The testing of the scale parameter of the 2-parameter exponential distribution was considered when the two parameters are unknown. Three tests were derivedand the modified rank set sampling procedure was used one of the tests was truncated sequential test . The power functions were derived and calculations of them were reported . The truncated sequential test led to earlier decision whereby the expected value of the number of cycles was less than the number of cycles used in the fixed sample size .

Keywords: Two –parameters exponential ,Modified Ranked set Sampling Truncated sequential Test .

Autonomous robot is a type of the robot which can perform operation accurately in any environment. Currently, the demands of robots are increasing in the industry; the autonomous robots suffer from the path planning and obstacle avoidance. To overcome this, many approaches have been proposed but due the noisy environment, it is difficult for the robots to perform navigation. In this work, we proposed an efficient model for the robot navigation using neural networks and to overcome the path planning, kinematics based model is presented. By utilizing the kinematics based stability model, we are able to achieve the stability condition of the robot and it is used for the controlling the speed of the robot. Neural network is used for the obstacle prediction and avoidance. The simulation result presented that the proposed model is robust to noisy (hindrance) environment and it is able to avoid the obstacle precisely at the maximum speed of 0.02 to 1.0 m/s.

Keywords: Minimum 7 keywords are mandatory. Keywords should closely reflect the topic and should optimally characterize the paper. Use about four key words or phrases in alphabetical order, separated by commas. Introduction

India is one of the developing countries that is laying lot of stress on infrastructure development. With the increase in construction at a fast pace, usage of concrete is increasing day by day. Cement is one of the main ingredients of concrete. The production of 1 ton of cement leads to emission of one ton of CO2, which is responsible for emission of green house gases leading to global warming. To reduce environmental pollution caused by the production of Portland cement, the use of waste material was felt. Geopolymer concrete made by using source material rich in silica and aluminium and alkaline liquid as a binder can be used to replace the Portland cement .Hence, an aluminosilicate polymer ,Geopolymer was invented by Prof Davidovits. In addition, GPC also utilizes the abundantly available materials such as fly ash, rice husk, GGBS and foundry sand that are waste by products & not easily disposed. Geopolymer concrete doesn't use any cement, the production of cement shall be reduced and hence the pollution of atmosphere by the emission of carbon dioxide shall also be reduced. In this paper, the change in the abrasion resistance of Geopolymer concrete was observed with the change in the curing temperature.

Keywords: abrasion resistance, aluminosilicate , CO 2,geopolymer concrete, global warming, fly ash, waste material.

Traffic signs provide valuable information about the road and play a vital role in safe and smooth driving. But, while driving at high speed, these signs might get missed. To tackle with such problem, the automatic road sign recognition system has been introduced. This system helps in improving driver assistance system which is a development in Intelligent Autonomous Vehicles technique. This paper discusses about the various existing methods used in detection and recognition of traffic signs, the challenges that occur in dealing with live images and lastly concludes with a chronological and brief tabulation of all the referred work.

Keywords: Road signs, Colour, Shape, Pixel, Detection, Recognition, Template.

A Heat Recovery Steam Generator or HRSG is an energy recovery heat exchanger that recovers heat from a hot gas stream. The HRSGs are generally fitted in the downstream of a Gas Turbine to recover the Turbine Exhaust Gas (TEG) heat. The HRSG is typically used to produce steam that can be used in a cogeneration process or is used to drive a steam turbine in a combined cycle system. The temperatures in TEG will vary from 350°C to 650oC depending on the class of the upstream Gas turbine. The HRSG is designed with a supplementary firing system to augment its steam output. A supplementary firing system comprises of a log type duct burner arrangement mounted on the inlet duct of HRSG. Duct burner system in the HRSGs is capable of raising the exhaust temperatures from 350°C - 650oC to 600°C - 900oC or even up to 1000°C. In a duct burner arrangement, fuels like oil and gas can be fired in separate dedicated oil burners and gas runners stacked at multiple elevations similar to a log. Fuel gases like Natural gas fired runners are most commonly used in duct burners and the oxygen required for combustion of natural gas is utilized from the Gas turbine Exhaust.-

Keywords: Heat Recovery Steam Generator, Gas runner, Flame Stabilizers, Stoichiometric air, Computational Fluid Dynamic Analysis, etc.,.