A ship’s roll dynamics is sensitive to the mass and mass distribution. Changes in these physical properties might introduce unpredictable behavior of the ship and a worst-case scenario is that the ship will capsize. In this paper, a recently proposed approach for online estimation of mass and center of mass is validated using experimental data. The experiments were performed using a scale model...

hot rolling of a large ring of titanium alloy (lrt) is a highly nonlinear incremental forming process with coupled mechanical and thermal behaviors (mtbs) which significantly affect microstructure and properties of the ring. the feed rate of idle roll and the rotational speed of driver roll have major effects on ovality of the ring. in this paper, the effects of these parameters on the ovality ...

If the inflaton gets trapped in a local minimum of its potential shortly before end inflation, it escapes by building up quantum fluctuations process known as stochastic tunnelling. In this work we study cosmological produced such scenario, and how likely they are to form Primordial Black Holes (PBHs). This is done using stochastic-$\delta N$ formalism, which allows us reconstruct highly non-Ga...

The paper applies a Bayesian Markov Chain Monte Carlo estimation methodology to scale roll call votes in the 35 and 38 Canadian Parliaments over a multidimensional policy space. The results clearly demonstrate that policy debates are two-dimensional in Canada. The first dimension represents the classical division between the governing and the opposition parties that has been found in similar Pa...

Abstract In most practical applications, surface roughness is characterized by just one or two parameters (numbers). I show that the standard maximum height fluctuate strongly between different realizations (or measurements), and should not be used in design of engineering components. how some depend on size roll-off region power spectra, introduce a new parameter which very reproducible. The n...

In this article, we present a critical review of the swimming literature on body roll, for the purposes of summarizing and highlighting existing knowledge, identifying the gaps and limitations, and stimulating further research. The main research findings can be summarized as follows: swimmers roll their shoulders significantly more than their hips; swimmers increase hip roll but maintain should...

PRIMARY OBJECTIVE The purpose of this paper is to describe and discuss a significant secular trend in stature and weight in an urban Brazilian population. METHODOLOGY Anthropometric measurements of 7878 children and adolescents from São Paulo, Brazil, obtained in 1997/98 were compared with data from a previous study carried out in 1978. Both samples include children of middle-class urban fami...

OBJECTIVE A cross-sectional survey was conducted in order to determine whether an affluent population in south Delhi had a growth performance similar to that in developed countries and to identify socioeconomic factors that militated against optimal growth in this group. METHODS The weights and lengths of 395 children aged 12-23 months and the heights of 331 mothers and 153 grandmothers were ...