Showing 8 results for Azari
Seyd Fateme Hashemi, Ali Shahnazari,
Volume 0, Issue 0 (3-1921)
Abstract
Huge floods carrying enormous amounts of transported silt occur annually in the Talar River's catchment area in the province of Mazandaran. In order to investigate the sediment transport from the specified watershed, samples were collected at five different time intervals, specifically on May 22nd, 2018; May 20th, 2018; May 17th, 2018; and May 16th, 2018. The study focused on two dates, 17.11 and 5.11, and a specific stretch of land measuring 16.75 km between Darya Malakala-Najjarkala and Arab Roshan, located outside the urban area. The purpose was to analyse the patterns of sedimentation and erosion throughout a five-year period (2016-2021) using the HEC-RAS model. Inspected. The sediment transport and volume of sediment were analysed and studied based on the long-term statistics of the Kiakla hydrometric station. This analysis focused on flood conditions with return periods of 2, 10, 25, 50, and 100 years for the watershed of the station. The findings indicate that the cumulative sediment input at the start of the simulation period is 0.9 million tonnes lower than the total sediment at the end of the period. Additionally, the river is susceptible to erosion in the majority of situations. Furthermore, during the initial period (22.4-24.7), the sediment's mean height measures 11 cm, with a substantial sedimentation of 6 million tonnes. The deposition during the second period (2018-05-20) amounts to roughly 1 million tonnes. In the third quarter, there is a relatively consistent pattern. During the fourth phase, the erosion conditions, in terms of both depth and volume, are unsuitable for harvesting. During the fifth phase, which lasted from 11.5 to 16.75, the erosion amounted to approximately 8.3 million tonnes. The erosion height change in the fifth interval ranges from 10 to 20 cm. All distances are measured in km from the sea. Under such circumstances, sediment removal is unfeasible, but it is advisable to consider flood management and river engineering measures.
Sajad Ferdowsi, Najmeh Nazari Mazidi, Mehdi Modudi Arquhdi,
Volume 18, Issue 49 (3-2018)
Abstract
This study was conducted to estimate the index of Remaining carrying capacity of host community to tourism development. The method of data analysis is descriptive-analytical. In order to collect the initial data, a field survey and a questionnaire were used. The study population is comprised of specialists related to the subject and residents of Shahroud (host community). The sample size for distribution of the host community questionnaire is 125 people (65 inhabitants, 41 tourism business owners, 19 officials). In this regard, 20 questionnaires have been considered for the survey of experts. Method of determining the carrying capacity of the host community in the study adapted of Battelle Environmental Evaluation System (BEES) that it is used for environmental impact assessment (EIA) and the limits of acceptable change (LAC). The results of data analysis showed that based on barometer of sustainability Alan Prescott, and according to the parameters obtained by (0.426), carrying capacity of the host community, by positioning the floor of 0.41 to 0.60 of the situation is balanced state. Therefore, it is understood that the host society has a balanced attitude towards tourism and is not opposed to its development. As a result, it is essential to use existing potentials in order to sustainable tourism development, necessary planning should be made by tourism managers to attract more tourists to this area.
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Mrs Masooume Darmani, Mohammad Nohtani, Haydeh Ara, Ali Golkarian, Salman Sharif Azari,
Volume 18, Issue 51 (6-2018)
Abstract
One of the most important processes of erosion and sediment transport in streams is the river most complex engineering issues.this process special effects on water quality indices, action suburbs floor and destroyed much damage to the river and also into the development plans Lack of continuity sediment sampling and measurement of many existing stations. due to the low number of hydrometric stations in Iran and the lack of continuity of sediment sampling and measuring in many existing stations, on one hand the exact amount of sediment load in many rivers in the country is not available and because of differences in climatic, hydrological and topographical conditions in the country, on the other hand, the preparation and calibration of sediment Erosion Models different regions, is unavoidableCalibration models of erosion and sedimentation in different locations is difficult and requires financial capital andthe time . the But evolutionary optimization algorithm able to resolve this problems of mathematical and experimental methods in this paper, a new optimization algorithm spiders can be made to education And the evolutionary pattern for input (discharge and precipitation) and rain-gauge gauging stations and Watershed Kardeh designated evolutionary algorithms and artificial network performance for 24 year 24-year dam catchment Kardeh for the period studied. In conclusion, the results proved that social spiders optimization algorithm t better resultspredic to for sediment in watershed Kardeh
Mojtaba Shahnazari, Zahra Hejazizadeh, Mohammad Saligheh,
Volume 20, Issue 59 (12-2020)
Abstract
Abstract
In this research, while studying climate conditions in the current period and analyzing changes in temperature, precipitation level, and the sunlight received, current conditions were also analyzed based on daily data from synoptic stations in the region, which had meteorological data recorded for at least 30 years. Given the environmental conditions necessary for the growth of rice, the availability of its phenological data, its high-low temperature thresholds, the Degree Day systems needed for the completion of its life cycle, and the phenological processes related to its economic production, a suitable agricultural calendar was specified. During the March-July period, this calendar showed variations in different provinces. Based on the current temperature conditions and the probable continued warming trend of the planet in the decades to come, nwoDscale was applied to the output from the atmospheric general circulation model MCdaH3 under scenario using LARS-WG5 model. In this study, years between 1969 and 1990 were used as the base period, while years between 2046 and 2065 were studied as the future period. Temperature and precipitation conditions for the future period were simulated. Obtained output was then studied and compared with temperature conditions that were suitable for the plant to grow in the region. With some differences, results showed that the agricultural calendar for rice in Gilan and Mazandaran provinces will shift to winter. Given the different temperature conditions of Golestan province, its agricultural calendar will shift to spring.
