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Dispersion Modeling of Air Pollutants from Gas Flares
, M.Sc. Thesis Sharif University of Technology ; Arhami, Mohammad (Supervisor)
Abstract
In the current study, the dispersion of four major air pollutants, sulphur dioxide, nitrogen oxide, carbon monoxide, and particulate matter from gas flares of an oil field, in Iran, was investigated for year 2011 by application of a conventional steady state Gaussian dispersion model, AERMOD. Two scenarios were applied in modeling, first application of flare parameters based on technologies that exist and the other one using new technologies in flares such as steam assisted with better combustion efficiency. Due to the complexity of meteorological parameters in modeling area, CALPUFF model was used in this study. CALPUFF which is a more advanced model that considers the effect of...
Predicting Research Trends by Using Link Prediction in Keywords Network
, M.Sc. Thesis Sharif University of Technology ; Hajsadeghi, Khosrow (Supervisor) ; Kavousi, Kaveh (Co-Advisor)
Abstract
The rapid development of scientific areas in this modern era makes the process of finding new field of research slow and laborious for prospective scholars. Thus, having a vision of the future could be helpful to pick a right path for doing researches and ensuring that it is worth to invest in. This thesis seeks to predict research trends by using link prediction approaches on keywords network and discusses about the performance of various algorithms in different situations. Moreover, for the last part of the experiments, novel link prediction algorithms are proposed by the author, enhances the accuracy of prediction results. The data set collected from Sciencedirect and Scopus by a strong...
Investigating and Analyzing the Use of Renewable Energies to Reduce Environmental Pollution with an Emphasis on the Automotive Industry
, M.Sc. Thesis Sharif University of Technology ; Mostafavi, Mostafa (Supervisor)
Abstract
Today, different cities in the world have hurried to consumers, natural resources, and producers of waste. Our cities are not excluded from this rule, especially metropolitan like Tehran, which accounted for only 12% of the country's land area, accounting for 15% of the volume of airborne contamination in the country. Considering the importance of the environmental pollution issue and the many researches done in this field, the present study attempts to investigate and analyze the application of renewable energy to reduce environmental pollution with an emphasis on the automotive industry. This is an applied research in terms of purpose. These types of researches are applicable because these...
Study on Immobilization of the Spent Ion Exchange Resins of Tehran Research Reactor in Borosilicate Glass
, M.Sc. Thesis Sharif University of Technology ; Samadfam, Mohammad (Supervisor) ; Yadollahi, Ali (Supervisor) ; Sepehrian, Hamid (Co-Supervisor)
Abstract
Considering the operation of the current nuclear reactors and the country's policy to achieve 10,000 megawatts of nuclear power in the horizon of 1420, as well as the construction of research reactors, we will face a huge amount of radioactive waste in the coming years. Meanwhile, spent ion exchange resins constitute a large amount of low and intermediate level (LILW) solid radioactive waste produced from the nuclear industry. Therefore, appropriate precautionary measures should be taken for the immobilization and disposal of these radioactive wastes in order to ensure the sustainable development of the nuclear industry and the protection of the environment and human health. In this study,...
Model for Planning Flow of Knowledge to Optimize Energy and the Environment
, M.Sc. Thesis Sharif University of Technology ; Saboohi, Yadollah (Supervisor)
Abstract
The purpose of this study is to investigate and analyse the technological transition of a new clean energy technology in the market. The agent-based modeling is used in national innovation chain to describe knowledge spillover between main actors in innovation procedure in order to attain renewable energy technology (RET) from basic research to commercial stage. Government’s expenditure on training human resource and R&D activities is modeled as a tool to analyse the development of innovation chain in order to increase diffusion rate of the new technology. Application of the knowledge flow model is demonstrated through analysis of introduction of solar PV in the energy system of Iran and...
Modeling and Design of CCHP System for Sharif Energy Research Institute
, M.Sc. Thesis Sharif University of Technology ; Sabbohi, Yadollah (Supervisor)
Abstract
The aim of the present research project has been techno-economical analysis of using a CCHP (Combined Cooling Heating and Power) technology at the building of Sharif Energy Research Institute (SERI). The CCHP at SERI is supposed to supply energy required at the building. Useful energy demand at the building include heating in winter, cooling and air conditioning in summer, lighting and power requirement of electric appliance and equipments. Since there are many technologies that could be utilized as CCHP, an optimal model of energy supply system of the building has been developed in order to identify the most appropriate technology. The application of model has enabled techno logical...
