The purpose of this research study is to theoretically investigate the sustainability, the managerial conduct of management and the internal control systems evident in South African small, medium and micro enterprises (SMMEs).To achieve the aforementioned, a literature review was conducted through analyzing relevant secondary data from journal arti

The regular inspection of underground facilities such as pipelines is absolutely essential.Pipeline leakage caused by corrosion and deformation must be detected in time, otherwise, it may cause fatal disasters for human beings.In our previous research, a robot chain system (RCS) based on visible light relay communication (VLRC) for pipe inspection

DFB lasers with ultrashort cavities or integrated DFB lasers with passive waveguide reflectors are frequently proposed to realize directly modulated lasers (DMLs) for carrying ultrahigh data rate signals.The former Rear Parking Sensor Kit suffers from poor heatsink and laser cleavage yield, while the single-mode stability of the latter scheme is se