Trefor Williams's Books

Health for Life has been fully updated to bring it into line with the changes in the PSHE Curriculum and the new emphasis on Citizenship.

Trefor M. Owen’s seminal work educates, enlightens and entertains with a far-reaching yet accessible text, which paints a colourful and comprehensive portrait of a nation’s rich folk culture. The Customs and Traditions of Wales is an illuminating and engrossing insight into a subject that continues to unfold and develop in contemporary life. Despite an increasingly globalised society that has transformed local communities, folk customs are still practised and enjoyed the world over as people combine modern-day and historical rituals and embrace opportunities to learn about their past, and Owen’s influential study has maintained its relevance as customs change and evolve.

Quantifying the effect(s) of human-induced changes on aquatic ecosystems is a fundamental objective in ecological assessment, and one that often requires the use of a reference condition. Because of the widespread degradation of many aquatic ecosystems, finding pristine or even minimally disturbed reference sites can be a challenging (read frustrating) and costly endeavour. This book gives a comprehensive description of present-day concepts and practices in working with the use of references in quantifying departures from conditions expected with no or only minimal anthropogenic effects.

Aquatic ecosystem assessment is a rapidly developing field, and one of the newer approaches to assessing the condition of rivers and lakes is the Reference Condition Approach. This is a significant advancement in biomonitoring because it solves the problem of trying to locate nearby control or reference sites when studying an ecosystem that may be degraded, a problem that bedevils traditional approaches. Rather than using upstream reference sites in a river system or next-bay-over reference sites in a lake, an array of ecologically similar, least-exposed to stress sites scattered throughout a catchment or region is used. Once the reference condition has been established, any site suspected of being impacted can be assessed by comparison to the reference sites, and its status determined. The Reference Condition database, once formed, can be used repeatedly.

With a fresh approach that addresses the unique features of construction management for the 21st century, this book provides an overview of the construction industry and the management of construction projects. Construction Management: Emerging Trends and Technologies offers solid, foundational concepts in "traditional" areas, including construction contracts, cash flow, estimating and scheduling. Setting it apart from traditional books on the subject, it breaks away from these traditional areas to explore emerging areas of interest, such as "mega-projects," design-build construction, public private partnerships, the application of information technology to construction, configuration management, and sustainable construction. With thorough, up-to-date information and detailed explanations, this is an indispensable resource for anyone seeking a better understanding of the up-and-coming state of the construction management industry.

An exploration of three particularly sensitive health topics - drugs, personal safety and relationships - accompanied by more than a hundred classroom activities for primary schools.

Increasingly, contractors are introducing quality assurance systems into their organizations to provide a series of checks and controls on projects. However, a QA system is expensive to design and takes time to develop. This book provides a system for medium to large size contractors, and gives guidance on how to implement it. The new edition includes a new chapter on maintenance of the system and a further chapter on total quality management.

Health for Life has been fully updated to bring it into line with the changes in the PSHE Curriculum and the new emphasis on Citizenship.

Book's by Trefor Williams

Health for Life - Ages 4-7

Health for Life - Ages 4-7

Health for Life - Ages 8-11

Health for Life - Ages 8-11

The Customs and Traditions of Wales

The Customs and Traditions of Wales

Bioassessment of Freshwater Ecosystems

Bioassessment of Freshwater Ecosystems

Bioassessment of Freshwater Ecosystems

Bioassessment of Freshwater Ecosystems

Construction Management

Construction Management

Health for Life

Health for Life

Quality Assurance

Quality Assurance

Health for Life - Ages 4-7

Health for Life - Ages 4-7

Health for Life - Ages 8-11

Health for Life - Ages 8-11

Username

Password

Username

Password

Password again

Birthday

Email