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Showing 147 results for Type of Study: Applicable
Spatial distribution of alluvial fans for evaluating tectonic activity: A case study from the Southern Kharqan mountain range, Hamadan Province
Dr Esmaeil Najafi, Mr Abolfazl Faraji Monfared, Dr Mehdi Ahmadi,
Volume 25, Issue 76 (3-2025)
Abstract
The extent of mountainous and desert areas in Iran has caused the emergence of well-known geomorphological phenomena. Alluvial fans are landforms found in various locations. Identifying and evaluating their impacts can be valuable for natural hazard management and land use planning. In this study an attempt hs been made  to evaluate the status of tectonic activities in the south of the slopes of the Kharqan mountain range in the northeast of Hamedan province. Different maps were utilized to examine the development process of alluvial fans and present evidence of tectonic activity, including the Gozal Valley, Karafs, and several smaller alluvial fans. The findings of this study revealed that tectonic activity in the Gozal Valley cone remains active, while the alluvial fans located between the Gozal Valley are inactive. Further evidence in the bed of the Gozal Valley cones suggests tectonic changes caused by fault activity, resulting in the alteration of the riverbed's drainage pattern and subsequent destruction and erosion of the surrounding areas. Additionally, changes in drainage patterns and sediment depth on the surface of alluvial fans can be attributed to tectonic activities within these fans. Geological logs illustrate both prolonged, slow periods and active periods during various geological eras in the study area. Ultimately, tectonic activity initiated with a lengthy, sluggish phase, followed by continued tectonic activities and fluctuations.

The Application of KNN Algorithm in Optimizing Urban Land Use with an Emphasis on Earthquake Risk, Case study: Sanandaj City
Dr Shahrivar Rostaei, Dr Rahim Heydari Chyaneh, Mr Ayoub Zoghi,
Volume 25, Issue 76 (3-2025)
Abstract
The occurrence of earthquakes and the losses and damages caused by it have always imposed a serious threat to the city, residents and assets, so that it has made planners and city managers to provide logical and scientific solutions to make cities safer. Securing cities against earthquakes will not be achieved only by creating strong structures, and we must take steps to reduce urban vulnerability through optimizing urban land use. The purpose of this study is to determine the optimal urban areas for the development of the city with the aim of reducing the vulnerability of Sanandaj. For this purpose, KNN method has been used as a model with relatively high accuracy to evaluate the optimal land use of Sanandaj city with an emphasis on earthquake risk. The obtained model output shows that about 32% of the city area is in optimal condition and district 2 with 42.78% equivalent to 406 hectares and district 4 with 50.85% equivalent to 658 hectares provide an optimal condition for the development of the city, towards reducing urban vulnerability and increasing urban land use optimization. The general condition of the city is not suitable in terms of optimality and the neighborhoods located in districts 1 and 2 are in a very inappropriate condition due to high population and residential density, very poor permeability and low adaptation of land uses. In evaluating the model, the value of the area below the curve is 0.951, which indicates the desirable performance of the model in examining the subject. 
Convection initiation
Doc. Zahra Ghassabi, Doc. Hoshang Ghaemi, Mr. Ebrahim Mirzaei,
Volume 25, Issue 76 (3-2025)
Abstract
The structure of deep moist convection can be influenced by various factors, including wind shear, available potential energy of convection, relative humidity, and vertical distribution of these variables. Among these factors, wind shear plays a more significant role in the creation of convection. The interaction between large-scale and synoptic-scale processes, along with the adjustment of available potential energy for convection and the presence of convection inhibitors, creates conditions suitable for the development of convection. The large-scale average reduces the convection inhibitor, while even small vertical velocities, such as a few centimeters per second, can have a noticeable impact on the environment's sounding. The presence of potential instability is also considered an important factor in initiating deep moist convection. When the temperature reaches the critical point and the convection inhibitor is removed, moist deep convection begins. If an air parcel rises above the lower stable layer with low relative convective inhibition energy and high relative free convective potential energy, it supports the development of deep moist convection. The initiation of updrafts by warm air masses and the subsequent development of convection depend on parameters like vertical wind shear and the inversion cap of the environment, among others. Large-scale convective systems can be triggered with less forcing due to the significant uplift of the air mass from the surface to the convection level along the front.

Investigating the effect of neighboring buildings’ orientation and the passage on the amount of energy consumption (case example: common residential buildings in Tehran)
Mr Meysam Zekavat, Dr Mansoure Tahbaz, Dr Mohammad Reza Hafezi,
Volume 25, Issue 76 (3-2025)
Abstract
Buildings are the primary consumers of energy in the country, accounting for approximately 30-50% of total energy consumption. In our country, around 33% of energy is allocated to residential, commercial, and public buildings. The objective of this study is to examine the impact of a building's orientation on its energy consumption. The research is focused on the common 4 and 5-story residential buildings in District 5 of Tehran, specifically on Ferdous Sharq Blvd. The research adopts a descriptive-analytical methodology based on both organizational and field data collection. Six similar residential blocks in different lighting positions were selected to gather data. These blocks share identical characteristics in terms of land area, infrastructure area, number of floors, heating and cooling systems, and other factors. The only distinction among them is their location within a passage. Subsequently, Design Builder software was employed to simulate and compare their energy consumption. The findings of the research reveal that the average energy consumption, with a precision of 98%, for the northern blocks is 7,261 kilowatt hours per square meter per year, while for the southern blocks it is 11,247 kilowatt hours per square meter per year, and for the overall blocks it is 5,254 kilowatt hours per square meter per year. This is approximately three times the ideal building's energy consumption. The northern blocks consume about 5% more energy than the southern blocks. A block that receives light from three sides (north, south, and west) consumes about 11% more energy than the average, whereas a block that receives light from two sides (north and south) consumes about 5% less energy than the average. The north blocks have an energy label of D, whereas the south blocks, except for the end block that receives light from three sides (north, south, and west), have an energy label of C. Consequently, the south blocks generally demonstrate better energy consumption performance.

