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Search Results: 1 - 10 of 113 matches for " Seydou Harouna Fatouma "
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Prosumption and Web 2.0 Challenges Faced by African Countries Users  [PDF]
Seydou Harouna Fatouma, Shen Lei, Hamadou Tahirou Abdoulkarim
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.47020
Abstract: In recent years worldwide boundaries have been redefined, thanks to internet and technologies which facilitate increasingly the interaction between virtual friends and socials networking users. Consumers as well as producers in both developed and developing countries share information, pictures and videos via the Web 2.0 tools available on electronic devices and Internet websites. However due to several obstacles, activities such as co-creations, digital collaboration and others socials networking can be limited for some users. Thus this article discussed various factors that limit developing countries’ prosumers interactivity in the age of Web 2.0 technology. The factors influencing numbers of users’ collaboration can be individual, organizational, technological and/ or environmental factors.
Dry Ports in China and West Africa: A Comparative Study  [PDF]
Hamadou Tahirou Abdoulkarim, Seydou Harouna Fatouma, Elijah Musango Munyao
American Journal of Industrial and Business Management (AJIBM) , 2019, DOI: 10.4236/ajibm.2019.93030
Abstract:
The dry port concept was first adopted in Europe and North America, followed by Asia, South America and then Africa. Since then, the development of inland cargo distribution facilities has been an active approach to support the hinterlands of maritime gateways among other functions. Dry ports can be developed in the hinterland based on different approaches, involving differing functions, actors, motivations and logistical models. They can be classified as close, mid-range or distant, with respect to the seaport. Dry port development can be carried out by port authorities, port terminal operators and transport providers such as third-party logistics providers or rail operators or by public bodies: local, national or regional. One of the design strategies for these facilities is rail-based which promotes economies of scale on high capacities and long distance links. The other strategy is the road-based short-distance satellite terminals aimed at decongesting the port or facilitating faster custom clearances. This paper carries out a comparative analysis of dry ports in China and the West African countries using a descriptive approach and providing case studies for each parameter used in the comparative study. This study is based on motivations for dry port development in these regions, as well as the development and management models applied in the dry port sector. In addition, a discussion on the merits and demerits of the management and development models applied on dry ports in these regions are also included in this study, from which conclusions and recommendations are drawn to support policy formulation and future studies. This paper not only serves to contribute to the existing academic knowledge on dry ports, but also provides the policy makers and practitioners in the logistics and trade sectors with an invaluable opportunity to compare the practices in the two regions for application to appropriate scenarios.
The Selection of Dry Port Location by Analytic Network Process Model: A Case Study of Dosso-Niger  [PDF]
Hamadou Tahirou Abdoulkarim, Seydou Harouna Fatouma, Bomboma Kalgora
Journal of Transportation Technologies (JTTs) , 2019, DOI: 10.4236/jtts.2019.92009
Abstract: The aim of this paper is to select the best location for the construction of a dry port in Niger which is a land locked country (LLC). Niger is located in the Sahel and has a land area of 1,267,000 square kilometers [1], with the closest port being port of Cotonou in Benin. The transport corridor from Niamey to Cotonou is approximately 1036 km long [2]. It is estimated that this corridor carries about 40 percent of Niger’s overseas trade traffic [3]. In this work, the Analytic Network Process (ANP) model is used to determine the optimal location of the dry port, among three major cities: Niamey (capital city), Dosso and Gaya. From the application of this selection model, Dosso was selected as the best location for the location of the dry port, while Gaya and Niamey were placed second and third respectively. The results obtained in this work strongly confirm the decision of the government of Niger to construct a dry port in Dosso, a project that commenced in 2010 and is still in progress.
Assessment of Dry Port Efficiency in Africa Using Data Envelopment Analysis  [PDF]
Hamadou Tahirou Abdoulkarim, Seydou Harouna Fatouma, Hamadou Tahirou Hassane
Journal of Transportation Technologies (JTTs) , 2019, DOI: 10.4236/jtts.2019.92012
Abstract: This work involves the evaluation of dry port competitiveness through analysis of efficiencies for selected dry ports in Africa. Five dry ports were selected and analysis carried out over a period of four years. The dry ports considered were Mojo and Kality in Ethiopia, Mombasa in Kenya, Isaka in Tanzania and Casablanca in Casablanca, Morocco. Data Envelopment Analysis (DEA) was applied for this work. Container throughputs for the various ports under consideration were used as the output variable for the data analysis model, while the number of reach stackers, the number of tractors, the number of forklifts and the size of the dry port were used as the input variables. From the results, the Mombasa dry port was found to be the most efficient with an average score of approximately 1 over the period under consideration. Casablanca was the second efficient dry port with an average score of 0.762, while Isaka was the least efficient with an average score of 0.142. This research is significant since the African countries have embraced the dry port concept, as witnessed in the huge investments in this sector, and would serve to highlight areas that need improvement for the few existing dry port facilities, most of which are undergoing expansion as well as modernization.
