Version - 1 (May 2018)


Effects of Lime on Visakhapatnam Port Soil
S. Eswara Rao, Natireddi Venkata Teja, Kovagapu Satish Babu
Abstract       pdf Full text PDF
Index: 10.183x/A0705010107 aned
Stabilization of soil is a process by which the soil properties can be modified. Soft soils, when contact with water loses their strength because of its high swelling potential which may lead to differential settlements and this type of soil is be found In Visakhapatnam port area. As water is the main con and it cannot be eliminated but its content can be reduced by various methods, soil was treated with lime to observe its behavior apart from reducing the content of the water using the codal provisions. For this, it was assumed that 3, 6, 9, 12 & 15 percentages of lime by weight of the soil might yield better results by improving the engineering properties of the soil. The results showed that with an increase in the content of the lime, moisture content present in the soil was reduced. In this process, it was observed that the values of Unconfined Compressive Strength, California Bearing Ratio was improving on a fairly basis up to a point and there was no improvement further in the case of UCS. It was concluded that using lime was helpful in improving the soil properties.
Author Keywords:- stabilization, lime, port soil, UCS,CBR.
e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 07
© Copyright 2014, All rights reserved.

Statistical Process Control Methods for Detecting Outliers in Gps Time Series Data
Ha Trung Hieu, Tien Yin Chou, Yao Min Fang, Thanh Van Hoang
Abstract       pdf Full text PDF
Index: 10.183x/B0705010815 aned
During system operation, for some reasons GPS time series data include some values that deviate from the rest of the dataset which is called outliers. To improve the quality of data in used for data analysis, it is very important to detect these outliers. Statistical Process Control methods are studied in this paper to solve this issue. The result shows that Shewhart control chart with the usage in pairs of chart can present both data trend and the dispersion of data. This control chart is suitable and highly feasible for detecting outliers in GPS time series data. In which, the mean – standard deviation ( x  s ) chart is more effective to detect small value outliers in dataset, whereas individual – moving range (I-MR) chart and mean – range ( x  R ) are suitable for detecting outliers with larger values. The result also shown that the EWMA control chart with chosen parameters is not suitable in GPS time series outliers detection.
Author Keywords:- Statistical process control, detect outlier, Shewhart control chart, GPS time series data
e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 08
© Copyright 2014, All rights reserved.

Evolution of Stock Markets and Role of Stock Exchange
P. Sivasankari
Abstract       pdf Full text PDF
Index: 10.183x/C0705011617 aned
This present study related to the evolution of Stock markets worldwide and in Indian perspective, the major stock exchange in Abroad and in India , and role of stock exchanges.
Author Keywords:- Stock exchange, Stock market, Newyork Stock exchange, National Stock exchange, Bombay stock exchange.
e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 02
© Copyright 2014, All rights reserved.

A Novel Dc Voltage Detection Technique in Cascaded H-Bridge Multilevel Converter Based Photovoltaic System
Harsha Patle, Pranita Chavan
Abstract       pdf Full text PDF
Index: 10.183x/D0705011829 aned
In this paper a cascaded H-Bridge multilevel converter based Photovoltaic (PV) system with no voltage or current sensors at the dc-side is proposed. Removing the dc-side sensors simplifies the hardware, resulting in lower cost and higher reliability of the PV system. A novel dc voltage detection technique is established by estimating the capacitors' voltages from the output ac voltage of the inverter using single voltage sensor at the ac side of the converter. The scheme allows replacing all dc-side voltage sensors by a single voltage sensor at the ac-side of the converter. Furthermore, the dc current sensors, conventionally required for the maximum power tracking (MPPT), are also removed. Instead, the outputs from the capacitors' voltage control systems are utilized for the MPPT. The effectiveness of the proposed system with no voltage and current at dc side of the converter is demonstrated on a 2 kW single-phase 7-level CHB converter based PV system.The results are obtained from the MATLAB/ SIMULINK environment.
Author Keywords:- Voltage Measurement, Voltage Control, Capacitors, Sensor System, Switches.
e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 12
© Copyright 2014, All rights reserved.