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5篇 您的检索式:作者名="R.Shankar"
    题名 作者 年代 出处 被引量
1电子自旋-轨道耦合能的一种计算方法显示文摘R.Shankar 刘金海 1986大学物理1986,0,5:2
2Management of visceral leishmaniasis in rural primary health care services in Bihar, India显示文摘E.Hasker S. P.Singh P.Malaviya R. P.Singh R.Shankar M.Boelaert S.Sundar 2010Tropical Medicine & International Health2010,,:1
3Sedimentary sources and processes in the eastern Arabian Sea:Insights from environmental magnetism,geochemistry and clay mineralogy显示文摘The spatial distribution patterns of surficial sediment samples from different sedimentary domains(shallow to deep-sea regions) of the eastern Arabian Sea were studied using sediment proxies viz.environmental magnetism,geochemistry,particle size and clay mineralogy.Higher concentrations of magnetic minerals(high x_(lf)) were recorded in the deep-water sediments when compared with the shallow water sediments.The magnetic mineralogy of one of the shallow water samples is influenced by the presence of bacterial magnetite as evidenced from the x_(ARM)/x_(lf)^(vs).x_(arm_/x_(fd)biplot.However,the other samples are catchment-derived.The high correlation documented for x_(lf).anhysteretic remanent magnetisation(x_(arm)) and isothermal remanent magnetisation(IRM) with Al indicates that the deep-sea surficial sediments are influenced by terrigenous fluxes which have been probably derived from the southern Indian rivers,the Sindhu(the Indus) and the Narmada-Tapti rivers.A lower Mn concentration is recorded in the upper slope sediments from the oxygen minimum zone(OMZ) but a higher Mn/Al ratio is documented in the lower slope and deep-sea sediments.Clay minerals such as illite(24-48.5%),chlorite(14.1-34.9%),smectite(10.6-28.7%) and kaolinite(11.9-27.5%) dominate the sediments of shallow and deep-sea regions and may have been derived from different sources and transported by fluvial and aeolian agents.Organic carbon(OC) data indicate a low concentration in the shallow/shelf region(well oxygenated water conditions) and deeper basins(increased bottom-water oxygen concentration and low sedimentation rate).High OC concentrations were documented in the OMZ(very low bottom-water oxygen concentration with high sedimentation rate).The calcium carbonate concentration of the surface sediments from the continental shelf and slope regions(< 1800 m) up to the Chagos-Laccadive Ridge show higher concentrations(average = 58%) when compared to deep basin sediments(average = 44%).Our study demonstrates that particle size as well as magnetic grain size,magnetic minerals and elemental variations are good indicators to distinguish terrigenous from biogenic sediments and to identify sediment provenance.Kumar Avinash P.John Kurian Anish Kumar Warrier R.Shankar T.C.Vineesh Rasik Ravindra 2016Geoscience Frontiers2016,7,2:0
4耶鲁大学开放课程:基础物理力学、相对论和热力学显示文摘出版社:机械工业出版社1.这是一部在篇幅和体例上与国内基础物理教材都十分接近的世界知名教材2.附全课程双语字幕视频链接,以及全书配套练习题、测试题及解答链接3.网易同名视频公开课观看量已逾2000万。R.Shankar 刘兆龙 李军刚 2018物理与工程2018,28,1:0
5Timer Entrenched Baited Scheme to Locate and Remove Attacks in MANET显示文摘The Mobile Ad-hoc Network(MANET)is a dynamic topology that provides a variety of executions in various disciplines.The most sticky topic in organizationalfields was MANET protection.MANET is helpless against various threats that affect its usability and accessibility.The dark opening assault is considered one of the most far-reaching dynamic assaults that deteriorate the organi-zation's execution and reliability by dropping all approaching packages via the noxious node.The Dark Opening Node aims to deceive any node in the company that wishes to connect to another node by pretending to get the most delicate ability to support the target node.Ad-hoc On-demand Distance Vector(AODV)is a responsive steering convention with no corporate techniques to locate and destroy the dark opening center.We improved AODV by incorporating a novel compact method for detecting and isolating lonely and collaborative black-hole threats that utilize clocks and baits.The recommended method allows MANET nodes to discover and segregate black-hole network nodes over dynamic changes in the network topology.We implement the suggested method's performance with the help of Network Simulator(NS)-3 simulation models.Furthermore,the proposed approach comes exceptionally near to the original AODV,absent black holes in terms of bandwidth,end-to-end latency,error rate,and delivery ratio.S.Padmapriya R.Shankar R.Thiagarajan N.Partheeban A.Daniel S.Arun 2023Intelligent Automation & Soft Computing2023,,1:0
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