Raghavendra K. Ramesh

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Current standard security practices do not provide substantial assurance about information flow security: the end-to-end behavior of a computing system. Noninterference is the basic semantical condition used to account for information flow security. In the literature, there are many definitions of noninterference: Non-inference, Separabil-ity and so on.(More)
ad ZnO based varistors are widely used for overvoltage protection in many electrical and electronic circuits, at voltages ranging from a few to over a million volts. By careful control of the microstructure, through nano-structuring by chemical routes, it should be possible to produce varistors with high breakdown voltage (V c), as this is proportional to(More)
Cloud Computing is an emerging concept in global IT world. It refers to a computing system in which the task is assigned over the internet by on-demand and pay on utilization basics. Most organizations are not willing to accept the cloud computing concept due to some security issues, even though some potential gain is there in cloud computing. Security is(More)
The design and implementation of circularly polarized substrate integrated waveguide (SIW) antenna in X Band is presented in this paper. The substrate integrated waveguides represents the family of substrate integrated circuits which is planar in nature and used for the transmission of electromagnetic energy. In this paper the design techniques for(More)
For ultrawideband (UWB) applications, a compact multiple-input-multiple-output (MIMO) antenna prototypes are proposed. The first prototype is with a dimension of 40 &#x00D7; 40 mm<sup>2</sup>. The design consists of seven squares surrounding a center square in which the ground plane is partially implemented. In the second prototype, a compact(More)
A broadband electrical metamaterial is proposed in this paper to improve the performance of microstrip antenna. With the help of metamaterial we can improve bandwidth of microstrip antenna as well as miniaturize it. The properties and applications of metamaterial, three half split ring resonator metamaterial and the performance of a system contributing two(More)
In this paper a circular patch antenna with a slot is investigated in details for ultra wideband application. A 50 ohm microstrip feed line is used for exciting the antenna. The antenna resonates at multiple frequencies of 4.8 GHz, 5.5 GHz, 9 GHz and 12 GHz respectively with a bandwidth of 2 GHz and 5.2 GHz and can be effectively utilised for several(More)
Synopsis Finland's parliament has recently approved a joint venture with Russia to build a VVER 1200 MWe, design AES-2006 pressurized water reactor which 'complies with the IAEA and EUR requirements' of a generation-III (Gen-III). AES-2006 design has not undergone the Gen-III assessment process. Its parent-design AES-92 which was certified as Gen-III in(More)
Synopsis Finland's parliament has recently approved a joint venture with Russia to build a VVER 1200 MWe, design AES-2006 pressurized water reactor which according to the vendor 'complies with the IAEA and EUR requirements' of a generation-III (Gen-III) reactor in northern Finland. However, design AES-92, which was certified as Gen-III in 2007, is missing(More)
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