A Navol Strategic Decision Making Framework for Project Machines & Resources Management

, M.Sc. Thesis Sharif University of Technology Khavaninzadeh, Esmaeel (Author) ; Fattahi Valilai, Omid (Supervisor)

Abstract

Organizations adopts different strategies to manage their resources and equipment. This strategies can be categorized through two distinct group. The first group is outsourcing and the second one is in-house management. In some organizations due to the strategic aspects of the equipment, the competitive advantage or restrictive policies, there is a low tendency for outsourcing. Through this approach, the equipment and resources are idle due to partial need on organization. This causes a high amount of investment blockage which faces the organization with high cost of missing investment opportunities. Through the strategic insight, the capitals which have a high potential for making revenue...

Activity coefficients of electrolyte and amino acid in the systems (water + potassium chloride + DL-valine) at T = 298.15 K and (water + sodium chloride + L-valine) at T = 308.15 K

, Article Journal of Chemical Thermodynamics ; Volume 34, Issue 8 , 2002 , Pages 1297-1309 ; 00219614 (ISSN) Khavaninzadeh, A ; Modarress, H ; Taghikhani, V ; Khoshkbarchi, M. K ; Sharif University of Technology

2002

Abstract

The activity coefficient data were reported for (water + potassium chloride + DL-valine) at T = 298.15 K and (water + sodium chloride + L-valine) at T = 308.15 K. The measurements were performed in an electrochemical cell using ion-selective electrodes. The maximum concentrations of the electrolytes and the amino acids studied were 1.0 molality and 0.4 molality, respectively. The results of the activity coefficients of DL-valine are compared with the activity coefficients of DL-valine in (water + sodium chloride + DL-valine) system obtained from the previous study. The results show that the presence of an electrolyte and the nature of its cation have a significant effect on the activity...

Diagnosis of brucellosis disease using data mining: A case study on patients of a hospital in Tehran

, Article Journal of Microbiological Methods ; Volume 199 , 2022 ; 01677012 (ISSN) Sebt, M. V ; Jafari, S ; Khavaninzadeh, M ; Shavandi, A ; Sharif University of Technology

Elsevier B.V 2022

Abstract

Background: Brucellosis is a common zoonotic infection of humans from livestock. This bacterial infection is acquired from infected animals and their products. The pathogen of this disease is a genus of bacilli called Brucella, and no effective vaccine has been discovered yet for the prevention of human brucellosis. Objectives: The present study is mainly conducted to diagnose brucellosis accurately and timely, using Data Mining techniques. Based on the knowledge discovered with Data Mining and opinions of specialist physicians, this study aims to propose instructions for diagnosing brucellosis. Materials and methods: The dataset used in this study contains 340 samples and is extracted from...

Measurement of activity coefficients of amino acids in aqueous electrolyte solutions: Experimental data for the systems (H2O + NaBr + glycine) and (H2O + NaBr + L-valine) at T = 298.15 K

, Article Journal of Chemical Thermodynamics ; Volume 35, Issue 9 , 2003 , Pages 1553-1565 ; 00219614 (ISSN) Khavaninzadeh, A ; Modarress, H ; Taghikhani, V ; Khoshkbarchi, M. K ; Sharif University of Technology

Academic Press 2003

Abstract

Electrochemical cells with two ion-selective electrodes, a cation ion-selective electrode against an anion ion-selective electrode, were used to measure the activity coefficient of amino acids in aqueous electrolyte solutions. Activity coefficient data were measured for (H2O + NaBr + glycine) and (H2O + NaBr + L-valine) at T = 298.15 K. The maximum concentrations of sodium bromide, glycine, and L-valine were (1.0, 2.4, and 0.4) mol · kg-1, respectively. The results show that the presence of an electrolyte and the nature of both the cation and the anion of the electrolyte have significant effects on the activity coefficients of amino acid in aqueous electrolyte solutions

Investigation and Implementation of Ultra High Speed Algorithms for Frequency Measurement

