D.J. Stephenson – författare

Stormwater Hydrology and Drainage

Pipeflow Analysis

Requiring little mathematical background, the book provides tools for hydraulic engineers and hydrologists concerned with estimating catchment runoff and floods. It condenses widely spread research literature on the subject of kinematic hydrology and emphasizes basic principles so it should be of value to students and teachers in these areas. The book is comprehensive and yet written in a basic way enabling practitioners to pick out relevant sections and apply them to real problems. It also contains a valuable collection of charts and equations as well as simple computer programs for modelling catchment runoff and stream flow using the kinematic equations.A wide spectrum of hydrological processes can be analyzed using the kinematic equations. Overland flow, stream flow and even groundwater flow can be studied. A review of the assumptions behind the theory indicates where alternative equations are more accurate. The book thus provides tools for hydrological simulation, stormwater system design and catchment management. It will be particularly useful for professors and students in postgraduate and senior years in hydrology, and practicing engineers and hydrologists in stormwater, flood and water resources fields.

This book provides a sound basis for analysing water supply schemes from the point of view of water quality. A systematic approach to decision making in water resources planning is presented with particular reference to wastewater re-use. Methods for deciding between recycling, purification or use of river water are given. The problems of poor quality water are documented and alternatives suggested, including management in a way to achieve objectives in the most economic manner.Various methods of system simulation and optimization are applied in a number of case studies. Methods of analysis and numerical methods are described, as well as the basis of pollution and water quality. The economics of desalination are also discussed. The examples studied range from regional supplies to internal re-circulation. Groundwater and artificial recharge are considered, and stormwater quality and sewerage systems are also covered. Computer applications exist throughout and a number of simulation and optimization programs in BASIC are presented. The necessity for scientific sampling procedures in monitoring water quality, an often ignored subject, was written by Professor Tom Sanders of Colorado State University.The theory and case studies should prove of value in many aspects of planning the use of water resources with quality constraints. Wastewater re-use and conservation are therefore promoted by the approach adopted.

"... the book is at its best in the design and analysis sections and could stand on these alone as a well-stocked handbook with copious references for further study," commented the Journal of the National Water Council after publication of an earlier edition of Pipeline Design for Water Engineers. This classic monograph has been revised and updated to take account of new developments in the field. Recent research in cavitation and flow control has prompted additional sections to be added. There are also new sections on supports to exposed pipes and secondary stress. Additional references and a new layout make up this edition. Some sections appearing in previous editions, noteably on pipe network systems analysis and optimization have been ommitted as they were considered more appropriate in the author''s parallel book ``Pipeflow Analysis'''' (Developments in Water Science, 19).

Water resources exploitation has been regarded as a way of initiating economic development in many countries. Planning concepts are now changing. Thorough environmental studies, sociological and economic studies now preceed project formulation. Justification solely on the basis of benefit cost studies is no longer sufficient for many development agencies. The broader approach is introduced in this book, but the real emphasis is on the situation in and needs of developing countries.Some of the problems experienced in building water resources in developing countries are described in this book, and methods of solution based on the limited experience of the authors, are offered. These range from use of unbiased common sense, coupled with a close understanding of people''s requirements, to a comprehensive computer simulated planning model. Some types of water resources development are described in more detail. These include irrigation, hydro electric power and rural water supply. Sections on socio-economics and human resource development are also included, as well as on data collection, and project planning. Lessons from the failure of multimillion dollar projects are not hard to come by, and examples and pointers which will assist future planners are given. Attention is paid to the need for aid to include training and to stimulate local economies. However big water projects appear, they cannot escape the effects of the rest of the country''s economy. Attention is also drawn to environmental problems, particularly soil erosion, often caused by water resources development. The fact that water resources development cannot be carried out by engineers only, is recognized. The input of many professions, and vast experience, is needed. Drawn on international case studies, much of the material has been presented in postgraduate courses by the authors.

Rockfill in Hydraulic Engineering

Newnes Guide to Satellite TV is a practical guide, to the installation and servicing of satellite TV receiving equipment. Derek Stephenson provides all the essential background information without weighing it down with excessive theory or mathematics, and covers the practice of installation and servicing with clear step-by-step guidance. Essential data tables and numerous diagrams are included throughout.

This book meets the practical need between theoretical textbook and simple installation guide. The work includes topics such as digital TV, including MPEG-2, reception requirements, LNB requirements, digital link budget extensions, and a new section on squinting antennas.

The Guide has always been known for the practical nature of the information it contains, such as the control of problems involving 'sparklies', trees, rain and vandals (solved by the now famous 'two drunks high' dish mounting rule). The result is a text which provides the necessary information to specify, install and maintain both fixed and polar mount antenna systems along with small IF distribution systems for small blocks of flats and hotels.

Derek Stephenson is a practising video/satellite TV repair engineer and the author of Satmaster Pro, a leading Windows-based software package for satellite TV.

Practical guide without excessive maths or theory Written by a practicing video/satellite TV repair engineer Provides all the necessary info to install and maintain Satellite TV systems

There is currently great interest in the process of diffusion bonding. The main thrust has been in the joining of advanced materials such as superplastic alloys, metal matrix composites and ceramics and, most importantly, to introduce the process into mass-production operations. Diffusion bonding has also led to reduced manufacturing costs and weight savings in conventional materials and developments in hot isostatic pressing have allowed greater design flexibility. Since the first conference on Diffusion Bonding, held at Cranfield in 1987, considerable advances have been made and it was therefore considered appropriate to organise the Second International Conference on Diffusion Bonding which was held at Cranfield Institute of Technology on 28 and 29 March 1990. The meeting provided a forum for the presentation and discussion of recent developments in Diffusion Bonding and was divided into four main subject areas: steel bonding and quality control, diffusion bonding of aluminium alloys, bonding of high temperature materials and general applications. This structure is retained in the proceedings. DAVID STEPHENSON vii CONTENTS v Preface ......................... .