774 research outputs found

    TRANSMISSION LINE FAULT DETECTION USING WAVELET TRANSFORM

    Get PDF
    Proper detection of various faults occurring on the transmission line is very essential. In this paper, detection and classification of some these faults is done based on the information conveyed by the wavelet analysis of power systems transients. Maximum norm values, maximum detail coefficient, energy of the current signals are calculated from the Wavelet Toolbox in MATLAB/Simulink. Maximum norm value and energy of the signals detects the fault and threshold detail coefficient classifies the fault into different types such as L-G, L-L-G, L-L-L

    Unparticle physics in diphoton production at the CERN LHC

    Full text link
    We have considered the di-photon production with unparticle at LHC. The contributions of spin-0 and spin-2 unparticle to the di-photon production are studied in the invariant mass and other kinematical distributions, along with their dependencies on the model dependent parameters. The signal corresponding to the unparticle is significant for moderate coupling constant values.Comment: 17 pages, 15 eps figure

    Cosmological Parameter Biases from Doppler-Shifted Weak Lensing in Stage IV Experiments

    Get PDF
    The advent of Stage IV weak lensing surveys will open up a new era in precision cosmology. These experiments will offer more than an order-of-magnitude leap in precision over existing surveys, and we must ensure that the accuracy of our theory matches this. Accordingly, it is necessary to explicitly evaluate the impact of the theoretical assumptions made in current analyses on upcoming surveys. One effect typically neglected in present analyses is the Doppler-shift of the measured source comoving distances. Using Fisher matrices, we calculate the biases on the cosmological parameter values inferred from a Euclid-like survey, if the correction for this Doppler-shift is omitted. We find that this Doppler-shift can be safely neglected for Stage IV surveys. The code used in this investigation is made publicly available.Comment: 8 pages, 1 figure. Accepted to Phys. Rev. D. Matches published version. Code available at https://github.com/desh1701/k-cut_reduced_shea

    Post-Limber Weak Lensing Bispectrum, Reduced Shear Correction, and Magnification Bias Correction

    Get PDF
    The significant increase in precision that will be achieved by Stage IV cosmic shear surveys means that several currently used theoretical approximations may cease to be valid. An additional layer of complexity arises from the fact that many of these approximations are interdependent; the procedure to correct for one involves making another. Two such approximations that must be relaxed for upcoming experiments are the reduced shear approximation and the effect of neglecting magnification bias. Accomplishing this involves the calculation of the convergence bispectrum; typically subject to the Limber approximation. In this work, we compute the post-Limber convergence bispectrum, and the post-Limber reduced shear and magnification bias corrections to the angular power spectrum for a Euclid-like survey. We find that the Limber approximation significantly overestimates the bispectrum when any side of the bispectrum triangle, i<60\ell_i<60. However, the resulting changes in the reduced shear and magnification bias corrections are well below the sample variance for 5000\ell\leq5000. We also compute a worst-case scenario for the additional biases on w0waw_0w_aCDM cosmological parameters that result from the difference between the post-Limber and Limber approximated forms of the corrections. These further demonstrate that the reduced shear and magnification bias corrections can safely be treated under the Limber approximation for upcoming surveys.Comment: 12 pages, 4 figures. Accepted by Phys. Rev. D. Matches published versio

    Transient simulation of LBE cooled CHTR under natural circulation with 3D multi-physics code ARCH-TH

    Get PDF
    India is developing a 100kWth Compact High Temperature Reactor (CHTR) to facilitate demonstration of technologies for high temperature process heat applications. CHTR is being designed as thorium based TRISO fueled and beryllium oxide moderated prismatic block type vertical core cooled with lead-bismuth eutectic (LBE) under natural circulation for 1000°C outlet. The new concept of high temperature core requires multi-physics multi-scale modeling based tools for investigating the normal operational behavior as well as anticipated transients of CHTR. In view of that, 3D multi-physics code ARCH-TH is being indigenously developed and validated for coupled neutronics-thermal hydraulic benchmarks. The multi-group diffusion based neutron kinetics in code ARCH-TH is integrated with thermal-hydraulic (TH) capability considering 1D- radial heat conduction in multi-channel system. The 1D based hydraulic in the code is capable to simulate the natural circulation phenomena of coolant in coupled parallel multi-channel system. The steady state operation and case of unprotected transient of control rod withdrawal in CHTR have been simulated with ARCH-TH. The rising transient power in CHTR is being assumed to be arrested with temperature feedbacks in the core cooled with natural circulation of molten metal coolant LBE. The variation of several key parameters defining neutronics and thermal hydraulics of CHTR have been predicted and discussed in detail. It has been found that peak fuel and coolant temperatures are well within the safety limits during transient of inadvertent withdrawal of control rod in CHTR operating at full power during initial core life cycle

