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Search Results: 1 - 10 of 2081 matches for " Abdoul Aziz Diakite "
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Complications of Sinusitis: About 9 Cases in the Ear Nose & Throat (ENT) Department of the University Hospital Gabriel Touré in Bamako  [PDF]
Kadidiatou Doumbia-Singare, Abdoul Aziz Diakite, Sidiki N’Dao, Samba Karim Timbo, Youssouf Sogoba, Drissa Kanikomo, Boubacary Guindo, Siaka Soumaoro, Lamine Traore, Fatogoma Kone, Fatou Sylla, Mohamed Keita, Alhousseini Ag Mohamed
Surgical Science (SS) , 2016, DOI: 10.4236/ss.2016.71003
Abstract: Objective: This study aims to analyze clinical, paraclinical and therapeutic aspects of sinusitis complications in the Otorhinolaryngology department at the teaching hospital of Gabriel Toure in Bamako. Materials and methods: This descriptive and longitudinal study was conducted on 12 months from March 2012 to February 2013 in 9 cases of sinusitis complications in the department of Otorhinolaryngology at the University Hospital Gabriel Toure in Bamako. Results: The average age of patients was 22.7 years; a median of 19 years within 6 men and 3 women with almost 12.9 days of care seeking duration. The factors of risky were the use of nonsteroid anti-inflammatory drugs NSAID (4 cases), maxillofacial trauma (1 case) and HIV (1 case). Facial pain was the major symptom, such as frontal oedema, rhinorrhea with pus shedding and nasal obstruction. Computer tomography was used for complications specification. Frontal sinusitis was the most encountered with subperiosteal abscess (44.4%). Streptococcus pneumoniae was identified in 3 cases. Medical treatment associated to surgery was conducted on 7 patients. Two cases of death have been registered. Conclusion: The complicated sinusitis is an emergency and dangerous disease requiring specific care by a multidisciplinary staff. Much of complications are commonly encountered despite the antibiotic era.
Overview of Ductal Carcinoma in Situ of the Breast  [PDF]
Papa Macoumba Gaye, Abdoul Aziz Kassé
Journal of Cancer Therapy (JCT) , 2014, DOI: 10.4236/jct.2014.52028

We review relevant publications on ductal carcinoma in situ of the breast in the past three years and we discuss pattern of outcome lightened by new molecular approach and techniques of radiotherapy.

Yan’an Mobile Game Player’s Consumption Concept of Donghua University Campus  [PDF]
Boubacar Gamatche Abdoul Aziz, Shen Lei
Journal of Service Science and Management (JSSM) , 2016, DOI: 10.4236/jssm.2016.93035
Abstract: This article proposes the design and the results of a project studying the adoption of mobile gaming (playing mobile games) in the Chinese youth market. An adoption model extending TAM (Technology Adoption Model) was used, with intention to use as the dependent variable. Data were gathered from a sample group consisting of university students both Chinese and Foreigners. It was found that adopters of mobile gaming were likely to be male as well as female, and also that the group surveyed exhibited a behavior towards relatively high spending on mobile entertainment (in proportion to income). The key factors affecting mobile gaming adoption in portion China were Perceived Ease of Use, Perceived Enjoyment, Social Influence and Flow. Perceived expressiveness, economic cost was found to be the most significant influential factor affecting intention to use, while perceived enjoyment was found to be motivated by perceived ease of use. Recommendations regarding developing and offering mobile games are also included.
Two-sources Randomness Extractors for Elliptic Curves
Abdoul Aziz Ciss
Computer Science , 2014,
Abstract: This paper studies the task of two-sources randomness extractors for elliptic curves defined over finite fields $K$, where $K$ can be a prime or a binary field. In fact, we introduce new constructions of functions over elliptic curves which take in input two random points from two differents subgroups. In other words, for a ginven elliptic curve $E$ defined over a finite field $\mathbb{F}_q$ and two random points $P \in \mathcal{P}$ and $Q\in \mathcal{Q}$, where $\mathcal{P}$ and $\mathcal{Q}$ are two subgroups of $E(\mathbb{F}_q)$, our function extracts the least significant bits of the abscissa of the point $P\oplus Q$ when $q$ is a large prime, and the $k$-first $\mathbb{F}_p$ coefficients of the asbcissa of the point $P\oplus Q$ when $q = p^n$, where $p$ is a prime greater than $5$. We show that the extracted bits are close to uniform. Our construction extends some interesting randomness extractors for elliptic curves, namely those defined in \cite{op} and \cite{ciss1,ciss2}, when $\mathcal{P} = \mathcal{Q}$. The proposed constructions can be used in any cryptographic schemes which require extraction of random bits from two sources over elliptic curves, namely in key exchange protole, design of strong pseudo-random number generators, etc.
Bayesian Estimation of Shrubs Diversity in Rangelands under Two Management Systems in Northern Syria  [PDF]
Abdoul Aziz Niane, Murari Singh, Paul C. Struik
Open Journal of Ecology (OJE) , 2014, DOI: 10.4236/oje.2014.44017

The diversity of shrubs in rangelands of northern Syria is affected by the grazing management systems restricted by the increase in human and livestock populations. To describe and estimate diversity and compare the rangeland grazing management treatments, two popular indices for diversity, the Shannon index and the Simpson index, were studied for the four combinations of two sites, Hammam and Obeisan, and two grazing methods, Closed and Open, using frequentist and Bayesian approaches. We simulated the a priori and a-posteriori distributions of the Shannon and Simpson diversity indices, where from a range of values for a constant in the a priori distribution the best value normalizing the distribution of the diversity indices was chosen. The Bayesian diversity estimates were higher than their frequentist counterparts and had lower standard errors. The grazing methods at each site and sites under each grazing method delivered significant diversity of shrub species. The Bayesian estimates resulted in lower p-values than the frequentist approach for two cases reflecting in Bayesian methods higher power. Bayesian approach is recommended as it has a wider framework for inference on diversity studies.

