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    On Possibility of Alternative Technology (Considering Andrew Feinberg’s Theory)

    , M.Sc. Thesis Sharif University of Technology Haqiqat, Mohammad Hossein (Author) ; Hosseini Sarvary, Hasan (Supervisor)
    Abstract
    Considering the undeniable role of technology in modern era, we investigate both the concept of technology as well as its relation as a tool with human beings. Modern technologies have had both positive and negative impact on human individual and social lives. In particular, the labor problems, environmental problems, distortion of the classic human perception of the world, and many other problems provide a very disparate perspective compare with the notion of techno-utopianism. Therefore, many contemporary philosophers such as Andrew Feinberg have made serious criticisms of technology and its consequences. Feinberg states that there is a possibility in reforming the currently derailed role... 

    Considerations on the Empirical Adequacy of Jung’s Theory of Psychoanalysis

    , M.Sc. Thesis Sharif University of Technology Shirazi, Maral (Author) ; Hosseini Sarvary, Hassan (Supervisor)
    Abstract
    Carl Jung's analytical psychology is a psychoanalytic theory that has been established with the assumption of the existence of a collective and inheritable unconscious containing archetypes. The archetypes are psychic patterns that have evolved throughout human history and are inherited by human infants. Repressing these innate and universal properties can cause psychic problems for humans. Those repressed innate properties could emerge indirectly to keep the mental balance, but this may cause problems due to being out of conscious control of the individual. According to Jung's claim, remembering and accepting these repressed identities and then integrating the conscious and unconscious... 

    Emancipation From the Current Technological Atmosphere in Andrew Feenberg and Martin Heidegger's Thought

    , M.Sc. Thesis Sharif University of Technology Boroomand, Khashayar (Author) ; Hosseini, Hasan (Supervisor) ; Abdolkarimi, Bijan (Co-Advisor)
    Abstract
    In this dissertation, Martin Heidegger and Andrew Feenberg's views on the current technological atmosphere and their approaches to escaping from this atmosphere will be considered. Critical Theory of Technology is the title that Feenberg refers to it as his own thoughts upshot regarding technology. This title explicitly indicates Feenberg's background in Frankfurt School Critical Theory. In Critical Theory of Technology the problems of the current technological atmosphere are revealed by concerning values in technical designs. Feenberg not only focuses on undesirable consequences of the current technological development, but also considers emancipation from the current technological... 

    Investigation of the Effects of Variable Valve Timing and Lift on Knock Limits of Spark Ignited Gasoline Engine

    , M.Sc. Thesis Sharif University of Technology Rahatlooi, Rahele (Author) ; Saeidi, Mohammad Hasan (Supervisor) ; Hosseini, Vahid (Supervisor)
    Abstract
    Knock is an abnormal phenomena in combustion engines and one the main limiter elements in increasing engine efficiency. From years ago, recognition and elimination of this phenomenon had studied by investigators and various approaches to anticipation had presented. One of the newest methods is using of property variety in air and fuel mixture with using technologies like Variable Valve Timing (VVT) system.
    The purpose of this work is development a simple model in basis physics of 3 zone, homogeneous, ignition combustion with a partial kinetics model that this model can predict the knock phenomenon onset with good precision for various qualities of mixture. This study survey effect of... 

    Van inwagen, divine guidedness, and the meaning of “chance”1

    , Article Journal of Philosophical Theological Research ; Volume 25, Issue 4 , 2023 , Pages 5-32 ; 17359791 (ISSN) Maqsoudi, M. E ; Hosseini Sarvary , H ; Sharif University of Technology
    University of Qom  2023
    Abstract
    Are the meanings of “chance” and “guidedness” consistent? The goal of this article is to provide an affirmative answer to this question and thereby defend compatibilism (or accommodationism), which is the position that evolutionary theory and interventionist theism can coexist harmoniously. Compatibilists, such as van Inwagen (2003), Bartholomew (2008), Dowe (2011), Bradley (2012), and Sober (2014) argue that certain components or features of the biosphere exhibit both chancy and divinely guided aspects. © The Authors  

