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Satellite and ground-based assessment of middle east meteorological parameters impact on dust activities in western iran
, Article Scientia Iranica ; Volume 23, Issue 6 , 2016 , Pages 2478-2493 ; 10263098 (ISSN) ; Sotoudeheian, S ; Tajrishy, M ; Sharif University of Technology
Sharif University of Technology
2016
Abstract
In this article, the relation between meteorological parameters and dust activities in western Iran has been studied. Satellite-based data achieved from TOMS are used to investigate the dust activities within a time period of 30 years. In the first part of this study, we examine the statistical trend of Aerosol Index (AI) and local meteorological parameters in 15 different stations. The same patterns of AI variations in all stations indicate that this region has always been subjected to dust storms which originate from similar sources in the neighboring countries that could be known as a sole dust transfer system. In the second part, we investigate the spatial correlation between the...
Investigation of Dust-Causing Factors in Western Iran and Its Effects on Climate Changes
, M.Sc. Thesis Sharif University of Technology ; Agha Mohammad Hossein Tajrishi, Massoud (Supervisor)
Abstract
study has been divided into two main sections. In the first section, six climate variables have been analyzed in 15 synoptic stations in Iran’s west region through parametric and non-parametric statistical tests in order to find the climate varibility. The results illustared that, in general, there is no climate variability in the western part of Iran. Investigation of climatic indices and changes in the meteorological data in the entire study area (including a large portion of Middle East), in a 30 year period (1979-2008), is eloquent of a drought during the last 10 years of the period. In the second section, by means of the Aerosoal Index (AI) extracted from TOMS and OMI tools, it was...
What drives mergers and acquisitions waves in developing countries? Evidences from Iranian banking industry
, Article Iranian Economic Review ; Volume 19, Issue 2 , 2015 , Pages 123-137 ; 10266542 (ISSN) ; Alambeigi, A ; Karimi, P ; Zarei, B ; Sharif University of Technology
Abstract
Many Middle-East countries, like Iran, have dynamic banking industries and have observed merger and acquisitions (M&A) waves. M&A waves are usually defined in the developed world context and some of their main drivers were identified as: market timing, environment's shocks, merger manias, government regulation and regulatory, and technological changes. It has been discussed that merger waves and their reasons are among the ten most important unsolved mysteries in the field of finance (Brealey and Myers, 1991, p. 923), and as a result of this, it was not possible to completely clarify the reasons behind emerging M&A waves, especially in developing countries; for this reason in these...
Development and Application of a Model for Assessment of Energy Sector in Middle East and the Role of Iran
, M.Sc. Thesis Sharif University of Technology ; Saboohi, Yadollah (Supervisor)
Abstract
The Middle-East with its enormous fossil fuel resources is considered as one of the most important regions with regard to the future world energy outlook. The region produced more than 32% and 16% of the world oil and gas, respectively, in 2012 and contains more than 48% of proven oil and 43% of proven gas reserves in the world and with 78 years of reserves-to-production ratio (RPR or R/P) has a key role in global energy provision. However, the energy issues in the region are intensifying. For instance, the fossil resources are pushed to the second half of their life time due to massive exploitation which results in change in production processes and raises the need for energy investment, on...
Newly desertified regions in Iraq and its surrounding areas: Significant novel sources of global dust particles
, Article Journal of Arid Environments ; Volume 116 , May , 2015 , Pages 1-10 ; 01401963 (ISSN) ; Karimi, N ; Ariya, P. A ; Sharif University of Technology
Academic Press
2015
Abstract
Using the newly developed Middle East Dust Index (MEDI) applied to MODIS satellite data, we consider a relationship between the recent desertified regions, over the past three decades, and the dust source points identified during the period of 2001-2012. Results indicate that major source points are located in Iraq and Syria, and by implementing the spectral mixture analysis on the Landsat TM images (1984 and 2012), a novel desertification map was extracted. Results of this study indicate for the first time that c.a., 39% of all detected source points are located in this newly anthropogenically desertified area. Using extracted indices for Deep Blue algorithm, dust sources were classified...
