The objective of the study was to evaluate the distribution of methotrexate (MTX) in cerebrospinal fluid (CSF) lateral ventricles and in cisterna magna after 3rd intraventricular CSF administration in a rabbit model. MTX or gadolinium chelate (Gd-DOTA) was administered in the 3rd ventricle with a local microdialysis to study the pharmacokinetics at the site of administration and with a simultan...

a nonstandard finite difference (nsfd) scheme has been constructed and analyzed for a mathematical model that describes lotka–volterra food web model. this new discrete system has the same stability properties as the continuous model and,on the whole, it preservesthe same local asymptotic stability properties. linearized stability theory and schur–cohn criteria are used for local asymptoticstab...

In this paper, the problem of laminar nanofluid flow which results from the nonlinear stretching of a flat sheet is investigated numerically. In this paper, a modified variable physical properties model for analyzing nanofluids flow and heat transfer is introduced. In this model, the effective viscosity, density, and thermal conductivity of the solid-liquid mixture (nanofluids) which are common...

the aim of this study was to determine the interactional effects of various video shows (skilled and self-model) and feedback type on performance and learning of dart throwing skill. 90 volunteers were randomly divided into 6 groups including self-control, experimenter control and yoked feedback that received either skilled model or self-model. three groups who watched the skilled model observe...

A multivariate regression analysis shows that per capita expenditure has a negative effect on fertility, but large changes in per capita expenditure are needed to generate a substantial impact on the expected number of children per woman. Also women’s educational attainment is estimated to decrease fertility, both in rural and urban areas, particularly after schooling reaches the secondary leve...

BACKGROUND Local aortic pulse wave velocity (PWV) is a measure for vascular stiffness and has a predictive value for cardiovascular events. Ultra high field CMR scanners allow the quantification of local PWV in mice, however these systems are yet unable to monitor the distribution of local elasticities. METHODS In the present study we provide a new accelerated method to quantify local aortic ...

(a) acquisition (b) clustering (c) refinement Figure 1. Segmentation pipeline. (a) In this simulated LIDAR setup, the frustum represents a scanner projecting a beam onto a 3D model. The beam strikes the nearest surface and measures the distance, rendered here in false color. (b) Similarity based on local plane fitting drives a hierarchical clustering process. (c) Planar components are refined a...

This paper presents an approach to formalize the influence of culture on the decision functions of agents in social simulations. The key components are (a) a definition of the domain of study in the form of a decision model, (b) knowledge acquisition based on a dimensional theory of culture, resulting in expert validated computational models of the influence of single dimensions (c) a technique...

Utilizing parametric and nonparametric techniques, we assess the role of a heretofore relatively unexplored ‘input’ in the educational process, homework, on academic achievement. Our results indicate that homework is an important determinant of student test scores. Relative to more standard spending related measures, extra homework has a larger and more significant impact on test scores. Howeve...

Data-acquisition involves gathering signals from measurement sources and digitizing the signal for storage, analysis and presentation on a PC. Analysis and prediction is very necessary in today’s market for the accurate utilization of funds at hand. For analysis, there has to a proper system where in the required data is first acquired from the destination. This data then needs to be analysed u...