- Religious Role and Influence of Hadhramis in Indonesia.
- Hadhrami Diaspora: Origin, Route, Transportation, and Assimilation
- Nationalism and Contemporary Politics of Hadhrami.
- Cultural Identity of Hadhramis in a Multicultural Society of Indonesia: Language, Music, Arts, Literature, Food, and Dress Code.
- Hadhrami Social Identity: Stratification, Marriage and Kinship System, and Relation with Local People.
- Hadhramis’ Role in Economy, Business, Trade, and Commerce.
- Hadhrami Activities in Education, Press, and Publication in Indonesia.