International Portfolio Diversification in the Middle East Region
, M.Sc. Thesis Sharif University of Technology ; Zamani, Shiva (Supervisor) ; Vaziri, Mohammad Taghi (Supervisor)
Abstract
This research focuses on the topic of international portfolio diversification and its core attention is entitled to Middle East stock exchanges, as emergent markets. These markets are not analyzed yet as investment destinations for developed countries investors. Although all methodologies in this research are applied on ME markets data, but can be augmented and generalized for other markets. In this quest, we tried to investigate portfolio diversification opportunity for European (generally Frankfurt & Paris stock exchanges) or American investors with ME stock exchanges including Tehran, Istanbul, Saudi Arabia Tadawul, Abu Dhabi & Cairo stock exchanges, in order to reduce risk and increase...
Local model of a scientific collaboration in physics network compared with the global model
, Article Physica A: Statistical Mechanics and its Applications ; Volume 389, Issue 23 , 2010 , Pages 5530-5537 ; 03784371 (ISSN) ; Shirazi, A. H ; Kargaran, A ; Jafari, G. R ; Sharif University of Technology
2010
Abstract
We have constructed a collaboration network for physicists based in Iran working in different disciplines. By discussing properties like collaborators per author, shortest path, betweenness, and the concept of power in networks for this local model, and comparing with the global model, we understand how a developing country in the Middle East is contributing to the scientific growth in the world statistically. In this comparison, we found some properties of the local model which were not in accordance with the standard global society of science, which should be considered in developing the future policies. Our results show significant differences in factors like the degree and the diameter...
The emergence of Iran in the world car industry: An estimation of its export potential
, Article World Economy ; Volume 32, Issue 5 , 2009 , Pages 790-818 ; 03785920 (ISSN) ; Péridy, N ; Sharif University of Technology
2009
Abstract
In the past 10 years Iran has been emerging as a major car producer in the world. However, due to delays in economic reforms, Iranian car exports have not increased as much as production. This paper presents a first estimation of the Iranian export potential in the car industry. Based on new theoretical developments of the gravity equation, an empirical bilateral trade model is proposed. It includes sectoral variables (car production, import tariffs), as well as other original variables, such as expectations and hysteresis. We then develop a dataset which includes the 40 major car-exporting countries in the world, 34 importing countries, a 10-year time period as well as four car production...
Treatment of oil-contaminated drill cuttings of South Pars gas field in Iran using supercritical carbon dioxide
, Article Iranian Journal of Science and Technology, Transaction B: Engineering ; Volume 30, Issue 5 , 2006 , Pages 607-611 ; 03601307 (ISSN) ; Esmaeilzadeh, F ; Sharif University of Technology
2006
Abstract
New treatment technologies are currently being investigated for the treatment of contaminated drilling waste mud with oil. Supercritical fluid extraction is a promising technology that could be effectively used to extract this contaminated drilling waste mud. In this work, one step extraction efficiency of supercritical carbon dioxide to drilling waste mud of South Pars gas field has been investigated at a range of temperatures (55 to 79.5 °C), and over a pressure range of 160 to 220 bar. Extraction efficiencies were calculated based on cuttings weight loss. Results show that approximately 28.45% of cuttings weight loss in one step extraction at a pressure of 200 bar and temperature of 60 °C...
Minimization of adverse environmental effects of a sports complex through implementation of green management
, Article 4th International Conference on Urban Regeneration and Sustainability, SUSTAINABLE CITY 2006, SC06, Tallin, 17 July 2006 through 19 July 2006 ; Volume 93 , 2006 , Pages 457-465 ; 17433541 (ISSN); 1845640403 (ISBN); 9781845640408 (ISBN) ; Karbasi, A. R ; Khadivi, S ; Sharif University of Technology
WITPress
2006
Abstract
Implementation of green management in sports complexes can ensure the continuous arrangement and assessment of activities from an environmental perspective and will end up with the control and prevention of contaminants. Enghelab Sports Complex in Iran was selected for this study due to its size and long-term activities. The establishment of Enghelab Sports Complex is among important national projects whose framework was founded in the late 1950s. Due to the comprehensive plan of the aforesaid sports complex, numerous centers and departments were established in this site in order to materialize its envisioned sports, recreational and cultural objectives. Green management pursues greater...
