الفهرس 
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Abstract
The present study consists of three chapters. Chapter 1 includes an overview for the internal structure of the Sun along with the most prominent period of the solar activity cycle. Also, in this chapter the sunspot activity indices with different solar and plasma parameters were discussed. The unequal distribution of various solar parameters for different activity phenomena has been presented. Studies on the long-term and intermediate periodicities for different solar parameters are also presented.Chapter 2 presents an extensive study for the impact of asymmetrical distributions of hemispheric sunspot areas (SSAs) and sunspot numbers (SSNs) on different solar parameters. First, to remove the noises or other fine-scale structures/rapid phenomena, the 13-month running average has been applied. The cross-correlation analysis is also performed for the sunspot indices. This chapter presents a study of the N-S asymmetries for some solar and plasma parameters based on the dominance of the hemispheric sunspot activity indices (SSAs and SSNs) throughout the time interval 1945-2017 (which cover seven solar activity cycles 18-24). The results of N-S asymmetries for the considered parameters according to the dominances of SSNs, are compared to those based on SSAs, demonstrating the dissimilarities between the influence of both solar activity indices on solar parameters. Our results and conclusions are discussed and summarized. The data analysis and treatment are discussed.