Geometric Design of Linkages

Geometric Design of Linkages
Author: J. Michael McCarthy
Publisher: Springer Science & Business Media
Total Pages: 466
Release: 2010-11-11
Genre: Science
ISBN: 1441978925

This book is an introduction to the mathematical theory of design for articulated mechanical systems known as linkages. The focus is on sizing mechanical constraints that guide the movement of a work piece, or end-effector, of the system. The function of the device is prescribed as a set of positions to be reachable by the end-effector; and the mechanical constraints are formed by joints that limit relative movement. The goal is to find all the devices that can achieve a specific task. Formulated in this way the design problem is purely geometric in character. Robot manipulators, walking machines, and mechanical hands are examples of articulated mechanical systems that rely on simple mechanical constraints to provide a complex workspace for the end- effector. The principles presented in this book form the foundation for a design theory for these devices. The emphasis, however, is on articulated systems with fewer degrees of freedom than that of the typical robotic system, and therefore, less complexity. This book will be useful to mathematics, engineering and computer science departments teaching courses on mathematical modeling of robotics and other articulated mechanical systems. This new edition includes research results of the past decade on the synthesis of multi loop planar and spherical linkages, and the use of homotopy methods and Clifford algebras in the synthesis of spatial serial chains. One new chapter on the synthesis of spatial serial chains introduces numerical homotopy and the linear product decomposition of polynomial systems. The second new chapter introduces the Clifford algebra formulation of the kinematics equations of serial chain robots. Examples are use throughout to demonstrate the theory.

The Politics of Linkage

The Politics of Linkage
Author: Brian Bow
Publisher: UBC Press
Total Pages: 235
Release: 2010-07-01
Genre: Political Science
ISBN: 0774859067

Do Canada and the United States share a special relationship, or is this just a face-saving myth, masking dependency and domination? The Politics of Linkage cuts through the rhetoric that clouds this debate by offering detailed accounts of four major bilateral disputes. It shows that the United States has not made coercive linkages between issues. In the early Cold War years, the exercise of American power over Canada was held in check by a genuinely special diplomatic culture but since then has been held back only by interest groups and institutions. This revisionist account of Canada-US relations is essential reading for anyone interested in Canadian politics, American foreign policy, or international diplomacy.

Policy Styles and Policy-Making

Policy Styles and Policy-Making
Author: Michael Howlett
Publisher: Routledge
Total Pages: 333
Release: 2018-10-26
Genre: Political Science
ISBN: 1351618466

Richardson et al.’s respected and seminal Policy Styles in Western Europe (1982) shed valuable light on how countries tend to establish long-term and distinctive ways to make policies that transcend short-term imperatives and issues. This follow-up volume updates those arguments and significantly expands the coverage, consisting of 16 carefully selected country-level case studies from around the world. Furthermore, it includes different types of political regimes and developmental levels to test more widely the robustness of the patterns and variables highlighted in the original book. The case studies – covering countries from the United States, Canada, Germany and the UK to Russia, Togo and Vietnam – follow a uniform structure, combining theoretical considerations and the presentation of empirical material to reveal how the distinct cultural and institutional features of modern states continue to have implications for the making and implementation of public policy decisions within them. The book is essential reading for students and scholars of public policy, public administration, comparative politics and development studies.

War and State Making

War and State Making
Author: Karen A. Rasler
Publisher: Routledge
Total Pages: 277
Release: 2021-03-30
Genre: Business & Economics
ISBN: 1000339262

Originally published in 1989, this is an empirical study of the impact of global war on the expansion and shaping of nation-states. Individual chapters examine the effects of such wars, and the preparation for them, on debt financing, expansion, military spending, welfare spending, GNP and domestic violence. The authors conclude that by virtue of the changes they spurn, global wars are inherently ‘accelerators of social change’.

Book of Making 2025

Book of Making 2025
Author: The Makers of HackSpace magazine
Publisher: Raspberry Pi Press
Total Pages: 182
Release: 2024-10-10
Genre: Technology & Engineering
ISBN: 1916868371

Find inspiration for makers in this collection from a year of HackSpace magazine HackSpace magazine is filled with the best projects, tutorials, and articles for makers and hackers. Each year, that amounts to over 1500 pages! The Book of Making 2025 distills the latest year of HackSpace magazine down to our favourite maker projects. We don't discriminate between different styles of making: HackSpace magazine covers food makers, hobbyists, and even digital fabrication technologies like 3d printing. Step into the wonderful world of making with this book from the Makers of HackSpace magazine. Be inspired by the amazing community projects you'll find in these pages and make your own creations with step-by-step guides. This book is full of the perfect projects for an hour, afternoon, or weekend. Here's a small sampling of what you'll find in this book. You'll learn how to: Work with microcontrollers and electronic circuits. Design for 2d and 3d fabrication methods and make them a reality. Create amazing things with everyday items. Hackspaces and makerspaces have exploded in popularity the world over, as more and more people want to make things and learn. Written by makers for makers, this book features a diverse range of projects to build. Grab some duct tape, fire up a microcontroller, ready a 3D printer, and hack the world around you!

