the main idea of this paper is to study the dependence between the probability of default and the recovery rate on credit portfolio and to seek empirically this relationship. we examine the dependence between pd and rr by theoretical approach. for the empirically methodology, we use the bootstrapped quantile regression and the simultaneous quantile regression. these methods allow to determinate...

varian cystadenofibromas are uncommon epithelial ovarian tumors in which fibrous stroma is the dominant component of the neoplasm, in addition to the epithelial lining of the cystic tumor. These tumors are classified, according to the epithe-lial cell types, into the serous, endometrioid, mucinous, clear cell and mixed categories. The degree of epithelial proliferation and its relation to the s...

Common bean is globally the most important leguminous crop for direct human consumption. In Tanzania, it inter-cropped especially with maize. Characterization of common beans genetic improvement and ex-situ germplasm conservation since allows identification awareness key features genotypes. The grown in Tanzania are different seed colours such as red, red mottled, grey, white, yellow, brown etc...

mathematics curriculum in schools is always a key position and is considered as an essential knowledge. so it is taught in the first years of school curriculum. this knowledge has focused on calculating the initial period. so this part of mathematics play an important role in lives of all people so this knowledge is essential for learning today. in the early years of primary school children, th...

We introduce the notion of uniform number of a graph. The  uniform number of a connected graph $G$ is the least cardinality of a nonempty subset $M$ of the vertex set of $G$ for which the function $f_M: M^crightarrow mathcal{P}(X) - {emptyset}$ defined as $f_M(x) = {D(x, y): y in M}$ is a constant function, where $D(x, y)$ is the detour distance between $x$ and $y$ in $G$ and $mathcal{P}(X)$ ...

Abstract— Fossil fruits of Symplocos (Ericales: Symplocaceae) are here recognized from the Pliocene Guasca, Colombia, based on specimens formerly attributed to Cordia (Cordiaceae, Boraginales). vera (Berry) comb. nov. is represented by 19 lignitized fruits. The fossils as belonging primarily their woody endocarps that apically truncate and possess 3 5 apical germination pores locules, a central...