Atef Belhaj Ali

Atef Belhaj Ali
Barthauer Software GmbH · International Sales & Business Development

PhD Geographical information Sciences
GIS, Remote Sensing and Geospatial technologies Expert

About

27
Publications
23,322
Reads
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78
Citations
Citations since 2016
13 Research Items
41 Citations
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Introduction
More than 20 years of experience in Geospatial-Database Design; GIS Web based Applications Development; GIS Projects technical Study, analysis, monitoring and setting up technical specifications tailored to customer needs;Setting up and implementing GIS Technical plan strategy for Geospatial data integration into user's business process and environment; Building Applications based on geodatabase; Mapping and Cartographic projects management Geographic Database Design.
Additional affiliations
January 2010 - September 2013
Regional centre of remote sensing for north african states
Position
  • Project Manager
July 1992 - November 2006
National centre of cartography and remote sensing, tunisia
Position
  • Managing Director
Education
September 1998 - November 2001
Université Gustave Eiffel
Field of study
  • Geographic Information Sciences
September 1996 - July 1998
Université Gustave Eiffel
Field of study
  • Geographic Information Sciences
September 1992 - July 1993
Université de la sorbonne
Field of study
  • Remote sensing

Publications

Publications (27)
Article
Full-text available
Assessing the quality of a geographical data set requires comparison with a reference data set where the positions, shapes and functions of the geographical entities involved are described more realistically, i.e., more accurately and more precisely. While positional accuracy and semantic exactitude have been much studied by GI scientists, and also...
Article
Full-text available
There has been extreme utilization of petroleum derivatives in recent decades for the generation of electrical vitality, which is contaminating nature in a regularly expanding approach to respond to the exponential demand for electrical power. In light of the essential vision of Saudi Arabia’s government towards the fractional change of reliance on...
Article
Full-text available
Today, climate change imposes enormous challenges on a global scale. The interactions of the balances between the need for development, population growth, massive urbanization generate a negative impact on the presence of these climate changes. One of the direct consequences of these changes is the phenomenon of flash floods, a phenomenon that hit...
Article
Full-text available
The determination of geoid models with great precision (centimeter) was always at the center of interest in geodesy research [1] [2]. One of the most used methods to calculate the geoid model is the method called Remove-Compute-Restore (R-C-R). This method applies the stokes’ integral formula by the use of short, medium and long wavelength informat...
Article
In order to preserve water resources and conserve agricultural land and biodiversity, a precise assessment of soil losses is necessary. It is for this reason that the empirical model of revised RUSLE soil loss equation was applied in order to quantify and describe the rate of erosion in Allal Al Fassi watershed, located in the Middle Atlas mountain...
Article
Full-text available
Rainfed agriculture is very sensitive to agro-meteorological factors such as temperature, humidity, sunshine and radiation or hygrometry and, therefore, the evolution of crops is necessarily affected by changing climatic conditions. The main expected expressions of climate change in Morocco include reduced rainfall, increased temperatures and inten...
Chapter
This paper presented a method allowing the estimation of the population at the local scale from the data resulting from the interpretation of the satellite images. The aim was to estimate the number of inhabitants in each habitable area for the year 2017. This estimate is based on the data census of 2010 and the interpretation of images gathered by...
Article
Full-text available
Saudi Arabia is attempting to develop a long-term tourism business that respects Islamic ideals, heritage, and traditions. In accordance with the “Vision of the Kingdom of Saudi Arabia 2030”, significant emphasis has been placed on developing and promoting cultural tourism as a result of the Kingdom’s very valuable civilizational and cultural herit...
Chapter
This paper presented a method allowing the estimation of the population at the local scale from the data resulting from the interpretation of the satellite images. The aim was to estimate the number of inhabitants in each habitable area for the year 2017. This estimate is based on the data census of 2010 and the interpretation of images gathered by...
Article
Full-text available
This paper addresses how open geodata and crowd-sourced geodata, and the open geoportals might be integrated with the mainstream surveying and mapping practices to update traditional topomaps quickly and inexpensively, that might be otherwise impossible to do it due to economic and logistic situations. The abundant geographic data on the internet c...
Article
Full-text available
Located in the South-west of Saudi Arabia, Jeddah is more than a harbour. It is Saudi Arabia’s biggest Red Sea city and second only to Riyadh the capital. During summer, this metropolis becomes a political capital and a tourist resort for foreigners and Saudis alike. The city of Jeddah was affected by serious and unexpected floods; two great ones t...
Article
Full-text available
It is well-known that, when dealing with density of population, most of the proposed maps choose the easiest and probably the most understandable cartographic method, i.e. the choropleth method. Nevertheless, for heterogonous spaces and those observing intense spatial dynamic, it is proven that this method has many lacks and deficiencies. This is t...
Article
Full-text available
It is well-known that, when dealing with density of population, most of the proposed maps choose the easiest and probably the most understandable cartographic method, i.e. the choropleth method. Nevertheless, for heterogonous spaces and those observing intense spatial dynamic, it is proven that this method has many lacks and deficiencies. This is t...
Article
Full-text available
Tunisia has a dense hydrographic network in the north, whose river basins account for 81% of the national surface water potential. Oued Mejerda, which rises in Algeria, is the biggest river, with an annual water potential of around 0.8 billion m3. This region is prone to flooding events and the problem arises seriously in the upstream of Sidi Salem...
Presentation
Full-text available
North African hydrological processes undergo very high spatial and temporal variability due to tropical-subtropical interaction, land-sea contrast, complex orographic features, and gradients in soil moisture and temperature. The hydrological regimes of the region include major water basins in Tunisia and Morocco, which are generally characterized b...
Technical Report
Full-text available
Par définition, un atlas géographique est un recueil de cartes commentées dressant une représentation de l’état actuel d’une région ou d’un gouvernorat comprenant un vaste ensemble de données spatialisées. Ainsi l’atlas dresse un portrait graphique du gouvernorat abordant différents thèmes liés au milieu physique, aux caractéristiques sociales à l’...
Technical Report
Full-text available
Poster
Full-text available
L'expérience tunisienne en matière de développement des bases de données urbaines a débuté en 1997 par une réflexion approfondie menée par tous les acteurs nationaux, accompagnée par des actions de sensibilisation auprès des collectivités locales désignées comme utilisatrices potentielles des dites données. Un chantier de collecte de données géogra...
Thesis
Full-text available
Ce travail de thèse est consacré à l'étude de la géométrie des entités surfaciques dans les bases de données géographiques, dans un contexte d'évaluation de la qualité de la forme et de la position. Le rapport est constitué de trois chapitres. Il débute par l'étude des concepts sur la qualité des données géographiques. L'étude s'est orientée vers l...
Article
Full-text available
L’information géographique numérique est souvent entachée d’erreurs. Ces erreurs sont généralement de nature différente, que nous pouvons classifier d’une manière caricaturale en deux grandes classes : • erreurs d’origine humaines, causées par l’opérateur lors des phases de saisie, d’interprétation ou d’analyse, • erreurs causées par la machine, ce...