Making Moving Toys and Automata

Making Moving Toys and Automata
Author: Robert Race
Publisher: The Crowood Press
Total Pages: 191
Release: 2018-10-23
Genre: Crafts & Hobbies
ISBN: 1785004921

This beautiful book draws on Robert Race's extensive collection of traditional moving toys, looking at the ways the makers have achieved remarkable and varied results, often with very limited resources. Each chapter begins by looking at the mechanisms and materials used in some of these traditional moving toys, goes on to consider possible variations, and describes how to make a related moving toy. It continues, from this basis, to develop a design for an automaton. The book shows that designing and making these simple but wonderfully satisfying mechanical devices is fun, and that good results can be achieved in many different ways, using a variety of materials, tools and equipment such as wood and wire, card and paper, bamboo, string, tin plate and feathers. It exploits, in a simple way, mechanisms such as levers, linkages, cranks and cams. It explores different ways of moving those mechanisms directly by hand, by springs or falling weights, and by the wind. Beautifully illustrated with 117 colour images.

Strengthening the Linkages Between the Sciences and the Mathematical Sciences

Strengthening the Linkages Between the Sciences and the Mathematical Sciences
Author: National Research Council
Publisher: National Academies Press
Total Pages: 134
Release: 2000-04-05
Genre: Mathematics
ISBN: 0309183626

Over three hundred years ago, Galileo is reported to have said, "The laws of nature are written in the language of mathematics." Often mathematics and science go hand in hand, with one helping develop and improve the other. Discoveries in science, for example, open up new advances in statistics, computer science, operations research, and pure and applied mathematics which in turn enabled new practical technologies and advanced entirely new frontiers of science. Despite the interdependency that exists between these two disciplines, cooperation and collaboration between mathematical scientists and scientists have only occurred by chance. To encourage new collaboration between the mathematical sciences and other fields and to sustain present collaboration, the National Research Council (NRC) formed a committee representing a broad cross-section of scientists from academia, federal government laboratories, and industry. The goal of the committee was to examine the mechanisms for strengthening interdisciplinary research between mathematical sciences and the sciences, with a strong focus on suggesting the most effective mechanisms of collaboration. Strengthening the Linkages Between the Sciences and the Mathematical Sciences provides the findings and recommendations of the committee as well as case studies of cross-discipline collaboration, the workshop agenda, and federal agencies that provide funding for such collaboration.

Linking Trade and Security

Linking Trade and Security
Author: Vinod K. Aggarwal
Publisher: Springer Science & Business Media
Total Pages: 261
Release: 2012-10-11
Genre: Political Science
ISBN: 146144764X

​The connections between trade and security are hardly new. Analysts and practitioners have clearly recognized this interrelationship since the mercantilist arguments of the 16th and 17th centuries. Despite wishful economic liberal thinking that might prefer to separate the political from the economic, it is widely recognized that trade and security are fundamentally interconnected in the foreign policy of states. Over time, as new forms of trade policy have come into being and the international security environment has evolved, the nexus of these two spheres has grown more complex and scholars have struggled to understand their interconnection This edited volume addresses linkages between trade and security by examining the influence of security factors in driving trade policy measures and the corresponding implications of different types of trade arrangements for international security. Ultimately, the project shows that several elements—traditional economic factors, traditional security factors, and human security factors—can affect the development of trade agreements and unilateral policies, and that trade policies may have both a direct and an indirect effect on traditional and human security. The project focuses on Asia, a region where economics is increasingly important but many security issues still linger unresolved, as a primary setting to test trade linkage theories. It also provides a comparative perspective through examination of how the EU and US have used their trade policies to achieve non-economic goals and how these policies have influenced their security environment. Case studies in this project cover key trade institutions and agreements including the World Trade Organization, the Association of Southeast Asian Nations, ASEAN Plus Three, the East Asia Summit, the Asia-Pacific Economic Cooperation forum, the Shanghai Cooperation Organization, and bilateral preferential trade agreements.