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The purpose of this paper is to propose a quantitative model for risk-based maintenance and remaining life assessment for gas turbines.

The proposed model uses historical failure and repair data from the operation of gas turbines. The time to failure of gas turbines is modeled using Weibull distribution.

The total risk is estimated considering replacement cost, repair cost, operation cost, risk of failure and turbine remaining value after a specified period of time.

The model is an effective tool to make optimal decisions regarding maintenance strategy (repair or replacement) and to assess the remaining life based on a comparison of the total risk. The literature review focusses on developing different models to make risk-based decisions regarding the selection of a maintenance strategy and maintenance interval, however, literature is silent regarding risk-based assessment of the equipment remaining life, which is the focus of present work. The model is tested and applied to ageing gas turbines in a cross-country pipeline.

The purpose of this paper is to discuss a vibrant social service culture in British and Indian higher education institutions in the period 1905-1919. The paper explores the many reciprocal influences between India and Britain, which lay behind the student social service movement. Developments in metropole and colony were so influenced by transnational movements of people and ideas that the common approaches and shared ideals which emerged cannot be fully understood by study of either setting in isolation.

The paper draws on a rich vein of college magazines and social service league publications as well as the writings of a range of enthusiasts for social service. The rapid spread of social service ideas across India and Britain relied on the exchange of ideas through English-language magazines and journals and the outreach work of leading social servants who addressed numerous student groups and meetings.

Developments in Indian and British student service were shaped by and shaped in turn a wider social movement in the early twentieth century. Indian and western educationalists spread ideas about student social service through lectures, publications and international exchanges. Student social servants in both metropole and colony shared a set of core values which made up an “ideal of service”. Students in both metropole and colony were enjoined to view their education as a period of preparation for greater service to the nation after graduation. Student service leagues were involved in reworking patriotic idiom to link social service with nation building.

The paper builds on recent work on social service and education to develop knowledge and understanding of transnational networks of educationalists, particular movements of people and ideas between colonial India and metropolitan Britain. Taking social service in higher education as a case study, the paper argues for the need to study developments in both metropole and colony in order to better understand reciprocal impacts.

The purpose of this paper is to develop a better understanding of the state of knowledge of students and faculty on the Michigan State University (MSU) campus; identify relevant gaps in knowledge and misconceptions about recycling; and provide recommendations regarding how these gaps and misconceptions may be addressed through education and outreach.

Using mental models analysis, the current state of knowledge possessed by students and faculty was compared with a comprehensive inventory of on‐campus recycling procedures and opportunities.

By combining data from individual mental models elicited from students and faculty members, an overall mental model that depicted the frequency with which subjects understood MSU‐specific recycling concepts was developed. This composite model, and the accompanying statistical analysis, revealed important gaps – on part of both students and faculty – in understanding for several key recycling concepts that are relevant to established campus‐based waste reduction practices.

The mental models approach, which to the authors' knowledge has yet to be applied to campus sustainability initiatives, provides program managers and outreach specialists with a constructive and transparent opportunity to develop and deploy program information that builds on existing knowledge while also meeting the new information needs of key stakeholders.

Investigates the differences in protocols between arbitral tribunals and courts, with particular emphasis on US, Greek and English law. Gives examples of each country and its way of using the law in specific circumstances, and shows the variations therein. Sums up that arbitration is much the better way to gok as it avoids delays and expenses, plus the vexation/frustration of normal litigation. Concludes that the US and Greek constitutions and common law tradition in England appear to allow involved parties to choose their own judge, who can thus be an arbitrator. Discusses e‐commerce and speculates on this for the future.

This paper aims to contribute to the ethical debate over roles and responsibilities to address the injustices of climate change and its impacts. The current impasse over taking action may lie in the very different ways people view the world and their place in it. The aim is to explore some profound contradictions within differing strands of knowledge feeding into common understandings of climate justice.

A literature review of appropriate peer-reviewed and “grey” literature was conducted with a view to defining the term “climate justice”.

In addition to there being no single, clear definition of climate justice, a fundamental schism was found between what indigenous peoples want to see happen and what industrialised nations can do with respect to both the mitigation of, and adaptation to, climate change.

