Ethnobotanical Studies of Sacred Aegle marmelos Plant
Ethnobotany is a multidisciplinary science defined as the interaction between plants and people. The relationship between plants and human culture is not limited to the use of plants or food, clothing, and shelter but also includes their use of religious ceremonies, ornamentation and health care. In the past, ethnobotanical research was predominantly a survey of the plant used by villagers. A trained botanist identified the plants and recorded their uses. Sometimes an anthropologist was present to translate the disease descriptions, but rarely was a physician available to identify the disease. In this paper, we discussed 8 plants that selected from the total work associated with the topic.
Published by: Gurudatta Yogesh, Dr. Amrendra Kumar Jha
Author: Gurudatta Yogesh
Paper ID: V3I6-1304
Paper Status: published
Published: November 28, 2017
Design of DC Architecture for Large-Scale Non-Grid-Connected Wind Power Generation System
In this paper, a dc architecture for large-scale non-grid-connected wind power generation system (WPGS) is presented. Unlike the existed wind farms, the proposed structure has the merits of eliminated reactive power, low power loss, long transfer distance, and etc. With the purpose to overcome the effects of integrating large wind power plants into utility systems, a creative concept of direct integration of high energy consumption industry (HECI) with large scale WPGS where the fluctuant power or whole power is consumed by the HECI. A three-phase full-bridge high power step-up dc/dc converter is adopted to meet the implementation of the system. Compared to the traditional single-phase full-bridge dc/dc converter, the presented converter features strong power management ability, high efficiency, and flexible transformer design. With proper control strategy, both of the voltage level before and after the dc transformer can be stabilized with a closed-loop converter located at the receiving end of the transmission system. Finally, a 200MW wind farm is simulated with the proposed dc architecture. The results verify the feasibility of the presented WPCS and system control method.
Published by: Dharavath Krishna, Ramavath Janu
Author: Dharavath Krishna
Paper ID: V3I6-1306
Paper Status: published
Published: November 25, 2017
Phase Coded Radar Signals – Frank Code & P4 Codes
This dissertation presents an overview of phase-coded radar signals based on frank codes and p4 codes used in target detection techniques. For good range detection, high SNR is required. So matched filter is used in the processing of radar signals which maximizes the peak signal power to mean noise ratio. In this analysis, the ambiguity function plays an important role. Using ambiguity diagrams and autocorrelation functions, various waveforms are compared in terms of PSL (peak sidelobe level). Ambiguity diagrams are obtained by using MATLAB code. Primarily simple pulse has been taken but it has some drawbacks like poor range resolution, poor Doppler resolution, so pulse burst waveforms were taken and it has given better Doppler resolution than simple pulse with some range resolution. To improve the range resolution further, LFM (Linear Frequency Modulation) is used. The idea here is to sweep the frequency band B linearly during the pulse duration T. It provides better range Resolution. To reduce the sidelobe levels further Weighting techniques are used for LFM, the presented weighting techniques are Hamming and Hanning. Because of these weighting techniques, PSL is reduced by -14.4 dB but the resultant is range doppler coupling and sidelobes, as it is a drawback, NLFM (non-linear Frequency Modulation) is used which provides lower sidelobes when compared to LFM. In NLFM the method for shaping the spectrum is to deviate from the constant rate of frequency change and to spend more time at frequencies that need to be enhanced. NLFM provides the better sidelobe levels compared to the LFM, and the performance characteristics of the NLFM waveforms for sawtooth frequency coding are studied. NLFM waveforms are sensitive to Doppler frequency shift and are not Doppler tolerant. The major limitations are system complexity, limited development of NLFM generating devices and stringent phase control requirements. With short pulse, short-range target detection is done efficiently but for long range, detection resolution decreases. Hence, the research work proceeded to other waveforms with high duration but the drawback is range resolution. To improve the range resolution, pulse compression technique is used and this can be achieved by frequency coding and phase coding. In this dissertation phase coding is employed for pulse compression of the signals and it is of two types named binary phase codes and polyphase codes. For Barker code of length 7, a sidelobe level of -16.9 dB is obtained, Barker code of length 11, a sidelobe level of -20.82 dB and Barker code of length 13, a sidelobe level of -22.27 dB is obtained. Here the Barker code is limited to 13 and sensitive to Doppler shift. So to reduce the sidelobe level further Frank code has been introduced. Frank code is derived from Barker code and it is a square length sequence. The Frank code is derived from a step approximation to a linear frequency modulation waveform using M frequency steps and M samples per frequency. The Frank code has a length or processing gain of N_c=M^2. For a Frank code of length 16, a sidelobe level of -21.07 dB is obtained but this code is limited up to the maximum length of 139. P4 code belongs to polyphase code. It has no restriction on code elements, and are normally derived from the phase history of frequency modulated pulse generated, which is used for any length of the sequence and it has provided the sidelobe level of -31.4089 dB. It provides a better sidelobe level and Doppler resolution.
