We present and prove closed form expressions for some families of binomial determinants with signed Kronecker deltas that are located along an arbitrary diagonal in the corresponding matrix. They count cyclically symmetric rhombus tilings hexagonal regions triangular holes. extend a previous systematic study these families, where locations depended on additional parameter, to negative deltas. B...

In previous papers of this series the temperature-dependent Raman spectra of poly(dA).poly(dT) and poly(dA-dT).poly(dA-dT) were used to characterize structurally the melting and premelting transitions in DNAs containing consecutive A.T and alternating A.T/T.A base pairs. Here, we describe procedures for obtaining thermodynamic parameters from the Raman data. The method exploits base-specific an...

Introduction: Several lines of evidence (e.g. drainage networks, outflow channels, evaporites), including the well-documented record of several and diverse delta-like deposits [1-11], imply the occurrence on ancient Mars of environmental conditions supportive of relatively persistent hydrological activity. However, it is still unclear whether the water history of the planet was predominantly ch...

We first develop an efficient algorithm to compute Deltas of interest rate derivatives for a number of standard market models. The computational complexity of the algorithms is shown to be proportional to the number of rates times the number of factors per step. We then show how to extend the method to efficiently compute Vegas in those market models.

world's coastlines are the most dynamic natural environments and diverse extraordinary and unique processes are active in this area. one of results of these processes is the formation and evolution of alluvial fans and delta. the studied areas include hormoz strait coastal, shour, jalaby and hassan-langi river delta which in the form of a strip with a varying width covers the areas from th...

In an earlier paper we introduced Lévy base correlation. In this paper we compare the Gaussian copula and Lévy base correlation models. The results of a historical study of both models on the iTraxx Europe Main dataset are presented. We focus on the base correlation surface and on the deltas of the tranches with respect to the index.

The partition coefficients (Kps) of phenothiazine drugs (trifluoperazine, triflupromazine, chlorpromazine and promazine) between phosphatidylcholine (PC) small unilamellar vesicles (SUV) and water were determined over the temperature range of 10-40 degrees C by a second-derivative spectrophotometric method. The second derivative spectra of each drug solution containing various amounts of SUV sh...