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This paper presents a microstrip patch antenna consisting of a rectangular patch with four circular slots incorporated into patch for C-Band Satellite Communication. The proposed antenna achieves an impedance bandwidth of 4.7 GHz (3.6 GHz to 8.3 GHz). Maximum reflection coefficient is achieved at 4.4 GHz i.e. −32 dB. Good reflection coefficient and radiation pattern characteristics are obtained in...
Photonic crystal fiber (PCFs) are the branch of silica based optical fiber where vent to pass the air are dig into the outer region of core and these seem to be moving ahead in the direction of axis of the parent fiber .PCF have been in acquaintance since the days when research in the region of light source based on silica was on the high. Crystal fibers are available in various architectures as to...
This paper presents two planar UWB MIMO antenna arrays designed from a compact novel CPW fed UWB antenna. The first MIMO antenna is made with lateral placement of the two proposed UWB antennas and second MIMO antenna is made with orthogonal placement of two UWB antennas and both MIMO antennas covers the entire UWB frequency band. The first MIMO antenna with lateral placement operates in frequency...
In this paper, a simplified technique is proposed which enables the user to nullify offset whenever power is switched on of the circuit and also based on the requirement of the user. In this method strain sensor is the part of the resistive bridge which is used as Quarter Bridge. The voltage excitation to the bridge is provided by a voltage reference. The output of the bridge reaches precision sensor...
A compact in size microstrip antenna with multiband resonance features is described in this paper. A circular antenna with the partial ground is used as a primary antenna which resonated for WiMAX band (3.3–3.7 GHz). Further, primary antenna embedded with mushroom shape EBG (Electromagnetic Band Gap) and periodic DGS (Defected Ground Structure) to operate over WLAN band (5.1–5.8 GHz) and X-band from...
Internet of Things (IoT) can be thought of as the next big step in internet technology. It is enabled by the latest developments in communication technologies and internet protocols. This paper surveys IoT in respect of layer architecture, enabling technologies, related protocols and challenges.
Thermal systems are being encountered in nearly all the engineering fields like heat exchangers, energy storage systems, pumps and pipe networks etc. Entropy generation analysis based on second law of thermodynamics is thus a natural want for the optimization of thermodynamic efficiency of engineering flow configurations including those involving porous medium like the one which has been modeled in...
In the era of sustainability, recycling of industrial waste material by using marble powder as filler in the Polypropylene matrix recommend an interesting opportunity. In this study, composites were fabricated by adding different weight percentages of marble powder (5–15 wt.%) in the Polypropylene by injection molding process. To evaluate the contribution of marble powder in the PP-marble composite,...
In this paper artificial neural network control technique is used for a nonlinear system. The nonlinear system for supervised control is considered in this paper is Inverted Pendulum which is well known problem for research due to it's highly nonlinear and unstable characteristics. Online ADALINE controller has been used here for control of system. ADALINE controller has the ability to adapt changes...
Data analysis of the textual data floating through social networking sites is being viewed as a promising source of knowledge people - the potential users and consumers of certain web application. The existing text mining techniques need to be correct and fast. Also, statistical classifiers like Naive Bayes are fast and easy to implement but do not perform well for imbalance text datasets or for datasets...
As the cloud storage is becoming center part for storing data remotely, user no longer store his data in local depository and user can access data from anywhere. Mostly the users store their data to public cloud, it reduces the storage management of data locally. But there are also security issues such as confidentiality, integrity and availability. Shen et al. [6] has proposed an effective integrity...
To meet the growing demand of food and other agriculture dependent commodities, crop producers in whole world are putting extra efforts to raise the production. They utilize chemicals, supplements, agro machinery, and special techniques without understanding the basic needs of soil ecosystem. It hampers the soil in long term conditions. Therefore to understand the actual needs of soil real time sensing...
Now a days, the Twitter has become a most trusted platform of on-line micro-texts (tweets) for monitoring the public sentiment for any entity (events, topic or products). In recent years, many approaches have been used for sentiment analysis of on-line micro-texts in a manner to predict the public opinion for real world entities. However, the accuracy of prediction is highly dependent on the accuracy...
System identification is the process of developing a mathematical model of a system using input and output knowledge of system. Identification of nonlinear system is well known problem due to its unpredictability and complexity. The nonlinear system for identification is Inverted Pendulum in this work which is well known benchmark system in control system theory due to it's highly nonlinear and unstable...
Decentralization of power supply, development and growing penetration of renewable energy, as well as increasing energy consumption require new models and techniques for sustainable and efficient power grids. Uncontrollable nature of renewable energy supply, such as weather-dependent solar and wind generation, leads us to the idea of production-oriented consumption, when consumers adapt to currently...
Failure of a task running on a Hadoop cluster is highly expensive in terms of computational time. A failure occurring even at the end phase of the task may cause the need to redo the entire task. Thus is really important to deploy fault tolerant techniques. Hadoop deploys a technique of checkpointing to prevent data loss. However, computational time-loss still pose a grim threat to critical applications...
Future low carbon generation scenario would see an enhanced grid penetration of green generation sources like wind and solar, thus replacing the traditional generators. This may lead to sudden imbalances between generation and load, leading to drop in system frequency. The low inherent inertia and primary frequency response (PFR) capability of these non-synchronous generators would result in large...
Solar Energy is one of the very promising renewable energy resources which have grown rapidly in the past few years and presently it is gaining popularity and momentum at an ever increasing rate. But there are also some limitations for trapping Solar Energy. A major disadvantage of trapping Solar Energy in photovoltaic cells is that it's operating point changes with changing insolation and temperature...
The paper proposes a Frozen Riccati Equation based approach for the construction of Lyapunov function to present a control law for the terminal voltage regulation in a post-fault transiently stable situation in a multi-machine power system. The test system is modelled in nonlinear singularly perturbed manner. Without linearization or complex solution of Hamiltonian-Jacobian Bellman equation, the gain...
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