Agency and Large-Scale Institutional Changes; The Study of the Creation of the Biopharmaceutical Industry in Iran
, Ph.D. Dissertation Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor) ; Miremadi, Iman (Supervisor) ; Maleki, Ali (Co-Supervisor)
Abstract
Neither state planning nor economic liberalization has been the answer for developing countries to escape from the middle-income trap, mainly due to presence of institutional voids and due to the governance of hindering institutions. Therefore, we need another explanation for how of the development, which must include how institutions change and how new institutions and new institutional fields emerge. Developing countries are full of institutional voids and the governance of hindering institutions. Therefore, the process of economic development in these countries, is beyond the power of market and state, and needs agency. Responding to the recent call by the literature for doing more...
When Renewable Energy R&D and Import will Support Tackling the Climate Change? Regional Analysis for OECD Countries
, M.Sc. Thesis Sharif University of Technology ; Miremadi, Iman (Supervisor) ; Khajehpour, Hossein (Supervisor)
Abstract
One of the actions taken to mitigate the climate change is research, development and demonstration (RD&D) investments in renewable energy technology. In addition to domestic R&D spending, the importation of foreign technologies, as a main channel of technology transfer, is another option to obtain renewable energy technologies in order to achieve climate objectives. In this study, a panel dataset of 28 OECD member countries from 2011 to 2020 is analysed, using the OLS, fixed-effects, and two-system system GMM methods, to assess the impacts of public spending on renewable energy RD&D and the import of renewable energy technologies on the energy-related CO2 emissions. To fully capture the the...
Investigating the Effect of International Collaborations on the Network IndiCentralityces of the Selected Iranian Universities' Faculty Members
,
M.Sc. Thesis
Sharif University of Technology
;
Mirnezami, Reza
(Supervisor)
Abstract
Today, the importance of scientific collaborations is due to the fact that researchers who jointly publish an article, research connections are formed between them, and as a result, professional learning is obtained. Each of these researchers brings a feature and advantage to the research team, such as mastering a particular topic and its subdivisions, team thinking, and division of labor between them. The importance of these collaborations is doubled when researchers collaborate with each other at the international level, because the networking of researchers through collaboration with colleagues from different countries, especially central and developed countries in science, in addition to...
An Investigation of Uncertainty’s Welfare Effects in Economy
, M.Sc. Thesis Sharif University of Technology ; Madanizadeh, Ali (Supervisor)
Abstract
We consider the impact of long-run uncertainty on relative GDP per Capita of an economy and show this effect is negative and significant. We show one standard deviation increase in uncertainty, decreases the economy’s GDP per Capita by 1.3%.In other words uncertainty affects the development of economies in addition to their growth rate. We show the significance of this effect in presence of human capital and physical capital. We consider the impact of uncertainty on relative productivity and show its significant negative impact. We consider the uncertainty impact on GDP per Capita’s time trend and show the effect diminishes over time.Additionally, we investigate the important channels of...
Technological Capabilities as the Base of Diversification Strategy: A Theoretical Framework and its application in TAAM Irankhodro
,
M.Sc. Thesis
Sharif University of Technology
;
Arasti, Mohammad Reza
(Supervisor)
Abstract
Corporations play a significant role in countries economy. These companies are usually active in multi and diverse businesses. Their business diversification could be based on technological capabilities. Therefore it's important to consider the relation between technology strategy (eventually leads to technological capabilities) and the strategy of diversification (as an overall strategy) at acorporate level. Unfortunately, there's no a proper theoretical framework to underpin this relation or offer a method for practical decision-makings. The aim of this research is to fill partially this gap and purpose a new framework for linking technology to business diversification at a corporate...
Developing A Qualitative Model For Evaluation Of Effectiveness Of R&D Projects
, M.Sc. Thesis Sharif University of Technology ; Kermavshah, Ali (Supervisor)
Abstract
Globalization and high rate development in all categories of scientific fields have become a very substantial motive to make effort in R&D affairs all over the world. Therefore, the high volume of investment in this area and Also the importance and urgency of R&D according to economical development statistics and its mutual and close relation with it specially in context of Iran, it is necessary to establish an effective tool to recognize gaps and bugs of subsystems working in the area using high volume investment so as to improve the position of each section of the total body of industry in this regard.
The Use of Social Marketing Approach to Motivate Schools to Teach Students Systematic Thinking
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Alinaghi (Supervisor)
Abstract
One of Iran’s most important priorities at present is the development of the human resources and one of the most important skills of this human resource is decision making and problem solving. During the past few years, there have been numerous criticisms about the educational system in Iran without a substantial solution being offered to replace the existing approach. Aseman Group has been trying to promote system thinking in children. In Aseman, they believe that system thinking is one probable solution in order to develop thinking, decision making and problem solving skills in our human resource at early age. However, one of the many problems facing this group, is the resistance shown by...
