We propose an estimator for the conditional density p(Y |X) that can adapt for asymmetric heavy tails which might depend on X. Such estimators have important applications in nance and insurance. We draw from Extreme Value Theory the tools to build a hybrid unimodal density having a parameter controlling the heaviness of the upper tail. This hybrid is a Gaussian whose upper tail has been replace...

In France more than 25 million pigs were slaughtered in 2007. Most of the pigs are a three-breed cross with Pietrain boars or synthetic sire lines mated to crossbred sows (mainly Large White cross Landrace). The classification of pig carcases is based on one or two fat depth and one muscle depth measurements to estimate the total lean meat percentage of the four main cuts. More than 90% of carc...

The program (crawler) which collects the graph starts at a popular book. It then traverses the co-purchase network using a depth-first search. Intuitively, in a depth-first search, one starts at the root (in our case, the one popular book chosen) and traverses the graph as far as possible along each branch before backtracking. At each page, the crawler gathers and records information for the bo...

* Correspondence: wangjun@bjtu. edu.cn Department of Mathematics, Key Laboratory of Communication and Information System, Beijing Jiaotong University, 100044 Beijing, P.R. China Abstract Price formation in financial markets based on the 2D stochastic Ising-like spin model is proposed, with a randomized inverse temperature of each trading day. The statistical behaviors of returns of this financi...

Downfall flows from different outlet hydraulic structures such as culverts and jetsthrowingtothe erodible downstream bed cause scour hole and changes in the downstream bed topography. Therefore,by performing some physical modeling tests on culvert jet flow under different angles, changes in the downstream bed topography under the effect of different parameters such as flow rate, depth of the ta...

Background: Mammalian spermatozoa are characterized by a high proportion of polyunsaturated fatty acids (PUFA) and the membrane structure of spermatozoa plays a crucial role in fertilization. Moreover, dietary fatty acid (FA) influence sperm FA profiles in several species. This study focused on responses to dietary omega-3 fatty acids and comprehensive fatty acid profiles analysis in men as wel...