The research and application of gob-side entry retaining (GER) technology in Chinese coal mines has been over 60 years.Two major technical types including GER with filling and GER with roof cutting were developed.However, due to the complex mining and geological conditions of the mined-out coal seam in different mining areas, as well as the strong
The importance of foreign trade and its impact on the economic growth have been the subject of numerous studies.There is no doubt that exports have a multiplier effect on the growth of gross domestic product, but economists are constantly interested in what the foreign trade multiplier is and why Vitamin B-1 it is not higher.This paper deals with t
We calculate the instantaneous firing rate of a stochastic integrate-and-fire neuron driven by an arbitrary time-dependent signal up Table Bases to second order in the signal amplitude.For cosine signals, this weakly nonlinear theory reveals: (i) a frequency-dependent change of the time-averaged firing rate reminiscent of frequency locking in deter
Desmoplastic infantile gangliogliomas are very rarely Dab Rig encountered, large supratentorial masses, derived from neuroepithelial origin, which have cystic and solid components and contain cells with astrocytic and ganglionic differentiation.These tumors are benign tumors of childhood that become symptomatic when they reach giant sizes.Sixty cas
The accurate identification of overlapping Agaricus bisporus in a factory environment is one of the challenges faced by automated picking.In order to better segment the complex adhesion between Agaricus bisporus, this paper proposes a segmentation recognition algorithm for overlapping Agaricus bisporus.This algorithm calculates the global gradient