On the deformations in a viscoelastic substance (Fener type) permeated by a magnetic field

Summary Proceeding from the equations of electromagnetism (Maxwell) and those of mechanical motions, this investigation has been carried in a layered media, comprising of a liquid and a solid (Fener type) layers to determine the mechanical deformation. It is found that the disturbances owing to the coupling effect of the transversely acting magnetic field and the tangential force along the inference, are predominantly transient in character for both ranges of time, but being damped more in case of larger values.     

On disturbances in an elastic medium in contact with a liquid medium and subjected to a magnetic field

Summary The present note makes use of electromagnetic equations of Maxwell and those of mechanical motions to work out the problem of disturbances in two perfectly conductive media—an ideal liquid and a perfectly elastic solid-acted upon by a magnetic field perpendicular to their plane of contact. The displacement suffered by solid medium has been determined when a tangential force, exponentially decaying with time, acts in the plane of contact of the two media. The solution of the problem is achieved by using the method of Laplace transform.     

Solar neutrino and solar particles

Examination of the most recent data on solar neutrino shows that there is a statistically significant relationship between solar neutrino and solar particles.     

The rationalization of neoliberalism in Ontario's public education system, 1995-2000

The globalization of neo-liberal policy solutions to education problems has gained increasing dominance in recent years. In Ontario, Canada the success of this ideological discourse, particularly during the past decade, has been hard to combat due to the ideal message that it conveys to the general electorate, that is one based on efficiency, accountability and equity of resources across different school boards in the province. Despite protests from many activist groups (i.e. unions, educators, parent-groups) the implementation of such policies has been largely successful. By tracking education policies, statements and events, newspaper articles and other policy reports from 1995 to 2000, this paper seeks to understand the nature of its success during the early years of restructuring. I argue that part of the success lies in understanding the techniques and strategies of implementation or the process of rationalization. I argue that policies formulated at one spatial level operate quite differently at another and the spatial disjunctures that arise as a result of this process lead to the continued success of neo-liberal ideologies and inequalities in education.     

Prediction of inversion strengths and heights from A 1-D nocturnal boundary layer model

A 1-D numerical model for the nocturnal boundary layer is developed which is capable of predicting inversion heights and strengths successfully. The model uses two distinct length scales for the dissipation of turbulent energy and for transfer of heat and momentum within the Planetary Boundary Layer (PBL). The wind and potential temperature profiles obtained from the present model are compared with observations and the agreement is found to be good, viz., the RMSE for inversion height is found to be 71 m and that for inversion strength is found to be 2.0 °C.     

Variation of coastal atmospheric boundary layer characteristics with convective activity along the west coast of India during the Arabian Sea Monsoon Experiment (ARMEX) 2002

This paper investigates the characteristic features of the coastal atmospheric boundary layer (CABL) along the west coast of India during the south-west monsoon (SWM) 2002. Extensive surface and upper-air findings were obtained during the same period from the Arabian Sea Monsoon Experiment (ARMEX; 15th June to 15th August 2002) 2002. The operational general circulation model (GCM) of the National Centre for Medium Range Weather Forecasting (NCMRWF) was used in this study to see the spatial variation of the CABL during two specific convective episodes that led to heavy rainfall along the west coast of India. The impact of a non-local closure (NLC) scheme employed in the NCMRWF GCM was carried out in simulating the CABL. The same episodes were also simulated using a similar parameterization scheme employed in the high resolution mesoscale modelling system (MM5). The diurnal variation of CABL is better represented from MM5 simulation. Comparing the MM5 simulation with that of the coarser grid NCMRWF GCM, we observed that the NCMRWF GCM underestimates the values of both latent heat flux (LHF) and the coastal atmospheric boundary layer height (CABLH). Results from MM5 therefore indicate that the best way to move forward in addressing the short-comings of coarse grid-scale GCMs is to provide a parameterization of the diurnal effects associated with convection processes.     

Wavelet‐based non‐stationary response analysis of a friction base‐isolated structure

A wavelet‐based stochastic formulation has been presented in this paper for the seismic analysis of a base‐isolated structural system which is modelled as a two‐degree‐of‐freedom (2‐DOF) system. The ground motion has been modelled as a non‐stationary process (both in amplitude and frequency) by using modified Littlewood–Paley basis wavelets. The proposed formulation is based on replacing the non‐linear system by an equivalent linear system with time‐dependent damping properties. The expressions of the instantaneous damping and the power spectral density function (PSDF) of the superstructure response have been obtained in terms of the functionals of input wavelet coefficients. The proposed formulation has been validated by simulating a ground motion process. The effect of the frequency non‐stationarity on the non‐linear response has also been studied in detail, and it has been clearly shown how ignoring the frequency non‐stationarity in the ground motion leads to inaccurate non‐linear response calculations. Copyright © 2000 John Wiley & Sons, Ltd.