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印度塔米尔那杜地区堪雅库玛里与奥瓦利之间海岸区域海啸灾后评估——事例分析(英文)

地学前缘 2009年第6期16卷 129-137页

作者： S.Saravanan N.Chandrasekar C.Hentry M.Rajamanickam J.Loveson Immanuel p.siva subramanian Centre for Geo-Technology Manonmaniam Sundaranar University Marine Geochemistry Research Lab Spic Research CentreV.O.C.College Department of physics St.Jude's College

海岸带是动态地区,由于众多因素,包括海平面的上升、波浪与洋流的类型、飓风乃至人类的影响,海岸地区经常受到变动。2004年12月26日巨大海啸席卷了堪雅库玛里至奥瓦利之间的海岸。当海浪冲上海滩时波高达30英尺。许多人因为巨浪的冲击... 详细信息

海岸带是动态地区,由于众多因素,包括海平面的上升、波浪与洋流的类型、飓风乃至人类的影响,海岸地区经常受到变动。2004年12月26日巨大海啸席卷了堪雅库玛里至奥瓦利之间的海岸。当海浪冲上海滩时波高达30英尺。许多人因为巨浪的冲击和退浪的强力推拉而淹死在海里,许多村庄被毁。死亡总数超过300人,而且财产损失严重。海啸的规模与洋底移动的面积、移动距离是有关系的。该区显示为海成阶地、沙丘、滩脊、河口、洪积平原、海滩、红树林、准平原、高地、海蚀崖等等。我们试图通过现场在线勘查、政府记录以及采用遥感技术所做的海岸地貌研究等资料,通过海滩剖面测量和海岸环境的变化,进行海岸线动力学研究。文中也对主要的破坏予以认定。

关键词：海啸波浪生态冲击

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Ensemble Variable Selection for Naive Bayes to Improve Customer Behaviour Analysis

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Computer Systems Science & Engineering 2022年第4期41卷 339-355页

作者： R.siva subramanian D.prabha Anna University Chennai600025India Department of Computer Science and Engineering Sri Krishna College of Engineering and TechnologyCoimbatore641008India

Executing customer analysis in a systemic way is one of the possible solutions for each enterprise to understand the behavior of consumer patterns in an efﬁcient and in-depth *** investigation of customer patterns helps theﬁrm to develop efﬁcient decisions and in turn,helps to optimize the enter-prise’s business and maximizes consumer satisfaction *** con-duct an effective assessment about the customers,Naive Bayes(also called Simple Bayes),a machine learning model is ***,the efﬁcacious of the simple Bayes model is utterly relying on the consumer data used,and the existence of uncertain and redundant attributes in the consumer data enables the simple Bayes model to attain the worst prediction in consumer data because of its presumption regarding the attributes ***,in practice,the NB pre-mise is not true in consumer data,and the analysis of these redundant attributes enables simple Bayes model to get poor prediction *** this work,an ensem-ble attribute selection methodology is performed to overcome the problem with consumer data and to pick a steady uncorrelated attribute set to model with the NB classiﬁ*** ensemble variable selection,two different strategies are applied:one is based upon data perturbation(or homogeneous ensemble,same feature selector is applied to a different subsamples derived from the same learning set)and the other one is based upon function perturbation(or heterogeneous ensemble different feature selector is utilized to the same learning set).Further-more,the feature set captured from both ensemble strategies is applied to NB indi-vidually and the outcome obtained is ***,the experimental outcomes show that the proposed ensemble strategies perform efﬁciently in choosing a steady attribute set and increasing NB classiﬁcation performance efﬁciently.

关键词： Naive bayes or simple bayes variable selection homogeneous ensemble heterogeneous ensemble customer prediction

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Characterization and bacterial toxicity of lanthanum oxide bulk and nanoparticles

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Journal of Rare Earths 2012年第12期30卷 1298-1302页

作者： Brabu Balusamy Yamuna Gowri Kandhasamy Anitha Senthamizhan Gopalakrishnan Chandrasekaran Murugan siva subramanian Kumaravel Tirukalikundram S Nanotechnology Research Center SRM University GLR Laboratories private Limited Department of physics Indian Institute of Technology-Madras GLR Laboratories private Limited WillinghamCambridge

