The paper deals with comparison of different continuous-time strategies applied to control of singleinput single-output (SISO) periodically time-varying systems with delay. The first method is based on the fractional representation in the ring of proper and stable rational functions (RPS), general solutions of Diophantine equations and conditions of divisibility while the other two methods use ...

The paper deals with the analysis of the two survival models of the accelerated failuretime using two-parametrical log-logistic and Weibull distributions, and survival models using conditional generalized Weibull, log-logistic, and Smith and Bain distributions. The observed survival (number of deaths during the 30-year follow-up period among the study cohort) and the survival predicted by regre...

We present a probabilistic interpretation of local sequence alignment methods where the alignment scoring system (ASS) plays the role of a stochastic process defining a probability distribution over all sequence pairs. An explicit algorithms is given to compute the probability of two sequences given and ASS. Based on this definition, a modified version of the Smith-Waterman local similarity sea...

A modified fermentation procedure based on one described by Homer Smith in his textbook was used to eliminate glucose interference in the automated detrmination of inulin. The manifold of Fjeldbo and Stamey [J. Lab. Clin. Med. 72, 353 (1968)] was modified to enable us to insert the fermentation procedure without sacrificing precision in continuous-flow analysis for inulin. Analytical recoveries...

The Goodwin oscillator is a simple yet instructive mathematical model, describing a wide range of self-controlled biological and biochemical processes, among which are selfinhibitory metabolic pathways and genetic circadian clocks that lead to important applications, such as the hormonal cycles modeling. Indeed, one of the first models of hormonal rhythm, squarely based on the conventional Good...

A new species of the stephanid genus Foenatopus Smith, Foenatopus weii sp. n., is described and illustrated from Yunnan Province, China. A modified section of the identification key to species of Foenatopus is added to include the new species. The male of Parastephanellus brevicoxalis Hong, van Achterberg & Xu, 2011 from Guangdong Province, China is also described and illustrated for the first ...