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Search Results: 1 - 10 of 28 matches for " Wided Batita "
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WikiGIS Basic Concepts: Web 2.0 for Geospatial Collaboration
Stéphane Roche,Boris Mericskay,Wided Batita,Matthieu Bach,Mathieu Rondeau
Future Internet , 2012, DOI: 10.3390/fi4010265
Abstract: With the emergence of Web 2.0, new applications arise and evolve into more interactive forms of collective intelligence. These applications offer to both professionals and citizens an open and expanded access to geographic information. In this paper, we develop the conceptual foundations of a new technology solution called WikiGIS. WikiGIS’s strength lies in its ability to ensure the traceability of changes in spatial-temporal geographic components (geometric location and shape, graphics: iconography and descriptive) generated by users. The final use case highlights to what extent WikiGIS could be a relevant and useful technological innovation in Geocollaboration.
The Impact of Technology Development on Youth Consumption Culture: An Empirical Investigation of French Teenage’ Use of Mobile Phone Device
Wided BATAT
Communications of the IBIMA , 2009,
Abstract: The importance of the symbolic properties of goods has been explored among adult consumers, but there have been less attention given to the symbolic consumption of young people. This study explores the subject of symbolic consumption with specific reference to mobile phone devices in the teenage market. Thirty-two young people were interviewed and age and sex variations are considered among four age ranges: middle school (14-15), high school (16-18), university (19-22) and higher education/first job (23-25). The results suggest that mobile use is closely bound to the adolescent’s self-concept. Therefore the social, the entertainment, the self-construction, the consumption skills and the self-creation dimensions linked to teen’s use of the cell phone devices disappear or appear with the age. The findings of this study illustrate this consumption practises and provides evidence about the symbolic dimension emerging in the use of mobile phone devices among different periods of life.
Mobile Information Collectors Trajectory Data Warehouse Design
Wided Oueslati,Jalel Akaichi
International Journal of Managing Information Technology (IJMIT) , 2010,
Abstract: To analyze complex phenomena which involve moving objects, Trajectory Data Warehouse (TDW) seemsto be an answer for many recent decision problems related to various professions (physicians,commercial representatives, transporters, ecologists …) concerned with mobility. This work aims to maketrajectories as a first class concept in the trajectory data conceptual model and to design a TDW, inwhich data resulting from mobile information collectors’ trajectory are gathered. These data will beanalyzed, according to trajectory characteristics, for decision making purposes, such as new productscommercialization, new commerce implementation, etc.
Extending UML for trajectory data warehouses conceptual modelling
Wided Oueslati,Jalel Akaichi
International Journal of Advanced Computer Sciences and Applications , 2012,
Abstract: The new positioning and information capture technologies are able to treat data related to moving objects taking place in targeted phenomena. This gave birth to a new data source type called trajectory data (TD) which handle information related to moving objects. Trajectory Data must be integrated in a new data warehouse type called trajectory data warehouse (TDW) that is essential to model and to implement in order to analyze and understand the nature and the behavior of movements of objects in various contexts. However, classical conceptual modeling does not incorporate the specificity of trajectory data due to the complexity of their components that are spatial, temporal and thematic (semantic). For this reason, we focus in this paper on presenting the conceptual modeling of the trajectory data warehouse by defining a new profile using the StarUML extensibility mechanism
A Survey on Data Warehouse Evolution
Wided Oueslati,Jalel Akaichi
International Journal of Database Management Systems , 2010,
Abstract: The data warehouse (DW) technology was developed to integrate heterogeneous information sources foranalysis purposes. Information sources are more and more autonomous and they often change theircontent due to perpetual transactions (data changes) and may change their structure due to continualusers' requirements evolving (schema changes). Handling properly all type of changes is a must. In fact,the DW which is considered as the core component of the modern decision support systems has to beupdate according to different type of evolution of information sources to reflect the real world subject toanalysis. The goal of this paper is to propose an overview and a comparative study between differentworks related to the DW evolution problem.
Mobile Information Collectors' Trajectory Data Warehouse Design
wided oueslati,jalel akaichi
Computer Science , 2010,
Abstract: To analyze complex phenomena which involve moving objects, Trajectory Data Warehouse (TDW) seems to be an answer for many recent decision problems related to various professions (physicians, commercial representatives, transporters, ecologists ...) concerned with mobility. This work aims to make trajectories as a first class concept in the trajectory data conceptual model and to design a TDW, in which data resulting from mobile information collectors' trajectory are gathered. These data will be analyzed, according to trajectory characteristics, for decision making purposes, such as new products commercialization, new commerce implementation, etc.
A Survey on Data Warehouse Evolution
wided oueslati,jalel akaichi
Computer Science , 2010,
Abstract: The data warehouse (DW) technology was developed to integrate heterogeneous information sources for analysis purposes. Information sources are more and more autonomous and they often change their content due to perpetual transactions (data changes) and may change their structure due to continual users' requirements evolving (schema changes). Handling properly all type of changes is a must. In fact, the DW which is considered as the core component of the modern decision support systems has to be update according to different type of evolution of information sources to reflect the real world subject to analysis. The goal of this paper is to propose an overview and a comparative study between different works related to the DW evolution problem.
A Trajectory UML profile For Modeling Trajectory Data: A Mobile Hospital Use Case
Wided Oueslati,Jalel Akaichi
Computer Science , 2011,
Abstract: A large amount of data resulting from trajectories of moving objects activities are collected thanks to localization based services and some associated automated processes. Trajectories data can be used either for transactional and analysis purposes in various domains (heath care, commerce, environment, etc.). For this reason, modeling trajectory data at the conceptual level is an important stair leading to global vision and successful implementations. However, current modeling tools fail to fulfill specific moving objects activities requirements. In this paper, we propose a new profile based on UML in order to enhance the conceptual modeling of trajectory data related to mobile objects by new stereotypes and icons. As illustration, we present a mobile hospital use case.
Adsorption of F-, NO3- and SO42- on AFN Anionic Membrane: Kinetics and Thermodynamics Studies  [PDF]
Chiraz Hannachi, Fatma Guesmi, Wided Bouguerra, Bèchir Hamrouni
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.49064
Abstract:

