Discover (or rediscover) the fun and magic of building electronic circuits with thermatrons (vacuum tubes). This book has everything you need to know about the art and science of thermatron design and construction. It pulls together, in one easy to read book, thermatron types and characteristics, thermatron homebrew techniques, and how to design audio and RF triode and pentode circuits. The book is written primarily for radio amateurs (or audio equipment builders) that already understands basic electronics but have forgotten or never had the pleasure of working with hollow-state devices. The Second Edition includes over 50+ pages of new and revised material including a new chapter on thermatron oscillator design.

This textbook is a comprehensive introduction to structural steelwork design based on the limit states approach to BS 5950, for use by undergraduates in civil and structural engineering. It will also serve as a reference for practising engineers unfamiliar with new parts of BS 5950. The text introduces basic properties of steel, types of steel structure and steelwork design in order to develop an understanding of the various aspects of the behaviour and design of structural steelwork. This edition has been thoroughly revised in accordance with the 2000 amendment to Part 1 of BS 5950 - all references have been updated and a new section on partial encasement for fire resistance has been added. Each chapter features worked examples, practice problems and references.

This topical book contains the latest scientific and engineering developments in the field of tubular steel structures, as presented at the "11th International Symposium and IIW International Conference on Tubular Structures". The International Symposium on Tubular Structures (ISTS) has a long-standing reputation for being the principal showcase for manufactured tubing and the prime international forum for discussion of research, developments and applications in this field. Various key and emerging subjects in the field of hollow structural sections are covered, such as: novel applications and case studies, static and fatigue behaviour of connections/joints, concrete-filled and composite tubular members, earthquake resistance, specification and code developments, material properties and structural reliability, impact resistance and brittle fracture, fire resistance, casting and fabrication innovations. Research and development issues presented in this book are applicable to buildings, bridges, offshore structures, entertainment rides, cranes, towers and various mechanical and agricultural equipment. This book is thus a pertinent reference source for architects, civil and mechanical engineers, designers, steel fabricators and contractors, manufacturers of hollow sections or related construction products, trade associations involved with tubing, owners or developers of tubular structures, steel specification committees, academics and research students. The conference presentations herein include two keynote lectures (the International Institute of Welding Houdremont Lecture and the ISTS Kurobane Lecture), plus finalists in the CIDECT Student Papers Competition. The 11th International Symposium and IIW International Conference on Tubular Structures – ISTS11 – took place in Québec City, Canada from August 31 to September 2, 2006.

This volume is an outcome of the international conference on advances in structures: steel, concrete, composite and aluminium in Sydney in 2003. It focuses on researches in composite design, fire engineering, light gauge construction, advanced structural analysis and concrete filled tubes.

Tubular Structures XIV contains the latest scientific and engineering developments in the field of tubular steel structures, as presented at the 14th International Symposium on Tubular Structures (ISTS14, Imperial College London, UK, 12-14 September 2012). The International Symposium on Tubular Structures (ISTS) has a long-standing reputation for b

Measuring the Performance of the Hollow State is the first in-depth look at the influence of performance measurement on the effectiveness of the federal government. To do this, the authors examine the influence of the Government Performance and Results Act of 1993 (with consideration of the later Program Assessment Rating Tool of 2002) on federal performance measurement, agency performance, and program outcomes. They focus a systematic examination on five agencies in the U.S. Department of Health and Human Services—the Food and Drug Administration, the Centers for Medicare and Medicaid Services, the Health Resources and Services Administration, the National Institutes of Health, and the Indian Health Service. Besides representing a wide range of federal government organizational structures and program formats, these agencies offer a diverse array of third-party arrangements including states, native American tribes, scientists, medical schools, and commercial and nonprofit health care intermediaries and carriers. Exploring the development of performance measures in light of widely varying program mandates, the authors look at issues that affect the quality of this measurement and particularly the influence of program performance by third parties. They consider factors such as goal conflict and ambiguity, politics, and the critical role of intergovernmental relations in federal program performance and performance measurement. Through their findings, they offer illumination to two major questions in public management today—what are the uses and limitations of performance measurement as a policy and management tool and how does performance measurement work when applied to the management of third-party government? While scholars and students in public administration and governmental reform will find this book of particular interest, it will also be of use to anyone working in the public sector who would like to have a better understanding of performance measurement.

This book helps designers and manufacturers to select and develop the most suitable and competitive steel structures, which are safe, fit for production and economic. An optimum design system is used to find the best characteristics of structural models, which guarantee the fulfilment of design and fabrication requirements and minimize the cost function. Realistic numerical models are used as main components of industrial steel structures. Chapter 1 containts some experiences with the optimum design of steel structures Chapter 2 treats some newer mathematical optimization methods. Chapter 3 gives formulae for fabrication times and costs. Chapters 4 deals with beams and columns. Summarizes the Eurocode rules for design. Chapter 5 deals with the design of tubular trusses. Chapter 6 gives the design of frame structures and fire-resistant design rules for a frame. In Chapters 7 some minimum cost design problems of stiffened and cellular plates and shells are worked out for cases of different stiffenings and loads. Chapter 8 gives a cost comparison of cylindrical and conical shells. The book contains a large collection of literatures and a subject list and a name index.