Modeling of unsteady MHD free convection flow with radiative heat transfer in a rotating fluid  [PDF]
Harouna Naroua
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.212169
Abstract: In this paper, a numerical simulation has been carried out on unsteady hydromagnetic free convection near a moving infinite flat plate in a rotating medium. The temperatures involved are assumed to be very high so that the radiative heat transfer is significant, which renders the problem highly non-linear even with the assumption of a differential approximation for the radiative heat flux. A numerical method based on the Nakamura scheme has been employed to obtain the temperature and velocity distributions which are depicted graphically. The effects of the different parameters entering into the problem have been discussed extensively.
A Computational Solution of Natural Convection Flow in a Rotating Fluid with Radiative Heat Transfer  [PDF]
Harouna Naroua
American Journal of Computational Mathematics (AJCM) , 2016, DOI: 10.4236/ajcm.2016.62012
Abstract: An analysis of the hydromagnetic free convective flow past a vertical infinite porous plate in a rotating fluid is carried out. The temperatures involved are assumed to be very large so that the radiative heat transfer is significant, which renders the problem very non-linear even on the assumption of a differential approximation for the radiative flux. The temperature and velocity fields are computed using a generic software tool based on the Nakamura finite difference scheme. The genericity of the software tool is in the sense that it is a common solution to the category of time dependent laminar fluid flows expressed in one spatial coordinate. The input equations, together with other relevant parameters, are transformed into postfix code which will be farther interpreted in the computation process. The influence of the various parameters entering into the problem is shown graphically followed by a discussion of results.
Blows and Voluntary Wounds of the Emergency Unite in Gabriel Toure Teaching Hospital in Bamako  [PDF]
Mangané Moustapha, Diop Thierno Madane, Almeimoune Abdoul Hamidou, Keita Soumaila, Dembelé Aladji Seydou, Youssouf Sogoba, Konaté Madiassa, Koita Siriman, Traoré Amadou, Issa Amadou, Badimi Siaka, Abdoulaye Kanté, Diallo Sadio, Sangaré Harouna, Dembelé Bakary Tientigui, Togo Adegné, Diango Djibo Mahamane
Surgical Science (SS) , 2018, DOI: 10.4236/ss.2018.99040
Abstract: Introduction: Voluntary assault and injuries are acts that damage the physical and psychological integrity of a human being. WHO in its global report on violence and health estimates that in 2000, 1.6 million people worldwide died as a result of self-harm, interpersonal or collective violence, resulting in an overall rate adjusted by age of 28.8 per 100,000 population. Because of the seriousness of this phenomenon and the heavy socio-economic and health consequences that they generate, it seemed important to us to undertake this study, which aimed to study the deliberate injuries in the emergency unite of the Gabriel Touré Teaching Hospital in Bamako. Material and methods: This was a descriptive and cross-sectional study with a prospective study from September 1st, 2016 to August 31st, 12 months, covering 295 patients, including any patient received for voluntary injury consultation with a workable medical record and/or a full investigation record with or without requisition. Our data were collected on individual survey cards and subsequently analyzed with Word, Excel, IBM SPSS Statistics 22 software. Results: The majority of victims of assault and bodily injury were male with 83.1%; with a sex ratio of 4.9, the 18 to 28 age group was the most concerned with 163 cases of the 295 cases in our study, 55.2%. The extremes were 6 and 100 years old with an ectype at 11.08. The most affected ethnic group was Bambara with 38.6% (n = 114) followed by Fulani with 15.6% (n = 46). Students were the most affected at 24.7% (n = 73), followed by traders at 10%. The victims coming from outside Bamako are the most predominant with 22.4% (n = 66) followed by those of commune IV of Bamako 15.6% (n = 46). In 92.2% of the cases the mechanism was direct with n = 272. Of the lesions recorded in our study, wounds came first with 53.2% of cases. Radiography was the most used imaging at 44.7% (n = 89) followed by computed tomography at 34.7% (n = 69). The hemoperitoneum objectified by abdominal ultrasound represented 29.3% (n = 12). Fractures embarrure associated with bruising-hemorrhagic bruises were the most predominant with 13.4% (n = 10) objectified by brain scan. Conclusion: We note that the phenomenon of violence has reached worrying proportions, especially among young adults, particularly among students and is observed in all so-cio-professional layers. The polymorphism of these injuries caused by the predominant use of knives must draw the attention of our authorities to take measures to reduce these
A Generic Computational Solution of a Natural Convection Flow past an Infinite Vertical Porous Plate  [PDF]
Harouna Naroua, Moussa Idi Bachir
American Journal of Computational Mathematics (AJCM) , 2016, DOI: 10.4236/ajcm.2016.64030
Abstract: A simulation was carried out on an unsteady flow of a viscous, incompressible and electrically conducting fluid past an infinite vertical porous plate. A generic computer program using the Galerkin finite element method is employed to solve the coupled non-linear differential equations for velocity and temperature fields. The diffusion equation, the energy equation, the momentum equations and other relevant parameters are transformed into interpretable postfix codes. Numerical calculations are carried out on the flow fields both in the presence of cooling and heating of the plate by free convection currents. The effects of the dimensionless parameters, namely, the Prandtl number, the Eckert number, the modified Grashof number, the Schmidt number and the time on the temperature and velocity distributions are discussed.
