1,386 research outputs found

    A Review on Various Image Restoration Techniques

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    Image restoration and improvement is the method of improving the looks of the digital image. The aim of this paper is introduce digital image restoration to the reader. There area unit varied varieties of noises like Gaussian, speckle, salt & pepper, etc, This paper discuss regarding image restoration based mostly on image improvement and image restoration exploitation image inpainting. The primary goal of the image restoration is that the original image is recovered from degraded or blurred or buzzing image. This paper contains the review of the many vivid schemes of image restoration that area unit based mostly on blind and non-blind rule exploitation varied transformation techniques. DOI: 10.17762/ijritcc2321-8169.15055

    A STUDY OF NOSTALGIA IN OLD AGE PEOPLE: EXPLORING MEMORIES OF ADULTHOOD

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    This study aims at identifying the nature of nostalgic memories experienced by the old age people in their past times, specifically young adulthood, as well as the emotions related to it. It also focuses on the impact of their past experiences on their present life aswell as future life. To study the individual nostalgic experiences, an interview method was used in which a total of 10 participants (5 married couples) were interviewed using a semi- structured questionnaire. The verbatims were then analysed using thematic analysis which shows their past life experiences, the best phase of their life, things that make them nostalgic, as well as people they remember from their past. The analysis of the data shows the significant past memories recalled by the participants and how things have changed with time. In addition to this, the present research also shows the differences in the experiences of males and females as well as the differences or similarities between spouses about the memories recalled from the past

    On Monetary Policy and Stock Price Relationship: Long and Short-run Dynamics

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    In this paper, we investigate the relationship between monetary policy and stock prices across advanced and emerging economies from January 1999 to December 2017. We also examine the impact of global monetary policy on the sample stock markets. Using the Structural Cointegrated Vector-Autoregressive model, we explore long-run equilibrium relationship and short-run dynamics of monetary policy and stock markets before and after the global financial crisis. Our results demonstrate that domestic policy rate and stock prices are often not tied together in long-term equilibrium relationships for a majority of the economies. Cross-sectional heterogeneity is observed as the relationship differs in terms of sign, magnitude and adjustment dynamics. Further, US monetary conditions are found to play an important role in influencing global output or liquidity conditions. Short-run dynamics reveal a positive impact of expansionary monetary policy shock on equity prices in those economies where transmission mechanism of monetary policy is weak. Further, we find limited response of central banks to domestic equity price shocks. The influence of US monetary policy shocks in driving equity prices is also found to be insignificant for a majority of the economies

    Differential cross sections and spin density matrix elements for the reaction gamma p -> p omega

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    High-statistics differential cross sections and spin density matrix elements for the reaction gamma p -> p omega have been measured using the CLAS at Jefferson Lab for center-of-mass (CM) energies from threshold up to 2.84 GeV. Results are reported in 112 10-MeV wide CM energy bins, each subdivided into cos(theta_CM) bins of width 0.1. These are the most precise and extensive omega photoproduction measurements to date. A number of prominent structures are clearly present in the data. Many of these have not previously been observed due to limited statistics in earlier measurements

    Exclusive ρ0\rho^0 electroproduction on the proton at CLAS

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    The epepρ0e p\to e^\prime p \rho^0 reaction has been measured, using the 5.754 GeV electron beam of Jefferson Lab and the CLAS detector. This represents the largest ever set of data for this reaction in the valence region. Integrated and differential cross sections are presented. The WW, Q2Q^2 and tt dependences of the cross section are compared to theoretical calculations based on tt-channel meson-exchange Regge theory on the one hand and on quark handbag diagrams related to Generalized Parton Distributions (GPDs) on the other hand. The Regge approach can describe at the \approx 30% level most of the features of the present data while the two GPD calculations that are presented in this article which succesfully reproduce the high energy data strongly underestimate the present data. The question is then raised whether this discrepancy originates from an incomplete or inexact way of modelling the GPDs or the associated hard scattering amplitude or whether the GPD formalism is simply inapplicable in this region due to higher-twists contributions, incalculable at present.Comment: 29 pages, 29 figure

    Effective Rheology of Bubbles Moving in a Capillary Tube

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    We calculate the average volumetric flux versus pressure drop of bubbles moving in a single capillary tube with varying diameter, finding a square-root relation from mapping the flow equations onto that of a driven overdamped pendulum. The calculation is based on a derivation of the equation of motion of a bubble train from considering the capillary forces and the entropy production associated with the viscous flow. We also calculate the configurational probability of the positions of the bubbles.Comment: 4 pages, 1 figur

    Performance of the CMS Cathode Strip Chambers with Cosmic Rays

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    The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Measured noise levels are low, with the number of noisy channels well below 1%. Coordinate resolution was measured for all types of chambers, and fall in the range 47 microns to 243 microns. The efficiencies for local charged track triggers, for hit and for segments reconstruction were measured, and are above 99%. The timing resolution per layer is approximately 5 ns

    The Cosmological Constant

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    This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the physics of a small (and potentially nonzero) vacuum energy.Comment: 50 pages. Submitted to Living Reviews in Relativity (http://www.livingreviews.org/), December 199

    π+\pi^+ photoproduction on the proton for photon energies from 0.725 to 2.875 GeV

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    Differential cross sections for the reaction γpnπ+\gamma p \to n \pi^+ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.725 to 2.875 GeV. Where available, the results obtained here compare well with previously published results for the reaction. Agreement with the SAID and MAID analyses is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been made up to 2.7 GeV. Resonance couplings have been extracted and compared to previous determinations. With the addition of these cross sections to the world data set, significant changes have occurred in the high-energy behavior of the SAID cross-section predictions and amplitudes.Comment: 18 pages, 10 figure

    The individual and combined effects of obesity- and ageing-induced systemic inflammation on human skeletal muscle properties.

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    BACKGROUND/OBJECTIVES: The purpose of this study was to determine whether circulating pro-inflammatory cytokines, elevated with increased fat mass and ageing, were associated with muscle properties in young and older people with variable adiposity. SUBJECTS/METHODS: Seventy-five young (18-49 yrs) and 67 older (50-80 yrs) healthy, untrained men and women (BMI: 17-49 kg/m(2)) performed isometric and isokinetic plantar flexor maximum voluntary contractions (MVCs). Volume (Vm), fascicle pennation angle (FPA), and physiological cross-sectional area (PCSA) of the gastrocnemius medialis (GM) muscle were measured using ultrasonography. Voluntary muscle activation (VA) was assessed using electrical stimulation. GM specific force was calculated as GM fascicle force/PCSA. Percentage body fat (BF%), body fat mass (BFM), and lean mass (BLM) were assessed using dual-energy X-ray absorptiometry. Serum concentration of 12 cytokines was measured using multiplex luminometry. RESULTS: Despite greater Vm, FPA, and PCSA (P0.05), while IL-8 correlated with VA in older but not young adults (r⩾0.378, P⩽0.027). TNF-alpha correlated with MVC, lean mass, GM FPA and maximum force in older adults (r⩾0.458; P⩽0.048). CONCLUSIONS: The age- and adiposity-dependent relationships found here provide evidence that circulating pro-inflammatory cytokines may play different roles in muscle remodelling according to the age and adiposity of the individual.International Journal of Obesity accepted article preview online, 29 August 2016. doi:10.1038/ijo.2016.151
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