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This paper focuses on robust passification for singular neutral systems with time varying delays and estimation of their domain of attraction considering bounded control effort (actuator saturation). The delays in states and state derivatives have upper and lower bounds. The system is assumed to have polytopic parametric uncertainties. Memory less state feedback controller for robust passification...
The recent efforts in Mobile Cloud Computing (MCC) focus on defining novel methods, policies and mechanisms for efficiently leveraging the services of cloud data centers for mitigating resources constraints in mobile devices. To test these newly developed methods and policies, researchers need tools for evaluating the hypothesis prior to deployment on the real time system. Simulation based approaches...
In the current era of digital communication, the use of digital images has grown high for expressing, sharing and interpreting information. While working with the digital images it is quite often that one needs to search for a specific image for a particular situation based on the visual contents of the image. Image retrieval by contents is one of the modern ways for searching huge digital image repositories...
This paper presents the mathematical modeling of coupled-tank system and designing of sliding mode control (SMC) for liquid level control in the system. The non-linear single-input single-output (SISO) mathematical model of plant is developed initially. A simulation is carried out using MATLAB/SIMULINK to control the non-linear model of coupled-tank system for a number of different conditions. The...
In this paper, we discuss the approach to efficiently place antennas to cover users within a telecommunication network. The main goal is to lower the power and utilities cost while covering all of the users within the telecommunication network. Four heuristics are proposed and compared.
The factors that influence the choice of suitable eye mask for a seeded DWDM link are presented. It is observed that two factors play a key role in determining the characteristics of the eye mask namely, bandwidth of the transmitter driver circuit and the transmitter RIN in conjunction with the input seed signal power. None of the well known eye masks fit well due to thicker ones level in a seeded...
The GPS data received by a receiver, embedded into a moving vehicle, encounter the distance inaccuracy due to close-in multipath of reflected signals of adjacent moving vehicles. The said inaccuracy cause a failure of sub-lane detection of the vehicle that pass through a specific lane. Increasing the sensitivity level of the received signals, the inaccuracy can be controlled up to a great extent....
In this paper, we propose the Sliding Mode Control (SMC) for a class of uncertain singular Neutral Time Delay Systems (NTDS) with time varying delays. An integral type sliding manifold is selected by considering the singular matrix. Delay dependent sufficient conditions are derived in terms of Linear Matrix Inequalities (LMIs) for robust passivity of sliding mode dynamics. The system is assumed to...
A RFID system's front-end consists of multiple tags being identified by a single (or multiple) reader. In order for the reader to uniquely identify all tags within certain range, some sort of anti-collision mechanism is required. ALOHA and its variations can be used in such a scenario. EPC Global, a standardizing body for RFID technology, has proposed a Dynamic Framed Slotted ALOHA mechanism for UHF...
In this paper we present a welding defect detection system using radiographic images. Main goal is to craft a dependable system because a human evaluator is not a stable evaluator besides other humanoid constraints. We present a novel technique for the detection and classification of weld defects by means of geometric features. Firstly noise reduction is done as radiographic images contain noise due...
A Robust fault detection filter(RFDF) is designed for discrete switched systems using H-/H_infinity performance index. Average dwell time constraints have been used for switching and the fault detection filter is designed with the assumption that the switching sequence is already known. RFDF is designed using the multiple Lyapunov function (MLF) approach. Projection lemma has been used for the purpose...
Wireless Sensor Networks (WSNs) are expected to find wide applicability and increasing deployment in near future. In this paper, we propose a new protocol, Threshold Sensitive Stable Election Protocol (TSEP), which is reactive protocol using three levels of heterogeneity. Reactive networks, as opposed to proactive networks, respond immediately to changes in relevant parameters of interest. We evaluate...
Due to the requirement of high throughput architecture for encrypted channels, an efficient implementation of hardware is needed. This can be achieved by using smart utilization of high end reconfigurable platforms. To achieve convincingly high throughput, an efficient non-pipelined style implementation of Advanced Encryption Standard (AES) with key size of 128-bit, for multigigabit protocols on Field...
We present real-time, stereo vision based autonomous landing system for small Unmanned Aerial Vehicles (UAV) onto an unknown landing target. The paper describes the algorithms and design of FPGA based co-processor implementing Artificial Neural Network (ANN) to implement real time object tracking, 3D position estimation using Visual Odometry(VO), Horizontal displacement and Euclidean distance from...
In this paper, we give a definition of the formal (denotational) semantics of MiniMaple (a substantial subset of a widely used computer algebra system Maple with slight modifications) and its specification language. Defining the formal semantics of MiniMaple and its specification language is rather a challenging task as these support non-standard types of objects, e.g. symbols, unions and polynomials,...
A digraph $G=(V, E)$ is \textit{upward planar} if it has a planar drawing with all edges pointing upward. A sub graph of a digraph with an upward planar drawing is called a {\it maximal upward planar sub graph} of if the addition of any edge in to causes non-upward planarity. Binucci \emph{et al.} showed that finding even the maximum upward planar sub graph...
Recent work has demonstrated the effectiveness of using complex networks for studying complex biological interactions. The process often involves conversion of biological data such as gene expressions or biochemical interactions into one of numerous complex network file formats. However, the exact selection of an appropriate file format for a particular dataset often poses a non-trivial decision problem,...
This paper presents comparison of different hierarchical (position and non-position based) protocols with respect to different mobility models. Previous work mainly focuses on static networks or at most a single mobility model. Using only one mobility model may not predict the behavior of routing protocol accurately. Simulation results show that mobility has large impact on the behavior of WSN routing...
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