A5052618063- Hydrology and Watershed Management Studies
- Groundwater flow and contamination studies
- Cryospheric studies and observations
- Flood Risk Assessment and Management
- Hydraulic Fracturing and Reservoir Analysis
- Climate change and permafrost
- CCD and CMOS Imaging Sensors
- Enhanced Oil Recovery Techniques
- Digital Filter Design and Implementation
- Hydrology and Drought Analysis
- Hydrological Forecasting Using AI
- Organizational and Employee Performance
- Geophysical and Geoelectrical Methods
- Analytical Chemistry and Sensors
- Hydrology and Sediment Transport Processes
- Coastal wetland ecosystem dynamics
- Analog and Mixed-Signal Circuit Design
- Technology Adoption and User Behaviour
- Geriatric Care and Nursing Homes
- Health disparities and outcomes
- Soil erosion and sediment transport
- Numerical Methods and Algorithms
- Infrared Target Detection Methodologies
- Digital Marketing and Social Media
- Soil and Unsaturated Flow
University of Calgary
2023-2025
Cairo University
2019-2024
McMaster University
2024
Mansoura University
2023
University of Saskatchewan
2020-2021
Motorola (United States)
1999-2005
Wright State University
1999
Intercomparison studies play an important, but limited role in understanding the usefulness and limitations of currently available hydrological models. Comparison are often to well-behaved regimes, where rainfall-runoff processes dominate response. These efforts have not covered western Canada due difficulty simulating that region's complex cold region hydrology with varying spatiotemporal contributing areas. This intercomparison study is first a series under project international...
AI enhanced environmental modelling workflows: Towards Automated Scientific Exploration in HydrologyAuthors: Darri Eythorsson, Kasra Keshavarz, Cyril Thébault, Mohamed Ismaiel Ahmed, Raymond Spiteri, Alain Pietroniro and Martyn ClarkModern hydrological modeling has evolved into a complex scientific endeavour requiring sophisticated workflows that span multiple scales, processes, computational paradigms. While existing workflow solutions address specific technical challenges, the...
The St. Mary and Milk River (SMM) basin is an international transboundary watershed flowing between Canada the United States. composed of 2 distinct headwater basins that flow into Saskatchewan Nelson Mississippi basin, respectively. A diversion constructed in 1909 conveys water from higher-yielding lower-yielding River. Boundary Waters Treaty USA allowed for specific entitlements each country, allowing sharing combined resource both countries. Lack storage, conveyance changing hydrological...
High-resolution and high-complexity process-based hydrological models play a pivotal role in advancing our understanding prediction of water cycle dynamics, particularly ungauged basins under nonstationary climate conditions. However, the configuration, application, evaluation these are often hindered by intricate inconsistent nature priori information available various datasets, necessitating extensive preprocessing steps. These challenges can limit reproducibility, applicability,...
Modelling the streamflow of flat, and pothole-dominated prairie or arctic regions presents challenges due to influence variable Non-Contributing Areas (NCAs) on converting local runoff streamflow. Various models have been developed represent these NCAs their impact prediction. However, may not adequately capture dynamics, rely heavily calibration, are applicable large-scale basins, model agnostic. In response, we introduce an open-source model-agnostic version a revised Hysteretic...
High-latitude regions are challenging to model due their inherent data scarcity. This limitation hampers our ability gain robust process understanding and forecast how these will respond global warming land-use changes. Additionally, undergoing rapid changes driven by melting snow ice with far-reaching implications for downstream areas.In this study, we demonstrate the value of isotope-aided hydrological modeling in improving reliability. Using from two well-instrumented high-latitude...
Nelson Churchill River Basin (NCRB), Canada, and USA. Soil temperature moisture are essential variables that fluctuate based on soil depth, controlling several sub-surface hydrologic processes. The Hydrological Predictions for the Environment (HYPE) model's profile depth can vary up to four meters, discretized into three layers. Here, we further HYPE subsurface domain accommodate seven layers improve representation of thermodynamics water transfer more accurately. data from different...
Abstract Multi-phase flow in carbonate reservoirs, which hold about half of the world’s remaining oil reserves, is strongly influenced by fractures present geological formations. Fractures are often main conduits, leaving most behind low permeability rock matrix, and cause early water breakthrough. An accurate characterization fracture fluid exchange between matrix needed to forecast recovery optimise production fracture-dominated fracture-assisted reservoirs. Dual-porosity simulations...
