This paper proposes a time-varying amplitude frequency monitoring method based on sliding window FFT of sub-synchronous oscillation to identify the time-varying modal parameters of the oscillating signals on-line.Firstly, windowed interpolation methods are used to reduce the spectral leakage and fence effect, and decrease the FFT identification err
Lin Feng,1,2 Xiaozhe Yang,1,2 Yanfeng Shi,1,2 Shuang Liang,1,2 Tong Zhao,1,2 Junchao Duan,1,2 Zhiwei Sun1,2 1Department ORG OLD FASHONED ROLLED OATS of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; 2Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Bei
South Africa has the highest tuberculosis (TB) disease incidence rate in the world, and TB is the leading infectious cause of death.Decisions on, and funding for, TB prevention and care policies are decentralised Accessories to the provincial governments and therefore, tools to inform policy need to operate at this level.We describe the use of a ma
Leather Care Goal: The paper aims to investigate the insights of the resilience mechanisms of Brazilian small farms facing COVID-19.Design / Methodology / Approach: The research path involves three cases studies: two small but relevant producers of fruit and vegetable and a cooperative of family farmers in Rio de Janeiro through semi-structured int