AN OPERATIONAL IMPROVEMENT OF A-4DENVAR AND ITS APPLICATION TO THE ESTIMATION OF THE SPATIALLY VARYING BOTTOM FRICTION COEFFICIENTS OF THE M2 CONSTITUENT IN THE BOHAI AND YELLOW SEAS

The analytical four-dimensional ensemble variational (A-4DEnVar) data assimilation scheme inherits the advantages of the conventional four-dimensional variational (4D-Var) data assimilation scheme and removes the adjoint model.However, compatible operational improvements such as the reduction of the computational costs and the localization method s

Background Data: Spinal chronic subdural hematoma is an extremely rare condition nevertheless it can results in a disastrous neurological status.Purpose: To report a case of dorsal chronic subdural hematoma with acute paraplegia.Study Design: Case report.Methods: Our 61-year-old female patient presented with a one day history of sudden onset of mot

In this study have followed the oils and grease in Tigris River within Baghdad city during the period 2010-2015 by using ArcGIS 10.2 program.Two sony c satellite image of each year were used which were taken in as same time as collected samples and painted the mapping which show the locations of pollution the human after all vinyl river by oil and

In recent years, the development of wireless technologies has led to fast growth in mobile networks, especially with the rise beetroot birkenstock of 5G New Radio (5G NR).A huge number of base stations (BSs) are mandatory to serve the growth of mobile services, which has led to concerns about the increase in electromagnetic field (EMF) radiation ex