Power system studies usually account for the most part of the investigations performed in master’s dissertation on electrical engineering. It is said in the dissertation that changes in the utilization conditions of the power systems usually leads to low-frequency variations. In the master’s dissertation on electrical engineering, these variations is said to be sometimes damping by itself, but sometimes they expand and result in exiting from the circuit in a part of the system. Based on the master’s dissertation on electrical engineering, small signal is at the main point of the focus, in terms of stability of the power systems. In the master’s dissertation on electrical engineering, using the fuzzy T-S method, a non-linear fuzzy stabilizer is designed for stabilizing low-frequency variations in the power system. In this dissertation, the Fuzzy T-S method is used to transform non-linear equations of the system to a series of linear sub-systems. Also, it is said in the dissertation that for any of the linear sub-systems, a controller is designed by using the parallel distributed compensator method. Finally, as for the sum of internal linear controllers, non-linear controller would be obtained. In the master’s dissertation on electrical engineering, conditions of the Liapanov’s method of stability are used as matrix inequalities. MATLAB software is used for the simulation in the dissertation. The proposed stabilizer is tested on both the single-machine and multiple-machine system and it is then compared with the designed conventional methods

We read in the PhD dissertation on the economy that financial part has always been the main focus of the subjects under study. The main reason for paying much attention to this subject is the central role of the financial part to the economic development and growth. An importance of the development of financial markets for economic growth is regarded in the PhD dissertation on the economy, which is a key subject of the development economy. With regard to the importance of these subjects, the study of the relationship between financial development and economic growth in the PhD dissertation seems to be essential and necessary. In this dissertation, we shed light to the effect of financial development, commercial ratio, domestic investment and the interest rate on the economic growth. The main goal of this dissertation is to answer the question regarding the effectiveness of the financial development on the economic growth. After studying this objective and answering this question in the results of the Ph.D. dissertation, other variables including investment, interest rate, and the commercial index would be addressed. A certain period of time is selected in the dissertation to study the relationship between the variables. Also, in this dissertation, Auto Regressive Distributed Lags method (ARDL) is normally used in order to study the results. Results of the current dissertation indicate a positive significant relation between interest rate and domestic investment with economic growth. Short-term demonstration of the positive and significant relationship between financial development index and economic growth is also discussed in the PhD dissertation on the economy.

Knowledge management is a highly interesting subject in PhD dissertation in the field of public management. It is stated in the PhD dissertation that knowledge management is regarded an important issue, not only by the academic world but also in the view of the legislator public organizations, commercial businesses, investors, and stakeholders. While most of the researches carried out in the PhD dissertation field regarding intellectual investment and knowledge management have been performed in the private sector, recent studies presented in this dissertation have also engaged public organizations, including universities and research centers much engaged for research in this field

Probably, one of the factors that led to attracting many of the public management researchers of the PhD dissertation toward knowledge management is that the main objective of the universities is to make and spread knowledge and that their main investments are carried out in the field of research and human resources. We discuss in this Ph.D. dissertation that despite intangibility of the input and output of the universities, there are limited tools for them to being measured and managed well. An important issue stated in the PhD dissertation is that people’s understanding of knowledge management usually happens intellectually and using linguistic words. The main objective of the PhD dissertation is to present a fuzzy model and approach for knowledge management in the academic institutes. Also, author of the dissertation attempts to analyze the observed gap between expectations and understandings of the employees of the different institutes (who are considered as a society) and also to propose his own developed model

In the master’s dissertation on petroleum engineering, we argue that the daily needs of the mankind to hydrocarbon resources are increasing constantly on a day to day basis. It is said in the dissertation that In order to supply the required energy and also reducing producible reserves, use of the enhanced recovery methods with the purpose of increasing the producible resources is inevitable. Based on the master’s dissertation on petroleum engineering, research regarding enhanced recovery methods, type and method of injecting the suitable fluid with the aim of increasing productivity of the oil reserves are of significant importance. One of the novel methods of enhanced recovery that is discussed in the dissertation is injection of low-salinity water that is performed for optimization and controlling ions concentration and also determination of the optimum level of the injected water’s salinity in order to enhance the recovery level of oil. It is said in the dissertation that advantages of using dilute water compared to the salty water as a enhanced recovery fluid include: ability to achieve higher recovery level, lower ratio of the water cutting, usability in carbonate resources, determination of wettability of the carbonate rock to hydrophilic and also reducing saturation level of the residual oil

In this dissertation, normally, different states of injecting dilute and salty water are simulated and compared. Simulation is performed using ECLIPSE 100 simulator. Another issue examined in the dissertation is effect of the injected water salinity. Based on the simulation results of the dissertation, it is shown that dilute water injection results in higher recovery level than using salty water and among studied parameters, water salinity level is the most significant