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Search Results: 1 - 10 of 157 matches for " Oumarou SIE "
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Comparative Study of the Parallelization of the Smith-Waterman Algorithm on OpenMP and Cuda C  [PDF]
Amadou Chaibou, Oumarou Sie
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.36011
Abstract: In this paper, we present parallel programming approaches to calculate the values of the cells in matrix’s scoring used in the Smith-Waterman’s algorithm for sequence alignment. This algorithm, well known in bioinformatics for its applications, is unfortunately time-consuming on a serial computer. We use formulation based on anti-diagonals structure of data. This representation focuses on parallelizable parts of the algorithm without changing the initial formulation of the algorithm. Approaching data in that way give us a formulation more flexible. To examine this approach, we encode it in OpenMP and Cuda C. The performance obtained shows the interest of our paper.
Improving Global Performance on GPU for Algorithms with Main Loop Containing a Reduction Operation: Case of Dijkstra’s Algorithm  [PDF]
Amadou Chaibou, Oumarou Sie
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.38005
Abstract: In this paper, we study the impact of copying data in GPU computing. GPU computing allows implementing parallel computations at low cost: a GPU can be purchased at under USD 500. Many studies have shown that GPU can be used to speed up the calculations. But for algorithms requiring doing a part of the calculations on GPU and another part on CPU, alternately, latency due to the copy of the data is a performance degradation factor. To illustrate this, we consider the Dijkstra’s algorithm on the shortest path used in solving optimization problems. This algorithm is very heavy to run on sequential machine. So, we are considering a parallel approach on GPU. Note that Dijkstra’s algorithm has been subject of many implementations on GPU. In the present work, we use two platforms with external GPU. Graphs are represented in adjacency matrix. During the computation of this algorithm, intermediates results are copied from GPU to CPU or from CPU to GPU. The purpose of this work is to measure the impact of these copies in the overall performance of the algorithm. For that we calculate time due to the copying data’s implementation; then we compare results with implementation computing only on CPU memory (zero-copy). The real impact shown by experiments demonstrates the interest of this study. GP-GPU programmers have to think that they will use either memory zero-copy or GPU memory. The challenge for GPU’s manufacturers is how to reduce this impact.
Extended Standard Hough Transform for Analytical Line Recognition
Abdoulaye SERE,Oumarou SIE,Eric ANDRES
International Journal of Advanced Computer Sciences and Applications , 2013,
Abstract: This paper presents a new method which extends the Standard Hough Transform for the recognition of naive or standard line in a noisy picture. The proposed idea conserves the power of the Standard Hough Transform particularly a limited size of the parameter space and the recognition of vertical lines. The dual of a segment, and the dual of a pixel have been proposed to lead to a new definition of the preimage. Many alternatives of approximation could be established for the sinusoid curves of the dual of a pixel to get new algorithms of line recognition.
Spatial Effect of Political Risk on Economic Growth in Africa  [PDF]
Oumarou Zallé
Modern Economy (ME) , 2017, DOI: 10.4236/me.2017.812093
Abstract: The purpose of this article is to highlight and quantify the spatial effects of political risk on economic growth among African countries. We design a spatial model of growth derived from the Mankiw-Romer-Weil model by introducing spatial interactions. Spatial spillover effects occur because political risk incurred by a country influences not only the country’s economic growth, but also the economic growth of other geographically close countries through a spatial multiplier effect. The econometric estimates concern a sample of 34 African countries from 1985 to 2015. Results show that the economic performance of African countries is negatively interdependent, and the spatial interdependence passes through political risk. It is indicated that natural resources and religious tensions have direct negative effects on growth. On the other hand, democracy and governmental stability have positive direct effects on economic growth but impede the economic development of neighboring countries. However, external conflicts are not necessarily harmful to neighboring countries. These dynamics illustrate the complexity of conflicts and political instability in Africa.
An Exploration of Hausa Verbal Art Forms in Shaihu Umar: A Hausa Novel  [PDF]
Chaibou Elhadji Oumarou
Advances in Literary Study (ALS) , 2015, DOI: 10.4236/als.2015.31004
Abstract:
This paper explores the Hausa verbal art forms in Shaihu Umar, a novel first published in the Hausa language and then translated into English. The paper mostly focuses on the author’s use of the structures of a Hausa initiation tale as a vehicle for the narrative in the novel. In other words, the paper attempts to investigate how the author uses the structures of Hausa tales for stylistic effects. As a result, the paper tries to identify and analyze what the novel owes to the indigenous Hausa literary tradition as an illustration of the interface between orality and literacy.
