A computer program for advanced heart rate variability (HRV) analysis is presented. The program calculates all the commonly used time- and frequency-domain measures of HRV as well as the nonlinear Poincaré plot. In frequency-domain analysis parametric and nonparametric spectrum estimates are calculated. The program generates an informative printable report sheet which can be exported to various...

Suburban sprawl is one of the most avidly followed urban issues in the United States today. However, despite the level of attention that is afforded sprawl, their remains relatively little understanding of its determinants and its constitution. Previous attempts to measure sprawl have focused largely on costing out its impacts rather than quantifying its characteristics. Also, the characterizat...

© 2010 GSTF DOI: 10.5176_2010-2283_1.1.24 Abstract—The Advanced Encryption Standard (AES), the block cipher ratified as a standard by National Institute of Standards and Technology of the United States (NIST), was chosen using a process markedly more open and transparent than its predecessor, the aging Data Encryption Standard (DES). Fifteen algorithm were submitted as to NIST in 1998 , NIST ch...

Due to the importance of energy consumption in a steam network of oil refinery as a significant unit, present study is concerned with the optimization of an oil refinery steam network. Here, the attempt was made to use concepts such as first and second thermodynamic laws, thermo-economic, environmental and economic discussions to investigate three different scenarios about Tehran refinery steam...

One of the challenging issues that has always attracted attention experts is how to control and reduce greenhouse gas emissions because their overwhelming negative environmental impacts. Although burning hazardous gaseous products in flare systems boosts safety oil fields diminishes internal pressure extraction systems, it a catastrophic impact on surrounding environment. In this study, new sys...

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