One limitation to defining climate justice, and reason for publishing, is the lack of peer-reviewed work on this topic.

This paper has many practical implications, the most fundamental of which is the need to reach a consensus over rights to the Earth’s resources. If humanity, within which there are many societies, chooses to follow a truly equitable path post 2015, industrialised countries and corporations will need to move away from “endless growth economics”. The ways in which climate justice might be operationalised in future are considered, including the concept of a “climate-justice” checklist.

While the reconciliation proposed in this paper might be considered idealistic, unless it is acknowledged the Earth’s resources are limited, over-exploited and for all people to use sustainably, thus requiring a reduction in consumption by individuals relatively affluent in global terms, climate negotiators will continue talking about the same issues without achieving meaningful change.

A Report has been issued by the Medical Research Council upon the investigations of the Salmonella Group, with special reference to food‐poisoning, conducted by Dr. William G. Savage and Mr. P. Bruce White. In a preface to the report, it is stated that early in 1921 the Ministry of Health invited the co‐operation of the Medical Research Council in the promotion of a scheme of investigation into outbreaks of food‐poisoning, of which the general lines had been arranged by the Ministry in consultation with Dr. W. G. Savage, medical officer of health for Somersetshire. Nearly nine‐tenths of food‐poisoning outbreaks are due to organisms of the Salmonella or Gaertner group of bacteria, and although much successful work has been done in the identification and classification of these organisms and in tracing the causes of particular outbreaks of poisoning, we have very little knowledge of the paths, whether through animal infections or otherwise, by which these organisms have found their way originally into the food to which their subsequent ill‐effects may have been traced. The council undertook to promote further investigation. They secured the whole‐time services of Mr. P. Bruce White for the bacteriological work required, and by the courtesy of Professor Walker Hall he was enabled to work in the bacteriological laboratories of the University of Bristol, in close touch with Dr. Savage at Weston‐super‐Mare. The field inquiries were arranged by the Food Department of the Ministry of Health, with the assistance of medical officers of health and of veterinary surgeons. In these, Dr. Savage and Mr. Bruce‐White co‐operated while conducting the laboratory investigations. The results already gained include some important advances in our knowledge of the natural history of organisms of the Salmonella group, and a record of the details of many varieties of outbreaks of food‐poisoning among human beings. That side of the inquiry, in which it was hoped to deal effectively with the paths of infection through domestic or agricultural animals, has halted, in spite of much effort, for want of better facilities in this country for systematic studies of comparative pathology, but it is hoped that in the early future the work can be extended successfully in this direction. The introduction to the report explains that the primary object of the investigation has been the elucidation, not merely of the causes of bacterial food‐poisoning outbreaks, which are for the most part known, but the paths by which infection is transmitted to the food. The latter, in spite of much work, remains largely unascertained. Since the majority of outbreaks, and practically all of any importance, which occur in this country are due to specific infection or intoxication with bacilli of the Salmonella group, work has been restricted to that group. The problem is so complex that the investigators have repeatedly been compelled to branch off into studies which at first may not seem to be germane to the primary object, but they are necessary deviations and bear directlv upon the work. The report is divided into three parts. Part I. contains an extensive survey of the serological properties of the group. It shows that the sub‐grounds described are definite entities which arc fairly clear‐cut, and which do not pass into one another under any known conditions. It is hoped that these studies, following on the valuable work of Schütze and others, will establish the different sub‐groups or types on a clearly recognizable basis. In Part 2 the investigators have tried to demonstrate that these sub‐groups not only have a definite distribution in nature, but have become somewhat specialised in their disease‐producing characters. It is obvious that until this is done it is not possible to disentangle their relationships to disease or to place the aetiology of food‐poisoning on a firm basis. The definitions and distinctions between the different sub‐groups have been so confused in the past that the essential importance of this relationship has largely been overlooked. In Part 3 experimental work is advanced which the investigators consider helps to explain the differing disease‐producing rôles of these sub‐groups.

