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In this paper, a circularly polarized microstrip patch antenna is designed using metasurface as superstrate to achieve enhanced gain, so as to make it desirable for practical communication purposes. A parametric study of the effect of variation in the air gap between two substrates and variation in the truncation length of metasurface patches with antenna characteristics is conducted. The results from the parametric study are used to determine optimized values of the different parameters of antenna to get the optimum results and performance. The design and simulation of the antenna is carried out using CST Microwave Studio 2016 simulation software. The return loss is below -10dB from 6.91GHz to 7.94GHz with an impedance bandwidth of 8%. The gain obtained for antenna without superstrate is 4.33dB. A maximum gain of 6.08dB is achieved at 7.24GHz for proposed antenna with superstrate. A significant increase of 1.7dB in gain is hence achieved by the proposed stacked layer. The axial ratio is less than 3dB within the operating frequency range of 6.91 GHz to 7.57GHz which comes under the impedance bandwidth of antenna. The VSWR is less than 2 within the frequency range of 6.91GHz to 7.57GHz. The proposed antenna prototype has been fabricated and tested using VNA and anechoic chamber facility in order to verify the simulated results. Within fabrication tolerances, the agreement with the simulations has been satisfactory.

As more and more enterprises are looking forward to leveraging the connected network of Facebook to capture inputs and feedback on their brands, it is becoming increasingly important to mine the unstructured information from Facebook. The recent advances in open source software technologies in the map reducing paradigm opens up a whole new opportunity for such advanced analytics. This paper illustrates the use of open source technologies for brand sentiment analysis from Facebook data.

The aim of our study is to construct a Humanoid with enhanced bipedal walk, which can be utilized in the Medical Sector, as an effective substitute for Artificial Limbs. With reference to the human body, we have designed a humanoid such that the joints are exposed to zero friction, and the efficiency of the motor is increased. The natural phenomenon in the human to adjust the center of gravity and forces in the body can be implied in the humanoid as well. In-order for a better walk, proper force distribution can be compared with that of the human. Variable load carrying capacity and variable shock absorption is aimed at. In the detailed study carried out for this Project, all the dimensions of the major bones of the leg were measured and the range of movements at all the joints has been determined. We also discuss the various movements of the leg and certain values depicting the contact surface area of the Knee joint during movement have been deduced. An innovative leg design has been presented, which will enhance the walking, jumping and running of the robot.