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Leaf nutrient levels are traditionally quantified by laboratory chemical analysis, which is time consuming and requires huge investment. The objective of this research is to estimate the nutrient content of groundnut leaves using an assembled visible near-infrared spectroradiometer (650-900 nm). This method is faster and requires less time and investment compared to conventional chemical analysis...
This paper analyses the impact of moment of inertia on a spinning spacecraft. Spacecraft moment of inertia distribution is represented in the form of product of inertia terms in system inertia matrix. The cross product of inertia (CPI) for the body axes in the transverse plane is used to control conic motion. The attitude controller controls the spin rate in the spin axis and the angular rate in the...
In an attempt to avoid the financial hurdle imposed by the physical constraints on objects orbiting in Low Earth Orbit (LEO), it is preferred to use High Elliptical Orbit (HEO) for broader coverage. It takes a huge amount of energy to be put objects in HEO. To provide similar benefits at a very low cost, the dasiaSpecial Orbitpsila was offered as an alternate. This paper examines the usability of...
Cross-site scripting (XSS) is the top most vulnerability in the Web applications as mentioned by research groups. Every day new evasion mechanisms are found by the hackers due to new technology, new HTML tags and script functionalities introduced. Zero-day attacks exploit the vulnerability before the fix could be issued to protect the Web application users. This demands an efficient approach on the...
Researchers and industry experts state that the Cross-site Scripting (XSS) is the top most vulnerability in the web applications. Attacks on web applications are increasing with the implementation of newer technologies, new html tags and new JavaScript functions. This demands an efficient approach on the server side to protect the users of the application. The proposed Signature based misuse detection...
There has been considerable increase in application layer attacks. Research surveys show that the cross site scripting (XSS) attack is most common among all the application layer attacks. Ajax Web technology, by design makes number of calls to the Web server to process a user request. This increases the bandwidth usage and response time due increase in the number of calls to the Web server. If security...
Research data shows that, about 80% of the web applications are vulnerable to cross site scripting attacks. This is because of the fact that the users are allowed to enter tags in the input control for increasing the flexibility in handling web applications input. This increases the threat to the web application by allowing the hackers to plant worms in the web applications through the features like...
The present study aims at bringing out the best features of model-based control, when applied to highly non-linear systems like pH-controlled fed-batch processes. For these processes, control of pH by conventional PID controller fails to provide satisfactory performance, because of the extreme non-linearity in the pH dynamics. In the present study, for a fed-batch neutralisation process, a non-linear...
A novel control for a gas turbine plant using fuzzy scheme is proposed. At the inlet, the compressor in the gas turbine plant is equipped with an adjustable inlet guide vane (IGV), which is controlling the airflow to the entire turbine at all load conditions. At any load change the IGV staggering angle is adjusted such, that the change in air mass flow keeps the turbine exhaust temperature at a constant...
Due to the extreme nonlinearity in the pH characteristics, control of pH in any chemical or biochemical process is a difficult task. Different approaches for pH control are proposed in various literatures. In the present study, control of pH neutralization process using neural and fuzzy controller is proposed. Initially a conventional linear controller is tried to control the pH at different linear...
A novel fuzzy based coordinated controller for thermal power plant is proposed. In this method, the energy input to the boiler would be matched to the energy demand by the turbine generator. The existing control schemes have difficulty to cope up with inherent time delay, nonlinearity due to uncertainty of the combustion process and frequent load changes. This paper presents the design of fuzzy controllers...
A novel design for combustion control of utility boiler using model reference fuzzy adaptive controller is proposed The main objective of the combustion controller in a thermal power plant is to regulate fuel and air in proper ratio to maintain the desired steam pressure at the turbine inlet, irrespective of the changes in steam demand. The existing control schemes have difficulty to cope up with...
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