Heat flow in composite rods – An old problem reconsidered

Heat transfer enhancement in a spiral plate heat exchanger model using continuous rods

This study presents an innovative and simple way to increase the rate of heat transfer in a spiral plate heat exchanger model. Several circular cross-section rods, as continuous vortex generators, have been inserted within the spiral plate heat exchanger in the cross-stream plane. The vortex generators are located at various azimuth angles of α=30◦, 60◦, 90◦, and 120◦ with non-dimensional diame...

The Module Isomorphism Problem Reconsidered

Algorithms to decide isomorphism of modules have been honed continually over the last 30 years, and their range of applicability has been extended to include modules over a wide range of rings. Highly efficient computer implementations of these algorithms form the bedrock of systems such as GAP and Magma, at least in regard to computations with groups and algebras. By contrast, the fundamental ...

An Age-Old Problem

R apid advances in the basic and medical sciences, while rapidly expanding our knowledge base on a host of physiological processes (and their cellular and organismal consequences when disrupted), are also posing a significant burden. The sheer volume of information amassed from a host of experimental systems and model organisms can represent a daunting assimilation task to both the neophyte and...

The College Admissions Problem Reconsidered

This paper revisits the college admissions problem and studies the efficiency, incentive, and monotonicity for colleges. We show that max-min criterion that is stronger than substitutability, together with the quota-saturability that requires having enough acceptable applicants, guarantees weak Pareto efficiency and strategy-proofness for colleges under the colleges-proposing deferred acceptanc...

The Monty Hall Problem, Reconsidered