Publications (10550)
ARTICLE
Flexible Dependence Modeling for VaR Using Bernstein’s Copula
Vini Yves Bernadin Loyara, Fabrice Ouoba Kpèbbèwèrè Cédric Somé , Remi Guillaume Bagré and Diakarya Barro
In this work, we establish theoretical and numerical links between the Bernstein copula, the Bernstein polynomial, and Value at Risk (VaR) in the context of dependence approximation in financial risk. Thanks to the smoothing induced by this copula, we express the portfolio VaR as the quantile of an approximate joint distribution, highlighting(...)
copulas, Bernstein copula; multivariate dependence; degree of discor- dance; value-at-Risk; Bienaymé-Tchebychev inequality.
ARTICLE
Production technology and physicochemical and microbiological characteristics ready-to-drink orange juice sold in Ouagadougou city’
CISSE Hama , TRAORE Roukiatou , ZONGO Oumarou , DJIBRINE Adoum Oumar , SOU Serge , SAWADOGO Adama , Abdelsalam A. Doutoum and SAVADOGO Aly
Oranges are consumed in many African countries. In Burkina Faso, they are consumed in various forms. In particular, they are used in the production of juices and nectars. Orange juice is a non-concentrated, undiluted, and unfermented liquid with a variable chemical composition and diverse properties. The objective of this study was to evaluate(...)
Orange juice, Process flow diagram, Ready-to-drink, Microbiological analyses, Physicochemical analyses, Ouagadougou
ARTICLE
Foncier et gouvernance migratoire en milieu rural. Les relations intercommunautaires à l’épreuve de la marchandisation de la terre
Zongo Mahamadou,
Depuis l’époque coloniale, les politiques de développement ont favorisé le développement de puissants courants migratoires, internes et internationaux, qui se sont maintenus voire amplifiés après les indépendances. Développées en dehors de toute intervention directe des États, ces migrations se sont progressivement structurées autour de l’inst(...)
Foncier, PDI, Cohésion sociale, Crise sécuritaire, Burkina Faso
ARTICLE
Étalement urbain et accessibilité à l’eau potable dans la ville de Tahoua (Niger)
ZOMA Vincent,OUAKASSO Abdoul-Majid Mahamadou,COMPAORE Georges
L’expansion rapide de Tahoua met en péril l’accès durable à l’eau potable, soulignant la nécessité de concilier urbanisation et gestion hydrique. L’objectif de cette étude est d’analyser le lien entre l’étalement urbain et l’accès à l’eau dans la ville de Tahoua. La démarche méthodologique s’appuie sur une approche mixte combinant collecte de(...)
Urbanisation, étalement urbain, Eau potable, Accès, Tahoua, Niger
ARTICLE
pH and temperature-dependent gelation of Torreya grandis nut protein: Molecular interactions and gel network formation
Abel Wend-Soo Zongo, Kaili Gao, Xiaohua Nie, Yuanchao Lu, Jose Manuel Lorenzo, Ningxiang Yu, Xianghe Meng
Understanding the gelation behavior of novel plant protein under varying pH and temperature conditions is crucial for designing food systems with tailored texture, stability, and functional properties. In this study, we investigated the effects of pH and temperature on the aggregation behavior and heat-induced gelation of TGNP. The results sho(...)
Torreya grandis; protein gelation; aggregation; disulfide cross-linking; low gelation concentration
ARTICLE
LPWAN Localization via RSSI/SNR Fingerprinting and Lightweight Machine Learning
Désiré Guel, Flavien Hervé Somda, P. Justin Kouraogo, Boureima Zerbo and Oumarou Sié
Accurate geolocation for low-power wide-area (LPWAN) devices is desirable when GNSS is unavailable or too energy-expensive, yet RSSI-/TDoA-based approaches are often fragile under channel variability, collisions and cross-device heterogeneity. We address this gap with a reproducible, tabular pipeline that maps LoRa RSSI/SNR/ToA and PHY metadat(...)
LPWAN, LoRA, Localization, Fingerprinting, RSSI, SNR, IoT, Machine Learning
ARTICLE
Global Properties of a Fractional Order Model of a Vector-Borne Disease
Boureima Ouedraogo; Ali Traoré, Harouna Ouedraogo
We present here a fractional model in the sense of Caputo of a vector-borne disease with insecticide resistance genes. This study is important because it contributes to our understanding of vector-borne disease transmission dynamics using the notion of dif- ferential operators. The use of fractional derivatives in the model provides a memory e(...)
fractional differential equation, Lyapunov function, stability, vector-borne disease
ARTICLE
The effect of macroprudential policies on bank risk in the west African economic and monetary union
Yimbar Joseph Somé, Relwendé Sawadogo
This paper examines the effect of macroprudential policies (MaPs) on individual bank risk-taking in the West African Economic and Monetary Union (WAEMU) using a panel of 92 banks across seven countries over the period 2005–2021. Using a fixed-effects estimator with lagged and contemporaneous regressors, complemented by a system-GMM estimator a(...)
