Template protection plays a crucial role in protecting the privacy of biometric data, by providing irreversibility and unlinkability. The Glass Maze, as presented by Trugenberger at BIOSIG 2011, is a fingerprint key binding mechanism that is claimed to provide template protection. With the correct fingerprint, the key that is entangled with the fingerprint data can be retrieved. The template pr...

Spark-ignition engines exhibit patterns of increasing instability as engine fueling goes from stoichiometric to lean. The observation of time irreversibility in cycleresolved combustion measurements indicates that this combustion instability is inherently nonlinear. Using time return maps and symbolic time-series analysis, we demonstrate the presence of strong time irreversibility in experiment...

Time irreversibility, a fundamental property of nonequilibrium systems, should be of importance in assessing the status of physiological processes that operate over a wide range of scales. However, measurement of this property in living systems has been limited. We provide a computational method derived from basic physics assumptions to quantify time asymmetry over multiple scales and apply it ...

To analyze the performance of the separation process, we have introduced the thermodynamic concept of exergy through the exergetic efficiency of the column. The simulation results show that the exergetic output is relatively low and that the produced irreversibility fluxes are distributed throughout the whole column in a non-uniform manner. They are particularly significant in the condenser, bo...

One of the important problems of high-temperature superconductivity is to understand and ultimately to control uxoid motion. Here we present data on the pressure dependence of the irreversibility line measured up to 2.5 GPa. We observe that the application of pressure changes the interplanar coupling by decreasing the c-axis length, without signi cantly disturbing the intraplanar superconductiv...

In the real solar tower thermal power system, it is widely acknowledged that the thermodynamic irreversibility, such as convective and radiative loss on tower receiver, and thermal resistance in heat exchangers, is unavoidable. With above factors in mind, this paper presents an ideal model of the solar tower thermal power system to analyze the influence of various parameters on thermal and exer...

Irreversibility is introduced to quantum graphs by coupling the graphs to a bath of harmonic oscillators. The interaction which is linear in the harmonic oscillator amplitudes is localized at the vertices. It is shown that for sufficiently strong coupling, the spectrum of the system admits a new continuum mode which exists even if the graph is compact, and a single harmonic oscillator is couple...

The idea of perturbation independent decay (PID) has appeared in the context of survival-probability studies, and lately has emerged in the context of quantum irreversibility studies. In both cases the PID reflects the Lyapunov instability of the underlying semiclassical dynamics, and it can be distinguished from the Wigner-type decay that holds in the perturbative regime. The theory of the sur...

Effective energy utilization and its management for minimizing irreversibility has made human to look for efficient energy consumption & conversion. Based on several research activity and local power plant experience some key observation has made and is presented in this paper The aim of this paper is to be find out amount and source of irreversibility’s generated in boiler of 35 TPH boiler in ...

Effective energy utilization and its management for minimizing irreversibility has made human to look for efficient energy consumption & conversion. Based on several research activity and local power plant experience some key observation has made and is presented in this paper The aim of this paper is to be find out amount and source of irreversibility’s generated in boiler of 35 TPH boiler in ...