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Optimal Model of Industrial Waste Heat Application in Desalination System: A Case Study of Hormozgan Province
, M.Sc. Thesis Sharif University of Technology ; Avami, Akram (Supervisor)
Abstract
Increasing population growth and scarcity of fresh water resources have created the challenge of water supply, especially in the Mena region. Thus, many countries in the region have turned to innovation in the development of high-energy seawater desalination technologies. Utilizing the waste heat of refineries in the desalination industry can reduce costs and preserve the environment. In this article, effective ways to use the waste heat of other flue recovery steam of Bandar Abbas oil refinery are investigated. The integration of the heat recovery system consisting of recuperative heat exchangers and heat pipes with thermal desalination plants is investigated by multi-stage flash and...
Design of A Digitally Controlled Bias Chip For A Transceiver
, M.Sc. Thesis Sharif University of Technology ; Medi, Ali (Supervisor) ; Sheikhaei, Samad (Supervisor)
Abstract
Advances in IC fabrication makes possible have systems on chips. In this thesis we have designed and fabricated a digitally controlled bias chip for a transceiver which can be programmed by its digital interface. In this thesis, briefly we review basics of voltage regulators and methods for controlling them. Then we introduce high voltage 0.18um CMOS technology. In this thesis, we describe the requirements of a specific transceiver and present a system to overcome these requirements. This system has positive, negative and internal regulators, a five-bit analog to digital converter, temperature sensors, power amplifier controller and digital serial interface. In this thesis, we present a...
Technical and Economic Assessment Of a Symbiosis Opportunity for Utilization of Power Plants-Sourced Waste Heat to Supply Greenhouses Demand Considering Spatial Configuration
, M.Sc. Thesis Sharif University of Technology ; Roshandel, Ramin (Supervisor)
Abstract
The main purpose of this research is analyzing the energy stream of clean food production by using Iran's power plants sourced waste heat. In order to achieve this goal, at first, greenhouse heating demand model according to the type of crops and geographic location of greenhouse, heat transport from power plant to greenhouse model, and heat exchanger model is presented. Then, the potential of constructing clean greenhouse around power plants has been evaluated by using the concept of industrial symbiosis and by integrating greenhouse energy demand, waste heat transport, and heat exchanger models into industrial symbiosis concept framework and also by economical and geographical assessments....
CMOS Frequency Multiplier Design for Millimeter-Wave Imaging System
, M.Sc. Thesis Sharif University of Technology ; Fakharzadeh Jahromi, Mohammad (Supervisor)
Abstract
In this study، a novel frequency multiplier chain for wideband millimeter-wave applications at 28 GHz is presented. Millimeter-wave imaging systems require high frequency and wide bandwidth to accurately detect hidden objects. Various methods have been proposed to increase the frequency of generated signals, but in the meantime، frequency multiplier structures exhibit better performance in terms of bandwidth، power consumption and, harmonic rejection. These circuits are widely used in High-frequency telecommunication systems such as 5th generation mobile services. To design a frequency quadrupler، two multiplier stages based on the improved quadrature Gilbert structure were used. Generating...
Valuation of Technology Using Real Option
, M.Sc. Thesis Sharif University of Technology ; Modarres Yazdi, Mohammad (Supervisor)
Abstract
In this study, we introduce a systematic approach for valuation of Technology development projects by applying a discrete model of real options valuation. This framework is then applied to a real technology development project. The estimate of volatility is the most important argument that it is difficult to calculate. Data from the project’s feasibility study is gathered and classified in an appropriate format to be ready for simulation. Then uncertainty parameters are identified. The data is separated and their impacts on annual cash flows are considered. Volatility of the whole project is estimated to be relatively high. This is an advantage for the proposed method. In this project,...
Design and Implementation of Protected Smart High Side and Low Side Switch and Drivers in 0.18um HV BCD CMOS Technology
, M.Sc. Thesis Sharif University of Technology ; Medi, Ali (Supervisor) ; Zolghadri, Mohammad Reza (Supervisor)
Abstract
In this thesis, two types of smart switch & driver chips are designed in 0.18 um HV BCD technology; low side driver and high side driver. These drivers are smart, because of having various types of protection and detection circuits, which protect switch, driver and connected load, versus errors that can be occurred by the user or other environmental effects. The protection circuits are battery over & under voltage shutdown, current limit, inductive load clamper and thermal shutdown. Load status is checked by status detection circuit and reported to user by one bit flag. Battery voltage can vary from 7 V to 40 V and output current is limited to 2 A. Designed high side and low side drivers are...
Development and application of model for planning and development of technology in Oil & Gas Upstream
, M.Sc. Thesis Sharif University of Technology ; Saboohi, Yadollah (Supervisor)
Abstract
Products on Research and Development (R&D) are followed by Technology development. Projects on R&D are cost intensive and considerable of financial resources should be allocated. Optimal allocation of resources could be managed through cost effective strategy. Hence, a “Model for planning and development of technology” has been developed in the present work, which lends itself to the analysis of the industrial application of planning of technological development based on minimizing costs of both development and application of a technology. Mixed Integer Programming optimization model has been developed which enables studying the structure of R&D activities. This model is based on the concept...
