Purpose — This study assesses the symmetric and asymmetric effects of exchange rate volatility on trade flows in Nigeria.Method The employs quarterly data covers period 1995q1 to 2020q4. were sourced from International Financial Statistics (IFS) Central Bank Nigeria (CBN) websites. paper applies both linear ARDL non-linear (NARDL) models. These methods are employed evaluate volatility.Result re...

The current study explores the nexus between energy factors, blue green and carbon intensity in Saudi Arabia. non-linear ARDL technique is applied to data from 1991 2020. results suggest that overall impact of factors on emission insignificant, except adverse shocks intensity, which increase long run. Green are also irrelevant for emissions post-Vision 2030 period. Nevertheless, significant min...

this paper presents a new numerical method for solution of eikonal equation in two dimensions.in contrast to the previously developed methods which try to define the solution surface by its level sets(contour curves), the developed methodology identifies the solution surface by resorting to its characteristics. the suggested procedure is based on the geometric properties of the solution surface...

in this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. to analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. because of nonlinearity and coupling, these equations are solved using numerical methods and the results are ...

carbon sequestration into plants biomass, especially in fast growing trees is an easier and economically way for dropping off co2 from atmosphere. this study was carried out in order to investigate above-ground biomass of white poplar (populous alba, l.) plantations that was planted in fourdifferent plant spacing (0.5 × 0.5, 1×1, 2×2 and 4×4 m.) in chaharmahal and bakhtiari province in west of ...

bankruptcy is an event with strong impacts on management, shareholders, employees, creditors, customers and other stakeholders, so as bankruptcy challenges the country both socially and economically. therefore, correct prediction of bankruptcy is of high importance in the financial world. this research intends to investigate financial crisis prediction power using models based on neural network...

abstract in current study, an irrigation examination and acquisition of environmental water in kor-river fields, that is dominated from doroudzan dam to bakhtegan lake, was done by an integrated economy-environmental model. the model was considered by economic, hydrologic and agronomic components. in the economic component, an optimal harvesting of water was done using non-linear programming in...