    `Commerciality` in International Commercial Arbitration

    Get PDF
    Enterprises, the world over, now conduct business on a dramatically more international scale. The growth of world economies is directly connected with millions of commercial contracts, which are becoming more international in character owing to global integration. Commercial arbitration has been hailed as the most efficient form of dispute settlement available to participants in international trade. As the purpose of the commercial arbitration is to resolve commercial disputes, often issues have been raised whether a particular dispute is commercial or not. With globalisation and seamless trade the aspirations of global business community, it would be of immense importance to understand the meaning of ‘commercial’ as construed in ‘international commercial arbitration’ in some of the major jurisdictions of the world.

    Phenotypic Mismatches Reveal Escape from Arms-Race Coevolution

    Get PDF
    Because coevolution takes place across a broad scale of time and space, it is virtually impossible to understand its dynamics and trajectories by studying a single pair of interacting populations at one time. Comparing populations across a range of an interaction, especially for long-lived species, can provide insight into these features of coevolution by sampling across a diverse set of conditions and histories. We used measures of prey traits (tetrodotoxin toxicity in newts) and predator traits (tetrodotoxin resistance of snakes) to assess the degree of phenotypic mismatch across the range of their coevolutionary interaction. Geographic patterns of phenotypic exaggeration were similar in prey and predators, with most phenotypically elevated localities occurring along the central Oregon coast and central California. Contrary to expectations, however, these areas of elevated traits did not coincide with the most intense coevolutionary selection. Measures of functional trait mismatch revealed that over one-third of sampled localities were so mismatched that reciprocal selection could not occur given current trait distributions. Estimates of current locality-specific interaction selection gradients confirmed this interpretation. In every case of mismatch, predators were “ahead” of prey in the arms race; the converse escape of prey was never observed. The emergent pattern suggests a dynamic in which interacting species experience reciprocal selection that drives arms-race escalation of both prey and predator phenotypes at a subset of localities across the interaction. This coadaptation proceeds until the evolution of extreme phenotypes by predators, through genes of large effect, allows snakes to, at least temporarily, escape the arms race

    Guidance and Technology: An Assessment of Project Intervention and Promoted Technologies

    Get PDF
    This study used primary data, collected as part of theCereal Systems Initiative for South Asia (CSISA) project tocompare net returns and cost efficiency between farmers who arebeneficiaries of the project to farmers who are not beneficiaries.Additionally, non-beneficiary farmers who use the promotedtechnologies from the project are compared to other nonbeneficiaryfarmers who do not use the promoted technologies.Propensity score matching is used to account for selection biaswhen comparing the outcomes of beneficiary and control groups.Results indicate higher return for project recipients as well asfarmers who use the CSISA promoted resource-conservingtechnologies (RCTs)

    Electronic Structure And Vibrational Analysis Of Norclozapine (8-Chloro-11-Piperazine-1-Yl-5H-Dibenzo[B,E] [1,4]Diazepine)

    Get PDF
    Introduction: N-desmethyl clozapine or&nbsp;norclozapine is a benzodiazepine substituted with&nbsp;chloro&nbsp;and piperazino groups which is a major metabolite of&nbsp;clozapine; a potent and selective 5-HT2C&nbsp;serotonin&nbsp;receptor antagonist. It has a role as a metabolite, a delta-opioid receptor agonist, and a serotonergic antagonist. It is a&nbsp;dibenzodiazepine, a member of piperazines, and an organochlorine compound. Methods: The structure and the ground state energy of the molecules under investigation have been analyzed employing the DFT / B3LYP level. The optimized geometry and their properties such as equilibrium energy, frontier orbital energy, dipole moment, and vibrational frequencies have been used to understand the activity of Norclozapine. Results: The calculated highest occupied molecule orbital or HOMO and the lowest unoccupied molecular orbital or LUMO energies show that charge transfer within the molecule. The vibrational spectra of IR and Raman have been interpreted with the help&nbsp;of the B3LYP level of theory with the 6-31G basis set from the Density function theory. Conclusions: The optimized structural parameters such as bond lengths, and bond angle were determined at B3LYP level theory with a 6-31G basis set. Simulation work of Norclozapine is in process. Simulation report of Norclozapine we will report very soon. &nbsp
    corecore