Chaotic inflation is inconsistent with the observational constraint at 68% CL. Here, we show that enhancement mechanism a peak function in noncanonical kinetic term not only helps chaotic model V(?) = V0?1/3 satisfy large scales but also enhances primordial scalar power spectrum by seven orders of magnitude small scales. The enhanced curvature perturbations can produce black holes different mas...

A classical problem in power systems is to allocate in-coming (elastic or inelastic) demands without violating the operating constraints of electric networks in an online fashion. Although online decision problems have been well-studied in the literature, a unique challenge arising in power systems is the presence of non-linear constraints, a departure from the traditional settings. A particula...

CO2-Plume Geothermal (CPG) technologies are geothermal power systems that use geologically stored CO2 as the subsurface heat extraction fluid to generate renewable energy. CPG can support variable wind and solar energy by providing dispatchable power, while Flexible (CPG-F) facilities provide storage, or both simultaneously. We present first study investigating how plants CPG-F may operate part...

In this paper we investigate the sub-channel assignment and power control to maximize the total sum rate in the uplink of two-cell network. It is assumed that there are some sub-channels in each cell which should be allocated among some users. Also, each user is subjected to a power constraint. The underlying problem is a non-convex mixed integer non-linear optimization problem which does not h...

in this paper, we consider a cooperative cognitive radio network in which there is an ofdm primary link and multiple single carrier secondary links.the primary link is required to maintain its secrecy rate above a predefined threshold. if the secrecy rate requirement is not satisfied, the secondary system help primary link to maintain its secrecy rate requirement. in doing so, the secondary trans...