That ice‐creams prepared with dirty materials and under dirty conditions will themselves be dirty is a proposition which, to the merely ordinary mind, appears to be sufficiently obvious without the institution of a series of elaborate and highly “scientific” experiments to attempt to prove it. But, to the mind of the bacteriological medicine‐man, it is by microbic culture alone that anything that is dirty can be scientifically proved to be so. Not long ago, it having been observed that the itinerant vendor of ice‐creams was in the habit of rinsing his glasses, and, some say, of washing himself—although this is doubtful—in a pail of water attached to his barrow, samples of the liquor contained by such pails were duly obtained, and were solemnly submitted to a well‐known bacteriologist for bacteriological examination. After the interval necessary for the carrying out of the bacterial rites required, the eminent expert's report was published, and it may be admitted that after a cautious study of the same the conclusion seems justifiable that the pail waters were dirty, although it may well be doubted that an allegation to this effect, based on the report, would have stood the test of cross‐examination. It is true that our old and valued friend the Bacillus coli communis was reported as present, but his reputation as an awful example and as a producer of evil has been so much damaged that no one but a dangerous bacteriologist would think of hanging a dog—or even an ice‐cream vendor—on the evidence afforded by his presence. A further illustration of bacteriological trop de zèle is afforded by the recent prosecutions of some vendors of ice‐cream, whose commodities were reported to contain “millions of microbes,” including, of course, the in‐evitable and ubiquitous Bacillus coli very “communis.” To institute a prosecution under the Sale of Food and Drugs Act upon the evidence yielded by a bacteriological examination of ice‐cream is a proceeding which is foredoomed, and rightly foredoomed, to failure. The only conceivable ground upon which such a prosecution could be undertaken is the allegation that the “millions of microbes ” make the ice‐cream injurious to health. Inas‐much as not one of these millions can be proved beyond the possibility of doubt to be injurious, in the present state of knowledge; and as millions of microbes exist in everything everywhere, the breakdown of such a case must be a foregone conclusion. Moreover, a glance at the Act will show that, under existing circumstances at any rate, samples cannot be submitted to public analysts for bacteriological examination—with which, in fact, the Act has nothing to do—even if such examinations yielded results upon which it would be possible to found action. In order to prevent the sale of foul and unwholesome or actual disease‐creating ice‐cream, the proper course is to control the premises where such articles are prepared; while, at the same time, the sale of such materials should also be checked by the methods employed under the Public Health Act in dealing with decomposed and polluted articles of food. In this, no doubt, the aid of the public analyst may sometimes be sought as one of the scientific advisers of the authority taking action, but not officially in his capacity as public analyst under the Adulteration Act. And in those cases in which such advice is sought it may be hoped that it will be based, as indeed it can be based, upon something more practical, tangible and certain than the nebulous results of a bacteriological test.

Literature indicates that the business case for projects is difficult to use and suggests that there are organizational factors that can facilitate effective use of the business case. This paper aims to identify such facilitators, measure their presence and importance, and relate them to the actual practice of business case processes.

A cross sectional quantitative method was used, with data on facilitators and business case process usage gathered through an online questionnaire.

The findings for the 43 organizational facilitators are that each one is considered more important than its presence in the respondents' organizations. High correlations emerge between the presence of the facilitators and the use of business case processes, indicating the pivotal role of the facilitators.

The research was conducted for business IT projects implemented by organizations based in South Africa. It furthers our understanding of project business cases and suggests additional research avenues in this area.

The findings indicate that organizations could improve key facilitators at an affordable cost. Such improvement would enable more effective use of the business case throughout the project's lifetime – from initial concept until planned benefits have been substantially realized. Better use of the business case would also support governance and increase the success rate of business IT projects.

Organizational facilitators of business case processes are identified and categorized for the first time, leading to measurements of their perceived importance and presence in organizations. Hence, the relationship between these facilitators and actual business case usage is determined, suggesting areas of optimum impact.

A new, non‐metallic, gold pearlescent luster pigment called Mearlin Mayan Gold, has been introduced by The Mearl Corporation, New York. Exhibiting a rich, gold appearance, this newest pigment is offered in both a regular, as well as an exterior grade for applications requiring long‐term exposure to adverse weathering.