Not all metrics are created equal and therefore they should not be treated, tracked, and discussed equally.
The polymer treated track is observed to reduce permanent track settlement by 99%, effectively giving slab-track like performance.
Reducing both the powder feed rate and the workpiece traverse velocity could reduce the occurrence of cracks in the treated tracks.
The former corresponded to decreasing the α-Al2O3 content in the treated tracks, and the latter to decreasing the cooling and solidifying rate of the melt pool.
In this paper, the crack length per unit surface area and crack density of single treated tracks with respect to the three process parameters: laser irradiation intensity, powder feed rate and workpiece traverse velocity, have been investigated by employing a statistical approach involving statistical experiment design and regression analysis.
Furthermore, the existing trajectory tracking algorithms mainly deal with tracking object either using sophisticated invasive and expensive sensors [3,4], or treating tracking as a Hidden Markov Model (HMM) which needs adequate training data set to obtain model's parameter [5].
4, 15, 16 For example, in an analysis of adherence to statin therapy in newly treated patients tracked in an administrative database, compared with a PDC >80%, a PDC of 21%40%% was associated with a greater risk of all-cause death, acute myocardial infarction, and stroke.
Dr. Chan said that government preparedness plans could include steps like ensuring that laboratories can test for the disease and that health systems can identify and treat cases, track an outbreak and prevent the virus from spreading in hospitals and clinics.
Health workers have been unable to treat or track this case and the resulting potential infection of others.