    Integrated Pricing and Queuing Problem

    , M.Sc. Thesis Sharif University of Technology Goodini, Kambiz (Author) ; Shavandi, Hasan (Supervisor)
    Abstract
    Joint price and service capacity decisions and integrated pricing and queuing problems with finite or infinite buffers are two remarkable issues of pricing research. In this thesis we consider a joint price and service capacity determination problem in a single server, finite buffer queuing system. Customers arrival and serving occur as Poisson processes. Because of finite buffer capacity, customers finding the system full upon their arrival would be rejected. Customers differ with respect to their reservation prices and time sensitivities. This study focuses on investigating the effect of finite buffer capacity and customers reservation prices and time sensitivities on optimal policy and... 

    Application of Pricing in Flowshop Scheduling

    , M.Sc. Thesis Sharif University of Technology Yarali, Safar (Author) ; Shavandi, Hasan (Supervisor)
    Abstract
    This research considers coordination of pricing and scheduling decisions in a make-to-order environment. We consider a two machine flowshop environment. The objective is to maximize the total net profit, i.e. revenue minus scheduling cost resulting from pricing and scheduling decisions. Prices of orders are set by the manufacturer and demand is a non-increasing function of price. Two mixed integer linear programming models have been developed for the research problem. As the problem is shown to be NP-Hard, a Metaheuristic algorithm is developed which is combination of two tabu search sub algorithms, one for pricing and the other for scheduling. And to evaluate performance, results from... 

    On The Non-Linear Behavior of Continuous Beam to Column Connection

    , M.Sc. Thesis Sharif University of Technology Rahmani, Ahmad (Author) ; Moghadam, Hasan (Supervisor)
    Abstract
    A special steel beam-to-column connection, named Khor-jini, is commonly used for steel framing system in Iran. In this system, two continuous beams are passed next to the columns and are connected to the column side using seated brackets.This type of connection has been common in Iran from the late past. Unfortunately, the seismic behavior of Khorjini frames had not been sufficiently studied prior to Manjil Earthquake of 1990. Due to very large damages which occurred in steel structures especially in connections during the said earthquake, the seismic behavior of this type of connection was studied and some of its weak points were recognized.In this study non-linear... 

    Geometrical Optimization of Traction Infinitely Variable Transmission for Minimizing of Rollers Deformation

    , M.Sc. Thesis Sharif University of Technology Afzali, Abolfazl (Author) ; Zohoor, Hasan (Supervisor)
    Abstract
    With intensified concerns of rising fuel vehicles that reduce fossil fuel globally and also prescript strict rules by standard institutes, vehicle manufacturers try to find a way for reducing the fuel of their products. One these methods use a continuously variable transmission (CVT) instead of manual and automatic gearboxes. Various CVT’s have been proposed in recent year.
    One of the proposed systems is traction infinitely variable transmission (TIVT) that is type of traction drive continuously variable transmission and has been presented in 2007. Research on this system showed that average efficiency is about 96% that is high efficiency. Completed research in 2011 showed that despite... 

    Distribution Problem in Heterogeneous Networks with the Assumption of Flexibility in the Delivery of Goods

    , M.Sc. Thesis Sharif University of Technology Fakhimi, Ramin (Author) ; Shavandi, Hasan (Supervisor)
    Abstract
    In this research, we consider a network of distiribution channels and a central warehouse to deliver the products to distribution centers. We assume the price of products are fixed and the central warehouse is authorized to change the delivery amount for each DC in a reasonable interval. The main idea is authorizing the central warehouse to be flexible in delivery of ordered amounts of DCs in a reasonable interval in order to reduce the transportation cost and then maximizing the profit.
    The problem is formulated as a linear integer programming model and the properties of optimal solution is analyzed. Based on the properties of the model a solution algorithm is developed to solve the... 

