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In a heterogeneous networking environment vertical handover decision plays a very crucial role in the overall handover process. Many parameters and techniques have been proposed in the literature for selecting a best network available at a particular instance of time. Since user satisfaction is one of the ultimate aim of vertical handover process and different users can have different preferences...
Image steganography is a technique of masking secret information (e.g. text, image, audio, video etc.) in a cover image in order to protect the information from being modified or destroyed. Owing to its simplicity and hiding capacity, Least Significant-Bit (LSB) insertion in spatial domain techniques is a very popular approach of hiding information in a cover image. This paper presents a new algorithm...
Often Multi Criteria Decision Making (MCDM) techniques are used to assist in deciding a best choice, or alternative, in many different types of environment. Analytic Hierarchy Process (AHP) is one of the most popular MCDM technique used in variety of domains. It not only generates numerical order of alternatives that indicates an order of preference among them but also reflect there intensity or cardinal...
This paper presents cable sizing procedure and effect of the cable length on induction motor dynamic performance. Motor and cable selection, to accommodate competing motor starting requirements, are the classical challenges facing EPC contractors and motor designers during the planning and designing stages of new Industrial facilities. The cable size & length has impact on both starting current...
Cloud computing is not a new technology, it is a new way of delivering computing resources. Elastic cloud computing enables services to be deployed and accessed globally on demand with little maintenance by providing QoS as per service level agreement (SLA) of customer. The Cloud-based DDoS attacks or outside DDoS attacks can make ostensibly legitimate requests for a service to generate an economic...
Available simulators for testing Hardware Descriptive Language (HDL) codes provide output with respect to simulator clock. This output is not sufficient for the analysis of Field Programmable Gate Array (FPGA) based embedded controllers. The embedded controllers give actuation signal to the plant and receives plant output as the feedback signal. Therefore a coupling between embedded and plant simulators...
In this paper investigates the design of edge cooled single-disc CVD-diamond window for 120 GHz, 1MW gyrotron. The design of RF window for 120 GHz, 1MW gyrotron has been carried out using the CST microwave studio. In 120 GHz gyrotron single disc of diameter 90 mm and thickness 2.0 mm CVD diamond window has been used in the simulation. The return loss (S11) and transmission loss (S21) of the 120 GHz...
In this paper, we present further applications of the timedomain simulation based frequency scanning technique which has been proposed in the earlier literature. The behavior of the complete HVDC system is modelled as the closed loop action of two independent systems (AC system and DC system). The separately obtained frequency scan results of these independent systems are used to get the frequency...
Software Quality attributes are the overall factors that affect run-time behavior, system design, and user experience. They represent areas of concern that have the potential for application wide impact across layers and tiers. Quality attributes such as maintainability, reusability & testability are useful to find out the how much extent software is useful to undergo changes during the usage...
There has been a lot of interest in mining the time series data. Stock data mining plays an important role to visualize the behavior of financial market. In financial data mining the data is normally represented in the numeric format, however, the symbolic representation is also used to evaluate the overall impact. Time series data are difficult to manipulate, but when they are treated as symbols...
currently there exists no single model to represent a database and it ancillary systems. One has to resort to a number of conceptual models to depict the system based on requirements. Through this paper we present the alternate ways of viewing and visualizing a database in its entirety making use of the thickness of the screen as an additional dimension. One of our prime motives is also to inculcate...
In this paper study of cavity and window has been carried out using Ansoft HFSS for Terahertz Gyrotron. Eigen mode analysis of the cavity has been carried out at 1THz. An idea about the operating modes in the cavity of the Gyrotron and obtained the simulated Eigen frequency and field pattern of the modes. The design of window for 1 THz Gyrotron has also been carried out using HFSS. The simulated results...
In this paper thermal analysis of the slow-wave structure for Ku-band helix space TWT has been carried out using ANSYS software v.10.1. To evaluate the thermal aspects of the helix slow-wave structure with three APBN support rods and barrel assembly, the related studies of the slow-wave structure assembly with six turn, ten turn and sixteen turn of helix for the Ku-band 140 W space TWT during extreme...
In this paper Eigen mode analysis has been carried out using Ansoft HFSS for high frequency 120 GHz, 140 GHz, 170 GHz, 503GHz and 1000 GHz gyrotron cavity. Eigen mode analysis has an idea about the excitation of the operating modes in the cavity of the gyrotron and obtained the simulated eigen frequency and field pattern of the modes. The CPU time on Pentium-4, 2.99 GHz system with 4 GB RAM was less...
A 3D-hollow-waveguide based tunable-mirror is proposed to realize widely tunable and temperature insensitive photonic devices. The giant tuning in wavelength of 150-nm is reported, exhibiting much larger tuning efficiency than that of slab hollow-waveguide-mirrors.
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