A Solution for Improving Scalability in Smart City Based on Fog Computing and SDN

, M.Sc. Thesis Sharif University of Technology Bahmanpour, Zahra (Author) ; Habibi, Jafar (Supervisor)

Abstract

Internet of Things (IoT) is a concept which implies billions of smart objects being connected to the Internet and realizing the smart city. These smart objects generate massive amounts of data and send it to the cloud for process. In reality, sending all the data to the cloud isnn not performant and consumes a lot of energy, therefore fog computing which is a newer concept presented in recent years can be a solution to this problem. By moving the computations to the edge of the network and end devices, fog computing has reduced the cloud approach challenges and is more flexible and scalable. On the other side, software defined networking, with it’s most significant feature which is...

Improving the Biomedical Performance of Metal–Organic Frameworks in Drug Delivery Systems: in Vitro Studies

, M.Sc. Thesis Sharif University of Technology Bahmanpour, Maryam (Author) ; Bagherzadeh, Mojtaba (Supervisor)

Abstract

In this study, water-stable metal-organic frameworks, UiO-66-(CO2H)2, MIL-53-NH2 (Al), ZIF-8 and MIP-202 (Zr), were selected to study the influence of using plant extracts in drug loading process and also its targeted release from these compounds. For this purpose, at first the solution of different plant extracts was used separately as a synthetic solvent in the preparation of the desired MOFs to be present in the structure of these compounds and increase the interaction of the drug with the nanocarrier. Then, a coating of plant extract was applied on the nanocarrier containing the drug after loading the drug to prevent the rapid penetration of the drug from the cavities of MOFs (drug...

The effect of open trench on active foundation isolation using physical modeling

, Article 6th International Conference on Physical Modelling in Geotechnics - Physical Modelling in Geotechnics - 6th ICPMG '06, Hong Kong, 4 August 2006 through 6 August 2006 ; Volume 2 , 2006 , Pages 1217-1222 ; 0415415861 (ISBN); 9780415415866 (ISBN) Jafarzadeh, F ; Ghayoomi, M ; Bahmanpour, A ; Sharif University of Technology

2006

Abstract

Dynamic loads in many projects cause vibration in soil. The propagated energy has a destructive effect on the foundation of the adjacent structures. One of the suitable methods for preventing these harmful waves is active isolation. In this paper the mentioned phenomena is studied by conducting some physical model tests. The loose sandy models are excited by impact type load of a tamper and the response for models with and without trench are measured at different points. Two types of closed form or continuous trenches are used. In closed form trench models, the effect of trench on acceleration attenuation and the ratio of vertical to horizontal accelerations were investigated. In continuous...

Magnetic and light-responsive nanogels based on chitosan functionalized with Au nanoparticles and poly(: N-isopropylacrylamide) as a remotely triggered drug carrier

, Article New Journal of Chemistry ; Volume 44, Issue 40 , 2020 , Pages 17302-17312 Pourjavadi, A ; Doroudian, M ; Bagherifard, M ; Bahmanpour, M ; Sharif University of Technology

Royal Society of Chemistry 2020

Abstract

In the past few years, laser-assisted methods have greatly influenced biomedical studies due to less invasive ways of treatment and higher precision. New stimuli-responsive drug carriers are still explored by scientists to achieve a better spatiotemporal control of drug carriers by using visible to NIR light instead of phototoxic ultra-violet irradiation. Due to their biocompatibility and high loading capacity of hydrophilic drugs, hydrogels have been used extensively in this area. However, poor cellular uptake and restricted loading of hydrophobic drugs are challenges that should be addressed. In this study, a previously known nanogel system based on chitosan and poly(N-isopropylacrylamide)...

