In this paper, we take the resting T cells into account and interpret the progression and regression of tumors by a predator-prey like tumor-immune system.First, we construct an appropriate Lyapunov function to prove the existence and uniqueness of the global positive solution to the system.Then, by utilizing the stochastic comparison theorem, we p
Abstract The purpose of this study was to determine the understanding and guidance that is suitable to be implemented in the norms of courtesy through Civics learning in Sunday school children at GBI Sukma Medan.The research method used is a descriptive qualitative method, data collection techniques using observation, interview and documentation te
Most communication systems suffer from signal distortions as a result of noise interference.These distortions have multiple effects on communication channels, including higher bit error rate (BER), reduced signal-to-noise ratio (SNR), and restricted channel capacity.It has been determined that impulsive noise is one of the most detrimental noise ty
Background: Co-occurrence of complex copy number variants (CNVs) is associated with more severe clinical expressivity of known syndromes.Few studies discuss diagnosis and genetic counseling for fetuses identified with multiple CNVs.This cohort study aims to summarize findings of complex copy number variants identified via prenatal diagnosis along w
The hydrodynamic information of liquid oxygen in the conveying pipeline of cryogenic launch vehicles directly determines the reliability of the operation of the turbopump.A 0.09 MPa anomalous pressure fall phenomenon in the feeding system has been observed during the flight and run test of a cryogenic rocket with four parallel engines.In previous w