3,089 research outputs found

    Intelligence And Teacher’s Rating Of Creativity Among Grade V Children: A Study Of Gender Differences

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    The study was designed to examine the relationship between Teacher’s rating of creativity and WISC-R performance of Grade V children. The sample consisted of 40 subjects between 8 to 10 years of age, 20 each from boys and girls. The subjects were randomly selected from five different schools. The subjects were categorized into six groups of boys and girls as high, moderate, and low in IQ. The means and Standard Deviations for all the six groups of subjects revealed that creative potential is directly    related to the IQ of the subjects. Creativity is prominently observed among the children of high IQ than among moderate and low IQ children. Boys tended to show more creative potential than girls. High IQ boys and girls respectively show 0.81 and 0.55 correlation coefficient with their creativity score. Those correlations for moderate IQ children are 0.57 and 0.38, while that of low IQ children are 0.26 and 0.24 respectively for boys and girls.  Hence, they are rated as higher in creativity than girls. The present study highlights a smooth positive relationship between creativity and intelligence. Keywords: Intelligence, Creativity, Teacher’s rating, WISC-

    Effect of coal size and process variables on coal cleaning efficiency in an air dense medium fluidized bed

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    The quality of India coal is poor because of high ash content. Some improvement in its quality can be brought using different coal cleaning methods. Wet cleaning methods like Heavy media separator and jigging are extensively in use but they have some limitations like they produce large amount of coal slurry which is difficult to dispose and they degrade friable coal. To overcome these limitation dry cleaning method can be employed and air dense medium fluidized bed is one of the most economic and efficient method. The separation in the fluidized bed greatly depends on the process variables of the gas solid two phase flow. In this project the effect of coal size and process variables on the coal cleaning efficiency is studied using Basundhara coal and magnetite as bed material. The coal cleaning experiments were carried out on three size fraction of coal i.e. -12+10mm,-10+5mm and -4.75+1mm.The efficiency were expressed in terms of percentage enrichment, percentage ash rejection, percentage combustible recovery and separation efficiency. The maximum separation efficiency of 10.5% is achieved for -10+5mm size fraction. It was observed that batch should operate at a flow rate of 50-60lpm and between coal to magnetite weight ratio of 0.2 to 0.3 for maximum separation

    ENGINEERING PROKARYOTIC PHOSHOLIPASE A2

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    Ph.DDOCTOR OF PHILOSOPH

    Forecasting currency exchange rate time series with fireworks-algorithm-based higher order neural network with special attention to training data enrichment

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    Exchange rates are highly fluctuating by nature, thus difficult to forecast. Artificial neural networks (ANN) have proved to be better than statistical methods. Inadequate training data may lead the model to reach suboptimal solution resulting, poor accuracy as ANN-based forecasts are data driven. To enhance forecasting accuracy, we suggests a method of enriching training dataset through exploring and incorporating of virtual data points (VDPs) by an evolutionary method called as fireworks algorithm trained functional link artificial neural network (FWA-FLN). The model maintains the correlation between the current and past data, especially at the oscillation point on the time series. The exploring of a VDP and forecast of the succeeding term go consecutively by the FWA-FLN. Real exchange rate time series are used to train and validate the proposed model. The efficiency of the proposed technique is related to other models trained similarly and produces far better prediction accuracy

    Kinetic arrest related to a first-order ferrimagnetic to antiferromagnetic transition in the Heusler compound Mn2PtGa

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    We report a magnetization study of the Heusler compound Mn2PtGa that shows the existence of a magnetic-glass state. Mn2PtGa shows a first-order ferromagnetic (FM)/ferrimagnetic (FI) to antiferromagnetic (AFM) transition in contrast to the martensitic structural transition observed in several Heusler alloys. The kinetic arrest of this first-order FM (FI) to AFM transition leads to the observed magnetic-glass behavior. We show that the strength of the applied magnetic field, which is the primary parameter to induce the magnetic-glass state, is also responsible for the stability of the supercooled FM (FI) phase in time.Comment: 3 pages, 4 figure

    Resolving the Topological Classification of Bismuth with Topological Defects

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    Bulk boundary correspondence in topological materials allows to study their bulk topology through the investigation of their topological boundary modes. However, for classes that share similar boundary phenomenology, the growing diversity of topological phases may lead to ambiguity in the topological classification of materials. Such is the current status of bulk bismuth. While some theoretical models indicate that bismuth possesses a trivial topological nature, other theoretical and experimental studies suggest non-trivial topological classifications such as a strong or a higher order topological insulator, both of which hosts helical modes on their boundaries. Here we use a novel approach to resolve the topological classification of bismuth by spectroscopically mapping the response of its boundary modes to a topological defect in the form of a screw dislocation (SD). We find that the edge mode extends over a wide energy range, and withstands crystallographic irregularities, without showing any signs of backscattering. It seems to bind to the bulk SD, as expected for a topological insulator (TI) with non-vanishing weak indices. We argue that the small scale of the bulk energy gap, at the time reversal symmetric momentum LL, positions bismuth within the critical region of a topological phase transition to a strong TI with non-vanishing weak indices. We show that the observed boundary modes are approximately helical already on the Z2\mathbb{Z}_2 trivial side of the topological phase transition. This work opens the door for further possibilities to examine the response of topological phases to crystallographic topological defects, and to uniquely explore their associated bulk boundary phenomena

    Pharmacological activity and biochemical interaction of zingerone: a flavour additive in spice food

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    Zingerone (4-(4-Hydroxy-3-methoxyphenyl)-2-butanone) is one of the non-volatile and nontoxic compounds of ginger. It is also called vanillylacetone with a crystalline solid form which is sparingly soluble in water and more soluble in ether. The contribution of this compound in ginger is about 9.25%. The chemical structure is made of a phenolic ring with methoxy group attached to benzene ring. Gingerol can be heated to form zingerone by retroaldol reaction. It has been reported that zingerone has multiple pharmacological activities. It is effective against diarrhoea causing enterotoxigenic bacteria that leads to infant death. It is also used against intestinal gastric, oxidative stress, weak immunity, obesity. During its activity against cancer, it governs the expression of different cell cycle protein and TGF-?1 expression. Antioxidant response is controlled by inducing the activity of ROS neutralising enzymes like superoxide dismutase, catalase and glutathione reductase. It can also reduce various inflammations by restricting the activity of interleukins. This review summarizes the multiple pharmacology activities of zingerone against various important diseases like cancers, tumors, inflammations, oxidative conditions, microbial infections, biofilm formations, thrombosis and other diseases. In addition, the molecular regulation of these pharmacological responses by zingerone is also critically discussed
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