Results 61 to 70 of about 2,314 (173)

Urban and Power Plant NOx Emissions in Sub‐Saharan Africa Inferred From TROPOMI

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract Nitrogen oxides (NOx) emissions are increasing rapidly in Sub‐Saharan Africa, affecting local air quality. Outside South Africa, most hotspots are relatively small, posing a challenge for traditional top‐down inversions. We tailor an existing top‐down wind rotation and Gaussian plume fit inversion to suit the relatively small NOx hotspots for ...
Eloise A. Marais, Nana Wei, Eric Y. P. Tan, Gongda Lu, Sekou Keita, Mogesh Naidoo, Rebecca M. Garland   +6 more
wiley   +1 more source

Multithread Approximation: An OpenMP Constructor

Concurrency and Computation: Practice and Experience, Volume 38, Issue 4, February 2026.
ABSTRACT This study introduces an OpenMP construct designed to simplify and unify the integration of approximate computing techniques into shared‐memory parallel programs. Approximate Computing leverages the inherent error tolerance of many applications to trade computational accuracy for gains in performance and energy efficiency.
João Briganti de Oliveira, Rogério Aparecido Gonçalves, João Fabrício Filho   +2 more
wiley   +1 more source

Laplace Decomposition Method for Solving Fractional Black-Scholes European Option Pricing Equation [PDF]

, 2020
Fractional calculus is related to derivatives and integrals with the order is not an integer. Fractional Black-Scholes partial differential equation to determine the price of European-type call options is an application of fractional calculus in the ...
Owoyemi, Abiodun Ezekiel, Rusyaman, Endang, Sukono, Sukono, Sumiati, Ira   +3 more
core   +1 more source

Dynamic Debt With Intensity‐Based Models

Journal of Futures Markets, Volume 46, Issue 2, Page 334-352, February 2026.
ABSTRACT This article proposes a dynamic debt model where the face value of debt can change. In particular, our dynamic debt setting allows debt changes ruled by intensity processes that are linked to the firm value through the correlation between the stochastic processes. Analytical solutions are obtained, and we extend the proposed dynamic debt model
João Miguel Reis, José Carlos Dias
wiley   +1 more source

N2 fixation is linked to the ability to encroach in African savanna trees

Functional Ecology, Volume 40, Issue 2, Page 517-533, February 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Encroachment is a globally ubiquitous phenomenon, characterised by increasing indigenous tree densities in savanna and grassland. Encroachment has been attributed to rising atmospheric CO2 concentrations fertilising tree growth and shifting the competitive balance ...
Elizabeth M. Telford, Kimberley Simpson, Lorna Street, Emily Fletcher, Richard Carkeek, Russell B. Dixon, Katie J. Field, Emma Jones, Sarah L. Raubenheimer, Edith Singini, Brad Ripley, Colin P. Osborne, Caroline E. R. Lehmann   +12 more
wiley   +1 more source

A High-Order Numerical Method Based on a Spatial Compact Exponential Scheme for Solving the Time-Fractional Black–Scholes Model

Fractal and Fractional
This paper investigates a high-order numerical method based on a spatial compact exponential scheme for solving the time-fractional Black–Scholes model.
Xinhao Huang, Bo Yu
doaj   +1 more source

Supply chain risk in grain trading: Inventories as real options for shipping grain

Agribusiness, Volume 42, Issue 1, Page 175-195, Winter 2026.
Abstract Integrating trading and logistics is an important challenge in commodity trading. Trading and logistics are strategic decisions and are integral to most commodities including grain shipping by rail, in addition to other modes (barges, ocean shipping). There are substantial risks, such as the ordering and placement of rail cars.
William W. Wilson, Jesse Klebe
wiley   +1 more source

Solution of time fractional Black-Scholes European option pricing equation arising in financial market

Nonlinear Engineering, 2016
In this paper, we present fractional differential transform method (FDTM) and modified fractional differential transform method (MFDTM) for the solution of time fractional Black-Scholes European option pricing equation.
Ravi Kanth A.S.V., Aruna K.
doaj   +1 more source

Drivers of Hirola Antelope Diet Selection in Natural and Managed Habitat in Eastern Kenya

Ecology and Evolution, Volume 16, Issue 1, January 2026.
Hirola (Beatragus hunteri) populations in eastern Kenya consumed 17 forage species, favoring the grass Chloris virgata and the forbs Commelina benghalensis and C. diffusa. Nutrient analyses showed that natural habitats offered higher phosphorus, magnesium, and digestibility, whereas managed sites provided more sodium, potassium, and crude protein, with
Abdullahi H. Ali, S. Kivai
wiley   +1 more source

Pricing European and Barrier Options in the Fractional Black-Scholes Market [PDF]

The aim of this paper is to obtain the valuation formulas for European and barrier options if the underlying of the option contract is supposed to be driven by a fractional Brownian motion with Hurst parameter greater than 0.5.
Ciprian Necula
core