With the widespread use of harmonic generating devices, the control of harmonic currents to maintain a high level of power quality is becoming increasingly important. An effective way for harmonic suppression is the harmonic compensation by using active power filter. This paper presents a comprehensive survey of active power filter (APF) control strategies put forward recently. It is aimed at providing a broad perspective on the status of APF control methods to researchers and application engineers dealing with harmonic suppression issues. Many control techniques have been designed, developed, and realized for active filters in recent years. This paper presents different types of Synchronous reference frame methods for real time generation of compensating current for harmonic mitigation and reactive power compensation. All the techniques are analyzed mathematically and simulation results are obtained which are being compared in terms of its compensation performance with different parameters under steady state condition. The three techniques analyzed are the Synchronous Reference Frame Theory (SRF), SRF theory without synchronizing circuit like phase lock loop (PLL) also called instantaneous current component theory and finally modified SRF theory. Simulation results are obtained under sinusoidal balanced voltage source balanced load condition. The comparison and effectiveness of all the methods is based on the theoretical analysis and simulation results obtained with MATLAB employing a three phase three wire shunt active filter test system. Finally shunt active power filter is applied to BLDC drive application. THD plots with and without APF is presented.

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In present days, the up-and-coming cloud-computing model is rapidly in advance force as an unconventional to traditional information technology. Cloud computing make available a scalability environment for emergent amounts of data and processes that work on a variety of services and applications by means of on-demand self-services. One fundamental aspect of this model shifting is that data are being centralized and outsourced into clouds. This category of outsourced storage space services in clouds have turn out to be a new profit growth point by given that a comparably low-cost, scalable, location-independent policy for managing clients' data. The cloud storage service (CSS) mitigates the load of maintenance and storage management. However, if such a significant service is weak to attacks or failures, it would take permanent losses to users since their data or records are stored into an unsure storage space pool outside the enterprises. These security risks move about in the direction of from the following reasons: the cloud infrastructures are much more authoritative and reliable than personal computing devices. If they are still susceptible to security threats both from inside and outside the cloud for the benefits of their control, there exist various motivations for cloud service providers (CSP) to behave falsely toward the cloud users in addition, the dispute infrequently suffers from the lack of trust on cloud service provider. As a result, their behaviors may not be known by the cloud users. Therefore, it is necessary for cloud service providers to offer a scalable audit service to check the integrity and accessibility of the stored data. While Cloud Computing makes these advantages more appealing than ever, it also brings new challenging security threats towards users' outsourced data. Since cloud service provider is separate administrative units, data outsourcing is actually resigning user's control over the destiny of their data. The correctness of the data in the cloud is being put at risk due to the subsequent reasons. First of all, although the infrastructures beneath the cloud are much more powerful and reliable than private computing devices, they are silent facing the broad range of both internal and external threats for data integrity.

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In this paper, data mining study about the Health of Undergraduate Engineering Students. This dissertation use the feature selection algorithm based on clustering methods to analyze the importance of health and well-being in students is exemplified by the large number of studies on this topic. Past research has focused on using surveys to identify factors that affect the health, but applying machine learning tools to such data has not received much attention. Moreover this dissertation presents the comparative study between the Correlation based feature selection algorithm and the Minimum Redundancy and Maximum Relevance feature selection (mRmR), these two algorithms can be applied to the engineering students based data, for analysis the health.

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In this paper, Intrusion Detection System (IDS) based on combining data mining is presented and implemented in WEKA. this exposure, in our works, we use a wired data base Knowledge Discovery Data Mining (KDD) CUP 10Percent and a Data Mining Tools Waikato Environment for Knowledge Analysis (WEKA) we check the results by using a several evaluations parameters. The results illustrate that a very high detection rate for certain attacks types. we proposed to calculate the mean value via sampling different ratios of normal data for each measurement, which lead us to reach a better accuracy rate for observation data in real world This presents useful information in intrusion detection.

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Virtual Reality-A computer simulated environment which enables a person to experience a physical places and objects in imagined world. Virtual Reality enables to recreate virtual sensory experience like virtual taste, smell, touch or sound etc. This paper shall address virtual reality along with its various types and give brief idea on the implementation of it.

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this paper proposes a power switching system based on op-amp and flip flop. The main objective is to design a shockproof power switching system for controlling power supply to electrical appliances via Light Dependent Resistor (LDR). This system consists of an op-amp, JK flip-flop, relay, Bi-polar Junction Transistor (BJT), Light Dependent Resistor (LDR). The system is designed to detect the change in the intensity of the light in the surroundings to perform the switching action. Several tests have been conducted to test and validate the proposed prototype in different environment. As conclusion, a shockproof switching system can be achieved reducing the chances of hazardous electrical shocks because of no physical contact with the switch.

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