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Sushan Konar 《Resonance》2006,11(4):91-99
This article deals with an example of the systematic round-off error that can be encountered in numerical computations. The
example is based on the recursion relation used for calculating higher powers of the golden mean. In the process, the link
between the golden mean and the Fibonacci sequence also becomes apparent. 相似文献
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在电子通讯中,签名私钥的安全性尤其重要,而解决这个问题的有效方法是把签名私钥分成若干部分并发放给多个私钥持有者.但是,通常来说在一般的门限签名中,要生成合法的签名,必然要有一定数量的私钥持有者参与签名.那么,这样的门限签名就不适用于服务器作为私钥持有者来参与门限签名.针对这个问题,本文提出一种高效的服务器协助门限签名方案.在该方案中,签名由用户提出,且用户持有的设备可以进行模指数运算.同时,只要新模集合能满足某些安全性质.方案中的模集合就能被新的模集合替换且不降低方案的安全性. 相似文献
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Sushan Acharya 《Compare》2019,49(2):211-229
Functional adult literacy interventions have been regarded for many decades by policy makers as an effective way of imparting health knowledge. Supported by research on the statistical relationships between women’s literacy rates and health indicators, this dominant policy discourse is based on assumptions that non-literate women lack understanding and confidence, and that formal programmes and institutions constitute the main sites of learning. Proposing a broader conceptualisation of literacy as a social practice and of health as connected with social justice, this article draws on policy analysis and the authors’ earlier research in Nepal to re-examine the relationship between gender, literacy and health. By comparing health and literacy approaches used within the education and health sectors and taking account of new and indigenous informal learning practices, the article points to ways of investigating the complex interaction of factors that influence inequalities in gender and health at community level. 相似文献
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Sushan Konar 《Resonance》2017,22(6):597-610
A star burns its nuclear fuel and balances gravitation by the pressure of the heated gas, during its active lifetime. After the exhaustion of the nuclear fuel, a low mass starfinds peace as a ‘white dwarf’, where the pressure support against gravitation is provided by Fermi-degenerate electrons. However, for massive stars, the gravitational squeeze becomes so severe that in the final phase of evolution, the average density approximately equals the nuclear density. At such densities, most of the protons combine with electrons to convert themselves into neutrons. A ‘neutron star’, composed of such neutron-rich material, is host to some fascinating physics arising out of its amazingly compact state of matter (where a solar mass is packed inside a sphere of radius ~ 10Km). 相似文献
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Sushan Konar 《Resonance》2017,22(5):475-484
During its active lifetime, a star burns its nuclear fuel, and gravitation is held off by the pressure of the heated gas. Gravity should take over once this fuel is exhausted unless some other agency saves the star from such a fate. Low mass stars find peace as ‘white dwarfs’ when the electrons settle into a Fermi degenerate phase where the pressure of degenerate electrons balance the gravitational pressure. 相似文献
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Udit Kr. Chakraborty Debanjan Konar Samir Roy Sankhayan Choudhury 《Education and Information Technologies》2016,21(1):171-184
Evaluating Learners’ Response in an e-Learning environment has been the topic of current research in areas of Human Computer Interaction, e-Learning, Education Technology and even Natural Language Processing. The current paper presents a twofold strategy to evaluate single word response of a learner in an e-Learning environment. The response of the learner to be evaluated would consist of errors committed due to lack of knowledge and also out of inadvertent mistakes committed while typing the answers. The proposed system benevolently considers such errors and still marks the learner partially. The feature incorporated in this work adds the human element to the mechanised system of evaluation and assessment in an e-Learning environment. 相似文献
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Sushan Konar 《Resonance》2017,22(4):389-398
Gravitation, the universal attractive force, acts upon all matter (and radiation) relentlessly. Stable extended structures can exist only when gravity is held off by other forces of nature. This series of articles explores this interplay, looking at objects that just missed being stars in this particular installment. 相似文献
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Sushan Konar 《Resonance》2017,22(3):225-235
Gravitation, the universal attractive force, acts upon all matter (and radiation) relentlessly. Left to itself, gravity would pull everything together, and the Universe would be nothing but a gigantic black hole. Nature throws almost every bit of physics–rotation, magnetic fleld, heat, quantum effects and so on, at gravity to escape such a fate. In this series of articles, we shall explore systems where the eternal pull of gravity has been held off by one or another such means. 相似文献