in order to the study of the salinity effects on seed germination and effecting parameter of fennel (foeniculum vulgare) was conducted a factorial experiment in a completely randomized design with two factors and three replications. factor a was 10 ecotypes, including; sardasht, saghghez, kerman, tabriz,sabzevar, rome, khusf, bojnoord, mashhad and shabestar and factor b was five concentrations ...

BACKGROUND The prevalence of hypertension among children and adolescents is estimated to range between 1% and 13%. Excess weight and central obesity are related to blood pressure levels in adults, and may be important in the early pathogenesis of SH when present in childhood. OBJECTIVES To study the association between anthropometric variables and blood pressure levels in schoolchildren from ...

We present a robust model assessment method for neural-network models and demonstrate the approach for feedforward networks. In order to assess a neural-network model, the location of weight vectors after repeated learning experiments is analysed in the eeective weight space. We argue that appropriate or underdetermined models clearly show a cluster structure in the eeective weight space wherea...

This study examined longitudinal changes in physical activity, sedentary behavior and body mass index in adolescents, specifically their migrations towards a different weight cluster. A cohort of 755 adolescents participated in a three-year study. A clustering Self-Organized Maps Analysis was performed to visualize changes in subjects' characteristics between the first and second assessment, an...

Contrast enhancement of images is a crucial topic in image processing that improves the quality images. The methods are classified into three types, including histogram method, fuzzy logic and optimal method. Studies on often based rules: if it bright, then brighter; dark, darker, using global approach. Thus, hard to enhance objects all dark light areas, as satellite This study presents novel a...

A compact metric space $(X, \rho)$ is given. Let $\mu$ be a Borel measure on $X$. By $r$-cluster we mean a measurable subset of $X$ with diameter at most $r$. A family of $k$ $2r$-clusters is called a $r$-cluster structure of order $k$ if any two clusters from the family are separated by a distance at least $r$. By measure of a cluster structure we mean a sum of clusters measures from the clust...