Electrical parameters of spinal motoneurons were estimated by optimizing the parameters of motoneuron models to match experimentally determined impedance functions with those of the models. The model was described by soma area, somatic and dendritic membrane resistivities, and the diameter of an equivalent dendritic cable having a standard profile. The impedance functions of motoneurons and opt...

Since the launch of Sentinel-1 mission, automated processing systems have been developed for near real-time monitoring ground deformation signals. Here, we perform a regional analysis 5 years over 64 volcanic centres located along East African Rift System (EARS). We show that correction atmospheric signals arid and low-elevation EARS volcanoes is less important than other environments. find amp...

In the above paper Chen et al. investigated the capability of uniformly approximating functions in C(Rn) by standard feedforward neural networks. They found that the boundedness condition on the sigmoidal function plays an essential role in the approximation, and conjectured that the boundedness of the sigmoidal function is a necessary and sufficient condition for the validity of the approximat...

ABSTRACT Active regions often show S-shaped structures in the corona called sigmoids. These are highly sheared and twisted loops formed along polarity inversion line. They considered to be one of best pre-eruption signatures for CMEs. Here, we investigate thermodynamic evolution an on-disc sigmoid observed during 2015 December 24–28. For this purpose, have employed Emission Measure (EM) filter-...

A formulation is proposed for true stress–true strain relationships in the plastic regime that exhibit sigmoidal shapes, such as those of certain metastable austenitic stainless steels (MASS). It contains two terms, broadly accounting contributions to hardening from conventional plasticity and mechanical stimulation martensite formation. a continuous function, designed cover range zero up sever...

This paper is concerned with a cyclic predator-prey system with Sigmoidal type functional response. By using the differential inequality theory, some sufficient conditions are derived for the permanence of the system. By constructing a suitable Liapunov function, we obtain that the system has a unique asymptotically periodic solution which is globally asymptotically stable. Some numerical simul...