The Biology of Chameleons


Book Description

They change color depending on their mood. They possess uniquely adapted hands and feet distinct from other tetrapods. They feature independently movable eyes. This comprehensive volume delves into these fascinating details and thorough research about one of the most charismatic families of reptilesÑChameleonidae. Written for professional herpetologists, scholars, researchers, and students, this book takes readers on a voyage across time to discover everything that is known about chameleon biology: anatomy, physiology, adaptations, ecology, behavior, biogeography, phylogeny, classification, and conservation. A description of the natural history of chameleons is given, along with the fossil record and typical characteristics of each genus. The state of chameleons in the modern world is also depicted, complete with new information on the most serious threats to these remarkable reptiles.




Stephen J. Field


Book Description




North Carolina and Its Resources


Book Description




The American Republic


Book Description

Many reference works offer compilations of critical documents covering individual liberty, local autonomy, constitutional order, and other issues that helped to shape the American political tradition. Yet few of those works are available in a form suitable for classroom use, and traditional textbooks give short shrift to these important issues. The American Republic overcomes that knowledge gap by providing, in a single volume, critical, original documents revealing the character of American discourse on the nature and importance of local government, the purposes of federal union, and the role of religion and tradition in forming America’s drive for liberty. The American Republic is divided into nine sections, each illustrating major philosophical, cultural, and policy positions at issue during crucial eras of American development. Readers will find documentary evidence of the purposes behind European settlement, American response to English acts, the pervasive role of religion in early American public life, and perspectives in the debate over independence. Subsequent chapters examine the roots of American constitutionalism, Federalist and Anti-Federalist arguments concerning the need to protect common law rights, and the debates over whether the states or the federal government held final authority in determining the course of public policy in America. Also included are the discussions regarding disagreements over internal improvements and other federal measures aimed at binding the nation, particularly in the area of commerce. The final section focuses on the political, cultural, and legal issues leading to the Civil War. Arguments and attempted compromises regarding slavery, along with laws that helped shape slavery, are highlighted. The volume ends with the prelude to the Civil War, a natural stopping-off point for studies of early American history. By bringing together key original documents and other writings that explain cultural, religious, and historical concerns, this volume gives students, teachers, and general readers an effective way to begin examining the diversity of issues and influences that characterize American history. The result unquestionably leads to a deeper and more thorough understanding of America's political, institutional, and cultural continuity and change. Bruce P. Frohnen is Associate Professor of Law at Ohio Northern University College of Law. He holds a J.D. from the Emory University School of Law and a Ph.D. in Government from Cornell University. Click here to print or download The American Republic index.




Robot Reliability and Safety


Book Description

Robots are increasingly being used in industry to perform various types of tasks. Some of the tasks performed by robots in industry are spot welding, materials handling, arc welding, and routing. The population of robots is growing at a significant rate in various parts of the world; for example, in 1984, a report published by the British Robot Association indicated a robot popula tion distribution between Japan (64,600), Western Europe (20,500), and the United States (13,000). This shows a significant number of robots in use. Data available for West Germany and the United Kingdom indicate that in 1977 there were 541 and 80 robots in use, respectively, and in 1984 these numbers went up to 6600 and 2623, respectively. Just as for other engineering products, the reliability and safety of robots are important. A robot has to be safe and reliable. An unreliable robot may become the cause of unsafe conditions, high maintenance costs, inconvenience, etc. Robots make use of electrical, mechanical, pneumatic, electronic, and hydraulic parts. This makes their reliability problem a challenging task because of the many different sources of failures. According to some published literature, the best mean time between failures (MTBF) achieved by robots is only 2500 hours. This means there is definite room for further improvement in robot reliability. With respect to safety, there have been five fatal accidents involving robots since 1978.




Alexander and the Terrible, Horrible, No Good, Very Bad Day


Book Description

Recounts the events of a day when everything goes wrong for Alexander. Suggested level: junior, primary.