Research ArticleOpen accessIn the author namesSystem for Securing Timestamping and Electronic Signing of PDF Documents: Standards, Schematic, and ImplementationMoussa Habiboulaye, Harouna Naroua, Chaibou KadriThis article investigates the standards and principles for implementing electronic signatures in PDF documents, focusing on security and compliance with legal regulations. The current state of digital signatures is examined, highlighting the importance of authenticity, integrity, and non-repudiation. A detailed analysis is provided on the process of generating and verifying electronic signatures using Public Key Infrastructures (PKI) and cryptographic techniques. … …Journal of Computer Science, Vol. 21, Issue 11 · 19 Dec 2025 · 1,864 accessesView PDFCite
Research ArticleOpen accessIn the author namesCrop Yield Prediction in Niger Using Machine Learning TechniquesMahaman Lawali Inoussa Garba, Naroua Harouna, Chaibou Kadri et al.Agriculture is the most impactful sector on Niger's economic growth. Stresses related to climate change and the environment are leading to a continuous decline in crop yield. Accurate crop yield forecasting is of paramount importance for farmers, government, policy makers, and other stakeholders to make most appropriate decisions regarding resource allocation and food security. This study examines the power of … …Journal of Computer Science, Vol. 21, Issue 8 · 16 Sep 2025 · 5,792 accessesView PDFCite
Research ArticleOpen accessIn the author namesA Generic Syntax Analyzer for the Computerization of African LanguagesYahaya Morou Ganda, Harouna Naroua, Bachir Moussa IdiThis article enters within the framework of a contribution to the computerization of African Languages. It presents a generic parsing tool designed for West African languages despite their individual specificities. The genericity of the tool resides in the fact that it is adaptable to any West African language while using a minimum of resources. It only needs an etiquette dictionary … …Journal of Computer Science, Vol. 21, Issue 4 · 4 Mar 2025 · 4,342 accessesView PDFCite
Research ArticleOpen accessIn the author namesAgricultural Crop Disease Detection Using Convolutional Neural NetworksAtsu Alagah Komlavi, Harouna Naroua, Chaibou KadriMitigating food insecurity in Niger is of paramount importance. According to some researchers, agricultural yield is declining. The permanent annual food shortage was estimated to be between 25 and 50%. Loss of cereal agricultural production is caused by pests and plant diseases. Knowing that ordinary techniques became inefficient. Automatic detection of plant diseases using artificial intelligence becomes the best solution. … …Journal of Computer Science, Vol. 21, Issue 3 · 24 Jan 2025 · 7,547 accessesView PDFCite
Research ArticleOpen accessIn the author namesOn the Computerization of African LanguagesHarouna Naroua, Lawaly SalifouIn this article, a computer tool for processing African languages has been designed. It is intended to be a contribution to the automatic processing of African languages. The current study is focused on West African languages where five main languages from Niger, two from Mali and one from Burkina Faso are considered. After a brief review of African languages processing, … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 18 Nov 2016 · 7,165 accessesView PDFCite
Research ArticleOpen accessIn the author namesComputer Simulation of a Radiative MHD flow in a Rotating FluidHarouna NarouaA hydromagnetic free convection flow has been modeled and simulated. The flow is considered unsteady, near a moving infinite flat plate in a rotating fluid. For the radiative heat transfer to be significant, very high temperatures are involved rendering the problem highly non-linear. The simulation is based on a generic finite element scheme coupled with a stepwise Lagrange polynomial. The … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 8 Nov 2016 · 7,028 accessesView PDFCite