    Thermal stresses and kinetics of phase transformation on the run-out table after hot strip rolling of low-carbon steels

    , Article International Journal of Advanced Manufacturing Technology ; Volume 83, Issue 9-12 , 2016 , Pages 1725-1736 ; 02683768 (ISSN) Hasan Nasab, M ; Serajzadeh, S ; Sharif University of Technology
    2016
    Abstract
    A thermo-elastic analysis coupled with a phase change model is employed to evaluate thermal stresses as well as progress of austenite decomposition after hot strip rolling operations. The thermo-mechanical finite element analysis is utilized to assess the distributions of temperature and thermal stresses during cooling while at the same time, a model based on the additivity rule is used to determine the rate of austenite to ferrite decomposition. The proposed model is applicable to multi-pass rolling schedules while the effects of different process parameters including the rolling speed and cooling configuration of the run-out table can be taken into account. In order to verify the... 

    Water and emissions nexus for biodiesel in Iran

    , Article Renewable and Sustainable Energy Reviews ; Volume 93 , 2018 , Pages 354-363 ; 13640321 (ISSN) Haj Hasan, A ; Avami, A ; Sharif University of Technology
    2018
    Abstract
    Biodiesel is an attractive renewable energy in Iran. However, the concerns for food security, emissions, and water requirement move us towards developing the analytical framework to study emission-water nexus of biodiesel via the multi objective sustainable planning of biodiesel supply chain. Here, the literature of biodiesel in Iran is comprehensively reviewed and main issues are discussed. Then, a supply chain planning model is applied to depict the optimal path ways to minimize costs, net emission, and water use in Iran during 25 years. The microalgae via open ponds and jatropha cultivation reduce the total costs and improve negative emissions. The jatropha optimizes the water use and... 

    Comparative assessment of bioethanol supply chain: insights from Iran

    , Article Biofuels ; 2018 ; 17597269 (ISSN) Haj Hasan, A ; Avami, A ; Sharif University of Technology
    Taylor and Francis Ltd  2018
    Abstract
    Biofuels are important alternative fuel in recent years. In this work, the bioethanol supply chain planning is performed by BioEnergy Supply Model to optimally find the best pathways using economic and environmental objective functions in Iran. Then, different sustainability criteria focusing on environmental, economic, and social concerns are assessed for possible routes of the bioethanol production from available resources. Although agriculture residues and wastes, decrease the greenhouse gas emissions but municipal solid wastes are more economic and require less water. The agricultural wastes and residues improve the sustainability. Then, criteria focusing on environmental, economic, and... 

    Comparative assessment of bioethanol supply chain: insights from Iran

    , Article Biofuels ; Volume 12, Issue 4 , 2021 , Pages 475-483 ; 17597269 (ISSN) Haj Hasan, A ; Avami, A ; Sharif University of Technology
    Taylor and Francis Ltd  2021
    Abstract
    Biofuels are important alternative fuel in recent years. In this work, the bioethanol supply chain planning is performed by BioEnergy Supply Model to optimally find the best pathways using economic and environmental objective functions in Iran. Then, different sustainability criteria focusing on environmental, economic, and social concerns are assessed for possible routes of the bioethanol production from available resources. Although agriculture residues and wastes, decrease the greenhouse gas emissions but municipal solid wastes are more economic and require less water. The agricultural wastes and residues improve the sustainability. Then, criteria focusing on environmental, economic, and... 

    Source Enumeration and Identification in Array Processing Systems

    , Ph.D. Dissertation Sharif University of Technology Yazdian, Ehsan (Author) ; Bastani, Mohammad Hasan (Supervisor)
    Abstract
    Employing array of antennas in amny signal processing application has received considerable attention in recent years due to major advances in design and implementation of large dimentional antennas. In many applications we deal with such large dimentional antennas which challenge the traditional signal processing algorithms. Since most of traditional signal processing algorithms assume that the number of samples is much more than the number of array elements while it is not possible to collect so many samples due to hardware and time constraints.
    In this thesis we exploit new results in random matrix theory to charachterize and describe the properties of Sample Covariance Matrices... 

