European Journal of Advances in Engineering and Technology

14-19

Authors: A Masood and MU Zuberi

The objective of this work is to determine if a relationship could be found between dielectric strength and other basic properties of electrical insulating materials such as volume resistivity, dielectric constant or relative permittivity and dissipation factor or loss tangent, on empirical basis, by using variables predicted by basic theory. A simple equation to predict the dielectric strength of a solid insulating material in the ambient medium has been proposed using ASTM electrode system. Also, Artificial neural network theory is used to predict the value of dielectric strength of solid insulating materials provided thickness of insulation, volume resistivity, dissipation factor and dielectric constant are known and the results thus obtained have been compared with those obtained by the proposed equation.

26-29

Authors: Supriya Deshpande and SC Dharmadhikari

All smart phones have features like camera and touch screen, these features may lead to different types of attacks on smart phones. Modern smart phone platforms let users customize their device via third-party applications found on “app stores” or traditional websites. Application originality is a problem so users are constantly at risk of installing malicious apps that stealthily take away personal data or gain root access to devices. This paper reviews new security threats that occur frequently for mobile. It also shows novel user interface attacks on Android-based cell phones focusing on showcasing the conceivable alleviation strategies for such attacks. This Paper also discusses various attacks on different computer components like browser and ad libraries, such as UI Readdressing attack and Sidewinder attack.

37-39

Authors: OS Lamba, VK Saxena, LM Joshi, D Pal, D Kant and A Bandhopadhyay

The paper deals with the design study of pillbox-type reduced waveguide RF window[1] for 5 GHz klystron. Numerical simulation of the window has been carried out using the software “CST MW Studio”. The proposed window is designed for 5 GHz operating frequency for handling a few kilowatts of RF power. The simulated results are validated through experiments. In the proposed window geometry, metalized alumina disc (99.5 % purity) of diameter 56 mm and thickness 1.5 mm is brazed in a cylindrical waveguide of diameter 56 mm. The cylindrical waveguide is terminated to WR 187 waveguide at its one end and 8 mm reduced height waveguide on the other end of the window. The return loss and insertion loss of the window length 26.7 mm has been found to be –34.88 dB and - 0.014 dB respectively. The bandwidth of 60 MHz is achieved.

45-48

Authors: Joyanta Pal, Manish Pal, Pankaj Kumar Roy and Asis Mazumdar

Rudrasagar Lake is one of the prominent tourist destinations in north eastern part of India which surrounds Neermahal Palace. It is also declared as Ramsar site (i.e. a wetland of international importance). The surrounding Lake area was initially developed based on the fishing activity in the lake, although later on people started agricultural activity too. People in the surrounded village area of the Lake mainly use groundwater for fulfilling their water demand, in spite of the presence of the Lake. Even for irrigation purpose groundwater is used. Moreover, treated water is not available to all the households in the nearby village area. Whereas the excess water of the lake is discharged into the river, through connecting Kachigang channel, without proper utilization. In this study a quantitative assessment of water of Rudrasagar lake has been done for possible use of drinking and Irrigation etc. For the evaluation of quantity of water, the hydrologic simulation model has been used using HEC-HMS software. From the observation of model discharge of the Lake water, for various season viz. Pre Monsoon, Monsoon and Post monsoon during the period 2006-2015, it has been found that minimum discharge is 0.41m3/s during pre monsoon and maximum discharge is 6.77m3/s during monsoon. So, using the available water, during pre monsoon 50 liters per person per day of water can be supplied to every household and during monsoon the quantity is above 135 liters. Beside this for irrigation purpose also the excess water may be supplied to the local farmer.

55-59

Authors: Amit Kumar Sharma, Gaurav Rajoria, Ravinder Singh Chauhan and Sawan Sharma

A single-phase five-level PWM inverter is presented to alleviate harmonic components of the output voltage and the load current. Operational principles with switching functions are analyzed. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signal were used to generate PWM signals for the switches. The inverter offers much less total harmonic distortion and can operate at near-unity power factor. The proposed system is verified through simulation and is implemented in a prototype.