Journal of Harmonized Research in Engineering

1-4

Authors: Mr. Prabeer Dash*, Dr.S.M.Ali

ABSTRACT: Green building (also known as green construction or sustainable building) refers to a structure and using process that is environmentally responsible and resource-efficient throughout a building's life-cycle: from sitting to design, construction, operation, maintenance, renovation, and demolition. This requires close cooperation of the design team, the architects, the engineers, and the client at all project stages. The Green Building practice expands and complements the classical building design concerns of economy, utility, durability, and comfort.

16-23

Authors: P. Sunil Kumar, M.G.Sumithra, M.Sarumathi, E.Praveen Kumar

OFDM (Orthogonal Frequency Division Multiplexing) technique has been widely adopted in many wireless communication systems due to its high data-rate transmission ability and robustness to the multipath fading channel. OFDM may be united with antenna arrays at the transmitter and receiver side to enhance the diversity gain and to improve the system competence on time-variant and frequency-selective channels, resulting in a multiple-input multiple-output (MIMO) composition. Multiple-input and single-output (MISO) is a case when the transmitter has multiple antennas and the receiver has a single antenna. Sometimes MISO technology is also called as transmit diversity technology. In this case, the same data is transmitted simultaneously from the two transmitter antennas. The receiver is then able to receive the optimum signal which it can then use to obtain and extract the required data. In this paper a comprehensive analysis of multi antenna MISOOFDM systems based on the Bit Error Rate performance in Rayleigh and Rician channels is discussed and analyzed. Similarly, Single Input Multiple Output (SIMO) is a form of smart antenna technology for wireless communications in which a single antenna at the transmitter and multiple antennas are used at the destination (receiver). An early form of SIMO, known as diversity reception, has been used by the military, commercial, amateur, and short wave radio operators at frequencies below 30 MHz since the First World War. The other forms of smart antenna technology include Single input Single output (SISO), Multiple Input Multiple Output (MIMO) and Multiple Input Single Output (MISO). A comprehensive literature survey on the performance analysis of different combining techniques in Rayleigh fading channels for multi antenna SIMO is also analyzed in this paper. Keywords— MISO, Multi antenna, Rayleigh, Rician

29-33

Authors: Aparna Chandran

A wireless sensor network consists of spatially distributed autonomous and efficient sensors to monitor environmental conditions and physical conditions. In wireless sensor network, one of the widely used techniques is data aggregation. There has been many related papers and works proposed to address this data aggregation technique. However less of them pay attention to the property of data integrity. An attacker can simply modify data to affect the decision of base station by compromised nodes. Therefore, a new efficient and secure data aggregation architecture is proposed to find the compromised nodes and help the base station to verify the final results. Keywords- Data Aggregation, Data Integrity, Sensor

39-44

Authors: Dr. Rajanna S

In the present investigation, aluminium alloy 6061 was used as the matrix material. Al6061 alloy has the highest strength and ductility of the aluminium alloys with excellent machinability and good bearing and wear properties The Al6061-graphite composites were prepared by the vortex method. The graphite contents used for the preparation of the composites were 0%, 1.5%, 2%, 2.5% and 3%..The effect graphite was studied by varying the percentage on ultimate tensile strength, percentage of elongation, compressive strength and hardness of the composite. Key words: Matrix, Graphite, Strength, Response