The prairie region in Canada has been characterized as a graveyard of hydrological models due to its challenging cold-regions processes and complex landscape with numerous land depressions that influence runoff pathways. Efforts were made at the small-basin scale propose new algorithms and/or modify existing physically based order achieve some semblance coherent mathematical modeling system. To date, there very little research on modifying conceptual bucket-type include lateral pothole flow...
The North American prairie region is known for its poorly defined drainage system with numerous surface depressions that lead to variable contributing areas streamflow generation. Current approaches of representing are either simplistic or computationally demanding. In this study, a area algorithm implemented in the HYdrological Predictions Environment (HYPE) model and evaluated Canadian prairies. HYPE's local lake module replaced Hysteretic Depressional Storage (HDS) estimate fractions...
A new look-ahead (LA) scheme, distributed (DLA), is proposed for pipelined implementation of recursive digital filters. It established that, in the case many filters, DLA can provide equivalent and stable with reduced multiplication latch complexities, higher area-efficiency. also produces outputs delays, when compared some existing LA schemes. Stability regions scheme are well defined. Next, a time-domain approximation method direct design filters that achieve superior match filter orders.
We describe a CMOS image sensor with pixel level analog to digital conversion (ADC) having high dynamic range (>100db) and the capability of performing many processing functions at during capture. The has 102x98 array is implemented in 0.18um process technology. Each 15.5um x15.5um 15% fill factor comprised comparator, two 10 bit memory registers control logic. A converter system processor are located off-chip. photodetector produces photocurrent yielding photo-voltage proportional impinging...
Intercomparison studies have evaluated the utility and constraints of existing hydrological climate models worldwide. While some these focused on cold Northern latitude regions, initial phase Nelson Churchill River Basin (NCRB) Model Project (Nelson-MIP) was sole effort to examine unregulated watersheds in this transboundary basin Southwestern Canada Northwestern United States. Thus far, there remains a lack clarity regarding performance various regulated around globe specifically within...
Hydrologic modelling in the low-lying, flat prairie or arctic pothole regions is challenging because of variable contributing areas that modify transformation local runoff into streamflow. Most hydrological and land surface models fail predicting hydrology due to overlooking inadequately representing area dynamics. In this study, we develop an open-source, model-agnostic version a revised formulation recently developed Hysteretic Depressional Storage (HDS) model. This accounts for hysteretic...
The efficient management and remediation of contaminated fractured aquifers necessitate an accurate prediction the spatial distribution contaminant concentration within system. Related existing analytical solutions are only applicable to single fractures have not yet been extrapolated aquifer scale where a network connected exists. Random Walk Particle Tracking (RWPT) method has extensively adopted for mapping in Discrete Fracture Networks (DFNs), albeit at exorbitant computational costs...
The North American prairie region is characterized by numerous land depressions, resulting in spatiotemporally variable Non-Contributing Areas (NCAs) that impact runoff translation into streamflow. Current hydrological models address temporal changes NCA but neglect spatial distribution and geolocation. only maps available for the prairies were derived Prairie Farm Rehabilitation Association (PFRA) from paper-based contour using subjective interpretation of a 2-year rainfall event. PFRA are...
This research aims to investigate the relationship between of Brand Innovativeness on Electronic Word Mouth, this in field application which is smart watches customers Dakahliya.The Research adopted philosophy positivism, deductive approach, and method quantitative analysis as methodology.The instrument utilized for data collection was questionnaire.Consequently, 384 usable questionnaires were collected electronically through social media channels from Smart Watches Dakahliya.In addition,...
Modelling the hydrology of North American prairie region is complicated by dominance cold processes and flat topography, which contains millions depressions. The depressions contribute to variable contributing areas in basins, due their varying water storage. relationships between depressional storage, fraction are hysteretic strongly influence basin responses. Most hydrological models do not represent these complex relationships, therefore struggle simulating region. In this study, we...
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<p>The hydrography of the prairie basins is complicated by existence numerous land depressions, known as potholes, which can retain a substantial amount surface runoff. Consequently, runoff production in prairies follows fill, spill, and merging mechanism, results dynamic contributing area that makes streamflow simulation challenging. Existing approaches to represent potholes’ dynamics, different hydrological models, use either lumped or series reservoirs...