A5081118678- Hydrology and Watershed Management Studies
- Climate variability and models
- Hydrology and Drought Analysis
- Cryospheric studies and observations
- Flood Risk Assessment and Management
- Geological and Geophysical Studies Worldwide
- Cognitive and developmental aspects of mathematical skills
- Plant Water Relations and Carbon Dynamics
- Groundwater and Isotope Geochemistry
- Soil erosion and sediment transport
- Reading and Literacy Development
- Groundwater and Watershed Analysis
- Urban Heat Island Mitigation
- Climate change and permafrost
- Irrigation Practices and Water Management
- Landslides and related hazards
- Remote Sensing in Agriculture
- Mathematics Education and Teaching Techniques
- Karst Systems and Hydrogeology
- Water management and technologies
- Precipitation Measurement and Analysis
- Mine drainage and remediation techniques
- Mediterranean and Iberian flora and fauna
- Education, Achievement, and Giftedness
- School Choice and Performance
Cadi Ayyad University
2015-2024
Université Mohammed VI Polytechnique
2020-2022
Mohammed V University
2021
Sup de Co Marrakech
2004-2020
Centre National pour la Recherche Scientifique et Technique (CNRST)
2012-2019
Millersville University
2003-2013
University of Delaware
2000-2003
Université d'Artois
1992
Mathematical competencies of 180 children were examined at 4 points between 2nd and 3rd grades (age range 7 9 years). Children initially classified into one groups: math difficulties but normal reading (MD only), (MD-RD), (RD achievement in (NA). The groups did not differ significantly rate development. However, the end grade MD only group performed better than MD-RD problem solving calculation. NA RD most areas. Deficiencies fact mastery calculation fluency, particular, are defining...
Researchers of mathematics learning disability (MLD) commonly use cutoff scores to determine which participants have MLD. Some researchers apply more restrictive cutoffs than others (e.g., performance below the 10th vs. 35th percentile). Different may lead groups children that differ in their profile math and related skills, including reading, visual—spatial, working memory skills. The present study assesses characteristics with MLD based on varying definitions either percentile ( n = 22) or...
The performance of 210 2nd graders in different areas mathematical cognition was examined. Children were divided into 4 achievement groups: children with difficulties mathematics but not reading (MD-only), both and (MD/RD), mathematics, normal achievement. Although MD groups performed worse than normally achieving most cognition, the MD-only group showed an advantage over MD/RD exact calculation arithmetic combinations problem solving. 2 did differ approximate understanding place value...
Based on their performance a standardized achievement test, second-grade children (N = 49) were classified as having mathematics difficulties with normal reading (MD only), both and (MD/RD), (RD only) (NA). Each child was given series of tasks so that we might assess thinking across four areas mathematics: number facts, story problems, place value, written calculation. Children MD/RD performed significantly worse than NA in most mathematical thinking, whereas MD only complex problems. The...
The reading and mathematics growth of 180 children was examined over 4 points, spanning 2nd 3rd grades.Initially, achievement groups were identified: difficulties in but not (MD only), as well (MD-RD), (RD normal reading.When IQ, income, ethnicity, gender held constant, the MD-only group grew at a faster rate than did MD-RD group.In reading, RD-only about same rate.Reading abilities influence children's mathematics, do reading.
This study aimed to quantify possible climate change impacts on runoff for the Rheraya catchment (225 km2) located in High Atlas Mountains of Morocco, south Marrakech city. Two monthly water balance models, including a snow module, were considered reproduce surface period 1989‒2009. Additionally, an ensemble five regional models from Med-CORDEX initiative was evaluate future changes precipitation and temperature, according two emissions scenarios RCP4.5 RCP8.5. The projections 2049‒2065...
In arid and semi-arid areas, rainfall is often characterized by a strong spatial temporal variability. These environmental factors, combined with the sparsity of measurement networks in developing countries, constitute real constraints for water resources management. recent years, several sources have become available, such as TRMM data (Tropical Rainfall Measurement Mission). this study, 3B42 Version 7 product was evaluated using rain gauges measurements from 19 stations Oum-Er-Bia (OER)...
Monitoring of water resources and a better understanding the eco-hydrological processes governing their dynamics are necessary to anticipate develop measures adapt climate water-use changes. Focusing on this aim, research project carried out within framework French–Moroccan cooperation demonstrated how remote sensing can help improve monitoring modelling in semi-arid Mediterranean regions. The study area is Tensift Basin located near Marrakech (Morocco) – typical Southern catchment with...
Intermittent rivers are prevalent in many countries across Europe, but little is known about the temporal evolution of intermittence and its relationship with climate variability. Trend analysis annual seasonal number zero-flow days, maximum duration dry spells mean date events performed on a database 452 varying degrees between 1970 2010. The relationships flow investigated using standardized precipitation evapotranspiration index (SPEI) indices describing large-scale atmospheric...
In this study we quantified the sensitivity of snow to climate warming in selected mountain sites having a Mediterranean climate, including Pyrenees Spain and Andorra, Sierra Nevada California (USA), Atlas Morocco, Andes Chile. Meteorological observations from high elevations were used simulate energy mass balance (SEMB) calculate its climate. Very different sensitivities evident amongst various sites. For example, reductions 9%–19% 6–28 days mean water equivalent (SWE) duration,...
Recent efforts have been concentrated in the development of models to understand and predict impact environmental changes on hydrological cycle water resources arid semi‐arid regions. In this context, remote sensing data widely used initialize, force, or control simulations these models. However, for several reasons, including difficulty establishing relationships between observational model variables, potential offered by satellite has not fully used. As a matter fact, few studies that use...
Abstract In the centre of Morocco, High Atlas mountain range represents most important water storage for neighbouring arid plains through liquid and solid precipitation. this context, we evaluated performance Snowmelt Runoff Model (SRM) on five main tributary watersheds range. Due to very low density climate stations in Atlas, snowfall snowmelt processes are difficult monitor using meteorological data alone. order compensate lack situ data, snow maps also derived from remotely-sensed data....
Abstract The snow melt from the High Atlas represents a crucial water resource for crop irrigation in semiarid regions of Morocco. Recent studies have used assimilation cover area data high‐resolution optical sensors to compute equivalent and other mountain regions. These techniques however require large model ensembles, therefore it is challenge determine adequate resolution that yields accurate results with reasonable computation time. Here we study sensitivity an energy balance grid pilot...
The Atlas Mountains of Morocco, specifically the High Oum Er-rbiaa (HOER) and Ourika catchments. to identify recharge processes within semi-arid watersheds, in Mountains, through monthly monitoring snow, rainfall, surface water, groundwater isotope signal, but also usage remote sensing data. spatial-temporal analysis precipitation isotopes reveals significant spatial heterogeneity, primarily influenced by geological variations each aquifer. Temporal indicate that direct occurs response...
The Maghreb countries located in North Africa are strongly impacted by floods, causing extended damage and numerous deaths. Until now, the lack of accessibility river discharge data prevented regional studies on potential changes flood hazards or development frequency estimation methods. A new database daily for 98 basins Algeria, Morocco, Tunisia, has been compiled, with an average 36 years complete records over time period 1960–2018. peaks-over-threshold sampling events is considered first...
Several satellite-based precipitation estimates are becoming available at a global scale, providing new possibilities for water resources modelling, particularly in data-sparse regions and developing countries. This work provides first validation of five different products (TRMM-3B42 v6 v7, RFE 2.0, PERSIANN-CDR, CMORPH1.0 version 0.x) the 1785 km2 Makhazine catchment (Morocco). Precipitation compared against ground observations. Ten raingauges four interpolation methods (inverse distance,...