In this paper we have adapted Bahl and Tuteja (1991) estimator in systematic sampling using auxiliary information. Using Bedi (1996) transformation an improved estimator is also proposed under ...systematic sampling. The expressions of bias and mean square error up to the first order of approximation are derived. It has been shown that the proposed estimator performs better than many existing estimators. A numerical example is included to support the theoretical results.
This paper proposes a class of ratio type estimators of finite population variance, when the population variance of an auxiliary character is known. Asymptotic expression for mean square error (MSE) ...is derived and compared with the mean square errors of some existing estimators. An empirical study is carried out to illustrate the performance of the constructed estimator over others.
An 11-year-old child presented with plastic iridocyclitis and hypopyon. Subsequent paracentesis revealed leukemic infiltrates. A bone marrow biopsy confirmed the diagnosis of acute lymphocytic ...leukemia. Because of this unusual case of leukemic hypopyon, we advocate anterior chamber paracentesis and pediatrician referral in all cases of refractory uveitis. Ophthalmic Surg Lasers 2002;33:163-165
This paper proposes a general family of estimators for estimating the population mean in systematic sampling in the presence of non-response adapting the family of estimators proposed by Khoshnevisan ...et al. (2007). In this paper we have discussed the general properties of the proposed family including optimum property. The results have been illustrated numerically by taking an empirical population considered in the literature.
The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) is designed to study the atmospheric neutrinos and antineutrinos separately over a wide ...range of energies and path lengths. The primary focus of this experiment is to explore the Earth matter effects by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. This study will be crucial to address some of the outstanding issues in neutrino oscillation physics, including the fundamental issue of neutrino mass hierarchy. In this document, we present the physics potential of the detector as obtained from realistic detector simulations. We describe the simulation framework, the neutrino interactions in the detector, and the expected response of the detector to particles traversing it. The ICAL detector can determine the energy and direction of the muons to a high precision, and in addition, its sensitivity to multi-GeV hadrons increases its physics reach substantially. Its charge identification capability, and hence its ability to distinguish neutrinos from antineutrinos, makes it an efficient detector for determining the neutrino mass hierarchy. In this report, we outline the analyses carried out for the determination of neutrino mass hierarchy and precision measurements of atmospheric neutrino mixing parameters at ICAL, and give the expected physics reach of the detector with 10 years of runtime. We also explore the potential of ICAL for probing new physics scenarios like CPT violation and the presence of magnetic monopoles.
Complexes of alpha-methyl-(2-thiophenomethylene) aryloxyacetic acid hydrazides with Cu(II) and Zn(II) metal salts were synthesized and characterized by elemental analysis, molecular weight ...determination, molar conductance, and magnetic moment and spectroscopic techniques. In these complexes, the ligands form a conjugate O-N-S tridenate system, thus coordinating with metal through oxygen of the carbonyl group, nitrogen of azomethine, and sulphur of thiophenemoiety. Octahedral geometry is proposed for all the complexes. Antifungal activity of the ligands and their Cu(II) and Zn(II) complexes was determined against plant pathogenic fungi viz. Alternaria alternata, Rhizoctonia solani, Colletotrichum capsicum, and Glomeralla cingulata at 28 degrees C. Antibacterial activity of ligands and their metal complexes was determined on gram positive Bacillus subtilis and gram negative Escherichia coli bacteria at 37 degrees C by the serial dilution method. In some cases an increase in biocidal activity of the ligands on coordination with metal ions was observed in terms of minimum inhibitory concentration (MIC) values.
An 11-year-old child presented with plastic iridocyclitis and hypopyon. Subsequent paracentesis revealed leukemic infiltrates. A bone marrow biopsy confirmed the diagnosis of acute lymphocytic ...leukemia. Because of this unusual case of leukemic hypopyon, we advocate anterior chamber paracentesis and pediatrician referral in all cases of refractory uveitis.
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