Notification services mediate between information publishers and consumers that wish to subscribe to periodic updates. In many cases, however, there is a mismatch between the dissemination of these updates and the delivery preferences of the consumer, often in terms of frequency of delivery, quality, etc. In this paper, we present an automated negotiation engine that identifies mutually acceptable terms; we study its performance, and discuss its application to a Grid notification service. We also demonstrate how the negotiation engine enables users to control the Quality of Service levels they require.

Food safety is important and consumers have a right to expect that those who supply the food that they buy have taken every care to manufacture products that will do them no harm. Those with a responsibility for the regulation of the global food industry recognise this principle and legislate accordingly and the business of managing and regulating the safety of the food supply chain has come a long way in the last 25 years or so. Prompted by the emergence of new food safety hazards, such as the bacterial pathogens Listeria monocytogenes and E. coli O157, powerful new techniques for evaluating and managing the risks presented by these threats have been developed. For example, hazard analysis critical control point, or HACCP, has now become the food safety management system of choice worldwide. Although the food safety management tools are now widely available, they are still virtually useless unless they are supported by adequate and accurate information. HACCP does not work unless its practitioners have access to enough data and scientific knowledge to enable them to understand hazards and how to control them effectively. The Food Safety Hazard Guidebook is an attempt to address the problem of accessing the available information by distilling the key facts about a wide range of individual food safety hazards into a single text. The result is a guidebook, rather than an encyclopaedia, which acts as a portal for the immense and ever expanding body of scientific knowledge that exists for food safety. It is an easy-to-use information resource for anyone with a professional interest in the safety of the food supply. The book is easy to navigate and presents concise and carefully researched factual information on a wide range of biological and chemical hazards in a clear format that is designed to support risk analysis exercises and HACCP studies. It covers a broad range of established and emerging food safety hazards and includes details of authoritative sources of further information (many web-based) for those seeking to examine a topic in greater depth. The section on food allergens is a particularly valuable component of the book, the chapters on fish toxins are also useful and unusual in a book of this kind and bacterial pathogens are comprehensively covered. One of the most important features of the book is the wide scope of the content and the highly structured format designed to help the reader find information quickly. Other key benefits to the reader are: -The wide range of biological and chemical hazards covered in a single book -Written specifically with food industry professionals in mind -Easy to navigate and accessible for the non-expert -Clear and concise presentation of factual information presented in a format that lends itself to use in risk assessment exercises -Inclusion of references and web links to reliable sources of further information on each chapter -specifically designed for practical use by a professional readership.

No abstract

No abstract

Food safety is important and consumers have a right to expect that those who supply the food that they buy have taken every care to manufacture products that will do them no harm. Those with a responsibility for the regulation of the global food industry recognise this principle and legislate accordingly and the business of managing and regulating the safety of the food supply chain has come a long way in the last 25 years or so. Prompted by the emergence of new food safety hazards, such as the bacterial pathogens Listeria monocytogenes and E. coli O157, powerful new techniques for evaluating and managing the risks presented by these threats have been developed. For example, hazard analysis critical control point, or HACCP, has now become the food safety management system of choice worldwide. Although the food safety management tools are now widely available, they are still virtually useless unless they are supported by adequate and accurate information. HACCP does not work unless its practitioners have access to enough data and scientific knowledge to enable them to understand hazards and how to control them effectively. The Food Safety Hazard Guidebook is an attempt to address the problem of accessing the available information by distilling the key facts about a wide range of individual food safety hazards into a single text. The result is a guidebook, rather than an encyclopaedia, which acts as a portal for the immense and ever expanding body of scientific knowledge that exists for food safety. It is an easy-to-use information resource for anyone with a professional interest in the safety of the food supply. The book is easy to navigate and presents concise and carefully researched factual information on a wide range of biological and chemical hazards in a clear format that is designed to support risk analysis exercises and HACCP studies. It covers a broad range of established and emerging food safety hazards and includes details of authoritative sources of further information (many web-based) for those seeking to examine a topic in greater depth. The section on food allergens is a particularly valuable component of the book, the chapters on fish toxins are also useful and unusual in a book of this kind and bacterial pathogens are comprehensively covered. One of the most important features of the book is the wide scope of the content and the highly structured format designed to help the reader find information quickly. Other key benefits to the reader are: -The wide range of biological and chemical hazards covered in a single book -Written specifically with food industry professionals in mind -Easy to navigate and accessible for the non-expert -Clear and concise presentation of factual information presented in a format that lends itself to use in risk assessment exercises -Inclusion of references and web links to reliable sources of further information on each chapter -specifically designed for practical use by a professional readership.