Bank Risk Macroprudential policy WAEMU
ARTICLE
Innovative and Secure Private Key Synchronization Mechanism Between Devices Using Peer-to-Peer Approach in Passkeys System
Assane ILBOUDO, Didier BASSOLE, Désiré GUEL
Passkeys are a passwordless authentication method that is increasingly being adopted. Based on asymmetric cryptography, they offer a secure and promising alternative to traditional passwords. In this paper, we propose a new secure approach for passkey synchronization based on a Peer-to-Peer mechanism between devices. Our secure services integr(...)
Elliptic Curve Diffie-Hellman, Passkey system, Zero-Knowledge Proofs, Security
ARTICLE
Trajectories of serum creatinine and associated factors in an outpatient chronic kidney disease cohort in Burkina Faso: a latent class analysis
Lengani HYA, Tapsoba D, Kabore R, Kambiré AL, Kissou PF, Sawadogo A, Sanou G, Coulibaly G, Lengani A
Introduction Chronic kidney disease (CKD) progression varies considerably between individuals. Identifying these trajectories in sub-Saharan Africa could significantly improve patient management. Objective: To identify CKD progression trajectories and analyze associated factors in a cohort of patients in Burkina Faso. Patients and methods We c(...)
Chronic Kidney Disease, Progression, Serum Creatinine Trajectories, Latent Class Analysis, Burkina Faso, Sub-Saharan Africa
ARTICLE
Environmental Effects on Phytochemical Composition and Larvicidal Activity of Calotropis procera (Aiton) W.T.Aiton Leaf Extracts Against Aedes aegypti
Daisy Damando, Hermine Zime Diawara, Marcel Sawadogo, Boukaré Kabore, Moumouni Koala, Félix Yaméogo, Aboubacar Sombie, Athanase Badolo, Aminata P. Nacoulma, Rasmané Semdé , Félix Kini and B. Gérard Josias Yaméogo
The increasing resistance of mosquito vectors to synthetic insecticides poses a major challenge to vector control and global public health, underscoring the urgent need for sustainable, environmentally safe alternatives. This study evaluated the larvicidal activity of aqueous, ethanolic, methanolic, and hydroethanolic extracts of Calotropis pr(...)
Calotropis procera; Aedes aegypti; larvicidal activity; biopesticides; phytochemical composition; sustainable vector control
ARTICLE
Antibiotic resistance profile and prevalence of methicillin resistant Staphylococcus aureus at the National Agency for Health Safety in Environment, Food, Work and Health Products in Ouagadougou, Burkina Faso
Dissinviel Stéphane KPODA, Abibou SIMPORE, Dinanibe KAMBIRE, Adama Patrice SOUBEIGA, Darlington Chukwuma UGWU, Paulette KARFO, Elie KABRE, Maxime Koiné DRABO
Background: Antibiotic resistance is a growing concern in Burkina Faso, driven by
widespread and inappropriate antimicrobial use. Methicillin-resistant Staphylococcus
aureus (MRSA) poses a particular threat through community-acquired infections, which
remain underreported. This study assessed MRSA prevalence and resistance patterns at(...)
Staphylococcus aureus, methicillin resistance, ANSSEAT, Ouagadougou, Burkina Faso
ARTICLE
Design of a "Mini Smart Grid" for the electrification of Koumnéré locality: Power supply via a hybrid PV/Diesel power plant with battery storage
Dioari Ulrich Combari, Arnaud Ouermi, Wend Yam Mickaïla Tertus Dermé, Mamoudou Saria, Issa Zerbo
This work concerns the design of a small hybrid photovoltaic/diesel generator power plant with battery energy storage. This system will supply electricity to the Koumnéré area, located in the South-Central region of Burkina Faso. Photovoltaic energy is obtained from a free primary energy source: solar energy. However, it is an intermittent ene(...)
PV/Diesel Power Plant, Energy Storage, Sizing, Rural Electrification, Koumnéré Locality
ARTICLE
Knowledge and practices of biosecurity in aquaculture in Loumbila commune: farmers’ perceptions and health management implications, Burkina Faso
Dissinviel Stéphane Kpoda, Adama Patrice Soubeiga, Souhoudou Sawadogo, Cheick Amadou Tidiane Ouattara, Kounbèsiounè Marius Somda
Background
Fish farming was introduced in Burkina Faso in the 1950s to offset
declining capture fisheries and enhance food security. In Loumbila
commune, aquaculture has recently expanded, but its growth is
constrained by aquatic diseases. Biosecurity, essential for preventing
pathogen introduction and spread, remains poorly implement(...)
Aquatic diseases prevention, Aquaculture development, Biosecurity practices, Burkina Faso aquaculture
ARTICLE
“What is the essence of cultivating a crop that does not yield enough to feed my family?” Farmer agency and the management of agrobiodiversity in Ghana and Burkina Faso
Michael Olaitan Ademilola, · Paul Effah,· Viviane Yameogo, · Thomas Daum, · Lilli Scheiterle, · Felix Asante, · Nerbéwendé Sawadogo, · Regina Birner
The preservation of agrobiodiversity is widely regarded as a cornerstone of sustainable agri-food systems, yet dominant narratives often portray crop diversity in smallholder farming as declining under pressures of intensification and market integration. Less attention has been given to how farmers themselves perceive, manage, and actively sha(...)
Agrobiodiversity, · Diversity index, · Crop diversity, · Varietal diversity, · Burkina Faso, · Ghana