, M.Sc. Thesis Sharif University of Technology Mahmoodi, Mohsen (Author) ; Pezeshk, Amirmansour (Supervisor) ; Sanaei, Esmaeel (Supervisor)

Abstract

The purpose of this project is to detect the instantaneous frequency of an unknown signal which has a frequency range from 2GHz to 18GHz, and its amplitude is limited. In the first step, this signal is amplified, and its amplitude is limited and then it is converted to a digital sequence using a mono-bit scheme and entered the FPGA through an ultra-fast serial port. After that, the algorithm of this project is supposed to do two main processing stages on the received stream of pulses. Detection should be performed in the first phase. It means that it should be determined whether the received pulse sequence is a random sequence made by noise or an almost regular sequence due to a sinusoidal...

High Speed Digital Receiver, Design and Implementation

, M.Sc. Thesis Sharif University of Technology Aarabi, Masoud (Author) ; Sanaei, Esmaeel (Supervisor) ; Pezeshk, Amir Mansoor (Supervisor)

Abstract

Nowadays, increasingly improvements in the digital technology and the advantages of using digital signal processing methods lead engineers to use digital signal processing instead of analog processing in variant domains. However, speed limitations in analog to digital converters (ADCs) and data transfer ports prevent its penetration to high frequency signals region. In this thesis, an Instantaneous Frequency Measurement (IFM) system that can measure frequency in the range of 2-18 GHz is implemented fully digital (DIFM) on FPGA. To do so, monobit sampling technique with the sampling rate of 10 GHz is selected, and GTX high speed serial port is configured to transfer digital data into FPGA....

Study and Implementation of ERP Protocol

, M.Sc. Thesis Sharif University of Technology Hamidi, Hassan (Author) ; Sanaei, Esmaeel (Supervisor) ; Pakravan, Mohammad Reza (Supervisor)

Abstract

One of the major Ethernet challenges for entering the communication networking infrastructure, is the problem of damage prevention caused by the loop formation in the network. Since for offering many of the new services and such required for data it is necessary to provide features such as the ability of protection with short recovery time in service. ITU-T G.8032 Recommendation by providing Ethernet Ring Protection Protocol (ERP) could reduce the recovery time of failure to 50ms, while it takes a few seconds for other protocols. This protocol is one of the optimal solutions to respond these challenges and to complete the benefits of Ethernet as the best technology infrastructure. In this...

Qos Improvement for Building Automation Systems Using WSN

, M.Sc. Thesis Sharif University of Technology Hajimaghsudi, Navid (Author) ; Sanaei, Esmaeel (Supervisor) ; Jahangir, Amir Hossein (Supervisor)

Abstract

Implement of smart grid has three mail reasons: Energy crisis caused by lake of traditional fuels, climate changes that can bring a lot of difficulties for human and great potentials of renewable energies. There are many diverse concepts in smart grid. Increase power quality, decrease power cuts, increase active consumer participations, effective way r of using distribution generation units are most important advantages of smart grid.I I;.Emerging new technologies are forced smart grid operators using this new technologies. Wireless Sensor Networks are one of these new technologies that can be used in smart gird. In this thesis we are going to study the rule of wireless sensor networks in...

Efficient Implementation of Direction Finding of Radar Targets Using Artificial Intelligance Techniqes

, M.Sc. Thesis Sharif University of Technology Zare Hematabadi, Ali Akbar (Author) ; Sanaei, Esmaeel (Supervisor) ; Pezeshk, Amir Mansour (Supervisor)

Abstract

There are many methods for direction finding (DF) of radar targets, while the complexity and time elapsed calculation are their main drawbacks, thus the real time implementation of this methods are difficult. Artificial neural network (ANN) for DF is one of the optimum and good ways to implementation that have better result versus other techniques. In this thesis, direction finding problem for radar targets by using artificial neural networks have been studied. A new method is presented to detect the multiple targets simultaneously, that it can be implemented in digital form easily. Here one-dimensional DF by using uniform linear array (ULA) discussed and formulated, then the proposed...