Search results for "model [interaction]"

Global sensitivity analysis in integrated water quality modelling: an application to a real case study

2012

The increasing sensitivity towards water quality environmental issues led to the setting up of water quality integrated modelling approaches and the definition of water quality criteria that better represent the receiving water body quality status. More specifically, compared to the past, the tendency today is to design and manage the whole integrated urban drainage system, i.e. , wastewater treatment plant and receiving water body (RWB) considering each component not separately but jointly. Despite the advantages of a holistic approach for the assessment of the RWB quality state there are some limits that may prevent a straightforward application. Indeed, integrated models are generally ch…

Parameter uncertainty analysis of water quality model for small river

2009

INTELLI 2013, The Second International Conference on Intelligent Systems and Applications

2013

The research of optimization techniques in the system of goods distribution from warehouses to final users (vehicle routing problem), made considerable savings on the total cost of transport and, consequently, on the final cost of goods, and produced the models applicable to other operating environments (e.g., transport for disabled people, school, municipal waste collection). The analysis conducted on the different models developed under the VRP highlights the support that these models can give on the infomobility of goods.

CFD simulations of dense solid–liquid suspensions in baffled stirred tanks: Prediction of the minimum impeller speed for complete suspension

2012

Abstract In the literature on mechanically agitated solid–liquid systems, several methods are described to estimate the minimum impeller speed Njs at which all particles are suspended, but few studies have been devoted so far to their critical comparative assessment [67] . In the present paper, several alternative Njs prediction methods are applied to CFD results obtained for selected test cases covering a broad range of suspension conditions and impeller speeds. Results are compared with one another and with classic empirical correlations [88] . The aim of the work is to assess the adequacy of different methods for predicting Njs and, more generally, to contribute to a viable CFD-based str…

M/EEG Forward Model Computation Via Source-Adaptive Meshless Solving

2014

Rateless Codes Performance Analysis in Correlated Channel Model for GEO Free Space Optics Downlinks

2012

MRAS Sensorless Techniques for High Performance Linear Induction Motor Drives.

2010

This paper proposes an MRAS (Model reference Adaptive System) speed observer suited for linear induction motors (LIM). Starting from the dynamical equation of the LIM in the synchronous reference frame in literature, the so-called voltage and current models of the LIM in the stationary reference frame, taking into consideration the end effects, have been deduced. These equations have been used respectively as reference and adaptive model of an MRAS observer. As machine under test, a complete dynamic model, based on the constructive elements of the LIM and taking into consideration the end effects by the definition of a proper air-gap function, has been adopted. This model has been previousl…

A Methodology for Graphical Modeling of Business Rules

2011

This work proposes a novel methodology based on the Business Process Modeling Notation (BPMN) standard capable of graphically modeling business rules. A set of new representation patterns allows business analysts to map processes described through BPMN into conditions and actions of business rules. Our approach exploits Domain Specific Language techniques in order to make the methodology independent from the programming language supported by the specific rule engine. Moreover, this work proposes a web graphical editor, instantiated on a specific sample scenario, where the selected rule engine is Drools, one of the most used open source products. The developed editor allows business analysts…

NUTRACEUTICALS IMPROVE EXPERIMENTAL COLITIS: PLACE OF CATECHINS IN THE 2,4,6-TRINITROBENZENE SULFONIC ACID MODEL RATS

2017

Background: Nutraceuticals provide added health benefits for inflammatory bowel disese (IBD) and Epigallocatechin-3-galate (EGCG), a green tea catechin, has been shown to possess such anti-inflammatory and anti-oxidant effects. Aim: To evaluate the molecular modulation of Reactive Oxygen Species (ROS), Tumor Necrosis Factor-alpha (TNF_alpha), nuclear factor Kappa Beta (NF-Kbeta), Interleukin 6 (IL-6) by EGCG on experimental colitis. Matherial and Methods: Thirthy five male sprague-dawley rats were randomly divided into 4 groups: Normal control group (n=5), EGCG group (n=9), TNBS group (n=9), and TNBS + EGCG group (n=12). For both TNBS and EGCG treated groups, 1 mg/Kg EGCG was administered d…

A Generalized Missing-Indicator Approach to Regression with Imputed Covariates

2011

We consider estimation of a linear regression model using data where some covariate values are missing but imputations are available to fill in the missing values. This situation generates a tradeoff between bias and precision when estimating the regression parameters of interest. Using only the subsample of complete observations does not cause bias but may imply a substantial loss of precision because the complete cases may be too few. On the other hand, filling in the missing values with imputations may cause bias. We provide the new Stata command gmi, which handles such tradeoff by using either model reduction or Bayesian model averaging techniques in the context of the generalized miss…