3d Design of a Microfluidic Chip for Anticancer Drugs Screening

, M.Sc. Thesis Sharif University of Technology Hashemi, Maryam Sadat (Author) ; Mashayekhan, Shohreh (Supervisor) ; Saadatmand, Maryam (Supervisor)

Abstract

Nowadays, advanced and inexpensive pre-clinical methods for investigating the effects of anti-cancer drugs are expanding. One of the latest three-dimensional laboratory modeling for evaluating the effects of drugs is the use of tumor-on-chip technology, which actually models the physiological system of the body through three-dimensional scaffolds, multicellular cultures, and shaped vascular systems. In this study, three-dimensional culture of cancer cells was performed in the form of spheroids. A chip of U-shaped microstructures with and without gaps was used to trap cells and form cancer spheroids. We simulated the simultaneous effect of drug and oxygen concentration distribution inside the...

Developing an Applied Model for Energy Management in Dairy Production Industry

, M.Sc. Thesis Sharif University of Technology Bahmanpour khalesi, Ahmad Reza (Author) ; Mokhtar, Ali Reza (Supervisor) ; Miremadi, Ali Reza (Supervisor)

Abstract

Reviewing trends of energy consumption in the world reveals that sooner or later energy resources will be depleted. This concerning rate of consumption has brought about more greenhouse gases (GHG) emission influencing deleteriously on environment and climate. Human has continued energy consumption to maintain and improve the quality of his life through industrial production. Industry as a significant energy user owns considerable contribution to this consumption. Several attempts have been carried out to develop energy management systems in order to improve the energy efficiency of industrial sectors. Whilst they are comprehensive and could be applied to any sector, there is lack of...

Model Checking of Stochastic Activity Networks

, M.Sc. Thesis Sharif University of Technology Maryam Bagheri (Author) ; Movaghar, Ali (Supervisor)

Abstract

Modeling and performance evaluation of the real time distributed systems is a significant problem. Stochastic activity network is one of the high level models used for this purpose. This network is an extension of generalized stochastic Petri net which is more powerful and flexible than other Petri net extensions. Checking the satisfiability of properties such as performance, dependability and user's expected properties is considerable in these models. Thus, using the approaches and generating modeling and model checking tools with the mentioned purpose is attractive. A model checker automatically checks the correctness of the system behaviors as properties against the model by getting the...

Robust Estimation and Control of a Planet Lander

, M.Sc. Thesis Sharif University of Technology Ahmadvand, Reza (Author) ; Kiani, Maryam (Supervisor)

Abstract

This study has focused on the important problem of landing on a planet as an important current and future space mission. In this regard, dynamics modeling and integrated state estimation and control problems have been investigated in different views. To this aim, first a novel concurrent representation for translational and rotational kinematics has been developed based on the extension of modified Rodrigues parameters to dual space. This parameter set, called dual modified Rodrigues parameters (DMRP), is then utilized to establish an integrated roto-translational dynamic. The proposed DMRP-based kinematics and dynamics have been verified via comparison to traditional methods of...

Optimal Energy Trading in a Smart Grid Based on Extremum-seeking Algorithm

, M.Sc. Thesis Sharif University of Technology Asgari, Houman (Author) ; Babazadeh, Maryam (Supervisor)

Abstract

Prevalent deployment of Distributed Energy Resources(DERs) in the demand side of electrical energy grids has several advantages such as greenhouse gases emission reduction, mitigation of power losses in the distribution grids and abatement of the dependency on the wholesale generation companies. At the same time, it paves the way for the advent of local interactive energy trading frameworks. In the following thesis, a distributed data-driven algorithm is developed for market-clearing in a community-based local energy market. The social welfare maximization is considered as the objective of the energy trading. The production and demand of electricity are the decision variables of sellers and...

Design of Microfluidic Chip for 3D Cell Culture

, M.Sc. Thesis Sharif University of Technology Ghobadi, Faezeh (Author) ; Saadatmand, Maryam (Supervisor)

Abstract

Understanding biological systems requires extensive knowledge of individual parameters, and to study the processes of cell differentiation and cell behavior, a suitable environment must be created with the physiological conditions of the human body. For this purpose, with the knowledge of microfluidics, a microenvironment can be provided to study the behavior of cells on a small scale. The use of bone tissue model microfluidic chips is an alternative and new method in which it is possible to study the behavior of cells to differentiate into bone and to examine the toxicity of drugs, which in itself can help in the effective and successful treatment of these cases show. Therefore, in this...