Mohsen Shaterian, Yones Gholami, Azam Nazari,
Volume 22, Issue 66 (9-2022)
Abstract
The most important problem of the worn- ut context in urban is that these textures can not meet the needs of contemporary life. This can be of tissue due to the specific characteristics of a rare opportunity to play an effective role in sustainable development, one of the main strategies in this area can be a new urbanism approach. The aim of this study is to evaluate the principles of new urbanism is in the neighborhood of the central city of Kashan. The research method is analytical and is the main tool for data collection was a questionnaire. The sample size of 382 was calculated by the formula. To analyze the results of the questionnaire T-test through SPSS software is used for modeling equations using Amos software. The results suggest that indicators of modernity in the city of Kashan in central areas is not desirable, but a significant difference in terms of modern urban indicators in both new and old tissue there. The principles of modernism in town, the stand by weight of the total facade nodal regression 0.98 has most effective and the index of participation due to lack of poll officials on matters related to the principles of new urbanism is a minimal role in the neighborhood.
Engineer Amenh Khosravi, Doctor Mahmood Azari,
Volume 22, Issue 66 (9-2022)
Abstract
The study of meteorological characteristics and its variability is important in assessing the climate change impacts for water resources management. Trend analysis of hydrological and meteorological time series is a method for determining the change in climate variables that is performed with different parametric and non-parametric methods. In this research, the annual, seasonal and monthly trends were analyzed regarding rainfall and temperature time series for 1986-2017 in 28 stations of Kashafroud basin in the Northeast of Iran. For this purpose, the annual, seasonal and monthly trends were evaluated using non-parametric Mann Kendall and Pettitt test at 95% level significance. The results showed the trend for the monthly maximum temperature in spring and winter and also the annual trend for all stations was increasing, whereas the summer and autumn pattern differed. The trend of minimum temperature in all seasons and stations do not have a uniform pattern. The results of precipitation trend indicated that the annual precipitation of the basin had not changed and did not have a significant trend in 5% level of significance. Precipitation of the basin in the winter decreased. There was an increasing trend in the Southern half of the basin in autumn. The noticeable decrease of precipitation in winter season especially during January and February with an increase in November can be a serious challenge for water resource management of basin during the dry season.
Dr Mostafa Mirabadi, Mr Hosein Nazari, Dr Sadegh Besharatifar,
Volume 23, Issue 71 (12-2023)
Abstract
One of the key measures in the passive defense debate Critical facilities and facilities not to be hidden, sensitive and important is choosing the right place for them. Given the complexity of the problems Related to choosing the right place for creating custom applications various factors must be considered. The purpose of this study was applied and considering that specific method has been used to identify optimal locations for prison location which is less used, it is considered a development and is, from a methodological point of view, an analytical descriptive research. The method of data gathering is documentary and field. In this research 14 criteria have been used to locate ideal zones for prison establishment. So tools and software like software Arc GIS In order to store, manage, process and analyze data And also the AHP model In the form of software Expert Choice, Depending on the purpose of the study and the type of criteria, Various functions such as distance function, slope function, slope direction function and digital model function Height in software Arc GIS They are used to create maps. The results of locating operations were to identify different zones in the city of Doganbadan Finally, considering the distance dimension and access status of the zones, four optimal zones were introduced. These zones (with total area of 5382 square kilometers) surrounded by the village of Talkhab, respectively, of the village of Gardanqalat, around the village of Dezsoleiman and the village of Baba Muhammad.
Aliakbar Jafarloo, Monireh Ghofran, Sahar Nazari,
Volume 25, Issue 77 (6-2025)
Abstract
Considering the recent challenges of urban and rural areas of the country, in the previous years, urban and rural areas of Iran will face uncertainties and major issues. The purpose of the land and the elimination of the challenges of urban and rural issues in the country in the future requires identifying these issues and planning to fix or decrease its effectiveness. Therefore, in this research, using a futuristic approach that has a qualitative-descriptive approach, the purpose of the research was investigated. To achieve this goal, first, with the use of research literature and library studies as well as the help of 70 experts in various fields, first major issues in urban and rural development and land were identified in the horizon of Iran 1420. Subsequently, with the method of qualitative analysis and experts, the strategic scenarios of the country was presented to resolve the challenges of the country in the 1420 horizon. The results of the study showed that the country's study in the horizon of Iran 1420 with sudden abrupt disorders and increased uncertainty alongside economic, social, political, environmental, demographic, geopolitical, climate change, cyberspace, increase inequalities And there will be no predicted and untreated threats. In this regard, 20 future scenarios were designed and designed to address the macro issues presented in the research, which are designed and designed to challenge current assumptions and important questions for the future of the country. These scenarios show a number of strategic considerations for how to prepare the country to meet the developing needs of urban and rural community in the horizon of the country of 1420 in the face of a very dynamic and uncertain future.
