811 research outputs found

    Three Flavoured neutrino oscillations and the Leggett Garg Inequality

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    Three flavoured neutrino oscillations are investigated in the light of the Leggett-Garg inequality. The outline of an experimental proposal is suggested whereby the findings of this investigation may be verified. The results obtained are: (a) The maximum violation of the Leggett Garg Inequality (LGI) is 2.170362.17036 for neutrino path length L1=140.15L_{1}=140.15 Km and ΔL=1255.7\Delta L=1255.7 Km.(b) Presence of the mixing angle θ13\theta_{13} enhances the maximum violation of LGI by 4.6%4.6\%.(c) The currently known mass hierarchy parameter α=0.0305\alpha = 0.0305 increases the the maximum violation of LGI by 3.7%3.7\%. (d)Presence of CP violating phase parameter enhances the maximum violation of LGI by 0.24%0.24\%, thus providing an \textit{alternative indicator of CP violation} in 3-flavoured neutrino oscillations.Comment: 8 pages, 5 figures, late

    A Society Based Research to Assess Adherence of Antiretroviral Therapy

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    Access Adherence to Antiretroviral Therapy. A community-based antiretroviral (ART) drugs adherence study was conducted in Kolkata, India beginning in January and concluding in March 2011. This study was designed to explore the level of adherence as well as factors influencing adherence to ART by those who are receiving treatment through a public health care delivery system. This health care system is implemented through the National AIDS Control Program in the state of West Bengal, India. The research findings showed a high degree of non-adherence, between 48-52%, among the ART recipients. The analysis highlights a number of key factors negatively influencing adherence including long waiting time at the ART center, distance from residence to ART Centre, travel related expenditure, and fear of being identified as HIV + to family members and neighbors. Some positive influences were identified in the data as well. If a person is a member of a positive people network there is a greater chance for adherence as well as if an individual self-identifies as positive to others. However, no single factor, rather a combination of several factors, proved to be responsible for influencing ART adherence among recipients. &nbsp

    Strings from Orientifolds

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    We construct models in 1+1 dimensions with chiral (0,N) supersymmetry by taking orientifolds of type IIB on an eight-torus identified by different numbers of reflections. The resulting models have Dirichlet strings, fivebranes and ninebranes stretched along different directions. The cases we study in detail have residual chiral supersymmetry (0,8), (0,4) and (0,2). The gravitational anomaly in all cases is shown to cancel.Comment: 30 pages, Latex, v2: references added, version to appear in Nucl. Phys.

    PathAB: A New Method to Estimate End-to-End Available Bandwidth of Network Path

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    Estimating available bandwidth accurately is extremely important for many network related applications, especially the ones which need real-time traffic information. With the ever increasing use of Internet, several available bandwidth measurement techniques have been proposed. But most of them assume fluid traffic model, whereas studies show that current Internet traffic follows Poisson distribution. Moreover, very few can operate in stand-alone mode and have relatively high estimation errors. We propose a new method, PathAB, which combines the concepts of three existing algorithms, MoSeab, PoissonProb and PathChirp. It first obtains a rough estimation of available bandwidth using an exponential probing train, and later obtains the final estimate using several Poisson distributed probing trains. It can operate both in client-server and stand-alone modes. Unlike other stand-alone methods, PathAB sends very small echo packets back-to-back after the large probe packets to reduce the cross-traffic effect in returning path as well as the estimation error

    Reorganizing Educational Institutional Domain using Faceted Ontological Principles

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    The purpose of this work is to find out how different library classification systems and linguistic ontologies arrange a particular domain of interest and what are the limitations for information retrieval. We use knowledge representation techniques and languages for construction of a domain specific ontology. This ontology would help not only in problem solving, but it would demonstrate the ease with which complex queries can be handled using principles of domain ontology, thereby facilitating better information retrieval.Comment: 26 pages, 12 figures, KNOWLEDGE ORGANIZATION Journal Pape

    Time-Based Raga Recommendation and Information Retrieval of Musical Patterns in Indian Classical Music Using Neural Networks

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    In Indian Classical Music (ICM) perspective, Raga is formed from the different and correct combination of notes. If it is observed the history of Indian Classical Raga in ICM, the playing or serving each of the ragas has some unique sessions. The procedure is to suggest the classifications of playing a raga has been attempted to display by explaining unique musical features and pattern matching. This contribution has been represented how music structures can be advanced through a more conceptual demonstration and consent to unambiguously describe process of computational modeling of Musicology which signify the challenge on complete musical composition from the elementary vocal objects of ICM usage using Neural Networks. In Neural network the samples of various ragas have been taken as input and classify them according to the times of the performance. Over 90% accuracy level has achieved using entire Confusion Matrices and Error Histogram performance evaluation technique

    Relationship between stroke and compliance of antihypertensive medication

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    Background: Stroke is a leading cause of death and long-term disability globally, with hypertension being a key modifiable risk factor. Effective management of hypertension through medication compliance is crucial for reducing the risk of both initial and recurrent strokes. However, non-compliance with antihypertensive medication is a common challenge, particularly in resource-constrained countries like Bangladesh, where awareness and access to healthcare can be limited. This study aimed to investigate the relationship between antihypertensive medication compliance and the incidence of stroke, as well as the risk of stroke recurrence, in hypertensive patients admitted to Dhaka Medical College Hospital. Methods: A descriptive cross-sectional study was conducted between March and August 2010, involving 100 stroke patients diagnosed clinically and confirmed by CT scan. Data on patients' hypertension status, medication adherence, and stroke history were collected through interviews and medical record reviews. Statistical analysis was conducted using SPSS software (Version 12) to explore the relationship between compliance and stroke occurrence. Results: From 100 stroke patients, 65% were previously diagnosed with hypertension. Among these patients, 18 (27.7%) were compliant and 47 (72.3%) were non-compliant with their prescribed antihypertensive medication. The recurrence of stroke was significantly higher in non-compliant patients, with 66.67% experiencing a second stroke, compared to 33.33% among compliant patients. Conclusion: There is a significant association between non-compliance with antihypertensive medication and both the onset and recurrence of stroke. Enhancing patient adherence to antihypertensive therapy through education and healthcare interventions is vital to reducing stroke-related morbidity and mortality
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