34 research outputs found

    Highly-parallelized simulation of a pixelated LArTPC on a GPU

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    The rapid development of general-purpose computing on graphics processing units (GPGPU) is allowing the implementation of highly-parallelized Monte Carlo simulation chains for particle physics experiments. This technique is particularly suitable for the simulation of a pixelated charge readout for time projection chambers, given the large number of channels that this technology employs. Here we present the first implementation of a full microphysical simulator of a liquid argon time projection chamber (LArTPC) equipped with light readout and pixelated charge readout, developed for the DUNE Near Detector. The software is implemented with an end-to-end set of GPU-optimized algorithms. The algorithms have been written in Python and translated into CUDA kernels using Numba, a just-in-time compiler for a subset of Python and NumPy instructions. The GPU implementation achieves a speed up of four orders of magnitude compared with the equivalent CPU version. The simulation of the current induced on 10^3 pixels takes around 1 ms on the GPU, compared with approximately 10 s on the CPU. The results of the simulation are compared against data from a pixel-readout LArTPC prototype

    Household energy and environmental analysis to highlight the impact of modern energy access in Bangladesh

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    Access of modern energy is the critical challenge in many developing countries to improve the socio-economic status and quality lifestyle. This paper illustrates the comparative energy and environmental analysis among three categories residential household in a developing country Bangladesh. The households are categorized based on types of energy access, since different communities adopted combination of different types of energy access. The aim of this study is to reflect the impacts of modern energy access and better combination the types of energy access in residential household to emphasize how to mitigate residential energy loss, reduce energy expenses, avoid limited fossil resources, reduce environmental impact, enhance modern facilities and improve the way of life. The study reveals that, household having combination of electricity access, metered gas connection and adoption of modern cooking appliances would be better option recommended in this study compared with other options

    Frozen-State Hierarchical Annealing

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    Abstract. There is growing demand for methods to synthesize large im-ages of porous media. Binary porous media generally contain structures with a wide range of scales. This poses difficulties for generating accu-rate samples using statistical techniques such as simulated annealing. Hierarchical methods have previously been found quite effective for such problems. In this paper, a frozen-state approach to hierarchical anneal-ing is presented that offers over an order of magnitude reduction in com-putational complexity versus existing hierarchical techniques. Current limitations to this approach and areas of further research are discussed.

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    Not AvailableSoybean is the most important oilseed crop in the world due to its high oil (20%) and protein (40%) content. Productivity of soybean in India is low. Poor genetic variability in soybean is an important factor of low yield. Wide hybridization was attempted between cultivated genotype DS9712 and wild type accession DC2008-1. Isolating from the segregating population in F2:6 generation, 206 RILs were developed and tested for two consecutive years i.e. kharif 2014 and 2015. Enormous variability was observed among the RILs for phenotypic traits including yield. Genetic polymorphism was studied with 317 SSR markers, out of which 206 were polymorphic (~65% polymorphism). Distribution of the polymorphic markers was not uniform on the chromosomes. Tri-nucleotide repeat motif SSR markers were more polymorphic than others. About 8 markers showed distorted segregation. Linkage map was constructed with 194 markers. Total length of the map was 1823.71cM with an average marker spacing of 9.21cM. The RILs and the molecular map produced in the study will be suitable for mapping and analyzing QTLs for yield and other related traits in soybeanNot Availabl
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