Simulation of energy saving in Iranian buildings using integrative modelling for insulation
, Article Renewable Energy ; Volume 31, Issue 4 , 2006 , Pages 417-425 ; 09601481 (ISSN) ; Sattari, S ; Sharif University of Technology
2006
Abstract
According to one survey on energy consumption in Iran, commercial and building sector consume more energy than any other economic sectors. For example, about 38% of total energy that consumed in year 2001 has been used for space heating. Insulation in external walls of buildings has an important role to reduce the environmental effects on indoor space condition. Therefore, always using insulation is an alternative to avoid from the energy loss. In this paper, the effects of the using of a proper insulation on the energy saving in Iranian buildings are studied. For this purpose, an integrative modelling is used for simulation of the energy consumption in buildings. It is shown that energy...
Implementation of Lean Management Principles in the Banking System a Case Study: Middle East Bank
, M.Sc. Thesis Sharif University of Technology ; Houshmand, Mahmoud (Supervisor)
Abstract
Lean Management is a set of modern procedures that uplifted Japanese manufacturers' status in global markets. The core principle of lean management is to eliminate every process or operation which creates no value, directly and indirectly. To this day, lean has been more focused on production. But eliminating the wastes in service organizations in crucial, due to nature of service. In this thesis, first the lean concept and the Middle East bank is discussed and a literature review on lean studies is presented. Then a vision for the future is envisioned and a questionnaire for conducting a Corporate Diagnosis is developed. In the next step, a lean management system for the bank is implemented...
Integrated seismic attributes to characterize a widely distributed carbonate clastic deposit system in khuzestan province, SW Iran
, Article Journal of Geophysics and Engineering ; Volume 6, Issue 2 , 2009 , Pages 162-171 ; 17422132 (ISSN) ; Nabi Bidhendi, M ; Javaherian, A ; Pishvaie, M. R ; Sharif University of Technology
2009
Abstract
Integrated seismic attributes, coherency, acoustic impedance (AI), lambda-rho (λρ) and mu-rho (μρ), were used to delineate and to characterize a complex regional channel deposition system in a carbonate reservoir interval in the upper part of the Sarvak Formation. The study area incorporates three adjacent oil fields in SW Iran (Khuzestan Province) covered by three individual 3D seismic surveys having a total area of about 2800 km 2. We generated a regional horizon-based coherency cube using these three seismic surveys. This revealed a carbonate clastic deposition channelling system over the entire study area. We characterized this channel deposition system in agreement with regional...
Experimental investigation of new designs of wind towers
, Article Renewable Energy ; Volume 33, Issue 10 , 2008 , Pages 2273-2281 ; 09601481 (ISSN) ; Mazidi, M ; Dehghani, A. R ; Sharif University of Technology
2008
Abstract
Two new designs of wind towers were tested side by side with a conventional wind tower in the city of Yazd, Iran. All the towers were of identical dimensions. The two new designs were one with wetted column, consisting of wetted curtains hung in the tower column, and the other one with wetted surfaces, consisting of wetted evaporative cooling pads mounted at its entrance. The air temperature leaving the wind towers with evaporative cooling provisions were much lower than the air temperature leaving the conventional design, and its relative humidity much higher. The air-flow rate was reduced slightly in these new towers. It was found that the wind tower with wetted column performs better with...
Experimental seismic investigation of Sefid-rud concrete buttress dam model on shaking table
, Article Earthquake Engineering and Structural Dynamics ; Volume 37, Issue 5 , 2008 , Pages 809-823 ; 00988847 (ISSN) ; Ghaemian, M ; Sharif University of Technology
John Wiley and Sons Ltd
2008
Abstract
Owing to the devastating M7.6 earthquake of 20 June 1990 that occurred in the northern province of Iran, Sefid-rud concrete buttress dam located near the epicenter was severely shaken. The crack penetrated throughout the dam thickness near slope discontinuity, causing severe leakage, but with no general failure. In this study, nonlinear seismic response of the highest monolith with empty reservoir is investigated experimentally through model testing. A geometric-scaled model of 1:30 was tested on a shaking table with high-frequency capability to study dynamic cracking of the model and serve as data for nonlinear computer model calibration. Three construction joints are set up in the model to...