The sorption of \"\" and \"\" from aqueous solution on AFN membrane has been studied and the equilibrium isotherms determined. The experimental data have been analyzed using the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models at different temperatures varying from 283 to 313 K. The results were analyzed using three kinetic models, Lagergen first order, second order and the Elovich model. The obtained results show that the best-fit correlation of the experimental data was obtained using the second order model. Thermodynamic parameters for the adsorption system were determined at 283, 298 and 313 K.

Boron Removal by Electrocoagulation Using Full Factorial Design  [PDF]
Khaoula Missaoui, Wided Bouguerra, Chiraz Hannachi, Béchir Hamrouni
Journal of Water Resource and Protection (JWARP) , 2013, DOI: 10.4236/jwarp.2013.59088
Abstract:

Saline waters treatment has become increasingly important for drinking water supply in a greater part of the world. However, some serious limitations had recently been discovered during water treatment, among them the boron problem seems to have a critical meaning. According to the WHO regulations (2011), the boron concentration should be reduced to less than 2.4 mg/L for drinking water. The purpose of this study is to investigate the feasibility of electrocoagulation (EC) as a pretreatment process to remove boron from saline waters. To optimize the experimental conditions of boron removal, the effects of some parameters were studied such as inter-electrode distance (die), electrode connection mode, (S/V) ratio, pHi and initial conductivity of the solution (σi). Subsequently, an experimental design methodology was implemented to evaluate statistically the most significant operating parameters. The effects of current density, EC time and initial boron concentration and their mutual interaction were investigated using 23 full factorial design. At optimal conditions, boron removal from synthetic aqueous solutions containing initial boron concentrations of 5 and 50 mg/L reached 81% and 79%, respectively. Applied to boron removal from seawater samples, EC reduces boron concentration to less to 2.4 mg/L with excessive energy consumption under optimal parameters.

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