Navigation and Control of a Free-Flying Satellite for Cargo Transportation and Placement in Intra-Vehicular Environment

, M.Sc. Thesis Sharif University of Technology Moosavi, Farzan (Author) ; Kiani, Maryam (Supervisor)

Abstract

The main topic of this research is the navigation and control of a free-flying satellite with a robot manipulator while transferring and placing cargo on a space station. After connecting the cargo module, astronauts and robots need to deliver the available loads to the desired modules in a space station. Capturing an object or cargo is a critical issue studied extensively so far. However, delivery and placing of the cargo at the target point have not been investigated yet, to the best of the author’s knowledge; hence, this is a primary motivation for conducting the proposed research. After capturing the payload, the position and attitude of the manipulator with respect to the station’s...

Fabrication the Hydrogel Microfibers Using Bioprinter with Application in Cardiovascular Model

, M.Sc. Thesis Sharif University of Technology Heidari, Faranak (Author) ; Saadatmand, Maryam (Supervisor)

Abstract

Cardiovascular disease (CVD) currently remains a considerable challenge for clinical treatments. CVDs account for N17.5 million deaths per year and will predictably increase to 23.6 million by 2030. The main purpose is to create human model systems to study the effect of disease mutations or drug treatment on the heart. In addition, engineered cardiac tissues are considered promising candidates to be transplanted to improve the function of diseased hearts. For engineered active tissues/organs, 3D bioprinting can fabricate complex tissue architecture with a spatiotemporal distribution of bioactive substances (cells, growth factors, and others) to better guide tissue regeneration. However,...

Utilizing Gaussian Processes to Learn Dynamics of Unknown Torques Acting on a Spacecraft

, M.Sc. Thesis Sharif University of Technology Baradaran, Behdad (Author) ; Kiani, Maryam (Supervisor)

Abstract

Accurate and fast attitude estimation of a rigid body plays an essential role in the performance of a vehicle’s control system, especially aerospace vehicles. Ample works have been done to increase the accuracy and speed of the attitude estimation process, but all have been developed according to a model-based approach. This approach assumes that the torques acting on the body have a known dynamical model that is used for the attitude estimation. The purpose of the present research is to estimate the attitude via a model-free approach, i. e. dynamics of the torques acting on the body are no longer assumed to be known, and its learning is the next step. Thus, the problem formulation of this...

Stabilization and Pole-Placement by Structurally-Constrained Controllers: A Graph-Theoretic Approach

, M.Sc. Thesis Sharif University of Technology Moushaee, Pegah (Author) ; Babazadeh, Maryam (Supervisor)

Abstract

This thesis presents a new approach to design structural output feedback controllers with stabilization and pole-placement at desired points on the S plane. It is assumed that the linear time-invariant system has no fixed mode corresponding to the specified control structure, outside the desired region of the closed-loop poles, such that the structural controller design problem is theoretically feasible. To this end, the structural output controller design problem is first transformed into a structurally equivalent problem based on the solution of a set of discrete linear programs. Then, by using the resultant structure, a new method is proposed for designing static and dynamic control loops...

Fabrication of Thick Scaffold with Microfluidic Channels by Bioprinter

, M.Sc. Thesis Sharif University of Technology Khalighi, Sadaf (Author) ; Saadatmand, Maryam (Supervisor)

Abstract

Cardiovascular diseases are among the leading causes of death worldwide. For instance, in 2015, almost 31% of the world’s mortality rate was due to these causes. One of these diseases is cardiac coronary vessels’ occlusion which leads to the insufficient blood supply to the heart tissue and cardiomyocytes death after Myocardial Infarction (MI). After MI, a hierarchy of events in the heart tissue changes heart muscle and forms cardiac fibrosis. This fibrotic tissue does not have the native one’s properties and function, so it will cause cardiac arrest and patient death. Therefore, it is obvious that vascular network plays a crucial role in the heart function. The importance of cardiac...