Performance Appraisal in the Public Sector in Niger
Harouna Saibou
International Journal of Business and Management , 2011, DOI: 10.5539/ijbm.v6n6p263
Abstract: This paper examines the impact of performance appraisal in the public sector in Niger. Few administrative functions have attracted more attention on this and successfully resisted solution than employee evaluation. Since performance appraisal wasn’t possible, then the personnel appraisal will be applied. When such hypocrisy occurs, civil service systems predicated on merit are undermined. The appraisal methodology applicable in the public sector in Niger is outdated and does not meet any criteria of objectivity, particularly measures its level of objectivity in the public sector in Niger.
Geochemistry of Sandstone Type Uranium Deposit in Tarat Formation from Tim-Mersoi Basin in Northern Niger (West Africa): Implication on Provenance, Paleo-Redox and Tectonic Setting  [PDF]
Abdou Dodo Bohari, Moussa Harouna, Ali Mosaad
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.68014
Abstract: The study aimed at investigating the geochemistry of a sandstone-type uranium deposit in Tarat formation for provenance, paleo-redox, tectonic setting in order to propose a geological model of uranium. X-Ray Fluorescence (XRF) and Induced Coupled Plasma Mass Spectrometry (ICP-MS) analyses were used to determine the sandstone composition. Major, trace and rare earth element compositions of the sandstones have been investigated to determine their provenance, tectonic setting and the influence of weathering conditions. Field studies of Tarat formation revealed that a major accident N30° that can be interpreted as an extension of the Austriche accident ensures the controls of Tarat sedimentation and mineralization deposits and the presence oxidized zone and reduced zone indicate the direction of circulation of the mineralized fluids from West to East. The uranium mineralization is disseminated as pitchblende that gives a yellow color to the sandstone while, molybdenum mineralization gives a blue color to the sandstone. Results of the Geochemical analysis indicate that the sandstone-type uranium deposit of Taratis classified into Protoquarzite (i.e. lithearenite and sublitharenite), arkose, subarkose, wacke and quartz arenite and varied in their maturity. Their Rare Earth Elements (REE) pattern displays high light REE over heavy REE, flat HREE and a significant negative Eu and Ce anomalies and in general correlated well with the NASC and PAAS average composition. The source area may have contained quartzose sedimentary rocks. The geochemical data support deposition in reducing environment of arid to humid climatic conditions rich in organic matter affected by passive margin (PM) tectonic setting and the sediments are derived from felsic and mafic source rocks. Trace and REE data as well as the high values of the weathering indices: Chemical Index of Alteration (CIA), Plagioclase Index of Alteration (PIA) and Chemical Index of Weathering (CIW) suggest intermediate to extreme weathering conditions in the source area or during transportation. The studied sandstones are inferred as highly mature sediments evidenced from their high SiO2/Al2O3 > 1 and the presence of the ultra-stable clay minerals, smectite, kaolinite, chlorite and illite. Also the Th/U < 3 ratio suggests high uranium enrichment of Tarat sandstones over crust average composition. From the factor analysis of the analyzed sandstone, there is no direct relationship between organic carbon and uranium, indicating the absence of organo-uraniferous composite
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