The expected numbers of different categories of polymorphic sites are derived for two related models of population history the isolation model, in which an ancestral population splits into two descendents, and the size-change model, in which a single population undergoes an instantaneous change in size. For the isolation model, the observed numbers of shared, fixed, and exclusive polymorphic si...

As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath queries using materialized XPath views. This problem is very important and arises not only from query optimization in server side but also from semantic caching in client side. We consider the problem of deciding whet...

Fibromyalgia is a clinical construct that has been developed, for the most part, by rheumatologists. It is a direct descendent of "fibrositis", a common misnomer (1) that was first coined in 1904 (2). There are always problems inherent in defining a disorder in purely descriptive terms. Nevertheless the publication of the American College of Rheumatology's 1990 Classification Criteria for fibro...

Since its detection in December of 2020, the SARS-CoV2 lineage P.1, descendent B.1.1.28 lineage, has been identified several places Brazil and abroad. This Variant Concern was considered highly prevalent Northern now is rapidly widening geographical range. Here, we present epidemiological genomic information first case P1 Rio Grande do Sul state, a patient with no reported travel history tracke...

It is often impossible to sequence all descendent genomes to reconstruct an ancestral genome. In addition, more genomes do not necessarily give a higher accuracy for the reconstruction of ancestral character states. These facts lead to studying the genome selection for reconstruction problem. In this work, two greedy algorithms for this problem are proposed and tested on computer simulation dat...

We propose appearance of Exceptional Point (EP) in a real parameter space, in a novel type of Hermitian model. This is possible because the constraint structure changes discontinuously at the EP leading to a coalescence of a full tower of quantum (Harmonic Oscillator) states. We also find interesting consequences of complexifying the parameter space. We show that this model is a descendent of a...

These introductory lecture notes describe recent results on novel Mott insulating phases which are “descendents” of superconductors – obtained by “quantum disordering”. After a brief overview of quantum magnetism, attention is focussed on the spin – liquid phase of the two-leg Hubbard ladder and the nodal liquid – a descendent of the dx2−y2 superconductor. These notes are self-contained and an ...

Evolutionary relationships among species are often assumed to be fundamentally unambiguous, where genes within a genome are thought to evolve in concert and phylogenetic incongruence between individual orthologs is attributed to idiosyncrasies in their evolution. We have identified substantial incongruence between the phylogenies of orthologous genes in Escherichia, Salmonella, and Citrobacter,...