Analysis of MEOR efficiency to increase recovery in an Iranian reservoir
, Article Scientia Iranica ; Volume 14, Issue 2 , 2007 , Pages 161-168 ; 10263098 (ISSN) ; Roostaazad, R ; Darouneh, E ; Izadi, H ; Sharif University of Technology
Sharif University of Technology
2007
Abstract
Rock samples from the Asmary outcrop formation of the Ahwaz oil rich zone with a porosity of 16% and permeability of 1 md and MIS crude oil with an API value of 42.5 and moderate asphaltene content of 3%, were used to study the effect of the incubation time and flow rate of the displacing fluid in MEOR operations. Five species of rod shaped, gram positive, thermophile and facultative bacteria were isolated and purified from the crude. Due to the high sweep efficiency prevailing in the core flooding system, the effect of the displacing brine flow rate on the oil recovery efficiency was found not to be significant. On the other hand, a 100% increase in incubation time from 7 to 14 days...
Efficiency of copper bioleaching of two mesophilic and thermophilic bacteria isolated from chalcopyrite concentrate of Kerman-Yazd regions in Iran
, Article Scientia Iranica ; Volume 14, Issue 2 , 2007 , Pages 180-184 ; 10263098 (ISSN) ; Yaghmaei, S ; Vossoughi, M ; Jafari, A ; Sharif University of Technology
Sharif University of Technology
2007
Abstract
A mesophilic iron oxidizing bacterium, Acidithiobacillus ferrooxidans, has been isolated (33°C) from a typical chalcopyrite copper concentrate of the Sarcheshmeh Copper Mine in the region of Kerman located in the south of Iran. In addition, a thermophilic iron oxidizing bacterium, Sulfobacillus spp., has been isolated (60°C) from the Kooshk Lead and Zinc Mine near the city of Yazd in the mid-west region of Iran. The variation of pH, ferrous and ferric concentration and cell growth on the time and effects of some factors, such as temperature and initial ferrous concentration, on the bioleaching of chalcopyrite concentrate obtained from Sarcheshmeh Copper Mine, were investigated. Bioleaching...
Modeling highway congestion index for a developing country: The Iran experience
, Article Scientia Iranica ; Volume 14, Issue 1 , 2007 , Pages 1-10 ; 10263098 (ISSN) ; Jafarabady, R ; Bindra, S. P ; Sharif University of Technology
Sharif University of Technology
2007
Abstract
This paper describes an attempt to develop congestion indices for a developing country with a limited sampling. Speed and flow rate information was collected from urban highway traffic flow videotaping in Iran. Video display provided information for traffic modeling when, similar to most of the developing nations, Iran does not have locally developed highway capacity manuals. Processing of the extracted data and traffic modeling provided free and capacity flow information for the selected freeway and principal arterial sections for the capital city of Tehran. The congestion indices were associated, in simple and logical models, with five traffic descriptive variables of travel speed, travel...
Physico-chemical and biological characteristics of Sarabs (spring pools) in the Kermanshah Province of Iran
, Article Iranian Journal of Science and Technology, Transaction B: Engineering ; Volume 30, Issue 5 , 2006 , Pages 621-635 ; 03601307 (ISSN) ; Shayegan, S. J ; Sharif University of Technology
2006
Abstract
Sarabs (spring-fed pools) are an important natural freshwater resource in Iran where they are used for potable, agricultural and recreational purposes. A survey of 17 Sarabs was undertaken in the Province of Kermanshah to obtain data on their water quality and biology which would help inform future management of these multifunctional resources. These Sarabs differed greatly in size (50-30000m2 surface area) and were situated at altitudes of between 622 and 1697 m above sea level. The average dissolved oxygen content and pH of the water was between 4.5 and 10mg O2/1, and 6.95 and 7.6 respectively. The Sarabs differed particularly in their dissolved solids content from 100μS/cm (detectable...
Implementation of green management concepts in sport complexes
, Article International Journal of Environmental Science and Technology ; Volume 3, Issue 3 , 2006 , Pages 213-219 ; 17351472 (ISSN) ; Karbassi, A. R ; Khadivi, S ; Sharif University of Technology
CEERS
2006
Abstract
Implementation of green management in sport complexes can ensure the continuous arrangement and assessment of activities from the environmental perspective and will end up in control and prevention of contaminants. Enghelab sport complex (ESC) in Iran is selected for this study due to its size and long-term activities. Due to the comprehensive plan of the aforesaid sports complex, numerous centers and departments were established in this site in order to materialize its envisioned sports, recreational and cultural objectives. The results of the questionnaires distributed amongst the members and the personnel of the complex revealed that approximately 50 % occupants were not acquainted with...