Design and Implementation of a 15 dBm CMOS Power Amplifier
, M.Sc. Thesis Sharif University of Technology ; Medi, Ali (Supervisor)
Abstract
Today, phased array antennas have important role in wireless communication systems. Utilizing optimum channel capacity, having better signal to noise ratio and, high data rate are the most important features of these systems. These systems are composed of several thousands of separated transceivers which provide possibility of directional electromagnetic radiation by changing the phase and the amplitude of the signal in each transceiver independently. So, the main components of such a system are amplifiers, phase shifters and, amplitude controllers. Also a high resolution phased array military radar system is another vital applications of these systems at frequency band of 9-10 GHz. The...
Investigating the Factors That Strengthen and Inhibit the Integration of Support and Human Capital Departments in Universities: A Case Study of Sharif University of Technology
, M.Sc. Thesis Sharif University of Technology ; Najmi, Manoochehr (Supervisor) ; Tasavori, Misagh (Supervisor)
Abstract
The purpose of this study is to investigate the factors that strengthen and inhibit the integration of organizational units in the university environment, specifically the integration of the "support" unit and "human resources" unit, which in this study is called "human capital"unit. In the integration literature, the integration of the two units of support and human capital has been less discussed. In particular, it seems that this issue needs more research in the academic environment with its own characteristics.This is an exploration research with the qualitative method and according to a case study of the Sharif University of Technology. To answer the research questions, several...
Theory and Simulation of Nonlinear Transmission Lines Using MOSFET Devices
, M.Sc. Thesis Sharif University of Technology ; Farzaneh, Forouhar (Supervisor)
Abstract
Nonlinear transmission line (NLTL) a guiding structure contains nonlinear elements. For discrete NLTLs, this structure is periodically loaded with nonlinear elements. In the structure of this line nonlinear elements such as ceramic capacitors, nonlinear magnetic elements, vector diodes, Mos transistors, etc can be used. With the rapid development of semiconductor devices and microwave band systems, the demand for implementation of NLTLs has increased. These lines provide wide band-width, cut-off frequencies over the hundreds of GHz and picosecond rise time for various systems.Among the applications of NLTL, the generation of high power RF pulses has attracted the most attention. In this...
Evaluating and Designing an Internet-Service Delivery Approach to Use Virtual Reality in the Pre-Selling Process of Under-Construction Projects in Tehran
, M.Sc. Thesis Sharif University of Technology ; Alvanchi, Amin (Supervisor)
Abstract
Nowadays, the construction industry has undergone extensive changes, with the advent of new technologies, it has departed from the traditional project implementation methods. One of these technologies is Virtual Reality, which is becoming more widespread in various stages of the life cycle of a project from design to delivery. Providing an opportunity for people to see the details of the final construction before completing the project could be regarded as one of the capabilities of this technology. Also, evaluating the project’s features at the time of construction and having a close understanding of product’s reality are the other beneficial aspects of VR. Meanwhile, the emergence and...
Impact of Free Trade on Technological Heterogeneity across Countries: The Case of OECD European Members
, M.Sc. Thesis Sharif University of Technology ; Abedini, Javad (Supervisor)
Abstract
Although technological specialization has been recognized as a stimulating factor of international trade (Ricardian theory), new approaches emphasize the endogeneity of technological heterogeneity across countries. Following them, we proceed to examine the effect of free trade on technological differences among 20 OECD members during 1996-2008. We first use the model of Eaton and Kortum (2002) to obtain an annual estimate of technological heterogeneity within the OECD group. We then analyze the behavior of this index facing international trade statistics in the same period. The results show that the OECD countries have been experienced a technological convergence, thanks to a boost in the...
Evaluation of New Technologies in Iran’s Railway Transportation Industry
, M.Sc. Thesis Sharif University of Technology ; Modarres Yazdi, Mohammad (Supervisor)
Abstract
In this project railway industry is introduced as an optimal alternative for transportation in this country. To select the best choice, four railway technologies that have commercial capacity are presented and the most appropriate one is selected with respect to several criteria, including fuel consumption. The purpose of this thesis is to present the best technology in order to improve Iranian railway transportation by considering the shortage of fossil resources as well as pollution.In this project,the copmparison of alternatives and assessment criteria for best technology selection is done by Analytical Hierarchy Process (AHP) and the questionaries are filled out by industry and...