Global Harmonic Rate Assessment in the Electricity Distribution Network in Niamey City: Case Studies of Domestic, Industrial and Hospital Substations  [PDF]
Abdourahimoun Daouda, Sa?dou Madougou, Abdoul Aziz Ibrahim
Energy and Power Engineering (EPE) , 2017, DOI: 10.4236/epe.2017.912049
Abstract: Like others countries of the world, in Niger also, we are witnessing an increasing use of non-linear electric loads in the domestic, hospital and industrial sectors. However, these loads degrade the shape of the electrical signal and cause disastrous effects to the equipment of the distribution system and the devices which are connected to the network. This article highlights the presence of electric harmonics in the distribution network in Niamey city. In order to do this, measurements were taken at the secondary level of the substations using an energy quality analyze r (FLUKE 1735). By using this measuring instrument, we quantified the voltage and current Total Harmonic Distortion (THD) in the three substations. The results obtained show that, although the statutable rates set by the standards are not exceeded for phase conductors, the neutral contains a very critical percentage of distortion on the residential and hospital substations. Moreover, this assessment made it possible to observe the variation of harmonics in the presence of voltage drops.
Performance Analysis of a Boost Converter with Components Losses  [PDF]
Prince Abdoul Aziz Honadia, Fabé Idrissa Barro, Moustapha Sané
Energy and Power Engineering (EPE) , 2018, DOI: 10.4236/epe.2018.109025
Abstract: A theoretical study of a conventional boost converter is presented. Based on the real behavior of the components, two models of the boost converter are introduced: one dealing only with losses through inductor and capacitor and another taking into account switching losses in addition to resistive ones. From these two models, the detailed analytical expressions of both voltage gain factor and conversion efficiency are established taking into account the losses through parasitic resistances and switching losses. The behavior of the converter is then analyzed for each model by simulation for the voltage gain factor and the conversion efficiency.
Two favourite themes in Nigérien literature
Abdoul-Aziz Issa Daouda
Tydskrif vir letterkunde , 2005,
Abstract: Critics tend to generalise in their analysis of African literature by presenting it from two main angles: anti-colonial literature and the literature of disenchantment focused on a criticism of the political regimes that came out of independence. However, not only did Nigérien literature emerge after independence, but writers from Niger tend to emphasise certain themes addressing practical concerns that are specific to their community; they do not focus on political satire per se. Hence, Niger's novelists pay attention to essential themes like drought and famine, rural exodus and emigration. Such themes, while constituting the originality of their writing, unfortunately also preclude the usual generalisations of which critics are so enamoured.
Pairings on Generalized Huff Curves
Abdoul Aziz Ciss,Djiby Sow
Computer Science , 2012,
Abstract: This paper presents the Tate pairing computation on generalized Huff curves proposed by Wu and Feng. In fact, we extend the results of the Tate pairing computation on the standard Huff elliptic curves done previously by Joye, Tibouchi and Vergnaud. We show that the addition step of the Miller loop can be performed in $1\mathbf{M}+(k+15)\mathbf{m}+2\mathbf{c}$ and the doubling one in $1\mathbf{M} + 1\mathbf{S} + (k + 12) \mathbf{m} + 5\mathbf{s} + 2\mathbf{c}$ on the generalized Huff curve.
Mobile and Context-Aware GeoBI Applications: A Multilevel Model for Structuring and Sharing of Contextual Information  [PDF]
Belko Abdoul Aziz Diallo, Thierry Badard, Frédéric Hubert, Sylvie Daniel
Journal of Geographic Information System (JGIS) , 2012, DOI: 10.4236/jgis.2012.45048
Abstract: With the requirements for high performance results in the today’s mobile, global, highly competitive, and technology-based business world, business professionals have to get supported by convenient mobile decision support systems (DSS). To give an improved support to mobile business professionals, it is necessary to go further than just allowing a simple remote access to a Business Intelligence platform. In this paper, the need for actual context-aware mobile Geospatial Business Intelligence (GeoBI) systems that can help capture, filter, organize and structure the user mobile context is exposed and justified. Furthermore, since capturing, structuring, and modeling mobile contextual information is still a research issue, a wide inventory of existing research work on context and mobile context is provided. Then, step by step, we methodologically identify relevant contextual information to capture for mobility purposes as well as for BI needs, organize them into context-dimensions, and build a hierarchical mobile GeoBI context model which (1) is geo-spatial-extended, (2) fits with human perception of mobility, (3) takes into account the local context interactions and information-sharing with remote contexts, and (4) matches with the usual hierarchical aggregated structure of BI data.
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