Modeling gas flow directions as state variables: Does it provide more flexibility to power systems?

experimental investigation of power consumption, mass transfer coefficient and flow regime in gas-liquid dispersion systems

Alternative Authentication - What does it really Provide?

In recent years many new technologies and techniques have been developed for authenticating individuals attempting to access digital services. Some of these appear to offer new, innovative and flexible ways to improve security, potentially removing the need for relatively expensive hardware devices. We explore some the characteristics of these new methods in relation to the requirements of some...

What does it provide to patients that others do not?

Sir, I wish to add a few comments to the article " Prospective one-year treatment outcomes of tortured refugees: a psychiatric approach " by J David Kinzie et al., published in the latest issue of TORTURE. The article covers a worthwhile subject in need of attention. The theme is significant with regards to refugee community health and the development of resiliency in torture survivors. As the ...

State Estimation and Power Flow Analysis of Power Systems

State estimation and power flow analysis are important tools for analysis, operation and planning of a power system. In this paper, a new state estimation method based on the extended weighted least squares (WLS) method for considering both measurement errors and model inaccuracy is presented. Two bus, three bus, and IEEE 14 bus test cases are employed to evaluate the accuracy of the method. Th...

Neural modeling of dynamic systems with nonmeasurable state variables

The paper studies the ability possessed by recurrent neural networks to model dynamic systems when some relevant state variables are not measurable. Neural architectures based on virtual states—which naturally arise from a space state representation—are introduced and compared with the more traditional neural output error ones. Despite the evident potential model ability possessed by virtual st...