    Design of Three Fingered 5 –DOF Hand for Laparoscopic Surgery

    , M.Sc. Thesis Sharif University of Technology Masoumnia, Adel (Author) ; Zohoor, Hasan (Supervisor)
    Abstract
    Today, many surgical procedures such, gallbladder, gastric bypass, placement of a ring around the stomach, partial removal of colon, removal of tumors use laparoscopic techniques. In this surgery, a variety of tools to capture and remove the internal organs can be used. Sometimes the surgeon selects the proper tools and replacement during surgery, so the surgeon had to do different things with the operation. These tools generally cannot be used because of the large internal organs device is small and does not have enough degrees of freedom. In laparoscopic surgery, the surgeon operate in the abdominal cavity using a thin instrument that is inserted through the trocar hole would do. If... 

    Pricing and Lead Time Decisions in Decentralized Supply Chains Under Competition

    , M.Sc. Thesis Sharif University of Technology Afzalabadi, Maryam (Author) ; Shavandi, Hasan (Supervisor)
    Abstract
    This thesis investigated a two-echelon supply chain consists of one retailer and several manufacturers that faces a price and lead time sensitive demand. We use a Stackelberg game for decision analysis of prices and lead times determined by manufacturers as Leader and retailer as a Follower. We assume that demand depends to the retailer’s price. Market share of each manufacturer, is also price and lead time sensitive. Objective of each firm is to determine price and planned lead time to maximize her own profit. We first determine the best response of the retailer to manufacturers’ decision and next at manufacturers’ level, we will solve the problem for one manufacturer at first and then we... 

    Designi an Adaptive Beamforming Algorithm, Robust Against Direction-of-Arrival Mismatch

    , M.Sc. Thesis Sharif University of Technology Rahmani, Mostafa (Author) ; Bastani, Mohammad Hasan (Supervisor)
    Abstract
    Adaptive beamforming performance is very sensitive to any mismatch between actual and presumed steering vectors of desired signal. In addition to this sensitivity, presence of desired signal in training snapshots dramatically reduces the convergence rate, as compared to the case that signal-free training snapshots are available.
    The present work is aimed at proposing a new adaptive beamformer that is robust against direction-of-arrival (DOA) mismatch and has high convergence rate. This method is based on desired signal elimination from training snapshots and sub-array beamforming technique. To this end, a Blocking matrix that converts primary data to desired signal free data is... 

    Modeling of Water Injection into the Desuperheater of Steam Generator

    , M.Sc. Thesis Sharif University of Technology Setareh, Milad (Author) ; Saidi, Mohammad Hasan (Supervisor)
    Abstract
    One of the most important equipment in a power station is desuperheater which its operation has effect on power station performance and efficiency.It is necessary to identify and evaluate the most important factors that have effect on its performance. Using desuperheater cause that the temperature of exhausting superheat steam of boiler decreases to the desired quantity. If the temperature of superheat steam is very high, it will cause burning of superheater pipes that is very dangerous.Steam is used for two purpose of power generating and operational process. Unfortunately these applications have different requirement. In power generating for maximizing efficiency, turbine needs high... 

    A Novel Model for Three-Dimensional Imaging Using Interferometric ISAR in Curved Target Flight Paths

    , Ph.D. Dissertation Sharif University of Technology Nasirian, Mahdi (Author) ; Bastani, Mohammad Hasan (Supervisor)
    Abstract
    A Synthetic Aperture Radar (SAR) is a system which collects the received signal from a ground target area along linear motion of a flying vehicle carrying it, in order to provide a very high resolution 2D image of it. In Inverse SAR (ISAR), the radar is fixed on the ground and the data collection is performed along the linear motion of the aerial target. Using a second receiver antenna close to the main transceiver antenna of ISAR, it is possible to make a three-dimensional (3D) image of the target, or equivalently find the 3D coordinates of the target scattering points. Such system is called bistatic, monopulse or interferometric ISAR (InISAR). In the conventional model of ISAR, the flying...