We introduce a novel iterative approach for event coreference resolution that gradually builds event clusters by exploiting inter-dependencies among event mentions within the same chain as well as across event chains. Among event mentions in the same chain, we distinguish withinand cross-document event coreference links by using two distinct pairwise classifiers, trained separately to capture d...

A brief introduction to the technique of Monte Carlo for simulation of statistical physics problems is presented. Ising spin model is taken as an example. The topics covered include random and pseudo random numbers, random sampling techniques, Markov chain, Metropolis algorithm, continuous phase transition, statistical errors from correlated and uncorrelated data, finite size scaling, critical ...

We investigate two examples of node-based cluster summation rules that have been proposed for the quasicontinuum (QC) method: a force-based approach and an energy-based approach which is a generalization of the nonlocal QC method. We show that, even for the case of nearest-neighbor interaction in a one-dimensional periodic chain, both of these approaches create large errors that cannot be remov...

Motivated by the computational difficulty of analyzing very large Markov chains, we define a notion of clusters in (not necessarily reversible) Markov chains, and explore the possibility of analyzing a cluster “in vitro,” without regard to the remainder of the chain. We estimate the stationary probabilities of the states in the cluster using only transition information for these states, and bou...

Phylogenetic relationships and genetic variation between two Iranian sheep breeds were analyzed using cytochrome b (cyt-b) gene sequences. The genomic DNA was isolated by salting out method and amplified cytochrome b gene using polymerase chain reaction restriction (PCR) method with a pair of primer. A partial sequence of cyt-b gene of Iranian sheep is 780 bp and contained 13 variable sites and...

The assembly-line synthases that produce bacterial polyketide natural products follow a modular paradigm in which each round of chain extension is catalysed by a different set or module of enzymes. Examples of deviation from this paradigm, in which a module catalyses either multiple extensions or none are of interest from both a mechanistic and an evolutionary viewpoint. We present evidence tha...

The theoretical investigation of the electronic structure of the fullerene cluster solid predicts that in the high frequency region the optical response of the chain and layered cluster structures has the polariton phenomena like in the insulator solid. The dispersion of the dipole collective modes in 1D and 2D systems is presented. The analogy between these fullerene excitations and the low-di...

Genes encoding the T cell alloantigens Tpre, Tthy, Tind, and Tsu have been mapped to a short segment of chromosome 12 using Igh recombinant strains of mice. These loci are located in a tightly linked cluster between the immunoglobulin heavy chain constant region gene cluster, Igh-C, and the serum prealbumin locus Pre-1, in this manner: centromere--Igh-C--(Tthy, Tind)-Tsu-Tpre--Pre-1.

In the present study, Randomly Amplified Polymorphic DNA (RAPD) markers were used to analyze the genetic diversity in 20 varieties of Philodendron. The polymerase chain reaction was performed with 60 RAPD primers, out of which 21 primers showed clear amplification as well as more polymorphism. In total, 354 scorable RAPD loci with 348 polymorphic bands (98%) were observed. Percentages of polymo...

Formation of quantum scars in many-body systems provides a novel mechanism for enhancing coherence weakly entangled states. At the same time, edge modes certain symmetry-protected topological (SPT) phases can persist away from ground state. In this work we show existence and their implications on bulk such an SPT phase. To end, study eigenstate properties dynamics interacting spin-$1/2$ chain w...