Search results

The purpose of this paper is to investigate the applicability of the quadratic failure hypothesis (QFH) on journal bearings coated with a white metal sliding layer on the prediction of safe and unsafe operating conditions. The hypothesis covers operation conditions under static and dynamical loading.

Material tests and elastohydrodynamic, as well as structural, simulations were conducted to provide the required input data for the failure hypothesis. Component samples were tested to verify the results of the QFH.

The load bearing capacity of journal bearings was analysed for different operating conditions by the use of the QFH. Results allow for the identification of critical and non-critical loading conditions and are in accordance with component test results.

Today’s design guidelines for journal bearings do not consider a multi-axial stress state and actual stress distribution. The applied hypothesis enables consideration of multiaxiality inside the sliding surface layer, as well as determining the location of bearing fatigue due to material overload.

The purpose of this paper is to assess elements of food safety management and food safety culture within a prominent South African entertainment, hotel and food service complex.

In this paper a qualitative case study approach was used. Following a comprehensive literature review, based on factors known to be important in developing a food safety culture, in combination with national and international food safety standards, an interview guide was constructed and utilised in a series of semi-structured interviews. The interviewees represented different management levels involved in food delivery but did not include board level managers.

Many of the factors considered important in good food safety management, including the presence of a formal food safety policy and the creation and maintenance of a positive food safety culture, were absent. Although a formal system of internal hygiene auditing existed and food safety training was provided to food handlers they were not integrated into a comprehensive approach to food safety management. Food safety leadership, communication and support were considered deficient with little motivation for staff to practise good hygiene.

Food safety culture is increasingly recognised as a contributory factor in foodborne disease outbreaks and is the focus of increasing research. However, although every food business has a unique food safety culture there are relatively few published papers concerning its analysis, application and use within specific businesses. This case study has identified food safety culture shortcomings within a large food service facility suggesting there was a potentially significant food safety risk and indicates ways in which food safety could be improved and the risk reduced. The results also suggest further work is needed in the subject of food safety culture and its potential for reducing foodborne disease.

Avant‐propos sous les auspices de l'Institut international de Coopération intellectuelle, paraissait en 1934 le t. I, consacré à l'Europe, du Guide international des Archives. Le questionnaire envoyé à tous les États européens comportait sous les points 4 et 6 les questions suivantes: ‘Existe‐t‐il un guide général pour les diverses catégories d'Archives ou des guides particuliers pour l'une ou l'autre d'entre elles?’ et ‘Existe‐t‐il des catalogues imprimés, des publications tant officielles que privées, susceptibles de constituer un instrument complet de référence pour tout ou partie importante des fonds d'archives?’ Les réponses des divers pays à ces questions, malgré leur caractère très inégal, ont fait du Guide international un bon instrument d'information générale sur les Archives. Malheureusement les circonstances ont empêché la publication du volume consacré aux États non européens, tandis que le temps qui s'écoulait tendait à rendre périmés les renseignements fournis sur les Archives européennes.

THE method of conducting some of the Library Association professional examinations at provincial centres this year has given rise to a certain degree of adverse comment. We have received a letter from the National Union of Clerks, signed Mr. Herbert H. Elvin, the General Secretary, in which it is stated that “If it is intended that the Library Association examination should take a place amongst the recognised professional examinations some enquiry should be made as to the methods adopted in the various local centres for the supervision of the candidates.” After giving some particulars, the letter proceeds: “If examinations are to be held, would it not be better to abolish local centres altogether, and hold the examination in London, where all candidates might be sure of receiving the same treatment?” At the Annual Meeting of the Library Assistants' Association at Nottingham the other day, numerous complaints of a similar nature were made, of which particulars are given in the current Library Assistant. No doubt special local circumstances affected the administration of the examinations to a considerable extent, but even making allowances for this, there seems to be plenty of room for reform and improvement.

The geopolitical phenomenon commonly known as ‘France-Africa’ (Gourévitch 1997) is the fruit of the historical and political relations that France as a colonizing power has maintained and continues to maintain to this day with its former colonies in Africa. Before the colonial period, Africa was originally made up of autonomous political entities (states).¹ The current mapping of African states is the result of the European political will expressed at the Berlin Conference held from 15 November 1884 to 26 February 1885.²

The following bibliography focuses mainly on programs which can run on IBM microcomputers and compatibles under the operating system PC DOS/MS DOS, and which can be used in online information and documentation work. They fall into the following categories:

In formulating his theory of land rent, Ricardo did not take into account the fact that in the Europe of his time relationships between landlords and tenants were often regulated by customs that kept rents below marginal product, sometimes even in the long term. Since all those customs had a number of points in common, understanding the logic governing one of them can be a very useful way to gain an overall understanding of the phenomenon. This chapter analyses a case of such customs in the area of market-gardens surrounding the city of Valencia, eastern Spain. Here, tenants were by custom the owners of the improvements they carried out, agricultural efficiency increased, and land rents stagnated. The chapter addresses issues such as cooperation among large groups of people, definition of rights and the creation of property rights by means of social conventions that clashed with law.

According to Christopher (2000), in a lot of sectors, the competition is a question of supply chain against supply chain. The winner in term of competitive advantage should be the one, who is able to obtain more than the competitor from the available resources. In strategic literature, Dyer and Singh (1998) are the first who introduced the concept of “relational competency” to explain why some companies gain their competitive advantage not directly from their internal resources but mainly because they are able better to combine external resources.

This paper is a case study.

The author describes the different phases and strategic decisions in the building of a real supplier eco-system.

It is a sole case study.

This study is a description of a success story.

This study is a description of an external resource management in action.