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This paper aims to investigate the oxygen transport characteristics in the electrolyte membrane of proton exchange membrane fuel cell (PEMFC), in particular, the water content dependence and the microscopic view of the molecular transport.

Molecular dynamics simulation is used to examine the oxygen transport characteristics in the electrolyte membrane of PEMFC that we have experimentally observed in our previous study.

Molecular dynamics simulation well predicts the diffusion coefficient of oxygen in the membrane. It was found that the oxygen molecules have preference in their transport passage that governs the property.

First attempt is to theoretically examine the experimentally observed water uptake dependence of the oxygen diffusion coefficient in membrane and to explain the mechanism.

The purpose of this paper is to contest Edwards et al.’s (2002) findings that resistance to the introduction of double-entry bookkeeping and the form that it took when implemented by the British Government in the mid-nineteenth century was the result of ideological conflict between the privileged landed aristocracy and the rising merchant middle class.

The study draws upon a collection of documents preserved as part of the Grigg Family Papers located in London and the Thomson Papers held in the Mitchell Library in Sydney. It also draws on evidence contained within the British National Archive, the National Maritime Museum and British Parliamentary Papers which has been overlooked by previous studies of the introduction of DEB.

Conflict and delays in the adoption of double-entry bookkeeping were not primarily the product of “ideological” differences between the influential classes. Instead, this study finds that conflict was the result of a complex amalgam of class interests, ideology, personal antipathy, professional intolerance and ambition. Newly discovered evidence recognises the critical, largely forgotten, work of John Deas Thomson in developing a double-entry bookkeeping system for the Royal Navy and the importance of Sir James Graham’s determination that matters of economy would be emphasised in the Navy’s accounting.

This study establishes that crucial to the ultimate implementation of double-entry bookkeeping was the passionate, determined support of influential champions with strong liberal beliefs, most especially John Deas Thomson and Sir James Graham. Prominence was given to economy in government.

This article presents a history of the visual merchandising of American firearms from the mid-19th century until the present day. Although the scholarly literature has investigated visual representations of guns in advertising and popular media, it has paid far less attention to how sellers have displayed these objects at or near the point of purchase.

Primary sources include frescoes, engravings and photographs, plus papers, advertising and illustrations in popular newspapers and trade magazines. These and other period visual data are supplemented by secondary sources from a variety of fields, especially retailing and firearms history.

Evidence shows that American firearms were merchandised visually by Samuel Colt at three world expositions in the 1850s, by gunmakers and retailers in the latter 19th century, by Winchester and Remington dealers in the 1920s and 1930s, by high- and low-end retailers in New York in the first half of the 20th century and by gun stores, auctions and shows up to the present day.

The history of visual merchandising generally has focused upon major department stores, their alluring street-front windows and their fancy interior displays. This research explores past and present visual merchandising of firearms by manufacturers and smaller retailers. To the best of the author’s knowledge, it is the first such history of the subject.