International University of Grand Bassam

Grand-Bassam, Ivory Coast

International University of Grand Bassam

Grand-Bassam, Ivory Coast
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Ait Bentaleb K.,Chouaïb Doukkali University | El Khattabi E.,Cadi Ayyad University | Lakraimi M.,Cadi Ayyad University | Benaziz L.,Cadi Ayyad University | And 3 more authors.
Journal of Materials and Environmental Science | Year: 2016

Wastes containing chromium are considered hazardous because of their behavior in the deep soil layers when stored in landfills. In an alkaline medium, it is estimated that the stability of chromate can be 50 years; they can migrate to groundwater, even through cohesive soils. That is why we are interested in the elimination of chromium VI by a strong adsorbent such as one that belongs to the family of layered double hydroxides (anionic clays). These materials are synthesized by co-precipitation method at constant pH. The affinity of material for CrO4 2- anion was studied as a function of contact time, pH of solution and mass ratio of [Zn-Al-Cl]/CrO4. The removal of chromium effluent is a rapid process. Indeed, at pH 7 and at room temperature, the adsorption equilibrium is reached after 120 min and the kinetics follow a pseudo second order model. The adsorption isotherm is in good agreement with the Langmuir model. The results show that retention of Cr(VI) by LDH is by adsorption to the outer surface and by intercalation between the layers of LDH via the anionic exchange reactions. Removal of Cr(VI) was confirmed by the XRD results (increasing interlamellar distance) and those of IR spectroscopy (appearance of characteristic bands). The percent removal of chromium VI by LDH reached 99.7% for LDH/CrO4 mass ratio equal to 3 with a maximum amount retained of 247,86 mg/g as ions CrO4 2- ions.

Tiampo K.F.,University of Western Ontario | Ouegnin F.-A.,University of Western Ontario | Ouegnin F.-A.,International University of Grand Bassam | Valluri S.,University of Western Ontario | And 3 more authors.
Pure and Applied Geophysics | Year: 2012

Historically, surface subsidence as a result of subsurface groundwater fluctuations have produced important and, at times, catastrophic effects, whether natural or anthropogenic. Over the past 30 years, numerical and analytical techniques for the modeling of this surface deformation, based upon elastic and poroelastic theory, have been remarkably successful in predicting the magnitude of that deformation (Le Mouélic and Adragna in Geophys Res Lett 29:1853, 2002). In this work we have extended the formula for a circular-shaped aquifer (Geertsma in J Petroleum Tech 25:734-744, 1973) to a more realistic elliptical shape. We have improved the accuracy of the approximation by making use of the cross terms of the expansion for the elliptic coordinates in terms of the eccentricity, e, and the mean anomaly angle, M, widely used in astronomy. Results of a number of simulations, in terms of e and M developed from the transcendental Kepler equation, are encouraging, giving realistic values for the elliptical approximation of the vertical deformation due to groundwater change. Finally, we have applied the algorithm to modeling of groundwater in southern California. © 2011 Springer Basel AG.

Kaba B.,International University of Grand Bassam | Osei-Bryson K.-M.,Virginia Commonwealth University
International Journal of Information Management | Year: 2013

Few studies have examined the influence of national culture on individuals' perceptions of Information and Communication Technology (ICT). Moreover the few existing studies have contradictory findings. While some researchers have suggested a relationship between culture and individuals' interactions with and perceptions of ICT innovations, other research found no such link. The purpose of this article is to better understand the influence of culture on individuals' attitudes by comparing the use of cellular phones in Quebec and Guinea. The findings suggest that Ease of Use and Usefulness are sensitive to cultural influence. However, the hypotheses relative to the moderating effects of culture on the Social Pressure, Image, average calls made and average turnaround time spent on the call are not supported. © 2013 Elsevier Ltd.

Kaba B.,International University of Grand Bassam | Osei-Bryson K.-M.,Virginia Commonwealth University
International Journal of Technology and Human Interaction | Year: 2012

Cellphones have changed the way people live. A deeper understanding of how the attributes of the se technologies influence end-users' perceptions is an important issue. A better understanding of cellular phone adoption and use process will inform people's understanding of the diffusion process of other types of communication technologies. This empirical paper examines the influence of the Technology Characteristics, Group Characteristics (Familiarity), Mobility, Facilitating Conditions, and Social Influence on the use of the cell phones. Data were collected through a questionnaire survey from a final sample of 277 cellphone users in Quebec (Canada). The results suggest that, among the factors mentioned, only Mobility has a direct influence on the adoption on all the three indicators of use defined in this study. These findings have theoretical and managerial implications, which are highlighted. Copyright © 2012, IGI Global.

Kaba B.,International University of Grand Bassam | Toure B.,International University of Grand Bassam
Journal of the Association for Information Science and Technology | Year: 2014

According to many studies, social network sites (SNS) have become some of the most popular online destinations. It has been pointed out that very little is known about the psychosocial variables that predict people's use of these websites. In this article, our general objective is to understand behavioral intentions to use SNS employing the well-known unified theory of acceptance and use of technology (UTAUT), which has been validated in a number of studies. Data were collected through a questionnaire survey from a final sample of 1,039 social networking website users in Africa.We have shown that there are contexts, such as the African context, in which the UTAUT does not hold up. Explanations are provided to support the findings. © 2014 ASIS&T.

Kaba B.,International University of Grand Bassam
2015 International Conference on Information Systems: Exploring the Information Frontier, ICIS 2015 | Year: 2015

Africa needs access to the powerful information and communication tools of the internet in order to obtain the resources and efficiency essential for its sustainable development. Unfortunately, in 2014, the data from showed only 9.8% of African populations have access to the internet. This relative low internet penetration rate signals a problem that may threaten the economic development, governmental efficiency, and ultimately the global competitiveness of African countries. Tremendous efforts have been made to provide internet access and policy makers often assumes that the advantaged and disadvantaged people will respond to the same technology in similar ways. The purpose of this paper is to understand differences between socio-economically advantaged and disadvantaged internet users. Data were collected through a survey from internet users in Ivory Coast. To address digital inequality effectively and economically, as Hsieh et al. (2008), we recommend a group alignment strategy to substitute the typical generic policy that does not distinguish ICT users and treat them as the same and offers a single invariant solution to all populations. The theoretical and practical implications are also described.

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