m. karimian

Chlorophyll-a concentration is among the most important parameters used to investigate the primary production in marine ecosystems. Chlorophyll-a concentration is influenced by climatic/environmental factors, including Sea Surface Temperature (SST). Satellite sensors are able to provide reliable products of chlorophyll-a concentration and SST data with an adequate spatiotemporal resolution. In this study, level 3 (resolution 4 km) MODIS monthly products of chlorophyll-a concentration and SST  from year 2003 to 2018 of the Persian Gulf and the Oman Sea were used. The data were transformed into a raster format and the values of each pixel were extracted. Several gaps were observed in MODIS products of chlorophyll-a concentration. The Data INterpolating Empirical Orthogonal Functions (DINEOF) algorithm was used to reconstruct these gaps. Pearson correlation procedure was applied to analyze the correlation between chlorophyll-a concentration and SST. Results showed that during the study period, the correlation between the two parameters was negative (-0.44 to -0.67) and significant in the most part of the study area. The correlation coefficients in December were negative (-0.67 to -0.05) and significant in the Oman Sea and the most areas of the Persian Gulf, while in July those relationships were mostly positive (0.13 to 0.64) and significant.

In this paper, a feedback control method is employed for synchronization between two identical chaotic fractional order LU system (FOLUS) with the new parameters. We have shown that the convergence rate of synchronization error. Therefore, use encryption and its analysis for the chaotic FOLUS. In addition, we show that the method used here is better than other existing algorithm.

The inevitable impacts of new technologies, environmental and climate change, transformation of cultural relations, change of cultural structures in housing is evident, but in some cases the scope of these changes and changes cannot be ignored because otherwise the audience will not be responsive to these changes. Although the concept of flexibility is not over a few years, it has been seriously considered, but dealing with the concept of flexibility in housing and housing is one of the issues that can be considered in this article. This research is of the kind of applied and its method of research is qualitative, which has benefited from the research method of descriptive - analytic and collecting data based on documentary studies, literature review, resources, and analysis and used for explaining the topic in logical reasoning method. At the end, flexible design strategies have been proposed in housing planning and some solutions have been addressed in Iran.

In this study we produced a new method for solving regular differential equations with step size h and Taylor series. This method analyzes a regular differential equation with initial values and step size h. this types of equations include quadratic and cubic homogenous equations with constant coeffcients and cubic and second-level equations.