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Showing 4 results for The Persian Gulf


Volume 10, Issue 4 (12-2022)
Abstract

Aim: Temperature is one of the factors that can affect the survival of sea turtle hatchlings and nest success. As a critically endangered species, Hawksbill sea turtle nests in several Iranian islands. Few studies have so far been conducted on the effect of temperature on nesting success of this species in the Persian Gulf. The objective of this study is to investigate the effects of temperature on the survival of turtle hatchlings in two nesting areas.
Methods: The temperature of the sand and the nest was recorded and analyzed using thermochron data loggers for several consecutive years from 2019 to 2021, from the beginning of the nesting season until the emergence of hatchlings. The three criteria of incubation success, mortality, and emergence success were chosen as indicators to evaluate nest success.
Findings: The lowest average annual sand temperature was related to Kish Island. The annual average temperature of the nests in Kish and Qeshm Islands showed a significant difference. The Kish nests were at a level higher than the thermal tolerance threshold (33 to 35°C) for less than five days. Examining the success of the nests showed that Kish has a higher than average hatching success than Qeshm, but this result does not hold true for the other two criteria.
Conclusion: Although checking the temperature of the sand and the nest can provide us with useful information regarding the survival of the turtle hatchlings and the implementation of protection decisions, investigating other factors besides temperature can be helpful as well.
 
Maryam Karimian, Omid Beyraghdar Kashkooli, Reza Modarres, Saeid Pourmanafi,
Volume 11, Issue 2 (5-2022)
Abstract

The DINEOF algorithm is a parameter free technique based on iterative EOF analysis that is used to calculate the missing data in a given satellite data set (without requiring any prior information). In this study, the DINEOF technique has been used to fill the gaps in chlorophyll-a data series in the Persian Gulf and Oman Sea. Level 3 data (4 km spatial resolution) of chlorophyll-a concentration obtained from MODIS sensor (2003- 2020) for the study area were used. In some of the images several gaps were found in different months of the year. Images with gap in the Persian Gulf and Oman Sea were reconstructed by rtsa.gapfill R-package and DINEOF algorithm in R software. The linear regression analysis was performed between the missing and reconstructed data, and also parameters such as RMSE, MSE, MAD and SNR were calculated to evaluate the validity and performance of the DINEOF algorithm. The maximum number of the gaps in data series were found in July. Hence, the images of July have been examined and reconstructed as the case study. The original maps of chlorophyll-a concentration showed that the maximum number of the gaps were in July 2009 and 2015. Evaluation of the results showed a high accuracy of DINEOF-reconstruction method (e.g. in July 2014, R2 = 0.83, RSME = 0.34, MAD = 0.14, MSE = 0.10). The results showed that the implementation of the DINEOF algorithm (in R) to reconstruct the gaps in chlorophyll-a concentration images could serve as a rapid and efficient technique.

Volume 15, Issue 1 (3-2023)
Abstract

  
 At the beginning of the sixties, Bushehr was the governorate of all the ports and islands of the Persian Gulf, which was politically under the jurisdiction of Fars province. The ports and islands of the Persian Gulf and its coastal areas in the past periods always had a limited population and a low population density due to the political and social conditions as well as its climatic condition. At the beginning of the sixties, with the implementation of agrarian reforms in the country, conditions were created that allowed the rural population to move and migrate more. In this research, an attempt is made to investigate the conditions that accelerated the process of rural migration in the governorate in the 1960s and 1970s. The present research method is descriptive-analytical based on historical documents and sources. According to the findings of the research, in addition to the implementation of land reforms, which freed a large part of the labor force in rural areas, and this additional force went to the city to find work, the climatic and atmospheric conditions of the region and the excessive deprivation of rural areas are also among the reasons. The main expansion of rural migration was in the Governorate of Ports and Islands. This region, which had the lowest urbanization rate in the country in the years before the sixties, faced a high urbanization growth in the following years.

Volume 25, Issue 2 (12-2021)
Abstract

Conflict of interest, which is related to the conflict between public duties and private interests of officials of public institutions, is one of the most important areas of corruption in the structure of the administrative system that may lead people to abuse their position and prefer private interests over Lead public interests; Therefore, designing a comprehensive criminal policy to manage this situation is necessary. The success of managing such a situation depends on focusing on effective measures to prevent its occurrence. Considering the importance of comparative studies in the present study, we have sought to answer the question with a descriptive-analytical method of what approach the countries of the Persian Gulf region have taken towards managing the interests of conflict and preventing corruption. The research findings show that Iran, Bahrain and Qatar have not been able to manage this issue specifically and independently through legislation. On the other hand, other countries have tried to prevent corruption caused by such a situation by formulating legislative criminal policy, which is done both through social prevention measures, especially in the form of ethical codes, and through situational prevention measures such as Depriving persons of public office or deprivation of private interest, the obligation to abstinence from interfering in a matter in which they have a personal stake, and the disclosure of private interests which, by controlling the conflict of interest situation, prevent individuals from abusing.

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