The wheel and rail interaction is the main influence on the dynamic response of a rail vehicle. Any changes in the wheel and rail will change the overall response of the vehicle. The condition monitoring challenge is to interpret these changes into useful condition information. This paper presents the results from initial feasibility studies into model-based condition monitoring at the wheel-ra...

The dynamics of a railway vehicle are driven by the geometry and conditions at the wheel-rail contact. Typically the condition and shape of the wheel and rail are monitored separately and off-line. The work presented here is part of ongoing research into on-line modelbased estimation of parameters in the wheel-rail contact dynamics. This paper outlines a practical approach to estimating a nonli...

The Brazil, as well the world, is in a transition process, with changes nutritional, epidemiological and lifestyle profiles. At same time, progressive increase life expectancy growth of chronic non-communicable diseases (NCDs) have been observed recent decades. Among them are cardiovascular whose main risk factor obesity. In this scenario, anthropometric indicators essential for early identific...

OBJECTIVES (1) To examine the validity of existing prediction equations (PREE) for estimating resting energy expenditure (REE) in obese Chinese children, (2) to correlate the measured REE (MREE) with anthropometric and biochemical parameters and (3) to derive a new PREE for local use. DESIGN Cross-sectional study. SUBJECTS 100 obese children (71 boys) were studied. MEASUREMENTS All subjec...

In order to prevent unpleasant incidents, preservation high-speed railway vehicle stability has vital importance. For this purpose, railway vehicle is modeled using a 38-DOF. This paper presents an investigation on limit cycle and bifurcation of high speed railway behavior. It is revealed that the critical hunting speed decreases by increasing the wheel conicity. Also the critical hunting speed...

O estudo clínico das diferentes patologias e doenças humanas é complexo, porque a influência de vários fatores, por vezes com relações interdependentes, se conjugam entre si. Assim, e para se poderem estabelecer relações causais, são necessários estudos bem delineados e poderosas ferramentas analíticas. Os ensaios clínicos aleatorizados, controlados, têm sido considerados como evidência de níve...

OBJECTIVE To investigate the agreement in evaluation of risk of developing cardiovascular diseases based on anthropometric parameters in young adults. METHODS The study included 406 students, measuring weight, height, and waist and neck circumferences. Waist-to-height ratio and the conicity index. The kappa coefficient was used to assess agreement in risk classification for cardiovascular dis...