19,337 research outputs found

    A New Modified Collection Selection Algorithm using Optimal Term Weight for Web based Applications

    Get PDF
    As the number of electronic data collections available on the internet increases so does the difficulty of finding the right collection for a given query Often the first time user will be overwhelmed by the array of options available and will waste time hunting through pages of collection names followed by time reading results pages after doing an adhoc search Collection selection using optimal weight methods try to solve this problem by suggesting the best subset of collections to search based on a query This is of importance to fields containing large number of electronic collections which undergo frequent change and collections that cannot be fully indexed using traditional methods such as spiders This paper presents a solution to these problems of selecting the best collections and reducing the number of collections needing to be searche

    Mimo Detection

    Get PDF
    The use of digital wireless communication systems has become more and more common during recent years. A multiple-input-multiple-output (MIMO) system techniques can be implemented to enhance the capacity of a wireless link. We have investigated the performances of MIMO detectors : Linear detectors(ZF detector, MMSE detector), SIC(Successive Interfer- ence Cancellation) signal detectors, Maximum Likelihood detector, Sphere decoding. In SIC signal detection we use MMSE weight matrix

    Design of Fractional Order Digital Differentiators and Integrators Using Indirect Discretization

    Get PDF
    Mathematics Subject Classification: 26A33, 93B51, 93C95In this paper, design of fractional order digital differentiators and integrators using indirect discretization is presented. The proposed approach is based on using continued fraction expansion to find the rational approximation of the fractional order operator, s^α. The rational approximation thus obtained is discretized by using s to z transforms. The proposed approach is tested for differentiators and integrators of orders 1/4 and 1/2. The results obtained compare favorably with the ideal characteristics

    Superconductivity in doped FeTe1-xSx (x= 0.00 to 0.25) single crystals

    Full text link
    We report self flux growth and characterization of FeTe1-xSx (x= 0.00 to 0.25) single crystal series. Surface X-ray diffraction (XRD) exhibited crystalline nature with growth in (00l) plane. Micro-structural (electron microscopy) images of representative crystals showed the slab-like morphology and near stoichiometric composition. Powder XRD analysis (Rietveld) of single crystals exhibited tetragonal structure with P4/nmm space group and decreasing a and c lattice parameters with increase in x. Electrical resistivity measurements (R-T) showed superconductivity with Tconset at 9.5K and 8.5K for x =0.10 and x =0.25 respectively. The un-doped crystal exhibited known step like anomaly at around 70K. Upper critical field Hc2(0), as calculated from magneto transport for x =0.25 crystal is around 60Tesla and 45Tesla in H//ab and H//c directions. Thermal activation energy [U0(H)] calculated for x =0.10 and 0.25 crystals followed weak power law, indicating single vortex pinning at low fields. Mossbauer spectra for FeTe1-xSx crystals at 300K and 5K are compared with non superconducting FeTe. Both quadrupole splitting (QS) and isomer shift (IS) for S doped crystals were found to decrease. Also at 5K the hyperfine field for x =0.10 superconducting crystal is decreased substantially from 10.6Tesla (FeTe) to 7.2Tesla. For x =0.25 crystal, though small quantity of un-reacted Fe is visible at room temperature, but unlike x =0.10, the low temperature (5K) ordered FeTe hyperfine field is nearly zero.Comment: 20 Pages Text + Figs: Accepted Mat. Res. Exp, Mat. Rex. Exp. (2018

    Estimation and Determinants of Chronic Poverty in India : An Alternative Approach

    Get PDF
    The paper conceptualizes chronic poverty by using the spaces of income and nutrition and estimates its incidence among states and social groups. It also aims to improve our understanding of the determinant of chronic poverty by considering economic, demographic and social factors. It attempts to answer the following questions : How important a determinant of chronic poverty is household income? What factors inhibit escape from chronic poverty? How different are the other poor from chronic poor? The analysis uses the unit level NSS and NFHS data.Chrinic Poverty, India

    Estimation and determinants of chronic poverty in India: An Alternative approach

    Get PDF
    The paper conceptualizes chronic poverty by using the spaces of income and nutrition and estimates its incidence among states and social groups. It also aims to improve our understanding of the determinant of chronic poverty by considering economic, demographic and social factors. It attempts to answer the following questions: How important a determinant of chronic poverty is household income? What factors inhibit escape from chronic poverty? How different are the other poor from chronic poor? The analysis uses the unit level NSS and NFHS data.

    A Revise On Ambler Stream Behavior Beside Pavement

    Get PDF
    We can find mixed traffic conditions, which mean that the flow routes include all kinds of vehicles like bicycles, bikes, cars, etc. During peak hours, the influx of NMVs is high. The presence of NMV in the transportation system affects traffic characteristics such as speed, volume and river flow. In order to plan a route, it is essential to understand how to travel. For mixed traffic conditions, the river behaviour is difficult to understand. In this article, an attempt is made to study the behavioural characteristics of NMVs in river mixtures. The entire project consists of two parts. The first is the sample section and the last is the sample section test. The first part of the study includes studying the basic foundations and finding potentials of the group and collateral settlement of the group to obtain the information obtained from the various parts of Guntur. The change in NMV ratio was viewed as a problem present in the model such as velocity, density, and flow. In a background study, it was observed that in one sector of transport traffic, the large number of NMVs occupying the left side and MVs occupying most of the area due to our Indian transport behaviour are left-handed and easy for the MV to pass slowly. In the case of two lanes intersecting, the traffic limit is available in the middle section but the lower part is in the left and right parts in light of the fact that vehicles are in fill in that
    corecore