|We reduce stability robustness analysis for linear, time-invariant, discrete-time systems to a search problem and attack the problem using genetic algorithms. We describe the problem framework and the modi cations that needed to be made to the canonical genetic algorithm for successful application to robustness analysis. Our results show that genetic algorithms can successfully test a su cient...

The persistence of biological systems requires evolved mechanisms which promote stability. Cohesive primate social groups are one example of stable biological systems, which persist in spite of regular conflict. We suggest that genetic relatedness and its associated kinship structure are a potential source of stability in primate social groups as kinship structure is an important organizing pri...

Genotypic instability is commonly observed in plants derived from tissue culture and is at least partly due to in vitro-induced stress. In this work, the issues of whether genetic instability induced by in vitro stress varies among families and if genetic instability influences the adaptation to in vitro conditions and embryo development have been addressed. By comparing the stability of four v...

Genetic stability of Morus alba, Morus indica, Morus laevigata (indigenous collection) and Morus species (exotic collection) have been studied in in vitro regenerated plants of mulberry (fresh, before and after cryopreservation) using random amplified polymorphic DNA (RAPD) and inter simple sequence repeat (ISSR) markers. This study examined the genetic stability of cryopreserved dormant buds o...

Negative feedback genetic circuits (NFGC) are key regulatory motif of cellular robustness with the capability of reducing noise in genetic interaction network. NFGC have the same control theory frame as negative feedback amplifier circuits (NFAC). NFAC can enhance gain stability and output signal-to-noise ratio (OSNR) of output signal (voltage). Whether NFGC possess these two advantages or not ...

A genetically informed cross-lagged model was applied to twin data to explore etiological links between autistic-like traits and affective problems in early childhood. The sample comprised 310 same-sex twin pairs (143 monozygotic and 167 dizygotic; 53 % male). Autistic-like traits and affective problems were assessed at ages 2 and 3 using parent ratings. Both constructs were related within and ...

INTRODUCTION Current approaches to understanding the progression of Pierce’s disease are limited by the lack of genetic techniques that can be used to study the biology of Xylella fastidiosa (Xf). In particular, extrachromosomal elements, such as plasmids, having long-term stability in Xf when grown in lab cultures or en planta, have not yet been satisfactorily developed. We will develop vector...

In this paper, we consider the control of time delay system by Proportional-Integral (PI) controller. By Using the HermiteBiehler theorem, which is applicable to quasi-polynomials, we seek a stability region of the controller for first order delay systems. The essence of this work resides in the extension of this approach to second order delay system, in the determination of its stability regio...