This study evaluated the bacterial toxicity of lanthanum oxide micron and nano sized particles using shake flask method against gram-positive （Staphylococcus aureus） and gram-negative （Escherichia coli, pseudomonas aeruginosa） bacteria. particle size, morphology and chemical composition were determined using scanning electron microscopy （SEM） and energy dispersive X-ray spectroscopy （EDS）. Results indicated that lanthanum oxide nanoparticles showed antimicrobial activity against Staphylococcus aureus, but not against Escherichia coli and pseudomonas aeruginosa. It was speculated that lanthanum oxide produced this effect by interacting with the gram-positive bacterial cell wall. Furthermore, lanthanum oxide bulk particles were fotmd to enhance the pyocyanin pigment production in pseudomonas aeruginosa.

关键词： lanthanum oxide: nanoparticles: bacterial toxicity: pyocyanin rare earths

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Adélie penguins and temperature changes in Antarctica: a long-term view

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Integrative Zoology 2012年第2期7卷 113-120页

作者： Craig D.MILLAR Sankar subramanian Tim H.HEUpINK siva SWAMINATHAN Carlo BARONI David M.LAMBERT Allan Wilson Centre for Molecular Ecology and Evolution University of Auckland Griffith School of Environment and School of Biomolecular and physical Sciences Griffith UniversityAustralia Environment protection Training and Research Institute HyderabadIndia Department of Earth Sciences University of PisaPisaItaly

During the summer months,Adélie penguins represent the dominant biomass of terrestrial *** millions of individuals nest in ice-free areas around the coast of the ***,these modern populations of Adélie penguins have often been championed as an ideal biological indicator of ecological and environmental changes that we currently *** addition,Adélie penguins show an extraordinary record of sub-fossil remains,dating back to the late *** this time,temperatures were much lower than ***,this species offers unique long-term information,at both the genomic and ecological levels,about how a species has responded to climate change over more than 40000 years.

关键词： Adélie penguins climate change global warming penguin evolution

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Studies on antimicrobial activity and brine shrimp lethality of crude samples of six different species of puffer ifshes

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Journal of Coastal Life Medicine 2015年第7期 515-517页

作者： Masilamani Mohan Raj subramanian Bragadeeswaran Anbukkarasu Suguna Muthuramalingam Uthaya siva Centre of Advanced Study in Marine Biology Faculty of Marine SciencesAnnamalai UniversityParangipettai-608502TamilnaduIndia

Objective:To evaluate the antimicrobial activity and brine shrimp lethality activity of six different species of puffer fishes,includingCyclichthys orbicularis,Diodon holocanthus,Canthigaster solandri,Arthron hispidus,*** andLagocephalua inermis(***).Methodology:The puffer fishes were collected from Annangkovil Fish Landing Centre(Lattitude 11°30.47'N;Longitude 79°47.02'E),parangipettai,Southeast Coast of India during summer season because of *** tissue samples were collected from the clearly washed specimens,extracted with methanol at 37°C for 3 days and filtered through Whatman No.1 filter *** solvents such as methanol and ethanol were concentrated by using rotary evaporator under reduced *** dark brown gummy mass was stored at 4°C for further *** crude samples were analysed with human pathogens to assess the antibacterial activity and this was carried out by using standard disc diffusion *** brine shrimp lethality was calculated as the percentage of mortality which was firstly calculated by dividing the number of dead larvae by the total number and then multiplied to 100%.Results:The antibacterial activity of crude extract of puffer fishes were exhibited against 10 different human bacterial *** the ten human pathogens,Arthron hispidus showed maximum zone of inhibition(8 mm)againstStaphylococcus aureus *** showed minimum activity(1 mm)againstproteus mirabilis and no zone of inhibition was observed againstStaphylococcus *** shrimp lethality was examined with six puffer fish *** orbicularis showed maximum mortalities as 100%*** showed minimum mortalities as 70%at a concentration of 500μg/***:In conclusion,the study showed the preliminary investigation of crude extracts of puffer fishes about the prominent activity against human bacterial *** extracts had a good cytotoxic potential against brine shrimpArtemina salina.

关键词： puffer fishes Human pathogens Antimicrobial activity Brine shrimp lethality

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