Provide a Model Providing IT-based Services in the Cloud Manufacturing Requirements with Regard to ITIL
, M.Sc. Thesis Sharif University of Technology ; Fatahi Valilai, Omid (Supervisor)
Abstract
With the advent of the globalization paradigm, the industrial interactions among manufacturing companies have become easier, and the possibility of sharing of the resources among them has been introduced. This issue, coupled with the increasing diversity of customer needs, has led to a change in business models of manufacturing industries and because of that, in the field of globalized manufacturing, a new paradigm called cloud manufacturing has been proposed in which service-orientation is one of the main features. Despite of the extensive studies on cloud manufacturing, the lack of a framework that, based on the service-orientation, determines the improving of manufacturing processes to...
Causal Analysis of Weak Technological Innovative Capabilities of Digital Transformation in Iran’s Upstream Petroleum Industry
, M.Sc. Thesis Sharif University of Technology ; Maleki, Ali (Supervisor) ; Mirnezami, Reza (Supervisor)
Abstract
Digital technologies are shaping various industries in the era of the 4th industrial revolution, and meanwhile, we are witnessing the faster development of these technologies in the post-Corona period. In the oil industry, digital fields have created a window of opportunity to provide a competitive advantage for reputable oil companies. Realizing the importance of this window of opportunity, the leading oil companies quickly seek to use their capacities in the development of digital technologies such as automation, artificial intelligence, robotics, twins. Digital and fast processing methods are in the context of a digital field to take a step towards digital transformation. National Iranian...
Determining Strategic Direction of IT Process Outsourcing in Banking Industry Using Analytical Hierarchy Process (AHP) Technique Case Study: Karafarin Bank
,
M.Sc. Thesis
Sharif University of Technology
;
Isaai, Mohammad Taghi
(Supervisor)
Abstract
Due to the strategic importance of IT, there exists an undeniable need for a systematic analysis before deciding whether or not a particular IT process should be outsourced. A study that provides a systematic analysis for evaluating components of the company's IT for outsourcing may be useful to practitioners. In this research, analytic hierarchy process (AHP) is proposed as a suitable technique for analyzing information systems outsourcing decision. An IT outsourcing case is used to demonstrate the usefulness of the proposed approach. "Super Decisions" is used to implement the AHP
Analyzing Effect of Perceived Risk on Intention to Use of Mobile Bank
, M.Sc. Thesis Sharif University of Technology ; Kiamehr, Mehdi (Supervisor)
Abstract
Mobile Bank is a service that has emerged for about a decadein Iran. while electronic methods and information technologies are used ininternational markets, in Iran using new technologies in the payment and financial industry is limited to the ATMs and Shetab network services. One of the mainreasons for the lack of tendency in using mobile banks and other electronic paymentmethods is these methods’ security concerns. Therefore, in this research, anattempt has been made to provide a model for technology acceptance in order toexamine the main factors of insecurity among users. As a case study, MellatMobile Bank's application has been evaluated in this research and an attempt hasbeen made to...
The Role of Religion in the Human Encounter with Technology
, M.Sc. Thesis Sharif University of Technology ; Taqavi, Mostafa (Supervisor)
Abstract
In this thesis, with the help of a literature review in philosophy of technology including the writings of analytical philosophers, Marcuse, Feenberg & Heidegger & with the help of a definition of Religion provided by Roy Clouser & supplementing it with the additional condition of Non-naturalism, we have tried to develop an all-inclusive theory about the implications of religious beliefs for encountering and coming to a right relation with Technology and its essence in its different layers. For this, after we have obtained in the first chapter, the system of terms and concepts needed for a more precise discussion, from a literature review of the analytical philosophy of technology, in the...
Design and Fabrication of Buck-Boost DC-DC Converter and Linear Regulator With Digitally-Tunable Output Voltage in 0.18µm-HV BCD CMOS Process
, M.Sc. Thesis Sharif University of Technology ; Medi, Ali (Supervisor)
Abstract
In this project, an inverting Buck-Boost converter with two negative linear regulator is designed, implemented and measured in CMOS 0.18μm-HV BCD technology. Input voltage of Buck-Boost converter can vary from +15V to +28 and output voltage is digitally adjustable from -1V to -10V. Maximum output current of the converter is 300mA. A current mode controller and a lag compensator is used to control the converter. A high speed highside current sensor is designed and used in current mode controller. Sampled current of the current sensor is also used in a current limit circuitary to limit the maximum current of highside switch. Two negative linear regulators are placed at the output of the...
Deriving The Main Functions of The Fuel Cell Technology Intelligence System in The National Context
, M.Sc. Thesis Sharif University of Technology ; Malaek, Mohammad Bagher (Supervisor)
Abstract
In developing countries, especially those which are importer of advanced technology in policymakers as well as decision makers face multiple options in the selection, acquisition, application, and development of technology fields. Any appropriate and on-time response to these issues with regard to the dynamics of the market is the one of essential challenges in the technology policymaking which is arrayed in this thesis. The term “Technology Intelligence" is a generic solution for dealing with such a challenge. This research is a part of the development process of the technology intelligence system in the national context which emphasizes the field of “Fuel Cell Technology” as the...