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Projects

Projects (6)
Archived project
This project is related to the opening of geodata and crowd-sourced geodata. The open geoportals might be integrated with the mainstream surveying and mapping practices to update traditional topomaps quickly and inexpensively, that might be otherwise impossible to do it due to economic and logistic situations. The abundant geographic data on the internet could be used to update topographic maps while avoiding the time-consuming nature of the traditional method. To be able to use them, it is necessary to measure and quantify the quality of these data, as well as to verify their credibility, in order to incorporate them into official topographic maps. The proposed approach takes advantage of neocartography, and it’s not about further developing a new approaches, but looking differently at how data is collected, assembled controlled and been used for updating topomaps.The methodology used involved in collecting, simplifying, generalizing, controlling and generating useful cartographic information that complement traditional and conventional counterparts is presented. This methodology is applied on a 1/50,000 topomap located in the north of Jeddah city (western region of Saudi Arabia). This project was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, Saudi Arabia, under grant No. G-536-125-1434.
Archived project
It is well-known that, when dealing with density of population, most of the proposed maps choose the easiest and probably the most understandable cartographic method, i.e. the choropleth method. Nevertheless, for heterogonous spaces and those observing intense spatial dynamic, it is proven that this method has many lacks and deficiencies. This is the case of Jeddah city (the second largest city in Saudi Arabia), which is a very contrasted urban place with regards to its social structure, spatial organization and land use besides the fact that it witnesses a profound and continuous urban growth. Yet, most of the planning decisions are often taken on these types of maps and may mislead the urban planners. In this context, the dasymetric maps reveal very useful because they may give the real distribution of the population. Therefore, we think that establishing a dasymetric map at a convenient scale with regards to the results of satellite image processing may help the planners and the geographers as well as the common users. Indeed, this method may be an interesting alternative to the classic choropleth map. First it may improve our estimations towards the density within the various areas of the districts. Second it may refine the original enumeration units often using the administrative apportionment and therefore help the planning and agricultural agencies when establishing their base maps. The satellite image processing and GIS were used as tools in this study. This project was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, under grant No. G-540-125-1434.