In this remtavares.com article, we analyse the impact of the introduction of options on an investment portfolio.Our first objective is to derive closed-form formulae for the standard measures of portfolio efficiency: risk premium, risk, Sharpe ratio, and beta, of any portfolio containing any combination of options.Using these formulae on three exam
Abstract Background Merkel cell carcinoma (MCC) is a rare but aggressive skin cancer with limited treatment possibilities.Merkel cell tumors display with neuroendocrine features and Merkel cell polyomavirus (MCPyV) infection in the majority (80%) of patients.Although loss of histone H3 lysine 27 trimethylation (H3K27me3) has been shown during MCC t
In this paper, an inhomogeneous human body model was presented to investigate the propagation characteristics when the human body was click here used as an antenna to achieve signal transmission.Specifically, the channel gain of four scenarios, namely, (1) both TX electrode and RX electrode were placed in the air, (2) TX electrode was attached on t
Under the requirement of clean production, a new type of slurry edgewater shoes blast device for mechanically removing oxide scale on the surface of steel strips is presented, which can avoid the serious problems of rapid wear, low service life, and low efficiency of the traditional abrasive water jet with a nozzle.In this paper, the numerical simu