Variable-density groundwater flow models are often used to understand the complex nature of coastal groundwater systems. Hydrodynamic dispersion is a difficult process to represent with a model because of spatially varying hydraulic conductivity and temporally varying hydrologic boundary conditions. Temporal variations in water levels, for example, that occur in the field are often averaged int...

Complementary approaches examined the relations among executive self, self-esteem, and negative affectivity. A cross-sectional (N 4,242) and a longitudinal (N 158) study established that self-esteem mediated the relation between executive self and negative affectivity. A 3rd study (N 878 twin pairs) replicated this pattern and examined genetic and environmental influences underlying all 3 pheno...

Annually between 1994 and 1998 over 400,000 acres of grain sorghum have been harvested in Missouri with an average yield of 86/bushels/acre. The average value of production during this period was over $90 million. Grain sorghum (milo) is an important crop for some Missouri producers. Many sorghum producers also produce corn, soybean, or wheat. Each of these commodities has an actively traded fu...

Background: Person-centred cultures have the capacity to make a significant difference in the care experiences of patients and staff. Contextual factors pose the greatest challenge to person-centredness and to the development of cultures that can sustain person-centred care, especially in the acute hospital setting. Aim of the study: To assess person-centred practice in acute hospital settings....

aims: considering the medical significance of cockroaches as insect vectors of food toxicities, and triggering allergy in respiratory system and skin, this survey was conducted to study the frequency of infestation and their effective factors in shahin shahr, iran. materials & methods: this cross-sectional descriptive study was carried out in 2010 in shahin shahr, isfahan, iran. data gathering ...

on the basis of a cross-sectional demographic survey that was conducted among the qashqai tribe of southern iran in 1973, the crude birth rate was estimated at 48.2 per thousand per year. the most productive age groups, was 25-29 years. forty-nine, point seven per cent (49.7%) or about one half of the total births occurred among married women aged 20 to 29 years eighty-seven point three per cen...

background: although there are efforts being underway to control and prevent intestinal parasitic infections (ipis) in ethiopia, they are still endemic and responsible for significant morbidity. the aim of this study was to evaluate the prevalence of ipis and their association with nutritional status among primary school children of delo-mena district, south eastern ethiopia. methods: a cross-s...

introduction: infertility is a major problem in today´s medicine. infertility is known a health indicator and the right to infertility treatment is part of millennium development goal. the present study aimed to determine the risk factors of infertility, in women referred to both public and private health centers in ilam. materials and methods: a cross-sectional study was carried out among wome...

We propose a general equilibrium model with multiple assets able to match both the time series and the cross-sectional predictability of stock returns. The cross section of average returns is determined by both cash-flow risk and discount risk. We show that if cross-sectional differences in average returns are mainly determined by discount risk, then a counterfactual prediction obtains: Assets ...