1,761 research outputs found

    An analytical model of prominence dynamics

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    Solar prominences are magnetic structures incarcerating cool and dense gas in an otherwise hot solar corona. Prominences can be categorized as quiescent and active. Their origin and the presence of cool gas (~10410^4K) within the hot (~10610^6K) solar corona remains poorly understood. The structure and dynamics of solar prominences was investigated in a large number of observational and theoretical (both analytical and numerical) studies. In this paper, an analytic model of quiescent solar prominence is developed and used to demonstrate that the prominence velocity increases exponentially, which means that some gas falls downward towards the solar surface, and that Alfven waves are naturally present in the solar prominences. These theoretical predictions are consistent with the current observational data of solar quiescent prominences.Comment: Update Final Journal Print Version along with other Metadat

    Studi Kelayakan USAha Brem di Desa Kaliabu Kecamatan Mejayan Kabupaten Madiun

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    : This study aims to analyze the feasibility brem agroindustry in Kaliabu Village Mejayan Sub District of Madiun.The basic method of this research is descriptive analysis using survey techniques.Location research done purposively (intentionally).The number of samples in this study were 30 respondents who are entrepreneurs Brem and retrieval techniques of respondents is done by simple random sampling. The data used are primary and secondary data.Data collected observations, interviews, records and documentation.The results showed that the business viable in terms of market and marketing aspects, can be seen through the availability of appropriate types of markets for products Brem, there is a demand from consumers, and offers from producers.From the aspect of technology and production processes, can be seen from the availability of tools and machines to do the production process Brem, there is an appropriate location for business and production processes that can be run by labor effort.Meanwhile, from the aspect of raw materials, can be seen from the continuity of availability of raw materials glutinous that become the main raw material for the production of Brem.The analysis shows the financial aspect NPV value of Rp.150.759.948,12Gross B / C of 1,31 Net B / C of 1,96 and the value of IRR 26,10%. The payback period or return on investment period is 3 years with a value of BEP Brem are 42.085 units large box size or 84.170 units brem small box size.Analysis of the feasibility of switching value shows the change in number to 12,91% increase in costs and 16,27% for the decline in revenue.Advice can be given to businesses that add Brem business branches and expand its marketing territory.Brem effort is a tremendous opportunity for the group of businessmen and investors to invest in venture brem

    Low-Complexity Detection/Equalization in Large-Dimension MIMO-ISI Channels Using Graphical Models

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    In this paper, we deal with low-complexity near-optimal detection/equalization in large-dimension multiple-input multiple-output inter-symbol interference (MIMO-ISI) channels using message passing on graphical models. A key contribution in the paper is the demonstration that near-optimal performance in MIMO-ISI channels with large dimensions can be achieved at low complexities through simple yet effective simplifications/approximations, although the graphical models that represent MIMO-ISI channels are fully/densely connected (loopy graphs). These include 1) use of Markov Random Field (MRF) based graphical model with pairwise interaction, in conjunction with {\em message/belief damping}, and 2) use of Factor Graph (FG) based graphical model with {\em Gaussian approximation of interference} (GAI). The per-symbol complexities are O(K2nt2)O(K^2n_t^2) and O(Knt)O(Kn_t) for the MRF and the FG with GAI approaches, respectively, where KK and ntn_t denote the number of channel uses per frame, and number of transmit antennas, respectively. These low-complexities are quite attractive for large dimensions, i.e., for large KntKn_t. From a performance perspective, these algorithms are even more interesting in large-dimensions since they achieve increasingly closer to optimum detection performance for increasing KntKn_t. Also, we show that these message passing algorithms can be used in an iterative manner with local neighborhood search algorithms to improve the reliability/performance of MM-QAM symbol detection

    MUSIC THERAPY CLINICAL PRACTICE AND RESEARCH INITIATIVES IN INDIA: BRIDGE BETWEEN THE EXPERIENCES OF TRADITIONAL MUSIC HEALING PRACTICES AND ITS SCIENTIFIC VALIDATIONS

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    The aim of this review is to showcase and discuss about how music therapy clinical practice and research initiatives in India serve as a bridge between the experiences of traditional music healing practices and its scientific validations. The current status of these healing applications in the global framework of music therapy is highlighted. The multi-modal approach by which aspiring music therapists engage in clinical practice and research with an individualized approach to bring about the therapeutic outcome are presented. Traditional healing resources like Vedic chanting, Raga Cikitsa, Garbha Sanskara (Learning in the Womb), Time theory of ragas integrating the ancient Ayurvedic perspectives and Cakra activation (music and breathing technique using ragas) are enumerated. The clinical outcomes are reviewed as a way to impact biological, physiological, psychological, chrono-biological and spiritual dimensions

    ANAMICA: A Medical Data Visualisation and Characterisation .

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    This paper reports the design and implementation of ANAMICA, a three-dimensional (3-D) medical data visualisation and characterisation system which provides a complete set of image processing options. Constructions of internal surfaces from total or partial volume of 3-D data and cut-out views are supported by means of 'volume rendering' as well as object space methods. Arbitrary planar and curved sections of 3-D data can be obtained and processed subsequently as standard 2-D images. Volumetrics and a preliminary characterisation of tissues based on histograms are also supported. A window based user-interface provides convenient access to all these options

    The Schwinger SU(3) construction - I: Multiplicity problem and relation to induced representations

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    The Schwinger oscillator operator representation of SU(3) is analysed with particular reference to the problem of multiplicity of irreducible representations. It is shown that with the use of an Sp(2,R)Sp(2,R) unitary representation commuting with the SU(3) representation, the infinity of occurrences of each SU(3) irreducible representation can be handled in complete detail. A natural `generating representation' for SU(3), containing each irreducible representation exactly once, is identified within a subspace of the Schwinger construction; and this is shown to be equivalent to an induced representation of SU(3).Comment: Latex, 25 page

    INDIAN CLASSICAL MUSIC AS RECEPTIVE MUSIC THERAPY IMPROVES TRIDOSHIC BALANCE AND MAJOR DEPRESSION IN A PREGNANT WOMAN

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    It is known that music therapy is effective in various psychiatric disorders, but not much research has been done to assess effect of Indian classical music on psychiatric disorders. We report a 27-year-old pregnant female suffering from major depression for 3 years who was treated with receptive music therapy using Indian classical music. The selection of Raga (a specific melodic structure and pattern used in Indian classical music which has to be followed strictly) for her music therapy was based on her Tridoshic analysis as per Ayurveda and on Time Theory of Ragas. She was treated with 20 sessions of receptive music therapy; frequency of the sessions being 3 sessions per week. She was evaluated using Carroll Rating Scale for Depression and Tridosha evaluation before starting music therapy, after 10 sessions, and after 20 sessions of music therapy. At end of 20 sessions of music therapy, improvement was seen in all symptoms of depression and Carroll Rating Scale for Depression showed progressive improvement (pre-treatment score: 16, after 10 sessions: 11, after 20 sessions: 5). Her Tridosha evaluation also showed progressive changes towards improved balance between the Doshas (pre-treatment: Vata - 7, Pitta - 16, Kapha - 3; after 10 sessions: Vata - 9, Pitta - 14, Kapha - 6; after 20 sessions: Vata - 12, Pitta - 14, Kapha - 10). Further scientific studies are required to evaluate the concepts of Time Theory of Ragas, effect of Indian classical music on body physiology and psychology in both healthy and diseases states, and effect of music therapy on the Tridoshas

    Numerical Model Studies on Coastal Processes in a Critically Eroding Sector of South West Coast of India

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    Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv
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