Precision Aerial Delivery Systems: Modeling, Dynamics, and Control provides an overview of the recent developments in precision aerial cargo delivery from the standpoint of developing guidance, navigation and control (GNC) algorithms for the self-guided parafoil and parachute-based aerial delivery systems (PADS). Developing a robust GNC system involves aerodynamics modeling, structural and parametric system identification, understanding the environment PADS glides through developing and testing suitable navigation solutions, guidance strategies, and controllers. Introduction of ram-air gliding parachutes in Sportive sky diving in the early 1970s ended the era of round canopies. Availability of GPS in the late 1990s opened an era of autonomous vehicles, which boosted an interest in self-guided PADS. A substantial improvement in achieving a better landing accuracy demonstrated by the different-weight PADS during the last decade expanded the area of their potential usage. Miniaturization and availability of sensors allowed developing micro-light PADS that not only have their own market niche, but make it possible for universities to utilize these systems in their curricula and research along with other unmanned vehicles. Thus the intended audience for this book is not only professionals and researchers, but graduate and postgraduate students working in the areas of aerial systems modeling and GNC algorithms design as well. The book is coauthored by eleven experts and addresses the following topics: PADS and measures of their effectiveness; Basic analysis of the ram-air parachute; Key factors affecting PADS landing accuracy; Aerodynamic characterization of parafoils; Equations of motion; Stability and steady-state performance; Guidance, navigation, and control; Glide-angle control; Control of nonglidlng parachute systems; Flight test instrumentation; Parametrical identification of PADS.
Modern Statistical, Systems, and GPSS Simulation, Second Edition introduces the theory and implementation of discrete-event simulation. This text:
This authored monograph covers a viability to approach to traffic management by advising to vehicles circulated on the network the velocity they should follow for satisfying global traffic conditions;. It presents an investigation of three structural innovations:
Applied GPS for Engineers and Project Managers introduces civil engineersÂ¿especially those who are not already licensed surveyorsÂ¿to the fundamental principles of global positioning technology (GPS). This book covers GPS basics, including positioning and measuring principles, techniques to improve accuracy, and an analysis of low-cost versus high-precision systems. Subsequent chapters explain the considerations for selecting and implementing a GPS system and then demonstrate specific applications of GPS in a variety of engineering situations, including monitoring the health of structures, robotics and machine control, maritime operations, material tracking in large construction sites, site control and design, and monitoring geohazards. This book will be valuable for all civil engineers interested in benefiting from the use of GPS technologies.
Interest in voting systems and voting system reform is growing in the United States. Voting systems--the procedures by which we cast votes and elect our public officials--are a crucial part of the democratic election process. The decision to use one kind of voting system rather than another has far-reaching political consequences. Among other things, voting systems help to determine which officials are elected to run our governments, the variety of parties that voters have to choose from at the polls, whether political minorities can win any representation, and whether the majority will rule. Amy gives readers all the information and analytical tools needed to make intelligent choices among voting systems. He provides a set of political criteria that can be used to judge voting systems and gives detailed descriptions of all the common voting systems used in the United States and other Western democracies, including winner-take-all systems as well as proportional representation systems. He also provides an analysis of the various political advantages and disadvantages associated with each type of system. This is an important guide for citizens, government officials, political activists, students, and anyone who wants to learn more about voting systems and their political implications.
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