Review of Contemporary Islamology Streams as Rational Traditions, Considering Macintyre View Points
, M.Sc. Thesis Sharif University of Technology ; Golshani, Mahdi (Supervisor)
Abstract
Shia theology has gone through different transformations throughout history. In the contemprorary age diverse studies have been carried out in order to discribe it’s preceding changes and future transformations. This tesis tends to show at first that “MacIntyre’s method of historical-philosophical study” is an overally justified model for such studeis, in comparison with the two other models of “Kuhn’s model of scientific revolutions” & “Lakatos’s research programs.” Afterwards, this model has been used for the study of shia theology and a brief narration of the rationality traditions of shia theology through the Iranian tradition has been given. The focus of this section has been on the...
Crowdfunding Platform for Academic Research Projects on the Blockchain Platform
, M.Sc. Thesis Sharif University of Technology ; Habibi, Jafar (Supervisor)
Abstract
The emerging blockchain technology has introduced a new approach in today's industry, creating new opportunities in technical, financial, and economic domains. With the emergence of blockchain-based platforms such as Ethereum and the capability of smart contracts, the possibility of creating decentralized systems has arisen. One of the most popular decentralized systems in the realm of finance is crowdfunding platforms that assist technical and academic projects in need of capital for industrialization. Startups or research-academic projects secure the necessary funding by selling initial offering tokens to both small and large-scale investors. In this research, we aim to present an...
A Semantic Web Model for Computing Trust in Research Social Networks
, M.Sc. Thesis Sharif University of Technology ; Abolhassani, Hassan (Supervisor) ; Habibi, Jafar (Supervisor)
Abstract
Trust as a major part of human interactions, lets us take the risk of decision making in uncertain situations. In computer science trust has lots of applications, and is stated as the highest level in the Semantic Web Cake and one of the seven points of W3C consortium. Trust can be embedded into several different networks and Social networks. Regarding to the fact that rust is transitive and value of trust can be compound and different paths in trust graph has different properties; a trust framework can be formed to embed trust into different networks. This framework should define trust and distrust, certainty and uncertainty, context and trust propagation. Architecture of this general...
Alarming System for Extreme Weather Events (Case Study: Bangladesh)
, M.Sc. Thesis Sharif University of Technology ; Moghim, Sanaz (Supervisor)
Abstract
Climate and extreme hydrometeorological studies are required to reduce risk and vulnerabilities. This study uses different cumulus and microphysics schemes in Weather Research and Forecasting (WRF) model to simulate heavy rainfall events and Cyclone Sidr in Bangladesh, where many extreme events occur. Results show that WRF can capture the cyclone track, intensity, and landfall position. In addition, regionalization and an ensemble method through Bayesian regression model (BRM) are used to improve WRF rainfall simulations. Although regionalization can improve results of the experiments with different schemes, BRM leads to the best performance. To consider uncertainty and evaluate hazards, a...
Projection of Future PM2.5 Concentration in Response of Future Emission Scenarios and Climate Changes in Tehran
, M.Sc. Thesis Sharif University of Technology ; Arhami, Mohammad (Supervisor) ; Safaie, Ammar (Co-Supervisor)
Abstract
The problem of PM pollutants has become one of the main environmental concerns of Tehran city due to the growth of city population and industrialization. As a consequence of this problem there is an increasing trend in the number of unhealthy days in Tehran in terms of air quality in recent years. Solving this problem needs strict regulations to limit the amount of pollutants released from vehicles, industries and power plants. To help this cause, this study investigates the effect of emissions and climate change under RCP scenarios on future PM2.5 concentration in Tehran by using WRF-SMOKE-CMAQ modeling system. The result of simulation of climate conditions under RCP8.5 scenario in 2050...
Impacts of Urban Design on Air Pollution Case Study of Tehran
, Ph.D. Dissertation Sharif University of Technology ; Arhami, Mohammad (Supervisor)
Abstract
This study aims to investigate the effects of urban design and development on Tehran's air quality in calm conditions. Known strategies such as bright roofs and facades, urban development, and modification of the building density are in the focus. The WRF model coupled with Single-Layer Urban Canopy and Building Effects Parametrization canopy schemes were used to predict weather parameters. SMOKE and CMAQ models computed the concentration of pollutants in the city. Urban canopy schemes had correlation coefficients and an index of accordance of about 0.9 and the mean bias was lower than 2. Wind prediction had a lower correlation. The BEP scheme reduced the mean bias for temperature and...
Evalution of Aerosol Optical Depth Modeled by CMAQ
, M.Sc. Thesis Sharif University of Technology ; Arhami, Mhammad (Supervisor)
Abstract
Particuale matters, as a criterion for evaluationg the air quality, have been one of the most important air pollutants through the last decade. Considering the adverse health effects of particulate matters, the importance of monitoring pollutant’s concentration is inevitable. While there are monitoring stations for evaluating the air quality, our knowledge is so limtted since there are few stations working, so there is a spatial and temporal gap. On the other hand, chemical transport models and remote sensing provide us a better chance to track the air quality thoroughly. Since chemical transport models are our only way of filling the gaps, they should be rigorous and accurate. In this study...