ArDHO-deep RNN: autoregressive deer hunting optimization based deep recurrent neural network in investigating atmospheric and oceanic parameters

Multimedia Tools and Applications - In recent decades, weather prediction results in a challenging and complex task in various disciplines. However, prediction of the atmospheric parameters is...     

Amorphous Metallic Alloys: Pathways for Enhanced Wear and Corrosion Resistance

Amorphous metallic alloys are widely used in bulk form and as coatings for their desirable corrosion and wear behavior. Nevertheless, the effects of heat treatment and thermal cycling on these surface properties are not well understood. In this study, the corrosion and wear behavior of two Zr-based bulk metallic glasses were evaluated in as-cast and thermally relaxed states. Significant improvement in wear rate, friction coefficient, and corrosion penetration rate was seen for both alloys after thermal relaxation. A fully amorphous structure was retained with thermal relaxation below the glass transition. There was an increase in surface hardness and elastic modulus for both alloys after relaxation. The improvement in surface properties was explained based on annihilation of free volume.     

Research on information systems in developing countries: Current landscape and future prospects

The current landscape of the information systems research literature concerned with developing countries is surveyed by examining a range of research articles published from 2000 onward. These are discussed in terms of the key challenges addressed, including the role of technology, and the methodological and theoretical approaches used. Prospects for future research are discussed, based on a conceptual view as to how to study information and communication technologies (ICTs) in developing countries, to classify existing work, identify gaps, and suggest future opportunities. The authors contribute to the important debate on how ICTs in general, and information systems research in particular, can make a positive difference in the developing countries. © 2006 Wiley Periodicals, Inc.     

A review of different perspectives on uncertainty and risk and an alternative modeling paradigm

The literature in economics, finance, operations research, engineering and in general mathematics is first reviewed on the subject of defining uncertainty and risk. The review goes back to 1901. Different perspectives on uncertainty and risk are examined and a new paradigm to model uncertainty and risk is proposed using relevant ideas from this study. This new paradigm is used to represent, aggregate and propagate uncertainty and interpret the resulting variability in a challenge problem developed by Oberkampf et al. [2004, Challenge problems: uncertainty in system response given uncertain parameters. Reliab Eng Syst Safety 2004; 85(1): 11-9]. The challenge problem is further extended into a decision problem that is treated within a multicriteria decision making framework to illustrate how the new paradigm yields optimal decisions under uncertainty. The accompanying risk is defined as the probability of an unsatisfactory system response quantified by a random function of the uncertainty.     

Small-Scale Mechanical Behavior of Ion-Irradiated Bulk Metallic Glass

JOM - The effect of ion irradiation on the hardness and yield strength of Zr57Nb5Cu15.4Ni12.6Al10 bulk metallic glass has been studied using nanoindentation and micropillar compression tests. The...