Portfolio weights solely based on risk avoid estimation errors from the sample mean, but they are still affected from the misspecification in the sample covariance matrix.To solve this problem, we shrink the covariance matrix towards the Identity, the Variance Identity, the Single-index model, the Common Covariance, the Constant Correlation, and th
In this work, we investigate the application of the plasma shutters for heavy ion acceleration driven by a high-intensity laser pulse.We use particle-in-cell and hydrodynamic simulations.The laser pulse, transmitted through the opaque Pentair SunTouch shutter, gains a steep-rising front and its peak intensity is locally increased at the cost of los
This study employs deep learning and artificial intelligence (AI) clustering analysis techniques to evaluate the suitability of integrated rural land for three industries.Diverse datasets pertaining to rural development, encompassing land use, agricultural production, and rural tourism, are gathered and harmoniously amalgamated.An innovative land s
Tomato mosaic virus (ToMV) is one of the economically damageable Tobamovirus infecting the tomato in Egypt that has caused significant losses.It is therefore of great interest to trigger systemic resistance to ToMV.In this endeavor, we aimed to explore the capacity of ZnO-NPs (zinc oxide nanoparticles) to trigger tomato plant resistance against ToM
Telecare medical information systems (TMIS) allow patients remotely login Cutlery Basket medical service providers to acquire their medical information and track their health status through unsecured public networks.Hence, the privacy of patients is vulnerable to various types of security threats and attacks, such as the leakage of medical records