The model of development and evolution of the spatial structure of Daedeok Innopolis: From science town to innovative ecosystem
Dr Hafez Mahdnejad, Dr Ahmad Zanganeh,
Volume 25, Issue 76 (3-2025)
Abstract
Innopolis Daedeok is a beacon of scientific excellence and technological innovation, serving as the nerve center of South Korea's research endeavors. By leveraging the presence of esteemed research institutions and universities, this hub has created a fertile ground for commercializing cutting-edge technologies. The research methodology employed is descriptive-analytical and developmental in nature. The findings indicate that Innopolis Daedeok is strategically divided into five distinct regions, spanning 27.7 square kilometers, to achieve its operational objectives. Notably, 11% of South Korea's Ph.D.-level researchers are affiliated with Innopolis Daedeok. Currently, a workforce of 22,000 researchers and employees is engaged in advanced research, with 10% of the country's research workforce concentrated in this hub. The spatial expansion of Innopolis Daedeok has unfolded in four stages: the establishment of the Daedeok Science Town (1973-1993), the creation of innovation (1993-1997), the formation of an innovation cluster (1998-2003), and the growth stage of the innovation cluster (2004 to present). This evolution has enabled Innopolis Daedeok to become a global innovation hub, with a unique triple helix model of government, industry, and academia collaboration. The development and evolution model of Innopolis Daedeok is characterized by three distinct stages: the initial stage (science park model), the development stage (technopolis model), and the maturity stage (innovation cluster model). This model serves as a benchmark for other innovation hubs, highlighting the importance of strategic planning, collaboration, and investment in research and development.

Determination of suitable areas cultivation of maize Based on the supply of heat needs in northwestern Iran
Zeinab Ebrahimighalelani, Dr Javad Khoshhal Dastjerdi, Dr Hojatolah Yazdanpanah,
Volume 25, Issue 77 (6-2025)
Abstract
plants needs a certain amount of heat at the time of planting and during its growth period, The temperature requirements of the 704 single-cross cultivar of maize in Moghan weather conditions have been found in this study to determine its temperature requirements in its different growing stages in order to investigate the feasibility of its planting in the north west regions of Iran. Daily weather statistics presenting the minimum, maximum and average temperature of 51 Synoptic stations from Meteorological Organization of Iran have been used in this study, their statistical periods range from 1 to 30 years (1365-1395), the statistics and information about 5 main phenology stages of 704 single-cross variety maize which are recorded continually in Agricultural Weather Service of Moghan station in Pars Abad from 1390 to 1391 are provided. Then the 15-day averages from April 21st to July 22nd is obtained. The relationship between the temperature and the height in the linear regression is calculated .Map of heat supply date for seed sowing in all stations from the first half of May was drawn in the GIS. The plant collective growth degree days and the number of days in every phenology phase are calculated for all of the stations and the related maps are plotted.Then,the final map plotted by combining the layers thermal, height, slope and land use in the study area. The results of this study only 27.6% of the study area is able of maize cultivating.

Assessment of water and soil resources in the Gando Protected Area
Jalil Badamfirooz, Leyla Sharifi,
Volume 25, Issue 77 (6-2025)
Abstract
By evaluating the functions and ecosystem services of protected areas, it is possible to help planners and decision makers of land management and sustainable development in the region and the country. The present study specifically assesses water and soil resources in the Gando Protected Area and the economic valuation of these services. In order to model the ecosystem services of water balance, soil protection and water quality, a hydrological model -WWPSS- based on RS data was used. The simulation was performed using a series of one-degree square meters (one hectare) on a monthly scale. In order to evaluate the economy, the Invest model and the alternative cost method were used. The results showed that the total water produced in this region is 401,205,344 m3 per year. Also, the minimum, maximum and average water budget of all three are negative and are equal to -1492.76, -38.04 and -639.24 mm per year, respectively, which indicates the lack of rainfall and the intensity of evapotranspiration in this region. The average potential of surface water pollution is 4.5% and this area prevents erosion of 2 tons per hectare per year. The real economic value of water production and soil protection in 2019 with inflation reform of 20.18%, 67.54 and 2729.65 billion rials, respectively, is estimated. Three scenarios with discount rates (combined) of 8, 12 and 15% in 5, 10, 15- and 30-year periods were used to determine the economic value of the functions of these resources. The results showed that for example; With a discount rate of 15% and over a period of 30 years, the economic value of water production and soil protection will reach 4471.82 and 180.730 billion rials, respectively. totally, the economic value of water production and soil protection is 0.35 and 14.17% of the total value of the region.

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