Published by: B. Shubhaker
Author: B. Shubhaker
Paper ID: V3I6-1298
Paper Status: published
Published: November 25, 2017
Modeling and Analysis of Transformer
The transformers are an integral part of the power system. In transformers, the main consequence of harmonic currents is an increase in losses, mainly in windings, because of the deformation of the leakage fields. Higher losses mean that more heat is generated in the transformer so that the operating temperature increases, leading to deterioration of the insulation and a potential reduction in lifetime. Due to the non-linear loads, the transformers are much affected by the distorted currents and supply voltages which largely reduce its efficiency due to overheating. Nonlinear loads cause harmonics to flow in the power lines which can overload wiring and Many desktops, personal computers present nonlinear loads to the AC supply because of their power supplies design (capacitor input power supply). In power transformers, the main consequence of harmonic currents is an increase in losses, mainly in windings, because of the deformation of the leakage fields. Higher losses mean that more heat is generated in the transformer so that the operating temperature increases, leading to deterioration of the insulation and a potential reduction in lifetime. As a result, it is necessary to reduce the maximum power load on the transformer, a practice referred to as de-rating, or to take extra care in the design of the transformer to reduce these losses. To estimate the de-rating of the transformer, the load’s K Factor may be used. Thus analyzing this problem and reducing the losses of the transformer has become a major area of research in today’s scenario. This report includes the effects of non-sinusoidal supply voltage on the transformer excitation current and the core losses which includes eddy current and hysteresis losses.
Published by: Divyapradeepa .T
Author: Divyapradeepa .T
Paper ID: V3I6-1288
Paper Status: published
Published: November 25, 2017
Diagnostic Testing : A Technique to Enhance Mathematics Learning
The need of diagnostic testing arises in the subject mathematics specifically at the time when a particular student exhibits some of the other signs and symptoms of his failure or difficulties with regard to the learning of the subject mathematics. Why is one subjected to repeated failure in the subject mathematics? Why is he feeling difficulty in learning a particular concept or skill in one or the other branches and topics of mathematics? Why is he not attending the classes in the subject mathematics? Why does he create fuss or problems in the mathematics class? Why does he hate the teacher of mathematics and his subject? The list may be quite exhaustive with regard to such day to day or occasional problems faced by a teacher of mathematics with his one or more students. It can be easily concluded from the above discussion that diagnostic testing and: remedial teaching are inter-related and complementary to each other. However, the diagnosis not followed by the remedial treatment is useless. Similarly, a remedial task not based on the diagnosis of the nature and extent of the weaknesses may prove not only the wastage of the resources but can also prove dangerous to the well being of the affected persons. It is, therefore, essential that diagnostic testing in mathematics should necessarily be followed by the suitable remedial teaching.
Published by: Dr. Bharathi Y. Khasnis
Author: Dr. Bharathi Y. Khasnis
Paper ID: V3I6-1290
Paper Status: published
Published: November 25, 2017
Financial Modeling of Public Private Partnership in Wastewater Treatment
This article basically determines the assets in which water resources are polluted the environment by anthropogenic sources like agricultural and household formation. As matter of fact Public think that the environmental impact of wastewater pollution has increased day by day many conventional wastewater treatment techniques like chemical adsorption Hence the activated sludge are applied to remove the pollution but there are still some limitations which have high operation costs. The use of wastewater treatment in public and private works as a different medium is receiving increased interest so that its low operation and maintenance costs. As per as the water treatment is concerned it is easy to have a good effectiveness and ability for degrading contaminant. Hence, this paper reviews is the use of wastewater treatment technologies to remove contaminants from wastewater like a high oxidant which represent the main pollutants in wastewater as per as a financial modeling of the public private partnership of wastewater treatment.
Published by: Anas Mehmood, Amit Yadav, Aquib Anwar, Anand Singh, Maaz Allah Khan
Author: Anas Mehmood
Paper ID: V3I6-1278
Paper Status: published
Published: November 24, 2017