An Exploration of the Canon of Hausa Prose Fiction in Hausa Language and Translation: The Literary Contest of 1933 as a Historical Reference  [PDF]
Chaibou Elhadji Oumarou
Advances in Literary Study (ALS) , 2017, DOI: 10.4236/als.2017.51001
Abstract: The paper premises that the literary contest of 1933 has been a very important historical reference and a determining condition for the emergence of the canon of Hausa prose fiction (Furniss, 1991, 1996). As a consequence, my exploration is going to be directed first toward the role of the British colonial administration as the organizer of the literary contest and then toward the role played by the university critics in transforming the winning essays into a corpus of literary masterpieces, thus creating some of the conditions for the emergence and consolidation of the canon of the Hausa prose fiction in both the Hausa language and in translation into English.
Kirari as Autobiography in Hausa Praise Poetry  [PDF]
Chaibou Elhadji Oumarou
Advances in Literary Study (ALS) , 2018, DOI: 10.4236/als.2018.63010
Abstract: This study shows that autobiography exists in oral civilizations by exploring Kirari in Hausa praise poetry. The study focuses on the forms of Kirari that clearly bring out the autobiographical elements that illustrate the autobiographer’s conscious awareness of the singularity of his or her life and achievements and the uniqueness of their identity among the members of their community and/or profession. These forms of Kirari are identified in excerpts from Hausa hunters’ heroic self-praise and from Bakandamiya by the singer Maman Shata Katsina.
On the materials issues for pefc applications
Savadogo Oumarou
Hemijska Industrija , 2004, DOI: 10.2298/hemind0406286s
Abstract: Current limitations related to the development of effective, durable and reliable MEA components for PEFC applications are addressed. Advancements made in the development of materials (catalysts, high temperature membranes, bipolar plates, etc.) for PEFC are shown. The effect of the catalyst on PEFC performances based on cells fed by hydrogen, direct methanol, direct propane, or direct acetal fuels are presented. The progress in cell performance and cathode research are discussed. Perspectives related to CO tolerance anodes are indicated. The effect of the membranes on the cell performance are shown and parameters which may help the development of appropriate membranes depending on the fuel are suggested. Openings for the future in materials processing and development for PEFC mass production are discussed. The development of New Materials is the key factor to meet those requirements. The aim of this paper is to present challenges related to the development of new materials for PEFC applications and perspectives related to components cost issues are discussed.
Personal- and environmental hygiene in Norwegian nursing homes
Ingrid Sie
Journal of Nursing Education and Practice , 2012, DOI: 10.5430/jnep.v2n1p71
Abstract: The prevalence of nosocomial infection in Norwegian nursing homes is still high (ca 7%) and MRSA-problems are increasing in nursing homes. Environmental hygiene and hygienic use of uniforms may play an important role concerning transmission of nosocomial infections. Most nursing homes in Oslo have written routines for floor cleaning and for the use of uniforms. However, while the procedures of uniform use and washing was followed by all staff, only 50% of the institutions seemed to implement in practice the written routines for environmental cleaning. The lack of dayly cleaning in nursing homes may be associated with an increased risk of nosocomial infections.
Symbols of leadership and conceptions of power in Hausa literature: an intertextual reading of a Dodo folktale and a popular song
Chaibou E Oumarou
Tydskrif vir letterkunde , 2005,
Abstract: This article presents a brief exploration of the interface between the collective or ancestral archetype of the “Dodo”, symbolising destructive power in Hausa tales and the more individual interpretation and stylistic concerns of a contemporary popular singer, Ali Na Maliki, addressing, at another level, the subject of power and leadership portrayed by the traditional chief. The paper will focus on the interaction between genres, seen in the light of intertextuality as defined by Michael Riffaterre and M.H. Abrams among others. It highlights, moreover, the thematic and aesthetic contribution of the oral artist Ali Na Maliki to contemporary Hausa orature and culture. It reposes on an analysis of the manipulation of certain images and animal symbols of leadership and power borrowed from the world of tales used with a certain degree of innovation in order to evoke, symbolically, the mythical attributes of power in the artistic universe of his songs.
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