This open access book, written by world experts in aquaponics and related technologies, provides the authoritative and comprehensive overview of the key aquaculture and hydroponic and other integrated systems, socio-economic and environmental aspects. Aquaponic systems, which combine aquaculture and vegetable food production offer alternative technology solutions for a world that is increasingly under stress through population growth, urbanisation, water shortages, land and soil degradation, environmental pollution, world hunger and climate change.
Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since. Ultra high performance concrete (UHPC) is a milestone in concrete technology and application. It permits the construction of both more slender and more durable concrete structures with a prolonged service life and thus improved sustainability. This book is a comprehensive overview of UHPC - from the principles behind its production and its mechanical properties to design and detailing aspects. The focus is on the material behaviour of steel fibre-reinforced UHPC. Numerical modelling and detailing of the connections with reinforced concrete elements are featured as well. Numerous examples worldwide - bridges, columns, facades and roofs - are the basis for additional explanations about the benefits of UHPC and how it helps to realise several architectural requirements. The authors are extensively involved in the testing, design, construction and monitoring of UHPC structures. What they provide here is therefore a unique synopsis of the state of the art with a view to practical applications.
Provides an introduction to nuclear fusion and its status and prospects, and features specialized chapters written by leaders in the field, presenting the main research and development concepts in fusion physics. At over 1100 pages, this publication provides an unparalleled resource for fusion physicists and engineers.
Computing technology is constantly evolving and changing, developing and consolidating its position as a vital component of our lives. It no longer plays a minor part in society – it is embedded in, and affects, all aspects of life, from education to healthcare to war. Dealing with the implications of this is a major challenge, and one that can impact upon us, both personally and professionally. As a consequence, it is vital that all in the computing industry make wise decisions regarding their conduct. Using case studies and discussion topics drawn from entertaining real world examples, Pandora’s Box examines the background of a wide range of vital contemporary issues, encouraging readers to examine the social, legal and ethical challenges they will face in their own careers. Written in an engaging style and packed with international examples, this book addresses topics which have come to the forefront of public consciousness in recent years, such as online crime, piracy and peer to peer file sharing. Comprehensive coverage is provided of digital entertainment, censorship and privacy issues, presenting a rich source of context in which to consider ethical matters. Suitable for students on computer science degree programmes, as well as those taking IT related modules on other courses which consider the impact of technology on 21st century living, Pandora’s Box is an essential read and a unique and timely textbook.
Many factors affect the amount of temperature-induced movement that occurs in a building and the extent to which this movement can occur before serious damage develops or extensive maintenance is required. In some cases joints are being omitted where they are needed, creating a risk of structural failures or causing unnecessary operations and maintenance costs. In other cases, expansion joints are being used where they are not required, increasing the initial cost of construction and creating space utilization problems. As of 1974, there were no nationally acceptable procedures for precise determination of the size and the location of expansion joints in buildings. Most designers and federal construction agencies individually adopted and developed guidelines based on experience and rough calculations leading to significant differences in the various guidelines used for locating and sizing expansion joints. In response to this complex problem, Expansion Joints in Buildings: Technical Report No. 65 provides federal agencies with practical procedures for evaluating the need for through-building expansion joints in structural framing systems. The report offers guidelines and criteria to standardize the practice of expansion joints in buildings and decrease problems associated with the misuse of expansions joints. Expansions Joints in Buildings: Technical Report No. 65 also makes notable recommendations concerning expansion, isolation, joints, and the manner in which they permit separate segments of the structural frame to expand and to contract in response to temperature fluctuations without adversely affecting the buildings structural integrity or serviceability.
Since 2006, global food prices have fluctuated greatly around an increasing trend and price spikes were observed for key food commodities such as rice, wheat, and maize.
This safety guide represents a first international consensus on the subject of exemption principles. It recommends a procedure which might be followed in implementing the IAEA/NEA(OECD)/ILO/WHO Basic Safety Standards for Radiation Protection.
The design text, Sprinkle and Trickle Irrigation, opens up a new and clear window through which to view the physics, economics, design, and manage ment of pressurized irrigation systems. A broad array of system types and ap plications have been covered in detail to provide for complete understanding of systems design. Topics include soil-water-plant relations, general planning con cepts, hydraulics, economics, sizing, operation, maintenance, and special uses. Pressurized irrigation system types covered include hand-line, wheel-line, solid set, traveler, center-pivot, linear-moving and big-gun-sprinkler systems, pump ing systems, and a broad array of trickle system components. The work in this text culminates earlier major works by Jack Keller on the W. R. Ames Company Irrigation Handbook (1967), Rain Bird Sprinkler Man ufacturing Corp. 's Trickle Irrigation Design (1975), and the USDA-Soil Con servation Service's National Engineering Handbook, Section 15: Irrigation Chapter 11: Sprinkle Irrigation (1983) and Chapter 15: Trickle Irrigation (1984). These earlier works form the foundation upon which the majority of currently used design texts are based. The years of design and troubleshooting experiences of the authors and wide ranges of environments and design appli cations in which they have worked have resulted in the substance and robustness of this text in stated relationships and procedures.
