Publications (8047)
ARTICLE
Clipping Formulated As an Adding Signal Technique for OFDM Peak Power Reduction
Guel Desire and Palicot Jacques
Due to the simplest way for PAPR reduction, clipping technique have been proposed and seem to be promising for use in commercial systems. In this paper, the conventional clipping technique is formulated as an adding signal technique for PAPR reduction. We show that, when clipping occurs very rarely, the adding signal for PAPR reduction commonl(...)
Peak to Average Power Ratio (PAPR), Nonlinear distortion, Wireless LAN
ARTICLE
Weak solutions for anisotropic nonlinear elliptic equations with variable exponents
B. Koné, S. Ouaro, S. Traoré
We study the anisotropic boundary-value problem
−∑i=1N∂∂xiai(x,∂∂xiu)=fin Ω,u=0on ∂Ω,
where Ω is a smooth bounded domain in ℝN (N≥3). We obtain the existence and uniqueness of a weak energy solution for f∈L∞(Ω), and the existence of weak energy solution for general data f dependent on u.
ev spaces; weak energy solution; variable exponents; electrorheological fluids
ARTICLE
« Littérature et idéologie : déconstruction de l’histoire et préjugés raciaux dans Two Thousand Seasons de Ayi Kwei Armah »
KIEMA, Alfred
Cet article
Littérature, idéologie, déconstruction, préjugés
ARTICLE
« Littérature et idéologie : déconstruction de l’histoire et préjugés raciaux dans Two Thousand Seasons de Ayi Kwei Armah »
KIEMA, Alfred
cet article
Ideologie, déconstruction, préjugés raciaux
ARTICLE
Local existence and regularity of solutions for some partial functional integrodifferential equations with infinite delay in Banach Spaces
Khalil Ezzinbi, Hamidou Toure, Issa Zabsonre
In this work, we study the existence and regularity of solutions for some partial functional integrodifferential equations with infinite delay in Banach spaces. We suppose that the undelayed part admits a resolvent operator in the sense of Grimmer [R. Grimmer, Resolvent operators for integral equations in a Banach space, Transactions of the Am(...)
Mots clés non renseignés
ARTICLE
Les phénomènes de nitration des eaux souterraines dans la région de Tilabéry (Niger)
Marou Gourouza , Garba Zibo , Karifa Bayo
Résumé : Des échantillons d’eaux de consommation provenant de trois cent points d’eau
souterraine repartis sur toute la région de Tillabéry (Niger) ont été analysés. Les résultats
révèlent qu’environ 2/3 de ces points d’eaux connaissent un début de pollution au nitrate ;
10% sont impropres à la consommation humaine avec des teneurs supérieu(...)
Mots clés : eau, pollution, nitrate, potassium
ARTICLE
Woody vegetation structure and composition at four sites along a latitudinal gradient in western Burkina Faso.
Fidèle Bognounou, Adjima Thiombiano, Patrice Savadogo, Joseph Issaka Boussim, Per Christer Odén, Sita Guinko
Understanding the distribution patterns of plant species and the underlying factors is crucial to the conservation and management of plant communities in savannah-woodland
ecosystems. This article describes the species composition, structure and diversity of woody species at four sites along a latitudinal gradient in the North Sahelian, South(...)
Biodiversity, Species richness, Environmental relation, Fragmented landscape, Conservation, Sudanian zone.
ARTICLE
Living at the edge: biogeographic patterns of habitat segregation conform to speciation by niche expansion in Anopheles gambiae
Carlo Costantini , Diego Ayala , Wamdaogo M Guelbeogo , Marco Pombi , Corentin Y Some , Imael HN Bassole , Kenji Ose , Jean- Marie Fotsing , N'Falé Sagnon , Didier Fontenille , Nora J Besansky and Frédéric Simard
Background: Ongoing lineage splitting within the African malaria mosquito Anopheles gambiae is
compatible with ecological speciation, the evolution of reproductive isolation by divergent natural selection acting on two populations exploiting alternative resources. Divergence between two molecular forms (M and S) identified by fixed(...)
Mots clés non renseignés
ARTICLE
Weak and entropy solutions to nonlinear elliptic problems with variable exponent.