Optimal Control of Unknown Interconnected Systems via Distributed Learning

, M.Sc. Thesis Sharif University of Technology Farjadnasab, Milad (Author) ; Babazadeh, Maryam (Supervisor)

Abstract

This thesis addresses the problem of optimal distributed control of unknown interconnected systems. In order to deal with this problem, a data-driven learning framework for finding the optimal centralized and the suboptimal distributed controllers has been developed via convex optimization.First of all, the linear quadratic regulation (LQR) problem is formulated into a nonconvex optimization problem. Using Lagrangian duality theories, a semidefinite program is then developed that requires information about the system dynamics. It is shown that the optimal solution to this problem is independent of the initial conditions and represents the Q-function, an important concept in reinforcement...

Application of Machine Learning Algorithms in Analysis and Prediction of Football Goalkeepers Performance and their Valuation in the Transfer Market

, M.Sc. Thesis Sharif University of Technology Zabihi, Matin (Author) ; Radman, Maryam (Supervisor)

Abstract

Football transformation into an industry with extraordinary financial flow has made this popular sport an attractive field for sports analysts. The development of the computer science and data science has led to the emergence of a concept called football match analysis. The goalkeepers, as a unique member of football teams and regrading their unique features and characteristics, play a crucial role in the outcome of competitions and the success of the teams. Therefore, analysis of various aspects of their performance is one of the essential issues in the application of data science in football. In this research, three separate parts have been studied. In the first part, by using pre-match...

Fixed-Time Consensus Control of Unknown Multi-Agent Systems Based on Distributed Reinforcement Learning

, M.Sc. Thesis Sharif University of Technology Delshad, Aria (Author) ; Babazadeh, Maryam (Supervisor)

Abstract

This thesis introduces a distributed backstepping control strategy based on reinforcement learning to achieve fixed-time consensus in high-order nonlinear multi-agent systems. Each agent, whether a leader or a follower, is modeled using a strict feedback approach, incorporating uncertainties as unknown nonlinear functions and disturbance signals across all state variables. The communication network among agents can be either directed or undirected, with a fixed topology. Each follower employs a control law derived from actor-critic networks, utilizing only the outputs from neighboring agents. The proposed method combines virtual and actual backstepping control laws, formulated from two key...

Employing humanoid robots for teaching english language in Iranian junior high-schools [electronic resource]

, Article International Journal of Humanoid Robotics ; Vol. 11, No. 3 (2014) 1450022 Alemi, M. (Minoo) ; Meghdari, Ali ; Ghazisaedy, Maryam ; Sharif University of Technology

Abstract

This paper presents the effect of robotics assisted language learning (RALL) on the vocabulary learning and retention of Iranian English as foreign language (EFL) junior high school students in Tehran, Iran. After taking a vocabulary pre-test, 46 beginner level female students at the age of 12, studying in their first year of junior-high participated in two groups of RALL (30 students) and non-RALL (16 students) in this study. The textbook used was the English book (Prospect-1) devised by the Iranian Ministry of Education for 7th graders, and the vocabulary taught and tested (pre-test and post-test) were taken from this book. Moreover, the treatment given by a teacher accompanied by a...

Analysis of Structured Controllers Stabilization: A Graph Theoretic Approach

, M.Sc. Thesis Sharif University of Technology Mosalli, Hesamoddin (Author) ; Babazadeh, Maryam (Supervisor)

Abstract

In this thesis, a new method is proposed to find the class of stabilizing control structures for interconnected systems from a graphtheoretic
perspective. The objective is to classify all possible control structures (static or dynamic), capable of stabilizing the closedloop system. The method can be formulated by using the characteristics of fixed modes of the system for arbitrary control structures.To this end, first, a method is proposed based on solving a set of discrete linear programming to determine whether a system is stabilizable via a decentralized controller. Subsequently, by solving a set of discrete linear feasibility problems, all possible stabilizing controller structures...