In this paper, an artificial pollution test is carried out to study the leakage current of porcelain insulators. Fractal theory is adopted to extract the characteristics hidden in leakage current waveforms. Fractal dimensions of the leakage current for the security, forecast and danger zones are...

Levy processes have gained great success in pricing single asset options. In this thesis, we introduce a methodology enabling us to extend the single asset pricing technique based on Levyprocesses to multiasset cases.In our method, we assume the log-return of each asset as a linear sum of...

Rapid urbanization and industrialization lead to high emissions and accumulation of halogenated flame retardants (HFRs), which seriously stress the health of the eco-environment. To explore the impacts of urbanization and industrialization on the occurrence and health risks of HFRs, the...

The effects of calcium ions (Ca2+) on anionic polyacrylamide (APAM) fouling of ion-exchange membranes (IEMs) in polymer-flooding wastewater (PFW) treatment by electrodialysis were systematically investigated by associating the desalination performance and physicochemical and electrochemical...

We examine the effect of debt financing capacity on firm innovation by employing a shock that increases firms' asset pledgeability. We find that firms increase innovation activities after the shock, and the increase is greater in regions with more effective enforcement and in firms with more...