Publications (10724)
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
À l’intersection du veuvage et de la retraite : l’émergence du vide social à Ouagadougou, Burkina Faso
Yisso Fidèle Bacyé; George Rouamba; Moubassiré Sigué
Cet article analyse les formes de solitudes des personnes qui se trouvent à l’intersection de la retraite et du veuvage dans la ville de Ouagadougou. Si la personne était jusqu’alors dépositaire d’un capital social constitué de la parentèle et des collègues, la retraite et le veuvage marquent une désagrégation de ce capital, par l’étiolement d(...)
retraite, veuvage vide social, solitude, Ouagadougou
ARTICLE
Pig Farming Systems and Pathways to Agroecological Intensification in Burkina Faso, West Africa
Dominique OUEDRAOGO, Sidnoma Abdoul Aziz TRAORE, Ramsès Eden Kuassi Monkotan, Bendi Tandamba, Luc Hippolyte Dossa
This study analyzed the diversity of management of pig farming systems in Burkina Faso and their possible implications for agroecological intensification. Data were collected from 387 pig farmers in rural and peri-urban areas across two major agroecological zones using a semi-structured questionnaire. Farmers' socio-economic characteristics an(...)
agroecology, farming, Intensification, sub-Saharan Africa, Sus scrofa domesticus
ARTICLE
Tumeurs bénignes du duodénum : à propos de deux cas et revue de la littérature
Sanon Aimée. Florence¹, Bara Daouda¹, Ido Franck.Auguste. Hermann.Adémayali², Bahikoro Issa.Windpouiré¹, Doamba Rodrigue¹, Windsouri Mamadou¹, Yaméogo Laure. Clarisse¹, Bagré Carine¹, Sanou Adama¹
Introduction : Les tumeurs duodénales sont des entités
rares, caractérisées par une grande hétérogénéité
histologique. Parmi les formes bénignes, les adénomes
constituent les lésions les plus fréquemment rencontrées,
tandis que les glomangiomes duodénaux représentent des
tumeurs mésenchymateuses exceptionnelles. Bien que
souvent as(...)
Adénome ; bénignes ; duodénum ; Glomangiome ; Tumeurs
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
Characterization of a Clay Raw Material from Oualle: Uses in Ceramics
Bobet Ouanmini, Ganon François, Bamogo Halidou, Seynou Mohamed, Gilles Escadeillas, Zerbo Lamine, Gilles Escadeillas
This paper evaluates Ouallé clay for ceramic applications using geotechnical, chemical, mineralogical, thermal, and firing-based characterization methods. The study finds that the clay is mainly kaolinite-rich, moderately plastic, and potentially suitable as a base material for faience and fired clay products. The fired specimens show acceptab(...)
Clay, Ceramics, Tiles
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
Agromorphological Characterization and Agronomic Assessment of Corchorus aestuans L.: A Traditional Leafy Vegetable from Burkina Faso
Sawadogo Zakaridja , Kiebre Mariam , Nikiéma Domonique , Sakande Boureima and Bationo-Kando Pauline
This study presents an agromorphological characterisation of 20 accessions of Corchorus aestuans L. from four provinces in Burkina Faso. The objective was to contribute to a better understanding of the agromorphological diversity of Corchorus aestuans L. in Burkina Faso. To this end, 26 traits, including 14 qualitative and 12 quantitative ones(...)
Corchorus aestuans; accession-environment interaction; morphotype; agronomic performance; Burkina Faso.
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
Influence de l'externalisation des activités comptables sur la performance globale des petites et moyennes entreprises burkinabè
KINDO Hamidou et BATIONO Robert
Le recours à l’externalisation des activités comptables apparaît de plus en plus comme un mode de gestion courant au sein des organisations. Le présent article vise à étudier l’influence des activités comptables externalisées sur la performance globale des PME burkinabè qui ont recours à l’externalisation de leur fonction comptable. Ce faisant(...)
Externalisation ; Activités comptables externalisées ; Performance globale ; PME.
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
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
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
Synthesis and structural characterisation of 6-hydroxycoumarin derivatives
Youssoufou BAKOUAN, Siaka SOSSO, Jules YODA, Wend-Kuny Guy Aristide NITIEMA, Lassané TARPAGA, Bintou SESSOUMA and Karifa BAYO
This work involved the synthesis and structural characterisation of two O-acylated derivatives of 6-hydroxycoumarin (6-coumarinyl 4-chlorobenzoate and 6-coumarinyl 4-tert-butylbenzoate). The structure of the synthesised product was confirmed by various spectroscopic techniques, notably infrared (IR) spectroscopy, proton (¹H) nuclear magnetic r(...)
6-hydroxycoumarin, O-acylation, 6-coumarinyl benzoate.