S. Ouaro, S. Traoré
The authors study nonlinear boundary value problem with the nonlinear operator of p-Laplacian-type and Dirichlet boundary condition. The authors obtain two existence results: in first a unique entropy solution is obtain and in the second a week solution is produced.
generalized Lebesgue-Sobolev spaces; weak energy solution; entropy solution; p(x)-Laplace operator; electrorheological fluids
ARTICLE
HIV NOTIFICATION TO THE PARTNER AMONG PUERPERAS IN SUB-SAHARAN AFRICA
L. R. Tomasoni, M. Galli, V. Vullo, S. Declich, M. Giuliano, V. Pietra, M. Fabiani, J. Simpore, E. Gianelli, S. Rusconi, A. Riva, G. Guaraldi, K. Luzi, G. Russo, M. Lichtner, F. Castelli
HIV serostatus disclosure to sexual partner may lead to clear public health benefits (motivation for partner testing, behavior changes, earlier access to medical care), but it may also lead to women rejection, loss of economic support, physical and emotional abuse. Studies from developing countries suggest that a larger proportion of women com(...)
HIV disclosure, partner notification, puerperas, Sub‑Saharan Africa, public health, stigma, gender dynamics
ARTICLE
INFANT FEEDING MODALITIES AND MORBIDITY IN HIV INFECTED WOMEN IN RESOURCE-POOR COUNTRIES. A MULTICENTER STUDY IN SUBSAHARAN AFRICA
L. R. Tomasoni, M. Galli, V. Vullo, B. Pedruzzi, V. Pietra, J. Simporé, E. Gianelli, S. Rusconi, A. Riva, Giovanni Guaraldi, K. Luzi, G. Russo, M. Lichtner, G. Carosi, F. Castelli
The optimal feeding modality of infants born to HIV infected mothers in resource-limited settings is still the subject for debate. WHO guidelines recommends exclusive formula feeding wherever it is available, feasible, affordable, safe and sustainable (AFASS). In all other instances, exclusive breastfeeding and early weaning is recommended. Ho(...)
infant feeding, HIV-infected women, resource-poor countries, morbidity, Sub-Saharan Africa, breastfeeding, formula feeding
ARTICLE
Genetic and environmental factors in human osteoporosis from Sub-Saharan to Mediterranean areas
Maria Musumeci, Gianluca Vadalà, Giovanni Tringali, Elio Insirello, Anna Maria Roccazzello, Jacques Simporé, Salvatore Musumeci
The aim of this study was to determine the prevalence of known gene polymorphisms associated with osteoporosis in postmenopausal normal women from Burkina Faso and Sicily, compared to postmenopausal Sicilian women with osteoporosis, and to establish the weight of environmental factors in the mechanism of osteoporosis. Bone mass density (BMD) w(...)
Osteoporosis, Gene polymorphisms, Vitamin D receptor (VDR), Estrogen receptor (ESR), Physical activity, Bone mass density (BMD), Sub-Saharan women, Environmental factors
ARTICLE
Antibiotic resistance in urinary tract bacteria in Ouagadougou
Simplice D. Karou, Idenise P. Ilboudo, Wendyamé M. C. Nadembega, Yaovi Ameyapoh, Djeneba Ouermi, Salvatore Pignatelli, Virginio Pietra, Alfred S. Traoré, Comlan de Souza, Jacques Simporé Demander à ChatGPT
The present study aimed to ascertain for the current situation of antimicrobial resistance of major urinary tract bacteria in Saint Camille Medical Centre. During two consecutive years, 794 urine specimens were analyzed for microorganism isolation and identification. The microorganisms were identified by conventional methods used in the centre(...)
Urinary tract, Antibiotic resistance, Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae
ARTICLE
Outcome and predictive factors of mortality in hospitalized HIV-patients in Burkina Faso
N. Saleri, S. Capone, V. Pietra, G. De Iaco, V. Del Punta, M. Rizzi, M. Levi, S. Rouamba, E. Somé, J. Simporé, A. Patroni, G. Carosi, F. Castelli
Background: The aim of this study was to describe the clinical presentation and predictors of death in a HIV population hospitalized in Ouagadougou, Burkina Faso.
Materials and methods: Baseline demographics, viro-immunological status, clinical presentations, and outcome have been analyzed by univariate analysis and a multivariate model.(...)
HIV, mortality, predictive factors, hospitalized patients, Burkina Faso
ARTICLE
Toward a Better Representation of Women in Physics in Burkina Faso
P. Kafando, M.N.Sido-Pabyam, and I. Zerbo
Although 52% of Burkina Faso's population is women, boys receive preference in schooling. In 2006, only about 10% of the secondary school pupils were girls. At the University of Ouagadougou in 2000-2005 one quarter of the students were women, but just 5% of students in the sciences were women. This rate is dramatically lower in physics, both f(...)
women in science, Burkina Faso, education of girls in Burkina Faso