropolis. The resulting network of urban places sprawls out not only across centralized areas, but also in peripheral neighbourhoods, which interact with existing contexts, spatial and economic relationships as well as evident and hidden flows. From this basis, the contribution reflects on a set of luxury-driven practices and their impacts on urban identities. The reflection includes the role played by media technologies in these transformations and in the study of their development. The conclusions then discuss the role of luxury; whether it transforms the physical form of our city (its shape and patterns) or rather influences processes of transformation

    Effet signal d'une réduction promotionnelle du prix : concept et expérimentation.

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    L'effet observé à court terme d'une réduction promotionnelle du prix sur la demande est souvent positif du fait de la valorisation des bénéfices offerts par la promotion et par le simple effet signal engendré par la communication promotionnelle. Lorsque le consommateur effectue une évaluation approfondie de l'offre promotionnelle et qu'il manque d'informations (sur le montant de la réduction ou le prix de base), l'information transmise par la promotion, qui est à la source de l'effet signal, est aussi utilisée pour élaborer le cadre du choix. Un conflit entre la cherté perçue et le signal promotionnel peut donc dévaloriser une offre. Dans ces conditions, nous montrons, par l'analyse des résultats d'une expérimentation sur 320 consommateurs, que le changement du cadre du choix résultant d'une offre promotionnelle conduit à un rejet d'achat plus important d'une marque premium pour un produit de grande consommation. Si ce résultat d'un effet négatif d'une réduction promotionnelle du prix sur la demande à court terme est rarement observé sur les ventes, il doit cependant conduire les managers à anticiper une baisse de l'efficacité promotionnelle lorsque la réduction de prix n'est pas indiquée et à en limiter l'usage pour les marques premium.Signaling effect of a promotional price reduction: concept and experimentation Abstract Sales promotion has often positive effects on short term demand effects due to the benefits provided and to the signaling effect of the communication. If information is missing (regular price, price reduction) when consumers have an extended choice process, the information transmitted by the sales promotion communication is used not only as a signal but also to elaborate the choice frame. Thus conflicting information between the promotional signal and perceived expensiveness can reduce perceived value. Under these conditions the author show, through analysis of experimental data on 320 consumers, that changes due to a promotional price reduction can result in higher rejection for a premium brand in a consumer good market. While decreases in sales volume due to promotional price reductions are not frequently observed, such a possibility means that managers have to anticipate a reduction of their promotional effectiveness when price reduction is not indicated (special offer) and to avoid its use for premium brands. Key words: Sales promotion, price reduction, promotion signal, experiment, Gabor & Granger.Gabor et Granger; Promotion des ventes; Réduction de prix; Effet signal; Expérimentation;

    K-core of co-author network (k = 10).

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    <p>The size of the node denotes the number of papers and the thickness of interconnecting lines (edges) denotes the number of co-authored papers between the authors. Authors having 10 or more co-author links during the study period have been visualized.</p
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