College of Arts & Sciences: Recent submissions
Now showing items 461-480 of 3563
-
Conformal Invariants in Simply Connected Domains
( Springer Link , 2020 , Article)This paper studies the numerical computation of several conformal invariants of simply connected domains in the complex plane including, the hyperbolic distance, the reduced modulus, the harmonic measure, and the modulus ... -
Computation of conformal invariants
( Elsevier , 2020 , Article)We study numerical computation of conformal invariants of domains in the complex plane. In particular, we provide an algorithm for computing the conformal capacity of a condenser. The algorithm applies to a wide variety ... -
Condenser capacity and hyperbolic diameter
( Elsevier , 2021 , Article)Given a compact connected set E in the unit disk B2, we give a new upper bound for the conformal capacity of the condenser (B2,E) in terms of the hyperbolic diameter t of E. Moreover, for t>0, we construct a set of hyperbolic ... -
Isoperimetric properties of condenser capacity
( Elsevier , 2021 , Article)For compact subsets E of the unit disk D we study the capacity of the condenser (D,E) by means of set functionals defined in terms of hyperbolic geometry. In particular, we study experimentally the case of a hyperbolic ... -
Condenser capacity and hyperbolic perimeterImage 1
( Elsevier , 2021 , Article)We study the conformal capacity by using novel computational algorithms based on implementations of the fast multipole method, and analytic techniques. Especially, we apply domain functionals to study the capacities of ... -
Level sets of potential functions bisecting unbounded quadrilaterals
( Springer Nature , 2022 , Article)We study the mixed Dirichlet–Neumann problem for the Laplace equation in the complement of a bounded convex polygonal quadrilateral in the extended complex plane. The Dirichlet / Neumann conditions at opposite pairs of ... -
Conformal capacity and polycircular domains
( Elsevier , 2023 , Article)We study numerical conformal mapping of multiply connected planar domains with boundaries consisting of unions of finitely many circular arcs, so called polycircular domains. We compute the conformal capacities of condensers ... -
New Simulation Model for Workload Analysis Addressing Occupational Stress in a Production Company
( Elsevier , 2022 , Conference Paper)In today's world, occupational stress is identified as a major health issue within most organizations. The reason the spotlight has been focused on occupational stress in recent years is that it can have a negative impact ... -
Smartphone-based Vehicle Telematics for Naturalistic Driving Studies
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)Motor vehicle collisions (MVCs) are the eighth leading cause of death worldwide. Globally, there are 1.35 million deaths with 50 million injuries annually. It is important to understand and record how people drive and ... -
Solving a Bus Routing Problem Arising in Doha
( IEEE Computer Society , 2022 , Conference Paper)The generic variant of the school bus routing problem requires finding a set of routes that cover a predefined set of student pickup locations in order to minimize travel time while satisfying various constraints. In this ... -
Polycircular domains, numerical conformal mappings, and moduli of quadrilaterals
( Springer Nature , 2022 , Article)We study numerical conformal mappings of planar Jordan domains with boundaries consisting of finitely many circular arcs, also called polycircular domains, and compute the moduli of quadrilaterals for these domains. ... -
Conducting polyaniline nanorods doped with aromatic carboxyl chain end functionalized polystyrene
( Elsevier , 2015 , Article)The preparation of new conducting polyaniline (PANI) derivatives with different nanostructures is described. PANI derivatives doped with aromatic carboxyl chain end functionalized polystyrene derivatives of different number ... -
Characteristics and renewal of zooplankton communities under extreme environmental stresses in the oligotrophic hypersaline Arabian Gulf
( Elsevier , 2022 , Article)Impacts of the exceptionally high temperature and salinity on species composition, abundance, biomass and diversity of zooplankton communities were examined in the central Arabian (Persian) Gulf in late winter and summer ... -
Standing stocks and body size of deep-sea macrofauna: Predicting the baseline of 2010 Deepwater Horizon oil spill in the northern Gulf of Mexico
( Elsevier , 2012 , Article)A composite database encompassing 6 benthic surveys from years 1983 to 2003 was constructed to evaluate the distribution of macrofaunal biomass in the deep Gulf of Mexico (GoM) prior to the Deepwater Horizon oil spill. ... -
Phytoplankton along the coastal shelf of an oligotrophic hypersaline environment in a semi-enclosed marginal sea: Qatar (Arabian Gulf)
( Elsevier , 2013 , Article)Phytoplankton biomass (chlorophyll a concentration), primary production, abundance, species diversity and species groupings were measured in the coastal waters surrounding Qatar (Arabian Gulf) at 13 stations in February ... -
Seasonal and body size-dependent variability in the bioaccumulation of PAHs and their alkyl homologues in pearl oysters in the central Arabian Gulf
( Elsevier , 2022 , Article)Spatiotemporal concentration patterns for 19 parents and their alkyl homologues were measured in Pinctada radiata from 7 locations in the central Arabian Gulf around Qatar in the winter, spring and summer (2014–2015). The ... -
Microstructure and mechanical behavior of hot extruded aluminum/tin-bismuth composites produced by powder metallurgy
( MDPI AG , 2020 , Article)In this study, Al-BiSn composites were synthesized by a combination of microwave sintering and hot extrusion processes. The structural, morphological, mechanical, and thermal properties were investigated to elucidate the ... -
Adsorption characteristics of pristine and magnetic olive stones biochar with respect to clofazimine
( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Olive stone biochars (OSBC), both pristine and following magnetization (MAG–OSBC), were utilized as eco‐friendly and cost‐effective sorbents for the antituberculosis, clofazimine (CLOF). Morphologies, textures, surface ... -
Green tea waste as an efficient adsorbent for methylene blue: Structuring of a novel adsorbent using full factorial design
( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Adsorptive removal of methylene blue (MB) from contaminated water samples was achieved using green tea waste (GTW). Adsorption of MB onto raw (RGTW) and thermally treated waste (TTGTW250–TTGTW500) was explored. The performance ... -
Performance of Pristine versus Magnetized Orange Peels Biochar Adapted to Adsorptive Removal of Daunorubicin: Eco-Structuring, Kinetics and Equilibrium Studies
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Drugs and pharmaceuticals are an emergent class of aquatic contaminants. The existence of these pollutants in aquatic bodies is currently raising escalating concerns because of their negative impact on the ecosystem. This ...
