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Numerical Study The Dielectric Properties And Specific Absorption Rate Of Nerve Human Tissue At Different Frequencies
Get PDFThe study of electromagnetic radiation effects on human body is a very important subject, due to the possible health effects, these electromagnetic waves can cause in life tissue. In this paper, the dielectric properties and specific absorption rat (SAR) distribution in nerve human tissues exposed to electromagnetic radiation with different frequencies is studied . We modeled nerve tissue by layered system. Finite difference time domain (FDTD) computations were used to evaluator the electric, magnetic field, and specific absorption rate. Results show the dielectric properties as conductivity, relative permittivity and penetration depth of nerve tissue plotted with different frequencies. A one dimensional FDTD algorithm has been built, some simulations for electromagnetic wave through the nerve tissue is made. Results show that electromagnetic fields penetrate the life tissues and attenuate fast to reach zero at large time steps. SAR show maximum at the first boundary of tissue and becomes less value by using high frequency. Also, the result appear that penetration depth and relative permittivity decreased by increasing frequency
Reduced Order Modeling of Linearized Power Electronic Cricuit
Get PDFMost of the systems in our daily life consist of power electronic circuits. They are micro circuits which are difficult to be analyze because the circuit consists of nonlinear elements. This paper deals with one of the power electronic circuit, boost converter. The non-linear elements of the converter circuit are linearized. The obtained linearized converter circuit is a higher order model. Designing a controller for this higher order model is complex and simulation time also increases. So, efficient order reduction techniques have been used to reduce the system order. The models are simulated using MATLAB 13.0 simulink software. Simulation results show that hankel was a better method for order reduction depicting same characteristics for higher and lower order models.
Commercial Bank Financing and Agricultural Sector Output in Nigeria (1981-2014)
Get PDFThis research work examined the Effect of Commercial Banks Financing and Agricultural sector output in Nigeria for a period of 34 years (1981-2014). Its focus is to describe the trend of Real Agricultural Domestic Product (RAGDP) and Commercial Bank Loans to Agricultural Sector (CBLA); determine the effect of commercial banks financing and agricultural sector output in Nigeria as well as make policy recommendations based on research findings.Secondary data were sourced from Central Bank Statistical Bulletin of various years. The Ordinary Lease square technique was used in this research to estimate the effect of commercial banks financing on agricultural sector output. Augmented Dickey Fuller (ADF) test was conducted to determine the properties of the variables used in the study and also to test for stationarity of the variables. The independent variable is commercial bank loan to agriculture and the dependent variable is real agricultural gross domestic product.The results of the unit root test shows that the variables were stationary at first difference.The results of descript statistics show slight fluctuating trend in both RAGDP and CBLA. The regression results revealed that R2 is 0.996415 or 99.6%. This implies that about 99.6 percent of the total variations in real agricultural gross domestic product is explained by the explanatory variable (commercial bank loans to agricultural sector). Thus, findings revealed that there is a positive relationship between commercial bank loan to agriculture and the real agricultural gross domestic product and this is in line with the aprori expectation of the study.This means that a one percent increase in commercial bank loan to agricultural sector will increase real agricultural gross domestic product by 1.9 percent. The F-ratio of the model showed that model is statistically significant. Thus, we conclude that the commercial bank financing has significant impact on agricultural sector output in Nigeria. The study recommends that the commercial bank should increase loan facilities to the agricultural sector to sustain food production for the teeming population of Nigeria.
The Importance of Self Economic Management in School
Get PDFThe current study addressed self-management in schools and how it is applied through discussing the concept of school management, school management styles which consists of three sections, namely the Central Administration and the decentralized management, a style combining centralized and decentralized administrations, and the concept of self-management in schools, and also addressed the importance of self-management for the school since it contributes to involving parents and important people. The benefits of self-management of the school stems from the system of self-management in schools that seeks in particular to achieve educational reform within the State
Marketing Affects of Noodles by Radio Advertisement on the Consumption of Noodles (Rumpum) in Nepal
Get PDFThis paper is projected brunt of advertising burning up of noodles in Nepal. Advertising is a part of everyday life for everyone, hence it is difficult to escape them even if we never go through the television program or listen to the FM[Frequency Modulation] radios or read newspaper or magazines. We would still by bombared with the advertisements through billboards at the highways shopping complex,BusPark, crossway posters in the shops and offices and pamphlets in the wall. More than that advertising is in the form of the leaflets too. The sponsor is notorious by his company’s name or brand name or both. By an aid, the sponsor is not identified and it is not paid for its use of media in which it has appeared then the significance point is considered to be publicity by qualitative and quantatively study too
Technical Analysis: Exploring MACD in the Lebanese Stock Market
Get PDFThe stock markets have shown a great growth in the financial world that required traders to deal with many quantitative methods to analyze markets in order to predict commodities’ future prices. This study assesses the effect of technical analysis on the Lebanese stock markets by using a tool known as the Moving Average Convergence/Divergence (MACD) oscillator that explores how MACD can be utilized to optimize profits in the Lebanese stock exchange, during the trading process. The study is performed on closing prices of shares of six Lebanese banks and a real estate company, over a time period extending from the beginning of the year 2004 till the end of the year 2014. Results are meant to indicate whether MACD is able to optimize profits and forecast the Lebanese stock prices. It is concluded that the application of MACD in the decision making process for investing in the Lebanese stock market does not significantly contribute to the maximization of profitability on investments
Reflecting Upon Ethical Imperatives for Scholarly Research and The Case of a South African University
Get PDFA university’s reputation is built on the quality of its research and teaching output. Often a university with an established track record on research and teaching output can more easily access external funding and further improve on its ranking and standing amongst peers. This enables it to attract and retain better quality students, academics and researchers. Ideally, these staff and students in turn increase the quality of its research and thus a virtuous circle is created. Therefore, it is understandable that universities in South Africa, as in most parts of the world, are constantly scrambling to increase their research output and enhance their research quality. However, whenever issues of compromised academic integrity and unethical research practices arise, university management has often been unable to deal adequately with these issues. This article concurs with the emerging argument among research scholars that it is insufficient to focus on ethical policies and guidelines without considering the culture of the institution. It argues that the ethical researcher needs to be supported by a dominant culture of academic integrity. The article then uses the case of South African university to illustrate this argument.
Vector Space Ideas Computing A^m
Get PDFWe discuss an algorithm with a simplistic approach to solving systems of linear equations arising from the application of real-valued vector space ideas to the computation of the large powers of square matrices
Quasi 2-metrics, 2-metrics and their decomposition
Get PDFIn this paper, we define the quasi semi 2-metric and quasi 2-metric functions, and after that we give some ways to decompose a 2-metric in two conjugated quasi 2-metrics
A Comparison Study of Linear and Nonlinear Regression Models
Get PDFRegression analysis is an important statistical tool for analyzing the relationships between dependent, and independent variables. The main goal of regression analysis is determine, and estimate parameters of a function that describe the best fit for a given data sets. There are many linear types of regression analysis models such as simple and multiple regression models. Also, there are the non-linear regression analyses such as binary and multinomial logistic regression models. This research at first, introduced many types of such models. Second, estimates the parameters of the models by using the maximum likelihood estimation, and the least square estimation methods. Also, it introduces some criteria for evaluating methods. Two suitable applications on two different data sets are conducted, and useful results are concluded