IMPACT : International Journal of Research in Engineering & Technology

1-12

Authors: A. Jaya Lakshmi, J. Swetha & G. N. Swamy

Cognitive radios (CRs) are regarded as a promising solution for alleviating this spectrum underutilization problem by enabling unlicensed users. In traditional ad hoc networks, broadcasts are conducted on a common channel, which is shared by all nodes in the network. However, in cognitive radio ad-hoc networks, unlicensed users may observe heterogeneous spectrum availability, which is unknown to other unlicensed users before the control information was broadcast. In this project, a Quality-of-service (QoS)-based broadcast protocol under Blind Information for multi-hop CR ad hoc networks, i.e., QB2IC is proposed with the aim of having a high success rate and short broadcast delay. In enhancement work a technique was proposed to provide seamless communication in most of the environment, such as communication can be done with and without infrastructure and we have enhanced our base work with the multi transmitter to get channel information in blind environment.

11-20

Authors: Archit Tomar & Rahul

Hybridization of a vehicle is one of the praising step as the substitution of conventional vehicle and also one of the best alternative solution to reduce the amount of automotive emissions that why these vehicle over a last decade gain great attention due to eco friendly nature and lower green house gas emission as compare to conventional vehicle .But due to expensiveness and limited driving range hybrid vehicle is not getting too much approbation from consumer side. This paper present comprehensive overview of hybrid vehicle, new technology and, energy storage unit used in these vehicle and also comparing the CO2 emission between the conventional vehicle and hybrid vehicle and to make understand why need to adopt the hybrid vehicle and also discussion of policies that is adopted by governments of different countries globally for the promotion of hybrid vehicle. Conclusion is discussed finally.

45-48

Authors: KIRAN M SANNAKKI & SANJITH J

Present study investigates the effect of coal bottom ash as partial replacement to sand in concrete. The bottom ash was procured from Adani power plant Udupi, and partially replaced with sand. Compressive strength characteristics of M40 grade concrete were studied with of bottom ash varying from 0% (Conventional concrete), 10%, 20%, and 30% replacement and at different curing periods. Analysis of results showed that maximum strength of 49.56 N/mm2 by replacing 20% of bottom ash as replacement fine aggregate

59-68

Authors: SANCHIT BAJAJ1 & S. B. SINGH2

Earthquakes are one of the main reasons of the collapse of the structures every year. Many research studies have been focusing on decreasing the impact of seismic waves on the structures. For this, initially there were many passive techniques introduced to decrease the damage caused due to earthquakes. But since the late twentieth century, the focus has shifted to introduce active techniques which are meant to absorb the seismic waves or do not let the waves propagate through the building. Passive techniques are based on decreasing the lateral loads on a structure while the others alter the seismic waves that propagate through the structure. This study is primarily a review of most of the construction techniques designed to resist the earthquakes in masonry and reinforced concrete framed structures. Moreover, some common methods for these structures have also been highlighted. In all these methods, various aspects pertaining to the seismic behaviour of that particular method have been discussed based on the previous research work. Finally, the main conclusion drawn is that whatever method is being chosen based on the location and material availability, it should be properly designed and detailed.