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Showing 4 results for elmi

- Elham Salehian Dehkordi, - Heeva Elmizadeh,
Volume 0, Issue 0 (3-2007)
Abstract

Landslides represent a critical natural hazard in the Northern Tehran Basin, posing significant threats due to its complex geological setting, rugged topography, and anthropogenic activities such as road construction. This study introduces an innovative hybrid framework incorporating dynamic weighting based on Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) for landslide susceptibility zonation. Unlike conventional methods (e.g., Frequency Ratio [FR], Statistical Index [SI], and Shannon Entropy [SE]), which employ static weights, our approach dynamically adjusts factor weights (e.g., distance to rivers, slope, lithology) using PSO, accounting for temporal variables such as seasonal rainfall and human activity. We compiled rainfall data and 150 landslide events (2005–2024) from local meteorological stations and geological databases. Input parameters included eight key factors (distance to rivers, distance to roads, slope, lithology, elevation, aspect, distance to faults, and land use) alongside seasonal rainfall. Results demonstrate that dynamic weighting improves prediction accuracy by 15% (AUC-ROC = 0.923 for PSO vs. 0.804 for FR), particularly during high-rainfall seasons where river proximity weight increased (vj = 8.2 vs. 7.21 in static models). The PSO-GA hybrid outperformed traditional models, with PSO (AUC-ROC = 0.923) and GA (AUC-ROC = 0.917) showing superior precision. Dynamic hazard maps accurately identified high-risk zones (e.g., near rivers with vj = 8.23 during rainy seasons). This approach offers a robust tool for landslide risk management in urbanized mountainous regions like Northern Tehran and serves as a replicable model for similar environments globally.

Dr Mahdi Elmi, , , ,
Volume 0, Issue 0 (3-2007)
Abstract

Abstract Due to its special geopolitical location at the crossroads of Asia, Europe, and the Middle East, Turkey is considered a key player in the future developments of West Asia. However, in the existing literature, most studies are limited to describing Ankara's foreign policy and less to analyzing the future of geopolitical developments using systematic futures research approaches. This study, relying on the theoretical framework of geopolitical realism in interaction with the scenario-based futures research approach, seeks to fill this gap. The research method is mixed and descriptive-analytical, and data was collected through semi-structured interviews with 15 experts on Turkish issues and also through the analysis of documentary sources. The Delphi method was used to identify the main drivers and uncertainties, and then future scenarios were drawn using the perspective analysis model and cross-sectional analysis. The findings show that the geopolitical future of Greater Anatolia will be shaped by seven main scenarios, the most important of which are: intensification of hydropolitical competition between Turkey, Iraq, and Syria; increasing Turkey's role in the South Caucasus in light of convergence with the Republic of Azerbaijan; continued divergence in Ankara's relations with Tehran, especially in the areas of energy, Kurdish issues, and the corridor. The results show that Turkey's foreign policy in the face of these scenarios will be mainly based on three axes: developing the defense industry and increasing strategic depth, utilizing transit and energy capacities to become the region's geoeconomic crossroads, and continuing the neo-Ottoman policy with the aim of gaining regional hegemony. Therefore, the present study, while providing a systematic picture of possible futures, can help to more accurately understand the opportunities and challenges facing Turkey's neighboring countries in the Anatolian Plateau and serve as a basis for designing more realistic strategies in the field of foreign policy and regional security.

Elmira Azimi, Dariush Sattarzadeh, Lida Bolillan, Akbar Abdollahzadeh Tarf, Mahsa Faramarzi Asli,
Volume 20, Issue 59 (12-2020)
Abstract

The prevalence of chronic health problems is increasing, both in terms of physical health and mental health in modern societies. Meanwhile, the health of individuals in society as human capital is important in advancing the goals of thematic communities. The aim of this study was to investigate the role of physical-environmental factors on the mental health of citizens. This research is applied in terms of purpose and descriptive-analytical method. The statistical population of citizens living in Ardabil was estimated to be 384 using the Cochranchr('39')s formula. The field data collection tool was a researcher-made questionnaire whose validity was confirmed by formal validity and reliability using Cronbachchr('39')s alpha test and combined reliability. The results of this study showed that legibility and visual quality, access to urban green space, security of urban space, quality of urban furniture, mixing and variety of uses have a positive and significant effect on the mental health of citizens. Considering the value of the path coefficient obtained for the independent research variables, among the identified variables, the quality of urban green space with the path coefficient value of 0.44 had the highest path coefficient and had the greatest effect on the dependent variable, ie mental health of citizens. Also, the mixing variable and the variety of uses with a path coefficient value of 0.21 had the least effect on mental health.
Elmira Azimi, Hosin Mobara, Maryam Farzadmanesh,
Volume 23, Issue 68 (4-2023)
Abstract

The emergence of a variety of inequalities, widespread poverty, malnutrition and ... were examples of the effects of urbanization. For this reason, many scholars and experts have focused on the quality of life, in order to improve living conditions and improve the quality of life of human beings. Many studies show that satisfaction with different dimensions and characteristics of the neighborhood affects residents' quality of life. Considering that satisfaction with life, i.e., the full satisfaction of all parts of life, if this kind of satisfaction does not develop among residents, more serious problems such as intra-urban migration, severe class contradictions and the problem of uplifting and down-town faces Accepts. Therefore, identifying the effective factors on residential satisfaction in each neighborhood, which is in accordance with the needs of the residents of that neighborhood, is one of the main goals of urban planners in order to increase residential satisfaction. The purpose of this study was to investigate the effect of location and quality of environment on improving citizens' satisfaction from neighborhoods. The research method was descriptive-analytic, data collection method, library and survey, sample size was estimated 315 by Cochran formula. In order to test the hypotheses presented in this study, structural equation modeling was used in Lisrel software environment. The results of this study indicate that spatial sense of belonging and quality of environment have a significant effect on residents' satisfaction with the neighborhood.


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