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A Decision based restoration algorithm using Unsymmetrical Trimmed Mode filter for gray scale images that are corrupted by salt and pepper noise is proposed. The processed pixel is examined for 0 or 255; if checked pixel is equal to 0 or 255, then it is considered as noisy pixel else not noisy. If the pixel is noisy and all the four neighbors are noisy then replace the noisy pixel with mean of 4 neighbors...
Today, communication systems face major shortages in availability of free spectrum. Cognitive radio has evolved as the most feasible technology which can empower us to effectively utilize the available spectrum. A vital component of a Cognitive Radio Network is spectrum sensing, i.e. its ability to detect the presence of a primary user. This paper employs an adaptive threshold detection algorithm...
Technology development has paved the way for enhancement of safety features in a car which has become an important buying factor for customers. Such enhancement demands more computing power. The Electronic Control Units with multicore architecture can be a solution. This offers parallelism which improves the response time of the system. In this paper, Electronic Stability Control and Antilock Braking...
According to the Launder's principle, in binary for each bit loss information kTln2 of heat is dissipated. All the present designs like CMOS are irreversible logics which losses bit information. Reversible logic is the better way of reducing power consumption. Bit loss always give the more power consumption but here by recovering bit loss using reversible logic we are getting less power consumption,...
In the last few years in addition to analyzing data in time domain (time series data), analytics in space domain has gained equal prominence. Geographical Information Systems (GIS) play a key role in analyzing and visualizing spatial data. In this paper we study 3 different license free GIS tools namely Quantum GIS, gvSIG and GRASS GIS.We compare and evaluate them in terms of support for third party...
Cryptography and Encryption methods are means to ensure confidentiality of data transferred from one computer to another. While design of appropriate security protocols is vital for information security, making sure that they are implemented accurately and effectively is even more important. Effective implementation of encryption algorithms and security protocols involves implementing big number arithmetic...
The popularity of open source technologies is growing day to day across the globe and especially in education sector. Open source attracts developers and is motivated by numerous factors including openness, reliability, audit ability, stability, cost, flexibility and freedom. Learning Management System (LMS) is online software that simplifies learning. Number of open source Learning Management Systems...
Micro Electro Mechanical Systems (MEMS) are systems based on a diversity of technologies whereby tiny mechanical elements with excellent system properties can be implemented. The substrate properties such as relative permittivity, relative permeability and electrical conductivity is varied and its effects on electric field distribution, displacement and potential is analyzed in MEMS EVA tunable filters...
Orthogonal Frequency Division Multiplexing (OFDM) power line communication (PLC) systems perform better with the implementation of efficient bit loading techniques. In this paper, improvement in raw bit rates for PLC is obtained by using the combination of greedy incremental bit loading algorithm and the concept of multiwire PLC with multiple electrical connections between transmitter and receiver...
Wireless sensor networks (WSNs) are large networks comprised of small sensor nodes, which are capable of sensing data from the surrounding environment, and forwarding the data collected from other sensor nodes to the sink. For energy efficient operation of WSNs, considerable research has been going on in the area of Medium Access Control (MAC) protocol design. The IEEE 802.15.4 MAC has been designed...
In this paper an RF microelectromechanical (MEMS) tunable bandpass filter is designed for 3–4.2 GHz and the effect of substrate parameters was analyzed. The bandpass filter is achieved by adjusting the coupling parameters of microstrip resonator. The microstrip resonator is designed by coupling more than one microstrip lines resulting in the independent tuning of center frequency, bandwidth and quality...
Micro Electro Mechanical Systems (MEMS) Switches have become very popular in the Electronics industry and we need to carefully select beam material and structural parameters for reliability and better performance. A variety of materials can be used as beam material in RF MEMS switches. The cantilever beam is used to change the state of RF switch and for actuation is made mostly using aluminum, copper,...
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